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 <cam/scsi/scsi_all.h> 37 #include <cam/scsi/scsi_message.h> 38 39 #include <dev/isci/scil/intel_sas.h> 40 41 #include <dev/isci/scil/sci_util.h> 42 43 #include <dev/isci/scil/scif_io_request.h> 44 #include <dev/isci/scil/scif_controller.h> 45 #include <dev/isci/scil/scif_remote_device.h> 46 #include <dev/isci/scil/scif_user_callback.h> 47 48 #include <dev/isci/scil/scic_io_request.h> 49 #include <dev/isci/scil/scic_user_callback.h> 50 51 /** 52 * @brief This user callback will inform the user that an IO request has 53 * completed. 54 * 55 * @param[in] controller This parameter specifies the controller on 56 * which the IO request is completing. 57 * @param[in] remote_device This parameter specifies the remote device on 58 * which this request is completing. 59 * @param[in] io_request This parameter specifies the IO request that has 60 * completed. 61 * @param[in] completion_status This parameter specifies the results of 62 * the IO request operation. SCI_IO_SUCCESS indicates 63 * successful completion. 64 * 65 * @return none 66 */ 67 void 68 scif_cb_io_request_complete(SCI_CONTROLLER_HANDLE_T scif_controller, 69 SCI_REMOTE_DEVICE_HANDLE_T remote_device, 70 SCI_IO_REQUEST_HANDLE_T io_request, SCI_IO_STATUS completion_status) 71 { 72 struct ISCI_IO_REQUEST *isci_request = 73 (struct ISCI_IO_REQUEST *)sci_object_get_association(io_request); 74 75 scif_controller_complete_io(scif_controller, remote_device, io_request); 76 isci_io_request_complete(scif_controller, remote_device, isci_request, 77 completion_status); 78 } 79 80 void 81 isci_io_request_complete(SCI_CONTROLLER_HANDLE_T scif_controller, 82 SCI_REMOTE_DEVICE_HANDLE_T remote_device, 83 struct ISCI_IO_REQUEST *isci_request, SCI_IO_STATUS completion_status) 84 { 85 struct ISCI_CONTROLLER *isci_controller; 86 struct ISCI_REMOTE_DEVICE *isci_remote_device; 87 union ccb *ccb; 88 BOOL complete_ccb; 89 90 complete_ccb = TRUE; 91 isci_controller = (struct ISCI_CONTROLLER *) sci_object_get_association(scif_controller); 92 isci_remote_device = 93 (struct ISCI_REMOTE_DEVICE *) sci_object_get_association(remote_device); 94 95 ccb = isci_request->ccb; 96 97 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 98 99 switch (completion_status) { 100 case SCI_IO_SUCCESS: 101 case SCI_IO_SUCCESS_COMPLETE_BEFORE_START: 102 #if __FreeBSD_version >= 900026 103 if (ccb->ccb_h.func_code == XPT_SMP_IO) { 104 void *smp_response = 105 scif_io_request_get_response_iu_address( 106 isci_request->sci_object); 107 108 memcpy(ccb->smpio.smp_response, smp_response, 109 ccb->smpio.smp_response_len); 110 } 111 #endif 112 ccb->ccb_h.status |= CAM_REQ_CMP; 113 break; 114 115 case SCI_IO_SUCCESS_IO_DONE_EARLY: 116 ccb->ccb_h.status |= CAM_REQ_CMP; 117 ccb->csio.resid = ccb->csio.dxfer_len - 118 scif_io_request_get_number_of_bytes_transferred( 119 isci_request->sci_object); 120 break; 121 122 case SCI_IO_FAILURE_RESPONSE_VALID: 123 { 124 SCI_SSP_RESPONSE_IU_T * response_buffer; 125 uint32_t sense_length; 126 int error_code, sense_key, asc, ascq; 127 struct ccb_scsiio *csio = &ccb->csio; 128 129 response_buffer = (SCI_SSP_RESPONSE_IU_T *) 130 scif_io_request_get_response_iu_address( 131 isci_request->sci_object); 132 133 sense_length = sci_ssp_get_sense_data_length( 134 response_buffer->sense_data_length); 135 136 sense_length = MIN(csio->sense_len, sense_length); 137 138 memcpy(&csio->sense_data, response_buffer->data, sense_length); 139 140 csio->sense_resid = csio->sense_len - sense_length; 141 csio->scsi_status = response_buffer->status; 142 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 143 