drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9 #include "qla_target.h"
  10
  11 #include <linux/moduleparam.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15
  16 #include <scsi/scsi_tcq.h>
  17 #include <scsi/scsicam.h>
  18 #include <linux/delay.h>
  19
  20 void
  21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  22 {
  23         if (vha->vp_idx && vha->timer_active) {
  24                 del_timer_sync(&vha->timer);
  25                 vha->timer_active = 0;
  26         }
  27 }
  28
  29 static uint32_t
  30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  31 {
  32         uint32_t vp_id;
  33         struct qla_hw_data *ha = vha->hw;
  34         unsigned long flags;
  35
  36         /* Find an empty slot and assign an vp_id */
  37         mutex_lock(&ha->vport_lock);
  38         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  39         if (vp_id > ha->max_npiv_vports) {
  40                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  41                     "vp_id %d is bigger than max-supported %d.\n",
  42                     vp_id, ha->max_npiv_vports);
  43                 mutex_unlock(&ha->vport_lock);
  44                 return vp_id;
  45         }
  46
  47         set_bit(vp_id, ha->vp_idx_map);
  48         ha->num_vhosts++;
  49         vha->vp_idx = vp_id;
  50
  51         spin_lock_irqsave(&ha->vport_slock, flags);
  52         list_add_tail(&vha->list, &ha->vp_list);
  53
  54         qlt_update_vp_map(vha, SET_VP_IDX);
  55
  56         spin_unlock_irqrestore(&ha->vport_slock, flags);
  57
  58         mutex_unlock(&ha->vport_lock);
  59         return vp_id;
  60 }
  61
  62 void
  63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  64 {
  65         uint16_t vp_id;
  66         struct qla_hw_data *ha = vha->hw;
  67         unsigned long flags = 0;
  68
  69         mutex_lock(&ha->vport_lock);
  70         /*
  71          * Wait for all pending activities to finish before removing vport from
  72          * the list.
  73          * Lock needs to be held for safe removal from the list (it
  74          * ensures no active vp_list traversal while the vport is removed
  75          * from the queue)
  76          */
  77         wait_event_timeout(vha->vref_waitq, !atomic_read(&vha->vref_count),
  78             10*HZ);
  79
  80         spin_lock_irqsave(&ha->vport_slock, flags);
  81         if (atomic_read(&vha->vref_count)) {
  82                 ql_dbg(ql_dbg_vport, vha, 0xfffa,
  83                     "vha->vref_count=%u timeout\n", vha->vref_count.counter);
  84                 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
  85         }
  86         list_del(&vha->list);
  87         qlt_update_vp_map(vha, RESET_VP_IDX);
  88         spin_unlock_irqrestore(&ha->vport_slock, flags);
  89
  90         vp_id = vha->vp_idx;
  91         ha->num_vhosts--;
  92         clear_bit(vp_id, ha->vp_idx_map);
  93
  94         mutex_unlock(&ha->vport_lock);
  95 }
  96
  97 static scsi_qla_host_t *
  98 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  99 {
 100         scsi_qla_host_t *vha;
 101         struct scsi_qla_host *tvha;
 102         unsigned long flags;
 103
 104         spin_lock_irqsave(&ha->vport_slock, flags);
 105         /* Locate matching device in database. */
 106         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 107                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 108                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 109                         return vha;
 110                 }
 111         }
 112         spin_unlock_irqrestore(&ha->vport_slock, flags);
 113         return NULL;
 114 }
 115
 116 /*
 117  * qla2x00_mark_vp_devices_dead
 118  *      Updates fcport state when device goes offline.
 119  *
 120  * Input:
 121  *      ha = adapter block pointer.
 122  *      fcport = port structure pointer.
 123  *
 124  * Return:
 125  *      None.
 126  *
 127  * Context:
 128  */
 129 static void
 130 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 131 {
 132         /*
 133          * !!! NOTE !!!
 134          * This function, if called in contexts other than vp create, disable
 135          * or delete, please make sure this is synchronized with the
 136          * delete thread.
