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 <scsi/libfc.h>
  17 #include <scsi/scsi_host.h>
  18 #include <scsi/fc_frame.h>
  19 #include <linux/if_ether.h>
  20 #include <linux/if_vlan.h>
  21 #include <linux/cpu.h>
  22 #include "qedf.h"
  23 #include "qedf_dbg.h"
  24 #include <uapi/linux/pci_regs.h>
  25
  26 const struct qed_fcoe_ops *qed_ops;
  27
  28 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  29 static void qedf_remove(struct pci_dev *pdev);
  30 static void qedf_shutdown(struct pci_dev *pdev);
  31
  32 /*
  33  * Driver module parameters.
  34  */
  35 static unsigned int qedf_dev_loss_tmo = 60;
  36 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  37 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  38         "remote ports (default 60)");
  39
  40 uint qedf_debug = QEDF_LOG_INFO;
  41 module_param_named(debug, qedf_debug, uint, S_IRUGO);
  42 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  43         " mask");
  44
  45 static uint qedf_fipvlan_retries = 60;
  46 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  47 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  48         "before giving up (default 60)");
  49
  50 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  51 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  52 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  53         "(default 1002).");
  54
  55 static int qedf_default_prio = -1;
  56 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  57 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  58         " traffic (value between 0 and 7, default 3).");
  59
  60 uint qedf_dump_frames;
  61 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  62 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  63         "(default off)");
  64
  65 static uint qedf_queue_depth;
  66 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  67 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  68         "by the qedf driver. Default is 0 (use OS default).");
  69
  70 uint qedf_io_tracing;
  71 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  72 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  73         "into trace buffer. (default off).");
  74
  75 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  76 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  77 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  78         "supports. (default 0xffffffff)");
  79
  80 uint qedf_link_down_tmo;
  81 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  83         "link is down by N seconds.");
  84
  85 bool qedf_retry_delay;
  86 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  87 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  88         "delay handling (default off).");
  89
  90 static bool qedf_dcbx_no_wait;
  91 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  92 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  93         "sending FIP VLAN requests on link up (Default: off).");
  94
  95 static uint qedf_dp_module;
  96 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
  97 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
  98         "qed module during probe.");
  99
 100 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 101 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 102 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 103         "during probe (0-3: 0 more verbose).");
 104
 105 struct workqueue_struct *qedf_io_wq;
 106
 107 static struct fcoe_percpu_s qedf_global;
 108 static DEFINE_SPINLOCK(qedf_global_lock);
 109
 110 static struct kmem_cache *qedf_io_work_cache;
 111
 112 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 113 {
 114         int vlan_id_tmp = 0;
 115
 116         vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
 117         qedf->vlan_id = vlan_id_tmp;
 118         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 119                   "Setting vlan_id=0x%04x prio=%d.\n",
 120                   vlan_id_tmp, qedf->prio);
 121 }
 122
 123 /* Returns true if we have a valid vlan, false otherwise */
 124 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 125 {
 126
 127         while (qedf->fipvlan_retries--) {
 128                 /* This is to catch if link goes down during fipvlan retries */
 129                 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 130                         QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 131                         return false;
 132                 }
 133
 134                 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 135                         QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
 136                         return false;
 137                 }
 138
 139                 if (qedf->vlan_id > 0) {
 140                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 141                                   "vlan = 0x%x already set, calling ctlr_link_up.\n",
 142                                   qedf->vlan_id);
 143                         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 144                                 fcoe_ctlr_link_up(&qedf->ctlr);
 145                         return true;
 146                 }
 147
 148                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 149                            "Retry %d.\n", qedf->fipvlan_retries);
 150                 init_completion(&qedf->fipvlan_compl);
 151                 qedf_fcoe_send_vlan_req(qedf);
 152                 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
 153         }
 154
 155         return false;
 156 }
 157
 158 static void qedf_handle_link_update(struct work_struct *work)
 159 {
 160         struct qedf_ctx *qedf =
 161             container_of(work, struct qedf_ctx, link_update.work);
 162         int rc;
 163
 164         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
 165                   atomic_read(&qedf->link_state));
 166
 167         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 168                 rc = qedf_initiate_fipvlan_req(qedf);
 169                 if (rc)
 170                         return;
 171
 172                 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 173                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 174                                   "Link is down, resetting vlan_id.\n");
 175                         qedf->vlan_id = 0;
 176                         return;
 177                 }
 178
 179                 /*
 180                  * If we get here then we never received a repsonse to our
 181                  * fip vlan request so set the vlan_id to the default and
 182                  * tell FCoE that the link is up
 183                  */
 184                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 185                            "response, falling back to default VLAN %d.\n",
 186                            qedf_fallback_vlan);
 187                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 188
 189                 /*
 190                  * Zero out data_src_addr so we'll update it with the new
 191                  * lport port_id
 192                  */
 193                 eth_zero_addr(qedf->data_src_addr);
 194                 fcoe_ctlr_link_up(&qedf->ctlr);
 195         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 196                 /*
 197                  * If we hit here and link_down_tmo_valid is still 1 it means
 198                  * that link_down_tmo timed out so set it to 0 to make sure any
 199                  * other readers have accurate state.
 200                  */
 201                 atomic_set(&qedf->link_down_tmo_valid, 0);
 202                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 203                     "Calling fcoe_ctlr_link_down().\n");
 204                 fcoe_ctlr_link_down(&qedf->ctlr);
 205                 if (qedf_wait_for_upload(qedf) == false)
 206                         QEDF_ERR(&qedf->dbg_ctx,
 207                                  "Could not upload all sessions.\n");
 208                 /* Reset the number of FIP VLAN retries */
 209                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 210         }
 211 }
 212
 213 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 214 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 215 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 216 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 217 {
 218         u8 *granted_mac;
 219         struct fc_frame_header *fh = fc_frame_header_get(fp);
 220         u8 fc_map[3];
 221         int method = 0;
 222
 223         /* Get granted MAC address from FIP FLOGI payload */
 224         granted_mac = fr_cb(fp)->granted_mac;
 225
 226         /*
 227          * We set the source MAC for FCoE traffic based on the Granted MAC
 228          * address from the switch.
 229          *
 230          * If granted_mac is non-zero, we used that.
 231          * If the granted_mac is zeroed out, created the FCoE MAC based on
 232          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 233          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 234          * d_id of the FLOGI frame.
 235          */
 236         if (!is_zero_ether_addr(granted_mac)) {
 237                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 238                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 239         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 240                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 241                 qedf->data_src_addr[0] = fc_map[0];
 242                 qedf->data_src_addr[1] = fc_map[1];
 243                 qedf->data_src_addr[2] = fc_map[2];
 244                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 245                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 246                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 247                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 248         } else {
 249                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 250                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 251         }
 252
 253         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 254             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 255 }
 256
 257 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 258         void *arg)
 259 {
 260         struct fc_exch *exch = fc_seq_exch(seq);
 261         struct fc_lport *lport = exch->lp;
 262         struct qedf_ctx *qedf = lport_priv(lport);
 263
 264         if (!qedf) {
 265                 QEDF_ERR(NULL, "qedf is NULL.\n");
 266                 return;
 267         }
 268
 269         /*
 270          * If ERR_PTR is set then don't try to stat anything as it will cause
 271          * a crash when we access fp.
 272          */
 273         if (IS_ERR(fp)) {
 274                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 275                     "fp has IS_ERR() set.\n");
 276                 goto skip_stat;
 277         }
 278
 279         /* Log stats for FLOGI reject */
 280         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 281                 qedf->flogi_failed++;
 282         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 283                 /* Set the source MAC we will use for FCoE traffic */
 284                 qedf_set_data_src_addr(qedf, fp);
 285         }
 286
 287         /* Complete flogi_compl so we can proceed to sending ADISCs */
 288         complete(&qedf->flogi_compl);
 289
 290 skip_stat:
 291         /* Report response to libfc */
 292         fc_lport_flogi_resp(seq, fp, lport);
 293 }
 294
 295 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 296         struct fc_frame *fp, unsigned int op,
 297         void (*resp)(struct fc_seq *,
 298         struct fc_frame *,
 299         void *),
 300         void *arg, u32 timeout)
 301 {
 302         struct qedf_ctx *qedf = lport_priv(lport);
 303
 304         /*
 305          * Intercept FLOGI for statistic purposes. Note we use the resp
 306          * callback to tell if this is really a flogi.
 307          */
 308         if (resp == fc_lport_flogi_resp) {
 309                 qedf->flogi_cnt++;
 310                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 311                     arg, timeout);
 312         }
 313
 314         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 315 }
 316
 317 int qedf_send_flogi(struct qedf_ctx *qedf)
 318 {
 319         struct fc_lport *lport;
 320         struct fc_frame *fp;
 321
 322         lport = qedf->lport;
 323
 324         if (!lport->tt.elsct_send) {
 325                 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 326                 return -EINVAL;
 327         }
 328
 329         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 330         if (!fp) {
 331                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 332                 return -ENOMEM;
 333         }
 334
 335         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 336             "Sending FLOGI to reestablish session with switch.\n");
 337         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 338             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 339
 340         init_completion(&qedf->flogi_compl);
 341
 342         return 0;
 343 }
 344
 345 /*
 346  * This function is called if link_down_tmo is in use.  If we get a link up and
 347  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 348  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 349  */
 350 static void qedf_link_recovery(struct work_struct *work)
 351 {
 352         struct qedf_ctx *qedf =
 353             container_of(work, struct qedf_ctx, link_recovery.work);
 354         struct fc_lport *lport = qedf->lport;
 355         struct fc_rport_priv *rdata;
 356         bool rc;
 357         int retries = 30;
 358         int rval, i;
 359         struct list_head rdata_login_list;
 360
 361         INIT_LIST_HEAD(&rdata_login_list);
 362
 363         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 364             "Link down tmo did not expire.\n");
 365
 366         /*
 367          * Essentially reset the fcoe_ctlr here without affecting the state
 368          * of the libfc structs.
 369          */
 370         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 371         fcoe_ctlr_link_down(&qedf->ctlr);
 372
 373         /*
 374          * Bring the link up before we send the fipvlan request so libfcoe
 375          * can select a new fcf in parallel
 376          */
 377         fcoe_ctlr_link_up(&qedf->ctlr);
 378
 379         /* Since the link when down and up to verify which vlan we're on */
 380         qedf->fipvlan_retries = qedf_fipvlan_retries;
 381         rc = qedf_initiate_fipvlan_req(qedf);
 382         /* If getting the VLAN fails, set the VLAN to the fallback one */
 383         if (!rc)
 384                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 385
 386         /*
 387          * We need to wait for an FCF to be selected due to the
 388          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 389          */
 390         while (retries > 0) {
 391                 if (qedf->ctlr.sel_fcf) {
 392                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 393                             "FCF reselected, proceeding with FLOGI.\n");
 394                         break;
 395                 }
 396                 msleep(500);
 397                 retries--;
 398         }
 399
 400         if (retries < 1) {
 401                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 402                     "FCF selection.\n");
 403                 return;
 404         }
 405
 406         rval = qedf_send_flogi(qedf);
 407         if (rval)
 408                 return;
 409
 410         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 411         i = wait_for_completion_timeout(&qedf->flogi_compl,
 412             qedf->lport->r_a_tov);
 413         if (i == 0) {
 414                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 415                 return;
 416         }
 417
 418         /*
 419          * Call lport->tt.rport_login which will cause libfc to send an
 420          * ADISC since the rport is in state ready.
 421          */
 422         mutex_lock(&lport->disc.disc_mutex);
 423         list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 424                 if (kref_get_unless_zero(&rdata->kref)) {
 425                         fc_rport_login(rdata);
 426                         kref_put(&rdata->kref, fc_rport_destroy);
 427                 }
 428         }
 429         mutex_unlock(&lport->disc.disc_mutex);
 430 }
 431
 432 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 433         struct qed_link_output *link)
 434 {
 435         struct fc_lport *lport = qedf->lport;
 436
 437         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 438         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 439
 440         /* Set fc_host link speed */
 441         switch (link->speed) {
 442         case 10000:
 443                 lport->link_speed = FC_PORTSPEED_10GBIT;
 444                 break;
 445         case 25000:
 446                 lport->link_speed = FC_PORTSPEED_25GBIT;
 447                 break;
 448         case 40000:
 449                 lport->link_speed = FC_PORTSPEED_40GBIT;
 450                 break;
 451         case 50000:
 452                 lport->link_speed = FC_PORTSPEED_50GBIT;
 453                 break;
 454         case 100000:
 455                 lport->link_speed = FC_PORTSPEED_100GBIT;
 456                 break;
 457         case 20000:
 458                 lport->link_speed = FC_PORTSPEED_20GBIT;
 459                 break;
 460         default:
 461                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 462                 break;
 463         }
 464
 465         /*
 466          * Set supported link speed by querying the supported
 467          * capabilities of the link.
 468          */
 469         if ((link->supported_caps & QED_LM_10000baseT_Full_BIT) ||
 470             (link->supported_caps & QED_LM_10000baseKX4_Full_BIT) ||
 471             (link->supported_caps & QED_LM_10000baseR_FEC_BIT) ||
 472             (link->supported_caps & QED_LM_10000baseCR_Full_BIT) ||
 473             (link->supported_caps & QED_LM_10000baseSR_Full_BIT) ||
 474             (link->supported_caps & QED_LM_10000baseLR_Full_BIT) ||
 475             (link->supported_caps & QED_LM_10000baseLRM_Full_BIT) ||
 476             (link->supported_caps & QED_LM_10000baseKR_Full_BIT)) {
 477                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 478         }
 479         if ((link->supported_caps & QED_LM_25000baseKR_Full_BIT) ||
 480             (link->supported_caps & QED_LM_25000baseCR_Full_BIT) ||
 481             (link->supported_caps & QED_LM_25000baseSR_Full_BIT)) {
 482                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 483         }
 484         if ((link->supported_caps & QED_LM_40000baseLR4_Full_BIT) ||
 485             (link->supported_caps & QED_LM_40000baseKR4_Full_BIT) ||
 486             (link->supported_caps & QED_LM_40000baseCR4_Full_BIT) ||
 487             (link->supported_caps & QED_LM_40000baseSR4_Full_BIT)) {
 488                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 489         }
 490         if ((link->supported_caps & QED_LM_50000baseKR2_Full_BIT) ||
 491             (link->supported_caps & QED_LM_50000baseCR2_Full_BIT) ||
 492             (link->supported_caps & QED_LM_50000baseSR2_Full_BIT)) {
 493                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 494         }
 495         if ((link->supported_caps & QED_LM_100000baseKR4_Full_BIT) ||
 496             (link->supported_caps & QED_LM_100000baseSR4_Full_BIT) ||
 497             (link->supported_caps & QED_LM_100000baseCR4_Full_BIT) ||
 498             (link->supported_caps & QED_LM_100000baseLR4_ER4_Full_BIT)) {
 499                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 500         }
 501         if (link->supported_caps & QED_LM_20000baseKR2_Full_BIT)
 502                 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 503         fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
 504 }
 505
 506 static void qedf_link_update(void *dev, struct qed_link_output *link)
 507 {
 508         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 509
 510         /*
 511          * Prevent race where we're removing the module and we get link update
 512          * for qed.
