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/slab.h>
  13 #include <linux/list.h>
  14
  15 #include <scsi/scsi_tcq.h>
  16 #include <scsi/scsicam.h>
  17 #include <linux/delay.h>
  18
  19 void
  20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  21 {
  22         if (vha->vp_idx && vha->timer_active) {
  23                 del_timer_sync(&vha->timer);
  24                 vha->timer_active = 0;
  25         }
  26 }
  27
  28 static uint32_t
  29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  30 {
  31         uint32_t vp_id;
  32         struct qla_hw_data *ha = vha->hw;
  33
  34         /* Find an empty slot and assign an vp_id */
  35         mutex_lock(&ha->vport_lock);
  36         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  37         if (vp_id > ha->max_npiv_vports) {
  38                 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
  39                     vp_id, ha->max_npiv_vports));
  40                 mutex_unlock(&ha->vport_lock);
  41                 return vp_id;
  42         }
  43
  44         set_bit(vp_id, ha->vp_idx_map);
  45         ha->num_vhosts++;
  46         vha->vp_idx = vp_id;
  47         list_add_tail(&vha->list, &ha->vp_list);
  48         mutex_unlock(&ha->vport_lock);
  49         return vp_id;
  50 }
  51
  52 void
  53 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  54 {
  55         uint16_t vp_id;
  56         struct qla_hw_data *ha = vha->hw;
  57
  58         mutex_lock(&ha->vport_lock);
  59         vp_id = vha->vp_idx;
  60         ha->num_vhosts--;
  61         clear_bit(vp_id, ha->vp_idx_map);
  62         list_del(&vha->list);
  63         mutex_unlock(&ha->vport_lock);
  64 }
  65
  66 static scsi_qla_host_t *
  67 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  68 {
  69         scsi_qla_host_t *vha;
  70         struct scsi_qla_host *tvha;
  71
  72         /* Locate matching device in database. */
  73         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
  74                 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
  75                         return vha;
  76         }
  77         return NULL;
  78 }
  79
  80 /*
  81  * qla2x00_mark_vp_devices_dead
  82  *      Updates fcport state when device goes offline.
  83  *
  84  * Input:
  85  *      ha = adapter block pointer.
  86  *      fcport = port structure pointer.
  87  *
  88  * Return:
  89  *      None.
  90  *
  91  * Context:
  92  */
  93 static void
  94 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
  95 {
  96         fc_port_t *fcport;
  97
  98         list_for_each_entry(fcport, &vha->vp_fcports, list) {
  99                 DEBUG15(printk("scsi(%ld): Marking port dead, "
 100                     "loop_id=0x%04x :%x\n",
 101                     vha->host_no, fcport->loop_id, fcport->vp_idx));
 102
 103                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
 104                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 105                 atomic_set(&fcport->state, FCS_UNCONFIGURED);
 106         }
 107 }
 108
 109 int
 110 qla24xx_disable_vp(scsi_qla_host_t *vha)
 111 {
 112         int ret;
 113
 114         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 115         atomic_set(&vha->loop_state, LOOP_DOWN);
 116         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 117
 118         qla2x00_mark_vp_devices_dead(vha);
 119         atomic_set(&vha->vp_state, VP_FAILED);
 120         vha->flags.management_server_logged_in = 0;
 121         if (ret == QLA_SUCCESS) {
 122                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 123         } else {
 124                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 125                 return -1;
 126         }
 127         return 0;
 128 }
 129
 130 int
 131 qla24xx_enable_vp(scsi_qla_host_t *vha)
 132 {
 133         int ret;
 134         struct qla_hw_data *ha = vha->hw;
 135         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 136
 137         /* Check if physical ha port is Up */
