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         spin_unlock_irqrestore(&ha->vport_slock, flags);
  54
  55         spin_lock_irqsave(&ha->hardware_lock, flags);
  56         qlt_update_vp_map(vha, SET_VP_IDX);
  57         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  58
  59         mutex_unlock(&ha->vport_lock);
  60         return vp_id;
  61 }
  62
  63 void
  64 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  65 {
  66         uint16_t vp_id;
  67         struct qla_hw_data *ha = vha->hw;
  68         unsigned long flags = 0;
  69
  70         mutex_lock(&ha->vport_lock);
  71         /*
  72          * Wait for all pending activities to finish before removing vport from
  73          * the list.
  74          * Lock needs to be held for safe removal from the list (it
  75          * ensures no active vp_list traversal while the vport is removed
  76          * from the queue)
  77          */
  78         wait_event_timeout(vha->vref_waitq, !atomic_read(&vha->vref_count),
  79             10*HZ);
  80
  81         spin_lock_irqsave(&ha->vport_slock, flags);
  82         if (atomic_read(&vha->vref_count)) {
  83                 ql_dbg(ql_dbg_vport, vha, 0xfffa,
  84                     "vha->vref_count=%u timeout\n", vha->vref_count.counter);
  85                 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
  86         }
  87         list_del(&vha->list);
  88         qlt_update_vp_map(vha, RESET_VP_IDX);
  89         spin_unlock_irqrestore(&ha->vport_slock, flags);
  90
  91         vp_id = vha->vp_idx;
  92         ha->num_vhosts--;
  93         clear_bit(vp_id, ha->vp_idx_map);
  94
  95         mutex_unlock(&ha->vport_lock);
  96 }
  97
  98 static scsi_qla_host_t *
  99 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
 100 {
 101         scsi_qla_host_t *vha;
 102         struct scsi_qla_host *tvha;
 103         unsigned long flags;
 104
 105         spin_lock_irqsave(&ha->vport_slock, flags);
 106         /* Locate matching device in database. */
 107         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 108                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 109                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 110                         return vha;
 111                 }
 112         }
 113         spin_unlock_irqrestore(&ha->vport_slock, flags);
 114         return NULL;
 115 }
 116
 117 /*
 118  * qla2x00_mark_vp_devices_dead
 119  *      Updates fcport state when device goes offline.
 120  *
 121  * Input:
 122  *      ha = adapter block pointer.
 123  *      fcport = port structure pointer.
 124  *
 125  * Return:
 126  *      None.
 127  *
 128  * Context:
 129  */
 130 static void
 131 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 132 {
 133         /*
 134          * !!! NOTE !!!
 135          * This function, if called in contexts other than vp create, disable
 136          * or delete, please make sure this is synchronized with the
 137          * delete thread.
 138          */
 139         fc_port_t *fcport;
 140
 141         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 142                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 143                     "Marking port dead, loop_id=0x%04x : %x.\n",
 144                     fcport->loop_id, fcport->vha->vp_idx);
 145
 146                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 147                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 148         }
 149 }
 150
 151 int
 152 qla24xx_disable_vp(scsi_qla_host_t *vha)
 153 {
 154         unsigned long flags;
 155         int ret;
 156
 157         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 158         atomic_set(&vha->loop_state, LOOP_DOWN);
 159         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 160
 161         /* Remove port id from vp target map */
 162         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 163         qlt_update_vp_map(vha, RESET_AL_PA);
 164         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 165
 166         qla2x00_mark_vp_devices_dead(vha);
 167         atomic_set(&vha->vp_state, VP_FAILED);
 168         vha->flags.management_server_logged_in = 0;
 169         if (ret == QLA_SUCCESS) {
 170                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 171         } else {
 172                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 173                 return -1;
 174         }
 175         return 0;
 176 }
 177
 178 int
 179 qla24xx_enable_vp(scsi_qla_host_t *vha)
 180 {
 181         int ret;
 182         struct qla_hw_data *ha = vha->hw;
 183         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 184
 185         /* Check if physical ha port is Up */
 186         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 187                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 188                 !(ha->current_topology & ISP_CFG_F)) {
 189                 vha->vp_err_state =  VP_ERR_PORTDWN;
