1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2014 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 #include "qla_gbl.h" 9 #include "qla_target.h" 10 11 #include <linux/moduleparam.h> 12 #include <linux/vmalloc.h> 13 #include <linux/slab.h> 14 #include <linux/list.h> 15 16 #include <scsi/scsi_tcq.h> 17 #include <scsi/scsicam.h> 18 #include <linux/delay.h> 19 20 void 21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha) 22 { 23 if (vha->vp_idx && vha->timer_active) { 24 del_timer_sync(&vha->timer); 25 vha->timer_active = 0; 26 } 27 } 28 29 static uint32_t 30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha) 31 { 32 uint32_t vp_id; 33 struct qla_hw_data *ha = vha->hw; 34 unsigned long flags; 35 36 /* Find an empty slot and assign an vp_id */ 37 mutex_lock(&ha->vport_lock); 38 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1); 39 if (vp_id > ha->max_npiv_vports) { 40 ql_dbg(ql_dbg_vport, vha, 0xa000, 41 "vp_id %d is bigger than max-supported %d.\n", 42 vp_id, ha->max_npiv_vports); 43 mutex_unlock(&ha->vport_lock); 44 return vp_id; 45 } 46 47 set_bit(vp_id, ha->vp_idx_map); 48 ha->num_vhosts++; 49 vha->vp_idx = vp_id; 50 51 spin_lock_irqsave(&ha->vport_slock, flags); 52 list_add_tail(&vha->list, &ha->vp_list); 53 54 qlt_update_vp_map(vha, SET_VP_IDX); 55 56 spin_unlock_irqrestore(&ha->vport_slock, flags); 57 58 mutex_unlock(&ha->vport_lock); 59 return vp_id; 60 } 61 62 void 63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 64 { 65 uint16_t vp_id; 66 struct qla_hw_data *ha = vha->hw; 67 unsigned long flags = 0; 68 69 mutex_lock(&ha->vport_lock); 70 /* 71 * Wait for all pending activities to finish before removing vport from 72 * the list. 73 * Lock needs to be held for safe removal from the list (it 74 * ensures no active vp_list traversal while the vport is removed 75 * from the queue) 76 */ 77 wait_event_timeout(vha->vref_waitq, atomic_read(&vha->vref_count), 78 10*HZ); 79 80 spin_lock_irqsave(&ha->vport_slock, flags); 81 if (atomic_read(&vha->vref_count)) { 82 ql_dbg(ql_dbg_vport, vha, 0xfffa, 83 "vha->vref_count=%u timeout\n", vha->vref_count.counter); 84 vha->vref_count = (atomic_t)ATOMIC_INIT(0); 85 } 86 list_del(&vha->list); 87 qlt_update_vp_map(vha, RESET_VP_IDX); 88 spin_unlock_irqrestore(&ha->vport_slock, flags); 89 90 vp_id = vha->vp_idx; 91 ha->num_vhosts--; 92 clear_bit(vp_id, ha->vp_idx_map); 93 94 mutex_unlock(&ha->vport_lock); 95 } 96 97 static scsi_qla_host_t * 98 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name) 99 { 100 scsi_qla_host_t *vha; 101 struct scsi_qla_host *tvha; 102 unsigned long flags; 103 104 spin_lock_irqsave(&ha->vport_slock, flags); 105 /* Locate matching device in database. */ 106 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) { 107 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) { 108 spin_unlock_irqrestore(&ha->vport_slock, flags); 109 return vha; 110 } 111 } 112 spin_unlock_irqrestore(&ha->vport_slock, flags); 113 return NULL; 114 } 115 116 /* 117 * qla2x00_mark_vp_devices_dead 118 * Updates fcport state when device goes offline. 119 * 120 * Input: 121 * ha = adapter block pointer. 122 * fcport = port structure pointer. 123 * 124 * Return: 125 * None. 126 * 127 * Context: 128 */ 129 static void 130 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 131 { 132 /* 133 * !!! NOTE !!! 134 * This function, if called in contexts other than vp create, disable 135 * or delete, please make sure this is synchronized with the 136 * delete thread. 