drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/idr.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/kthread.h>
  31 #include <linux/pci.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/ctype.h>
  34 #include <linux/aer.h>
  35 #include <linux/slab.h>
  36 #include <linux/firmware.h>
  37 #include <linux/miscdevice.h>
  38 #include <linux/percpu.h>
  39 #include <linux/msi.h>
  40 #include <linux/irq.h>
  41 #include <linux/bitops.h>
  42 #include <linux/crash_dump.h>
  43 #include <linux/cpu.h>
  44 #include <linux/cpuhotplug.h>
  45
  46 #include <scsi/scsi.h>
  47 #include <scsi/scsi_device.h>
  48 #include <scsi/scsi_host.h>
  49 #include <scsi/scsi_transport_fc.h>
  50 #include <scsi/scsi_tcq.h>
  51 #include <scsi/fc/fc_fs.h>
  52
  53 #include "lpfc_hw4.h"
  54 #include "lpfc_hw.h"
  55 #include "lpfc_sli.h"
  56 #include "lpfc_sli4.h"
  57 #include "lpfc_nl.h"
  58 #include "lpfc_disc.h"
  59 #include "lpfc.h"
  60 #include "lpfc_scsi.h"
  61 #include "lpfc_nvme.h"
  62 #include "lpfc_logmsg.h"
  63 #include "lpfc_crtn.h"
  64 #include "lpfc_vport.h"
  65 #include "lpfc_version.h"
  66 #include "lpfc_ids.h"
  67
  68 static enum cpuhp_state lpfc_cpuhp_state;
  69 /* Used when mapping IRQ vectors in a driver centric manner */
  70 static uint32_t lpfc_present_cpu;
  71
  72 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
  73 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
  74 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
  75 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  76 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  77 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
  78 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  79 static int lpfc_setup_endian_order(struct lpfc_hba *);
  80 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  81 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
  82 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
  83 static void lpfc_init_sgl_list(struct lpfc_hba *);
  84 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  85 static void lpfc_free_active_sgl(struct lpfc_hba *);
  86 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  87 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  88 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  89 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  90 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  91 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
  92 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
  93 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
  94 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
  95 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
  96
  97 static struct scsi_transport_template *lpfc_transport_template = NULL;
  98 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  99 static DEFINE_IDR(lpfc_hba_index);
 100 #define LPFC_NVMET_BUF_POST 254
 101
 102 /**
 103  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
 104  * @phba: pointer to lpfc hba data structure.
 105  *
 106  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
 107  * mailbox command. It retrieves the revision information from the HBA and
 108  * collects the Vital Product Data (VPD) about the HBA for preparing the
 109  * configuration of the HBA.
 110  *
 111  * Return codes:
 112  *   0 - success.
 113  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
 114  *   Any other value - indicates an error.
 115  **/
 116 int
 117 lpfc_config_port_prep(struct lpfc_hba *phba)
 118 {
 119         lpfc_vpd_t *vp = &phba->vpd;
 120         int i = 0, rc;
 121         LPFC_MBOXQ_t *pmb;
 122         MAILBOX_t *mb;
 123         char *lpfc_vpd_data = NULL;
 124         uint16_t offset = 0;
 125         static char licensed[56] =
 126                     "key unlock for use with gnu public licensed code only\0";
 127         static int init_key = 1;
 128
 129         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 130         if (!pmb) {
 131                 phba->link_state = LPFC_HBA_ERROR;
 132                 return -ENOMEM;
 133         }
 134
 135         mb = &pmb->u.mb;
 136         phba->link_state = LPFC_INIT_MBX_CMDS;
 137
 138         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 139                 if (init_key) {
 140                         uint32_t *ptext = (uint32_t *) licensed;
 141
 142                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 143                                 *ptext = cpu_to_be32(*ptext);
 144                         init_key = 0;
 145                 }
 146
 147                 lpfc_read_nv(phba, pmb);
 148                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 149                         sizeof (mb->un.varRDnvp.rsvd3));
 150                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 151                          sizeof (licensed));
 152
 153                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 154
 155                 if (rc != MBX_SUCCESS) {
 156                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 157                                         "0324 Config Port initialization "
 158                                         "error, mbxCmd x%x READ_NVPARM, "
 159                                         "mbxStatus x%x\n",
 160                                         mb->mbxCommand, mb->mbxStatus);
 161                         mempool_free(pmb, phba->mbox_mem_pool);
 162                         return -ERESTART;
 163                 }
 164                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 165                        sizeof(phba->wwnn));
 166                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 167                        sizeof(phba->wwpn));
 168         }
 169
 170         /*
 171          * Clear all option bits except LPFC_SLI3_BG_ENABLED,
 172          * which was already set in lpfc_get_cfgparam()
 173          */
 174         phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
 175
 176         /* Setup and issue mailbox READ REV command */
 177         lpfc_read_rev(phba, pmb);
 178         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 179         if (rc != MBX_SUCCESS) {
 180                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 181                                 "0439 Adapter failed to init, mbxCmd x%x "
 182                                 "READ_REV, mbxStatus x%x\n",
 183                                 mb->mbxCommand, mb->mbxStatus);
 184                 mempool_free( pmb, phba->mbox_mem_pool);
 185                 return -ERESTART;
 186         }
 187
 188
 189         /*
 190          * The value of rr must be 1 since the driver set the cv field to 1.
 191          * This setting requires the FW to set all revision fields.
 192          */
 193         if (mb->un.varRdRev.rr == 0) {
 194                 vp->rev.rBit = 0;
 195                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 196                                 "0440 Adapter failed to init, READ_REV has "
 197                                 "missing revision information.\n");
 198                 mempool_free(pmb, phba->mbox_mem_pool);
 199                 return -ERESTART;
 200         }
 201
 202         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 203                 mempool_free(pmb, phba->mbox_mem_pool);
 204                 return -EINVAL;
 205         }
 206
 207         /* Save information as VPD data */
 208         vp->rev.rBit = 1;
 209         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 210         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 211         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 212         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 213         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 214         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 215         vp->rev.smRev = mb->un.varRdRev.smRev;
 216         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 217         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 218         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 219         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 220         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 221         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 222         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 223         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 224
 225         /* If the sli feature level is less then 9, we must
 226          * tear down all RPIs and VPIs on link down if NPIV
 227          * is enabled.
 228          */
 229         if (vp->rev.feaLevelHigh < 9)
 230                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 231
 232         if (lpfc_is_LC_HBA(phba->pcidev->device))
 233                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 234                                                 sizeof (phba->RandomData));
 235
 236         /* Get adapter VPD information */
 237         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 238         if (!lpfc_vpd_data)
 239                 goto out_free_mbox;
 240         do {
 241                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 242                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 243
 244                 if (rc != MBX_SUCCESS) {
 245                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 246                                         "0441 VPD not present on adapter, "
 247                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 248                                         mb->mbxCommand, mb->mbxStatus);
 249                         mb->un.varDmp.word_cnt = 0;
 250                 }
 251                 /* dump mem may return a zero when finished or we got a
 252                  * mailbox error, either way we are done.
 253                  */
 254                 if (mb->un.varDmp.word_cnt == 0)
 255                         break;
 256
 257                 i =  mb->un.varDmp.word_cnt * sizeof(uint32_t);
 258                 if (offset + i >  DMP_VPD_SIZE)
 259                         i =  DMP_VPD_SIZE - offset;
 260                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 261                                       lpfc_vpd_data  + offset, i);
 262                 offset += i;
 263         } while (offset < DMP_VPD_SIZE);
 264
 265         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 266
 267         kfree(lpfc_vpd_data);
 268 out_free_mbox:
 269         mempool_free(pmb, phba->mbox_mem_pool);
 270         return 0;
 271 }
 272
 273 /**
 274  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 275  * @phba: pointer to lpfc hba data structure.
 276  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 277  *
 278  * This is the completion handler for driver's configuring asynchronous event
 279  * mailbox command to the device. If the mailbox command returns successfully,
 280  * it will set internal async event support flag to 1; otherwise, it will
 281  * set internal async event support flag to 0.
 282  **/
 283 static void
 284 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 285 {
 286         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 287                 phba->temp_sensor_support = 1;
 288         else
 289                 phba->temp_sensor_support = 0;
 290         mempool_free(pmboxq, phba->mbox_mem_pool);
 291         return;
 292 }
 293
 294 /**
 295  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 296  * @phba: pointer to lpfc hba data structure.
 297  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 298  *
 299  * This is the completion handler for dump mailbox command for getting
 300  * wake up parameters. When this command complete, the response contain
 301  * Option rom version of the HBA. This function translate the version number
 302  * into a human readable string and store it in OptionROMVersion.
 303  **/
 304 static void
 305 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 306 {
 307         struct prog_id *prg;
 308         uint32_t prog_id_word;
 309         char dist = ' ';
 310         /* character array used for decoding dist type. */
 311         char dist_char[] = "nabx";
 312
 313         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 314                 mempool_free(pmboxq, phba->mbox_mem_pool);
 315                 return;
 316         }
 317
 318         prg = (struct prog_id *) &prog_id_word;
 319
 320         /* word 7 contain option rom version */
 321         prog_id_word = pmboxq->u.mb.un.varWords[7];
 322
 323         /* Decode the Option rom version word to a readable string */
 324         if (prg->dist < 4)
 325                 dist = dist_char[prg->dist];
 326
 327         if ((prg->dist == 3) && (prg->num == 0))
 328                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
 329                         prg->ver, prg->rev, prg->lev);
 330         else
 331                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
 332                         prg->ver, prg->rev, prg->lev,
 333                         dist, prg->num);
 334         mempool_free(pmboxq, phba->mbox_mem_pool);
 335         return;
 336 }
 337
 338 /**
 339  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 340  *      cfg_soft_wwnn, cfg_soft_wwpn
 341  * @vport: pointer to lpfc vport data structure.
 342  *
 343  *
 344  * Return codes
 345  *   None.
 346  **/
 347 void
 348 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 349 {
 350         uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
 351         u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
 352
 353         /* If the soft name exists then update it using the service params */
 354         if (vport->phba->cfg_soft_wwnn)
 355                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 356                            vport->fc_sparam.nodeName.u.wwn);
 357         if (vport->phba->cfg_soft_wwpn)
 358                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 359                            vport->fc_sparam.portName.u.wwn);
 360
 361         /*
 362          * If the name is empty or there exists a soft name
 363          * then copy the service params name, otherwise use the fc name
 364          */
 365         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 366                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 367                         sizeof(struct lpfc_name));
 368         else
 369                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 370                         sizeof(struct lpfc_name));
 371
 372         /*
 373          * If the port name has changed, then set the Param changes flag
 374          * to unreg the login
 375          */
 376         if (vport->fc_portname.u.wwn[0] != 0 &&
 377                 memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
 378                         sizeof(struct lpfc_name)))
 379                 vport->vport_flag |= FAWWPN_PARAM_CHG;
 380
 381         if (vport->fc_portname.u.wwn[0] == 0 ||
 382             vport->phba->cfg_soft_wwpn ||
 383             (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) ||
 384             vport->vport_flag & FAWWPN_SET) {
 385                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 386                         sizeof(struct lpfc_name));
 387                 vport->vport_flag &= ~FAWWPN_SET;
 388                 if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR)
 389                         vport->vport_flag |= FAWWPN_SET;
 390         }
 391         else
 392                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 393                         sizeof(struct lpfc_name));
 394 }
 395
 396 /**
 397  * lpfc_config_port_post - Perform lpfc initialization after config port
 398  * @phba: pointer to lpfc hba data structure.
 399  *
 400  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 401  * command call. It performs all internal resource and state setups on the
 402  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 403  * ELS ring timers, etc.
 404  *
 405  * Return codes
 406  *   0 - success.
 407  *   Any other value - error.
 408  **/
 409 int
 410 lpfc_config_port_post(struct lpfc_hba *phba)
 411 {
 412         struct lpfc_vport *vport = phba->pport;
 413         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 414         LPFC_MBOXQ_t *pmb;
 415         MAILBOX_t *mb;
 416         struct lpfc_dmabuf *mp;
 417         struct lpfc_sli *psli = &phba->sli;
 418         uint32_t status, timeout;
 419         int i, j;
 420         int rc;
 421
 422         spin_lock_irq(&phba->hbalock);
 423         /*
 424          * If the Config port completed correctly the HBA is not
 425          * over heated any more.
 426          */
 427         if (phba->over_temp_state == HBA_OVER_TEMP)
 428                 phba->over_temp_state = HBA_NORMAL_TEMP;
 429         spin_unlock_irq(&phba->hbalock);
 430
 431         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 432         if (!pmb) {
 433                 phba->link_state = LPFC_HBA_ERROR;
 434                 return -ENOMEM;
 435         }
 436         mb = &pmb->u.mb;
 437
 438         /* Get login parameters for NID.  */
 439         rc = lpfc_read_sparam(phba, pmb, 0);
 440         if (rc) {
 441                 mempool_free(pmb, phba->mbox_mem_pool);
 442                 return -ENOMEM;
 443         }
 444
 445         pmb->vport = vport;
 446         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 447                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 448                                 "0448 Adapter failed init, mbxCmd x%x "
 449                                 "READ_SPARM mbxStatus x%x\n",
 450                                 mb->mbxCommand, mb->mbxStatus);
 451                 phba->link_state = LPFC_HBA_ERROR;
 452                 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 453                 mempool_free(pmb, phba->mbox_mem_pool);
 454                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 455                 kfree(mp);
 456                 return -EIO;
 457         }
 458
 459         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 460
 461         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 462         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 463         kfree(mp);
 464         pmb->ctx_buf = NULL;
 465         lpfc_update_vport_wwn(vport);
 466
 467         /* Update the fc_host data structures with new wwn. */
 468         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 469         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 470         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 471
 472         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 473         /* This should be consolidated into parse_vpd ? - mr */
 474         if (phba->SerialNumber[0] == 0) {
 475                 uint8_t *outptr;
 476
 477                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 478                 for (i = 0; i < 12; i++) {
 479                         status = *outptr++;
 480                         j = ((status & 0xf0) >> 4);
 481                         if (j <= 9)
 482                                 phba->SerialNumber[i] =
 483                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 484                         else
 485                                 phba->SerialNumber[i] =
 486                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 487                         i++;
 488                         j = (status & 0xf);
 489                         if (j <= 9)
 490                                 phba->SerialNumber[i] =
 491                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 492                         else
 493                                 phba->SerialNumber[i] =
 494                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 495                 }
 496         }
 497
 498         lpfc_read_config(phba, pmb);
 499         pmb->vport = vport;
 500         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 501                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 502                                 "0453 Adapter failed to init, mbxCmd x%x "
 503                                 "READ_CONFIG, mbxStatus x%x\n",
 504                                 mb->mbxCommand, mb->mbxStatus);
 505                 phba->link_state = LPFC_HBA_ERROR;
 506                 mempool_free( pmb, phba->mbox_mem_pool);
 507                 return -EIO;
 508         }
 509
 510         /* Check if the port is disabled */
 511         lpfc_sli_read_link_ste(phba);
 512
 513         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 514         if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
 515                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
 516                                 "3359 HBA queue depth changed from %d to %d\n",
 517                                 phba->cfg_hba_queue_depth,
 518                                 mb->un.varRdConfig.max_xri);
 519                 phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
 520         }
 521
 522         phba->lmt = mb->un.varRdConfig.lmt;
 523
 524         /* Get the default values for Model Name and Description */
 525         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 526
 527         phba->link_state = LPFC_LINK_DOWN;
 528
 529         /* Only process IOCBs on ELS ring till hba_state is READY */
 530         if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
 531                 psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
 532         if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
 533                 psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
 534
 535         /* Post receive buffers for desired rings */
 536         if (phba->sli_rev != 3)
 537                 lpfc_post_rcv_buf(phba);
 538
 539         /*
 540          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 541          */
 542         if (phba->intr_type == MSIX) {
 543                 rc = lpfc_config_msi(phba, pmb);
 544                 if (rc) {
 545                         mempool_free(pmb, phba->mbox_mem_pool);
 546                         return -EIO;
 547                 }
 548                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 549                 if (rc != MBX_SUCCESS) {
 550                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 551                                         "0352 Config MSI mailbox command "
 552                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 553                                         pmb->u.mb.mbxCommand,
 554                                         pmb->u.mb.mbxStatus);
 555                         mempool_free(pmb, phba->mbox_mem_pool);
 556                         return -EIO;
 557                 }
 558         }
 559
 560         spin_lock_irq(&phba->hbalock);
 561         /* Initialize ERATT handling flag */
 562         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 563
 564         /* Enable appropriate host interrupts */
 565         if (lpfc_readl(phba->HCregaddr, &status)) {
 566                 spin_unlock_irq(&phba->hbalock);
 567                 return -EIO;
 568         }
 569         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 570         if (psli->num_rings > 0)
 571                 status |= HC_R0INT_ENA;
 572         if (psli->num_rings > 1)
 573                 status |= HC_R1INT_ENA;
 574         if (psli->num_rings > 2)
 575                 status |= HC_R2INT_ENA;
 576         if (psli->num_rings > 3)
 577                 status |= HC_R3INT_ENA;
 578
 579         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 580             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 581                 status &= ~(HC_R0INT_ENA);
 582
 583         writel(status, phba->HCregaddr);
 584         readl(phba->HCregaddr); /* flush */
 585         spin_unlock_irq(&phba->hbalock);
 586
 587         /* Set up ring-0 (ELS) timer */
 588         timeout = phba->fc_ratov * 2;
 589         mod_timer(&vport->els_tmofunc,
 590                   jiffies + msecs_to_jiffies(1000 * timeout));
 591         /* Set up heart beat (HB) timer */
 592         mod_timer(&phba->hb_tmofunc,
 593                   jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
 594         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
 595         phba->last_completion_time = jiffies;
 596         /* Set up error attention (ERATT) polling timer */
 597         mod_timer(&phba->eratt_poll,
 598                   jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 599
 600         if (phba->hba_flag & LINK_DISABLED) {
 601                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 602                                 "2598 Adapter Link is disabled.\n");
 603                 lpfc_down_link(phba, pmb);
 604                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 605                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 606                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 607                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 608                                         "2599 Adapter failed to issue DOWN_LINK"
 609                                         " mbox command rc 0x%x\n", rc);
 610
 611                         mempool_free(pmb, phba->mbox_mem_pool);
 612                         return -EIO;
 613                 }
 614         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 615                 mempool_free(pmb, phba->mbox_mem_pool);
 616                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
 617                 if (rc)
 618                         return rc;
 619         }
 620         /* MBOX buffer will be freed in mbox compl */
 621         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 622         if (!pmb) {
 623                 phba->link_state = LPFC_HBA_ERROR;
 624                 return -ENOMEM;
 625         }
 626
 627         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 628         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 629         pmb->vport = phba->pport;
 630         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 631
 632         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 633                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 634                                 "0456 Adapter failed to issue "
 635                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 636                                 rc);
 637                 mempool_free(pmb, phba->mbox_mem_pool);
 638         }
 639
 640         /* Get Option rom version */
 641         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 642         if (!pmb) {
 643                 phba->link_state = LPFC_HBA_ERROR;
 644                 return -ENOMEM;
 645         }
 646
 647         lpfc_dump_wakeup_param(phba, pmb);
 648         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 649         pmb->vport = phba->pport;
 650         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 651
 652         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 653                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 654                                 "0435 Adapter failed "
 655                                 "to get Option ROM version status x%x\n", rc);
 656                 mempool_free(pmb, phba->mbox_mem_pool);
 657         }
 658
 659         return 0;
 660 }
 661
 662 /**
 663  * lpfc_hba_init_link - Initialize the FC link
 664  * @phba: pointer to lpfc hba data structure.
 665  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 666  *
 667  * This routine will issue the INIT_LINK mailbox command call.
 668  * It is available to other drivers through the lpfc_hba data
 669  * structure for use as a delayed link up mechanism with the
 670  * module parameter lpfc_suppress_link_up.
 671  *
 672  * Return code
 673  *              0 - success
 674  *              Any other value - error
 675  **/
 676 static int
 677 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 678 {
 679         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 680 }
 681
 682 /**
 683  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
 684  * @phba: pointer to lpfc hba data structure.
 685  * @fc_topology: desired fc topology.
 686  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 687  *
 688  * This routine will issue the INIT_LINK mailbox command call.
 689  * It is available to other drivers through the lpfc_hba data
 690  * structure for use as a delayed link up mechanism with the
 691  * module parameter lpfc_suppress_link_up.
 692  *
 693  * Return code
 694  *              0 - success
 695  *              Any other value - error
 696  **/
 697 int
 698 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
 699                                uint32_t flag)
 700 {
 701         struct lpfc_vport *vport = phba->pport;
 702         LPFC_MBOXQ_t *pmb;
 703         MAILBOX_t *mb;
 704         int rc;
 705
 706         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 707         if (!pmb) {
 708                 phba->link_state = LPFC_HBA_ERROR;
 709                 return -ENOMEM;
 710         }
 711         mb = &pmb->u.mb;
 712         pmb->vport = vport;
 713
 714         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
 715             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
 716              !(phba->lmt & LMT_1Gb)) ||
 717             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
 718              !(phba->lmt & LMT_2Gb)) ||
 719             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
 720              !(phba->lmt & LMT_4Gb)) ||
 721             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
 722              !(phba->lmt & LMT_8Gb)) ||
 723             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
 724              !(phba->lmt & LMT_10Gb)) ||
 725             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
 726              !(phba->lmt & LMT_16Gb)) ||
 727             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
 728              !(phba->lmt & LMT_32Gb)) ||
 729             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
 730              !(phba->lmt & LMT_64Gb))) {
 731                 /* Reset link speed to auto */
 732                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 733                                 "1302 Invalid speed for this board:%d "
 734                                 "Reset link speed to auto.\n",
 735                                 phba->cfg_link_speed);
 736                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 737         }
 738         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
 739         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 740         if (phba->sli_rev < LPFC_SLI_REV4)
 741                 lpfc_set_loopback_flag(phba);
 742         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 743         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 744                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 745                                 "0498 Adapter failed to init, mbxCmd x%x "
 746                                 "INIT_LINK, mbxStatus x%x\n",
 747                                 mb->mbxCommand, mb->mbxStatus);
 748                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 749                         /* Clear all interrupt enable conditions */
 750                         writel(0, phba->HCregaddr);
 751                         readl(phba->HCregaddr); /* flush */
 752                         /* Clear all pending interrupts */
 753                         writel(0xffffffff, phba->HAregaddr);
 754                         readl(phba->HAregaddr); /* flush */
 755                 }
 756                 phba->link_state = LPFC_HBA_ERROR;
 757                 if (rc != MBX_BUSY || flag == MBX_POLL)
 758                         mempool_free(pmb, phba->mbox_mem_pool);
 759                 return -EIO;
 760         }
 761         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 762         if (flag == MBX_POLL)
 763                 mempool_free(pmb, phba->mbox_mem_pool);
 764
 765         return 0;
 766 }
 767
 768 /**
 769  * lpfc_hba_down_link - this routine downs the FC link
 770  * @phba: pointer to lpfc hba data structure.
 771  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 772  *
 773  * This routine will issue the DOWN_LINK mailbox command call.
 774  * It is available to other drivers through the lpfc_hba data
 775  * structure for use to stop the link.
 776  *
 777  * Return code
 778  *              0 - success
 779  *              Any other value - error
 780  **/
 781 static int
 782 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 783 {
 784         LPFC_MBOXQ_t *pmb;
 785         int rc;
 786
 787         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 788         if (!pmb) {
 789                 phba->link_state = LPFC_HBA_ERROR;
 790                 return -ENOMEM;
 791         }
 792
 793         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 794                         "0491 Adapter Link is disabled.\n");
 795         lpfc_down_link(phba, pmb);
 796         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 797         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 798         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 799                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 800                                 "2522 Adapter failed to issue DOWN_LINK"
 801                                 " mbox command rc 0x%x\n", rc);
 802
 803                 mempool_free(pmb, phba->mbox_mem_pool);
 804                 return -EIO;
 805         }
 806         if (flag == MBX_POLL)
 807                 mempool_free(pmb, phba->mbox_mem_pool);
 808
 809         return 0;
 810 }
 811
 812 /**
 813  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 814  * @phba: pointer to lpfc HBA data structure.
 815  *
 816  * This routine will do LPFC uninitialization before the HBA is reset when
 817  * bringing down the SLI Layer.
 818  *
 819  * Return codes
 820  *   0 - success.
 821  *   Any other value - error.
 822  **/
 823 int
 824 lpfc_hba_down_prep(struct lpfc_hba *phba)
 825 {
 826         struct lpfc_vport **vports;
 827         int i;
 828
 829         if (phba->sli_rev <= LPFC_SLI_REV3) {
 830                 /* Disable interrupts */
 831                 writel(0, phba->HCregaddr);
 832                 readl(phba->HCregaddr); /* flush */
 833         }
 834
 835         if (phba->pport->load_flag & FC_UNLOADING)
 836                 lpfc_cleanup_discovery_resources(phba->pport);
 837         else {
 838                 vports = lpfc_create_vport_work_array(phba);
 839                 if (vports != NULL)
 840                         for (i = 0; i <= phba->max_vports &&
 841                                 vports[i] != NULL; i++)
 842                                 lpfc_cleanup_discovery_resources(vports[i]);
 843                 lpfc_destroy_vport_work_array(phba, vports);
 844         }
 845         return 0;
 846 }
 847
 848 /**
 849  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
 850  * rspiocb which got deferred
 851  *
 852  * @phba: pointer to lpfc HBA data structure.
 853  *
 854  * This routine will cleanup completed slow path events after HBA is reset
 855  * when bringing down the SLI Layer.
 856  *
 857  *
 858  * Return codes
 859  *   void.
 860  **/
 861 static void
 862 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
 863 {
 864         struct lpfc_iocbq *rspiocbq;
 865         struct hbq_dmabuf *dmabuf;
 866         struct lpfc_cq_event *cq_event;
 867
 868         spin_lock_irq(&phba->hbalock);
 869         phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
 870         spin_unlock_irq(&phba->hbalock);
 871
 872         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
 873                 /* Get the response iocb from the head of work queue */
 874                 spin_lock_irq(&phba->hbalock);
 875                 list_remove_head(&phba->sli4_hba.sp_queue_event,
 876                                  cq_event, struct lpfc_cq_event, list);
 877                 spin_unlock_irq(&phba->hbalock);
 878
 879                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
 880                 case CQE_CODE_COMPL_WQE:
 881                         rspiocbq = container_of(cq_event, struct lpfc_iocbq,
 882                                                  cq_event);
 883                         lpfc_sli_release_iocbq(phba, rspiocbq);
 884                         break;
 885                 case CQE_CODE_RECEIVE:
 886                 case CQE_CODE_RECEIVE_V1:
 887                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
 888                                               cq_event);
 889                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
 890                 }
 891         }
 892 }
 893
 894 /**
 895  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
 896  * @phba: pointer to lpfc HBA data structure.
 897  *
 898  * This routine will cleanup posted ELS buffers after the HBA is reset
 899  * when bringing down the SLI Layer.
 900  *
 901  *
 902  * Return codes
 903  *   void.
 904  **/
 905 static void
 906 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
 907 {
 908         struct lpfc_sli *psli = &phba->sli;
 909         struct lpfc_sli_ring *pring;
 910         struct lpfc_dmabuf *mp, *next_mp;
 911         LIST_HEAD(buflist);
 912         int count;
 913
 914         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 915                 lpfc_sli_hbqbuf_free_all(phba);
 916         else {
 917                 /* Cleanup preposted buffers on the ELS ring */
 918                 pring = &psli->sli3_ring[LPFC_ELS_RING];
 919                 spin_lock_irq(&phba->hbalock);
 920                 list_splice_init(&pring->postbufq, &buflist);
 921                 spin_unlock_irq(&phba->hbalock);
 922
 923                 count = 0;
 924                 list_for_each_entry_safe(mp, next_mp, &buflist, list) {
 925                         list_del(&mp->list);
 926                         count++;
 927                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 928                         kfree(mp);
 929                 }
 930
 931                 spin_lock_irq(&phba->hbalock);
 932                 pring->postbufq_cnt -= count;
 933                 spin_unlock_irq(&phba->hbalock);
 934         }
 935 }
 936
 937 /**
 938  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
 939  * @phba: pointer to lpfc HBA data structure.
 940  *
 941  * This routine will cleanup the txcmplq after the HBA is reset when bringing
 942  * down the SLI Layer.
 943  *
 944  * Return codes
 945  *   void
 946  **/
 947 static void
 948 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
 949 {
 950         struct lpfc_sli *psli = &phba->sli;
 951         struct lpfc_queue *qp = NULL;
 952         struct lpfc_sli_ring *pring;
 953         LIST_HEAD(completions);
 954         int i;
 955         struct lpfc_iocbq *piocb, *next_iocb;
 956
 957         if (phba->sli_rev != LPFC_SLI_REV4) {
 958                 for (i = 0; i < psli->num_rings; i++) {
 959                         pring = &psli->sli3_ring[i];
 960                         spin_lock_irq(&phba->hbalock);
 961                         /* At this point in time the HBA is either reset or DOA
 962                          * Nothing should be on txcmplq as it will
 963                          * NEVER complete.
 964                          */
 965                         list_splice_init(&pring->txcmplq, &completions);
 966                         pring->txcmplq_cnt = 0;
 967                         spin_unlock_irq(&phba->hbalock);
 968
 969                         lpfc_sli_abort_iocb_ring(phba, pring);
 970                 }
 971                 /* Cancel all the IOCBs from the completions list */
 972                 lpfc_sli_cancel_iocbs(phba, &completions,
 973                                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 974                 return;
 975         }
 976         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
 977                 pring = qp->pring;
 978                 if (!pring)
 979                         continue;
 980                 spin_lock_irq(&pring->ring_lock);
 981                 list_for_each_entry_safe(piocb, next_iocb,
 982                                          &pring->txcmplq, list)
 983                         piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
 984                 list_splice_init(&pring->txcmplq, &completions);
 985                 pring->txcmplq_cnt = 0;
 986                 spin_unlock_irq(&pring->ring_lock);
 987                 lpfc_sli_abort_iocb_ring(phba, pring);
 988         }
 989         /* Cancel all the IOCBs from the completions list */
 990         lpfc_sli_cancel_iocbs(phba, &completions,
 991                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 992 }
 993
 994 /**
 995  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 996  * @phba: pointer to lpfc HBA data structure.
 997  *
 998  * This routine will do uninitialization after the HBA is reset when bring
 999  * down the SLI Layer.
1000  *
1001  * Return codes
1002  *   0 - success.
1003  *   Any other value - error.
1004  **/
1005 static int
1006 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1007 {
1008         lpfc_hba_free_post_buf(phba);
1009         lpfc_hba_clean_txcmplq(phba);
1010         return 0;
1011 }
1012
1013 /**
1014  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1015  * @phba: pointer to lpfc HBA data structure.
1016  *
1017  * This routine will do uninitialization after the HBA is reset when bring
1018  * down the SLI Layer.
1019  *
1020  * Return codes
1021  *   0 - success.
1022  *   Any other value - error.
1023  **/
1024 static int
1025 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1026 {
1027         struct lpfc_io_buf *psb, *psb_next;
1028         struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
1029         struct lpfc_sli4_hdw_queue *qp;
1030         LIST_HEAD(aborts);
1031         LIST_HEAD(nvme_aborts);
1032         LIST_HEAD(nvmet_aborts);
1033         struct lpfc_sglq *sglq_entry = NULL;
1034         int cnt, idx;
1035
1036
1037         lpfc_sli_hbqbuf_free_all(phba);
1038         lpfc_hba_clean_txcmplq(phba);
1039
1040         /* At this point in time the HBA is either reset or DOA. Either
1041          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1042          * on the lpfc_els_sgl_list so that it can either be freed if the
1043          * driver is unloading or reposted if the driver is restarting
1044          * the port.
1045          */
1046         spin_lock_irq(&phba->hbalock);  /* required for lpfc_els_sgl_list and */
1047                                         /* scsl_buf_list */
1048         /* sgl_list_lock required because worker thread uses this
1049          * list.
1050          */
1051         spin_lock(&phba->sli4_hba.sgl_list_lock);
1052         list_for_each_entry(sglq_entry,
1053                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1054                 sglq_entry->state = SGL_FREED;
1055
1056         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1057                         &phba->sli4_hba.lpfc_els_sgl_list);
1058
1059
1060         spin_unlock(&phba->sli4_hba.sgl_list_lock);
1061
1062         /* abts_xxxx_buf_list_lock required because worker thread uses this
1063          * list.
1064          */
1065         cnt = 0;
1066         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1067                 qp = &phba->sli4_hba.hdwq[idx];
1068
1069                 spin_lock(&qp->abts_io_buf_list_lock);
1070                 list_splice_init(&qp->lpfc_abts_io_buf_list,
1071                                  &aborts);
1072
1073                 list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1074                         psb->pCmd = NULL;
1075                         psb->status = IOSTAT_SUCCESS;
1076                         cnt++;
1077                 }
1078                 spin_lock(&qp->io_buf_list_put_lock);
1079                 list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1080                 qp->put_io_bufs += qp->abts_scsi_io_bufs;
1081                 qp->put_io_bufs += qp->abts_nvme_io_bufs;
1082                 qp->abts_scsi_io_bufs = 0;
1083                 qp->abts_nvme_io_bufs = 0;
1084                 spin_unlock(&qp->io_buf_list_put_lock);
1085                 spin_unlock(&qp->abts_io_buf_list_lock);
1086         }
1087         spin_unlock_irq(&phba->hbalock);
1088
1089         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1090                 spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1091                 list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1092                                  &nvmet_aborts);
1093                 spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1094                 list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1095                         ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
1096                         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1097                 }
1098         }
1099
1100         lpfc_sli4_free_sp_events(phba);
1101         return cnt;
1102 }
1103
1104 /**
1105  * lpfc_hba_down_post - Wrapper func for hba down post routine
1106  * @phba: pointer to lpfc HBA data structure.
1107  *
1108  * This routine wraps the actual SLI3 or SLI4 routine for performing
1109  * uninitialization after the HBA is reset when bring down the SLI Layer.
1110  *
1111  * Return codes
1112  *   0 - success.
1113  *   Any other value - error.
1114  **/
1115 int
1116 lpfc_hba_down_post(struct lpfc_hba *phba)
1117 {
1118         return (*phba->lpfc_hba_down_post)(phba);
1119 }
1120
1121 /**
1122  * lpfc_hb_timeout - The HBA-timer timeout handler
1123  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1124  *
1125  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1126  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1127  * work-port-events bitmap and the worker thread is notified. This timeout
1128  * event will be used by the worker thread to invoke the actual timeout
1129  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1130  * be performed in the timeout handler and the HBA timeout event bit shall
1131  * be cleared by the worker thread after it has taken the event bitmap out.
1132  **/
1133 static void
1134 lpfc_hb_timeout(struct timer_list *t)
1135 {
1136         struct lpfc_hba *phba;
1137         uint32_t tmo_posted;
1138         unsigned long iflag;
1139
1140         phba = from_timer(phba, t, hb_tmofunc);
1141
1142         /* Check for heart beat timeout conditions */
1143         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1144         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1145         if (!tmo_posted)
1146                 phba->pport->work_port_events |= WORKER_HB_TMO;
1147         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1148
1149         /* Tell the worker thread there is work to do */
1150         if (!tmo_posted)
1151                 lpfc_worker_wake_up(phba);
1152         return;
1153 }
1154
1155 /**
1156  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1157  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1158  *
1159  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1160  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1161  * work-port-events bitmap and the worker thread is notified. This timeout
1162  * event will be used by the worker thread to invoke the actual timeout
1163  * handler routine, lpfc_rrq_handler. Any periodical operations will
1164  * be performed in the timeout handler and the RRQ timeout event bit shall
1165  * be cleared by the worker thread after it has taken the event bitmap out.
1166  **/
1167 static void
1168 lpfc_rrq_timeout(struct timer_list *t)
1169 {
1170         struct lpfc_hba *phba;
1171         unsigned long iflag;
1172
1173         phba = from_timer(phba, t, rrq_tmr);
1174         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1175         if (!(phba->pport->load_flag & FC_UNLOADING))
1176                 phba->hba_flag |= HBA_RRQ_ACTIVE;
1177         else
1178                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1179         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1180
1181         if (!(phba->pport->load_flag & FC_UNLOADING))
1182                 lpfc_worker_wake_up(phba);
1183 }
1184
1185 /**
1186  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1187  * @phba: pointer to lpfc hba data structure.
1188  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1189  *
1190  * This is the callback function to the lpfc heart-beat mailbox command.
1191  * If configured, the lpfc driver issues the heart-beat mailbox command to
1192  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1193  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1194  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1195  * heart-beat outstanding state. Once the mailbox command comes back and
1196  * no error conditions detected, the heart-beat mailbox command timer is
1197  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1198  * state is cleared for the next heart-beat. If the timer expired with the
1199  * heart-beat outstanding state set, the driver will put the HBA offline.
1200  **/
1201 static void
1202 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1203 {
1204         unsigned long drvr_flag;
1205
1206         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1207         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
1208         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1209
1210         /* Check and reset heart-beat timer if necessary */
1211         mempool_free(pmboxq, phba->mbox_mem_pool);
1212         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1213                 !(phba->link_state == LPFC_HBA_ERROR) &&
1214                 !(phba->pport->load_flag & FC_UNLOADING))
1215                 mod_timer(&phba->hb_tmofunc,
1216                           jiffies +
1217                           msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1218         return;
1219 }
1220
1221 /*
1222  * lpfc_idle_stat_delay_work - idle_stat tracking
1223  *
1224  * This routine tracks per-cq idle_stat and determines polling decisions.
1225  *
1226  * Return codes:
1227  *   None
1228  **/
1229 static void
1230 lpfc_idle_stat_delay_work(struct work_struct *work)
1231 {
1232         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1233                                              struct lpfc_hba,
1234                                              idle_stat_delay_work);
1235         struct lpfc_queue *cq;
1236         struct lpfc_sli4_hdw_queue *hdwq;
1237         struct lpfc_idle_stat *idle_stat;
1238         u32 i, idle_percent;
1239         u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
1240
1241         if (phba->pport->load_flag & FC_UNLOADING)
1242                 return;
1243
1244         if (phba->link_state == LPFC_HBA_ERROR ||
1245             phba->pport->fc_flag & FC_OFFLINE_MODE)
1246                 goto requeue;
1247
1248         for_each_present_cpu(i) {
1249                 hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
1250                 cq = hdwq->io_cq;
1251
1252                 /* Skip if we've already handled this cq's primary CPU */
1253                 if (cq->chann != i)
1254                         continue;
1255
1256                 idle_stat = &phba->sli4_hba.idle_stat[i];
1257
1258                 /* get_cpu_idle_time returns values as running counters. Thus,
1259                  * to know the amount for this period, the prior counter values
1260                  * need to be subtracted from the current counter values.
1261                  * From there, the idle time stat can be calculated as a
1262                  * percentage of 100 - the sum of the other consumption times.
1263                  */
1264                 wall_idle = get_cpu_idle_time(i, &wall, 1);
1265                 diff_idle = wall_idle - idle_stat->prev_idle;
1266                 diff_wall = wall - idle_stat->prev_wall;
1267
1268                 if (diff_wall <= diff_idle)
1269                         busy_time = 0;
1270                 else
1271                         busy_time = diff_wall - diff_idle;
1272
1273                 idle_percent = div64_u64(100 * busy_time, diff_wall);
1274                 idle_percent = 100 - idle_percent;
1275
1276                 if (idle_percent < 15)
1277                         cq->poll_mode = LPFC_QUEUE_WORK;
1278                 else
1279                         cq->poll_mode = LPFC_IRQ_POLL;
1280
1281                 idle_stat->prev_idle = wall_idle;
1282                 idle_stat->prev_wall = wall;
1283         }
1284
1285 requeue:
1286         schedule_delayed_work(&phba->idle_stat_delay_work,
1287                               msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
1288 }
1289
1290 static void
1291 lpfc_hb_eq_delay_work(struct work_struct *work)
1292 {
1293         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1294                                              struct lpfc_hba, eq_delay_work);
1295         struct lpfc_eq_intr_info *eqi, *eqi_new;
1296         struct lpfc_queue *eq, *eq_next;
1297         unsigned char *ena_delay = NULL;
1298         uint32_t usdelay;
1299         int i;
1300
1301         if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
1302                 return;
1303
1304         if (phba->link_state == LPFC_HBA_ERROR ||
1305             phba->pport->fc_flag & FC_OFFLINE_MODE)
1306                 goto requeue;
1307
1308         ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
1309                             GFP_KERNEL);
1310         if (!ena_delay)
1311                 goto requeue;
1312
1313         for (i = 0; i < phba->cfg_irq_chann; i++) {
1314                 /* Get the EQ corresponding to the IRQ vector */
1315                 eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1316                 if (!eq)
1317                         continue;
1318                 if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
1319                         eq->q_flag &= ~HBA_EQ_DELAY_CHK;
1320                         ena_delay[eq->last_cpu] = 1;
1321                 }
1322         }
1323
1324         for_each_present_cpu(i) {
1325                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1326                 if (ena_delay[i]) {
1327                         usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
1328                         if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1329                                 usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1330                 } else {
1331                         usdelay = 0;
1332                 }
1333
1334                 eqi->icnt = 0;
1335
1336                 list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1337                         if (unlikely(eq->last_cpu != i)) {
1338                                 eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1339                                                       eq->last_cpu);
1340                                 list_move_tail(&eq->cpu_list, &eqi_new->list);
1341                                 continue;
1342                         }
1343                         if (usdelay != eq->q_mode)
1344                                 lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1345                                                          usdelay);
1346                 }
1347         }
1348
1349         kfree(ena_delay);
1350
1351 requeue:
1352         queue_delayed_work(phba->wq, &phba->eq_delay_work,
1353                            msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1354 }
1355
1356 /**
1357  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1358  * @phba: pointer to lpfc hba data structure.
1359  *
1360  * For each heartbeat, this routine does some heuristic methods to adjust
1361  * XRI distribution. The goal is to fully utilize free XRIs.
1362  **/
1363 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1364 {
1365         u32 i;
1366         u32 hwq_count;
1367
1368         hwq_count = phba->cfg_hdw_queue;
1369         for (i = 0; i < hwq_count; i++) {
1370                 /* Adjust XRIs in private pool */
1371                 lpfc_adjust_pvt_pool_count(phba, i);
1372
1373                 /* Adjust high watermark */
1374                 lpfc_adjust_high_watermark(phba, i);
1375
1376 #ifdef LPFC_MXP_STAT
1377                 /* Snapshot pbl, pvt and busy count */
1378                 lpfc_snapshot_mxp(phba, i);
1379 #endif
1380         }
1381 }
1382
1383 /**
1384  * lpfc_issue_hb_mbox - Issues heart-beat mailbox command
1385  * @phba: pointer to lpfc hba data structure.
1386  *
1387  * If a HB mbox is not already in progrees, this routine will allocate
1388  * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command,
1389  * and issue it. The HBA_HBEAT_INP flag means the command is in progress.
1390  **/
1391 int
1392 lpfc_issue_hb_mbox(struct lpfc_hba *phba)
1393 {
1394         LPFC_MBOXQ_t *pmboxq;
1395         int retval;
1396
1397         /* Is a Heartbeat mbox already in progress */
1398         if (phba->hba_flag & HBA_HBEAT_INP)
1399                 return 0;
1400
1401         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1402         if (!pmboxq)
1403                 return -ENOMEM;
1404
1405         lpfc_heart_beat(phba, pmboxq);
1406         pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1407         pmboxq->vport = phba->pport;
1408         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
1409
1410         if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
1411                 mempool_free(pmboxq, phba->mbox_mem_pool);
1412                 return -ENXIO;
1413         }
1414         phba->hba_flag |= HBA_HBEAT_INP;
1415
1416         return 0;
1417 }
1418
1419 /**
1420  * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command
1421  * @phba: pointer to lpfc hba data structure.
1422  *
1423  * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO
1424  * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless
1425  * of the value of lpfc_enable_hba_heartbeat.
1426  * If lpfc_enable_hba_heartbeat is set, the timeout routine will always
1427  * try to issue a MBX_HEARTBEAT mbox command.
1428  **/
1429 void
1430 lpfc_issue_hb_tmo(struct lpfc_hba *phba)
1431 {
1432         if (phba->cfg_enable_hba_heartbeat)
1433                 return;
1434         phba->hba_flag |= HBA_HBEAT_TMO;
1435 }
1436
1437 /**
1438  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1439  * @phba: pointer to lpfc hba data structure.
1440  *
1441  * This is the actual HBA-timer timeout handler to be invoked by the worker
1442  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1443  * handler performs any periodic operations needed for the device. If such
1444  * periodic event has already been attended to either in the interrupt handler
1445  * or by processing slow-ring or fast-ring events within the HBA-timer
1446  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1447  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1448  * is configured and there is no heart-beat mailbox command outstanding, a
1449  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1450  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1451  * to offline.
1452  **/
1453 void
1454 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1455 {
1456         struct lpfc_vport **vports;
1457         struct lpfc_dmabuf *buf_ptr;
1458         int retval = 0;
1459         int i, tmo;
1460         struct lpfc_sli *psli = &phba->sli;
1461         LIST_HEAD(completions);
1462
1463         if (phba->cfg_xri_rebalancing) {
1464                 /* Multi-XRI pools handler */
1465                 lpfc_hb_mxp_handler(phba);
1466         }
1467
1468         vports = lpfc_create_vport_work_array(phba);
1469         if (vports != NULL)
1470                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1471                         lpfc_rcv_seq_check_edtov(vports[i]);
1472                         lpfc_fdmi_change_check(vports[i]);
1473                 }
1474         lpfc_destroy_vport_work_array(phba, vports);
1475
1476         if ((phba->link_state == LPFC_HBA_ERROR) ||
1477                 (phba->pport->load_flag & FC_UNLOADING) ||
1478                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1479                 return;
1480
1481         if (phba->elsbuf_cnt &&
1482                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1483                 spin_lock_irq(&phba->hbalock);
1484                 list_splice_init(&phba->elsbuf, &completions);
1485                 phba->elsbuf_cnt = 0;
1486                 phba->elsbuf_prev_cnt = 0;
1487                 spin_unlock_irq(&phba->hbalock);
1488
1489                 while (!list_empty(&completions)) {
1490                         list_remove_head(&completions, buf_ptr,
1491                                 struct lpfc_dmabuf, list);
1492                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1493                         kfree(buf_ptr);
1494                 }
1495         }
1496         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1497
1498         /* If there is no heart beat outstanding, issue a heartbeat command */
1499         if (phba->cfg_enable_hba_heartbeat) {
1500                 /* If IOs are completing, no need to issue a MBX_HEARTBEAT */
1501                 spin_lock_irq(&phba->pport->work_port_lock);
1502                 if (time_after(phba->last_completion_time +
1503                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1504                                 jiffies)) {
1505                         spin_unlock_irq(&phba->pport->work_port_lock);
1506                         if (phba->hba_flag & HBA_HBEAT_INP)
1507                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1508                         else
1509                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1510                         goto out;
1511                 }
1512                 spin_unlock_irq(&phba->pport->work_port_lock);
1513
1514                 /* Check if a MBX_HEARTBEAT is already in progress */
1515                 if (phba->hba_flag & HBA_HBEAT_INP) {
1516                         /*
1517                          * If heart beat timeout called with HBA_HBEAT_INP set
1518                          * we need to give the hb mailbox cmd a chance to
1519                          * complete or TMO.
1520                          */
1521                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1522                                 "0459 Adapter heartbeat still outstanding: "
1523                                 "last compl time was %d ms.\n",
1524                                 jiffies_to_msecs(jiffies
1525                                          - phba->last_completion_time));
1526                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1527                 } else {
1528                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1529                                 (list_empty(&psli->mboxq))) {
1530
1531                                 retval = lpfc_issue_hb_mbox(phba);
1532                                 if (retval) {
1533                                         tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1534                                         goto out;
1535                                 }
1536                                 phba->skipped_hb = 0;
1537                         } else if (time_before_eq(phba->last_completion_time,
1538                                         phba->skipped_hb)) {
1539                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1540                                         "2857 Last completion time not "
1541                                         " updated in %d ms\n",
1542                                         jiffies_to_msecs(jiffies
1543                                                  - phba->last_completion_time));
1544                         } else
1545                                 phba->skipped_hb = jiffies;
1546
1547                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1548                         goto out;
1549                 }
1550         } else {
1551                 /* Check to see if we want to force a MBX_HEARTBEAT */
1552                 if (phba->hba_flag & HBA_HBEAT_TMO) {
1553                         retval = lpfc_issue_hb_mbox(phba);
1554                         if (retval)
1555                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1556                         else
1557                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1558                         goto out;
1559                 }
1560                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1561         }
1562 out:
1563         mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));
1564 }
1565
1566 /**
1567  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1568  * @phba: pointer to lpfc hba data structure.
1569  *
1570  * This routine is called to bring the HBA offline when HBA hardware error
1571  * other than Port Error 6 has been detected.
1572  **/
1573 static void
1574 lpfc_offline_eratt(struct lpfc_hba *phba)
1575 {
1576         struct lpfc_sli   *psli = &phba->sli;
1577
1578         spin_lock_irq(&phba->hbalock);
1579         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1580         spin_unlock_irq(&phba->hbalock);
1581         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1582
1583         lpfc_offline(phba);
1584         lpfc_reset_barrier(phba);
1585         spin_lock_irq(&phba->hbalock);
1586         lpfc_sli_brdreset(phba);
1587         spin_unlock_irq(&phba->hbalock);
1588         lpfc_hba_down_post(phba);
1589         lpfc_sli_brdready(phba, HS_MBRDY);
1590         lpfc_unblock_mgmt_io(phba);
1591         phba->link_state = LPFC_HBA_ERROR;
1592         return;
1593 }
1594
1595 /**
1596  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1597  * @phba: pointer to lpfc hba data structure.
1598  *
1599  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1600  * other than Port Error 6 has been detected.
1601  **/
1602 void
1603 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1604 {
1605         spin_lock_irq(&phba->hbalock);
1606         phba->link_state = LPFC_HBA_ERROR;
1607         spin_unlock_irq(&phba->hbalock);
1608
1609         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1610         lpfc_sli_flush_io_rings(phba);
1611         lpfc_offline(phba);
1612         lpfc_hba_down_post(phba);
1613         lpfc_unblock_mgmt_io(phba);
1614 }
1615
1616 /**
1617  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1618  * @phba: pointer to lpfc hba data structure.
1619  *
1620  * This routine is invoked to handle the deferred HBA hardware error
1621  * conditions. This type of error is indicated by HBA by setting ER1
1622  * and another ER bit in the host status register. The driver will
1623  * wait until the ER1 bit clears before handling the error condition.
1624  **/
1625 static void
1626 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1627 {
1628         uint32_t old_host_status = phba->work_hs;
1629         struct lpfc_sli *psli = &phba->sli;
1630
1631         /* If the pci channel is offline, ignore possible errors,
1632          * since we cannot communicate with the pci card anyway.
1633          */
1634         if (pci_channel_offline(phba->pcidev)) {
1635                 spin_lock_irq(&phba->hbalock);
1636                 phba->hba_flag &= ~DEFER_ERATT;
1637                 spin_unlock_irq(&phba->hbalock);
1638                 return;
1639         }
1640
1641         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1642                         "0479 Deferred Adapter Hardware Error "
1643                         "Data: x%x x%x x%x\n",
1644                         phba->work_hs, phba->work_status[0],
1645                         phba->work_status[1]);
1646
1647         spin_lock_irq(&phba->hbalock);
1648         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1649         spin_unlock_irq(&phba->hbalock);
1650
1651
1652         /*
1653          * Firmware stops when it triggred erratt. That could cause the I/Os
1654          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1655          * SCSI layer retry it after re-establishing link.
1656          */
1657         lpfc_sli_abort_fcp_rings(phba);
1658
1659         /*
1660          * There was a firmware error. Take the hba offline and then
1661          * attempt to restart it.
1662          */
1663         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1664         lpfc_offline(phba);
1665
1666         /* Wait for the ER1 bit to clear.*/
1667         while (phba->work_hs & HS_FFER1) {
1668                 msleep(100);
1669                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1670                         phba->work_hs = UNPLUG_ERR ;
1671                         break;
1672                 }
1673                 /* If driver is unloading let the worker thread continue */
1674                 if (phba->pport->load_flag & FC_UNLOADING) {
1675                         phba->work_hs = 0;
1676                         break;
1677                 }
1678         }
1679
1680         /*
1681          * This is to ptrotect against a race condition in which
1682          * first write to the host attention register clear the
1683          * host status register.
1684          */
1685         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1686                 phba->work_hs = old_host_status & ~HS_FFER1;
1687
1688         spin_lock_irq(&phba->hbalock);
1689         phba->hba_flag &= ~DEFER_ERATT;
1690         spin_unlock_irq(&phba->hbalock);
1691         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1692         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1693 }
1694
1695 static void
1696 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1697 {
1698         struct lpfc_board_event_header board_event;
1699         struct Scsi_Host *shost;
1700
1701         board_event.event_type = FC_REG_BOARD_EVENT;
1702         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1703         shost = lpfc_shost_from_vport(phba->pport);
1704         fc_host_post_vendor_event(shost, fc_get_event_number(),
1705                                   sizeof(board_event),
1706                                   (char *) &board_event,
1707                                   LPFC_NL_VENDOR_ID);
1708 }
1709
1710 /**
1711  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1712  * @phba: pointer to lpfc hba data structure.
1713  *
1714  * This routine is invoked to handle the following HBA hardware error
1715  * conditions:
1716  * 1 - HBA error attention interrupt
1717  * 2 - DMA ring index out of range
1718  * 3 - Mailbox command came back as unknown
1719  **/
1720 static void
1721 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1722 {
1723         struct lpfc_vport *vport = phba->pport;
1724         struct lpfc_sli   *psli = &phba->sli;
1725         uint32_t event_data;
1726         unsigned long temperature;
1727         struct temp_event temp_event_data;
1728         struct Scsi_Host  *shost;
1729
1730         /* If the pci channel is offline, ignore possible errors,
1731          * since we cannot communicate with the pci card anyway.
1732          */
1733         if (pci_channel_offline(phba->pcidev)) {
1734                 spin_lock_irq(&phba->hbalock);
1735                 phba->hba_flag &= ~DEFER_ERATT;
1736                 spin_unlock_irq(&phba->hbalock);
1737                 return;
1738         }
1739
1740         /* If resets are disabled then leave the HBA alone and return */
1741         if (!phba->cfg_enable_hba_reset)
1742                 return;
1743
1744         /* Send an internal error event to mgmt application */
1745         lpfc_board_errevt_to_mgmt(phba);
1746
1747         if (phba->hba_flag & DEFER_ERATT)
1748                 lpfc_handle_deferred_eratt(phba);
1749
1750         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1751                 if (phba->work_hs & HS_FFER6)
1752                         /* Re-establishing Link */
1753                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1754                                         "1301 Re-establishing Link "
1755                                         "Data: x%x x%x x%x\n",
1756                                         phba->work_hs, phba->work_status[0],
1757                                         phba->work_status[1]);
1758                 if (phba->work_hs & HS_FFER8)
1759                         /* Device Zeroization */
1760                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1761                                         "2861 Host Authentication device "
1762                                         "zeroization Data:x%x x%x x%x\n",
1763                                         phba->work_hs, phba->work_status[0],
1764                                         phba->work_status[1]);
1765
1766                 spin_lock_irq(&phba->hbalock);
1767                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1768                 spin_unlock_irq(&phba->hbalock);
1769
1770                 /*
1771                 * Firmware stops when it triggled erratt with HS_FFER6.
1772                 * That could cause the I/Os dropped by the firmware.
1773                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1774                 * retry it after re-establishing link.
1775                 */
1776                 lpfc_sli_abort_fcp_rings(phba);
1777
1778                 /*
1779                  * There was a firmware error.  Take the hba offline and then
1780                  * attempt to restart it.
1781                  */
1782                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1783                 lpfc_offline(phba);
1784                 lpfc_sli_brdrestart(phba);
1785                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1786                         lpfc_unblock_mgmt_io(phba);
1787                         return;
1788                 }
1789                 lpfc_unblock_mgmt_io(phba);
1790         } else if (phba->work_hs & HS_CRIT_TEMP) {
1791                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1792                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1793                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1794                 temp_event_data.data = (uint32_t)temperature;
1795
1796                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1797                                 "0406 Adapter maximum temperature exceeded "
1798                                 "(%ld), taking this port offline "
1799                                 "Data: x%x x%x x%x\n",
1800                                 temperature, phba->work_hs,
1801                                 phba->work_status[0], phba->work_status[1]);
1802
1803                 shost = lpfc_shost_from_vport(phba->pport);
1804                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1805                                           sizeof(temp_event_data),
1806                                           (char *) &temp_event_data,
1807                                           SCSI_NL_VID_TYPE_PCI
1808                                           | PCI_VENDOR_ID_EMULEX);
1809
1810                 spin_lock_irq(&phba->hbalock);
1811                 phba->over_temp_state = HBA_OVER_TEMP;
1812                 spin_unlock_irq(&phba->hbalock);
1813                 lpfc_offline_eratt(phba);
1814
1815         } else {
1816                 /* The if clause above forces this code path when the status
1817                  * failure is a value other than FFER6. Do not call the offline
1818                  * twice. This is the adapter hardware error path.
1819                  */
1820                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1821                                 "0457 Adapter Hardware Error "
1822                                 "Data: x%x x%x x%x\n",
1823                                 phba->work_hs,
1824                                 phba->work_status[0], phba->work_status[1]);
1825
1826                 event_data = FC_REG_DUMP_EVENT;
1827                 shost = lpfc_shost_from_vport(vport);
1828                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1829                                 sizeof(event_data), (char *) &event_data,
1830                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1831
1832                 lpfc_offline_eratt(phba);
1833         }
1834         return;
1835 }
1836
1837 /**
1838  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1839  * @phba: pointer to lpfc hba data structure.
1840  * @mbx_action: flag for mailbox shutdown action.
1841  * @en_rn_msg: send reset/port recovery message.
1842  * This routine is invoked to perform an SLI4 port PCI function reset in
1843  * response to port status register polling attention. It waits for port
1844  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1845  * During this process, interrupt vectors are freed and later requested
1846  * for handling possible port resource change.
