1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <dev/isci/isci.h> 35 36 #include <sys/conf.h> 37 #include <sys/malloc.h> 38 39 #include <cam/cam_periph.h> 40 #include <cam/cam_xpt_periph.h> 41 42 #include <dev/isci/scil/sci_memory_descriptor_list.h> 43 #include <dev/isci/scil/sci_memory_descriptor_list_decorator.h> 44 45 #include <dev/isci/scil/scif_controller.h> 46 #include <dev/isci/scil/scif_library.h> 47 #include <dev/isci/scil/scif_io_request.h> 48 #include <dev/isci/scil/scif_task_request.h> 49 #include <dev/isci/scil/scif_remote_device.h> 50 #include <dev/isci/scil/scif_domain.h> 51 #include <dev/isci/scil/scif_user_callback.h> 52 53 void isci_action(struct cam_sim *sim, union ccb *ccb); 54 void isci_poll(struct cam_sim *sim); 55 56 #define ccb_sim_ptr sim_priv.entries[0].ptr 57 58 /** 59 * @brief This user callback will inform the user that the controller has 60 * had a serious unexpected error. The user should not the error, 61 * disable interrupts, and wait for current ongoing processing to 62 * complete. Subsequently, the user should reset the controller. 63 * 64 * @param[in] controller This parameter specifies the controller that had 65 * an error. 66 * 67 * @return none 68 */ 69 void scif_cb_controller_error(SCI_CONTROLLER_HANDLE_T controller, 70 SCI_CONTROLLER_ERROR error) 71 { 72 73 isci_log_message(0, "ISCI", "scif_cb_controller_error: 0x%x\n", 74 error); 75 } 76 77 /** 78 * @brief This user callback will inform the user that the controller has 79 * finished the start process. 80 * 81 * @param[in] controller This parameter specifies the controller that was 82 * started. 83 * @param[in] completion_status This parameter specifies the results of 84 * the start operation. SCI_SUCCESS indicates successful 85 * completion. 86 * 87 * @return none 88 */ 89 void scif_cb_controller_start_complete(SCI_CONTROLLER_HANDLE_T controller, 90 SCI_STATUS completion_status) 91 { 92 uint32_t index; 93 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 94 sci_object_get_association(controller); 95 96 isci_controller->is_started = TRUE; 97 98 /* Set bits for all domains. We will clear them one-by-one once 99 * the domains complete discovery, or return error when calling 100 * scif_domain_discover. Once all bits are clear, we will register 101 * the controller with CAM. 102 */ 103 isci_controller->initial_discovery_mask = (1 << SCI_MAX_DOMAINS) - 1; 104 105 for(index = 0; index < SCI_MAX_DOMAINS; index++) { 106 SCI_STATUS status; 107 SCI_DOMAIN_HANDLE_T domain = 108 isci_controller->domain[index].sci_object; 109 110 status = scif_domain_discover( 111 domain, 112 scif_domain_get_suggested_discover_timeout(domain), 113 DEVICE_TIMEOUT 114 ); 115 116 if (status != SCI_SUCCESS) 117 { 118 isci_controller_domain_discovery_complete( 119 isci_controller, &isci_controller->domain[index]); 120 } 121 } 122 } 123 124 /** 125 * @brief This user callback will inform the user that the controller has 126 * finished the stop process. Note, after user calls 127 * scif_controller_stop(), before user receives this controller stop 128 * complete callback, user should not expect any callback from 129 * framework, such like scif_cb_domain_change_notification(). 130 * 131 * @param[in] controller This parameter specifies the controller that was 132 * stopped. 133 * @param[in] completion_status This parameter specifies the results of 134 * the stop operation. SCI_SUCCESS indicates successful 135 * completion. 136 * 137 * @return none 138 */ 139 void scif_cb_controller_stop_complete(SCI_CONTROLLER_HANDLE_T controller, 140 SCI_STATUS completion_status) 141 { 142 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 143 sci_object_get_association(controller); 144 145 isci_controller->is_started = FALSE; 146 } 147 148 /** 149 * @brief This method will be invoked to allocate memory dynamically. 150 * 151 * @param[in] controller This parameter represents the controller 152 * object for which to allocate memory. 