 137          */
 138         fc_port_t *fcport;
 139
 140         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 141                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 142                     "Marking port dead, loop_id=0x%04x : %x.\n",
 143                     fcport->loop_id, fcport->vha->vp_idx);
 144
 145                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 146                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 147         }
 148 }
 149
 150 int
 151 qla24xx_disable_vp(scsi_qla_host_t *vha)
 152 {
 153         unsigned long flags;
 154         int ret;
 155
 156         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 157         atomic_set(&vha->loop_state, LOOP_DOWN);
 158         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 159
 160         /* Remove port id from vp target map */
 161         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 162         qlt_update_vp_map(vha, RESET_AL_PA);
 163         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 164
 165         qla2x00_mark_vp_devices_dead(vha);
 166         atomic_set(&vha->vp_state, VP_FAILED);
 167         vha->flags.management_server_logged_in = 0;
 168         if (ret == QLA_SUCCESS) {
 169                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 170         } else {
 171                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 172                 return -1;
 173         }
 174         return 0;
 175 }
 176
 177 int
 178 qla24xx_enable_vp(scsi_qla_host_t *vha)
 179 {
 180         int ret;
 181         struct qla_hw_data *ha = vha->hw;
 182         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 183
 184         /* Check if physical ha port is Up */
 185         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 186                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 187                 !(ha->current_topology & ISP_CFG_F)) {
 188                 vha->vp_err_state =  VP_ERR_PORTDWN;
 189                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 190                 ql_dbg(ql_dbg_taskm, vha, 0x800b,
 191                     "%s skip enable. loop_state %x topo %x\n",
 192                     __func__, base_vha->loop_state.counter,
 193                     ha->current_topology);
 194
 195                 goto enable_failed;
 196         }
 197
 198         /* Initialize the new vport unless it is a persistent port */
 199         mutex_lock(&ha->vport_lock);
 200         ret = qla24xx_modify_vp_config(vha);
 201         mutex_unlock(&ha->vport_lock);
 202
 203         if (ret != QLA_SUCCESS) {
 204                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 205                 goto enable_failed;
 206         }
 207
 208         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 209             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 210         return 0;
 211
 212 enable_failed:
 213         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 214             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 215         return 1;
 216 }
 217
 218 static void
 219 qla24xx_configure_vp(scsi_qla_host_t *vha)
 220 {
 221         struct fc_vport *fc_vport;
 222         int ret;
 223
 224         fc_vport = vha->fc_vport;
 225
 226         ql_dbg(ql_dbg_vport, vha, 0xa002,
 227             "%s: change request #3.\n", __func__);
 228         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 229         if (ret != QLA_SUCCESS) {
 230                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 231                     "receiving of RSCN requests: 0x%x.\n", ret);
 232                 return;
 233         } else {
 234                 /* Corresponds to SCR enabled */
 235                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 236         }
 237
 238         vha->flags.online = 1;
 239         if (qla24xx_configure_vhba(vha))
 240                 return;
 241
 242         atomic_set(&vha->vp_state, VP_ACTIVE);
 243         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 244 }
 245
 246 void
 247 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 248 {
 249         scsi_qla_host_t *vha;
 250         struct qla_hw_data *ha = rsp->hw;
 251         int i = 0;
 252         unsigned long flags;
 253
 254         spin_lock_irqsave(&ha->vport_slock, flags);
 255         list_for_each_entry(vha, &ha->vp_list, list) {
 256                 if (vha->vp_idx) {
 257                         atomic_inc(&vha->vref_count);
 258                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 259
 260                         switch (mb[0]) {
 261                         case MBA_LIP_OCCURRED:
 262                         case MBA_LOOP_UP:
 263                         case MBA_LOOP_DOWN:
 264                         case MBA_LIP_RESET:
 265                         case MBA_POINT_TO_POINT:
 266                         case MBA_CHG_IN_CONNECTION:
 267                         case MBA_PORT_UPDATE:
 268                         case MBA_RSCN_UPDATE:
 269                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 270                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 271                                     i, *mb, vha);
 272                                 qla2x00_async_event(vha, rsp, mb);
 273                                 break;
 274                         }
 275
 276                         spin_lock_irqsave(&ha->vport_slock, flags);
 277                         atomic_dec(&vha->vref_count);
 278                         wake_up(&vha->vref_waitq);
 279                 }
 280                 i++;
 281         }
 282         spin_unlock_irqrestore(&ha->vport_slock, flags);
 283 }
 284
 285 int
 286 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 287 {
 288         /*
 289          * Physical port will do most of the abort and recovery work. We can
 290          * just treat it as a loop down
 291          */
 292         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 293                 atomic_set(&vha->loop_state, LOOP_DOWN);
 294                 qla2x00_mark_all_devices_lost(vha, 0);
 295         } else {
 296                 if (!atomic_read(&vha->loop_down_timer))
 297                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 298         }
 299
 300         /*
 301          * To exclusively reset vport, we need to log it out first.  Note: this
 302          * control_vp can fail if ISP reset is already issued, this is
 303          * expected, as the vp would be already logged out due to ISP reset.