1847  **/
1848 static int
1849 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1850                             bool en_rn_msg)
1851 {
1852         int rc;
1853         uint32_t intr_mode;
1854
1855         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1856             LPFC_SLI_INTF_IF_TYPE_2) {
1857                 /*
1858                  * On error status condition, driver need to wait for port
1859                  * ready before performing reset.
1860                  */
1861                 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1862                 if (rc)
1863                         return rc;
1864         }
1865
1866         /* need reset: attempt for port recovery */
1867         if (en_rn_msg)
1868                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1869                                 "2887 Reset Needed: Attempting Port "
1870                                 "Recovery...\n");
1871
1872         /* If we are no wait, the HBA has been reset and is not
1873          * functional, thus we should clear LPFC_SLI_ACTIVE flag.
1874          */
1875         if (mbx_action == LPFC_MBX_NO_WAIT) {
1876                 spin_lock_irq(&phba->hbalock);
1877                 phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
1878                 spin_unlock_irq(&phba->hbalock);
1879         }
1880
1881         lpfc_offline_prep(phba, mbx_action);
1882         lpfc_sli_flush_io_rings(phba);
1883         lpfc_offline(phba);
1884         /* release interrupt for possible resource change */
1885         lpfc_sli4_disable_intr(phba);
1886         rc = lpfc_sli_brdrestart(phba);
1887         if (rc) {
1888                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1889                                 "6309 Failed to restart board\n");
1890                 return rc;
1891         }
1892         /* request and enable interrupt */
1893         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1894         if (intr_mode == LPFC_INTR_ERROR) {
1895                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1896                                 "3175 Failed to enable interrupt\n");
1897                 return -EIO;
1898         }
1899         phba->intr_mode = intr_mode;
1900         rc = lpfc_online(phba);
1901         if (rc == 0)
1902                 lpfc_unblock_mgmt_io(phba);
1903
1904         return rc;
1905 }
1906
1907 /**
1908  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1909  * @phba: pointer to lpfc hba data structure.
1910  *
1911  * This routine is invoked to handle the SLI4 HBA hardware error attention
1912  * conditions.
1913  **/
1914 static void
1915 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1916 {
1917         struct lpfc_vport *vport = phba->pport;
1918         uint32_t event_data;
1919         struct Scsi_Host *shost;
1920         uint32_t if_type;
1921         struct lpfc_register portstat_reg = {0};
1922         uint32_t reg_err1, reg_err2;
1923         uint32_t uerrlo_reg, uemasklo_reg;
1924         uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1925         bool en_rn_msg = true;
1926         struct temp_event temp_event_data;
1927         struct lpfc_register portsmphr_reg;
1928         int rc, i;
1929
1930         /* If the pci channel is offline, ignore possible errors, since
1931          * we cannot communicate with the pci card anyway.
1932          */
1933         if (pci_channel_offline(phba->pcidev)) {
1934                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1935                                 "3166 pci channel is offline\n");
1936                 lpfc_sli4_offline_eratt(phba);
1937                 return;
1938         }
1939
1940         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1941         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1942         switch (if_type) {
1943         case LPFC_SLI_INTF_IF_TYPE_0:
1944                 pci_rd_rc1 = lpfc_readl(
1945                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
1946                                 &uerrlo_reg);
1947                 pci_rd_rc2 = lpfc_readl(
1948                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1949                                 &uemasklo_reg);
1950                 /* consider PCI bus read error as pci_channel_offline */
1951                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1952                         return;
1953                 if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1954                         lpfc_sli4_offline_eratt(phba);
1955                         return;
1956                 }
1957                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1958                                 "7623 Checking UE recoverable");
1959
1960                 for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1961                         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1962                                        &portsmphr_reg.word0))
1963                                 continue;
1964
1965                         smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1966                                                    &portsmphr_reg);
1967                         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1968                             LPFC_PORT_SEM_UE_RECOVERABLE)
1969                                 break;
1970                         /*Sleep for 1Sec, before checking SEMAPHORE */
1971                         msleep(1000);
1972                 }
1973
1974                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1975                                 "4827 smphr_port_status x%x : Waited %dSec",
1976                                 smphr_port_status, i);
1977
1978                 /* Recoverable UE, reset the HBA device */
1979                 if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1980                     LPFC_PORT_SEM_UE_RECOVERABLE) {
1981                         for (i = 0; i < 20; i++) {
1982                                 msleep(1000);
1983                                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1984                                     &portsmphr_reg.word0) &&
1985                                     (LPFC_POST_STAGE_PORT_READY ==
1986                                      bf_get(lpfc_port_smphr_port_status,
1987                                      &portsmphr_reg))) {
1988                                         rc = lpfc_sli4_port_sta_fn_reset(phba,
1989                                                 LPFC_MBX_NO_WAIT, en_rn_msg);
1990                                         if (rc == 0)
1991                                                 return;
1992                                         lpfc_printf_log(phba, KERN_ERR,
1993                                                 LOG_TRACE_EVENT,
1994                                                 "4215 Failed to recover UE");
1995                                         break;
1996                                 }
1997                         }
1998                 }
1999                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2000                                 "7624 Firmware not ready: Failing UE recovery,"
2001                                 " waited %dSec", i);
2002                 phba->link_state = LPFC_HBA_ERROR;
2003                 break;
2004
2005         case LPFC_SLI_INTF_IF_TYPE_2:
2006         case LPFC_SLI_INTF_IF_TYPE_6:
2007                 pci_rd_rc1 = lpfc_readl(
2008                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
2009                                 &portstat_reg.word0);
2010                 /* consider PCI bus read error as pci_channel_offline */
2011                 if (pci_rd_rc1 == -EIO) {
2012                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2013                                 "3151 PCI bus read access failure: x%x\n",
2014                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
2015                         lpfc_sli4_offline_eratt(phba);
2016                         return;
2017                 }
2018                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
2019                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
2020                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
2021                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2022                                         "2889 Port Overtemperature event, "
2023                                         "taking port offline Data: x%x x%x\n",
2024                                         reg_err1, reg_err2);
2025
2026                         phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
2027                         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
2028                         temp_event_data.event_code = LPFC_CRIT_TEMP;
2029                         temp_event_data.data = 0xFFFFFFFF;
2030
2031                         shost = lpfc_shost_from_vport(phba->pport);
2032                         fc_host_post_vendor_event(shost, fc_get_event_number(),
2033                                                   sizeof(temp_event_data),
2034                                                   (char *)&temp_event_data,
2035                                                   SCSI_NL_VID_TYPE_PCI
2036                                                   | PCI_VENDOR_ID_EMULEX);
2037
2038                         spin_lock_irq(&phba->hbalock);
2039                         phba->over_temp_state = HBA_OVER_TEMP;
2040                         spin_unlock_irq(&phba->hbalock);
2041                         lpfc_sli4_offline_eratt(phba);
2042                         return;
2043                 }
2044                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2045                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
2046                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2047                                         "3143 Port Down: Firmware Update "
2048                                         "Detected\n");
2049                         en_rn_msg = false;
2050                 } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2051                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2052                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2053                                         "3144 Port Down: Debug Dump\n");
2054                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2055                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
2056                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2057                                         "3145 Port Down: Provisioning\n");
2058
2059                 /* If resets are disabled then leave the HBA alone and return */
2060                 if (!phba->cfg_enable_hba_reset)
2061                         return;
2062
2063                 /* Check port status register for function reset */
2064                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
2065                                 en_rn_msg);
2066                 if (rc == 0) {
2067                         /* don't report event on forced debug dump */
2068                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2069                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2070                                 return;
2071                         else
2072                                 break;
2073                 }
2074                 /* fall through for not able to recover */
2075                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2076                                 "3152 Unrecoverable error\n");
2077                 phba->link_state = LPFC_HBA_ERROR;
2078                 break;
2079         case LPFC_SLI_INTF_IF_TYPE_1:
2080         default:
2081                 break;
2082         }
2083         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2084                         "3123 Report dump event to upper layer\n");
2085         /* Send an internal error event to mgmt application */
2086         lpfc_board_errevt_to_mgmt(phba);
2087
2088         event_data = FC_REG_DUMP_EVENT;
2089         shost = lpfc_shost_from_vport(vport);
2090         fc_host_post_vendor_event(shost, fc_get_event_number(),
2091                                   sizeof(event_data), (char *) &event_data,
2092                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2093 }
2094
2095 /**
2096  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2097  * @phba: pointer to lpfc HBA data structure.
2098  *
2099  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2100  * routine from the API jump table function pointer from the lpfc_hba struct.
2101  *
2102  * Return codes
2103  *   0 - success.
2104  *   Any other value - error.
2105  **/
2106 void
2107 lpfc_handle_eratt(struct lpfc_hba *phba)
2108 {
2109         (*phba->lpfc_handle_eratt)(phba);
2110 }
2111
2112 /**
2113  * lpfc_handle_latt - The HBA link event handler
2114  * @phba: pointer to lpfc hba data structure.
2115  *
2116  * This routine is invoked from the worker thread to handle a HBA host
2117  * attention link event. SLI3 only.
2118  **/
2119 void
2120 lpfc_handle_latt(struct lpfc_hba *phba)
2121 {
2122         struct lpfc_vport *vport = phba->pport;
2123         struct lpfc_sli   *psli = &phba->sli;
2124         LPFC_MBOXQ_t *pmb;
2125         volatile uint32_t control;
2126         struct lpfc_dmabuf *mp;
2127         int rc = 0;
2128
2129         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2130         if (!pmb) {
2131                 rc = 1;
2132                 goto lpfc_handle_latt_err_exit;
2133         }
2134
2135         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2136         if (!mp) {
2137                 rc = 2;
2138                 goto lpfc_handle_latt_free_pmb;
2139         }
2140
2141         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
2142         if (!mp->virt) {
2143                 rc = 3;
2144                 goto lpfc_handle_latt_free_mp;
2145         }
2146
2147         /* Cleanup any outstanding ELS commands */
2148         lpfc_els_flush_all_cmd(phba);
2149
2150         psli->slistat.link_event++;
2151         lpfc_read_topology(phba, pmb, mp);
2152         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2153         pmb->vport = vport;
2154         /* Block ELS IOCBs until we have processed this mbox command */
2155         phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2156         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2157         if (rc == MBX_NOT_FINISHED) {
2158                 rc = 4;
2159                 goto lpfc_handle_latt_free_mbuf;
2160         }
2161
2162         /* Clear Link Attention in HA REG */
2163         spin_lock_irq(&phba->hbalock);
2164         writel(HA_LATT, phba->HAregaddr);
2165         readl(phba->HAregaddr); /* flush */
2166         spin_unlock_irq(&phba->hbalock);
2167
2168         return;
2169
2170 lpfc_handle_latt_free_mbuf:
2171         phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2172         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2173 lpfc_handle_latt_free_mp:
2174         kfree(mp);
2175 lpfc_handle_latt_free_pmb:
2176         mempool_free(pmb, phba->mbox_mem_pool);
2177 lpfc_handle_latt_err_exit:
2178         /* Enable Link attention interrupts */
2179         spin_lock_irq(&phba->hbalock);
2180         psli->sli_flag |= LPFC_PROCESS_LA;
2181         control = readl(phba->HCregaddr);
2182         control |= HC_LAINT_ENA;
2183         writel(control, phba->HCregaddr);
2184         readl(phba->HCregaddr); /* flush */
2185
2186         /* Clear Link Attention in HA REG */
2187         writel(HA_LATT, phba->HAregaddr);
2188         readl(phba->HAregaddr); /* flush */
2189         spin_unlock_irq(&phba->hbalock);
2190         lpfc_linkdown(phba);
2191         phba->link_state = LPFC_HBA_ERROR;
2192
2193         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2194                         "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2195
2196         return;
2197 }
2198
2199 /**
2200  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2201  * @phba: pointer to lpfc hba data structure.
2202  * @vpd: pointer to the vital product data.
2203  * @len: length of the vital product data in bytes.
2204  *
2205  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2206  * an array of characters. In this routine, the ModelName, ProgramType, and
2207  * ModelDesc, etc. fields of the phba data structure will be populated.
2208  *
2209  * Return codes
2210  *   0 - pointer to the VPD passed in is NULL
2211  *   1 - success
2212  **/
2213 int
2214 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2215 {
2216         uint8_t lenlo, lenhi;
2217         int Length;
2218         int i, j;
2219         int finished = 0;
2220         int index = 0;
2221
2222         if (!vpd)
2223                 return 0;
2224
2225         /* Vital Product */
2226         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2227                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
2228                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2229                         (uint32_t) vpd[3]);
2230         while (!finished && (index < (len - 4))) {
2231                 switch (vpd[index]) {
2232                 case 0x82:
2233                 case 0x91:
2234                         index += 1;
2235                         lenlo = vpd[index];
2236                         index += 1;
2237                         lenhi = vpd[index];
2238                         index += 1;
2239                         i = ((((unsigned short)lenhi) << 8) + lenlo);
2240                         index += i;
2241                         break;
2242                 case 0x90:
2243                         index += 1;
2244                         lenlo = vpd[index];
2245                         index += 1;
2246                         lenhi = vpd[index];
2247                         index += 1;
2248                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
2249                         if (Length > len - index)
2250                                 Length = len - index;
2251                         while (Length > 0) {
2252                         /* Look for Serial Number */
2253                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
2254                                 index += 2;
2255                                 i = vpd[index];
2256                                 index += 1;
2257                                 j = 0;
2258                                 Length -= (3+i);
2259                                 while(i--) {
2260                                         phba->SerialNumber[j++] = vpd[index++];
2261                                         if (j == 31)
2262                                                 break;
2263                                 }
2264                                 phba->SerialNumber[j] = 0;
2265                                 continue;
2266                         }
2267                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
2268                                 phba->vpd_flag |= VPD_MODEL_DESC;
2269                                 index += 2;
2270                                 i = vpd[index];
2271                                 index += 1;
2272                                 j = 0;
2273                                 Length -= (3+i);
2274                                 while(i--) {
2275                                         phba->ModelDesc[j++] = vpd[index++];
2276                                         if (j == 255)
2277                                                 break;
2278                                 }
2279                                 phba->ModelDesc[j] = 0;
2280                                 continue;
2281                         }
2282                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
2283                                 phba->vpd_flag |= VPD_MODEL_NAME;
2284                                 index += 2;
2285                                 i = vpd[index];
2286                                 index += 1;
2287                                 j = 0;
2288                                 Length -= (3+i);
2289                                 while(i--) {
2290                                         phba->ModelName[j++] = vpd[index++];
2291                                         if (j == 79)
2292                                                 break;
2293                                 }
2294                                 phba->ModelName[j] = 0;
2295                                 continue;
2296                         }
2297                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2298                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
2299                                 index += 2;
2300                                 i = vpd[index];
2301                                 index += 1;
2302                                 j = 0;
2303                                 Length -= (3+i);
2304                                 while(i--) {
2305                                         phba->ProgramType[j++] = vpd[index++];
2306                                         if (j == 255)
2307                                                 break;
2308                                 }
2309                                 phba->ProgramType[j] = 0;
2310                                 continue;
2311                         }
2312                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2313                                 phba->vpd_flag |= VPD_PORT;
2314                                 index += 2;
2315                                 i = vpd[index];
2316                                 index += 1;
2317                                 j = 0;
2318                                 Length -= (3+i);
2319                                 while(i--) {
2320                                         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2321                                             (phba->sli4_hba.pport_name_sta ==
2322                                              LPFC_SLI4_PPNAME_GET)) {
2323                                                 j++;
2324                                                 index++;
2325                                         } else
2326                                                 phba->Port[j++] = vpd[index++];
2327                                         if (j == 19)
2328                                                 break;
2329                                 }
2330                                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
2331                                     (phba->sli4_hba.pport_name_sta ==
2332                                      LPFC_SLI4_PPNAME_NON))
2333                                         phba->Port[j] = 0;
2334                                 continue;
2335                         }
2336                         else {
2337                                 index += 2;
2338                                 i = vpd[index];
2339                                 index += 1;
2340                                 index += i;
2341                                 Length -= (3 + i);
2342                         }
2343                 }
2344                 finished = 0;
2345                 break;
2346                 case 0x78:
2347                         finished = 1;
2348                         break;
2349                 default:
2350                         index ++;
2351                         break;
2352                 }
2353         }
2354
2355         return(1);
2356 }
2357
2358 /**
2359  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2360  * @phba: pointer to lpfc hba data structure.
2361  * @mdp: pointer to the data structure to hold the derived model name.
2362  * @descp: pointer to the data structure to hold the derived description.
2363  *
2364  * This routine retrieves HBA's description based on its registered PCI device
2365  * ID. The @descp passed into this function points to an array of 256 chars. It
2366  * shall be returned with the model name, maximum speed, and the host bus type.
2367  * The @mdp passed into this function points to an array of 80 chars. When the
2368  * function returns, the @mdp will be filled with the model name.
2369  **/
2370 static void
2371 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2372 {
2373         lpfc_vpd_t *vp;
2374         uint16_t dev_id = phba->pcidev->device;
2375         int max_speed;
2376         int GE = 0;
2377         int oneConnect = 0; /* default is not a oneConnect */
2378         struct {
2379                 char *name;
2380                 char *bus;
2381                 char *function;
2382         } m = {"<Unknown>", "", ""};
2383
2384         if (mdp && mdp[0] != '\0'
2385                 && descp && descp[0] != '\0')
2386                 return;
2387
2388         if (phba->lmt & LMT_64Gb)
2389                 max_speed = 64;
2390         else if (phba->lmt & LMT_32Gb)
2391                 max_speed = 32;
2392         else if (phba->lmt & LMT_16Gb)
2393                 max_speed = 16;
2394         else if (phba->lmt & LMT_10Gb)
2395                 max_speed = 10;
2396         else if (phba->lmt & LMT_8Gb)
2397                 max_speed = 8;
2398         else if (phba->lmt & LMT_4Gb)
2399                 max_speed = 4;
2400         else if (phba->lmt & LMT_2Gb)
2401                 max_speed = 2;
2402         else if (phba->lmt & LMT_1Gb)
2403                 max_speed = 1;
2404         else
2405                 max_speed = 0;
2406
2407         vp = &phba->vpd;
2408
2409         switch (dev_id) {
2410         case PCI_DEVICE_ID_FIREFLY:
2411                 m = (typeof(m)){"LP6000", "PCI",
2412                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2413                 break;
2414         case PCI_DEVICE_ID_SUPERFLY:
2415                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2416                         m = (typeof(m)){"LP7000", "PCI", ""};
2417                 else
2418                         m = (typeof(m)){"LP7000E", "PCI", ""};
2419                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2420                 break;
2421         case PCI_DEVICE_ID_DRAGONFLY:
2422                 m = (typeof(m)){"LP8000", "PCI",
2423                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2424                 break;
2425         case PCI_DEVICE_ID_CENTAUR:
2426                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2427                         m = (typeof(m)){"LP9002", "PCI", ""};
2428                 else
2429                         m = (typeof(m)){"LP9000", "PCI", ""};
2430                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2431                 break;
2432         case PCI_DEVICE_ID_RFLY:
2433                 m = (typeof(m)){"LP952", "PCI",
2434                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2435                 break;
2436         case PCI_DEVICE_ID_PEGASUS:
2437                 m = (typeof(m)){"LP9802", "PCI-X",
2438                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2439                 break;
2440         case PCI_DEVICE_ID_THOR:
2441                 m = (typeof(m)){"LP10000", "PCI-X",
2442                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2443                 break;
2444         case PCI_DEVICE_ID_VIPER:
2445                 m = (typeof(m)){"LPX1000",  "PCI-X",
2446                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2447                 break;
2448         case PCI_DEVICE_ID_PFLY:
2449                 m = (typeof(m)){"LP982", "PCI-X",
2450                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2451                 break;
2452         case PCI_DEVICE_ID_TFLY:
2453                 m = (typeof(m)){"LP1050", "PCI-X",
2454                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2455                 break;
2456         case PCI_DEVICE_ID_HELIOS:
2457                 m = (typeof(m)){"LP11000", "PCI-X2",
2458                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2459                 break;
2460         case PCI_DEVICE_ID_HELIOS_SCSP:
2461                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
2462                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2463                 break;
2464         case PCI_DEVICE_ID_HELIOS_DCSP:
2465                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2466                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2467                 break;
2468         case PCI_DEVICE_ID_NEPTUNE:
2469                 m = (typeof(m)){"LPe1000", "PCIe",
2470                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2471                 break;
2472         case PCI_DEVICE_ID_NEPTUNE_SCSP:
2473                 m = (typeof(m)){"LPe1000-SP", "PCIe",
2474                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2475                 break;
2476         case PCI_DEVICE_ID_NEPTUNE_DCSP:
2477                 m = (typeof(m)){"LPe1002-SP", "PCIe",
2478                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2479                 break;
2480         case PCI_DEVICE_ID_BMID:
2481                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2482                 break;
2483         case PCI_DEVICE_ID_BSMB:
2484                 m = (typeof(m)){"LP111", "PCI-X2",
2485                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2486                 break;
2487         case PCI_DEVICE_ID_ZEPHYR:
2488                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2489                 break;
2490         case PCI_DEVICE_ID_ZEPHYR_SCSP:
2491                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2492                 break;
2493         case PCI_DEVICE_ID_ZEPHYR_DCSP:
2494                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2495                 GE = 1;
2496                 break;
2497         case PCI_DEVICE_ID_ZMID:
2498                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2499                 break;
2500         case PCI_DEVICE_ID_ZSMB:
2501                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2502                 break;
2503         case PCI_DEVICE_ID_LP101:
2504                 m = (typeof(m)){"LP101", "PCI-X",
2505                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2506                 break;
2507         case PCI_DEVICE_ID_LP10000S:
2508                 m = (typeof(m)){"LP10000-S", "PCI",
2509                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2510                 break;
2511         case PCI_DEVICE_ID_LP11000S:
2512                 m = (typeof(m)){"LP11000-S", "PCI-X2",
2513                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2514                 break;
2515         case PCI_DEVICE_ID_LPE11000S:
2516                 m = (typeof(m)){"LPe11000-S", "PCIe",
2517                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2518                 break;
2519         case PCI_DEVICE_ID_SAT:
2520                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2521                 break;
2522         case PCI_DEVICE_ID_SAT_MID:
2523                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2524                 break;
2525         case PCI_DEVICE_ID_SAT_SMB:
2526                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2527                 break;
2528         case PCI_DEVICE_ID_SAT_DCSP:
2529                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2530                 break;
2531         case PCI_DEVICE_ID_SAT_SCSP:
2532                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2533                 break;
2534         case PCI_DEVICE_ID_SAT_S:
2535                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2536                 break;
2537         case PCI_DEVICE_ID_HORNET:
2538                 m = (typeof(m)){"LP21000", "PCIe",
2539                                 "Obsolete, Unsupported FCoE Adapter"};
2540                 GE = 1;
2541                 break;
2542         case PCI_DEVICE_ID_PROTEUS_VF:
2543                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2544                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2545                 break;
2546         case PCI_DEVICE_ID_PROTEUS_PF:
2547                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2548                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2549                 break;
2550         case PCI_DEVICE_ID_PROTEUS_S:
2551                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2552                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2553                 break;
2554         case PCI_DEVICE_ID_TIGERSHARK:
2555                 oneConnect = 1;
2556                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2557                 break;
2558         case PCI_DEVICE_ID_TOMCAT:
2559                 oneConnect = 1;
2560                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2561                 break;
2562         case PCI_DEVICE_ID_FALCON:
2563                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2564                                 "EmulexSecure Fibre"};
2565                 break;
2566         case PCI_DEVICE_ID_BALIUS:
2567                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2568                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2569                 break;
2570         case PCI_DEVICE_ID_LANCER_FC:
2571                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2572                 break;
2573         case PCI_DEVICE_ID_LANCER_FC_VF:
2574                 m = (typeof(m)){"LPe16000", "PCIe",
2575                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2576                 break;
2577         case PCI_DEVICE_ID_LANCER_FCOE:
2578                 oneConnect = 1;
2579                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2580                 break;
2581         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2582                 oneConnect = 1;
2583                 m = (typeof(m)){"OCe15100", "PCIe",
2584                                 "Obsolete, Unsupported FCoE"};
2585                 break;
2586         case PCI_DEVICE_ID_LANCER_G6_FC:
2587                 m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2588                 break;
2589         case PCI_DEVICE_ID_LANCER_G7_FC:
2590                 m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2591                 break;
2592         case PCI_DEVICE_ID_SKYHAWK:
2593         case PCI_DEVICE_ID_SKYHAWK_VF:
2594                 oneConnect = 1;
2595                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2596                 break;
2597         default:
2598                 m = (typeof(m)){"Unknown", "", ""};
2599                 break;
2600         }
2601
2602         if (mdp && mdp[0] == '\0')
2603                 snprintf(mdp, 79,"%s", m.name);
2604         /*
2605          * oneConnect hba requires special processing, they are all initiators
2606          * and we put the port number on the end
2607          */
2608         if (descp && descp[0] == '\0') {
2609                 if (oneConnect)
2610                         snprintf(descp, 255,
2611                                 "Emulex OneConnect %s, %s Initiator %s",
2612                                 m.name, m.function,
2613                                 phba->Port);
2614                 else if (max_speed == 0)
2615                         snprintf(descp, 255,
2616                                 "Emulex %s %s %s",
2617                                 m.name, m.bus, m.function);
2618                 else
2619                         snprintf(descp, 255,
2620                                 "Emulex %s %d%s %s %s",
2621                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2622                                 m.bus, m.function);
2623         }
2624 }
2625
2626 /**
2627  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2628  * @phba: pointer to lpfc hba data structure.
2629  * @pring: pointer to a IOCB ring.
2630  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2631  *
2632  * This routine posts a given number of IOCBs with the associated DMA buffer
2633  * descriptors specified by the cnt argument to the given IOCB ring.
2634  *
2635  * Return codes
2636  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2637  **/
2638 int
2639 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2640 {
2641         IOCB_t *icmd;
2642         struct lpfc_iocbq *iocb;
2643         struct lpfc_dmabuf *mp1, *mp2;
2644
2645         cnt += pring->missbufcnt;
2646
2647         /* While there are buffers to post */
2648         while (cnt > 0) {
2649                 /* Allocate buffer for  command iocb */
2650                 iocb = lpfc_sli_get_iocbq(phba);
2651                 if (iocb == NULL) {
2652                         pring->missbufcnt = cnt;
2653                         return cnt;
2654                 }
2655                 icmd = &iocb->iocb;
2656
2657                 /* 2 buffers can be posted per command */
2658                 /* Allocate buffer to post */
2659                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2660                 if (mp1)
2661                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2662                 if (!mp1 || !mp1->virt) {
2663                         kfree(mp1);
2664                         lpfc_sli_release_iocbq(phba, iocb);
2665                         pring->missbufcnt = cnt;
2666                         return cnt;
2667                 }
2668
2669                 INIT_LIST_HEAD(&mp1->list);
2670                 /* Allocate buffer to post */
2671                 if (cnt > 1) {
2672                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2673                         if (mp2)
2674                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2675                                                             &mp2->phys);
2676                         if (!mp2 || !mp2->virt) {
2677                                 kfree(mp2);
2678                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2679                                 kfree(mp1);
2680                                 lpfc_sli_release_iocbq(phba, iocb);
2681                                 pring->missbufcnt = cnt;
2682                                 return cnt;
2683                         }
2684
2685                         INIT_LIST_HEAD(&mp2->list);
2686                 } else {
2687                         mp2 = NULL;
2688                 }
2689
2690                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2691                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2692                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2693                 icmd->ulpBdeCount = 1;
2694                 cnt--;
2695                 if (mp2) {
2696                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2697                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2698                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2699                         cnt--;
2700                         icmd->ulpBdeCount = 2;
2701                 }
2702
2703                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2704                 icmd->ulpLe = 1;
2705
2706                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2707                     IOCB_ERROR) {
2708                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2709                         kfree(mp1);
2710                         cnt++;
2711                         if (mp2) {
2712                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2713                                 kfree(mp2);
2714                                 cnt++;
2715                         }
2716                         lpfc_sli_release_iocbq(phba, iocb);
2717                         pring->missbufcnt = cnt;
2718                         return cnt;
2719                 }
2720                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2721                 if (mp2)
2722                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2723         }
2724         pring->missbufcnt = 0;
2725         return 0;
2726 }
2727
2728 /**
2729  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2730  * @phba: pointer to lpfc hba data structure.
2731  *
2732  * This routine posts initial receive IOCB buffers to the ELS ring. The
2733  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2734  * set to 64 IOCBs. SLI3 only.
2735  *
2736  * Return codes
2737  *   0 - success (currently always success)
2738  **/
2739 static int
2740 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2741 {
2742         struct lpfc_sli *psli = &phba->sli;
2743
2744         /* Ring 0, ELS / CT buffers */
2745         lpfc_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2746         /* Ring 2 - FCP no buffers needed */
2747
2748         return 0;
2749 }
2750
2751 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2752
2753 /**
2754  * lpfc_sha_init - Set up initial array of hash table entries
2755  * @HashResultPointer: pointer to an array as hash table.
2756  *
2757  * This routine sets up the initial values to the array of hash table entries
2758  * for the LC HBAs.
2759  **/
2760 static void
2761 lpfc_sha_init(uint32_t * HashResultPointer)
2762 {
2763         HashResultPointer[0] = 0x67452301;
2764         HashResultPointer[1] = 0xEFCDAB89;
2765         HashResultPointer[2] = 0x98BADCFE;
2766         HashResultPointer[3] = 0x10325476;
2767         HashResultPointer[4] = 0xC3D2E1F0;
2768 }
2769
2770 /**
2771  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2772  * @HashResultPointer: pointer to an initial/result hash table.
2773  * @HashWorkingPointer: pointer to an working hash table.
2774  *
2775  * This routine iterates an initial hash table pointed by @HashResultPointer
2776  * with the values from the working hash table pointeed by @HashWorkingPointer.
2777  * The results are putting back to the initial hash table, returned through
2778  * the @HashResultPointer as the result hash table.
2779  **/
2780 static void
2781 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2782 {
2783         int t;
2784         uint32_t TEMP;
2785         uint32_t A, B, C, D, E;
2786         t = 16;
2787         do {
2788                 HashWorkingPointer[t] =
2789                     S(1,
2790                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2791                                                                      8] ^
2792                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2793         } while (++t <= 79);
2794         t = 0;
2795         A = HashResultPointer[0];
2796         B = HashResultPointer[1];
2797         C = HashResultPointer[2];
2798         D = HashResultPointer[3];
2799         E = HashResultPointer[4];
2800
2801         do {
2802                 if (t < 20) {
2803                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2804                 } else if (t < 40) {
2805                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2806                 } else if (t < 60) {
2807                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2808                 } else {
2809                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2810                 }
2811                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2812                 E = D;
2813                 D = C;
2814                 C = S(30, B);
2815                 B = A;
2816                 A = TEMP;
2817         } while (++t <= 79);
2818
2819         HashResultPointer[0] += A;
2820         HashResultPointer[1] += B;
2821         HashResultPointer[2] += C;
2822         HashResultPointer[3] += D;
2823         HashResultPointer[4] += E;
2824
2825 }
2826
2827 /**
2828  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2829  * @RandomChallenge: pointer to the entry of host challenge random number array.
2830  * @HashWorking: pointer to the entry of the working hash array.
2831  *
2832  * This routine calculates the working hash array referred by @HashWorking
2833  * from the challenge random numbers associated with the host, referred by
2834  * @RandomChallenge. The result is put into the entry of the working hash
2835  * array and returned by reference through @HashWorking.
2836  **/
2837 static void
2838 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2839 {
2840         *HashWorking = (*RandomChallenge ^ *HashWorking);
2841 }
2842
2843 /**
2844  * lpfc_hba_init - Perform special handling for LC HBA initialization
2845  * @phba: pointer to lpfc hba data structure.
2846  * @hbainit: pointer to an array of unsigned 32-bit integers.
2847  *
2848  * This routine performs the special handling for LC HBA initialization.
2849  **/
2850 void
2851 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2852 {
2853         int t;
2854         uint32_t *HashWorking;
2855         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2856
2857         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2858         if (!HashWorking)
2859                 return;
2860
2861         HashWorking[0] = HashWorking[78] = *pwwnn++;
2862         HashWorking[1] = HashWorking[79] = *pwwnn;
2863
2864         for (t = 0; t < 7; t++)
2865                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2866
2867         lpfc_sha_init(hbainit);
2868         lpfc_sha_iterate(hbainit, HashWorking);
2869         kfree(HashWorking);
2870 }
2871
2872 /**
2873  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2874  * @vport: pointer to a virtual N_Port data structure.
2875  *
2876  * This routine performs the necessary cleanups before deleting the @vport.
2877  * It invokes the discovery state machine to perform necessary state
2878  * transitions and to release the ndlps associated with the @vport. Note,
2879  * the physical port is treated as @vport 0.
2880  **/
2881 void
2882 lpfc_cleanup(struct lpfc_vport *vport)
2883 {
2884         struct lpfc_hba   *phba = vport->phba;
2885         struct lpfc_nodelist *ndlp, *next_ndlp;
2886         int i = 0;
2887
2888         if (phba->link_state > LPFC_LINK_DOWN)
2889                 lpfc_port_link_failure(vport);
2890
2891         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2892                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2893                     ndlp->nlp_DID == Fabric_DID) {
2894                         /* Just free up ndlp with Fabric_DID for vports */
2895                         lpfc_nlp_put(ndlp);
2896                         continue;
2897                 }
2898
2899                 if (ndlp->nlp_DID == Fabric_Cntl_DID &&
2900                     ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2901                         lpfc_nlp_put(ndlp);
2902                         continue;
2903                 }
2904
2905                 /* Fabric Ports not in UNMAPPED state are cleaned up in the
2906                  * DEVICE_RM event.
2907                  */
2908                 if (ndlp->nlp_type & NLP_FABRIC &&
2909                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
2910                         lpfc_disc_state_machine(vport, ndlp, NULL,
2911                                         NLP_EVT_DEVICE_RECOVERY);
2912
2913                 if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))
2914                         lpfc_disc_state_machine(vport, ndlp, NULL,
2915                                         NLP_EVT_DEVICE_RM);
2916         }
2917
2918         /* At this point, ALL ndlp's should be gone
2919          * because of the previous NLP_EVT_DEVICE_RM.
2920          * Lets wait for this to happen, if needed.
2921          */
2922         while (!list_empty(&vport->fc_nodes)) {
2923                 if (i++ > 3000) {
2924                         lpfc_printf_vlog(vport, KERN_ERR,
2925                                          LOG_TRACE_EVENT,
2926                                 "0233 Nodelist not empty\n");
2927                         list_for_each_entry_safe(ndlp, next_ndlp,
2928                                                 &vport->fc_nodes, nlp_listp) {
2929                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2930                                                  LOG_TRACE_EVENT,
2931                                                  "0282 did:x%x ndlp:x%px "
2932                                                  "refcnt:%d xflags x%x nflag x%x\n",
2933                                                  ndlp->nlp_DID, (void *)ndlp,
2934                                                  kref_read(&ndlp->kref),
2935                                                  ndlp->fc4_xpt_flags,
2936                                                  ndlp->nlp_flag);
2937                         }
2938                         break;
2939                 }
2940
2941                 /* Wait for any activity on ndlps to settle */
2942                 msleep(10);
2943         }
2944         lpfc_cleanup_vports_rrqs(vport, NULL);
2945 }
2946
2947 /**
2948  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2949  * @vport: pointer to a virtual N_Port data structure.
2950  *
2951  * This routine stops all the timers associated with a @vport. This function
2952  * is invoked before disabling or deleting a @vport. Note that the physical
2953  * port is treated as @vport 0.
2954  **/
2955 void
2956 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2957 {
2958         del_timer_sync(&vport->els_tmofunc);
2959         del_timer_sync(&vport->delayed_disc_tmo);
2960         lpfc_can_disctmo(vport);
2961         return;
2962 }
2963
2964 /**
2965  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2966  * @phba: pointer to lpfc hba data structure.
2967  *
2968  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2969  * caller of this routine should already hold the host lock.
2970  **/
2971 void
2972 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2973 {
2974         /* Clear pending FCF rediscovery wait flag */
2975         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2976
2977         /* Now, try to stop the timer */
2978         del_timer(&phba->fcf.redisc_wait);
2979 }
2980
2981 /**
2982  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2983  * @phba: pointer to lpfc hba data structure.
2984  *
2985  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2986  * checks whether the FCF rediscovery wait timer is pending with the host
2987  * lock held before proceeding with disabling the timer and clearing the
2988  * wait timer pendig flag.
2989  **/
2990 void
2991 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2992 {
2993         spin_lock_irq(&phba->hbalock);
2994         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2995                 /* FCF rediscovery timer already fired or stopped */
2996                 spin_unlock_irq(&phba->hbalock);
2997                 return;
2998         }
2999         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3000         /* Clear failover in progress flags */
3001         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
3002         spin_unlock_irq(&phba->hbalock);
3003 }
3004
3005 /**
3006  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
3007  * @phba: pointer to lpfc hba data structure.
3008  *
3009  * This routine stops all the timers associated with a HBA. This function is
3010  * invoked before either putting a HBA offline or unloading the driver.
3011  **/
3012 void
3013 lpfc_stop_hba_timers(struct lpfc_hba *phba)
3014 {
3015         if (phba->pport)
3016                 lpfc_stop_vport_timers(phba->pport);
3017         cancel_delayed_work_sync(&phba->eq_delay_work);
3018         cancel_delayed_work_sync(&phba->idle_stat_delay_work);
3019         del_timer_sync(&phba->sli.mbox_tmo);
3020         del_timer_sync(&phba->fabric_block_timer);
3021         del_timer_sync(&phba->eratt_poll);
3022         del_timer_sync(&phba->hb_tmofunc);
3023         if (phba->sli_rev == LPFC_SLI_REV4) {
3024                 del_timer_sync(&phba->rrq_tmr);
3025                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
3026         }
3027         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
3028
3029         switch (phba->pci_dev_grp) {
3030         case LPFC_PCI_DEV_LP:
3031                 /* Stop any LightPulse device specific driver timers */
3032                 del_timer_sync(&phba->fcp_poll_timer);
3033                 break;
3034         case LPFC_PCI_DEV_OC:
3035                 /* Stop any OneConnect device specific driver timers */
3036                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3037                 break;
3038         default:
3039                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3040                                 "0297 Invalid device group (x%x)\n",
3041                                 phba->pci_dev_grp);
3042                 break;
3043         }
3044         return;
3045 }
3046
3047 /**
3048  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
3049  * @phba: pointer to lpfc hba data structure.
3050  * @mbx_action: flag for mailbox no wait action.
3051  *
3052  * This routine marks a HBA's management interface as blocked. Once the HBA's
3053  * management interface is marked as blocked, all the user space access to
3054  * the HBA, whether they are from sysfs interface or libdfc interface will
3055  * all be blocked. The HBA is set to block the management interface when the
3056  * driver prepares the HBA interface for online or offline.
3057  **/
3058 static void
3059 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
3060 {
3061         unsigned long iflag;
3062         uint8_t actcmd = MBX_HEARTBEAT;
3063         unsigned long timeout;
3064
3065         spin_lock_irqsave(&phba->hbalock, iflag);
3066         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
3067         spin_unlock_irqrestore(&phba->hbalock, iflag);
3068         if (mbx_action == LPFC_MBX_NO_WAIT)
3069                 return;
3070         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
3071         spin_lock_irqsave(&phba->hbalock, iflag);
3072         if (phba->sli.mbox_active) {
3073                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
3074                 /* Determine how long we might wait for the active mailbox
3075                  * command to be gracefully completed by firmware.
3076                  */
3077                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
3078                                 phba->sli.mbox_active) * 1000) + jiffies;
3079         }
3080         spin_unlock_irqrestore(&phba->hbalock, iflag);
3081
3082         /* Wait for the outstnading mailbox command to complete */
3083         while (phba->sli.mbox_active) {
3084                 /* Check active mailbox complete status every 2ms */
3085                 msleep(2);
3086                 if (time_after(jiffies, timeout)) {
3087                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3088                                         "2813 Mgmt IO is Blocked %x "
3089                                         "- mbox cmd %x still active\n",
3090                                         phba->sli.sli_flag, actcmd);
3091                         break;
3092                 }
3093         }
3094 }
3095
3096 /**
3097  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
3098  * @phba: pointer to lpfc hba data structure.
3099  *
3100  * Allocate RPIs for all active remote nodes. This is needed whenever
3101  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3102  * is to fixup the temporary rpi assignments.
3103  **/
3104 void
3105 lpfc_sli4_node_prep(struct lpfc_hba *phba)
3106 {
3107         struct lpfc_nodelist  *ndlp, *next_ndlp;
3108         struct lpfc_vport **vports;
3109         int i, rpi;
3110
3111         if (phba->sli_rev != LPFC_SLI_REV4)
3112                 return;
3113
3114         vports = lpfc_create_vport_work_array(phba);
3115         if (vports == NULL)
3116                 return;
3117
3118         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3119                 if (vports[i]->load_flag & FC_UNLOADING)
3120                         continue;
3121
3122                 list_for_each_entry_safe(ndlp, next_ndlp,
3123                                          &vports[i]->fc_nodes,
3124                                          nlp_listp) {
3125                         rpi = lpfc_sli4_alloc_rpi(phba);
3126                         if (rpi == LPFC_RPI_ALLOC_ERROR) {
3127                                 /* TODO print log? */
3128                                 continue;
3129                         }
3130                         ndlp->nlp_rpi = rpi;
3131                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3132                                          LOG_NODE | LOG_DISCOVERY,
3133                                          "0009 Assign RPI x%x to ndlp x%px "
3134                                          "DID:x%06x flg:x%x\n",
3135                                          ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
3136                                          ndlp->nlp_flag);
3137                 }
3138         }
3139         lpfc_destroy_vport_work_array(phba, vports);
3140 }
3141
3142 /**
3143  * lpfc_create_expedite_pool - create expedite pool
3144  * @phba: pointer to lpfc hba data structure.
3145  *
3146  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3147  * to expedite pool. Mark them as expedite.
3148  **/
3149 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3150 {
3151         struct lpfc_sli4_hdw_queue *qp;
3152         struct lpfc_io_buf *lpfc_ncmd;
3153         struct lpfc_io_buf *lpfc_ncmd_next;
3154         struct lpfc_epd_pool *epd_pool;
3155         unsigned long iflag;
3156
3157         epd_pool = &phba->epd_pool;
3158         qp = &phba->sli4_hba.hdwq[0];
3159
3160         spin_lock_init(&epd_pool->lock);
3161         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3162         spin_lock(&epd_pool->lock);
3163         INIT_LIST_HEAD(&epd_pool->list);
3164         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3165                                  &qp->lpfc_io_buf_list_put, list) {
3166                 list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3167                 lpfc_ncmd->expedite = true;
3168                 qp->put_io_bufs--;
3169                 epd_pool->count++;
3170                 if (epd_pool->count >= XRI_BATCH)
3171                         break;
3172         }
3173         spin_unlock(&epd_pool->lock);
3174         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3175 }
3176
3177 /**
3178  * lpfc_destroy_expedite_pool - destroy expedite pool
3179  * @phba: pointer to lpfc hba data structure.
3180  *
3181  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3182  * of HWQ 0. Clear the mark.
3183  **/
3184 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3185 {
3186         struct lpfc_sli4_hdw_queue *qp;
3187         struct lpfc_io_buf *lpfc_ncmd;
3188         struct lpfc_io_buf *lpfc_ncmd_next;
3189         struct lpfc_epd_pool *epd_pool;
3190         unsigned long iflag;
3191
3192         epd_pool = &phba->epd_pool;
3193         qp = &phba->sli4_hba.hdwq[0];
3194
3195         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3196         spin_lock(&epd_pool->lock);
3197         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3198                                  &epd_pool->list, list) {
3199                 list_move_tail(&lpfc_ncmd->list,
3200                                &qp->lpfc_io_buf_list_put);
3201                 lpfc_ncmd->flags = false;
3202                 qp->put_io_bufs++;
3203                 epd_pool->count--;
3204         }
3205         spin_unlock(&epd_pool->lock);
3206         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3207 }
3208
3209 /**
3210  * lpfc_create_multixri_pools - create multi-XRI pools
3211  * @phba: pointer to lpfc hba data structure.
3212  *
3213  * This routine initialize public, private per HWQ. Then, move XRIs from
3214  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3215  * Initialized.
3216  **/
3217 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3218 {
3219         u32 i, j;
3220         u32 hwq_count;
3221         u32 count_per_hwq;
3222         struct lpfc_io_buf *lpfc_ncmd;
3223         struct lpfc_io_buf *lpfc_ncmd_next;
3224         unsigned long iflag;
3225         struct lpfc_sli4_hdw_queue *qp;
3226         struct lpfc_multixri_pool *multixri_pool;
3227         struct lpfc_pbl_pool *pbl_pool;
3228         struct lpfc_pvt_pool *pvt_pool;
3229
3230         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3231                         "1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3232                         phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3233                         phba->sli4_hba.io_xri_cnt);
3234
3235         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3236                 lpfc_create_expedite_pool(phba);
3237
3238         hwq_count = phba->cfg_hdw_queue;
3239         count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3240
3241         for (i = 0; i < hwq_count; i++) {
3242                 multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3243
3244                 if (!multixri_pool) {
3245                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3246                                         "1238 Failed to allocate memory for "
3247                                         "multixri_pool\n");
3248
3249                         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3250                                 lpfc_destroy_expedite_pool(phba);
3251
3252                         j = 0;
3253                         while (j < i) {
3254                                 qp = &phba->sli4_hba.hdwq[j];
3255                                 kfree(qp->p_multixri_pool);
3256                                 j++;
3257                         }
3258                         phba->cfg_xri_rebalancing = 0;
3259                         return;
3260                 }
3261
3262                 qp = &phba->sli4_hba.hdwq[i];
3263                 qp->p_multixri_pool = multixri_pool;
3264
3265                 multixri_pool->xri_limit = count_per_hwq;
3266                 multixri_pool->rrb_next_hwqid = i;
3267
3268                 /* Deal with public free xri pool */
3269                 pbl_pool = &multixri_pool->pbl_pool;
3270                 spin_lock_init(&pbl_pool->lock);
3271                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3272                 spin_lock(&pbl_pool->lock);
3273                 INIT_LIST_HEAD(&pbl_pool->list);
3274                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3275                                          &qp->lpfc_io_buf_list_put, list) {
3276                         list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3277                         qp->put_io_bufs--;
3278                         pbl_pool->count++;
3279                 }
3280                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3281                                 "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3282                                 pbl_pool->count, i);
3283                 spin_unlock(&pbl_pool->lock);
3284                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3285
3286                 /* Deal with private free xri pool */
3287                 pvt_pool = &multixri_pool->pvt_pool;
3288                 pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3289                 pvt_pool->low_watermark = XRI_BATCH;
3290                 spin_lock_init(&pvt_pool->lock);
3291                 spin_lock_irqsave(&pvt_pool->lock, iflag);
3292                 INIT_LIST_HEAD(&pvt_pool->list);
3293                 pvt_pool->count = 0;
3294                 spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3295         }
3296 }
3297
3298 /**
3299  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3300  * @phba: pointer to lpfc hba data structure.
3301  *
3302  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3303  **/
3304 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3305 {
3306         u32 i;
3307         u32 hwq_count;
3308         struct lpfc_io_buf *lpfc_ncmd;
3309         struct lpfc_io_buf *lpfc_ncmd_next;
3310         unsigned long iflag;
3311         struct lpfc_sli4_hdw_queue *qp;
3312         struct lpfc_multixri_pool *multixri_pool;
3313         struct lpfc_pbl_pool *pbl_pool;
3314         struct lpfc_pvt_pool *pvt_pool;
3315
3316         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3317                 lpfc_destroy_expedite_pool(phba);
3318
3319         if (!(phba->pport->load_flag & FC_UNLOADING))
3320                 lpfc_sli_flush_io_rings(phba);
3321
3322         hwq_count = phba->cfg_hdw_queue;
3323
3324         for (i = 0; i < hwq_count; i++) {
3325                 qp = &phba->sli4_hba.hdwq[i];
3326                 multixri_pool = qp->p_multixri_pool;
3327                 if (!multixri_pool)
3328                         continue;
3329
3330                 qp->p_multixri_pool = NULL;
3331
3332                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3333
3334                 /* Deal with public free xri pool */
3335                 pbl_pool = &multixri_pool->pbl_pool;
3336                 spin_lock(&pbl_pool->lock);
3337
3338                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3339                                 "1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3340                                 pbl_pool->count, i);
3341
3342                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3343                                          &pbl_pool->list, list) {
3344                         list_move_tail(&lpfc_ncmd->list,
3345                                        &qp->lpfc_io_buf_list_put);
3346                         qp->put_io_bufs++;
3347                         pbl_pool->count--;
3348                 }
3349
3350                 INIT_LIST_HEAD(&pbl_pool->list);
3351                 pbl_pool->count = 0;
3352
3353                 spin_unlock(&pbl_pool->lock);
3354
3355                 /* Deal with private free xri pool */
3356                 pvt_pool = &multixri_pool->pvt_pool;
3357                 spin_lock(&pvt_pool->lock);
3358
3359                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3360                                 "1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3361                                 pvt_pool->count, i);
3362
3363                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3364                                          &pvt_pool->list, list) {
3365                         list_move_tail(&lpfc_ncmd->list,
3366                                        &qp->lpfc_io_buf_list_put);
3367                         qp->put_io_bufs++;
3368                         pvt_pool->count--;
3369                 }
3370
3371                 INIT_LIST_HEAD(&pvt_pool->list);
3372                 pvt_pool->count = 0;
3373
3374                 spin_unlock(&pvt_pool->lock);
3375                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3376
3377                 kfree(multixri_pool);
3378         }
3379 }
3380
3381 /**
3382  * lpfc_online - Initialize and bring a HBA online
3383  * @phba: pointer to lpfc hba data structure.
3384  *
3385  * This routine initializes the HBA and brings a HBA online. During this
3386  * process, the management interface is blocked to prevent user space access
3387  * to the HBA interfering with the driver initialization.
3388  *
3389  * Return codes
3390  *   0 - successful
3391  *   1 - failed
3392  **/
3393 int
3394 lpfc_online(struct lpfc_hba *phba)
3395 {
3396         struct lpfc_vport *vport;
3397         struct lpfc_vport **vports;
3398         int i, error = 0;
3399         bool vpis_cleared = false;
3400
3401         if (!phba)
3402                 return 0;
3403         vport = phba->pport;
3404
3405         if (!(vport->fc_flag & FC_OFFLINE_MODE))
3406                 return 0;
3407
3408         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3409                         "0458 Bring Adapter online\n");
3410
3411         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3412
3413         if (phba->sli_rev == LPFC_SLI_REV4) {
3414                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3415                         lpfc_unblock_mgmt_io(phba);
3416                         return 1;
3417                 }
3418                 spin_lock_irq(&phba->hbalock);
3419                 if (!phba->sli4_hba.max_cfg_param.vpi_used)
3420                         vpis_cleared = true;
3421                 spin_unlock_irq(&phba->hbalock);
3422
3423                 /* Reestablish the local initiator port.
3424                  * The offline process destroyed the previous lport.
3425                  */
3426                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3427                                 !phba->nvmet_support) {
3428                         error = lpfc_nvme_create_localport(phba->pport);
3429                         if (error)
3430                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3431                                         "6132 NVME restore reg failed "
3432                                         "on nvmei error x%x\n", error);
3433                 }
3434         } else {
3435                 lpfc_sli_queue_init(phba);
3436                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
3437                         lpfc_unblock_mgmt_io(phba);
3438                         return 1;
3439                 }
3440         }
3441
3442         vports = lpfc_create_vport_work_array(phba);
3443         if (vports != NULL) {
3444                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3445                         struct Scsi_Host *shost;
3446                         shost = lpfc_shost_from_vport(vports[i]);
3447                         spin_lock_irq(shost->host_lock);
3448                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
3449                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3450                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3451                         if (phba->sli_rev == LPFC_SLI_REV4) {
3452                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
3453                                 if ((vpis_cleared) &&
3454                                     (vports[i]->port_type !=
3455                                         LPFC_PHYSICAL_PORT))
3456                                         vports[i]->vpi = 0;
3457                         }
3458                         spin_unlock_irq(shost->host_lock);
3459                 }
3460         }
3461         lpfc_destroy_vport_work_array(phba, vports);
3462
3463         if (phba->cfg_xri_rebalancing)
3464                 lpfc_create_multixri_pools(phba);
3465
3466         lpfc_cpuhp_add(phba);
3467
3468         lpfc_unblock_mgmt_io(phba);
3469         return 0;
3470 }
3471
3472 /**
3473  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3474  * @phba: pointer to lpfc hba data structure.
3475  *
3476  * This routine marks a HBA's management interface as not blocked. Once the
3477  * HBA's management interface is marked as not blocked, all the user space
3478  * access to the HBA, whether they are from sysfs interface or libdfc
3479  * interface will be allowed. The HBA is set to block the management interface
3480  * when the driver prepares the HBA interface for online or offline and then
3481  * set to unblock the management interface afterwards.
3482  **/
3483 void
3484 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3485 {
3486         unsigned long iflag;
3487
3488         spin_lock_irqsave(&phba->hbalock, iflag);
3489         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3490         spin_unlock_irqrestore(&phba->hbalock, iflag);
3491 }
3492
3493 /**
3494  * lpfc_offline_prep - Prepare a HBA to be brought offline
3495  * @phba: pointer to lpfc hba data structure.
3496  * @mbx_action: flag for mailbox shutdown action.
3497  *
3498  * This routine is invoked to prepare a HBA to be brought offline. It performs
3499  * unregistration login to all the nodes on all vports and flushes the mailbox
3500  * queue to make it ready to be brought offline.
3501  **/
3502 void
3503 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3504 {
3505         struct lpfc_vport *vport = phba->pport;
3506         struct lpfc_nodelist  *ndlp, *next_ndlp;
3507         struct lpfc_vport **vports;
3508         struct Scsi_Host *shost;
3509         int i;
3510
3511         if (vport->fc_flag & FC_OFFLINE_MODE)
3512                 return;
3513
3514         lpfc_block_mgmt_io(phba, mbx_action);
3515
3516         lpfc_linkdown(phba);
3517
3518         /* Issue an unreg_login to all nodes on all vports */
3519         vports = lpfc_create_vport_work_array(phba);
3520         if (vports != NULL) {
3521                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3522                         if (vports[i]->load_flag & FC_UNLOADING)
3523                                 continue;
3524                         shost = lpfc_shost_from_vport(vports[i]);
3525                         spin_lock_irq(shost->host_lock);
3526                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3527                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3528                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3529                         spin_unlock_irq(shost->host_lock);
3530
3531                         shost = lpfc_shost_from_vport(vports[i]);
3532                         list_for_each_entry_safe(ndlp, next_ndlp,
3533                                                  &vports[i]->fc_nodes,
3534                                                  nlp_listp) {
3535                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
3536                                         /* Driver must assume RPI is invalid for
3537                                          * any unused or inactive node.
3538                                          */
3539                                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3540                                         continue;
3541                                 }
3542
3543                                 spin_lock_irq(&ndlp->lock);
3544                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3545                                 spin_unlock_irq(&ndlp->lock);
3546                                 /*
3547                                  * Whenever an SLI4 port goes offline, free the
3548                                  * RPI. Get a new RPI when the adapter port
3549                                  * comes back online.
3550                                  */
3551                                 if (phba->sli_rev == LPFC_SLI_REV4) {
3552                                         lpfc_printf_vlog(vports[i], KERN_INFO,
3553                                                  LOG_NODE | LOG_DISCOVERY,
3554                                                  "0011 Free RPI x%x on "
3555                                                  "ndlp: %p did x%x\n",
3556                                                  ndlp->nlp_rpi, ndlp,
3557                                                  ndlp->nlp_DID);
3558                                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3559                                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3560                                 }
3561                                 lpfc_unreg_rpi(vports[i], ndlp);
3562
3563                                 if (ndlp->nlp_type & NLP_FABRIC) {
3564                                         lpfc_disc_state_machine(vports[i], ndlp,
3565                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
3566
3567                                         /* Don't remove the node unless the
3568                                          * has been unregistered with the
3569                                          * transport.  If so, let dev_loss
3570                                          * take care of the node.
3571                                          */
3572                                         if (!(ndlp->fc4_xpt_flags &
3573                                               (NVME_XPT_REGD | SCSI_XPT_REGD)))
3574                                                 lpfc_disc_state_machine
3575                                                         (vports[i], ndlp,
3576                                                          NULL,
3577                                                          NLP_EVT_DEVICE_RM);
3578                                 }
3579                         }
3580                 }
3581         }
3582         lpfc_destroy_vport_work_array(phba, vports);
3583
3584         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3585
3586         if (phba->wq)
3587                 flush_workqueue(phba->wq);
3588 }
3589
3590 /**
3591  * lpfc_offline - Bring a HBA offline
3592  * @phba: pointer to lpfc hba data structure.
3593  *
3594  * This routine actually brings a HBA offline. It stops all the timers
3595  * associated with the HBA, brings down the SLI layer, and eventually
3596  * marks the HBA as in offline state for the upper layer protocol.
3597  **/
3598 void
3599 lpfc_offline(struct lpfc_hba *phba)
3600 {
3601         struct Scsi_Host  *shost;
3602         struct lpfc_vport **vports;
3603         int i;
3604
3605         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3606                 return;
3607
3608         /* stop port and all timers associated with this hba */
3609         lpfc_stop_port(phba);
3610
3611         /* Tear down the local and target port registrations.  The
3612          * nvme transports need to cleanup.
3613          */
3614         lpfc_nvmet_destroy_targetport(phba);
3615         lpfc_nvme_destroy_localport(phba->pport);
3616
3617         vports = lpfc_create_vport_work_array(phba);
3618         if (vports != NULL)
3619                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3620                         lpfc_stop_vport_timers(vports[i]);
3621         lpfc_destroy_vport_work_array(phba, vports);
3622         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3623                         "0460 Bring Adapter offline\n");
3624         /* Bring down the SLI Layer and cleanup.  The HBA is offline
3625            now.  */
3626         lpfc_sli_hba_down(phba);
3627         spin_lock_irq(&phba->hbalock);
3628         phba->work_ha = 0;
3629         spin_unlock_irq(&phba->hbalock);
3630         vports = lpfc_create_vport_work_array(phba);
3631         if (vports != NULL)
3632                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3633                         shost = lpfc_shost_from_vport(vports[i]);
3634                         spin_lock_irq(shost->host_lock);
3635                         vports[i]->work_port_events = 0;
3636                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
3637                         spin_unlock_irq(shost->host_lock);
3638                 }
3639         lpfc_destroy_vport_work_array(phba, vports);
3640         /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled
3641          * in hba_unset
3642          */
3643         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3644                 __lpfc_cpuhp_remove(phba);
3645
3646         if (phba->cfg_xri_rebalancing)
3647                 lpfc_destroy_multixri_pools(phba);
3648 }
3649
3650 /**
3651  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3652  * @phba: pointer to lpfc hba data structure.
