drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2012 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         int ret;
 153
 154         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 155         atomic_set(&vha->loop_state, LOOP_DOWN);
 156         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 157
 158         /* Remove port id from vp target map */
 159         qlt_update_vp_map(vha, RESET_AL_PA);
 160
 161         qla2x00_mark_vp_devices_dead(vha);
 162         atomic_set(&vha->vp_state, VP_FAILED);
 163         vha->flags.management_server_logged_in = 0;
 164         if (ret == QLA_SUCCESS) {
 165                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 166         } else {
 167                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 168                 return -1;
 169         }
 170         return 0;
 171 }
 172
 173 int
 174 qla24xx_enable_vp(scsi_qla_host_t *vha)
 175 {
 176         int ret;
 177         struct qla_hw_data *ha = vha->hw;
 178         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 179
 180         /* Check if physical ha port is Up */
 181         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 182                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 183                 !(ha->current_topology & ISP_CFG_F)) {
 184                 vha->vp_err_state =  VP_ERR_PORTDWN;
 185                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 186                 goto enable_failed;
 187         }
 188
 189         /* Initialize the new vport unless it is a persistent port */
 190         mutex_lock(&ha->vport_lock);
 191         ret = qla24xx_modify_vp_config(vha);
 192         mutex_unlock(&ha->vport_lock);
 193
 194         if (ret != QLA_SUCCESS) {
 195                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 196                 goto enable_failed;
 197         }
 198
 199         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 200             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 201         return 0;
 202
 203 enable_failed:
 204         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 205             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 206         return 1;
 207 }
 208
 209 static void
 210 qla24xx_configure_vp(scsi_qla_host_t *vha)
 211 {
 212         struct fc_vport *fc_vport;
 213         int ret;
 214
 215         fc_vport = vha->fc_vport;
 216
 217         ql_dbg(ql_dbg_vport, vha, 0xa002,
 218             "%s: change request #3.\n", __func__);
 219         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 220         if (ret != QLA_SUCCESS) {
 221                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 222                     "receiving of RSCN requests: 0x%x.\n", ret);
 223                 return;
 224         } else {
 225                 /* Corresponds to SCR enabled */
 226                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 227         }
 228
 229         vha->flags.online = 1;
 230         if (qla24xx_configure_vhba(vha))
 231                 return;
 232
 233         atomic_set(&vha->vp_state, VP_ACTIVE);
 234         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 235 }
 236
 237 void
 238 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 239 {
 240         scsi_qla_host_t *vha;
 241         struct qla_hw_data *ha = rsp->hw;
 242         int i = 0;
 243         unsigned long flags;
 244
 245         spin_lock_irqsave(&ha->vport_slock, flags);
 246         list_for_each_entry(vha, &ha->vp_list, list) {
 247                 if (vha->vp_idx) {
 248                         atomic_inc(&vha->vref_count);
 249                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 250
 251                         switch (mb[0]) {
 252                         case MBA_LIP_OCCURRED:
 253                         case MBA_LOOP_UP:
 254                         case MBA_LOOP_DOWN:
 255                         case MBA_LIP_RESET:
 256                         case MBA_POINT_TO_POINT:
 257                         case MBA_CHG_IN_CONNECTION:
 258                         case MBA_PORT_UPDATE:
 259                         case MBA_RSCN_UPDATE:
 260                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 261                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 262                                     i, *mb, vha);
 263                                 qla2x00_async_event(vha, rsp, mb);
 264                                 break;
 265                         }
 266
 267                         spin_lock_irqsave(&ha->vport_slock, flags);
 268                         atomic_dec(&vha->vref_count);
 269                 }
 270                 i++;
 271         }
 272         spin_unlock_irqrestore(&ha->vport_slock, flags);
 273 }
 274
 275 int
 276 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 277 {
 278         /*
 279          * Physical port will do most of the abort and recovery work. We can
 280          * just treat it as a loop down
 281          */
 282         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 283                 atomic_set(&vha->loop_state, LOOP_DOWN);
 284                 qla2x00_mark_all_devices_lost(vha, 0);
 285         } else {
 286                 if (!atomic_read(&vha->loop_down_timer))
 287                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 288         }
 289
 290         /*
 291          * To exclusively reset vport, we need to log it out first.  Note: this
 292          * control_vp can fail if ISP reset is already issued, this is
 293          * expected, as the vp would be already logged out due to ISP reset.