 304          */
 305         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 306                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 307
 308         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 309             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 310         return qla24xx_enable_vp(vha);
 311 }
 312
 313 static int
 314 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 315 {
 316         struct qla_hw_data *ha = vha->hw;
 317         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 318
 319         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 320             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 321
 322         qla2x00_do_work(vha);
 323
 324         /* Check if Fw is ready to configure VP first */
 325         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 326                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 327                         /* VP acquired. complete port configuration */
 328                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 329                             "Configure VP scheduled.\n");
 330                         qla24xx_configure_vp(vha);
 331                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 332                             "Configure VP end.\n");
 333                         return 0;
 334                 }
 335         }
 336
 337         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 338                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 339                     "FCPort update scheduled.\n");
 340                 qla2x00_update_fcports(vha);
 341                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 342                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 343                     "FCPort update end.\n");
 344         }
 345
 346         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 347                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 348                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 349
 350                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 351                     "Relogin needed scheduled.\n");
 352                 qla2x00_relogin(vha);
 353                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 354                     "Relogin needed end.\n");
 355         }
 356
 357         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 358             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 359                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 360         }
 361
 362         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 363                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 364                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 365                             "Loop resync scheduled.\n");
 366                         qla2x00_loop_resync(vha);
 367                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 368                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 369                             "Loop resync end.\n");
 370                 }
 371         }
 372
 373         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 374             "Exiting %s.\n", __func__);
 375         return 0;
 376 }
 377
 378 void
 379 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 380 {
 381         struct qla_hw_data *ha = vha->hw;
 382         scsi_qla_host_t *vp;
 383         unsigned long flags = 0;
 384
 385         if (vha->vp_idx)
 386                 return;
 387         if (list_empty(&ha->vp_list))
 388                 return;
 389
 390         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 391
 392         if (!(ha->current_topology & ISP_CFG_F))
 393                 return;
 394
 395         spin_lock_irqsave(&ha->vport_slock, flags);
 396         list_for_each_entry(vp, &ha->vp_list, list) {
 397                 if (vp->vp_idx) {
 398                         atomic_inc(&vp->vref_count);
 399                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 400
 401                         qla2x00_do_dpc_vp(vp);
 402
 403                         spin_lock_irqsave(&ha->vport_slock, flags);
 404                         atomic_dec(&vp->vref_count);
 405                 }
 406         }
 407         spin_unlock_irqrestore(&ha->vport_slock, flags);
 408 }
 409
 410 int
 411 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 412 {
 413         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 414         struct qla_hw_data *ha = base_vha->hw;
 415         scsi_qla_host_t *vha;
 416         uint8_t port_name[WWN_SIZE];
