drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9 #include "qla_target.h"
  10
  11 #include <linux/moduleparam.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15
  16 #include <scsi/scsi_tcq.h>
  17 #include <scsi/scsicam.h>
  18 #include <linux/delay.h>
  19
  20 void
  21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  22 {
  23         if (vha->vp_idx && vha->timer_active) {
  24                 del_timer_sync(&vha->timer);
  25                 vha->timer_active = 0;
  26         }
  27 }
  28
  29 static uint32_t
  30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  31 {
  32         uint32_t vp_id;
  33         struct qla_hw_data *ha = vha->hw;
  34         unsigned long flags;
  35
  36         /* Find an empty slot and assign an vp_id */
  37         mutex_lock(&ha->vport_lock);
  38         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  39         if (vp_id > ha->max_npiv_vports) {
  40                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  41                     "vp_id %d is bigger than max-supported %d.\n",
  42                     vp_id, ha->max_npiv_vports);
  43                 mutex_unlock(&ha->vport_lock);
  44                 return vp_id;
  45         }
  46
  47         set_bit(vp_id, ha->vp_idx_map);
  48         ha->num_vhosts++;
  49         vha->vp_idx = vp_id;
  50
  51         spin_lock_irqsave(&ha->vport_slock, flags);
  52         list_add_tail(&vha->list, &ha->vp_list);
  53
  54         qlt_update_vp_map(vha, SET_VP_IDX);
  55
  56         spin_unlock_irqrestore(&ha->vport_slock, flags);
  57
  58         mutex_unlock(&ha->vport_lock);
  59         return vp_id;
  60 }
  61
  62 void
  63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  64 {
  65         uint16_t vp_id;
  66         struct qla_hw_data *ha = vha->hw;
  67         unsigned long flags = 0;
  68
  69         mutex_lock(&ha->vport_lock);
  70         /*
  71          * Wait for all pending activities to finish before removing vport from
  72          * the list.
  73          * Lock needs to be held for safe removal from the list (it
  74          * ensures no active vp_list traversal while the vport is removed
  75          * from the queue)
  76          */
  77         spin_lock_irqsave(&ha->vport_slock, flags);
  78         while (atomic_read(&vha->vref_count)) {
  79                 spin_unlock_irqrestore(&ha->vport_slock, flags);
  80
  81                 msleep(500);
  82
  83                 spin_lock_irqsave(&ha->vport_slock, flags);
  84         }
  85         list_del(&vha->list);
  86         qlt_update_vp_map(vha, RESET_VP_IDX);
  87         spin_unlock_irqrestore(&ha->vport_slock, flags);
  88
  89         vp_id = vha->vp_idx;
  90         ha->num_vhosts--;
  91         clear_bit(vp_id, ha->vp_idx_map);
  92
  93         mutex_unlock(&ha->vport_lock);
  94 }
  95
  96 static scsi_qla_host_t *
  97 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  98 {
  99         scsi_qla_host_t *vha;
 100         struct scsi_qla_host *tvha;
 101         unsigned long flags;
 102
 103         spin_lock_irqsave(&ha->vport_slock, flags);
 104         /* Locate matching device in database. */
 105         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 106                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 107                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 108                         return vha;
 109                 }
 110         }
 111         spin_unlock_irqrestore(&ha->vport_slock, flags);
 112         return NULL;
 113 }
 114
 115 /*
 116  * qla2x00_mark_vp_devices_dead
 117  *      Updates fcport state when device goes offline.
 118  *
 119  * Input:
 120  *      ha = adapter block pointer.
 121  *      fcport = port structure pointer.
 122  *
 123  * Return:
 124  *      None.
 125  *
 126  * Context:
 127  */
 128 static void
 129 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 130 {
 131         /*
 132          * !!! NOTE !!!
 133          * This function, if called in contexts other than vp create, disable
 134          * or delete, please make sure this is synchronized with the
 135          * delete thread.