3653  *
3654  * This routine is to free all the SCSI buffers and IOCBs from the driver
3655  * list back to kernel. It is called from lpfc_pci_remove_one to free
3656  * the internal resources before the device is removed from the system.
3657  **/
3658 static void
3659 lpfc_scsi_free(struct lpfc_hba *phba)
3660 {
3661         struct lpfc_io_buf *sb, *sb_next;
3662
3663         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3664                 return;
3665
3666         spin_lock_irq(&phba->hbalock);
3667
3668         /* Release all the lpfc_scsi_bufs maintained by this host. */
3669
3670         spin_lock(&phba->scsi_buf_list_put_lock);
3671         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3672                                  list) {
3673                 list_del(&sb->list);
3674                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3675                               sb->dma_handle);
3676                 kfree(sb);
3677                 phba->total_scsi_bufs--;
3678         }
3679         spin_unlock(&phba->scsi_buf_list_put_lock);
3680
3681         spin_lock(&phba->scsi_buf_list_get_lock);
3682         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3683                                  list) {
3684                 list_del(&sb->list);
3685                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3686                               sb->dma_handle);
3687                 kfree(sb);
3688                 phba->total_scsi_bufs--;
3689         }
3690         spin_unlock(&phba->scsi_buf_list_get_lock);
3691         spin_unlock_irq(&phba->hbalock);
3692 }
3693
3694 /**
3695  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3696  * @phba: pointer to lpfc hba data structure.
3697  *
3698  * This routine is to free all the IO buffers and IOCBs from the driver
3699  * list back to kernel. It is called from lpfc_pci_remove_one to free
3700  * the internal resources before the device is removed from the system.
3701  **/
3702 void
3703 lpfc_io_free(struct lpfc_hba *phba)
3704 {
3705         struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3706         struct lpfc_sli4_hdw_queue *qp;
3707         int idx;
3708
3709         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3710                 qp = &phba->sli4_hba.hdwq[idx];
3711                 /* Release all the lpfc_nvme_bufs maintained by this host. */
3712                 spin_lock(&qp->io_buf_list_put_lock);
3713                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3714                                          &qp->lpfc_io_buf_list_put,
3715                                          list) {
3716                         list_del(&lpfc_ncmd->list);
3717                         qp->put_io_bufs--;
3718                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3719                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3720                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3721                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3722                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3723                         kfree(lpfc_ncmd);
3724                         qp->total_io_bufs--;
3725                 }
3726                 spin_unlock(&qp->io_buf_list_put_lock);
3727
3728                 spin_lock(&qp->io_buf_list_get_lock);
3729                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3730                                          &qp->lpfc_io_buf_list_get,
3731                                          list) {
3732                         list_del(&lpfc_ncmd->list);
3733                         qp->get_io_bufs--;
3734                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3735                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3736                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3737                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3738                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3739                         kfree(lpfc_ncmd);
3740                         qp->total_io_bufs--;
3741                 }
3742                 spin_unlock(&qp->io_buf_list_get_lock);
3743         }
3744 }
3745
3746 /**
3747  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
3748  * @phba: pointer to lpfc hba data structure.
3749  *
3750  * This routine first calculates the sizes of the current els and allocated
3751  * scsi sgl lists, and then goes through all sgls to updates the physical
3752  * XRIs assigned due to port function reset. During port initialization, the
3753  * current els and allocated scsi sgl lists are 0s.
3754  *
3755  * Return codes
3756  *   0 - successful (for now, it always returns 0)
3757  **/
3758 int
3759 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
3760 {
3761         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3762         uint16_t i, lxri, xri_cnt, els_xri_cnt;
3763         LIST_HEAD(els_sgl_list);
3764         int rc;
3765
3766         /*
3767          * update on pci function's els xri-sgl list
3768          */
3769         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3770
3771         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3772                 /* els xri-sgl expanded */
3773                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3774                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3775                                 "3157 ELS xri-sgl count increased from "
3776                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3777                                 els_xri_cnt);
3778                 /* allocate the additional els sgls */
3779                 for (i = 0; i < xri_cnt; i++) {
3780                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3781                                              GFP_KERNEL);
3782                         if (sglq_entry == NULL) {
3783                                 lpfc_printf_log(phba, KERN_ERR,
3784                                                 LOG_TRACE_EVENT,
3785                                                 "2562 Failure to allocate an "
3786                                                 "ELS sgl entry:%d\n", i);
3787                                 rc = -ENOMEM;
3788                                 goto out_free_mem;
3789                         }
3790                         sglq_entry->buff_type = GEN_BUFF_TYPE;
3791                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3792                                                            &sglq_entry->phys);
3793                         if (sglq_entry->virt == NULL) {
3794                                 kfree(sglq_entry);
3795                                 lpfc_printf_log(phba, KERN_ERR,
3796                                                 LOG_TRACE_EVENT,
3797                                                 "2563 Failure to allocate an "
3798                                                 "ELS mbuf:%d\n", i);
3799                                 rc = -ENOMEM;
3800                                 goto out_free_mem;
3801                         }
3802                         sglq_entry->sgl = sglq_entry->virt;
3803                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3804                         sglq_entry->state = SGL_FREED;
3805                         list_add_tail(&sglq_entry->list, &els_sgl_list);
3806                 }
3807                 spin_lock_irq(&phba->hbalock);
3808                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3809                 list_splice_init(&els_sgl_list,
3810                                  &phba->sli4_hba.lpfc_els_sgl_list);
3811                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3812                 spin_unlock_irq(&phba->hbalock);
3813         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3814                 /* els xri-sgl shrinked */
3815                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3816                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3817                                 "3158 ELS xri-sgl count decreased from "
3818                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3819                                 els_xri_cnt);
3820                 spin_lock_irq(&phba->hbalock);
3821                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3822                 list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
3823                                  &els_sgl_list);
3824                 /* release extra els sgls from list */
3825                 for (i = 0; i < xri_cnt; i++) {
3826                         list_remove_head(&els_sgl_list,
3827                                          sglq_entry, struct lpfc_sglq, list);
3828                         if (sglq_entry) {
3829                                 __lpfc_mbuf_free(phba, sglq_entry->virt,
3830                                                  sglq_entry->phys);
3831                                 kfree(sglq_entry);
3832                         }
3833                 }
3834                 list_splice_init(&els_sgl_list,
3835                                  &phba->sli4_hba.lpfc_els_sgl_list);
3836                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3837                 spin_unlock_irq(&phba->hbalock);
3838         } else
3839                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3840                                 "3163 ELS xri-sgl count unchanged: %d\n",
3841                                 els_xri_cnt);
3842         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3843
3844         /* update xris to els sgls on the list */
3845         sglq_entry = NULL;
3846         sglq_entry_next = NULL;
3847         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3848                                  &phba->sli4_hba.lpfc_els_sgl_list, list) {
3849                 lxri = lpfc_sli4_next_xritag(phba);
3850                 if (lxri == NO_XRI) {
3851                         lpfc_printf_log(phba, KERN_ERR,
3852                                         LOG_TRACE_EVENT,
3853                                         "2400 Failed to allocate xri for "
3854                                         "ELS sgl\n");
3855                         rc = -ENOMEM;
3856                         goto out_free_mem;
3857                 }
3858                 sglq_entry->sli4_lxritag = lxri;
3859                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3860         }
3861         return 0;
3862
3863 out_free_mem:
3864         lpfc_free_els_sgl_list(phba);
3865         return rc;
3866 }
3867
3868 /**
3869  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
3870  * @phba: pointer to lpfc hba data structure.
3871  *
3872  * This routine first calculates the sizes of the current els and allocated
3873  * scsi sgl lists, and then goes through all sgls to updates the physical
3874  * XRIs assigned due to port function reset. During port initialization, the
3875  * current els and allocated scsi sgl lists are 0s.
3876  *
3877  * Return codes
3878  *   0 - successful (for now, it always returns 0)
3879  **/
3880 int
3881 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
3882 {
3883         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3884         uint16_t i, lxri, xri_cnt, els_xri_cnt;
3885         uint16_t nvmet_xri_cnt;
3886         LIST_HEAD(nvmet_sgl_list);
3887         int rc;
3888
3889         /*
3890          * update on pci function's nvmet xri-sgl list
3891          */
3892         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3893
3894         /* For NVMET, ALL remaining XRIs are dedicated for IO processing */
3895         nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
3896         if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
3897                 /* els xri-sgl expanded */
3898                 xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
3899                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3900                                 "6302 NVMET xri-sgl cnt grew from %d to %d\n",
3901                                 phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
3902                 /* allocate the additional nvmet sgls */
3903                 for (i = 0; i < xri_cnt; i++) {
3904                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3905                                              GFP_KERNEL);
3906                         if (sglq_entry == NULL) {
3907                                 lpfc_printf_log(phba, KERN_ERR,
3908                                                 LOG_TRACE_EVENT,
3909                                                 "6303 Failure to allocate an "
3910                                                 "NVMET sgl entry:%d\n", i);
3911                                 rc = -ENOMEM;
3912                                 goto out_free_mem;
3913                         }
3914                         sglq_entry->buff_type = NVMET_BUFF_TYPE;
3915                         sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
3916                                                            &sglq_entry->phys);
3917                         if (sglq_entry->virt == NULL) {
3918                                 kfree(sglq_entry);
3919                                 lpfc_printf_log(phba, KERN_ERR,
3920                                                 LOG_TRACE_EVENT,
3921                                                 "6304 Failure to allocate an "
3922                                                 "NVMET buf:%d\n", i);
3923                                 rc = -ENOMEM;
3924                                 goto out_free_mem;
3925                         }
3926                         sglq_entry->sgl = sglq_entry->virt;
3927                         memset(sglq_entry->sgl, 0,
3928                                phba->cfg_sg_dma_buf_size);
3929                         sglq_entry->state = SGL_FREED;
3930                         list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
3931                 }
3932                 spin_lock_irq(&phba->hbalock);
3933                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3934                 list_splice_init(&nvmet_sgl_list,
3935                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
3936                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3937                 spin_unlock_irq(&phba->hbalock);
3938         } else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
3939                 /* nvmet xri-sgl shrunk */
3940                 xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
3941                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3942                                 "6305 NVMET xri-sgl count decreased from "
3943                                 "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
3944                                 nvmet_xri_cnt);
3945                 spin_lock_irq(&phba->hbalock);
3946                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3947                 list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
3948                                  &nvmet_sgl_list);
3949                 /* release extra nvmet sgls from list */
3950                 for (i = 0; i < xri_cnt; i++) {
3951                         list_remove_head(&nvmet_sgl_list,
3952                                          sglq_entry, struct lpfc_sglq, list);
3953                         if (sglq_entry) {
3954                                 lpfc_nvmet_buf_free(phba, sglq_entry->virt,
3955                                                     sglq_entry->phys);
3956                                 kfree(sglq_entry);
3957                         }
3958                 }
3959                 list_splice_init(&nvmet_sgl_list,
3960                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
3961                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3962                 spin_unlock_irq(&phba->hbalock);
3963         } else
3964                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3965                                 "6306 NVMET xri-sgl count unchanged: %d\n",
3966                                 nvmet_xri_cnt);
3967         phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
3968
3969         /* update xris to nvmet sgls on the list */
3970         sglq_entry = NULL;
3971         sglq_entry_next = NULL;
3972         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3973                                  &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
3974                 lxri = lpfc_sli4_next_xritag(phba);
3975                 if (lxri == NO_XRI) {
3976                         lpfc_printf_log(phba, KERN_ERR,
3977                                         LOG_TRACE_EVENT,
3978                                         "6307 Failed to allocate xri for "
3979                                         "NVMET sgl\n");
3980                         rc = -ENOMEM;
3981                         goto out_free_mem;
3982                 }
3983                 sglq_entry->sli4_lxritag = lxri;
3984                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3985         }
3986         return 0;
3987
3988 out_free_mem:
3989         lpfc_free_nvmet_sgl_list(phba);
3990         return rc;
3991 }
3992
3993 int
3994 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
3995 {
3996         LIST_HEAD(blist);
3997         struct lpfc_sli4_hdw_queue *qp;
3998         struct lpfc_io_buf *lpfc_cmd;
3999         struct lpfc_io_buf *iobufp, *prev_iobufp;
4000         int idx, cnt, xri, inserted;
4001
4002         cnt = 0;
4003         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4004                 qp = &phba->sli4_hba.hdwq[idx];
4005                 spin_lock_irq(&qp->io_buf_list_get_lock);
4006                 spin_lock(&qp->io_buf_list_put_lock);
4007
4008                 /* Take everything off the get and put lists */
4009                 list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
4010                 list_splice(&qp->lpfc_io_buf_list_put, &blist);
4011                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
4012                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
4013                 cnt += qp->get_io_bufs + qp->put_io_bufs;
4014                 qp->get_io_bufs = 0;
4015                 qp->put_io_bufs = 0;
4016                 qp->total_io_bufs = 0;
4017                 spin_unlock(&qp->io_buf_list_put_lock);
4018                 spin_unlock_irq(&qp->io_buf_list_get_lock);
4019         }
4020
4021         /*
4022          * Take IO buffers off blist and put on cbuf sorted by XRI.
4023          * This is because POST_SGL takes a sequential range of XRIs
4024          * to post to the firmware.
4025          */
4026         for (idx = 0; idx < cnt; idx++) {
4027                 list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
4028                 if (!lpfc_cmd)
4029                         return cnt;
4030                 if (idx == 0) {
4031                         list_add_tail(&lpfc_cmd->list, cbuf);
4032                         continue;
4033                 }
4034                 xri = lpfc_cmd->cur_iocbq.sli4_xritag;
4035                 inserted = 0;
4036                 prev_iobufp = NULL;
4037                 list_for_each_entry(iobufp, cbuf, list) {
4038                         if (xri < iobufp->cur_iocbq.sli4_xritag) {
4039                                 if (prev_iobufp)
4040                                         list_add(&lpfc_cmd->list,
4041                                                  &prev_iobufp->list);
4042                                 else
4043                                         list_add(&lpfc_cmd->list, cbuf);
4044                                 inserted = 1;
4045                                 break;
4046                         }
4047                         prev_iobufp = iobufp;
4048                 }
4049                 if (!inserted)
4050                         list_add_tail(&lpfc_cmd->list, cbuf);
4051         }
4052         return cnt;
4053 }
4054
4055 int
4056 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
4057 {
4058         struct lpfc_sli4_hdw_queue *qp;
4059         struct lpfc_io_buf *lpfc_cmd;
4060         int idx, cnt;
4061
4062         qp = phba->sli4_hba.hdwq;
4063         cnt = 0;
4064         while (!list_empty(cbuf)) {
4065                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4066                         list_remove_head(cbuf, lpfc_cmd,
4067                                          struct lpfc_io_buf, list);
4068                         if (!lpfc_cmd)
4069                                 return cnt;
4070                         cnt++;
4071                         qp = &phba->sli4_hba.hdwq[idx];
4072                         lpfc_cmd->hdwq_no = idx;
4073                         lpfc_cmd->hdwq = qp;
4074                         lpfc_cmd->cur_iocbq.wqe_cmpl = NULL;
4075                         lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
4076                         spin_lock(&qp->io_buf_list_put_lock);
4077                         list_add_tail(&lpfc_cmd->list,
4078                                       &qp->lpfc_io_buf_list_put);
4079                         qp->put_io_bufs++;
4080                         qp->total_io_bufs++;
4081                         spin_unlock(&qp->io_buf_list_put_lock);
4082                 }
4083         }
4084         return cnt;
4085 }
4086
4087 /**
4088  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
4089  * @phba: pointer to lpfc hba data structure.
4090  *
4091  * This routine first calculates the sizes of the current els and allocated
4092  * scsi sgl lists, and then goes through all sgls to updates the physical
4093  * XRIs assigned due to port function reset. During port initialization, the
4094  * current els and allocated scsi sgl lists are 0s.
4095  *
4096  * Return codes
4097  *   0 - successful (for now, it always returns 0)
4098  **/
4099 int
4100 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
4101 {
4102         struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4103         uint16_t i, lxri, els_xri_cnt;
4104         uint16_t io_xri_cnt, io_xri_max;
4105         LIST_HEAD(io_sgl_list);
4106         int rc, cnt;
4107
4108         /*
4109          * update on pci function's allocated nvme xri-sgl list
4110          */
4111
4112         /* maximum number of xris available for nvme buffers */
4113         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4114         io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4115         phba->sli4_hba.io_xri_max = io_xri_max;
4116
4117         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4118                         "6074 Current allocated XRI sgl count:%d, "
4119                         "maximum XRI count:%d\n",
4120                         phba->sli4_hba.io_xri_cnt,
4121                         phba->sli4_hba.io_xri_max);
4122
4123         cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4124
4125         if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4126                 /* max nvme xri shrunk below the allocated nvme buffers */
4127                 io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4128                                         phba->sli4_hba.io_xri_max;
4129                 /* release the extra allocated nvme buffers */
4130                 for (i = 0; i < io_xri_cnt; i++) {
4131                         list_remove_head(&io_sgl_list, lpfc_ncmd,
4132                                          struct lpfc_io_buf, list);
4133                         if (lpfc_ncmd) {
4134                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4135                                               lpfc_ncmd->data,
4136                                               lpfc_ncmd->dma_handle);
4137                                 kfree(lpfc_ncmd);
4138                         }
4139                 }
4140                 phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4141         }
4142
4143         /* update xris associated to remaining allocated nvme buffers */
4144         lpfc_ncmd = NULL;
4145         lpfc_ncmd_next = NULL;
4146         phba->sli4_hba.io_xri_cnt = cnt;
4147         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4148                                  &io_sgl_list, list) {
4149                 lxri = lpfc_sli4_next_xritag(phba);
4150                 if (lxri == NO_XRI) {
4151                         lpfc_printf_log(phba, KERN_ERR,
4152                                         LOG_TRACE_EVENT,
4153                                         "6075 Failed to allocate xri for "
4154                                         "nvme buffer\n");
4155                         rc = -ENOMEM;
4156                         goto out_free_mem;
4157                 }
4158                 lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4159                 lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4160         }
4161         cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4162         return 0;
4163
4164 out_free_mem:
4165         lpfc_io_free(phba);
4166         return rc;
4167 }
4168
4169 /**
4170  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4171  * @phba: Pointer to lpfc hba data structure.
4172  * @num_to_alloc: The requested number of buffers to allocate.
4173  *
4174  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4175  * the nvme buffer contains all the necessary information needed to initiate
4176  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4177  * them on a list, it post them to the port by using SGL block post.
4178  *
4179  * Return codes:
4180  *   int - number of IO buffers that were allocated and posted.
4181  *   0 = failure, less than num_to_alloc is a partial failure.
4182  **/
4183 int
4184 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4185 {
4186         struct lpfc_io_buf *lpfc_ncmd;
4187         struct lpfc_iocbq *pwqeq;
4188         uint16_t iotag, lxri = 0;
4189         int bcnt, num_posted;
4190         LIST_HEAD(prep_nblist);
4191         LIST_HEAD(post_nblist);
4192         LIST_HEAD(nvme_nblist);
4193
4194         phba->sli4_hba.io_xri_cnt = 0;
4195         for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4196                 lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4197                 if (!lpfc_ncmd)
4198                         break;
4199                 /*
4200                  * Get memory from the pci pool to map the virt space to
4201                  * pci bus space for an I/O. The DMA buffer includes the
4202                  * number of SGE's necessary to support the sg_tablesize.
4203                  */
4204                 lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4205                                                   GFP_KERNEL,
4206                                                   &lpfc_ncmd->dma_handle);
4207                 if (!lpfc_ncmd->data) {
4208                         kfree(lpfc_ncmd);
4209                         break;
4210                 }
4211
4212                 if (phba->cfg_xpsgl && !phba->nvmet_support) {
4213                         INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4214                 } else {
4215                         /*
4216                          * 4K Page alignment is CRITICAL to BlockGuard, double
4217                          * check to be sure.
4218                          */
4219                         if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4220                             (((unsigned long)(lpfc_ncmd->data) &
4221                             (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4222                                 lpfc_printf_log(phba, KERN_ERR,
4223                                                 LOG_TRACE_EVENT,
4224                                                 "3369 Memory alignment err: "
4225                                                 "addr=%lx\n",
4226                                                 (unsigned long)lpfc_ncmd->data);
4227                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4228                                               lpfc_ncmd->data,
4229                                               lpfc_ncmd->dma_handle);
4230                                 kfree(lpfc_ncmd);
4231                                 break;
4232                         }
4233                 }
4234
4235                 INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4236
4237                 lxri = lpfc_sli4_next_xritag(phba);
4238                 if (lxri == NO_XRI) {
4239                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4240                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4241                         kfree(lpfc_ncmd);
4242                         break;
4243                 }
4244                 pwqeq = &lpfc_ncmd->cur_iocbq;
4245
4246                 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4247                 iotag = lpfc_sli_next_iotag(phba, pwqeq);
4248                 if (iotag == 0) {
4249                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4250                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4251                         kfree(lpfc_ncmd);
4252                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4253                                         "6121 Failed to allocate IOTAG for"
4254                                         " XRI:0x%x\n", lxri);
4255                         lpfc_sli4_free_xri(phba, lxri);
4256                         break;
4257                 }
4258                 pwqeq->sli4_lxritag = lxri;
4259                 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4260                 pwqeq->context1 = lpfc_ncmd;
4261
4262                 /* Initialize local short-hand pointers. */
4263                 lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4264                 lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4265                 lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
4266                 spin_lock_init(&lpfc_ncmd->buf_lock);
4267
4268                 /* add the nvme buffer to a post list */
4269                 list_add_tail(&lpfc_ncmd->list, &post_nblist);
4270                 phba->sli4_hba.io_xri_cnt++;
4271         }
4272         lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4273                         "6114 Allocate %d out of %d requested new NVME "
4274                         "buffers\n", bcnt, num_to_alloc);
4275
4276         /* post the list of nvme buffer sgls to port if available */
4277         if (!list_empty(&post_nblist))
4278                 num_posted = lpfc_sli4_post_io_sgl_list(
4279                                 phba, &post_nblist, bcnt);
4280         else
4281                 num_posted = 0;
4282
4283         return num_posted;
4284 }
4285
4286 static uint64_t
4287 lpfc_get_wwpn(struct lpfc_hba *phba)
4288 {
4289         uint64_t wwn;
4290         int rc;
4291         LPFC_MBOXQ_t *mboxq;
4292         MAILBOX_t *mb;
4293
4294         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4295                                                 GFP_KERNEL);
4296         if (!mboxq)
4297                 return (uint64_t)-1;
4298
4299         /* First get WWN of HBA instance */
4300         lpfc_read_nv(phba, mboxq);
4301         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4302         if (rc != MBX_SUCCESS) {
4303                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4304                                 "6019 Mailbox failed , mbxCmd x%x "
4305                                 "READ_NV, mbxStatus x%x\n",
4306                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4307                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4308                 mempool_free(mboxq, phba->mbox_mem_pool);
4309                 return (uint64_t) -1;
4310         }
4311         mb = &mboxq->u.mb;
4312         memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4313         /* wwn is WWPN of HBA instance */
4314         mempool_free(mboxq, phba->mbox_mem_pool);
4315         if (phba->sli_rev == LPFC_SLI_REV4)
4316                 return be64_to_cpu(wwn);
4317         else
4318                 return rol64(wwn, 32);
4319 }
4320
4321 /**
4322  * lpfc_create_port - Create an FC port
4323  * @phba: pointer to lpfc hba data structure.
4324  * @instance: a unique integer ID to this FC port.
4325  * @dev: pointer to the device data structure.
4326  *
4327  * This routine creates a FC port for the upper layer protocol. The FC port
4328  * can be created on top of either a physical port or a virtual port provided
4329  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4330  * and associates the FC port created before adding the shost into the SCSI
4331  * layer.
4332  *
4333  * Return codes
4334  *   @vport - pointer to the virtual N_Port data structure.
4335  *   NULL - port create failed.
4336  **/
4337 struct lpfc_vport *
4338 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4339 {
4340         struct lpfc_vport *vport;
4341         struct Scsi_Host  *shost = NULL;
4342         struct scsi_host_template *template;
4343         int error = 0;
4344         int i;
4345         uint64_t wwn;
4346         bool use_no_reset_hba = false;
4347         int rc;
4348
4349         if (lpfc_no_hba_reset_cnt) {
4350                 if (phba->sli_rev < LPFC_SLI_REV4 &&
4351                     dev == &phba->pcidev->dev) {
4352                         /* Reset the port first */
4353                         lpfc_sli_brdrestart(phba);
4354                         rc = lpfc_sli_chipset_init(phba);
4355                         if (rc)
4356                                 return NULL;
4357                 }
4358                 wwn = lpfc_get_wwpn(phba);
4359         }
4360
4361         for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4362                 if (wwn == lpfc_no_hba_reset[i]) {
4363                         lpfc_printf_log(phba, KERN_ERR,
4364                                         LOG_TRACE_EVENT,
4365                                         "6020 Setting use_no_reset port=%llx\n",
4366                                         wwn);
4367                         use_no_reset_hba = true;
4368                         break;
4369                 }
4370         }
4371
4372         /* Seed template for SCSI host registration */
4373         if (dev == &phba->pcidev->dev) {
4374                 template = &phba->port_template;
4375
4376                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4377                         /* Seed physical port template */
4378                         memcpy(template, &lpfc_template, sizeof(*template));
4379
4380                         if (use_no_reset_hba)
4381                                 /* template is for a no reset SCSI Host */
4382                                 template->eh_host_reset_handler = NULL;
4383
4384                         /* Template for all vports this physical port creates */
4385                         memcpy(&phba->vport_template, &lpfc_template,
4386                                sizeof(*template));
4387                         phba->vport_template.shost_attrs = lpfc_vport_attrs;
4388                         phba->vport_template.eh_bus_reset_handler = NULL;
4389                         phba->vport_template.eh_host_reset_handler = NULL;
4390                         phba->vport_template.vendor_id = 0;
4391
4392                         /* Initialize the host templates with updated value */
4393                         if (phba->sli_rev == LPFC_SLI_REV4) {
4394                                 template->sg_tablesize = phba->cfg_scsi_seg_cnt;
4395                                 phba->vport_template.sg_tablesize =
4396                                         phba->cfg_scsi_seg_cnt;
4397                         } else {
4398                                 template->sg_tablesize = phba->cfg_sg_seg_cnt;
4399                                 phba->vport_template.sg_tablesize =
4400                                         phba->cfg_sg_seg_cnt;
4401                         }
4402
4403                 } else {
4404                         /* NVMET is for physical port only */
4405                         memcpy(template, &lpfc_template_nvme,
4406                                sizeof(*template));
4407                 }
4408         } else {
4409                 template = &phba->vport_template;
4410         }
4411
4412         shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
4413         if (!shost)
4414                 goto out;
4415
4416         vport = (struct lpfc_vport *) shost->hostdata;
4417         vport->phba = phba;
4418         vport->load_flag |= FC_LOADING;
4419         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4420         vport->fc_rscn_flush = 0;
4421         lpfc_get_vport_cfgparam(vport);
4422
4423         /* Adjust value in vport */
4424         vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4425
4426         shost->unique_id = instance;
4427         shost->max_id = LPFC_MAX_TARGET;
4428         shost->max_lun = vport->cfg_max_luns;
4429         shost->this_id = -1;
4430         shost->max_cmd_len = 16;
4431
4432         if (phba->sli_rev == LPFC_SLI_REV4) {
4433                 if (!phba->cfg_fcp_mq_threshold ||
4434                     phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4435                         phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4436
4437                 shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4438                                             phba->cfg_fcp_mq_threshold);
4439
4440                 shost->dma_boundary =
4441                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4442
4443                 if (phba->cfg_xpsgl && !phba->nvmet_support)
4444                         shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
4445                 else
4446                         shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
4447         } else
4448                 /* SLI-3 has a limited number of hardware queues (3),
4449                  * thus there is only one for FCP processing.
4450                  */
4451                 shost->nr_hw_queues = 1;
4452
4453         /*
4454          * Set initial can_queue value since 0 is no longer supported and
4455          * scsi_add_host will fail. This will be adjusted later based on the
4456          * max xri value determined in hba setup.
4457          */
4458         shost->can_queue = phba->cfg_hba_queue_depth - 10;
4459         if (dev != &phba->pcidev->dev) {
4460                 shost->transportt = lpfc_vport_transport_template;
4461                 vport->port_type = LPFC_NPIV_PORT;
4462         } else {
4463                 shost->transportt = lpfc_transport_template;
4464                 vport->port_type = LPFC_PHYSICAL_PORT;
4465         }
4466
4467         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
4468                         "9081 CreatePort TMPLATE type %x TBLsize %d "
4469                         "SEGcnt %d/%d\n",
4470                         vport->port_type, shost->sg_tablesize,
4471                         phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
4472
4473         /* Initialize all internally managed lists. */
4474         INIT_LIST_HEAD(&vport->fc_nodes);
4475         INIT_LIST_HEAD(&vport->rcv_buffer_list);
4476         spin_lock_init(&vport->work_port_lock);
4477
4478         timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4479
4480         timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4481
4482         timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4483
4484         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4485                 lpfc_setup_bg(phba, shost);
4486
4487         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4488         if (error)
4489                 goto out_put_shost;
4490
4491         spin_lock_irq(&phba->port_list_lock);
4492         list_add_tail(&vport->listentry, &phba->port_list);
4493         spin_unlock_irq(&phba->port_list_lock);
4494         return vport;
4495
4496 out_put_shost:
4497         scsi_host_put(shost);
4498 out:
4499         return NULL;
4500 }
4501
4502 /**
4503  * destroy_port -  destroy an FC port
4504  * @vport: pointer to an lpfc virtual N_Port data structure.
4505  *
4506  * This routine destroys a FC port from the upper layer protocol. All the
4507  * resources associated with the port are released.
4508  **/
4509 void
4510 destroy_port(struct lpfc_vport *vport)
4511 {
4512         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4513         struct lpfc_hba  *phba = vport->phba;
4514
4515         lpfc_debugfs_terminate(vport);
4516         fc_remove_host(shost);
4517         scsi_remove_host(shost);
4518
4519         spin_lock_irq(&phba->port_list_lock);
4520         list_del_init(&vport->listentry);
4521         spin_unlock_irq(&phba->port_list_lock);
4522
4523         lpfc_cleanup(vport);
4524         return;
4525 }
4526
4527 /**
4528  * lpfc_get_instance - Get a unique integer ID
4529  *
4530  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4531  * uses the kernel idr facility to perform the task.
4532  *
4533  * Return codes:
4534  *   instance - a unique integer ID allocated as the new instance.
4535  *   -1 - lpfc get instance failed.
4536  **/
4537 int
4538 lpfc_get_instance(void)
4539 {
4540         int ret;
4541
4542         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4543         return ret < 0 ? -1 : ret;
4544 }
4545
4546 /**
4547  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4548  * @shost: pointer to SCSI host data structure.
4549  * @time: elapsed time of the scan in jiffies.
4550  *
4551  * This routine is called by the SCSI layer with a SCSI host to determine
4552  * whether the scan host is finished.
4553  *
4554  * Note: there is no scan_start function as adapter initialization will have
4555  * asynchronously kicked off the link initialization.
4556  *
4557  * Return codes
4558  *   0 - SCSI host scan is not over yet.
4559  *   1 - SCSI host scan is over.
4560  **/
4561 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4562 {
4563         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4564         struct lpfc_hba   *phba = vport->phba;
4565         int stat = 0;
4566
4567         spin_lock_irq(shost->host_lock);
4568
4569         if (vport->load_flag & FC_UNLOADING) {
4570                 stat = 1;
4571                 goto finished;
4572         }
4573         if (time >= msecs_to_jiffies(30 * 1000)) {
4574                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4575                                 "0461 Scanning longer than 30 "
4576                                 "seconds.  Continuing initialization\n");
4577                 stat = 1;
4578                 goto finished;
4579         }
4580         if (time >= msecs_to_jiffies(15 * 1000) &&
4581             phba->link_state <= LPFC_LINK_DOWN) {
4582                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4583                                 "0465 Link down longer than 15 "
4584                                 "seconds.  Continuing initialization\n");
4585                 stat = 1;
4586                 goto finished;
4587         }
4588
4589         if (vport->port_state != LPFC_VPORT_READY)
4590                 goto finished;
4591         if (vport->num_disc_nodes || vport->fc_prli_sent)
4592                 goto finished;
4593         if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
4594                 goto finished;
4595         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4596                 goto finished;
4597
4598         stat = 1;
4599
4600 finished:
4601         spin_unlock_irq(shost->host_lock);
4602         return stat;
4603 }
4604
4605 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4606 {
4607         struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4608         struct lpfc_hba   *phba = vport->phba;
4609
4610         fc_host_supported_speeds(shost) = 0;
4611         /*
4612          * Avoid reporting supported link speed for FCoE as it can't be
4613          * controlled via FCoE.
4614          */
4615         if (phba->hba_flag & HBA_FCOE_MODE)
4616                 return;
4617
4618         if (phba->lmt & LMT_128Gb)
4619                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4620         if (phba->lmt & LMT_64Gb)
4621                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4622         if (phba->lmt & LMT_32Gb)
4623                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4624         if (phba->lmt & LMT_16Gb)
4625                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4626         if (phba->lmt & LMT_10Gb)
4627                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4628         if (phba->lmt & LMT_8Gb)
4629                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4630         if (phba->lmt & LMT_4Gb)
4631                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4632         if (phba->lmt & LMT_2Gb)
4633                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4634         if (phba->lmt & LMT_1Gb)
4635                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4636 }
4637
4638 /**
4639  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
4640  * @shost: pointer to SCSI host data structure.
4641  *
4642  * This routine initializes a given SCSI host attributes on a FC port. The
4643  * SCSI host can be either on top of a physical port or a virtual port.
4644  **/
4645 void lpfc_host_attrib_init(struct Scsi_Host *shost)
4646 {
4647         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4648         struct lpfc_hba   *phba = vport->phba;
4649         /*
4650          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
4651          */
4652
4653         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4654         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4655         fc_host_supported_classes(shost) = FC_COS_CLASS3;
4656
4657         memset(fc_host_supported_fc4s(shost), 0,
4658                sizeof(fc_host_supported_fc4s(shost)));
4659         fc_host_supported_fc4s(shost)[2] = 1;
4660         fc_host_supported_fc4s(shost)[7] = 1;
4661
4662         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
4663                                  sizeof fc_host_symbolic_name(shost));
4664
4665         lpfc_host_supported_speeds_set(shost);
4666
4667         fc_host_maxframe_size(shost) =
4668                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
4669                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
4670
4671         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
4672
4673         /* This value is also unchanging */
4674         memset(fc_host_active_fc4s(shost), 0,
4675                sizeof(fc_host_active_fc4s(shost)));
4676         fc_host_active_fc4s(shost)[2] = 1;
4677         fc_host_active_fc4s(shost)[7] = 1;
4678
4679         fc_host_max_npiv_vports(shost) = phba->max_vpi;
4680         spin_lock_irq(shost->host_lock);
4681         vport->load_flag &= ~FC_LOADING;
4682         spin_unlock_irq(shost->host_lock);
4683 }
4684
4685 /**
4686  * lpfc_stop_port_s3 - Stop SLI3 device port
4687  * @phba: pointer to lpfc hba data structure.
4688  *
4689  * This routine is invoked to stop an SLI3 device port, it stops the device
4690  * from generating interrupts and stops the device driver's timers for the
4691  * device.
4692  **/
4693 static void
4694 lpfc_stop_port_s3(struct lpfc_hba *phba)
4695 {
4696         /* Clear all interrupt enable conditions */
4697         writel(0, phba->HCregaddr);
4698         readl(phba->HCregaddr); /* flush */
4699         /* Clear all pending interrupts */
4700         writel(0xffffffff, phba->HAregaddr);
4701         readl(phba->HAregaddr); /* flush */
4702
4703         /* Reset some HBA SLI setup states */
4704         lpfc_stop_hba_timers(phba);
4705         phba->pport->work_port_events = 0;
4706 }
4707
4708 /**
4709  * lpfc_stop_port_s4 - Stop SLI4 device port
4710  * @phba: pointer to lpfc hba data structure.
4711  *
4712  * This routine is invoked to stop an SLI4 device port, it stops the device
4713  * from generating interrupts and stops the device driver's timers for the
4714  * device.
4715  **/
4716 static void
4717 lpfc_stop_port_s4(struct lpfc_hba *phba)
4718 {
4719         /* Reset some HBA SLI4 setup states */
4720         lpfc_stop_hba_timers(phba);
4721         if (phba->pport)
4722                 phba->pport->work_port_events = 0;
4723         phba->sli4_hba.intr_enable = 0;
4724 }
4725
4726 /**
4727  * lpfc_stop_port - Wrapper function for stopping hba port
4728  * @phba: Pointer to HBA context object.
4729  *
4730  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
4731  * the API jump table function pointer from the lpfc_hba struct.
4732  **/
4733 void
4734 lpfc_stop_port(struct lpfc_hba *phba)
4735 {
4736         phba->lpfc_stop_port(phba);
4737
4738         if (phba->wq)
4739                 flush_workqueue(phba->wq);
4740 }
4741
4742 /**
4743  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
4744  * @phba: Pointer to hba for which this call is being executed.
4745  *
4746  * This routine starts the timer waiting for the FCF rediscovery to complete.
4747  **/
4748 void
4749 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
4750 {
4751         unsigned long fcf_redisc_wait_tmo =
4752                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
4753         /* Start fcf rediscovery wait period timer */
4754         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
4755         spin_lock_irq(&phba->hbalock);
4756         /* Allow action to new fcf asynchronous event */
4757         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
4758         /* Mark the FCF rediscovery pending state */
4759         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
4760         spin_unlock_irq(&phba->hbalock);
4761 }
4762
4763 /**
4764  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
4765  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
4766  *
4767  * This routine is invoked when waiting for FCF table rediscover has been
4768  * timed out. If new FCF record(s) has (have) been discovered during the
4769  * wait period, a new FCF event shall be added to the FCOE async event
4770  * list, and then worker thread shall be waked up for processing from the
4771  * worker thread context.
4772  **/
4773 static void
4774 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
4775 {
4776         struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
4777
4778         /* Don't send FCF rediscovery event if timer cancelled */
4779         spin_lock_irq(&phba->hbalock);
4780         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
4781                 spin_unlock_irq(&phba->hbalock);
4782                 return;
4783         }
4784         /* Clear FCF rediscovery timer pending flag */
4785         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
4786         /* FCF rediscovery event to worker thread */
4787         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
4788         spin_unlock_irq(&phba->hbalock);
4789         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
4790                         "2776 FCF rediscover quiescent timer expired\n");
4791         /* wake up worker thread */
4792         lpfc_worker_wake_up(phba);
4793 }
4794
4795 /**
4796  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
4797  * @phba: pointer to lpfc hba data structure.
4798  * @acqe_link: pointer to the async link completion queue entry.
4799  *
4800  * This routine is to parse the SLI4 link-attention link fault code.
4801  **/
4802 static void
4803 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
4804                            struct lpfc_acqe_link *acqe_link)
4805 {
4806         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
4807         case LPFC_ASYNC_LINK_FAULT_NONE:
4808         case LPFC_ASYNC_LINK_FAULT_LOCAL:
4809         case LPFC_ASYNC_LINK_FAULT_REMOTE:
4810         case LPFC_ASYNC_LINK_FAULT_LR_LRR:
4811                 break;
4812         default:
4813                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4814                                 "0398 Unknown link fault code: x%x\n",
4815                                 bf_get(lpfc_acqe_link_fault, acqe_link));
4816                 break;
4817         }
4818 }
4819
4820 /**
4821  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
4822  * @phba: pointer to lpfc hba data structure.
4823  * @acqe_link: pointer to the async link completion queue entry.
4824  *
4825  * This routine is to parse the SLI4 link attention type and translate it
4826  * into the base driver's link attention type coding.
4827  *
4828  * Return: Link attention type in terms of base driver's coding.
4829  **/
4830 static uint8_t
4831 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
4832                           struct lpfc_acqe_link *acqe_link)
4833 {
4834         uint8_t att_type;
4835
4836         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
4837         case LPFC_ASYNC_LINK_STATUS_DOWN:
4838         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
4839                 att_type = LPFC_ATT_LINK_DOWN;
4840                 break;
4841         case LPFC_ASYNC_LINK_STATUS_UP:
4842                 /* Ignore physical link up events - wait for logical link up */
4843                 att_type = LPFC_ATT_RESERVED;
4844                 break;
4845         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
4846                 att_type = LPFC_ATT_LINK_UP;
4847                 break;
4848         default:
4849                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4850                                 "0399 Invalid link attention type: x%x\n",
4851                                 bf_get(lpfc_acqe_link_status, acqe_link));
4852                 att_type = LPFC_ATT_RESERVED;
4853                 break;
4854         }
4855         return att_type;
4856 }
4857
4858 /**
4859  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
4860  * @phba: pointer to lpfc hba data structure.
4861  *
4862  * This routine is to get an SLI3 FC port's link speed in Mbps.
4863  *
4864  * Return: link speed in terms of Mbps.
4865  **/
4866 uint32_t
4867 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
4868 {
4869         uint32_t link_speed;
4870
4871         if (!lpfc_is_link_up(phba))
4872                 return 0;
4873
4874         if (phba->sli_rev <= LPFC_SLI_REV3) {
4875                 switch (phba->fc_linkspeed) {
4876                 case LPFC_LINK_SPEED_1GHZ:
4877                         link_speed = 1000;
4878                         break;
4879                 case LPFC_LINK_SPEED_2GHZ:
4880                         link_speed = 2000;
4881                         break;
4882                 case LPFC_LINK_SPEED_4GHZ:
4883                         link_speed = 4000;
4884                         break;
4885                 case LPFC_LINK_SPEED_8GHZ:
4886                         link_speed = 8000;
4887                         break;
4888                 case LPFC_LINK_SPEED_10GHZ:
4889                         link_speed = 10000;
4890                         break;
4891                 case LPFC_LINK_SPEED_16GHZ:
4892                         link_speed = 16000;
4893                         break;
4894                 default:
4895                         link_speed = 0;
4896                 }
4897         } else {
4898                 if (phba->sli4_hba.link_state.logical_speed)
4899                         link_speed =
4900                               phba->sli4_hba.link_state.logical_speed;
4901                 else
4902                         link_speed = phba->sli4_hba.link_state.speed;
4903         }
4904         return link_speed;
4905 }
4906
4907 /**
4908  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
4909  * @phba: pointer to lpfc hba data structure.
4910  * @evt_code: asynchronous event code.
4911  * @speed_code: asynchronous event link speed code.
4912  *
4913  * This routine is to parse the giving SLI4 async event link speed code into
4914  * value of Mbps for the link speed.
4915  *
4916  * Return: link speed in terms of Mbps.
4917  **/
4918 static uint32_t
4919 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
4920                            uint8_t speed_code)
4921 {
4922         uint32_t port_speed;
4923
4924         switch (evt_code) {
4925         case LPFC_TRAILER_CODE_LINK:
4926                 switch (speed_code) {
4927                 case LPFC_ASYNC_LINK_SPEED_ZERO:
4928                         port_speed = 0;
4929                         break;
4930                 case LPFC_ASYNC_LINK_SPEED_10MBPS:
4931                         port_speed = 10;
4932                         break;
4933                 case LPFC_ASYNC_LINK_SPEED_100MBPS:
4934                         port_speed = 100;
4935                         break;
4936                 case LPFC_ASYNC_LINK_SPEED_1GBPS:
4937                         port_speed = 1000;
4938                         break;
4939                 case LPFC_ASYNC_LINK_SPEED_10GBPS:
4940                         port_speed = 10000;
4941                         break;
4942                 case LPFC_ASYNC_LINK_SPEED_20GBPS:
4943                         port_speed = 20000;
4944                         break;
4945                 case LPFC_ASYNC_LINK_SPEED_25GBPS:
4946                         port_speed = 25000;
4947                         break;
4948                 case LPFC_ASYNC_LINK_SPEED_40GBPS:
4949                         port_speed = 40000;
4950                         break;
4951                 case LPFC_ASYNC_LINK_SPEED_100GBPS:
4952                         port_speed = 100000;
4953                         break;
4954                 default:
4955                         port_speed = 0;
4956                 }
4957                 break;
4958         case LPFC_TRAILER_CODE_FC:
4959                 switch (speed_code) {
4960                 case LPFC_FC_LA_SPEED_UNKNOWN:
4961                         port_speed = 0;
4962                         break;
4963                 case LPFC_FC_LA_SPEED_1G:
4964                         port_speed = 1000;
4965                         break;
4966                 case LPFC_FC_LA_SPEED_2G:
4967                         port_speed = 2000;
4968                         break;
4969                 case LPFC_FC_LA_SPEED_4G:
4970                         port_speed = 4000;
4971                         break;
4972                 case LPFC_FC_LA_SPEED_8G:
4973                         port_speed = 8000;
4974                         break;
4975                 case LPFC_FC_LA_SPEED_10G:
4976                         port_speed = 10000;
4977                         break;
4978                 case LPFC_FC_LA_SPEED_16G:
4979                         port_speed = 16000;
4980                         break;
4981                 case LPFC_FC_LA_SPEED_32G:
4982                         port_speed = 32000;
4983                         break;
4984                 case LPFC_FC_LA_SPEED_64G:
4985                         port_speed = 64000;
4986                         break;
4987                 case LPFC_FC_LA_SPEED_128G:
4988                         port_speed = 128000;
4989                         break;
4990                 default:
4991                         port_speed = 0;
4992                 }
4993                 break;
4994         default:
4995                 port_speed = 0;
4996         }
4997         return port_speed;
4998 }
4999
5000 /**
5001  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
5002  * @phba: pointer to lpfc hba data structure.
5003  * @acqe_link: pointer to the async link completion queue entry.
5004  *
5005  * This routine is to handle the SLI4 asynchronous FCoE link event.
5006  **/
5007 static void
5008 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
5009                          struct lpfc_acqe_link *acqe_link)
5010 {
5011         struct lpfc_dmabuf *mp;
5012         LPFC_MBOXQ_t *pmb;
5013         MAILBOX_t *mb;
5014         struct lpfc_mbx_read_top *la;
5015         uint8_t att_type;
5016         int rc;
5017
5018         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
5019         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
5020                 return;
5021         phba->fcoe_eventtag = acqe_link->event_tag;
5022         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5023         if (!pmb) {
5024                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5025                                 "0395 The mboxq allocation failed\n");
5026                 return;
5027         }
5028         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5029         if (!mp) {
5030                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5031                                 "0396 The lpfc_dmabuf allocation failed\n");
5032                 goto out_free_pmb;
5033         }
5034         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5035         if (!mp->virt) {
5036                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5037                                 "0397 The mbuf allocation failed\n");
5038                 goto out_free_dmabuf;
5039         }
5040
5041         /* Cleanup any outstanding ELS commands */
5042         lpfc_els_flush_all_cmd(phba);
5043
5044         /* Block ELS IOCBs until we have done process link event */
5045         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5046
5047         /* Update link event statistics */
5048         phba->sli.slistat.link_event++;
5049
5050         /* Create lpfc_handle_latt mailbox command from link ACQE */
5051         lpfc_read_topology(phba, pmb, mp);
5052         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5053         pmb->vport = phba->pport;
5054
5055         /* Keep the link status for extra SLI4 state machine reference */
5056         phba->sli4_hba.link_state.speed =
5057                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
5058                                 bf_get(lpfc_acqe_link_speed, acqe_link));
5059         phba->sli4_hba.link_state.duplex =
5060                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
5061         phba->sli4_hba.link_state.status =
5062                                 bf_get(lpfc_acqe_link_status, acqe_link);
5063         phba->sli4_hba.link_state.type =
5064                                 bf_get(lpfc_acqe_link_type, acqe_link);
5065         phba->sli4_hba.link_state.number =
5066                                 bf_get(lpfc_acqe_link_number, acqe_link);
5067         phba->sli4_hba.link_state.fault =
5068                                 bf_get(lpfc_acqe_link_fault, acqe_link);
5069         phba->sli4_hba.link_state.logical_speed =
5070                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
5071
5072         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5073                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
5074                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
5075                         "Logical speed:%dMbps Fault:%d\n",
5076                         phba->sli4_hba.link_state.speed,
5077                         phba->sli4_hba.link_state.topology,
5078                         phba->sli4_hba.link_state.status,
5079                         phba->sli4_hba.link_state.type,
5080                         phba->sli4_hba.link_state.number,
5081                         phba->sli4_hba.link_state.logical_speed,
5082                         phba->sli4_hba.link_state.fault);
5083         /*
5084          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
5085          * topology info. Note: Optional for non FC-AL ports.
5086          */
5087         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
5088                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5089                 if (rc == MBX_NOT_FINISHED)
5090                         goto out_free_dmabuf;
5091                 return;
5092         }
5093         /*
5094          * For FCoE Mode: fill in all the topology information we need and call
5095          * the READ_TOPOLOGY completion routine to continue without actually
5096          * sending the READ_TOPOLOGY mailbox command to the port.
5097          */
5098         /* Initialize completion status */
5099         mb = &pmb->u.mb;
5100         mb->mbxStatus = MBX_SUCCESS;
5101
5102         /* Parse port fault information field */
5103         lpfc_sli4_parse_latt_fault(phba, acqe_link);
5104
5105         /* Parse and translate link attention fields */
5106         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
5107         la->eventTag = acqe_link->event_tag;
5108         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
5109         bf_set(lpfc_mbx_read_top_link_spd, la,
5110                (bf_get(lpfc_acqe_link_speed, acqe_link)));
5111
5112         /* Fake the the following irrelvant fields */
5113         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
5114         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
5115         bf_set(lpfc_mbx_read_top_il, la, 0);
5116         bf_set(lpfc_mbx_read_top_pb, la, 0);
5117         bf_set(lpfc_mbx_read_top_fa, la, 0);
5118         bf_set(lpfc_mbx_read_top_mm, la, 0);
5119
5120         /* Invoke the lpfc_handle_latt mailbox command callback function */
5121         lpfc_mbx_cmpl_read_topology(phba, pmb);
5122
5123         return;
5124
5125 out_free_dmabuf:
5126         kfree(mp);
5127 out_free_pmb:
5128         mempool_free(pmb, phba->mbox_mem_pool);
5129 }
5130
5131 /**
5132  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
5133  * topology.
5134  * @phba: pointer to lpfc hba data structure.
5135  * @speed_code: asynchronous event link speed code.
5136  *
5137  * This routine is to parse the giving SLI4 async event link speed code into
5138  * value of Read topology link speed.
5139  *
5140  * Return: link speed in terms of Read topology.
5141  **/
5142 static uint8_t
5143 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
5144 {
5145         uint8_t port_speed;
5146
5147         switch (speed_code) {
5148         case LPFC_FC_LA_SPEED_1G:
5149                 port_speed = LPFC_LINK_SPEED_1GHZ;
5150                 break;
5151         case LPFC_FC_LA_SPEED_2G:
5152                 port_speed = LPFC_LINK_SPEED_2GHZ;
5153                 break;
5154         case LPFC_FC_LA_SPEED_4G:
5155                 port_speed = LPFC_LINK_SPEED_4GHZ;
5156                 break;
5157         case LPFC_FC_LA_SPEED_8G:
5158                 port_speed = LPFC_LINK_SPEED_8GHZ;
5159                 break;
5160         case LPFC_FC_LA_SPEED_16G:
5161                 port_speed = LPFC_LINK_SPEED_16GHZ;
5162                 break;
5163         case LPFC_FC_LA_SPEED_32G:
5164                 port_speed = LPFC_LINK_SPEED_32GHZ;
5165                 break;
5166         case LPFC_FC_LA_SPEED_64G:
5167                 port_speed = LPFC_LINK_SPEED_64GHZ;
5168                 break;
5169         case LPFC_FC_LA_SPEED_128G:
5170                 port_speed = LPFC_LINK_SPEED_128GHZ;
5171                 break;
5172         case LPFC_FC_LA_SPEED_256G:
5173                 port_speed = LPFC_LINK_SPEED_256GHZ;
5174                 break;
5175         default:
5176                 port_speed = 0;
5177                 break;
5178         }
5179
5180         return port_speed;
5181 }
5182
5183 #define trunk_link_status(__idx)\
5184         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5185                ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
5186                 "Link up" : "Link down") : "NA"
5187 /* Did port __idx reported an error */
5188 #define trunk_port_fault(__idx)\
5189         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5190                (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
5191
5192 static void
5193 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
5194                               struct lpfc_acqe_fc_la *acqe_fc)
5195 {
5196         uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
5197         uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
5198
5199         phba->sli4_hba.link_state.speed =
5200                 lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5201                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5202
5203         phba->sli4_hba.link_state.logical_speed =
5204                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5205         /* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
5206         phba->fc_linkspeed =
5207                  lpfc_async_link_speed_to_read_top(
5208                                 phba,
5209                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5210
5211         if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
5212                 phba->trunk_link.link0.state =
5213                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
5214                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5215                 phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
5216         }
5217         if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
5218                 phba->trunk_link.link1.state =
5219                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
5220                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5221                 phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
5222         }
5223         if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
5224                 phba->trunk_link.link2.state =
5225                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
5226                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5227                 phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
5228         }
5229         if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
5230                 phba->trunk_link.link3.state =
5231                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
5232                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5233                 phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
5234         }
5235
5236         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5237                         "2910 Async FC Trunking Event - Speed:%d\n"
5238                         "\tLogical speed:%d "
5239                         "port0: %s port1: %s port2: %s port3: %s\n",
5240                         phba->sli4_hba.link_state.speed,
5241                         phba->sli4_hba.link_state.logical_speed,
5242                         trunk_link_status(0), trunk_link_status(1),
5243                         trunk_link_status(2), trunk_link_status(3));
5244
5245         if (port_fault)
5246                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5247                                 "3202 trunk error:0x%x (%s) seen on port0:%s "
5248                                 /*
5249                                  * SLI-4: We have only 0xA error codes
5250                                  * defined as of now. print an appropriate
5251                                  * message in case driver needs to be updated.
5252                                  */
5253                                 "port1:%s port2:%s port3:%s\n", err, err > 0xA ?
5254                                 "UNDEFINED. update driver." : trunk_errmsg[err],
5255                                 trunk_port_fault(0), trunk_port_fault(1),
5256                                 trunk_port_fault(2), trunk_port_fault(3));
5257 }
5258
5259
5260 /**
5261  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
5262  * @phba: pointer to lpfc hba data structure.
5263  * @acqe_fc: pointer to the async fc completion queue entry.
5264  *
5265  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
5266  * that the event was received and then issue a read_topology mailbox command so
5267  * that the rest of the driver will treat it the same as SLI3.
5268  **/
5269 static void
5270 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
5271 {
5272         struct lpfc_dmabuf *mp;
5273         LPFC_MBOXQ_t *pmb;
5274         MAILBOX_t *mb;
5275         struct lpfc_mbx_read_top *la;
5276         int rc;
5277
5278         if (bf_get(lpfc_trailer_type, acqe_fc) !=
5279             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
5280                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5281                                 "2895 Non FC link Event detected.(%d)\n",
5282                                 bf_get(lpfc_trailer_type, acqe_fc));
5283                 return;
5284         }
5285
5286         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5287             LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
5288                 lpfc_update_trunk_link_status(phba, acqe_fc);
5289                 return;
5290         }
5291
5292         /* Keep the link status for extra SLI4 state machine reference */
5293         phba->sli4_hba.link_state.speed =
5294                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5295                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5296         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
5297         phba->sli4_hba.link_state.topology =
5298                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
5299         phba->sli4_hba.link_state.status =
5300                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
5301         phba->sli4_hba.link_state.type =
5302                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
5303         phba->sli4_hba.link_state.number =
5304                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
5305         phba->sli4_hba.link_state.fault =
5306                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
5307
5308         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5309             LPFC_FC_LA_TYPE_LINK_DOWN)
5310                 phba->sli4_hba.link_state.logical_speed = 0;
5311         else if (!phba->sli4_hba.conf_trunk)
5312                 phba->sli4_hba.link_state.logical_speed =
5313                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5314
5315         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5316                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
5317                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
5318                         "%dMbps Fault:%d\n",
5319                         phba->sli4_hba.link_state.speed,
5320                         phba->sli4_hba.link_state.topology,
5321                         phba->sli4_hba.link_state.status,
5322                         phba->sli4_hba.link_state.type,
5323                         phba->sli4_hba.link_state.number,
5324                         phba->sli4_hba.link_state.logical_speed,
5325                         phba->sli4_hba.link_state.fault);
5326         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5327         if (!pmb) {
5328                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5329                                 "2897 The mboxq allocation failed\n");
5330                 return;
5331         }
5332         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5333         if (!mp) {
5334                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5335                                 "2898 The lpfc_dmabuf allocation failed\n");
5336                 goto out_free_pmb;
5337         }
5338         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5339         if (!mp->virt) {
5340                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5341                                 "2899 The mbuf allocation failed\n");
5342                 goto out_free_dmabuf;
5343         }
5344
5345         /* Cleanup any outstanding ELS commands */
5346         lpfc_els_flush_all_cmd(phba);
5347
5348         /* Block ELS IOCBs until we have done process link event */
5349         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5350
5351         /* Update link event statistics */
5352         phba->sli.slistat.link_event++;
5353
5354         /* Create lpfc_handle_latt mailbox command from link ACQE */
5355         lpfc_read_topology(phba, pmb, mp);
5356         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5357         pmb->vport = phba->pport;
5358
5359         if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
5360                 phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
5361
5362                 switch (phba->sli4_hba.link_state.status) {
5363                 case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
5364                         phba->link_flag |= LS_MDS_LINK_DOWN;
5365                         break;
5366                 case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
5367                         phba->link_flag |= LS_MDS_LOOPBACK;
5368                         break;
5369                 default:
5370                         break;
5371                 }
5372
5373                 /* Initialize completion status */
5374                 mb = &pmb->u.mb;
5375                 mb->mbxStatus = MBX_SUCCESS;
5376
5377                 /* Parse port fault information field */
5378                 lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
5379
5380                 /* Parse and translate link attention fields */
5381                 la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
5382                 la->eventTag = acqe_fc->event_tag;
5383
5384                 if (phba->sli4_hba.link_state.status ==
5385                     LPFC_FC_LA_TYPE_UNEXP_WWPN) {
5386                         bf_set(lpfc_mbx_read_top_att_type, la,
5387                                LPFC_FC_LA_TYPE_UNEXP_WWPN);
5388                 } else {
5389                         bf_set(lpfc_mbx_read_top_att_type, la,
5390                                LPFC_FC_LA_TYPE_LINK_DOWN);
5391                 }
5392                 /* Invoke the mailbox command callback function */
5393                 lpfc_mbx_cmpl_read_topology(phba, pmb);
5394
5395                 return;
5396         }
5397
5398         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5399         if (rc == MBX_NOT_FINISHED)
5400                 goto out_free_dmabuf;
5401         return;
5402
5403 out_free_dmabuf:
5404         kfree(mp);
5405 out_free_pmb:
5406         mempool_free(pmb, phba->mbox_mem_pool);
5407 }
5408
5409 /**
5410  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
5411  * @phba: pointer to lpfc hba data structure.