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 144 scsi_extract_sense( &csio->sense_data, &error_code, &sense_key, 145 &asc, &ascq ); 146 isci_log_message(1, "ISCI", 147 "isci: bus=%x target=%x lun=%x cdb[0]=%x status=%x key=%x asc=%x ascq=%x\n", 148 ccb->ccb_h.path_id, ccb->ccb_h.target_id, 149 ccb->ccb_h.target_lun, csio->cdb_io.cdb_bytes[0], 150 csio->scsi_status, sense_key, asc, ascq); 151 break; 152 } 153 154 case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED: 155 isci_remote_device_reset(isci_remote_device, NULL); 156 157 /* drop through */ 158 case SCI_IO_FAILURE_TERMINATED: 159 ccb->ccb_h.status |= CAM_REQ_TERMIO; 160 isci_log_message(1, "ISCI", 161 "isci: bus=%x target=%x lun=%x cdb[0]=%x terminated\n", 162 ccb->ccb_h.path_id, ccb->ccb_h.target_id, 163 ccb->ccb_h.target_lun, ccb->csio.cdb_io.cdb_bytes[0]); 164 break; 165 166 case SCI_IO_FAILURE_INVALID_STATE: 167 case SCI_IO_FAILURE_INSUFFICIENT_RESOURCES: 168 complete_ccb = FALSE; 169 break; 170 171 case SCI_IO_FAILURE_INVALID_REMOTE_DEVICE: 172 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 173 break; 174 175 case SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE: 176 { 177 struct ccb_relsim ccb_relsim; 178 struct cam_path *path; 179 180 xpt_create_path(&path, NULL, 181 cam_sim_path(isci_controller->sim), 182 isci_remote_device->index, 0); 183 184 xpt_setup_ccb(&ccb_relsim.ccb_h, path, 5); 185 ccb_relsim.ccb_h.func_code = XPT_REL_SIMQ; 186 ccb_relsim.ccb_h.flags = CAM_DEV_QFREEZE; 187 ccb_relsim.release_flags = RELSIM_ADJUST_OPENINGS; 188 ccb_relsim.openings = 189 scif_remote_device_get_max_queue_depth(remote_device); 190 xpt_action((union ccb *)&ccb_relsim); 191 xpt_free_path(path); 192 complete_ccb = FALSE; 193 } 194 break; 195 196 case SCI_IO_FAILURE: 197 case SCI_IO_FAILURE_REQUIRES_SCSI_ABORT: 198 case SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL: 199 case SCI_IO_FAILURE_PROTOCOL_VIOLATION: 200 case SCI_IO_FAILURE_INVALID_PARAMETER_VALUE: 201 case SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR: 202 default: 203 isci_log_message(1, "ISCI", 204 "isci: bus=%x target=%x lun=%x cdb[0]=%x completion status=%x\n", 205 ccb->ccb_h.path_id, ccb->ccb_h.target_id, 206 ccb->ccb_h.target_lun, ccb->csio.cdb_io.cdb_bytes[0], 207 completion_status); 208 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 209 break; 210 } 211 212 callout_stop(&isci_request->parent.timer); 213 bus_dmamap_sync(isci_request->parent.dma_tag, 214 isci_request->parent.dma_map, 215 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 216 217 bus_dmamap_unload(isci_request->parent.dma_tag, 218 isci_request->parent.dma_map); 219 220 isci_request->ccb = NULL; 221 222 sci_pool_put(isci_controller->request_pool, 223 (struct ISCI_REQUEST *)isci_request); 224 225 if (complete_ccb) { 226 if (ccb->ccb_h.status != CAM_REQ_CMP) { 227 /* ccb will be completed with some type of non-success 228 * status. So temporarily freeze the queue until the 229 * upper layers can act on the status. The 230 * CAM_DEV_QFRZN flag will then release the queue 231 * after the status is acted upon. 232 */ 233 ccb->ccb_h.status |= CAM_DEV_QFRZN; 234 xpt_freeze_devq(ccb->ccb_h.path, 1); 235 } 236 237 if (isci_remote_device->frozen_lun_mask != 0) { 238 isci_remote_device_release_device_queue(isci_remote_device); 239 } 240 241 xpt_done(ccb); 242 243 if (isci_controller->is_frozen == TRUE) { 244 isci_controller->is_frozen = FALSE; 245 xpt_release_simq(isci_controller->sim, TRUE); 246 } 247 } else { 248 isci_remote_device_freeze_lun_queue(isci_remote_device, 249 ccb->ccb_h.target_lun); 250 251 isci_log_message(1, "ISCI", "queue %p %x\n", ccb, 252 ccb->csio.cdb_io.cdb_bytes[0]); 253 ccb->ccb_h.status |= CAM_SIM_QUEUED; 254 TAILQ_INSERT_TAIL(&isci_remote_device->queued_ccbs, 255 &ccb->ccb_h, sim_links.tqe); 256 } 257 } 258 259 /** 260 * @brief This callback method asks the user to provide the physical 261 * address for the supplied virtual address when building an 262 * io request object. 