drivers/scsi/qedf/qedf_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  QLogic FCoE Offload Driver
   4  *  Copyright (c) 2016-2018 Cavium Inc.
   5  */
   6 #include <linux/init.h>
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/pci.h>
  10 #include <linux/device.h>
  11 #include <linux/highmem.h>
  12 #include <linux/crc32.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/phylink.h>
  17 #include <scsi/libfc.h>
  18 #include <scsi/scsi_host.h>
  19 #include <scsi/fc_frame.h>
  20 #include <linux/if_ether.h>
  21 #include <linux/if_vlan.h>
  22 #include <linux/cpu.h>
  23 #include "qedf.h"
  24 #include "qedf_dbg.h"
  25 #include <uapi/linux/pci_regs.h>
  26
  27 const struct qed_fcoe_ops *qed_ops;
  28
  29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  30 static void qedf_remove(struct pci_dev *pdev);
  31 static void qedf_shutdown(struct pci_dev *pdev);
  32 static void qedf_schedule_recovery_handler(void *dev);
  33 static void qedf_recovery_handler(struct work_struct *work);
  34 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state);
  35
  36 /*
  37  * Driver module parameters.
  38  */
  39 static unsigned int qedf_dev_loss_tmo = 60;
  40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  41 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  42         "remote ports (default 60)");
  43
  44 uint qedf_debug = QEDF_LOG_INFO;
  45 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
  46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  47         " mask");
  48
  49 static uint qedf_fipvlan_retries = 60;
  50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  52         "before giving up (default 60)");
  53
  54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  57         "(default 1002).");
  58
  59 static int qedf_default_prio = -1;
  60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  61 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  62         " traffic (value between 0 and 7, default 3).");
  63
  64 uint qedf_dump_frames;
  65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  67         "(default off)");
  68
  69 static uint qedf_queue_depth;
  70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  72         "by the qedf driver. Default is 0 (use OS default).");
  73
  74 uint qedf_io_tracing;
  75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  77         "into trace buffer. (default off).");
  78
  79 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  82         "supports. (default 0xffffffff)");
  83
  84 uint qedf_link_down_tmo;
  85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  87         "link is down by N seconds.");
  88
  89 bool qedf_retry_delay;
  90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  92         "delay handling (default off).");
  93
  94 static bool qedf_dcbx_no_wait;
  95 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  96 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  97         "sending FIP VLAN requests on link up (Default: off).");
  98
  99 static uint qedf_dp_module;
 100 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
 101 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
 102         "qed module during probe.");
 103
 104 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 105 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 106 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 107         "during probe (0-3: 0 more verbose).");
 108
 109 static bool qedf_enable_recovery = true;
 110 module_param_named(enable_recovery, qedf_enable_recovery,
 111                 bool, S_IRUGO | S_IWUSR);
 112 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
 113                 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
 114
 115 struct workqueue_struct *qedf_io_wq;
 116
 117 static struct fcoe_percpu_s qedf_global;
 118 static DEFINE_SPINLOCK(qedf_global_lock);
 119
 120 static struct kmem_cache *qedf_io_work_cache;
 121
 122 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 123 {
 124         int vlan_id_tmp = 0;
 125
 126         vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
 127         qedf->vlan_id = vlan_id_tmp;
 128         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 129                   "Setting vlan_id=0x%04x prio=%d.\n",
 130                   vlan_id_tmp, qedf->prio);
 131 }
 132
 133 /* Returns true if we have a valid vlan, false otherwise */
 134 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 135 {
 136
 137         while (qedf->fipvlan_retries--) {
 138                 /* This is to catch if link goes down during fipvlan retries */
 139                 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 140                         QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 141                         return false;
 142                 }
 143
 144                 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 145                         QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
 146                         return false;
 147                 }
 148
 149                 if (qedf->vlan_id > 0) {
 150                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 151                                   "vlan = 0x%x already set, calling ctlr_link_up.\n",
 152                                   qedf->vlan_id);
 153                         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 154                                 fcoe_ctlr_link_up(&qedf->ctlr);
 155                         return true;
 156                 }
 157
 158                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 159                            "Retry %d.\n", qedf->fipvlan_retries);
 160                 init_completion(&qedf->fipvlan_compl);
 161                 qedf_fcoe_send_vlan_req(qedf);
 162                 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
 163         }
 164
 165         return false;
 166 }
 167
 168 static void qedf_handle_link_update(struct work_struct *work)
 169 {
 170         struct qedf_ctx *qedf =
 171             container_of(work, struct qedf_ctx, link_update.work);
 172         int rc;
 173
 174         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
 175                   atomic_read(&qedf->link_state));
 176
 177         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 178                 rc = qedf_initiate_fipvlan_req(qedf);
 179                 if (rc)
 180                         return;
 181
 182                 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 183                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 184                                   "Link is down, resetting vlan_id.\n");
 185                         qedf->vlan_id = 0;
 186                         return;
 187                 }
 188
 189                 /*
 190                  * If we get here then we never received a repsonse to our
 191                  * fip vlan request so set the vlan_id to the default and
 192                  * tell FCoE that the link is up
 193                  */
 194                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 195                            "response, falling back to default VLAN %d.\n",
 196                            qedf_fallback_vlan);
 197                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 198
 199                 /*
 200                  * Zero out data_src_addr so we'll update it with the new
 201                  * lport port_id
 202                  */
 203                 eth_zero_addr(qedf->data_src_addr);
 204                 fcoe_ctlr_link_up(&qedf->ctlr);
 205         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 206                 /*
 207                  * If we hit here and link_down_tmo_valid is still 1 it means
 208                  * that link_down_tmo timed out so set it to 0 to make sure any
 209                  * other readers have accurate state.
 210                  */
 211                 atomic_set(&qedf->link_down_tmo_valid, 0);
 212                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 213                     "Calling fcoe_ctlr_link_down().\n");
 214                 fcoe_ctlr_link_down(&qedf->ctlr);
 215                 if (qedf_wait_for_upload(qedf) == false)
 216                         QEDF_ERR(&qedf->dbg_ctx,
 217                                  "Could not upload all sessions.\n");
 218                 /* Reset the number of FIP VLAN retries */
 219                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 220         }
 221 }
 222
 223 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 224 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 225 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 226 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 227 {
 228         u8 *granted_mac;
 229         struct fc_frame_header *fh = fc_frame_header_get(fp);
 230         u8 fc_map[3];
 231         int method = 0;
 232
 233         /* Get granted MAC address from FIP FLOGI payload */
 234         granted_mac = fr_cb(fp)->granted_mac;
 235
 236         /*
 237          * We set the source MAC for FCoE traffic based on the Granted MAC
 238          * address from the switch.
 239          *
 240          * If granted_mac is non-zero, we used that.
 241          * If the granted_mac is zeroed out, created the FCoE MAC based on
 242          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 243          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 244          * d_id of the FLOGI frame.
 245          */
 246         if (!is_zero_ether_addr(granted_mac)) {
 247                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 248                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 249         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 250                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 251                 qedf->data_src_addr[0] = fc_map[0];
 252                 qedf->data_src_addr[1] = fc_map[1];
 253                 qedf->data_src_addr[2] = fc_map[2];
 254                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 255                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 256                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 257                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 258         } else {
 259                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 260                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 261         }
 262
 263         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 264             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 265 }
 266
 267 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 268         void *arg)
 269 {
 270         struct fc_exch *exch = fc_seq_exch(seq);
 271         struct fc_lport *lport = exch->lp;
 272         struct qedf_ctx *qedf = lport_priv(lport);
 273
 274         if (!qedf) {
 275                 QEDF_ERR(NULL, "qedf is NULL.\n");
 276                 return;
 277         }
 278
 279         /*
 280          * If ERR_PTR is set then don't try to stat anything as it will cause
 281          * a crash when we access fp.
 282          */
 283         if (IS_ERR(fp)) {
 284                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 285                     "fp has IS_ERR() set.\n");
 286                 goto skip_stat;
 287         }
 288
 289         /* Log stats for FLOGI reject */
 290         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 291                 qedf->flogi_failed++;
 292         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 293                 /* Set the source MAC we will use for FCoE traffic */
 294                 qedf_set_data_src_addr(qedf, fp);
 295                 qedf->flogi_pending = 0;
 296         }
 297
 298         /* Complete flogi_compl so we can proceed to sending ADISCs */
 299         complete(&qedf->flogi_compl);
 300
 301 skip_stat:
 302         /* Report response to libfc */
 303         fc_lport_flogi_resp(seq, fp, lport);
 304 }
 305
 306 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 307         struct fc_frame *fp, unsigned int op,
 308         void (*resp)(struct fc_seq *,
 309         struct fc_frame *,
 310         void *),
 311         void *arg, u32 timeout)
 312 {
 313         struct qedf_ctx *qedf = lport_priv(lport);
 314
 315         /*
 316          * Intercept FLOGI for statistic purposes. Note we use the resp
 317          * callback to tell if this is really a flogi.
 318          */
 319         if (resp == fc_lport_flogi_resp) {
 320                 qedf->flogi_cnt++;
 321                 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 322                         schedule_delayed_work(&qedf->stag_work, 2);
 323                         return NULL;
 324                 }
 325                 qedf->flogi_pending++;
 326                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 327                     arg, timeout);
 328         }
 329
 330         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 331 }
 332
 333 int qedf_send_flogi(struct qedf_ctx *qedf)
 334 {
 335         struct fc_lport *lport;
 336         struct fc_frame *fp;
 337
 338         lport = qedf->lport;
 339
 340         if (!lport->tt.elsct_send) {
 341                 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 342                 return -EINVAL;
 343         }
 344
 345         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 346         if (!fp) {
 347                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 348                 return -ENOMEM;
 349         }
 350
 351         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 352             "Sending FLOGI to reestablish session with switch.\n");
 353         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 354             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 355
 356         init_completion(&qedf->flogi_compl);
 357
 358         return 0;
 359 }
 360
 361 /*
 362  * This function is called if link_down_tmo is in use.  If we get a link up and
 363  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 364  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 365  */
 366 static void qedf_link_recovery(struct work_struct *work)
 367 {
 368         struct qedf_ctx *qedf =
 369             container_of(work, struct qedf_ctx, link_recovery.work);
 370         struct fc_lport *lport = qedf->lport;
 371         struct fc_rport_priv *rdata;
 372         bool rc;
 373         int retries = 30;
 374         int rval, i;
 375         struct list_head rdata_login_list;
 376
 377         INIT_LIST_HEAD(&rdata_login_list);
 378
 379         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 380             "Link down tmo did not expire.\n");
 381
 382         /*
 383          * Essentially reset the fcoe_ctlr here without affecting the state
 384          * of the libfc structs.
 385          */
 386         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 387         fcoe_ctlr_link_down(&qedf->ctlr);
 388
 389         /*
 390          * Bring the link up before we send the fipvlan request so libfcoe
 391          * can select a new fcf in parallel
 392          */
 393         fcoe_ctlr_link_up(&qedf->ctlr);
 394
 395         /* Since the link when down and up to verify which vlan we're on */
 396         qedf->fipvlan_retries = qedf_fipvlan_retries;
 397         rc = qedf_initiate_fipvlan_req(qedf);
 398         /* If getting the VLAN fails, set the VLAN to the fallback one */
 399         if (!rc)
 400                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 401
 402         /*
 403          * We need to wait for an FCF to be selected due to the
 404          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 405          */
 406         while (retries > 0) {
 407                 if (qedf->ctlr.sel_fcf) {
 408                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 409                             "FCF reselected, proceeding with FLOGI.\n");
 410                         break;
 411                 }
 412                 msleep(500);
 413                 retries--;
 414         }
 415
 416         if (retries < 1) {
 417                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 418                     "FCF selection.\n");
 419                 return;
 420         }
 421
 422         rval = qedf_send_flogi(qedf);
 423         if (rval)
 424                 return;
 425
 426         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 427         i = wait_for_completion_timeout(&qedf->flogi_compl,
 428             qedf->lport->r_a_tov);
 429         if (i == 0) {
 430                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 431                 return;
 432         }
 433
 434         /*
 435          * Call lport->tt.rport_login which will cause libfc to send an
 436          * ADISC since the rport is in state ready.
 437          */
 438         mutex_lock(&lport->disc.disc_mutex);
 439         list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 440                 if (kref_get_unless_zero(&rdata->kref)) {
 441                         fc_rport_login(rdata);
 442                         kref_put(&rdata->kref, fc_rport_destroy);
 443                 }
 444         }
 445         mutex_unlock(&lport->disc.disc_mutex);
 446 }
 447
 448 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 449         struct qed_link_output *link)
 450 {
 451         __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
 452         struct fc_lport *lport = qedf->lport;
 453
 454         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 455         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 456
 457         /* Set fc_host link speed */
 458         switch (link->speed) {
 459         case 10000:
 460                 lport->link_speed = FC_PORTSPEED_10GBIT;
 461                 break;
 462         case 25000:
 463                 lport->link_speed = FC_PORTSPEED_25GBIT;
 464                 break;
 465         case 40000:
 466                 lport->link_speed = FC_PORTSPEED_40GBIT;
 467                 break;
 468         case 50000:
 469                 lport->link_speed = FC_PORTSPEED_50GBIT;
 470                 break;
 471         case 100000:
 472                 lport->link_speed = FC_PORTSPEED_100GBIT;
 473                 break;
 474         case 20000:
 475                 lport->link_speed = FC_PORTSPEED_20GBIT;
 476                 break;
 477         default:
 478                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 479                 break;
 480         }
 481
 482         /*
 483          * Set supported link speed by querying the supported
 484          * capabilities of the link.