 190                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 191                 ql_dbg(ql_dbg_taskm, vha, 0x800b,
 192                     "%s skip enable. loop_state %x topo %x\n",
 193                     __func__, base_vha->loop_state.counter,
 194                     ha->current_topology);
 195
 196                 goto enable_failed;
 197         }
 198
 199         /* Initialize the new vport unless it is a persistent port */
 200         mutex_lock(&ha->vport_lock);
 201         ret = qla24xx_modify_vp_config(vha);
 202         mutex_unlock(&ha->vport_lock);
 203
 204         if (ret != QLA_SUCCESS) {
 205                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 206                 goto enable_failed;
 207         }
 208
 209         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 210             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 211         return 0;
 212
 213 enable_failed:
 214         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 215             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 216         return 1;
 217 }
 218
 219 static void
 220 qla24xx_configure_vp(scsi_qla_host_t *vha)
 221 {
 222         struct fc_vport *fc_vport;
 223         int ret;
 224
 225         fc_vport = vha->fc_vport;
 226
 227         ql_dbg(ql_dbg_vport, vha, 0xa002,
 228             "%s: change request #3.\n", __func__);
 229         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 230         if (ret != QLA_SUCCESS) {
 231                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 232                     "receiving of RSCN requests: 0x%x.\n", ret);
 233                 return;
 234         } else {
 235                 /* Corresponds to SCR enabled */
 236                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 237         }
 238
 239         vha->flags.online = 1;
 240         if (qla24xx_configure_vhba(vha))
 241                 return;
 242
 243         atomic_set(&vha->vp_state, VP_ACTIVE);
 244         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 245 }
 246
 247 void
 248 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 249 {
 250         scsi_qla_host_t *vha;
 251         struct qla_hw_data *ha = rsp->hw;
 252         int i = 0;
 253         unsigned long flags;
 254
 255         spin_lock_irqsave(&ha->vport_slock, flags);
 256         list_for_each_entry(vha, &ha->vp_list, list) {
 257                 if (vha->vp_idx) {
 258                         atomic_inc(&vha->vref_count);
 259                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 260
 261                         switch (mb[0]) {
 262                         case MBA_LIP_OCCURRED:
 263                         case MBA_LOOP_UP:
 264                         case MBA_LOOP_DOWN:
 265                         case MBA_LIP_RESET:
 266                         case MBA_POINT_TO_POINT:
 267                         case MBA_CHG_IN_CONNECTION:
 268                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 269                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 270                                     i, *mb, vha);
 271                                 qla2x00_async_event(vha, rsp, mb);
 272                                 break;
 273                         case MBA_PORT_UPDATE:
 274                         case MBA_RSCN_UPDATE:
 275                                 if ((mb[3] & 0xff) == vha->vp_idx) {
 276                                         ql_dbg(ql_dbg_async, vha, 0x5024,
 277                                             "Async_event for VP[%d], mb=0x%x vha=%p\n",
 278                                             i, *mb, vha);
 279                                         qla2x00_async_event(vha, rsp, mb);
 280                                 }
 281                                 break;
 282                         }
 283
 284                         spin_lock_irqsave(&ha->vport_slock, flags);
 285                         atomic_dec(&vha->vref_count);
 286                         wake_up(&vha->vref_waitq);
 287                 }
 288                 i++;
 289         }
 290         spin_unlock_irqrestore(&ha->vport_slock, flags);
 291 }
 292
 293 int
 294 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 295 {
 296         /*
 297          * Physical port will do most of the abort and recovery work. We can
 298          * just treat it as a loop down
 299          */
 300         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 301                 atomic_set(&vha->loop_state, LOOP_DOWN);
 302                 qla2x00_mark_all_devices_lost(vha, 0);
 303         } else {
 304                 if (!atomic_read(&vha->loop_down_timer))
 305                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 306         }
 307
 308         /*
 309          * To exclusively reset vport, we need to log it out first.  Note: this
 310          * control_vp can fail if ISP reset is already issued, this is
 311          * expected, as the vp would be already logged out due to ISP reset.
