1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2013 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 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012, 310 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags); 311 312 qla2x00_do_work(vha); 313 314 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 315 /* VP acquired. complete port configuration */ 316 ql_dbg(ql_dbg_dpc, vha, 0x4014, 317 "Configure VP scheduled.\n"); 318 qla24xx_configure_vp(vha); 319 ql_dbg(ql_dbg_dpc, vha, 0x4015, 320 "Configure VP end.\n"); 321 return 0; 322 } 323 324 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 325 ql_dbg(ql_dbg_dpc, vha, 0x4016, 326 "FCPort update scheduled.\n"); 327 qla2x00_update_fcports(vha); 328 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 329 ql_dbg(ql_dbg_dpc, vha, 0x4017, 330 "FCPort update end.\n"); 331 } 332 333 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 334 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 335 atomic_read(&vha->loop_state) != LOOP_DOWN) { 336 337 ql_dbg(ql_dbg_dpc, vha, 0x4018, 338 "Relogin needed scheduled.\n"); 339 qla2x00_relogin(vha); 340 ql_dbg(ql_dbg_dpc, vha, 0x4019, 341 "Relogin needed end.\n"); 342 } 343 344 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 345 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 346 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 347 } 348 349 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 350 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 351 ql_dbg(ql_dbg_dpc, vha, 0x401a, 352 "Loop resync scheduled.\n"); 353 qla2x00_loop_resync(vha); 354 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 355 ql_dbg(ql_dbg_dpc, vha, 0x401b, 356 "Loop resync end.\n"); 357 } 358 } 359 360 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c, 361 "Exiting %s.\n", __func__); 362 return 0; 363 } 364 365 void 366 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 367 { 368 int ret; 369 struct qla_hw_data *ha = vha->hw; 370 scsi_qla_host_t *vp; 371 unsigned long flags = 0; 372 373 if (vha->vp_idx) 374 return; 375 if (list_empty(&ha->vp_list)) 376 return; 377 378 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 379 380 if (!(ha->current_topology & ISP_CFG_F)) 381 return; 382 383 spin_lock_irqsave(&ha->vport_slock, flags); 384 list_for_each_entry(vp, &ha->vp_list, list) { 385 if (vp->vp_idx) { 386 atomic_inc(&vp->vref_count); 387 spin_unlock_irqrestore(&ha->vport_slock, flags); 388 389 ret = qla2x00_do_dpc_vp(vp); 390 391 spin_lock_irqsave(&ha->vport_slock, flags); 392 atomic_dec(&vp->vref_count); 393 } 394 } 395 spin_unlock_irqrestore(&ha->vport_slock, flags); 396 } 397 398 int 399 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 400 { 401 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 402 struct qla_hw_data *ha = base_vha->hw; 403 scsi_qla_host_t *vha; 404 uint8_t port_name[WWN_SIZE]; 405 406 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 407 return VPCERR_UNSUPPORTED; 408 409 /* Check up the F/W and H/W support NPIV */ 410 if (!ha->flags.npiv_supported) 411 return VPCERR_UNSUPPORTED; 412 413 /* Check up whether npiv supported switch presented */ 414 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 415 return VPCERR_NO_FABRIC_SUPP; 416 417 /* Check up unique WWPN */ 418 u64_to_wwn(fc_vport->port_name, port_name); 419 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 420 return VPCERR_BAD_WWN; 421 vha = qla24xx_find_vhost_by_name(ha, port_name); 422 if (vha) 423 return VPCERR_BAD_WWN; 424 425 /* Check up max-npiv-supports */ 426 if (ha->num_vhosts > ha->max_npiv_vports) { 427 ql_dbg(ql_dbg_vport, vha, 0xa004, 428 "num_vhosts %ud is bigger " 429 "than max_npiv_vports %ud.