 417
 418         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 419                 return VPCERR_UNSUPPORTED;
 420
 421         /* Check up the F/W and H/W support NPIV */
 422         if (!ha->flags.npiv_supported)
 423                 return VPCERR_UNSUPPORTED;
 424
 425         /* Check up whether npiv supported switch presented */
 426         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 427                 return VPCERR_NO_FABRIC_SUPP;
 428
 429         /* Check up unique WWPN */
 430         u64_to_wwn(fc_vport->port_name, port_name);
 431         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 432                 return VPCERR_BAD_WWN;
 433         vha = qla24xx_find_vhost_by_name(ha, port_name);
 434         if (vha)
 435                 return VPCERR_BAD_WWN;
 436
 437         /* Check up max-npiv-supports */
 438         if (ha->num_vhosts > ha->max_npiv_vports) {
 439                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 440                     "num_vhosts %ud is bigger "
 441                     "than max_npiv_vports %ud.\n",
 442                     ha->num_vhosts, ha->max_npiv_vports);
 443                 return VPCERR_UNSUPPORTED;
 444         }
 445         return 0;
 446 }
 447
 448 scsi_qla_host_t *
 449 qla24xx_create_vhost(struct fc_vport *fc_vport)
 450 {
 451         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 452         struct qla_hw_data *ha = base_vha->hw;
 453         scsi_qla_host_t *vha;
 454         struct scsi_host_template *sht = &qla2xxx_driver_template;
 455         struct Scsi_Host *host;
 456
 457         vha = qla2x00_create_host(sht, ha);
 458         if (!vha) {
 459                 ql_log(ql_log_warn, vha, 0xa005,
 460                     "scsi_host_alloc() failed for vport.\n");
 461                 return(NULL);
 462         }
 463
 464         host = vha->host;
 465         fc_vport->dd_data = vha;
 466         /* New host info */
 467         u64_to_wwn(fc_vport->node_name, vha->node_name);
 468         u64_to_wwn(fc_vport->port_name, vha->port_name);
 469
 470         vha->fc_vport = fc_vport;
 471         vha->device_flags = 0;
 472         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 473         if (vha->vp_idx > ha->max_npiv_vports) {
 474                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 475                     "Couldn't allocate vp_id.\n");
 476                 goto create_vhost_failed;
 477         }
 478         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 479
 480         vha->dpc_flags = 0L;
 481
 482         /*
 483          * To fix the issue of processing a parent's RSCN for the vport before
 484          * its SCR is complete.
 485          */
 486         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 487         atomic_set(&vha->loop_state, LOOP_DOWN);
 488         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 489
 490         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 491
 492         vha->req = base_vha->req;
 493         host->can_queue = base_vha->req->length + 128;
 494         host->cmd_per_lun = 3;
 495         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 496                 host->max_cmd_len = 32;
 497         else
 498                 host->max_cmd_len = MAX_CMDSZ;
 499         host->max_channel = MAX_BUSES - 1;
 500         host->max_lun = ql2xmaxlun;
 501         host->unique_id = host->host_no;
 502         host->max_id = ha->max_fibre_devices;
 503         host->transportt = qla2xxx_transport_vport_template;
 504
 505         ql_dbg(ql_dbg_vport, vha, 0xa007,
 506             "Detect vport hba %ld at address = %p.\n",
 507             vha->host_no, vha);
 508
 509         vha->flags.init_done = 1;
 510
 511         mutex_lock(&ha->vport_lock);
 512         set_bit(vha->vp_idx, ha->vp_idx_map);
 513         ha->cur_vport_count++;
 514         mutex_unlock(&ha->vport_lock);
 515
 516         return vha;
 517
 518 create_vhost_failed:
 519         return NULL;
 520 }
 521
 522 static void
 523 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 524 {
 525         struct qla_hw_data *ha = vha->hw;
 526         uint16_t que_id = req->id;
 527
 528         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 529                 sizeof(request_t), req->ring, req->dma);
 530         req->ring = NULL;
 531         req->dma = 0;
 532         if (que_id) {
 533                 ha->req_q_map[que_id] = NULL;
 534                 mutex_lock(&ha->vport_lock);
 535                 clear_bit(que_id, ha->req_qid_map);
 536                 mutex_unlock(&ha->vport_lock);
 537         }
 538         kfree(req->outstanding_cmds);
