isci_controller.c revision 240965
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: head/sys/dev/isci/isci_controller.c 240965 2012-09-26 16:46:44Z jimharris $"); 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#include <dev/isci/scil/scic_sgpio.h> 53 54#include <dev/led/led.h> 55 56void isci_action(struct cam_sim *sim, union ccb *ccb); 57void isci_poll(struct cam_sim *sim); 58 59#define ccb_sim_ptr sim_priv.entries[0].ptr 60 61/** 62 * @brief This user callback will inform the user that the controller has 63 * had a serious unexpected error. The user should not the error, 64 * disable interrupts, and wait for current ongoing processing to 65 * complete. Subsequently, the user should reset the controller. 66 * 67 * @param[in] controller This parameter specifies the controller that had 68 * an error. 69 * 70 * @return none 71 */ 72void scif_cb_controller_error(SCI_CONTROLLER_HANDLE_T controller, 73 SCI_CONTROLLER_ERROR error) 74{ 75 76 isci_log_message(0, "ISCI", "scif_cb_controller_error: 0x%x\n", 77 error); 78} 79 80/** 81 * @brief This user callback will inform the user that the controller has 82 * finished the start process. 83 * 84 * @param[in] controller This parameter specifies the controller that was 85 * started. 86 * @param[in] completion_status This parameter specifies the results of 87 * the start operation. SCI_SUCCESS indicates successful 88 * completion. 89 * 90 * @return none 91 */ 92void scif_cb_controller_start_complete(SCI_CONTROLLER_HANDLE_T controller, 93 SCI_STATUS completion_status) 94{ 95 uint32_t index; 96 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 97 sci_object_get_association(controller); 98 99 isci_controller->is_started = TRUE; 100 101 /* Set bits for all domains. We will clear them one-by-one once 102 * the domains complete discovery, or return error when calling 103 * scif_domain_discover. Once all bits are clear, we will register 104 * the controller with CAM. 105 */ 106 isci_controller->initial_discovery_mask = (1 << SCI_MAX_DOMAINS) - 1; 107 108 for(index = 0; index < SCI_MAX_DOMAINS; index++) { 109 SCI_STATUS status; 110 SCI_DOMAIN_HANDLE_T domain = 111 isci_controller->domain[index].sci_object; 112 113 status = scif_domain_discover( 114 domain, 115 scif_domain_get_suggested_discover_timeout(domain), 116 DEVICE_TIMEOUT 117 ); 118 119 if (status != SCI_SUCCESS) 120 { 121 isci_controller_domain_discovery_complete( 122 isci_controller, &isci_controller->domain[index]); 123 } 124 } 125} 126 127/** 128 * @brief This user callback will inform the user that the controller has 129 * finished the stop process. Note, after user calls 130 * scif_controller_stop(), before user receives this controller stop 131 * complete callback, user should not expect any callback from 132 * framework, such like scif_cb_domain_change_notification(). 133 * 134 * @param[in] controller This parameter specifies the controller that was 135 * stopped. 136 * @param[in] completion_status This parameter specifies the results of 137 * the stop operation. SCI_SUCCESS indicates successful 138 * completion. 139 * 140 * @return none 141 */ 142void scif_cb_controller_stop_complete(SCI_CONTROLLER_HANDLE_T controller, 143 SCI_STATUS completion_status) 144{ 145 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 146 sci_object_get_association(controller); 147 148 isci_controller->is_started = FALSE; 149} 150 151static void 152isci_single_map(void *arg, bus_dma_segment_t *seg, int nseg, int error) 153{ 154 SCI_PHYSICAL_ADDRESS *phys_addr = arg; 155 156 *phys_addr = seg[0].ds_addr; 157} 158 159/** 160 * @brief This method will be invoked to allocate memory dynamically. 