\n", 430 ha->num_vhosts, ha->max_npiv_vports); 431 return VPCERR_UNSUPPORTED; 432 } 433 return 0; 434 } 435 436 scsi_qla_host_t * 437 qla24xx_create_vhost(struct fc_vport *fc_vport) 438 { 439 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 440 struct qla_hw_data *ha = base_vha->hw; 441 scsi_qla_host_t *vha; 442 struct scsi_host_template *sht = &qla2xxx_driver_template; 443 struct Scsi_Host *host; 444 445 vha = qla2x00_create_host(sht, ha); 446 if (!vha) { 447 ql_log(ql_log_warn, vha, 0xa005, 448 "scsi_host_alloc() failed for vport.\n"); 449 return(NULL); 450 } 451 452 host = vha->host; 453 fc_vport->dd_data = vha; 454 /* New host info */ 455 u64_to_wwn(fc_vport->node_name, vha->node_name); 456 u64_to_wwn(fc_vport->port_name, vha->port_name); 457 458 vha->fc_vport = fc_vport; 459 vha->device_flags = 0; 460 vha->vp_idx = qla24xx_allocate_vp_id(vha); 461 if (vha->vp_idx > ha->max_npiv_vports) { 462 ql_dbg(ql_dbg_vport, vha, 0xa006, 463 "Couldn't allocate vp_id.\n"); 464 goto create_vhost_failed; 465 } 466 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 467 468 vha->dpc_flags = 0L; 469 470 /* 471 * To fix the issue of processing a parent's RSCN for the vport before 472 * its SCR is complete. 473 */ 474 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 475 atomic_set(&vha->loop_state, LOOP_DOWN); 476 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 477 478 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 479 480 vha->req = base_vha->req; 481 host->can_queue = base_vha->req->length + 128; 482 host->cmd_per_lun = 3; 483 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) 484 host->max_cmd_len = 32; 485 else 486 host->max_cmd_len = MAX_CMDSZ; 487 host->max_channel = MAX_BUSES - 1; 488 host->max_lun = ql2xmaxlun; 489 host->unique_id = host->host_no; 490 host->max_id = ha->max_fibre_devices; 491 host->transportt = qla2xxx_transport_vport_template; 492 493 ql_dbg(ql_dbg_vport, vha, 0xa007, 494 "Detect vport hba %ld at address = %p.\n", 495 vha->host_no, vha); 496 497 vha->flags.init_done = 1; 498 499 mutex_lock(&ha->vport_lock); 500 set_bit(vha->vp_idx, ha->vp_idx_map); 501 ha->cur_vport_count++; 502 mutex_unlock(&ha->vport_lock); 503 504 return vha; 505 506 create_vhost_failed: 507 return NULL; 508 } 509 510 static void 511 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 512 { 513 struct qla_hw_data *ha = vha->hw; 514 uint16_t que_id = req->id; 515 516 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 517 sizeof(request_t), req->ring, req->dma); 518 req->ring = NULL; 519 req->dma = 0; 520 if (que_id) { 521 ha->req_q_map[que_id] = NULL; 522 mutex_lock(&ha->vport_lock); 523 clear_bit(que_id, ha->req_qid_map); 524 mutex_unlock(&ha->vport_lock); 525 } 526 kfree(req->outstanding_cmds); 527 kfree(req); 528 req = NULL; 529 } 530 531 static void 532 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 533 { 534 struct qla_hw_data *ha = vha->hw; 535 uint16_t que_id = rsp->id; 536 537 if (rsp->msix && rsp->msix->have_irq) { 538 free_irq(rsp->msix->vector, rsp); 539 rsp->msix->have_irq = 0; 540 rsp->msix->rsp = NULL; 541 } 542 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 543 sizeof(response_t), rsp->ring, rsp->dma); 544 rsp->ring = NULL; 545 rsp->dma = 0; 546 if (que_id) { 547 ha->rsp_q_map[que_id] = NULL; 548 mutex_lock(&ha->vport_lock); 549 clear_bit(que_id, ha->rsp_qid_map); 550 mutex_unlock(&ha->vport_lock); 551 } 552 kfree(rsp); 553 rsp = NULL; 554 } 555 556 int 557 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 558 { 559 int ret = -1; 560 561 if (req) { 562 req->options |= BIT_0; 563 ret = qla25xx_init_req_que(vha, req); 564 } 565 if (ret == QLA_SUCCESS) 566 qla25xx_free_req_que(vha, req); 567 568 return ret; 569 } 570 571 static int 572 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 573 { 574 int ret = -1; 575 576 if (rsp) { 577 rsp->options |= BIT_0; 578 ret = qla25xx_init_rsp_que(vha, rsp); 579 } 580 if (ret == QLA_SUCCESS) 581 qla25xx_free_rsp_que(vha, rsp); 582 583 return ret; 584 } 585 586 /* Delete all queues for a given vhost */ 587 int 588 qla25xx_delete_queues(struct scsi_qla_host *vha) 589 { 590 int cnt, ret = 0; 591 struct req_que *req = NULL; 592 struct rsp_que *rsp = NULL; 593 struct qla_hw_data *ha = vha->hw; 594 595 /* Delete request queues */ 596 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 597 req = ha->req_q_map[cnt]; 598 if (req) { 599 ret = qla25xx_delete_req_que(vha, req); 600 if (ret != QLA_SUCCESS) { 601 ql_log(ql_log_warn, vha, 0x00ea, 602 "Couldn't delete req que %d.