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 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 unsigned long flags; 153 int ret; 154 155 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 156 atomic_set(&vha->loop_state, LOOP_DOWN); 157 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 158 159 /* Remove port id from vp target map */ 160 spin_lock_irqsave(&vha->hw->vport_slock, flags); 161 qlt_update_vp_map(vha, RESET_AL_PA); 162 spin_unlock_irqrestore(&vha->hw->vport_slock, flags); 163 164 qla2x00_mark_vp_devices_dead(vha); 165 atomic_set(&vha->vp_state, VP_FAILED); 166 vha->flags.management_server_logged_in = 0; 167 if (ret == QLA_SUCCESS) { 168 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 169 } else { 170 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 171 return -1; 172 } 173 return 0; 174 } 175 176 int 177 qla24xx_enable_vp(scsi_qla_host_t *vha) 178 { 179 int ret; 180 struct qla_hw_data *ha = vha->hw; 181 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 182 183 /* Check if physical ha port is Up */ 184 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN || 185 atomic_read(&base_vha->loop_state) == LOOP_DEAD || 186 !(ha->current_topology & ISP_CFG_F)) { 187 vha->vp_err_state = VP_ERR_PORTDWN; 188 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 189 goto enable_failed; 190 } 191 192 /* Initialize the new vport unless it is a persistent port */ 193 mutex_lock(&ha->vport_lock); 194 ret = qla24xx_modify_vp_config(vha); 195 mutex_unlock(&ha->vport_lock); 196 197 if (ret != QLA_SUCCESS) { 198 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 199 goto enable_failed; 200 } 201 202 ql_dbg(ql_dbg_taskm, vha, 0x801a, 203 "Virtual port with id: %d - Enabled.\n", vha->vp_idx); 204 return 0; 205 206 enable_failed: 207 ql_dbg(ql_dbg_taskm, vha, 0x801b, 208 "Virtual port with id: %d - Disabled.\n", vha->vp_idx); 209 return 1; 210 } 211 212 static void 213 qla24xx_configure_vp(scsi_qla_host_t *vha) 214 { 215 struct fc_vport *fc_vport; 216 int ret; 217 218 fc_vport = vha->fc_vport; 219 220 ql_dbg(ql_dbg_vport, vha, 0xa002, 221 "%s: change request #3.\n", __func__); 222 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 223 if (ret != QLA_SUCCESS) { 224 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable " 225 "receiving of RSCN requests: 0x%x.\n", ret); 226 return; 227 } else { 228 /* Corresponds to SCR enabled */ 229 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 230 } 231 232 vha->flags.online = 1; 233 if (qla24xx_configure_vhba(vha)) 234 return; 235 236 atomic_set(&vha->vp_state, VP_ACTIVE); 237 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 238 } 239 240 void 241 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb) 242 { 243 scsi_qla_host_t *vha; 244 struct qla_hw_data *ha = rsp->hw; 245 int i = 0; 246 unsigned long flags; 247 248 spin_lock_irqsave(&ha->vport_slock, flags); 249 list_for_each_entry(vha, &ha->vp_list, list) { 250 if (vha->vp_idx) { 251 atomic_inc(&vha->vref_count); 252 spin_unlock_irqrestore(&ha->vport_slock, flags); 253 254 switch (mb[0]) { 255 case MBA_LIP_OCCURRED: 256 case MBA_LOOP_UP: 257 case MBA_LOOP_DOWN: 258 case MBA_LIP_RESET: 259 case MBA_POINT_TO_POINT: 260 case MBA_CHG_IN_CONNECTION: 261 case MBA_PORT_UPDATE: 262 case MBA_RSCN_UPDATE: 263 ql_dbg(ql_dbg_async, vha, 0x5024, 264 "Async_event for VP[%d], mb=0x%x vha=%p.