5412  * @acqe_sli: pointer to the async SLI completion queue entry.
5413  *
5414  * This routine is to handle the SLI4 asynchronous SLI events.
5415  **/
5416 static void
5417 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
5418 {
5419         char port_name;
5420         char message[128];
5421         uint8_t status;
5422         uint8_t evt_type;
5423         uint8_t operational = 0;
5424         struct temp_event temp_event_data;
5425         struct lpfc_acqe_misconfigured_event *misconfigured;
5426         struct Scsi_Host  *shost;
5427         struct lpfc_vport **vports;
5428         int rc, i;
5429
5430         evt_type = bf_get(lpfc_trailer_type, acqe_sli);
5431
5432         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5433                         "2901 Async SLI event - Type:%d, Event Data: x%08x "
5434                         "x%08x x%08x x%08x\n", evt_type,
5435                         acqe_sli->event_data1, acqe_sli->event_data2,
5436                         acqe_sli->reserved, acqe_sli->trailer);
5437
5438         port_name = phba->Port[0];
5439         if (port_name == 0x00)
5440                 port_name = '?'; /* get port name is empty */
5441
5442         switch (evt_type) {
5443         case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
5444                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5445                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
5446                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5447
5448                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5449                                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
5450                                 acqe_sli->event_data1, port_name);
5451
5452                 phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
5453                 shost = lpfc_shost_from_vport(phba->pport);
5454                 fc_host_post_vendor_event(shost, fc_get_event_number(),
5455                                           sizeof(temp_event_data),
5456                                           (char *)&temp_event_data,
5457                                           SCSI_NL_VID_TYPE_PCI
5458                                           | PCI_VENDOR_ID_EMULEX);
5459                 break;
5460         case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
5461                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5462                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
5463                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5464
5465                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5466                                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
5467                                 acqe_sli->event_data1, port_name);
5468
5469                 shost = lpfc_shost_from_vport(phba->pport);
5470                 fc_host_post_vendor_event(shost, fc_get_event_number(),
5471                                           sizeof(temp_event_data),
5472                                           (char *)&temp_event_data,
5473                                           SCSI_NL_VID_TYPE_PCI
5474                                           | PCI_VENDOR_ID_EMULEX);
5475                 break;
5476         case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
5477                 misconfigured = (struct lpfc_acqe_misconfigured_event *)
5478                                         &acqe_sli->event_data1;
5479
5480                 /* fetch the status for this port */
5481                 switch (phba->sli4_hba.lnk_info.lnk_no) {
5482                 case LPFC_LINK_NUMBER_0:
5483                         status = bf_get(lpfc_sli_misconfigured_port0_state,
5484                                         &misconfigured->theEvent);
5485                         operational = bf_get(lpfc_sli_misconfigured_port0_op,
5486                                         &misconfigured->theEvent);
5487                         break;
5488                 case LPFC_LINK_NUMBER_1:
5489                         status = bf_get(lpfc_sli_misconfigured_port1_state,
5490                                         &misconfigured->theEvent);
5491                         operational = bf_get(lpfc_sli_misconfigured_port1_op,
5492                                         &misconfigured->theEvent);
5493                         break;
5494                 case LPFC_LINK_NUMBER_2:
5495                         status = bf_get(lpfc_sli_misconfigured_port2_state,
5496                                         &misconfigured->theEvent);
5497                         operational = bf_get(lpfc_sli_misconfigured_port2_op,
5498                                         &misconfigured->theEvent);
5499                         break;
5500                 case LPFC_LINK_NUMBER_3:
5501                         status = bf_get(lpfc_sli_misconfigured_port3_state,
5502                                         &misconfigured->theEvent);
5503                         operational = bf_get(lpfc_sli_misconfigured_port3_op,
5504                                         &misconfigured->theEvent);
5505                         break;
5506                 default:
5507                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5508                                         "3296 "
5509                                         "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
5510                                         "event: Invalid link %d",
5511                                         phba->sli4_hba.lnk_info.lnk_no);
5512                         return;
5513                 }
5514
5515                 /* Skip if optic state unchanged */
5516                 if (phba->sli4_hba.lnk_info.optic_state == status)
5517                         return;
5518
5519                 switch (status) {
5520                 case LPFC_SLI_EVENT_STATUS_VALID:
5521                         sprintf(message, "Physical Link is functional");
5522                         break;
5523                 case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
5524                         sprintf(message, "Optics faulted/incorrectly "
5525                                 "installed/not installed - Reseat optics, "
5526                                 "if issue not resolved, replace.");
5527                         break;
5528                 case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
5529                         sprintf(message,
5530                                 "Optics of two types installed - Remove one "
5531                                 "optic or install matching pair of optics.");
5532                         break;
5533                 case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
5534                         sprintf(message, "Incompatible optics - Replace with "
5535                                 "compatible optics for card to function.");
5536                         break;
5537                 case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
5538                         sprintf(message, "Unqualified optics - Replace with "
5539                                 "Avago optics for Warranty and Technical "
5540                                 "Support - Link is%s operational",
5541                                 (operational) ? " not" : "");
5542                         break;
5543                 case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
5544                         sprintf(message, "Uncertified optics - Replace with "
5545                                 "Avago-certified optics to enable link "
5546                                 "operation - Link is%s operational",
5547                                 (operational) ? " not" : "");
5548                         break;
5549                 default:
5550                         /* firmware is reporting a status we don't know about */
5551                         sprintf(message, "Unknown event status x%02x", status);
5552                         break;
5553                 }
5554
5555                 /* Issue READ_CONFIG mbox command to refresh supported speeds */
5556                 rc = lpfc_sli4_read_config(phba);
5557                 if (rc) {
5558                         phba->lmt = 0;
5559                         lpfc_printf_log(phba, KERN_ERR,
5560                                         LOG_TRACE_EVENT,
5561                                         "3194 Unable to retrieve supported "
5562                                         "speeds, rc = 0x%x\n", rc);
5563                 }
5564                 vports = lpfc_create_vport_work_array(phba);
5565                 if (vports != NULL) {
5566                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5567                                         i++) {
5568                                 shost = lpfc_shost_from_vport(vports[i]);
5569                                 lpfc_host_supported_speeds_set(shost);
5570                         }
5571                 }
5572                 lpfc_destroy_vport_work_array(phba, vports);
5573
5574                 phba->sli4_hba.lnk_info.optic_state = status;
5575                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5576                                 "3176 Port Name %c %s\n", port_name, message);
5577                 break;
5578         case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
5579                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5580                                 "3192 Remote DPort Test Initiated - "
5581                                 "Event Data1:x%08x Event Data2: x%08x\n",
5582                                 acqe_sli->event_data1, acqe_sli->event_data2);
5583                 break;
5584         case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
5585                 /* Misconfigured WWN. Reports that the SLI Port is configured
5586                  * to use FA-WWN, but the attached device doesn’t support it.
5587                  * No driver action is required.
5588                  * Event Data1 - N.A, Event Data2 - N.A
5589                  */
5590                 lpfc_log_msg(phba, KERN_WARNING, LOG_SLI,
5591                              "2699 Misconfigured FA-WWN - Attached device does "
5592                              "not support FA-WWN\n");
5593                 break;
5594         case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
5595                 /* EEPROM failure. No driver action is required */
5596                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5597                              "2518 EEPROM failure - "
5598                              "Event Data1: x%08x Event Data2: x%08x\n",
5599                              acqe_sli->event_data1, acqe_sli->event_data2);
5600                 break;
5601         default:
5602                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5603                                 "3193 Unrecognized SLI event, type: 0x%x",
5604                                 evt_type);
5605                 break;
5606         }
5607 }
5608
5609 /**
5610  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
5611  * @vport: pointer to vport data structure.
5612  *
5613  * This routine is to perform Clear Virtual Link (CVL) on a vport in
5614  * response to a CVL event.
5615  *
5616  * Return the pointer to the ndlp with the vport if successful, otherwise
5617  * return NULL.
5618  **/
5619 static struct lpfc_nodelist *
5620 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
5621 {
5622         struct lpfc_nodelist *ndlp;
5623         struct Scsi_Host *shost;
5624         struct lpfc_hba *phba;
5625
5626         if (!vport)
5627                 return NULL;
5628         phba = vport->phba;
5629         if (!phba)
5630                 return NULL;
5631         ndlp = lpfc_findnode_did(vport, Fabric_DID);
5632         if (!ndlp) {
5633                 /* Cannot find existing Fabric ndlp, so allocate a new one */
5634                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
5635                 if (!ndlp)
5636                         return 0;
5637                 /* Set the node type */
5638                 ndlp->nlp_type |= NLP_FABRIC;
5639                 /* Put ndlp onto node list */
5640                 lpfc_enqueue_node(vport, ndlp);
5641         }
5642         if ((phba->pport->port_state < LPFC_FLOGI) &&
5643                 (phba->pport->port_state != LPFC_VPORT_FAILED))
5644                 return NULL;
5645         /* If virtual link is not yet instantiated ignore CVL */
5646         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
5647                 && (vport->port_state != LPFC_VPORT_FAILED))
5648                 return NULL;
5649         shost = lpfc_shost_from_vport(vport);
5650         if (!shost)
5651                 return NULL;
5652         lpfc_linkdown_port(vport);
5653         lpfc_cleanup_pending_mbox(vport);
5654         spin_lock_irq(shost->host_lock);
5655         vport->fc_flag |= FC_VPORT_CVL_RCVD;
5656         spin_unlock_irq(shost->host_lock);
5657
5658         return ndlp;
5659 }
5660
5661 /**
5662  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
5663  * @phba: pointer to lpfc hba data structure.
5664  *
5665  * This routine is to perform Clear Virtual Link (CVL) on all vports in
5666  * response to a FCF dead event.
5667  **/
5668 static void
5669 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
5670 {
5671         struct lpfc_vport **vports;
5672         int i;
5673
5674         vports = lpfc_create_vport_work_array(phba);
5675         if (vports)
5676                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
5677                         lpfc_sli4_perform_vport_cvl(vports[i]);
5678         lpfc_destroy_vport_work_array(phba, vports);
5679 }
5680
5681 /**
5682  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
5683  * @phba: pointer to lpfc hba data structure.
5684  * @acqe_fip: pointer to the async fcoe completion queue entry.
5685  *
5686  * This routine is to handle the SLI4 asynchronous fcoe event.
5687  **/
5688 static void
5689 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
5690                         struct lpfc_acqe_fip *acqe_fip)
5691 {
5692         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
5693         int rc;
5694         struct lpfc_vport *vport;
5695         struct lpfc_nodelist *ndlp;
5696         int active_vlink_present;
5697         struct lpfc_vport **vports;
5698         int i;
5699
5700         phba->fc_eventTag = acqe_fip->event_tag;
5701         phba->fcoe_eventtag = acqe_fip->event_tag;
5702         switch (event_type) {
5703         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
5704         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
5705                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
5706                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5707                                         "2546 New FCF event, evt_tag:x%x, "
5708                                         "index:x%x\n",
5709                                         acqe_fip->event_tag,
5710                                         acqe_fip->index);
5711                 else
5712                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
5713                                         LOG_DISCOVERY,
5714                                         "2788 FCF param modified event, "
5715                                         "evt_tag:x%x, index:x%x\n",
5716                                         acqe_fip->event_tag,
5717                                         acqe_fip->index);
5718                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5719                         /*
5720                          * During period of FCF discovery, read the FCF
5721                          * table record indexed by the event to update
5722                          * FCF roundrobin failover eligible FCF bmask.
5723                          */
5724                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5725                                         LOG_DISCOVERY,
5726                                         "2779 Read FCF (x%x) for updating "
5727                                         "roundrobin FCF failover bmask\n",
5728                                         acqe_fip->index);
5729                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
5730                 }
5731
5732                 /* If the FCF discovery is in progress, do nothing. */
5733                 spin_lock_irq(&phba->hbalock);
5734                 if (phba->hba_flag & FCF_TS_INPROG) {
5735                         spin_unlock_irq(&phba->hbalock);
5736                         break;
5737                 }
5738                 /* If fast FCF failover rescan event is pending, do nothing */
5739                 if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
5740                         spin_unlock_irq(&phba->hbalock);
5741                         break;
5742                 }
5743
5744                 /* If the FCF has been in discovered state, do nothing. */
5745                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
5746                         spin_unlock_irq(&phba->hbalock);
5747                         break;
5748                 }
5749                 spin_unlock_irq(&phba->hbalock);
5750
5751                 /* Otherwise, scan the entire FCF table and re-discover SAN */
5752                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5753                                 "2770 Start FCF table scan per async FCF "
5754                                 "event, evt_tag:x%x, index:x%x\n",
5755                                 acqe_fip->event_tag, acqe_fip->index);
5756                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
5757                                                      LPFC_FCOE_FCF_GET_FIRST);
5758                 if (rc)
5759                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5760                                         "2547 Issue FCF scan read FCF mailbox "
5761                                         "command failed (x%x)\n", rc);
5762                 break;
5763
5764         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
5765                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5766                                 "2548 FCF Table full count 0x%x tag 0x%x\n",
5767                                 bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
5768                                 acqe_fip->event_tag);
5769                 break;
5770
5771         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
5772                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5773                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5774                                 "2549 FCF (x%x) disconnected from network, "
5775                                  "tag:x%x\n", acqe_fip->index,
5776                                  acqe_fip->event_tag);
5777                 /*
5778                  * If we are in the middle of FCF failover process, clear
5779                  * the corresponding FCF bit in the roundrobin bitmap.
5780                  */
5781                 spin_lock_irq(&phba->hbalock);
5782                 if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
5783                     (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
5784                         spin_unlock_irq(&phba->hbalock);
5785                         /* Update FLOGI FCF failover eligible FCF bmask */
5786                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
5787                         break;
5788                 }
5789                 spin_unlock_irq(&phba->hbalock);
5790
5791                 /* If the event is not for currently used fcf do nothing */
5792                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
5793                         break;
5794
5795                 /*
5796                  * Otherwise, request the port to rediscover the entire FCF
5797                  * table for a fast recovery from case that the current FCF
5798                  * is no longer valid as we are not in the middle of FCF
5799                  * failover process already.
5800                  */
5801                 spin_lock_irq(&phba->hbalock);
5802                 /* Mark the fast failover process in progress */
5803                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
5804                 spin_unlock_irq(&phba->hbalock);
5805
5806                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5807                                 "2771 Start FCF fast failover process due to "
5808                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
5809                                 "\n", acqe_fip->event_tag, acqe_fip->index);
5810                 rc = lpfc_sli4_redisc_fcf_table(phba);
5811                 if (rc) {
5812                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5813                                         LOG_TRACE_EVENT,
5814                                         "2772 Issue FCF rediscover mailbox "
5815                                         "command failed, fail through to FCF "
5816                                         "dead event\n");
5817                         spin_lock_irq(&phba->hbalock);
5818                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
5819                         spin_unlock_irq(&phba->hbalock);
5820                         /*
5821                          * Last resort will fail over by treating this
5822                          * as a link down to FCF registration.
5823                          */
5824                         lpfc_sli4_fcf_dead_failthrough(phba);
5825                 } else {
5826                         /* Reset FCF roundrobin bmask for new discovery */
5827                         lpfc_sli4_clear_fcf_rr_bmask(phba);
5828                         /*
5829                          * Handling fast FCF failover to a DEAD FCF event is
5830                          * considered equalivant to receiving CVL to all vports.
5831                          */
5832                         lpfc_sli4_perform_all_vport_cvl(phba);
5833                 }
5834                 break;
5835         case LPFC_FIP_EVENT_TYPE_CVL:
5836                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5837                 lpfc_printf_log(phba, KERN_ERR,
5838                                 LOG_TRACE_EVENT,
5839                         "2718 Clear Virtual Link Received for VPI 0x%x"
5840                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
5841
5842                 vport = lpfc_find_vport_by_vpid(phba,
5843                                                 acqe_fip->index);
5844                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
5845                 if (!ndlp)
5846                         break;
5847                 active_vlink_present = 0;
5848
5849                 vports = lpfc_create_vport_work_array(phba);
5850                 if (vports) {
5851                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5852                                         i++) {
5853                                 if ((!(vports[i]->fc_flag &
5854                                         FC_VPORT_CVL_RCVD)) &&
5855                                         (vports[i]->port_state > LPFC_FDISC)) {
5856                                         active_vlink_present = 1;
5857                                         break;
5858                                 }
5859                         }
5860                         lpfc_destroy_vport_work_array(phba, vports);
5861                 }
5862
5863                 /*
5864                  * Don't re-instantiate if vport is marked for deletion.
5865                  * If we are here first then vport_delete is going to wait
5866                  * for discovery to complete.
5867                  */
5868                 if (!(vport->load_flag & FC_UNLOADING) &&
5869                                         active_vlink_present) {
5870                         /*
5871                          * If there are other active VLinks present,
5872                          * re-instantiate the Vlink using FDISC.
5873                          */
5874                         mod_timer(&ndlp->nlp_delayfunc,
5875                                   jiffies + msecs_to_jiffies(1000));
5876                         spin_lock_irq(&ndlp->lock);
5877                         ndlp->nlp_flag |= NLP_DELAY_TMO;
5878                         spin_unlock_irq(&ndlp->lock);
5879                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
5880                         vport->port_state = LPFC_FDISC;
5881                 } else {
5882                         /*
5883                          * Otherwise, we request port to rediscover
5884                          * the entire FCF table for a fast recovery
5885                          * from possible case that the current FCF
5886                          * is no longer valid if we are not already
5887                          * in the FCF failover process.
5888                          */
5889                         spin_lock_irq(&phba->hbalock);
5890                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5891                                 spin_unlock_irq(&phba->hbalock);
5892                                 break;
5893                         }
5894                         /* Mark the fast failover process in progress */
5895                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
5896                         spin_unlock_irq(&phba->hbalock);
5897                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5898                                         LOG_DISCOVERY,
5899                                         "2773 Start FCF failover per CVL, "
5900                                         "evt_tag:x%x\n", acqe_fip->event_tag);
5901                         rc = lpfc_sli4_redisc_fcf_table(phba);
5902                         if (rc) {
5903                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5904                                                 LOG_TRACE_EVENT,
5905                                                 "2774 Issue FCF rediscover "
5906                                                 "mailbox command failed, "
5907                                                 "through to CVL event\n");
5908                                 spin_lock_irq(&phba->hbalock);
5909                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
5910                                 spin_unlock_irq(&phba->hbalock);
5911                                 /*
5912                                  * Last resort will be re-try on the
5913                                  * the current registered FCF entry.
5914                                  */
5915                                 lpfc_retry_pport_discovery(phba);
5916                         } else
5917                                 /*
5918                                  * Reset FCF roundrobin bmask for new
5919                                  * discovery.
5920                                  */
5921                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
5922                 }
5923                 break;
5924         default:
5925                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5926                                 "0288 Unknown FCoE event type 0x%x event tag "
5927                                 "0x%x\n", event_type, acqe_fip->event_tag);
5928                 break;
5929         }
5930 }
5931
5932 /**
5933  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
5934  * @phba: pointer to lpfc hba data structure.
5935  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
5936  *
5937  * This routine is to handle the SLI4 asynchronous dcbx event.
5938  **/
5939 static void
5940 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
5941                          struct lpfc_acqe_dcbx *acqe_dcbx)
5942 {
5943         phba->fc_eventTag = acqe_dcbx->event_tag;
5944         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5945                         "0290 The SLI4 DCBX asynchronous event is not "
5946                         "handled yet\n");
5947 }
5948
5949 /**
5950  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
5951  * @phba: pointer to lpfc hba data structure.
5952  * @acqe_grp5: pointer to the async grp5 completion queue entry.
5953  *
5954  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
5955  * is an asynchronous notified of a logical link speed change.  The Port
5956  * reports the logical link speed in units of 10Mbps.
5957  **/
5958 static void
5959 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
5960                          struct lpfc_acqe_grp5 *acqe_grp5)
5961 {
5962         uint16_t prev_ll_spd;
5963
5964         phba->fc_eventTag = acqe_grp5->event_tag;
5965         phba->fcoe_eventtag = acqe_grp5->event_tag;
5966         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
5967         phba->sli4_hba.link_state.logical_speed =
5968                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
5969         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5970                         "2789 GRP5 Async Event: Updating logical link speed "
5971                         "from %dMbps to %dMbps\n", prev_ll_spd,
5972                         phba->sli4_hba.link_state.logical_speed);
5973 }
5974
5975 /**
5976  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
5977  * @phba: pointer to lpfc hba data structure.
5978  *
5979  * This routine is invoked by the worker thread to process all the pending
5980  * SLI4 asynchronous events.
5981  **/
5982 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
5983 {
5984         struct lpfc_cq_event *cq_event;
5985         unsigned long iflags;
5986
5987         /* First, declare the async event has been handled */
5988         spin_lock_irqsave(&phba->hbalock, iflags);
5989         phba->hba_flag &= ~ASYNC_EVENT;
5990         spin_unlock_irqrestore(&phba->hbalock, iflags);
5991
5992         /* Now, handle all the async events */
5993         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
5994         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
5995                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
5996                                  cq_event, struct lpfc_cq_event, list);
5997                 spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
5998                                        iflags);
5999
6000                 /* Process the asynchronous event */
6001                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
6002                 case LPFC_TRAILER_CODE_LINK:
6003                         lpfc_sli4_async_link_evt(phba,
6004                                                  &cq_event->cqe.acqe_link);
6005                         break;
6006                 case LPFC_TRAILER_CODE_FCOE:
6007                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
6008                         break;
6009                 case LPFC_TRAILER_CODE_DCBX:
6010                         lpfc_sli4_async_dcbx_evt(phba,
6011                                                  &cq_event->cqe.acqe_dcbx);
6012                         break;
6013                 case LPFC_TRAILER_CODE_GRP5:
6014                         lpfc_sli4_async_grp5_evt(phba,
6015                                                  &cq_event->cqe.acqe_grp5);
6016                         break;
6017                 case LPFC_TRAILER_CODE_FC:
6018                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
6019                         break;
6020                 case LPFC_TRAILER_CODE_SLI:
6021                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
6022                         break;
6023                 default:
6024                         lpfc_printf_log(phba, KERN_ERR,
6025                                         LOG_TRACE_EVENT,
6026                                         "1804 Invalid asynchronous event code: "
6027                                         "x%x\n", bf_get(lpfc_trailer_code,
6028                                         &cq_event->cqe.mcqe_cmpl));
6029                         break;
6030                 }
6031
6032                 /* Free the completion event processed to the free pool */
6033                 lpfc_sli4_cq_event_release(phba, cq_event);
6034                 spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
6035         }
6036         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
6037 }
6038
6039 /**
6040  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
6041  * @phba: pointer to lpfc hba data structure.
6042  *
6043  * This routine is invoked by the worker thread to process FCF table
6044  * rediscovery pending completion event.
6045  **/
6046 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
6047 {
6048         int rc;
6049
6050         spin_lock_irq(&phba->hbalock);
6051         /* Clear FCF rediscovery timeout event */
6052         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
6053         /* Clear driver fast failover FCF record flag */
6054         phba->fcf.failover_rec.flag = 0;
6055         /* Set state for FCF fast failover */
6056         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
6057         spin_unlock_irq(&phba->hbalock);
6058
6059         /* Scan FCF table from the first entry to re-discover SAN */
6060         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6061                         "2777 Start post-quiescent FCF table scan\n");
6062         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6063         if (rc)
6064                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6065                                 "2747 Issue FCF scan read FCF mailbox "
6066                                 "command failed 0x%x\n", rc);
6067 }
6068
6069 /**
6070  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
6071  * @phba: pointer to lpfc hba data structure.
6072  * @dev_grp: The HBA PCI-Device group number.
6073  *
6074  * This routine is invoked to set up the per HBA PCI-Device group function
6075  * API jump table entries.
6076  *
6077  * Return: 0 if success, otherwise -ENODEV
6078  **/
6079 int
6080 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
6081 {
6082         int rc;
6083
6084         /* Set up lpfc PCI-device group */
6085         phba->pci_dev_grp = dev_grp;
6086
6087         /* The LPFC_PCI_DEV_OC uses SLI4 */
6088         if (dev_grp == LPFC_PCI_DEV_OC)
6089                 phba->sli_rev = LPFC_SLI_REV4;
6090
6091         /* Set up device INIT API function jump table */
6092         rc = lpfc_init_api_table_setup(phba, dev_grp);
6093         if (rc)
6094                 return -ENODEV;
6095         /* Set up SCSI API function jump table */
6096         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
6097         if (rc)
6098                 return -ENODEV;
6099         /* Set up SLI API function jump table */
6100         rc = lpfc_sli_api_table_setup(phba, dev_grp);
6101         if (rc)
6102                 return -ENODEV;
6103         /* Set up MBOX API function jump table */
6104         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
6105         if (rc)
6106                 return -ENODEV;
6107
6108         return 0;
6109 }
6110
6111 /**
6112  * lpfc_log_intr_mode - Log the active interrupt mode
6113  * @phba: pointer to lpfc hba data structure.
6114  * @intr_mode: active interrupt mode adopted.
6115  *
6116  * This routine it invoked to log the currently used active interrupt mode
6117  * to the device.
6118  **/
6119 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
6120 {
6121         switch (intr_mode) {
6122         case 0:
6123                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6124                                 "0470 Enable INTx interrupt mode.\n");
6125                 break;
6126         case 1:
6127                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6128                                 "0481 Enabled MSI interrupt mode.\n");
6129                 break;
6130         case 2:
6131                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6132                                 "0480 Enabled MSI-X interrupt mode.\n");
6133                 break;
6134         default:
6135                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6136                                 "0482 Illegal interrupt mode.\n");
6137                 break;
6138         }
6139         return;
6140 }
6141
6142 /**
6143  * lpfc_enable_pci_dev - Enable a generic PCI device.
6144  * @phba: pointer to lpfc hba data structure.
6145  *
6146  * This routine is invoked to enable the PCI device that is common to all
6147  * PCI devices.
6148  *
6149  * Return codes
6150  *      0 - successful
6151  *      other values - error
6152  **/
6153 static int
6154 lpfc_enable_pci_dev(struct lpfc_hba *phba)
6155 {
6156         struct pci_dev *pdev;
6157
6158         /* Obtain PCI device reference */
6159         if (!phba->pcidev)
6160                 goto out_error;
6161         else
6162                 pdev = phba->pcidev;
6163         /* Enable PCI device */
6164         if (pci_enable_device_mem(pdev))
6165                 goto out_error;
6166         /* Request PCI resource for the device */
6167         if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
6168                 goto out_disable_device;
6169         /* Set up device as PCI master and save state for EEH */
6170         pci_set_master(pdev);
6171         pci_try_set_mwi(pdev);
6172         pci_save_state(pdev);
6173
6174         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
6175         if (pci_is_pcie(pdev))
6176                 pdev->needs_freset = 1;
6177
6178         return 0;
6179
6180 out_disable_device:
6181         pci_disable_device(pdev);
6182 out_error:
6183         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6184                         "1401 Failed to enable pci device\n");
6185         return -ENODEV;
6186 }
6187
6188 /**
6189  * lpfc_disable_pci_dev - Disable a generic PCI device.
6190  * @phba: pointer to lpfc hba data structure.
6191  *
6192  * This routine is invoked to disable the PCI device that is common to all
6193  * PCI devices.
6194  **/
6195 static void
6196 lpfc_disable_pci_dev(struct lpfc_hba *phba)
6197 {
6198         struct pci_dev *pdev;
6199
6200         /* Obtain PCI device reference */
6201         if (!phba->pcidev)
6202                 return;
6203         else
6204                 pdev = phba->pcidev;
6205         /* Release PCI resource and disable PCI device */
6206         pci_release_mem_regions(pdev);
6207         pci_disable_device(pdev);
6208
6209         return;
6210 }
6211
6212 /**
6213  * lpfc_reset_hba - Reset a hba
6214  * @phba: pointer to lpfc hba data structure.
6215  *
6216  * This routine is invoked to reset a hba device. It brings the HBA
6217  * offline, performs a board restart, and then brings the board back
6218  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
6219  * on outstanding mailbox commands.
6220  **/
6221 void
6222 lpfc_reset_hba(struct lpfc_hba *phba)
6223 {
6224         /* If resets are disabled then set error state and return. */
6225         if (!phba->cfg_enable_hba_reset) {
6226                 phba->link_state = LPFC_HBA_ERROR;
6227                 return;
6228         }
6229
6230         /* If not LPFC_SLI_ACTIVE, force all IO to be flushed */
6231         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {
6232                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
6233         } else {
6234                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
6235                 lpfc_sli_flush_io_rings(phba);
6236         }
6237         lpfc_offline(phba);
6238         lpfc_sli_brdrestart(phba);
6239         lpfc_online(phba);
6240         lpfc_unblock_mgmt_io(phba);
6241 }
6242
6243 /**
6244  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
6245  * @phba: pointer to lpfc hba data structure.
6246  *
6247  * This function enables the PCI SR-IOV virtual functions to a physical
6248  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6249  * enable the number of virtual functions to the physical function. As
6250  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6251  * API call does not considered as an error condition for most of the device.
6252  **/
6253 uint16_t
6254 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
6255 {
6256         struct pci_dev *pdev = phba->pcidev;
6257         uint16_t nr_virtfn;
6258         int pos;
6259
6260         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
6261         if (pos == 0)
6262                 return 0;
6263
6264         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
6265         return nr_virtfn;
6266 }
6267
6268 /**
6269  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
6270  * @phba: pointer to lpfc hba data structure.
6271  * @nr_vfn: number of virtual functions to be enabled.
6272  *
6273  * This function enables the PCI SR-IOV virtual functions to a physical
6274  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6275  * enable the number of virtual functions to the physical function. As
6276  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6277  * API call does not considered as an error condition for most of the device.
6278  **/
6279 int
6280 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
6281 {
6282         struct pci_dev *pdev = phba->pcidev;
6283         uint16_t max_nr_vfn;
6284         int rc;
6285
6286         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
6287         if (nr_vfn > max_nr_vfn) {
6288                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6289                                 "3057 Requested vfs (%d) greater than "
6290                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
6291                 return -EINVAL;
6292         }
6293
6294         rc = pci_enable_sriov(pdev, nr_vfn);
6295         if (rc) {
6296                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6297                                 "2806 Failed to enable sriov on this device "
6298                                 "with vfn number nr_vf:%d, rc:%d\n",
6299                                 nr_vfn, rc);
6300         } else
6301                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6302                                 "2807 Successful enable sriov on this device "
6303                                 "with vfn number nr_vf:%d\n", nr_vfn);
6304         return rc;
6305 }
6306
6307 /**
6308  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
6309  * @phba: pointer to lpfc hba data structure.
6310  *
6311  * This routine is invoked to set up the driver internal resources before the
6312  * device specific resource setup to support the HBA device it attached to.
6313  *
6314  * Return codes
6315  *      0 - successful
6316  *      other values - error
6317  **/
6318 static int
6319 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
6320 {
6321         struct lpfc_sli *psli = &phba->sli;
6322
6323         /*
6324          * Driver resources common to all SLI revisions
6325          */
6326         atomic_set(&phba->fast_event_count, 0);
6327         atomic_set(&phba->dbg_log_idx, 0);
6328         atomic_set(&phba->dbg_log_cnt, 0);
6329         atomic_set(&phba->dbg_log_dmping, 0);
6330         spin_lock_init(&phba->hbalock);
6331
6332         /* Initialize port_list spinlock */
6333         spin_lock_init(&phba->port_list_lock);
6334         INIT_LIST_HEAD(&phba->port_list);
6335
6336         INIT_LIST_HEAD(&phba->work_list);
6337         init_waitqueue_head(&phba->wait_4_mlo_m_q);
6338
6339         /* Initialize the wait queue head for the kernel thread */
6340         init_waitqueue_head(&phba->work_waitq);
6341
6342         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6343                         "1403 Protocols supported %s %s %s\n",
6344                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
6345                                 "SCSI" : " "),
6346                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
6347                                 "NVME" : " "),
6348                         (phba->nvmet_support ? "NVMET" : " "));
6349
6350         /* Initialize the IO buffer list used by driver for SLI3 SCSI */
6351         spin_lock_init(&phba->scsi_buf_list_get_lock);
6352         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
6353         spin_lock_init(&phba->scsi_buf_list_put_lock);
6354         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
6355
6356         /* Initialize the fabric iocb list */
6357         INIT_LIST_HEAD(&phba->fabric_iocb_list);
6358
6359         /* Initialize list to save ELS buffers */
6360         INIT_LIST_HEAD(&phba->elsbuf);
6361
6362         /* Initialize FCF connection rec list */
6363         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
6364
6365         /* Initialize OAS configuration list */
6366         spin_lock_init(&phba->devicelock);
6367         INIT_LIST_HEAD(&phba->luns);
6368
6369         /* MBOX heartbeat timer */
6370         timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
6371         /* Fabric block timer */
6372         timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
6373         /* EA polling mode timer */
6374         timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
6375         /* Heartbeat timer */
6376         timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
6377
6378         INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
6379
6380         INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
6381                           lpfc_idle_stat_delay_work);
6382
6383         return 0;
6384 }
6385
6386 /**
6387  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
6388  * @phba: pointer to lpfc hba data structure.
6389  *
6390  * This routine is invoked to set up the driver internal resources specific to
6391  * support the SLI-3 HBA device it attached to.
6392  *
6393  * Return codes
6394  * 0 - successful
6395  * other values - error
6396  **/
6397 static int
6398 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
6399 {
6400         int rc, entry_sz;
6401
6402         /*
6403          * Initialize timers used by driver
6404          */
6405
6406         /* FCP polling mode timer */
6407         timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
6408
6409         /* Host attention work mask setup */
6410         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
6411         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
6412
6413         /* Get all the module params for configuring this host */
6414         lpfc_get_cfgparam(phba);
6415         /* Set up phase-1 common device driver resources */
6416
6417         rc = lpfc_setup_driver_resource_phase1(phba);
6418         if (rc)
6419                 return -ENODEV;
6420
6421         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
6422                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
6423                 /* check for menlo minimum sg count */
6424                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
6425                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
6426         }
6427
6428         if (!phba->sli.sli3_ring)
6429                 phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
6430                                               sizeof(struct lpfc_sli_ring),
6431                                               GFP_KERNEL);
6432         if (!phba->sli.sli3_ring)
6433                 return -ENOMEM;
6434
6435         /*
6436          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
6437          * used to create the sg_dma_buf_pool must be dynamically calculated.
6438          */
6439
6440         if (phba->sli_rev == LPFC_SLI_REV4)
6441                 entry_sz = sizeof(struct sli4_sge);
6442         else
6443                 entry_sz = sizeof(struct ulp_bde64);
6444
6445         /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
6446         if (phba->cfg_enable_bg) {
6447                 /*
6448                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
6449                  * the FCP rsp, and a BDE for each. Sice we have no control
6450                  * over how many protection data segments the SCSI Layer
6451                  * will hand us (ie: there could be one for every block
6452                  * in the IO), we just allocate enough BDEs to accomidate
6453                  * our max amount and we need to limit lpfc_sg_seg_cnt to
6454                  * minimize the risk of running out.
6455                  */
6456                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6457                         sizeof(struct fcp_rsp) +
6458                         (LPFC_MAX_SG_SEG_CNT * entry_sz);
6459
6460                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
6461                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
6462
6463                 /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
6464                 phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
6465         } else {
6466                 /*
6467                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
6468                  * the FCP rsp, a BDE for each, and a BDE for up to
6469                  * cfg_sg_seg_cnt data segments.
6470                  */
6471                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6472                         sizeof(struct fcp_rsp) +
6473                         ((phba->cfg_sg_seg_cnt + 2) * entry_sz);
6474
6475                 /* Total BDEs in BPL for scsi_sg_list */
6476                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
6477         }
6478
6479         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6480                         "9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
6481                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6482                         phba->cfg_total_seg_cnt);
6483
6484         phba->max_vpi = LPFC_MAX_VPI;
6485         /* This will be set to correct value after config_port mbox */
6486         phba->max_vports = 0;
6487
6488         /*
6489          * Initialize the SLI Layer to run with lpfc HBAs.
6490          */
6491         lpfc_sli_setup(phba);
6492         lpfc_sli_queue_init(phba);
6493
6494         /* Allocate device driver memory */
6495         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
6496                 return -ENOMEM;
6497
6498         phba->lpfc_sg_dma_buf_pool =
6499                 dma_pool_create("lpfc_sg_dma_buf_pool",
6500                                 &phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
6501                                 BPL_ALIGN_SZ, 0);
6502
6503         if (!phba->lpfc_sg_dma_buf_pool)
6504                 goto fail_free_mem;
6505
6506         phba->lpfc_cmd_rsp_buf_pool =
6507                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
6508                                         &phba->pcidev->dev,
6509                                         sizeof(struct fcp_cmnd) +
6510                                         sizeof(struct fcp_rsp),
6511                                         BPL_ALIGN_SZ, 0);
6512
6513         if (!phba->lpfc_cmd_rsp_buf_pool)
6514                 goto fail_free_dma_buf_pool;
6515
6516         /*
6517          * Enable sr-iov virtual functions if supported and configured
6518          * through the module parameter.
6519          */
6520         if (phba->cfg_sriov_nr_virtfn > 0) {
6521                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
6522                                                  phba->cfg_sriov_nr_virtfn);
6523                 if (rc) {
6524                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6525                                         "2808 Requested number of SR-IOV "
6526                                         "virtual functions (%d) is not "
6527                                         "supported\n",
6528                                         phba->cfg_sriov_nr_virtfn);
6529                         phba->cfg_sriov_nr_virtfn = 0;
6530                 }
6531         }
6532
6533         return 0;
6534
6535 fail_free_dma_buf_pool:
6536         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
6537         phba->lpfc_sg_dma_buf_pool = NULL;
6538 fail_free_mem:
6539         lpfc_mem_free(phba);
6540         return -ENOMEM;
6541 }
6542
6543 /**
6544  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
6545  * @phba: pointer to lpfc hba data structure.
6546  *
6547  * This routine is invoked to unset the driver internal resources set up
6548  * specific for supporting the SLI-3 HBA device it attached to.
6549  **/
6550 static void
6551 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
6552 {
6553         /* Free device driver memory allocated */
6554         lpfc_mem_free_all(phba);
6555
6556         return;
6557 }
6558
6559 /**
6560  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
6561  * @phba: pointer to lpfc hba data structure.
6562  *
6563  * This routine is invoked to set up the driver internal resources specific to
6564  * support the SLI-4 HBA device it attached to.
6565  *
6566  * Return codes
6567  *      0 - successful
6568  *      other values - error
6569  **/
6570 static int
6571 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
6572 {
6573         LPFC_MBOXQ_t *mboxq;
6574         MAILBOX_t *mb;
6575         int rc, i, max_buf_size;
6576         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
6577         struct lpfc_mqe *mqe;
6578         int longs;
6579         int extra;
6580         uint64_t wwn;
6581         u32 if_type;
6582         u32 if_fam;
6583
6584         phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
6585         phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
6586         phba->sli4_hba.curr_disp_cpu = 0;
6587
6588         /* Get all the module params for configuring this host */
6589         lpfc_get_cfgparam(phba);
6590
6591         /* Set up phase-1 common device driver resources */
6592         rc = lpfc_setup_driver_resource_phase1(phba);
6593         if (rc)
6594                 return -ENODEV;
6595
6596         /* Before proceed, wait for POST done and device ready */
6597         rc = lpfc_sli4_post_status_check(phba);
6598         if (rc)
6599                 return -ENODEV;
6600
6601         /* Allocate all driver workqueues here */
6602
6603         /* The lpfc_wq workqueue for deferred irq use */
6604         phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
6605
6606         /*
6607          * Initialize timers used by driver
6608          */
6609
6610         timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
6611
6612         /* FCF rediscover timer */
6613         timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
6614
6615         /*
6616          * Control structure for handling external multi-buffer mailbox
6617          * command pass-through.
6618          */
6619         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
6620                 sizeof(struct lpfc_mbox_ext_buf_ctx));
6621         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
6622
6623         phba->max_vpi = LPFC_MAX_VPI;
6624
6625         /* This will be set to correct value after the read_config mbox */
6626         phba->max_vports = 0;
6627
6628         /* Program the default value of vlan_id and fc_map */
6629         phba->valid_vlan = 0;
6630         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
6631         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
6632         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
6633
6634         /*
6635          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
6636          * we will associate a new ring, for each EQ/CQ/WQ tuple.
6637          * The WQ create will allocate the ring.
6638          */
6639
6640         /* Initialize buffer queue management fields */
6641         INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
6642         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
6643         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
6644
6645         /*
6646          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
6647          */
6648         /* Initialize the Abort buffer list used by driver */
6649         spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
6650         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
6651
6652         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6653                 /* Initialize the Abort nvme buffer list used by driver */
6654                 spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
6655                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
6656                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
6657                 spin_lock_init(&phba->sli4_hba.t_active_list_lock);
6658                 INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
6659         }
6660
6661         /* This abort list used by worker thread */
6662         spin_lock_init(&phba->sli4_hba.sgl_list_lock);
6663         spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
6664         spin_lock_init(&phba->sli4_hba.asynce_list_lock);
6665         spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);
6666
6667         /*
6668          * Initialize driver internal slow-path work queues
6669          */
6670
6671         /* Driver internel slow-path CQ Event pool */
6672         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
6673         /* Response IOCB work queue list */
6674         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
6675         /* Asynchronous event CQ Event work queue list */
6676         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
6677         /* Slow-path XRI aborted CQ Event work queue list */
6678         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
6679         /* Receive queue CQ Event work queue list */
6680         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
6681
6682         /* Initialize extent block lists. */
6683         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
6684         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
6685         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
6686         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
6687
6688         /* Initialize mboxq lists. If the early init routines fail
6689          * these lists need to be correctly initialized.
6690          */
6691         INIT_LIST_HEAD(&phba->sli.mboxq);
6692         INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
6693
6694         /* initialize optic_state to 0xFF */
6695         phba->sli4_hba.lnk_info.optic_state = 0xff;
6696
6697         /* Allocate device driver memory */
6698         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
6699         if (rc)
6700                 return -ENOMEM;
6701
6702         /* IF Type 2 ports get initialized now. */
6703         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
6704             LPFC_SLI_INTF_IF_TYPE_2) {
6705                 rc = lpfc_pci_function_reset(phba);
6706                 if (unlikely(rc)) {
6707                         rc = -ENODEV;
6708                         goto out_free_mem;
6709                 }
6710                 phba->temp_sensor_support = 1;
6711         }
6712
6713         /* Create the bootstrap mailbox command */
6714         rc = lpfc_create_bootstrap_mbox(phba);
6715         if (unlikely(rc))
6716                 goto out_free_mem;
6717
6718         /* Set up the host's endian order with the device. */
6719         rc = lpfc_setup_endian_order(phba);
6720         if (unlikely(rc))
6721                 goto out_free_bsmbx;
6722
6723         /* Set up the hba's configuration parameters. */
6724         rc = lpfc_sli4_read_config(phba);
6725         if (unlikely(rc))
6726                 goto out_free_bsmbx;
6727         rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
6728         if (unlikely(rc))
6729                 goto out_free_bsmbx;
6730
6731         /* IF Type 0 ports get initialized now. */
6732         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
6733             LPFC_SLI_INTF_IF_TYPE_0) {
6734                 rc = lpfc_pci_function_reset(phba);
6735                 if (unlikely(rc))
6736                         goto out_free_bsmbx;
6737         }
6738
6739         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6740                                                        GFP_KERNEL);
6741         if (!mboxq) {
6742                 rc = -ENOMEM;
6743                 goto out_free_bsmbx;
6744         }
6745
6746         /* Check for NVMET being configured */
6747         phba->nvmet_support = 0;
6748         if (lpfc_enable_nvmet_cnt) {
6749
6750                 /* First get WWN of HBA instance */
6751                 lpfc_read_nv(phba, mboxq);
6752                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6753                 if (rc != MBX_SUCCESS) {
6754                         lpfc_printf_log(phba, KERN_ERR,
6755                                         LOG_TRACE_EVENT,
6756                                         "6016 Mailbox failed , mbxCmd x%x "
6757                                         "READ_NV, mbxStatus x%x\n",
6758                                         bf_get(lpfc_mqe_command, &mboxq->u.mqe),
6759                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe));
6760                         mempool_free(mboxq, phba->mbox_mem_pool);
6761                         rc = -EIO;
6762                         goto out_free_bsmbx;
6763                 }
6764                 mb = &mboxq->u.mb;
6765                 memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
6766                        sizeof(uint64_t));
6767                 wwn = cpu_to_be64(wwn);
6768                 phba->sli4_hba.wwnn.u.name = wwn;
6769                 memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
6770                        sizeof(uint64_t));
6771                 /* wwn is WWPN of HBA instance */
6772                 wwn = cpu_to_be64(wwn);
6773                 phba->sli4_hba.wwpn.u.name = wwn;
6774
6775                 /* Check to see if it matches any module parameter */
6776                 for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
6777                         if (wwn == lpfc_enable_nvmet[i]) {
6778 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
6779                                 if (lpfc_nvmet_mem_alloc(phba))
6780                                         break;
6781
6782                                 phba->nvmet_support = 1; /* a match */
6783
6784                                 lpfc_printf_log(phba, KERN_ERR,
6785                                                 LOG_TRACE_EVENT,
6786                                                 "6017 NVME Target %016llx\n",
6787                                                 wwn);
6788 #else
6789                                 lpfc_printf_log(phba, KERN_ERR,
6790                                                 LOG_TRACE_EVENT,
6791                                                 "6021 Can't enable NVME Target."
6792                                                 " NVME_TARGET_FC infrastructure"
6793                                                 " is not in kernel\n");
6794 #endif
6795                                 /* Not supported for NVMET */
6796                                 phba->cfg_xri_rebalancing = 0;
6797                                 if (phba->irq_chann_mode == NHT_MODE) {
6798                                         phba->cfg_irq_chann =
6799                                                 phba->sli4_hba.num_present_cpu;
6800                                         phba->cfg_hdw_queue =
6801                                                 phba->sli4_hba.num_present_cpu;
6802                                         phba->irq_chann_mode = NORMAL_MODE;
6803                                 }
6804                                 break;
6805                         }
6806                 }
6807         }
6808
6809         lpfc_nvme_mod_param_dep(phba);
6810
6811         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
6812         lpfc_supported_pages(mboxq);
6813         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6814         if (!rc) {
6815                 mqe = &mboxq->u.mqe;
6816                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
6817                        LPFC_MAX_SUPPORTED_PAGES);
6818                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
6819                         switch (pn_page[i]) {
6820                         case LPFC_SLI4_PARAMETERS:
6821                                 phba->sli4_hba.pc_sli4_params.supported = 1;
6822                                 break;
6823                         default:
6824                                 break;
6825                         }
6826                 }
6827                 /* Read the port's SLI4 Parameters capabilities if supported. */
6828                 if (phba->sli4_hba.pc_sli4_params.supported)
6829                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
6830                 if (rc) {
6831                         mempool_free(mboxq, phba->mbox_mem_pool);
6832                         rc = -EIO;
6833                         goto out_free_bsmbx;
6834                 }
6835         }
6836
6837         /*
6838          * Get sli4 parameters that override parameters from Port capabilities.
6839          * If this call fails, it isn't critical unless the SLI4 parameters come
6840          * back in conflict.
6841          */
6842         rc = lpfc_get_sli4_parameters(phba, mboxq);
6843         if (rc) {
6844                 if_type = bf_get(lpfc_sli_intf_if_type,
6845                                  &phba->sli4_hba.sli_intf);
6846                 if_fam = bf_get(lpfc_sli_intf_sli_family,
6847                                 &phba->sli4_hba.sli_intf);
6848                 if (phba->sli4_hba.extents_in_use &&
6849                     phba->sli4_hba.rpi_hdrs_in_use) {
6850                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6851                                         "2999 Unsupported SLI4 Parameters "
6852                                         "Extents and RPI headers enabled.\n");
6853                         if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6854                             if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
6855                                 mempool_free(mboxq, phba->mbox_mem_pool);
6856                                 rc = -EIO;
6857                                 goto out_free_bsmbx;
6858                         }
6859                 }
6860                 if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6861                       if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
6862                         mempool_free(mboxq, phba->mbox_mem_pool);
6863                         rc = -EIO;
6864                         goto out_free_bsmbx;
6865                 }
6866         }
6867
6868         /*
6869          * 1 for cmd, 1 for rsp, NVME adds an extra one
6870          * for boundary conditions in its max_sgl_segment template.
6871          */
6872         extra = 2;
6873         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
6874                 extra++;
6875
6876         /*
6877          * It doesn't matter what family our adapter is in, we are
6878          * limited to 2 Pages, 512 SGEs, for our SGL.
6879          * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
6880          */
6881         max_buf_size = (2 * SLI4_PAGE_SIZE);
6882
6883         /*
6884          * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
6885          * used to create the sg_dma_buf_pool must be calculated.
6886          */
6887         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
6888                 /* Both cfg_enable_bg and cfg_external_dif code paths */
6889
6890                 /*
6891                  * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
6892                  * the FCP rsp, and a SGE. Sice we have no control
6893                  * over how many protection segments the SCSI Layer
6894                  * will hand us (ie: there could be one for every block
6895                  * in the IO), just allocate enough SGEs to accomidate
6896                  * our max amount and we need to limit lpfc_sg_seg_cnt
6897                  * to minimize the risk of running out.
6898                  */
6899                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6900                                 sizeof(struct fcp_rsp) + max_buf_size;
6901
6902                 /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
6903                 phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
6904
6905                 /*
6906                  * If supporting DIF, reduce the seg count for scsi to
6907                  * allow room for the DIF sges.
6908                  */
6909                 if (phba->cfg_enable_bg &&
6910                     phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
6911                         phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
6912                 else
6913                         phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6914
6915         } else {
6916                 /*
6917                  * The scsi_buf for a regular I/O holds the FCP cmnd,
6918                  * the FCP rsp, a SGE for each, and a SGE for up to
6919                  * cfg_sg_seg_cnt data segments.
6920                  */
6921                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6922                                 sizeof(struct fcp_rsp) +
6923                                 ((phba->cfg_sg_seg_cnt + extra) *
6924                                 sizeof(struct sli4_sge));
6925
6926                 /* Total SGEs for scsi_sg_list */
6927                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
6928                 phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6929
6930                 /*
6931                  * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
6932                  * need to post 1 page for the SGL.
6933                  */
6934         }
6935
6936         if (phba->cfg_xpsgl && !phba->nvmet_support)
6937                 phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
6938         else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
6939                 phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
6940         else
6941                 phba->cfg_sg_dma_buf_size =
6942                                 SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
6943
6944         phba->border_sge_num = phba->cfg_sg_dma_buf_size /
6945                                sizeof(struct sli4_sge);
6946
6947         /* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
6948         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6949                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
6950                         lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
6951                                         "6300 Reducing NVME sg segment "
6952                                         "cnt to %d\n",
6953                                         LPFC_MAX_NVME_SEG_CNT);
6954                         phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
6955                 } else
6956                         phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
6957         }
6958
6959         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6960                         "9087 sg_seg_cnt:%d dmabuf_size:%d "
6961                         "total:%d scsi:%d nvme:%d\n",
6962                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6963                         phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
6964                         phba->cfg_nvme_seg_cnt);
6965
6966         if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
6967                 i = phba->cfg_sg_dma_buf_size;
6968         else
6969                 i = SLI4_PAGE_SIZE;
6970
6971         phba->lpfc_sg_dma_buf_pool =
6972                         dma_pool_create("lpfc_sg_dma_buf_pool",
6973                                         &phba->pcidev->dev,
6974                                         phba->cfg_sg_dma_buf_size,
6975                                         i, 0);
6976         if (!phba->lpfc_sg_dma_buf_pool)
6977                 goto out_free_bsmbx;
6978
6979         phba->lpfc_cmd_rsp_buf_pool =
6980                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
6981                                         &phba->pcidev->dev,
6982                                         sizeof(struct fcp_cmnd) +
6983                                         sizeof(struct fcp_rsp),
6984                                         i, 0);
6985         if (!phba->lpfc_cmd_rsp_buf_pool)
6986                 goto out_free_sg_dma_buf;
6987
6988         mempool_free(mboxq, phba->mbox_mem_pool);
6989
6990         /* Verify OAS is supported */
6991         lpfc_sli4_oas_verify(phba);
6992
6993         /* Verify RAS support on adapter */
6994         lpfc_sli4_ras_init(phba);
6995
6996         /* Verify all the SLI4 queues */
6997         rc = lpfc_sli4_queue_verify(phba);
6998         if (rc)
6999                 goto out_free_cmd_rsp_buf;
7000
7001         /* Create driver internal CQE event pool */
7002         rc = lpfc_sli4_cq_event_pool_create(phba);
7003         if (rc)
7004                 goto out_free_cmd_rsp_buf;
7005
7006         /* Initialize sgl lists per host */
7007         lpfc_init_sgl_list(phba);
7008
7009         /* Allocate and initialize active sgl array */
7010         rc = lpfc_init_active_sgl_array(phba);
7011         if (rc) {
7012                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7013                                 "1430 Failed to initialize sgl list.\n");
7014                 goto out_destroy_cq_event_pool;
7015         }
7016         rc = lpfc_sli4_init_rpi_hdrs(phba);
7017         if (rc) {
7018                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7019                                 "1432 Failed to initialize rpi headers.\n");
7020                 goto out_free_active_sgl;
7021         }
7022
7023         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
7024         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
7025         phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
7026                                          GFP_KERNEL);
7027         if (!phba->fcf.fcf_rr_bmask) {
7028                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7029                                 "2759 Failed allocate memory for FCF round "
7030                                 "robin failover bmask\n");
7031                 rc = -ENOMEM;
7032                 goto out_remove_rpi_hdrs;
7033         }
7034
7035         phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
7036                                             sizeof(struct lpfc_hba_eq_hdl),
7037                                             GFP_KERNEL);
7038         if (!phba->sli4_hba.hba_eq_hdl) {
7039                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7040                                 "2572 Failed allocate memory for "
7041                                 "fast-path per-EQ handle array\n");
7042                 rc = -ENOMEM;
7043                 goto out_free_fcf_rr_bmask;
7044         }
7045
7046         phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
7047                                         sizeof(struct lpfc_vector_map_info),
7048                                         GFP_KERNEL);
7049         if (!phba->sli4_hba.cpu_map) {
7050                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7051                                 "3327 Failed allocate memory for msi-x "
7052                                 "interrupt vector mapping\n");
7053                 rc = -ENOMEM;
7054                 goto out_free_hba_eq_hdl;
7055         }
7056
7057         phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
7058         if (!phba->sli4_hba.eq_info) {
7059                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7060                                 "3321 Failed allocation for per_cpu stats\n");
7061                 rc = -ENOMEM;
7062                 goto out_free_hba_cpu_map;
7063         }
7064
7065         phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
7066                                            sizeof(*phba->sli4_hba.idle_stat),
7067                                            GFP_KERNEL);
7068         if (!phba->sli4_hba.idle_stat) {
7069                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7070                                 "3390 Failed allocation for idle_stat\n");
7071                 rc = -ENOMEM;
7072                 goto out_free_hba_eq_info;
7073         }
7074
7075 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7076         phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
7077         if (!phba->sli4_hba.c_stat) {
7078                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7079                                 "3332 Failed allocating per cpu hdwq stats\n");
7080                 rc = -ENOMEM;
7081                 goto out_free_hba_idle_stat;
7082         }
7083 #endif
7084
7085         /*
7086          * Enable sr-iov virtual functions if supported and configured
7087          * through the module parameter.
7088          */
7089         if (phba->cfg_sriov_nr_virtfn > 0) {
7090                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
7091                                                  phba->cfg_sriov_nr_virtfn);
7092                 if (rc) {
7093                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7094                                         "3020 Requested number of SR-IOV "
7095                                         "virtual functions (%d) is not "
7096                                         "supported\n",
7097                                         phba->cfg_sriov_nr_virtfn);
7098                         phba->cfg_sriov_nr_virtfn = 0;
7099                 }
7100         }
7101
7102         return 0;
7103
7104 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7105 out_free_hba_idle_stat:
7106         kfree(phba->sli4_hba.idle_stat);
7107 #endif
7108 out_free_hba_eq_info:
7109         free_percpu(phba->sli4_hba.eq_info);
7110 out_free_hba_cpu_map:
7111         kfree(phba->sli4_hba.cpu_map);
7112 out_free_hba_eq_hdl:
7113         kfree(phba->sli4_hba.hba_eq_hdl);
7114 out_free_fcf_rr_bmask:
7115         kfree(phba->fcf.fcf_rr_bmask);
7116 out_remove_rpi_hdrs:
7117         lpfc_sli4_remove_rpi_hdrs(phba);
7118 out_free_active_sgl:
7119         lpfc_free_active_sgl(phba);
7120 out_destroy_cq_event_pool:
7121         lpfc_sli4_cq_event_pool_destroy(phba);
7122 out_free_cmd_rsp_buf:
7123         dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
7124         phba->lpfc_cmd_rsp_buf_pool = NULL;
7125 out_free_sg_dma_buf:
7126         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
7127         phba->lpfc_sg_dma_buf_pool = NULL;
7128 out_free_bsmbx:
7129         lpfc_destroy_bootstrap_mbox(phba);
7130 out_free_mem:
7131         lpfc_mem_free(phba);
7132         return rc;
7133 }
7134
7135 /**
7136  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
7137  * @phba: pointer to lpfc hba data structure.
