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 static void 149 isci_single_map(void *arg, bus_dma_segment_t *seg, int nseg, int error) 150 { 151 SCI_PHYSICAL_ADDRESS *phys_addr = arg; 152 153 *phys_addr = seg[0].ds_addr; 154 } 155 156 /** 157 * @brief This method will be invoked to allocate memory dynamically. 158 * 159 * @param[in] controller This parameter represents the controller 160 * object for which to allocate memory. 161 * @param[out] mde This parameter represents the memory descriptor to 162 * be filled in by the user that will reference the newly 163 * allocated memory. 164 * 165 * @return none 166 */ 167 void scif_cb_controller_allocate_memory(SCI_CONTROLLER_HANDLE_T controller, 168 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T *mde) 169 { 170 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 171 sci_object_get_association(controller); 172 173 /* 174 * Note this routine is only used for buffers needed to translate 175 * SCSI UNMAP commands to ATA DSM commands for SATA disks. 176 * 177 * We first try to pull a buffer from the controller's pool, and only 178 * call contigmalloc if one isn't there. 179 */ 180 if (!sci_pool_empty(isci_controller->unmap_buffer_pool)) { 181 sci_pool_get(isci_controller->unmap_buffer_pool, 182 mde->virtual_address); 183 } else 184 mde->virtual_address = contigmalloc(PAGE_SIZE, 185 M_ISCI, M_NOWAIT, 0, BUS_SPACE_MAXADDR, 186 mde->constant_memory_alignment, 0); 187 188 if (mde->virtual_address != NULL) 189 bus_dmamap_load(isci_controller->buffer_dma_tag, 190 NULL, mde->virtual_address, PAGE_SIZE, 191 isci_single_map, &mde->physical_address, 192 BUS_DMA_NOWAIT); 193 } 194 195 /** 196 * @brief This method will be invoked to allocate memory dynamically. 197 * 198 * @param[in] controller This parameter represents the controller 199 * object for which to allocate memory. 200 * @param[out] mde This parameter represents the memory descriptor to 201 * be filled in by the user that will reference the newly 202 * allocated memory. 203 * 204 * @return none 205 */ 206 void scif_cb_controller_free_memory(SCI_CONTROLLER_HANDLE_T controller, 207 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde) 208 { 209 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 210 sci_object_get_association(controller); 211 212 /* 213 * Put the buffer back into the controller's buffer pool, rather 214 * than invoking configfree. This helps reduce chance we won't 215 * have buffers available when system is under memory pressure. 216 */ 217 sci_pool_put(isci_controller->unmap_buffer_pool, 218 mde->virtual_address); 219 } 220 221 void isci_controller_construct(struct ISCI_CONTROLLER *controller, 222 struct isci_softc *isci) 223 { 224 SCI_CONTROLLER_HANDLE_T scif_controller_handle; 225 226 scif_library_allocate_controller(isci->sci_library_handle, 227 &scif_controller_handle); 228 229 scif_controller_construct(isci->sci_library_handle, 230 scif_controller_handle, NULL); 231 232 controller->isci = isci; 233 controller->scif_controller_handle = scif_controller_handle; 234 235 /* This allows us to later use 236 * sci_object_get_association(scif_controller_handle) 237 * inside of a callback routine to get our struct ISCI_CONTROLLER object 238 */ 239 sci_object_set_association(scif_controller_handle, (void *)controller); 240 241 controller->is_started = FALSE; 242 controller->is_frozen = FALSE; 243 controller->release_queued_ccbs = FALSE; 244 controller->sim = NULL; 245 controller->initial_discovery_mask = 0; 246 247 sci_fast_list_init(&controller->pending_device_reset_list); 248 249 mtx_init(&controller->lock, "isci", NULL, MTX_DEF); 250 251 uint32_t