153 * @param[out] mde This parameter represents the memory descriptor to 154 * be filled in by the user that will reference the newly 155 * allocated memory. 156 * 157 * @return none 158 */ 159 void scif_cb_controller_allocate_memory(SCI_CONTROLLER_HANDLE_T controller, 160 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T *mde) 161 { 162 163 } 164 165 /** 166 * @brief This method will be invoked to allocate memory dynamically. 167 * 168 * @param[in] controller This parameter represents the controller 169 * object for which to allocate memory. 170 * @param[out] mde This parameter represents the memory descriptor to 171 * be filled in by the user that will reference the newly 172 * allocated memory. 173 * 174 * @return none 175 */ 176 void scif_cb_controller_free_memory(SCI_CONTROLLER_HANDLE_T controller, 177 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde) 178 { 179 180 } 181 182 void isci_controller_construct(struct ISCI_CONTROLLER *controller, 183 struct isci_softc *isci) 184 { 185 SCI_CONTROLLER_HANDLE_T scif_controller_handle; 186 187 scif_library_allocate_controller(isci->sci_library_handle, 188 &scif_controller_handle); 189 190 scif_controller_construct(isci->sci_library_handle, 191 scif_controller_handle, NULL); 192 193 controller->isci = isci; 194 controller->scif_controller_handle = scif_controller_handle; 195 196 /* This allows us to later use 197 * sci_object_get_association(scif_controller_handle) 198 * inside of a callback routine to get our struct ISCI_CONTROLLER object 199 */ 200 sci_object_set_association(scif_controller_handle, (void *)controller); 201 202 controller->is_started = FALSE; 203 controller->is_frozen = FALSE; 204 controller->release_queued_ccbs = FALSE; 205 controller->sim = NULL; 206 controller->initial_discovery_mask = 0; 207 208 sci_fast_list_init(&controller->pending_device_reset_list); 209 210 mtx_init(&controller->lock, "isci", NULL, MTX_DEF); 211 212 uint32_t domain_index; 213 214 for(domain_index = 0; domain_index < SCI_MAX_DOMAINS; domain_index++) { 215 isci_domain_construct( &controller->domain[domain_index], 216 domain_index, controller); 217 } 218 219 controller->timer_memory = malloc( 220 sizeof(struct ISCI_TIMER) * SCI_MAX_TIMERS, M_ISCI, 221 M_NOWAIT | M_ZERO); 222 223 sci_pool_initialize(controller->timer_pool); 224 225 struct ISCI_TIMER *timer = (struct ISCI_TIMER *) 226 controller->timer_memory; 227 228 for ( int i = 0; i < SCI_MAX_TIMERS; i++ ) { 229 sci_pool_put(controller->timer_pool, timer++); 230 } 231 } 232 233 SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller) 234 { 235 SCIC_USER_PARAMETERS_T scic_user_parameters; 236 SCI_CONTROLLER_HANDLE_T scic_controller_handle; 237 unsigned long tunable; 238 int i; 239 240 scic_controller_handle = 241 scif_controller_get_scic_handle(controller->scif_controller_handle); 242 243 if (controller->isci->oem_parameters_found == TRUE) 244 { 245 scic_oem_parameters_set( 246 scic_controller_handle, 247 &controller->oem_parameters, 248 (uint8_t)(controller->oem_parameters_version)); 249 } 250 251 scic_user_parameters_get(scic_controller_handle, &scic_user_parameters); 252 253 if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable)) 254 scic_user_parameters.sds1.no_outbound_task_timeout = 255 (uint8_t)tunable; 256 257 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable)) 258 scic_user_parameters.sds1.ssp_max_occupancy_timeout = 259 (uint16_t)tunable; 260 261 if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable)) 262 scic_user_parameters.sds1.stp_max_occupancy_timeout = 263 (uint16_t)tunable; 264 265 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable)) 266 scic_user_parameters.sds1.ssp_inactivity_timeout = 267 (uint16_t)tunable; 268 269 if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable)) 270 scic_user_parameters.sds1.stp_inactivity_timeout = 271 (uint16_t)tunable; 272 273 if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable)) 274 for (i = 0; i < SCI_MAX_PHYS; i++) 275 scic_user_parameters.sds1.phys[i].max_speed_generation = 276 (uint8_t)tunable; 277 278 scic_user_parameters_set(scic_controller_handle, &scic_user_parameters); 279 280 /* Scheduler bug in SCU requires SCIL to reserve some task contexts as a 281 * a workaround - one per domain. 