263 * 264 * @param[in] controller This parameter is the core controller object 265 * handle. 266 * @param[in] io_request This parameter is the io request object handle 267 * for which the physical address is being requested. 268 * @param[in] virtual_address This paramter is the virtual address which 269 * is to be returned as a physical address. 270 * @param[out] physical_address The physical address for the supplied virtual 271 * address. 272 * 273 * @return None. 274 */ 275 void 276 scic_cb_io_request_get_physical_address(SCI_CONTROLLER_HANDLE_T controller, 277 SCI_IO_REQUEST_HANDLE_T io_request, void *virtual_address, 278 SCI_PHYSICAL_ADDRESS *physical_address) 279 { 280 SCI_IO_REQUEST_HANDLE_T scif_request = 281 sci_object_get_association(io_request); 282 struct ISCI_REQUEST *isci_request = 283 sci_object_get_association(scif_request); 284 285 if(isci_request != NULL) { 286 /* isci_request is not NULL, meaning this is a request initiated 287 * by CAM or the isci layer (i.e. device reset for I/O 288 * timeout). Therefore we can calculate the physical address 289 * based on the address we stored in the struct ISCI_REQUEST 290 * object. 291 */ 292 *physical_address = isci_request->physical_address + 293 (uintptr_t)virtual_address - 294 (uintptr_t)isci_request; 295 } else { 296 /* isci_request is NULL, meaning this is a request generated 297 * internally by SCIL (i.e. for SMP requests or NCQ error 298 * recovery). Therefore we calculate the physical address 299 * based on the controller's uncached controller memory buffer, 300 * since we know that this is what SCIL uses for internal 301 * framework requests. 302 */ 303 SCI_CONTROLLER_HANDLE_T scif_controller = 304 (SCI_CONTROLLER_HANDLE_T) sci_object_get_association(controller); 305 struct ISCI_CONTROLLER *isci_controller = 306 (struct ISCI_CONTROLLER *)sci_object_get_association(scif_controller); 307 U64 virt_addr_offset = (uintptr_t)virtual_address - 308 (U64)isci_controller->uncached_controller_memory.virtual_address; 309 310 *physical_address = 311 isci_controller->uncached_controller_memory.physical_address 312 + virt_addr_offset; 313 } 314 } 315 316 /** 317 * @brief This callback method asks the user to provide the address for 318 * the command descriptor block (CDB) associated with this IO request. 319 * 320 * @param[in] scif_user_io_request This parameter points to the user's 321 * IO request object. It is a cookie that allows the user to 322 * provide the necessary information for this callback. 323 * 324 * @return This method returns the virtual address of the CDB. 325 */ 326 void * 327 scif_cb_io_request_get_cdb_address(void * scif_user_io_request) 328 { 329 struct ISCI_IO_REQUEST *isci_request = 330 (struct ISCI_IO_REQUEST *)scif_user_io_request; 331 332 return (isci_request->ccb->csio.cdb_io.cdb_bytes); 333 } 334 335 /** 336 * @brief This callback method asks the user to provide the length of 337 * the command descriptor block (CDB) associated with this IO request. 338 * 339 * @param[in] scif_user_io_request This parameter points to the user's 340 * IO request object. It is a cookie that allows the user to 341 * provide the necessary information for this callback. 