kernel/drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9 #include "qla_target.h"
  10
  11 #include <linux/moduleparam.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15
  16 #include <scsi/scsi_tcq.h>
  17 #include <scsi/scsicam.h>
  18 #include <linux/delay.h>
  19
  20 void
  21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  22 {
  23         if (vha->vp_idx && vha->timer_active) {
  24                 del_timer_sync(&vha->timer);
  25                 vha->timer_active = 0;
  26         }
  27 }
  28
  29 static uint32_t
  30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  31 {
  32         uint32_t vp_id;
  33         struct qla_hw_data *ha = vha->hw;
  34         unsigned long flags;
  35
  36         /* Find an empty slot and assign an vp_id */
  37         mutex_lock(&ha->vport_lock);
  38         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  39         if (vp_id > ha->max_npiv_vports) {
  40                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  41                     "vp_id %d is bigger than max-supported %d.\n",
  42                     vp_id, ha->max_npiv_vports);
  43                 mutex_unlock(&ha->vport_lock);
  44                 return vp_id;
  45         }
  46
  47         set_bit(vp_id, ha->vp_idx_map);
  48         ha->num_vhosts++;
  49         vha->vp_idx = vp_id;
  50
  51         spin_lock_irqsave(&ha->vport_slock, flags);
  52         list_add_tail(&vha->list, &ha->vp_list);
  53
  54         qlt_update_vp_map(vha, SET_VP_IDX);
  55
  56         spin_unlock_irqrestore(&ha->vport_slock, flags);
  57
  58         mutex_unlock(&ha->vport_lock);
  59         return vp_id;
  60 }
  61
  62 void
  63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  64 {
  65         uint16_t vp_id;
  66         struct qla_hw_data *ha = vha->hw;
  67         unsigned long flags = 0;
  68
  69         mutex_lock(&ha->vport_lock);
  70         /*
  71          * Wait for all pending activities to finish before removing vport from
  72          * the list.
  73          * Lock needs to be held for safe removal from the list (it
  74          * ensures no active vp_list traversal while the vport is removed
  75          * from the queue)
  76          */
  77         spin_lock_irqsave(&ha->vport_slock, flags);
  78         while (atomic_read(&vha->vref_count)) {
  79                 spin_unlock_irqrestore(&ha->vport_slock, flags);
  80
  81                 msleep(500);
  82
  83                 spin_lock_irqsave(&ha->vport_slock, flags);
  84         }
  85         list_del(&vha->list);
  86         qlt_update_vp_map(vha, RESET_VP_IDX);
  87         spin_unlock_irqrestore(&ha->vport_slock, flags);
  88
  89         vp_id = vha->vp_idx;
  90         ha->num_vhosts--;
  91         clear_bit(vp_id, ha->vp_idx_map);
  92
  93         mutex_unlock(&ha->vport_lock);
  94 }
  95
  96 static scsi_qla_host_t *
  97 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  98 {
  99         scsi_qla_host_t *vha;
 100         struct scsi_qla_host *tvha;
 101         unsigned long flags;
 102
 103         spin_lock_irqsave(&ha->vport_slock, flags);
 104         /* Locate matching device in database. */
 105         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 106                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 107                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 108                         return vha;
 109                 }
 110         }
 111         spin_unlock_irqrestore(&ha->vport_slock, flags);
 112         return NULL;
 113 }
 114
 115 /*
 116  * qla2x00_mark_vp_devices_dead
 117  *      Updates fcport state when device goes offline.
 118  *
 119  * Input:
 120  *      ha = adapter block pointer.
 121  *      fcport = port structure pointer.
 122  *
 123  * Return:
 124  *      None.
 125  *
 126  * Context:
 127  */
 128 static void
 129 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 130 {
 131         /*
 132          * !!! NOTE !!!
 133          * This function, if called in contexts other than vp create, disable
 134          * or delete, please make sure this is synchronized with the
 135          * delete thread.