 294          */
 295         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 296                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 297
 298         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 299             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 300         return qla24xx_enable_vp(vha);
 301 }
 302
 303 static int
 304 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 305 {
 306         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 307             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 308
 309         qla2x00_do_work(vha);
 310
 311         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 312                 /* VP acquired. complete port configuration */
 313                 ql_dbg(ql_dbg_dpc, vha, 0x4014,
 314                     "Configure VP scheduled.\n");
 315                 qla24xx_configure_vp(vha);
 316                 ql_dbg(ql_dbg_dpc, vha, 0x4015,
 317                     "Configure VP end.\n");
 318                 return 0;
 319         }
 320
 321         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 322                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 323                     "FCPort update scheduled.\n");
 324                 qla2x00_update_fcports(vha);
 325                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 326                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 327                     "FCPort update end.\n");
 328         }
 329
 330         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 331                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 332                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 333
 334                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 335                     "Relogin needed scheduled.\n");
 336                 qla2x00_relogin(vha);
 337                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 338                     "Relogin needed end.\n");
 339         }
 340
 341         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 342             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 343                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 344         }
 345
 346         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 347                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 348                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 349                             "Loop resync scheduled.\n");
 350                         qla2x00_loop_resync(vha);
 351                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 352                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 353                             "Loop resync end.\n");
 354                 }
 355         }
 356
 357         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 358             "Exiting %s.\n", __func__);
 359         return 0;
 360 }
 361
 362 void
 363 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 364 {
 365         int ret;
 366         struct qla_hw_data *ha = vha->hw;
 367         scsi_qla_host_t *vp;
 368         unsigned long flags = 0;
 369
 370         if (vha->vp_idx)
 371                 return;
 372         if (list_empty(&ha->vp_list))
 373                 return;
 374
 375         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 376
 377         if (!(ha->current_topology & ISP_CFG_F))
 378                 return;
 379
 380         spin_lock_irqsave(&ha->vport_slock, flags);
 381         list_for_each_entry(vp, &ha->vp_list, list) {
 382                 if (vp->vp_idx) {
 383                         atomic_inc(&vp->vref_count);
 384                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 385
 386                         ret = qla2x00_do_dpc_vp(vp);
 387
 388                         spin_lock_irqsave(&ha->vport_slock, flags);
 389                         atomic_dec(&vp->vref_count);
 390                 }
 391         }
 392         spin_unlock_irqrestore(&ha->vport_slock, flags);
 393 }
 394
 395 int
 396 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 397 {
 398         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 399         struct qla_hw_data *ha = base_vha->hw;
 400         scsi_qla_host_t *vha;
 401         uint8_t port_name[WWN_SIZE];
 402
 403         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 404                 return VPCERR_UNSUPPORTED;
 405
 406         /* Check up the F/W and H/W support NPIV */
 407         if (!ha->flags.npiv_supported)
 408                 return VPCERR_UNSUPPORTED;
 409
 410         /* Check up whether npiv supported switch presented */
 411         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 412                 return VPCERR_NO_FABRIC_SUPP;
 413
 414         /* Check up unique WWPN */
 415         u64_to_wwn(fc_vport->port_name, port_name);
 416         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 417                 return VPCERR_BAD_WWN;
 418         vha = qla24xx_find_vhost_by_name(ha, port_name);
 419         if (vha)
 420                 return VPCERR_BAD_WWN;
 421
 422         /* Check up max-npiv-supports */
 423         if (ha->num_vhosts > ha->max_npiv_vports) {
 424                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 425                     "num_vhosts %ud is bigger "
 426                     "than max_npiv_vports %ud.\n",
 427                     ha->num_vhosts, ha->max_npiv_vports);
 428                 return VPCERR_UNSUPPORTED;
 429         }
 430         return 0;
 431 }
 432
 433 scsi_qla_host_t *
 434 qla24xx_create_vhost(struct fc_vport *fc_vport)
 435 {
 436         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 437         struct qla_hw_data *ha = base_vha->hw;
 438         scsi_qla_host_t *vha;
 439         struct scsi_host_template *sht = &qla2xxx_driver_template;
 440         struct Scsi_Host *host;
 441
 442         vha = qla2x00_create_host(sht, ha);
 443         if (!vha) {
 444                 ql_log(ql_log_warn, vha, 0xa005,
 445                     "scsi_host_alloc() failed for vport.\n");
 446                 return(NULL);
 447         }
 448
 449         host = vha->host;
 450         fc_vport->dd_data = vha;
 451         /* New host info */
 452         u64_to_wwn(fc_vport->node_name, vha->node_name);
 453         u64_to_wwn(fc_vport->port_name, vha->port_name);
 454
 455         vha->fc_vport = fc_vport;
 456         vha->device_flags = 0;
 457         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 458         if (vha->vp_idx > ha->max_npiv_vports) {
 459                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 460                     "Couldn't allocate vp_id.\n");
 461                 goto create_vhost_failed;
 462         }
 463         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 464
 465         vha->dpc_flags = 0L;
 466
 467         /*
 468          * To fix the issue of processing a parent's RSCN for the vport before
 469          * its SCR is complete.