137 */ 138 fc_port_t *fcport; 139 140 list_for_each_entry(fcport, &vha->vp_fcports, list) { 141 ql_dbg(ql_dbg_vport, vha, 0xa001, 142 "Marking port dead, loop_id=0x%04x : %x.\n", 143 fcport->loop_id, fcport->vha->vp_idx); 144 145 qla2x00_mark_device_lost(vha, fcport, 0, 0); 146 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED); 147 } 148 } 149 150 int 151 qla24xx_disable_vp(scsi_qla_host_t *vha) 152 { 153 unsigned long flags; 154 int ret; 155 156 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 157 atomic_set(&vha->loop_state, LOOP_DOWN); 158 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 159 160 /* Remove port id from vp target map */ 161 spin_lock_irqsave(&vha->hw->vport_slock, flags); 162 qlt_update_vp_map(vha, RESET_AL_PA); 163 spin_unlock_irqrestore(&vha->hw->vport_slock, flags); 164 165 qla2x00_mark_vp_devices_dead(vha); 166 atomic_set(&vha->vp_state, VP_FAILED); 167 vha->flags.management_server_logged_in = 0; 168 if (ret == QLA_SUCCESS) { 169 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 170 } else { 171 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 172 return -1; 173 } 174 return 0; 175 } 176 177 int 178 qla24xx_enable_vp(scsi_qla_host_t *vha) 179 { 180 int ret; 181 struct qla_hw_data *ha = vha->hw; 182 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 183 184 /* Check if physical ha port is Up */ 185 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN || 186 atomic_read(&base_vha->loop_state) == LOOP_DEAD || 187 !(ha->current_topology & ISP_CFG_F)) { 188 vha->vp_err_state = VP_ERR_PORTDWN; 189 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 190 goto enable_failed; 191 } 192 193 /* Initialize the new vport unless it is a persistent port */ 194 mutex_lock(&ha->vport_lock); 195 ret = qla24xx_modify_vp_config(vha); 196 mutex_unlock(&ha->vport_lock); 197 198 if (ret != QLA_SUCCESS) { 199 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 200 goto enable_failed; 201 } 202 203 ql_dbg(ql_dbg_taskm, vha, 0x801a, 204 "Virtual port with id: %d - Enabled.\n", vha->vp_idx); 205 return 0; 206 207 enable_failed: 208 ql_dbg(ql_dbg_taskm, vha, 0x801b, 209 "Virtual port with id: %d - Disabled.\n", vha->vp_idx); 210 return 1; 211 } 212 213 static void 214 qla24xx_configure_vp(scsi_qla_host_t *vha) 215 { 216 struct fc_vport *fc_vport; 217 int ret; 218 219 fc_vport = vha->fc_vport; 220 221 ql_dbg(ql_dbg_vport, vha, 0xa002, 222 "%s: change request #3.\n", __func__); 223 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 224 if (ret != QLA_SUCCESS) { 225 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable " 226 "receiving of RSCN requests: 0x%x.\n", ret); 227 return; 228 } else { 229 /* Corresponds to SCR enabled */ 230 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 231 } 232 233 vha->flags.online = 1; 234 if (qla24xx_configure_vhba(vha)) 235 return; 236 237 atomic_set(&vha->vp_state, VP_ACTIVE); 238 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 239 } 240 241 void 242 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb) 243 { 244 scsi_qla_host_t *vha; 245 struct qla_hw_data *ha = rsp->hw; 246 int i = 0; 247 unsigned long flags; 248 249 spin_lock_irqsave(&ha->vport_slock, flags); 250 list_for_each_entry(vha, &ha->vp_list, list) { 251 if (vha->vp_idx) { 252 atomic_inc(&vha->vref_count); 253 spin_unlock_irqrestore(&ha->vport_slock, flags); 254 255 switch (mb[0]) { 256 case MBA_LIP_OCCURRED: 257 case MBA_LOOP_UP: 258 case MBA_LOOP_DOWN: 259 case MBA_LIP_RESET: 260 case MBA_POINT_TO_POINT: 261 case MBA_CHG_IN_CONNECTION: 262 case MBA_PORT_UPDATE: 263 case MBA_RSCN_UPDATE: 264 ql_dbg(ql_dbg_async, vha, 0x5024, 265 "Async_event for VP[%d], mb=0x%x vha=%p.