 513          */
 514         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 515                 QEDF_ERR(&qedf->dbg_ctx,
 516                          "Ignore link update, driver getting unload.\n");
 517                 return;
 518         }
 519
 520         if (link->link_up) {
 521                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 522                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 523                             "Ignoring link up event as link is already up.\n");
 524                         return;
 525                 }
 526                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 527                     link->speed / 1000);
 528
 529                 /* Cancel any pending link down work */
 530                 cancel_delayed_work(&qedf->link_update);
 531
 532                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 533                 qedf_update_link_speed(qedf, link);
 534
 535                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 536                     qedf_dcbx_no_wait) {
 537                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 538                              "DCBx done.\n");
 539                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 540                                 queue_delayed_work(qedf->link_update_wq,
 541                                     &qedf->link_recovery, 0);
 542                         else
 543                                 queue_delayed_work(qedf->link_update_wq,
 544                                     &qedf->link_update, 0);
 545                         atomic_set(&qedf->link_down_tmo_valid, 0);
 546                 }
 547
 548         } else {
 549                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 550
 551                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 552                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 553                 /*
 554                  * Flag that we're waiting for the link to come back up before
 555                  * informing the fcoe layer of the event.
 556                  */
 557                 if (qedf_link_down_tmo > 0) {
 558                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 559                             "Starting link down tmo.\n");
 560                         atomic_set(&qedf->link_down_tmo_valid, 1);
 561                 }
 562                 qedf->vlan_id = 0;
 563                 qedf_update_link_speed(qedf, link);
 564                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 565                     qedf_link_down_tmo * HZ);
 566         }
 567 }
 568
 569
 570 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 571 {
 572         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 573         u8 tmp_prio;
 574
 575         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 576             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 577             get->operational.app_prio.fcoe);
 578
 579         if (get->operational.enabled && get->operational.valid) {
 580                 /* If DCBX was already negotiated on link up then just exit */
 581                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 582                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 583                             "DCBX already set on link up.\n");
 584                         return;
 585                 }
 586
 587                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 588
 589                 /*
 590                  * Set the 8021q priority in the following manner:
 591                  *
 592                  * 1. If a modparam is set use that
 593                  * 2. If the value is not between 0..7 use the default
 594                  * 3. Use the priority we get from the DCBX app tag
 595                  */
 596                 tmp_prio = get->operational.app_prio.fcoe;
 597                 if (qedf_default_prio > -1)
 598                         qedf->prio = qedf_default_prio;
 599                 else if (tmp_prio > 7) {
 600                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 601                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 602                             tmp_prio, QEDF_DEFAULT_PRIO);
 603                         qedf->prio = QEDF_DEFAULT_PRIO;
 604                 } else
 605                         qedf->prio = tmp_prio;
 606
 607                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 608                     !qedf_dcbx_no_wait) {
 609                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 610                                 queue_delayed_work(qedf->link_update_wq,
 611                                     &qedf->link_recovery, 0);
 612                         else
 613                                 queue_delayed_work(qedf->link_update_wq,
 614                                     &qedf->link_update, 0);
 615                         atomic_set(&qedf->link_down_tmo_valid, 0);
 616                 }
 617         }
 618
 619 }
 620
 621 static u32 qedf_get_login_failures(void *cookie)
 622 {
 623         struct qedf_ctx *qedf;
 624
 625         qedf = (struct qedf_ctx *)cookie;
 626         return qedf->flogi_failed;
 627 }
 628
 629 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 630         {
 631                 .link_update = qedf_link_update,
 632                 .dcbx_aen = qedf_dcbx_handler,
 633                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 634                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 635         }
 636 };
 637
 638 /*
 639  * Various transport templates.
 640  */
 641
 642 static struct scsi_transport_template *qedf_fc_transport_template;
 643 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 644
 645 /*
 646  * SCSI EH handlers
 647  */
 648 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 649 {
 650         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 651         struct fc_lport *lport;
 652         struct qedf_ctx *qedf;
 653         struct qedf_ioreq *io_req;
 654         struct fc_rport_libfc_priv *rp = rport->dd_data;
 655         struct fc_rport_priv *rdata;
 656         struct qedf_rport *fcport = NULL;
 657         int rc = FAILED;
 658         int wait_count = 100;
 659         int refcount = 0;
 660         int rval;
 661         int got_ref = 0;
 662
 663         lport = shost_priv(sc_cmd->device->host);
 664         qedf = (struct qedf_ctx *)lport_priv(lport);
 665
 666         /* rport and tgt are allocated together, so tgt should be non-NULL */
 667         fcport = (struct qedf_rport *)&rp[1];
 668         rdata = fcport->rdata;
 669         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 670                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 671                 rc = 1;
 672                 goto out;
 673         }
 674
 675
 676         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 677         if (!io_req) {
 678                 QEDF_ERR(&qedf->dbg_ctx,
 679                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 680                          sc_cmd, sc_cmd->cmnd[0],
 681                          rdata->ids.port_id);
 682                 rc = SUCCESS;
 683                 goto drop_rdata_kref;
 684         }
 685
 686         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 687         if (rval)
 688                 got_ref = 1;
 689
 690         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 691         if (!rval || io_req->sc_cmd != sc_cmd) {
 692                 QEDF_ERR(&qedf->dbg_ctx,
 693                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 694                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 695
 696                 goto drop_rdata_kref;
 697         }
 698
 699         if (fc_remote_port_chkready(rport)) {
 700                 refcount = kref_read(&io_req->refcount);
 701                 QEDF_ERR(&qedf->dbg_ctx,
 702                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 703                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 704                          refcount, rdata->ids.port_id);
 705
 706                 goto drop_rdata_kref;
 707         }
 708
 709         rc = fc_block_scsi_eh(sc_cmd);
 710         if (rc)
 711                 goto drop_rdata_kref;
 712
 713         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 714                 QEDF_ERR(&qedf->dbg_ctx,
 715                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 716                          io_req->xid, rdata->ids.port_id);
 717                 while (io_req->sc_cmd && (wait_count != 0)) {
 718                         msleep(100);
 719                         wait_count--;
 720                 }
 721                 if (wait_count) {
 722                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 723                         rc = SUCCESS;
 724                 } else {
 725                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 726                         rc = FAILED;
 727                 }
 728                 goto drop_rdata_kref;
 729         }
 730
 731         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 732                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 733                 goto drop_rdata_kref;
 734         }
 735
 736         QEDF_ERR(&qedf->dbg_ctx,
 737                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 738                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 739                  rdata->ids.port_id);
 740
 741         if (qedf->stop_io_on_error) {
 742                 qedf_stop_all_io(qedf);
 743                 rc = SUCCESS;
 744                 goto drop_rdata_kref;
 745         }
 746
 747         init_completion(&io_req->abts_done);
 748         rval = qedf_initiate_abts(io_req, true);
 749         if (rval) {
 750                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 751                 /*
 752                  * If we fail to queue the ABTS then return this command to
 753                  * the SCSI layer as it will own and free the xid
 754                  */
 755                 rc = SUCCESS;
 756                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 757                 goto drop_rdata_kref;
 758         }
 759
 760         wait_for_completion(&io_req->abts_done);
 761
 762         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 763             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 764             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 765                 /*
 766                  * If we get a reponse to the abort this is success from
 767                  * the perspective that all references to the command have
 768                  * been removed from the driver and firmware
 769                  */
 770                 rc = SUCCESS;
 771         } else {
 772                 /* If the abort and cleanup failed then return a failure */
 773                 rc = FAILED;
 774         }
 775
 776         if (rc == SUCCESS)
 777                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 778                           io_req->xid);
 779         else
 780                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 781                           io_req->xid);
 782
 783 drop_rdata_kref:
 784         kref_put(&rdata->kref, fc_rport_destroy);
 785 out:
 786         if (got_ref)
 787                 kref_put(&io_req->refcount, qedf_release_cmd);
 788         return rc;
 789 }
 790
 791 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 792 {
 793         QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
 794                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 795                  sc_cmd->device->lun);
 796         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 797 }
 798
 799 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 800 {
 801         QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
 802                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 803                  sc_cmd->device->lun);
 804         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 805 }
 806
 807 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 808 {
 809         struct qedf_rport *fcport = NULL;
 810         int wait_cnt = 120;
 811
 812         while (wait_cnt--) {
 813                 if (atomic_read(&qedf->num_offloads))
 814                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 815                                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 816                                   atomic_read(&qedf->num_offloads));
 817                 else
 818                         return true;
 819                 msleep(500);
 820         }
 821
 822         rcu_read_lock();
 823         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 824                 if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
 825                                        &fcport->flags)) {
 826                         if (fcport->rdata)
 827                                 QEDF_ERR(&qedf->dbg_ctx,
 828                                          "Waiting for fcport %p portid=%06x.\n",
 829                                          fcport, fcport->rdata->ids.port_id);
 830                         } else {
 831                                 QEDF_ERR(&qedf->dbg_ctx,
 832                                          "Waiting for fcport %p.\n", fcport);
 833                         }
 834         }
 835         rcu_read_unlock();
 836         return false;
 837
 838 }
 839
 840 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 841 void qedf_ctx_soft_reset(struct fc_lport *lport)
 842 {
 843         struct qedf_ctx *qedf;
 844         struct qed_link_output if_link;
 845
 846         if (lport->vport) {
 847                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 848                 return;
 849         }
 850
 851         qedf = lport_priv(lport);
 852
 853         /* For host reset, essentially do a soft link up/down */
 854         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 855         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 856                   "Queuing link down work.\n");
 857         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 858             0);
 859
 860         if (qedf_wait_for_upload(qedf) == false) {
 861                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 862                 WARN_ON(atomic_read(&qedf->num_offloads));
 863         }
 864
 865         /* Before setting link up query physical link state */
 866         qed_ops->common->get_link(qedf->cdev, &if_link);
 867         /* Bail if the physical link is not up */
 868         if (!if_link.link_up) {
 869                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 870                           "Physical link is not up.\n");
 871                 return;
 872         }
 873         /* Flush and wait to make sure link down is processed */
 874         flush_delayed_work(&qedf->link_update);
 875         msleep(500);
 876
 877         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 878         qedf->vlan_id  = 0;
 879         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 880                   "Queue link up work.\n");
 881         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 882             0);
 883 }
 884
 885 /* Reset the host by gracefully logging out and then logging back in */
 886 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 887 {
 888         struct fc_lport *lport;
 889         struct qedf_ctx *qedf;
 890
 891         lport = shost_priv(sc_cmd->device->host);
 892         qedf = lport_priv(lport);
 893
 894         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 895             test_bit(QEDF_UNLOADING, &qedf->flags))
 896                 return FAILED;
 897
 898         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 899
 900         qedf_ctx_soft_reset(lport);
 901
 902         return SUCCESS;
 903 }
 904
 905 static int qedf_slave_configure(struct scsi_device *sdev)
 906 {
 907         if (qedf_queue_depth) {
 908                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 909         }
 910
 911         return 0;
 912 }
 913
 914 static struct scsi_host_template qedf_host_template = {
 915         .module         = THIS_MODULE,
 916         .name           = QEDF_MODULE_NAME,
 917         .this_id        = -1,
 918         .cmd_per_lun    = 32,
 919         .max_sectors    = 0xffff,
 920         .queuecommand   = qedf_queuecommand,
 921         .shost_attrs    = qedf_host_attrs,
 922         .eh_abort_handler       = qedf_eh_abort,
 923         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 924         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 925         .eh_host_reset_handler  = qedf_eh_host_reset,
 926         .slave_configure        = qedf_slave_configure,
 927         .dma_boundary = QED_HW_DMA_BOUNDARY,
 928         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 929         .can_queue = FCOE_PARAMS_NUM_TASKS,
 930         .change_queue_depth = scsi_change_queue_depth,
 931 };
 932
 933 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 934 {
 935         int rc;
 936
 937         spin_lock(&qedf_global_lock);
 938         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 939         spin_unlock(&qedf_global_lock);
 940
 941         return rc;
 942 }
 943
 944 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 945 {
 946         struct qedf_rport *fcport;
 947         struct fc_rport_priv *rdata;
 948
 949         rcu_read_lock();
 950         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 951                 rdata = fcport->rdata;
 952                 if (rdata == NULL)
 953                         continue;
 954                 if (rdata->ids.port_id == port_id) {
 955                         rcu_read_unlock();
 956                         return fcport;
 957                 }
 958         }
 959         rcu_read_unlock();
 960
 961         /* Return NULL to caller to let them know fcport was not found */
 962         return NULL;
 963 }
 964
 965 /* Transmits an ELS frame over an offloaded session */
 966 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 967 {
 968         struct fc_frame_header *fh;
 969         int rc = 0;
 970
 971         fh = fc_frame_header_get(fp);
 972         if ((fh->fh_type == FC_TYPE_ELS) &&
 973             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 974                 switch (fc_frame_payload_op(fp)) {
 975                 case ELS_ADISC:
 976                         qedf_send_adisc(fcport, fp);
 977                         rc = 1;
 978                         break;
 979                 }
 980         }
 981
 982         return rc;
 983 }
 984
 985 /**
 986  * qedf_xmit - qedf FCoE frame transmit function
 987  *
 988  */
 989 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 990 {
 991         struct fc_lport         *base_lport;
 992         struct qedf_ctx         *qedf;
 993         struct ethhdr           *eh;
 994         struct fcoe_crc_eof     *cp;
 995         struct sk_buff          *skb;
 996         struct fc_frame_header  *fh;
 997         struct fcoe_hdr         *hp;
 998         u8                      sof, eof;
 999         u32                     crc;
1000         unsigned int            hlen, tlen, elen;
1001         int                     wlen;
1002         struct fc_stats         *stats;
1003         struct fc_lport *tmp_lport;
1004         struct fc_lport *vn_port = NULL;
1005         struct qedf_rport *fcport;
1006         int rc;
1007         u16 vlan_tci = 0;
1008
1009         qedf = (struct qedf_ctx *)lport_priv(lport);
1010
1011         fh = fc_frame_header_get(fp);
1012         skb = fp_skb(fp);
1013
1014         /* Filter out traffic to other NPIV ports on the same host */
1015         if (lport->vport)
1016                 base_lport = shost_priv(vport_to_shost(lport->vport));
1017         else
1018                 base_lport = lport;
1019
1020         /* Flag if the destination is the base port */
1021         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1022                 vn_port = base_lport;
1023         } else {
1024                 /* Got through the list of vports attached to the base_lport
1025                  * and see if we have a match with the destination address.