 485          */
 486
 487         phylink_zero(sup_caps);
 488         phylink_set(sup_caps, 10000baseT_Full);
 489         phylink_set(sup_caps, 10000baseKX4_Full);
 490         phylink_set(sup_caps, 10000baseR_FEC);
 491         phylink_set(sup_caps, 10000baseCR_Full);
 492         phylink_set(sup_caps, 10000baseSR_Full);
 493         phylink_set(sup_caps, 10000baseLR_Full);
 494         phylink_set(sup_caps, 10000baseLRM_Full);
 495         phylink_set(sup_caps, 10000baseKR_Full);
 496
 497         if (linkmode_intersects(link->supported_caps, sup_caps))
 498                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 499
 500         phylink_zero(sup_caps);
 501         phylink_set(sup_caps, 25000baseKR_Full);
 502         phylink_set(sup_caps, 25000baseCR_Full);
 503         phylink_set(sup_caps, 25000baseSR_Full);
 504
 505         if (linkmode_intersects(link->supported_caps, sup_caps))
 506                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 507
 508         phylink_zero(sup_caps);
 509         phylink_set(sup_caps, 40000baseLR4_Full);
 510         phylink_set(sup_caps, 40000baseKR4_Full);
 511         phylink_set(sup_caps, 40000baseCR4_Full);
 512         phylink_set(sup_caps, 40000baseSR4_Full);
 513
 514         if (linkmode_intersects(link->supported_caps, sup_caps))
 515                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 516
 517         phylink_zero(sup_caps);
 518         phylink_set(sup_caps, 50000baseKR2_Full);
 519         phylink_set(sup_caps, 50000baseCR2_Full);
 520         phylink_set(sup_caps, 50000baseSR2_Full);
 521
 522         if (linkmode_intersects(link->supported_caps, sup_caps))
 523                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 524
 525         phylink_zero(sup_caps);
 526         phylink_set(sup_caps, 100000baseKR4_Full);
 527         phylink_set(sup_caps, 100000baseSR4_Full);
 528         phylink_set(sup_caps, 100000baseCR4_Full);
 529         phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 530
 531         if (linkmode_intersects(link->supported_caps, sup_caps))
 532                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 533
 534         phylink_zero(sup_caps);
 535         phylink_set(sup_caps, 20000baseKR2_Full);
 536
 537         if (linkmode_intersects(link->supported_caps, sup_caps))
 538                 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 539
 540         if (lport->host && lport->host->shost_data)
 541                 fc_host_supported_speeds(lport->host) =
 542                         lport->link_supported_speeds;
 543 }
 544
 545 static void qedf_bw_update(void *dev)
 546 {
 547         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 548         struct qed_link_output link;
 549
 550         /* Get the latest status of the link */
 551         qed_ops->common->get_link(qedf->cdev, &link);
 552
 553         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 554                 QEDF_ERR(&qedf->dbg_ctx,
 555                          "Ignore link update, driver getting unload.\n");
 556                 return;
 557         }
 558
 559         if (link.link_up) {
 560                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 561                         qedf_update_link_speed(qedf, &link);
 562                 else
 563                         QEDF_ERR(&qedf->dbg_ctx,
 564                                  "Ignore bw update, link is down.\n");
 565
 566         } else {
 567                 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
 568         }
 569 }
 570
 571 static void qedf_link_update(void *dev, struct qed_link_output *link)
 572 {
 573         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 574
 575         /*
 576          * Prevent race where we're removing the module and we get link update
 577          * for qed.
 578          */
 579         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 580                 QEDF_ERR(&qedf->dbg_ctx,
 581                          "Ignore link update, driver getting unload.\n");
 582                 return;
 583         }
 584
 585         if (link->link_up) {
 586                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 587                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 588                             "Ignoring link up event as link is already up.\n");
 589                         return;
 590                 }
 591                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 592                     link->speed / 1000);
 593
 594                 /* Cancel any pending link down work */
 595                 cancel_delayed_work(&qedf->link_update);
 596
 597                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 598                 qedf_update_link_speed(qedf, link);
 599
 600                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 601                     qedf_dcbx_no_wait) {
 602                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 603                              "DCBx done.\n");
 604                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 605                                 queue_delayed_work(qedf->link_update_wq,
 606                                     &qedf->link_recovery, 0);
 607                         else
 608                                 queue_delayed_work(qedf->link_update_wq,
 609                                     &qedf->link_update, 0);
 610                         atomic_set(&qedf->link_down_tmo_valid, 0);
 611                 }
 612
 613         } else {
 614                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 615
 616                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 617                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 618                 /*
 619                  * Flag that we're waiting for the link to come back up before
 620                  * informing the fcoe layer of the event.
 621                  */
 622                 if (qedf_link_down_tmo > 0) {
 623                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 624                             "Starting link down tmo.\n");
 625                         atomic_set(&qedf->link_down_tmo_valid, 1);
 626                 }
 627                 qedf->vlan_id = 0;
 628                 qedf_update_link_speed(qedf, link);
 629                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 630                     qedf_link_down_tmo * HZ);
 631         }
 632 }
 633
 634
 635 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 636 {
 637         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 638         u8 tmp_prio;
 639
 640         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 641             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 642             get->operational.app_prio.fcoe);
 643
 644         if (get->operational.enabled && get->operational.valid) {
 645                 /* If DCBX was already negotiated on link up then just exit */
 646                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 647                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 648                             "DCBX already set on link up.\n");
 649                         return;
 650                 }
 651
 652                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 653
 654                 /*
 655                  * Set the 8021q priority in the following manner:
 656                  *
 657                  * 1. If a modparam is set use that
 658                  * 2. If the value is not between 0..7 use the default
 659                  * 3. Use the priority we get from the DCBX app tag
 660                  */
 661                 tmp_prio = get->operational.app_prio.fcoe;
 662                 if (qedf_default_prio > -1)
 663                         qedf->prio = qedf_default_prio;
 664                 else if (tmp_prio > 7) {
 665                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 666                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 667                             tmp_prio, QEDF_DEFAULT_PRIO);
 668                         qedf->prio = QEDF_DEFAULT_PRIO;
 669                 } else
 670                         qedf->prio = tmp_prio;
 671
 672                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 673                     !qedf_dcbx_no_wait) {
 674                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 675                                 queue_delayed_work(qedf->link_update_wq,
 676                                     &qedf->link_recovery, 0);
 677                         else
 678                                 queue_delayed_work(qedf->link_update_wq,
 679                                     &qedf->link_update, 0);
 680                         atomic_set(&qedf->link_down_tmo_valid, 0);
 681                 }
 682         }
 683
 684 }
 685
 686 static u32 qedf_get_login_failures(void *cookie)
 687 {
 688         struct qedf_ctx *qedf;
 689
 690         qedf = (struct qedf_ctx *)cookie;
 691         return qedf->flogi_failed;
 692 }
 693
 694 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 695         {
 696                 .link_update = qedf_link_update,
 697                 .bw_update = qedf_bw_update,
 698                 .schedule_recovery_handler = qedf_schedule_recovery_handler,
 699                 .dcbx_aen = qedf_dcbx_handler,
 700                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 701                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 702                 .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
 703         }
 704 };
 705
 706 /*
 707  * Various transport templates.
 708  */
 709
 710 static struct scsi_transport_template *qedf_fc_transport_template;
 711 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 712
 713 /*
 714  * SCSI EH handlers
 715  */
 716 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 717 {
 718         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 719         struct fc_lport *lport;
 720         struct qedf_ctx *qedf;
 721         struct qedf_ioreq *io_req;
 722         struct fc_rport_libfc_priv *rp = rport->dd_data;
 723         struct fc_rport_priv *rdata;
 724         struct qedf_rport *fcport = NULL;
 725         int rc = FAILED;
 726         int wait_count = 100;
 727         int refcount = 0;
 728         int rval;
 729         int got_ref = 0;
 730
 731         lport = shost_priv(sc_cmd->device->host);
 732         qedf = (struct qedf_ctx *)lport_priv(lport);
 733
 734         /* rport and tgt are allocated together, so tgt should be non-NULL */
 735         fcport = (struct qedf_rport *)&rp[1];
 736         rdata = fcport->rdata;
 737         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 738                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 739                 rc = SUCCESS;
 740                 goto out;
 741         }
 742
 743
 744         io_req = qedf_priv(sc_cmd)->io_req;
 745         if (!io_req) {
 746                 QEDF_ERR(&qedf->dbg_ctx,
 747                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 748                          sc_cmd, sc_cmd->cmnd[0],
 749                          rdata->ids.port_id);
 750                 rc = SUCCESS;
 751                 goto drop_rdata_kref;
 752         }
 753
 754         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 755         if (rval)
 756                 got_ref = 1;
 757
 758         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 759         if (!rval || io_req->sc_cmd != sc_cmd) {
 760                 QEDF_ERR(&qedf->dbg_ctx,
 761                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 762                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 763
 764                 goto drop_rdata_kref;
 765         }
 766
 767         if (fc_remote_port_chkready(rport)) {
 768                 refcount = kref_read(&io_req->refcount);
 769                 QEDF_ERR(&qedf->dbg_ctx,
 770                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 771                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 772                          refcount, rdata->ids.port_id);
 773
 774                 goto drop_rdata_kref;
 775         }
 776
 777         rc = fc_block_rport(rport);
 778         if (rc)
 779                 goto drop_rdata_kref;
 780
 781         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 782                 QEDF_ERR(&qedf->dbg_ctx,
 783                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 784                          io_req->xid, rdata->ids.port_id);
 785                 while (io_req->sc_cmd && (wait_count != 0)) {
 786                         msleep(100);
 787                         wait_count--;
 788                 }
 789                 if (wait_count) {
 790                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 791                         rc = SUCCESS;
 792                 } else {
 793                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 794                         rc = FAILED;
 795                 }
 796                 goto drop_rdata_kref;
 797         }
 798
 799         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 800                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 801                 goto drop_rdata_kref;
 802         }
 803
 804         QEDF_ERR(&qedf->dbg_ctx,
 805                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 806                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 807                  rdata->ids.port_id);
 808
 809         if (qedf->stop_io_on_error) {
 810                 qedf_stop_all_io(qedf);
 811                 rc = SUCCESS;
 812                 goto drop_rdata_kref;
 813         }
 814
 815         init_completion(&io_req->abts_done);
 816         rval = qedf_initiate_abts(io_req, true);
 817         if (rval) {
 818                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 819                 /*
 820                  * If we fail to queue the ABTS then return this command to
 821                  * the SCSI layer as it will own and free the xid
 822                  */
 823                 rc = SUCCESS;
 824                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 825                 goto drop_rdata_kref;
 826         }
 827
 828         wait_for_completion(&io_req->abts_done);
 829
 830         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 831             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 832             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 833                 /*
 834                  * If we get a reponse to the abort this is success from
 835                  * the perspective that all references to the command have
 836                  * been removed from the driver and firmware
 837                  */
 838                 rc = SUCCESS;
 839         } else {
 840                 /* If the abort and cleanup failed then return a failure */
 841                 rc = FAILED;
 842         }
 843
 844         if (rc == SUCCESS)
 845                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 846                           io_req->xid);
 847         else
 848                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 849                           io_req->xid);
 850
 851 drop_rdata_kref:
 852         kref_put(&rdata->kref, fc_rport_destroy);
 853 out:
 854         if (got_ref)
 855                 kref_put(&io_req->refcount, qedf_release_cmd);
 856         return rc;
 857 }
 858
 859 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 860 {
 861         struct scsi_target *starget = scsi_target(sc_cmd->device);
 862         struct fc_rport *rport = starget_to_rport(starget);
 863
 864         QEDF_ERR(NULL, "TARGET RESET Issued...");
 865         return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET);
 866 }
 867
 868 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 869 {
 870         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 871
 872         QEDF_ERR(NULL, "LUN RESET Issued...\n");
 873         return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET);
 874 }
 875
 876 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 877 {
 878         struct qedf_rport *fcport;
 879         int wait_cnt = 120;
 880
 881         while (wait_cnt--) {
 882                 if (atomic_read(&qedf->num_offloads))
 883                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 884                                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 885                                   atomic_read(&qedf->num_offloads));
 886                 else
 887                         return true;
 888                 msleep(500);
 889         }
 890
 891         rcu_read_lock();
 892         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 893                 if (test_bit(QEDF_RPORT_SESSION_READY,
 894                                        &fcport->flags)) {
 895                         if (fcport->rdata)
 896                                 QEDF_ERR(&qedf->dbg_ctx,
 897                                          "Waiting for fcport %p portid=%06x.\n",
 898                                          fcport, fcport->rdata->ids.port_id);
 899                         } else {
 900                                 QEDF_ERR(&qedf->dbg_ctx,
 901                                          "Waiting for fcport %p.\n", fcport);
 902                         }
 903         }
 904
 905         rcu_read_unlock();
 906         return false;
 907 }
 908
 909 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 910 void qedf_ctx_soft_reset(struct fc_lport *lport)
 911 {
 912         struct qedf_ctx *qedf;
 913         struct qed_link_output if_link;
 914
 915         if (lport->vport) {
 916                 printk_ratelimited("Cannot issue host reset on NPIV port.\n");
 917                 return;
 918         }
 919
 920         qedf = lport_priv(lport);
 921
 922         qedf->flogi_pending = 0;
 923         /* For host reset, essentially do a soft link up/down */
 924         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 925         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 926                   "Queuing link down work.\n");
 927         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 928             0);
 929
 930         if (qedf_wait_for_upload(qedf) == false) {
 931                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 932                 WARN_ON(atomic_read(&qedf->num_offloads));
 933         }
 934
 935         /* Before setting link up query physical link state */
 936         qed_ops->common->get_link(qedf->cdev, &if_link);
 937         /* Bail if the physical link is not up */
 938         if (!if_link.link_up) {
 939                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 940                           "Physical link is not up.\n");
 941                 return;
 942         }
 943         /* Flush and wait to make sure link down is processed */
 944         flush_delayed_work(&qedf->link_update);
 945         msleep(500);
 946
 947         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 948         qedf->vlan_id  = 0;
 949         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 950                   "Queue link up work.\n");
 951         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 952             0);
 953 }
 954
 955 /* Reset the host by gracefully logging out and then logging back in */
 956 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 957 {
 958         struct fc_lport *lport;
 959         struct qedf_ctx *qedf;
 960
 961         lport = shost_priv(sc_cmd->device->host);
 962         qedf = lport_priv(lport);
 963
 964         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 965             test_bit(QEDF_UNLOADING, &qedf->flags))
 966                 return FAILED;
 967
 968         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 969
 970         qedf_ctx_soft_reset(lport);
 971
 972         return SUCCESS;
 973 }
 974
 975 static int qedf_slave_configure(struct scsi_device *sdev)
 976 {
 977         if (qedf_queue_depth) {
 978                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 979         }
 980
 981         return 0;
 982 }
 983
 984 static const struct scsi_host_template qedf_host_template = {
 985         .module         = THIS_MODULE,
 986         .name           = QEDF_MODULE_NAME,
 987         .this_id        = -1,
 988         .cmd_per_lun    = 32,
 989         .max_sectors    = 0xffff,
 990         .queuecommand   = qedf_queuecommand,
 991         .shost_groups   = qedf_host_groups,
 992         .eh_abort_handler       = qedf_eh_abort,
 993         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 994         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 995         .eh_host_reset_handler  = qedf_eh_host_reset,
 996         .slave_configure        = qedf_slave_configure,
 997         .dma_boundary = QED_HW_DMA_BOUNDARY,
 998         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 999         .can_queue = FCOE_PARAMS_NUM_TASKS,
1000         .change_queue_depth = scsi_change_queue_depth,
1001         .cmd_size = sizeof(struct qedf_cmd_priv),
1002 };
1003
1004 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1005 {
1006         int rc;
1007
1008         spin_lock(&qedf_global_lock);
1009         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1010         spin_unlock(&qedf_global_lock);
1011
1012         return rc;
1013 }
1014
1015 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1016 {
1017         struct qedf_rport *fcport;
1018         struct fc_rport_priv *rdata;
1019
1020         rcu_read_lock();
1021         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1022                 rdata = fcport->rdata;
1023                 if (rdata == NULL)
1024                         continue;
1025                 if (rdata->ids.port_id == port_id) {
1026                         rcu_read_unlock();
1027                         return fcport;
1028                 }
1029         }
1030         rcu_read_unlock();
1031
1032         /* Return NULL to caller to let them know fcport was not found */
1033         return NULL;
1034 }
1035
1036 /* Transmits an ELS frame over an offloaded session */
1037 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1038 {
1039         struct fc_frame_header *fh;
1040         int rc = 0;
1041
1042         fh = fc_frame_header_get(fp);
1043         if ((fh->fh_type == FC_TYPE_ELS) &&
1044             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1045                 switch (fc_frame_payload_op(fp)) {
1046                 case ELS_ADISC:
1047                         qedf_send_adisc(fcport, fp);
1048                         rc = 1;
1049                         break;
1050                 }
1051         }
1052
1053         return rc;
1054 }
1055
1056 /*
1057  * qedf_xmit - qedf FCoE frame transmit function
1058  */
1059 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1060 {
1061         struct fc_lport         *base_lport;
1062         struct qedf_ctx         *qedf;
1063         struct ethhdr           *eh;
1064         struct fcoe_crc_eof     *cp;
1065         struct sk_buff          *skb;
1066         struct fc_frame_header  *fh;
1067         struct fcoe_hdr         *hp;
1068         u8                      sof, eof;
1069         u32                     crc;
1070         unsigned int            hlen, tlen, elen;
1071         int                     wlen;
1072         struct fc_lport *tmp_lport;
1073         struct fc_lport *vn_port = NULL;
1074         struct qedf_rport *fcport;
1075         int rc;
1076         u16 vlan_tci = 0;
1077
1078         qedf = (struct qedf_ctx *)lport_priv(lport);
1079
1080         fh = fc_frame_header_get(fp);
1081         skb = fp_skb(fp);
1082
1083         /* Filter out traffic to other NPIV ports on the same host */
1084         if (lport->vport)
1085                 base_lport = shost_priv(vport_to_shost(lport->vport));
1086         else
1087                 base_lport = lport;
1088
1089         /* Flag if the destination is the base port */
1090         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1091                 vn_port = base_lport;
1092         } else {
1093                 /* Got through the list of vports attached to the base_lport
1094                  * and see if we have a match with the destination address.