domain_index; 252 253 for(domain_index = 0; domain_index < SCI_MAX_DOMAINS; domain_index++) { 254 isci_domain_construct( &controller->domain[domain_index], 255 domain_index, controller); 256 } 257 258 controller->timer_memory = malloc( 259 sizeof(struct ISCI_TIMER) * SCI_MAX_TIMERS, M_ISCI, 260 M_NOWAIT | M_ZERO); 261 262 sci_pool_initialize(controller->timer_pool); 263 264 struct ISCI_TIMER *timer = (struct ISCI_TIMER *) 265 controller->timer_memory; 266 267 for ( int i = 0; i < SCI_MAX_TIMERS; i++ ) { 268 sci_pool_put(controller->timer_pool, timer++); 269 } 270 271 sci_pool_initialize(controller->unmap_buffer_pool); 272 } 273 274 SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller) 275 { 276 SCIC_USER_PARAMETERS_T scic_user_parameters; 277 SCI_CONTROLLER_HANDLE_T scic_controller_handle; 278 unsigned long tunable; 279 int i; 280 281 scic_controller_handle = 282 scif_controller_get_scic_handle(controller->scif_controller_handle); 283 284 if (controller->isci->oem_parameters_found == TRUE) 285 { 286 scic_oem_parameters_set( 287 scic_controller_handle, 288 &controller->oem_parameters, 289 (uint8_t)(controller->oem_parameters_version)); 290 } 291 292 scic_user_parameters_get(scic_controller_handle, &scic_user_parameters); 293 294 if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable)) 295 scic_user_parameters.sds1.no_outbound_task_timeout = 296 (uint8_t)tunable; 297 298 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable)) 299 scic_user_parameters.sds1.ssp_max_occupancy_timeout = 300 (uint16_t)tunable; 301 302 if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable)) 303 scic_user_parameters.sds1.stp_max_occupancy_timeout = 304 (uint16_t)tunable; 305 306 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable)) 307 scic_user_parameters.sds1.ssp_inactivity_timeout = 308 (uint16_t)tunable; 309 310 if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable)) 311 scic_user_parameters.sds1.stp_inactivity_timeout = 312 (uint16_t)tunable; 313 314 if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable)) 315 for (i = 0; i < SCI_MAX_PHYS; i++) 316 scic_user_parameters.sds1.phys[i].max_speed_generation = 317 (uint8_t)tunable; 318 319 scic_user_parameters_set(scic_controller_handle, &scic_user_parameters); 320 321 /* Scheduler bug in SCU requires SCIL to reserve some task contexts as a 322 * a workaround - one per domain. 323 */ 324 controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS; 325 326 if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth", 327 &controller->queue_depth)) { 328 controller->queue_depth = max(1, min(controller->queue_depth, 329 SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS)); 330 } 331 332 /* Reserve one request so that we can ensure we have one available TC 333 * to do internal device resets. 334 */ 335 controller->sim_queue_depth = controller->queue_depth - 1; 336 337 /* Although we save one TC to do internal device resets, it is possible 338 * we could end up using several TCs for simultaneous device resets 339 * while at the same time having CAM fill our controller queue. To 340 * simulate this condition, and how our driver handles it, we can set 341 * this io_shortage parameter, which will tell CAM that we have a 342 * large queue depth than we really do. 343 */ 344 uint32_t io_shortage = 0; 345 TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage); 346 controller->sim_queue_depth += io_shortage; 347 348 /* Attach to CAM using xpt_bus_register now, then immediately freeze 349 * the simq. It will get released later when initial domain discovery 350 * is complete. 