282 */ 283 controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS; 284 285 if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth", 286 &controller->queue_depth)) { 287 controller->queue_depth = max(1, min(controller->queue_depth, 288 SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS)); 289 } 290 291 /* Reserve one request so that we can ensure we have one available TC 292 * to do internal device resets. 293 */ 294 controller->sim_queue_depth = controller->queue_depth - 1; 295 296 /* Although we save one TC to do internal device resets, it is possible 297 * we could end up using several TCs for simultaneous device resets 298 * while at the same time having CAM fill our controller queue. To 299 * simulate this condition, and how our driver handles it, we can set 300 * this io_shortage parameter, which will tell CAM that we have a 301 * large queue depth than we really do. 302 */ 303 uint32_t io_shortage = 0; 304 TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage); 305 controller->sim_queue_depth += io_shortage; 306 307 /* Attach to CAM using xpt_bus_register now, then immediately freeze 308 * the simq. It will get released later when initial domain discovery 309 * is complete. 310 */ 311 controller->has_been_scanned = FALSE; 312 mtx_lock(&controller->lock); 313 isci_controller_attach_to_cam(controller); 314 xpt_freeze_simq(controller->sim, 1); 315 mtx_unlock(&controller->lock); 316 317 return (scif_controller_initialize(controller->scif_controller_handle)); 318 } 319 320 int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller) 321 { 322 int error; 323 device_t device = controller->isci->device; 324 uint32_t max_segment_size = isci_io_request_get_max_io_size(); 325 uint32_t status = 0; 326 struct ISCI_MEMORY *uncached_controller_memory = 327 &controller->uncached_controller_memory; 328 struct ISCI_MEMORY *cached_controller_memory = 329 &controller->cached_controller_memory; 330 struct ISCI_MEMORY *request_memory = 331 &controller->request_memory; 332 POINTER_UINT virtual_address; 333 bus_addr_t physical_address; 334 335 controller->mdl = sci_controller_get_memory_descriptor_list_handle( 336 controller->scif_controller_handle); 337 338 uncached_controller_memory->size = sci_mdl_decorator_get_memory_size( 339 controller->mdl, SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS); 340 341 error = isci_allocate_dma_buffer(device, uncached_controller_memory); 342 343 if (error != 0) 344 return (error); 345 346 sci_mdl_decorator_assign_memory( controller->mdl, 347 SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 348 uncached_controller_memory->virtual_address, 349 uncached_controller_memory->physical_address); 350 351 cached_controller_memory->size = sci_mdl_decorator_get_memory_size( 352 controller->mdl, 353 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS 354 ); 355 356 error = isci_allocate_dma_buffer(device, cached_controller_memory); 357 358 if (error != 0) 359 return (error); 360 361 sci_mdl_decorator_assign_memory(controller->mdl, 362 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 363 cached_controller_memory->virtual_address, 364 cached_controller_memory->physical_address); 365 366 request_memory->size = 367 controller->queue_depth * isci_io_request_get_object_size(); 368 369 error = isci_allocate_dma_buffer(device, request_memory); 370 371 if (error != 0) 372 return (error); 373 374 /* For STP PIO testing, we want to ensure we can force multiple SGLs 375 * since this has been a problem area in SCIL. This tunable parameter 376 * will allow us to force DMA segments to a smaller size, ensuring 377 * that even if a physically contiguous buffer is attached to this 378 * I/O, the DMA subsystem will pass us multiple segments in our DMA 379 * load callback. 