 136          */
 137         fc_port_t *fcport;
 138
 139         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 140                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 141                     "Marking port dead, loop_id=0x%04x : %x.\n",
 142                     fcport->loop_id, fcport->vha->vp_idx);
 143
 144                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 145                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 146         }
 147 }
 148
 149 int
 150 qla24xx_disable_vp(scsi_qla_host_t *vha)
 151 {
 152         unsigned long flags;
 153         int ret;
 154
 155         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 156         atomic_set(&vha->loop_state, LOOP_DOWN);
 157         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 158
 159         /* Remove port id from vp target map */
 160         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 161         qlt_update_vp_map(vha, RESET_AL_PA);
 162         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 163
 164         qla2x00_mark_vp_devices_dead(vha);
 165         atomic_set(&vha->vp_state, VP_FAILED);
 166         vha->flags.management_server_logged_in = 0;
 167         if (ret == QLA_SUCCESS) {
 168                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 169         } else {
 170                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 171                 return -1;
 172         }
 173         return 0;
 174 }
 175
 176 int
 177 qla24xx_enable_vp(scsi_qla_host_t *vha)
 178 {
 179         int ret;
 180         struct qla_hw_data *ha = vha->hw;
 181         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 182
 183         /* Check if physical ha port is Up */
 184         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 185                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 186                 !(ha->current_topology & ISP_CFG_F)) {
 187                 vha->vp_err_state =  VP_ERR_PORTDWN;
 188                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 189                 goto enable_failed;
 190         }
 191
 192         /* Initialize the new vport unless it is a persistent port */
 193         mutex_lock(&ha->vport_lock);
 194         ret = qla24xx_modify_vp_config(vha);
 195         mutex_unlock(&ha->vport_lock);
 196
 197         if (ret != QLA_SUCCESS) {
 198                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 199                 goto enable_failed;
 200         }
 201
 202         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 203             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 204         return 0;
 205
 206 enable_failed:
 207         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 208             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 209         return 1;
 210 }
 211
 212 static void
 213 qla24xx_configure_vp(scsi_qla_host_t *vha)
 214 {
 215         struct fc_vport *fc_vport;
 216         int ret;
 217
 218         fc_vport = vha->fc_vport;
 219
 220         ql_dbg(ql_dbg_vport, vha, 0xa002,
 221             "%s: change request #3.\n", __func__);
 222         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 223         if (ret != QLA_SUCCESS) {
 224                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 225                     "receiving of RSCN requests: 0x%x.\n", ret);
 226                 return;
 227         } else {
 228                 /* Corresponds to SCR enabled */
 229                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 230         }
 231
 232         vha->flags.online = 1;
 233         if (qla24xx_configure_vhba(vha))
 234                 return;
 235
 236         atomic_set(&vha->vp_state, VP_ACTIVE);
 237         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 238 }
 239
 240 void
 241 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 242 {
 243         scsi_qla_host_t *vha;
 244         struct qla_hw_data *ha = rsp->hw;
 245         int i = 0;
 246         unsigned long flags;
 247
 248         spin_lock_irqsave(&ha->vport_slock, flags);
 249         list_for_each_entry(vha, &ha->vp_list, list) {
 250                 if (vha->vp_idx) {
 251                         atomic_inc(&vha->vref_count);
 252                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 253
 254                         switch (mb[0]) {
 255                         case MBA_LIP_OCCURRED:
 256                         case MBA_LOOP_UP:
 257                         case MBA_LOOP_DOWN:
 258                         case MBA_LIP_RESET:
 259                         case MBA_POINT_TO_POINT:
 260                         case MBA_CHG_IN_CONNECTION:
 261                         case MBA_PORT_UPDATE:
 262                         case MBA_RSCN_UPDATE:
 263                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 264                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 265                                     i, *mb, vha);
 266                                 qla2x00_async_event(vha, rsp, mb);
 267                                 break;
 268                         }
 269
 270                         spin_lock_irqsave(&ha->vport_slock, flags);
 271                         atomic_dec(&vha->vref_count);
 272                 }
 273                 i++;
 274         }
 275         spin_unlock_irqrestore(&ha->vport_slock, flags);
 276 }
 277
 278 int
 279 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 280 {
 281         /*
 282          * Physical port will do most of the abort and recovery work. We can
 283          * just treat it as a loop down
 284          */
 285         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 286                 atomic_set(&vha->loop_state, LOOP_DOWN);
 287                 qla2x00_mark_all_devices_lost(vha, 0);
 288         } else {
 289                 if (!atomic_read(&vha->loop_down_timer))
 290                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 291         }
 292
 293         /*
 294          * To exclusively reset vport, we need to log it out first.  Note: this
 295          * control_vp can fail if ISP reset is already issued, this is
 296          * expected, as the vp would be already logged out due to ISP reset.