 136          */
 137         fc_port_t *fcport;
 138
 139         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 140                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 141                     "Marking port dead, loop_id=0x%04x : %x.\n",
 142                     fcport->loop_id, fcport->vha->vp_idx);
 143
 144                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 145                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 146         }
 147 }
 148
 149 int
 150 qla24xx_disable_vp(scsi_qla_host_t *vha)
 151 {
 152         unsigned long flags;
 153         int ret;
 154
 155         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 156         atomic_set(&vha->loop_state, LOOP_DOWN);
 157         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 158
 159         /* Remove port id from vp target map */
 160         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 161         qlt_update_vp_map(vha, RESET_AL_PA);
 162         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 163
 164         qla2x00_mark_vp_devices_dead(vha);
 165         atomic_set(&vha->vp_state, VP_FAILED);
 166         vha->flags.management_server_logged_in = 0;
 167         if (ret == QLA_SUCCESS) {
 168                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 169         } else {
 170                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 171                 return -1;
 172         }
 173         return 0;
 174 }
 175
 176 int
 177 qla24xx_enable_vp(scsi_qla_host_t *vha)
 178 {
 179         int ret;
 180         struct qla_hw_data *ha = vha->hw;
 181         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 182
 183         /* Check if physical ha port is Up */
 184         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 185                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 186                 !(ha->current_topology & ISP_CFG_F)) {
 187                 vha->vp_err_state =  VP_ERR_PORTDWN;
 188                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 189                 goto enable_failed;
 190         }
 191
 192         /* Initialize the new vport unless it is a persistent port */
 193         mutex_lock(&ha->vport_lock);
 194         ret = qla24xx_modify_vp_config(vha);
 195         mutex_unlock(&ha->vport_lock);
 196
 197         if (ret != QLA_SUCCESS) {
 198                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 199                 goto enable_failed;
 200         }
 201
 202         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 203             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 204         return 0;
 205
 206 enable_failed:
 207         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 208             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 209         return 1;
 210 }
 211
 212 static void
 213 qla24xx_configure_vp(scsi_qla_host_t *vha)
 214 {
 215         struct fc_vport *fc_vport;
 216         int ret;
 217
 218         fc_vport = vha->fc_vport;
 219
 220         ql_dbg(ql_dbg_vport, vha, 0xa002,
 221             "%s: change request #3.\n", __func__);
 222         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 223         if (ret != QLA_SUCCESS) {
 224                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 225                     "receiving of RSCN requests: 0x%x.\n", ret);
 226                 return;
 227         } else {
 228                 /* Corresponds to SCR enabled */
 229                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 230         }
 231
 232         vha->flags.online = 1;
 233         if (qla24xx_configure_vhba(vha))
 234                 return;
 235
 236         atomic_set(&vha->vp_state, VP_ACTIVE);
 237         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 238 }
 239
 240 void
 241 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 242 {
 243         scsi_qla_host_t *vha;
 244         struct qla_hw_data *ha = rsp->hw;
 245         int i = 0;
 246         unsigned long flags;
 247
 248         spin_lock_irqsave(&ha->vport_slock, flags);
 249         list_for_each_entry(vha, &ha->vp_list, list) {
 250                 if (vha->vp_idx) {
 251                         atomic_inc(&vha->vref_count);
 252                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 253
 254                         switch (mb[0]) {
 255                         case MBA_LIP_OCCURRED:
 256                         case MBA_LOOP_UP:
 257                         case MBA_LOOP_DOWN:
 258                         case MBA_LIP_RESET:
 259                         case MBA_POINT_TO_POINT:
 260                         case MBA_CHG_IN_CONNECTION:
 261                         case MBA_PORT_UPDATE:
 262                         case MBA_RSCN_UPDATE:
 263                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 264                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 265                                     i, *mb, vha);
 266                                 qla2x00_async_event(vha, rsp, mb);
 267                                 break;
 268                         }
 269
 270                         spin_lock_irqsave(&ha->vport_slock, flags);
 271                         atomic_dec(&vha->vref_count);
 272                 }
 273                 i++;
 274         }
 275         spin_unlock_irqrestore(&ha->vport_slock, flags);
 276 }
 277
 278 int
 279 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 280 {
 281         /*
 282          * Physical port will do most of the abort and recovery work. We can
 283          * just treat it as a loop down
 284          */
 285         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 286                 atomic_set(&vha->loop_state, LOOP_DOWN);
 287                 qla2x00_mark_all_devices_lost(vha, 0);
 288         } else {
 289                 if (!atomic_read(&vha->loop_down_timer))
 290                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 291         }
 292
 293         /*
 294          * To exclusively reset vport, we need to log it out first.  Note: this
 295          * control_vp can fail if ISP reset is already issued, this is
 296          * expected, as the vp would be already logged out due to ISP reset.