351 */ 352 controller->has_been_scanned = FALSE; 353 mtx_lock(&controller->lock); 354 isci_controller_attach_to_cam(controller); 355 xpt_freeze_simq(controller->sim, 1); 356 mtx_unlock(&controller->lock); 357 358 return (scif_controller_initialize(controller->scif_controller_handle)); 359 } 360 361 int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller) 362 { 363 int error; 364 device_t device = controller->isci->device; 365 uint32_t max_segment_size = isci_io_request_get_max_io_size(); 366 uint32_t status = 0; 367 struct ISCI_MEMORY *uncached_controller_memory = 368 &controller->uncached_controller_memory; 369 struct ISCI_MEMORY *cached_controller_memory = 370 &controller->cached_controller_memory; 371 struct ISCI_MEMORY *request_memory = 372 &controller->request_memory; 373 POINTER_UINT virtual_address; 374 bus_addr_t physical_address; 375 376 controller->mdl = sci_controller_get_memory_descriptor_list_handle( 377 controller->scif_controller_handle); 378 379 uncached_controller_memory->size = sci_mdl_decorator_get_memory_size( 380 controller->mdl, SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS); 381 382 error = isci_allocate_dma_buffer(device, uncached_controller_memory); 383 384 if (error != 0) 385 return (error); 386 387 sci_mdl_decorator_assign_memory( controller->mdl, 388 SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 389 uncached_controller_memory->virtual_address, 390 uncached_controller_memory->physical_address); 391 392 cached_controller_memory->size = sci_mdl_decorator_get_memory_size( 393 controller->mdl, 394 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS 395 ); 396 397 error = isci_allocate_dma_buffer(device, cached_controller_memory); 398 399 if (error != 0) 400 return (error); 401 402 sci_mdl_decorator_assign_memory(controller->mdl, 403 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 404 cached_controller_memory->virtual_address, 405 cached_controller_memory->physical_address); 406 407 request_memory->size = 408 controller->queue_depth * isci_io_request_get_object_size(); 409 410 error = isci_allocate_dma_buffer(device, request_memory); 411 412 if (error != 0) 413 return (error); 414 415 /* For STP PIO testing, we want to ensure we can force multiple SGLs 416 * since this has been a problem area in SCIL. This tunable parameter 417 * will allow us to force DMA segments to a smaller size, ensuring 418 * that even if a physically contiguous buffer is attached to this 419 * I/O, the DMA subsystem will pass us multiple segments in our DMA 420 * load callback. 421 */ 422 TUNABLE_INT_FETCH("hw.isci.max_segment_size", &max_segment_size); 423 424 /* Create DMA tag for our I/O requests. Then we can create DMA maps based off 425 * of this tag and store them in each of our ISCI_IO_REQUEST objects. This 426 * will enable better performance than creating the DMA maps everytime we get 427 * an I/O. 428 */ 429 status = bus_dma_tag_create(bus_get_dma_tag(device), 0x1, 0x0, 430 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 431 isci_io_request_get_max_io_size(), 432 SCI_MAX_SCATTER_GATHER_ELEMENTS, max_segment_size, 0, NULL, NULL, 433 &controller->buffer_dma_tag); 434 435 sci_pool_initialize(controller->request_pool); 436 437 virtual_address = request_memory->virtual_address; 438 physical_address = request_memory->physical_address; 439 440 for (int i = 0; i < controller->queue_depth; i++) { 441 struct ISCI_REQUEST *request = 442 (struct ISCI_REQUEST *)virtual_address; 443 444 isci_request_construct(request, 445 controller->scif_controller_handle, 446 controller->buffer_dma_tag, physical_address); 447 448 sci_pool_put(controller->request_pool, request); 449 450 virtual_address += isci_request_get_object_size(); 451 physical_address += isci_request_get_object_size(); 452 } 453 454 uint32_t remote_device_size = sizeof(struct ISCI_REMOTE_DEVICE) + 455 scif_remote_device_get_object_size(); 456 457 controller->remote_device_memory = (uint8_t *) malloc( 458 remote_device_size * SCI_MAX_REMOTE_DEVICES, M_ISCI, 459 M_NOWAIT | M_ZERO); 460 461 sci_pool_initialize(controller->remote_device_pool); 462 463 uint8_t *remote_device_memory_ptr = controller->remote_device_memory; 464 465 for (int i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 466 struct ISCI_REMOTE_DEVICE *remote_device = 467 (struct ISCI_REMOTE_DEVICE *)remote_device_memory_ptr; 468 469 controller->remote_device[i] = NULL; 470 remote_device->index = i; 471 remote_device->is_resetting = FALSE; 472 remote_device->frozen_lun_mask = 0; 473 sci_fast_list_element_init(remote_device, 474 &remote_device->pending_device_reset_element); 475 TAILQ_INIT(&remote_device->queued_ccbs); 476 remote_device->release_queued_ccb = FALSE; 477 remote_device->queued_ccb_in_progress = NULL; 478 479 /* 480 * For the first SCI_MAX_DOMAINS device objects, do not put 481 * them in the pool, rather assign them to each domain. This 482 * ensures that any device attached directly to port "i" will 483 * always get CAM target id "i". 484 */ 485 if (i < SCI_MAX_DOMAINS) 486 controller->domain[i].da_remote_device = remote_device; 487 else 488 sci_pool_put(controller->remote_device_pool, 489 remote_device); 490 remote_device_memory_ptr += remote_device_size; 491 } 492 493 return (0); 494 } 495 496 void isci_controller_start(void *controller_handle) 497 { 498 struct ISCI_CONTROLLER *controller = 499 (struct ISCI_CONTROLLER *)controller_handle; 500 SCI_CONTROLLER_HANDLE_T scif_controller_handle = 501 controller->scif_controller_handle; 502 503 scif_controller_start(scif_controller_handle, 504 scif_controller_get_suggested_start_timeout(scif_controller_handle)); 505 506 scic_controller_enable_interrupts( 507 scif_controller_get_scic_handle(controller->scif_controller_handle)); 508 } 509 510 void isci_controller_domain_discovery_complete( 511 struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain) 512 { 513 if (!isci_controller->has_been_scanned) 514 { 515 /* Controller has not been scanned yet. We'll clear 516 * the discovery bit for this domain, then check if all bits 517 * are now clear. That would indicate that all domains are 518 * done with discovery and we can then proceed with initial 519 * scan. 520 */ 521 522 isci_controller->initial_discovery_mask &= 523 ~(1 << isci_domain->index); 524 525 if (isci_controller->initial_discovery_mask == 0) { 526 struct isci_softc *driver = isci_controller->isci; 527 uint8_t next_index = isci_controller->index + 1; 528 529 isci_controller->has_been_scanned = TRUE; 530 531 /* Unfreeze simq to allow initial scan to proceed. */ 532 xpt_release_simq(isci_controller->sim, TRUE); 533 534 #if __FreeBSD_version < 800000 535 /* When driver is loaded after boot, we need to 536 * explicitly rescan here for versions <8.0, because 537 * CAM only automatically scans new buses at boot 538 * time. 539 */ 540 union ccb *ccb = xpt_alloc_ccb_nowait(); 541 542 xpt_create_path(&ccb->ccb_h.path, xpt_periph, 543 cam_sim_path(isci_controller->sim), 544 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 545 546 xpt_rescan(ccb); 547 #endif 548 549 if (next_index < driver->controller_count) { 550 /* There are more controllers that need to 551 * start. So start the next one. 552 */ 553 isci_controller_start( 554 &driver->controllers[next_index]); 555 } 556 else 557 { 558 /* All controllers have been started and completed discovery. 