\n", 265 i, *mb, vha); 266 qla2x00_async_event(vha, rsp, mb); 267 break; 268 } 269 270 spin_lock_irqsave(&ha->vport_slock, flags); 271 atomic_dec(&vha->vref_count); 272 } 273 i++; 274 } 275 spin_unlock_irqrestore(&ha->vport_slock, flags); 276 } 277 278 int 279 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 280 { 281 /* 282 * Physical port will do most of the abort and recovery work. We can 283 * just treat it as a loop down 284 */ 285 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 286 atomic_set(&vha->loop_state, LOOP_DOWN); 287 qla2x00_mark_all_devices_lost(vha, 0); 288 } else { 289 if (!atomic_read(&vha->loop_down_timer)) 290 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 291 } 292 293 /* 294 * To exclusively reset vport, we need to log it out first. Note: this 295 * control_vp can fail if ISP reset is already issued, this is 296 * expected, as the vp would be already logged out due to ISP reset. 297 */ 298 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 299 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 300 301 ql_dbg(ql_dbg_taskm, vha, 0x801d, 302 "Scheduling enable of Vport %d.\n", vha->vp_idx); 303 return qla24xx_enable_vp(vha); 304 } 305 306 static int 307 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 308 { 309 struct qla_hw_data *ha = vha->hw; 310 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 311 312 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012, 313 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags); 314 315 qla2x00_do_work(vha); 316 317 /* Check if Fw is ready to configure VP first */ 318 if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) { 319 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 320 /* VP acquired. complete port configuration */ 321 ql_dbg(ql_dbg_dpc, vha, 0x4014, 322 "Configure VP scheduled.\n"); 323 qla24xx_configure_vp(vha); 324 ql_dbg(ql_dbg_dpc, vha, 0x4015, 325 "Configure VP end.\n"); 326 return 0; 327 } 328 } 329 330 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 331 ql_dbg(ql_dbg_dpc, vha, 0x4016, 332 "FCPort update scheduled.\n"); 333 qla2x00_update_fcports(vha); 334 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 335 ql_dbg(ql_dbg_dpc, vha, 0x4017, 336 "FCPort update end.\n"); 337 } 338 339 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 340 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 341 atomic_read(&vha->loop_state) != LOOP_DOWN) { 342 343 ql_dbg(ql_dbg_dpc, vha, 0x4018, 344 "Relogin needed scheduled.\n"); 345 qla2x00_relogin(vha); 346 ql_dbg(ql_dbg_dpc, vha, 0x4019, 347 "Relogin needed end.\n"); 348 } 349 350 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 351 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 352 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 353 } 354 355 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 356 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 357 ql_dbg(ql_dbg_dpc, vha, 0x401a, 358 "Loop resync scheduled.\n"); 359 qla2x00_loop_resync(vha); 360 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 361 ql_dbg(ql_dbg_dpc, vha, 0x401b, 362 "Loop resync end.\n"); 363 } 364 } 365 366 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c, 367 "Exiting %s.\n", __func__); 368 return 0; 369 } 370 371 void 372 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 373 { 374 int ret; 375 struct qla_hw_data *ha = vha->hw; 376 scsi_qla_host_t *vp; 377 unsigned long flags = 0; 378 379 if (vha->vp_idx) 380 return; 381 if (list_empty(&ha->vp_list)) 382 return; 383 384 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 385 386 if (!