drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2008 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9
  10 #include <linux/moduleparam.h>
  11 #include <linux/vmalloc.h>
  12 #include <linux/list.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <linux/delay.h>
  17
  18 void
  19 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  20 {
  21         if (vha->vp_idx && vha->timer_active) {
  22                 del_timer_sync(&vha->timer);
  23                 vha->timer_active = 0;
  24         }
  25 }
  26
  27 static uint32_t
  28 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  29 {
  30         uint32_t vp_id;
  31         struct qla_hw_data *ha = vha->hw;
  32
  33         /* Find an empty slot and assign an vp_id */
  34         mutex_lock(&ha->vport_lock);
  35         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  36         if (vp_id > ha->max_npiv_vports) {
  37                 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
  38                     vp_id, ha->max_npiv_vports));
  39                 mutex_unlock(&ha->vport_lock);
  40                 return vp_id;
  41         }
  42
  43         set_bit(vp_id, ha->vp_idx_map);
  44         ha->num_vhosts++;
  45         vha->vp_idx = vp_id;
  46         list_add_tail(&vha->list, &ha->vp_list);
  47         mutex_unlock(&ha->vport_lock);
  48         return vp_id;
  49 }
  50
  51 void
  52 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  53 {
  54         uint16_t vp_id;
  55         struct qla_hw_data *ha = vha->hw;
  56
  57         mutex_lock(&ha->vport_lock);
  58         vp_id = vha->vp_idx;
  59         ha->num_vhosts--;
  60         clear_bit(vp_id, ha->vp_idx_map);
  61         list_del(&vha->list);
  62         mutex_unlock(&ha->vport_lock);
  63 }
  64
  65 static scsi_qla_host_t *
  66 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  67 {
  68         scsi_qla_host_t *vha;
  69         struct scsi_qla_host *tvha;
  70
  71         /* Locate matching device in database. */
  72         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
  73                 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
  74                         return vha;
  75         }
  76         return NULL;
  77 }
  78
  79 /*
  80  * qla2x00_mark_vp_devices_dead
  81  *      Updates fcport state when device goes offline.
  82  *
  83  * Input:
  84  *      ha = adapter block pointer.
  85  *      fcport = port structure pointer.
  86  *
  87  * Return:
  88  *      None.
  89  *
  90  * Context:
  91  */
  92 static void
  93 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
  94 {
  95         fc_port_t *fcport;
  96
  97         list_for_each_entry(fcport, &vha->vp_fcports, list) {
  98                 DEBUG15(printk("scsi(%ld): Marking port dead, "
  99                     "loop_id=0x%04x :%x\n",
 100                     vha->host_no, fcport->loop_id, fcport->vp_idx));
 101
 102                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
 103                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 104                 atomic_set(&fcport->state, FCS_UNCONFIGURED);
 105         }
 106 }
 107
 108 int
 109 qla24xx_disable_vp(scsi_qla_host_t *vha)
 110 {
 111         int ret;
 112
 113         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 114         atomic_set(&vha->loop_state, LOOP_DOWN);
 115         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 116
 117         qla2x00_mark_vp_devices_dead(vha);
 118         atomic_set(&vha->vp_state, VP_FAILED);
 119         vha->flags.management_server_logged_in = 0;
 120         if (ret == QLA_SUCCESS) {
 121                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 122         } else {
 123                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 124                 return -1;
 125         }
 126         return 0;
 127 }
 128
 129 int
 130 qla24xx_enable_vp(scsi_qla_host_t *vha)
 131 {
 132         int ret;
 133         struct qla_hw_data *ha = vha->hw;
 134         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 135