559 * Disestablish the config hook while will signal to the 560 * kernel during boot that it is safe to try to find and 561 * mount the root partition. 562 */ 563 config_intrhook_disestablish( 564 &driver->config_hook); 565 } 566 } 567 } 568 } 569 570 int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller) 571 { 572 struct isci_softc *isci = controller->isci; 573 device_t parent = device_get_parent(isci->device); 574 int unit = device_get_unit(isci->device); 575 struct cam_devq *isci_devq = cam_simq_alloc(controller->sim_queue_depth); 576 577 if(isci_devq == NULL) { 578 isci_log_message(0, "ISCI", "isci_devq is NULL \n"); 579 return (-1); 580 } 581 582 controller->sim = cam_sim_alloc(isci_action, isci_poll, "isci", 583 controller, unit, &controller->lock, controller->sim_queue_depth, 584 controller->sim_queue_depth, isci_devq); 585 586 if(controller->sim == NULL) { 587 isci_log_message(0, "ISCI", "cam_sim_alloc... fails\n"); 588 cam_simq_free(isci_devq); 589 return (-1); 590 } 591 592 if(xpt_bus_register(controller->sim, parent, controller->index) 593 != CAM_SUCCESS) { 594 isci_log_message(0, "ISCI", "xpt_bus_register...fails \n"); 595 cam_sim_free(controller->sim, TRUE); 596 mtx_unlock(&controller->lock); 597 return (-1); 598 } 599 600 if(xpt_create_path(&controller->path, NULL, 601 cam_sim_path(controller->sim), CAM_TARGET_WILDCARD, 602 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 603 isci_log_message(0, "ISCI", "xpt_create_path....fails\n"); 604 xpt_bus_deregister(cam_sim_path(controller->sim)); 605 cam_sim_free(controller->sim, TRUE); 606 mtx_unlock(&controller->lock); 607 return (-1); 608 } 609 610 return (0); 611 } 612 613 void isci_poll(struct cam_sim *sim) 614 { 615 struct ISCI_CONTROLLER *controller = 616 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 617 618 isci_interrupt_poll_handler(controller); 619 } 620 621 void isci_action(struct cam_sim *sim, union ccb *ccb) 622 { 623 struct ISCI_CONTROLLER *controller = 624 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 625 626 switch ( ccb->ccb_h.func_code ) { 627 case XPT_PATH_INQ: 628 { 629 struct ccb_pathinq *cpi = &ccb->cpi; 630 int bus = cam_sim_bus(sim); 631 ccb->ccb_h.ccb_sim_ptr = sim; 632 cpi->version_num = 1; 633 cpi->hba_inquiry = PI_TAG_ABLE; 634 cpi->target_sprt = 0; 635 cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN; 636 cpi->hba_eng_cnt = 0; 637 cpi->max_target = SCI_MAX_REMOTE_DEVICES - 1; 638 cpi->max_lun = ISCI_MAX_LUN; 639 #if __FreeBSD_version >= 800102 640 cpi->maxio = isci_io_request_get_max_io_size(); 641 #endif 642 cpi->unit_number = cam_sim_unit(sim); 643 cpi->bus_id = bus; 644 cpi->initiator_id = SCI_MAX_REMOTE_DEVICES; 645 cpi->base_transfer_speed = 300000; 646 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 647 strncpy(cpi->hba_vid, "Intel Corp.", HBA_IDLEN); 648 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 649 cpi->transport = XPORT_SAS; 650 cpi->transport_version = 0; 651 cpi->protocol = PROTO_SCSI; 652 cpi->protocol_version = SCSI_REV_SPC2; 653 cpi->ccb_h.status = CAM_REQ_CMP; 654 xpt_done(ccb); 655 } 656 break; 657 case XPT_GET_TRAN_SETTINGS: 658 { 659 struct ccb_trans_settings *general_settings = &ccb->cts; 660 struct ccb_trans_settings_sas *sas_settings = 661 &general_settings->xport_specific.sas; 662 struct ccb_trans_settings_scsi *scsi_settings = 663 &general_settings->proto_specific.scsi; 664 struct ISCI_REMOTE_DEVICE *remote_device; 665 666 remote_device = controller->remote_device[ccb->ccb_h.target_id]; 667 668 if (remote_device == NULL) { 669 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 670 