1026                  */
1027                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1028                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1029                                 vn_port = tmp_lport;
1030                                 break;
1031                         }
1032                 }
1033         }
1034         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1035                 struct fc_rport_priv *rdata = NULL;
1036
1037                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1038                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1039                 kfree_skb(skb);
1040                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1041                 if (rdata) {
1042                         rdata->retries = lport->max_rport_retry_count;
1043                         kref_put(&rdata->kref, fc_rport_destroy);
1044                 }
1045                 return -EINVAL;
1046         }
1047         /* End NPIV filtering */
1048
1049         if (!qedf->ctlr.sel_fcf) {
1050                 kfree_skb(skb);
1051                 return 0;
1052         }
1053
1054         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1055                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1056                 kfree_skb(skb);
1057                 return 0;
1058         }
1059
1060         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1061                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1062                 kfree_skb(skb);
1063                 return 0;
1064         }
1065
1066         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1067                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1068                         return 0;
1069         }
1070
1071         /* Check to see if this needs to be sent on an offloaded session */
1072         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1073
1074         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1075                 rc = qedf_xmit_l2_frame(fcport, fp);
1076                 /*
1077                  * If the frame was successfully sent over the middle path
1078                  * then do not try to also send it over the LL2 path
1079                  */
1080                 if (rc)
1081                         return 0;
1082         }
1083
1084         sof = fr_sof(fp);
1085         eof = fr_eof(fp);
1086
1087         elen = sizeof(struct ethhdr);
1088         hlen = sizeof(struct fcoe_hdr);
1089         tlen = sizeof(struct fcoe_crc_eof);
1090         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1091
1092         skb->ip_summed = CHECKSUM_NONE;
1093         crc = fcoe_fc_crc(fp);
1094
1095         /* copy port crc and eof to the skb buff */
1096         if (skb_is_nonlinear(skb)) {
1097                 skb_frag_t *frag;
1098
1099                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1100                         kfree_skb(skb);
1101                         return -ENOMEM;
1102                 }
1103                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1104                 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1105         } else {
1106                 cp = skb_put(skb, tlen);
1107         }
1108
1109         memset(cp, 0, sizeof(*cp));
1110         cp->fcoe_eof = eof;
1111         cp->fcoe_crc32 = cpu_to_le32(~crc);
1112         if (skb_is_nonlinear(skb)) {
1113                 kunmap_atomic(cp);
1114                 cp = NULL;
1115         }
1116
1117
1118         /* adjust skb network/transport offsets to match mac/fcoe/port */
1119         skb_push(skb, elen + hlen);
1120         skb_reset_mac_header(skb);
1121         skb_reset_network_header(skb);
1122         skb->mac_len = elen;
1123         skb->protocol = htons(ETH_P_FCOE);
1124
1125         /*
1126          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1127          * for FIP/FCoE traffic.
1128          */
1129         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1130
1131         /* fill up mac and fcoe headers */
1132         eh = eth_hdr(skb);
1133         eh->h_proto = htons(ETH_P_FCOE);
1134         if (qedf->ctlr.map_dest)
1135                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1136         else
1137                 /* insert GW address */
1138                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1139
1140         /* Set the source MAC address */
1141         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1142
1143         hp = (struct fcoe_hdr *)(eh + 1);
1144         memset(hp, 0, sizeof(*hp));
1145         if (FC_FCOE_VER)
1146                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1147         hp->fcoe_sof = sof;
1148
1149         /*update tx stats */
1150         stats = per_cpu_ptr(lport->stats, get_cpu());
1151         stats->TxFrames++;
1152         stats->TxWords += wlen;
1153         put_cpu();
1154
1155         /* Get VLAN ID from skb for printing purposes */
1156         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1157
1158         /* send down to lld */
1159         fr_dev(fp) = lport;
1160         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1161             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1162             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1163             vlan_tci);
1164         if (qedf_dump_frames)
1165                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1166                     1, skb->data, skb->len, false);
1167         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1168         if (rc) {
1169                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1170                 kfree_skb(skb);
1171                 return rc;
1172         }
1173
1174         return 0;
1175 }
1176
1177 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1178 {
1179         int rval = 0;
1180         u32 *pbl;
1181         dma_addr_t page;
1182         int num_pages;
1183
1184         /* Calculate appropriate queue and PBL sizes */
1185         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1186         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1187         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1188             sizeof(void *);
1189         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1190
1191         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1192                                         &fcport->sq_dma, GFP_KERNEL);
1193         if (!fcport->sq) {
1194                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1195                 rval = 1;
1196                 goto out;
1197         }
1198
1199         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1200                                             fcport->sq_pbl_size,
1201                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1202         if (!fcport->sq_pbl) {
1203                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1204                 rval = 1;
1205                 goto out_free_sq;
1206         }
1207
1208         /* Create PBL */
1209         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1210         page = fcport->sq_dma;
1211         pbl = (u32 *)fcport->sq_pbl;
1212
1213         while (num_pages--) {
1214                 *pbl = U64_LO(page);
1215                 pbl++;
1216                 *pbl = U64_HI(page);
1217                 pbl++;
1218                 page += QEDF_PAGE_SIZE;
1219         }
1220
1221         return rval;
1222
1223 out_free_sq:
1224         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1225             fcport->sq_dma);
1226 out:
1227         return rval;
1228 }
1229
1230 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1231 {
1232         if (fcport->sq_pbl)
1233                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1234                     fcport->sq_pbl, fcport->sq_pbl_dma);
1235         if (fcport->sq)
1236                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1237                     fcport->sq, fcport->sq_dma);
1238 }
1239
1240 static int qedf_offload_connection(struct qedf_ctx *qedf,
1241         struct qedf_rport *fcport)
1242 {
1243         struct qed_fcoe_params_offload conn_info;
1244         u32 port_id;
1245         int rval;
1246         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1247
1248         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1249                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1250         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1251             &fcport->fw_cid, &fcport->p_doorbell);
1252         if (rval) {
1253                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1254                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1255                 rval = 1; /* For some reason qed returns 0 on failure here */
1256                 goto out;
1257         }
1258
1259         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1260                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1261                    fcport->fw_cid, fcport->handle);
1262
1263         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1264
1265         /* Fill in the offload connection info */
1266         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1267
1268         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1269         conn_info.sq_next_page_addr =
1270             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1271
1272         /* Need to use our FCoE MAC for the offload session */
1273         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1274
1275         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1276
1277         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1278         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1279         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1280         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1281
1282         /* Set VLAN data */
1283         conn_info.vlan_tag = qedf->vlan_id <<
1284             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1285         conn_info.vlan_tag |=
1286             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1287         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1288             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1289
1290         /* Set host port source id */
1291         port_id = fc_host_port_id(qedf->lport->host);
1292         fcport->sid = port_id;
1293         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1294         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1295         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1296
1297         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1298
1299         /* Set remote port destination id */
1300         port_id = fcport->rdata->rport->port_id;
1301         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1302         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1303         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1304
1305         conn_info.def_q_idx = 0; /* Default index for send queue? */
1306
1307         /* Set FC-TAPE specific flags if needed */
1308         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1309                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1310                     "Enable CONF, REC for portid=%06x.\n",
1311                     fcport->rdata->ids.port_id);
1312                 conn_info.flags |= 1 <<
1313                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1314                 conn_info.flags |=
1315                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1316                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1317         }
1318
1319         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1320         if (rval) {
1321                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1322                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1323                 goto out_free_conn;
1324         } else
1325                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1326                            "succeeded portid=%06x total_sqe=%d.\n",
1327                            fcport->rdata->ids.port_id, total_sqe);
1328
1329         spin_lock_init(&fcport->rport_lock);
1330         atomic_set(&fcport->free_sqes, total_sqe);
1331         return 0;
1332 out_free_conn:
1333         qed_ops->release_conn(qedf->cdev, fcport->handle);
1334 out:
1335         return rval;
1336 }
1337
1338 #define QEDF_TERM_BUFF_SIZE             10
1339 static void qedf_upload_connection(struct qedf_ctx *qedf,
1340         struct qedf_rport *fcport)
1341 {
1342         void *term_params;
1343         dma_addr_t term_params_dma;
1344
1345         /* Term params needs to be a DMA coherent buffer as qed shared the
1346          * physical DMA address with the firmware. The buffer may be used in
1347          * the receive path so we may eventually have to move this.
1348          */
1349         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1350                 &term_params_dma, GFP_KERNEL);
1351
1352         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1353                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1354
1355         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1356         qed_ops->release_conn(qedf->cdev, fcport->handle);
1357
1358         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1359             term_params_dma);
1360 }
1361
1362 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1363         struct qedf_rport *fcport)
1364 {
1365         struct fc_rport_priv *rdata = fcport->rdata;
1366
1367         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1368             fcport->rdata->ids.port_id);
1369
1370         /* Flush any remaining i/o's before we upload the connection */
1371         qedf_flush_active_ios(fcport, -1);
1372
1373         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1374                 qedf_upload_connection(qedf, fcport);
1375         qedf_free_sq(qedf, fcport);
1376         fcport->rdata = NULL;
1377         fcport->qedf = NULL;
1378         kref_put(&rdata->kref, fc_rport_destroy);
1379 }
1380
1381 /**
1382  * This event_callback is called after successful completion of libfc
1383  * initiated target login. qedf can proceed with initiating the session
1384  * establishment.
1385  */
1386 static void qedf_rport_event_handler(struct fc_lport *lport,
1387                                 struct fc_rport_priv *rdata,
1388                                 enum fc_rport_event event)
1389 {
1390         struct qedf_ctx *qedf = lport_priv(lport);
1391         struct fc_rport *rport = rdata->rport;
1392         struct fc_rport_libfc_priv *rp;
1393         struct qedf_rport *fcport;
1394         u32 port_id;
1395         int rval;
1396         unsigned long flags;
1397
1398         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1399                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1400
1401         switch (event) {
1402         case RPORT_EV_READY:
1403                 if (!rport) {
1404                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1405                         break;
1406                 }
1407
1408                 rp = rport->dd_data;
1409                 fcport = (struct qedf_rport *)&rp[1];
1410                 fcport->qedf = qedf;
1411
1412                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1413                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1414                             "portid=0x%x as max number of offloaded sessions "
1415                             "reached.\n", rdata->ids.port_id);
1416                         return;
1417                 }
1418
1419                 /*
1420                  * Don't try to offload the session again. Can happen when we
1421                  * get an ADISC
1422                  */
1423                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1424                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1425                                    "offloaded, portid=0x%x.\n",
1426                                    rdata->ids.port_id);
1427                         return;
1428                 }
1429
1430                 if (rport->port_id == FC_FID_DIR_SERV) {
1431                         /*
1432                          * qedf_rport structure doesn't exist for
1433                          * directory server.
1434                          * We should not come here, as lport will
1435                          * take care of fabric login
1436                          */
1437                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1438                             "exist for dir server port_id=%x\n",
1439                             rdata->ids.port_id);
1440                         break;
1441                 }
1442
1443                 if (rdata->spp_type != FC_TYPE_FCP) {
1444                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1445                             "Not offloading since spp type isn't FCP\n");
1446                         break;
1447                 }
1448                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1449                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1450                             "Not FCP target so not offloading\n");
1451                         break;
1452                 }
1453
1454                 /* Initial reference held on entry, so this can't fail */
1455                 kref_get(&rdata->kref);
1456                 fcport->rdata = rdata;
1457                 fcport->rport = rport;
1458
1459                 rval = qedf_alloc_sq(qedf, fcport);
1460                 if (rval) {
1461                         qedf_cleanup_fcport(qedf, fcport);
1462                         break;
1463                 }
1464
1465                 /* Set device type */
1466                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1467                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1468                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1469                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1470                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1471                             "portid=%06x is a TAPE device.\n",
1472                             rdata->ids.port_id);
1473                 } else {
1474                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1475                 }
1476
1477                 rval = qedf_offload_connection(qedf, fcport);
1478                 if (rval) {
1479                         qedf_cleanup_fcport(qedf, fcport);
1480                         break;
1481                 }
1482
1483                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1484                 spin_lock_irqsave(&qedf->hba_lock, flags);
1485                 list_add_rcu(&fcport->peers, &qedf->fcports);
1486                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1487
1488                 /*
1489                  * Set the session ready bit to let everyone know that this
1490                  * connection is ready for I/O
1491                  */
1492                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1493                 atomic_inc(&qedf->num_offloads);
1494
1495                 break;
1496         case RPORT_EV_LOGO:
1497         case RPORT_EV_FAILED:
1498         case RPORT_EV_STOP:
1499                 port_id = rdata->ids.port_id;
1500                 if (port_id == FC_FID_DIR_SERV)
1501                         break;
1502
1503                 if (!rport) {
1504                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1505                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1506                         break;
1507                 }
1508                 rp = rport->dd_data;
1509                 /*
1510                  * Perform session upload. Note that rdata->peers is already
1511                  * removed from disc->rports list before we get this event.