 297          */
 298         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 299                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 300
 301         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 302             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 303         return qla24xx_enable_vp(vha);
 304 }
 305
 306 static int
 307 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 308 {
 309         struct qla_hw_data *ha = vha->hw;
 310         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 311
 312         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 313             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 314
 315         qla2x00_do_work(vha);
 316
 317         /* Check if Fw is ready to configure VP first */
 318         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 319                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 320                         /* VP acquired. complete port configuration */
 321                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 322                             "Configure VP scheduled.\n");
 323                         qla24xx_configure_vp(vha);
 324                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 325                             "Configure VP end.\n");
 326                         return 0;
 327                 }
 328         }
 329
 330         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 331                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 332                     "FCPort update scheduled.\n");
 333                 qla2x00_update_fcports(vha);
 334                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 335                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 336                     "FCPort update end.\n");
 337         }
 338
 339         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 340                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 341                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 342
 343                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 344                     "Relogin needed scheduled.\n");
 345                 qla2x00_relogin(vha);
 346                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 347                     "Relogin needed end.\n");
 348         }
 349
 350         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 351             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 352                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 353         }
 354
 355         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 356                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 357                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 358                             "Loop resync scheduled.\n");
 359                         qla2x00_loop_resync(vha);
 360                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 361                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 362                             "Loop resync end.\n");
 363                 }
 364         }
 365
 366         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 367             "Exiting %s.\n", __func__);
 368         return 0;
 369 }
 370
 371 void
 372 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 373 {
 374         int ret;
 375         struct qla_hw_data *ha = vha->hw;
 376         scsi_qla_host_t *vp;
 377         unsigned long flags = 0;
 378
 379         if (vha->vp_idx)
 380                 return;
 381         if (list_empty(&ha->vp_list))
 382                 return;
 383
 384         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 385
 386         if (!(ha->current_topology & ISP_CFG_F))
 387                 return;
 388
 389         spin_lock_irqsave(&ha->vport_slock, flags);
 390         list_for_each_entry(vp, &ha->vp_list, list) {
 391                 if (vp->vp_idx) {
 392                         atomic_inc(&vp->vref_count);
 393                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 394
 395                         ret = qla2x00_do_dpc_vp(vp);
 396
 397                         spin_lock_irqsave(&ha->vport_slock, flags);
 398                         atomic_dec(&vp->vref_count);
 399                 }
 400         }
 401         spin_unlock_irqrestore(&ha->vport_slock, flags);
 402 }
 403
 404 int
 405 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 406 {
 407         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 408         struct qla_hw_data *ha = base_vha->hw;
 409         scsi_qla_host_t *vha;
 410         uint8_t port_name[WWN_SIZE];
 411
 412         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 413                 return VPCERR_UNSUPPORTED;
 414
 415         /* Check up the F/W and H/W support NPIV */
 416         if (!ha->flags.npiv_supported)
 417                 return VPCERR_UNSUPPORTED;
 418
 419         /* Check up whether npiv supported switch presented */
 420         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 421                 return VPCERR_NO_FABRIC_SUPP;
 422
 423         /* Check up unique WWPN */
 424         u64_to_wwn(fc_vport->port_name, port_name);
 425         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 426                 return VPCERR_BAD_WWN;
 427         vha = qla24xx_find_vhost_by_name(ha, port_name);
 428         if (vha)
 429                 return VPCERR_BAD_WWN;
 430
 431         /* Check up max-npiv-supports */
 432         if (ha->num_vhosts > ha->max_npiv_vports) {
 433                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 434                     "num_vhosts %ud is bigger "
 435                     "than max_npiv_vports %ud.\n",
 436                     ha->num_vhosts, ha->max_npiv_vports);
 437                 return VPCERR_UNSUPPORTED;
 438         }
 439         return 0;
 440 }
 441
 442 scsi_qla_host_t *
 443 qla24xx_create_vhost(struct fc_vport *fc_vport)
 444 {
 445         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 446         struct qla_hw_data *ha = base_vha->hw;
 447         scsi_qla_host_t *vha;
 448         struct scsi_host_template *sht = &qla2xxx_driver_template;
 449         struct Scsi_Host *host;
 450
 451         vha = qla2x00_create_host(sht, ha);
 452         if (!vha) {
 453                 ql_log(ql_log_warn, vha, 0xa005,
 454                     "scsi_host_alloc() failed for vport.\n");
 455                 return(NULL);
 456         }
 457
 458         host = vha->host;
 459         fc_vport->dd_data = vha;
 460         /* New host info */
 461         u64_to_wwn(fc_vport->node_name, vha->node_name);
 462         u64_to_wwn(fc_vport->port_name, vha->port_name);
 463
 464         vha->fc_vport = fc_vport;
 465         vha->device_flags = 0;
 466         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 467         if (vha->vp_idx > ha->max_npiv_vports) {
 468                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 469                     "Couldn't allocate vp_id.\n");
 470                 goto create_vhost_failed;
 471         }
 472         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 473
 474         vha->dpc_flags = 0L;
 475
 476         /*
 477          * To fix the issue of processing a parent's RSCN for the vport before
 478          * its SCR is complete.