7138  *
7139  * This routine is invoked to unset the driver internal resources set up
7140  * specific for supporting the SLI-4 HBA device it attached to.
7141  **/
7142 static void
7143 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
7144 {
7145         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7146
7147         free_percpu(phba->sli4_hba.eq_info);
7148 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7149         free_percpu(phba->sli4_hba.c_stat);
7150 #endif
7151         kfree(phba->sli4_hba.idle_stat);
7152
7153         /* Free memory allocated for msi-x interrupt vector to CPU mapping */
7154         kfree(phba->sli4_hba.cpu_map);
7155         phba->sli4_hba.num_possible_cpu = 0;
7156         phba->sli4_hba.num_present_cpu = 0;
7157         phba->sli4_hba.curr_disp_cpu = 0;
7158         cpumask_clear(&phba->sli4_hba.irq_aff_mask);
7159
7160         /* Free memory allocated for fast-path work queue handles */
7161         kfree(phba->sli4_hba.hba_eq_hdl);
7162
7163         /* Free the allocated rpi headers. */
7164         lpfc_sli4_remove_rpi_hdrs(phba);
7165         lpfc_sli4_remove_rpis(phba);
7166
7167         /* Free eligible FCF index bmask */
7168         kfree(phba->fcf.fcf_rr_bmask);
7169
7170         /* Free the ELS sgl list */
7171         lpfc_free_active_sgl(phba);
7172         lpfc_free_els_sgl_list(phba);
7173         lpfc_free_nvmet_sgl_list(phba);
7174
7175         /* Free the completion queue EQ event pool */
7176         lpfc_sli4_cq_event_release_all(phba);
7177         lpfc_sli4_cq_event_pool_destroy(phba);
7178
7179         /* Release resource identifiers. */
7180         lpfc_sli4_dealloc_resource_identifiers(phba);
7181
7182         /* Free the bsmbx region. */
7183         lpfc_destroy_bootstrap_mbox(phba);
7184
7185         /* Free the SLI Layer memory with SLI4 HBAs */
7186         lpfc_mem_free_all(phba);
7187
7188         /* Free the current connect table */
7189         list_for_each_entry_safe(conn_entry, next_conn_entry,
7190                 &phba->fcf_conn_rec_list, list) {
7191                 list_del_init(&conn_entry->list);
7192                 kfree(conn_entry);
7193         }
7194
7195         return;
7196 }
7197
7198 /**
7199  * lpfc_init_api_table_setup - Set up init api function jump table
7200  * @phba: The hba struct for which this call is being executed.
7201  * @dev_grp: The HBA PCI-Device group number.
7202  *
7203  * This routine sets up the device INIT interface API function jump table
7204  * in @phba struct.
7205  *
7206  * Returns: 0 - success, -ENODEV - failure.
7207  **/
7208 int
7209 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7210 {
7211         phba->lpfc_hba_init_link = lpfc_hba_init_link;
7212         phba->lpfc_hba_down_link = lpfc_hba_down_link;
7213         phba->lpfc_selective_reset = lpfc_selective_reset;
7214         switch (dev_grp) {
7215         case LPFC_PCI_DEV_LP:
7216                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
7217                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
7218                 phba->lpfc_stop_port = lpfc_stop_port_s3;
7219                 break;
7220         case LPFC_PCI_DEV_OC:
7221                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
7222                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
7223                 phba->lpfc_stop_port = lpfc_stop_port_s4;
7224                 break;
7225         default:
7226                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7227                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
7228                                 dev_grp);
7229                 return -ENODEV;
7230         }
7231         return 0;
7232 }
7233
7234 /**
7235  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
7236  * @phba: pointer to lpfc hba data structure.
7237  *
7238  * This routine is invoked to set up the driver internal resources after the
7239  * device specific resource setup to support the HBA device it attached to.
7240  *
7241  * Return codes
7242  *      0 - successful
7243  *      other values - error
7244  **/
7245 static int
7246 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
7247 {
7248         int error;
7249
7250         /* Startup the kernel thread for this host adapter. */
7251         phba->worker_thread = kthread_run(lpfc_do_work, phba,
7252                                           "lpfc_worker_%d", phba->brd_no);
7253         if (IS_ERR(phba->worker_thread)) {
7254                 error = PTR_ERR(phba->worker_thread);
7255                 return error;
7256         }
7257
7258         return 0;
7259 }
7260
7261 /**
7262  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
7263  * @phba: pointer to lpfc hba data structure.
7264  *
7265  * This routine is invoked to unset the driver internal resources set up after
7266  * the device specific resource setup for supporting the HBA device it
7267  * attached to.
7268  **/
7269 static void
7270 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
7271 {
7272         if (phba->wq) {
7273                 flush_workqueue(phba->wq);
7274                 destroy_workqueue(phba->wq);
7275                 phba->wq = NULL;
7276         }
7277
7278         /* Stop kernel worker thread */
7279         if (phba->worker_thread)
7280                 kthread_stop(phba->worker_thread);
7281 }
7282
7283 /**
7284  * lpfc_free_iocb_list - Free iocb list.
7285  * @phba: pointer to lpfc hba data structure.
7286  *
7287  * This routine is invoked to free the driver's IOCB list and memory.
7288  **/
7289 void
7290 lpfc_free_iocb_list(struct lpfc_hba *phba)
7291 {
7292         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
7293
7294         spin_lock_irq(&phba->hbalock);
7295         list_for_each_entry_safe(iocbq_entry, iocbq_next,
7296                                  &phba->lpfc_iocb_list, list) {
7297                 list_del(&iocbq_entry->list);
7298                 kfree(iocbq_entry);
7299                 phba->total_iocbq_bufs--;
7300         }
7301         spin_unlock_irq(&phba->hbalock);
7302
7303         return;
7304 }
7305
7306 /**
7307  * lpfc_init_iocb_list - Allocate and initialize iocb list.
7308  * @phba: pointer to lpfc hba data structure.
7309  * @iocb_count: number of requested iocbs
7310  *
7311  * This routine is invoked to allocate and initizlize the driver's IOCB
7312  * list and set up the IOCB tag array accordingly.
7313  *
7314  * Return codes
7315  *      0 - successful
7316  *      other values - error
7317  **/
7318 int
7319 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
7320 {
7321         struct lpfc_iocbq *iocbq_entry = NULL;
7322         uint16_t iotag;
7323         int i;
7324
7325         /* Initialize and populate the iocb list per host.  */
7326         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
7327         for (i = 0; i < iocb_count; i++) {
7328                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
7329                 if (iocbq_entry == NULL) {
7330                         printk(KERN_ERR "%s: only allocated %d iocbs of "
7331                                 "expected %d count. Unloading driver.\n",
7332                                 __func__, i, iocb_count);
7333                         goto out_free_iocbq;
7334                 }
7335
7336                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
7337                 if (iotag == 0) {
7338                         kfree(iocbq_entry);
7339                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
7340                                 "Unloading driver.\n", __func__);
7341                         goto out_free_iocbq;
7342                 }
7343                 iocbq_entry->sli4_lxritag = NO_XRI;
7344                 iocbq_entry->sli4_xritag = NO_XRI;
7345
7346                 spin_lock_irq(&phba->hbalock);
7347                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
7348                 phba->total_iocbq_bufs++;
7349                 spin_unlock_irq(&phba->hbalock);
7350         }
7351
7352         return 0;
7353
7354 out_free_iocbq:
7355         lpfc_free_iocb_list(phba);
7356
7357         return -ENOMEM;
7358 }
7359
7360 /**
7361  * lpfc_free_sgl_list - Free a given sgl list.
7362  * @phba: pointer to lpfc hba data structure.
7363  * @sglq_list: pointer to the head of sgl list.
7364  *
7365  * This routine is invoked to free a give sgl list and memory.
7366  **/
7367 void
7368 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
7369 {
7370         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7371
7372         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
7373                 list_del(&sglq_entry->list);
7374                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
7375                 kfree(sglq_entry);
7376         }
7377 }
7378
7379 /**
7380  * lpfc_free_els_sgl_list - Free els sgl list.
7381  * @phba: pointer to lpfc hba data structure.
7382  *
7383  * This routine is invoked to free the driver's els sgl list and memory.
7384  **/
7385 static void
7386 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
7387 {
7388         LIST_HEAD(sglq_list);
7389
7390         /* Retrieve all els sgls from driver list */
7391         spin_lock_irq(&phba->hbalock);
7392         spin_lock(&phba->sli4_hba.sgl_list_lock);
7393         list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
7394         spin_unlock(&phba->sli4_hba.sgl_list_lock);
7395         spin_unlock_irq(&phba->hbalock);
7396
7397         /* Now free the sgl list */
7398         lpfc_free_sgl_list(phba, &sglq_list);
7399 }
7400
7401 /**
7402  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
7403  * @phba: pointer to lpfc hba data structure.
7404  *
7405  * This routine is invoked to free the driver's nvmet sgl list and memory.
7406  **/
7407 static void
7408 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
7409 {
7410         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7411         LIST_HEAD(sglq_list);
7412
7413         /* Retrieve all nvmet sgls from driver list */
7414         spin_lock_irq(&phba->hbalock);
7415         spin_lock(&phba->sli4_hba.sgl_list_lock);
7416         list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
7417         spin_unlock(&phba->sli4_hba.sgl_list_lock);
7418         spin_unlock_irq(&phba->hbalock);
7419
7420         /* Now free the sgl list */
7421         list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
7422                 list_del(&sglq_entry->list);
7423                 lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
7424                 kfree(sglq_entry);
7425         }
7426
7427         /* Update the nvmet_xri_cnt to reflect no current sgls.
7428          * The next initialization cycle sets the count and allocates
7429          * the sgls over again.
7430          */
7431         phba->sli4_hba.nvmet_xri_cnt = 0;
7432 }
7433
7434 /**
7435  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
7436  * @phba: pointer to lpfc hba data structure.
7437  *
7438  * This routine is invoked to allocate the driver's active sgl memory.
7439  * This array will hold the sglq_entry's for active IOs.
7440  **/
7441 static int
7442 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
7443 {
7444         int size;
7445         size = sizeof(struct lpfc_sglq *);
7446         size *= phba->sli4_hba.max_cfg_param.max_xri;
7447
7448         phba->sli4_hba.lpfc_sglq_active_list =
7449                 kzalloc(size, GFP_KERNEL);
7450         if (!phba->sli4_hba.lpfc_sglq_active_list)
7451                 return -ENOMEM;
7452         return 0;
7453 }
7454
7455 /**
7456  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
7457  * @phba: pointer to lpfc hba data structure.
7458  *
7459  * This routine is invoked to walk through the array of active sglq entries
7460  * and free all of the resources.
7461  * This is just a place holder for now.
7462  **/
7463 static void
7464 lpfc_free_active_sgl(struct lpfc_hba *phba)
7465 {
7466         kfree(phba->sli4_hba.lpfc_sglq_active_list);
7467 }
7468
7469 /**
7470  * lpfc_init_sgl_list - Allocate and initialize sgl list.
7471  * @phba: pointer to lpfc hba data structure.
7472  *
7473  * This routine is invoked to allocate and initizlize the driver's sgl
7474  * list and set up the sgl xritag tag array accordingly.
7475  *
7476  **/
7477 static void
7478 lpfc_init_sgl_list(struct lpfc_hba *phba)
7479 {
7480         /* Initialize and populate the sglq list per host/VF. */
7481         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
7482         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7483         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
7484         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
7485
7486         /* els xri-sgl book keeping */
7487         phba->sli4_hba.els_xri_cnt = 0;
7488
7489         /* nvme xri-buffer book keeping */
7490         phba->sli4_hba.io_xri_cnt = 0;
7491 }
7492
7493 /**
7494  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
7495  * @phba: pointer to lpfc hba data structure.
7496  *
7497  * This routine is invoked to post rpi header templates to the
7498  * port for those SLI4 ports that do not support extents.  This routine
7499  * posts a PAGE_SIZE memory region to the port to hold up to
7500  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
7501  * and should be called only when interrupts are disabled.
7502  *
7503  * Return codes
7504  *      0 - successful
7505  *      -ERROR - otherwise.
7506  **/
7507 int
7508 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
7509 {
7510         int rc = 0;
7511         struct lpfc_rpi_hdr *rpi_hdr;
7512
7513         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
7514         if (!phba->sli4_hba.rpi_hdrs_in_use)
7515                 return rc;
7516         if (phba->sli4_hba.extents_in_use)
7517                 return -EIO;
7518
7519         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
7520         if (!rpi_hdr) {
7521                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7522                                 "0391 Error during rpi post operation\n");
7523                 lpfc_sli4_remove_rpis(phba);
7524                 rc = -ENODEV;
7525         }
7526
7527         return rc;
7528 }
7529
7530 /**
7531  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
7532  * @phba: pointer to lpfc hba data structure.
7533  *
7534  * This routine is invoked to allocate a single 4KB memory region to
7535  * support rpis and stores them in the phba.  This single region
7536  * provides support for up to 64 rpis.  The region is used globally
7537  * by the device.
7538  *
7539  * Returns:
7540  *   A valid rpi hdr on success.
7541  *   A NULL pointer on any failure.
7542  **/
7543 struct lpfc_rpi_hdr *
7544 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
7545 {
7546         uint16_t rpi_limit, curr_rpi_range;
7547         struct lpfc_dmabuf *dmabuf;
7548         struct lpfc_rpi_hdr *rpi_hdr;
7549
7550         /*
7551          * If the SLI4 port supports extents, posting the rpi header isn't
7552          * required.  Set the expected maximum count and let the actual value
7553          * get set when extents are fully allocated.
7554          */
7555         if (!phba->sli4_hba.rpi_hdrs_in_use)
7556                 return NULL;
7557         if (phba->sli4_hba.extents_in_use)
7558                 return NULL;
7559
7560         /* The limit on the logical index is just the max_rpi count. */
7561         rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
7562
7563         spin_lock_irq(&phba->hbalock);
7564         /*
7565          * Establish the starting RPI in this header block.  The starting
7566          * rpi is normalized to a zero base because the physical rpi is
7567          * port based.
7568          */
7569         curr_rpi_range = phba->sli4_hba.next_rpi;
7570         spin_unlock_irq(&phba->hbalock);
7571
7572         /* Reached full RPI range */
7573         if (curr_rpi_range == rpi_limit)
7574                 return NULL;
7575
7576         /*
7577          * First allocate the protocol header region for the port.  The
7578          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
7579          */
7580         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
7581         if (!dmabuf)
7582                 return NULL;
7583
7584         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
7585                                           LPFC_HDR_TEMPLATE_SIZE,
7586                                           &dmabuf->phys, GFP_KERNEL);
7587         if (!dmabuf->virt) {
7588                 rpi_hdr = NULL;
7589                 goto err_free_dmabuf;
7590         }
7591
7592         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
7593                 rpi_hdr = NULL;
7594                 goto err_free_coherent;
7595         }
7596
7597         /* Save the rpi header data for cleanup later. */
7598         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
7599         if (!rpi_hdr)
7600                 goto err_free_coherent;
7601
7602         rpi_hdr->dmabuf = dmabuf;
7603         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
7604         rpi_hdr->page_count = 1;
7605         spin_lock_irq(&phba->hbalock);
7606
7607         /* The rpi_hdr stores the logical index only. */
7608         rpi_hdr->start_rpi = curr_rpi_range;
7609         rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
7610         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
7611
7612         spin_unlock_irq(&phba->hbalock);
7613         return rpi_hdr;
7614
7615  err_free_coherent:
7616         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
7617                           dmabuf->virt, dmabuf->phys);
7618  err_free_dmabuf:
7619         kfree(dmabuf);
7620         return NULL;
7621 }
7622
7623 /**
7624  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
7625  * @phba: pointer to lpfc hba data structure.
7626  *
7627  * This routine is invoked to remove all memory resources allocated
7628  * to support rpis for SLI4 ports not supporting extents. This routine
7629  * presumes the caller has released all rpis consumed by fabric or port
7630  * logins and is prepared to have the header pages removed.
7631  **/
7632 void
7633 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
7634 {
7635         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
7636
7637         if (!phba->sli4_hba.rpi_hdrs_in_use)
7638                 goto exit;
7639
7640         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
7641                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
7642                 list_del(&rpi_hdr->list);
7643                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
7644                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
7645                 kfree(rpi_hdr->dmabuf);
7646                 kfree(rpi_hdr);
7647         }
7648  exit:
7649         /* There are no rpis available to the port now. */
7650         phba->sli4_hba.next_rpi = 0;
7651 }
7652
7653 /**
7654  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
7655  * @pdev: pointer to pci device data structure.
7656  *
7657  * This routine is invoked to allocate the driver hba data structure for an
7658  * HBA device. If the allocation is successful, the phba reference to the
7659  * PCI device data structure is set.
7660  *
7661  * Return codes
7662  *      pointer to @phba - successful
7663  *      NULL - error
7664  **/
7665 static struct lpfc_hba *
7666 lpfc_hba_alloc(struct pci_dev *pdev)
7667 {
7668         struct lpfc_hba *phba;
7669
7670         /* Allocate memory for HBA structure */
7671         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
7672         if (!phba) {
7673                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
7674                 return NULL;
7675         }
7676
7677         /* Set reference to PCI device in HBA structure */
7678         phba->pcidev = pdev;
7679
7680         /* Assign an unused board number */
7681         phba->brd_no = lpfc_get_instance();
7682         if (phba->brd_no < 0) {
7683                 kfree(phba);
7684                 return NULL;
7685         }
7686         phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
7687
7688         spin_lock_init(&phba->ct_ev_lock);
7689         INIT_LIST_HEAD(&phba->ct_ev_waiters);
7690
7691         return phba;
7692 }
7693
7694 /**
7695  * lpfc_hba_free - Free driver hba data structure with a device.
7696  * @phba: pointer to lpfc hba data structure.
7697  *
7698  * This routine is invoked to free the driver hba data structure with an
7699  * HBA device.
7700  **/
7701 static void
7702 lpfc_hba_free(struct lpfc_hba *phba)
7703 {
7704         if (phba->sli_rev == LPFC_SLI_REV4)
7705                 kfree(phba->sli4_hba.hdwq);
7706
7707         /* Release the driver assigned board number */
7708         idr_remove(&lpfc_hba_index, phba->brd_no);
7709
7710         /* Free memory allocated with sli3 rings */
7711         kfree(phba->sli.sli3_ring);
7712         phba->sli.sli3_ring = NULL;
7713
7714         kfree(phba);
7715         return;
7716 }
7717
7718 /**
7719  * lpfc_create_shost - Create hba physical port with associated scsi host.
7720  * @phba: pointer to lpfc hba data structure.
7721  *
7722  * This routine is invoked to create HBA physical port and associate a SCSI
7723  * host with it.
7724  *
7725  * Return codes
7726  *      0 - successful
7727  *      other values - error
7728  **/
7729 static int
7730 lpfc_create_shost(struct lpfc_hba *phba)
7731 {
7732         struct lpfc_vport *vport;
7733         struct Scsi_Host  *shost;
7734
7735         /* Initialize HBA FC structure */
7736         phba->fc_edtov = FF_DEF_EDTOV;
7737         phba->fc_ratov = FF_DEF_RATOV;
7738         phba->fc_altov = FF_DEF_ALTOV;
7739         phba->fc_arbtov = FF_DEF_ARBTOV;
7740
7741         atomic_set(&phba->sdev_cnt, 0);
7742         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
7743         if (!vport)
7744                 return -ENODEV;
7745
7746         shost = lpfc_shost_from_vport(vport);
7747         phba->pport = vport;
7748
7749         if (phba->nvmet_support) {
7750                 /* Only 1 vport (pport) will support NVME target */
7751                 phba->targetport = NULL;
7752                 phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
7753                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
7754                                 "6076 NVME Target Found\n");
7755         }
7756
7757         lpfc_debugfs_initialize(vport);
7758         /* Put reference to SCSI host to driver's device private data */
7759         pci_set_drvdata(phba->pcidev, shost);
7760
7761         /*
7762          * At this point we are fully registered with PSA. In addition,
7763          * any initial discovery should be completed.
7764          */
7765         vport->load_flag |= FC_ALLOW_FDMI;
7766         if (phba->cfg_enable_SmartSAN ||
7767             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
7768
7769                 /* Setup appropriate attribute masks */
7770                 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
7771                 if (phba->cfg_enable_SmartSAN)
7772                         vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
7773                 else
7774                         vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
7775         }
7776         return 0;
7777 }
7778
7779 /**
7780  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
7781  * @phba: pointer to lpfc hba data structure.
7782  *
7783  * This routine is invoked to destroy HBA physical port and the associated
7784  * SCSI host.
7785  **/
7786 static void
7787 lpfc_destroy_shost(struct lpfc_hba *phba)
7788 {
7789         struct lpfc_vport *vport = phba->pport;
7790
7791         /* Destroy physical port that associated with the SCSI host */
7792         destroy_port(vport);
7793
7794         return;
7795 }
7796
7797 /**
7798  * lpfc_setup_bg - Setup Block guard structures and debug areas.
7799  * @phba: pointer to lpfc hba data structure.
7800  * @shost: the shost to be used to detect Block guard settings.
7801  *
7802  * This routine sets up the local Block guard protocol settings for @shost.
7803  * This routine also allocates memory for debugging bg buffers.
7804  **/
7805 static void
7806 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
7807 {
7808         uint32_t old_mask;
7809         uint32_t old_guard;
7810
7811         if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7812                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7813                                 "1478 Registering BlockGuard with the "
7814                                 "SCSI layer\n");
7815
7816                 old_mask = phba->cfg_prot_mask;
7817                 old_guard = phba->cfg_prot_guard;
7818
7819                 /* Only allow supported values */
7820                 phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
7821                         SHOST_DIX_TYPE0_PROTECTION |
7822                         SHOST_DIX_TYPE1_PROTECTION);
7823                 phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
7824                                          SHOST_DIX_GUARD_CRC);
7825
7826                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
7827                 if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
7828                         phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
7829
7830                 if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7831                         if ((old_mask != phba->cfg_prot_mask) ||
7832                                 (old_guard != phba->cfg_prot_guard))
7833                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7834                                         "1475 Registering BlockGuard with the "
7835                                         "SCSI layer: mask %d  guard %d\n",
7836                                         phba->cfg_prot_mask,
7837                                         phba->cfg_prot_guard);
7838
7839                         scsi_host_set_prot(shost, phba->cfg_prot_mask);
7840                         scsi_host_set_guard(shost, phba->cfg_prot_guard);
7841                 } else
7842                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7843                                 "1479 Not Registering BlockGuard with the SCSI "
7844                                 "layer, Bad protection parameters: %d %d\n",
7845                                 old_mask, old_guard);
7846         }
7847 }
7848
7849 /**
7850  * lpfc_post_init_setup - Perform necessary device post initialization setup.
7851  * @phba: pointer to lpfc hba data structure.
7852  *
7853  * This routine is invoked to perform all the necessary post initialization
7854  * setup for the device.
7855  **/
7856 static void
7857 lpfc_post_init_setup(struct lpfc_hba *phba)
7858 {
7859         struct Scsi_Host  *shost;
7860         struct lpfc_adapter_event_header adapter_event;
7861
7862         /* Get the default values for Model Name and Description */
7863         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
7864
7865         /*
7866          * hba setup may have changed the hba_queue_depth so we need to
7867          * adjust the value of can_queue.
7868          */
7869         shost = pci_get_drvdata(phba->pcidev);
7870         shost->can_queue = phba->cfg_hba_queue_depth - 10;
7871
7872         lpfc_host_attrib_init(shost);
7873
7874         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7875                 spin_lock_irq(shost->host_lock);
7876                 lpfc_poll_start_timer(phba);
7877                 spin_unlock_irq(shost->host_lock);
7878         }
7879
7880         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7881                         "0428 Perform SCSI scan\n");
7882         /* Send board arrival event to upper layer */
7883         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
7884         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
7885         fc_host_post_vendor_event(shost, fc_get_event_number(),
7886                                   sizeof(adapter_event),
7887                                   (char *) &adapter_event,
7888                                   LPFC_NL_VENDOR_ID);
7889         return;
7890 }
7891
7892 /**
7893  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
7894  * @phba: pointer to lpfc hba data structure.
7895  *
7896  * This routine is invoked to set up the PCI device memory space for device
7897  * with SLI-3 interface spec.
7898  *
7899  * Return codes
7900  *      0 - successful
7901  *      other values - error
7902  **/
7903 static int
7904 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
7905 {
7906         struct pci_dev *pdev = phba->pcidev;
7907         unsigned long bar0map_len, bar2map_len;
7908         int i, hbq_count;
7909         void *ptr;
7910         int error;
7911
7912         if (!pdev)
7913                 return -ENODEV;
7914
7915         /* Set the device DMA mask size */
7916         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
7917         if (error)
7918                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
7919         if (error)
7920                 return error;
7921         error = -ENODEV;
7922
7923         /* Get the bus address of Bar0 and Bar2 and the number of bytes
7924          * required by each mapping.
7925          */
7926         phba->pci_bar0_map = pci_resource_start(pdev, 0);
7927         bar0map_len = pci_resource_len(pdev, 0);
7928
7929         phba->pci_bar2_map = pci_resource_start(pdev, 2);
7930         bar2map_len = pci_resource_len(pdev, 2);
7931
7932         /* Map HBA SLIM to a kernel virtual address. */
7933         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
7934         if (!phba->slim_memmap_p) {
7935                 dev_printk(KERN_ERR, &pdev->dev,
7936                            "ioremap failed for SLIM memory.\n");
7937                 goto out;
7938         }
7939
7940         /* Map HBA Control Registers to a kernel virtual address. */
7941         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
7942         if (!phba->ctrl_regs_memmap_p) {
7943                 dev_printk(KERN_ERR, &pdev->dev,
7944                            "ioremap failed for HBA control registers.\n");
7945                 goto out_iounmap_slim;
7946         }
7947
7948         /* Allocate memory for SLI-2 structures */
7949         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7950                                                &phba->slim2p.phys, GFP_KERNEL);
7951         if (!phba->slim2p.virt)
7952                 goto out_iounmap;
7953
7954         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
7955         phba->mbox_ext = (phba->slim2p.virt +
7956                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
7957         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
7958         phba->IOCBs = (phba->slim2p.virt +
7959                        offsetof(struct lpfc_sli2_slim, IOCBs));
7960
7961         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
7962                                                  lpfc_sli_hbq_size(),
7963                                                  &phba->hbqslimp.phys,
7964                                                  GFP_KERNEL);
7965         if (!phba->hbqslimp.virt)
7966                 goto out_free_slim;
7967
7968         hbq_count = lpfc_sli_hbq_count();
7969         ptr = phba->hbqslimp.virt;
7970         for (i = 0; i < hbq_count; ++i) {
7971                 phba->hbqs[i].hbq_virt = ptr;
7972                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
7973                 ptr += (lpfc_hbq_defs[i]->entry_count *
7974                         sizeof(struct lpfc_hbq_entry));
7975         }
7976         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
7977         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
7978
7979         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
7980
7981         phba->MBslimaddr = phba->slim_memmap_p;
7982         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
7983         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
7984         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
7985         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
7986
7987         return 0;
7988
7989 out_free_slim:
7990         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7991                           phba->slim2p.virt, phba->slim2p.phys);
7992 out_iounmap:
7993         iounmap(phba->ctrl_regs_memmap_p);
7994 out_iounmap_slim:
7995         iounmap(phba->slim_memmap_p);
7996 out:
7997         return error;
7998 }
7999
8000 /**
8001  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
8002  * @phba: pointer to lpfc hba data structure.
8003  *
8004  * This routine is invoked to unset the PCI device memory space for device
8005  * with SLI-3 interface spec.
8006  **/
8007 static void
8008 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
8009 {
8010         struct pci_dev *pdev;
8011
8012         /* Obtain PCI device reference */
8013         if (!phba->pcidev)
8014                 return;
8015         else
8016                 pdev = phba->pcidev;
8017
8018         /* Free coherent DMA memory allocated */
8019         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
8020                           phba->hbqslimp.virt, phba->hbqslimp.phys);
8021         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
8022                           phba->slim2p.virt, phba->slim2p.phys);
8023
8024         /* I/O memory unmap */
8025         iounmap(phba->ctrl_regs_memmap_p);
8026         iounmap(phba->slim_memmap_p);
8027
8028         return;
8029 }
8030
8031 /**
8032  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
8033  * @phba: pointer to lpfc hba data structure.
8034  *
8035  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
8036  * done and check status.
8037  *
8038  * Return 0 if successful, otherwise -ENODEV.
8039  **/
8040 int
8041 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
8042 {
8043         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
8044         struct lpfc_register reg_data;
8045         int i, port_error = 0;
8046         uint32_t if_type;
8047
8048         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
8049         memset(&reg_data, 0, sizeof(reg_data));
8050         if (!phba->sli4_hba.PSMPHRregaddr)
8051                 return -ENODEV;
8052
8053         /* Wait up to 30 seconds for the SLI Port POST done and ready */
8054         for (i = 0; i < 3000; i++) {
8055                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
8056                         &portsmphr_reg.word0) ||
8057                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
8058                         /* Port has a fatal POST error, break out */
8059                         port_error = -ENODEV;
8060                         break;
8061                 }
8062                 if (LPFC_POST_STAGE_PORT_READY ==
8063                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
8064                         break;
8065                 msleep(10);
8066         }
8067
8068         /*
8069          * If there was a port error during POST, then don't proceed with
8070          * other register reads as the data may not be valid.  Just exit.
8071          */
8072         if (port_error) {
8073                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8074                         "1408 Port Failed POST - portsmphr=0x%x, "
8075                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
8076                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
8077                         portsmphr_reg.word0,
8078                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
8079                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
8080                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
8081                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
8082                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
8083                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
8084                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
8085                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
8086         } else {
8087                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8088                                 "2534 Device Info: SLIFamily=0x%x, "
8089                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
8090                                 "SLIHint_2=0x%x, FT=0x%x\n",
8091                                 bf_get(lpfc_sli_intf_sli_family,
8092                                        &phba->sli4_hba.sli_intf),
8093                                 bf_get(lpfc_sli_intf_slirev,
8094                                        &phba->sli4_hba.sli_intf),
8095                                 bf_get(lpfc_sli_intf_if_type,
8096                                        &phba->sli4_hba.sli_intf),
8097                                 bf_get(lpfc_sli_intf_sli_hint1,
8098                                        &phba->sli4_hba.sli_intf),
8099                                 bf_get(lpfc_sli_intf_sli_hint2,
8100                                        &phba->sli4_hba.sli_intf),
8101                                 bf_get(lpfc_sli_intf_func_type,
8102                                        &phba->sli4_hba.sli_intf));
8103                 /*
8104                  * Check for other Port errors during the initialization
8105                  * process.  Fail the load if the port did not come up
8106                  * correctly.
8107                  */
8108                 if_type = bf_get(lpfc_sli_intf_if_type,
8109                                  &phba->sli4_hba.sli_intf);
8110                 switch (if_type) {
8111                 case LPFC_SLI_INTF_IF_TYPE_0:
8112                         phba->sli4_hba.ue_mask_lo =
8113                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
8114                         phba->sli4_hba.ue_mask_hi =
8115                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
8116                         uerrlo_reg.word0 =
8117                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
8118                         uerrhi_reg.word0 =
8119                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
8120                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
8121                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
8122                                 lpfc_printf_log(phba, KERN_ERR,
8123                                                 LOG_TRACE_EVENT,
8124                                                 "1422 Unrecoverable Error "
8125                                                 "Detected during POST "
8126                                                 "uerr_lo_reg=0x%x, "
8127                                                 "uerr_hi_reg=0x%x, "
8128                                                 "ue_mask_lo_reg=0x%x, "
8129                                                 "ue_mask_hi_reg=0x%x\n",
8130                                                 uerrlo_reg.word0,
8131                                                 uerrhi_reg.word0,
8132                                                 phba->sli4_hba.ue_mask_lo,
8133                                                 phba->sli4_hba.ue_mask_hi);
8134                                 port_error = -ENODEV;
8135                         }
8136                         break;
8137                 case LPFC_SLI_INTF_IF_TYPE_2:
8138                 case LPFC_SLI_INTF_IF_TYPE_6:
8139                         /* Final checks.  The port status should be clean. */
8140                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
8141                                 &reg_data.word0) ||
8142                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
8143                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
8144                                 phba->work_status[0] =
8145                                         readl(phba->sli4_hba.u.if_type2.
8146                                               ERR1regaddr);
8147                                 phba->work_status[1] =
8148                                         readl(phba->sli4_hba.u.if_type2.
8149                                               ERR2regaddr);
8150                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8151                                         "2888 Unrecoverable port error "
8152                                         "following POST: port status reg "
8153                                         "0x%x, port_smphr reg 0x%x, "
8154                                         "error 1=0x%x, error 2=0x%x\n",
8155                                         reg_data.word0,
8156                                         portsmphr_reg.word0,
8157                                         phba->work_status[0],
8158                                         phba->work_status[1]);
8159                                 port_error = -ENODEV;
8160                         }
8161                         break;
8162                 case LPFC_SLI_INTF_IF_TYPE_1:
8163                 default:
8164                         break;
8165                 }
8166         }
8167         return port_error;
8168 }
8169
8170 /**
8171  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
8172  * @phba: pointer to lpfc hba data structure.
8173  * @if_type:  The SLI4 interface type getting configured.
8174  *
8175  * This routine is invoked to set up SLI4 BAR0 PCI config space register
8176  * memory map.
8177  **/
8178 static void
8179 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8180 {
8181         switch (if_type) {
8182         case LPFC_SLI_INTF_IF_TYPE_0:
8183                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
8184                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
8185                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
8186                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
8187                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
8188                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
8189                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
8190                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
8191                 phba->sli4_hba.SLIINTFregaddr =
8192                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8193                 break;
8194         case LPFC_SLI_INTF_IF_TYPE_2:
8195                 phba->sli4_hba.u.if_type2.EQDregaddr =
8196                         phba->sli4_hba.conf_regs_memmap_p +
8197                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8198                 phba->sli4_hba.u.if_type2.ERR1regaddr =
8199                         phba->sli4_hba.conf_regs_memmap_p +
8200                                                 LPFC_CTL_PORT_ER1_OFFSET;
8201                 phba->sli4_hba.u.if_type2.ERR2regaddr =
8202                         phba->sli4_hba.conf_regs_memmap_p +
8203                                                 LPFC_CTL_PORT_ER2_OFFSET;
8204                 phba->sli4_hba.u.if_type2.CTRLregaddr =
8205                         phba->sli4_hba.conf_regs_memmap_p +
8206                                                 LPFC_CTL_PORT_CTL_OFFSET;
8207                 phba->sli4_hba.u.if_type2.STATUSregaddr =
8208                         phba->sli4_hba.conf_regs_memmap_p +
8209                                                 LPFC_CTL_PORT_STA_OFFSET;
8210                 phba->sli4_hba.SLIINTFregaddr =
8211                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8212                 phba->sli4_hba.PSMPHRregaddr =
8213                         phba->sli4_hba.conf_regs_memmap_p +
8214                                                 LPFC_CTL_PORT_SEM_OFFSET;
8215                 phba->sli4_hba.RQDBregaddr =
8216                         phba->sli4_hba.conf_regs_memmap_p +
8217                                                 LPFC_ULP0_RQ_DOORBELL;
8218                 phba->sli4_hba.WQDBregaddr =
8219                         phba->sli4_hba.conf_regs_memmap_p +
8220                                                 LPFC_ULP0_WQ_DOORBELL;
8221                 phba->sli4_hba.CQDBregaddr =
8222                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
8223                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8224                 phba->sli4_hba.MQDBregaddr =
8225                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
8226                 phba->sli4_hba.BMBXregaddr =
8227                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8228                 break;
8229         case LPFC_SLI_INTF_IF_TYPE_6:
8230                 phba->sli4_hba.u.if_type2.EQDregaddr =
8231                         phba->sli4_hba.conf_regs_memmap_p +
8232                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8233                 phba->sli4_hba.u.if_type2.ERR1regaddr =
8234                         phba->sli4_hba.conf_regs_memmap_p +
8235                                                 LPFC_CTL_PORT_ER1_OFFSET;
8236                 phba->sli4_hba.u.if_type2.ERR2regaddr =
8237                         phba->sli4_hba.conf_regs_memmap_p +
8238                                                 LPFC_CTL_PORT_ER2_OFFSET;
8239                 phba->sli4_hba.u.if_type2.CTRLregaddr =
8240                         phba->sli4_hba.conf_regs_memmap_p +
8241                                                 LPFC_CTL_PORT_CTL_OFFSET;
8242                 phba->sli4_hba.u.if_type2.STATUSregaddr =
8243                         phba->sli4_hba.conf_regs_memmap_p +
8244                                                 LPFC_CTL_PORT_STA_OFFSET;
8245                 phba->sli4_hba.PSMPHRregaddr =
8246                         phba->sli4_hba.conf_regs_memmap_p +
8247                                                 LPFC_CTL_PORT_SEM_OFFSET;
8248                 phba->sli4_hba.BMBXregaddr =
8249                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8250                 break;
8251         case LPFC_SLI_INTF_IF_TYPE_1:
8252         default:
8253                 dev_printk(KERN_ERR, &phba->pcidev->dev,
8254                            "FATAL - unsupported SLI4 interface type - %d\n",
8255                            if_type);
8256                 break;
8257         }
8258 }
8259
8260 /**
8261  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
8262  * @phba: pointer to lpfc hba data structure.
8263  * @if_type: sli if type to operate on.
8264  *
8265  * This routine is invoked to set up SLI4 BAR1 register memory map.
8266  **/
8267 static void
8268 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8269 {
8270         switch (if_type) {
8271         case LPFC_SLI_INTF_IF_TYPE_0:
8272                 phba->sli4_hba.PSMPHRregaddr =
8273                         phba->sli4_hba.ctrl_regs_memmap_p +
8274                         LPFC_SLIPORT_IF0_SMPHR;
8275                 phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8276                         LPFC_HST_ISR0;
8277                 phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8278                         LPFC_HST_IMR0;
8279                 phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8280                         LPFC_HST_ISCR0;
8281                 break;
8282         case LPFC_SLI_INTF_IF_TYPE_6:
8283                 phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8284                         LPFC_IF6_RQ_DOORBELL;
8285                 phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8286                         LPFC_IF6_WQ_DOORBELL;
8287                 phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8288                         LPFC_IF6_CQ_DOORBELL;
8289                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8290                         LPFC_IF6_EQ_DOORBELL;
8291                 phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8292                         LPFC_IF6_MQ_DOORBELL;
8293                 break;
8294         case LPFC_SLI_INTF_IF_TYPE_2:
8295         case LPFC_SLI_INTF_IF_TYPE_1:
8296         default:
8297                 dev_err(&phba->pcidev->dev,
8298                            "FATAL - unsupported SLI4 interface type - %d\n",
8299                            if_type);
8300                 break;
8301         }
8302 }
8303
8304 /**
8305  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
8306  * @phba: pointer to lpfc hba data structure.
8307  * @vf: virtual function number
8308  *
8309  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
8310  * based on the given viftual function number, @vf.
8311  *
8312  * Return 0 if successful, otherwise -ENODEV.
8313  **/
8314 static int
8315 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
8316 {
8317         if (vf > LPFC_VIR_FUNC_MAX)
8318                 return -ENODEV;
8319
8320         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8321                                 vf * LPFC_VFR_PAGE_SIZE +
8322                                         LPFC_ULP0_RQ_DOORBELL);
8323         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8324                                 vf * LPFC_VFR_PAGE_SIZE +
8325                                         LPFC_ULP0_WQ_DOORBELL);
8326         phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8327                                 vf * LPFC_VFR_PAGE_SIZE +
8328                                         LPFC_EQCQ_DOORBELL);
8329         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8330         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8331                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
8332         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8333                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
8334         return 0;
8335 }
8336
8337 /**
8338  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
8339  * @phba: pointer to lpfc hba data structure.
8340  *
8341  * This routine is invoked to create the bootstrap mailbox
8342  * region consistent with the SLI-4 interface spec.  This
8343  * routine allocates all memory necessary to communicate
8344  * mailbox commands to the port and sets up all alignment
8345  * needs.  No locks are expected to be held when calling
8346  * this routine.
8347  *
8348  * Return codes
8349  *      0 - successful
8350  *      -ENOMEM - could not allocated memory.
8351  **/
8352 static int
8353 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
8354 {
8355         uint32_t bmbx_size;
8356         struct lpfc_dmabuf *dmabuf;
8357         struct dma_address *dma_address;
8358         uint32_t pa_addr;
8359         uint64_t phys_addr;
8360
8361         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8362         if (!dmabuf)
8363                 return -ENOMEM;
8364
8365         /*
8366          * The bootstrap mailbox region is comprised of 2 parts
8367          * plus an alignment restriction of 16 bytes.
8368          */
8369         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
8370         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
8371                                           &dmabuf->phys, GFP_KERNEL);
8372         if (!dmabuf->virt) {
8373                 kfree(dmabuf);
8374                 return -ENOMEM;
8375         }
8376
8377         /*
8378          * Initialize the bootstrap mailbox pointers now so that the register
8379          * operations are simple later.  The mailbox dma address is required
8380          * to be 16-byte aligned.  Also align the virtual memory as each
8381          * maibox is copied into the bmbx mailbox region before issuing the
8382          * command to the port.
8383          */
8384         phba->sli4_hba.bmbx.dmabuf = dmabuf;
8385         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
8386
8387         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
8388                                               LPFC_ALIGN_16_BYTE);
8389         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
8390                                               LPFC_ALIGN_16_BYTE);
8391
8392         /*
8393          * Set the high and low physical addresses now.  The SLI4 alignment
8394          * requirement is 16 bytes and the mailbox is posted to the port
8395          * as two 30-bit addresses.  The other data is a bit marking whether
8396          * the 30-bit address is the high or low address.
8397          * Upcast bmbx aphys to 64bits so shift instruction compiles
8398          * clean on 32 bit machines.
8399          */
8400         dma_address = &phba->sli4_hba.bmbx.dma_address;
8401         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
8402         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
8403         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
8404                                            LPFC_BMBX_BIT1_ADDR_HI);
8405
8406         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
8407         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
8408                                            LPFC_BMBX_BIT1_ADDR_LO);
8409         return 0;
8410 }
8411
8412 /**
8413  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
8414  * @phba: pointer to lpfc hba data structure.
8415  *
8416  * This routine is invoked to teardown the bootstrap mailbox
8417  * region and release all host resources. This routine requires
8418  * the caller to ensure all mailbox commands recovered, no
8419  * additional mailbox comands are sent, and interrupts are disabled
8420  * before calling this routine.
8421  *
8422  **/
8423 static void
8424 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
8425 {
8426         dma_free_coherent(&phba->pcidev->dev,
8427                           phba->sli4_hba.bmbx.bmbx_size,
8428                           phba->sli4_hba.bmbx.dmabuf->virt,
8429                           phba->sli4_hba.bmbx.dmabuf->phys);
8430
8431         kfree(phba->sli4_hba.bmbx.dmabuf);
8432         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
8433 }
8434
8435 static const char * const lpfc_topo_to_str[] = {
8436         "Loop then P2P",
8437         "Loopback",
8438         "P2P Only",
8439         "Unsupported",
8440         "Loop Only",
8441         "Unsupported",
8442         "P2P then Loop",
8443 };
8444
8445 #define LINK_FLAGS_DEF  0x0
8446 #define LINK_FLAGS_P2P  0x1
8447 #define LINK_FLAGS_LOOP 0x2
8448 /**
8449  * lpfc_map_topology - Map the topology read from READ_CONFIG
8450  * @phba: pointer to lpfc hba data structure.
8451  * @rd_config: pointer to read config data
8452  *
8453  * This routine is invoked to map the topology values as read
8454  * from the read config mailbox command. If the persistent
8455  * topology feature is supported, the firmware will provide the
8456  * saved topology information to be used in INIT_LINK
8457  **/
8458 static void
8459 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
8460 {
8461         u8 ptv, tf, pt;
8462
8463         ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
8464         tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
8465         pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
8466
8467         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8468                         "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
8469                          ptv, tf, pt);
8470         if (!ptv) {
8471                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8472                                 "2019 FW does not support persistent topology "
8473                                 "Using driver parameter defined value [%s]",
8474                                 lpfc_topo_to_str[phba->cfg_topology]);
8475                 return;
8476         }
8477         /* FW supports persistent topology - override module parameter value */
8478         phba->hba_flag |= HBA_PERSISTENT_TOPO;
8479         switch (phba->pcidev->device) {
8480         case PCI_DEVICE_ID_LANCER_G7_FC:
8481         case PCI_DEVICE_ID_LANCER_G6_FC:
8482                 if (!tf) {
8483                         phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
8484                                         ? FLAGS_TOPOLOGY_MODE_LOOP
8485                                         : FLAGS_TOPOLOGY_MODE_PT_PT);
8486                 } else {
8487                         phba->hba_flag &= ~HBA_PERSISTENT_TOPO;
8488                 }
8489                 break;
8490         default:        /* G5 */
8491                 if (tf) {
8492                         /* If topology failover set - pt is '0' or '1' */
8493                         phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
8494                                               FLAGS_TOPOLOGY_MODE_LOOP_PT);
8495                 } else {
8496                         phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
8497                                         ? FLAGS_TOPOLOGY_MODE_PT_PT
8498                                         : FLAGS_TOPOLOGY_MODE_LOOP);
8499                 }
8500                 break;
8501         }
8502         if (phba->hba_flag & HBA_PERSISTENT_TOPO) {
8503                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8504                                 "2020 Using persistent topology value [%s]",
8505                                 lpfc_topo_to_str[phba->cfg_topology]);
8506         } else {
8507                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8508                                 "2021 Invalid topology values from FW "
8509                                 "Using driver parameter defined value [%s]",
8510                                 lpfc_topo_to_str[phba->cfg_topology]);
8511         }
8512 }
8513
8514 /**
8515  * lpfc_sli4_read_config - Get the config parameters.
8516  * @phba: pointer to lpfc hba data structure.
8517  *
8518  * This routine is invoked to read the configuration parameters from the HBA.
8519  * The configuration parameters are used to set the base and maximum values
8520  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
8521  * allocation for the port.
8522  *
8523  * Return codes
8524  *      0 - successful
8525  *      -ENOMEM - No available memory
8526  *      -EIO - The mailbox failed to complete successfully.
8527  **/
8528 int
8529 lpfc_sli4_read_config(struct lpfc_hba *phba)
8530 {
8531         LPFC_MBOXQ_t *pmb;
8532         struct lpfc_mbx_read_config *rd_config;
8533         union  lpfc_sli4_cfg_shdr *shdr;
8534         uint32_t shdr_status, shdr_add_status;
8535         struct lpfc_mbx_get_func_cfg *get_func_cfg;
8536         struct lpfc_rsrc_desc_fcfcoe *desc;
8537         char *pdesc_0;
8538         uint16_t forced_link_speed;
8539         uint32_t if_type, qmin;
8540         int length, i, rc = 0, rc2;
8541
8542         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8543         if (!pmb) {
8544                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8545                                 "2011 Unable to allocate memory for issuing "
8546                                 "SLI_CONFIG_SPECIAL mailbox command\n");
8547                 return -ENOMEM;
8548         }
8549
8550         lpfc_read_config(phba, pmb);
8551
8552         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8553         if (rc != MBX_SUCCESS) {
8554                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8555                                 "2012 Mailbox failed , mbxCmd x%x "
8556                                 "READ_CONFIG, mbxStatus x%x\n",
8557                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
8558                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
8559                 rc = -EIO;
8560         } else {
8561                 rd_config = &pmb->u.mqe.un.rd_config;
8562                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
8563                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
8564                         phba->sli4_hba.lnk_info.lnk_tp =
8565                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
8566                         phba->sli4_hba.lnk_info.lnk_no =
8567                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
8568                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8569                                         "3081 lnk_type:%d, lnk_numb:%d\n",
8570                                         phba->sli4_hba.lnk_info.lnk_tp,
8571                                         phba->sli4_hba.lnk_info.lnk_no);
8572                 } else
8573                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8574                                         "3082 Mailbox (x%x) returned ldv:x0\n",
8575                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
8576                 if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
8577                         phba->bbcredit_support = 1;
8578                         phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
8579                 }
8580
8581                 phba->sli4_hba.conf_trunk =
8582                         bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
8583                 phba->sli4_hba.extents_in_use =
8584                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
8585                 phba->sli4_hba.max_cfg_param.max_xri =
8586                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
8587                 /* Reduce resource usage in kdump environment */
8588                 if (is_kdump_kernel() &&
8589                     phba->sli4_hba.max_cfg_param.max_xri > 512)
8590                         phba->sli4_hba.max_cfg_param.max_xri = 512;
8591                 phba->sli4_hba.max_cfg_param.xri_base =
8592                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
8593                 phba->sli4_hba.max_cfg_param.max_vpi =
8594                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
8595                 /* Limit the max we support */
8596                 if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
8597                         phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
8598                 phba->sli4_hba.max_cfg_param.vpi_base =
8599                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
8600                 phba->sli4_hba.max_cfg_param.max_rpi =
8601                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
8602                 phba->sli4_hba.max_cfg_param.rpi_base =
8603                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
8604                 phba->sli4_hba.max_cfg_param.max_vfi =
8605                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
8606                 phba->sli4_hba.max_cfg_param.vfi_base =
8607                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
8608                 phba->sli4_hba.max_cfg_param.max_fcfi =
8609                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
8610                 phba->sli4_hba.max_cfg_param.max_eq =
8611                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
8612                 phba->sli4_hba.max_cfg_param.max_rq =
8613                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
8614                 phba->sli4_hba.max_cfg_param.max_wq =
8615                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
8616                 phba->sli4_hba.max_cfg_param.max_cq =
8617                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
8618                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
8619                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
8620                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
8621                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
8622                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
8623                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
8624                 phba->max_vports = phba->max_vpi;
8625                 lpfc_map_topology(phba, rd_config);
8626                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8627                                 "2003 cfg params Extents? %d "
8628                                 "XRI(B:%d M:%d), "
8629                                 "VPI(B:%d M:%d) "
8630                                 "VFI(B:%d M:%d) "
8631                                 "RPI(B:%d M:%d) "
8632                                 "FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
8633                                 phba->sli4_hba.extents_in_use,
8634                                 phba->sli4_hba.max_cfg_param.xri_base,
8635                                 phba->sli4_hba.max_cfg_param.max_xri,
8636                                 phba->sli4_hba.max_cfg_param.vpi_base,
8637                                 phba->sli4_hba.max_cfg_param.max_vpi,
8638                                 phba->sli4_hba.max_cfg_param.vfi_base,
8639                                 phba->sli4_hba.max_cfg_param.max_vfi,
8640                                 phba->sli4_hba.max_cfg_param.rpi_base,
8641                                 phba->sli4_hba.max_cfg_param.max_rpi,
8642                                 phba->sli4_hba.max_cfg_param.max_fcfi,
8643                                 phba->sli4_hba.max_cfg_param.max_eq,
8644                                 phba->sli4_hba.max_cfg_param.max_cq,
8645                                 phba->sli4_hba.max_cfg_param.max_wq,
8646                                 phba->sli4_hba.max_cfg_param.max_rq,
8647                                 phba->lmt);
8648
8649                 /*
8650                  * Calculate queue resources based on how
8651                  * many WQ/CQ/EQs are available.
8652                  */
8653                 qmin = phba->sli4_hba.max_cfg_param.max_wq;
8654                 if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
8655                         qmin = phba->sli4_hba.max_cfg_param.max_cq;
8656                 if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
8657                         qmin = phba->sli4_hba.max_cfg_param.max_eq;
8658                 /*
8659                  * Whats left after this can go toward NVME / FCP.
8660                  * The minus 4 accounts for ELS, NVME LS, MBOX
8661                  * plus one extra. When configured for
8662                  * NVMET, FCP io channel WQs are not created.
8663                  */
8664                 qmin -= 4;
8665
8666                 /* Check to see if there is enough for NVME */
8667                 if ((phba->cfg_irq_chann > qmin) ||
8668                     (phba->cfg_hdw_queue > qmin)) {
8669                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8670                                         "2005 Reducing Queues - "
8671                                         "FW resource limitation: "
8672                                         "WQ %d CQ %d EQ %d: min %d: "
8673                                         "IRQ %d HDWQ %d\n",
8674                                         phba->sli4_hba.max_cfg_param.max_wq,
8675                                         phba->sli4_hba.max_cfg_param.max_cq,
8676                                         phba->sli4_hba.max_cfg_param.max_eq,
8677                                         qmin, phba->cfg_irq_chann,
8678                                         phba->cfg_hdw_queue);
8679
8680                         if (phba->cfg_irq_chann > qmin)
8681                                 phba->cfg_irq_chann = qmin;
8682                         if (phba->cfg_hdw_queue > qmin)
8683                                 phba->cfg_hdw_queue = qmin;
8684                 }
8685         }
8686
8687         if (rc)
8688                 goto read_cfg_out;
8689
8690         /* Update link speed if forced link speed is supported */
8691         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8692         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
8693                 forced_link_speed =
8694                         bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
8695                 if (forced_link_speed) {
8696                         phba->hba_flag |= HBA_FORCED_LINK_SPEED;
8697
8698                         switch (forced_link_speed) {
8699                         case LINK_SPEED_1G:
8700                                 phba->cfg_link_speed =
8701                                         LPFC_USER_LINK_SPEED_1G;
8702                                 break;
8703                         case LINK_SPEED_2G:
8704                                 phba->cfg_link_speed =
8705                                         LPFC_USER_LINK_SPEED_2G;
8706                                 break;
8707                         case LINK_SPEED_4G:
8708                                 phba->cfg_link_speed =
8709                                         LPFC_USER_LINK_SPEED_4G;
8710                                 break;
8711                         case LINK_SPEED_8G:
8712                                 phba->cfg_link_speed =
8713                                         LPFC_USER_LINK_SPEED_8G;
8714                                 break;
8715                         case LINK_SPEED_10G:
8716                                 phba->cfg_link_speed =
8717                                         LPFC_USER_LINK_SPEED_10G;
8718                                 break;
8719                         case LINK_SPEED_16G:
8720                                 phba->cfg_link_speed =
8721                                         LPFC_USER_LINK_SPEED_16G;
8722                                 break;
8723                         case LINK_SPEED_32G:
8724                                 phba->cfg_link_speed =
8725                                         LPFC_USER_LINK_SPEED_32G;
8726                                 break;
8727                         case LINK_SPEED_64G:
8728                                 phba->cfg_link_speed =
8729                                         LPFC_USER_LINK_SPEED_64G;
8730                                 break;
8731                         case 0xffff:
8732                                 phba->cfg_link_speed =
8733                                         LPFC_USER_LINK_SPEED_AUTO;
8734                                 break;
8735                         default:
8736                                 lpfc_printf_log(phba, KERN_ERR,
8737                                                 LOG_TRACE_EVENT,
8738                                                 "0047 Unrecognized link "
8739                                                 "speed : %d\n",
8740                                                 forced_link_speed);
8741                                 phba->cfg_link_speed =
8742                                         LPFC_USER_LINK_SPEED_AUTO;
8743                         }
8744                 }
8745         }
8746
8747         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
8748         length = phba->sli4_hba.max_cfg_param.max_xri -
8749                         lpfc_sli4_get_els_iocb_cnt(phba);
8750         if (phba->cfg_hba_queue_depth > length) {
8751                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8752                                 "3361 HBA queue depth changed from %d to %d\n",
8753                                 phba->cfg_hba_queue_depth, length);
8754                 phba->cfg_hba_queue_depth = length;
8755         }
8756
8757         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
8758             LPFC_SLI_INTF_IF_TYPE_2)
8759                 goto read_cfg_out;
8760
8761         /* get the pf# and vf# for SLI4 if_type 2 port */
8762         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
8763                   sizeof(struct lpfc_sli4_cfg_mhdr));
8764         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
8765                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
8766                          length, LPFC_SLI4_MBX_EMBED);
8767
8768         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8769         shdr = (union lpfc_sli4_cfg_shdr *)
8770                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
8771         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
8772         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
8773         if (rc2 || shdr_status || shdr_add_status) {
8774                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8775                                 "3026 Mailbox failed , mbxCmd x%x "
8776                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
8777                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
8778                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
8779                 goto read_cfg_out;
8780         }
8781
8782         /* search for fc_fcoe resrouce descriptor */
8783         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
8784
8785         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
8786         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
8787         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
8788         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
8789                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
8790         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
8791                 goto read_cfg_out;
8792
8793         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
8794                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
8795                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
8796                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
8797                         phba->sli4_hba.iov.pf_number =
8798                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
8799                         phba->sli4_hba.iov.vf_number =
8800                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
8801                         break;
8802                 }
8803         }
8804
8805         if (i < LPFC_RSRC_DESC_MAX_NUM)
8806                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8807                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
8808                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
8809                                 phba->sli4_hba.iov.vf_number);
8810         else
8811                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8812                                 "3028 GET_FUNCTION_CONFIG: failed to find "
8813                                 "Resource Descriptor:x%x\n",
8814                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
8815
8816 read_cfg_out:
8817         mempool_free(pmb, phba->mbox_mem_pool);
8818         return rc;
8819 }
8820
8821 /**
8822  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
8823  * @phba: pointer to lpfc hba data structure.
8824  *
8825  * This routine is invoked to setup the port-side endian order when
8826  * the port if_type is 0.  This routine has no function for other
8827  * if_types.
8828  *
8829  * Return codes
8830  *      0 - successful
8831  *      -ENOMEM - No available memory
8832  *      -EIO - The mailbox failed to complete successfully.
8833  **/
8834 static int
8835 lpfc_setup_endian_order(struct lpfc_hba *phba)
8836 {
8837         LPFC_MBOXQ_t *mboxq;
8838         uint32_t if_type, rc = 0;
8839         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
8840                                       HOST_ENDIAN_HIGH_WORD1};
8841
8842         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8843         switch (if_type) {
8844         case LPFC_SLI_INTF_IF_TYPE_0:
8845                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
8846                                                        GFP_KERNEL);
8847                 if (!mboxq) {
8848                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8849                                         "0492 Unable to allocate memory for "
8850                                         "issuing SLI_CONFIG_SPECIAL mailbox "
8851                                         "command\n");
8852                         return -ENOMEM;
8853                 }
8854
8855                 /*
8856                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
8857                  * two words to contain special data values and no other data.