1095                  */
1096                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1097                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1098                                 vn_port = tmp_lport;
1099                                 break;
1100                         }
1101                 }
1102         }
1103         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1104                 struct fc_rport_priv *rdata = NULL;
1105
1106                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1107                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1108                 kfree_skb(skb);
1109                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1110                 if (rdata) {
1111                         rdata->retries = lport->max_rport_retry_count;
1112                         kref_put(&rdata->kref, fc_rport_destroy);
1113                 }
1114                 return -EINVAL;
1115         }
1116         /* End NPIV filtering */
1117
1118         if (!qedf->ctlr.sel_fcf) {
1119                 kfree_skb(skb);
1120                 return 0;
1121         }
1122
1123         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1124                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1125                 kfree_skb(skb);
1126                 return 0;
1127         }
1128
1129         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1130                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1131                 kfree_skb(skb);
1132                 return 0;
1133         }
1134
1135         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1136                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1137                         return 0;
1138         }
1139
1140         /* Check to see if this needs to be sent on an offloaded session */
1141         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1142
1143         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1144                 rc = qedf_xmit_l2_frame(fcport, fp);
1145                 /*
1146                  * If the frame was successfully sent over the middle path
1147                  * then do not try to also send it over the LL2 path
1148                  */
1149                 if (rc)
1150                         return 0;
1151         }
1152
1153         sof = fr_sof(fp);
1154         eof = fr_eof(fp);
1155
1156         elen = sizeof(struct ethhdr);
1157         hlen = sizeof(struct fcoe_hdr);
1158         tlen = sizeof(struct fcoe_crc_eof);
1159         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1160
1161         skb->ip_summed = CHECKSUM_NONE;
1162         crc = fcoe_fc_crc(fp);
1163
1164         /* copy port crc and eof to the skb buff */
1165         if (skb_is_nonlinear(skb)) {
1166                 skb_frag_t *frag;
1167
1168                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1169                         kfree_skb(skb);
1170                         return -ENOMEM;
1171                 }
1172                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1173                 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1174         } else {
1175                 cp = skb_put(skb, tlen);
1176         }
1177
1178         memset(cp, 0, sizeof(*cp));
1179         cp->fcoe_eof = eof;
1180         cp->fcoe_crc32 = cpu_to_le32(~crc);
1181         if (skb_is_nonlinear(skb)) {
1182                 kunmap_atomic(cp);
1183                 cp = NULL;
1184         }
1185
1186
1187         /* adjust skb network/transport offsets to match mac/fcoe/port */
1188         skb_push(skb, elen + hlen);
1189         skb_reset_mac_header(skb);
1190         skb_reset_network_header(skb);
1191         skb->mac_len = elen;
1192         skb->protocol = htons(ETH_P_FCOE);
1193
1194         /*
1195          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1196          * for FIP/FCoE traffic.
1197          */
1198         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1199
1200         /* fill up mac and fcoe headers */
1201         eh = eth_hdr(skb);
1202         eh->h_proto = htons(ETH_P_FCOE);
1203         if (qedf->ctlr.map_dest)
1204                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1205         else
1206                 /* insert GW address */
1207                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1208
1209         /* Set the source MAC address */
1210         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1211
1212         hp = (struct fcoe_hdr *)(eh + 1);
1213         memset(hp, 0, sizeof(*hp));
1214         if (FC_FCOE_VER)
1215                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1216         hp->fcoe_sof = sof;
1217
1218         /*update tx stats */
1219         this_cpu_inc(lport->stats->TxFrames);
1220         this_cpu_add(lport->stats->TxWords, wlen);
1221
1222         /* Get VLAN ID from skb for printing purposes */
1223         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1224
1225         /* send down to lld */
1226         fr_dev(fp) = lport;
1227         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1228             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1229             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1230             vlan_tci);
1231         if (qedf_dump_frames)
1232                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1233                     1, skb->data, skb->len, false);
1234         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1235         if (rc) {
1236                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1237                 kfree_skb(skb);
1238                 return rc;
1239         }
1240
1241         return 0;
1242 }
1243
1244 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1245 {
1246         int rval = 0;
1247         u32 *pbl;
1248         dma_addr_t page;
1249         int num_pages;
1250
1251         /* Calculate appropriate queue and PBL sizes */
1252         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1253         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1254         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1255             sizeof(void *);
1256         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1257
1258         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1259                                         &fcport->sq_dma, GFP_KERNEL);
1260         if (!fcport->sq) {
1261                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1262                 rval = 1;
1263                 goto out;
1264         }
1265
1266         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1267                                             fcport->sq_pbl_size,
1268                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1269         if (!fcport->sq_pbl) {
1270                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1271                 rval = 1;
1272                 goto out_free_sq;
1273         }
1274
1275         /* Create PBL */
1276         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1277         page = fcport->sq_dma;
1278         pbl = (u32 *)fcport->sq_pbl;
1279
1280         while (num_pages--) {
1281                 *pbl = U64_LO(page);
1282                 pbl++;
1283                 *pbl = U64_HI(page);
1284                 pbl++;
1285                 page += QEDF_PAGE_SIZE;
1286         }
1287
1288         return rval;
1289
1290 out_free_sq:
1291         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1292             fcport->sq_dma);
1293 out:
1294         return rval;
1295 }
1296
1297 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1298 {
1299         if (fcport->sq_pbl)
1300                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1301                     fcport->sq_pbl, fcport->sq_pbl_dma);
1302         if (fcport->sq)
1303                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1304                     fcport->sq, fcport->sq_dma);
1305 }
1306
1307 static int qedf_offload_connection(struct qedf_ctx *qedf,
1308         struct qedf_rport *fcport)
1309 {
1310         struct qed_fcoe_params_offload conn_info;
1311         u32 port_id;
1312         int rval;
1313         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1314
1315         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1316                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1317         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1318             &fcport->fw_cid, &fcport->p_doorbell);
1319         if (rval) {
1320                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1321                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1322                 rval = 1; /* For some reason qed returns 0 on failure here */
1323                 goto out;
1324         }
1325
1326         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1327                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1328                    fcport->fw_cid, fcport->handle);
1329
1330         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1331
1332         /* Fill in the offload connection info */
1333         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1334
1335         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1336         conn_info.sq_next_page_addr =
1337             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1338
1339         /* Need to use our FCoE MAC for the offload session */
1340         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1341
1342         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1343
1344         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1345         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1346         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1347         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1348
1349         /* Set VLAN data */
1350         conn_info.vlan_tag = qedf->vlan_id <<
1351             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1352         conn_info.vlan_tag |=
1353             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1354         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1355             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1356
1357         /* Set host port source id */
1358         port_id = fc_host_port_id(qedf->lport->host);
1359         fcport->sid = port_id;
1360         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1361         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1362         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1363
1364         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1365
1366         /* Set remote port destination id */
1367         port_id = fcport->rdata->rport->port_id;
1368         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1369         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1370         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1371
1372         conn_info.def_q_idx = 0; /* Default index for send queue? */
1373
1374         /* Set FC-TAPE specific flags if needed */
1375         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1376                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1377                     "Enable CONF, REC for portid=%06x.\n",
1378                     fcport->rdata->ids.port_id);
1379                 conn_info.flags |= 1 <<
1380                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1381                 conn_info.flags |=
1382                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1383                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1384         }
1385
1386         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1387         if (rval) {
1388                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1389                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1390                 goto out_free_conn;
1391         } else
1392                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1393                            "succeeded portid=%06x total_sqe=%d.\n",
1394                            fcport->rdata->ids.port_id, total_sqe);
1395
1396         spin_lock_init(&fcport->rport_lock);
1397         atomic_set(&fcport->free_sqes, total_sqe);
1398         return 0;
1399 out_free_conn:
1400         qed_ops->release_conn(qedf->cdev, fcport->handle);
1401 out:
1402         return rval;
1403 }
1404
1405 #define QEDF_TERM_BUFF_SIZE             10
1406 static void qedf_upload_connection(struct qedf_ctx *qedf,
1407         struct qedf_rport *fcport)
1408 {
1409         void *term_params;
1410         dma_addr_t term_params_dma;
1411
1412         /* Term params needs to be a DMA coherent buffer as qed shared the
1413          * physical DMA address with the firmware. The buffer may be used in
1414          * the receive path so we may eventually have to move this.
1415          */
1416         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1417                 &term_params_dma, GFP_KERNEL);
1418         if (!term_params)
1419                 return;
1420
1421         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1422                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1423
1424         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1425         qed_ops->release_conn(qedf->cdev, fcport->handle);
1426
1427         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1428             term_params_dma);
1429 }
1430
1431 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1432         struct qedf_rport *fcport)
1433 {
1434         struct fc_rport_priv *rdata = fcport->rdata;
1435
1436         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1437             fcport->rdata->ids.port_id);
1438
1439         /* Flush any remaining i/o's before we upload the connection */
1440         qedf_flush_active_ios(fcport, -1);
1441
1442         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1443                 qedf_upload_connection(qedf, fcport);
1444         qedf_free_sq(qedf, fcport);
1445         fcport->rdata = NULL;
1446         fcport->qedf = NULL;
1447         kref_put(&rdata->kref, fc_rport_destroy);
1448 }
1449
1450 /*
1451  * This event_callback is called after successful completion of libfc
1452  * initiated target login. qedf can proceed with initiating the session
1453  * establishment.
1454  */
1455 static void qedf_rport_event_handler(struct fc_lport *lport,
1456                                 struct fc_rport_priv *rdata,
1457                                 enum fc_rport_event event)
1458 {
1459         struct qedf_ctx *qedf = lport_priv(lport);
1460         struct fc_rport *rport = rdata->rport;
1461         struct fc_rport_libfc_priv *rp;
1462         struct qedf_rport *fcport;
1463         u32 port_id;
1464         int rval;
1465         unsigned long flags;
1466
1467         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1468                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1469
1470         switch (event) {
1471         case RPORT_EV_READY:
1472                 if (!rport) {
1473                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1474                         break;
1475                 }
1476
1477                 rp = rport->dd_data;
1478                 fcport = (struct qedf_rport *)&rp[1];
1479                 fcport->qedf = qedf;
1480
1481                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1482                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1483                             "portid=0x%x as max number of offloaded sessions "
1484                             "reached.\n", rdata->ids.port_id);
1485                         return;
1486                 }
1487
1488                 /*
1489                  * Don't try to offload the session again. Can happen when we
1490                  * get an ADISC
1491                  */
1492                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1493                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1494                                    "offloaded, portid=0x%x.\n",
1495                                    rdata->ids.port_id);
1496                         return;
1497                 }
1498
1499                 if (rport->port_id == FC_FID_DIR_SERV) {
1500                         /*
1501                          * qedf_rport structure doesn't exist for
1502                          * directory server.
1503                          * We should not come here, as lport will
1504                          * take care of fabric login
1505                          */
1506                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1507                             "exist for dir server port_id=%x\n",
1508                             rdata->ids.port_id);
1509                         break;
1510                 }
1511
1512                 if (rdata->spp_type != FC_TYPE_FCP) {
1513                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1514                             "Not offloading since spp type isn't FCP\n");
1515                         break;
1516                 }
1517                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1518                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1519                             "Not FCP target so not offloading\n");
1520                         break;
1521                 }
1522
1523                 /* Initial reference held on entry, so this can't fail */
1524                 kref_get(&rdata->kref);
1525                 fcport->rdata = rdata;
1526                 fcport->rport = rport;
1527
1528                 rval = qedf_alloc_sq(qedf, fcport);
1529                 if (rval) {
1530                         qedf_cleanup_fcport(qedf, fcport);
1531                         break;
1532                 }
1533
1534                 /* Set device type */
1535                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1536                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1537                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1538                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1539                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1540                             "portid=%06x is a TAPE device.\n",
1541                             rdata->ids.port_id);
1542                 } else {
1543                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1544                 }
1545
1546                 rval = qedf_offload_connection(qedf, fcport);
1547                 if (rval) {
1548                         qedf_cleanup_fcport(qedf, fcport);
1549                         break;
1550                 }
1551
1552                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1553                 spin_lock_irqsave(&qedf->hba_lock, flags);
1554                 list_add_rcu(&fcport->peers, &qedf->fcports);
1555                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1556
1557                 /*
1558                  * Set the session ready bit to let everyone know that this
1559                  * connection is ready for I/O
1560                  */
1561                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1562                 atomic_inc(&qedf->num_offloads);
1563
1564                 break;
1565         case RPORT_EV_LOGO:
1566         case RPORT_EV_FAILED:
1567         case RPORT_EV_STOP:
1568                 port_id = rdata->ids.port_id;
1569                 if (port_id == FC_FID_DIR_SERV)
1570                         break;
1571
1572                 if (rdata->spp_type != FC_TYPE_FCP) {
1573                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1574                             "No action since spp type isn't FCP\n");
1575                         break;
1576                 }
1577                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1578                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1579                             "Not FCP target so no action\n");
1580                         break;
1581                 }
1582
1583                 if (!rport) {
1584                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1585                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1586                         break;
1587                 }
1588                 rp = rport->dd_data;
1589                 /*
1590                  * Perform session upload. Note that rdata->peers is already
1591                  * removed from disc->rports list before we get this event.