161 * 162 * @param[in] controller This parameter represents the controller 163 * object for which to allocate memory. 164 * @param[out] mde This parameter represents the memory descriptor to 165 * be filled in by the user that will reference the newly 166 * allocated memory. 167 * 168 * @return none 169 */ 170void scif_cb_controller_allocate_memory(SCI_CONTROLLER_HANDLE_T controller, 171 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T *mde) 172{ 173 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 174 sci_object_get_association(controller); 175 176 /* 177 * Note this routine is only used for buffers needed to translate 178 * SCSI UNMAP commands to ATA DSM commands for SATA disks. 179 * 180 * We first try to pull a buffer from the controller's pool, and only 181 * call contigmalloc if one isn't there. 182 */ 183 if (!sci_pool_empty(isci_controller->unmap_buffer_pool)) { 184 sci_pool_get(isci_controller->unmap_buffer_pool, 185 mde->virtual_address); 186 } else 187 mde->virtual_address = contigmalloc(PAGE_SIZE, 188 M_ISCI, M_NOWAIT, 0, BUS_SPACE_MAXADDR, 189 mde->constant_memory_alignment, 0); 190 191 if (mde->virtual_address != NULL) 192 bus_dmamap_load(isci_controller->buffer_dma_tag, 193 NULL, mde->virtual_address, PAGE_SIZE, 194 isci_single_map, &mde->physical_address, 195 BUS_DMA_NOWAIT); 196} 197 198/** 199 * @brief This method will be invoked to allocate memory dynamically. 200 * 201 * @param[in] controller This parameter represents the controller 202 * object for which to allocate memory. 203 * @param[out] mde This parameter represents the memory descriptor to 204 * be filled in by the user that will reference the newly 205 * allocated memory. 206 * 207 * @return none 208 */ 209void scif_cb_controller_free_memory(SCI_CONTROLLER_HANDLE_T controller, 210 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde) 211{ 212 struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *) 213 sci_object_get_association(controller); 214 215 /* 216 * Put the buffer back into the controller's buffer pool, rather 217 * than invoking configfree. This helps reduce chance we won't 218 * have buffers available when system is under memory pressure. 219 */ 220 sci_pool_put(isci_controller->unmap_buffer_pool, 221 mde->virtual_address); 222} 223 224void isci_controller_construct(struct ISCI_CONTROLLER *controller, 225 struct isci_softc *isci) 226{ 227 SCI_CONTROLLER_HANDLE_T scif_controller_handle; 228 229 scif_library_allocate_controller(isci->sci_library_handle, 230 &scif_controller_handle); 231 232 scif_controller_construct(isci->sci_library_handle, 233 scif_controller_handle, NULL); 234 235 controller->isci = isci; 236 controller->scif_controller_handle = scif_controller_handle; 237 238 /* This allows us to later use 239 * sci_object_get_association(scif_controller_handle) 240 * inside of a callback routine to get our struct ISCI_CONTROLLER object 241 */ 242 sci_object_set_association(scif_controller_handle, (void *)controller); 243 244 controller->is_started = FALSE; 245 controller->is_frozen = FALSE; 246 controller->release_queued_ccbs = FALSE; 247 controller->sim = NULL; 248 controller->initial_discovery_mask = 0; 249 250 sci_fast_list_init(&controller->pending_device_reset_list); 251 252 mtx_init(&controller->lock, "isci", NULL, MTX_DEF); 253 254 uint32_t domain_index; 255 256 for(domain_index = 0; domain_index < SCI_MAX_DOMAINS; domain_index++) { 257 isci_domain_construct( &controller->domain[domain_index], 258 domain_index, controller); 259 } 260 261 controller->timer_memory = malloc( 262 sizeof(struct ISCI_TIMER) * SCI_MAX_TIMERS, M_ISCI, 263 M_NOWAIT | M_ZERO); 264 265 sci_pool_initialize(controller->timer_pool); 266 267 