8858                  */
8859                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
8860                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
8861                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8862                 if (rc != MBX_SUCCESS) {
8863                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8864                                         "0493 SLI_CONFIG_SPECIAL mailbox "
8865                                         "failed with status x%x\n",
8866                                         rc);
8867                         rc = -EIO;
8868                 }
8869                 mempool_free(mboxq, phba->mbox_mem_pool);
8870                 break;
8871         case LPFC_SLI_INTF_IF_TYPE_6:
8872         case LPFC_SLI_INTF_IF_TYPE_2:
8873         case LPFC_SLI_INTF_IF_TYPE_1:
8874         default:
8875                 break;
8876         }
8877         return rc;
8878 }
8879
8880 /**
8881  * lpfc_sli4_queue_verify - Verify and update EQ counts
8882  * @phba: pointer to lpfc hba data structure.
8883  *
8884  * This routine is invoked to check the user settable queue counts for EQs.
8885  * After this routine is called the counts will be set to valid values that
8886  * adhere to the constraints of the system's interrupt vectors and the port's
8887  * queue resources.
8888  *
8889  * Return codes
8890  *      0 - successful
8891  *      -ENOMEM - No available memory
8892  **/
8893 static int
8894 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
8895 {
8896         /*
8897          * Sanity check for configured queue parameters against the run-time
8898          * device parameters
8899          */
8900
8901         if (phba->nvmet_support) {
8902                 if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
8903                         phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
8904                 if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
8905                         phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
8906         }
8907
8908         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8909                         "2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
8910                         phba->cfg_hdw_queue, phba->cfg_irq_chann,
8911                         phba->cfg_nvmet_mrq);
8912
8913         /* Get EQ depth from module parameter, fake the default for now */
8914         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8915         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8916
8917         /* Get CQ depth from module parameter, fake the default for now */
8918         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8919         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8920         return 0;
8921 }
8922
8923 static int
8924 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
8925 {
8926         struct lpfc_queue *qdesc;
8927         u32 wqesize;
8928         int cpu;
8929
8930         cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
8931         /* Create Fast Path IO CQs */
8932         if (phba->enab_exp_wqcq_pages)
8933                 /* Increase the CQ size when WQEs contain an embedded cdb */
8934                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8935                                               phba->sli4_hba.cq_esize,
8936                                               LPFC_CQE_EXP_COUNT, cpu);
8937
8938         else
8939                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8940                                               phba->sli4_hba.cq_esize,
8941                                               phba->sli4_hba.cq_ecount, cpu);
8942         if (!qdesc) {
8943                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8944                                 "0499 Failed allocate fast-path IO CQ (%d)\n",
8945                                 idx);
8946                 return 1;
8947         }
8948         qdesc->qe_valid = 1;
8949         qdesc->hdwq = idx;
8950         qdesc->chann = cpu;
8951         phba->sli4_hba.hdwq[idx].io_cq = qdesc;
8952
8953         /* Create Fast Path IO WQs */
8954         if (phba->enab_exp_wqcq_pages) {
8955                 /* Increase the WQ size when WQEs contain an embedded cdb */
8956                 wqesize = (phba->fcp_embed_io) ?
8957                         LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
8958                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8959                                               wqesize,
8960                                               LPFC_WQE_EXP_COUNT, cpu);
8961         } else
8962                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8963                                               phba->sli4_hba.wq_esize,
8964                                               phba->sli4_hba.wq_ecount, cpu);
8965
8966         if (!qdesc) {
8967                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8968                                 "0503 Failed allocate fast-path IO WQ (%d)\n",
8969                                 idx);
8970                 return 1;
8971         }
8972         qdesc->hdwq = idx;
8973         qdesc->chann = cpu;
8974         phba->sli4_hba.hdwq[idx].io_wq = qdesc;
8975         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8976         return 0;
8977 }
8978
8979 /**
8980  * lpfc_sli4_queue_create - Create all the SLI4 queues
8981  * @phba: pointer to lpfc hba data structure.
8982  *
8983  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
8984  * operation. For each SLI4 queue type, the parameters such as queue entry
8985  * count (queue depth) shall be taken from the module parameter. For now,
8986  * we just use some constant number as place holder.
8987  *
8988  * Return codes
8989  *      0 - successful
8990  *      -ENOMEM - No availble memory
8991  *      -EIO - The mailbox failed to complete successfully.
8992  **/
8993 int
8994 lpfc_sli4_queue_create(struct lpfc_hba *phba)
8995 {
8996         struct lpfc_queue *qdesc;
8997         int idx, cpu, eqcpu;
8998         struct lpfc_sli4_hdw_queue *qp;
8999         struct lpfc_vector_map_info *cpup;
9000         struct lpfc_vector_map_info *eqcpup;
9001         struct lpfc_eq_intr_info *eqi;
9002
9003         /*
9004          * Create HBA Record arrays.
9005          * Both NVME and FCP will share that same vectors / EQs
9006          */
9007         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
9008         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
9009         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
9010         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
9011         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
9012         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
9013         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
9014         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
9015         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
9016         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
9017
9018         if (!phba->sli4_hba.hdwq) {
9019                 phba->sli4_hba.hdwq = kcalloc(
9020                         phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
9021                         GFP_KERNEL);
9022                 if (!phba->sli4_hba.hdwq) {
9023                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9024                                         "6427 Failed allocate memory for "
9025                                         "fast-path Hardware Queue array\n");
9026                         goto out_error;
9027                 }
9028                 /* Prepare hardware queues to take IO buffers */
9029                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9030                         qp = &phba->sli4_hba.hdwq[idx];
9031                         spin_lock_init(&qp->io_buf_list_get_lock);
9032                         spin_lock_init(&qp->io_buf_list_put_lock);
9033                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
9034                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
9035                         qp->get_io_bufs = 0;
9036                         qp->put_io_bufs = 0;
9037                         qp->total_io_bufs = 0;
9038                         spin_lock_init(&qp->abts_io_buf_list_lock);
9039                         INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
9040                         qp->abts_scsi_io_bufs = 0;
9041                         qp->abts_nvme_io_bufs = 0;
9042                         INIT_LIST_HEAD(&qp->sgl_list);
9043                         INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
9044                         spin_lock_init(&qp->hdwq_lock);
9045                 }
9046         }
9047
9048         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9049                 if (phba->nvmet_support) {
9050                         phba->sli4_hba.nvmet_cqset = kcalloc(
9051                                         phba->cfg_nvmet_mrq,
9052                                         sizeof(struct lpfc_queue *),
9053                                         GFP_KERNEL);
9054                         if (!phba->sli4_hba.nvmet_cqset) {
9055                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9056                                         "3121 Fail allocate memory for "
9057                                         "fast-path CQ set array\n");
9058                                 goto out_error;
9059                         }
9060                         phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
9061                                         phba->cfg_nvmet_mrq,
9062                                         sizeof(struct lpfc_queue *),
9063                                         GFP_KERNEL);
9064                         if (!phba->sli4_hba.nvmet_mrq_hdr) {
9065                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9066                                         "3122 Fail allocate memory for "
9067                                         "fast-path RQ set hdr array\n");
9068                                 goto out_error;
9069                         }
9070                         phba->sli4_hba.nvmet_mrq_data = kcalloc(
9071                                         phba->cfg_nvmet_mrq,
9072                                         sizeof(struct lpfc_queue *),
9073                                         GFP_KERNEL);
9074                         if (!phba->sli4_hba.nvmet_mrq_data) {
9075                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9076                                         "3124 Fail allocate memory for "
9077                                         "fast-path RQ set data array\n");
9078                                 goto out_error;
9079                         }
9080                 }
9081         }
9082
9083         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9084
9085         /* Create HBA Event Queues (EQs) */
9086         for_each_present_cpu(cpu) {
9087                 /* We only want to create 1 EQ per vector, even though
9088                  * multiple CPUs might be using that vector. so only
9089                  * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
9090                  */
9091                 cpup = &phba->sli4_hba.cpu_map[cpu];
9092                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9093                         continue;
9094
9095                 /* Get a ptr to the Hardware Queue associated with this CPU */
9096                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9097
9098                 /* Allocate an EQ */
9099                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9100                                               phba->sli4_hba.eq_esize,
9101                                               phba->sli4_hba.eq_ecount, cpu);
9102                 if (!qdesc) {
9103                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9104                                         "0497 Failed allocate EQ (%d)\n",
9105                                         cpup->hdwq);
9106                         goto out_error;
9107                 }
9108                 qdesc->qe_valid = 1;
9109                 qdesc->hdwq = cpup->hdwq;
9110                 qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
9111                 qdesc->last_cpu = qdesc->chann;
9112
9113                 /* Save the allocated EQ in the Hardware Queue */
9114                 qp->hba_eq = qdesc;
9115
9116                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
9117                 list_add(&qdesc->cpu_list, &eqi->list);
9118         }
9119
9120         /* Now we need to populate the other Hardware Queues, that share
9121          * an IRQ vector, with the associated EQ ptr.
9122          */
9123         for_each_present_cpu(cpu) {
9124                 cpup = &phba->sli4_hba.cpu_map[cpu];
9125
9126                 /* Check for EQ already allocated in previous loop */
9127                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
9128                         continue;
9129
9130                 /* Check for multiple CPUs per hdwq */
9131                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9132                 if (qp->hba_eq)
9133                         continue;
9134
9135                 /* We need to share an EQ for this hdwq */
9136                 eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
9137                 eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
9138                 qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
9139         }
9140
9141         /* Allocate IO Path SLI4 CQ/WQs */
9142         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9143                 if (lpfc_alloc_io_wq_cq(phba, idx))
9144                         goto out_error;
9145         }
9146
9147         if (phba->nvmet_support) {
9148                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9149                         cpu = lpfc_find_cpu_handle(phba, idx,
9150                                                    LPFC_FIND_BY_HDWQ);
9151                         qdesc = lpfc_sli4_queue_alloc(phba,
9152                                                       LPFC_DEFAULT_PAGE_SIZE,
9153                                                       phba->sli4_hba.cq_esize,
9154                                                       phba->sli4_hba.cq_ecount,
9155                                                       cpu);
9156                         if (!qdesc) {
9157                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9158                                                 "3142 Failed allocate NVME "
9159                                                 "CQ Set (%d)\n", idx);
9160                                 goto out_error;
9161                         }
9162                         qdesc->qe_valid = 1;
9163                         qdesc->hdwq = idx;
9164                         qdesc->chann = cpu;
9165                         phba->sli4_hba.nvmet_cqset[idx] = qdesc;
9166                 }
9167         }
9168
9169         /*
9170          * Create Slow Path Completion Queues (CQs)
9171          */
9172
9173         cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
9174         /* Create slow-path Mailbox Command Complete Queue */
9175         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9176                                       phba->sli4_hba.cq_esize,
9177                                       phba->sli4_hba.cq_ecount, cpu);
9178         if (!qdesc) {
9179                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9180                                 "0500 Failed allocate slow-path mailbox CQ\n");
9181                 goto out_error;
9182         }
9183         qdesc->qe_valid = 1;
9184         phba->sli4_hba.mbx_cq = qdesc;
9185
9186         /* Create slow-path ELS Complete Queue */
9187         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9188                                       phba->sli4_hba.cq_esize,
9189                                       phba->sli4_hba.cq_ecount, cpu);
9190         if (!qdesc) {
9191                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9192                                 "0501 Failed allocate slow-path ELS CQ\n");
9193                 goto out_error;
9194         }
9195         qdesc->qe_valid = 1;
9196         qdesc->chann = cpu;
9197         phba->sli4_hba.els_cq = qdesc;
9198
9199
9200         /*
9201          * Create Slow Path Work Queues (WQs)
9202          */
9203
9204         /* Create Mailbox Command Queue */
9205
9206         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9207                                       phba->sli4_hba.mq_esize,
9208                                       phba->sli4_hba.mq_ecount, cpu);
9209         if (!qdesc) {
9210                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9211                                 "0505 Failed allocate slow-path MQ\n");
9212                 goto out_error;
9213         }
9214         qdesc->chann = cpu;
9215         phba->sli4_hba.mbx_wq = qdesc;
9216
9217         /*
9218          * Create ELS Work Queues
9219          */
9220
9221         /* Create slow-path ELS Work Queue */
9222         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9223                                       phba->sli4_hba.wq_esize,
9224                                       phba->sli4_hba.wq_ecount, cpu);
9225         if (!qdesc) {
9226                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9227                                 "0504 Failed allocate slow-path ELS WQ\n");
9228                 goto out_error;
9229         }
9230         qdesc->chann = cpu;
9231         phba->sli4_hba.els_wq = qdesc;
9232         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9233
9234         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9235                 /* Create NVME LS Complete Queue */
9236                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9237                                               phba->sli4_hba.cq_esize,
9238                                               phba->sli4_hba.cq_ecount, cpu);
9239                 if (!qdesc) {
9240                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9241                                         "6079 Failed allocate NVME LS CQ\n");
9242                         goto out_error;
9243                 }
9244                 qdesc->chann = cpu;
9245                 qdesc->qe_valid = 1;
9246                 phba->sli4_hba.nvmels_cq = qdesc;
9247
9248                 /* Create NVME LS Work Queue */
9249                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9250                                               phba->sli4_hba.wq_esize,
9251                                               phba->sli4_hba.wq_ecount, cpu);
9252                 if (!qdesc) {
9253                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9254                                         "6080 Failed allocate NVME LS WQ\n");
9255                         goto out_error;
9256                 }
9257                 qdesc->chann = cpu;
9258                 phba->sli4_hba.nvmels_wq = qdesc;
9259                 list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9260         }
9261
9262         /*
9263          * Create Receive Queue (RQ)
9264          */
9265
9266         /* Create Receive Queue for header */
9267         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9268                                       phba->sli4_hba.rq_esize,
9269                                       phba->sli4_hba.rq_ecount, cpu);
9270         if (!qdesc) {
9271                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9272                                 "0506 Failed allocate receive HRQ\n");
9273                 goto out_error;
9274         }
9275         phba->sli4_hba.hdr_rq = qdesc;
9276
9277         /* Create Receive Queue for data */
9278         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9279                                       phba->sli4_hba.rq_esize,
9280                                       phba->sli4_hba.rq_ecount, cpu);
9281         if (!qdesc) {
9282                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9283                                 "0507 Failed allocate receive DRQ\n");
9284                 goto out_error;
9285         }
9286         phba->sli4_hba.dat_rq = qdesc;
9287
9288         if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
9289             phba->nvmet_support) {
9290                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9291                         cpu = lpfc_find_cpu_handle(phba, idx,
9292                                                    LPFC_FIND_BY_HDWQ);
9293                         /* Create NVMET Receive Queue for header */
9294                         qdesc = lpfc_sli4_queue_alloc(phba,
9295                                                       LPFC_DEFAULT_PAGE_SIZE,
9296                                                       phba->sli4_hba.rq_esize,
9297                                                       LPFC_NVMET_RQE_DEF_COUNT,
9298                                                       cpu);
9299                         if (!qdesc) {
9300                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9301                                                 "3146 Failed allocate "
9302                                                 "receive HRQ\n");
9303                                 goto out_error;
9304                         }
9305                         qdesc->hdwq = idx;
9306                         phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
9307
9308                         /* Only needed for header of RQ pair */
9309                         qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
9310                                                    GFP_KERNEL,
9311                                                    cpu_to_node(cpu));
9312                         if (qdesc->rqbp == NULL) {
9313                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9314                                                 "6131 Failed allocate "
9315                                                 "Header RQBP\n");
9316                                 goto out_error;
9317                         }
9318
9319                         /* Put list in known state in case driver load fails. */
9320                         INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
9321
9322                         /* Create NVMET Receive Queue for data */
9323                         qdesc = lpfc_sli4_queue_alloc(phba,
9324                                                       LPFC_DEFAULT_PAGE_SIZE,
9325                                                       phba->sli4_hba.rq_esize,
9326                                                       LPFC_NVMET_RQE_DEF_COUNT,
9327                                                       cpu);
9328                         if (!qdesc) {
9329                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9330                                                 "3156 Failed allocate "
9331                                                 "receive DRQ\n");
9332                                 goto out_error;
9333                         }
9334                         qdesc->hdwq = idx;
9335                         phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
9336                 }
9337         }
9338
9339         /* Clear NVME stats */
9340         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9341                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9342                         memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
9343                                sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
9344                 }
9345         }
9346
9347         /* Clear SCSI stats */
9348         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
9349                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9350                         memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
9351                                sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
9352                 }
9353         }
9354
9355         return 0;
9356
9357 out_error:
9358         lpfc_sli4_queue_destroy(phba);
9359         return -ENOMEM;
9360 }
9361
9362 static inline void
9363 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
9364 {
9365         if (*qp != NULL) {
9366                 lpfc_sli4_queue_free(*qp);
9367                 *qp = NULL;
9368         }
9369 }
9370
9371 static inline void
9372 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
9373 {
9374         int idx;
9375
9376         if (*qs == NULL)
9377                 return;
9378
9379         for (idx = 0; idx < max; idx++)
9380                 __lpfc_sli4_release_queue(&(*qs)[idx]);
9381
9382         kfree(*qs);
9383         *qs = NULL;
9384 }
9385
9386 static inline void
9387 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
9388 {
9389         struct lpfc_sli4_hdw_queue *hdwq;
9390         struct lpfc_queue *eq;
9391         uint32_t idx;
9392
9393         hdwq = phba->sli4_hba.hdwq;
9394
9395         /* Loop thru all Hardware Queues */
9396         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9397                 /* Free the CQ/WQ corresponding to the Hardware Queue */
9398                 lpfc_sli4_queue_free(hdwq[idx].io_cq);
9399                 lpfc_sli4_queue_free(hdwq[idx].io_wq);
9400                 hdwq[idx].hba_eq = NULL;
9401                 hdwq[idx].io_cq = NULL;
9402                 hdwq[idx].io_wq = NULL;
9403                 if (phba->cfg_xpsgl && !phba->nvmet_support)
9404                         lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
9405                 lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
9406         }
9407         /* Loop thru all IRQ vectors */
9408         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
9409                 /* Free the EQ corresponding to the IRQ vector */
9410                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
9411                 lpfc_sli4_queue_free(eq);
9412                 phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
9413         }
9414 }
9415
9416 /**
9417  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
9418  * @phba: pointer to lpfc hba data structure.
9419  *
9420  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
9421  * operation.
9422  *
9423  * Return codes
9424  *      0 - successful
9425  *      -ENOMEM - No available memory
9426  *      -EIO - The mailbox failed to complete successfully.
9427  **/
9428 void
9429 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
9430 {
9431         /*
9432          * Set FREE_INIT before beginning to free the queues.
9433          * Wait until the users of queues to acknowledge to
9434          * release queues by clearing FREE_WAIT.
9435          */
9436         spin_lock_irq(&phba->hbalock);
9437         phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
9438         while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
9439                 spin_unlock_irq(&phba->hbalock);
9440                 msleep(20);
9441                 spin_lock_irq(&phba->hbalock);
9442         }
9443         spin_unlock_irq(&phba->hbalock);
9444
9445         lpfc_sli4_cleanup_poll_list(phba);
9446
9447         /* Release HBA eqs */
9448         if (phba->sli4_hba.hdwq)
9449                 lpfc_sli4_release_hdwq(phba);
9450
9451         if (phba->nvmet_support) {
9452                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
9453                                          phba->cfg_nvmet_mrq);
9454
9455                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
9456                                          phba->cfg_nvmet_mrq);
9457                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
9458                                          phba->cfg_nvmet_mrq);
9459         }
9460
9461         /* Release mailbox command work queue */
9462         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
9463
9464         /* Release ELS work queue */
9465         __lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
9466
9467         /* Release ELS work queue */
9468         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
9469
9470         /* Release unsolicited receive queue */
9471         __lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
9472         __lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
9473
9474         /* Release ELS complete queue */
9475         __lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
9476
9477         /* Release NVME LS complete queue */
9478         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
9479
9480         /* Release mailbox command complete queue */
9481         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
9482
9483         /* Everything on this list has been freed */
9484         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9485
9486         /* Done with freeing the queues */
9487         spin_lock_irq(&phba->hbalock);
9488         phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
9489         spin_unlock_irq(&phba->hbalock);
9490 }
9491
9492 int
9493 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
9494 {
9495         struct lpfc_rqb *rqbp;
9496         struct lpfc_dmabuf *h_buf;
9497         struct rqb_dmabuf *rqb_buffer;
9498
9499         rqbp = rq->rqbp;
9500         while (!list_empty(&rqbp->rqb_buffer_list)) {
9501                 list_remove_head(&rqbp->rqb_buffer_list, h_buf,
9502                                  struct lpfc_dmabuf, list);
9503
9504                 rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
9505                 (rqbp->rqb_free_buffer)(phba, rqb_buffer);
9506                 rqbp->buffer_count--;
9507         }
9508         return 1;
9509 }
9510
9511 static int
9512 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
9513         struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
9514         int qidx, uint32_t qtype)
9515 {
9516         struct lpfc_sli_ring *pring;
9517         int rc;
9518
9519         if (!eq || !cq || !wq) {
9520                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9521                         "6085 Fast-path %s (%d) not allocated\n",
9522                         ((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
9523                 return -ENOMEM;
9524         }
9525
9526         /* create the Cq first */
9527         rc = lpfc_cq_create(phba, cq, eq,
9528                         (qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
9529         if (rc) {
9530                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9531                                 "6086 Failed setup of CQ (%d), rc = 0x%x\n",
9532                                 qidx, (uint32_t)rc);
9533                 return rc;
9534         }
9535
9536         if (qtype != LPFC_MBOX) {
9537                 /* Setup cq_map for fast lookup */
9538                 if (cq_map)
9539                         *cq_map = cq->queue_id;
9540
9541                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9542                         "6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
9543                         qidx, cq->queue_id, qidx, eq->queue_id);
9544
9545                 /* create the wq */
9546                 rc = lpfc_wq_create(phba, wq, cq, qtype);
9547                 if (rc) {
9548                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9549                                 "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
9550                                 qidx, (uint32_t)rc);
9551                         /* no need to tear down cq - caller will do so */
9552                         return rc;
9553                 }
9554
9555                 /* Bind this CQ/WQ to the NVME ring */
9556                 pring = wq->pring;
9557                 pring->sli.sli4.wqp = (void *)wq;
9558                 cq->pring = pring;
9559
9560                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9561                         "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
9562                         qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
9563         } else {
9564                 rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
9565                 if (rc) {
9566                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9567                                         "0539 Failed setup of slow-path MQ: "
9568                                         "rc = 0x%x\n", rc);
9569                         /* no need to tear down cq - caller will do so */
9570                         return rc;
9571                 }
9572
9573                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9574                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
9575                         phba->sli4_hba.mbx_wq->queue_id,
9576                         phba->sli4_hba.mbx_cq->queue_id);
9577         }
9578
9579         return 0;
9580 }
9581
9582 /**
9583  * lpfc_setup_cq_lookup - Setup the CQ lookup table
9584  * @phba: pointer to lpfc hba data structure.
9585  *
9586  * This routine will populate the cq_lookup table by all
9587  * available CQ queue_id's.
9588  **/
9589 static void
9590 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
9591 {
9592         struct lpfc_queue *eq, *childq;
9593         int qidx;
9594
9595         memset(phba->sli4_hba.cq_lookup, 0,
9596                (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
9597         /* Loop thru all IRQ vectors */
9598         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9599                 /* Get the EQ corresponding to the IRQ vector */
9600                 eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
9601                 if (!eq)
9602                         continue;
9603                 /* Loop through all CQs associated with that EQ */
9604                 list_for_each_entry(childq, &eq->child_list, list) {
9605                         if (childq->queue_id > phba->sli4_hba.cq_max)
9606                                 continue;
9607                         if (childq->subtype == LPFC_IO)
9608                                 phba->sli4_hba.cq_lookup[childq->queue_id] =
9609                                         childq;
9610                 }
9611         }
9612 }
9613
9614 /**
9615  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
9616  * @phba: pointer to lpfc hba data structure.
9617  *
9618  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
9619  * operation.
9620  *
9621  * Return codes
9622  *      0 - successful
9623  *      -ENOMEM - No available memory
9624  *      -EIO - The mailbox failed to complete successfully.
9625  **/
9626 int
9627 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
9628 {
9629         uint32_t shdr_status, shdr_add_status;
9630         union lpfc_sli4_cfg_shdr *shdr;
9631         struct lpfc_vector_map_info *cpup;
9632         struct lpfc_sli4_hdw_queue *qp;
9633         LPFC_MBOXQ_t *mboxq;
9634         int qidx, cpu;
9635         uint32_t length, usdelay;
9636         int rc = -ENOMEM;
9637
9638         /* Check for dual-ULP support */
9639         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9640         if (!mboxq) {
9641                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9642                                 "3249 Unable to allocate memory for "
9643                                 "QUERY_FW_CFG mailbox command\n");
9644                 return -ENOMEM;
9645         }
9646         length = (sizeof(struct lpfc_mbx_query_fw_config) -
9647                   sizeof(struct lpfc_sli4_cfg_mhdr));
9648         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
9649                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
9650                          length, LPFC_SLI4_MBX_EMBED);
9651
9652         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
9653
9654         shdr = (union lpfc_sli4_cfg_shdr *)
9655                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
9656         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9657         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9658         if (shdr_status || shdr_add_status || rc) {
9659                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9660                                 "3250 QUERY_FW_CFG mailbox failed with status "
9661                                 "x%x add_status x%x, mbx status x%x\n",
9662                                 shdr_status, shdr_add_status, rc);
9663                 if (rc != MBX_TIMEOUT)
9664                         mempool_free(mboxq, phba->mbox_mem_pool);
9665                 rc = -ENXIO;
9666                 goto out_error;
9667         }
9668
9669         phba->sli4_hba.fw_func_mode =
9670                         mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
9671         phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
9672         phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
9673         phba->sli4_hba.physical_port =
9674                         mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
9675         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9676                         "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
9677                         "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
9678                         phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
9679
9680         if (rc != MBX_TIMEOUT)
9681                 mempool_free(mboxq, phba->mbox_mem_pool);
9682
9683         /*
9684          * Set up HBA Event Queues (EQs)
9685          */
9686         qp = phba->sli4_hba.hdwq;
9687
9688         /* Set up HBA event queue */
9689         if (!qp) {
9690                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9691                                 "3147 Fast-path EQs not allocated\n");
9692                 rc = -ENOMEM;
9693                 goto out_error;
9694         }
9695
9696         /* Loop thru all IRQ vectors */
9697         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9698                 /* Create HBA Event Queues (EQs) in order */
9699                 for_each_present_cpu(cpu) {
9700                         cpup = &phba->sli4_hba.cpu_map[cpu];
9701
9702                         /* Look for the CPU thats using that vector with
9703                          * LPFC_CPU_FIRST_IRQ set.
9704                          */
9705                         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9706                                 continue;
9707                         if (qidx != cpup->eq)
9708                                 continue;
9709
9710                         /* Create an EQ for that vector */
9711                         rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
9712                                             phba->cfg_fcp_imax);
9713                         if (rc) {
9714                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9715                                                 "0523 Failed setup of fast-path"
9716                                                 " EQ (%d), rc = 0x%x\n",
9717                                                 cpup->eq, (uint32_t)rc);
9718                                 goto out_destroy;
9719                         }
9720
9721                         /* Save the EQ for that vector in the hba_eq_hdl */
9722                         phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
9723                                 qp[cpup->hdwq].hba_eq;
9724
9725                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9726                                         "2584 HBA EQ setup: queue[%d]-id=%d\n",
9727                                         cpup->eq,
9728                                         qp[cpup->hdwq].hba_eq->queue_id);
9729                 }
9730         }
9731
9732         /* Loop thru all Hardware Queues */
9733         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9734                 cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
9735                 cpup = &phba->sli4_hba.cpu_map[cpu];
9736
9737                 /* Create the CQ/WQ corresponding to the Hardware Queue */
9738                 rc = lpfc_create_wq_cq(phba,
9739                                        phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
9740                                        qp[qidx].io_cq,
9741                                        qp[qidx].io_wq,
9742                                        &phba->sli4_hba.hdwq[qidx].io_cq_map,
9743                                        qidx,
9744                                        LPFC_IO);
9745                 if (rc) {
9746                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9747                                         "0535 Failed to setup fastpath "
9748                                         "IO WQ/CQ (%d), rc = 0x%x\n",
9749                                         qidx, (uint32_t)rc);
9750                         goto out_destroy;
9751                 }
9752         }
9753
9754         /*
9755          * Set up Slow Path Complete Queues (CQs)
9756          */
9757
9758         /* Set up slow-path MBOX CQ/MQ */
9759
9760         if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
9761                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9762                                 "0528 %s not allocated\n",
9763                                 phba->sli4_hba.mbx_cq ?
9764                                 "Mailbox WQ" : "Mailbox CQ");
9765                 rc = -ENOMEM;
9766                 goto out_destroy;
9767         }
9768
9769         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9770                                phba->sli4_hba.mbx_cq,
9771                                phba->sli4_hba.mbx_wq,
9772                                NULL, 0, LPFC_MBOX);
9773         if (rc) {
9774                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9775                         "0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
9776                         (uint32_t)rc);
9777                 goto out_destroy;
9778         }
9779         if (phba->nvmet_support) {
9780                 if (!phba->sli4_hba.nvmet_cqset) {
9781                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9782                                         "3165 Fast-path NVME CQ Set "
9783                                         "array not allocated\n");
9784                         rc = -ENOMEM;
9785                         goto out_destroy;
9786                 }
9787                 if (phba->cfg_nvmet_mrq > 1) {
9788                         rc = lpfc_cq_create_set(phba,
9789                                         phba->sli4_hba.nvmet_cqset,
9790                                         qp,
9791                                         LPFC_WCQ, LPFC_NVMET);
9792                         if (rc) {
9793                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9794                                                 "3164 Failed setup of NVME CQ "
9795                                                 "Set, rc = 0x%x\n",
9796                                                 (uint32_t)rc);
9797                                 goto out_destroy;
9798                         }
9799                 } else {
9800                         /* Set up NVMET Receive Complete Queue */
9801                         rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
9802                                             qp[0].hba_eq,
9803                                             LPFC_WCQ, LPFC_NVMET);
9804                         if (rc) {
9805                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9806                                                 "6089 Failed setup NVMET CQ: "
9807                                                 "rc = 0x%x\n", (uint32_t)rc);
9808                                 goto out_destroy;
9809                         }
9810                         phba->sli4_hba.nvmet_cqset[0]->chann = 0;
9811
9812                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9813                                         "6090 NVMET CQ setup: cq-id=%d, "
9814                                         "parent eq-id=%d\n",
9815                                         phba->sli4_hba.nvmet_cqset[0]->queue_id,
9816                                         qp[0].hba_eq->queue_id);
9817                 }
9818         }
9819
9820         /* Set up slow-path ELS WQ/CQ */
9821         if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
9822                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9823                                 "0530 ELS %s not allocated\n",
9824                                 phba->sli4_hba.els_cq ? "WQ" : "CQ");
9825                 rc = -ENOMEM;
9826                 goto out_destroy;
9827         }
9828         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9829                                phba->sli4_hba.els_cq,
9830                                phba->sli4_hba.els_wq,
9831                                NULL, 0, LPFC_ELS);
9832         if (rc) {
9833                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9834                                 "0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
9835                                 (uint32_t)rc);
9836                 goto out_destroy;
9837         }
9838         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9839                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
9840                         phba->sli4_hba.els_wq->queue_id,
9841                         phba->sli4_hba.els_cq->queue_id);
9842
9843         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9844                 /* Set up NVME LS Complete Queue */
9845                 if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
9846                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9847                                         "6091 LS %s not allocated\n",
9848                                         phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
9849                         rc = -ENOMEM;
9850                         goto out_destroy;
9851                 }
9852                 rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9853                                        phba->sli4_hba.nvmels_cq,
9854                                        phba->sli4_hba.nvmels_wq,
9855                                        NULL, 0, LPFC_NVME_LS);
9856                 if (rc) {
9857                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9858                                         "0526 Failed setup of NVVME LS WQ/CQ: "
9859                                         "rc = 0x%x\n", (uint32_t)rc);
9860                         goto out_destroy;
9861                 }
9862
9863                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9864                                 "6096 ELS WQ setup: wq-id=%d, "
9865                                 "parent cq-id=%d\n",
9866                                 phba->sli4_hba.nvmels_wq->queue_id,
9867                                 phba->sli4_hba.nvmels_cq->queue_id);
9868         }
9869
9870         /*
9871          * Create NVMET Receive Queue (RQ)
9872          */
9873         if (phba->nvmet_support) {
9874                 if ((!phba->sli4_hba.nvmet_cqset) ||
9875                     (!phba->sli4_hba.nvmet_mrq_hdr) ||
9876                     (!phba->sli4_hba.nvmet_mrq_data)) {
9877                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9878                                         "6130 MRQ CQ Queues not "
9879                                         "allocated\n");
9880                         rc = -ENOMEM;
9881                         goto out_destroy;
9882                 }
9883                 if (phba->cfg_nvmet_mrq > 1) {
9884                         rc = lpfc_mrq_create(phba,
9885                                              phba->sli4_hba.nvmet_mrq_hdr,
9886                                              phba->sli4_hba.nvmet_mrq_data,
9887                                              phba->sli4_hba.nvmet_cqset,
9888                                              LPFC_NVMET);
9889                         if (rc) {
9890                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9891                                                 "6098 Failed setup of NVMET "
9892                                                 "MRQ: rc = 0x%x\n",
9893                                                 (uint32_t)rc);
9894                                 goto out_destroy;
9895                         }
9896
9897                 } else {
9898                         rc = lpfc_rq_create(phba,
9899                                             phba->sli4_hba.nvmet_mrq_hdr[0],
9900                                             phba->sli4_hba.nvmet_mrq_data[0],
9901                                             phba->sli4_hba.nvmet_cqset[0],
9902                                             LPFC_NVMET);
9903                         if (rc) {
9904                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9905                                                 "6057 Failed setup of NVMET "
9906                                                 "Receive Queue: rc = 0x%x\n",
9907                                                 (uint32_t)rc);
9908                                 goto out_destroy;
9909                         }
9910
9911                         lpfc_printf_log(
9912                                 phba, KERN_INFO, LOG_INIT,
9913                                 "6099 NVMET RQ setup: hdr-rq-id=%d, "
9914                                 "dat-rq-id=%d parent cq-id=%d\n",
9915                                 phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
9916                                 phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
9917                                 phba->sli4_hba.nvmet_cqset[0]->queue_id);
9918
9919                 }
9920         }
9921
9922         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
9923                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9924                                 "0540 Receive Queue not allocated\n");
9925                 rc = -ENOMEM;
9926                 goto out_destroy;
9927         }
9928
9929         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
9930                             phba->sli4_hba.els_cq, LPFC_USOL);
9931         if (rc) {
9932                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9933                                 "0541 Failed setup of Receive Queue: "
9934                                 "rc = 0x%x\n", (uint32_t)rc);
9935                 goto out_destroy;
9936         }
9937
9938         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9939                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
9940                         "parent cq-id=%d\n",
9941                         phba->sli4_hba.hdr_rq->queue_id,
9942                         phba->sli4_hba.dat_rq->queue_id,
9943                         phba->sli4_hba.els_cq->queue_id);
9944
9945         if (phba->cfg_fcp_imax)
9946                 usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
9947         else
9948                 usdelay = 0;
9949
9950         for (qidx = 0; qidx < phba->cfg_irq_chann;
9951              qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
9952                 lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
9953                                          usdelay);
9954
9955         if (phba->sli4_hba.cq_max) {
9956                 kfree(phba->sli4_hba.cq_lookup);
9957                 phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
9958                         sizeof(struct lpfc_queue *), GFP_KERNEL);
9959                 if (!phba->sli4_hba.cq_lookup) {
9960                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9961                                         "0549 Failed setup of CQ Lookup table: "
9962                                         "size 0x%x\n", phba->sli4_hba.cq_max);
9963                         rc = -ENOMEM;
9964                         goto out_destroy;
9965                 }
9966                 lpfc_setup_cq_lookup(phba);
9967         }
9968         return 0;
9969
9970 out_destroy:
9971         lpfc_sli4_queue_unset(phba);
9972 out_error:
9973         return rc;
9974 }
9975
9976 /**
9977  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
9978  * @phba: pointer to lpfc hba data structure.
9979  *
9980  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
9981  * operation.
9982  *
9983  * Return codes
9984  *      0 - successful
9985  *      -ENOMEM - No available memory
9986  *      -EIO - The mailbox failed to complete successfully.
9987  **/
9988 void
9989 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
9990 {
9991         struct lpfc_sli4_hdw_queue *qp;
9992         struct lpfc_queue *eq;
9993         int qidx;
9994
9995         /* Unset mailbox command work queue */
9996         if (phba->sli4_hba.mbx_wq)
9997                 lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
9998
9999         /* Unset NVME LS work queue */
10000         if (phba->sli4_hba.nvmels_wq)
10001                 lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
10002
10003         /* Unset ELS work queue */
10004         if (phba->sli4_hba.els_wq)
10005                 lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
10006
10007         /* Unset unsolicited receive queue */
10008         if (phba->sli4_hba.hdr_rq)
10009                 lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
10010                                 phba->sli4_hba.dat_rq);
10011
10012         /* Unset mailbox command complete queue */
10013         if (phba->sli4_hba.mbx_cq)
10014                 lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
10015
10016         /* Unset ELS complete queue */
10017         if (phba->sli4_hba.els_cq)
10018                 lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
10019
10020         /* Unset NVME LS complete queue */
10021         if (phba->sli4_hba.nvmels_cq)
10022                 lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
10023
10024         if (phba->nvmet_support) {
10025                 /* Unset NVMET MRQ queue */
10026                 if (phba->sli4_hba.nvmet_mrq_hdr) {
10027                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
10028                                 lpfc_rq_destroy(
10029                                         phba,
10030                                         phba->sli4_hba.nvmet_mrq_hdr[qidx],
10031                                         phba->sli4_hba.nvmet_mrq_data[qidx]);
10032                 }
10033
10034                 /* Unset NVMET CQ Set complete queue */
10035                 if (phba->sli4_hba.nvmet_cqset) {
10036                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
10037                                 lpfc_cq_destroy(
10038                                         phba, phba->sli4_hba.nvmet_cqset[qidx]);
10039                 }
10040         }
10041
10042         /* Unset fast-path SLI4 queues */
10043         if (phba->sli4_hba.hdwq) {
10044                 /* Loop thru all Hardware Queues */
10045                 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
10046                         /* Destroy the CQ/WQ corresponding to Hardware Queue */
10047                         qp = &phba->sli4_hba.hdwq[qidx];
10048                         lpfc_wq_destroy(phba, qp->io_wq);
10049                         lpfc_cq_destroy(phba, qp->io_cq);
10050                 }
10051                 /* Loop thru all IRQ vectors */
10052                 for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
10053                         /* Destroy the EQ corresponding to the IRQ vector */
10054                         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
10055                         lpfc_eq_destroy(phba, eq);
10056                 }
10057         }
10058
10059         kfree(phba->sli4_hba.cq_lookup);
10060         phba->sli4_hba.cq_lookup = NULL;
10061         phba->sli4_hba.cq_max = 0;
10062 }
10063
10064 /**
10065  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
10066  * @phba: pointer to lpfc hba data structure.
10067  *
10068  * This routine is invoked to allocate and set up a pool of completion queue
10069  * events. The body of the completion queue event is a completion queue entry
10070  * CQE. For now, this pool is used for the interrupt service routine to queue
10071  * the following HBA completion queue events for the worker thread to process:
10072  *   - Mailbox asynchronous events
10073  *   - Receive queue completion unsolicited events
10074  * Later, this can be used for all the slow-path events.
10075  *
10076  * Return codes
10077  *      0 - successful
10078  *      -ENOMEM - No available memory
10079  **/
10080 static int
10081 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
10082 {
10083         struct lpfc_cq_event *cq_event;
10084         int i;
10085
10086         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
10087                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
10088                 if (!cq_event)
10089                         goto out_pool_create_fail;
10090                 list_add_tail(&cq_event->list,
10091                               &phba->sli4_hba.sp_cqe_event_pool);
10092         }
10093         return 0;
10094
10095 out_pool_create_fail:
10096         lpfc_sli4_cq_event_pool_destroy(phba);
10097         return -ENOMEM;
10098 }
10099
10100 /**
10101  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
10102  * @phba: pointer to lpfc hba data structure.
10103  *
10104  * This routine is invoked to free the pool of completion queue events at
10105  * driver unload time. Note that, it is the responsibility of the driver
10106  * cleanup routine to free all the outstanding completion-queue events
10107  * allocated from this pool back into the pool before invoking this routine
10108  * to destroy the pool.
10109  **/
10110 static void
10111 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
10112 {
10113         struct lpfc_cq_event *cq_event, *next_cq_event;
10114
10115         list_for_each_entry_safe(cq_event, next_cq_event,
10116                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
10117                 list_del(&cq_event->list);
10118                 kfree(cq_event);
10119         }
10120 }
10121
10122 /**
10123  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10124  * @phba: pointer to lpfc hba data structure.
10125  *
10126  * This routine is the lock free version of the API invoked to allocate a
10127  * completion-queue event from the free pool.
10128  *
10129  * Return: Pointer to the newly allocated completion-queue event if successful
10130  *         NULL otherwise.
10131  **/
10132 struct lpfc_cq_event *
10133 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10134 {
10135         struct lpfc_cq_event *cq_event = NULL;
10136
10137         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
10138                          struct lpfc_cq_event, list);
10139         return cq_event;
10140 }
10141
10142 /**
10143  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10144  * @phba: pointer to lpfc hba data structure.
10145  *
10146  * This routine is the lock version of the API invoked to allocate a
10147  * completion-queue event from the free pool.
10148  *
10149  * Return: Pointer to the newly allocated completion-queue event if successful
10150  *         NULL otherwise.
10151  **/
10152 struct lpfc_cq_event *
10153 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10154 {
10155         struct lpfc_cq_event *cq_event;
10156         unsigned long iflags;
10157
10158         spin_lock_irqsave(&phba->hbalock, iflags);
10159         cq_event = __lpfc_sli4_cq_event_alloc(phba);
10160         spin_unlock_irqrestore(&phba->hbalock, iflags);
10161         return cq_event;
10162 }
10163
10164 /**
10165  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10166  * @phba: pointer to lpfc hba data structure.
10167  * @cq_event: pointer to the completion queue event to be freed.
10168  *
10169  * This routine is the lock free version of the API invoked to release a
10170  * completion-queue event back into the free pool.
10171  **/
10172 void
10173 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10174                              struct lpfc_cq_event *cq_event)
10175 {
10176         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
10177 }
10178
10179 /**
10180  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10181  * @phba: pointer to lpfc hba data structure.
10182  * @cq_event: pointer to the completion queue event to be freed.
10183  *
10184  * This routine is the lock version of the API invoked to release a
10185  * completion-queue event back into the free pool.
10186  **/
10187 void
10188 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10189                            struct lpfc_cq_event *cq_event)
10190 {
10191         unsigned long iflags;
10192         spin_lock_irqsave(&phba->hbalock, iflags);
10193         __lpfc_sli4_cq_event_release(phba, cq_event);
10194         spin_unlock_irqrestore(&phba->hbalock, iflags);
10195 }
10196
10197 /**
10198  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
10199  * @phba: pointer to lpfc hba data structure.
10200  *
10201  * This routine is to free all the pending completion-queue events to the
10202  * back into the free pool for device reset.
10203  **/
10204 static void
10205 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
10206 {
10207         LIST_HEAD(cq_event_list);
10208         struct lpfc_cq_event *cq_event;
10209         unsigned long iflags;
10210
10211         /* Retrieve all the pending WCQEs from pending WCQE lists */
10212
10213         /* Pending ELS XRI abort events */
10214         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
10215         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
10216                          &cq_event_list);
10217         spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
10218
10219         /* Pending asynnc events */
10220         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
10221         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
10222                          &cq_event_list);
10223         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
10224
10225         while (!list_empty(&cq_event_list)) {
10226                 list_remove_head(&cq_event_list, cq_event,
10227                                  struct lpfc_cq_event, list);
10228                 lpfc_sli4_cq_event_release(phba, cq_event);
10229         }
10230 }
10231
10232 /**
10233  * lpfc_pci_function_reset - Reset pci function.
10234  * @phba: pointer to lpfc hba data structure.
10235  *
10236  * This routine is invoked to request a PCI function reset. It will destroys
10237  * all resources assigned to the PCI function which originates this request.
10238  *
10239  * Return codes
10240  *      0 - successful
10241  *      -ENOMEM - No available memory
10242  *      -EIO - The mailbox failed to complete successfully.
10243  **/
10244 int
10245 lpfc_pci_function_reset(struct lpfc_hba *phba)
10246 {
10247         LPFC_MBOXQ_t *mboxq;
10248         uint32_t rc = 0, if_type;
10249         uint32_t shdr_status, shdr_add_status;
10250         uint32_t rdy_chk;
10251         uint32_t port_reset = 0;
10252         union lpfc_sli4_cfg_shdr *shdr;
10253         struct lpfc_register reg_data;
10254         uint16_t devid;
10255
10256         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10257         switch (if_type) {
10258         case LPFC_SLI_INTF_IF_TYPE_0:
10259                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
10260                                                        GFP_KERNEL);
10261                 if (!mboxq) {
10262                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10263                                         "0494 Unable to allocate memory for "
10264                                         "issuing SLI_FUNCTION_RESET mailbox "
10265                                         "command\n");
10266                         return -ENOMEM;
10267                 }
10268
10269                 /* Setup PCI function reset mailbox-ioctl command */
10270                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
10271                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
10272                                  LPFC_SLI4_MBX_EMBED);
10273                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10274                 shdr = (union lpfc_sli4_cfg_shdr *)
10275                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
10276                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10277                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
10278                                          &shdr->response);
10279                 if (rc != MBX_TIMEOUT)
10280                         mempool_free(mboxq, phba->mbox_mem_pool);
10281                 if (shdr_status || shdr_add_status || rc) {
10282                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10283                                         "0495 SLI_FUNCTION_RESET mailbox "
10284                                         "failed with status x%x add_status x%x,"
10285                                         " mbx status x%x\n",
10286                                         shdr_status, shdr_add_status, rc);
10287                         rc = -ENXIO;
10288                 }
10289                 break;
10290         case LPFC_SLI_INTF_IF_TYPE_2:
10291         case LPFC_SLI_INTF_IF_TYPE_6:
10292 wait:
10293                 /*
10294                  * Poll the Port Status Register and wait for RDY for
10295                  * up to 30 seconds. If the port doesn't respond, treat
10296                  * it as an error.
10297                  */
10298                 for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
10299                         if (lpfc_readl(phba->sli4_hba.u.if_type2.
10300                                 STATUSregaddr, &reg_data.word0)) {
10301                                 rc = -ENODEV;
10302                                 goto out;
10303                         }
10304                         if (bf_get(lpfc_sliport_status_rdy, &reg_data))
10305                                 break;
10306                         msleep(20);
10307                 }
10308
10309                 if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
10310                         phba->work_status[0] = readl(
10311                                 phba->sli4_hba.u.if_type2.ERR1regaddr);
10312                         phba->work_status[1] = readl(
10313                                 phba->sli4_hba.u.if_type2.ERR2regaddr);
10314                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10315                                         "2890 Port not ready, port status reg "
10316                                         "0x%x error 1=0x%x, error 2=0x%x\n",
10317                                         reg_data.word0,
10318                                         phba->work_status[0],
10319                                         phba->work_status[1]);
10320                         rc = -ENODEV;
10321                         goto out;
10322                 }
10323
10324                 if (!port_reset) {
10325                         /*
10326                          * Reset the port now
10327                          */
10328                         reg_data.word0 = 0;
10329                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
10330                                LPFC_SLIPORT_LITTLE_ENDIAN);
10331                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
10332                                LPFC_SLIPORT_INIT_PORT);
10333                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
10334                                CTRLregaddr);
10335                         /* flush */
10336                         pci_read_config_word(phba->pcidev,
10337                                              PCI_DEVICE_ID, &devid);
10338
10339                         port_reset = 1;
10340                         msleep(20);
10341                         goto wait;
10342                 } else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
10343                         rc = -ENODEV;
10344                         goto out;
10345                 }
10346                 break;
10347
10348         case LPFC_SLI_INTF_IF_TYPE_1:
10349         default:
10350                 break;
10351         }
10352
10353 out:
10354         /* Catch the not-ready port failure after a port reset. */
10355         if (rc) {
10356                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10357                                 "3317 HBA not functional: IP Reset Failed "
10358                                 "try: echo fw_reset > board_mode\n");
10359                 rc = -ENODEV;
10360         }
10361
10362         return rc;
10363 }
10364
10365 /**
10366  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
10367  * @phba: pointer to lpfc hba data structure.
10368  *
10369  * This routine is invoked to set up the PCI device memory space for device
10370  * with SLI-4 interface spec.
10371  *
10372  * Return codes
10373  *      0 - successful
10374  *      other values - error
10375  **/
10376 static int
10377 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
10378 {
10379         struct pci_dev *pdev = phba->pcidev;
10380         unsigned long bar0map_len, bar1map_len, bar2map_len;
10381         int error;
10382         uint32_t if_type;
10383
10384         if (!pdev)
10385                 return -ENODEV;
10386
10387         /* Set the device DMA mask size */
10388         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10389         if (error)
10390                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10391         if (error)
10392                 return error;
10393
10394         /*
10395          * The BARs and register set definitions and offset locations are
10396          * dependent on the if_type.
10397          */
10398         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
10399                                   &phba->sli4_hba.sli_intf.word0)) {
10400                 return -ENODEV;
10401         }
10402
10403         /* There is no SLI3 failback for SLI4 devices. */
10404         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
10405             LPFC_SLI_INTF_VALID) {
10406                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10407                                 "2894 SLI_INTF reg contents invalid "
10408                                 "sli_intf reg 0x%x\n",
10409                                 phba->sli4_hba.sli_intf.word0);
10410                 return -ENODEV;
10411         }
10412
10413         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10414         /*
10415          * Get the bus address of SLI4 device Bar regions and the
10416          * number of bytes required by each mapping. The mapping of the
10417          * particular PCI BARs regions is dependent on the type of
10418          * SLI4 device.
10419          */
10420         if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
10421                 phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
10422                 bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
10423
10424                 /*
10425                  * Map SLI4 PCI Config Space Register base to a kernel virtual
10426                  * addr
10427                  */
10428                 phba->sli4_hba.conf_regs_memmap_p =
10429                         ioremap(phba->pci_bar0_map, bar0map_len);
10430                 if (!phba->sli4_hba.conf_regs_memmap_p) {
10431                         dev_printk(KERN_ERR, &pdev->dev,
10432                                    "ioremap failed for SLI4 PCI config "
10433                                    "registers.\n");
10434                         return -ENODEV;
10435                 }
10436                 phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
10437                 /* Set up BAR0 PCI config space register memory map */
10438                 lpfc_sli4_bar0_register_memmap(phba, if_type);
10439         } else {
10440                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
10441                 bar0map_len = pci_resource_len(pdev, 1);
10442                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
10443                         dev_printk(KERN_ERR, &pdev->dev,
10444                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
10445                         return -ENODEV;
10446                 }
10447                 phba->sli4_hba.conf_regs_memmap_p =
10448                                 ioremap(phba->pci_bar0_map, bar0map_len);
10449                 if (!phba->sli4_hba.conf_regs_memmap_p) {
10450                         dev_printk(KERN_ERR, &pdev->dev,
10451                                 "ioremap failed for SLI4 PCI config "
10452                                 "registers.\n");
10453                         return -ENODEV;
10454                 }
10455                 lpfc_sli4_bar0_register_memmap(phba, if_type);
10456         }
10457
10458         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10459                 if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
10460                         /*
10461                          * Map SLI4 if type 0 HBA Control Register base to a
10462                          * kernel virtual address and setup the registers.
10463                          */
10464                         phba->pci_bar1_map = pci_resource_start(pdev,
10465                                                                 PCI_64BIT_BAR2);
10466                         bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10467                         phba->sli4_hba.ctrl_regs_memmap_p =
10468                                         ioremap(phba->pci_bar1_map,
10469                                                 bar1map_len);
10470                         if (!phba->sli4_hba.ctrl_regs_memmap_p) {
10471                                 dev_err(&pdev->dev,
10472                                            "ioremap failed for SLI4 HBA "
10473                                             "control registers.\n");
10474                                 error = -ENOMEM;
10475                                 goto out_iounmap_conf;
10476                         }
10477                         phba->pci_bar2_memmap_p =
10478                                          phba->sli4_hba.ctrl_regs_memmap_p;
10479                         lpfc_sli4_bar1_register_memmap(phba, if_type);
10480                 } else {
10481                         error = -ENOMEM;
10482                         goto out_iounmap_conf;
10483                 }
10484         }
10485
10486         if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
10487             (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
10488                 /*
10489                  * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
10490                  * virtual address and setup the registers.
10491                  */
10492                 phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
10493                 bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10494                 phba->sli4_hba.drbl_regs_memmap_p =
10495                                 ioremap(phba->pci_bar1_map, bar1map_len);
10496                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
10497                         dev_err(&pdev->dev,
10498                            "ioremap failed for SLI4 HBA doorbell registers.\n");
10499                         error = -ENOMEM;
10500                         goto out_iounmap_conf;
10501                 }
10502                 phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
10503                 lpfc_sli4_bar1_register_memmap(phba, if_type);
10504         }
10505
10506         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10507                 if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10508                         /*
10509                          * Map SLI4 if type 0 HBA Doorbell Register base to
10510                          * a kernel virtual address and setup the registers.
10511                          */
10512                         phba->pci_bar2_map = pci_resource_start(pdev,
10513                                                                 PCI_64BIT_BAR4);
10514                         bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10515                         phba->sli4_hba.drbl_regs_memmap_p =
10516                                         ioremap(phba->pci_bar2_map,
10517                                                 bar2map_len);
10518                         if (!phba->sli4_hba.drbl_regs_memmap_p) {
10519                                 dev_err(&pdev->dev,
10520                                            "ioremap failed for SLI4 HBA"
10521                                            " doorbell registers.\n");
10522                                 error = -ENOMEM;
10523                                 goto out_iounmap_ctrl;
10524                         }
10525                         phba->pci_bar4_memmap_p =
10526                                         phba->sli4_hba.drbl_regs_memmap_p;
10527                         error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
10528                         if (error)
10529                                 goto out_iounmap_all;
10530                 } else {
10531                         error = -ENOMEM;
10532                         goto out_iounmap_all;
10533                 }
10534         }
10535
10536         if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
10537             pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10538                 /*
10539                  * Map SLI4 if type 6 HBA DPP Register base to a kernel
10540                  * virtual address and setup the registers.
10541                  */
10542                 phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
10543                 bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10544                 phba->sli4_hba.dpp_regs_memmap_p =
10545                                 ioremap(phba->pci_bar2_map, bar2map_len);
10546                 if (!phba->sli4_hba.dpp_regs_memmap_p) {
10547                         dev_err(&pdev->dev,
10548                            "ioremap failed for SLI4 HBA dpp registers.\n");
10549                         error = -ENOMEM;
10550                         goto out_iounmap_ctrl;
10551                 }
10552                 phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
10553         }
10554
10555         /* Set up the EQ/CQ register handeling functions now */
10556         switch (if_type) {
10557         case LPFC_SLI_INTF_IF_TYPE_0:
10558         case LPFC_SLI_INTF_IF_TYPE_2:
10559                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
10560                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
10561                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
10562                 break;
10563         case LPFC_SLI_INTF_IF_TYPE_6:
10564                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
10565                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
10566                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
10567                 break;
10568         default:
10569                 break;
10570         }
10571
10572         return 0;
10573
10574 out_iounmap_all:
10575         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10576 out_iounmap_ctrl:
10577         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10578 out_iounmap_conf:
10579         iounmap(phba->sli4_hba.conf_regs_memmap_p);
10580
10581         return error;
10582 }
10583
10584 /**
10585  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
10586  * @phba: pointer to lpfc hba data structure.
10587  *
10588  * This routine is invoked to unset the PCI device memory space for device
10589  * with SLI-4 interface spec.
10590  **/
10591 static void
10592 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
10593 {
10594         uint32_t if_type;
10595         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10596
10597         switch (if_type) {
10598         case LPFC_SLI_INTF_IF_TYPE_0:
10599                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10600                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10601                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10602                 break;
10603         case LPFC_SLI_INTF_IF_TYPE_2:
10604                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10605                 break;
10606         case LPFC_SLI_INTF_IF_TYPE_6:
10607                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10608                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10609                 if (phba->sli4_hba.dpp_regs_memmap_p)
10610                         iounmap(phba->sli4_hba.dpp_regs_memmap_p);
10611                 break;
10612         case LPFC_SLI_INTF_IF_TYPE_1:
10613         default:
10614                 dev_printk(KERN_ERR, &phba->pcidev->dev,
10615                            "FATAL - unsupported SLI4 interface type - %d\n",
10616                            if_type);
10617                 break;
10618         }
10619 }
10620
10621 /**
10622  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
10623  * @phba: pointer to lpfc hba data structure.
10624  *
10625  * This routine is invoked to enable the MSI-X interrupt vectors to device
10626  * with SLI-3 interface specs.