1592                  */
1593                 fcport = (struct qedf_rport *)&rp[1];
1594
1595                 spin_lock_irqsave(&fcport->rport_lock, flags);
1596                 /* Only free this fcport if it is offloaded already */
1597                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1598                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1599                     &fcport->flags)) {
1600                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1601                                 &fcport->flags);
1602                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1603                         qedf_cleanup_fcport(qedf, fcport);
1604                         /*
1605                          * Remove fcport to list of qedf_ctx list of offloaded
1606                          * ports
1607                          */
1608                         spin_lock_irqsave(&qedf->hba_lock, flags);
1609                         list_del_rcu(&fcport->peers);
1610                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1611
1612                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1613                             &fcport->flags);
1614                         atomic_dec(&qedf->num_offloads);
1615                 } else {
1616                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1617                 }
1618                 break;
1619
1620         case RPORT_EV_NONE:
1621                 break;
1622         }
1623 }
1624
1625 static void qedf_abort_io(struct fc_lport *lport)
1626 {
1627         /* NO-OP but need to fill in the template */
1628 }
1629
1630 static void qedf_fcp_cleanup(struct fc_lport *lport)
1631 {
1632         /*
1633          * NO-OP but need to fill in template to prevent a NULL
1634          * function pointer dereference during link down. I/Os
1635          * will be flushed when port is uploaded.
1636          */
1637 }
1638
1639 static struct libfc_function_template qedf_lport_template = {
1640         .frame_send             = qedf_xmit,
1641         .fcp_abort_io           = qedf_abort_io,
1642         .fcp_cleanup            = qedf_fcp_cleanup,
1643         .rport_event_callback   = qedf_rport_event_handler,
1644         .elsct_send             = qedf_elsct_send,
1645 };
1646
1647 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1648 {
1649         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1650
1651         qedf->ctlr.send = qedf_fip_send;
1652         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1653         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1654 }
1655
1656 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1657 {
1658         struct fc_lport *lport = qedf->lport;
1659         u8 buf[8];
1660         int pos;
1661         uint32_t i;
1662
1663         /*
1664          * fdmi_enabled needs to be set for libfc
1665          * to execute FDMI registration
1666          */
1667         lport->fdmi_enabled = 1;
1668
1669         /*
1670          * Setup the necessary fc_host attributes to that will be used to fill
1671          * in the FDMI information.
1672          */
1673
1674         /* Get the PCI-e Device Serial Number Capability */
1675         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1676         if (pos) {
1677                 pos += 4;
1678                 for (i = 0; i < 8; i++)
1679                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1680
1681                 snprintf(fc_host_serial_number(lport->host),
1682                     FC_SERIAL_NUMBER_SIZE,
1683                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1684                     buf[7], buf[6], buf[5], buf[4],
1685                     buf[3], buf[2], buf[1], buf[0]);
1686         } else
1687                 snprintf(fc_host_serial_number(lport->host),
1688                     FC_SERIAL_NUMBER_SIZE, "Unknown");
1689
1690         snprintf(fc_host_manufacturer(lport->host),
1691             FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1692
1693         if (qedf->pdev->device == QL45xxx) {
1694                 snprintf(fc_host_model(lport->host),
1695                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1696
1697                 snprintf(fc_host_model_description(lport->host),
1698                         FC_SYMBOLIC_NAME_SIZE, "%s",
1699                         "Marvell FastLinQ QL45xxx FCoE Adapter");
1700         }
1701
1702         if (qedf->pdev->device == QL41xxx) {
1703                 snprintf(fc_host_model(lport->host),
1704                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1705
1706                 snprintf(fc_host_model_description(lport->host),
1707                         FC_SYMBOLIC_NAME_SIZE, "%s",
1708                         "Marvell FastLinQ QL41xxx FCoE Adapter");
1709         }
1710
1711         snprintf(fc_host_hardware_version(lport->host),
1712             FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1713
1714         snprintf(fc_host_driver_version(lport->host),
1715             FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1716
1717         snprintf(fc_host_firmware_version(lport->host),
1718             FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1719             FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1720             FW_ENGINEERING_VERSION);
1721
1722         snprintf(fc_host_vendor_identifier(lport->host),
1723                 FC_VENDOR_IDENTIFIER, "%s", "Marvell");
1724
1725 }
1726
1727 static int qedf_lport_setup(struct qedf_ctx *qedf)
1728 {
1729         struct fc_lport *lport = qedf->lport;
1730
1731         lport->link_up = 0;
1732         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1733         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1734         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1735             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1736         lport->boot_time = jiffies;
1737         lport->e_d_tov = 2 * 1000;
1738         lport->r_a_tov = 10 * 1000;
1739
1740         /* Set NPIV support */
1741         lport->does_npiv = 1;
1742         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1743
1744         fc_set_wwnn(lport, qedf->wwnn);
1745         fc_set_wwpn(lport, qedf->wwpn);
1746
1747         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1748                 QEDF_ERR(&qedf->dbg_ctx,
1749                          "fcoe_libfc_config failed.\n");
1750                 return -ENOMEM;
1751         }
1752
1753         /* Allocate the exchange manager */
1754         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1755                           0xfffe, NULL);
1756
1757         if (fc_lport_init_stats(lport))
1758                 return -ENOMEM;
1759
1760         /* Finish lport config */
1761         fc_lport_config(lport);
1762
1763         /* Set max frame size */
1764         fc_set_mfs(lport, QEDF_MFS);
1765         fc_host_maxframe_size(lport->host) = lport->mfs;
1766
1767         /* Set default dev_loss_tmo based on module parameter */
1768         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1769
1770         /* Set symbolic node name */
1771         if (qedf->pdev->device == QL45xxx)
1772                 snprintf(fc_host_symbolic_name(lport->host), 256,
1773                         "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1774
1775         if (qedf->pdev->device == QL41xxx)
1776                 snprintf(fc_host_symbolic_name(lport->host), 256,
1777                         "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1778
1779         qedf_setup_fdmi(qedf);
1780
1781         return 0;
1782 }
1783
1784 /*
1785  * NPIV functions
1786  */
1787
1788 static int qedf_vport_libfc_config(struct fc_vport *vport,
1789         struct fc_lport *lport)
1790 {
1791         lport->link_up = 0;
1792         lport->qfull = 0;
1793         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1794         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1795         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1796             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1797         lport->boot_time = jiffies;
1798         lport->e_d_tov = 2 * 1000;
1799         lport->r_a_tov = 10 * 1000;
1800         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1801
1802         /* Allocate stats for vport */
1803         if (fc_lport_init_stats(lport))
1804                 return -ENOMEM;
1805
1806         /* Finish lport config */
1807         fc_lport_config(lport);
1808
1809         /* offload related configuration */
1810         lport->crc_offload = 0;
1811         lport->seq_offload = 0;
1812         lport->lro_enabled = 0;
1813         lport->lro_xid = 0;
1814         lport->lso_max = 0;
1815
1816         return 0;
1817 }
1818
1819 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1820 {
1821         struct Scsi_Host *shost = vport_to_shost(vport);
1822         struct fc_lport *n_port = shost_priv(shost);
1823         struct fc_lport *vn_port;
1824         struct qedf_ctx *base_qedf = lport_priv(n_port);
1825         struct qedf_ctx *vport_qedf;
1826
1827         char buf[32];
1828         int rc = 0;
1829
1830         rc = fcoe_validate_vport_create(vport);
1831         if (rc) {
1832                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1833                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1834                            "WWPN (0x%s) already exists.\n", buf);
1835                 return rc;
1836         }
1837
1838         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1839                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1840                            "because link is not up.\n");
1841                 return -EIO;
1842         }
1843
1844         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1845         if (!vn_port) {
1846                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1847                            "for vport.\n");
1848                 return -ENOMEM;
1849         }
1850
1851         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1852         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1853             buf);
1854
1855         /* Copy some fields from base_qedf */
1856         vport_qedf = lport_priv(vn_port);
1857         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1858
1859         /* Set qedf data specific to this vport */
1860         vport_qedf->lport = vn_port;
1861         /* Use same hba_lock as base_qedf */
1862         vport_qedf->hba_lock = base_qedf->hba_lock;
1863         vport_qedf->pdev = base_qedf->pdev;
1864         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1865         init_completion(&vport_qedf->flogi_compl);
1866         INIT_LIST_HEAD(&vport_qedf->fcports);
1867         INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1868
1869         rc = qedf_vport_libfc_config(vport, vn_port);
1870         if (rc) {
1871                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1872                     "for lport stats.\n");
1873                 goto err;
1874         }
1875
1876         fc_set_wwnn(vn_port, vport->node_name);
1877         fc_set_wwpn(vn_port, vport->port_name);
1878         vport_qedf->wwnn = vn_port->wwnn;
1879         vport_qedf->wwpn = vn_port->wwpn;
1880
1881         vn_port->host->transportt = qedf_fc_vport_transport_template;
1882         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1883         vn_port->host->max_lun = qedf_max_lun;
1884         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1885         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1886         vn_port->host->max_id = QEDF_MAX_SESSIONS;
1887
1888         rc = scsi_add_host(vn_port->host, &vport->dev);
1889         if (rc) {
1890                 QEDF_WARN(&base_qedf->dbg_ctx,
1891                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1892                 goto err;
1893         }
1894
1895         /* Set default dev_loss_tmo based on module parameter */
1896         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1897
1898         /* Init libfc stuffs */
1899         memcpy(&vn_port->tt, &qedf_lport_template,
1900                 sizeof(qedf_lport_template));
1901         fc_exch_init(vn_port);
1902         fc_elsct_init(vn_port);
1903         fc_lport_init(vn_port);
1904         fc_disc_init(vn_port);
1905         fc_disc_config(vn_port, vn_port);
1906
1907
1908         /* Allocate the exchange manager */
1909         shost = vport_to_shost(vport);
1910         n_port = shost_priv(shost);
1911         fc_exch_mgr_list_clone(n_port, vn_port);
1912
1913         /* Set max frame size */
1914         fc_set_mfs(vn_port, QEDF_MFS);
1915
1916         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1917
1918         if (disabled) {
1919                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1920         } else {
1921                 vn_port->boot_time = jiffies;
1922                 fc_fabric_login(vn_port);
1923                 fc_vport_setlink(vn_port);
1924         }
1925
1926         /* Set symbolic node name */
1927         if (base_qedf->pdev->device == QL45xxx)
1928                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1929                          "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1930
1931         if (base_qedf->pdev->device == QL41xxx)
1932                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1933                          "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1934
1935         /* Set supported speed */
1936         fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
1937
1938         /* Set speed */
1939         vn_port->link_speed = n_port->link_speed;
1940
1941         /* Set port type */
1942         fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
1943
1944         /* Set maxframe size */
1945         fc_host_maxframe_size(vn_port->host) = n_port->mfs;
1946
1947         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1948                    vn_port);
1949
1950         /* Set up debug context for vport */
1951         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1952         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1953
1954         return 0;
1955
1956 err:
1957         scsi_host_put(vn_port->host);
1958         return rc;
1959 }
1960
1961 static int qedf_vport_destroy(struct fc_vport *vport)
1962 {
1963         struct Scsi_Host *shost = vport_to_shost(vport);
1964         struct fc_lport *n_port = shost_priv(shost);
1965         struct fc_lport *vn_port = vport->dd_data;
1966         struct qedf_ctx *qedf = lport_priv(vn_port);
1967
1968         if (!qedf) {
1969                 QEDF_ERR(NULL, "qedf is NULL.\n");
1970                 goto out;
1971         }
1972
1973         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1974         set_bit(QEDF_UNLOADING, &qedf->flags);
1975
1976         mutex_lock(&n_port->lp_mutex);
1977         list_del(&vn_port->list);
1978         mutex_unlock(&n_port->lp_mutex);
1979
1980         fc_fabric_logoff(vn_port);
1981         fc_lport_destroy(vn_port);
1982
1983         /* Detach from scsi-ml */
1984         fc_remove_host(vn_port->host);
1985         scsi_remove_host(vn_port->host);
1986
1987         /*
1988          * Only try to release the exchange manager if the vn_port
1989          * configuration is complete.
1990          */
1991         if (vn_port->state == LPORT_ST_READY)
1992                 fc_exch_mgr_free(vn_port);
1993
1994         /* Free memory used by statistical counters */
1995         fc_lport_free_stats(vn_port);
1996
1997         /* Release Scsi_Host */
1998         scsi_host_put(vn_port->host);
1999
2000 out:
2001         return 0;
2002 }
2003
2004 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
2005 {
2006         struct fc_lport *lport = vport->dd_data;
2007
2008         if (disable) {
2009                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
2010                 fc_fabric_logoff(lport);
2011         } else {
2012                 lport->boot_time = jiffies;
2013                 fc_fabric_login(lport);
2014                 fc_vport_setlink(lport);
2015         }
2016         return 0;
2017 }
2018
2019 /*
2020  * During removal we need to wait for all the vports associated with a port
2021  * to be destroyed so we avoid a race condition where libfc is still trying
2022  * to reap vports while the driver remove function has already reaped the
2023  * driver contexts associated with the physical port.
2024  */
2025 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2026 {
2027         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2028
2029         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2030             "Entered.\n");
2031         while (fc_host->npiv_vports_inuse > 0) {
2032                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2033                     "Waiting for all vports to be reaped.\n");
2034                 msleep(1000);
2035         }
2036 }
2037
2038 /**
2039  * qedf_fcoe_reset - Resets the fcoe
2040  *
2041  * @shost: shost the reset is from
2042  *
2043  * Returns: always 0
2044  */
2045 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2046 {
2047         struct fc_lport *lport = shost_priv(shost);
2048
2049         qedf_ctx_soft_reset(lport);
2050         return 0;
2051 }
2052
2053 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2054 {
2055         struct fc_lport *lport = shost_priv(shost);
2056
2057         fc_host_port_id(shost) = lport->port_id;
2058 }
2059
2060 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2061         *shost)
2062 {
2063         struct fc_host_statistics *qedf_stats;
2064         struct fc_lport *lport = shost_priv(shost);
2065         struct qedf_ctx *qedf = lport_priv(lport);
2066         struct qed_fcoe_stats *fw_fcoe_stats;
2067
2068         qedf_stats = fc_get_host_stats(shost);
2069
2070         /* We don't collect offload stats for specific NPIV ports */
2071         if (lport->vport)
2072                 goto out;
2073
2074         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2075         if (!fw_fcoe_stats) {
2076                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2077                     "fw_fcoe_stats.\n");
2078                 goto out;
2079         }
2080
2081         mutex_lock(&qedf->stats_mutex);
2082
2083         /* Query firmware for offload stats */
2084         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2085
2086         /*
2087          * The expectation is that we add our offload stats to the stats
2088          * being maintained by libfc each time the fc_get_host_status callback
2089          * is invoked. The additions are not carried over for each call to
2090          * the fc_get_host_stats callback.
2091          */
2092         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2093             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2094             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2095         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2096             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2097             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2098         qedf_stats->fcp_input_megabytes +=
2099             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2100         qedf_stats->fcp_output_megabytes +=
2101             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2102         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2103         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2104         qedf_stats->invalid_crc_count +=
2105             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2106         qedf_stats->dumped_frames =
2107             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2108         qedf_stats->error_frames +=
2109             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2110         qedf_stats->fcp_input_requests += qedf->input_requests;
2111         qedf_stats->fcp_output_requests += qedf->output_requests;
2112         qedf_stats->fcp_control_requests += qedf->control_requests;
2113         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2114         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2115
2116         mutex_unlock(&qedf->stats_mutex);
2117         kfree(fw_fcoe_stats);
2118 out:
2119         return qedf_stats;
2120 }
2121
2122 static struct fc_function_template qedf_fc_transport_fn = {
2123         .show_host_node_name = 1,
2124         .show_host_port_name = 1,
2125         .show_host_supported_classes = 1,
2126         .show_host_supported_fc4s = 1,
2127         .show_host_active_fc4s = 1,
2128         .show_host_maxframe_size = 1,
2129
2130         .get_host_port_id = qedf_get_host_port_id,
2131         .show_host_port_id = 1,
2132         .show_host_supported_speeds = 1,
2133         .get_host_speed = fc_get_host_speed,
2134         .show_host_speed = 1,
2135         .show_host_port_type = 1,
2136         .get_host_port_state = fc_get_host_port_state,
2137         .show_host_port_state = 1,
2138         .show_host_symbolic_name = 1,
2139
2140         /*
2141          * Tell FC transport to allocate enough space to store the backpointer
2142          * for the associate qedf_rport struct.