 312          */
 313         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 314                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 315
 316         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 317             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 318         return qla24xx_enable_vp(vha);
 319 }
 320
 321 static int
 322 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 323 {
 324         struct qla_hw_data *ha = vha->hw;
 325         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 326
 327         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 328             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 329
 330         /* Check if Fw is ready to configure VP first */
 331         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 332                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 333                         /* VP acquired. complete port configuration */
 334                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 335                             "Configure VP scheduled.\n");
 336                         qla24xx_configure_vp(vha);
 337                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 338                             "Configure VP end.\n");
 339                         return 0;
 340                 }
 341         }
 342
 343         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 344                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 345                     "FCPort update scheduled.\n");
 346                 qla2x00_update_fcports(vha);
 347                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 348                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 349                     "FCPort update end.\n");
 350         }
 351
 352         if (test_bit(RELOGIN_NEEDED, &vha->dpc_flags) &&
 353             !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 354             atomic_read(&vha->loop_state) != LOOP_DOWN) {
 355
 356                 if (!vha->relogin_jif ||
 357                     time_after_eq(jiffies, vha->relogin_jif)) {
 358                         vha->relogin_jif = jiffies + HZ;
 359                         clear_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 360
 361                         ql_dbg(ql_dbg_dpc, vha, 0x4018,
 362                             "Relogin needed scheduled.\n");
 363                         qla24xx_post_relogin_work(vha);
 364                 }
 365         }
 366
 367         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 368             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 369                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 370         }
 371
 372         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 373                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 374                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 375                             "Loop resync scheduled.\n");
 376                         qla2x00_loop_resync(vha);
 377                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 378                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 379                             "Loop resync end.\n");
 380                 }
 381         }
 382
 383         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 384             "Exiting %s.\n", __func__);
 385         return 0;
 386 }
 387
 388 void
 389 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 390 {
 391         struct qla_hw_data *ha = vha->hw;
 392         scsi_qla_host_t *vp;
 393         unsigned long flags = 0;
 394
 395         if (vha->vp_idx)
 396                 return;
 397         if (list_empty(&ha->vp_list))
 398                 return;
 399
 400         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 401
 402         if (!(ha->current_topology & ISP_CFG_F))
 403                 return;
 404
 405         spin_lock_irqsave(&ha->vport_slock, flags);
 406         list_for_each_entry(vp, &ha->vp_list, list) {
 407                 if (vp->vp_idx) {
 408                         atomic_inc(&vp->vref_count);
 409                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 410
 411                         qla2x00_do_dpc_vp(vp);
 412
 413                         spin_lock_irqsave(&ha->vport_slock, flags);
 414                         atomic_dec(&vp->vref_count);
 415                 }
 416         }
 417         spin_unlock_irqrestore(&ha->vport_slock, flags);
 418 }
 419
 420 int
 421 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 422 {
 423         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 424         struct qla_hw_data *ha = base_vha->hw;
 425         scsi_qla_host_t *vha;
 426         uint8_t port_name[WWN_SIZE];
 427
 428         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 429                 return VPCERR_UNSUPPORTED;
 430
 431         /* Check up the F/W and H/W support NPIV */
 432         if (!ha->flags.npiv_supported)
 433                 return VPCERR_UNSUPPORTED;
 434
 435         /* Check up whether npiv supported switch presented */
 436         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 437                 return VPCERR_NO_FABRIC_SUPP;
 438
 439         /* Check up unique WWPN */
 440         u64_to_wwn(fc_vport->port_name, port_name);
 441         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 442                 return VPCERR_BAD_WWN;
 443         vha = qla24xx_find_vhost_by_name(ha, port_name);
 444         if (vha)
 445                 return VPCERR_BAD_WWN;
 446
 447         /* Check up max-npiv-supports */
 448         if (ha->num_vhosts > ha->max_npiv_vports) {
 449                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 450                     "num_vhosts %ud is bigger "
 451                     "than max_npiv_vports %ud.\n",
 452                     ha->num_vhosts, ha->max_npiv_vports);
 453                 return VPCERR_UNSUPPORTED;
 454         }
 455         return 0;
 456 }
 457
 458 scsi_qla_host_t *
 459 qla24xx_create_vhost(struct fc_vport *fc_vport)
 460 {
 461         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 462         struct qla_hw_data *ha = base_vha->hw;
 463         scsi_qla_host_t *vha;
 464         struct scsi_host_template *sht = &qla2xxx_driver_template;
 465         struct Scsi_Host *host;
 466
 467         vha = qla2x00_create_host(sht, ha);
 468         if (!vha) {
 469                 ql_log(ql_log_warn, vha, 0xa005,
 470                     "scsi_host_alloc() failed for vport.\n");
 471                 return(NULL);
 472         }
 473
 474         host = vha->host;
 475         fc_vport->dd_data = vha;
 476         /* New host info */
 477         u64_to_wwn(fc_vport->node_name, vha->node_name);
 478         u64_to_wwn(fc_vport->port_name, vha->port_name);
 479
 480         vha->fc_vport = fc_vport;
 481         vha->device_flags = 0;
 482         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 483         if (vha->vp_idx > ha->max_npiv_vports) {
 484                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 485                     "Couldn't allocate vp_id.\n");
 486                 goto create_vhost_failed;
 487         }
 488         vha->mgmt_svr_loop_id = NPH_MGMT_SERVER;
 489
 490         vha->dpc_flags = 0L;
 491
 492         /*
 493          * To fix the issue of processing a parent's RSCN for the vport before
 494          * its SCR is complete.