 138         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 139                 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 140                 vha->vp_err_state =  VP_ERR_PORTDWN;
 141                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 142                 goto enable_failed;
 143         }
 144
 145         /* Initialize the new vport unless it is a persistent port */
 146         mutex_lock(&ha->vport_lock);
 147         ret = qla24xx_modify_vp_config(vha);
 148         mutex_unlock(&ha->vport_lock);
 149
 150         if (ret != QLA_SUCCESS) {
 151                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 152                 goto enable_failed;
 153         }
 154
 155         DEBUG15(qla_printk(KERN_INFO, ha,
 156             "Virtual port with id: %d - Enabled\n", vha->vp_idx));
 157         return 0;
 158
 159 enable_failed:
 160         DEBUG15(qla_printk(KERN_INFO, ha,
 161             "Virtual port with id: %d - Disabled\n", vha->vp_idx));
 162         return 1;
 163 }
 164
 165 static void
 166 qla24xx_configure_vp(scsi_qla_host_t *vha)
 167 {
 168         struct fc_vport *fc_vport;
 169         int ret;
 170
 171         fc_vport = vha->fc_vport;
 172
 173         DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
 174             vha->host_no, __func__));
 175         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 176         if (ret != QLA_SUCCESS) {
 177                 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
 178                     "receiving of RSCN requests: 0x%x\n", ret));
 179                 return;
 180         } else {
 181                 /* Corresponds to SCR enabled */
 182                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 183         }
 184
 185         vha->flags.online = 1;
 186         if (qla24xx_configure_vhba(vha))
 187                 return;
 188
 189         atomic_set(&vha->vp_state, VP_ACTIVE);
 190         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 191 }
 192
 193 void
 194 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 195 {
 196         scsi_qla_host_t *vha, *tvha;
 197         struct qla_hw_data *ha = rsp->hw;
 198         int i = 0;
 199
 200         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 201                 if (vha->vp_idx) {
 202                         switch (mb[0]) {
 203                         case MBA_LIP_OCCURRED:
 204                         case MBA_LOOP_UP:
 205                         case MBA_LOOP_DOWN:
 206                         case MBA_LIP_RESET:
 207                         case MBA_POINT_TO_POINT:
 208                         case MBA_CHG_IN_CONNECTION:
 209                         case MBA_PORT_UPDATE:
 210                         case MBA_RSCN_UPDATE:
 211                                 DEBUG15(printk("scsi(%ld)%s: Async_event for"
 212                                 " VP[%d], mb = 0x%x, vha=%p\n",
 213                                 vha->host_no, __func__, i, *mb, vha));
 214                                 qla2x00_async_event(vha, rsp, mb);
 215                                 break;
 216                         }
 217                 }
 218                 i++;
 219         }
 220 }
 221
 222 int
 223 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 224 {
 225         /*
 226          * Physical port will do most of the abort and recovery work. We can
 227          * just treat it as a loop down
 228          */
 229         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 230                 atomic_set(&vha->loop_state, LOOP_DOWN);
 231                 qla2x00_mark_all_devices_lost(vha, 0);
 232         } else {
 233                 if (!atomic_read(&vha->loop_down_timer))
 234                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 235         }
 236
 237         /*
 238          * To exclusively reset vport, we need to log it out first.  Note: this
 239          * control_vp can fail if ISP reset is already issued, this is
 240          * expected, as the vp would be already logged out due to ISP reset.