2143          */
2144         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2145                                 sizeof(struct qedf_rport)),
2146         .show_rport_maxframe_size = 1,
2147         .show_rport_supported_classes = 1,
2148         .show_host_fabric_name = 1,
2149         .show_starget_node_name = 1,
2150         .show_starget_port_name = 1,
2151         .show_starget_port_id = 1,
2152         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2153         .show_rport_dev_loss_tmo = 1,
2154         .get_fc_host_stats = qedf_fc_get_host_stats,
2155         .issue_fc_host_lip = qedf_fcoe_reset,
2156         .vport_create = qedf_vport_create,
2157         .vport_delete = qedf_vport_destroy,
2158         .vport_disable = qedf_vport_disable,
2159         .bsg_request = fc_lport_bsg_request,
2160 };
2161
2162 static struct fc_function_template qedf_fc_vport_transport_fn = {
2163         .show_host_node_name = 1,
2164         .show_host_port_name = 1,
2165         .show_host_supported_classes = 1,
2166         .show_host_supported_fc4s = 1,
2167         .show_host_active_fc4s = 1,
2168         .show_host_maxframe_size = 1,
2169         .show_host_port_id = 1,
2170         .show_host_supported_speeds = 1,
2171         .get_host_speed = fc_get_host_speed,
2172         .show_host_speed = 1,
2173         .show_host_port_type = 1,
2174         .get_host_port_state = fc_get_host_port_state,
2175         .show_host_port_state = 1,
2176         .show_host_symbolic_name = 1,
2177         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2178                                 sizeof(struct qedf_rport)),
2179         .show_rport_maxframe_size = 1,
2180         .show_rport_supported_classes = 1,
2181         .show_host_fabric_name = 1,
2182         .show_starget_node_name = 1,
2183         .show_starget_port_name = 1,
2184         .show_starget_port_id = 1,
2185         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2186         .show_rport_dev_loss_tmo = 1,
2187         .get_fc_host_stats = fc_get_host_stats,
2188         .issue_fc_host_lip = qedf_fcoe_reset,
2189         .bsg_request = fc_lport_bsg_request,
2190 };
2191
2192 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2193 {
2194         struct qedf_ctx *qedf = fp->qedf;
2195         struct global_queue *que;
2196         struct qed_sb_info *sb_info = fp->sb_info;
2197         struct status_block *sb = sb_info->sb_virt;
2198         u16 prod_idx;
2199
2200         /* Get the pointer to the global CQ this completion is on */
2201         que = qedf->global_queues[fp->sb_id];
2202
2203         /* Be sure all responses have been written to PI */
2204         rmb();
2205
2206         /* Get the current firmware producer index */
2207         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2208
2209         return (que->cq_prod_idx != prod_idx);
2210 }
2211
2212 /*
2213  * Interrupt handler code.
2214  */
2215
2216 /* Process completion queue and copy CQE contents for deferred processesing
2217  *
2218  * Return true if we should wake the I/O thread, false if not.
2219  */
2220 static bool qedf_process_completions(struct qedf_fastpath *fp)
2221 {
2222         struct qedf_ctx *qedf = fp->qedf;
2223         struct qed_sb_info *sb_info = fp->sb_info;
2224         struct status_block *sb = sb_info->sb_virt;
2225         struct global_queue *que;
2226         u16 prod_idx;
2227         struct fcoe_cqe *cqe;
2228         struct qedf_io_work *io_work;
2229         unsigned int cpu;
2230         struct qedf_ioreq *io_req = NULL;
2231         u16 xid;
2232         u16 new_cqes;
2233         u32 comp_type;
2234
2235         /* Get the current firmware producer index */
2236         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2237
2238         /* Get the pointer to the global CQ this completion is on */
2239         que = qedf->global_queues[fp->sb_id];
2240
2241         /* Calculate the amount of new elements since last processing */
2242         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2243             (prod_idx - que->cq_prod_idx) :
2244             0x10000 - que->cq_prod_idx + prod_idx;
2245
2246         /* Save producer index */
2247         que->cq_prod_idx = prod_idx;
2248
2249         while (new_cqes) {
2250                 fp->completions++;
2251                 cqe = &que->cq[que->cq_cons_idx];
2252
2253                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2254                     FCOE_CQE_CQE_TYPE_MASK;
2255
2256                 /*
2257                  * Process unsolicited CQEs directly in the interrupt handler
2258                  * sine we need the fastpath ID
2259                  */
2260                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2261                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2262                            "Unsolicated CQE.\n");
2263                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2264                         /*
2265                          * Don't add a work list item.  Increment consumer
2266                          * consumer index and move on.
2267                          */
2268                         goto inc_idx;
2269                 }
2270
2271                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2272                 io_req = &qedf->cmd_mgr->cmds[xid];
2273
2274                 /*
2275                  * Figure out which percpu thread we should queue this I/O
2276                  * on.
2277                  */
2278                 if (!io_req)
2279                         /* If there is not io_req assocated with this CQE
2280                          * just queue it on CPU 0
2281                          */
2282                         cpu = 0;
2283                 else {
2284                         cpu = io_req->cpu;
2285                         io_req->int_cpu = smp_processor_id();
2286                 }
2287
2288                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2289                 if (!io_work) {
2290                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2291                                    "work for I/O completion.\n");
2292                         continue;
2293                 }
2294                 memset(io_work, 0, sizeof(struct qedf_io_work));
2295
2296                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2297
2298                 /* Copy contents of CQE for deferred processing */
2299                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2300
2301                 io_work->qedf = fp->qedf;
2302                 io_work->fp = NULL; /* Only used for unsolicited frames */
2303
2304                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2305
2306 inc_idx:
2307                 que->cq_cons_idx++;
2308                 if (que->cq_cons_idx == fp->cq_num_entries)
2309                         que->cq_cons_idx = 0;
2310                 new_cqes--;
2311         }
2312
2313         return true;
2314 }
2315
2316
2317 /* MSI-X fastpath handler code */
2318 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2319 {
2320         struct qedf_fastpath *fp = dev_id;
2321
2322         if (!fp) {
2323                 QEDF_ERR(NULL, "fp is null.\n");
2324                 return IRQ_HANDLED;
2325         }
2326         if (!fp->sb_info) {
2327                 QEDF_ERR(NULL, "fp->sb_info in null.");
2328                 return IRQ_HANDLED;
2329         }
2330
2331         /*
2332          * Disable interrupts for this status block while we process new
2333          * completions
2334          */
2335         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2336
2337         while (1) {
2338                 qedf_process_completions(fp);
2339
2340                 if (qedf_fp_has_work(fp) == 0) {
2341                         /* Update the sb information */
2342                         qed_sb_update_sb_idx(fp->sb_info);
2343
2344                         /* Check for more work */
2345                         rmb();
2346
2347                         if (qedf_fp_has_work(fp) == 0) {
2348                                 /* Re-enable interrupts */
2349                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2350                                 return IRQ_HANDLED;
2351                         }
2352                 }
2353         }
2354
2355         /* Do we ever want to break out of above loop? */
2356         return IRQ_HANDLED;
2357 }
2358
2359 /* simd handler for MSI/INTa */
2360 static void qedf_simd_int_handler(void *cookie)
2361 {
2362         /* Cookie is qedf_ctx struct */
2363         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2364
2365         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2366 }
2367
2368 #define QEDF_SIMD_HANDLER_NUM           0
2369 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2370 {
2371         int i;
2372         u16 vector_idx = 0;
2373         u32 vector;
2374
2375         if (qedf->int_info.msix_cnt) {
2376                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2377                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2378                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2379                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2380                                   "Freeing IRQ #%d vector_idx=%d.\n",
2381                                   i, vector_idx);
2382                         vector = qedf->int_info.msix[vector_idx].vector;
2383                         synchronize_irq(vector);
2384                         irq_set_affinity_hint(vector, NULL);
2385                         irq_set_affinity_notifier(vector, NULL);
2386                         free_irq(vector, &qedf->fp_array[i]);
2387                 }
2388         } else
2389                 qed_ops->common->simd_handler_clean(qedf->cdev,
2390                     QEDF_SIMD_HANDLER_NUM);
2391
2392         qedf->int_info.used_cnt = 0;
2393         qed_ops->common->set_fp_int(qedf->cdev, 0);
2394 }
2395
2396 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2397 {
2398         int i, rc, cpu;
2399         u16 vector_idx = 0;
2400         u32 vector;
2401
2402         cpu = cpumask_first(cpu_online_mask);
2403         for (i = 0; i < qedf->num_queues; i++) {
2404                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2405                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2406                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2407                           "Requesting IRQ #%d vector_idx=%d.\n",
2408                           i, vector_idx);
2409                 vector = qedf->int_info.msix[vector_idx].vector;
2410                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2411                                  &qedf->fp_array[i]);
2412
2413                 if (rc) {
2414                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2415                         qedf_sync_free_irqs(qedf);
2416                         return rc;
2417                 }
2418
2419                 qedf->int_info.used_cnt++;
2420                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2421                 cpu = cpumask_next(cpu, cpu_online_mask);
2422         }
2423
2424         return 0;
2425 }
2426
2427 static int qedf_setup_int(struct qedf_ctx *qedf)
2428 {
2429         int rc = 0;
2430
2431         /*
2432          * Learn interrupt configuration
2433          */
2434         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2435         if (rc <= 0)
2436                 return 0;
2437
2438         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2439         if (rc)
2440                 return 0;
2441
2442         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2443                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2444                    num_online_cpus());
2445
2446         if (qedf->int_info.msix_cnt)
2447                 return qedf_request_msix_irq(qedf);
2448
2449         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2450             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2451         qedf->int_info.used_cnt = 1;
2452
2453         QEDF_ERR(&qedf->dbg_ctx,
2454                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2455         return -EINVAL;
2456 }
2457
2458 /* Main function for libfc frame reception */
2459 static void qedf_recv_frame(struct qedf_ctx *qedf,
2460         struct sk_buff *skb)
2461 {
2462         u32 fr_len;
2463         struct fc_lport *lport;
2464         struct fc_frame_header *fh;
2465         struct fcoe_crc_eof crc_eof;
2466         struct fc_frame *fp;
2467         u8 *mac = NULL;
2468         u8 *dest_mac = NULL;
2469         struct fcoe_hdr *hp;
2470         struct qedf_rport *fcport;
2471         struct fc_lport *vn_port;
2472         u32 f_ctl;
2473
2474         lport = qedf->lport;
2475         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2476                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2477                 kfree_skb(skb);
2478                 return;
2479         }
2480
2481         if (skb_is_nonlinear(skb))
2482                 skb_linearize(skb);
2483         mac = eth_hdr(skb)->h_source;
2484         dest_mac = eth_hdr(skb)->h_dest;
2485
2486         /* Pull the header */
2487         hp = (struct fcoe_hdr *)skb->data;
2488         fh = (struct fc_frame_header *) skb_transport_header(skb);
2489         skb_pull(skb, sizeof(struct fcoe_hdr));
2490         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2491
2492         fp = (struct fc_frame *)skb;
2493         fc_frame_init(fp);
2494         fr_dev(fp) = lport;
2495         fr_sof(fp) = hp->fcoe_sof;
2496         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2497                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2498                 kfree_skb(skb);
2499                 return;
2500         }
2501         fr_eof(fp) = crc_eof.fcoe_eof;
2502         fr_crc(fp) = crc_eof.fcoe_crc32;
2503         if (pskb_trim(skb, fr_len)) {
2504                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2505                 kfree_skb(skb);
2506                 return;
2507         }
2508
2509         fh = fc_frame_header_get(fp);
2510
2511         /*
2512          * Invalid frame filters.
2513          */
2514
2515         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2516             fh->fh_type == FC_TYPE_FCP) {
2517                 /* Drop FCP data. We dont this in L2 path */
2518                 kfree_skb(skb);
2519                 return;
2520         }
2521         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2522             fh->fh_type == FC_TYPE_ELS) {
2523                 switch (fc_frame_payload_op(fp)) {
2524                 case ELS_LOGO:
2525                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2526                                 /* drop non-FIP LOGO */
2527                                 kfree_skb(skb);
2528                                 return;
2529                         }
2530                         break;
2531                 }
2532         }
2533
2534         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2535                 /* Drop incoming ABTS */
2536                 kfree_skb(skb);
2537                 return;
2538         }
2539
2540         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2541                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2542                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2543                 kfree_skb(skb);
2544                 return;
2545         }
2546
2547         if (qedf->ctlr.state) {
2548                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2549                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2550                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2551                             mac, qedf->ctlr.dest_addr);
2552                         kfree_skb(skb);
2553                         return;
2554                 }
2555         }
2556
2557         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2558
2559         /*
2560          * If the destination ID from the frame header does not match what we
2561          * have on record for lport and the search for a NPIV port came up
2562          * empty then this is not addressed to our port so simply drop it.
2563          */
2564         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2565                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2566                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2567                           lport->port_id, ntoh24(fh->fh_d_id));
2568                 kfree_skb(skb);
2569                 return;
2570         }
2571
2572         f_ctl = ntoh24(fh->fh_f_ctl);
2573         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2574             (f_ctl & FC_FC_EX_CTX)) {
2575                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2576                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2577                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2578                 kfree_skb(skb);
2579                 return;
2580         }
2581
2582         /*
2583          * If a connection is uploading, drop incoming FCoE frames as there
2584          * is a small window where we could try to return a frame while libfc
2585          * is trying to clean things up.
2586          */
2587
2588         /* Get fcport associated with d_id if it exists */
2589         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2590
2591         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2592             &fcport->flags)) {
2593                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2594                     "Connection uploading, dropping fp=%p.\n", fp);
2595                 kfree_skb(skb);
2596                 return;
2597         }
2598
2599         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2600             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2601             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2602             fh->fh_type);
2603         if (qedf_dump_frames)
2604                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2605                     1, skb->data, skb->len, false);
2606         fc_exch_recv(lport, fp);
2607 }
2608
2609 static void qedf_ll2_process_skb(struct work_struct *work)
2610 {
2611         struct qedf_skb_work *skb_work =
2612             container_of(work, struct qedf_skb_work, work);
2613         struct qedf_ctx *qedf = skb_work->qedf;
2614         struct sk_buff *skb = skb_work->skb;
2615         struct ethhdr *eh;
2616
2617         if (!qedf) {
2618                 QEDF_ERR(NULL, "qedf is NULL\n");
2619                 goto err_out;
2620         }
2621
2622         eh = (struct ethhdr *)skb->data;
2623
2624         /* Undo VLAN encapsulation */
2625         if (eh->h_proto == htons(ETH_P_8021Q)) {
2626                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2627                 eh = skb_pull(skb, VLAN_HLEN);
2628                 skb_reset_mac_header(skb);
2629         }
2630
2631         /*
2632          * Process either a FIP frame or FCoE frame based on the
2633          * protocol value.  If it's not either just drop the
2634          * frame.