 297          */
 298         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 299                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 300
 301         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 302             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 303         return qla24xx_enable_vp(vha);
 304 }
 305
 306 static int
 307 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 308 {
 309         struct qla_hw_data *ha = vha->hw;
 310         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 311
 312         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 313             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 314
 315         qla2x00_do_work(vha);
 316
 317         /* Check if Fw is ready to configure VP first */
 318         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 319                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 320                         /* VP acquired. complete port configuration */
 321                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 322                             "Configure VP scheduled.\n");
 323                         qla24xx_configure_vp(vha);
 324                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 325                             "Configure VP end.\n");
 326                         return 0;
 327                 }
 328         }
 329
 330         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 331                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 332                     "FCPort update scheduled.\n");
 333                 qla2x00_update_fcports(vha);
 334                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 335                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 336                     "FCPort update end.\n");
 337         }
 338
 339         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 340                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 341                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 342
 343                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 344                     "Relogin needed scheduled.\n");
 345                 qla2x00_relogin(vha);
 346                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 347                     "Relogin needed end.\n");
 348         }
 349
 350         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 351             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 352                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 353         }
 354
 355         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 356                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 357                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 358                             "Loop resync scheduled.\n");
 359                         qla2x00_loop_resync(vha);
 360                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 361                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 362                             "Loop resync end.\n");
 363                 }
 364         }
 365
 366         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 367             "Exiting %s.\n", __func__);
 368         return 0;
 369 }
 370
 371 void
 372 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 373 {
 374         struct qla_hw_data *ha = vha->hw;
 375         scsi_qla_host_t *vp;
 376         unsigned long flags = 0;
 377
 378         if (vha->vp_idx)
 379                 return;
 380         if (list_empty(&ha->vp_list))
 381                 return;
 382
 383         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 384
 385         if (!(ha->current_topology & ISP_CFG_F))
 386                 return;
 387
 388         spin_lock_irqsave(&ha->vport_slock, flags);
 389         list_for_each_entry(vp, &ha->vp_list, list) {
 390                 if (vp->vp_idx) {
 391                         atomic_inc(&vp->vref_count);
 392                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 393
 394                         qla2x00_do_dpc_vp(vp);
 395
 396                         spin_lock_irqsave(&ha->vport_slock, flags);
 397                         atomic_dec(&vp->vref_count);
 398                 }
 399         }
 400         spin_unlock_irqrestore(&ha->vport_slock, flags);
 401 }
 402
 403 int
 404 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 405 {
 406         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 407         struct qla_hw_data *ha = base_vha->hw;
 408         scsi_qla_host_t *vha;
 409         uint8_t port_name[WWN_SIZE];
 410
 411         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 412                 return VPCERR_UNSUPPORTED;
 413
 414         /* Check up the F/W and H/W support NPIV */
 415         if (!ha->flags.npiv_supported)
 416                 return VPCERR_UNSUPPORTED;
 417
 418         /* Check up whether npiv supported switch presented */
 419         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 420                 return VPCERR_NO_FABRIC_SUPP;
 421
 422         /* Check up unique WWPN */
 423         u64_to_wwn(fc_vport->port_name, port_name);
 424         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 425                 return VPCERR_BAD_WWN;
 426         vha = qla24xx_find_vhost_by_name(ha, port_name);
 427         if (vha)
 428                 return VPCERR_BAD_WWN;
 429
 430         /* Check up max-npiv-supports */
 431         if (ha->num_vhosts > ha->max_npiv_vports) {
 432                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 433                     "num_vhosts %ud is bigger "
 434                     "than max_npiv_vports %ud.\n",
 435                     ha->num_vhosts, ha->max_npiv_vports);
 436                 return VPCERR_UNSUPPORTED;
 437         }
 438         return 0;
 439 }
 440
 441 scsi_qla_host_t *
 442 qla24xx_create_vhost(struct fc_vport *fc_vport)
 443 {
 444         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 445         struct qla_hw_data *ha = base_vha->hw;
 446         scsi_qla_host_t *vha;
 447         struct scsi_host_template *sht = &qla2xxx_driver_template;
 448         struct Scsi_Host *host;
 449
 450         vha = qla2x00_create_host(sht, ha);
 451         if (!vha) {
 452                 ql_log(ql_log_warn, vha, 0xa005,
 453                     "scsi_host_alloc() failed for vport.\n");
 454                 return(NULL);
 455         }
 456
 457         host = vha->host;
 458         fc_vport->dd_data = vha;
 459         /* New host info */
 460         u64_to_wwn(fc_vport->node_name, vha->node_name);
 461         u64_to_wwn(fc_vport->port_name, vha->port_name);
 462
 463         vha->fc_vport = fc_vport;
 464         vha->device_flags = 0;
 465         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 466         if (vha->vp_idx > ha->max_npiv_vports) {
 467                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 468                     "Couldn't allocate vp_id.\n");
 469                 goto create_vhost_failed;
 470         }
 471         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 472
 473         vha->dpc_flags = 0L;
 474
 475         /*
 476          * To fix the issue of processing a parent's RSCN for the vport before
 477          * its SCR is complete.