(ha->current_topology & ISP_CFG_F)) 387 return; 388 389 spin_lock_irqsave(&ha->vport_slock, flags); 390 list_for_each_entry(vp, &ha->vp_list, list) { 391 if (vp->vp_idx) { 392 atomic_inc(&vp->vref_count); 393 spin_unlock_irqrestore(&ha->vport_slock, flags); 394 395 ret = qla2x00_do_dpc_vp(vp); 396 397 spin_lock_irqsave(&ha->vport_slock, flags); 398 atomic_dec(&vp->vref_count); 399 } 400 } 401 spin_unlock_irqrestore(&ha->vport_slock, flags); 402 } 403 404 int 405 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 406 { 407 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 408 struct qla_hw_data *ha = base_vha->hw; 409 scsi_qla_host_t *vha; 410 uint8_t port_name[WWN_SIZE]; 411 412 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 413 return VPCERR_UNSUPPORTED; 414 415 /* Check up the F/W and H/W support NPIV */ 416 if (!ha->flags.npiv_supported) 417 return VPCERR_UNSUPPORTED; 418 419 /* Check up whether npiv supported switch presented */ 420 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 421 return VPCERR_NO_FABRIC_SUPP; 422 423 /* Check up unique WWPN */ 424 u64_to_wwn(fc_vport->port_name, port_name); 425 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 426 return VPCERR_BAD_WWN; 427 vha = qla24xx_find_vhost_by_name(ha, port_name); 428 if (vha) 429 return VPCERR_BAD_WWN; 430 431 /* Check up max-npiv-supports */ 432 if (ha->num_vhosts > ha->max_npiv_vports) { 433 ql_dbg(ql_dbg_vport, vha, 0xa004, 434 "num_vhosts %ud is bigger " 435 "than max_npiv_vports %ud.\n", 436 ha->num_vhosts, ha->max_npiv_vports); 437 return VPCERR_UNSUPPORTED; 438 } 439 return 0; 440 } 441 442 scsi_qla_host_t * 443 qla24xx_create_vhost(struct fc_vport *fc_vport) 444 { 445 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 446 struct qla_hw_data *ha = base_vha->hw; 447 scsi_qla_host_t *vha; 448 struct scsi_host_template *sht = &qla2xxx_driver_template; 449 struct Scsi_Host *host; 450 451 vha = qla2x00_create_host(sht, ha); 452 if (!vha) { 453 ql_log(ql_log_warn, vha, 0xa005, 454 "scsi_host_alloc() failed for vport.\n"); 455 return(NULL); 456 } 457 458 host = vha->host; 459 fc_vport->dd_data = vha; 460 /* New host info */ 461 u64_to_wwn(fc_vport->node_name, vha->node_name); 462 u64_to_wwn(fc_vport->port_name, vha->port_name); 463 464 vha->fc_vport = fc_vport; 465 vha->device_flags = 0; 466 vha->vp_idx = qla24xx_allocate_vp_id(vha); 467 if (vha->vp_idx > ha->max_npiv_vports) { 468 ql_dbg(ql_dbg_vport, vha, 0xa006, 469 "Couldn't allocate vp_id.\n"); 470 goto create_vhost_failed; 471 } 472 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 473 474 vha->dpc_flags = 0L; 475 476 /* 477 * To fix the issue of processing a parent's RSCN for the vport before 478 * its SCR is complete. 479 */ 480 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 481 atomic_set(&vha->loop_state, LOOP_DOWN); 482 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 483 484 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 485 486 vha->req = base_vha->req; 487 host->can_queue = base_vha->req->length + 128; 488 host->cmd_per_lun = 3; 489 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) 490 host->max_cmd_len = 32; 491 else 492 host->max_cmd_len = MAX_CMDSZ; 493 host->max_channel = MAX_BUSES - 1; 494 host->max_lun = ql2xmaxlun; 495 host->unique_id = host->host_no; 496 host->max_id = ha->max_fibre_devices; 497 host->transportt = qla2xxx_transport_vport_template; 498 499 ql_dbg(ql_dbg_vport, vha, 0xa007, 500 "Detect vport hba %ld at address = %p.