\n", 603 req->id); 604 return ret; 605 } 606 } 607 } 608 609 /* Delete response queues */ 610 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 611 rsp = ha->rsp_q_map[cnt]; 612 if (rsp) { 613 ret = qla25xx_delete_rsp_que(vha, rsp); 614 if (ret != QLA_SUCCESS) { 615 ql_log(ql_log_warn, vha, 0x00eb, 616 "Couldn't delete rsp que %d.\n", 617 rsp->id); 618 return ret; 619 } 620 } 621 } 622 return ret; 623 } 624 625 int 626 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 627 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 628 { 629 int ret = 0; 630 struct req_que *req = NULL; 631 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 632 uint16_t que_id = 0; 633 device_reg_t *reg; 634 uint32_t cnt; 635 636 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 637 if (req == NULL) { 638 ql_log(ql_log_fatal, base_vha, 0x00d9, 639 "Failed to allocate memory for request queue.\n"); 640 goto failed; 641 } 642 643 req->length = REQUEST_ENTRY_CNT_24XX; 644 req->ring = dma_alloc_coherent(&ha->pdev->dev, 645 (req->length + 1) * sizeof(request_t), 646 &req->dma, GFP_KERNEL); 647 if (req->ring == NULL) { 648 ql_log(ql_log_fatal, base_vha, 0x00da, 649 "Failed to allocate memory for request_ring.\n"); 650 goto que_failed; 651 } 652 653 ret = qla2x00_alloc_outstanding_cmds(ha, req); 654 if (ret != QLA_SUCCESS) 655 goto que_failed; 656 657 mutex_lock(&ha->vport_lock); 658 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 659 if (que_id >= ha->max_req_queues) { 660 mutex_unlock(&ha->vport_lock); 661 ql_log(ql_log_warn, base_vha, 0x00db, 662 "No resources to create additional request queue.\n"); 663 goto que_failed; 664 } 665 set_bit(que_id, ha->req_qid_map); 666 ha->req_q_map[que_id] = req; 667 req->rid = rid; 668 req->vp_idx = vp_idx; 669 req->qos = qos; 670 671 ql_dbg(ql_dbg_multiq, base_vha, 0xc002, 672 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 673 que_id, req->rid, req->vp_idx, req->qos); 674 ql_dbg(ql_dbg_init, base_vha, 0x00dc, 675 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 676 que_id, req->rid, req->vp_idx, req->qos); 677 if (rsp_que < 0) 678 req->rsp = NULL; 679 else 680 req->rsp = ha->rsp_q_map[rsp_que]; 681 /* Use alternate PCI bus number */ 682 if (MSB(req->rid)) 683 options |= BIT_4; 684 /* Use alternate PCI devfn */ 685 if (LSB(req->rid)) 686 options |= BIT_5; 687 req->options = options; 688 689 ql_dbg(ql_dbg_multiq, base_vha, 0xc003, 690 "options=0x%x.\n", req->options); 691 ql_dbg(ql_dbg_init, base_vha, 0x00dd, 692 "options=0x%x.\n", req->options); 693 for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) 694 req->outstanding_cmds[cnt] = NULL; 695 req->current_outstanding_cmd = 1; 696 697 req->ring_ptr = req->ring; 698 req->ring_index = 0; 699 req->cnt = req->length; 700 req->id = que_id; 701 reg = ISP_QUE_REG(ha, que_id); 702 req->req_q_in = ®->isp25mq.req_q_in; 703 req->req_q_out = ®->isp25mq.req_q_out; 704 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 705 mutex_unlock(&ha->vport_lock); 706 ql_dbg(ql_dbg_multiq, base_vha, 0xc004, 707 "ring_ptr=%p ring_index=%d, " 708 "cnt=%d id=%d max_q_depth=%d.\n", 709 req->ring_ptr, req->ring_index, 710 req->cnt, req->id, req->max_q_depth); 711 ql_dbg(ql_dbg_init, base_vha, 0x00de, 712 "ring_ptr=%p ring_index=%d, " 713 "cnt=%d id=%d max_q_depth=%d.\n", 714 req->ring_ptr, req->ring_index, req->cnt, 715 req->id, req->max_q_depth); 716 717 ret = qla25xx_init_req_que(base_vha, req); 718 if (ret != QLA_SUCCESS) { 719 ql_log(ql_log_fatal, base_vha, 0x00df, 720 "%s failed.