10627  *
10628  * Return codes
10629  *   0 - successful
10630  *   other values - error
10631  **/
10632 static int
10633 lpfc_sli_enable_msix(struct lpfc_hba *phba)
10634 {
10635         int rc;
10636         LPFC_MBOXQ_t *pmb;
10637
10638         /* Set up MSI-X multi-message vectors */
10639         rc = pci_alloc_irq_vectors(phba->pcidev,
10640                         LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
10641         if (rc < 0) {
10642                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10643                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
10644                 goto vec_fail_out;
10645         }
10646
10647         /*
10648          * Assign MSI-X vectors to interrupt handlers
10649          */
10650
10651         /* vector-0 is associated to slow-path handler */
10652         rc = request_irq(pci_irq_vector(phba->pcidev, 0),
10653                          &lpfc_sli_sp_intr_handler, 0,
10654                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
10655         if (rc) {
10656                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10657                                 "0421 MSI-X slow-path request_irq failed "
10658                                 "(%d)\n", rc);
10659                 goto msi_fail_out;
10660         }
10661
10662         /* vector-1 is associated to fast-path handler */
10663         rc = request_irq(pci_irq_vector(phba->pcidev, 1),
10664                          &lpfc_sli_fp_intr_handler, 0,
10665                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
10666
10667         if (rc) {
10668                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10669                                 "0429 MSI-X fast-path request_irq failed "
10670                                 "(%d)\n", rc);
10671                 goto irq_fail_out;
10672         }
10673
10674         /*
10675          * Configure HBA MSI-X attention conditions to messages
10676          */
10677         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10678
10679         if (!pmb) {
10680                 rc = -ENOMEM;
10681                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10682                                 "0474 Unable to allocate memory for issuing "
10683                                 "MBOX_CONFIG_MSI command\n");
10684                 goto mem_fail_out;
10685         }
10686         rc = lpfc_config_msi(phba, pmb);
10687         if (rc)
10688                 goto mbx_fail_out;
10689         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
10690         if (rc != MBX_SUCCESS) {
10691                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
10692                                 "0351 Config MSI mailbox command failed, "
10693                                 "mbxCmd x%x, mbxStatus x%x\n",
10694                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
10695                 goto mbx_fail_out;
10696         }
10697
10698         /* Free memory allocated for mailbox command */
10699         mempool_free(pmb, phba->mbox_mem_pool);
10700         return rc;
10701
10702 mbx_fail_out:
10703         /* Free memory allocated for mailbox command */
10704         mempool_free(pmb, phba->mbox_mem_pool);
10705
10706 mem_fail_out:
10707         /* free the irq already requested */
10708         free_irq(pci_irq_vector(phba->pcidev, 1), phba);
10709
10710 irq_fail_out:
10711         /* free the irq already requested */
10712         free_irq(pci_irq_vector(phba->pcidev, 0), phba);
10713
10714 msi_fail_out:
10715         /* Unconfigure MSI-X capability structure */
10716         pci_free_irq_vectors(phba->pcidev);
10717
10718 vec_fail_out:
10719         return rc;
10720 }
10721
10722 /**
10723  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
10724  * @phba: pointer to lpfc hba data structure.
10725  *
10726  * This routine is invoked to enable the MSI interrupt mode to device with
10727  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
10728  * enable the MSI vector. The device driver is responsible for calling the
10729  * request_irq() to register MSI vector with a interrupt the handler, which
10730  * is done in this function.
10731  *
10732  * Return codes
10733  *      0 - successful
10734  *      other values - error
10735  */
10736 static int
10737 lpfc_sli_enable_msi(struct lpfc_hba *phba)
10738 {
10739         int rc;
10740
10741         rc = pci_enable_msi(phba->pcidev);
10742         if (!rc)
10743                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10744                                 "0462 PCI enable MSI mode success.\n");
10745         else {
10746                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10747                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
10748                 return rc;
10749         }
10750
10751         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10752                          0, LPFC_DRIVER_NAME, phba);
10753         if (rc) {
10754                 pci_disable_msi(phba->pcidev);
10755                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10756                                 "0478 MSI request_irq failed (%d)\n", rc);
10757         }
10758         return rc;
10759 }
10760
10761 /**
10762  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
10763  * @phba: pointer to lpfc hba data structure.
10764  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
10765  *
10766  * This routine is invoked to enable device interrupt and associate driver's
10767  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
10768  * spec. Depends on the interrupt mode configured to the driver, the driver
10769  * will try to fallback from the configured interrupt mode to an interrupt
10770  * mode which is supported by the platform, kernel, and device in the order
10771  * of:
10772  * MSI-X -> MSI -> IRQ.
10773  *
10774  * Return codes
10775  *   0 - successful
10776  *   other values - error
10777  **/
10778 static uint32_t
10779 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
10780 {
10781         uint32_t intr_mode = LPFC_INTR_ERROR;
10782         int retval;
10783
10784         /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
10785         retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
10786         if (retval)
10787                 return intr_mode;
10788         phba->hba_flag &= ~HBA_NEEDS_CFG_PORT;
10789
10790         if (cfg_mode == 2) {
10791                 /* Now, try to enable MSI-X interrupt mode */
10792                 retval = lpfc_sli_enable_msix(phba);
10793                 if (!retval) {
10794                         /* Indicate initialization to MSI-X mode */
10795                         phba->intr_type = MSIX;
10796                         intr_mode = 2;
10797                 }
10798         }
10799
10800         /* Fallback to MSI if MSI-X initialization failed */
10801         if (cfg_mode >= 1 && phba->intr_type == NONE) {
10802                 retval = lpfc_sli_enable_msi(phba);
10803                 if (!retval) {
10804                         /* Indicate initialization to MSI mode */
10805                         phba->intr_type = MSI;
10806                         intr_mode = 1;
10807                 }
10808         }
10809
10810         /* Fallback to INTx if both MSI-X/MSI initalization failed */
10811         if (phba->intr_type == NONE) {
10812                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10813                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
10814                 if (!retval) {
10815                         /* Indicate initialization to INTx mode */
10816                         phba->intr_type = INTx;
10817                         intr_mode = 0;
10818                 }
10819         }
10820         return intr_mode;
10821 }
10822
10823 /**
10824  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
10825  * @phba: pointer to lpfc hba data structure.
10826  *
10827  * This routine is invoked to disable device interrupt and disassociate the
10828  * driver's interrupt handler(s) from interrupt vector(s) to device with
10829  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
10830  * release the interrupt vector(s) for the message signaled interrupt.
10831  **/
10832 static void
10833 lpfc_sli_disable_intr(struct lpfc_hba *phba)
10834 {
10835         int nr_irqs, i;
10836
10837         if (phba->intr_type == MSIX)
10838                 nr_irqs = LPFC_MSIX_VECTORS;
10839         else
10840                 nr_irqs = 1;
10841
10842         for (i = 0; i < nr_irqs; i++)
10843                 free_irq(pci_irq_vector(phba->pcidev, i), phba);
10844         pci_free_irq_vectors(phba->pcidev);
10845
10846         /* Reset interrupt management states */
10847         phba->intr_type = NONE;
10848         phba->sli.slistat.sli_intr = 0;
10849 }
10850
10851 /**
10852  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
10853  * @phba: pointer to lpfc hba data structure.
10854  * @id: EQ vector index or Hardware Queue index
10855  * @match: LPFC_FIND_BY_EQ = match by EQ
10856  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
10857  * Return the CPU that matches the selection criteria
10858  */
10859 static uint16_t
10860 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
10861 {
10862         struct lpfc_vector_map_info *cpup;
10863         int cpu;
10864
10865         /* Loop through all CPUs */
10866         for_each_present_cpu(cpu) {
10867                 cpup = &phba->sli4_hba.cpu_map[cpu];
10868
10869                 /* If we are matching by EQ, there may be multiple CPUs using
10870                  * using the same vector, so select the one with
10871                  * LPFC_CPU_FIRST_IRQ set.
10872                  */
10873                 if ((match == LPFC_FIND_BY_EQ) &&
10874                     (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
10875                     (cpup->eq == id))
10876                         return cpu;
10877
10878                 /* If matching by HDWQ, select the first CPU that matches */
10879                 if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
10880                         return cpu;
10881         }
10882         return 0;
10883 }
10884
10885 #ifdef CONFIG_X86
10886 /**
10887  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
10888  * @phba: pointer to lpfc hba data structure.
10889  * @cpu: CPU map index
10890  * @phys_id: CPU package physical id
10891  * @core_id: CPU core id
10892  */
10893 static int
10894 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
10895                 uint16_t phys_id, uint16_t core_id)
10896 {
10897         struct lpfc_vector_map_info *cpup;
10898         int idx;
10899
10900         for_each_present_cpu(idx) {
10901                 cpup = &phba->sli4_hba.cpu_map[idx];
10902                 /* Does the cpup match the one we are looking for */
10903                 if ((cpup->phys_id == phys_id) &&
10904                     (cpup->core_id == core_id) &&
10905                     (cpu != idx))
10906                         return 1;
10907         }
10908         return 0;
10909 }
10910 #endif
10911
10912 /*
10913  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
10914  * @phba: pointer to lpfc hba data structure.
10915  * @eqidx: index for eq and irq vector
10916  * @flag: flags to set for vector_map structure
10917  * @cpu: cpu used to index vector_map structure
10918  *
10919  * The routine assigns eq info into vector_map structure
10920  */
10921 static inline void
10922 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
10923                         unsigned int cpu)
10924 {
10925         struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
10926         struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
10927
10928         cpup->eq = eqidx;
10929         cpup->flag |= flag;
10930
10931         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10932                         "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
10933                         cpu, eqhdl->irq, cpup->eq, cpup->flag);
10934 }
10935
10936 /**
10937  * lpfc_cpu_map_array_init - Initialize cpu_map structure
10938  * @phba: pointer to lpfc hba data structure.
10939  *
10940  * The routine initializes the cpu_map array structure
10941  */
10942 static void
10943 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
10944 {
10945         struct lpfc_vector_map_info *cpup;
10946         struct lpfc_eq_intr_info *eqi;
10947         int cpu;
10948
10949         for_each_possible_cpu(cpu) {
10950                 cpup = &phba->sli4_hba.cpu_map[cpu];
10951                 cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
10952                 cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
10953                 cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
10954                 cpup->eq = LPFC_VECTOR_MAP_EMPTY;
10955                 cpup->flag = 0;
10956                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
10957                 INIT_LIST_HEAD(&eqi->list);
10958                 eqi->icnt = 0;
10959         }
10960 }
10961
10962 /**
10963  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
10964  * @phba: pointer to lpfc hba data structure.
10965  *
10966  * The routine initializes the hba_eq_hdl array structure
10967  */
10968 static void
10969 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
10970 {
10971         struct lpfc_hba_eq_hdl *eqhdl;
10972         int i;
10973
10974         for (i = 0; i < phba->cfg_irq_chann; i++) {
10975                 eqhdl = lpfc_get_eq_hdl(i);
10976                 eqhdl->irq = LPFC_VECTOR_MAP_EMPTY;
10977                 eqhdl->phba = phba;
10978         }
10979 }
10980
10981 /**
10982  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
10983  * @phba: pointer to lpfc hba data structure.
10984  * @vectors: number of msix vectors allocated.
10985  *
10986  * The routine will figure out the CPU affinity assignment for every
10987  * MSI-X vector allocated for the HBA.
10988  * In addition, the CPU to IO channel mapping will be calculated
10989  * and the phba->sli4_hba.cpu_map array will reflect this.
10990  */
10991 static void
10992 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
10993 {
10994         int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
10995         int max_phys_id, min_phys_id;
10996         int max_core_id, min_core_id;
10997         struct lpfc_vector_map_info *cpup;
10998         struct lpfc_vector_map_info *new_cpup;
10999 #ifdef CONFIG_X86
11000         struct cpuinfo_x86 *cpuinfo;
11001 #endif
11002 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11003         struct lpfc_hdwq_stat *c_stat;
11004 #endif
11005
11006         max_phys_id = 0;
11007         min_phys_id = LPFC_VECTOR_MAP_EMPTY;
11008         max_core_id = 0;
11009         min_core_id = LPFC_VECTOR_MAP_EMPTY;
11010
11011         /* Update CPU map with physical id and core id of each CPU */
11012         for_each_present_cpu(cpu) {
11013                 cpup = &phba->sli4_hba.cpu_map[cpu];
11014 #ifdef CONFIG_X86
11015                 cpuinfo = &cpu_data(cpu);
11016                 cpup->phys_id = cpuinfo->phys_proc_id;
11017                 cpup->core_id = cpuinfo->cpu_core_id;
11018                 if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
11019                         cpup->flag |= LPFC_CPU_MAP_HYPER;
11020 #else
11021                 /* No distinction between CPUs for other platforms */
11022                 cpup->phys_id = 0;
11023                 cpup->core_id = cpu;
11024 #endif
11025
11026                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11027                                 "3328 CPU %d physid %d coreid %d flag x%x\n",
11028                                 cpu, cpup->phys_id, cpup->core_id, cpup->flag);
11029
11030                 if (cpup->phys_id > max_phys_id)
11031                         max_phys_id = cpup->phys_id;
11032                 if (cpup->phys_id < min_phys_id)
11033                         min_phys_id = cpup->phys_id;
11034
11035                 if (cpup->core_id > max_core_id)
11036                         max_core_id = cpup->core_id;
11037                 if (cpup->core_id < min_core_id)
11038                         min_core_id = cpup->core_id;
11039         }
11040
11041         /* After looking at each irq vector assigned to this pcidev, its
11042          * possible to see that not ALL CPUs have been accounted for.
11043          * Next we will set any unassigned (unaffinitized) cpu map
11044          * entries to a IRQ on the same phys_id.
11045          */
11046         first_cpu = cpumask_first(cpu_present_mask);
11047         start_cpu = first_cpu;
11048
11049         for_each_present_cpu(cpu) {
11050                 cpup = &phba->sli4_hba.cpu_map[cpu];
11051
11052                 /* Is this CPU entry unassigned */
11053                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11054                         /* Mark CPU as IRQ not assigned by the kernel */
11055                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11056
11057                         /* If so, find a new_cpup thats on the the SAME
11058                          * phys_id as cpup. start_cpu will start where we
11059                          * left off so all unassigned entries don't get assgined
11060                          * the IRQ of the first entry.
11061                          */
11062                         new_cpu = start_cpu;
11063                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11064                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11065                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11066                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
11067                                     (new_cpup->phys_id == cpup->phys_id))
11068                                         goto found_same;
11069                                 new_cpu = cpumask_next(
11070                                         new_cpu, cpu_present_mask);
11071                                 if (new_cpu == nr_cpumask_bits)
11072                                         new_cpu = first_cpu;
11073                         }
11074                         /* At this point, we leave the CPU as unassigned */
11075                         continue;
11076 found_same:
11077                         /* We found a matching phys_id, so copy the IRQ info */
11078                         cpup->eq = new_cpup->eq;
11079
11080                         /* Bump start_cpu to the next slot to minmize the
11081                          * chance of having multiple unassigned CPU entries
11082                          * selecting the same IRQ.
11083                          */
11084                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11085                         if (start_cpu == nr_cpumask_bits)
11086                                 start_cpu = first_cpu;
11087
11088                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11089                                         "3337 Set Affinity: CPU %d "
11090                                         "eq %d from peer cpu %d same "
11091                                         "phys_id (%d)\n",
11092                                         cpu, cpup->eq, new_cpu,
11093                                         cpup->phys_id);
11094                 }
11095         }
11096
11097         /* Set any unassigned cpu map entries to a IRQ on any phys_id */
11098         start_cpu = first_cpu;
11099
11100         for_each_present_cpu(cpu) {
11101                 cpup = &phba->sli4_hba.cpu_map[cpu];
11102
11103                 /* Is this entry unassigned */
11104                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11105                         /* Mark it as IRQ not assigned by the kernel */
11106                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11107
11108                         /* If so, find a new_cpup thats on ANY phys_id
11109                          * as the cpup. start_cpu will start where we
11110                          * left off so all unassigned entries don't get
11111                          * assigned the IRQ of the first entry.
11112                          */
11113                         new_cpu = start_cpu;
11114                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11115                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11116                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11117                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
11118                                         goto found_any;
11119                                 new_cpu = cpumask_next(
11120                                         new_cpu, cpu_present_mask);
11121                                 if (new_cpu == nr_cpumask_bits)
11122                                         new_cpu = first_cpu;
11123                         }
11124                         /* We should never leave an entry unassigned */
11125                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11126                                         "3339 Set Affinity: CPU %d "
11127                                         "eq %d UNASSIGNED\n",
11128                                         cpup->hdwq, cpup->eq);
11129                         continue;
11130 found_any:
11131                         /* We found an available entry, copy the IRQ info */
11132                         cpup->eq = new_cpup->eq;
11133
11134                         /* Bump start_cpu to the next slot to minmize the
11135                          * chance of having multiple unassigned CPU entries
11136                          * selecting the same IRQ.
11137                          */
11138                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11139                         if (start_cpu == nr_cpumask_bits)
11140                                 start_cpu = first_cpu;
11141
11142                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11143                                         "3338 Set Affinity: CPU %d "
11144                                         "eq %d from peer cpu %d (%d/%d)\n",
11145                                         cpu, cpup->eq, new_cpu,
11146                                         new_cpup->phys_id, new_cpup->core_id);
11147                 }
11148         }
11149
11150         /* Assign hdwq indices that are unique across all cpus in the map
11151          * that are also FIRST_CPUs.
11152          */
11153         idx = 0;
11154         for_each_present_cpu(cpu) {
11155                 cpup = &phba->sli4_hba.cpu_map[cpu];
11156
11157                 /* Only FIRST IRQs get a hdwq index assignment. */
11158                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11159                         continue;
11160
11161                 /* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
11162                 cpup->hdwq = idx;
11163                 idx++;
11164                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11165                                 "3333 Set Affinity: CPU %d (phys %d core %d): "
11166                                 "hdwq %d eq %d flg x%x\n",
11167                                 cpu, cpup->phys_id, cpup->core_id,
11168                                 cpup->hdwq, cpup->eq, cpup->flag);
11169         }
11170         /* Associate a hdwq with each cpu_map entry
11171          * This will be 1 to 1 - hdwq to cpu, unless there are less
11172          * hardware queues then CPUs. For that case we will just round-robin
11173          * the available hardware queues as they get assigned to CPUs.
11174          * The next_idx is the idx from the FIRST_CPU loop above to account
11175          * for irq_chann < hdwq.  The idx is used for round-robin assignments
11176          * and needs to start at 0.
11177          */
11178         next_idx = idx;
11179         start_cpu = 0;
11180         idx = 0;
11181         for_each_present_cpu(cpu) {
11182                 cpup = &phba->sli4_hba.cpu_map[cpu];
11183
11184                 /* FIRST cpus are already mapped. */
11185                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
11186                         continue;
11187
11188                 /* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
11189                  * of the unassigned cpus to the next idx so that all
11190                  * hdw queues are fully utilized.
11191                  */
11192                 if (next_idx < phba->cfg_hdw_queue) {
11193                         cpup->hdwq = next_idx;
11194                         next_idx++;
11195                         continue;
11196                 }
11197
11198                 /* Not a First CPU and all hdw_queues are used.  Reuse a
11199                  * Hardware Queue for another CPU, so be smart about it
11200                  * and pick one that has its IRQ/EQ mapped to the same phys_id
11201                  * (CPU package) and core_id.
11202                  */
11203                 new_cpu = start_cpu;
11204                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11205                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11206                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11207                             new_cpup->phys_id == cpup->phys_id &&
11208                             new_cpup->core_id == cpup->core_id) {
11209                                 goto found_hdwq;
11210                         }
11211                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11212                         if (new_cpu == nr_cpumask_bits)
11213                                 new_cpu = first_cpu;
11214                 }
11215
11216                 /* If we can't match both phys_id and core_id,
11217                  * settle for just a phys_id match.
11218                  */
11219                 new_cpu = start_cpu;
11220                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11221                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11222                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11223                             new_cpup->phys_id == cpup->phys_id)
11224                                 goto found_hdwq;
11225
11226                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11227                         if (new_cpu == nr_cpumask_bits)
11228                                 new_cpu = first_cpu;
11229                 }
11230
11231                 /* Otherwise just round robin on cfg_hdw_queue */
11232                 cpup->hdwq = idx % phba->cfg_hdw_queue;
11233                 idx++;
11234                 goto logit;
11235  found_hdwq:
11236                 /* We found an available entry, copy the IRQ info */
11237                 start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11238                 if (start_cpu == nr_cpumask_bits)
11239                         start_cpu = first_cpu;
11240                 cpup->hdwq = new_cpup->hdwq;
11241  logit:
11242                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11243                                 "3335 Set Affinity: CPU %d (phys %d core %d): "
11244                                 "hdwq %d eq %d flg x%x\n",
11245                                 cpu, cpup->phys_id, cpup->core_id,
11246                                 cpup->hdwq, cpup->eq, cpup->flag);
11247         }
11248
11249         /*
11250          * Initialize the cpu_map slots for not-present cpus in case
11251          * a cpu is hot-added. Perform a simple hdwq round robin assignment.
11252          */
11253         idx = 0;
11254         for_each_possible_cpu(cpu) {
11255                 cpup = &phba->sli4_hba.cpu_map[cpu];
11256 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11257                 c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
11258                 c_stat->hdwq_no = cpup->hdwq;
11259 #endif
11260                 if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
11261                         continue;
11262
11263                 cpup->hdwq = idx++ % phba->cfg_hdw_queue;
11264 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11265                 c_stat->hdwq_no = cpup->hdwq;
11266 #endif
11267                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11268                                 "3340 Set Affinity: not present "
11269                                 "CPU %d hdwq %d\n",
11270                                 cpu, cpup->hdwq);
11271         }
11272
11273         /* The cpu_map array will be used later during initialization
11274          * when EQ / CQ / WQs are allocated and configured.
11275          */
11276         return;
11277 }
11278
11279 /**
11280  * lpfc_cpuhp_get_eq
11281  *
11282  * @phba:   pointer to lpfc hba data structure.
11283  * @cpu:    cpu going offline
11284  * @eqlist: eq list to append to
11285  */
11286 static int
11287 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
11288                   struct list_head *eqlist)
11289 {
11290         const struct cpumask *maskp;
11291         struct lpfc_queue *eq;
11292         struct cpumask *tmp;
11293         u16 idx;
11294
11295         tmp = kzalloc(cpumask_size(), GFP_KERNEL);
11296         if (!tmp)
11297                 return -ENOMEM;
11298
11299         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11300                 maskp = pci_irq_get_affinity(phba->pcidev, idx);
11301                 if (!maskp)
11302                         continue;
11303                 /*
11304                  * if irq is not affinitized to the cpu going
11305                  * then we don't need to poll the eq attached
11306                  * to it.
11307                  */
11308                 if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
11309                         continue;
11310                 /* get the cpus that are online and are affini-
11311                  * tized to this irq vector.  If the count is
11312                  * more than 1 then cpuhp is not going to shut-
11313                  * down this vector.  Since this cpu has not
11314                  * gone offline yet, we need >1.
11315                  */
11316                 cpumask_and(tmp, maskp, cpu_online_mask);
11317                 if (cpumask_weight(tmp) > 1)
11318                         continue;
11319
11320                 /* Now that we have an irq to shutdown, get the eq
11321                  * mapped to this irq.  Note: multiple hdwq's in
11322                  * the software can share an eq, but eventually
11323                  * only eq will be mapped to this vector
11324                  */
11325                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
11326                 list_add(&eq->_poll_list, eqlist);
11327         }
11328         kfree(tmp);
11329         return 0;
11330 }
11331
11332 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
11333 {
11334         if (phba->sli_rev != LPFC_SLI_REV4)
11335                 return;
11336
11337         cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
11338                                             &phba->cpuhp);
11339         /*
11340          * unregistering the instance doesn't stop the polling
11341          * timer. Wait for the poll timer to retire.
11342          */
11343         synchronize_rcu();
11344         del_timer_sync(&phba->cpuhp_poll_timer);
11345 }
11346
11347 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
11348 {
11349         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
11350                 return;
11351
11352         __lpfc_cpuhp_remove(phba);
11353 }
11354
11355 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
11356 {
11357         if (phba->sli_rev != LPFC_SLI_REV4)
11358                 return;
11359
11360         rcu_read_lock();
11361
11362         if (!list_empty(&phba->poll_list))
11363                 mod_timer(&phba->cpuhp_poll_timer,
11364                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
11365
11366         rcu_read_unlock();
11367
11368         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
11369                                          &phba->cpuhp);
11370 }
11371
11372 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
11373 {
11374         if (phba->pport->load_flag & FC_UNLOADING) {
11375                 *retval = -EAGAIN;
11376                 return true;
11377         }
11378
11379         if (phba->sli_rev != LPFC_SLI_REV4) {
11380                 *retval = 0;
11381                 return true;
11382         }
11383
11384         /* proceed with the hotplug */
11385         return false;
11386 }
11387
11388 /**
11389  * lpfc_irq_set_aff - set IRQ affinity
11390  * @eqhdl: EQ handle
11391  * @cpu: cpu to set affinity
11392  *
11393  **/
11394 static inline void
11395 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
11396 {
11397         cpumask_clear(&eqhdl->aff_mask);
11398         cpumask_set_cpu(cpu, &eqhdl->aff_mask);
11399         irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11400         irq_set_affinity_hint(eqhdl->irq, &eqhdl->aff_mask);
11401 }
11402
11403 /**
11404  * lpfc_irq_clear_aff - clear IRQ affinity
11405  * @eqhdl: EQ handle
11406  *
11407  **/
11408 static inline void
11409 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
11410 {
11411         cpumask_clear(&eqhdl->aff_mask);
11412         irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11413 }
11414
11415 /**
11416  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
11417  * @phba: pointer to HBA context object.
11418  * @cpu: cpu going offline/online
11419  * @offline: true, cpu is going offline. false, cpu is coming online.
11420  *
11421  * If cpu is going offline, we'll try our best effort to find the next
11422  * online cpu on the phba's original_mask and migrate all offlining IRQ
11423  * affinities.
11424  *
11425  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
11426  *
11427  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
11428  *       PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
11429  *
11430  **/
11431 static void
11432 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
11433 {
11434         struct lpfc_vector_map_info *cpup;
11435         struct cpumask *aff_mask;
11436         unsigned int cpu_select, cpu_next, idx;
11437         const struct cpumask *orig_mask;
11438
11439         if (phba->irq_chann_mode == NORMAL_MODE)
11440                 return;
11441
11442         orig_mask = &phba->sli4_hba.irq_aff_mask;
11443
11444         if (!cpumask_test_cpu(cpu, orig_mask))
11445                 return;
11446
11447         cpup = &phba->sli4_hba.cpu_map[cpu];
11448
11449         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11450                 return;
11451
11452         if (offline) {
11453                 /* Find next online CPU on original mask */
11454                 cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);
11455                 cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
11456
11457                 /* Found a valid CPU */
11458                 if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
11459                         /* Go through each eqhdl and ensure offlining
11460                          * cpu aff_mask is migrated
11461                          */
11462                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11463                                 aff_mask = lpfc_get_aff_mask(idx);
11464
11465                                 /* Migrate affinity */
11466                                 if (cpumask_test_cpu(cpu, aff_mask))
11467                                         lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
11468                                                          cpu_select);
11469                         }
11470                 } else {
11471                         /* Rely on irqbalance if no online CPUs left on NUMA */
11472                         for (idx = 0; idx < phba->cfg_irq_chann; idx++)
11473                                 lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
11474                 }
11475         } else {
11476                 /* Migrate affinity back to this CPU */
11477                 lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
11478         }
11479 }
11480
11481 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
11482 {
11483         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11484         struct lpfc_queue *eq, *next;
11485         LIST_HEAD(eqlist);
11486         int retval;
11487
11488         if (!phba) {
11489                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11490                 return 0;
11491         }
11492
11493         if (__lpfc_cpuhp_checks(phba, &retval))
11494                 return retval;
11495
11496         lpfc_irq_rebalance(phba, cpu, true);
11497
11498         retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
11499         if (retval)
11500                 return retval;
11501
11502         /* start polling on these eq's */
11503         list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
11504                 list_del_init(&eq->_poll_list);
11505                 lpfc_sli4_start_polling(eq);
11506         }
11507
11508         return 0;
11509 }
11510
11511 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
11512 {
11513         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11514         struct lpfc_queue *eq, *next;
11515         unsigned int n;
11516         int retval;
11517
11518         if (!phba) {
11519                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11520                 return 0;
11521         }
11522
11523         if (__lpfc_cpuhp_checks(phba, &retval))
11524                 return retval;
11525
11526         lpfc_irq_rebalance(phba, cpu, false);
11527
11528         list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
11529                 n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
11530                 if (n == cpu)
11531                         lpfc_sli4_stop_polling(eq);
11532         }
11533
11534         return 0;
11535 }
11536
11537 /**
11538  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
11539  * @phba: pointer to lpfc hba data structure.
11540  *
11541  * This routine is invoked to enable the MSI-X interrupt vectors to device
11542  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
11543  * to cpus on the system.
11544  *
11545  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
11546  * the number of cpus on the same numa node as this adapter.  The vectors are
11547  * allocated without requesting OS affinity mapping.  A vector will be
11548  * allocated and assigned to each online and offline cpu.  If the cpu is
11549  * online, then affinity will be set to that cpu.  If the cpu is offline, then
11550  * affinity will be set to the nearest peer cpu within the numa node that is
11551  * online.  If there are no online cpus within the numa node, affinity is not
11552  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
11553  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
11554  * configured.
11555  *
11556  * If numa mode is not enabled and there is more than 1 vector allocated, then
11557  * the driver relies on the managed irq interface where the OS assigns vector to
11558  * cpu affinity.  The driver will then use that affinity mapping to setup its
11559  * cpu mapping table.
11560  *
11561  * Return codes
11562  * 0 - successful
11563  * other values - error
11564  **/
11565 static int
11566 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
11567 {
11568         int vectors, rc, index;
11569         char *name;
11570         const struct cpumask *aff_mask = NULL;
11571         unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
11572         struct lpfc_vector_map_info *cpup;
11573         struct lpfc_hba_eq_hdl *eqhdl;
11574         const struct cpumask *maskp;
11575         unsigned int flags = PCI_IRQ_MSIX;
11576
11577         /* Set up MSI-X multi-message vectors */
11578         vectors = phba->cfg_irq_chann;
11579
11580         if (phba->irq_chann_mode != NORMAL_MODE)
11581                 aff_mask = &phba->sli4_hba.irq_aff_mask;
11582
11583         if (aff_mask) {
11584                 cpu_cnt = cpumask_weight(aff_mask);
11585                 vectors = min(phba->cfg_irq_chann, cpu_cnt);
11586
11587                 /* cpu: iterates over aff_mask including offline or online
11588                  * cpu_select: iterates over online aff_mask to set affinity
11589                  */
11590                 cpu = cpumask_first(aff_mask);
11591                 cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11592         } else {
11593                 flags |= PCI_IRQ_AFFINITY;
11594         }
11595
11596         rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
11597         if (rc < 0) {
11598                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11599                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
11600                 goto vec_fail_out;
11601         }
11602         vectors = rc;
11603
11604         /* Assign MSI-X vectors to interrupt handlers */
11605         for (index = 0; index < vectors; index++) {
11606                 eqhdl = lpfc_get_eq_hdl(index);
11607                 name = eqhdl->handler_name;
11608                 memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
11609                 snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
11610                          LPFC_DRIVER_HANDLER_NAME"%d", index);
11611
11612                 eqhdl->idx = index;
11613                 rc = request_irq(pci_irq_vector(phba->pcidev, index),
11614                          &lpfc_sli4_hba_intr_handler, 0,
11615                          name, eqhdl);
11616                 if (rc) {
11617                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11618                                         "0486 MSI-X fast-path (%d) "
11619                                         "request_irq failed (%d)\n", index, rc);
11620                         goto cfg_fail_out;
11621                 }
11622
11623                 eqhdl->irq = pci_irq_vector(phba->pcidev, index);
11624
11625                 if (aff_mask) {
11626                         /* If found a neighboring online cpu, set affinity */
11627                         if (cpu_select < nr_cpu_ids)
11628                                 lpfc_irq_set_aff(eqhdl, cpu_select);
11629
11630                         /* Assign EQ to cpu_map */
11631                         lpfc_assign_eq_map_info(phba, index,
11632                                                 LPFC_CPU_FIRST_IRQ,
11633                                                 cpu);
11634
11635                         /* Iterate to next offline or online cpu in aff_mask */
11636                         cpu = cpumask_next(cpu, aff_mask);
11637
11638                         /* Find next online cpu in aff_mask to set affinity */
11639                         cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11640                 } else if (vectors == 1) {
11641                         cpu = cpumask_first(cpu_present_mask);
11642                         lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
11643                                                 cpu);
11644                 } else {
11645                         maskp = pci_irq_get_affinity(phba->pcidev, index);
11646
11647                         /* Loop through all CPUs associated with vector index */
11648                         for_each_cpu_and(cpu, maskp, cpu_present_mask) {
11649                                 cpup = &phba->sli4_hba.cpu_map[cpu];
11650
11651                                 /* If this is the first CPU thats assigned to
11652                                  * this vector, set LPFC_CPU_FIRST_IRQ.
11653                                  *
11654                                  * With certain platforms its possible that irq
11655                                  * vectors are affinitized to all the cpu's.
11656                                  * This can result in each cpu_map.eq to be set
11657                                  * to the last vector, resulting in overwrite
11658                                  * of all the previous cpu_map.eq.  Ensure that
11659                                  * each vector receives a place in cpu_map.
11660                                  * Later call to lpfc_cpu_affinity_check will
11661                                  * ensure we are nicely balanced out.
11662                                  */
11663                                 if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
11664                                         continue;
11665                                 lpfc_assign_eq_map_info(phba, index,
11666                                                         LPFC_CPU_FIRST_IRQ,
11667                                                         cpu);
11668                                 break;
11669                         }
11670                 }
11671         }
11672
11673         if (vectors != phba->cfg_irq_chann) {
11674                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11675                                 "3238 Reducing IO channels to match number of "
11676                                 "MSI-X vectors, requested %d got %d\n",
11677                                 phba->cfg_irq_chann, vectors);
11678                 if (phba->cfg_irq_chann > vectors)
11679                         phba->cfg_irq_chann = vectors;
11680         }
11681
11682         return rc;
11683
11684 cfg_fail_out:
11685         /* free the irq already requested */
11686         for (--index; index >= 0; index--) {
11687                 eqhdl = lpfc_get_eq_hdl(index);
11688                 lpfc_irq_clear_aff(eqhdl);
11689                 irq_set_affinity_hint(eqhdl->irq, NULL);
11690                 free_irq(eqhdl->irq, eqhdl);
11691         }
11692
11693         /* Unconfigure MSI-X capability structure */
11694         pci_free_irq_vectors(phba->pcidev);
11695
11696 vec_fail_out:
11697         return rc;
11698 }
11699
11700 /**
11701  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
11702  * @phba: pointer to lpfc hba data structure.
11703  *
11704  * This routine is invoked to enable the MSI interrupt mode to device with
11705  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
11706  * called to enable the MSI vector. The device driver is responsible for
11707  * calling the request_irq() to register MSI vector with a interrupt the
11708  * handler, which is done in this function.
11709  *
11710  * Return codes
11711  *      0 - successful
11712  *      other values - error
11713  **/
11714 static int
11715 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
11716 {
11717         int rc, index;
11718         unsigned int cpu;
11719         struct lpfc_hba_eq_hdl *eqhdl;
11720
11721         rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
11722                                    PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
11723         if (rc > 0)
11724                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11725                                 "0487 PCI enable MSI mode success.\n");
11726         else {
11727                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11728                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
11729                 return rc ? rc : -1;
11730         }
11731
11732         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11733                          0, LPFC_DRIVER_NAME, phba);
11734         if (rc) {
11735                 pci_free_irq_vectors(phba->pcidev);
11736                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11737                                 "0490 MSI request_irq failed (%d)\n", rc);
11738                 return rc;
11739         }
11740
11741         eqhdl = lpfc_get_eq_hdl(0);
11742         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11743
11744         cpu = cpumask_first(cpu_present_mask);
11745         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
11746
11747         for (index = 0; index < phba->cfg_irq_chann; index++) {
11748                 eqhdl = lpfc_get_eq_hdl(index);
11749                 eqhdl->idx = index;
11750         }
11751
11752         return 0;
11753 }
11754
11755 /**
11756  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
11757  * @phba: pointer to lpfc hba data structure.
11758  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
11759  *
11760  * This routine is invoked to enable device interrupt and associate driver's
11761  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
11762  * interface spec. Depends on the interrupt mode configured to the driver,
11763  * the driver will try to fallback from the configured interrupt mode to an
11764  * interrupt mode which is supported by the platform, kernel, and device in
11765  * the order of:
11766  * MSI-X -> MSI -> IRQ.
11767  *
11768  * Return codes
11769  *      0 - successful
11770  *      other values - error
11771  **/
11772 static uint32_t
11773 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
11774 {
11775         uint32_t intr_mode = LPFC_INTR_ERROR;
11776         int retval, idx;
11777
11778         if (cfg_mode == 2) {
11779                 /* Preparation before conf_msi mbox cmd */
11780                 retval = 0;
11781                 if (!retval) {
11782                         /* Now, try to enable MSI-X interrupt mode */
11783                         retval = lpfc_sli4_enable_msix(phba);
11784                         if (!retval) {
11785                                 /* Indicate initialization to MSI-X mode */
11786                                 phba->intr_type = MSIX;
11787                                 intr_mode = 2;
11788                         }
11789                 }
11790         }
11791
11792         /* Fallback to MSI if MSI-X initialization failed */
11793         if (cfg_mode >= 1 && phba->intr_type == NONE) {
11794                 retval = lpfc_sli4_enable_msi(phba);
11795                 if (!retval) {
11796                         /* Indicate initialization to MSI mode */
11797                         phba->intr_type = MSI;
11798                         intr_mode = 1;
11799                 }
11800         }
11801
11802         /* Fallback to INTx if both MSI-X/MSI initalization failed */
11803         if (phba->intr_type == NONE) {
11804                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11805                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
11806                 if (!retval) {
11807                         struct lpfc_hba_eq_hdl *eqhdl;
11808                         unsigned int cpu;
11809
11810                         /* Indicate initialization to INTx mode */
11811                         phba->intr_type = INTx;
11812                         intr_mode = 0;
11813
11814                         eqhdl = lpfc_get_eq_hdl(0);
11815                         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11816
11817                         cpu = cpumask_first(cpu_present_mask);
11818                         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
11819                                                 cpu);
11820                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11821                                 eqhdl = lpfc_get_eq_hdl(idx);
11822                                 eqhdl->idx = idx;
11823                         }
11824                 }
11825         }
11826         return intr_mode;
11827 }
11828
11829 /**
11830  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
11831  * @phba: pointer to lpfc hba data structure.
11832  *
11833  * This routine is invoked to disable device interrupt and disassociate
11834  * the driver's interrupt handler(s) from interrupt vector(s) to device
11835  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
11836  * will release the interrupt vector(s) for the message signaled interrupt.
11837  **/
11838 static void
11839 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
11840 {
11841         /* Disable the currently initialized interrupt mode */
11842         if (phba->intr_type == MSIX) {
11843                 int index;
11844                 struct lpfc_hba_eq_hdl *eqhdl;
11845
11846                 /* Free up MSI-X multi-message vectors */
11847                 for (index = 0; index < phba->cfg_irq_chann; index++) {
11848                         eqhdl = lpfc_get_eq_hdl(index);
11849                         lpfc_irq_clear_aff(eqhdl);
11850                         irq_set_affinity_hint(eqhdl->irq, NULL);
11851                         free_irq(eqhdl->irq, eqhdl);
11852                 }
11853         } else {
11854                 free_irq(phba->pcidev->irq, phba);
11855         }
11856
11857         pci_free_irq_vectors(phba->pcidev);
11858
11859         /* Reset interrupt management states */
11860         phba->intr_type = NONE;
11861         phba->sli.slistat.sli_intr = 0;
11862 }
11863
11864 /**
11865  * lpfc_unset_hba - Unset SLI3 hba device initialization
11866  * @phba: pointer to lpfc hba data structure.
11867  *
11868  * This routine is invoked to unset the HBA device initialization steps to
11869  * a device with SLI-3 interface spec.
11870  **/
11871 static void
11872 lpfc_unset_hba(struct lpfc_hba *phba)
11873 {
11874         struct lpfc_vport *vport = phba->pport;
11875         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
11876
11877         spin_lock_irq(shost->host_lock);
11878         vport->load_flag |= FC_UNLOADING;
11879         spin_unlock_irq(shost->host_lock);
11880
11881         kfree(phba->vpi_bmask);
11882         kfree(phba->vpi_ids);
11883
11884         lpfc_stop_hba_timers(phba);
11885
11886         phba->pport->work_port_events = 0;
11887
11888         lpfc_sli_hba_down(phba);
11889
11890         lpfc_sli_brdrestart(phba);
11891
11892         lpfc_sli_disable_intr(phba);
11893
11894         return;
11895 }
11896
11897 /**
11898  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
11899  * @phba: Pointer to HBA context object.
11900  *
11901  * This function is called in the SLI4 code path to wait for completion
11902  * of device's XRIs exchange busy. It will check the XRI exchange busy
11903  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
11904  * that, it will check the XRI exchange busy on outstanding FCP and ELS
11905  * I/Os every 30 seconds, log error message, and wait forever. Only when
11906  * all XRI exchange busy complete, the driver unload shall proceed with
11907  * invoking the function reset ioctl mailbox command to the CNA and the
11908  * the rest of the driver unload resource release.
11909  **/
11910 static void
11911 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
11912 {
11913         struct lpfc_sli4_hdw_queue *qp;
11914         int idx, ccnt;
11915         int wait_time = 0;
11916         int io_xri_cmpl = 1;
11917         int nvmet_xri_cmpl = 1;
11918         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11919
11920         /* Driver just aborted IOs during the hba_unset process.  Pause
11921          * here to give the HBA time to complete the IO and get entries
11922          * into the abts lists.
11923          */
11924         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
11925
11926         /* Wait for NVME pending IO to flush back to transport. */
11927         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
11928                 lpfc_nvme_wait_for_io_drain(phba);
11929
11930         ccnt = 0;
11931         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11932                 qp = &phba->sli4_hba.hdwq[idx];
11933                 io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
11934                 if (!io_xri_cmpl) /* if list is NOT empty */
11935                         ccnt++;
11936         }
11937         if (ccnt)
11938                 io_xri_cmpl = 0;
11939
11940         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11941                 nvmet_xri_cmpl =
11942                         list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11943         }
11944
11945         while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
11946                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
11947                         if (!nvmet_xri_cmpl)
11948                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11949                                                 "6424 NVMET XRI exchange busy "
11950                                                 "wait time: %d seconds.\n",
11951                                                 wait_time/1000);
11952                         if (!io_xri_cmpl)
11953                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11954                                                 "6100 IO XRI exchange busy "
11955                                                 "wait time: %d seconds.\n",
11956                                                 wait_time/1000);
11957                         if (!els_xri_cmpl)
11958                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11959                                                 "2878 ELS XRI exchange busy "
11960                                                 "wait time: %d seconds.\n",
11961                                                 wait_time/1000);
11962                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
11963                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
11964                 } else {
11965                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
11966                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
11967                 }
11968
11969                 ccnt = 0;
11970                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11971                         qp = &phba->sli4_hba.hdwq[idx];
11972                         io_xri_cmpl = list_empty(
11973                             &qp->lpfc_abts_io_buf_list);
11974                         if (!io_xri_cmpl) /* if list is NOT empty */
11975                                 ccnt++;
11976                 }
11977                 if (ccnt)
11978                         io_xri_cmpl = 0;
11979
11980                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11981                         nvmet_xri_cmpl = list_empty(
11982                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11983                 }
11984                 els_xri_cmpl =
11985                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11986
11987         }
11988 }
11989
11990 /**
11991  * lpfc_sli4_hba_unset - Unset the fcoe hba
11992  * @phba: Pointer to HBA context object.
11993  *
11994  * This function is called in the SLI4 code path to reset the HBA's FCoE
11995  * function. The caller is not required to hold any lock. This routine
11996  * issues PCI function reset mailbox command to reset the FCoE function.
11997  * At the end of the function, it calls lpfc_hba_down_post function to
11998  * free any pending commands.
11999  **/
12000 static void
12001 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
12002 {
12003         int wait_cnt = 0;
12004         LPFC_MBOXQ_t *mboxq;
12005         struct pci_dev *pdev = phba->pcidev;
12006
12007         lpfc_stop_hba_timers(phba);
12008         if (phba->pport)
12009                 phba->sli4_hba.intr_enable = 0;
12010
12011         /*
12012          * Gracefully wait out the potential current outstanding asynchronous
12013          * mailbox command.
12014          */
12015
12016         /* First, block any pending async mailbox command from posted */
12017         spin_lock_irq(&phba->hbalock);
12018         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
12019         spin_unlock_irq(&phba->hbalock);
12020         /* Now, trying to wait it out if we can */
12021         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
12022                 msleep(10);
12023                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
12024                         break;
12025         }
12026         /* Forcefully release the outstanding mailbox command if timed out */
12027         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
12028                 spin_lock_irq(&phba->hbalock);
12029                 mboxq = phba->sli.mbox_active;
12030                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
12031                 __lpfc_mbox_cmpl_put(phba, mboxq);
12032                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
12033                 phba->sli.mbox_active = NULL;
12034                 spin_unlock_irq(&phba->hbalock);
12035         }
12036
12037         /* Abort all iocbs associated with the hba */
12038         lpfc_sli_hba_iocb_abort(phba);
12039
12040         /* Wait for completion of device XRI exchange busy */
12041         lpfc_sli4_xri_exchange_busy_wait(phba);
12042
12043         /* per-phba callback de-registration for hotplug event */
12044         if (phba->pport)
12045                 lpfc_cpuhp_remove(phba);
12046
12047         /* Disable PCI subsystem interrupt */
12048         lpfc_sli4_disable_intr(phba);
12049
12050         /* Disable SR-IOV if enabled */
12051         if (phba->cfg_sriov_nr_virtfn)
12052                 pci_disable_sriov(pdev);
12053
12054         /* Stop kthread signal shall trigger work_done one more time */
12055         kthread_stop(phba->worker_thread);
12056
12057         /* Disable FW logging to host memory */
12058         lpfc_ras_stop_fwlog(phba);
12059
12060         /* Unset the queues shared with the hardware then release all
12061          * allocated resources.
12062          */
12063         lpfc_sli4_queue_unset(phba);
12064         lpfc_sli4_queue_destroy(phba);
12065
12066         /* Reset SLI4 HBA FCoE function */
12067         lpfc_pci_function_reset(phba);
12068
12069         /* Free RAS DMA memory */
12070         if (phba->ras_fwlog.ras_enabled)
12071                 lpfc_sli4_ras_dma_free(phba);
12072
12073         /* Stop the SLI4 device port */
12074         if (phba->pport)
12075                 phba->pport->work_port_events = 0;
12076 }
12077
12078  /**
12079  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
12080  * @phba: Pointer to HBA context object.
12081  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
12082  *
12083  * This function is called in the SLI4 code path to read the port's
12084  * sli4 capabilities.
12085  *
12086  * This function may be be called from any context that can block-wait
12087  * for the completion.  The expectation is that this routine is called
12088  * typically from probe_one or from the online routine.
12089  **/
12090 int
12091 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
12092 {
12093         int rc;
12094         struct lpfc_mqe *mqe;
12095         struct lpfc_pc_sli4_params *sli4_params;
12096         uint32_t mbox_tmo;
12097
12098         rc = 0;
12099         mqe = &mboxq->u.mqe;
12100
12101         /* Read the port's SLI4 Parameters port capabilities */
12102         lpfc_pc_sli4_params(mboxq);
12103         if (!phba->sli4_hba.intr_enable)
12104                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
12105         else {
12106                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
12107                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
12108         }
12109
12110         if (unlikely(rc))
12111                 return 1;
12112
12113         sli4_params = &phba->sli4_hba.pc_sli4_params;
12114         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
12115         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
12116         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
12117         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
12118                                              &mqe->un.sli4_params);
12119         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
12120                                              &mqe->un.sli4_params);
12121         sli4_params->proto_types = mqe->un.sli4_params.word3;
12122         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
12123         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
12124         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
12125         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
12126         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
12127         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
12128         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
12129         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
12130         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
12131         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
12132         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
12133         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
12134         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
12135         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
12136         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
12137         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
12138         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
12139         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
12140         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
12141         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
12142
12143         /* Make sure that sge_supp_len can be handled by the driver */
12144         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
12145                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
12146
12147         return rc;
12148 }
12149
12150 /**
12151  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
12152  * @phba: Pointer to HBA context object.
12153  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
12154  *
12155  * This function is called in the SLI4 code path to read the port's
12156  * sli4 capabilities.
12157  *
12158  * This function may be be called from any context that can block-wait
12159  * for the completion.  The expectation is that this routine is called
12160  * typically from probe_one or from the online routine.
12161  **/
12162 int
12163 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
12164 {
12165         int rc;
12166         struct lpfc_mqe *mqe = &mboxq->u.mqe;
12167         struct lpfc_pc_sli4_params *sli4_params;
12168         uint32_t mbox_tmo;
12169         int length;
12170         bool exp_wqcq_pages = true;
12171         struct lpfc_sli4_parameters *mbx_sli4_parameters;
12172
12173         /*
12174          * By default, the driver assumes the SLI4 port requires RPI
12175          * header postings.  The SLI4_PARAM response will correct this
12176          * assumption.
12177          */
12178         phba->sli4_hba.rpi_hdrs_in_use = 1;
12179
12180         /* Read the port's SLI4 Config Parameters */
12181         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
12182                   sizeof(struct lpfc_sli4_cfg_mhdr));
12183         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
12184                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
12185                          length, LPFC_SLI4_MBX_EMBED);
12186         if (!phba->sli4_hba.intr_enable)
12187                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
12188         else {
12189                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
12190                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
12191         }
12192         if (unlikely(rc))
12193                 return rc;
12194         sli4_params = &phba->sli4_hba.pc_sli4_params;
12195         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
12196         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
12197         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
12198         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
12199         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
12200                                              mbx_sli4_parameters);
12201         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
12202                                              mbx_sli4_parameters);
12203         if (bf_get(cfg_phwq, mbx_sli4_parameters))
12204                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
12205         else
12206                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
12207         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
12208         sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
12209         sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
12210         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
12211         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
12212         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
12213         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
12214         sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
12215         sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
12216         sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
12217         sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
12218         sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
12219         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
12220                                             mbx_sli4_parameters);
12221         sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
12222         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
12223                                            mbx_sli4_parameters);
12224         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
12225         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
12226
12227         /* Check for Extended Pre-Registered SGL support */
12228         phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
12229
12230         /* Check for firmware nvme support */
12231         rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
12232                      bf_get(cfg_xib, mbx_sli4_parameters));
12233
12234         if (rc) {
12235                 /* Save this to indicate the Firmware supports NVME */
12236                 sli4_params->nvme = 1;
12237
12238                 /* Firmware NVME support, check driver FC4 NVME support */
12239                 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
12240                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12241                                         "6133 Disabling NVME support: "
12242                                         "FC4 type not supported: x%x\n",
12243                                         phba->cfg_enable_fc4_type);
12244                         goto fcponly;
12245                 }
12246         } else {
12247                 /* No firmware NVME support, check driver FC4 NVME support */
12248                 sli4_params->nvme = 0;
12249                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
12250                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
12251                                         "6101 Disabling NVME support: Not "
12252                                         "supported by firmware (%d %d) x%x\n",
12253                                         bf_get(cfg_nvme, mbx_sli4_parameters),
12254                                         bf_get(cfg_xib, mbx_sli4_parameters),
12255                                         phba->cfg_enable_fc4_type);
12256 fcponly:
12257                         phba->nvme_support = 0;
12258                         phba->nvmet_support = 0;
12259                         phba->cfg_nvmet_mrq = 0;
12260                         phba->cfg_nvme_seg_cnt = 0;
12261
12262                         /* If no FC4 type support, move to just SCSI support */
12263                         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
12264                                 return -ENODEV;
12265                         phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
12266                 }
12267         }
12268
12269         /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
12270          * accommodate 512K and 1M IOs in a single nvme buf.
12271          */
12272         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
12273                 phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
12274
12275         /* Only embed PBDE for if_type 6, PBDE support requires xib be set */
12276         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
12277             LPFC_SLI_INTF_IF_TYPE_6) || (!bf_get(cfg_xib, mbx_sli4_parameters)))
12278                 phba->cfg_enable_pbde = 0;
12279
12280         /*
12281          * To support Suppress Response feature we must satisfy 3 conditions.
12282          * lpfc_suppress_rsp module parameter must be set (default).
12283          * In SLI4-Parameters Descriptor:
12284          * Extended Inline Buffers (XIB) must be supported.
12285          * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
12286          * (double negative).
12287          */
12288         if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
12289             !(bf_get(cfg_nosr, mbx_sli4_parameters)))
12290                 phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
12291         else
12292                 phba->cfg_suppress_rsp = 0;
12293
12294         if (bf_get(cfg_eqdr, mbx_sli4_parameters))
12295                 phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
12296
12297         /* Make sure that sge_supp_len can be handled by the driver */
12298         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
12299                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
12300
12301         /*
12302          * Check whether the adapter supports an embedded copy of the
12303          * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
12304          * to use this option, 128-byte WQEs must be used.
12305          */
12306         if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
12307                 phba->fcp_embed_io = 1;
12308         else
12309                 phba->fcp_embed_io = 0;
12310
12311         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12312                         "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
12313                         bf_get(cfg_xib, mbx_sli4_parameters),
12314                         phba->cfg_enable_pbde,
12315                         phba->fcp_embed_io, phba->nvme_support,
12316                         phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
12317
12318         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
12319             LPFC_SLI_INTF_IF_TYPE_2) &&
12320             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
12321                  LPFC_SLI_INTF_FAMILY_LNCR_A0))
12322                 exp_wqcq_pages = false;
12323
12324         if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
12325             (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
12326             exp_wqcq_pages &&
12327             (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
12328                 phba->enab_exp_wqcq_pages = 1;
12329         else
12330                 phba->enab_exp_wqcq_pages = 0;
12331         /*
12332          * Check if the SLI port supports MDS Diagnostics
12333          */
12334         if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
12335                 phba->mds_diags_support = 1;
12336         else
12337                 phba->mds_diags_support = 0;
12338
12339         /*
12340          * Check if the SLI port supports NSLER
12341          */
12342         if (bf_get(cfg_nsler, mbx_sli4_parameters))
12343                 phba->nsler = 1;
12344         else
12345                 phba->nsler = 0;
12346
12347         /* Save PB info for use during HBA setup */
12348         sli4_params->mi_ver = bf_get(cfg_mi_ver, mbx_sli4_parameters);
12349         sli4_params->mib_bde_cnt = bf_get(cfg_mib_bde_cnt, mbx_sli4_parameters);
12350         sli4_params->mib_size = mbx_sli4_parameters->mib_size;
12351         sli4_params->mi_value = LPFC_DFLT_MIB_VAL;
12352
12353         /* Next we check for Vendor MIB support */
12354         if (sli4_params->mi_ver && phba->cfg_enable_mi)
12355                 phba->cfg_fdmi_on = LPFC_FDMI_SUPPORT;
12356
12357         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12358                         "6461 MIB attr %d  enable %d  FDMI %d buf %d:%d\n",
12359                         sli4_params->mi_ver, phba->cfg_enable_mi,
12360                         sli4_params->mi_value, sli4_params->mib_bde_cnt,
12361                         sli4_params->mib_size);
12362         return 0;
12363 }
12364
12365 /**
12366  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
12367  * @pdev: pointer to PCI device
12368  * @pid: pointer to PCI device identifier
12369  *
12370  * This routine is to be called to attach a device with SLI-3 interface spec
12371  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12372  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
12373  * information of the device and driver to see if the driver state that it can
12374  * support this kind of device. If the match is successful, the driver core
12375  * invokes this routine. If this routine determines it can claim the HBA, it
12376  * does all the initialization that it needs to do to handle the HBA properly.
12377  *
12378  * Return code
12379  *      0 - driver can claim the device
12380  *      negative value - driver can not claim the device
12381  **/
12382 static int
12383 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
12384 {
12385         struct lpfc_hba   *phba;
12386         struct lpfc_vport *vport = NULL;
12387         struct Scsi_Host  *shost = NULL;
12388         int error;
12389         uint32_t cfg_mode, intr_mode;
12390
12391         /* Allocate memory for HBA structure */
12392         phba = lpfc_hba_alloc(pdev);
12393         if (!phba)
12394                 return -ENOMEM;
12395
12396         /* Perform generic PCI device enabling operation */
12397         error = lpfc_enable_pci_dev(phba);
12398         if (error)
12399                 goto out_free_phba;
12400
12401         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
12402         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
12403         if (error)
12404                 goto out_disable_pci_dev;
12405
12406         /* Set up SLI-3 specific device PCI memory space */
12407         error = lpfc_sli_pci_mem_setup(phba);
12408         if (error) {
12409                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12410                                 "1402 Failed to set up pci memory space.\n");
12411                 goto out_disable_pci_dev;
12412         }
12413
12414         /* Set up SLI-3 specific device driver resources */
12415         error = lpfc_sli_driver_resource_setup(phba);
12416         if (error) {
12417                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12418                                 "1404 Failed to set up driver resource.\n");
12419                 goto out_unset_pci_mem_s3;
12420         }
12421
12422         /* Initialize and populate the iocb list per host */
12423
12424         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
12425         if (error) {
12426                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12427                                 "1405 Failed to initialize iocb list.\n");
12428                 goto out_unset_driver_resource_s3;
12429         }
12430
12431         /* Set up common device driver resources */
12432         error = lpfc_setup_driver_resource_phase2(phba);
12433         if (error) {
12434                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12435                                 "1406 Failed to set up driver resource.\n");
12436                 goto out_free_iocb_list;
12437         }
12438
12439         /* Get the default values for Model Name and Description */
12440         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
12441
12442         /* Create SCSI host to the physical port */
12443         error = lpfc_create_shost(phba);
12444         if (error) {
12445                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12446                                 "1407 Failed to create scsi host.\n");
12447                 goto out_unset_driver_resource;
12448         }
12449
12450         /* Configure sysfs attributes */
12451         vport = phba->pport;
12452         error = lpfc_alloc_sysfs_attr(vport);
12453         if (error) {
12454                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12455                                 "1476 Failed to allocate sysfs attr\n");
12456                 goto out_destroy_shost;
12457         }
12458
12459         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
12460         /* Now, trying to enable interrupt and bring up the device */
12461         cfg_mode = phba->cfg_use_msi;
12462         while (true) {
12463                 /* Put device to a known state before enabling interrupt */
12464                 lpfc_stop_port(phba);
12465                 /* Configure and enable interrupt */
12466                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
12467                 if (intr_mode == LPFC_INTR_ERROR) {
12468                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12469                                         "0431 Failed to enable interrupt.\n");
12470                         error = -ENODEV;
12471                         goto out_free_sysfs_attr;
12472                 }
12473                 /* SLI-3 HBA setup */
12474                 if (lpfc_sli_hba_setup(phba)) {
12475                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12476                                         "1477 Failed to set up hba\n");
12477                         error = -ENODEV;
12478                         goto out_remove_device;
12479                 }
12480
12481                 /* Wait 50ms for the interrupts of previous mailbox commands */
12482                 msleep(50);
12483                 /* Check active interrupts on message signaled interrupts */
12484                 if (intr_mode == 0 ||
12485                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
12486                         /* Log the current active interrupt mode */
12487                         phba->intr_mode = intr_mode;
12488                         lpfc_log_intr_mode(phba, intr_mode);
12489                         break;
12490                 } else {
12491                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12492                                         "0447 Configure interrupt mode (%d) "
12493                                         "failed active interrupt test.\n",
12494                                         intr_mode);
12495                         /* Disable the current interrupt mode */
12496                         lpfc_sli_disable_intr(phba);
12497                         /* Try next level of interrupt mode */
12498                         cfg_mode = --intr_mode;
12499                 }
12500         }
12501
12502         /* Perform post initialization setup */
12503         lpfc_post_init_setup(phba);
12504
12505         /* Check if there are static vports to be created. */
12506         lpfc_create_static_vport(phba);
12507
12508         return 0;
12509
12510 out_remove_device:
12511         lpfc_unset_hba(phba);
12512 out_free_sysfs_attr:
12513         lpfc_free_sysfs_attr(vport);
12514 out_destroy_shost:
12515         lpfc_destroy_shost(phba);
12516 out_unset_driver_resource:
12517         lpfc_unset_driver_resource_phase2(phba);
12518 out_free_iocb_list:
12519         lpfc_free_iocb_list(phba);
12520 out_unset_driver_resource_s3:
12521         lpfc_sli_driver_resource_unset(phba);
12522 out_unset_pci_mem_s3:
12523         lpfc_sli_pci_mem_unset(phba);
12524 out_disable_pci_dev:
12525         lpfc_disable_pci_dev(phba);
12526         if (shost)
12527                 scsi_host_put(shost);
12528 out_free_phba:
12529         lpfc_hba_free(phba);
12530         return error;
12531 }
12532
12533 /**
12534  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
12535  * @pdev: pointer to PCI device
12536  *
12537  * This routine is to be called to disattach a device with SLI-3 interface
12538  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12539  * removed from PCI bus, it performs all the necessary cleanup for the HBA
12540  * device to be removed from the PCI subsystem properly.