 495          */
 496         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 497         atomic_set(&vha->loop_state, LOOP_DOWN);
 498         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 499
 500         qla2x00_start_timer(vha, WATCH_INTERVAL);
 501
 502         vha->req = base_vha->req;
 503         host->can_queue = base_vha->req->length + 128;
 504         host->cmd_per_lun = 3;
 505         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 506                 host->max_cmd_len = 32;
 507         else
 508                 host->max_cmd_len = MAX_CMDSZ;
 509         host->max_channel = MAX_BUSES - 1;
 510         host->max_lun = ql2xmaxlun;
 511         host->unique_id = host->host_no;
 512         host->max_id = ha->max_fibre_devices;
 513         host->transportt = qla2xxx_transport_vport_template;
 514
 515         ql_dbg(ql_dbg_vport, vha, 0xa007,
 516             "Detect vport hba %ld at address = %p.\n",
 517             vha->host_no, vha);
 518
 519         vha->flags.init_done = 1;
 520
 521         mutex_lock(&ha->vport_lock);
 522         set_bit(vha->vp_idx, ha->vp_idx_map);
 523         ha->cur_vport_count++;
 524         mutex_unlock(&ha->vport_lock);
 525
 526         return vha;
 527
 528 create_vhost_failed:
 529         return NULL;
 530 }
 531
 532 static void
 533 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 534 {
 535         struct qla_hw_data *ha = vha->hw;
 536         uint16_t que_id = req->id;
 537
 538         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 539                 sizeof(request_t), req->ring, req->dma);
 540         req->ring = NULL;
 541         req->dma = 0;
 542         if (que_id) {
 543                 ha->req_q_map[que_id] = NULL;
 544                 mutex_lock(&ha->vport_lock);
 545                 clear_bit(que_id, ha->req_qid_map);
 546                 mutex_unlock(&ha->vport_lock);
 547         }
 548         kfree(req->outstanding_cmds);
 549         kfree(req);
 550         req = NULL;
 551 }
 552
 553 static void
 554 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 555 {
 556         struct qla_hw_data *ha = vha->hw;
 557         uint16_t que_id = rsp->id;
 558
 559         if (rsp->msix && rsp->msix->have_irq) {
 560                 free_irq(rsp->msix->vector, rsp->msix->handle);
 561                 rsp->msix->have_irq = 0;
 562                 rsp->msix->in_use = 0;
 563                 rsp->msix->handle = NULL;
 564         }
 565         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 566                 sizeof(response_t), rsp->ring, rsp->dma);
 567         rsp->ring = NULL;
 568         rsp->dma = 0;
 569         if (que_id) {
 570                 ha->rsp_q_map[que_id] = NULL;
 571                 mutex_lock(&ha->vport_lock);
 572                 clear_bit(que_id, ha->rsp_qid_map);
 573                 mutex_unlock(&ha->vport_lock);
 574         }
 575         kfree(rsp);
 576         rsp = NULL;
 577 }
 578
 579 int
 580 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 581 {
 582         int ret = QLA_SUCCESS;
 583
 584         if (req && vha->flags.qpairs_req_created) {
 585                 req->options |= BIT_0;
 586                 ret = qla25xx_init_req_que(vha, req);
 587                 if (ret != QLA_SUCCESS)
 588                         return QLA_FUNCTION_FAILED;
 589
 590                 qla25xx_free_req_que(vha, req);
 591         }
 592
 593         return ret;
 594 }
 595
 596 int
 597 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 598 {
 599         int ret = QLA_SUCCESS;
 600
 601         if (rsp && vha->flags.qpairs_rsp_created) {
 602                 rsp->options |= BIT_0;
 603                 ret = qla25xx_init_rsp_que(vha, rsp);
 604                 if (ret != QLA_SUCCESS)
 605                         return QLA_FUNCTION_FAILED;
 606
 607                 qla25xx_free_rsp_que(vha, rsp);
 608         }
 609
 610         return ret;
 611 }
 612
 613 /* Delete all queues for a given vhost */
 614 int
 615 qla25xx_delete_queues(struct scsi_qla_host *vha)
 616 {
 617         int cnt, ret = 0;
 618         struct req_que *req = NULL;
 619         struct rsp_que *rsp = NULL;
 620         struct qla_hw_data *ha = vha->hw;
 621         struct qla_qpair *qpair, *tqpair;
 622
 623         if (ql2xmqsupport || ql2xnvmeenable) {
 624                 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
 625                     qp_list_elem)
 626                         qla2xxx_delete_qpair(vha, qpair);
 627         } else {
 628                 /* Delete request queues */
 629                 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 630                         req = ha->req_q_map[cnt];