\n", __func__); 721 mutex_lock(&ha->vport_lock); 722 clear_bit(que_id, ha->req_qid_map); 723 mutex_unlock(&ha->vport_lock); 724 goto que_failed; 725 } 726 727 return req->id; 728 729 que_failed: 730 qla25xx_free_req_que(base_vha, req); 731 failed: 732 return 0; 733 } 734 735 static void qla_do_work(struct work_struct *work) 736 { 737 unsigned long flags; 738 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 739 struct scsi_qla_host *vha; 740 struct qla_hw_data *ha = rsp->hw; 741 742 spin_lock_irqsave(&rsp->hw->hardware_lock, flags); 743 vha = pci_get_drvdata(ha->pdev); 744 qla24xx_process_response_queue(vha, rsp); 745 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags); 746 } 747 748 /* create response queue */ 749 int 750 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 751 uint8_t vp_idx, uint16_t rid, int req) 752 { 753 int ret = 0; 754 struct rsp_que *rsp = NULL; 755 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 756 uint16_t que_id = 0; 757 device_reg_t *reg; 758 759 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 760 if (rsp == NULL) { 761 ql_log(ql_log_warn, base_vha, 0x0066, 762 "Failed to allocate memory for response queue.\n"); 763 goto failed; 764 } 765 766 rsp->length = RESPONSE_ENTRY_CNT_MQ; 767 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 768 (rsp->length + 1) * sizeof(response_t), 769 &rsp->dma, GFP_KERNEL); 770 if (rsp->ring == NULL) { 771 ql_log(ql_log_warn, base_vha, 0x00e1, 772 "Failed to allocate memory for response ring.\n"); 773 goto que_failed; 774 } 775 776 mutex_lock(&ha->vport_lock); 777 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 778 if (que_id >= ha->max_rsp_queues) { 779 mutex_unlock(&ha->vport_lock); 780 ql_log(ql_log_warn, base_vha, 0x00e2, 781 "No resources to create additional request queue.\n"); 782 goto que_failed; 783 } 784 set_bit(que_id, ha->rsp_qid_map); 785 786 if (ha->flags.msix_enabled) 787 rsp->msix = &ha->msix_entries[que_id + 1]; 788 else 789 ql_log(ql_log_warn, base_vha, 0x00e3, 790 "MSIX not enalbled.\n"); 791 792 ha->rsp_q_map[que_id] = rsp; 793 rsp->rid = rid; 794 rsp->vp_idx = vp_idx; 795 rsp->hw = ha; 796 ql_dbg(ql_dbg_init, base_vha, 0x00e4, 797 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n", 798 que_id, rsp->rid, rsp->vp_idx, rsp->hw); 799 /* Use alternate PCI bus number */ 800 if (MSB(rsp->rid)) 801 options |= BIT_4; 802 /* Use alternate PCI devfn */ 803 if (LSB(rsp->rid)) 804 options |= BIT_5; 805 /* Enable MSIX handshake mode on for uncapable adapters */ 806 if (!IS_MSIX_NACK_CAPABLE(ha)) 807 options |= BIT_6; 808 809 rsp->options = options; 810 rsp->id = que_id; 811 reg = ISP_QUE_REG(ha, que_id); 812 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 813 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 814 mutex_unlock(&ha->vport_lock); 815 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b, 816 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 817 rsp->options, rsp->id, rsp->rsp_q_in, 818 rsp->rsp_q_out); 819 ql_dbg(ql_dbg_init, base_vha, 0x00e5, 820 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 821 rsp->options, rsp->id, rsp->rsp_q_in, 822 rsp->rsp_q_out); 823 824 ret = qla25xx_request_irq(rsp); 825 if (ret) 826 goto que_failed; 827 828 ret = qla25xx_init_rsp_que(base_vha, rsp); 829 if (ret != QLA_SUCCESS) { 830 ql_log(ql_log_fatal, base_vha, 0x00e7, 831 "%s failed.\n", __func__); 832 mutex_lock(&ha->vport_lock); 833 clear_bit(que_id, ha->rsp_qid_map); 834 mutex_unlock(&ha->vport_lock); 835 goto que_failed; 836 } 837 if (req >= 0) 838 rsp->req = ha->req_q_map[req]; 839 else 840 rsp->req = NULL; 841 842 qla2x00_init_response_q_entries(rsp); 843 if (rsp->hw->wq) 844 INIT_WORK(&rsp->q_work, qla_do_work); 845 return rsp->id; 846 847 que_failed: 848 qla25xx_free_rsp_que(base_vha, rsp); 849 failed: 850 return 0; 851 } 852