 479          */
 480         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 481         atomic_set(&vha->loop_state, LOOP_DOWN);
 482         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 483
 484         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 485
 486         vha->req = base_vha->req;
 487         host->can_queue = base_vha->req->length + 128;
 488         host->cmd_per_lun = 3;
 489         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 490                 host->max_cmd_len = 32;
 491         else
 492                 host->max_cmd_len = MAX_CMDSZ;
 493         host->max_channel = MAX_BUSES - 1;
 494         host->max_lun = ql2xmaxlun;
 495         host->unique_id = host->host_no;
 496         host->max_id = ha->max_fibre_devices;
 497         host->transportt = qla2xxx_transport_vport_template;
 498
 499         ql_dbg(ql_dbg_vport, vha, 0xa007,
 500             "Detect vport hba %ld at address = %p.\n",
 501             vha->host_no, vha);
 502
 503         vha->flags.init_done = 1;
 504
 505         mutex_lock(&ha->vport_lock);
 506         set_bit(vha->vp_idx, ha->vp_idx_map);
 507         ha->cur_vport_count++;
 508         mutex_unlock(&ha->vport_lock);
 509
 510         return vha;
 511
 512 create_vhost_failed:
 513         return NULL;
 514 }
 515
 516 static void
 517 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 518 {
 519         struct qla_hw_data *ha = vha->hw;
 520         uint16_t que_id = req->id;
 521
 522         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 523                 sizeof(request_t), req->ring, req->dma);
 524         req->ring = NULL;
 525         req->dma = 0;
 526         if (que_id) {
 527                 ha->req_q_map[que_id] = NULL;
 528                 mutex_lock(&ha->vport_lock);
 529                 clear_bit(que_id, ha->req_qid_map);
 530                 mutex_unlock(&ha->vport_lock);
 531         }
 532         kfree(req->outstanding_cmds);
 533         kfree(req);
 534         req = NULL;
 535 }
 536
 537 static void
 538 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 539 {
 540         struct qla_hw_data *ha = vha->hw;
 541         uint16_t que_id = rsp->id;
 542
 543         if (rsp->msix && rsp->msix->have_irq) {
 544                 free_irq(rsp->msix->vector, rsp);
 545                 rsp->msix->have_irq = 0;
 546                 rsp->msix->rsp = NULL;
 547         }
 548         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 549                 sizeof(response_t), rsp->ring, rsp->dma);
 550         rsp->ring = NULL;
 551         rsp->dma = 0;
 552         if (que_id) {
 553                 ha->rsp_q_map[que_id] = NULL;
 554                 mutex_lock(&ha->vport_lock);
 555                 clear_bit(que_id, ha->rsp_qid_map);
 556                 mutex_unlock(&ha->vport_lock);
 557         }
 558         kfree(rsp);
 559         rsp = NULL;
 560 }
 561
 562 int
 563 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 564 {
 565         int ret = -1;
 566
 567         if (req) {
 568                 req->options |= BIT_0;
 569                 ret = qla25xx_init_req_que(vha, req);
 570         }
 571         if (ret == QLA_SUCCESS)
 572                 qla25xx_free_req_que(vha, req);
 573
 574         return ret;
 575 }
 576
 577 static int
 578 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 579 {
 580         int ret = -1;
 581
 582         if (rsp) {
 583                 rsp->options |= BIT_0;
 584                 ret = qla25xx_init_rsp_que(vha, rsp);
 585         }
 586         if (ret == QLA_SUCCESS)
 587                 qla25xx_free_rsp_que(vha, rsp);
 588
 589         return ret;
 590 }
 591
 592 /* Delete all queues for a given vhost */
 593 int
 594 qla25xx_delete_queues(struct scsi_qla_host *vha)
 595 {
 596         int cnt, ret = 0;
 597         struct req_que *req = NULL;
 598         struct rsp_que *rsp = NULL;
 599         struct qla_hw_data *ha = vha->hw;
 600
 601         /* Delete request queues */
 602         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 603                 req = ha->req_q_map[cnt];
 604                 if (req) {
 605                         ret = qla25xx_delete_req_que(vha, req);
 606                         if (ret != QLA_SUCCESS) {
 607                                 ql_log(ql_log_warn, vha, 0x00ea,
 608                                     "Couldn't delete req que %d.\n",
 609                                     req->id);
 610                                 return ret;
 611                         }
 612                 }
 613         }
 614
 615         /* Delete response queues */
 616         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 617                 rsp = ha->rsp_q_map[cnt];
 618                 if (rsp) {
 619                         ret = qla25xx_delete_rsp_que(vha, rsp);
 620                         if (ret != QLA_SUCCESS) {