 631                         if (req && test_bit(cnt, ha->req_qid_map)) {
 632                                 ret = qla25xx_delete_req_que(vha, req);
 633                                 if (ret != QLA_SUCCESS) {
 634                                         ql_log(ql_log_warn, vha, 0x00ea,
 635                                             "Couldn't delete req que %d.\n",
 636                                             req->id);
 637                                         return ret;
 638                                 }
 639                         }
 640                 }
 641
 642                 /* Delete response queues */
 643                 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 644                         rsp = ha->rsp_q_map[cnt];
 645                         if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
 646                                 ret = qla25xx_delete_rsp_que(vha, rsp);
 647                                 if (ret != QLA_SUCCESS) {
 648                                         ql_log(ql_log_warn, vha, 0x00eb,
 649                                             "Couldn't delete rsp que %d.\n",
 650                                             rsp->id);
 651                                         return ret;
 652                                 }
 653                         }
 654                 }
 655         }
 656
 657         return ret;
 658 }
 659
 660 int
 661 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 662     uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos, bool startqp)
 663 {
 664         int ret = 0;
 665         struct req_que *req = NULL;
 666         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 667         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 668         uint16_t que_id = 0;
 669         device_reg_t *reg;
 670         uint32_t cnt;
 671
 672         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 673         if (req == NULL) {
 674                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 675                     "Failed to allocate memory for request queue.\n");
 676                 goto failed;
 677         }
 678
 679         req->length = REQUEST_ENTRY_CNT_24XX;
 680         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 681                         (req->length + 1) * sizeof(request_t),
 682                         &req->dma, GFP_KERNEL);
 683         if (req->ring == NULL) {
 684                 ql_log(ql_log_fatal, base_vha, 0x00da,
 685                     "Failed to allocate memory for request_ring.\n");
 686                 goto que_failed;
 687         }
 688
 689         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 690         if (ret != QLA_SUCCESS)
 691                 goto que_failed;
 692
 693         mutex_lock(&ha->mq_lock);
 694         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 695         if (que_id >= ha->max_req_queues) {
 696                 mutex_unlock(&ha->mq_lock);
 697                 ql_log(ql_log_warn, base_vha, 0x00db,
 698                     "No resources to create additional request queue.\n");
 699                 goto que_failed;
 700         }
 701         set_bit(que_id, ha->req_qid_map);
 702         ha->req_q_map[que_id] = req;
 703         req->rid = rid;
 704         req->vp_idx = vp_idx;
 705         req->qos = qos;
 706
 707         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 708             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 709             que_id, req->rid, req->vp_idx, req->qos);
 710         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 711             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 712             que_id, req->rid, req->vp_idx, req->qos);
 713         if (rsp_que < 0)
 714                 req->rsp = NULL;
 715         else
 716                 req->rsp = ha->rsp_q_map[rsp_que];
 717         /* Use alternate PCI bus number */
 718         if (MSB(req->rid))
 719                 options |= BIT_4;
 720         /* Use alternate PCI devfn */
 721         if (LSB(req->rid))
 722                 options |= BIT_5;
 723         req->options = options;
 724
 725         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 726             "options=0x%x.\n", req->options);
 727         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 728             "options=0x%x.\n", req->options);
 729         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 730                 req->outstanding_cmds[cnt] = NULL;
 731         req->current_outstanding_cmd = 1;
 732
 733         req->ring_ptr = req->ring;
 734         req->ring_index = 0;
 735         req->cnt = req->length;