1512                  */
1513                 fcport = (struct qedf_rport *)&rp[1];
1514
1515                 spin_lock_irqsave(&fcport->rport_lock, flags);
1516                 /* Only free this fcport if it is offloaded already */
1517                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1518                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1519                     &fcport->flags)) {
1520                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1521                                 &fcport->flags);
1522                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1523                         qedf_cleanup_fcport(qedf, fcport);
1524                         /*
1525                          * Remove fcport to list of qedf_ctx list of offloaded
1526                          * ports
1527                          */
1528                         spin_lock_irqsave(&qedf->hba_lock, flags);
1529                         list_del_rcu(&fcport->peers);
1530                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1531
1532                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1533                             &fcport->flags);
1534                         atomic_dec(&qedf->num_offloads);
1535                 } else {
1536                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1537                 }
1538                 break;
1539
1540         case RPORT_EV_NONE:
1541                 break;
1542         }
1543 }
1544
1545 static void qedf_abort_io(struct fc_lport *lport)
1546 {
1547         /* NO-OP but need to fill in the template */
1548 }
1549
1550 static void qedf_fcp_cleanup(struct fc_lport *lport)
1551 {
1552         /*
1553          * NO-OP but need to fill in template to prevent a NULL
1554          * function pointer dereference during link down. I/Os
1555          * will be flushed when port is uploaded.
1556          */
1557 }
1558
1559 static struct libfc_function_template qedf_lport_template = {
1560         .frame_send             = qedf_xmit,
1561         .fcp_abort_io           = qedf_abort_io,
1562         .fcp_cleanup            = qedf_fcp_cleanup,
1563         .rport_event_callback   = qedf_rport_event_handler,
1564         .elsct_send             = qedf_elsct_send,
1565 };
1566
1567 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1568 {
1569         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1570
1571         qedf->ctlr.send = qedf_fip_send;
1572         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1573         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1574 }
1575
1576 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1577 {
1578         struct fc_lport *lport = qedf->lport;
1579         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1580         u8 buf[8];
1581         int i, pos;
1582
1583         /*
1584          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1585          */
1586         lport->fdmi_enabled = 1;
1587
1588         /*
1589          * Setup the necessary fc_host attributes to that will be used to fill
1590          * in the FDMI information.
1591          */
1592
1593         /* Get the PCI-e Device Serial Number Capability */
1594         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1595         if (pos) {
1596                 pos += 4;
1597                 for (i = 0; i < 8; i++)
1598                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1599
1600                 snprintf(fc_host->serial_number,
1601                     sizeof(fc_host->serial_number),
1602                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1603                     buf[7], buf[6], buf[5], buf[4],
1604                     buf[3], buf[2], buf[1], buf[0]);
1605         } else
1606                 snprintf(fc_host->serial_number,
1607                     sizeof(fc_host->serial_number), "Unknown");
1608
1609         snprintf(fc_host->manufacturer,
1610             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1611
1612         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1613
1614         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1615             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1616             "(FCoE)");
1617
1618         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1619             "Rev %d", qedf->pdev->revision);
1620
1621         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1622             "%s", QEDF_VERSION);
1623
1624         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1625             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1626             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1627 }
1628
1629 static int qedf_lport_setup(struct qedf_ctx *qedf)
1630 {
1631         struct fc_lport *lport = qedf->lport;
1632
1633         lport->link_up = 0;
1634         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1635         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1636         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1637             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1638         lport->boot_time = jiffies;
1639         lport->e_d_tov = 2 * 1000;
1640         lport->r_a_tov = 10 * 1000;
1641
1642         /* Set NPIV support */
1643         lport->does_npiv = 1;
1644         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1645
1646         fc_set_wwnn(lport, qedf->wwnn);
1647         fc_set_wwpn(lport, qedf->wwpn);
1648
1649         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1650                 QEDF_ERR(&qedf->dbg_ctx,
1651                          "fcoe_libfc_config failed.\n");
1652                 return -ENOMEM;
1653         }
1654
1655         /* Allocate the exchange manager */
1656         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1657                           0xfffe, NULL);
1658
1659         if (fc_lport_init_stats(lport))
1660                 return -ENOMEM;
1661
1662         /* Finish lport config */
1663         fc_lport_config(lport);
1664
1665         /* Set max frame size */
1666         fc_set_mfs(lport, QEDF_MFS);
1667         fc_host_maxframe_size(lport->host) = lport->mfs;
1668
1669         /* Set default dev_loss_tmo based on module parameter */
1670         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1671
1672         /* Set symbolic node name */
1673         snprintf(fc_host_symbolic_name(lport->host), 256,
1674             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1675
1676         qedf_setup_fdmi(qedf);
1677
1678         return 0;
1679 }
1680
1681 /*
1682  * NPIV functions
1683  */
1684
1685 static int qedf_vport_libfc_config(struct fc_vport *vport,
1686         struct fc_lport *lport)
1687 {
1688         lport->link_up = 0;
1689         lport->qfull = 0;
1690         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1691         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1692         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1693             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1694         lport->boot_time = jiffies;
1695         lport->e_d_tov = 2 * 1000;
1696         lport->r_a_tov = 10 * 1000;
1697         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1698
1699         /* Allocate stats for vport */
1700         if (fc_lport_init_stats(lport))
1701                 return -ENOMEM;
1702
1703         /* Finish lport config */
1704         fc_lport_config(lport);
1705
1706         /* offload related configuration */
1707         lport->crc_offload = 0;
1708         lport->seq_offload = 0;
1709         lport->lro_enabled = 0;
1710         lport->lro_xid = 0;
1711         lport->lso_max = 0;
1712
1713         return 0;
1714 }
1715
1716 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1717 {
1718         struct Scsi_Host *shost = vport_to_shost(vport);
1719         struct fc_lport *n_port = shost_priv(shost);
1720         struct fc_lport *vn_port;
1721         struct qedf_ctx *base_qedf = lport_priv(n_port);
1722         struct qedf_ctx *vport_qedf;
1723
1724         char buf[32];
1725         int rc = 0;
1726
1727         rc = fcoe_validate_vport_create(vport);
1728         if (rc) {
1729                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1730                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1731                            "WWPN (0x%s) already exists.\n", buf);
1732                 goto err1;
1733         }
1734
1735         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1736                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1737                            "because link is not up.\n");
1738                 rc = -EIO;
1739                 goto err1;
1740         }
1741
1742         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1743         if (!vn_port) {
1744                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1745                            "for vport.\n");
1746                 rc = -ENOMEM;
1747                 goto err1;
1748         }
1749
1750         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1751         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1752             buf);
1753
1754         /* Copy some fields from base_qedf */
1755         vport_qedf = lport_priv(vn_port);
1756         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1757
1758         /* Set qedf data specific to this vport */
1759         vport_qedf->lport = vn_port;
1760         /* Use same hba_lock as base_qedf */
1761         vport_qedf->hba_lock = base_qedf->hba_lock;
1762         vport_qedf->pdev = base_qedf->pdev;
1763         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1764         init_completion(&vport_qedf->flogi_compl);
1765         INIT_LIST_HEAD(&vport_qedf->fcports);
1766
1767         rc = qedf_vport_libfc_config(vport, vn_port);
1768         if (rc) {
1769                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1770                     "for lport stats.\n");
1771                 goto err2;
1772         }
1773
1774         fc_set_wwnn(vn_port, vport->node_name);
1775         fc_set_wwpn(vn_port, vport->port_name);
1776         vport_qedf->wwnn = vn_port->wwnn;
1777         vport_qedf->wwpn = vn_port->wwpn;
1778
1779         vn_port->host->transportt = qedf_fc_vport_transport_template;
1780         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1781         vn_port->host->max_lun = qedf_max_lun;
1782         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1783         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1784
1785         rc = scsi_add_host(vn_port->host, &vport->dev);
1786         if (rc) {
1787                 QEDF_WARN(&base_qedf->dbg_ctx,
1788                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1789                 goto err2;
1790         }
1791
1792         /* Set default dev_loss_tmo based on module parameter */
1793         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1794
1795         /* Init libfc stuffs */
1796         memcpy(&vn_port->tt, &qedf_lport_template,
1797                 sizeof(qedf_lport_template));
1798         fc_exch_init(vn_port);
1799         fc_elsct_init(vn_port);
1800         fc_lport_init(vn_port);
1801         fc_disc_init(vn_port);
1802         fc_disc_config(vn_port, vn_port);
1803
1804
1805         /* Allocate the exchange manager */
1806         shost = vport_to_shost(vport);
1807         n_port = shost_priv(shost);
1808         fc_exch_mgr_list_clone(n_port, vn_port);
1809
1810         /* Set max frame size */
1811         fc_set_mfs(vn_port, QEDF_MFS);
1812
1813         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1814
1815         if (disabled) {
1816                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1817         } else {
1818                 vn_port->boot_time = jiffies;
1819                 fc_fabric_login(vn_port);
1820                 fc_vport_setlink(vn_port);
1821         }
1822
1823         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1824                    vn_port);
1825
1826         /* Set up debug context for vport */
1827         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1828         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1829
1830 err2:
1831         scsi_host_put(vn_port->host);
1832 err1:
1833         return rc;
1834 }
1835
1836 static int qedf_vport_destroy(struct fc_vport *vport)
1837 {
1838         struct Scsi_Host *shost = vport_to_shost(vport);
1839         struct fc_lport *n_port = shost_priv(shost);
1840         struct fc_lport *vn_port = vport->dd_data;
1841         struct qedf_ctx *qedf = lport_priv(vn_port);
1842
1843         if (!qedf) {
1844                 QEDF_ERR(NULL, "qedf is NULL.\n");
1845                 goto out;
1846         }
1847
1848         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1849         set_bit(QEDF_UNLOADING, &qedf->flags);
1850
1851         mutex_lock(&n_port->lp_mutex);
1852         list_del(&vn_port->list);
1853         mutex_unlock(&n_port->lp_mutex);
1854
1855         fc_fabric_logoff(vn_port);
1856         fc_lport_destroy(vn_port);
1857
1858         /* Detach from scsi-ml */
1859         fc_remove_host(vn_port->host);
1860         scsi_remove_host(vn_port->host);
1861
1862         /*
1863          * Only try to release the exchange manager if the vn_port
1864          * configuration is complete.
1865          */
1866         if (vn_port->state == LPORT_ST_READY)
1867                 fc_exch_mgr_free(vn_port);
1868
1869         /* Free memory used by statistical counters */
1870         fc_lport_free_stats(vn_port);
1871
1872         /* Release Scsi_Host */
1873         if (vn_port->host)
1874                 scsi_host_put(vn_port->host);
1875
1876 out:
1877         return 0;
1878 }
1879
1880 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1881 {
1882         struct fc_lport *lport = vport->dd_data;
1883
1884         if (disable) {
1885                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1886                 fc_fabric_logoff(lport);
1887         } else {
1888                 lport->boot_time = jiffies;
1889                 fc_fabric_login(lport);
1890                 fc_vport_setlink(lport);
1891         }
1892         return 0;
1893 }
1894
1895 /*
1896  * During removal we need to wait for all the vports associated with a port
1897  * to be destroyed so we avoid a race condition where libfc is still trying
1898  * to reap vports while the driver remove function has already reaped the
1899  * driver contexts associated with the physical port.
1900  */
1901 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1902 {
1903         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1904
1905         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1906             "Entered.\n");
1907         while (fc_host->npiv_vports_inuse > 0) {
1908                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1909                     "Waiting for all vports to be reaped.\n");
1910                 msleep(1000);
1911         }
1912 }
1913
1914 /**
1915  * qedf_fcoe_reset - Resets the fcoe
1916  *
1917  * @shost: shost the reset is from
1918  *
1919  * Returns: always 0
1920  */
1921 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1922 {
1923         struct fc_lport *lport = shost_priv(shost);
1924
1925         qedf_ctx_soft_reset(lport);
1926         return 0;
1927 }
1928
1929 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1930         *shost)
1931 {
1932         struct fc_host_statistics *qedf_stats;
1933         struct fc_lport *lport = shost_priv(shost);
1934         struct qedf_ctx *qedf = lport_priv(lport);
1935         struct qed_fcoe_stats *fw_fcoe_stats;
1936
1937         qedf_stats = fc_get_host_stats(shost);
1938
1939         /* We don't collect offload stats for specific NPIV ports */
1940         if (lport->vport)
1941                 goto out;
1942
1943         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1944         if (!fw_fcoe_stats) {
1945                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1946                     "fw_fcoe_stats.\n");
1947                 goto out;
1948         }
1949
1950         mutex_lock(&qedf->stats_mutex);
1951
1952         /* Query firmware for offload stats */
1953         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1954
1955         /*
1956          * The expectation is that we add our offload stats to the stats
1957          * being maintained by libfc each time the fc_get_host_status callback
1958          * is invoked. The additions are not carried over for each call to
1959          * the fc_get_host_stats callback.