 470          */
 471         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 472         atomic_set(&vha->loop_state, LOOP_DOWN);
 473         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 474
 475         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 476
 477         vha->req = base_vha->req;
 478         host->can_queue = base_vha->req->length + 128;
 479         host->cmd_per_lun = 3;
 480         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 481                 host->max_cmd_len = 32;
 482         else
 483                 host->max_cmd_len = MAX_CMDSZ;
 484         host->max_channel = MAX_BUSES - 1;
 485         host->max_lun = ql2xmaxlun;
 486         host->unique_id = host->host_no;
 487         host->max_id = ha->max_fibre_devices;
 488         host->transportt = qla2xxx_transport_vport_template;
 489
 490         ql_dbg(ql_dbg_vport, vha, 0xa007,
 491             "Detect vport hba %ld at address = %p.\n",
 492             vha->host_no, vha);
 493
 494         vha->flags.init_done = 1;
 495
 496         mutex_lock(&ha->vport_lock);
 497         set_bit(vha->vp_idx, ha->vp_idx_map);
 498         ha->cur_vport_count++;
 499         mutex_unlock(&ha->vport_lock);
 500
 501         return vha;
 502
 503 create_vhost_failed:
 504         return NULL;
 505 }
 506
 507 static void
 508 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 509 {
 510         struct qla_hw_data *ha = vha->hw;
 511         uint16_t que_id = req->id;
 512
 513         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 514                 sizeof(request_t), req->ring, req->dma);
 515         req->ring = NULL;
 516         req->dma = 0;
 517         if (que_id) {
 518                 ha->req_q_map[que_id] = NULL;
 519                 mutex_lock(&ha->vport_lock);
 520                 clear_bit(que_id, ha->req_qid_map);
 521                 mutex_unlock(&ha->vport_lock);
 522         }
 523         kfree(req);
 524         req = NULL;
 525 }
 526
 527 static void
 528 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 529 {
 530         struct qla_hw_data *ha = vha->hw;
 531         uint16_t que_id = rsp->id;
 532
 533         if (rsp->msix && rsp->msix->have_irq) {
 534                 free_irq(rsp->msix->vector, rsp);
 535                 rsp->msix->have_irq = 0;
 536                 rsp->msix->rsp = NULL;
 537         }
 538         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 539                 sizeof(response_t), rsp->ring, rsp->dma);
 540         rsp->ring = NULL;
 541         rsp->dma = 0;
 542         if (que_id) {
 543                 ha->rsp_q_map[que_id] = NULL;
 544                 mutex_lock(&ha->vport_lock);
 545                 clear_bit(que_id, ha->rsp_qid_map);
 546                 mutex_unlock(&ha->vport_lock);
 547         }
 548         kfree(rsp);
 549         rsp = NULL;
 550 }
 551
 552 int
 553 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 554 {
 555         int ret = -1;
 556
 557         if (req) {
 558                 req->options |= BIT_0;
 559                 ret = qla25xx_init_req_que(vha, req);
 560         }
 561         if (ret == QLA_SUCCESS)
 562                 qla25xx_free_req_que(vha, req);
 563
 564         return ret;
 565 }
 566
 567 static int
 568 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 569 {
 570         int ret = -1;
 571
 572         if (rsp) {
 573                 rsp->options |= BIT_0;
 574                 ret = qla25xx_init_rsp_que(vha, rsp);
 575         }
 576         if (ret == QLA_SUCCESS)
 577                 qla25xx_free_rsp_que(vha, rsp);
 578
 579         return ret;
 580 }
 581
 582 /* Delete all queues for a given vhost */
 583 int
 584 qla25xx_delete_queues(struct scsi_qla_host *vha)
 585 {
 586         int cnt, ret = 0;
 587         struct req_que *req = NULL;
 588         struct rsp_que *rsp = NULL;
 589         struct qla_hw_data *ha = vha->hw;
 590
 591         /* Delete request queues */
 592         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 593                 req = ha->req_q_map[cnt];
 594                 if (req) {
 595                         ret = qla25xx_delete_req_que(vha, req);
 596                         if (ret != QLA_SUCCESS) {
 597                                 ql_log(ql_log_warn, vha, 0x00ea,
 598                                     "Couldn't delete req que %d.\n",
 599                                     req->id);
 600                                 return ret;
 601                         }
 602                 }
 603         }
 604
 605         /* Delete response queues */
 606         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 607                 rsp = ha->rsp_q_map[cnt];
 608                 if (rsp) {
 609                         ret = qla25xx_delete_rsp_que(vha, rsp);