 241          */
 242         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 243                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 244
 245         DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
 246             vha->host_no, vha->vp_idx));
 247         return qla24xx_enable_vp(vha);
 248 }
 249
 250 static int
 251 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 252 {
 253         qla2x00_do_work(vha);
 254
 255         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 256                 /* VP acquired. complete port configuration */
 257                 qla24xx_configure_vp(vha);
 258                 return 0;
 259         }
 260
 261         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 262                 qla2x00_update_fcports(vha);
 263                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 264         }
 265
 266         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 267                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 268                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 269
 270                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
 271                                                 vha->host_no));
 272                 qla2x00_relogin(vha);
 273
 274                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
 275                                                         vha->host_no));
 276         }
 277
 278         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 279             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 280                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 281         }
 282
 283         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 284                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 285                         qla2x00_loop_resync(vha);
 286                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 287                 }
 288         }
 289
 290         return 0;
 291 }
 292
 293 void
 294 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 295 {
 296         int ret;
 297         struct qla_hw_data *ha = vha->hw;
 298         scsi_qla_host_t *vp;
 299         struct scsi_qla_host *tvp;
 300
 301         if (vha->vp_idx)
 302                 return;
 303         if (list_empty(&ha->vp_list))
 304                 return;
 305
 306         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 307
 308         if (!(ha->current_topology & ISP_CFG_F))
 309                 return;
 310
 311         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
 312                 if (vp->vp_idx)
 313                         ret = qla2x00_do_dpc_vp(vp);
 314         }
 315 }
 316
 317 int
 318 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 319 {
 320         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 321         struct qla_hw_data *ha = base_vha->hw;
 322         scsi_qla_host_t *vha;
 323         uint8_t port_name[WWN_SIZE];
 324
 325         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 326                 return VPCERR_UNSUPPORTED;
 327
 328         /* Check up the F/W and H/W support NPIV */
 329         if (!ha->flags.npiv_supported)
 330                 return VPCERR_UNSUPPORTED;
 331
 332         /* Check up whether npiv supported switch presented */
 333         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 334                 return VPCERR_NO_FABRIC_SUPP;
 335
 336         /* Check up unique WWPN */
 337         u64_to_wwn(fc_vport->port_name, port_name);
 338         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 339                 return VPCERR_BAD_WWN;
 340         vha = qla24xx_find_vhost_by_name(ha, port_name);
 341         if (vha)
 342                 return VPCERR_BAD_WWN;
 343
 344         /* Check up max-npiv-supports */
 345         if (ha->num_vhosts > ha->max_npiv_vports) {
 346                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 347                     "max_npv_vports %ud.\n", base_vha->host_no,
 348                     ha->num_vhosts, ha->max_npiv_vports));
 349                 return VPCERR_UNSUPPORTED;
 350         }
 351         return 0;
 352 }
 353
 354 scsi_qla_host_t *
 355 qla24xx_create_vhost(struct fc_vport *fc_vport)
 356 {
 357         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 358         struct qla_hw_data *ha = base_vha->hw;
 359         scsi_qla_host_t *vha;
 360         struct scsi_host_template *sht = &qla2xxx_driver_template;
 361         struct Scsi_Host *host;
 362
 363         vha = qla2x00_create_host(sht, ha);
 364         if (!vha) {
 365                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
 366                 return(NULL);
 367         }
 368
 369         host = vha->host;
 370         fc_vport->dd_data = vha;
 371         /* New host info */
 372         u64_to_wwn(fc_vport->node_name, vha->node_name);
 373         u64_to_wwn(fc_vport->port_name, vha->port_name);
 374
 375         vha->fc_vport = fc_vport;
 376         vha->device_flags = 0;
 377         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 378         if (vha->vp_idx > ha->max_npiv_vports) {
 379                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 380                         vha->host_no));
 381                 goto create_vhost_failed;
 382         }
 383         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 384
 385         vha->dpc_flags = 0L;
 386
 387         /*
 388          * To fix the issue of processing a parent's RSCN for the vport before
 389          * its SCR is complete.