\n", 266 i, *mb, vha); 267 qla2x00_async_event(vha, rsp, mb); 268 break; 269 } 270 271 spin_lock_irqsave(&ha->vport_slock, flags); 272 atomic_dec(&vha->vref_count); 273 wake_up(&vha->vref_waitq); 274 } 275 i++; 276 } 277 spin_unlock_irqrestore(&ha->vport_slock, flags); 278 } 279 280 int 281 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 282 { 283 /* 284 * Physical port will do most of the abort and recovery work. We can 285 * just treat it as a loop down 286 */ 287 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 288 atomic_set(&vha->loop_state, LOOP_DOWN); 289 qla2x00_mark_all_devices_lost(vha, 0); 290 } else { 291 if (!atomic_read(&vha->loop_down_timer)) 292 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 293 } 294 295 /* 296 * To exclusively reset vport, we need to log it out first. Note: this 297 * control_vp can fail if ISP reset is already issued, this is 298 * expected, as the vp would be already logged out due to ISP reset. 299 */ 300 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 301 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 302 303 ql_dbg(ql_dbg_taskm, vha, 0x801d, 304 "Scheduling enable of Vport %d.\n", vha->vp_idx); 305 return qla24xx_enable_vp(vha); 306 } 307 308 static int 309 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 310 { 311 struct qla_hw_data *ha = vha->hw; 312 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 313 314 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012, 315 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags); 316 317 qla2x00_do_work(vha); 318 319 /* Check if Fw is ready to configure VP first */ 320 if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) { 321 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 322 /* VP acquired. complete port configuration */ 323 ql_dbg(ql_dbg_dpc, vha, 0x4014, 324 "Configure VP scheduled.\n"); 325 qla24xx_configure_vp(vha); 326 ql_dbg(ql_dbg_dpc, vha, 0x4015, 327 "Configure VP end.\n"); 328 return 0; 329 } 330 } 331 332 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 333 ql_dbg(ql_dbg_dpc, vha, 0x4016, 334 "FCPort update scheduled.\n"); 335 qla2x00_update_fcports(vha); 336 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 337 ql_dbg(ql_dbg_dpc, vha, 0x4017, 338 "FCPort update end.\n"); 339 } 340 341 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 342 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 343 atomic_read(&vha->loop_state) != LOOP_DOWN) { 344 345 ql_dbg(ql_dbg_dpc, vha, 0x4018, 346 "Relogin needed scheduled.\n"); 347 qla2x00_relogin(vha); 348 ql_dbg(ql_dbg_dpc, vha, 0x4019, 349 "Relogin needed end.\n"); 350 } 351 352 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 353 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 354 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 355 } 356 357 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 358 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 359 ql_dbg(ql_dbg_dpc, vha, 0x401a, 360 "Loop resync scheduled.\n"); 361 qla2x00_loop_resync(vha); 362 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 363 ql_dbg(ql_dbg_dpc, vha, 0x401b, 364 "Loop resync end.\n"); 365 } 366 } 367 368 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c, 369 "Exiting %s.