342 * 343 * @return This method returns the length of the CDB. 344 */ 345 uint32_t 346 scif_cb_io_request_get_cdb_length(void * scif_user_io_request) 347 { 348 struct ISCI_IO_REQUEST *isci_request = 349 (struct ISCI_IO_REQUEST *)scif_user_io_request; 350 351 return (isci_request->ccb->csio.cdb_len); 352 } 353 354 /** 355 * @brief This callback method asks the user to provide the Logical Unit (LUN) 356 * associated with this IO request. 357 * 358 * @note The contents of the value returned from this callback are defined 359 * by the protocol standard (e.g. T10 SAS specification). Please 360 * refer to the transport command information unit description 361 * in the associated standard. 362 * 363 * @param[in] scif_user_io_request This parameter points to the user's 364 * IO request object. It is a cookie that allows the user to 365 * provide the necessary information for this callback. 366 * 367 * @return This method returns the LUN associated with this request. 368 */ 369 uint32_t 370 scif_cb_io_request_get_lun(void * scif_user_io_request) 371 { 372 struct ISCI_IO_REQUEST *isci_request = 373 (struct ISCI_IO_REQUEST *)scif_user_io_request; 374 375 return (isci_request->ccb->ccb_h.target_lun); 376 } 377 378 /** 379 * @brief This callback method asks the user to provide the task attribute 380 * associated with this IO request. 381 * 382 * @note The contents of the value returned from this callback are defined 383 * by the protocol standard (e.g. T10 SAS specification). Please 384 * refer to the transport command information unit description 385 * in the associated standard. 386 * 387 * @param[in] scif_user_io_request This parameter points to the user's 388 * IO request object. It is a cookie that allows the user to 389 * provide the necessary information for this callback. 390 * 391 * @return This method returns the task attribute associated with this 392 * IO request. 393 */ 394 uint32_t 395 scif_cb_io_request_get_task_attribute(void * scif_user_io_request) 396 { 397 struct ISCI_IO_REQUEST *isci_request = 398 (struct ISCI_IO_REQUEST *)scif_user_io_request; 399 uint32_t task_attribute; 400 401 if((isci_request->ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) 402 switch(isci_request->ccb->csio.tag_action) { 403 case MSG_HEAD_OF_Q_TAG: 404 task_attribute = SCI_SAS_HEAD_OF_QUEUE_ATTRIBUTE; 405 break; 406 407 case MSG_ORDERED_Q_TAG: 408 task_attribute = SCI_SAS_ORDERED_ATTRIBUTE; 409 break; 410 411 case MSG_ACA_TASK: 412 task_attribute = SCI_SAS_ACA_ATTRIBUTE; 413 break; 414 415 default: 416 task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE; 417 break; 418 } 419 else 420 task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE; 421 422 return (task_attribute); 423 } 424 425 /** 426 * @brief This callback method asks the user to provide the command priority 427 * associated with this IO request. 428 * 429 * @note The contents of the value returned from this callback are defined 430 * by the protocol standard (e.g. T10 SAS specification). Please 431 * refer to the transport command information unit description 432 * in the associated standard. 433 * 434 * @param[in] scif_user_io_request This parameter points to the user's 435 * IO request object. It is a cookie that allows the user to 436 * provide the necessary information for this callback. 437 * 438 * @return This method returns the command priority associated with this 439 * IO request. 440 */ 441 uint32_t 442 scif_cb_io_request_get_command_priority(void * scif_user_io_request) 443 { 444 return (0); 445 } 446 447 /** 448 * @brief This method simply returns the virtual address associated 449 * with the scsi_io and byte_offset supplied parameters. 