 390          */
 391         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 392         atomic_set(&vha->loop_state, LOOP_DOWN);
 393         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 394
 395         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 396
 397         vha->req = base_vha->req;
 398         host->can_queue = base_vha->req->length + 128;
 399         host->this_id = 255;
 400         host->cmd_per_lun = 3;
 401         host->max_cmd_len = MAX_CMDSZ;
 402         host->max_channel = MAX_BUSES - 1;
 403         host->max_lun = MAX_LUNS;
 404         host->unique_id = host->host_no;
 405         host->max_id = MAX_TARGETS_2200;
 406         host->transportt = qla2xxx_transport_vport_template;
 407
 408         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 409             vha->host_no, vha));
 410
 411         vha->flags.init_done = 1;
 412
 413         mutex_lock(&ha->vport_lock);
 414         set_bit(vha->vp_idx, ha->vp_idx_map);
 415         ha->cur_vport_count++;
 416         mutex_unlock(&ha->vport_lock);
 417
 418         return vha;
 419
 420 create_vhost_failed:
 421         return NULL;
 422 }
 423
 424 static void
 425 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 426 {
 427         struct qla_hw_data *ha = vha->hw;
 428         uint16_t que_id = req->id;
 429
 430         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 431                 sizeof(request_t), req->ring, req->dma);
 432         req->ring = NULL;
 433         req->dma = 0;
 434         if (que_id) {
 435                 ha->req_q_map[que_id] = NULL;
 436                 mutex_lock(&ha->vport_lock);
 437                 clear_bit(que_id, ha->req_qid_map);
 438                 mutex_unlock(&ha->vport_lock);
 439         }
 440         kfree(req);
 441         req = NULL;
 442 }
 443
 444 static void
 445 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 446 {
 447         struct qla_hw_data *ha = vha->hw;
 448         uint16_t que_id = rsp->id;
 449
 450         if (rsp->msix && rsp->msix->have_irq) {
 451                 free_irq(rsp->msix->vector, rsp);
 452                 rsp->msix->have_irq = 0;
 453                 rsp->msix->rsp = NULL;
 454         }
 455         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 456                 sizeof(response_t), rsp->ring, rsp->dma);
 457         rsp->ring = NULL;
 458         rsp->dma = 0;
 459         if (que_id) {
 460                 ha->rsp_q_map[que_id] = NULL;
 461                 mutex_lock(&ha->vport_lock);
 462                 clear_bit(que_id, ha->rsp_qid_map);
 463                 mutex_unlock(&ha->vport_lock);
 464         }
 465         kfree(rsp);
 466         rsp = NULL;
 467 }
 468
 469 int
 470 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 471 {
 472         int ret = -1;
 473
 474         if (req) {
 475                 req->options |= BIT_0;
 476                 ret = qla25xx_init_req_que(vha, req);
 477         }
 478         if (ret == QLA_SUCCESS)
 479                 qla25xx_free_req_que(vha, req);
 480
 481         return ret;
 482 }
 483
 484 int
 485 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 486 {
 487         int ret = -1;
 488
 489         if (rsp) {
 490                 rsp->options |= BIT_0;
 491                 ret = qla25xx_init_rsp_que(vha, rsp);
 492         }
 493         if (ret == QLA_SUCCESS)
 494                 qla25xx_free_rsp_que(vha, rsp);
 495
 496         return ret;
 497 }
 498
 499 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
 500 {
 501         int ret = 0;
 502         struct qla_hw_data *ha = vha->hw;
 503         struct req_que *req = ha->req_q_map[que];
 504
 505         req->options |= BIT_3;
 506         req->qos = qos;
 507         ret = qla25xx_init_req_que(vha, req);
 508         if (ret != QLA_SUCCESS)
 509                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
 510         /* restore options bit */
 511         req->options &= ~BIT_3;
 512         return ret;
 513 }
 514
 515
 516 /* Delete all queues for a given vhost */
 517 int
 518 qla25xx_delete_queues(struct scsi_qla_host *vha)
 519 {
 520         int cnt, ret = 0;
 521         struct req_que *req = NULL;
 522         struct rsp_que *rsp = NULL;
 523         struct qla_hw_data *ha = vha->hw;
 524
 525         /* Delete request queues */
 526         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 527                 req = ha->req_q_map[cnt];
 528                 if (req) {
 529                         ret = qla25xx_delete_req_que(vha, req);
 530                         if (ret != QLA_SUCCESS) {