 136         /* Check if physical ha port is Up */
 137         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 138                 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 139                 vha->vp_err_state =  VP_ERR_PORTDWN;
 140                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 141                 goto enable_failed;
 142         }
 143
 144         /* Initialize the new vport unless it is a persistent port */
 145         mutex_lock(&ha->vport_lock);
 146         ret = qla24xx_modify_vp_config(vha);
 147         mutex_unlock(&ha->vport_lock);
 148
 149         if (ret != QLA_SUCCESS) {
 150                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 151                 goto enable_failed;
 152         }
 153
 154         DEBUG15(qla_printk(KERN_INFO, ha,
 155             "Virtual port with id: %d - Enabled\n", vha->vp_idx));
 156         return 0;
 157
 158 enable_failed:
 159         DEBUG15(qla_printk(KERN_INFO, ha,
 160             "Virtual port with id: %d - Disabled\n", vha->vp_idx));
 161         return 1;
 162 }
 163
 164 static void
 165 qla24xx_configure_vp(scsi_qla_host_t *vha)
 166 {
 167         struct fc_vport *fc_vport;
 168         int ret;
 169
 170         fc_vport = vha->fc_vport;
 171
 172         DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
 173             vha->host_no, __func__));
 174         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 175         if (ret != QLA_SUCCESS) {
 176                 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
 177                     "receiving of RSCN requests: 0x%x\n", ret));
 178                 return;
 179         } else {
 180                 /* Corresponds to SCR enabled */
 181                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 182         }
 183
 184         vha->flags.online = 1;
 185         if (qla24xx_configure_vhba(vha))
 186                 return;
 187
 188         atomic_set(&vha->vp_state, VP_ACTIVE);
 189         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 190 }
 191
 192 void
 193 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 194 {
 195         scsi_qla_host_t *vha, *tvha;
 196         struct qla_hw_data *ha = rsp->hw;
 197         int i = 0;
 198
 199         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 200                 if (vha->vp_idx) {
 201                         switch (mb[0]) {
 202                         case MBA_LIP_OCCURRED:
 203                         case MBA_LOOP_UP:
 204                         case MBA_LOOP_DOWN:
 205                         case MBA_LIP_RESET:
 206                         case MBA_POINT_TO_POINT:
 207                         case MBA_CHG_IN_CONNECTION:
 208                         case MBA_PORT_UPDATE:
 209                         case MBA_RSCN_UPDATE:
 210                                 DEBUG15(printk("scsi(%ld)%s: Async_event for"
 211                                 " VP[%d], mb = 0x%x, vha=%p\n",
 212                                 vha->host_no, __func__, i, *mb, vha));
 213                                 qla2x00_async_event(vha, rsp, mb);
 214                                 break;
 215                         }
 216                 }
 217                 i++;
 218         }
 219 }
 220
 221 int
 222 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 223 {
 224         /*
 225          * Physical port will do most of the abort and recovery work. We can
 226          * just treat it as a loop down
 227          */
 228         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 229                 atomic_set(&vha->loop_state, LOOP_DOWN);
 230                 qla2x00_mark_all_devices_lost(vha, 0);
 231         } else {
 232                 if (!atomic_read(&vha->loop_down_timer))
 233                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 234         }
 235
 236         /*
 237          * To exclusively reset vport, we need to log it out first.  Note: this
 238          * control_vp can fail if ISP reset is already issued, this is
 239          * expected, as the vp would be already logged out due to ISP reset.