 539         kfree(req);
 540         req = NULL;
 541 }
 542
 543 static void
 544 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 545 {
 546         struct qla_hw_data *ha = vha->hw;
 547         uint16_t que_id = rsp->id;
 548
 549         if (rsp->msix && rsp->msix->have_irq) {
 550                 free_irq(rsp->msix->vector, rsp->msix->handle);
 551                 rsp->msix->have_irq = 0;
 552                 rsp->msix->in_use = 0;
 553                 rsp->msix->handle = NULL;
 554         }
 555         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 556                 sizeof(response_t), rsp->ring, rsp->dma);
 557         rsp->ring = NULL;
 558         rsp->dma = 0;
 559         if (que_id) {
 560                 ha->rsp_q_map[que_id] = NULL;
 561                 mutex_lock(&ha->vport_lock);
 562                 clear_bit(que_id, ha->rsp_qid_map);
 563                 mutex_unlock(&ha->vport_lock);
 564         }
 565         kfree(rsp);
 566         rsp = NULL;
 567 }
 568
 569 int
 570 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 571 {
 572         int ret = -1;
 573
 574         if (req) {
 575                 req->options |= BIT_0;
 576                 ret = qla25xx_init_req_que(vha, req);
 577         }
 578         if (ret == QLA_SUCCESS)
 579                 qla25xx_free_req_que(vha, req);
 580
 581         return ret;
 582 }
 583
 584 int
 585 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 586 {
 587         int ret = -1;
 588
 589         if (rsp) {
 590                 rsp->options |= BIT_0;
 591                 ret = qla25xx_init_rsp_que(vha, rsp);
 592         }
 593         if (ret == QLA_SUCCESS)
 594                 qla25xx_free_rsp_que(vha, rsp);
 595
 596         return ret;
 597 }
 598
 599 /* Delete all queues for a given vhost */
 600 int
 601 qla25xx_delete_queues(struct scsi_qla_host *vha)
 602 {
 603         int cnt, ret = 0;
 604         struct req_que *req = NULL;
 605         struct rsp_que *rsp = NULL;
 606         struct qla_hw_data *ha = vha->hw;
 607         struct qla_qpair *qpair, *tqpair;
 608
 609         if (ql2xmqsupport) {
 610                 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
 611                     qp_list_elem)
 612                         qla2xxx_delete_qpair(vha, qpair);
 613         } else {
 614                 /* Delete request queues */
 615                 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 616                         req = ha->req_q_map[cnt];
 617                         if (req && test_bit(cnt, ha->req_qid_map)) {
 618                                 ret = qla25xx_delete_req_que(vha, req);
 619                                 if (ret != QLA_SUCCESS) {
 620                                         ql_log(ql_log_warn, vha, 0x00ea,
 621                                             "Couldn't delete req que %d.\n",
 622                                             req->id);
 623                                         return ret;
 624                                 }
 625                         }
 626                 }
 627
 628                 /* Delete response queues */
 629                 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 630                         rsp = ha->rsp_q_map[cnt];
 631                         if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
 632                                 ret = qla25xx_delete_rsp_que(vha, rsp);
 633                                 if (ret != QLA_SUCCESS) {
 634                                         ql_log(ql_log_warn, vha, 0x00eb,
 635                                             "Couldn't delete rsp que %d.\n",
 636                                             rsp->id);
 637                                         return ret;
 638                                 }
 639                         }
 640                 }
 641         }
 642
 643         return ret;
 644 }
 645
 646 int
 647 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 648     uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos, bool startqp)
 649 {
 650         int ret = 0;
 651         struct req_que *req = NULL;
 652         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 653         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 654         uint16_t que_id = 0;
 655         device_reg_t *reg;
 656         uint32_t cnt;
 657
 658         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 659         if (req == NULL) {
 660                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 661                     "Failed to allocate memory for request queue.\n");
 662                 goto failed;
 663         }
 664