 531                                 qla_printk(KERN_WARNING, ha,
 532                                 "Couldn't delete req que %d\n",
 533                                 req->id);
 534                                 return ret;
 535                         }
 536                 }
 537         }
 538
 539         /* Delete response queues */
 540         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 541                 rsp = ha->rsp_q_map[cnt];
 542                 if (rsp) {
 543                         ret = qla25xx_delete_rsp_que(vha, rsp);
 544                         if (ret != QLA_SUCCESS) {
 545                                 qla_printk(KERN_WARNING, ha,
 546                                 "Couldn't delete rsp que %d\n",
 547                                 rsp->id);
 548                                 return ret;
 549                         }
 550                 }
 551         }
 552         return ret;
 553 }
 554
 555 int
 556 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 557         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 558 {
 559         int ret = 0;
 560         struct req_que *req = NULL;
 561         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 562         uint16_t que_id = 0;
 563         device_reg_t __iomem *reg;
 564         uint32_t cnt;
 565
 566         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 567         if (req == NULL) {
 568                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
 569                         "for request que\n");
 570                 goto failed;
 571         }
 572
 573         req->length = REQUEST_ENTRY_CNT_24XX;
 574         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 575                         (req->length + 1) * sizeof(request_t),
 576                         &req->dma, GFP_KERNEL);
 577         if (req->ring == NULL) {
 578                 qla_printk(KERN_WARNING, ha,
 579                 "Memory Allocation failed - request_ring\n");
 580                 goto que_failed;
 581         }
 582
 583         mutex_lock(&ha->vport_lock);
 584         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 585         if (que_id >= ha->max_req_queues) {
 586                 mutex_unlock(&ha->vport_lock);
 587                 qla_printk(KERN_INFO, ha, "No resources to create "
 588                          "additional request queue\n");
 589                 goto que_failed;
 590         }
 591         set_bit(que_id, ha->req_qid_map);
 592         ha->req_q_map[que_id] = req;
 593         req->rid = rid;
 594         req->vp_idx = vp_idx;
 595         req->qos = qos;
 596
 597         if (rsp_que < 0)
 598                 req->rsp = NULL;
 599         else
 600                 req->rsp = ha->rsp_q_map[rsp_que];
 601         /* Use alternate PCI bus number */
 602         if (MSB(req->rid))
 603                 options |= BIT_4;
 604         /* Use alternate PCI devfn */
 605         if (LSB(req->rid))
 606                 options |= BIT_5;
 607         req->options = options;
 608
 609         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 610                 req->outstanding_cmds[cnt] = NULL;
 611         req->current_outstanding_cmd = 1;
 612
 613         req->ring_ptr = req->ring;
 614         req->ring_index = 0;
 615         req->cnt = req->length;
 616         req->id = que_id;
 617         reg = ISP_QUE_REG(ha, que_id);
 618         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 619         mutex_unlock(&ha->vport_lock);
 620
 621         ret = qla25xx_init_req_que(base_vha, req);
 622         if (ret != QLA_SUCCESS) {
 623                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 624                 mutex_lock(&ha->vport_lock);
 625                 clear_bit(que_id, ha->req_qid_map);
 626                 mutex_unlock(&ha->vport_lock);
 627                 goto que_failed;
 628         }
 629
 630         return req->id;
 631
 632 que_failed:
 633         qla25xx_free_req_que(base_vha, req);
 634 failed:
 635         return 0;
 636 }
 637
 638 static void qla_do_work(struct work_struct *work)
 639 {
 640         unsigned long flags;
 641         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 642         struct scsi_qla_host *vha;
 643         struct qla_hw_data *ha = rsp->hw;
 644
 645         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 646         vha = pci_get_drvdata(ha->pdev);
 647         qla24xx_process_response_queue(vha, rsp);
 648         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 649 }
 650
 651 /* create response queue */