\n", __func__); 370 return 0; 371 } 372 373 void 374 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 375 { 376 struct qla_hw_data *ha = vha->hw; 377 scsi_qla_host_t *vp; 378 unsigned long flags = 0; 379 380 if (vha->vp_idx) 381 return; 382 if (list_empty(&ha->vp_list)) 383 return; 384 385 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 386 387 if (!(ha->current_topology & ISP_CFG_F)) 388 return; 389 390 spin_lock_irqsave(&ha->vport_slock, flags); 391 list_for_each_entry(vp, &ha->vp_list, list) { 392 if (vp->vp_idx) { 393 atomic_inc(&vp->vref_count); 394 spin_unlock_irqrestore(&ha->vport_slock, flags); 395 396 qla2x00_do_dpc_vp(vp); 397 398 spin_lock_irqsave(&ha->vport_slock, flags); 399 atomic_dec(&vp->vref_count); 400 } 401 } 402 spin_unlock_irqrestore(&ha->vport_slock, flags); 403 } 404 405 int 406 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 407 { 408 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 409 struct qla_hw_data *ha = base_vha->hw; 410 scsi_qla_host_t *vha; 411 uint8_t port_name[WWN_SIZE]; 412 413 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 414 return VPCERR_UNSUPPORTED; 415 416 /* Check up the F/W and H/W support NPIV */ 417 if (!ha->flags.npiv_supported) 418 return VPCERR_UNSUPPORTED; 419 420 /* Check up whether npiv supported switch presented */ 421 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 422 return VPCERR_NO_FABRIC_SUPP; 423 424 /* Check up unique WWPN */ 425 u64_to_wwn(fc_vport->port_name, port_name); 426 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 427 return VPCERR_BAD_WWN; 428 vha = qla24xx_find_vhost_by_name(ha, port_name); 429 if (vha) 430 return VPCERR_BAD_WWN; 431 432 /* Check up max-npiv-supports */ 433 if (ha->num_vhosts > ha->max_npiv_vports) { 434 ql_dbg(ql_dbg_vport, vha, 0xa004, 435 "num_vhosts %ud is bigger " 436 "than max_npiv_vports %ud.\n", 437 ha->num_vhosts, ha->max_npiv_vports); 438 return VPCERR_UNSUPPORTED; 439 } 440 return 0; 441 } 442 443 scsi_qla_host_t * 444 qla24xx_create_vhost(struct fc_vport *fc_vport) 445 { 446 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 447 struct qla_hw_data *ha = base_vha->hw; 448 scsi_qla_host_t *vha; 449 struct scsi_host_template *sht = &qla2xxx_driver_template; 450 struct Scsi_Host *host; 451 452 vha = qla2x00_create_host(sht, ha); 453 if (!vha) { 454 ql_log(ql_log_warn, vha, 0xa005, 455 "scsi_host_alloc() failed for vport.\n"); 456 return(NULL); 457 } 458 459 host = vha->host; 460 fc_vport->dd_data = vha; 461 /* New host info */ 462 u64_to_wwn(fc_vport->node_name, vha->node_name); 463 u64_to_wwn(fc_vport->port_name, vha->port_name); 464 465 vha->fc_vport = fc_vport; 466 vha->device_flags = 0; 467 vha->vp_idx = qla24xx_allocate_vp_id(vha); 468 if (vha->vp_idx > ha->max_npiv_vports) { 469 ql_dbg(ql_dbg_vport, vha, 0xa006, 470 "Couldn't allocate vp_id.\n"); 471 goto create_vhost_failed; 472 } 473 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 474 475 vha->dpc_flags = 0L; 476 477 /* 478 * To fix the issue of processing a parent's RSCN for the vport before 479 * its SCR is complete. 480 */ 481 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 482 atomic_set(&vha->loop_state, LOOP_DOWN); 483 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 484 485 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 486 487 vha->req = base_vha->req; 488 host->can_queue = base_vha->req->length + 128; 489 host->cmd_per_lun = 3; 490 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) 491 host->max_cmd_len = 32; 492 else 493 host->max_cmd_len = MAX_CMDSZ; 494 host->max_channel = MAX_BUSES - 1; 495 host->max_lun = ql2xmaxlun; 496 host->unique_id = host->host_no; 497 host->max_id = ha->max_fibre_devices; 498 host->transportt = qla2xxx_transport_vport_template; 499 500 ql_dbg(ql_dbg_vport, vha, 0xa007, 501 "Detect vport hba %ld at address = %p.