 610                         if (ret != QLA_SUCCESS) {
 611                                 ql_log(ql_log_warn, vha, 0x00eb,
 612                                     "Couldn't delete rsp que %d.\n",
 613                                     rsp->id);
 614                                 return ret;
 615                         }
 616                 }
 617         }
 618         return ret;
 619 }
 620
 621 int
 622 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 623         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 624 {
 625         int ret = 0;
 626         struct req_que *req = NULL;
 627         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 628         uint16_t que_id = 0;
 629         device_reg_t __iomem *reg;
 630         uint32_t cnt;
 631
 632         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 633         if (req == NULL) {
 634                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 635                     "Failed to allocate memory for request queue.\n");
 636                 goto failed;
 637         }
 638
 639         req->length = REQUEST_ENTRY_CNT_24XX;
 640         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 641                         (req->length + 1) * sizeof(request_t),
 642                         &req->dma, GFP_KERNEL);
 643         if (req->ring == NULL) {
 644                 ql_log(ql_log_fatal, base_vha, 0x00da,
 645                     "Failed to allocate memory for request_ring.\n");
 646                 goto que_failed;
 647         }
 648
 649         mutex_lock(&ha->vport_lock);
 650         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 651         if (que_id >= ha->max_req_queues) {
 652                 mutex_unlock(&ha->vport_lock);
 653                 ql_log(ql_log_warn, base_vha, 0x00db,
 654                     "No resources to create additional request queue.\n");
 655                 goto que_failed;
 656         }
 657         set_bit(que_id, ha->req_qid_map);
 658         ha->req_q_map[que_id] = req;
 659         req->rid = rid;
 660         req->vp_idx = vp_idx;
 661         req->qos = qos;
 662
 663         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 664             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 665             que_id, req->rid, req->vp_idx, req->qos);
 666         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 667             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 668             que_id, req->rid, req->vp_idx, req->qos);
 669         if (rsp_que < 0)
 670                 req->rsp = NULL;
 671         else
 672                 req->rsp = ha->rsp_q_map[rsp_que];
 673         /* Use alternate PCI bus number */
 674         if (MSB(req->rid))
 675                 options |= BIT_4;
 676         /* Use alternate PCI devfn */
 677         if (LSB(req->rid))
 678                 options |= BIT_5;
 679         req->options = options;
 680
 681         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 682             "options=0x%x.\n", req->options);
 683         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 684             "options=0x%x.\n", req->options);
 685         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 686                 req->outstanding_cmds[cnt] = NULL;
 687         req->current_outstanding_cmd = 1;
 688
 689         req->ring_ptr = req->ring;
 690         req->ring_index = 0;
 691         req->cnt = req->length;
 692         req->id = que_id;
 693         reg = ISP_QUE_REG(ha, que_id);
 694         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 695         mutex_unlock(&ha->vport_lock);
 696         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 697             "ring_ptr=%p ring_index=%d, "
 698             "cnt=%d id=%d max_q_depth=%d.\n",
 699             req->ring_ptr, req->ring_index,
 700             req->cnt, req->id, req->max_q_depth);
 701         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 702             "ring_ptr=%p ring_index=%d, "
 703             "cnt=%d id=%d max_q_depth=%d.\n",
 704             req->ring_ptr, req->ring_index, req->cnt,
 705             req->id, req->max_q_depth);
 706
 707         ret = qla25xx_init_req_que(base_vha, req);
 708         if (ret != QLA_SUCCESS) {
 709                 ql_log(ql_log_fatal, base_vha, 0x00df,
 710                     "%s failed.\n", __func__);
 711                 mutex_lock(&ha->vport_lock);
 712                 clear_bit(que_id, ha->req_qid_map);
 713                 mutex_unlock(&ha->vport_lock);
 714                 goto que_failed;
 715         }
 716
 717         return req->id;
 718
 719 que_failed:
 720         qla25xx_free_req_que(base_vha, req);
 721 failed:
 722         return 0;