450 * 451 * @note This callback is not utilized in the fast path. The expectation 452 * is that this method is utilized for items such as SCSI to ATA 453 * translation for commands like INQUIRY, READ CAPACITY, etc. 454 * 455 * @param[in] scif_user_io_request This parameter points to the user's 456 * IO request object. It is a cookie that allows the user to 457 * provide the necessary information for this callback. 458 * @param[in] byte_offset This parameter specifies the offset into the data 459 * buffers pointed to by the SGL. The byte offset starts at 0 460 * and continues until the last byte pointed to be the last SGL 461 * element. 462 * 463 * @return A virtual address pointer to the location specified by the 464 * parameters. 465 */ 466 uint8_t * 467 scif_cb_io_request_get_virtual_address_from_sgl(void * scif_user_io_request, 468 uint32_t byte_offset) 469 { 470 struct ISCI_IO_REQUEST *isci_request = 471 (struct ISCI_IO_REQUEST *)scif_user_io_request; 472 473 return (isci_request->ccb->csio.data_ptr + byte_offset); 474 } 475 476 /** 477 * @brief This callback method asks the user to provide the number of 478 * bytes to be transfered as part of this request. 479 * 480 * @param[in] scif_user_io_request This parameter points to the user's 481 * IO request object. It is a cookie that allows the user to 482 * provide the necessary information for this callback. 483 * 484 * @return This method returns the number of payload data bytes to be 485 * transfered for this IO request. 486 */ 487 uint32_t 488 scif_cb_io_request_get_transfer_length(void * scif_user_io_request) 489 { 490 struct ISCI_IO_REQUEST *isci_request = 491 (struct ISCI_IO_REQUEST *)scif_user_io_request; 492 493 return (isci_request->ccb->csio.dxfer_len); 494 495 } 496 497 /** 498 * @brief This callback method asks the user to provide the data direction 499 * for this request. 500 * 501 * @param[in] scif_user_io_request This parameter points to the user's 502 * IO request object. It is a cookie that allows the user to 503 * provide the necessary information for this callback. 504 * 505 * @return This method returns the value of SCI_IO_REQUEST_DATA_OUT, 506 * SCI_IO_REQUEST_DATA_IN, or SCI_IO_REQUEST_NO_DATA. 507 */ 508 SCI_IO_REQUEST_DATA_DIRECTION 509 scif_cb_io_request_get_data_direction(void * scif_user_io_request) 510 { 511 struct ISCI_IO_REQUEST *isci_request = 512 (struct ISCI_IO_REQUEST *)scif_user_io_request; 513 514 switch (isci_request->ccb->ccb_h.flags & CAM_DIR_MASK) { 515 case CAM_DIR_IN: 516 return (SCI_IO_REQUEST_DATA_IN); 517 case CAM_DIR_OUT: 518 return (SCI_IO_REQUEST_DATA_OUT); 519 default: 520 return (SCI_IO_REQUEST_NO_DATA); 521 } 522 } 523 524 /** 525 * @brief This callback method asks the user to provide the address 526 * to where the next Scatter-Gather Element is located. 527 * 528 * Details regarding usage: 529 * - Regarding the first SGE: the user should initialize an index, 530 * or a pointer, prior to construction of the request that will 531 * reference the very first scatter-gather element. This is 532 * important since this method is called for every scatter-gather 533 * element, including the first element. 534 * - Regarding the last SGE: the user should return NULL from this 535 * method when this method is called and the SGL has exhausted 536 * all elements. 537 * 538 * @param[in] scif_user_io_request This parameter points to the user's 539 * IO request object. It is a cookie that allows the user to 540 * provide the necessary information for this callback. 541 * @param[in] current_sge_address This parameter specifies the address for 542 * the current SGE (i.e. the one that has just processed). 543 * @param[out] next_sge An address specifying the location for the next scatter 544 * gather element to be processed. 