struct ISCI_TIMER *timer = (struct ISCI_TIMER *) 268 controller->timer_memory; 269 270 for ( int i = 0; i < SCI_MAX_TIMERS; i++ ) { 271 sci_pool_put(controller->timer_pool, timer++); 272 } 273 274 sci_pool_initialize(controller->unmap_buffer_pool); 275} 276 277static void isci_led_func(void *priv, int onoff) 278{ 279 struct ISCI_LED *led = priv; 280 281 /* map onoff to the locate LED */ 282 scic_sgpio_update_led_state(led->handle, 1 << led->index, 0, onoff, 0); 283} 284 285SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller) 286{ 287 SCIC_USER_PARAMETERS_T scic_user_parameters; 288 SCI_CONTROLLER_HANDLE_T scic_controller_handle; 289 char led_name[64]; 290 unsigned long tunable; 291 int i; 292 293 scic_controller_handle = 294 scif_controller_get_scic_handle(controller->scif_controller_handle); 295 296 if (controller->isci->oem_parameters_found == TRUE) 297 { 298 scic_oem_parameters_set( 299 scic_controller_handle, 300 &controller->oem_parameters, 301 (uint8_t)(controller->oem_parameters_version)); 302 } 303 304 scic_user_parameters_get(scic_controller_handle, &scic_user_parameters); 305 306 if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable)) 307 scic_user_parameters.sds1.no_outbound_task_timeout = 308 (uint8_t)tunable; 309 310 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable)) 311 scic_user_parameters.sds1.ssp_max_occupancy_timeout = 312 (uint16_t)tunable; 313 314 if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable)) 315 scic_user_parameters.sds1.stp_max_occupancy_timeout = 316 (uint16_t)tunable; 317 318 if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable)) 319 scic_user_parameters.sds1.ssp_inactivity_timeout = 320 (uint16_t)tunable; 321 322 if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable)) 323 scic_user_parameters.sds1.stp_inactivity_timeout = 324 (uint16_t)tunable; 325 326 if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable)) 327 for (i = 0; i < SCI_MAX_PHYS; i++) 328 scic_user_parameters.sds1.phys[i].max_speed_generation = 329 (uint8_t)tunable; 330 331 scic_user_parameters_set(scic_controller_handle, &scic_user_parameters); 332 333 /* Scheduler bug in SCU requires SCIL to reserve some task contexts as a 334 * a workaround - one per domain. 335 */ 336 controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS; 337 338 if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth", 339 &controller->queue_depth)) { 340 controller->queue_depth = max(1, min(controller->queue_depth, 341 SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS)); 342 } 343 344 /* Reserve one request so that we can ensure we have one available TC 345 * to do internal device resets. 346 */ 347 controller->sim_queue_depth = controller->queue_depth - 1; 348 349 /* Although we save one TC to do internal device resets, it is possible 350 * we could end up using several TCs for simultaneous device resets 351 * while at the same time having CAM fill our controller queue. To 352 * simulate this condition, and how our driver handles it, we can set 353 * this io_shortage parameter, which will tell CAM that we have a 354 * large queue depth than we really do. 355 */ 356 uint32_t io_shortage = 0; 357 TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage); 358 controller->sim_queue_depth += io_shortage; 359 360 /* Attach to CAM using xpt_bus_register now, then immediately freeze 361 * the simq. It will get released later when initial domain discovery 362 * is complete. 