1960          */
1961         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1962             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1963             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1964         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1965             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1966             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1967         qedf_stats->fcp_input_megabytes +=
1968             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1969         qedf_stats->fcp_output_megabytes +=
1970             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1971         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1972         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1973         qedf_stats->invalid_crc_count +=
1974             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1975         qedf_stats->dumped_frames =
1976             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1977         qedf_stats->error_frames +=
1978             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1979         qedf_stats->fcp_input_requests += qedf->input_requests;
1980         qedf_stats->fcp_output_requests += qedf->output_requests;
1981         qedf_stats->fcp_control_requests += qedf->control_requests;
1982         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1983         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1984
1985         mutex_unlock(&qedf->stats_mutex);
1986         kfree(fw_fcoe_stats);
1987 out:
1988         return qedf_stats;
1989 }
1990
1991 static struct fc_function_template qedf_fc_transport_fn = {
1992         .show_host_node_name = 1,
1993         .show_host_port_name = 1,
1994         .show_host_supported_classes = 1,
1995         .show_host_supported_fc4s = 1,
1996         .show_host_active_fc4s = 1,
1997         .show_host_maxframe_size = 1,
1998
1999         .show_host_port_id = 1,
2000         .show_host_supported_speeds = 1,
2001         .get_host_speed = fc_get_host_speed,
2002         .show_host_speed = 1,
2003         .show_host_port_type = 1,
2004         .get_host_port_state = fc_get_host_port_state,
2005         .show_host_port_state = 1,
2006         .show_host_symbolic_name = 1,
2007
2008         /*
2009          * Tell FC transport to allocate enough space to store the backpointer
2010          * for the associate qedf_rport struct.
2011          */
2012         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2013                                 sizeof(struct qedf_rport)),
2014         .show_rport_maxframe_size = 1,
2015         .show_rport_supported_classes = 1,
2016         .show_host_fabric_name = 1,
2017         .show_starget_node_name = 1,
2018         .show_starget_port_name = 1,
2019         .show_starget_port_id = 1,
2020         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2021         .show_rport_dev_loss_tmo = 1,
2022         .get_fc_host_stats = qedf_fc_get_host_stats,
2023         .issue_fc_host_lip = qedf_fcoe_reset,
2024         .vport_create = qedf_vport_create,
2025         .vport_delete = qedf_vport_destroy,
2026         .vport_disable = qedf_vport_disable,
2027         .bsg_request = fc_lport_bsg_request,
2028 };
2029
2030 static struct fc_function_template qedf_fc_vport_transport_fn = {
2031         .show_host_node_name = 1,
2032         .show_host_port_name = 1,
2033         .show_host_supported_classes = 1,
2034         .show_host_supported_fc4s = 1,
2035         .show_host_active_fc4s = 1,
2036         .show_host_maxframe_size = 1,
2037         .show_host_port_id = 1,
2038         .show_host_supported_speeds = 1,
2039         .get_host_speed = fc_get_host_speed,
2040         .show_host_speed = 1,
2041         .show_host_port_type = 1,
2042         .get_host_port_state = fc_get_host_port_state,
2043         .show_host_port_state = 1,
2044         .show_host_symbolic_name = 1,
2045         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2046                                 sizeof(struct qedf_rport)),
2047         .show_rport_maxframe_size = 1,
2048         .show_rport_supported_classes = 1,
2049         .show_host_fabric_name = 1,
2050         .show_starget_node_name = 1,
2051         .show_starget_port_name = 1,
2052         .show_starget_port_id = 1,
2053         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2054         .show_rport_dev_loss_tmo = 1,
2055         .get_fc_host_stats = fc_get_host_stats,
2056         .issue_fc_host_lip = qedf_fcoe_reset,
2057         .bsg_request = fc_lport_bsg_request,
2058 };
2059
2060 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2061 {
2062         struct qedf_ctx *qedf = fp->qedf;
2063         struct global_queue *que;
2064         struct qed_sb_info *sb_info = fp->sb_info;
2065         struct status_block_e4 *sb = sb_info->sb_virt;
2066         u16 prod_idx;
2067
2068         /* Get the pointer to the global CQ this completion is on */
2069         que = qedf->global_queues[fp->sb_id];
2070
2071         /* Be sure all responses have been written to PI */
2072         rmb();
2073
2074         /* Get the current firmware producer index */
2075         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2076
2077         return (que->cq_prod_idx != prod_idx);
2078 }
2079
2080 /*
2081  * Interrupt handler code.
2082  */
2083
2084 /* Process completion queue and copy CQE contents for deferred processesing
2085  *
2086  * Return true if we should wake the I/O thread, false if not.
2087  */
2088 static bool qedf_process_completions(struct qedf_fastpath *fp)
2089 {
2090         struct qedf_ctx *qedf = fp->qedf;
2091         struct qed_sb_info *sb_info = fp->sb_info;
2092         struct status_block_e4 *sb = sb_info->sb_virt;
2093         struct global_queue *que;
2094         u16 prod_idx;
2095         struct fcoe_cqe *cqe;
2096         struct qedf_io_work *io_work;
2097         int num_handled = 0;
2098         unsigned int cpu;
2099         struct qedf_ioreq *io_req = NULL;
2100         u16 xid;
2101         u16 new_cqes;
2102         u32 comp_type;
2103
2104         /* Get the current firmware producer index */
2105         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2106
2107         /* Get the pointer to the global CQ this completion is on */
2108         que = qedf->global_queues[fp->sb_id];
2109
2110         /* Calculate the amount of new elements since last processing */
2111         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2112             (prod_idx - que->cq_prod_idx) :
2113             0x10000 - que->cq_prod_idx + prod_idx;
2114
2115         /* Save producer index */
2116         que->cq_prod_idx = prod_idx;
2117
2118         while (new_cqes) {
2119                 fp->completions++;
2120                 num_handled++;
2121                 cqe = &que->cq[que->cq_cons_idx];
2122
2123                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2124                     FCOE_CQE_CQE_TYPE_MASK;
2125
2126                 /*
2127                  * Process unsolicited CQEs directly in the interrupt handler
2128                  * sine we need the fastpath ID
2129                  */
2130                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2131                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2132                            "Unsolicated CQE.\n");
2133                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2134                         /*
2135                          * Don't add a work list item.  Increment consumer
2136                          * consumer index and move on.
2137                          */
2138                         goto inc_idx;
2139                 }
2140
2141                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2142                 io_req = &qedf->cmd_mgr->cmds[xid];
2143
2144                 /*
2145                  * Figure out which percpu thread we should queue this I/O
2146                  * on.
2147                  */
2148                 if (!io_req)
2149                         /* If there is not io_req assocated with this CQE
2150                          * just queue it on CPU 0
2151                          */
2152                         cpu = 0;
2153                 else {
2154                         cpu = io_req->cpu;
2155                         io_req->int_cpu = smp_processor_id();
2156                 }
2157
2158                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2159                 if (!io_work) {
2160                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2161                                    "work for I/O completion.\n");
2162                         continue;
2163                 }
2164                 memset(io_work, 0, sizeof(struct qedf_io_work));
2165
2166                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2167
2168                 /* Copy contents of CQE for deferred processing */
2169                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2170
2171                 io_work->qedf = fp->qedf;
2172                 io_work->fp = NULL; /* Only used for unsolicited frames */
2173
2174                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2175
2176 inc_idx:
2177                 que->cq_cons_idx++;
2178                 if (que->cq_cons_idx == fp->cq_num_entries)
2179                         que->cq_cons_idx = 0;
2180                 new_cqes--;
2181         }
2182
2183         return true;
2184 }
2185
2186
2187 /* MSI-X fastpath handler code */
2188 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2189 {
2190         struct qedf_fastpath *fp = dev_id;
2191
2192         if (!fp) {
2193                 QEDF_ERR(NULL, "fp is null.\n");
2194                 return IRQ_HANDLED;
2195         }
2196         if (!fp->sb_info) {
2197                 QEDF_ERR(NULL, "fp->sb_info in null.");
2198                 return IRQ_HANDLED;
2199         }
2200
2201         /*
2202          * Disable interrupts for this status block while we process new
2203          * completions
2204          */
2205         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2206
2207         while (1) {
2208                 qedf_process_completions(fp);
2209
2210                 if (qedf_fp_has_work(fp) == 0) {
2211                         /* Update the sb information */
2212                         qed_sb_update_sb_idx(fp->sb_info);
2213
2214                         /* Check for more work */
2215                         rmb();
2216
2217                         if (qedf_fp_has_work(fp) == 0) {
2218                                 /* Re-enable interrupts */
2219                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2220                                 return IRQ_HANDLED;
2221                         }
2222                 }
2223         }
2224
2225         /* Do we ever want to break out of above loop? */
2226         return IRQ_HANDLED;
2227 }
2228
2229 /* simd handler for MSI/INTa */
2230 static void qedf_simd_int_handler(void *cookie)
2231 {
2232         /* Cookie is qedf_ctx struct */
2233         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2234
2235         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2236 }
2237
2238 #define QEDF_SIMD_HANDLER_NUM           0
2239 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2240 {
2241         int i;
2242         u16 vector_idx = 0;
2243         u32 vector;
2244
2245         if (qedf->int_info.msix_cnt) {
2246                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2247                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2248                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2249                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2250                                   "Freeing IRQ #%d vector_idx=%d.\n",
2251                                   i, vector_idx);
2252                         vector = qedf->int_info.msix[vector_idx].vector;
2253                         synchronize_irq(vector);
2254                         irq_set_affinity_hint(vector, NULL);
2255                         irq_set_affinity_notifier(vector, NULL);
2256                         free_irq(vector, &qedf->fp_array[i]);
2257                 }
2258         } else
2259                 qed_ops->common->simd_handler_clean(qedf->cdev,
2260                     QEDF_SIMD_HANDLER_NUM);
2261
2262         qedf->int_info.used_cnt = 0;
2263         qed_ops->common->set_fp_int(qedf->cdev, 0);
2264 }
2265
2266 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2267 {
2268         int i, rc, cpu;
2269         u16 vector_idx = 0;
2270         u32 vector;
2271
2272         cpu = cpumask_first(cpu_online_mask);
2273         for (i = 0; i < qedf->num_queues; i++) {
2274                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2275                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2276                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2277                           "Requesting IRQ #%d vector_idx=%d.\n",
2278                           i, vector_idx);
2279                 vector = qedf->int_info.msix[vector_idx].vector;
2280                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2281                                  &qedf->fp_array[i]);
2282
2283                 if (rc) {
2284                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2285                         qedf_sync_free_irqs(qedf);
2286                         return rc;
2287                 }
2288
2289                 qedf->int_info.used_cnt++;
2290                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2291                 cpu = cpumask_next(cpu, cpu_online_mask);
2292         }
2293
2294         return 0;
2295 }
2296
2297 static int qedf_setup_int(struct qedf_ctx *qedf)
2298 {
2299         int rc = 0;
2300
2301         /*
2302          * Learn interrupt configuration
2303          */
2304         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2305         if (rc <= 0)
2306                 return 0;
2307
2308         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2309         if (rc)
2310                 return 0;
2311
2312         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2313                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2314                    num_online_cpus());
2315
2316         if (qedf->int_info.msix_cnt)
2317                 return qedf_request_msix_irq(qedf);
2318
2319         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2320             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2321         qedf->int_info.used_cnt = 1;
2322
2323         QEDF_ERR(&qedf->dbg_ctx,
2324                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2325         return -EINVAL;
2326 }
2327
2328 /* Main function for libfc frame reception */
2329 static void qedf_recv_frame(struct qedf_ctx *qedf,
2330         struct sk_buff *skb)
2331 {
2332         u32 fr_len;
2333         struct fc_lport *lport;
2334         struct fc_frame_header *fh;
2335         struct fcoe_crc_eof crc_eof;
2336         struct fc_frame *fp;
2337         u8 *mac = NULL;
2338         u8 *dest_mac = NULL;
2339         struct fcoe_hdr *hp;
2340         struct qedf_rport *fcport;
2341         struct fc_lport *vn_port;
2342         u32 f_ctl;
2343
2344         lport = qedf->lport;
2345         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2346                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2347                 kfree_skb(skb);
2348                 return;
2349         }
2350
2351         if (skb_is_nonlinear(skb))
2352                 skb_linearize(skb);
2353         mac = eth_hdr(skb)->h_source;
2354         dest_mac = eth_hdr(skb)->h_dest;
2355
2356         /* Pull the header */
2357         hp = (struct fcoe_hdr *)skb->data;
2358         fh = (struct fc_frame_header *) skb_transport_header(skb);
2359         skb_pull(skb, sizeof(struct fcoe_hdr));
2360         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2361
2362         fp = (struct fc_frame *)skb;
2363         fc_frame_init(fp);
2364         fr_dev(fp) = lport;
2365         fr_sof(fp) = hp->fcoe_sof;
2366         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2367                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2368                 kfree_skb(skb);
2369                 return;
2370         }
2371         fr_eof(fp) = crc_eof.fcoe_eof;
2372         fr_crc(fp) = crc_eof.fcoe_crc32;
2373         if (pskb_trim(skb, fr_len)) {
2374                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2375                 kfree_skb(skb);
2376                 return;
2377         }
2378
2379         fh = fc_frame_header_get(fp);
2380
2381         /*
2382          * Invalid frame filters.
2383          */
2384
2385         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2386             fh->fh_type == FC_TYPE_FCP) {
2387                 /* Drop FCP data. We dont this in L2 path */
2388                 kfree_skb(skb);
2389                 return;
2390         }
2391         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2392             fh->fh_type == FC_TYPE_ELS) {
2393                 switch (fc_frame_payload_op(fp)) {
2394                 case ELS_LOGO:
2395                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2396                                 /* drop non-FIP LOGO */
2397                                 kfree_skb(skb);
2398                                 return;
2399                         }
2400                         break;
2401                 }
2402         }
2403
2404         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2405                 /* Drop incoming ABTS */
2406                 kfree_skb(skb);
2407                 return;
2408         }
2409
2410         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2411                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2412                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2413                 kfree_skb(skb);
2414                 return;
2415         }
2416
2417         if (qedf->ctlr.state) {
2418                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2419                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2420                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2421                             mac, qedf->ctlr.dest_addr);
2422                         kfree_skb(skb);
2423                         return;
2424                 }
2425         }
2426
2427         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2428
2429         /*
2430          * If the destination ID from the frame header does not match what we
2431          * have on record for lport and the search for a NPIV port came up
2432          * empty then this is not addressed to our port so simply drop it.
2433          */
2434         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2435                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2436                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2437                           lport->port_id, ntoh24(fh->fh_d_id));
2438                 kfree_skb(skb);
2439                 return;
2440         }
2441
2442         f_ctl = ntoh24(fh->fh_f_ctl);
2443         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2444             (f_ctl & FC_FC_EX_CTX)) {
2445                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2446                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2447                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2448                 kfree_skb(skb);
2449                 return;
2450         }
2451
2452         /*
2453          * If a connection is uploading, drop incoming FCoE frames as there
2454          * is a small window where we could try to return a frame while libfc
2455          * is trying to clean things up.