545 * 546 * @return None. 547 */ 548 void 549 scif_cb_io_request_get_next_sge(void * scif_user_io_request, 550 void * current_sge_address, void ** next_sge) 551 { 552 struct ISCI_IO_REQUEST *isci_request = 553 (struct ISCI_IO_REQUEST *)scif_user_io_request; 554 555 if (isci_request->current_sge_index == isci_request->num_segments) 556 *next_sge = NULL; 557 else { 558 bus_dma_segment_t *sge = 559 &isci_request->sge[isci_request->current_sge_index]; 560 561 isci_request->current_sge_index++; 562 *next_sge = sge; 563 } 564 } 565 566 /** 567 * @brief This callback method asks the user to provide the contents of the 568 * "address" field in the Scatter-Gather Element. 569 * 570 * @param[in] scif_user_io_request This parameter points to the user's 571 * IO request object. It is a cookie that allows the user to 572 * provide the necessary information for this callback. 573 * @param[in] sge_address This parameter specifies the address for the 574 * SGE from which to retrieve the address field. 575 * 576 * @return A physical address specifying the contents of the SGE's address 577 * field. 578 */ 579 SCI_PHYSICAL_ADDRESS 580 scif_cb_sge_get_address_field(void *scif_user_io_request, void *sge_address) 581 { 582 bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address; 583 584 return ((SCI_PHYSICAL_ADDRESS)sge->ds_addr); 585 } 586 587 /** 588 * @brief This callback method asks the user to provide the contents of the 589 * "length" field in the Scatter-Gather Element. 590 * 591 * @param[in] scif_user_io_request This parameter points to the user's 592 * IO request object. It is a cookie that allows the user to 593 * provide the necessary information for this callback. 594 * @param[in] sge_address This parameter specifies the address for the 595 * SGE from which to retrieve the address field. 596 * 597 * @return This method returns the length field specified inside the SGE 598 * referenced by the sge_address parameter. 599 */ 600 uint32_t 601 scif_cb_sge_get_length_field(void *scif_user_io_request, void *sge_address) 602 { 603 bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address; 604 605 return ((uint32_t)sge->ds_len); 606 } 607 608 void 609 isci_request_construct(struct ISCI_REQUEST *request, 610 SCI_CONTROLLER_HANDLE_T scif_controller_handle, 611 bus_dma_tag_t io_buffer_dma_tag, bus_addr_t physical_address) 612 { 613 614 request->controller_handle = scif_controller_handle; 615 request->dma_tag = io_buffer_dma_tag; 616 request->physical_address = physical_address; 617 bus_dmamap_create(request->dma_tag, 0, &request->dma_map); 618 callout_init(&request->timer, CALLOUT_MPSAFE); 619 } 620 621 static void 622 isci_io_request_construct(void *arg, bus_dma_segment_t *seg, int nseg, 623 int error) 624 { 625 union ccb *ccb; 626 struct ISCI_IO_REQUEST *io_request = (struct ISCI_IO_REQUEST *)arg; 627 SCI_REMOTE_DEVICE_HANDLE_T *device = io_request->parent.remote_device_handle; 628 SCI_STATUS status; 629 630 io_request->num_segments = nseg; 631 io_request->sge = seg; 632 ccb = io_request->ccb; 633 634 /* XXX More cleanup is needed here */ 635 if ((nseg == 0) || (error != 0)) { 636 ccb->ccb_h.status = CAM_REQ_INVALID; 637 xpt_done(ccb); 638 return; 639 } 640 641 status = scif_io_request_construct( 642 io_request->parent.controller_handle, 643 io_request->parent.remote_device_handle, 644 SCI_CONTROLLER_INVALID_IO_TAG, (void *)io_request, 645 (void *)((char*)io_request + sizeof(struct ISCI_IO_REQUEST)), 646 &io_request->sci_object); 647 648 if (status != SCI_SUCCESS) { 649 isci_io_request_complete(io_request->parent.controller_handle, 650 