 478          */
 479         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 480         atomic_set(&vha->loop_state, LOOP_DOWN);
 481         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 482
 483         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 484
 485         vha->req = base_vha->req;
 486         host->can_queue = base_vha->req->length + 128;
 487         host->cmd_per_lun = 3;
 488         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 489                 host->max_cmd_len = 32;
 490         else
 491                 host->max_cmd_len = MAX_CMDSZ;
 492         host->max_channel = MAX_BUSES - 1;
 493         host->max_lun = ql2xmaxlun;
 494         host->unique_id = host->host_no;
 495         host->max_id = ha->max_fibre_devices;
 496         host->transportt = qla2xxx_transport_vport_template;
 497
 498         ql_dbg(ql_dbg_vport, vha, 0xa007,
 499             "Detect vport hba %ld at address = %p.\n",
 500             vha->host_no, vha);
 501
 502         vha->flags.init_done = 1;
 503
 504         mutex_lock(&ha->vport_lock);
 505         set_bit(vha->vp_idx, ha->vp_idx_map);
 506         ha->cur_vport_count++;
 507         mutex_unlock(&ha->vport_lock);
 508
 509         return vha;
 510
 511 create_vhost_failed:
 512         return NULL;
 513 }
 514
 515 static void
 516 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 517 {
 518         struct qla_hw_data *ha = vha->hw;
 519         uint16_t que_id = req->id;
 520
 521         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 522                 sizeof(request_t), req->ring, req->dma);
 523         req->ring = NULL;
 524         req->dma = 0;
 525         if (que_id) {
 526                 ha->req_q_map[que_id] = NULL;
 527                 mutex_lock(&ha->vport_lock);
 528                 clear_bit(que_id, ha->req_qid_map);
 529                 mutex_unlock(&ha->vport_lock);
 530         }
 531         kfree(req->outstanding_cmds);
 532         kfree(req);
 533         req = NULL;
 534 }
 535
 536 static void
 537 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 538 {
 539         struct qla_hw_data *ha = vha->hw;
 540         uint16_t que_id = rsp->id;
 541
 542         if (rsp->msix && rsp->msix->have_irq) {
 543                 free_irq(rsp->msix->vector, rsp);
 544                 rsp->msix->have_irq = 0;
 545                 rsp->msix->rsp = NULL;
 546         }
 547         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 548                 sizeof(response_t), rsp->ring, rsp->dma);
 549         rsp->ring = NULL;
 550         rsp->dma = 0;
 551         if (que_id) {
 552                 ha->rsp_q_map[que_id] = NULL;
 553                 mutex_lock(&ha->vport_lock);
 554                 clear_bit(que_id, ha->rsp_qid_map);
 555                 mutex_unlock(&ha->vport_lock);
 556         }
 557         kfree(rsp);
 558         rsp = NULL;
 559 }
 560
 561 int
 562 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 563 {
 564         int ret = -1;
 565
 566         if (req) {
 567                 req->options |= BIT_0;
 568                 ret = qla25xx_init_req_que(vha, req);
 569         }
 570         if (ret == QLA_SUCCESS)
 571                 qla25xx_free_req_que(vha, req);
 572
 573         return ret;
 574 }
 575
 576 static int
 577 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 578 {
 579         int ret = -1;
 580
 581         if (rsp) {
 582                 rsp->options |= BIT_0;
 583                 ret = qla25xx_init_rsp_que(vha, rsp);
 584         }
 585         if (ret == QLA_SUCCESS)
 586                 qla25xx_free_rsp_que(vha, rsp);
 587
 588         return ret;
 589 }
 590
 591 /* Delete all queues for a given vhost */
 592 int
 593 qla25xx_delete_queues(struct scsi_qla_host *vha)
 594 {
 595         int cnt, ret = 0;
 596         struct req_que *req = NULL;
 597         struct rsp_que *rsp = NULL;
 598         struct qla_hw_data *ha = vha->hw;
 599
 600         /* Delete request queues */
 601         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 602                 req = ha->req_q_map[cnt];
 603                 if (req) {
 604                         ret = qla25xx_delete_req_que(vha, req);
 605                         if (ret != QLA_SUCCESS) {
 606                                 ql_log(ql_log_warn, vha, 0x00ea,
 607                                     "Couldn't delete req que %d.\n",
 608                                     req->id);
 609                                 return ret;
 610                         }
 611                 }
 612         }
 613
 614         /* Delete response queues */
 615         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 616                 rsp = ha->rsp_q_map[cnt];
 617                 if (rsp) {
 618                         ret = qla25xx_delete_rsp_que(vha, rsp);
 619                         if (ret != QLA_SUCCESS) {