2456          */
2457
2458         /* Get fcport associated with d_id if it exists */
2459         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2460
2461         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2462             &fcport->flags)) {
2463                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2464                     "Connection uploading, dropping fp=%p.\n", fp);
2465                 kfree_skb(skb);
2466                 return;
2467         }
2468
2469         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2470             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2471             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2472             fh->fh_type);
2473         if (qedf_dump_frames)
2474                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2475                     1, skb->data, skb->len, false);
2476         fc_exch_recv(lport, fp);
2477 }
2478
2479 static void qedf_ll2_process_skb(struct work_struct *work)
2480 {
2481         struct qedf_skb_work *skb_work =
2482             container_of(work, struct qedf_skb_work, work);
2483         struct qedf_ctx *qedf = skb_work->qedf;
2484         struct sk_buff *skb = skb_work->skb;
2485         struct ethhdr *eh;
2486
2487         if (!qedf) {
2488                 QEDF_ERR(NULL, "qedf is NULL\n");
2489                 goto err_out;
2490         }
2491
2492         eh = (struct ethhdr *)skb->data;
2493
2494         /* Undo VLAN encapsulation */
2495         if (eh->h_proto == htons(ETH_P_8021Q)) {
2496                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2497                 eh = skb_pull(skb, VLAN_HLEN);
2498                 skb_reset_mac_header(skb);
2499         }
2500
2501         /*
2502          * Process either a FIP frame or FCoE frame based on the
2503          * protocol value.  If it's not either just drop the
2504          * frame.
2505          */
2506         if (eh->h_proto == htons(ETH_P_FIP)) {
2507                 qedf_fip_recv(qedf, skb);
2508                 goto out;
2509         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2510                 __skb_pull(skb, ETH_HLEN);
2511                 qedf_recv_frame(qedf, skb);
2512                 goto out;
2513         } else
2514                 goto err_out;
2515
2516 err_out:
2517         kfree_skb(skb);
2518 out:
2519         kfree(skb_work);
2520         return;
2521 }
2522
2523 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2524         u32 arg1, u32 arg2)
2525 {
2526         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2527         struct qedf_skb_work *skb_work;
2528
2529         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2530                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2531                           "Dropping frame as link state is down.\n");
2532                 kfree_skb(skb);
2533                 return 0;
2534         }
2535
2536         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2537         if (!skb_work) {
2538                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2539                            "dropping frame.\n");
2540                 kfree_skb(skb);
2541                 return 0;
2542         }
2543
2544         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2545         skb_work->skb = skb;
2546         skb_work->qedf = qedf;
2547         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2548
2549         return 0;
2550 }
2551
2552 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2553         .rx_cb = qedf_ll2_rx,
2554         .tx_cb = NULL,
2555 };
2556
2557 /* Main thread to process I/O completions */
2558 void qedf_fp_io_handler(struct work_struct *work)
2559 {
2560         struct qedf_io_work *io_work =
2561             container_of(work, struct qedf_io_work, work);
2562         u32 comp_type;
2563
2564         /*
2565          * Deferred part of unsolicited CQE sends
2566          * frame to libfc.
2567          */
2568         comp_type = (io_work->cqe.cqe_data >>
2569             FCOE_CQE_CQE_TYPE_SHIFT) &
2570             FCOE_CQE_CQE_TYPE_MASK;
2571         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2572             io_work->fp)
2573                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2574         else
2575                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2576
2577         kfree(io_work);
2578 }
2579
2580 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2581         struct qed_sb_info *sb_info, u16 sb_id)
2582 {
2583         struct status_block_e4 *sb_virt;
2584         dma_addr_t sb_phys;
2585         int ret;
2586
2587         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2588             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2589
2590         if (!sb_virt) {
2591                 QEDF_ERR(&qedf->dbg_ctx,
2592                          "Status block allocation failed for id = %d.\n",
2593                          sb_id);
2594                 return -ENOMEM;
2595         }
2596
2597         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2598             sb_id, QED_SB_TYPE_STORAGE);
2599
2600         if (ret) {
2601                 QEDF_ERR(&qedf->dbg_ctx,
2602                          "Status block initialization failed (0x%x) for id = %d.\n",
2603                          ret, sb_id);
2604                 return ret;
2605         }
2606
2607         return 0;
2608 }
2609
2610 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2611 {
2612         if (sb_info->sb_virt)
2613                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2614                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2615 }
2616
2617 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2618 {
2619         int id;
2620         struct qedf_fastpath *fp = NULL;
2621
2622         for (id = 0; id < qedf->num_queues; id++) {
2623                 fp = &(qedf->fp_array[id]);
2624                 if (fp->sb_id == QEDF_SB_ID_NULL)
2625                         break;
2626                 qedf_free_sb(qedf, fp->sb_info);
2627                 kfree(fp->sb_info);
2628         }
2629         kfree(qedf->fp_array);
2630 }
2631
2632 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2633 {
2634         int id;
2635         struct qedf_fastpath *fp;
2636         int ret;
2637
2638         qedf->fp_array =
2639             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2640                 GFP_KERNEL);
2641
2642         if (!qedf->fp_array) {
2643                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2644                           "failed.\n");
2645                 return -ENOMEM;
2646         }
2647
2648         for (id = 0; id < qedf->num_queues; id++) {
2649                 fp = &(qedf->fp_array[id]);
2650                 fp->sb_id = QEDF_SB_ID_NULL;
2651                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2652                 if (!fp->sb_info) {
2653                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2654                                   "allocation failed.\n");
2655                         goto err;
2656                 }
2657                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2658                 if (ret) {
2659                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2660                                   "initialization failed.\n");
2661                         goto err;
2662                 }
2663                 fp->sb_id = id;
2664                 fp->qedf = qedf;
2665                 fp->cq_num_entries =
2666                     qedf->global_queues[id]->cq_mem_size /
2667                     sizeof(struct fcoe_cqe);
2668         }
2669 err:
2670         return 0;
2671 }
2672
2673 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2674 {
2675         u16 xid;
2676         struct qedf_ioreq *io_req;
2677         struct qedf_rport *fcport;
2678         u32 comp_type;
2679
2680         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2681             FCOE_CQE_CQE_TYPE_MASK;
2682
2683         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2684         io_req = &qedf->cmd_mgr->cmds[xid];
2685
2686         /* Completion not for a valid I/O anymore so just return */
2687         if (!io_req) {
2688                 QEDF_ERR(&qedf->dbg_ctx,
2689                          "io_req is NULL for xid=0x%x.\n", xid);
2690                 return;
2691         }
2692
2693         fcport = io_req->fcport;
2694
2695         if (fcport == NULL) {
2696                 QEDF_ERR(&qedf->dbg_ctx,
2697                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2698                          xid, io_req);
2699                 return;
2700         }
2701
2702         /*
2703          * Check that fcport is offloaded.  If it isn't then the spinlock
2704          * isn't valid and shouldn't be taken. We should just return.
2705          */
2706         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2707                 QEDF_ERR(&qedf->dbg_ctx,
2708                          "Session not offloaded yet, fcport = %p.\n", fcport);
2709                 return;
2710         }
2711
2712
2713         switch (comp_type) {
2714         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2715                 atomic_inc(&fcport->free_sqes);
2716                 switch (io_req->cmd_type) {
2717                 case QEDF_SCSI_CMD:
2718                         qedf_scsi_completion(qedf, cqe, io_req);
2719                         break;
2720                 case QEDF_ELS:
2721                         qedf_process_els_compl(qedf, cqe, io_req);
2722                         break;
2723                 case QEDF_TASK_MGMT_CMD:
2724                         qedf_process_tmf_compl(qedf, cqe, io_req);
2725                         break;
2726                 case QEDF_SEQ_CLEANUP:
2727                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2728                         break;
2729                 }
2730                 break;
2731         case FCOE_ERROR_DETECTION_CQE_TYPE:
2732                 atomic_inc(&fcport->free_sqes);
2733                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2734                     "Error detect CQE.\n");
2735                 qedf_process_error_detect(qedf, cqe, io_req);
2736                 break;
2737         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2738                 atomic_inc(&fcport->free_sqes);
2739                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2740                     "Cleanup CQE.\n");
2741                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2742                 break;
2743         case FCOE_ABTS_CQE_TYPE:
2744                 atomic_inc(&fcport->free_sqes);
2745                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2746                     "Abort CQE.\n");
2747                 qedf_process_abts_compl(qedf, cqe, io_req);
2748                 break;
2749         case FCOE_DUMMY_CQE_TYPE:
2750                 atomic_inc(&fcport->free_sqes);
2751                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2752                     "Dummy CQE.\n");
2753                 break;
2754         case FCOE_LOCAL_COMP_CQE_TYPE:
2755                 atomic_inc(&fcport->free_sqes);
2756                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2757                     "Local completion CQE.\n");
2758                 break;
2759         case FCOE_WARNING_CQE_TYPE:
2760                 atomic_inc(&fcport->free_sqes);
2761                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2762                     "Warning CQE.\n");
2763                 qedf_process_warning_compl(qedf, cqe, io_req);
2764                 break;
2765         case MAX_FCOE_CQE_TYPE:
2766                 atomic_inc(&fcport->free_sqes);
2767                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2768                     "Max FCoE CQE.\n");
2769                 break;
2770         default:
2771                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2772                     "Default CQE.\n");
2773                 break;
2774         }
2775 }
2776
2777 static void qedf_free_bdq(struct qedf_ctx *qedf)
2778 {
2779         int i;
2780
2781         if (qedf->bdq_pbl_list)
2782                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2783                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2784
2785         if (qedf->bdq_pbl)
2786                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2787                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2788
2789         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2790                 if (qedf->bdq[i].buf_addr) {
2791                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2792                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2793                 }
2794         }
2795 }
2796
2797 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2798 {
2799         int i;
2800         struct global_queue **gl = qedf->global_queues;
2801
2802         for (i = 0; i < qedf->num_queues; i++) {
2803                 if (!gl[i])
2804                         continue;
2805
2806                 if (gl[i]->cq)
2807                         dma_free_coherent(&qedf->pdev->dev,
2808                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2809                 if (gl[i]->cq_pbl)
2810                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2811                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2812
2813                 kfree(gl[i]);
2814         }
2815
2816         qedf_free_bdq(qedf);
2817 }
2818
2819 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2820 {
2821         int i;
2822         struct scsi_bd *pbl;
2823         u64 *list;
2824         dma_addr_t page;
2825
2826         /* Alloc dma memory for BDQ buffers */
2827         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2828                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2829                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2830                 if (!qedf->bdq[i].buf_addr) {
2831                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2832                             "buffer %d.\n", i);
2833                         return -ENOMEM;
2834                 }
2835         }
2836
2837         /* Alloc dma memory for BDQ page buffer list */
2838         qedf->bdq_pbl_mem_size =
2839             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2840         qedf->bdq_pbl_mem_size =
2841             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2842
2843         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2844             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2845         if (!qedf->bdq_pbl) {
2846                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2847                 return -ENOMEM;
2848         }
2849
2850         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2851                   "BDQ PBL addr=0x%p dma=%pad\n",
2852                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2853
2854         /*
2855          * Populate BDQ PBL with physical and virtual address of individual
2856          * BDQ buffers
2857          */
2858         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2859         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2860                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2861                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2862                 pbl->opaque.fcoe_opaque.hi = 0;
2863                 /* Opaque lo data is an index into the BDQ array */
2864                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2865                 pbl++;
2866         }
2867
2868         /* Allocate list of PBL pages */
2869         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2870                                                 QEDF_PAGE_SIZE,
2871                                                 &qedf->bdq_pbl_list_dma,
2872                                                 GFP_KERNEL);
2873         if (!qedf->bdq_pbl_list) {
2874                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2875                 return -ENOMEM;
2876         }
2877
2878         /*
2879          * Now populate PBL list with pages that contain pointers to the
2880          * individual buffers.