 665         req->length = REQUEST_ENTRY_CNT_24XX;
 666         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 667                         (req->length + 1) * sizeof(request_t),
 668                         &req->dma, GFP_KERNEL);
 669         if (req->ring == NULL) {
 670                 ql_log(ql_log_fatal, base_vha, 0x00da,
 671                     "Failed to allocate memory for request_ring.\n");
 672                 goto que_failed;
 673         }
 674
 675         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 676         if (ret != QLA_SUCCESS)
 677                 goto que_failed;
 678
 679         mutex_lock(&ha->mq_lock);
 680         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 681         if (que_id >= ha->max_req_queues) {
 682                 mutex_unlock(&ha->mq_lock);
 683                 ql_log(ql_log_warn, base_vha, 0x00db,
 684                     "No resources to create additional request queue.\n");
 685                 goto que_failed;
 686         }
 687         set_bit(que_id, ha->req_qid_map);
 688         ha->req_q_map[que_id] = req;
 689         req->rid = rid;
 690         req->vp_idx = vp_idx;
 691         req->qos = qos;
 692
 693         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 694             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 695             que_id, req->rid, req->vp_idx, req->qos);
 696         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 697             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 698             que_id, req->rid, req->vp_idx, req->qos);
 699         if (rsp_que < 0)
 700                 req->rsp = NULL;
 701         else
 702                 req->rsp = ha->rsp_q_map[rsp_que];
 703         /* Use alternate PCI bus number */
 704         if (MSB(req->rid))
 705                 options |= BIT_4;
 706         /* Use alternate PCI devfn */
 707         if (LSB(req->rid))
 708                 options |= BIT_5;
 709         req->options = options;
 710
 711         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 712             "options=0x%x.\n", req->options);
 713         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 714             "options=0x%x.\n", req->options);
 715         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 716                 req->outstanding_cmds[cnt] = NULL;
 717         req->current_outstanding_cmd = 1;
 718
 719         req->ring_ptr = req->ring;
 720         req->ring_index = 0;
 721         req->cnt = req->length;
 722         req->id = que_id;
 723         reg = ISP_QUE_REG(ha, que_id);
 724         req->req_q_in = &reg->isp25mq.req_q_in;
 725         req->req_q_out = &reg->isp25mq.req_q_out;
 726         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 727         req->out_ptr = (void *)(req->ring + req->length);
 728         mutex_unlock(&ha->mq_lock);
 729         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 730             "ring_ptr=%p ring_index=%d, "
 731             "cnt=%d id=%d max_q_depth=%d.\n",
 732             req->ring_ptr, req->ring_index,
 733             req->cnt, req->id, req->max_q_depth);
 734         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 735             "ring_ptr=%p ring_index=%d, "
 736             "cnt=%d id=%d max_q_depth=%d.\n",
 737             req->ring_ptr, req->ring_index, req->cnt,
 738             req->id, req->max_q_depth);
 739
 740         if (startqp) {
 741                 ret = qla25xx_init_req_que(base_vha, req);
 742                 if (ret != QLA_SUCCESS) {
 743                         ql_log(ql_log_fatal, base_vha, 0x00df,
 744                             "%s failed.\n", __func__);
 745                         mutex_lock(&ha->mq_lock);
 746                         clear_bit(que_id, ha->req_qid_map);
 747                         mutex_unlock(&ha->mq_lock);
 748                         goto que_failed;
 749                 }
 750                 vha->flags.qpairs_req_created = 1;
 751         }
 752
 753         return req->id;
 754
 755 que_failed:
 756         qla25xx_free_req_que(base_vha, req);
 757 failed:
 758         return 0;
 759 }
 760
 761 static void qla_do_work(struct work_struct *work)
 762 {
 763         unsigned long flags;
 764         struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
 765         struct scsi_qla_host *vha;
 766         struct qla_hw_data *ha = qpair->hw;
 767         struct srb_iocb *nvme, *nxt_nvme;
 768
 769         spin_lock_irqsave(&qpair->qp_lock, flags);
 770         vha = pci_get_drvdata(ha->pdev);
 771         qla24xx_process_response_queue(vha, qpair->rsp);
 772         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 773