363 */ 364 controller->has_been_scanned = FALSE; 365 mtx_lock(&controller->lock); 366 isci_controller_attach_to_cam(controller); 367 xpt_freeze_simq(controller->sim, 1); 368 mtx_unlock(&controller->lock); 369 370 for (i = 0; i < SCI_MAX_PHYS; i++) { 371 controller->led[i].handle = scic_controller_handle; 372 controller->led[i].index = i; 373 sprintf(led_name, "isci.bus%d.port%d.locate", 374 controller->index, i); 375 controller->led[i].cdev = led_create(isci_led_func, 376 &controller->led[i], led_name); 377 } 378 379 return (scif_controller_initialize(controller->scif_controller_handle)); 380} 381 382int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller) 383{ 384 int error; 385 device_t device = controller->isci->device; 386 uint32_t max_segment_size = isci_io_request_get_max_io_size(); 387 uint32_t status = 0; 388 struct ISCI_MEMORY *uncached_controller_memory = 389 &controller->uncached_controller_memory; 390 struct ISCI_MEMORY *cached_controller_memory = 391 &controller->cached_controller_memory; 392 struct ISCI_MEMORY *request_memory = 393 &controller->request_memory; 394 POINTER_UINT virtual_address; 395 bus_addr_t physical_address; 396 397 controller->mdl = sci_controller_get_memory_descriptor_list_handle( 398 controller->scif_controller_handle); 399 400 uncached_controller_memory->size = sci_mdl_decorator_get_memory_size( 401 controller->mdl, SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS); 402 403 error = isci_allocate_dma_buffer(device, uncached_controller_memory); 404 405 if (error != 0) 406 return (error); 407 408 sci_mdl_decorator_assign_memory( controller->mdl, 409 SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 410 uncached_controller_memory->virtual_address, 411 uncached_controller_memory->physical_address); 412 413 cached_controller_memory->size = sci_mdl_decorator_get_memory_size( 414 controller->mdl, 415 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS 416 ); 417 418 error = isci_allocate_dma_buffer(device, cached_controller_memory); 419 420 if (error != 0) 421 return (error); 422 423 sci_mdl_decorator_assign_memory(controller->mdl, 424 SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS, 425 cached_controller_memory->virtual_address, 426 cached_controller_memory->physical_address); 427 428 request_memory->size = 429 controller->queue_depth * isci_io_request_get_object_size(); 430 431 error = isci_allocate_dma_buffer(device, request_memory); 432 433 if (error != 0) 434 return (error); 435 436 /* For STP PIO testing, we want to ensure we can force multiple SGLs 437 * since this has been a problem area in SCIL. This tunable parameter 438 * will allow us to force DMA segments to a smaller size, ensuring 439 * that even if a physically contiguous buffer is attached to this 440 * I/O, the DMA subsystem will pass us multiple segments in our DMA 441 * load callback. 442 */ 443 TUNABLE_INT_FETCH("hw.isci.max_segment_size", &max_segment_size); 444 445 /* Create DMA tag for our I/O requests. Then we can create DMA maps based off 446 * of this tag and store them in each of our ISCI_IO_REQUEST objects. This 447 * will enable better performance than creating the DMA maps everytime we get 448 * an I/O. 449 */ 450 status = bus_dma_tag_create(bus_get_dma_tag(device), 0x1, 0x0, 451 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 452 isci_io_request_get_max_io_size(), 453 SCI_MAX_SCATTER_GATHER_ELEMENTS, max_segment_size, 0, NULL, NULL, 454 &controller->buffer_dma_tag); 455 456 sci_pool_initialize(controller->request_pool); 457 458 virtual_address = request_memory->virtual_address; 459 physical_address = request_memory->physical_address; 460 461 for (int i = 0; i < controller->queue_depth; i++) { 462 struct ISCI_REQUEST *request = 463 (struct ISCI_REQUEST *)virtual_address; 464 465 isci_request_construct(request, 466 controller->scif_controller_handle, 467 