12541  **/
12542 static void
12543 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
12544 {
12545         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
12546         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
12547         struct lpfc_vport **vports;
12548         struct lpfc_hba   *phba = vport->phba;
12549         int i;
12550
12551         spin_lock_irq(&phba->hbalock);
12552         vport->load_flag |= FC_UNLOADING;
12553         spin_unlock_irq(&phba->hbalock);
12554
12555         lpfc_free_sysfs_attr(vport);
12556
12557         /* Release all the vports against this physical port */
12558         vports = lpfc_create_vport_work_array(phba);
12559         if (vports != NULL)
12560                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
12561                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
12562                                 continue;
12563                         fc_vport_terminate(vports[i]->fc_vport);
12564                 }
12565         lpfc_destroy_vport_work_array(phba, vports);
12566
12567         /* Remove FC host with the physical port */
12568         fc_remove_host(shost);
12569         scsi_remove_host(shost);
12570
12571         /* Clean up all nodes, mailboxes and IOs. */
12572         lpfc_cleanup(vport);
12573
12574         /*
12575          * Bring down the SLI Layer. This step disable all interrupts,
12576          * clears the rings, discards all mailbox commands, and resets
12577          * the HBA.
12578          */
12579
12580         /* HBA interrupt will be disabled after this call */
12581         lpfc_sli_hba_down(phba);
12582         /* Stop kthread signal shall trigger work_done one more time */
12583         kthread_stop(phba->worker_thread);
12584         /* Final cleanup of txcmplq and reset the HBA */
12585         lpfc_sli_brdrestart(phba);
12586
12587         kfree(phba->vpi_bmask);
12588         kfree(phba->vpi_ids);
12589
12590         lpfc_stop_hba_timers(phba);
12591         spin_lock_irq(&phba->port_list_lock);
12592         list_del_init(&vport->listentry);
12593         spin_unlock_irq(&phba->port_list_lock);
12594
12595         lpfc_debugfs_terminate(vport);
12596
12597         /* Disable SR-IOV if enabled */
12598         if (phba->cfg_sriov_nr_virtfn)
12599                 pci_disable_sriov(pdev);
12600
12601         /* Disable interrupt */
12602         lpfc_sli_disable_intr(phba);
12603
12604         scsi_host_put(shost);
12605
12606         /*
12607          * Call scsi_free before mem_free since scsi bufs are released to their
12608          * corresponding pools here.
12609          */
12610         lpfc_scsi_free(phba);
12611         lpfc_free_iocb_list(phba);
12612
12613         lpfc_mem_free_all(phba);
12614
12615         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
12616                           phba->hbqslimp.virt, phba->hbqslimp.phys);
12617
12618         /* Free resources associated with SLI2 interface */
12619         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
12620                           phba->slim2p.virt, phba->slim2p.phys);
12621
12622         /* unmap adapter SLIM and Control Registers */
12623         iounmap(phba->ctrl_regs_memmap_p);
12624         iounmap(phba->slim_memmap_p);
12625
12626         lpfc_hba_free(phba);
12627
12628         pci_release_mem_regions(pdev);
12629         pci_disable_device(pdev);
12630 }
12631
12632 /**
12633  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
12634  * @dev_d: pointer to device
12635  *
12636  * This routine is to be called from the kernel's PCI subsystem to support
12637  * system Power Management (PM) to device with SLI-3 interface spec. When
12638  * PM invokes this method, it quiesces the device by stopping the driver's
12639  * worker thread for the device, turning off device's interrupt and DMA,
12640  * and bring the device offline. Note that as the driver implements the
12641  * minimum PM requirements to a power-aware driver's PM support for the
12642  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
12643  * to the suspend() method call will be treated as SUSPEND and the driver will
12644  * fully reinitialize its device during resume() method call, the driver will
12645  * set device to PCI_D3hot state in PCI config space instead of setting it
12646  * according to the @msg provided by the PM.
12647  *
12648  * Return code
12649  *      0 - driver suspended the device
12650  *      Error otherwise
12651  **/
12652 static int __maybe_unused
12653 lpfc_pci_suspend_one_s3(struct device *dev_d)
12654 {
12655         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
12656         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12657
12658         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12659                         "0473 PCI device Power Management suspend.\n");
12660
12661         /* Bring down the device */
12662         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12663         lpfc_offline(phba);
12664         kthread_stop(phba->worker_thread);
12665
12666         /* Disable interrupt from device */
12667         lpfc_sli_disable_intr(phba);
12668
12669         return 0;
12670 }
12671
12672 /**
12673  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
12674  * @dev_d: pointer to device
12675  *
12676  * This routine is to be called from the kernel's PCI subsystem to support
12677  * system Power Management (PM) to device with SLI-3 interface spec. When PM
12678  * invokes this method, it restores the device's PCI config space state and
12679  * fully reinitializes the device and brings it online. Note that as the
12680  * driver implements the minimum PM requirements to a power-aware driver's
12681  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
12682  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
12683  * driver will fully reinitialize its device during resume() method call,
12684  * the device will be set to PCI_D0 directly in PCI config space before
12685  * restoring the state.
12686  *
12687  * Return code
12688  *      0 - driver suspended the device
12689  *      Error otherwise
12690  **/
12691 static int __maybe_unused
12692 lpfc_pci_resume_one_s3(struct device *dev_d)
12693 {
12694         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
12695         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12696         uint32_t intr_mode;
12697         int error;
12698
12699         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12700                         "0452 PCI device Power Management resume.\n");
12701
12702         /* Startup the kernel thread for this host adapter. */
12703         phba->worker_thread = kthread_run(lpfc_do_work, phba,
12704                                         "lpfc_worker_%d", phba->brd_no);
12705         if (IS_ERR(phba->worker_thread)) {
12706                 error = PTR_ERR(phba->worker_thread);
12707                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12708                                 "0434 PM resume failed to start worker "
12709                                 "thread: error=x%x.\n", error);
12710                 return error;
12711         }
12712
12713         /* Configure and enable interrupt */
12714         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12715         if (intr_mode == LPFC_INTR_ERROR) {
12716                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12717                                 "0430 PM resume Failed to enable interrupt\n");
12718                 return -EIO;
12719         } else
12720                 phba->intr_mode = intr_mode;
12721
12722         /* Restart HBA and bring it online */
12723         lpfc_sli_brdrestart(phba);
12724         lpfc_online(phba);
12725
12726         /* Log the current active interrupt mode */
12727         lpfc_log_intr_mode(phba, phba->intr_mode);
12728
12729         return 0;
12730 }
12731
12732 /**
12733  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
12734  * @phba: pointer to lpfc hba data structure.
12735  *
12736  * This routine is called to prepare the SLI3 device for PCI slot recover. It
12737  * aborts all the outstanding SCSI I/Os to the pci device.
12738  **/
12739 static void
12740 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
12741 {
12742         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12743                         "2723 PCI channel I/O abort preparing for recovery\n");
12744
12745         /*
12746          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
12747          * and let the SCSI mid-layer to retry them to recover.
12748          */
12749         lpfc_sli_abort_fcp_rings(phba);
12750 }
12751
12752 /**
12753  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
12754  * @phba: pointer to lpfc hba data structure.
12755  *
12756  * This routine is called to prepare the SLI3 device for PCI slot reset. It
12757  * disables the device interrupt and pci device, and aborts the internal FCP
12758  * pending I/Os.
12759  **/
12760 static void
12761 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
12762 {
12763         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12764                         "2710 PCI channel disable preparing for reset\n");
12765
12766         /* Block any management I/Os to the device */
12767         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
12768
12769         /* Block all SCSI devices' I/Os on the host */
12770         lpfc_scsi_dev_block(phba);
12771
12772         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
12773         lpfc_sli_flush_io_rings(phba);
12774
12775         /* stop all timers */
12776         lpfc_stop_hba_timers(phba);
12777
12778         /* Disable interrupt and pci device */
12779         lpfc_sli_disable_intr(phba);
12780         pci_disable_device(phba->pcidev);
12781 }
12782
12783 /**
12784  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
12785  * @phba: pointer to lpfc hba data structure.
12786  *
12787  * This routine is called to prepare the SLI3 device for PCI slot permanently
12788  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
12789  * pending I/Os.
12790  **/
12791 static void
12792 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
12793 {
12794         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12795                         "2711 PCI channel permanent disable for failure\n");
12796         /* Block all SCSI devices' I/Os on the host */
12797         lpfc_scsi_dev_block(phba);
12798
12799         /* stop all timers */
12800         lpfc_stop_hba_timers(phba);
12801
12802         /* Clean up all driver's outstanding SCSI I/Os */
12803         lpfc_sli_flush_io_rings(phba);
12804 }
12805
12806 /**
12807  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
12808  * @pdev: pointer to PCI device.
12809  * @state: the current PCI connection state.
12810  *
12811  * This routine is called from the PCI subsystem for I/O error handling to
12812  * device with SLI-3 interface spec. This function is called by the PCI
12813  * subsystem after a PCI bus error affecting this device has been detected.
12814  * When this function is invoked, it will need to stop all the I/Os and
12815  * interrupt(s) to the device. Once that is done, it will return
12816  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
12817  * as desired.
12818  *
12819  * Return codes
12820  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
12821  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
12822  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12823  **/
12824 static pci_ers_result_t
12825 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
12826 {
12827         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12828         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12829
12830         switch (state) {
12831         case pci_channel_io_normal:
12832                 /* Non-fatal error, prepare for recovery */
12833                 lpfc_sli_prep_dev_for_recover(phba);
12834                 return PCI_ERS_RESULT_CAN_RECOVER;
12835         case pci_channel_io_frozen:
12836                 /* Fatal error, prepare for slot reset */
12837                 lpfc_sli_prep_dev_for_reset(phba);
12838                 return PCI_ERS_RESULT_NEED_RESET;
12839         case pci_channel_io_perm_failure:
12840                 /* Permanent failure, prepare for device down */
12841                 lpfc_sli_prep_dev_for_perm_failure(phba);
12842                 return PCI_ERS_RESULT_DISCONNECT;
12843         default:
12844                 /* Unknown state, prepare and request slot reset */
12845                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12846                                 "0472 Unknown PCI error state: x%x\n", state);
12847                 lpfc_sli_prep_dev_for_reset(phba);
12848                 return PCI_ERS_RESULT_NEED_RESET;
12849         }
12850 }
12851
12852 /**
12853  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
12854  * @pdev: pointer to PCI device.
12855  *
12856  * This routine is called from the PCI subsystem for error handling to
12857  * device with SLI-3 interface spec. This is called after PCI bus has been
12858  * reset to restart the PCI card from scratch, as if from a cold-boot.
12859  * During the PCI subsystem error recovery, after driver returns
12860  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
12861  * recovery and then call this routine before calling the .resume method
12862  * to recover the device. This function will initialize the HBA device,
12863  * enable the interrupt, but it will just put the HBA to offline state
12864  * without passing any I/O traffic.
12865  *
12866  * Return codes
12867  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
12868  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12869  */
12870 static pci_ers_result_t
12871 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
12872 {
12873         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12874         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12875         struct lpfc_sli *psli = &phba->sli;
12876         uint32_t intr_mode;
12877
12878         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
12879         if (pci_enable_device_mem(pdev)) {
12880                 printk(KERN_ERR "lpfc: Cannot re-enable "
12881                         "PCI device after reset.\n");
12882                 return PCI_ERS_RESULT_DISCONNECT;
12883         }
12884
12885         pci_restore_state(pdev);
12886
12887         /*
12888          * As the new kernel behavior of pci_restore_state() API call clears
12889          * device saved_state flag, need to save the restored state again.
12890          */
12891         pci_save_state(pdev);
12892
12893         if (pdev->is_busmaster)
12894                 pci_set_master(pdev);
12895
12896         spin_lock_irq(&phba->hbalock);
12897         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
12898         spin_unlock_irq(&phba->hbalock);
12899
12900         /* Configure and enable interrupt */
12901         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12902         if (intr_mode == LPFC_INTR_ERROR) {
12903                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12904                                 "0427 Cannot re-enable interrupt after "
12905                                 "slot reset.\n");
12906                 return PCI_ERS_RESULT_DISCONNECT;
12907         } else
12908                 phba->intr_mode = intr_mode;
12909
12910         /* Take device offline, it will perform cleanup */
12911         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12912         lpfc_offline(phba);
12913         lpfc_sli_brdrestart(phba);
12914
12915         /* Log the current active interrupt mode */
12916         lpfc_log_intr_mode(phba, phba->intr_mode);
12917
12918         return PCI_ERS_RESULT_RECOVERED;
12919 }
12920
12921 /**
12922  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
12923  * @pdev: pointer to PCI device
12924  *
12925  * This routine is called from the PCI subsystem for error handling to device
12926  * with SLI-3 interface spec. It is called when kernel error recovery tells
12927  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
12928  * error recovery. After this call, traffic can start to flow from this device
12929  * again.
12930  */
12931 static void
12932 lpfc_io_resume_s3(struct pci_dev *pdev)
12933 {
12934         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12935         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12936
12937         /* Bring device online, it will be no-op for non-fatal error resume */
12938         lpfc_online(phba);
12939 }
12940
12941 /**
12942  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
12943  * @phba: pointer to lpfc hba data structure.
12944  *
12945  * returns the number of ELS/CT IOCBs to reserve
12946  **/
12947 int
12948 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
12949 {
12950         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
12951
12952         if (phba->sli_rev == LPFC_SLI_REV4) {
12953                 if (max_xri <= 100)
12954                         return 10;
12955                 else if (max_xri <= 256)
12956                         return 25;
12957                 else if (max_xri <= 512)
12958                         return 50;
12959                 else if (max_xri <= 1024)
12960                         return 100;
12961                 else if (max_xri <= 1536)
12962                         return 150;
12963                 else if (max_xri <= 2048)
12964                         return 200;
12965                 else
12966                         return 250;
12967         } else
12968                 return 0;
12969 }
12970
12971 /**
12972  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
12973  * @phba: pointer to lpfc hba data structure.
12974  *
12975  * returns the number of ELS/CT + NVMET IOCBs to reserve
12976  **/
12977 int
12978 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
12979 {
12980         int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
12981
12982         if (phba->nvmet_support)
12983                 max_xri += LPFC_NVMET_BUF_POST;
12984         return max_xri;
12985 }
12986
12987
12988 static int
12989 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
12990         uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
12991         const struct firmware *fw)
12992 {
12993         int rc;
12994
12995         /* Three cases:  (1) FW was not supported on the detected adapter.
12996          * (2) FW update has been locked out administratively.
12997          * (3) Some other error during FW update.
12998          * In each case, an unmaskable message is written to the console
12999          * for admin diagnosis.
13000          */
13001         if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
13002             (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
13003              magic_number != MAGIC_NUMBER_G6) ||
13004             (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC &&
13005              magic_number != MAGIC_NUMBER_G7)) {
13006                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13007                                 "3030 This firmware version is not supported on"
13008                                 " this HBA model. Device:%x Magic:%x Type:%x "
13009                                 "ID:%x Size %d %zd\n",
13010                                 phba->pcidev->device, magic_number, ftype, fid,
13011                                 fsize, fw->size);
13012                 rc = -EINVAL;
13013         } else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
13014                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13015                                 "3021 Firmware downloads have been prohibited "
13016                                 "by a system configuration setting on "
13017                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
13018                                 "%zd\n",
13019                                 phba->pcidev->device, magic_number, ftype, fid,
13020                                 fsize, fw->size);
13021                 rc = -EACCES;
13022         } else {
13023                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13024                                 "3022 FW Download failed. Add Status x%x "
13025                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
13026                                 "%zd\n",
13027                                 offset, phba->pcidev->device, magic_number,
13028                                 ftype, fid, fsize, fw->size);
13029                 rc = -EIO;
13030         }
13031         return rc;
13032 }
13033
13034 /**
13035  * lpfc_write_firmware - attempt to write a firmware image to the port
13036  * @fw: pointer to firmware image returned from request_firmware.
13037  * @context: pointer to firmware image returned from request_firmware.
13038  *
13039  **/
13040 static void
13041 lpfc_write_firmware(const struct firmware *fw, void *context)
13042 {
13043         struct lpfc_hba *phba = (struct lpfc_hba *)context;
13044         char fwrev[FW_REV_STR_SIZE];
13045         struct lpfc_grp_hdr *image;
13046         struct list_head dma_buffer_list;
13047         int i, rc = 0;
13048         struct lpfc_dmabuf *dmabuf, *next;
13049         uint32_t offset = 0, temp_offset = 0;
13050         uint32_t magic_number, ftype, fid, fsize;
13051
13052         /* It can be null in no-wait mode, sanity check */
13053         if (!fw) {
13054                 rc = -ENXIO;
13055                 goto out;
13056         }
13057         image = (struct lpfc_grp_hdr *)fw->data;
13058
13059         magic_number = be32_to_cpu(image->magic_number);
13060         ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
13061         fid = bf_get_be32(lpfc_grp_hdr_id, image);
13062         fsize = be32_to_cpu(image->size);
13063
13064         INIT_LIST_HEAD(&dma_buffer_list);
13065         lpfc_decode_firmware_rev(phba, fwrev, 1);
13066         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
13067                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13068                                 "3023 Updating Firmware, Current Version:%s "
13069                                 "New Version:%s\n",
13070                                 fwrev, image->revision);
13071                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
13072                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
13073                                          GFP_KERNEL);
13074                         if (!dmabuf) {
13075                                 rc = -ENOMEM;
13076                                 goto release_out;
13077                         }
13078                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
13079                                                           SLI4_PAGE_SIZE,
13080                                                           &dmabuf->phys,
13081                                                           GFP_KERNEL);
13082                         if (!dmabuf->virt) {
13083                                 kfree(dmabuf);
13084                                 rc = -ENOMEM;
13085                                 goto release_out;
13086                         }
13087                         list_add_tail(&dmabuf->list, &dma_buffer_list);
13088                 }
13089                 while (offset < fw->size) {
13090                         temp_offset = offset;
13091                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
13092                                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
13093                                         memcpy(dmabuf->virt,
13094                                                fw->data + temp_offset,
13095                                                fw->size - temp_offset);
13096                                         temp_offset = fw->size;
13097                                         break;
13098                                 }
13099                                 memcpy(dmabuf->virt, fw->data + temp_offset,
13100                                        SLI4_PAGE_SIZE);
13101                                 temp_offset += SLI4_PAGE_SIZE;
13102                         }
13103                         rc = lpfc_wr_object(phba, &dma_buffer_list,
13104                                     (fw->size - offset), &offset);
13105                         if (rc) {
13106                                 rc = lpfc_log_write_firmware_error(phba, offset,
13107                                                                    magic_number,
13108                                                                    ftype,
13109                                                                    fid,
13110                                                                    fsize,
13111                                                                    fw);
13112                                 goto release_out;
13113                         }
13114                 }
13115                 rc = offset;
13116         } else
13117                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13118                                 "3029 Skipped Firmware update, Current "
13119                                 "Version:%s New Version:%s\n",
13120                                 fwrev, image->revision);
13121
13122 release_out:
13123         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
13124                 list_del(&dmabuf->list);
13125                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
13126                                   dmabuf->virt, dmabuf->phys);
13127                 kfree(dmabuf);
13128         }
13129         release_firmware(fw);
13130 out:
13131         if (rc < 0)
13132                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13133                                 "3062 Firmware update error, status %d.\n", rc);
13134         else
13135                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13136                                 "3024 Firmware update success: size %d.\n", rc);
13137 }
13138
13139 /**
13140  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
13141  * @phba: pointer to lpfc hba data structure.
13142  * @fw_upgrade: which firmware to update.
13143  *
13144  * This routine is called to perform Linux generic firmware upgrade on device
13145  * that supports such feature.
13146  **/
13147 int
13148 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
13149 {
13150         uint8_t file_name[ELX_MODEL_NAME_SIZE];
13151         int ret;
13152         const struct firmware *fw;
13153
13154         /* Only supported on SLI4 interface type 2 for now */
13155         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
13156             LPFC_SLI_INTF_IF_TYPE_2)
13157                 return -EPERM;
13158
13159         snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
13160
13161         if (fw_upgrade == INT_FW_UPGRADE) {
13162                 ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
13163                                         file_name, &phba->pcidev->dev,
13164                                         GFP_KERNEL, (void *)phba,
13165                                         lpfc_write_firmware);
13166         } else if (fw_upgrade == RUN_FW_UPGRADE) {
13167                 ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
13168                 if (!ret)
13169                         lpfc_write_firmware(fw, (void *)phba);
13170         } else {
13171                 ret = -EINVAL;
13172         }
13173
13174         return ret;
13175 }
13176
13177 /**
13178  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
13179  * @pdev: pointer to PCI device
13180  * @pid: pointer to PCI device identifier
13181  *
13182  * This routine is called from the kernel's PCI subsystem to device with
13183  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13184  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
13185  * information of the device and driver to see if the driver state that it
13186  * can support this kind of device. If the match is successful, the driver
13187  * core invokes this routine. If this routine determines it can claim the HBA,
13188  * it does all the initialization that it needs to do to handle the HBA
13189  * properly.
13190  *
13191  * Return code
13192  *      0 - driver can claim the device
13193  *      negative value - driver can not claim the device
13194  **/
13195 static int
13196 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
13197 {
13198         struct lpfc_hba   *phba;
13199         struct lpfc_vport *vport = NULL;
13200         struct Scsi_Host  *shost = NULL;
13201         int error;
13202         uint32_t cfg_mode, intr_mode;
13203
13204         /* Allocate memory for HBA structure */
13205         phba = lpfc_hba_alloc(pdev);
13206         if (!phba)
13207                 return -ENOMEM;
13208
13209         /* Perform generic PCI device enabling operation */
13210         error = lpfc_enable_pci_dev(phba);
13211         if (error)
13212                 goto out_free_phba;
13213
13214         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
13215         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
13216         if (error)
13217                 goto out_disable_pci_dev;
13218
13219         /* Set up SLI-4 specific device PCI memory space */
13220         error = lpfc_sli4_pci_mem_setup(phba);
13221         if (error) {
13222                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13223                                 "1410 Failed to set up pci memory space.\n");
13224                 goto out_disable_pci_dev;
13225         }
13226
13227         /* Set up SLI-4 Specific device driver resources */
13228         error = lpfc_sli4_driver_resource_setup(phba);
13229         if (error) {
13230                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13231                                 "1412 Failed to set up driver resource.\n");
13232                 goto out_unset_pci_mem_s4;
13233         }
13234
13235         INIT_LIST_HEAD(&phba->active_rrq_list);
13236         INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
13237
13238         /* Set up common device driver resources */
13239         error = lpfc_setup_driver_resource_phase2(phba);
13240         if (error) {
13241                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13242                                 "1414 Failed to set up driver resource.\n");
13243                 goto out_unset_driver_resource_s4;
13244         }
13245
13246         /* Get the default values for Model Name and Description */
13247         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
13248
13249         /* Now, trying to enable interrupt and bring up the device */
13250         cfg_mode = phba->cfg_use_msi;
13251
13252         /* Put device to a known state before enabling interrupt */
13253         phba->pport = NULL;
13254         lpfc_stop_port(phba);
13255
13256         /* Init cpu_map array */
13257         lpfc_cpu_map_array_init(phba);
13258
13259         /* Init hba_eq_hdl array */
13260         lpfc_hba_eq_hdl_array_init(phba);
13261
13262         /* Configure and enable interrupt */
13263         intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
13264         if (intr_mode == LPFC_INTR_ERROR) {
13265                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13266                                 "0426 Failed to enable interrupt.\n");
13267                 error = -ENODEV;
13268                 goto out_unset_driver_resource;
13269         }
13270         /* Default to single EQ for non-MSI-X */
13271         if (phba->intr_type != MSIX) {
13272                 phba->cfg_irq_chann = 1;
13273                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13274                         if (phba->nvmet_support)
13275                                 phba->cfg_nvmet_mrq = 1;
13276                 }
13277         }
13278         lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
13279
13280         /* Create SCSI host to the physical port */
13281         error = lpfc_create_shost(phba);
13282         if (error) {
13283                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13284                                 "1415 Failed to create scsi host.\n");
13285                 goto out_disable_intr;
13286         }
13287         vport = phba->pport;
13288         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
13289
13290         /* Configure sysfs attributes */
13291         error = lpfc_alloc_sysfs_attr(vport);
13292         if (error) {
13293                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13294                                 "1416 Failed to allocate sysfs attr\n");
13295                 goto out_destroy_shost;
13296         }
13297
13298         /* Set up SLI-4 HBA */
13299         if (lpfc_sli4_hba_setup(phba)) {
13300                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13301                                 "1421 Failed to set up hba\n");
13302                 error = -ENODEV;
13303                 goto out_free_sysfs_attr;
13304         }
13305
13306         /* Log the current active interrupt mode */
13307         phba->intr_mode = intr_mode;
13308         lpfc_log_intr_mode(phba, intr_mode);
13309
13310         /* Perform post initialization setup */
13311         lpfc_post_init_setup(phba);
13312
13313         /* NVME support in FW earlier in the driver load corrects the
13314          * FC4 type making a check for nvme_support unnecessary.
13315          */
13316         if (phba->nvmet_support == 0) {
13317                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13318                         /* Create NVME binding with nvme_fc_transport. This
13319                          * ensures the vport is initialized.  If the localport
13320                          * create fails, it should not unload the driver to
13321                          * support field issues.
13322                          */
13323                         error = lpfc_nvme_create_localport(vport);
13324                         if (error) {
13325                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13326                                                 "6004 NVME registration "
13327                                                 "failed, error x%x\n",
13328                                                 error);
13329                         }
13330                 }
13331         }
13332
13333         /* check for firmware upgrade or downgrade */
13334         if (phba->cfg_request_firmware_upgrade)
13335                 lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
13336
13337         /* Check if there are static vports to be created. */
13338         lpfc_create_static_vport(phba);
13339
13340         /* Enable RAS FW log support */
13341         lpfc_sli4_ras_setup(phba);
13342
13343         INIT_LIST_HEAD(&phba->poll_list);
13344         timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
13345         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
13346
13347         return 0;
13348
13349 out_free_sysfs_attr:
13350         lpfc_free_sysfs_attr(vport);
13351 out_destroy_shost:
13352         lpfc_destroy_shost(phba);
13353 out_disable_intr:
13354         lpfc_sli4_disable_intr(phba);
13355 out_unset_driver_resource:
13356         lpfc_unset_driver_resource_phase2(phba);
13357 out_unset_driver_resource_s4:
13358         lpfc_sli4_driver_resource_unset(phba);
13359 out_unset_pci_mem_s4:
13360         lpfc_sli4_pci_mem_unset(phba);
13361 out_disable_pci_dev:
13362         lpfc_disable_pci_dev(phba);
13363         if (shost)
13364                 scsi_host_put(shost);
13365 out_free_phba:
13366         lpfc_hba_free(phba);
13367         return error;
13368 }
13369
13370 /**
13371  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
13372  * @pdev: pointer to PCI device
13373  *
13374  * This routine is called from the kernel's PCI subsystem to device with
13375  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13376  * removed from PCI bus, it performs all the necessary cleanup for the HBA
13377  * device to be removed from the PCI subsystem properly.
13378  **/
13379 static void
13380 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
13381 {
13382         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13383         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
13384         struct lpfc_vport **vports;
13385         struct lpfc_hba *phba = vport->phba;
13386         int i;
13387
13388         /* Mark the device unloading flag */
13389         spin_lock_irq(&phba->hbalock);
13390         vport->load_flag |= FC_UNLOADING;
13391         spin_unlock_irq(&phba->hbalock);
13392
13393         lpfc_free_sysfs_attr(vport);
13394
13395         /* Release all the vports against this physical port */
13396         vports = lpfc_create_vport_work_array(phba);
13397         if (vports != NULL)
13398                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
13399                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
13400                                 continue;
13401                         fc_vport_terminate(vports[i]->fc_vport);
13402                 }
13403         lpfc_destroy_vport_work_array(phba, vports);
13404
13405         /* Remove FC host with the physical port */
13406         fc_remove_host(shost);
13407         scsi_remove_host(shost);
13408
13409         /* Perform ndlp cleanup on the physical port.  The nvme and nvmet
13410          * localports are destroyed after to cleanup all transport memory.
13411          */
13412         lpfc_cleanup(vport);
13413         lpfc_nvmet_destroy_targetport(phba);
13414         lpfc_nvme_destroy_localport(vport);
13415
13416         /* De-allocate multi-XRI pools */
13417         if (phba->cfg_xri_rebalancing)
13418                 lpfc_destroy_multixri_pools(phba);
13419
13420         /*
13421          * Bring down the SLI Layer. This step disables all interrupts,
13422          * clears the rings, discards all mailbox commands, and resets
13423          * the HBA FCoE function.
13424          */
13425         lpfc_debugfs_terminate(vport);
13426
13427         lpfc_stop_hba_timers(phba);
13428         spin_lock_irq(&phba->port_list_lock);
13429         list_del_init(&vport->listentry);
13430         spin_unlock_irq(&phba->port_list_lock);
13431
13432         /* Perform scsi free before driver resource_unset since scsi
13433          * buffers are released to their corresponding pools here.
13434          */
13435         lpfc_io_free(phba);
13436         lpfc_free_iocb_list(phba);
13437         lpfc_sli4_hba_unset(phba);
13438
13439         lpfc_unset_driver_resource_phase2(phba);
13440         lpfc_sli4_driver_resource_unset(phba);
13441
13442         /* Unmap adapter Control and Doorbell registers */
13443         lpfc_sli4_pci_mem_unset(phba);
13444
13445         /* Release PCI resources and disable device's PCI function */
13446         scsi_host_put(shost);
13447         lpfc_disable_pci_dev(phba);
13448
13449         /* Finally, free the driver's device data structure */
13450         lpfc_hba_free(phba);
13451
13452         return;
13453 }
13454
13455 /**
13456  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
13457  * @dev_d: pointer to device
13458  *
13459  * This routine is called from the kernel's PCI subsystem to support system
13460  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
13461  * this method, it quiesces the device by stopping the driver's worker
13462  * thread for the device, turning off device's interrupt and DMA, and bring
13463  * the device offline. Note that as the driver implements the minimum PM
13464  * requirements to a power-aware driver's PM support for suspend/resume -- all
13465  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
13466  * method call will be treated as SUSPEND and the driver will fully
13467  * reinitialize its device during resume() method call, the driver will set
13468  * device to PCI_D3hot state in PCI config space instead of setting it
13469  * according to the @msg provided by the PM.
13470  *
13471  * Return code
13472  *      0 - driver suspended the device
13473  *      Error otherwise
13474  **/
13475 static int __maybe_unused
13476 lpfc_pci_suspend_one_s4(struct device *dev_d)
13477 {
13478         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
13479         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13480
13481         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13482                         "2843 PCI device Power Management suspend.\n");
13483
13484         /* Bring down the device */
13485         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13486         lpfc_offline(phba);
13487         kthread_stop(phba->worker_thread);
13488
13489         /* Disable interrupt from device */
13490         lpfc_sli4_disable_intr(phba);
13491         lpfc_sli4_queue_destroy(phba);
13492
13493         return 0;
13494 }
13495
13496 /**
13497  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
13498  * @dev_d: pointer to device
13499  *
13500  * This routine is called from the kernel's PCI subsystem to support system
13501  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
13502  * this method, it restores the device's PCI config space state and fully
13503  * reinitializes the device and brings it online. Note that as the driver
13504  * implements the minimum PM requirements to a power-aware driver's PM for
13505  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
13506  * to the suspend() method call will be treated as SUSPEND and the driver
13507  * will fully reinitialize its device during resume() method call, the device
13508  * will be set to PCI_D0 directly in PCI config space before restoring the
13509  * state.
13510  *
13511  * Return code
13512  *      0 - driver suspended the device
13513  *      Error otherwise
13514  **/
13515 static int __maybe_unused
13516 lpfc_pci_resume_one_s4(struct device *dev_d)
13517 {
13518         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
13519         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13520         uint32_t intr_mode;
13521         int error;
13522
13523         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13524                         "0292 PCI device Power Management resume.\n");
13525
13526          /* Startup the kernel thread for this host adapter. */
13527         phba->worker_thread = kthread_run(lpfc_do_work, phba,
13528                                         "lpfc_worker_%d", phba->brd_no);
13529         if (IS_ERR(phba->worker_thread)) {
13530                 error = PTR_ERR(phba->worker_thread);
13531                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13532                                 "0293 PM resume failed to start worker "
13533                                 "thread: error=x%x.\n", error);
13534                 return error;
13535         }
13536
13537         /* Configure and enable interrupt */
13538         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13539         if (intr_mode == LPFC_INTR_ERROR) {
13540                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13541                                 "0294 PM resume Failed to enable interrupt\n");
13542                 return -EIO;
13543         } else
13544                 phba->intr_mode = intr_mode;
13545
13546         /* Restart HBA and bring it online */
13547         lpfc_sli_brdrestart(phba);
13548         lpfc_online(phba);
13549
13550         /* Log the current active interrupt mode */
13551         lpfc_log_intr_mode(phba, phba->intr_mode);
13552
13553         return 0;
13554 }
13555
13556 /**
13557  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
13558  * @phba: pointer to lpfc hba data structure.
13559  *
13560  * This routine is called to prepare the SLI4 device for PCI slot recover. It
13561  * aborts all the outstanding SCSI I/Os to the pci device.
13562  **/
13563 static void
13564 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
13565 {
13566         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13567                         "2828 PCI channel I/O abort preparing for recovery\n");
13568         /*
13569          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
13570          * and let the SCSI mid-layer to retry them to recover.
13571          */
13572         lpfc_sli_abort_fcp_rings(phba);
13573 }
13574
13575 /**
13576  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
13577  * @phba: pointer to lpfc hba data structure.
13578  *
13579  * This routine is called to prepare the SLI4 device for PCI slot reset. It
13580  * disables the device interrupt and pci device, and aborts the internal FCP
13581  * pending I/Os.
13582  **/
13583 static void
13584 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
13585 {
13586         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13587                         "2826 PCI channel disable preparing for reset\n");
13588
13589         /* Block any management I/Os to the device */
13590         lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
13591
13592         /* Block all SCSI devices' I/Os on the host */
13593         lpfc_scsi_dev_block(phba);
13594
13595         /* Flush all driver's outstanding I/Os as we are to reset */
13596         lpfc_sli_flush_io_rings(phba);
13597
13598         /* stop all timers */
13599         lpfc_stop_hba_timers(phba);
13600
13601         /* Disable interrupt and pci device */
13602         lpfc_sli4_disable_intr(phba);
13603         lpfc_sli4_queue_destroy(phba);
13604         pci_disable_device(phba->pcidev);
13605 }
13606
13607 /**
13608  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
13609  * @phba: pointer to lpfc hba data structure.
13610  *
13611  * This routine is called to prepare the SLI4 device for PCI slot permanently
13612  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
13613  * pending I/Os.
13614  **/
13615 static void
13616 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
13617 {
13618         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13619                         "2827 PCI channel permanent disable for failure\n");
13620
13621         /* Block all SCSI devices' I/Os on the host */
13622         lpfc_scsi_dev_block(phba);
13623
13624         /* stop all timers */
13625         lpfc_stop_hba_timers(phba);
13626
13627         /* Clean up all driver's outstanding I/Os */
13628         lpfc_sli_flush_io_rings(phba);
13629 }
13630
13631 /**
13632  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
13633  * @pdev: pointer to PCI device.
13634  * @state: the current PCI connection state.
13635  *
13636  * This routine is called from the PCI subsystem for error handling to device
13637  * with SLI-4 interface spec. This function is called by the PCI subsystem
13638  * after a PCI bus error affecting this device has been detected. When this
13639  * function is invoked, it will need to stop all the I/Os and interrupt(s)
13640  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
13641  * for the PCI subsystem to perform proper recovery as desired.
13642  *
13643  * Return codes
13644  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13645  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13646  **/
13647 static pci_ers_result_t
13648 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
13649 {
13650         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13651         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13652
13653         switch (state) {
13654         case pci_channel_io_normal:
13655                 /* Non-fatal error, prepare for recovery */
13656                 lpfc_sli4_prep_dev_for_recover(phba);
13657                 return PCI_ERS_RESULT_CAN_RECOVER;
13658         case pci_channel_io_frozen:
13659                 /* Fatal error, prepare for slot reset */
13660                 lpfc_sli4_prep_dev_for_reset(phba);
13661                 return PCI_ERS_RESULT_NEED_RESET;
13662         case pci_channel_io_perm_failure:
13663                 /* Permanent failure, prepare for device down */
13664                 lpfc_sli4_prep_dev_for_perm_failure(phba);
13665                 return PCI_ERS_RESULT_DISCONNECT;
13666         default:
13667                 /* Unknown state, prepare and request slot reset */
13668                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13669                                 "2825 Unknown PCI error state: x%x\n", state);
13670                 lpfc_sli4_prep_dev_for_reset(phba);
13671                 return PCI_ERS_RESULT_NEED_RESET;
13672         }
13673 }
13674
13675 /**
13676  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
13677  * @pdev: pointer to PCI device.
13678  *
13679  * This routine is called from the PCI subsystem for error handling to device
13680  * with SLI-4 interface spec. It is called after PCI bus has been reset to
13681  * restart the PCI card from scratch, as if from a cold-boot. During the
13682  * PCI subsystem error recovery, after the driver returns
13683  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
13684  * recovery and then call this routine before calling the .resume method to
13685  * recover the device. This function will initialize the HBA device, enable
13686  * the interrupt, but it will just put the HBA to offline state without
13687  * passing any I/O traffic.
13688  *
13689  * Return codes
13690  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
13691  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13692  */
13693 static pci_ers_result_t
13694 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
13695 {
13696         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13697         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13698         struct lpfc_sli *psli = &phba->sli;
13699         uint32_t intr_mode;
13700
13701         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
13702         if (pci_enable_device_mem(pdev)) {
13703                 printk(KERN_ERR "lpfc: Cannot re-enable "
13704                         "PCI device after reset.\n");
13705                 return PCI_ERS_RESULT_DISCONNECT;
13706         }
13707
13708         pci_restore_state(pdev);
13709
13710         /*
13711          * As the new kernel behavior of pci_restore_state() API call clears
13712          * device saved_state flag, need to save the restored state again.
13713          */
13714         pci_save_state(pdev);
13715
13716         if (pdev->is_busmaster)
13717                 pci_set_master(pdev);
13718
13719         spin_lock_irq(&phba->hbalock);
13720         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
13721         spin_unlock_irq(&phba->hbalock);
13722
13723         /* Configure and enable interrupt */
13724         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13725         if (intr_mode == LPFC_INTR_ERROR) {
13726                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13727                                 "2824 Cannot re-enable interrupt after "
13728                                 "slot reset.\n");
13729                 return PCI_ERS_RESULT_DISCONNECT;
13730         } else
13731                 phba->intr_mode = intr_mode;
13732
13733         /* Log the current active interrupt mode */
13734         lpfc_log_intr_mode(phba, phba->intr_mode);
13735
13736         return PCI_ERS_RESULT_RECOVERED;
13737 }
13738
13739 /**
13740  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
13741  * @pdev: pointer to PCI device
13742  *
13743  * This routine is called from the PCI subsystem for error handling to device
13744  * with SLI-4 interface spec. It is called when kernel error recovery tells
13745  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
13746  * error recovery. After this call, traffic can start to flow from this device
13747  * again.
13748  **/
13749 static void
13750 lpfc_io_resume_s4(struct pci_dev *pdev)
13751 {
13752         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13753         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13754
13755         /*
13756          * In case of slot reset, as function reset is performed through
13757          * mailbox command which needs DMA to be enabled, this operation
13758          * has to be moved to the io resume phase. Taking device offline
13759          * will perform the necessary cleanup.
13760          */
13761         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
13762                 /* Perform device reset */
13763                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13764                 lpfc_offline(phba);
13765                 lpfc_sli_brdrestart(phba);
13766                 /* Bring the device back online */
13767                 lpfc_online(phba);
13768         }
13769 }
13770
13771 /**
13772  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
13773  * @pdev: pointer to PCI device
13774  * @pid: pointer to PCI device identifier
13775  *
13776  * This routine is to be registered to the kernel's PCI subsystem. When an
13777  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
13778  * at PCI device-specific information of the device and driver to see if the
13779  * driver state that it can support this kind of device. If the match is
13780  * successful, the driver core invokes this routine. This routine dispatches
13781  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
13782  * do all the initialization that it needs to do to handle the HBA device
13783  * properly.
13784  *
13785  * Return code
13786  *      0 - driver can claim the device
13787  *      negative value - driver can not claim the device
13788  **/
13789 static int
13790 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
13791 {
13792         int rc;
13793         struct lpfc_sli_intf intf;
13794
13795         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
13796                 return -ENODEV;
13797
13798         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
13799             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
13800                 rc = lpfc_pci_probe_one_s4(pdev, pid);
13801         else
13802                 rc = lpfc_pci_probe_one_s3(pdev, pid);
13803
13804         return rc;
13805 }
13806
13807 /**
13808  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
13809  * @pdev: pointer to PCI device
13810  *
13811  * This routine is to be registered to the kernel's PCI subsystem. When an
13812  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
13813  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
13814  * remove routine, which will perform all the necessary cleanup for the
13815  * device to be removed from the PCI subsystem properly.
13816  **/
13817 static void
13818 lpfc_pci_remove_one(struct pci_dev *pdev)
13819 {
13820         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13821         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13822
13823         switch (phba->pci_dev_grp) {
13824         case LPFC_PCI_DEV_LP:
13825                 lpfc_pci_remove_one_s3(pdev);
13826                 break;
13827         case LPFC_PCI_DEV_OC:
13828                 lpfc_pci_remove_one_s4(pdev);
13829                 break;
13830         default:
13831                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13832                                 "1424 Invalid PCI device group: 0x%x\n",
13833                                 phba->pci_dev_grp);
13834                 break;
13835         }
13836         return;
13837 }
13838
13839 /**
13840  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
13841  * @dev: pointer to device
13842  *
13843  * This routine is to be registered to the kernel's PCI subsystem to support
13844  * system Power Management (PM). When PM invokes this method, it dispatches
13845  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
13846  * suspend the device.
13847  *
13848  * Return code
13849  *      0 - driver suspended the device
13850  *      Error otherwise
13851  **/
13852 static int __maybe_unused
13853 lpfc_pci_suspend_one(struct device *dev)
13854 {
13855         struct Scsi_Host *shost = dev_get_drvdata(dev);
13856         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13857         int rc = -ENODEV;
13858
13859         switch (phba->pci_dev_grp) {
13860         case LPFC_PCI_DEV_LP:
13861                 rc = lpfc_pci_suspend_one_s3(dev);
13862                 break;
13863         case LPFC_PCI_DEV_OC:
13864                 rc = lpfc_pci_suspend_one_s4(dev);
13865                 break;
13866         default:
13867                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13868                                 "1425 Invalid PCI device group: 0x%x\n",
13869                                 phba->pci_dev_grp);
13870                 break;
13871         }
13872         return rc;
13873 }
13874
13875 /**
13876  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
13877  * @dev: pointer to device
13878  *
13879  * This routine is to be registered to the kernel's PCI subsystem to support
13880  * system Power Management (PM). When PM invokes this method, it dispatches
13881  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
13882  * resume the device.
13883  *
13884  * Return code
13885  *      0 - driver suspended the device
13886  *      Error otherwise
13887  **/
13888 static int __maybe_unused
13889 lpfc_pci_resume_one(struct device *dev)
13890 {
13891         struct Scsi_Host *shost = dev_get_drvdata(dev);
13892         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13893         int rc = -ENODEV;
13894
13895         switch (phba->pci_dev_grp) {
13896         case LPFC_PCI_DEV_LP:
13897                 rc = lpfc_pci_resume_one_s3(dev);
13898                 break;
13899         case LPFC_PCI_DEV_OC:
13900                 rc = lpfc_pci_resume_one_s4(dev);
13901                 break;
13902         default:
13903                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13904                                 "1426 Invalid PCI device group: 0x%x\n",
13905                                 phba->pci_dev_grp);
13906                 break;
13907         }
13908         return rc;
13909 }
13910
13911 /**
13912  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
13913  * @pdev: pointer to PCI device.
13914  * @state: the current PCI connection state.
13915  *
13916  * This routine is registered to the PCI subsystem for error handling. This
13917  * function is called by the PCI subsystem after a PCI bus error affecting
13918  * this device has been detected. When this routine is invoked, it dispatches
13919  * the action to the proper SLI-3 or SLI-4 device error detected handling
13920  * routine, which will perform the proper error detected operation.
13921  *
13922  * Return codes
13923  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13924  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13925  **/
13926 static pci_ers_result_t
13927 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
13928 {
13929         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13930         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13931         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13932
13933         switch (phba->pci_dev_grp) {
13934         case LPFC_PCI_DEV_LP:
13935                 rc = lpfc_io_error_detected_s3(pdev, state);
13936                 break;
13937         case LPFC_PCI_DEV_OC:
13938                 rc = lpfc_io_error_detected_s4(pdev, state);
13939                 break;
13940         default:
13941                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13942                                 "1427 Invalid PCI device group: 0x%x\n",
13943                                 phba->pci_dev_grp);
13944                 break;
13945         }
13946         return rc;
13947 }
13948
13949 /**
13950  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
13951  * @pdev: pointer to PCI device.
13952  *
13953  * This routine is registered to the PCI subsystem for error handling. This
13954  * function is called after PCI bus has been reset to restart the PCI card
13955  * from scratch, as if from a cold-boot. When this routine is invoked, it
13956  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
13957  * routine, which will perform the proper device reset.
13958  *
13959  * Return codes
13960  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
13961  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13962  **/
13963 static pci_ers_result_t
13964 lpfc_io_slot_reset(struct pci_dev *pdev)
13965 {
13966         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13967         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13968         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13969
13970         switch (phba->pci_dev_grp) {
13971         case LPFC_PCI_DEV_LP:
13972                 rc = lpfc_io_slot_reset_s3(pdev);
13973                 break;
13974         case LPFC_PCI_DEV_OC:
13975                 rc = lpfc_io_slot_reset_s4(pdev);
13976                 break;
13977         default:
13978                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13979                                 "1428 Invalid PCI device group: 0x%x\n",
13980                                 phba->pci_dev_grp);
13981                 break;
13982         }
13983         return rc;
13984 }
13985
13986 /**
13987  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
13988  * @pdev: pointer to PCI device
13989  *
13990  * This routine is registered to the PCI subsystem for error handling. It
13991  * is called when kernel error recovery tells the lpfc driver that it is
13992  * OK to resume normal PCI operation after PCI bus error recovery. When
13993  * this routine is invoked, it dispatches the action to the proper SLI-3
13994  * or SLI-4 device io_resume routine, which will resume the device operation.
13995  **/
13996 static void
13997 lpfc_io_resume(struct pci_dev *pdev)
13998 {
13999         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14000         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14001
14002         switch (phba->pci_dev_grp) {
14003         case LPFC_PCI_DEV_LP:
14004                 lpfc_io_resume_s3(pdev);
14005                 break;
14006         case LPFC_PCI_DEV_OC:
14007                 lpfc_io_resume_s4(pdev);
14008                 break;
14009         default:
14010                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14011                                 "1429 Invalid PCI device group: 0x%x\n",
14012                                 phba->pci_dev_grp);
14013                 break;
14014         }
14015         return;
14016 }
14017
14018 /**
14019  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
14020  * @phba: pointer to lpfc hba data structure.
14021  *
14022  * This routine checks to see if OAS is supported for this adapter. If
14023  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
14024  * the enable oas flag is cleared and the pool created for OAS device data
14025  * is destroyed.
14026  *
14027  **/
14028 static void
14029 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
14030 {
14031
14032         if (!phba->cfg_EnableXLane)
14033                 return;
14034
14035         if (phba->sli4_hba.pc_sli4_params.oas_supported) {
14036                 phba->cfg_fof = 1;
14037         } else {
14038                 phba->cfg_fof = 0;
14039                 mempool_destroy(phba->device_data_mem_pool);
14040                 phba->device_data_mem_pool = NULL;
14041         }
14042
14043         return;
14044 }
14045
14046 /**
14047  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
14048  * @phba: pointer to lpfc hba data structure.
14049  *
14050  * This routine checks to see if RAS is supported by the adapter. Check the
14051  * function through which RAS support enablement is to be done.
14052  **/
14053 void
14054 lpfc_sli4_ras_init(struct lpfc_hba *phba)
14055 {
14056         switch (phba->pcidev->device) {
14057         case PCI_DEVICE_ID_LANCER_G6_FC:
14058         case PCI_DEVICE_ID_LANCER_G7_FC:
14059                 phba->ras_fwlog.ras_hwsupport = true;
14060                 if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
14061                     phba->cfg_ras_fwlog_buffsize)
14062                         phba->ras_fwlog.ras_enabled = true;
14063                 else
14064                         phba->ras_fwlog.ras_enabled = false;
14065                 break;
14066         default:
14067                 phba->ras_fwlog.ras_hwsupport = false;
14068         }
14069 }
14070
14071
14072 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
14073
14074 static const struct pci_error_handlers lpfc_err_handler = {
14075         .error_detected = lpfc_io_error_detected,
14076         .slot_reset = lpfc_io_slot_reset,
14077         .resume = lpfc_io_resume,
14078 };
14079
14080 static SIMPLE_DEV_PM_OPS(lpfc_pci_pm_ops_one,
14081                          lpfc_pci_suspend_one,
14082                          lpfc_pci_resume_one);
14083
14084 static struct pci_driver lpfc_driver = {
14085         .name           = LPFC_DRIVER_NAME,
14086         .id_table       = lpfc_id_table,
14087         .probe          = lpfc_pci_probe_one,
14088         .remove         = lpfc_pci_remove_one,
14089         .shutdown       = lpfc_pci_remove_one,
14090         .driver.pm      = &lpfc_pci_pm_ops_one,
14091         .err_handler    = &lpfc_err_handler,
14092 };
14093
14094 static const struct file_operations lpfc_mgmt_fop = {
14095         .owner = THIS_MODULE,
14096 };
14097
14098 static struct miscdevice lpfc_mgmt_dev = {
14099         .minor = MISC_DYNAMIC_MINOR,
14100         .name = "lpfcmgmt",
14101         .fops = &lpfc_mgmt_fop,
14102 };
14103
14104 /**
14105  * lpfc_init - lpfc module initialization routine
14106  *
14107  * This routine is to be invoked when the lpfc module is loaded into the
14108  * kernel. The special kernel macro module_init() is used to indicate the
14109  * role of this routine to the kernel as lpfc module entry point.
14110  *
14111  * Return codes
14112  *   0 - successful
14113  *   -ENOMEM - FC attach transport failed
14114  *   all others - failed
14115  */
14116 static int __init
14117 lpfc_init(void)
14118 {
14119         int error = 0;
14120
14121         pr_info(LPFC_MODULE_DESC "\n");
14122         pr_info(LPFC_COPYRIGHT "\n");
14123
14124         error = misc_register(&lpfc_mgmt_dev);
14125         if (error)
14126                 printk(KERN_ERR "Could not register lpfcmgmt device, "
14127                         "misc_register returned with status %d", error);
14128
14129         error = -ENOMEM;
14130         lpfc_transport_functions.vport_create = lpfc_vport_create;
14131         lpfc_transport_functions.vport_delete = lpfc_vport_delete;
14132         lpfc_transport_template =
14133                                 fc_attach_transport(&lpfc_transport_functions);
14134         if (lpfc_transport_template == NULL)
14135                 goto unregister;
14136         lpfc_vport_transport_template =
14137                 fc_attach_transport(&lpfc_vport_transport_functions);
14138         if (lpfc_vport_transport_template == NULL) {
14139                 fc_release_transport(lpfc_transport_template);
14140                 goto unregister;
14141         }
14142         lpfc_wqe_cmd_template();
14143         lpfc_nvmet_cmd_template();
14144
14145         /* Initialize in case vector mapping is needed */
14146         lpfc_present_cpu = num_present_cpus();
14147
14148         error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
14149                                         "lpfc/sli4:online",
14150                                         lpfc_cpu_online, lpfc_cpu_offline);
14151         if (error < 0)
14152                 goto cpuhp_failure;
14153         lpfc_cpuhp_state = error;
14154
14155         error = pci_register_driver(&lpfc_driver);
14156         if (error)
14157                 goto unwind;
14158
14159         return error;
14160
14161 unwind:
14162         cpuhp_remove_multi_state(lpfc_cpuhp_state);
14163 cpuhp_failure:
14164         fc_release_transport(lpfc_transport_template);
14165         fc_release_transport(lpfc_vport_transport_template);
14166 unregister:
14167         misc_deregister(&lpfc_mgmt_dev);
14168
14169         return error;
14170 }
14171
14172 void lpfc_dmp_dbg(struct lpfc_hba *phba)
14173 {
14174         unsigned int start_idx;
14175         unsigned int dbg_cnt;
14176         unsigned int temp_idx;
14177         int i;
14178         int j = 0;
14179         unsigned long rem_nsec;
14180         struct lpfc_vport **vports;
14181
14182         /* Don't dump messages if we explicitly set log_verbose for the
14183          * physical port or any vport.
14184          */
14185         if (phba->cfg_log_verbose)
14186                 return;
14187
14188         vports = lpfc_create_vport_work_array(phba);
14189         if (vports != NULL) {
14190                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
14191                         if (vports[i]->cfg_log_verbose) {
14192                                 lpfc_destroy_vport_work_array(phba, vports);
14193                                 return;
14194                         }
14195                 }
14196         }
14197         lpfc_destroy_vport_work_array(phba, vports);
14198
14199         if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
14200                 return;
14201
14202         start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
14203         dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
14204         if (!dbg_cnt)
14205                 goto out;
14206         temp_idx = start_idx;
14207         if (dbg_cnt >= DBG_LOG_SZ) {
14208                 dbg_cnt = DBG_LOG_SZ;
14209                 temp_idx -= 1;
14210         } else {
14211                 if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
14212                         temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
14213                 } else {
14214                         if (start_idx < dbg_cnt)
14215                                 start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
14216                         else
14217                                 start_idx -= dbg_cnt;
14218                 }
14219         }
14220         dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
14221                  start_idx, temp_idx, dbg_cnt);
14222
14223         for (i = 0; i < dbg_cnt; i++) {
14224                 if ((start_idx + i) < DBG_LOG_SZ)
14225                         temp_idx = (start_idx + i) % DBG_LOG_SZ;
14226                 else
14227                         temp_idx = j++;
14228                 rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
14229                 dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
14230                          temp_idx,
14231                          (unsigned long)phba->dbg_log[temp_idx].t_ns,
14232                          rem_nsec / 1000,
14233                          phba->dbg_log[temp_idx].log);
14234         }
14235 out:
14236         atomic_set(&phba->dbg_log_cnt, 0);
14237         atomic_set(&phba->dbg_log_dmping, 0);
14238 }
14239
14240 __printf(2, 3)
14241 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
14242 {
14243         unsigned int idx;
14244         va_list args;
14245         int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
14246         struct va_format vaf;
14247
14248
14249         va_start(args, fmt);
14250         if (unlikely(dbg_dmping)) {
14251                 vaf.fmt = fmt;
14252                 vaf.va = &args;
14253                 dev_info(&phba->pcidev->dev, "%pV", &vaf);
14254                 va_end(args);
14255                 return;
14256         }
14257         idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
14258                 DBG_LOG_SZ;
14259
14260         atomic_inc(&phba->dbg_log_cnt);
14261
14262         vscnprintf(phba->dbg_log[idx].log,
14263                    sizeof(phba->dbg_log[idx].log), fmt, args);
14264         va_end(args);
14265
14266         phba->dbg_log[idx].t_ns = local_clock();
14267 }
14268
14269 /**
14270  * lpfc_exit - lpfc module removal routine
14271  *
14272  * This routine is invoked when the lpfc module is removed from the kernel.
14273  * The special kernel macro module_exit() is used to indicate the role of
14274  * this routine to the kernel as lpfc module exit point.
14275  */
14276 static void __exit
14277 lpfc_exit(void)
14278 {
14279         misc_deregister(&lpfc_mgmt_dev);
14280         pci_unregister_driver(&lpfc_driver);
14281         cpuhp_remove_multi_state(lpfc_cpuhp_state);
14282         fc_release_transport(lpfc_transport_template);
14283         fc_release_transport(lpfc_vport_transport_template);
14284         idr_destroy(&lpfc_hba_index);
14285 }
14286
14287 module_init(lpfc_init);
14288 module_exit(lpfc_exit);
14289 MODULE_LICENSE("GPL");
14290 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
14291 MODULE_AUTHOR("Broadcom");
14292 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);