 240          */
 241         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 242                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 243
 244         DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
 245             vha->host_no, vha->vp_idx));
 246         return qla24xx_enable_vp(vha);
 247 }
 248
 249 static int
 250 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 251 {
 252         qla2x00_do_work(vha);
 253
 254         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 255                 /* VP acquired. complete port configuration */
 256                 qla24xx_configure_vp(vha);
 257                 return 0;
 258         }
 259
 260         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 261                 qla2x00_update_fcports(vha);
 262                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 263         }
 264
 265         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 266                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 267                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 268
 269                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
 270                                                 vha->host_no));
 271                 qla2x00_relogin(vha);
 272
 273                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
 274                                                         vha->host_no));
 275         }
 276
 277         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 278             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 279                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 280         }
 281
 282         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 283                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 284                         qla2x00_loop_resync(vha);
 285                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 286                 }
 287         }
 288
 289         return 0;
 290 }
 291
 292 void
 293 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 294 {
 295         int ret;
 296         struct qla_hw_data *ha = vha->hw;
 297         scsi_qla_host_t *vp;
 298         struct scsi_qla_host *tvp;
 299
 300         if (vha->vp_idx)
 301                 return;
 302         if (list_empty(&ha->vp_list))
 303                 return;
 304
 305         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 306
 307         if (!(ha->current_topology & ISP_CFG_F))
 308                 return;
 309
 310         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
 311                 if (vp->vp_idx)
 312                         ret = qla2x00_do_dpc_vp(vp);
 313         }
 314 }
 315
 316 int
 317 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 318 {
 319         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 320         struct qla_hw_data *ha = base_vha->hw;
 321         scsi_qla_host_t *vha;
 322         uint8_t port_name[WWN_SIZE];
 323
 324         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 325                 return VPCERR_UNSUPPORTED;
 326
 327         /* Check up the F/W and H/W support NPIV */
 328         if (!ha->flags.npiv_supported)
 329                 return VPCERR_UNSUPPORTED;
 330
 331         /* Check up whether npiv supported switch presented */
 332         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 333                 return VPCERR_NO_FABRIC_SUPP;
 334
 335         /* Check up unique WWPN */
 336         u64_to_wwn(fc_vport->port_name, port_name);
 337         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 338                 return VPCERR_BAD_WWN;
 339         vha = qla24xx_find_vhost_by_name(ha, port_name);
 340         if (vha)
 341                 return VPCERR_BAD_WWN;
 342
 343         /* Check up max-npiv-supports */
 344         if (ha->num_vhosts > ha->max_npiv_vports) {
 345                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 346                     "max_npv_vports %ud.\n", base_vha->host_no,
 347                     ha->num_vhosts, ha->max_npiv_vports));
 348                 return VPCERR_UNSUPPORTED;
 349         }
 350         return 0;
 351 }
 352
 353 scsi_qla_host_t *
 354 qla24xx_create_vhost(struct fc_vport *fc_vport)
 355 {
 356         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 357         struct qla_hw_data *ha = base_vha->hw;
 358         scsi_qla_host_t *vha;
 359         struct scsi_host_template *sht = &qla2xxx_driver_template;
 360         struct Scsi_Host *host;
 361
 362         vha = qla2x00_create_host(sht, ha);
 363         if (!vha) {
 364                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
 365                 return(NULL);
 366         }
 367
 368         host = vha->host;
 369         fc_vport->dd_data = vha;
 370         /* New host info */
 371         u64_to_wwn(fc_vport->node_name, vha->node_name);
 372         u64_to_wwn(fc_vport->port_name, vha->port_name);
 373
 374         vha->fc_vport = fc_vport;
 375         vha->device_flags = 0;
 376         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 377         if (vha->vp_idx > ha->max_npiv_vports) {
 378                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 379                         vha->host_no));
 380                 goto create_vhost_failed;
 381         }
 382         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 383
 384         vha->dpc_flags = 0L;
 385
 386         /*
 387          * To fix the issue of processing a parent's RSCN for the vport before
 388          * its SCR is complete.