controller->buffer_dma_tag, physical_address); 468 469 sci_pool_put(controller->request_pool, request); 470 471 virtual_address += isci_request_get_object_size(); 472 physical_address += isci_request_get_object_size(); 473 } 474 475 uint32_t remote_device_size = sizeof(struct ISCI_REMOTE_DEVICE) + 476 scif_remote_device_get_object_size(); 477 478 controller->remote_device_memory = (uint8_t *) malloc( 479 remote_device_size * SCI_MAX_REMOTE_DEVICES, M_ISCI, 480 M_NOWAIT | M_ZERO); 481 482 sci_pool_initialize(controller->remote_device_pool); 483 484 uint8_t *remote_device_memory_ptr = controller->remote_device_memory; 485 486 for (int i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 487 struct ISCI_REMOTE_DEVICE *remote_device = 488 (struct ISCI_REMOTE_DEVICE *)remote_device_memory_ptr; 489 490 controller->remote_device[i] = NULL; 491 remote_device->index = i; 492 remote_device->is_resetting = FALSE; 493 remote_device->frozen_lun_mask = 0; 494 sci_fast_list_element_init(remote_device, 495 &remote_device->pending_device_reset_element); 496 TAILQ_INIT(&remote_device->queued_ccbs); 497 remote_device->release_queued_ccb = FALSE; 498 remote_device->queued_ccb_in_progress = NULL; 499 500 /* 501 * For the first SCI_MAX_DOMAINS device objects, do not put 502 * them in the pool, rather assign them to each domain. This 503 * ensures that any device attached directly to port "i" will 504 * always get CAM target id "i". 505 */ 506 if (i < SCI_MAX_DOMAINS) 507 controller->domain[i].da_remote_device = remote_device; 508 else 509 sci_pool_put(controller->remote_device_pool, 510 remote_device); 511 remote_device_memory_ptr += remote_device_size; 512 } 513 514 return (0); 515} 516 517void isci_controller_start(void *controller_handle) 518{ 519 struct ISCI_CONTROLLER *controller = 520 (struct ISCI_CONTROLLER *)controller_handle; 521 SCI_CONTROLLER_HANDLE_T scif_controller_handle = 522 controller->scif_controller_handle; 523 524 scif_controller_start(scif_controller_handle, 525 scif_controller_get_suggested_start_timeout(scif_controller_handle)); 526 527 scic_controller_enable_interrupts( 528 scif_controller_get_scic_handle(controller->scif_controller_handle)); 529} 530 531void isci_controller_domain_discovery_complete( 532 struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain) 533{ 534 if (!isci_controller->has_been_scanned) 535 { 536 /* Controller has not been scanned yet. We'll clear 537 * the discovery bit for this domain, then check if all bits 538 * are now clear. That would indicate that all domains are 539 * done with discovery and we can then proceed with initial 540 * scan. 541 */ 542 543 isci_controller->initial_discovery_mask &= 544 ~(1 << isci_domain->index); 545 546 if (isci_controller->initial_discovery_mask == 0) { 547 struct isci_softc *driver = isci_controller->isci; 548 uint8_t next_index = isci_controller->index + 1; 549 550 isci_controller->has_been_scanned = TRUE; 551 552 /* Unfreeze simq to allow initial scan to proceed. */ 553 xpt_release_simq(isci_controller->sim, TRUE); 554 555#if __FreeBSD_version < 800000 556 /* When driver is loaded after boot, we need to 557 * explicitly rescan here for versions <8.0, because 558 * CAM only automatically scans new buses at boot 559 * time. 560 */ 561 union ccb *ccb = xpt_alloc_ccb_nowait(); 562 563 xpt_create_path(&ccb->ccb_h.path, xpt_periph, 564 cam_sim_path(isci_controller->sim), 565 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 566 567 xpt_rescan(ccb); 568#endif 569 570 if (next_index < driver->controller_count) { 571 /* There are more controllers that need to 572 * start. So start the next one. 573 */ 574 isci_controller_start( 575 &driver->controllers[next_index]); 576 } 577 else 578 { 579 /* All controllers have been started and completed discovery. 