 652 int
 653 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 654         uint8_t vp_idx, uint16_t rid, int req)
 655 {
 656         int ret = 0;
 657         struct rsp_que *rsp = NULL;
 658         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 659         uint16_t que_id = 0;
 660         device_reg_t __iomem *reg;
 661
 662         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 663         if (rsp == NULL) {
 664                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
 665                                 " response que\n");
 666                 goto failed;
 667         }
 668
 669         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 670         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 671                         (rsp->length + 1) * sizeof(response_t),
 672                         &rsp->dma, GFP_KERNEL);
 673         if (rsp->ring == NULL) {
 674                 qla_printk(KERN_WARNING, ha,
 675                 "Memory Allocation failed - response_ring\n");
 676                 goto que_failed;
 677         }
 678
 679         mutex_lock(&ha->vport_lock);
 680         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 681         if (que_id >= ha->max_rsp_queues) {
 682                 mutex_unlock(&ha->vport_lock);
 683                 qla_printk(KERN_INFO, ha, "No resources to create "
 684                          "additional response queue\n");
 685                 goto que_failed;
 686         }
 687         set_bit(que_id, ha->rsp_qid_map);
 688
 689         if (ha->flags.msix_enabled)
 690                 rsp->msix = &ha->msix_entries[que_id + 1];
 691         else
 692                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
 693
 694         ha->rsp_q_map[que_id] = rsp;
 695         rsp->rid = rid;
 696         rsp->vp_idx = vp_idx;
 697         rsp->hw = ha;
 698         /* Use alternate PCI bus number */
 699         if (MSB(rsp->rid))
 700                 options |= BIT_4;
 701         /* Use alternate PCI devfn */
 702         if (LSB(rsp->rid))
 703                 options |= BIT_5;
 704         /* Enable MSIX handshake mode on for uncapable adapters */
 705         if (!IS_MSIX_NACK_CAPABLE(ha))
 706                 options |= BIT_6;
 707
 708         rsp->options = options;
 709         rsp->id = que_id;
 710         reg = ISP_QUE_REG(ha, que_id);
 711         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 712         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 713         mutex_unlock(&ha->vport_lock);
 714
 715         ret = qla25xx_request_irq(rsp);
 716         if (ret)
 717                 goto que_failed;
 718
 719         ret = qla25xx_init_rsp_que(base_vha, rsp);
 720         if (ret != QLA_SUCCESS) {
 721                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 722                 mutex_lock(&ha->vport_lock);
 723                 clear_bit(que_id, ha->rsp_qid_map);
 724                 mutex_unlock(&ha->vport_lock);
 725                 goto que_failed;
 726         }
 727         if (req >= 0)
 728                 rsp->req = ha->req_q_map[req];
 729         else
 730                 rsp->req = NULL;
 731
 732         qla2x00_init_response_q_entries(rsp);
 733         if (rsp->hw->wq)
 734                 INIT_WORK(&rsp->q_work, qla_do_work);
 735         return rsp->id;
 736
 737 que_failed:
 738         qla25xx_free_rsp_que(base_vha, rsp);
 739 failed:
 740         return 0;
 741 }
 742
 743 int
 744 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
 745 {
 746         uint16_t options = 0;
 747         uint8_t ret = 0;
 748         struct qla_hw_data *ha = vha->hw;
 749         struct rsp_que *rsp;
 750
 751         options |= BIT_1;
 752         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
 753         if (!ret) {
 754                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
 755                 return ret;
 756         } else
 757                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
 758         rsp = ha->rsp_q_map[ret];
 759
 760         options = 0;
 761         if (qos & BIT_7)
 762                 options |= BIT_8;
 763         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
 764                                         qos & ~BIT_7);
 765         if (ret) {
 766                 vha->req = ha->req_q_map[ret];
 767                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
 768         } else
 769                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
 770         rsp->req = ha->req_q_map[ret];
 771
 772         return ret;
 773 }