\n", 501 vha->host_no, vha); 502 503 vha->flags.init_done = 1; 504 505 mutex_lock(&ha->vport_lock); 506 set_bit(vha->vp_idx, ha->vp_idx_map); 507 ha->cur_vport_count++; 508 mutex_unlock(&ha->vport_lock); 509 510 return vha; 511 512 create_vhost_failed: 513 return NULL; 514 } 515 516 static void 517 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 518 { 519 struct qla_hw_data *ha = vha->hw; 520 uint16_t que_id = req->id; 521 522 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 523 sizeof(request_t), req->ring, req->dma); 524 req->ring = NULL; 525 req->dma = 0; 526 if (que_id) { 527 ha->req_q_map[que_id] = NULL; 528 mutex_lock(&ha->vport_lock); 529 clear_bit(que_id, ha->req_qid_map); 530 mutex_unlock(&ha->vport_lock); 531 } 532 kfree(req->outstanding_cmds); 533 kfree(req); 534 req = NULL; 535 } 536 537 static void 538 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 539 { 540 struct qla_hw_data *ha = vha->hw; 541 uint16_t que_id = rsp->id; 542 543 if (rsp->msix && rsp->msix->have_irq) { 544 free_irq(rsp->msix->vector, rsp); 545 rsp->msix->have_irq = 0; 546 rsp->msix->rsp = NULL; 547 } 548 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 549 sizeof(response_t), rsp->ring, rsp->dma); 550 rsp->ring = NULL; 551 rsp->dma = 0; 552 if (que_id) { 553 ha->rsp_q_map[que_id] = NULL; 554 mutex_lock(&ha->vport_lock); 555 clear_bit(que_id, ha->rsp_qid_map); 556 mutex_unlock(&ha->vport_lock); 557 } 558 kfree(rsp); 559 rsp = NULL; 560 } 561 562 int 563 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 564 { 565 int ret = -1; 566 567 if (req) { 568 req->options |= BIT_0; 569 ret = qla25xx_init_req_que(vha, req); 570 } 571 if (ret == QLA_SUCCESS) 572 qla25xx_free_req_que(vha, req); 573 574 return ret; 575 } 576 577 static int 578 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 579 { 580 int ret = -1; 581 582 if (rsp) { 583 rsp->options |= BIT_0; 584 ret = qla25xx_init_rsp_que(vha, rsp); 585 } 586 if (ret == QLA_SUCCESS) 587 qla25xx_free_rsp_que(vha, rsp); 588 589 return ret; 590 } 591 592 /* Delete all queues for a given vhost */ 593 int 594 qla25xx_delete_queues(struct scsi_qla_host *vha) 595 { 596 int cnt, ret = 0; 597 struct req_que *req = NULL; 598 struct rsp_que *rsp = NULL; 599 struct qla_hw_data *ha = vha->hw; 600 601 /* Delete request queues */ 602 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 603 req = ha->req_q_map[cnt]; 604 if (req) { 605 ret = qla25xx_delete_req_que(vha, req); 606 if (ret != QLA_SUCCESS) { 607 ql_log(ql_log_warn, vha, 0x00ea, 608 "Couldn't delete req que %d.\n", 609 req->id); 610 return ret; 611 } 612 } 613 } 614 615 /* Delete response queues */ 616 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 617 rsp = ha->rsp_q_map[cnt]; 618 if (rsp) { 619 ret = qla25xx_delete_rsp_que(vha, rsp); 620 if (ret != QLA_SUCCESS) { 621 ql_log(ql_log_warn, vha, 0x00eb, 622 "Couldn't delete rsp que %d.\n", 623 rsp->id); 624 return ret; 625 } 626 } 627 } 628 return ret; 629 } 630 631 int 632 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 633 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 634 { 635 int ret = 0; 636 struct req_que *req = NULL; 637 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 638 uint16_t que_id = 0; 639 device_reg_t *reg; 640 uint32_t cnt; 641 642 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 643 if (req == NULL) { 644 ql_log(ql_log_fatal, base_vha, 0x00d9, 645 "Failed to allocate memory for request queue.