 389          */
 390         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 391         atomic_set(&vha->loop_state, LOOP_DOWN);
 392         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 393
 394         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 395
 396         vha->req = base_vha->req;
 397         host->can_queue = base_vha->req->length + 128;
 398         host->this_id = 255;
 399         host->cmd_per_lun = 3;
 400         host->max_cmd_len = MAX_CMDSZ;
 401         host->max_channel = MAX_BUSES - 1;
 402         host->max_lun = MAX_LUNS;
 403         host->unique_id = host->host_no;
 404         host->max_id = MAX_TARGETS_2200;
 405         host->transportt = qla2xxx_transport_vport_template;
 406
 407         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 408             vha->host_no, vha));
 409
 410         vha->flags.init_done = 1;
 411
 412         mutex_lock(&ha->vport_lock);
 413         set_bit(vha->vp_idx, ha->vp_idx_map);
 414         ha->cur_vport_count++;
 415         mutex_unlock(&ha->vport_lock);
 416
 417         return vha;
 418
 419 create_vhost_failed:
 420         return NULL;
 421 }
 422
 423 static void
 424 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 425 {
 426         struct qla_hw_data *ha = vha->hw;
 427         uint16_t que_id = req->id;
 428
 429         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 430                 sizeof(request_t), req->ring, req->dma);
 431         req->ring = NULL;
 432         req->dma = 0;
 433         if (que_id) {
 434                 ha->req_q_map[que_id] = NULL;
 435                 mutex_lock(&ha->vport_lock);
 436                 clear_bit(que_id, ha->req_qid_map);
 437                 mutex_unlock(&ha->vport_lock);
 438         }
 439         kfree(req);
 440         req = NULL;
 441 }
 442
 443 static void
 444 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 445 {
 446         struct qla_hw_data *ha = vha->hw;
 447         uint16_t que_id = rsp->id;
 448
 449         if (rsp->msix && rsp->msix->have_irq) {
 450                 free_irq(rsp->msix->vector, rsp);
 451                 rsp->msix->have_irq = 0;
 452                 rsp->msix->rsp = NULL;
 453         }
 454         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 455                 sizeof(response_t), rsp->ring, rsp->dma);
 456         rsp->ring = NULL;
 457         rsp->dma = 0;
 458         if (que_id) {
 459                 ha->rsp_q_map[que_id] = NULL;
 460                 mutex_lock(&ha->vport_lock);
 461                 clear_bit(que_id, ha->rsp_qid_map);
 462                 mutex_unlock(&ha->vport_lock);
 463         }
 464         kfree(rsp);
 465         rsp = NULL;
 466 }
 467
 468 int
 469 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 470 {
 471         int ret = -1;
 472
 473         if (req) {
 474                 req->options |= BIT_0;
 475                 ret = qla25xx_init_req_que(vha, req);
 476         }
 477         if (ret == QLA_SUCCESS)
 478                 qla25xx_free_req_que(vha, req);
 479
 480         return ret;
 481 }
 482
 483 int
 484 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 485 {
 486         int ret = -1;
 487
 488         if (rsp) {
 489                 rsp->options |= BIT_0;
 490                 ret = qla25xx_init_rsp_que(vha, rsp);
 491         }
 492         if (ret == QLA_SUCCESS)
 493                 qla25xx_free_rsp_que(vha, rsp);
 494
 495         return ret;
 496 }
 497
 498 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
 499 {
 500         int ret = 0;
 501         struct qla_hw_data *ha = vha->hw;
 502         struct req_que *req = ha->req_q_map[que];
 503
 504         req->options |= BIT_3;
 505         req->qos = qos;
 506         ret = qla25xx_init_req_que(vha, req);
 507         if (ret != QLA_SUCCESS)
 508                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
 509         /* restore options bit */
 510         req->options &= ~BIT_3;
 511         return ret;
 512 }
 513
 514
 515 /* Delete all queues for a given vhost */
 516 int
 517 qla25xx_delete_queues(struct scsi_qla_host *vha)
 518 {
 519         int cnt, ret = 0;
 520         struct req_que *req = NULL;
 521         struct rsp_que *rsp = NULL;
 522         struct qla_hw_data *ha = vha->hw;
 523
 524         /* Delete request queues */
 525         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 526                 req = ha->req_q_map[cnt];
 527                 if (req) {
 528                         ret = qla25xx_delete_req_que(vha, req);