2881          */
2882         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2883             QEDF_PAGE_SIZE;
2884         list = (u64 *)qedf->bdq_pbl_list;
2885         page = qedf->bdq_pbl_list_dma;
2886         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2887                 *list = qedf->bdq_pbl_dma;
2888                 list++;
2889                 page += QEDF_PAGE_SIZE;
2890         }
2891
2892         return 0;
2893 }
2894
2895 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2896 {
2897         u32 *list;
2898         int i;
2899         int status = 0, rc;
2900         u32 *pbl;
2901         dma_addr_t page;
2902         int num_pages;
2903
2904         /* Allocate and map CQs, RQs */
2905         /*
2906          * Number of global queues (CQ / RQ). This should
2907          * be <= number of available MSIX vectors for the PF
2908          */
2909         if (!qedf->num_queues) {
2910                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2911                 return 1;
2912         }
2913
2914         /*
2915          * Make sure we allocated the PBL that will contain the physical
2916          * addresses of our queues
2917          */
2918         if (!qedf->p_cpuq) {
2919                 status = 1;
2920                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
2921                 goto mem_alloc_failure;
2922         }
2923
2924         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2925             * qedf->num_queues), GFP_KERNEL);
2926         if (!qedf->global_queues) {
2927                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2928                           "queues array ptr memory\n");
2929                 return -ENOMEM;
2930         }
2931         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2932                    "qedf->global_queues=%p.\n", qedf->global_queues);
2933
2934         /* Allocate DMA coherent buffers for BDQ */
2935         rc = qedf_alloc_bdq(qedf);
2936         if (rc) {
2937                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
2938                 goto mem_alloc_failure;
2939         }
2940
2941         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2942         for (i = 0; i < qedf->num_queues; i++) {
2943                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2944                     GFP_KERNEL);
2945                 if (!qedf->global_queues[i]) {
2946                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2947                                    "global queue %d.\n", i);
2948                         status = -ENOMEM;
2949                         goto mem_alloc_failure;
2950                 }
2951
2952                 qedf->global_queues[i]->cq_mem_size =
2953                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2954                 qedf->global_queues[i]->cq_mem_size =
2955                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2956
2957                 qedf->global_queues[i]->cq_pbl_size =
2958                     (qedf->global_queues[i]->cq_mem_size /
2959                     PAGE_SIZE) * sizeof(void *);
2960                 qedf->global_queues[i]->cq_pbl_size =
2961                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2962
2963                 qedf->global_queues[i]->cq =
2964                     dma_alloc_coherent(&qedf->pdev->dev,
2965                                        qedf->global_queues[i]->cq_mem_size,
2966                                        &qedf->global_queues[i]->cq_dma,
2967                                        GFP_KERNEL);
2968
2969                 if (!qedf->global_queues[i]->cq) {
2970                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2971                         status = -ENOMEM;
2972                         goto mem_alloc_failure;
2973                 }
2974
2975                 qedf->global_queues[i]->cq_pbl =
2976                     dma_alloc_coherent(&qedf->pdev->dev,
2977                                        qedf->global_queues[i]->cq_pbl_size,
2978                                        &qedf->global_queues[i]->cq_pbl_dma,
2979                                        GFP_KERNEL);
2980
2981                 if (!qedf->global_queues[i]->cq_pbl) {
2982                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2983                         status = -ENOMEM;
2984                         goto mem_alloc_failure;
2985                 }
2986
2987                 /* Create PBL */
2988                 num_pages = qedf->global_queues[i]->cq_mem_size /
2989                     QEDF_PAGE_SIZE;
2990                 page = qedf->global_queues[i]->cq_dma;
2991                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2992
2993                 while (num_pages--) {
2994                         *pbl = U64_LO(page);
2995                         pbl++;
2996                         *pbl = U64_HI(page);
2997                         pbl++;
2998                         page += QEDF_PAGE_SIZE;
2999                 }
3000                 /* Set the initial consumer index for cq */
3001                 qedf->global_queues[i]->cq_cons_idx = 0;
3002         }
3003
3004         list = (u32 *)qedf->p_cpuq;
3005
3006         /*
3007          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3008          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3009          * to the physical address which contains an array of pointers to
3010          * the physical addresses of the specific queue pages.
3011          */
3012         for (i = 0; i < qedf->num_queues; i++) {
3013                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3014                 list++;
3015                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3016                 list++;
3017                 *list = U64_LO(0);
3018                 list++;
3019                 *list = U64_HI(0);
3020                 list++;
3021         }
3022
3023         return 0;
3024
3025 mem_alloc_failure:
3026         qedf_free_global_queues(qedf);
3027         return status;
3028 }
3029
3030 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3031 {
3032         u8 sq_num_pbl_pages;
3033         u32 sq_mem_size;
3034         u32 cq_mem_size;
3035         u32 cq_num_entries;
3036         int rval;
3037
3038         /*
3039          * The number of completion queues/fastpath interrupts/status blocks
3040          * we allocation is the minimum off:
3041          *
3042          * Number of CPUs
3043          * Number allocated by qed for our PCI function
3044          */
3045         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3046
3047         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3048                    qedf->num_queues);
3049
3050         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3051             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3052             &qedf->hw_p_cpuq, GFP_KERNEL);
3053
3054         if (!qedf->p_cpuq) {
3055                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3056                 return 1;
3057         }
3058
3059         rval = qedf_alloc_global_queues(qedf);
3060         if (rval) {
3061                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3062                           "failed.\n");
3063                 return 1;
3064         }
3065
3066         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3067         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3068         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3069         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3070
3071         /* Calculate CQ num entries */
3072         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3073         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3074         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3075
3076         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3077
3078         /* Setup the value for fcoe PF */
3079         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3080         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3081         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3082             (u64)qedf->hw_p_cpuq;
3083         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3084
3085         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3086
3087         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3088         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3089
3090         /* log_page_size: 12 for 4KB pages */
3091         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3092
3093         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3094         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3095         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3096
3097         /* BDQ address and size */
3098         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3099             qedf->bdq_pbl_list_dma;
3100         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3101             qedf->bdq_pbl_list_num_entries;
3102         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3103
3104         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3105             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3106             qedf->bdq_pbl_list,
3107             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3108             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3109
3110         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3111             "cq_num_entries=%d.\n",
3112             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3113
3114         return 0;
3115 }
3116
3117 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3118 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3119 {
3120         size_t size = 0;
3121
3122         if (qedf->p_cpuq) {
3123                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3124                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3125                     qedf->hw_p_cpuq);
3126         }
3127
3128         qedf_free_global_queues(qedf);
3129
3130         kfree(qedf->global_queues);
3131 }
3132
3133 /*
3134  * PCI driver functions
3135  */
3136
3137 static const struct pci_device_id qedf_pci_tbl[] = {
3138         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3139         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3140         {0}
3141 };
3142 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3143
3144 static struct pci_driver qedf_pci_driver = {
3145         .name = QEDF_MODULE_NAME,
3146         .id_table = qedf_pci_tbl,
3147         .probe = qedf_probe,
3148         .remove = qedf_remove,
3149         .shutdown = qedf_shutdown,
3150 };
3151
3152 static int __qedf_probe(struct pci_dev *pdev, int mode)
3153 {
3154         int rc = -EINVAL;
3155         struct fc_lport *lport;
3156         struct qedf_ctx *qedf;
3157         struct Scsi_Host *host;
3158         bool is_vf = false;
3159         struct qed_ll2_params params;
3160         char host_buf[20];
3161         struct qed_link_params link_params;
3162         int status;
3163         void *task_start, *task_end;
3164         struct qed_slowpath_params slowpath_params;
3165         struct qed_probe_params qed_params;
3166         u16 tmp;
3167
3168         /*
3169          * When doing error recovery we didn't reap the lport so don't try
3170          * to reallocate it.
3171          */
3172         if (mode != QEDF_MODE_RECOVERY) {
3173                 lport = libfc_host_alloc(&qedf_host_template,
3174                     sizeof(struct qedf_ctx));
3175
3176                 if (!lport) {
3177                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3178                         rc = -ENOMEM;
3179                         goto err0;
3180                 }
3181
3182                 fc_disc_init(lport);
3183
3184                 /* Initialize qedf_ctx */
3185                 qedf = lport_priv(lport);
3186                 qedf->lport = lport;
3187                 qedf->ctlr.lp = lport;
3188                 qedf->pdev = pdev;
3189                 qedf->dbg_ctx.pdev = pdev;
3190                 qedf->dbg_ctx.host_no = lport->host->host_no;
3191                 spin_lock_init(&qedf->hba_lock);
3192                 INIT_LIST_HEAD(&qedf->fcports);
3193                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3194                 atomic_set(&qedf->num_offloads, 0);
3195                 qedf->stop_io_on_error = false;
3196                 pci_set_drvdata(pdev, qedf);
3197                 init_completion(&qedf->fipvlan_compl);
3198                 mutex_init(&qedf->stats_mutex);
3199                 mutex_init(&qedf->flush_mutex);
3200
3201                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3202                    "QLogic FastLinQ FCoE Module qedf %s, "
3203                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3204                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3205                    FW_ENGINEERING_VERSION);
3206         } else {
3207                 /* Init pointers during recovery */
3208                 qedf = pci_get_drvdata(pdev);
3209                 lport = qedf->lport;
3210         }
3211
3212         host = lport->host;
3213
3214         /* Allocate mempool for qedf_io_work structs */
3215         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3216             qedf_io_work_cache);
3217         if (qedf->io_mempool == NULL) {
3218                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3219                 goto err1;
3220         }
3221         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3222             qedf->io_mempool);
3223
3224         sprintf(host_buf, "qedf_%u_link",
3225             qedf->lport->host->host_no);
3226         qedf->link_update_wq = create_workqueue(host_buf);
3227         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3228         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3229         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3230         qedf->fipvlan_retries = qedf_fipvlan_retries;
3231         /* Set a default prio in case DCBX doesn't converge */
3232         if (qedf_default_prio > -1) {
3233                 /*
3234                  * This is the case where we pass a modparam in so we want to
3235                  * honor it even if dcbx doesn't converge.
3236                  */
3237                 qedf->prio = qedf_default_prio;
3238         } else
3239                 qedf->prio = QEDF_DEFAULT_PRIO;
3240
3241         /*
3242          * Common probe. Takes care of basic hardware init and pci_*
3243          * functions.
3244          */
3245         memset(&qed_params, 0, sizeof(qed_params));
3246         qed_params.protocol = QED_PROTOCOL_FCOE;
3247         qed_params.dp_module = qedf_dp_module;
3248         qed_params.dp_level = qedf_dp_level;
3249         qed_params.is_vf = is_vf;
3250         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3251         if (!qedf->cdev) {
3252                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3253                 rc = -ENODEV;
3254                 goto err1;
3255         }
3256
3257         /* Learn information crucial for qedf to progress */
3258         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3259         if (rc) {
3260                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3261                 goto err1;
3262         }
3263
3264         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3265                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3266                   qedf->dev_info.common.num_hwfns,
3267                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3268
3269         /* queue allocation code should come here
3270          * order should be
3271          *      slowpath_start
3272          *      status block allocation
3273          *      interrupt registration (to get min number of queues)
3274          *      set_fcoe_pf_param
3275          *      qed_sp_fcoe_func_start
3276          */
3277         rc = qedf_set_fcoe_pf_param(qedf);
3278         if (rc) {
3279                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3280                 goto err2;
3281         }
3282         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3283
3284         /* Record BDQ producer doorbell addresses */
3285         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3286         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3287         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3288             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3289             qedf->bdq_secondary_prod);
3290
3291         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3292
3293         rc = qedf_prepare_sb(qedf);
3294         if (rc) {
3295
3296                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3297                 goto err2;
3298         }
3299
3300         /* Start the Slowpath-process */
3301         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3302         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3303         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3304         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3305         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3306         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3307         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3308         if (rc) {
3309                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3310                 goto err2;
3311         }
3312
3313         /*
3314          * update_pf_params needs to be called before and after slowpath
3315          * start
3316          */
3317         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3318
3319         /* Setup interrupts */
3320         rc = qedf_setup_int(qedf);
3321         if (rc) {
3322                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3323                 goto err3;
3324         }
3325
3326         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3327         if (rc) {
3328                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3329                 goto err4;
3330         }
3331         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3332         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3333         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3334                    "end=%p block_size=%u.\n", task_start, task_end,
3335                    qedf->tasks.size);
3336
3337         /*
3338          * We need to write the number of BDs in the BDQ we've preallocated so
3339          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3340          * packet arrives.
3341          */
3342         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3343         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3344             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3345             qedf->bdq_prod_idx);
3346         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3347         tmp = readw(qedf->bdq_primary_prod);
3348         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3349         tmp = readw(qedf->bdq_secondary_prod);
3350
3351         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3352
3353         /* Now that the dev_info struct has been filled in set the MAC
3354          * address
3355          */
3356         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3357         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3358                    qedf->mac);
3359
3360         /*
3361          * Set the WWNN and WWPN in the following way:
3362          *
3363          * If the info we get from qed is non-zero then use that to set the
3364          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3365          * on the MAC address.
3366          */
3367         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3368                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3369                     "Setting WWPN and WWNN from qed dev_info.\n");
3370                 qedf->wwnn = qedf->dev_info.wwnn;
3371                 qedf->wwpn = qedf->dev_info.wwpn;
3372         } else {
3373                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3374                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3375                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3376                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3377         }
3378         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3379                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3380
3381         sprintf(host_buf, "host_%d", host->host_no);
3382         qed_ops->common->set_name(qedf->cdev, host_buf);
3383
3384         /* Allocate cmd mgr */
3385         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3386         if (!qedf->cmd_mgr) {
3387                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3388                 rc = -ENOMEM;
3389                 goto err5;
3390         }
3391
3392         if (mode != QEDF_MODE_RECOVERY) {
3393                 host->transportt = qedf_fc_transport_template;
3394                 host->max_lun = qedf_max_lun;
3395                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3396                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3397                 rc = scsi_add_host(host, &pdev->dev);
3398                 if (rc) {
3399                         QEDF_WARN(&qedf->dbg_ctx,
3400                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3401                         goto err6;
3402                 }
3403         }
3404
3405         memset(&params, 0, sizeof(params));
3406         params.mtu = QEDF_LL2_BUF_SIZE;
3407         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3408
3409         /* Start LL2 processing thread */
3410         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3411         qedf->ll2_recv_wq =
3412                 create_workqueue(host_buf);
3413         if (!qedf->ll2_recv_wq) {
3414                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3415                 rc = -ENOMEM;
3416                 goto err7;
3417         }
3418
3419 #ifdef CONFIG_DEBUG_FS
3420         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3421                             qedf_dbg_fops);
3422 #endif
3423
3424         /* Start LL2 */
3425         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3426         rc = qed_ops->ll2->start(qedf->cdev, &params);
3427         if (rc) {
3428                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3429                 goto err7;
3430         }
3431         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3432
3433         /* Set initial FIP/FCoE VLAN to NULL */
3434         qedf->vlan_id = 0;
3435
3436         /*
3437          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3438          * they were not reaped during the unload process.
3439          */
3440         if (mode != QEDF_MODE_RECOVERY) {
3441                 /* Setup imbedded fcoe controller */
3442                 qedf_fcoe_ctlr_setup(qedf);
3443
3444                 /* Setup lport */
3445                 rc = qedf_lport_setup(qedf);
3446                 if (rc) {
3447                         QEDF_ERR(&(qedf->dbg_ctx),
3448                             "qedf_lport_setup failed.\n");
3449                         goto err7;
3450                 }
3451         }
3452
3453         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3454         qedf->timer_work_queue =
3455                 create_workqueue(host_buf);
3456         if (!qedf->timer_work_queue) {
3457                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3458                           "workqueue.\n");
3459                 rc = -ENOMEM;
3460                 goto err7;
3461         }
3462
3463         /* DPC workqueue is not reaped during recovery unload */
3464         if (mode != QEDF_MODE_RECOVERY) {
3465                 sprintf(host_buf, "qedf_%u_dpc",
3466                     qedf->lport->host->host_no);
3467                 qedf->dpc_wq = create_workqueue(host_buf);
3468         }
3469
3470         /*
3471          * GRC dump and sysfs parameters are not reaped during the recovery
3472          * unload process.