 621                                 ql_log(ql_log_warn, vha, 0x00eb,
 622                                     "Couldn't delete rsp que %d.\n",
 623                                     rsp->id);
 624                                 return ret;
 625                         }
 626                 }
 627         }
 628         return ret;
 629 }
 630
 631 int
 632 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 633         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 634 {
 635         int ret = 0;
 636         struct req_que *req = NULL;
 637         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 638         uint16_t que_id = 0;
 639         device_reg_t *reg;
 640         uint32_t cnt;
 641
 642         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 643         if (req == NULL) {
 644                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 645                     "Failed to allocate memory for request queue.\n");
 646                 goto failed;
 647         }
 648
 649         req->length = REQUEST_ENTRY_CNT_24XX;
 650         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 651                         (req->length + 1) * sizeof(request_t),
 652                         &req->dma, GFP_KERNEL);
 653         if (req->ring == NULL) {
 654                 ql_log(ql_log_fatal, base_vha, 0x00da,
 655                     "Failed to allocate memory for request_ring.\n");
 656                 goto que_failed;
 657         }
 658
 659         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 660         if (ret != QLA_SUCCESS)
 661                 goto que_failed;
 662
 663         mutex_lock(&ha->vport_lock);
 664         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 665         if (que_id >= ha->max_req_queues) {
 666                 mutex_unlock(&ha->vport_lock);
 667                 ql_log(ql_log_warn, base_vha, 0x00db,
 668                     "No resources to create additional request queue.\n");
 669                 goto que_failed;
 670         }
 671         set_bit(que_id, ha->req_qid_map);
 672         ha->req_q_map[que_id] = req;
 673         req->rid = rid;
 674         req->vp_idx = vp_idx;
 675         req->qos = qos;
 676
 677         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 678             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 679             que_id, req->rid, req->vp_idx, req->qos);
 680         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 681             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 682             que_id, req->rid, req->vp_idx, req->qos);
 683         if (rsp_que < 0)
 684                 req->rsp = NULL;
 685         else
 686                 req->rsp = ha->rsp_q_map[rsp_que];
 687         /* Use alternate PCI bus number */
 688         if (MSB(req->rid))
 689                 options |= BIT_4;
 690         /* Use alternate PCI devfn */
 691         if (LSB(req->rid))
 692                 options |= BIT_5;
 693         req->options = options;
 694
 695         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 696             "options=0x%x.\n", req->options);
 697         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 698             "options=0x%x.\n", req->options);
 699         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 700                 req->outstanding_cmds[cnt] = NULL;
 701         req->current_outstanding_cmd = 1;
 702
 703         req->ring_ptr = req->ring;
 704         req->ring_index = 0;
 705         req->cnt = req->length;
 706         req->id = que_id;
 707         reg = ISP_QUE_REG(ha, que_id);
 708         req->req_q_in = &reg->isp25mq.req_q_in;
 709         req->req_q_out = &reg->isp25mq.req_q_out;
 710         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 711         req->out_ptr = (void *)(req->ring + req->length);
 712         mutex_unlock(&ha->vport_lock);
 713         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 714             "ring_ptr=%p ring_index=%d, "
 715             "cnt=%d id=%d max_q_depth=%d.\n",
 716             req->ring_ptr, req->ring_index,
 717             req->cnt, req->id, req->max_q_depth);
 718         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 719             "ring_ptr=%p ring_index=%d, "
 720             "cnt=%d id=%d max_q_depth=%d.\n",
 721             req->ring_ptr, req->ring_index, req->cnt,
 722             req->id, req->max_q_depth);
 723
 724         ret = qla25xx_init_req_que(base_vha, req);
 725         if (ret != QLA_SUCCESS) {
 726                 ql_log(ql_log_fatal, base_vha, 0x00df,
 727                     "%s failed.\n", __func__);
 728                 mutex_lock(&ha->vport_lock);
 729                 clear_bit(que_id, ha->req_qid_map);
 730                 mutex_unlock(&ha->vport_lock);
 731                 goto que_failed;
 732         }
 733
 734         return req->id;
 735
 736 que_failed:
 737         qla25xx_free_req_que(base_vha, req);
 738 failed:
 739         return 0;
 740 }
 741
 742 static void qla_do_work(struct work_struct *work)
 743 {
 744         unsigned long flags;
 745         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 746         struct scsi_qla_host *vha;
 747         struct qla_hw_data *ha = rsp->hw;
 748
 749         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 750         vha = pci_get_drvdata(ha->pdev);
 751         qla24xx_process_response_queue(vha, rsp);
 752         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 753 }
 754
 755 /* create response queue */
 756 int
 757 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 758         uint8_t vp_idx, uint16_t rid, int req)
 759 {
 760         int ret = 0;
 761         struct rsp_que *rsp = NULL;
 762         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 763         uint16_t que_id = 0;
 764         device_reg_t *reg;
 765
 766         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 767         if (rsp == NULL) {
 768                 ql_log(ql_log_warn, base_vha, 0x0066,
 769                     "Failed to allocate memory for response queue.\n");
 770                 goto failed;
 771         }
 772
 773         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 774         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 775                         (rsp->length + 1) * sizeof(response_t),
 776                         &rsp->dma, GFP_KERNEL);
 777         if (rsp->ring == NULL) {
 778                 ql_log(ql_log_warn, base_vha, 0x00e1,
 779                     "Failed to allocate memory for response ring.\n");
 780                 goto que_failed;
 781         }
 782
 783         mutex_lock(&ha->vport_lock);
 784         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 785         if (que_id >= ha->max_rsp_queues) {
 786                 mutex_unlock(&ha->vport_lock);
 787                 ql_log(ql_log_warn, base_vha, 0x00e2,
 788                     "No resources to create additional request queue.\n");
 789                 goto que_failed;
 790         }
 791         set_bit(que_id, ha->rsp_qid_map);
 792
 793         if (ha->flags.msix_enabled)
 794                 rsp->msix = &ha->msix_entries[que_id + 1];
 795         else
 796                 ql_log(ql_log_warn, base_vha, 0x00e3,
 797                     "MSIX not enabled.\n");
 798
 799         ha->rsp_q_map[que_id] = rsp;
 800         rsp->rid = rid;
 801         rsp->vp_idx = vp_idx;
 802         rsp->hw = ha;
 803         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 804             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 805             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 806         /* Use alternate PCI bus number */
 807         if (MSB(rsp->rid))
 808                 options |= BIT_4;
 809         /* Use alternate PCI devfn */
 810         if (LSB(rsp->rid))
 811                 options |= BIT_5;
 812         /* Enable MSIX handshake mode on for uncapable adapters */
 813         if (!IS_MSIX_NACK_CAPABLE(ha))
 814                 options |= BIT_6;
 815
 816         rsp->options = options;
 817         rsp->id = que_id;
 818         reg = ISP_QUE_REG(ha, que_id);
 819         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 820         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 821         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 822         mutex_unlock(&ha->vport_lock);
 823         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 824             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 825             rsp->options, rsp->id, rsp->rsp_q_in,
 826             rsp->rsp_q_out);
 827         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 828             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 829             rsp->options, rsp->id, rsp->rsp_q_in,
 830             rsp->rsp_q_out);
 831
 832         ret = qla25xx_request_irq(rsp);
 833         if (ret)
 834                 goto que_failed;
 835
 836         ret = qla25xx_init_rsp_que(base_vha, rsp);
 837         if (ret != QLA_SUCCESS) {
 838                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 839                     "%s failed.\n", __func__);
 840                 mutex_lock(&ha->vport_lock);
 841                 clear_bit(que_id, ha->rsp_qid_map);
 842                 mutex_unlock(&ha->vport_lock);
 843                 goto que_failed;
 844         }
 845         if (req >= 0)
 846                 rsp->req = ha->req_q_map[req];
 847         else
 848                 rsp->req = NULL;
 849
 850         qla2x00_init_response_q_entries(rsp);
 851         if (rsp->hw->wq)
 852                 INIT_WORK(&rsp->q_work, qla_do_work);
 853         return rsp->id;
 854
 855 que_failed:
 856         qla25xx_free_rsp_que(base_vha, rsp);
 857 failed:
 858         return 0;
 859 }