2635          */
2636         if (eh->h_proto == htons(ETH_P_FIP)) {
2637                 qedf_fip_recv(qedf, skb);
2638                 goto out;
2639         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2640                 __skb_pull(skb, ETH_HLEN);
2641                 qedf_recv_frame(qedf, skb);
2642                 goto out;
2643         } else
2644                 goto err_out;
2645
2646 err_out:
2647         kfree_skb(skb);
2648 out:
2649         kfree(skb_work);
2650         return;
2651 }
2652
2653 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2654         u32 arg1, u32 arg2)
2655 {
2656         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2657         struct qedf_skb_work *skb_work;
2658
2659         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2660                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2661                           "Dropping frame as link state is down.\n");
2662                 kfree_skb(skb);
2663                 return 0;
2664         }
2665
2666         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2667         if (!skb_work) {
2668                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2669                            "dropping frame.\n");
2670                 kfree_skb(skb);
2671                 return 0;
2672         }
2673
2674         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2675         skb_work->skb = skb;
2676         skb_work->qedf = qedf;
2677         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2678
2679         return 0;
2680 }
2681
2682 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2683         .rx_cb = qedf_ll2_rx,
2684         .tx_cb = NULL,
2685 };
2686
2687 /* Main thread to process I/O completions */
2688 void qedf_fp_io_handler(struct work_struct *work)
2689 {
2690         struct qedf_io_work *io_work =
2691             container_of(work, struct qedf_io_work, work);
2692         u32 comp_type;
2693
2694         /*
2695          * Deferred part of unsolicited CQE sends
2696          * frame to libfc.
2697          */
2698         comp_type = (io_work->cqe.cqe_data >>
2699             FCOE_CQE_CQE_TYPE_SHIFT) &
2700             FCOE_CQE_CQE_TYPE_MASK;
2701         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2702             io_work->fp)
2703                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2704         else
2705                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2706
2707         kfree(io_work);
2708 }
2709
2710 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2711         struct qed_sb_info *sb_info, u16 sb_id)
2712 {
2713         struct status_block *sb_virt;
2714         dma_addr_t sb_phys;
2715         int ret;
2716
2717         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2718             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2719
2720         if (!sb_virt) {
2721                 QEDF_ERR(&qedf->dbg_ctx,
2722                          "Status block allocation failed for id = %d.\n",
2723                          sb_id);
2724                 return -ENOMEM;
2725         }
2726
2727         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2728             sb_id, QED_SB_TYPE_STORAGE);
2729
2730         if (ret) {
2731                 QEDF_ERR(&qedf->dbg_ctx,
2732                          "Status block initialization failed (0x%x) for id = %d.\n",
2733                          ret, sb_id);
2734                 return ret;
2735         }
2736
2737         return 0;
2738 }
2739
2740 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2741 {
2742         if (sb_info->sb_virt)
2743                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2744                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2745 }
2746
2747 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2748 {
2749         int id;
2750         struct qedf_fastpath *fp = NULL;
2751
2752         for (id = 0; id < qedf->num_queues; id++) {
2753                 fp = &(qedf->fp_array[id]);
2754                 if (fp->sb_id == QEDF_SB_ID_NULL)
2755                         break;
2756                 qedf_free_sb(qedf, fp->sb_info);
2757                 kfree(fp->sb_info);
2758         }
2759         kfree(qedf->fp_array);
2760 }
2761
2762 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2763 {
2764         int id;
2765         struct qedf_fastpath *fp;
2766         int ret;
2767
2768         qedf->fp_array =
2769             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2770                 GFP_KERNEL);
2771
2772         if (!qedf->fp_array) {
2773                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2774                           "failed.\n");
2775                 return -ENOMEM;
2776         }
2777
2778         for (id = 0; id < qedf->num_queues; id++) {
2779                 fp = &(qedf->fp_array[id]);
2780                 fp->sb_id = QEDF_SB_ID_NULL;
2781                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2782                 if (!fp->sb_info) {
2783                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2784                                   "allocation failed.\n");
2785                         goto err;
2786                 }
2787                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2788                 if (ret) {
2789                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2790                                   "initialization failed.\n");
2791                         goto err;
2792                 }
2793                 fp->sb_id = id;
2794                 fp->qedf = qedf;
2795                 fp->cq_num_entries =
2796                     qedf->global_queues[id]->cq_mem_size /
2797                     sizeof(struct fcoe_cqe);
2798         }
2799 err:
2800         return 0;
2801 }
2802
2803 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2804 {
2805         u16 xid;
2806         struct qedf_ioreq *io_req;
2807         struct qedf_rport *fcport;
2808         u32 comp_type;
2809         u8 io_comp_type;
2810         unsigned long flags;
2811
2812         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2813             FCOE_CQE_CQE_TYPE_MASK;
2814
2815         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2816         io_req = &qedf->cmd_mgr->cmds[xid];
2817
2818         /* Completion not for a valid I/O anymore so just return */
2819         if (!io_req) {
2820                 QEDF_ERR(&qedf->dbg_ctx,
2821                          "io_req is NULL for xid=0x%x.\n", xid);
2822                 return;
2823         }
2824
2825         fcport = io_req->fcport;
2826
2827         if (fcport == NULL) {
2828                 QEDF_ERR(&qedf->dbg_ctx,
2829                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2830                          xid, io_req);
2831                 return;
2832         }
2833
2834         /*
2835          * Check that fcport is offloaded.  If it isn't then the spinlock
2836          * isn't valid and shouldn't be taken. We should just return.
2837          */
2838         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2839                 QEDF_ERR(&qedf->dbg_ctx,
2840                          "Session not offloaded yet, fcport = %p.\n", fcport);
2841                 return;
2842         }
2843
2844         spin_lock_irqsave(&fcport->rport_lock, flags);
2845         io_comp_type = io_req->cmd_type;
2846         spin_unlock_irqrestore(&fcport->rport_lock, flags);
2847
2848         switch (comp_type) {
2849         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2850                 atomic_inc(&fcport->free_sqes);
2851                 switch (io_comp_type) {
2852                 case QEDF_SCSI_CMD:
2853                         qedf_scsi_completion(qedf, cqe, io_req);
2854                         break;
2855                 case QEDF_ELS:
2856                         qedf_process_els_compl(qedf, cqe, io_req);
2857                         break;
2858                 case QEDF_TASK_MGMT_CMD:
2859                         qedf_process_tmf_compl(qedf, cqe, io_req);
2860                         break;
2861                 case QEDF_SEQ_CLEANUP:
2862                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2863                         break;
2864                 }
2865                 break;
2866         case FCOE_ERROR_DETECTION_CQE_TYPE:
2867                 atomic_inc(&fcport->free_sqes);
2868                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2869                     "Error detect CQE.\n");
2870                 qedf_process_error_detect(qedf, cqe, io_req);
2871                 break;
2872         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2873                 atomic_inc(&fcport->free_sqes);
2874                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2875                     "Cleanup CQE.\n");
2876                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2877                 break;
2878         case FCOE_ABTS_CQE_TYPE:
2879                 atomic_inc(&fcport->free_sqes);
2880                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2881                     "Abort CQE.\n");
2882                 qedf_process_abts_compl(qedf, cqe, io_req);
2883                 break;
2884         case FCOE_DUMMY_CQE_TYPE:
2885                 atomic_inc(&fcport->free_sqes);
2886                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2887                     "Dummy CQE.\n");
2888                 break;
2889         case FCOE_LOCAL_COMP_CQE_TYPE:
2890                 atomic_inc(&fcport->free_sqes);
2891                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2892                     "Local completion CQE.\n");
2893                 break;
2894         case FCOE_WARNING_CQE_TYPE:
2895                 atomic_inc(&fcport->free_sqes);
2896                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2897                     "Warning CQE.\n");
2898                 qedf_process_warning_compl(qedf, cqe, io_req);
2899                 break;
2900         case MAX_FCOE_CQE_TYPE:
2901                 atomic_inc(&fcport->free_sqes);
2902                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2903                     "Max FCoE CQE.\n");
2904                 break;
2905         default:
2906                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2907                     "Default CQE.\n");
2908                 break;
2909         }
2910 }
2911
2912 static void qedf_free_bdq(struct qedf_ctx *qedf)
2913 {
2914         int i;
2915
2916         if (qedf->bdq_pbl_list)
2917                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2918                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2919
2920         if (qedf->bdq_pbl)
2921                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2922                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2923
2924         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2925                 if (qedf->bdq[i].buf_addr) {
2926                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2927                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2928                 }
2929         }
2930 }
2931
2932 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2933 {
2934         int i;
2935         struct global_queue **gl = qedf->global_queues;
2936
2937         for (i = 0; i < qedf->num_queues; i++) {
2938                 if (!gl[i])
2939                         continue;
2940
2941                 if (gl[i]->cq)
2942                         dma_free_coherent(&qedf->pdev->dev,
2943                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2944                 if (gl[i]->cq_pbl)
2945                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2946                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2947
2948                 kfree(gl[i]);
2949         }
2950
2951         qedf_free_bdq(qedf);
2952 }
2953
2954 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2955 {
2956         int i;
2957         struct scsi_bd *pbl;
2958         u64 *list;
2959
2960         /* Alloc dma memory for BDQ buffers */
2961         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2962                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2963                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2964                 if (!qedf->bdq[i].buf_addr) {
2965                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2966                             "buffer %d.\n", i);
2967                         return -ENOMEM;
2968                 }
2969         }
2970
2971         /* Alloc dma memory for BDQ page buffer list */
2972         qedf->bdq_pbl_mem_size =
2973             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2974         qedf->bdq_pbl_mem_size =
2975             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2976
2977         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2978             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2979         if (!qedf->bdq_pbl) {
2980                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2981                 return -ENOMEM;
2982         }
2983
2984         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2985                   "BDQ PBL addr=0x%p dma=%pad\n",
2986                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2987
2988         /*
2989          * Populate BDQ PBL with physical and virtual address of individual
2990          * BDQ buffers
2991          */
2992         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2993         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2994                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2995                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2996                 pbl->opaque.fcoe_opaque.hi = 0;
2997                 /* Opaque lo data is an index into the BDQ array */
2998                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2999                 pbl++;
3000         }
3001
3002         /* Allocate list of PBL pages */
3003         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
3004                                                 QEDF_PAGE_SIZE,
3005                                                 &qedf->bdq_pbl_list_dma,
3006                                                 GFP_KERNEL);
3007         if (!qedf->bdq_pbl_list) {
3008                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
3009                 return -ENOMEM;
3010         }
3011
3012         /*
3013          * Now populate PBL list with pages that contain pointers to the
3014          * individual buffers.
3015          */
3016         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
3017             QEDF_PAGE_SIZE;
3018         list = (u64 *)qedf->bdq_pbl_list;
3019         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
3020                 *list = qedf->bdq_pbl_dma;
3021                 list++;
3022         }
3023
3024         return 0;
3025 }
3026
3027 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3028 {
3029         u32 *list;
3030         int i;
3031         int status;
3032         u32 *pbl;
3033         dma_addr_t page;
3034         int num_pages;
3035
3036         /* Allocate and map CQs, RQs */
3037         /*
3038          * Number of global queues (CQ / RQ). This should
3039          * be <= number of available MSIX vectors for the PF
3040          */
3041         if (!qedf->num_queues) {
3042                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3043                 return -ENOMEM;
3044         }
3045
3046         /*
3047          * Make sure we allocated the PBL that will contain the physical
3048          * addresses of our queues
3049          */
3050         if (!qedf->p_cpuq) {
3051                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3052                 return -EINVAL;
3053         }
3054
3055         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3056             * qedf->num_queues), GFP_KERNEL);
3057         if (!qedf->global_queues) {
3058                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3059                           "queues array ptr memory\n");
3060                 return -ENOMEM;
3061         }
3062         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3063                    "qedf->global_queues=%p.\n", qedf->global_queues);
3064
3065         /* Allocate DMA coherent buffers for BDQ */
3066         status = qedf_alloc_bdq(qedf);
3067         if (status) {
3068                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3069                 goto mem_alloc_failure;
3070         }
3071
3072         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3073         for (i = 0; i < qedf->num_queues; i++) {
3074                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3075                     GFP_KERNEL);
3076                 if (!qedf->global_queues[i]) {
3077                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3078                                    "global queue %d.\n", i);
3079                         status = -ENOMEM;
3080                         goto mem_alloc_failure;
3081                 }
3082
3083                 qedf->global_queues[i]->cq_mem_size =
3084                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3085                 qedf->global_queues[i]->cq_mem_size =
3086                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3087
3088                 qedf->global_queues[i]->cq_pbl_size =
3089                     (qedf->global_queues[i]->cq_mem_size /
3090                     PAGE_SIZE) * sizeof(void *);
3091                 qedf->global_queues[i]->cq_pbl_size =
3092                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3093
3094                 qedf->global_queues[i]->cq =
3095                     dma_alloc_coherent(&qedf->pdev->dev,
3096                                        qedf->global_queues[i]->cq_mem_size,
3097                                        &qedf->global_queues[i]->cq_dma,
3098                                        GFP_KERNEL);
3099
3100                 if (!qedf->global_queues[i]->cq) {
3101                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3102                         status = -ENOMEM;
3103                         goto mem_alloc_failure;
3104                 }
3105
3106                 qedf->global_queues[i]->cq_pbl =
3107                     dma_alloc_coherent(&qedf->pdev->dev,
3108                                        qedf->global_queues[i]->cq_pbl_size,
3109                                        &qedf->global_queues[i]->cq_pbl_dma,
3110                                        GFP_KERNEL);
3111
3112                 if (!qedf->global_queues[i]->cq_pbl) {
3113                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3114                         status = -ENOMEM;
3115                         goto mem_alloc_failure;
3116                 }
3117
3118                 /* Create PBL */
3119                 num_pages = qedf->global_queues[i]->cq_mem_size /
3120                     QEDF_PAGE_SIZE;
3121                 page = qedf->global_queues[i]->cq_dma;
3122                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3123
3124                 while (num_pages--) {
3125                         *pbl = U64_LO(page);
3126                         pbl++;
3127                         *pbl = U64_HI(page);
3128                         pbl++;
3129                         page += QEDF_PAGE_SIZE;
3130                 }
3131                 /* Set the initial consumer index for cq */
3132                 qedf->global_queues[i]->cq_cons_idx = 0;
3133         }
3134
3135         list = (u32 *)qedf->p_cpuq;
3136
3137         /*
3138          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3139          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3140          * to the physical address which contains an array of pointers to
3141          * the physical addresses of the specific queue pages.