\n", 502 vha->host_no, vha); 503 504 vha->flags.init_done = 1; 505 506 mutex_lock(&ha->vport_lock); 507 set_bit(vha->vp_idx, ha->vp_idx_map); 508 ha->cur_vport_count++; 509 mutex_unlock(&ha->vport_lock); 510 511 return vha; 512 513 create_vhost_failed: 514 return NULL; 515 } 516 517 static void 518 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 519 { 520 struct qla_hw_data *ha = vha->hw; 521 uint16_t que_id = req->id; 522 523 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 524 sizeof(request_t), req->ring, req->dma); 525 req->ring = NULL; 526 req->dma = 0; 527 if (que_id) { 528 ha->req_q_map[que_id] = NULL; 529 mutex_lock(&ha->vport_lock); 530 clear_bit(que_id, ha->req_qid_map); 531 mutex_unlock(&ha->vport_lock); 532 } 533 kfree(req->outstanding_cmds); 534 kfree(req); 535 req = NULL; 536 } 537 538 static void 539 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 540 { 541 struct qla_hw_data *ha = vha->hw; 542 uint16_t que_id = rsp->id; 543 544 if (rsp->msix && rsp->msix->have_irq) { 545 free_irq(rsp->msix->vector, rsp->msix->handle); 546 rsp->msix->have_irq = 0; 547 rsp->msix->in_use = 0; 548 rsp->msix->handle = NULL; 549 } 550 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 551 sizeof(response_t), rsp->ring, rsp->dma); 552 rsp->ring = NULL; 553 rsp->dma = 0; 554 if (que_id) { 555 ha->rsp_q_map[que_id] = NULL; 556 mutex_lock(&ha->vport_lock); 557 clear_bit(que_id, ha->rsp_qid_map); 558 mutex_unlock(&ha->vport_lock); 559 } 560 kfree(rsp); 561 rsp = NULL; 562 } 563 564 int 565 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 566 { 567 int ret = -1; 568 569 if (req) { 570 req->options |= BIT_0; 571 ret = qla25xx_init_req_que(vha, req); 572 } 573 if (ret == QLA_SUCCESS) 574 qla25xx_free_req_que(vha, req); 575 576 return ret; 577 } 578 579 int 580 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 581 { 582 int ret = -1; 583 584 if (rsp) { 585 rsp->options |= BIT_0; 586 ret = qla25xx_init_rsp_que(vha, rsp); 587 } 588 if (ret == QLA_SUCCESS) 589 qla25xx_free_rsp_que(vha, rsp); 590 591 return ret; 592 } 593 594 /* Delete all queues for a given vhost */ 595 int 596 qla25xx_delete_queues(struct scsi_qla_host *vha) 597 { 598 int cnt, ret = 0; 599 struct req_que *req = NULL; 600 struct rsp_que *rsp = NULL; 601 struct qla_hw_data *ha = vha->hw; 602 struct qla_qpair *qpair, *tqpair; 603 604 if (ql2xmqsupport) { 605 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list, 606 qp_list_elem) 607 qla2xxx_delete_qpair(vha, qpair); 608 } else { 609 /* Delete request queues */ 610 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 611 req = ha->req_q_map[cnt]; 612 if (req && test_bit(cnt, ha->req_qid_map)) { 613 ret = qla25xx_delete_req_que(vha, req); 614 if (ret != QLA_SUCCESS) { 615 ql_log(ql_log_warn, vha, 0x00ea, 616 "Couldn't delete req que %d.\n", 617 req->id); 618 return ret; 619 } 620 } 621 } 622 623 /* Delete response queues */ 624 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 625 rsp = ha->rsp_q_map[cnt]; 626 if (rsp && test_bit(cnt, ha->rsp_qid_map)) { 627 ret = qla25xx_delete_rsp_que(vha, rsp); 628 if (ret != QLA_SUCCESS) { 629 ql_log(ql_log_warn, vha, 0x00eb, 630 "Couldn't delete rsp que %d.