380 */ 381 TUNABLE_INT_FETCH("hw.isci.max_segment_size", &max_segment_size); 382 383 /* Create DMA tag for our I/O requests. Then we can create DMA maps based off 384 * of this tag and store them in each of our ISCI_IO_REQUEST objects. This 385 * will enable better performance than creating the DMA maps everytime we get 386 * an I/O. 387 */ 388 status = bus_dma_tag_create(bus_get_dma_tag(device), 0x1, 0x0, 389 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 390 isci_io_request_get_max_io_size(), 391 SCI_MAX_SCATTER_GATHER_ELEMENTS, max_segment_size, 0, NULL, NULL, 392 &controller->buffer_dma_tag); 393 394 sci_pool_initialize(controller->request_pool); 395 396 virtual_address = request_memory->virtual_address; 397 physical_address = request_memory->physical_address; 398 399 for (int i = 0; i < controller->queue_depth; i++) { 400 struct ISCI_REQUEST *request = 401 (struct ISCI_REQUEST *)virtual_address; 402 403 isci_request_construct(request, 404 controller->scif_controller_handle, 405 controller->buffer_dma_tag, physical_address); 406 407 sci_pool_put(controller->request_pool, request); 408 409 virtual_address += isci_request_get_object_size(); 410 physical_address += isci_request_get_object_size(); 411 } 412 413 uint32_t remote_device_size = sizeof(struct ISCI_REMOTE_DEVICE) + 414 scif_remote_device_get_object_size(); 415 416 controller->remote_device_memory = (uint8_t *) malloc( 417 remote_device_size * SCI_MAX_REMOTE_DEVICES, M_ISCI, 418 M_NOWAIT | M_ZERO); 419 420 sci_pool_initialize(controller->remote_device_pool); 421 422 uint8_t *remote_device_memory_ptr = controller->remote_device_memory; 423 424 for (int i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 425 struct ISCI_REMOTE_DEVICE *remote_device = 426 (struct ISCI_REMOTE_DEVICE *)remote_device_memory_ptr; 427 428 controller->remote_device[i] = NULL; 429 remote_device->index = i; 430 remote_device->is_resetting = FALSE; 431 remote_device->frozen_lun_mask = 0; 432 sci_fast_list_element_init(remote_device, 433 &remote_device->pending_device_reset_element); 434 TAILQ_INIT(&remote_device->queued_ccbs); 435 remote_device->release_queued_ccb = FALSE; 436 remote_device->queued_ccb_in_progress = NULL; 437 438 /* 439 * For the first SCI_MAX_DOMAINS device objects, do not put 440 * them in the pool, rather assign them to each domain. This 441 * ensures that any device attached directly to port "i" will 442 * always get CAM target id "i". 443 */ 444 if (i < SCI_MAX_DOMAINS) 445 controller->domain[i].da_remote_device = remote_device; 446 else 447 sci_pool_put(controller->remote_device_pool, 448 remote_device); 449 remote_device_memory_ptr += remote_device_size; 450 } 451 452 return (0); 453 } 454 455 void isci_controller_start(void *controller_handle) 456 { 457 struct ISCI_CONTROLLER *controller = 458 (struct ISCI_CONTROLLER *)controller_handle; 459 SCI_CONTROLLER_HANDLE_T scif_controller_handle = 460 controller->scif_controller_handle; 461 462 scif_controller_start(scif_controller_handle, 463 scif_controller_get_suggested_start_timeout(scif_controller_handle)); 464 465 scic_controller_enable_interrupts( 466 scif_controller_get_scic_handle(controller->scif_controller_handle)); 467 } 468 469 void isci_controller_domain_discovery_complete( 470 struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain) 471 { 472 if (!isci_controller->has_been_scanned) 473 { 474 /* Controller has not been scanned yet. We'll clear 475 * the discovery bit for this domain, then check if all bits 476 * are now clear. That would indicate that all domains are 477 * done with discovery and we can then proceed with initial 478 * scan. 479 */ 480 481 isci_controller->initial_discovery_mask &= 482 ~(1 << isci_domain->index); 483 484 if (isci_controller->initial_discovery_mask == 0) { 485 struct isci_softc *driver = isci_controller->isci; 486 uint8_t next_index = isci_controller->index + 1; 487 488 isci_controller->has_been_scanned = TRUE; 489 490 /* Unfreeze simq to allow initial scan to proceed. */ 491 xpt_release_simq(isci_controller->sim, TRUE); 