3142          */
3143         for (i = 0; i < qedf->num_queues; i++) {
3144                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3145                 list++;
3146                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3147                 list++;
3148                 *list = U64_LO(0);
3149                 list++;
3150                 *list = U64_HI(0);
3151                 list++;
3152         }
3153
3154         return 0;
3155
3156 mem_alloc_failure:
3157         qedf_free_global_queues(qedf);
3158         return status;
3159 }
3160
3161 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3162 {
3163         u8 sq_num_pbl_pages;
3164         u32 sq_mem_size;
3165         u32 cq_mem_size;
3166         u32 cq_num_entries;
3167         int rval;
3168
3169         /*
3170          * The number of completion queues/fastpath interrupts/status blocks
3171          * we allocation is the minimum off:
3172          *
3173          * Number of CPUs
3174          * Number allocated by qed for our PCI function
3175          */
3176         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3177
3178         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3179                    qedf->num_queues);
3180
3181         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3182             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3183             &qedf->hw_p_cpuq, GFP_KERNEL);
3184
3185         if (!qedf->p_cpuq) {
3186                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3187                 return 1;
3188         }
3189
3190         rval = qedf_alloc_global_queues(qedf);
3191         if (rval) {
3192                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3193                           "failed.\n");
3194                 return 1;
3195         }
3196
3197         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3198         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3199         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3200         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3201
3202         /* Calculate CQ num entries */
3203         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3204         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3205         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3206
3207         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3208
3209         /* Setup the value for fcoe PF */
3210         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3211         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3212         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3213             (u64)qedf->hw_p_cpuq;
3214         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3215
3216         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3217
3218         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3219         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3220
3221         /* log_page_size: 12 for 4KB pages */
3222         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3223
3224         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3225         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3226         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3227
3228         /* BDQ address and size */
3229         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3230             qedf->bdq_pbl_list_dma;
3231         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3232             qedf->bdq_pbl_list_num_entries;
3233         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3234
3235         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3236             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3237             qedf->bdq_pbl_list,
3238             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3239             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3240
3241         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3242             "cq_num_entries=%d.\n",
3243             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3244
3245         return 0;
3246 }
3247
3248 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3249 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3250 {
3251         size_t size = 0;
3252
3253         if (qedf->p_cpuq) {
3254                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3255                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3256                     qedf->hw_p_cpuq);
3257         }
3258
3259         qedf_free_global_queues(qedf);
3260
3261         kfree(qedf->global_queues);
3262 }
3263
3264 /*
3265  * PCI driver functions
3266  */
3267
3268 static const struct pci_device_id qedf_pci_tbl[] = {
3269         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3270         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3271         {0}
3272 };
3273 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3274
3275 static struct pci_driver qedf_pci_driver = {
3276         .name = QEDF_MODULE_NAME,
3277         .id_table = qedf_pci_tbl,
3278         .probe = qedf_probe,
3279         .remove = qedf_remove,
3280         .shutdown = qedf_shutdown,
3281         .suspend = qedf_suspend,
3282 };
3283
3284 static int __qedf_probe(struct pci_dev *pdev, int mode)
3285 {
3286         int rc = -EINVAL;
3287         struct fc_lport *lport;
3288         struct qedf_ctx *qedf = NULL;
3289         struct Scsi_Host *host;
3290         bool is_vf = false;
3291         struct qed_ll2_params params;
3292         char host_buf[20];
3293         struct qed_link_params link_params;
3294         int status;
3295         void *task_start, *task_end;
3296         struct qed_slowpath_params slowpath_params;
3297         struct qed_probe_params qed_params;
3298         u16 retry_cnt = 10;
3299
3300         /*
3301          * When doing error recovery we didn't reap the lport so don't try
3302          * to reallocate it.
3303          */
3304 retry_probe:
3305         if (mode == QEDF_MODE_RECOVERY)
3306                 msleep(2000);
3307
3308         if (mode != QEDF_MODE_RECOVERY) {
3309                 lport = libfc_host_alloc(&qedf_host_template,
3310                     sizeof(struct qedf_ctx));
3311
3312                 if (!lport) {
3313                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3314                         rc = -ENOMEM;
3315                         goto err0;
3316                 }
3317
3318                 fc_disc_init(lport);
3319
3320                 /* Initialize qedf_ctx */
3321                 qedf = lport_priv(lport);
3322                 set_bit(QEDF_PROBING, &qedf->flags);
3323                 qedf->lport = lport;
3324                 qedf->ctlr.lp = lport;
3325                 qedf->pdev = pdev;
3326                 qedf->dbg_ctx.pdev = pdev;
3327                 qedf->dbg_ctx.host_no = lport->host->host_no;
3328                 spin_lock_init(&qedf->hba_lock);
3329                 INIT_LIST_HEAD(&qedf->fcports);
3330                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3331                 atomic_set(&qedf->num_offloads, 0);
3332                 qedf->stop_io_on_error = false;
3333                 pci_set_drvdata(pdev, qedf);
3334                 init_completion(&qedf->fipvlan_compl);
3335                 mutex_init(&qedf->stats_mutex);
3336                 mutex_init(&qedf->flush_mutex);
3337                 qedf->flogi_pending = 0;
3338
3339                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3340                    "QLogic FastLinQ FCoE Module qedf %s, "
3341                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3342                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3343                    FW_ENGINEERING_VERSION);
3344         } else {
3345                 /* Init pointers during recovery */
3346                 qedf = pci_get_drvdata(pdev);
3347                 set_bit(QEDF_PROBING, &qedf->flags);
3348                 lport = qedf->lport;
3349         }
3350
3351         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3352
3353         host = lport->host;
3354
3355         /* Allocate mempool for qedf_io_work structs */
3356         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3357             qedf_io_work_cache);
3358         if (qedf->io_mempool == NULL) {
3359                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3360                 goto err1;
3361         }
3362         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3363             qedf->io_mempool);
3364
3365         sprintf(host_buf, "qedf_%u_link",
3366             qedf->lport->host->host_no);
3367         qedf->link_update_wq = create_workqueue(host_buf);
3368         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3369         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3370         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3371         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3372         qedf->fipvlan_retries = qedf_fipvlan_retries;
3373         /* Set a default prio in case DCBX doesn't converge */
3374         if (qedf_default_prio > -1) {
3375                 /*
3376                  * This is the case where we pass a modparam in so we want to
3377                  * honor it even if dcbx doesn't converge.
3378                  */
3379                 qedf->prio = qedf_default_prio;
3380         } else
3381                 qedf->prio = QEDF_DEFAULT_PRIO;
3382
3383         /*
3384          * Common probe. Takes care of basic hardware init and pci_*
3385          * functions.
3386          */
3387         memset(&qed_params, 0, sizeof(qed_params));
3388         qed_params.protocol = QED_PROTOCOL_FCOE;
3389         qed_params.dp_module = qedf_dp_module;
3390         qed_params.dp_level = qedf_dp_level;
3391         qed_params.is_vf = is_vf;
3392         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3393         if (!qedf->cdev) {
3394                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3395                         QEDF_ERR(&qedf->dbg_ctx,
3396                                 "Retry %d initialize hardware\n", retry_cnt);
3397                         retry_cnt--;
3398                         goto retry_probe;
3399                 }
3400                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3401                 rc = -ENODEV;
3402                 goto err1;
3403         }
3404
3405         /* Learn information crucial for qedf to progress */
3406         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3407         if (rc) {
3408                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3409                 goto err1;
3410         }
3411
3412         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3413                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3414                   qedf->dev_info.common.num_hwfns,
3415                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3416
3417         /* queue allocation code should come here
3418          * order should be
3419          *      slowpath_start
3420          *      status block allocation
3421          *      interrupt registration (to get min number of queues)
3422          *      set_fcoe_pf_param
3423          *      qed_sp_fcoe_func_start
3424          */
3425         rc = qedf_set_fcoe_pf_param(qedf);
3426         if (rc) {
3427                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3428                 goto err2;
3429         }
3430         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3431
3432         /* Learn information crucial for qedf to progress */
3433         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3434         if (rc) {
3435                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3436                 goto err2;
3437         }
3438
3439         if (mode != QEDF_MODE_RECOVERY) {
3440                 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3441                 if (IS_ERR(qedf->devlink)) {
3442                         QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3443                         rc = PTR_ERR(qedf->devlink);
3444                         qedf->devlink = NULL;
3445                         goto err2;
3446                 }
3447         }
3448
3449         /* Record BDQ producer doorbell addresses */
3450         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3451         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3452         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3453             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3454             qedf->bdq_secondary_prod);
3455
3456         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3457
3458         rc = qedf_prepare_sb(qedf);
3459         if (rc) {
3460
3461                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3462                 goto err2;
3463         }
3464
3465         /* Start the Slowpath-process */
3466         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3467         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3468         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3469         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3470         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3471         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3472         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3473         if (rc) {
3474                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3475                 goto err2;
3476         }
3477
3478         /*
3479          * update_pf_params needs to be called before and after slowpath
3480          * start
3481          */
3482         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3483
3484         /* Setup interrupts */
3485         rc = qedf_setup_int(qedf);
3486         if (rc) {
3487                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3488                 goto err3;
3489         }
3490
3491         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3492         if (rc) {
3493                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3494                 goto err4;
3495         }
3496         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3497         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3498         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3499                    "end=%p block_size=%u.\n", task_start, task_end,
3500                    qedf->tasks.size);
3501
3502         /*
3503          * We need to write the number of BDs in the BDQ we've preallocated so
3504          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3505          * packet arrives.
3506          */
3507         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3508         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3509             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3510             qedf->bdq_prod_idx);
3511         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3512         readw(qedf->bdq_primary_prod);
3513         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3514         readw(qedf->bdq_secondary_prod);
3515
3516         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3517
3518         /* Now that the dev_info struct has been filled in set the MAC
3519          * address
3520          */
3521         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3522         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3523                    qedf->mac);
3524
3525         /*
3526          * Set the WWNN and WWPN in the following way:
3527          *
3528          * If the info we get from qed is non-zero then use that to set the
3529          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3530          * on the MAC address.
3531          */
3532         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3533                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3534                     "Setting WWPN and WWNN from qed dev_info.\n");
3535                 qedf->wwnn = qedf->dev_info.wwnn;
3536                 qedf->wwpn = qedf->dev_info.wwpn;
3537         } else {
3538                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3539                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3540                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3541                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3542         }
3543         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3544                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3545
3546         sprintf(host_buf, "host_%d", host->host_no);
3547         qed_ops->common->set_name(qedf->cdev, host_buf);
3548
3549         /* Allocate cmd mgr */
3550         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3551         if (!qedf->cmd_mgr) {
3552                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3553                 rc = -ENOMEM;
3554                 goto err5;
3555         }
3556
3557         if (mode != QEDF_MODE_RECOVERY) {
3558                 host->transportt = qedf_fc_transport_template;
3559                 host->max_lun = qedf_max_lun;
3560                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3561                 host->max_id = QEDF_MAX_SESSIONS;
3562                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3563                 rc = scsi_add_host(host, &pdev->dev);
3564                 if (rc) {
3565                         QEDF_WARN(&qedf->dbg_ctx,
3566                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3567                         goto err6;
3568                 }
3569         }
3570
3571         memset(&params, 0, sizeof(params));
3572         params.mtu = QEDF_LL2_BUF_SIZE;
3573         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3574
3575         /* Start LL2 processing thread */
3576         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3577         qedf->ll2_recv_wq =
3578                 create_workqueue(host_buf);
3579         if (!qedf->ll2_recv_wq) {
3580                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3581                 rc = -ENOMEM;
3582                 goto err7;
3583         }
3584
3585 #ifdef CONFIG_DEBUG_FS
3586         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3587                             qedf_dbg_fops);
3588 #endif
3589
3590         /* Start LL2 */
3591         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3592         rc = qed_ops->ll2->start(qedf->cdev, &params);
3593         if (rc) {
3594                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3595                 goto err7;
3596         }
3597         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3598
3599         /* Set initial FIP/FCoE VLAN to NULL */
3600         qedf->vlan_id = 0;
3601
3602         /*
3603          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3604          * they were not reaped during the unload process.
3605          */
3606         if (mode != QEDF_MODE_RECOVERY) {
3607                 /* Setup imbedded fcoe controller */
3608                 qedf_fcoe_ctlr_setup(qedf);
3609
3610                 /* Setup lport */
3611                 rc = qedf_lport_setup(qedf);
3612                 if (rc) {
3613                         QEDF_ERR(&(qedf->dbg_ctx),
3614                             "qedf_lport_setup failed.\n");
3615                         goto err7;
3616                 }
3617         }
3618
3619         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3620         qedf->timer_work_queue =
3621                 create_workqueue(host_buf);
3622         if (!qedf->timer_work_queue) {
3623                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3624                           "workqueue.\n");
3625                 rc = -ENOMEM;
3626                 goto err7;
3627         }
3628
3629         /* DPC workqueue is not reaped during recovery unload */
3630         if (mode != QEDF_MODE_RECOVERY) {
3631                 sprintf(host_buf, "qedf_%u_dpc",
3632                     qedf->lport->host->host_no);
3633                 qedf->dpc_wq = create_workqueue(host_buf);
3634         }
3635         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3636
3637         /*
3638          * GRC dump and sysfs parameters are not reaped during the recovery
3639          * unload process.
3640          */
3641         if (mode != QEDF_MODE_RECOVERY) {
3642                 qedf->grcdump_size =
3643                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3644                 if (qedf->grcdump_size) {
3645                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3646                             qedf->grcdump_size);
3647                         if (rc) {
3648                                 QEDF_ERR(&(qedf->dbg_ctx),
3649                                     "GRC Dump buffer alloc failed.\n");
3650                                 qedf->grcdump = NULL;
3651                         }
3652
3653                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3654                             "grcdump: addr=%p, size=%u.\n",
3655                             qedf->grcdump, qedf->grcdump_size);
3656                 }
3657                 qedf_create_sysfs_ctx_attr(qedf);
3658
3659                 /* Initialize I/O tracing for this adapter */
3660                 spin_lock_init(&qedf->io_trace_lock);
3661                 qedf->io_trace_idx = 0;
3662         }
3663
3664         init_completion(&qedf->flogi_compl);
3665
3666         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3667         if (status)
3668                 QEDF_ERR(&(qedf->dbg_ctx),
3669                         "Failed to send drv state to MFW.\n");
3670
3671         memset(&link_params, 0, sizeof(struct qed_link_params));
3672         link_params.link_up = true;
3673         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3674         if (status)
3675                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3676
3677         /* Start/restart discovery */
3678         if (mode == QEDF_MODE_RECOVERY)
3679                 fcoe_ctlr_link_up(&qedf->ctlr);
3680         else
3681                 fc_fabric_login(lport);
3682
3683         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3684
3685         clear_bit(QEDF_PROBING, &qedf->flags);
3686
3687         /* All good */
3688         return 0;
3689
3690 err7:
3691         if (qedf->ll2_recv_wq)
3692                 destroy_workqueue(qedf->ll2_recv_wq);
3693         fc_remove_host(qedf->lport->host);
3694         scsi_remove_host(qedf->lport->host);
3695 #ifdef CONFIG_DEBUG_FS
3696         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3697 #endif
3698 err6:
3699         qedf_cmd_mgr_free(qedf->cmd_mgr);
3700 err5:
3701         qed_ops->stop(qedf->cdev);
3702 err4:
3703         qedf_free_fcoe_pf_param(qedf);
3704         qedf_sync_free_irqs(qedf);
3705 err3:
3706         qed_ops->common->slowpath_stop(qedf->cdev);
3707 err2:
3708         qed_ops->common->remove(qedf->cdev);
3709 err1:
3710         scsi_host_put(lport->host);
3711 err0:
3712         return rc;
3713 }
3714
3715 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3716 {
3717         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3718 }
3719
3720 static void __qedf_remove(struct pci_dev *pdev, int mode)
3721 {
3722         struct qedf_ctx *qedf;
3723         int rc;
3724
3725         if (!pdev) {
3726                 QEDF_ERR(NULL, "pdev is NULL.\n");
3727                 return;
3728         }
3729
3730         qedf = pci_get_drvdata(pdev);
3731
3732         /*
3733          * Prevent race where we're in board disable work and then try to
3734          * rmmod the module.