\n"); 646 goto failed; 647 } 648 649 req->length = REQUEST_ENTRY_CNT_24XX; 650 req->ring = dma_alloc_coherent(&ha->pdev->dev, 651 (req->length + 1) * sizeof(request_t), 652 &req->dma, GFP_KERNEL); 653 if (req->ring == NULL) { 654 ql_log(ql_log_fatal, base_vha, 0x00da, 655 "Failed to allocate memory for request_ring.\n"); 656 goto que_failed; 657 } 658 659 ret = qla2x00_alloc_outstanding_cmds(ha, req); 660 if (ret != QLA_SUCCESS) 661 goto que_failed; 662 663 mutex_lock(&ha->vport_lock); 664 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 665 if (que_id >= ha->max_req_queues) { 666 mutex_unlock(&ha->vport_lock); 667 ql_log(ql_log_warn, base_vha, 0x00db, 668 "No resources to create additional request queue.\n"); 669 goto que_failed; 670 } 671 set_bit(que_id, ha->req_qid_map); 672 ha->req_q_map[que_id] = req; 673 req->rid = rid; 674 req->vp_idx = vp_idx; 675 req->qos = qos; 676 677 ql_dbg(ql_dbg_multiq, base_vha, 0xc002, 678 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 679 que_id, req->rid, req->vp_idx, req->qos); 680 ql_dbg(ql_dbg_init, base_vha, 0x00dc, 681 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 682 que_id, req->rid, req->vp_idx, req->qos); 683 if (rsp_que < 0) 684 req->rsp = NULL; 685 else 686 req->rsp = ha->rsp_q_map[rsp_que]; 687 /* Use alternate PCI bus number */ 688 if (MSB(req->rid)) 689 options |= BIT_4; 690 /* Use alternate PCI devfn */ 691 if (LSB(req->rid)) 692 options |= BIT_5; 693 req->options = options; 694 695 ql_dbg(ql_dbg_multiq, base_vha, 0xc003, 696 "options=0x%x.\n", req->options); 697 ql_dbg(ql_dbg_init, base_vha, 0x00dd, 698 "options=0x%x.\n", req->options); 699 for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) 700 req->outstanding_cmds[cnt] = NULL; 701 req->current_outstanding_cmd = 1; 702 703 req->ring_ptr = req->ring; 704 req->ring_index = 0; 705 req->cnt = req->length; 706 req->id = que_id; 707 reg = ISP_QUE_REG(ha, que_id); 708 req->req_q_in = ®->isp25mq.req_q_in; 709 req->req_q_out = ®->isp25mq.req_q_out; 710 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 711 req->out_ptr = (void *)(req->ring + req->length); 712 mutex_unlock(&ha->vport_lock); 713 ql_dbg(ql_dbg_multiq, base_vha, 0xc004, 714 "ring_ptr=%p ring_index=%d, " 715 "cnt=%d id=%d max_q_depth=%d.\n", 716 req->ring_ptr, req->ring_index, 717 req->cnt, req->id, req->max_q_depth); 718 ql_dbg(ql_dbg_init, base_vha, 0x00de, 719 "ring_ptr=%p ring_index=%d, " 720 "cnt=%d id=%d max_q_depth=%d.\n", 721 req->ring_ptr, req->ring_index, req->cnt, 722 req->id, req->max_q_depth); 723 724 ret = qla25xx_init_req_que(base_vha, req); 725 if (ret != QLA_SUCCESS) { 726 ql_log(ql_log_fatal, base_vha, 0x00df, 727 "%s failed.