 529                         if (ret != QLA_SUCCESS) {
 530                                 qla_printk(KERN_WARNING, ha,
 531                                 "Couldn't delete req que %d\n",
 532                                 req->id);
 533                                 return ret;
 534                         }
 535                 }
 536         }
 537
 538         /* Delete response queues */
 539         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 540                 rsp = ha->rsp_q_map[cnt];
 541                 if (rsp) {
 542                         ret = qla25xx_delete_rsp_que(vha, rsp);
 543                         if (ret != QLA_SUCCESS) {
 544                                 qla_printk(KERN_WARNING, ha,
 545                                 "Couldn't delete rsp que %d\n",
 546                                 rsp->id);
 547                                 return ret;
 548                         }
 549                 }
 550         }
 551         return ret;
 552 }
 553
 554 int
 555 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 556         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 557 {
 558         int ret = 0;
 559         struct req_que *req = NULL;
 560         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 561         uint16_t que_id = 0;
 562         device_reg_t __iomem *reg;
 563         uint32_t cnt;
 564
 565         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 566         if (req == NULL) {
 567                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
 568                         "for request que\n");
 569                 goto failed;
 570         }
 571
 572         req->length = REQUEST_ENTRY_CNT_24XX;
 573         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 574                         (req->length + 1) * sizeof(request_t),
 575                         &req->dma, GFP_KERNEL);
 576         if (req->ring == NULL) {
 577                 qla_printk(KERN_WARNING, ha,
 578                 "Memory Allocation failed - request_ring\n");
 579                 goto que_failed;
 580         }
 581
 582         mutex_lock(&ha->vport_lock);
 583         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 584         if (que_id >= ha->max_req_queues) {
 585                 mutex_unlock(&ha->vport_lock);
 586                 qla_printk(KERN_INFO, ha, "No resources to create "
 587                          "additional request queue\n");
 588                 goto que_failed;
 589         }
 590         set_bit(que_id, ha->req_qid_map);
 591         ha->req_q_map[que_id] = req;
 592         req->rid = rid;
 593         req->vp_idx = vp_idx;
 594         req->qos = qos;
 595
 596         if (rsp_que < 0)
 597                 req->rsp = NULL;
 598         else
 599                 req->rsp = ha->rsp_q_map[rsp_que];
 600         /* Use alternate PCI bus number */
 601         if (MSB(req->rid))
 602                 options |= BIT_4;
 603         /* Use alternate PCI devfn */
 604         if (LSB(req->rid))
 605                 options |= BIT_5;
 606         req->options = options;
 607
 608         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 609                 req->outstanding_cmds[cnt] = NULL;
 610         req->current_outstanding_cmd = 1;
 611
 612         req->ring_ptr = req->ring;
 613         req->ring_index = 0;
 614         req->cnt = req->length;
 615         req->id = que_id;
 616         reg = ISP_QUE_REG(ha, que_id);
 617         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 618         mutex_unlock(&ha->vport_lock);
 619
 620         ret = qla25xx_init_req_que(base_vha, req);
 621         if (ret != QLA_SUCCESS) {
 622                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 623                 mutex_lock(&ha->vport_lock);
 624                 clear_bit(que_id, ha->req_qid_map);
 625                 mutex_unlock(&ha->vport_lock);
 626                 goto que_failed;
 627         }
 628
 629         return req->id;
 630
 631 que_failed:
 632         qla25xx_free_req_que(base_vha, req);
 633 failed:
 634         return 0;
 635 }
 636
 637 static void qla_do_work(struct work_struct *work)
 638 {
 639         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 640         struct scsi_qla_host *vha;
 641
 642         spin_lock_irq(&rsp->hw->hardware_lock);
 643         vha = qla25xx_get_host(rsp);
 644         qla24xx_process_response_queue(vha, rsp);
 645         spin_unlock_irq(&rsp->hw->hardware_lock);
 646 }
 647
 648 /* create response queue */
 649 int