492 493 #if __FreeBSD_version < 800000 494 /* When driver is loaded after boot, we need to 495 * explicitly rescan here for versions <8.0, because 496 * CAM only automatically scans new buses at boot 497 * time. 498 */ 499 union ccb *ccb = xpt_alloc_ccb_nowait(); 500 501 xpt_create_path(&ccb->ccb_h.path, xpt_periph, 502 cam_sim_path(isci_controller->sim), 503 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 504 505 xpt_rescan(ccb); 506 #endif 507 508 if (next_index < driver->controller_count) { 509 /* There are more controllers that need to 510 * start. So start the next one. 511 */ 512 isci_controller_start( 513 &driver->controllers[next_index]); 514 } 515 else 516 { 517 /* All controllers have been started and completed discovery. 518 * Disestablish the config hook while will signal to the 519 * kernel during boot that it is safe to try to find and 520 * mount the root partition. 521 */ 522 config_intrhook_disestablish( 523 &driver->config_hook); 524 } 525 } 526 } 527 } 528 529 int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller) 530 { 531 struct isci_softc *isci = controller->isci; 532 device_t parent = device_get_parent(isci->device); 533 int unit = device_get_unit(isci->device); 534 struct cam_devq *isci_devq = cam_simq_alloc(controller->sim_queue_depth); 535 536 if(isci_devq == NULL) { 537 isci_log_message(0, "ISCI", "isci_devq is NULL \n"); 538 return (-1); 539 } 540 541 controller->sim = cam_sim_alloc(isci_action, isci_poll, "isci", 542 controller, unit, &controller->lock, controller->sim_queue_depth, 543 controller->sim_queue_depth, isci_devq); 544 545 if(controller->sim == NULL) { 546 isci_log_message(0, "ISCI", "cam_sim_alloc... fails\n"); 547 cam_simq_free(isci_devq); 548 return (-1); 549 } 550 551 if(xpt_bus_register(controller->sim, parent, controller->index) 552 != CAM_SUCCESS) { 553 isci_log_message(0, "ISCI", "xpt_bus_register...fails \n"); 554 cam_sim_free(controller->sim, TRUE); 555 mtx_unlock(&controller->lock); 556 return (-1); 557 } 558 559 if(xpt_create_path(&controller->path, NULL, 560 cam_sim_path(controller->sim), CAM_TARGET_WILDCARD, 561 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 562 isci_log_message(0, "ISCI", "xpt_create_path....fails\n"); 563 xpt_bus_deregister(cam_sim_path(controller->sim)); 564 cam_sim_free(controller->sim, TRUE); 565 mtx_unlock(&controller->lock); 566 return (-1); 567 } 568 569 return (0); 570 } 571 572 void isci_poll(struct cam_sim *sim) 573 { 574 struct ISCI_CONTROLLER *controller = 575 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 576 577 isci_interrupt_poll_handler(controller); 578 } 579 580 void isci_action(struct cam_sim *sim, union ccb *ccb) 581 { 582 struct ISCI_CONTROLLER *controller = 583 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 584 585 switch ( ccb->ccb_h.func_code ) { 586 case XPT_PATH_INQ: 587 { 588 struct ccb_pathinq *cpi = &ccb->cpi; 589 int bus = cam_sim_bus(sim); 590 ccb->ccb_h.ccb_sim_ptr = sim; 591 cpi->version_num = 1; 592 cpi->hba_inquiry = PI_TAG_ABLE; 593 cpi->target_sprt = 0; 594 cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN; 595 cpi->hba_eng_cnt = 0; 596 cpi->max_target = SCI_MAX_REMOTE_DEVICES - 1; 597 cpi->max_lun = ISCI_MAX_LUN; 598 #if __FreeBSD_version >= 800102 599 cpi->maxio = isci_io_request_get_max_io_size(); 600 #endif 601 cpi->unit_number = cam_sim_unit(sim); 602 cpi->bus_id = bus; 603 cpi->initiator_id = SCI_MAX_REMOTE_DEVICES; 604 cpi->base_transfer_speed = 300000; 605 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 606 strncpy(cpi->hba_vid, "Intel Corp.", HBA_IDLEN); 607 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 608 cpi->transport = XPORT_SAS; 609 cpi->transport_version = 0; 610 cpi->protocol = PROTO_SCSI; 611 cpi->protocol_version = SCSI_REV_SPC2; 612 cpi->ccb_h.status = CAM_REQ_CMP; 613 xpt_done(ccb); 614 } 615 break; 616 case XPT_GET_TRAN_SETTINGS: 617 { 618 struct ccb_trans_settings *general_settings = &ccb->cts; 619 struct ccb_trans_settings_sas *sas_settings = 620 &general_settings->xport_specific.sas; 621 struct ccb_trans_settings_scsi *scsi_settings = 622 &general_settings->proto_specific.scsi; 623 struct ISCI_REMOTE_DEVICE *remote_device; 624 625 remote_device = controller->remote_device[ccb->ccb_h.target_id]; 626 627 if (remote_device == NULL) { 628 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 629 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 630 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 631 xpt_done(ccb); 632 break; 633 } 634 635 general_settings->protocol = PROTO_SCSI; 636 general_settings->transport = XPORT_SAS; 637 general_settings->protocol_version = SCSI_REV_SPC2; 638 general_settings->transport_version = 0; 639 scsi_settings->valid = CTS_SCSI_VALID_TQ; 640 scsi_settings->flags = CTS_SCSI_FLAGS_TAG_ENB; 641 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 642 ccb->ccb_h.status |= CAM_REQ_CMP; 643 644 sas_settings->bitrate = 645 isci_remote_device_get_bitrate(remote_device); 646 647 if (sas_settings->bitrate != 0) 648 sas_settings->valid = CTS_SAS_VALID_SPEED; 649 650 xpt_done(ccb); 651 } 652 break; 653 case XPT_SCSI_IO: 654 isci_io_request_execute_scsi_io(ccb, controller); 655 break; 656 #if __FreeBSD_version >= 900026 657 case XPT_SMP_IO: 658 isci_io_request_execute_smp_io(ccb, controller); 659 break; 660 #endif 661 case XPT_SET_TRAN_SETTINGS: 662 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 663 ccb->ccb_h.status |= CAM_REQ_CMP; 664 xpt_done(ccb); 665 break; 666 case XPT_CALC_GEOMETRY: 667 cam_calc_geometry(&ccb->ccg, /*extended*/1); 668 xpt_done(ccb); 669 break; 670 case XPT_RESET_DEV: 671 { 672 struct ISCI_REMOTE_DEVICE *remote_device = 673 controller->remote_device[ccb->ccb_h.target_id]; 674 675 if (remote_device != NULL) 676 isci_remote_device_reset(remote_device, ccb); 677 else { 678 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 679 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 680 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 681 xpt_done(ccb); 682 } 683 } 684 break; 685 case XPT_RESET_BUS: 686 ccb->ccb_h.status = CAM_REQ_CMP; 687 xpt_done(ccb); 688 break; 689 default: 690 isci_log_message(0, "ISCI", "Unhandled func_code 0x%x\n", 691 ccb->ccb_h.func_code); 692 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 693 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 694 ccb->ccb_h.status |= CAM_REQ_INVALID; 695 xpt_done(ccb); 696 break; 697 } 698 } 699 700 /* 701 * Unfortunately, SCIL doesn't cleanly handle retry conditions. 702 * CAM_REQUEUE_REQ works only when no one is using the pass(4) interface. So 703 * when SCIL denotes an I/O needs to be retried (typically because of mixing 704 * tagged/non-tagged ATA commands, or running out of NCQ slots), we queue 705 * these I/O internally. Once SCIL completes an I/O to this device, or we get 706 * a ready notification, we will retry the first I/O on the queue. 707 * Unfortunately, SCIL also doesn't cleanly handle starting the new I/O within 708 * the context of the completion handler, so we need to retry these I/O after 709 * the completion handler is done executing. 710 */ 711 void 712 isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller) 713 { 714 struct ISCI_REMOTE_DEVICE *dev; 715 struct ccb_hdr *ccb_h; 716 int dev_idx; 717 718 KASSERT(mtx_owned(&controller->lock), ("controller lock not owned")); 719 720 controller->release_queued_ccbs = FALSE; 721 for (dev_idx = 0; 722 dev_idx < SCI_MAX_REMOTE_DEVICES; 723 dev_idx++) { 724 725 dev = controller->remote_device[dev_idx]; 726 if (dev != NULL && 727 dev->release_queued_ccb == TRUE && 728 dev->queued_ccb_in_progress == NULL) { 729 dev->release_queued_ccb = FALSE; 730 ccb_h = TAILQ_FIRST(&dev->queued_ccbs); 731 732 if (ccb_h == NULL) 733 continue; 734 735 isci_log_message(1, "ISCI", "release %p %x\n", ccb_h, 736 ((union ccb *)ccb_h)->csio.cdb_io.cdb_bytes[0]); 737 738 dev->queued_ccb_in_progress = (union ccb *)ccb_h; 739 isci_io_request_execute_scsi_io( 740 (union ccb *)ccb_h, controller); 741 } 742 } 743 } 744