580 * Disestablish the config hook while will signal to the 581 * kernel during boot that it is safe to try to find and 582 * mount the root partition. 583 */ 584 config_intrhook_disestablish( 585 &driver->config_hook); 586 } 587 } 588 } 589} 590 591int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller) 592{ 593 struct isci_softc *isci = controller->isci; 594 device_t parent = device_get_parent(isci->device); 595 int unit = device_get_unit(isci->device); 596 struct cam_devq *isci_devq = cam_simq_alloc(controller->sim_queue_depth); 597 598 if(isci_devq == NULL) { 599 isci_log_message(0, "ISCI", "isci_devq is NULL \n"); 600 return (-1); 601 } 602 603 controller->sim = cam_sim_alloc(isci_action, isci_poll, "isci", 604 controller, unit, &controller->lock, controller->sim_queue_depth, 605 controller->sim_queue_depth, isci_devq); 606 607 if(controller->sim == NULL) { 608 isci_log_message(0, "ISCI", "cam_sim_alloc... fails\n"); 609 cam_simq_free(isci_devq); 610 return (-1); 611 } 612 613 if(xpt_bus_register(controller->sim, parent, controller->index) 614 != CAM_SUCCESS) { 615 isci_log_message(0, "ISCI", "xpt_bus_register...fails \n"); 616 cam_sim_free(controller->sim, TRUE); 617 mtx_unlock(&controller->lock); 618 return (-1); 619 } 620 621 if(xpt_create_path(&controller->path, NULL, 622 cam_sim_path(controller->sim), CAM_TARGET_WILDCARD, 623 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 624 isci_log_message(0, "ISCI", "xpt_create_path....fails\n"); 625 xpt_bus_deregister(cam_sim_path(controller->sim)); 626 cam_sim_free(controller->sim, TRUE); 627 mtx_unlock(&controller->lock); 628 return (-1); 629 } 630 631 return (0); 632} 633 634void isci_poll(struct cam_sim *sim) 635{ 636 struct ISCI_CONTROLLER *controller = 637 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 638 639 isci_interrupt_poll_handler(controller); 640} 641 642void isci_action(struct cam_sim *sim, union ccb *ccb) 643{ 644 struct ISCI_CONTROLLER *controller = 645 (struct ISCI_CONTROLLER *)cam_sim_softc(sim); 646 647 switch ( ccb->ccb_h.func_code ) { 648 case XPT_PATH_INQ: 649 { 650 struct ccb_pathinq *cpi = &ccb->cpi; 651 int bus = cam_sim_bus(sim); 652 ccb->ccb_h.ccb_sim_ptr = sim; 653 cpi->version_num = 1; 654 cpi->hba_inquiry = PI_TAG_ABLE; 655 cpi->target_sprt = 0; 656 cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN; 657 cpi->hba_eng_cnt = 0; 658 cpi->max_target = SCI_MAX_REMOTE_DEVICES - 1; 659 cpi->max_lun = ISCI_MAX_LUN; 660#if __FreeBSD_version >= 800102 661 cpi->maxio = isci_io_request_get_max_io_size(); 662#endif 663 cpi->unit_number = cam_sim_unit(sim); 664 cpi->bus_id = bus; 665 cpi->initiator_id = SCI_MAX_REMOTE_DEVICES; 666 cpi->base_transfer_speed = 300000; 667 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 668 strncpy(cpi->hba_vid, "Intel Corp.", HBA_IDLEN); 669 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 670 cpi->transport = XPORT_SAS; 671 cpi->transport_version = 0; 672 cpi->protocol = PROTO_SCSI; 673 cpi->protocol_version = SCSI_REV_SPC2; 674 cpi->ccb_h.status = CAM_REQ_CMP; 675 xpt_done(ccb); 676 } 677 break; 678 case XPT_GET_TRAN_SETTINGS: 679 { 680 struct ccb_trans_settings *general_settings = &ccb->cts; 681 struct ccb_trans_settings_sas *sas_settings = 682 &general_settings->xport_specific.sas; 683 struct ccb_trans_settings_scsi *scsi_settings = 684 &general_settings->proto_specific.scsi; 685 struct ISCI_REMOTE_DEVICE *remote_device; 686 687 remote_device = controller->remote_device[ccb->ccb_h.target_id]; 688 689 if (remote_device == NULL) { 690 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 