\n", 631 rsp->id); 632 return ret; 633 } 634 } 635 } 636 } 637 638 return ret; 639 } 640 641 int 642 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 643 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 644 { 645 int ret = 0; 646 struct req_que *req = NULL; 647 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 648 uint16_t que_id = 0; 649 device_reg_t *reg; 650 uint32_t cnt; 651 652 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 653 if (req == NULL) { 654 ql_log(ql_log_fatal, base_vha, 0x00d9, 655 "Failed to allocate memory for request queue.\n"); 656 goto failed; 657 } 658 659 req->length = REQUEST_ENTRY_CNT_24XX; 660 req->ring = dma_alloc_coherent(&ha->pdev->dev, 661 (req->length + 1) * sizeof(request_t), 662 &req->dma, GFP_KERNEL); 663 if (req->ring == NULL) { 664 ql_log(ql_log_fatal, base_vha, 0x00da, 665 "Failed to allocate memory for request_ring.\n"); 666 goto que_failed; 667 } 668 669 ret = qla2x00_alloc_outstanding_cmds(ha, req); 670 if (ret != QLA_SUCCESS) 671 goto que_failed; 672 673 mutex_lock(&ha->mq_lock); 674 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 675 if (que_id >= ha->max_req_queues) { 676 mutex_unlock(&ha->mq_lock); 677 ql_log(ql_log_warn, base_vha, 0x00db, 678 "No resources to create additional request queue.\n"); 679 goto que_failed; 680 } 681 set_bit(que_id, ha->req_qid_map); 682 ha->req_q_map[que_id] = req; 683 req->rid = rid; 684 req->vp_idx = vp_idx; 685 req->qos = qos; 686 687 ql_dbg(ql_dbg_multiq, base_vha, 0xc002, 688 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 689 que_id, req->rid, req->vp_idx, req->qos); 690 ql_dbg(ql_dbg_init, base_vha, 0x00dc, 691 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 692 que_id, req->rid, req->vp_idx, req->qos); 693 if (rsp_que < 0) 694 req->rsp = NULL; 695 else 696 req->rsp = ha->rsp_q_map[rsp_que]; 697 /* Use alternate PCI bus number */ 698 if (MSB(req->rid)) 699 options |= BIT_4; 700 /* Use alternate PCI devfn */ 701 if (LSB(req->rid)) 702 options |= BIT_5; 703 req->options = options; 704 705 ql_dbg(ql_dbg_multiq, base_vha, 0xc003, 706 "options=0x%x.\n", req->options); 707 ql_dbg(ql_dbg_init, base_vha, 0x00dd, 708 "options=0x%x.\n", req->options); 709 for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) 710 req->outstanding_cmds[cnt] = NULL; 711 req->current_outstanding_cmd = 1; 712 713 req->ring_ptr = req->ring; 714 req->ring_index = 0; 715 req->cnt = req->length; 716 req->id = que_id; 717 reg = ISP_QUE_REG(ha, que_id); 718 req->req_q_in = ®->isp25mq.req_q_in; 719 req->req_q_out = ®->isp25mq.req_q_out; 720 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 721 req->out_ptr = (void *)(req->ring + req->length); 722 mutex_unlock(&ha->mq_lock); 723 ql_dbg(ql_dbg_multiq, base_vha, 0xc004, 724 "ring_ptr=%p ring_index=%d, " 725 "cnt=%d id=%d max_q_depth=%d.\n", 726 req->ring_ptr, req->ring_index, 727 req->cnt, req->id, req->max_q_depth); 728 ql_dbg(ql_dbg_init, base_vha, 0x00de, 729 "ring_ptr=%p ring_index=%d, " 730 "cnt=%d id=%d max_q_depth=%d.\n", 731 req->ring_ptr, req->ring_index, req->cnt, 732 req->id, req->max_q_depth); 733 734 ret = qla25xx_init_req_que(base_vha, req); 735 if (ret != QLA_SUCCESS) { 736 ql_log(ql_log_fatal, base_vha, 0x00df, 737 "%s failed.