3473          */
3474         if (mode != QEDF_MODE_RECOVERY) {
3475                 qedf->grcdump_size =
3476                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3477                 if (qedf->grcdump_size) {
3478                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3479                             qedf->grcdump_size);
3480                         if (rc) {
3481                                 QEDF_ERR(&(qedf->dbg_ctx),
3482                                     "GRC Dump buffer alloc failed.\n");
3483                                 qedf->grcdump = NULL;
3484                         }
3485
3486                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3487                             "grcdump: addr=%p, size=%u.\n",
3488                             qedf->grcdump, qedf->grcdump_size);
3489                 }
3490                 qedf_create_sysfs_ctx_attr(qedf);
3491
3492                 /* Initialize I/O tracing for this adapter */
3493                 spin_lock_init(&qedf->io_trace_lock);
3494                 qedf->io_trace_idx = 0;
3495         }
3496
3497         init_completion(&qedf->flogi_compl);
3498
3499         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3500         if (status)
3501                 QEDF_ERR(&(qedf->dbg_ctx),
3502                         "Failed to send drv state to MFW.\n");
3503
3504         memset(&link_params, 0, sizeof(struct qed_link_params));
3505         link_params.link_up = true;
3506         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3507         if (status)
3508                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3509
3510         /* Start/restart discovery */
3511         if (mode == QEDF_MODE_RECOVERY)
3512                 fcoe_ctlr_link_up(&qedf->ctlr);
3513         else
3514                 fc_fabric_login(lport);
3515
3516         /* All good */
3517         return 0;
3518
3519 err7:
3520         if (qedf->ll2_recv_wq)
3521                 destroy_workqueue(qedf->ll2_recv_wq);
3522         fc_remove_host(qedf->lport->host);
3523         scsi_remove_host(qedf->lport->host);
3524 #ifdef CONFIG_DEBUG_FS
3525         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3526 #endif
3527 err6:
3528         qedf_cmd_mgr_free(qedf->cmd_mgr);
3529 err5:
3530         qed_ops->stop(qedf->cdev);
3531 err4:
3532         qedf_free_fcoe_pf_param(qedf);
3533         qedf_sync_free_irqs(qedf);
3534 err3:
3535         qed_ops->common->slowpath_stop(qedf->cdev);
3536 err2:
3537         qed_ops->common->remove(qedf->cdev);
3538 err1:
3539         scsi_host_put(lport->host);
3540 err0:
3541         return rc;
3542 }
3543
3544 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3545 {
3546         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3547 }
3548
3549 static void __qedf_remove(struct pci_dev *pdev, int mode)
3550 {
3551         struct qedf_ctx *qedf;
3552         int rc;
3553
3554         if (!pdev) {
3555                 QEDF_ERR(NULL, "pdev is NULL.\n");
3556                 return;
3557         }
3558
3559         qedf = pci_get_drvdata(pdev);
3560
3561         /*
3562          * Prevent race where we're in board disable work and then try to
3563          * rmmod the module.
3564          */
3565         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3566                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3567                 return;
3568         }
3569
3570         if (mode != QEDF_MODE_RECOVERY)
3571                 set_bit(QEDF_UNLOADING, &qedf->flags);
3572
3573         /* Logoff the fabric to upload all connections */
3574         if (mode == QEDF_MODE_RECOVERY)
3575                 fcoe_ctlr_link_down(&qedf->ctlr);
3576         else
3577                 fc_fabric_logoff(qedf->lport);
3578
3579         if (qedf_wait_for_upload(qedf) == false)
3580                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3581
3582 #ifdef CONFIG_DEBUG_FS
3583         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3584 #endif
3585
3586         /* Stop any link update handling */
3587         cancel_delayed_work_sync(&qedf->link_update);
3588         destroy_workqueue(qedf->link_update_wq);
3589         qedf->link_update_wq = NULL;
3590
3591         if (qedf->timer_work_queue)
3592                 destroy_workqueue(qedf->timer_work_queue);
3593
3594         /* Stop Light L2 */
3595         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3596         qed_ops->ll2->stop(qedf->cdev);
3597         if (qedf->ll2_recv_wq)
3598                 destroy_workqueue(qedf->ll2_recv_wq);
3599
3600         /* Stop fastpath */
3601         qedf_sync_free_irqs(qedf);
3602         qedf_destroy_sb(qedf);
3603
3604         /*
3605          * During recovery don't destroy OS constructs that represent the
3606          * physical port.
3607          */
3608         if (mode != QEDF_MODE_RECOVERY) {
3609                 qedf_free_grc_dump_buf(&qedf->grcdump);
3610                 qedf_remove_sysfs_ctx_attr(qedf);
3611
3612                 /* Remove all SCSI/libfc/libfcoe structures */
3613                 fcoe_ctlr_destroy(&qedf->ctlr);
3614                 fc_lport_destroy(qedf->lport);
3615                 fc_remove_host(qedf->lport->host);
3616                 scsi_remove_host(qedf->lport->host);
3617         }
3618
3619         qedf_cmd_mgr_free(qedf->cmd_mgr);
3620
3621         if (mode != QEDF_MODE_RECOVERY) {
3622                 fc_exch_mgr_free(qedf->lport);
3623                 fc_lport_free_stats(qedf->lport);
3624
3625                 /* Wait for all vports to be reaped */
3626                 qedf_wait_for_vport_destroy(qedf);
3627         }
3628
3629         /*
3630          * Now that all connections have been uploaded we can stop the
3631          * rest of the qed operations
3632          */
3633         qed_ops->stop(qedf->cdev);
3634
3635         if (mode != QEDF_MODE_RECOVERY) {
3636                 if (qedf->dpc_wq) {
3637                         /* Stop general DPC handling */
3638                         destroy_workqueue(qedf->dpc_wq);
3639                         qedf->dpc_wq = NULL;
3640                 }
3641         }
3642
3643         /* Final shutdown for the board */
3644         qedf_free_fcoe_pf_param(qedf);
3645         if (mode != QEDF_MODE_RECOVERY) {
3646                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3647                 pci_set_drvdata(pdev, NULL);
3648         }
3649
3650         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3651         if (rc)
3652                 QEDF_ERR(&(qedf->dbg_ctx),
3653                         "Failed to send drv state to MFW.\n");
3654
3655         qed_ops->common->slowpath_stop(qedf->cdev);
3656         qed_ops->common->remove(qedf->cdev);
3657
3658         mempool_destroy(qedf->io_mempool);
3659
3660         /* Only reap the Scsi_host on a real removal */
3661         if (mode != QEDF_MODE_RECOVERY)
3662                 scsi_host_put(qedf->lport->host);
3663 }
3664
3665 static void qedf_remove(struct pci_dev *pdev)
3666 {
3667         /* Check to make sure this function wasn't already disabled */
3668         if (!atomic_read(&pdev->enable_cnt))
3669                 return;
3670
3671         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3672 }
3673
3674 void qedf_wq_grcdump(struct work_struct *work)
3675 {
3676         struct qedf_ctx *qedf =
3677             container_of(work, struct qedf_ctx, grcdump_work.work);
3678
3679         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3680         qedf_capture_grc_dump(qedf);
3681 }
3682
3683 /*
3684  * Protocol TLV handler
3685  */
3686 void qedf_get_protocol_tlv_data(void *dev, void *data)
3687 {
3688         struct qedf_ctx *qedf = dev;
3689         struct qed_mfw_tlv_fcoe *fcoe = data;
3690         struct fc_lport *lport = qedf->lport;
3691         struct Scsi_Host *host = lport->host;
3692         struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3693         struct fc_host_statistics *hst;
3694
3695         /* Force a refresh of the fc_host stats including offload stats */
3696         hst = qedf_fc_get_host_stats(host);
3697
3698         fcoe->qos_pri_set = true;
3699         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3700
3701         fcoe->ra_tov_set = true;
3702         fcoe->ra_tov = lport->r_a_tov;
3703
3704         fcoe->ed_tov_set = true;
3705         fcoe->ed_tov = lport->e_d_tov;
3706
3707         fcoe->npiv_state_set = true;
3708         fcoe->npiv_state = 1; /* NPIV always enabled */
3709
3710         fcoe->num_npiv_ids_set = true;
3711         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3712
3713         /* Certain attributes we only want to set if we've selected an FCF */
3714         if (qedf->ctlr.sel_fcf) {
3715                 fcoe->switch_name_set = true;
3716                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3717         }
3718
3719         fcoe->port_state_set = true;
3720         /* For qedf we're either link down or fabric attach */
3721         if (lport->link_up)
3722                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3723         else
3724                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3725
3726         fcoe->link_failures_set = true;
3727         fcoe->link_failures = (u16)hst->link_failure_count;
3728
3729         fcoe->fcoe_txq_depth_set = true;
3730         fcoe->fcoe_rxq_depth_set = true;
3731         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3732         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3733
3734         fcoe->fcoe_rx_frames_set = true;
3735         fcoe->fcoe_rx_frames = hst->rx_frames;
3736
3737         fcoe->fcoe_tx_frames_set = true;
3738         fcoe->fcoe_tx_frames = hst->tx_frames;
3739
3740         fcoe->fcoe_rx_bytes_set = true;
3741         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3742
3743         fcoe->fcoe_tx_bytes_set = true;
3744         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3745
3746         fcoe->crc_count_set = true;
3747         fcoe->crc_count = hst->invalid_crc_count;
3748
3749         fcoe->tx_abts_set = true;
3750         fcoe->tx_abts = hst->fcp_packet_aborts;
3751
3752         fcoe->tx_lun_rst_set = true;
3753         fcoe->tx_lun_rst = qedf->lun_resets;
3754
3755         fcoe->abort_task_sets_set = true;
3756         fcoe->abort_task_sets = qedf->packet_aborts;
3757
3758         fcoe->scsi_busy_set = true;
3759         fcoe->scsi_busy = qedf->busy;
3760
3761         fcoe->scsi_tsk_full_set = true;
3762         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3763 }
3764
3765 static void qedf_shutdown(struct pci_dev *pdev)
3766 {
3767         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3768 }
3769
3770 /* Generic TLV data callback */
3771 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3772 {
3773         struct qedf_ctx *qedf;
3774
3775         if (!dev) {
3776                 QEDF_INFO(NULL, QEDF_LOG_EVT,
3777                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
3778                 return;
3779         }
3780         qedf = (struct qedf_ctx *)dev;
3781
3782         memset(data, 0, sizeof(struct qed_generic_tlvs));
3783         ether_addr_copy(data->mac[0], qedf->mac);
3784 }
3785
3786 /*
3787  * Module Init/Remove
3788  */
3789
3790 static int __init qedf_init(void)
3791 {
3792         int ret;
3793
3794         /* If debug=1 passed, set the default log mask */
3795         if (qedf_debug == QEDF_LOG_DEFAULT)
3796                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3797
3798         /*
3799          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3800          * value has been set
3801          */
3802         if (qedf_default_prio > -1)
3803                 if (qedf_default_prio > 7) {
3804                         qedf_default_prio = QEDF_DEFAULT_PRIO;
3805                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3806                             QEDF_DEFAULT_PRIO);
3807                 }
3808
3809         /* Print driver banner */
3810         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3811                    QEDF_VERSION);
3812
3813         /* Create kmem_cache for qedf_io_work structs */
3814         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3815             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3816         if (qedf_io_work_cache == NULL) {
3817                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3818                 goto err1;
3819         }
3820         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3821             qedf_io_work_cache);
3822
3823         qed_ops = qed_get_fcoe_ops();
3824         if (!qed_ops) {
3825                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3826                 goto err1;
3827         }
3828
3829 #ifdef CONFIG_DEBUG_FS
3830         qedf_dbg_init("qedf");
3831 #endif
3832
3833         qedf_fc_transport_template =
3834             fc_attach_transport(&qedf_fc_transport_fn);
3835         if (!qedf_fc_transport_template) {
3836                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3837                 goto err2;
3838         }
3839
3840         qedf_fc_vport_transport_template =
3841                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3842         if (!qedf_fc_vport_transport_template) {
3843                 QEDF_ERR(NULL, "Could not register vport template with FC "
3844                           "transport\n");
3845                 goto err3;
3846         }
3847
3848         qedf_io_wq = create_workqueue("qedf_io_wq");
3849         if (!qedf_io_wq) {
3850                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3851                 goto err4;
3852         }
3853
3854         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3855
3856         ret = pci_register_driver(&qedf_pci_driver);
3857         if (ret) {
3858                 QEDF_ERR(NULL, "Failed to register driver\n");
3859                 goto err5;
3860         }
3861
3862         return 0;
3863
3864 err5:
3865         destroy_workqueue(qedf_io_wq);
3866 err4:
3867         fc_release_transport(qedf_fc_vport_transport_template);
3868 err3:
3869         fc_release_transport(qedf_fc_transport_template);
3870 err2:
3871 #ifdef CONFIG_DEBUG_FS
3872         qedf_dbg_exit();
3873 #endif
3874         qed_put_fcoe_ops();
3875 err1:
3876         return -EINVAL;
3877 }
3878
3879 static void __exit qedf_cleanup(void)
3880 {
3881         pci_unregister_driver(&qedf_pci_driver);
3882
3883         destroy_workqueue(qedf_io_wq);
3884
3885         fc_release_transport(qedf_fc_vport_transport_template);
3886         fc_release_transport(qedf_fc_transport_template);
3887 #ifdef CONFIG_DEBUG_FS
3888         qedf_dbg_exit();
3889 #endif
3890         qed_put_fcoe_ops();
3891
3892         kmem_cache_destroy(qedf_io_work_cache);
3893 }
3894
3895 MODULE_LICENSE("GPL");
3896 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
3897 MODULE_AUTHOR("QLogic Corporation");
3898 MODULE_VERSION(QEDF_VERSION);
3899 module_init(qedf_init);
3900 module_exit(qedf_cleanup);