 736         req->id = que_id;
 737         reg = ISP_QUE_REG(ha, que_id);
 738         req->req_q_in = &reg->isp25mq.req_q_in;
 739         req->req_q_out = &reg->isp25mq.req_q_out;
 740         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 741         req->out_ptr = (void *)(req->ring + req->length);
 742         mutex_unlock(&ha->mq_lock);
 743         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 744             "ring_ptr=%p ring_index=%d, "
 745             "cnt=%d id=%d max_q_depth=%d.\n",
 746             req->ring_ptr, req->ring_index,
 747             req->cnt, req->id, req->max_q_depth);
 748         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 749             "ring_ptr=%p ring_index=%d, "
 750             "cnt=%d id=%d max_q_depth=%d.\n",
 751             req->ring_ptr, req->ring_index, req->cnt,
 752             req->id, req->max_q_depth);
 753
 754         if (startqp) {
 755                 ret = qla25xx_init_req_que(base_vha, req);
 756                 if (ret != QLA_SUCCESS) {
 757                         ql_log(ql_log_fatal, base_vha, 0x00df,
 758                             "%s failed.\n", __func__);
 759                         mutex_lock(&ha->mq_lock);
 760                         clear_bit(que_id, ha->req_qid_map);
 761                         mutex_unlock(&ha->mq_lock);
 762                         goto que_failed;
 763                 }
 764                 vha->flags.qpairs_req_created = 1;
 765         }
 766
 767         return req->id;
 768
 769 que_failed:
 770         qla25xx_free_req_que(base_vha, req);
 771 failed:
 772         return 0;
 773 }
 774
 775 static void qla_do_work(struct work_struct *work)
 776 {
 777         unsigned long flags;
 778         struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
 779         struct scsi_qla_host *vha;
 780         struct qla_hw_data *ha = qpair->hw;
 781
 782         spin_lock_irqsave(&qpair->qp_lock, flags);
 783         vha = pci_get_drvdata(ha->pdev);
 784         qla24xx_process_response_queue(vha, qpair->rsp);
 785         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 786
 787 }
 788
 789 /* create response queue */
 790 int
 791 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 792     uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair, bool startqp)
 793 {
 794         int ret = 0;
 795         struct rsp_que *rsp = NULL;
 796         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 797         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 798         uint16_t que_id = 0;
 799         device_reg_t *reg;
 800
 801         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 802         if (rsp == NULL) {
 803                 ql_log(ql_log_warn, base_vha, 0x0066,
 804                     "Failed to allocate memory for response queue.\n");
 805                 goto failed;
 806         }
 807
 808         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 809         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 810                         (rsp->length + 1) * sizeof(response_t),
 811                         &rsp->dma, GFP_KERNEL);
 812         if (rsp->ring == NULL) {
 813                 ql_log(ql_log_warn, base_vha, 0x00e1,
 814                     "Failed to allocate memory for response ring.\n");
 815                 goto que_failed;
 816         }
 817
 818         mutex_lock(&ha->mq_lock);
 819         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 820         if (que_id >= ha->max_rsp_queues) {
 821                 mutex_unlock(&ha->mq_lock);
 822                 ql_log(ql_log_warn, base_vha, 0x00e2,
 823                     "No resources to create additional request queue.\n");
 824                 goto que_failed;
 825         }
 826         set_bit(que_id, ha->rsp_qid_map);
 827
 828         rsp->msix = qpair->msix;
 829
 830         ha->rsp_q_map[que_id] = rsp;
 831         rsp->rid = rid;
 832         rsp->vp_idx = vp_idx;
 833         rsp->hw = ha;
 834         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 835             "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 836             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 837         /* Use alternate PCI bus number */
 838         if (MSB(rsp->rid))
 839                 options |= BIT_4;
 840         /* Use alternate PCI devfn */
 841         if (LSB(rsp->rid))
 842                 options |= BIT_5;
 843         /* Enable MSIX handshake mode on for uncapable adapters */
 844         if (!IS_MSIX_NACK_CAPABLE(ha))
 845                 options |= BIT_6;
 846
 847         /* Set option to indicate response queue creation */
 848         options |= BIT_1;
 849
 850         rsp->options = options;