3735          */
3736         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3737                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3738                 return;
3739         }
3740
3741         if (mode != QEDF_MODE_RECOVERY)
3742                 set_bit(QEDF_UNLOADING, &qedf->flags);
3743
3744         /* Logoff the fabric to upload all connections */
3745         if (mode == QEDF_MODE_RECOVERY)
3746                 fcoe_ctlr_link_down(&qedf->ctlr);
3747         else
3748                 fc_fabric_logoff(qedf->lport);
3749
3750         if (!qedf_wait_for_upload(qedf))
3751                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3752
3753 #ifdef CONFIG_DEBUG_FS
3754         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3755 #endif
3756
3757         /* Stop any link update handling */
3758         cancel_delayed_work_sync(&qedf->link_update);
3759         destroy_workqueue(qedf->link_update_wq);
3760         qedf->link_update_wq = NULL;
3761
3762         if (qedf->timer_work_queue)
3763                 destroy_workqueue(qedf->timer_work_queue);
3764
3765         /* Stop Light L2 */
3766         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3767         qed_ops->ll2->stop(qedf->cdev);
3768         if (qedf->ll2_recv_wq)
3769                 destroy_workqueue(qedf->ll2_recv_wq);
3770
3771         /* Stop fastpath */
3772         qedf_sync_free_irqs(qedf);
3773         qedf_destroy_sb(qedf);
3774
3775         /*
3776          * During recovery don't destroy OS constructs that represent the
3777          * physical port.
3778          */
3779         if (mode != QEDF_MODE_RECOVERY) {
3780                 qedf_free_grc_dump_buf(&qedf->grcdump);
3781                 qedf_remove_sysfs_ctx_attr(qedf);
3782
3783                 /* Remove all SCSI/libfc/libfcoe structures */
3784                 fcoe_ctlr_destroy(&qedf->ctlr);
3785                 fc_lport_destroy(qedf->lport);
3786                 fc_remove_host(qedf->lport->host);
3787                 scsi_remove_host(qedf->lport->host);
3788         }
3789
3790         qedf_cmd_mgr_free(qedf->cmd_mgr);
3791
3792         if (mode != QEDF_MODE_RECOVERY) {
3793                 fc_exch_mgr_free(qedf->lport);
3794                 fc_lport_free_stats(qedf->lport);
3795
3796                 /* Wait for all vports to be reaped */
3797                 qedf_wait_for_vport_destroy(qedf);
3798         }
3799
3800         /*
3801          * Now that all connections have been uploaded we can stop the
3802          * rest of the qed operations
3803          */
3804         qed_ops->stop(qedf->cdev);
3805
3806         if (mode != QEDF_MODE_RECOVERY) {
3807                 if (qedf->dpc_wq) {
3808                         /* Stop general DPC handling */
3809                         destroy_workqueue(qedf->dpc_wq);
3810                         qedf->dpc_wq = NULL;
3811                 }
3812         }
3813
3814         /* Final shutdown for the board */
3815         qedf_free_fcoe_pf_param(qedf);
3816         if (mode != QEDF_MODE_RECOVERY) {
3817                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3818                 pci_set_drvdata(pdev, NULL);
3819         }
3820
3821         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3822         if (rc)
3823                 QEDF_ERR(&(qedf->dbg_ctx),
3824                         "Failed to send drv state to MFW.\n");
3825
3826         if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3827                 qed_ops->common->devlink_unregister(qedf->devlink);
3828                 qedf->devlink = NULL;
3829         }
3830
3831         qed_ops->common->slowpath_stop(qedf->cdev);
3832         qed_ops->common->remove(qedf->cdev);
3833
3834         mempool_destroy(qedf->io_mempool);
3835
3836         /* Only reap the Scsi_host on a real removal */
3837         if (mode != QEDF_MODE_RECOVERY)
3838                 scsi_host_put(qedf->lport->host);
3839 }
3840
3841 static void qedf_remove(struct pci_dev *pdev)
3842 {
3843         /* Check to make sure this function wasn't already disabled */
3844         if (!atomic_read(&pdev->enable_cnt))
3845                 return;
3846
3847         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3848 }
3849
3850 void qedf_wq_grcdump(struct work_struct *work)
3851 {
3852         struct qedf_ctx *qedf =
3853             container_of(work, struct qedf_ctx, grcdump_work.work);
3854
3855         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3856         qedf_capture_grc_dump(qedf);
3857 }
3858
3859 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3860 {
3861         struct qedf_ctx *qedf = dev;
3862
3863         QEDF_ERR(&(qedf->dbg_ctx),
3864                         "Hardware error handler scheduled, event=%d.\n",
3865                         err_type);
3866
3867         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3868                 QEDF_ERR(&(qedf->dbg_ctx),
3869                                 "Already in recovery, not scheduling board disable work.\n");
3870                 return;
3871         }
3872
3873         switch (err_type) {
3874         case QED_HW_ERR_FAN_FAIL:
3875                 schedule_delayed_work(&qedf->board_disable_work, 0);
3876                 break;
3877         case QED_HW_ERR_MFW_RESP_FAIL:
3878         case QED_HW_ERR_HW_ATTN:
3879         case QED_HW_ERR_DMAE_FAIL:
3880         case QED_HW_ERR_FW_ASSERT:
3881                 /* Prevent HW attentions from being reasserted */
3882                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3883                 break;
3884         case QED_HW_ERR_RAMROD_FAIL:
3885                 /* Prevent HW attentions from being reasserted */
3886                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3887
3888                 if (qedf_enable_recovery && qedf->devlink)
3889                         qed_ops->common->report_fatal_error(qedf->devlink,
3890                                 err_type);
3891
3892                 break;
3893         default:
3894                 break;
3895         }
3896 }
3897
3898 /*
3899  * Protocol TLV handler
3900  */
3901 void qedf_get_protocol_tlv_data(void *dev, void *data)
3902 {
3903         struct qedf_ctx *qedf = dev;
3904         struct qed_mfw_tlv_fcoe *fcoe = data;
3905         struct fc_lport *lport;
3906         struct Scsi_Host *host;
3907         struct fc_host_attrs *fc_host;
3908         struct fc_host_statistics *hst;
3909
3910         if (!qedf) {
3911                 QEDF_ERR(NULL, "qedf is null.\n");
3912                 return;
3913         }
3914
3915         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3916                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3917                 return;
3918         }
3919
3920         lport = qedf->lport;
3921         host = lport->host;
3922         fc_host = shost_to_fc_host(host);
3923
3924         /* Force a refresh of the fc_host stats including offload stats */
3925         hst = qedf_fc_get_host_stats(host);
3926
3927         fcoe->qos_pri_set = true;
3928         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3929
3930         fcoe->ra_tov_set = true;
3931         fcoe->ra_tov = lport->r_a_tov;
3932
3933         fcoe->ed_tov_set = true;
3934         fcoe->ed_tov = lport->e_d_tov;
3935
3936         fcoe->npiv_state_set = true;
3937         fcoe->npiv_state = 1; /* NPIV always enabled */
3938
3939         fcoe->num_npiv_ids_set = true;
3940         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3941
3942         /* Certain attributes we only want to set if we've selected an FCF */
3943         if (qedf->ctlr.sel_fcf) {
3944                 fcoe->switch_name_set = true;
3945                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3946         }
3947
3948         fcoe->port_state_set = true;
3949         /* For qedf we're either link down or fabric attach */
3950         if (lport->link_up)
3951                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3952         else
3953                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3954
3955         fcoe->link_failures_set = true;
3956         fcoe->link_failures = (u16)hst->link_failure_count;
3957
3958         fcoe->fcoe_txq_depth_set = true;
3959         fcoe->fcoe_rxq_depth_set = true;
3960         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3961         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3962
3963         fcoe->fcoe_rx_frames_set = true;
3964         fcoe->fcoe_rx_frames = hst->rx_frames;
3965
3966         fcoe->fcoe_tx_frames_set = true;
3967         fcoe->fcoe_tx_frames = hst->tx_frames;
3968
3969         fcoe->fcoe_rx_bytes_set = true;
3970         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3971
3972         fcoe->fcoe_tx_bytes_set = true;
3973         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3974
3975         fcoe->crc_count_set = true;
3976         fcoe->crc_count = hst->invalid_crc_count;
3977
3978         fcoe->tx_abts_set = true;
3979         fcoe->tx_abts = hst->fcp_packet_aborts;
3980
3981         fcoe->tx_lun_rst_set = true;
3982         fcoe->tx_lun_rst = qedf->lun_resets;
3983
3984         fcoe->abort_task_sets_set = true;
3985         fcoe->abort_task_sets = qedf->packet_aborts;
3986
3987         fcoe->scsi_busy_set = true;
3988         fcoe->scsi_busy = qedf->busy;
3989
3990         fcoe->scsi_tsk_full_set = true;
3991         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3992 }
3993
3994 /* Deferred work function to perform soft context reset on STAG change */
3995 void qedf_stag_change_work(struct work_struct *work)
3996 {
3997         struct qedf_ctx *qedf =
3998             container_of(work, struct qedf_ctx, stag_work.work);
3999
4000         printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
4001                         dev_name(&qedf->pdev->dev), __func__, __LINE__,
4002                         qedf->dbg_ctx.host_no);
4003         qedf_ctx_soft_reset(qedf->lport);
4004 }
4005
4006 static void qedf_shutdown(struct pci_dev *pdev)
4007 {
4008         __qedf_remove(pdev, QEDF_MODE_NORMAL);
4009 }
4010
4011 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
4012 {
4013         struct qedf_ctx *qedf;
4014
4015         if (!pdev) {
4016                 QEDF_ERR(NULL, "pdev is NULL.\n");
4017                 return -ENODEV;
4018         }
4019
4020         qedf = pci_get_drvdata(pdev);
4021
4022         QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
4023
4024         return -EPERM;
4025 }
4026
4027 /*
4028  * Recovery handler code
4029  */
4030 static void qedf_schedule_recovery_handler(void *dev)
4031 {
4032         struct qedf_ctx *qedf = dev;
4033
4034         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4035         schedule_delayed_work(&qedf->recovery_work, 0);
4036 }
4037
4038 static void qedf_recovery_handler(struct work_struct *work)
4039 {
4040         struct qedf_ctx *qedf =
4041             container_of(work, struct qedf_ctx, recovery_work.work);
4042
4043         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4044                 return;
4045
4046         /*
4047          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4048          * any PCI transactions.
4049          */
4050         qed_ops->common->recovery_prolog(qedf->cdev);
4051
4052         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4053         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4054         /*
4055          * Reset link and dcbx to down state since we will not get a link down
4056          * event from the MFW but calling __qedf_remove will essentially be a
4057          * link down event.
4058          */
4059         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4060         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4061         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4062         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4063         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4064 }
4065
4066 /* Generic TLV data callback */
4067 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4068 {
4069         struct qedf_ctx *qedf;
4070
4071         if (!dev) {
4072                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4073                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4074                 return;
4075         }
4076         qedf = (struct qedf_ctx *)dev;
4077
4078         memset(data, 0, sizeof(struct qed_generic_tlvs));
4079         ether_addr_copy(data->mac[0], qedf->mac);
4080 }
4081
4082 /*
4083  * Module Init/Remove
4084  */
4085
4086 static int __init qedf_init(void)
4087 {
4088         int ret;
4089
4090         /* If debug=1 passed, set the default log mask */
4091         if (qedf_debug == QEDF_LOG_DEFAULT)
4092                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4093
4094         /*
4095          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4096          * value has been set
4097          */
4098         if (qedf_default_prio > -1)
4099                 if (qedf_default_prio > 7) {
4100                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4101                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4102                             QEDF_DEFAULT_PRIO);
4103                 }
4104
4105         /* Print driver banner */
4106         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4107                    QEDF_VERSION);
4108
4109         /* Create kmem_cache for qedf_io_work structs */
4110         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4111             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4112         if (qedf_io_work_cache == NULL) {
4113                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4114                 goto err1;
4115         }
4116         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4117             qedf_io_work_cache);
4118
4119         qed_ops = qed_get_fcoe_ops();
4120         if (!qed_ops) {
4121                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4122                 goto err1;
4123         }
4124
4125 #ifdef CONFIG_DEBUG_FS
4126         qedf_dbg_init("qedf");
4127 #endif
4128
4129         qedf_fc_transport_template =
4130             fc_attach_transport(&qedf_fc_transport_fn);
4131         if (!qedf_fc_transport_template) {
4132                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4133                 goto err2;
4134         }
4135
4136         qedf_fc_vport_transport_template =
4137                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4138         if (!qedf_fc_vport_transport_template) {
4139                 QEDF_ERR(NULL, "Could not register vport template with FC "
4140                           "transport\n");
4141                 goto err3;
4142         }
4143
4144         qedf_io_wq = create_workqueue("qedf_io_wq");
4145         if (!qedf_io_wq) {
4146                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4147                 goto err4;
4148         }
4149
4150         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4151
4152         ret = pci_register_driver(&qedf_pci_driver);
4153         if (ret) {
4154                 QEDF_ERR(NULL, "Failed to register driver\n");
4155                 goto err5;
4156         }
4157
4158         return 0;
4159
4160 err5:
4161         destroy_workqueue(qedf_io_wq);
4162 err4:
4163         fc_release_transport(qedf_fc_vport_transport_template);
4164 err3:
4165         fc_release_transport(qedf_fc_transport_template);
4166 err2:
4167 #ifdef CONFIG_DEBUG_FS
4168         qedf_dbg_exit();
4169 #endif
4170         qed_put_fcoe_ops();
4171 err1:
4172         return -EINVAL;
4173 }
4174
4175 static void __exit qedf_cleanup(void)
4176 {
4177         pci_unregister_driver(&qedf_pci_driver);
4178
4179         destroy_workqueue(qedf_io_wq);
4180
4181         fc_release_transport(qedf_fc_vport_transport_template);
4182         fc_release_transport(qedf_fc_transport_template);
4183 #ifdef CONFIG_DEBUG_FS
4184         qedf_dbg_exit();
4185 #endif
4186         qed_put_fcoe_ops();
4187
4188         kmem_cache_destroy(qedf_io_work_cache);
4189 }
4190
4191 MODULE_LICENSE("GPL");
4192 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4193 MODULE_AUTHOR("QLogic Corporation");
4194 MODULE_VERSION(QEDF_VERSION);
4195 module_init(qedf_init);
4196 module_exit(qedf_cleanup);