\n", __func__); 738 mutex_lock(&ha->mq_lock); 739 clear_bit(que_id, ha->req_qid_map); 740 mutex_unlock(&ha->mq_lock); 741 goto que_failed; 742 } 743 744 return req->id; 745 746 que_failed: 747 qla25xx_free_req_que(base_vha, req); 748 failed: 749 return 0; 750 } 751 752 static void qla_do_work(struct work_struct *work) 753 { 754 unsigned long flags; 755 struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work); 756 struct scsi_qla_host *vha; 757 struct qla_hw_data *ha = qpair->hw; 758 759 spin_lock_irqsave(&qpair->qp_lock, flags); 760 vha = pci_get_drvdata(ha->pdev); 761 qla24xx_process_response_queue(vha, qpair->rsp); 762 spin_unlock_irqrestore(&qpair->qp_lock, flags); 763 } 764 765 /* create response queue */ 766 int 767 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 768 uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair) 769 { 770 int ret = 0; 771 struct rsp_que *rsp = NULL; 772 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 773 uint16_t que_id = 0; 774 device_reg_t *reg; 775 776 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 777 if (rsp == NULL) { 778 ql_log(ql_log_warn, base_vha, 0x0066, 779 "Failed to allocate memory for response queue.\n"); 780 goto failed; 781 } 782 783 rsp->length = RESPONSE_ENTRY_CNT_MQ; 784 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 785 (rsp->length + 1) * sizeof(response_t), 786 &rsp->dma, GFP_KERNEL); 787 if (rsp->ring == NULL) { 788 ql_log(ql_log_warn, base_vha, 0x00e1, 789 "Failed to allocate memory for response ring.\n"); 790 goto que_failed; 791 } 792 793 mutex_lock(&ha->mq_lock); 794 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 795 if (que_id >= ha->max_rsp_queues) { 796 mutex_unlock(&ha->mq_lock); 797 ql_log(ql_log_warn, base_vha, 0x00e2, 798 "No resources to create additional request queue.\n"); 799 goto que_failed; 800 } 801 set_bit(que_id, ha->rsp_qid_map); 802 803 rsp->msix = qpair->msix; 804 805 ha->rsp_q_map[que_id] = rsp; 806 rsp->rid = rid; 807 rsp->vp_idx = vp_idx; 808 rsp->hw = ha; 809 ql_dbg(ql_dbg_init, base_vha, 0x00e4, 810 "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n", 811 que_id, rsp->rid, rsp->vp_idx, rsp->hw); 812 /* Use alternate PCI bus number */ 813 if (MSB(rsp->rid)) 814 options |= BIT_4; 815 /* Use alternate PCI devfn */ 816 if (LSB(rsp->rid)) 817 options |= BIT_5; 818 /* Enable MSIX handshake mode on for uncapable adapters */ 819 if (!IS_MSIX_NACK_CAPABLE(ha)) 820 options |= BIT_6; 821 822 /* Set option to indicate response queue creation */ 823 options |= BIT_1; 824 825 rsp->options = options; 826 rsp->id = que_id; 827 reg = ISP_QUE_REG(ha, que_id); 828 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 829 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 830 rsp->in_ptr = (void *)(rsp->ring + rsp->length); 831 mutex_unlock(&ha->mq_lock); 832 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b, 833 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n", 834 rsp->options, rsp->id, rsp->rsp_q_in, 835 rsp->rsp_q_out); 836 ql_dbg(ql_dbg_init, base_vha, 0x00e5, 837 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n", 838 rsp->options, rsp->id, rsp->rsp_q_in, 839 rsp->rsp_q_out); 840 841 ret = qla25xx_request_irq(ha, qpair, qpair->msix, 842 QLA_MSIX_QPAIR_MULTIQ_RSP_Q); 843 if (ret) 844 goto que_failed; 845 846 ret = qla25xx_init_rsp_que(base_vha, rsp); 847 if (ret != QLA_SUCCESS) { 848 ql_log(ql_log_fatal, base_vha, 0x00e7, 849 "%s failed.\n", __func__); 850 mutex_lock(&ha->mq_lock); 851 clear_bit(que_id, ha->rsp_qid_map); 852 mutex_unlock(&ha->mq_lock); 853 goto que_failed; 854 } 855 rsp->req = NULL; 856 857 qla2x00_init_response_q_entries(rsp); 858 if (qpair->hw->wq) 859 INIT_WORK(&qpair->q_work, qla_do_work); 860 return rsp->id; 861 862 que_failed: 863 qla25xx_free_rsp_que(base_vha, rsp); 864 failed: 865 return 0; 866 } 867