 851         rsp->id = que_id;
 852         reg = ISP_QUE_REG(ha, que_id);
 853         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 854         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 855         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 856         mutex_unlock(&ha->mq_lock);
 857         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 858             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 859             rsp->options, rsp->id, rsp->rsp_q_in,
 860             rsp->rsp_q_out);
 861         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 862             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 863             rsp->options, rsp->id, rsp->rsp_q_in,
 864             rsp->rsp_q_out);
 865
 866         ret = qla25xx_request_irq(ha, qpair, qpair->msix,
 867             QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
 868         if (ret)
 869                 goto que_failed;
 870
 871         if (startqp) {
 872                 ret = qla25xx_init_rsp_que(base_vha, rsp);
 873                 if (ret != QLA_SUCCESS) {
 874                         ql_log(ql_log_fatal, base_vha, 0x00e7,
 875                             "%s failed.\n", __func__);
 876                         mutex_lock(&ha->mq_lock);
 877                         clear_bit(que_id, ha->rsp_qid_map);
 878                         mutex_unlock(&ha->mq_lock);
 879                         goto que_failed;
 880                 }
 881                 vha->flags.qpairs_rsp_created = 1;
 882         }
 883         rsp->req = NULL;
 884
 885         qla2x00_init_response_q_entries(rsp);
 886         if (qpair->hw->wq)
 887                 INIT_WORK(&qpair->q_work, qla_do_work);
 888         return rsp->id;
 889
 890 que_failed:
 891         qla25xx_free_rsp_que(base_vha, rsp);
 892 failed:
 893         return 0;
 894 }
 895
 896 static void qla_ctrlvp_sp_done(void *s, int res)
 897 {
 898         struct srb *sp = s;
 899
 900         complete(&sp->comp);
 901         /* don't free sp here. Let the caller do the free */
 902 }
 903
 904 /**
 905  * qla24xx_control_vp() - Enable a virtual port for given host
 906  * @vha:        adapter block pointer
 907  * @cmd:        command type to be sent for enable virtual port
 908  *
 909  * Return:      qla2xxx local function return status code.
 910  */
 911 int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
 912 {
 913         int rval = QLA_MEMORY_ALLOC_FAILED;
 914         struct qla_hw_data *ha = vha->hw;
 915         int     vp_index = vha->vp_idx;
 916         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 917         srb_t *sp;
 918
 919         ql_dbg(ql_dbg_vport, vha, 0x10c1,
 920             "Entered %s cmd %x index %d.\n", __func__, cmd, vp_index);
 921
 922         if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
 923                 return QLA_PARAMETER_ERROR;
 924
 925         sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL);
 926         if (!sp)
 927                 goto done;
 928
 929         sp->type = SRB_CTRL_VP;
 930         sp->name = "ctrl_vp";
 931         sp->done = qla_ctrlvp_sp_done;
 932         sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
 933         qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
 934         sp->u.iocb_cmd.u.ctrlvp.cmd = cmd;
 935         sp->u.iocb_cmd.u.ctrlvp.vp_index = vp_index;
 936
 937         rval = qla2x00_start_sp(sp);
 938         if (rval != QLA_SUCCESS) {
 939                 ql_dbg(ql_dbg_async, vha, 0xffff,
 940                     "%s: %s Failed submission. %x.\n",
 941                     __func__, sp->name, rval);
 942                 goto done_free_sp;
 943         }
 944
 945         ql_dbg(ql_dbg_vport, vha, 0x113f, "%s hndl %x submitted\n",
 946             sp->name, sp->handle);
 947
 948         wait_for_completion(&sp->comp);
 949         rval = sp->rc;
 950         switch (rval) {
 951         case QLA_FUNCTION_TIMEOUT:
 952                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Timeout. %x.\n",
 953                     __func__, sp->name, rval);
 954                 break;
 955         case QLA_SUCCESS:
 956                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s done.\n",
 957                     __func__, sp->name);
 958                 goto done_free_sp;
 959         default:
 960                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Failed. %x.\n",
 961                     __func__, sp->name, rval);
 962                 goto done_free_sp;
 963         }
 964 done:
 965         return rval;
 966
 967 done_free_sp:
 968         sp->free(sp);
 969         return rval;
 970 }