691 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 692 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 693 xpt_done(ccb); 694 break; 695 } 696 697 general_settings->protocol = PROTO_SCSI; 698 general_settings->transport = XPORT_SAS; 699 general_settings->protocol_version = SCSI_REV_SPC2; 700 general_settings->transport_version = 0; 701 scsi_settings->valid = CTS_SCSI_VALID_TQ; 702 scsi_settings->flags = CTS_SCSI_FLAGS_TAG_ENB; 703 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 704 ccb->ccb_h.status |= CAM_REQ_CMP; 705 706 sas_settings->bitrate = 707 isci_remote_device_get_bitrate(remote_device); 708 709 if (sas_settings->bitrate != 0) 710 sas_settings->valid = CTS_SAS_VALID_SPEED; 711 712 xpt_done(ccb); 713 } 714 break; 715 case XPT_SCSI_IO: 716 isci_io_request_execute_scsi_io(ccb, controller); 717 break; 718#if __FreeBSD_version >= 900026 719 case XPT_SMP_IO: 720 isci_io_request_execute_smp_io(ccb, controller); 721 break; 722#endif 723 case XPT_SET_TRAN_SETTINGS: 724 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 725 ccb->ccb_h.status |= CAM_REQ_CMP; 726 xpt_done(ccb); 727 break; 728 case XPT_CALC_GEOMETRY: 729 cam_calc_geometry(&ccb->ccg, /*extended*/1); 730 xpt_done(ccb); 731 break; 732 case XPT_RESET_DEV: 733 { 734 struct ISCI_REMOTE_DEVICE *remote_device = 735 controller->remote_device[ccb->ccb_h.target_id]; 736 737 if (remote_device != NULL) 738 isci_remote_device_reset(remote_device, ccb); 739 else { 740 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 741 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 742 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 743 xpt_done(ccb); 744 } 745 } 746 break; 747 case XPT_RESET_BUS: 748 ccb->ccb_h.status = CAM_REQ_CMP; 749 xpt_done(ccb); 750 break; 751 default: 752 isci_log_message(0, "ISCI", "Unhandled func_code 0x%x\n", 753 ccb->ccb_h.func_code); 754 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 755 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 756 ccb->ccb_h.status |= CAM_REQ_INVALID; 757 xpt_done(ccb); 758 break; 759 } 760} 761 762/* 763 * Unfortunately, SCIL doesn't cleanly handle retry conditions. 764 * CAM_REQUEUE_REQ works only when no one is using the pass(4) interface. So 765 * when SCIL denotes an I/O needs to be retried (typically because of mixing 766 * tagged/non-tagged ATA commands, or running out of NCQ slots), we queue 767 * these I/O internally. Once SCIL completes an I/O to this device, or we get 768 * a ready notification, we will retry the first I/O on the queue. 769 * Unfortunately, SCIL also doesn't cleanly handle starting the new I/O within 770 * the context of the completion handler, so we need to retry these I/O after 771 * the completion handler is done executing. 772 */ 773void 774isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller) 775{ 776 struct ISCI_REMOTE_DEVICE *dev; 777 struct ccb_hdr *ccb_h; 778 int dev_idx; 779 780 KASSERT(mtx_owned(&controller->lock), ("controller lock not owned")); 781 782 controller->release_queued_ccbs = FALSE; 783 for (dev_idx = 0; 784 dev_idx < SCI_MAX_REMOTE_DEVICES; 785 dev_idx++) { 786 787 dev = controller->remote_device[dev_idx]; 788 if (dev != NULL && 789 dev->release_queued_ccb == TRUE && 790 dev->queued_ccb_in_progress == NULL) { 791 dev->release_queued_ccb = FALSE; 792 ccb_h = TAILQ_FIRST(&dev->queued_ccbs); 793 794 if (ccb_h == NULL) 795 continue; 796 797 isci_log_message(1, "ISCI", "release %p %x\n", ccb_h, 798 ((union ccb *)ccb_h)->csio.cdb_io.cdb_bytes[0]); 799 800 dev->queued_ccb_in_progress = (union ccb *)ccb_h; 801 isci_io_request_execute_scsi_io( 802 (union ccb *)ccb_h, controller); 803 } 804 } 805} 806