 774         list_for_each_entry_safe(nvme, nxt_nvme, &qpair->nvme_done_list,
 775                     u.nvme.entry) {
 776                 list_del_init(&nvme->u.nvme.entry);
 777                 qla_nvme_cmpl_io(nvme);
 778         }
 779 }
 780
 781 /* create response queue */
 782 int
 783 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 784     uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair, bool startqp)
 785 {
 786         int ret = 0;
 787         struct rsp_que *rsp = NULL;
 788         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 789         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 790         uint16_t que_id = 0;
 791         device_reg_t *reg;
 792
 793         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 794         if (rsp == NULL) {
 795                 ql_log(ql_log_warn, base_vha, 0x0066,
 796                     "Failed to allocate memory for response queue.\n");
 797                 goto failed;
 798         }
 799
 800         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 801         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 802                         (rsp->length + 1) * sizeof(response_t),
 803                         &rsp->dma, GFP_KERNEL);
 804         if (rsp->ring == NULL) {
 805                 ql_log(ql_log_warn, base_vha, 0x00e1,
 806                     "Failed to allocate memory for response ring.\n");
 807                 goto que_failed;
 808         }
 809
 810         mutex_lock(&ha->mq_lock);
 811         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 812         if (que_id >= ha->max_rsp_queues) {
 813                 mutex_unlock(&ha->mq_lock);
 814                 ql_log(ql_log_warn, base_vha, 0x00e2,
 815                     "No resources to create additional request queue.\n");
 816                 goto que_failed;
 817         }
 818         set_bit(que_id, ha->rsp_qid_map);
 819
 820         rsp->msix = qpair->msix;
 821
 822         ha->rsp_q_map[que_id] = rsp;
 823         rsp->rid = rid;
 824         rsp->vp_idx = vp_idx;
 825         rsp->hw = ha;
 826         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 827             "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 828             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 829         /* Use alternate PCI bus number */
 830         if (MSB(rsp->rid))
 831                 options |= BIT_4;
 832         /* Use alternate PCI devfn */
 833         if (LSB(rsp->rid))
 834                 options |= BIT_5;
 835         /* Enable MSIX handshake mode on for uncapable adapters */
 836         if (!IS_MSIX_NACK_CAPABLE(ha))
 837                 options |= BIT_6;
 838
 839         /* Set option to indicate response queue creation */
 840         options |= BIT_1;
 841
 842         rsp->options = options;
 843         rsp->id = que_id;
 844         reg = ISP_QUE_REG(ha, que_id);
 845         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 846         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 847         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 848         mutex_unlock(&ha->mq_lock);
 849         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 850             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 851             rsp->options, rsp->id, rsp->rsp_q_in,
 852             rsp->rsp_q_out);
 853         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 854             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 855             rsp->options, rsp->id, rsp->rsp_q_in,
 856             rsp->rsp_q_out);
 857
 858         ret = qla25xx_request_irq(ha, qpair, qpair->msix,
 859             QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
 860         if (ret)
 861                 goto que_failed;
 862
 863         if (startqp) {
 864                 ret = qla25xx_init_rsp_que(base_vha, rsp);
 865                 if (ret != QLA_SUCCESS) {
 866                         ql_log(ql_log_fatal, base_vha, 0x00e7,
 867                             "%s failed.\n", __func__);
 868                         mutex_lock(&ha->mq_lock);
 869                         clear_bit(que_id, ha->rsp_qid_map);
 870                         mutex_unlock(&ha->mq_lock);
 871                         goto que_failed;
 872                 }
 873                 vha->flags.qpairs_rsp_created = 1;
 874         }
 875         rsp->req = NULL;
 876
 877         qla2x00_init_response_q_entries(rsp);
 878         if (qpair->hw->wq)
 879                 INIT_WORK(&qpair->q_work, qla_do_work);
 880         return rsp->id;
 881
 882 que_failed:
 883         qla25xx_free_rsp_que(base_vha, rsp);
 884 failed:
 885         return 0;
 886 }