 723 }
 724
 725 static void qla_do_work(struct work_struct *work)
 726 {
 727         unsigned long flags;
 728         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 729         struct scsi_qla_host *vha;
 730         struct qla_hw_data *ha = rsp->hw;
 731
 732         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 733         vha = pci_get_drvdata(ha->pdev);
 734         qla24xx_process_response_queue(vha, rsp);
 735         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 736 }
 737
 738 /* create response queue */
 739 int
 740 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 741         uint8_t vp_idx, uint16_t rid, int req)
 742 {
 743         int ret = 0;
 744         struct rsp_que *rsp = NULL;
 745         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 746         uint16_t que_id = 0;
 747         device_reg_t __iomem *reg;
 748
 749         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 750         if (rsp == NULL) {
 751                 ql_log(ql_log_warn, base_vha, 0x0066,
 752                     "Failed to allocate memory for response queue.\n");
 753                 goto failed;
 754         }
 755
 756         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 757         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 758                         (rsp->length + 1) * sizeof(response_t),
 759                         &rsp->dma, GFP_KERNEL);
 760         if (rsp->ring == NULL) {
 761                 ql_log(ql_log_warn, base_vha, 0x00e1,
 762                     "Failed to allocate memory for response ring.\n");
 763                 goto que_failed;
 764         }
 765
 766         mutex_lock(&ha->vport_lock);
 767         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 768         if (que_id >= ha->max_rsp_queues) {
 769                 mutex_unlock(&ha->vport_lock);
 770                 ql_log(ql_log_warn, base_vha, 0x00e2,
 771                     "No resources to create additional request queue.\n");
 772                 goto que_failed;
 773         }
 774         set_bit(que_id, ha->rsp_qid_map);
 775
 776         if (ha->flags.msix_enabled)
 777                 rsp->msix = &ha->msix_entries[que_id + 1];
 778         else
 779                 ql_log(ql_log_warn, base_vha, 0x00e3,
 780                     "MSIX not enalbled.\n");
 781
 782         ha->rsp_q_map[que_id] = rsp;
 783         rsp->rid = rid;
 784         rsp->vp_idx = vp_idx;
 785         rsp->hw = ha;
 786         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 787             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 788             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 789         /* Use alternate PCI bus number */
 790         if (MSB(rsp->rid))
 791                 options |= BIT_4;
 792         /* Use alternate PCI devfn */
 793         if (LSB(rsp->rid))
 794                 options |= BIT_5;
 795         /* Enable MSIX handshake mode on for uncapable adapters */
 796         if (!IS_MSIX_NACK_CAPABLE(ha))
 797                 options |= BIT_6;
 798
 799         rsp->options = options;
 800         rsp->id = que_id;
 801         reg = ISP_QUE_REG(ha, que_id);
 802         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 803         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 804         mutex_unlock(&ha->vport_lock);
 805         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 806             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 807             rsp->options, rsp->id, rsp->rsp_q_in,
 808             rsp->rsp_q_out);
 809         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 810             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 811             rsp->options, rsp->id, rsp->rsp_q_in,
 812             rsp->rsp_q_out);
 813
 814         ret = qla25xx_request_irq(rsp);
 815         if (ret)
 816                 goto que_failed;
 817
 818         ret = qla25xx_init_rsp_que(base_vha, rsp);
 819         if (ret != QLA_SUCCESS) {
 820                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 821                     "%s failed.\n", __func__);
 822                 mutex_lock(&ha->vport_lock);
 823                 clear_bit(que_id, ha->rsp_qid_map);
 824                 mutex_unlock(&ha->vport_lock);
 825                 goto que_failed;
 826         }
 827         if (req >= 0)
 828                 rsp->req = ha->req_q_map[req];
 829         else
 830                 rsp->req = NULL;
 831
 832         qla2x00_init_response_q_entries(rsp);
 833         if (rsp->hw->wq)
 834                 INIT_WORK(&rsp->q_work, qla_do_work);
 835         return rsp->id;
 836
 837 que_failed:
 838         qla25xx_free_rsp_que(base_vha, rsp);
 839 failed:
 840         return 0;
 841 }