 620                                 ql_log(ql_log_warn, vha, 0x00eb,
 621                                     "Couldn't delete rsp que %d.\n",
 622                                     rsp->id);
 623                                 return ret;
 624                         }
 625                 }
 626         }
 627         return ret;
 628 }
 629
 630 int
 631 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 632         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 633 {
 634         int ret = 0;
 635         struct req_que *req = NULL;
 636         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 637         uint16_t que_id = 0;
 638         device_reg_t *reg;
 639         uint32_t cnt;
 640
 641         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 642         if (req == NULL) {
 643                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 644                     "Failed to allocate memory for request queue.\n");
 645                 goto failed;
 646         }
 647
 648         req->length = REQUEST_ENTRY_CNT_24XX;
 649         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 650                         (req->length + 1) * sizeof(request_t),
 651                         &req->dma, GFP_KERNEL);
 652         if (req->ring == NULL) {
 653                 ql_log(ql_log_fatal, base_vha, 0x00da,
 654                     "Failed to allocate memory for request_ring.\n");
 655                 goto que_failed;
 656         }
 657
 658         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 659         if (ret != QLA_SUCCESS)
 660                 goto que_failed;
 661
 662         mutex_lock(&ha->vport_lock);
 663         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 664         if (que_id >= ha->max_req_queues) {
 665                 mutex_unlock(&ha->vport_lock);
 666                 ql_log(ql_log_warn, base_vha, 0x00db,
 667                     "No resources to create additional request queue.\n");
 668                 goto que_failed;
 669         }
 670         set_bit(que_id, ha->req_qid_map);
 671         ha->req_q_map[que_id] = req;
 672         req->rid = rid;
 673         req->vp_idx = vp_idx;
 674         req->qos = qos;
 675
 676         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 677             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 678             que_id, req->rid, req->vp_idx, req->qos);
 679         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 680             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 681             que_id, req->rid, req->vp_idx, req->qos);
 682         if (rsp_que < 0)
 683                 req->rsp = NULL;
 684         else
 685                 req->rsp = ha->rsp_q_map[rsp_que];
 686         /* Use alternate PCI bus number */
 687         if (MSB(req->rid))
 688                 options |= BIT_4;
 689         /* Use alternate PCI devfn */
 690         if (LSB(req->rid))
 691                 options |= BIT_5;
 692         req->options = options;
 693
 694         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 695             "options=0x%x.\n", req->options);
 696         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 697             "options=0x%x.\n", req->options);
 698         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 699                 req->outstanding_cmds[cnt] = NULL;
 700         req->current_outstanding_cmd = 1;
 701
 702         req->ring_ptr = req->ring;
 703         req->ring_index = 0;
 704         req->cnt = req->length;
 705         req->id = que_id;
 706         reg = ISP_QUE_REG(ha, que_id);
 707         req->req_q_in = &reg->isp25mq.req_q_in;
 708         req->req_q_out = &reg->isp25mq.req_q_out;
 709         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 710         req->out_ptr = (void *)(req->ring + req->length);
 711         mutex_unlock(&ha->vport_lock);
 712         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 713             "ring_ptr=%p ring_index=%d, "
 714             "cnt=%d id=%d max_q_depth=%d.\n",
 715             req->ring_ptr, req->ring_index,
 716             req->cnt, req->id, req->max_q_depth);
 717         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 718             "ring_ptr=%p ring_index=%d, "
 719             "cnt=%d id=%d max_q_depth=%d.\n",
 720             req->ring_ptr, req->ring_index, req->cnt,
 721             req->id, req->max_q_depth);
 722
 723         ret = qla25xx_init_req_que(base_vha, req);
 724         if (ret != QLA_SUCCESS) {
 725                 ql_log(ql_log_fatal, base_vha, 0x00df,
 726                     "%s failed.\n", __func__);
 727                 mutex_lock(&ha->vport_lock);
 728                 clear_bit(que_id, ha->req_qid_map);
 729                 mutex_unlock(&ha->vport_lock);
 730                 goto que_failed;
 731         }
 732
 733         return req->id;
 734
 735 que_failed:
 736         qla25xx_free_req_que(base_vha, req);
 737 failed:
 738         return 0;
 739 }
 740
 741 static void qla_do_work(struct work_struct *work)
 742 {
 743         unsigned long flags;
 744         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 745         struct scsi_qla_host *vha;
 746         struct qla_hw_data *ha = rsp->hw;
 747
 748         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 749         vha = pci_get_drvdata(ha->pdev);
 750         qla24xx_process_response_queue(vha, rsp);
 751         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 752 }
 753
 754 /* create response queue */
 755 int
 756 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 757         uint8_t vp_idx, uint16_t rid, int req)
 758 {
 759         int ret = 0;
 760         struct rsp_que *rsp = NULL;
 761         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 762         uint16_t que_id = 0;
 763         device_reg_t *reg;
 764
 765         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 766         if (rsp == NULL) {
 767                 ql_log(ql_log_warn, base_vha, 0x0066,
 768                     "Failed to allocate memory for response queue.\n");
 769                 goto failed;
 770         }
 771
 772         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 773         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 774                         (rsp->length + 1) * sizeof(response_t),
 775                         &rsp->dma, GFP_KERNEL);
 776         if (rsp->ring == NULL) {
 777                 ql_log(ql_log_warn, base_vha, 0x00e1,
 778                     "Failed to allocate memory for response ring.\n");
 779                 goto que_failed;
 780         }
 781
 782         mutex_lock(&ha->vport_lock);
 783         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 784         if (que_id >= ha->max_rsp_queues) {
 785                 mutex_unlock(&ha->vport_lock);
 786                 ql_log(ql_log_warn, base_vha, 0x00e2,
 787                     "No resources to create additional request queue.\n");
 788                 goto que_failed;
 789         }
 790         set_bit(que_id, ha->rsp_qid_map);
 791
 792         if (ha->flags.msix_enabled)
 793                 rsp->msix = &ha->msix_entries[que_id + 1];
 794         else
 795                 ql_log(ql_log_warn, base_vha, 0x00e3,
 796                     "MSIX not enabled.\n");
 797
 798         ha->rsp_q_map[que_id] = rsp;
 799         rsp->rid = rid;
 800         rsp->vp_idx = vp_idx;
 801         rsp->hw = ha;
 802         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 803             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 804             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 805         /* Use alternate PCI bus number */
 806         if (MSB(rsp->rid))
 807                 options |= BIT_4;
 808         /* Use alternate PCI devfn */
 809         if (LSB(rsp->rid))
 810                 options |= BIT_5;
 811         /* Enable MSIX handshake mode on for uncapable adapters */
 812         if (!IS_MSIX_NACK_CAPABLE(ha))
 813                 options |= BIT_6;
 814
 815         rsp->options = options;
 816         rsp->id = que_id;
 817         reg = ISP_QUE_REG(ha, que_id);
 818         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 819         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 820         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 821         mutex_unlock(&ha->vport_lock);
 822         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 823             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 824             rsp->options, rsp->id, rsp->rsp_q_in,
 825             rsp->rsp_q_out);
 826         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 827             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 828             rsp->options, rsp->id, rsp->rsp_q_in,
 829             rsp->rsp_q_out);
 830
 831         ret = qla25xx_request_irq(rsp);
 832         if (ret)
 833                 goto que_failed;
 834
 835         ret = qla25xx_init_rsp_que(base_vha, rsp);
 836         if (ret != QLA_SUCCESS) {
 837                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 838                     "%s failed.\n", __func__);
 839                 mutex_lock(&ha->vport_lock);
 840                 clear_bit(que_id, ha->rsp_qid_map);
 841                 mutex_unlock(&ha->vport_lock);
 842                 goto que_failed;
 843         }
 844         if (req >= 0)
 845                 rsp->req = ha->req_q_map[req];
 846         else
 847                 rsp->req = NULL;
 848
 849         qla2x00_init_response_q_entries(rsp);
 850         if (rsp->hw->wq)
 851                 INIT_WORK(&rsp->q_work, qla_do_work);
 852         return rsp->id;
 853
 854 que_failed:
 855         qla25xx_free_rsp_que(base_vha, rsp);
 856 failed:
 857         return 0;
 858 }