\n", __func__); 728 mutex_lock(&ha->vport_lock); 729 clear_bit(que_id, ha->req_qid_map); 730 mutex_unlock(&ha->vport_lock); 731 goto que_failed; 732 } 733 734 return req->id; 735 736 que_failed: 737 qla25xx_free_req_que(base_vha, req); 738 failed: 739 return 0; 740 } 741 742 static void qla_do_work(struct work_struct *work) 743 { 744 unsigned long flags; 745 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 746 struct scsi_qla_host *vha; 747 struct qla_hw_data *ha = rsp->hw; 748 749 spin_lock_irqsave(&rsp->hw->hardware_lock, flags); 750 vha = pci_get_drvdata(ha->pdev); 751 qla24xx_process_response_queue(vha, rsp); 752 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags); 753 } 754 755 /* create response queue */ 756 int 757 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 758 uint8_t vp_idx, uint16_t rid, int req) 759 { 760 int ret = 0; 761 struct rsp_que *rsp = NULL; 762 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 763 uint16_t que_id = 0; 764 device_reg_t *reg; 765 766 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 767 if (rsp == NULL) { 768 ql_log(ql_log_warn, base_vha, 0x0066, 769 "Failed to allocate memory for response queue.\n"); 770 goto failed; 771 } 772 773 rsp->length = RESPONSE_ENTRY_CNT_MQ; 774 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 775 (rsp->length + 1) * sizeof(response_t), 776 &rsp->dma, GFP_KERNEL); 777 if (rsp->ring == NULL) { 778 ql_log(ql_log_warn, base_vha, 0x00e1, 779 "Failed to allocate memory for response ring.\n"); 780 goto que_failed; 781 } 782 783 mutex_lock(&ha->vport_lock); 784 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 785 if (que_id >= ha->max_rsp_queues) { 786 mutex_unlock(&ha->vport_lock); 787 ql_log(ql_log_warn, base_vha, 0x00e2, 788 "No resources to create additional request queue.\n"); 789 goto que_failed; 790 } 791 set_bit(que_id, ha->rsp_qid_map); 792 793 if (ha->flags.msix_enabled) 794 rsp->msix = &ha->msix_entries[que_id + 1]; 795 else 796 ql_log(ql_log_warn, base_vha, 0x00e3, 797 "MSIX not enabled.\n"); 798 799 ha->rsp_q_map[que_id] = rsp; 800 rsp->rid = rid; 801 rsp->vp_idx = vp_idx; 802 rsp->hw = ha; 803 ql_dbg(ql_dbg_init, base_vha, 0x00e4, 804 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n", 805 que_id, rsp->rid, rsp->vp_idx, rsp->hw); 806 /* Use alternate PCI bus number */ 807 if (MSB(rsp->rid)) 808 options |= BIT_4; 809 /* Use alternate PCI devfn */ 810 if (LSB(rsp->rid)) 811 options |= BIT_5; 812 /* Enable MSIX handshake mode on for uncapable adapters */ 813 if (!IS_MSIX_NACK_CAPABLE(ha)) 814 options |= BIT_6; 815 816 rsp->options = options; 817 rsp->id = que_id; 818 reg = ISP_QUE_REG(ha, que_id); 819 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 820 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 821 rsp->in_ptr = (void *)(rsp->ring + rsp->length); 822 mutex_unlock(&ha->vport_lock); 823 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b, 824 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 825 rsp->options, rsp->id, rsp->rsp_q_in, 826 rsp->rsp_q_out); 827 ql_dbg(ql_dbg_init, base_vha, 0x00e5, 828 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 829 rsp->options, rsp->id, rsp->rsp_q_in, 830 rsp->rsp_q_out); 831 832 ret = qla25xx_request_irq(rsp); 833 if (ret) 834 goto que_failed; 835 836 ret = qla25xx_init_rsp_que(base_vha, rsp); 837 if (ret != QLA_SUCCESS) { 838 ql_log(ql_log_fatal, base_vha, 0x00e7, 839 "%s failed.\n", __func__); 840 mutex_lock(&ha->vport_lock); 841 clear_bit(que_id, ha->rsp_qid_map); 842 mutex_unlock(&ha->vport_lock); 843 goto que_failed; 844 } 845 if (req >= 0) 846 rsp->req = ha->req_q_map[req]; 847 else 848 rsp->req = NULL; 849 850 qla2x00_init_response_q_entries(rsp); 851 if (rsp->hw->wq) 852 INIT_WORK(&rsp->q_work, qla_do_work); 853 return rsp->id; 854 855 que_failed: 856 qla25xx_free_rsp_que(base_vha, rsp); 857 failed: 858 return 0; 859 } 860