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 671 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 672 xpt_done(ccb); 673 break; 674 } 675 676 general_settings->protocol = PROTO_SCSI; 677 general_settings->transport = XPORT_SAS; 678 general_settings->protocol_version = SCSI_REV_SPC2; 679 general_settings->transport_version = 0; 680 scsi_settings->valid = CTS_SCSI_VALID_TQ; 681 scsi_settings->flags = CTS_SCSI_FLAGS_TAG_ENB; 682 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 683 ccb->ccb_h.status |= CAM_REQ_CMP; 684 685 sas_settings->bitrate = 686 isci_remote_device_get_bitrate(remote_device); 687 688 if (sas_settings->bitrate != 0) 689 sas_settings->valid = CTS_SAS_VALID_SPEED; 690 691 xpt_done(ccb); 692 } 693 break; 694 case XPT_SCSI_IO: 695 isci_io_request_execute_scsi_io(ccb, controller); 696 break; 697 #if __FreeBSD_version >= 900026 698 case XPT_SMP_IO: 699 isci_io_request_execute_smp_io(ccb, controller); 700 break; 701 #endif 702 case XPT_SET_TRAN_SETTINGS: 703 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 704 ccb->ccb_h.status |= CAM_REQ_CMP; 705 xpt_done(ccb); 706 break; 707 case XPT_CALC_GEOMETRY: 708 cam_calc_geometry(&ccb->ccg, /*extended*/1); 709 xpt_done(ccb); 710 break; 711 case XPT_RESET_DEV: 712 { 713 struct ISCI_REMOTE_DEVICE *remote_device = 714 controller->remote_device[ccb->ccb_h.target_id]; 715 716 if (remote_device != NULL) 717 isci_remote_device_reset(remote_device, ccb); 718 else { 719 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 720 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 721 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 722 xpt_done(ccb); 723 } 724 } 725 break; 726 case XPT_RESET_BUS: 727 ccb->ccb_h.status = CAM_REQ_CMP; 728 xpt_done(ccb); 729 break; 730 default: 731 isci_log_message(0, "ISCI", "Unhandled func_code 0x%x\n", 732 ccb->ccb_h.func_code); 733 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 734 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 735 ccb->ccb_h.status |= CAM_REQ_INVALID; 736 xpt_done(ccb); 737 break; 738 } 739 } 740 741 /* 742 * Unfortunately, SCIL doesn't cleanly handle retry conditions. 743 * CAM_REQUEUE_REQ works only when no one is using the pass(4) interface. So 744 * when SCIL denotes an I/O needs to be retried (typically because of mixing 745 * tagged/non-tagged ATA commands, or running out of NCQ slots), we queue 746 * these I/O internally. Once SCIL completes an I/O to this device, or we get 747 * a ready notification, we will retry the first I/O on the queue. 748 * Unfortunately, SCIL also doesn't cleanly handle starting the new I/O within 749 * the context of the completion handler, so we need to retry these I/O after 750 * the completion handler is done executing. 751 */ 752 void 753 isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller) 754 { 755 struct ISCI_REMOTE_DEVICE *dev; 756 struct ccb_hdr *ccb_h; 757 int dev_idx; 758 759 KASSERT(mtx_owned(&controller->lock), ("controller lock not owned")); 760 761 controller->release_queued_ccbs = FALSE; 762 for (dev_idx = 0; 763 dev_idx < SCI_MAX_REMOTE_DEVICES; 764 dev_idx++) { 765 766 dev = controller->remote_device[dev_idx]; 767 if (dev != NULL && 768 dev->release_queued_ccb == TRUE && 769 dev->queued_ccb_in_progress == NULL) { 770 dev->release_queued_ccb = FALSE; 771 ccb_h = TAILQ_FIRST(&dev->queued_ccbs); 772 773 if (ccb_h == NULL) 774 continue; 775 776 isci_log_message(1, "ISCI", "release %p %x\n", ccb_h, 777 ((union ccb *)ccb_h)->csio.cdb_io.cdb_bytes[0]); 778 779 dev->queued_ccb_in_progress = (union ccb *)ccb_h; 780 isci_io_request_execute_scsi_io( 781 (union ccb *)ccb_h, controller); 782 } 783 } 784 } 785