 650 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 651         uint8_t vp_idx, uint16_t rid, int req)
 652 {
 653         int ret = 0;
 654         struct rsp_que *rsp = NULL;
 655         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 656         uint16_t que_id = 0;
 657         device_reg_t __iomem *reg;
 658
 659         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 660         if (rsp == NULL) {
 661                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
 662                                 " response que\n");
 663                 goto failed;
 664         }
 665
 666         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 667         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 668                         (rsp->length + 1) * sizeof(response_t),
 669                         &rsp->dma, GFP_KERNEL);
 670         if (rsp->ring == NULL) {
 671                 qla_printk(KERN_WARNING, ha,
 672                 "Memory Allocation failed - response_ring\n");
 673                 goto que_failed;
 674         }
 675
 676         mutex_lock(&ha->vport_lock);
 677         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 678         if (que_id >= ha->max_rsp_queues) {
 679                 mutex_unlock(&ha->vport_lock);
 680                 qla_printk(KERN_INFO, ha, "No resources to create "
 681                          "additional response queue\n");
 682                 goto que_failed;
 683         }
 684         set_bit(que_id, ha->rsp_qid_map);
 685
 686         if (ha->flags.msix_enabled)
 687                 rsp->msix = &ha->msix_entries[que_id + 1];
 688         else
 689                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
 690
 691         ha->rsp_q_map[que_id] = rsp;
 692         rsp->rid = rid;
 693         rsp->vp_idx = vp_idx;
 694         rsp->hw = ha;
 695         /* Use alternate PCI bus number */
 696         if (MSB(rsp->rid))
 697                 options |= BIT_4;
 698         /* Use alternate PCI devfn */
 699         if (LSB(rsp->rid))
 700                 options |= BIT_5;
 701         /* Enable MSIX handshake mode on for uncapable adapters */
 702         if (!IS_MSIX_NACK_CAPABLE(ha))
 703                 options |= BIT_6;
 704
 705         rsp->options = options;
 706         rsp->id = que_id;
 707         reg = ISP_QUE_REG(ha, que_id);
 708         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 709         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 710         mutex_unlock(&ha->vport_lock);
 711
 712         ret = qla25xx_request_irq(rsp);
 713         if (ret)
 714                 goto que_failed;
 715
 716         ret = qla25xx_init_rsp_que(base_vha, rsp);
 717         if (ret != QLA_SUCCESS) {
 718                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 719                 mutex_lock(&ha->vport_lock);
 720                 clear_bit(que_id, ha->rsp_qid_map);
 721                 mutex_unlock(&ha->vport_lock);
 722                 goto que_failed;
 723         }
 724         if (req >= 0)
 725                 rsp->req = ha->req_q_map[req];
 726         else
 727                 rsp->req = NULL;
 728
 729         qla2x00_init_response_q_entries(rsp);
 730         if (rsp->hw->wq)
 731                 INIT_WORK(&rsp->q_work, qla_do_work);
 732         return rsp->id;
 733
 734 que_failed:
 735         qla25xx_free_rsp_que(base_vha, rsp);
 736 failed:
 737         return 0;
 738 }
 739
 740 int
 741 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
 742 {
 743         uint16_t options = 0;
 744         uint8_t ret = 0;
 745         struct qla_hw_data *ha = vha->hw;
 746         struct rsp_que *rsp;
 747
 748         options |= BIT_1;
 749         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
 750         if (!ret) {
 751                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
 752                 return ret;
 753         } else
 754                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
 755         rsp = ha->rsp_q_map[ret];
 756
 757         options = 0;
 758         if (qos & BIT_7)
 759                 options |= BIT_8;
 760         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
 761                                         qos & ~BIT_7);
 762         if (ret) {
 763                 vha->req = ha->req_q_map[ret];
 764                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
 765         } else
 766                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
 767         rsp->req = ha->req_q_map[ret];
 768
 769         return ret;
 770 }