device, io_request, (SCI_IO_STATUS)status); 651 return; 652 } 653 654 sci_object_set_association(io_request->sci_object, io_request); 655 656 bus_dmamap_sync(io_request->parent.dma_tag, io_request->parent.dma_map, 657 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 658 659 status = (SCI_STATUS)scif_controller_start_io( 660 io_request->parent.controller_handle, device, 661 io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG); 662 663 if (status != SCI_SUCCESS) { 664 isci_io_request_complete(io_request->parent.controller_handle, 665 device, io_request, (SCI_IO_STATUS)status); 666 return; 667 } 668 669 if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) 670 callout_reset(&io_request->parent.timer, ccb->ccb_h.timeout, 671 isci_io_request_timeout, io_request); 672 } 673 674 void 675 isci_io_request_execute_scsi_io(union ccb *ccb, 676 struct ISCI_CONTROLLER *controller) 677 { 678 struct ccb_scsiio *csio = &ccb->csio; 679 target_id_t target_id = ccb->ccb_h.target_id; 680 struct ISCI_REQUEST *request; 681 struct ISCI_IO_REQUEST *io_request; 682 struct ISCI_REMOTE_DEVICE *device = 683 controller->remote_device[target_id]; 684 int error; 685 686 if (device == NULL) { 687 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 688 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 689 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 690 xpt_done(ccb); 691 return; 692 } 693 694 if (sci_pool_empty(controller->request_pool)) { 695 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 696 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 697 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 698 xpt_freeze_simq(controller->sim, 1); 699 controller->is_frozen = TRUE; 700 xpt_done(ccb); 701 return; 702 } 703 704 ASSERT(device->is_resetting == FALSE); 705 706 sci_pool_get(controller->request_pool, request); 707 io_request = (struct ISCI_IO_REQUEST *)request; 708 709 io_request->ccb = ccb; 710 io_request->current_sge_index = 0; 711 io_request->parent.remote_device_handle = device->sci_object; 712 713 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) != 0) 714 panic("Unexpected CAM_SCATTER_VALID flag! flags = 0x%x\n", 715 ccb->ccb_h.flags); 716 717 if ((ccb->ccb_h.flags & CAM_DATA_PHYS) != 0) 718 panic("Unexpected CAM_DATA_PHYS flag! flags = 0x%x\n", 719 ccb->ccb_h.flags); 720 721 error = bus_dmamap_load(io_request->parent.dma_tag, 722 io_request->parent.dma_map, csio->data_ptr, csio->dxfer_len, 723 isci_io_request_construct, io_request, 0x0); 724 725 /* A resource shortage from BUSDMA will be automatically 726 * continued at a later point, pushing the CCB processing 727 * forward, which will in turn unfreeze the simq. 728 */ 729 if (error == EINPROGRESS) { 730 xpt_freeze_simq(controller->sim, 1); 731 ccb->ccb_h.flags |= CAM_RELEASE_SIMQ; 732 } 733 } 734 735 void 736 isci_io_request_timeout(void *arg) 737 { 738 struct ISCI_IO_REQUEST *request = (struct ISCI_IO_REQUEST *)arg; 739 struct ISCI_REMOTE_DEVICE *remote_device = (struct ISCI_REMOTE_DEVICE *) 740 sci_object_get_association(request->parent.remote_device_handle); 741 struct ISCI_CONTROLLER *controller = remote_device->domain->controller; 742 743 mtx_lock(&controller->lock); 744 isci_remote_device_reset(remote_device, NULL); 745 mtx_unlock(&controller->lock); 746 } 747 748 #if __FreeBSD_version >= 900026 749 /** 750 * @brief This callback method gets the size of and pointer to the buffer 751 * (if any) containing the request buffer for an SMP request. 752 * 753 * @param[in] core_request This parameter specifies the SCI core's request 754 * object associated with the SMP request. 755 * @param[out] smp_request_buffer This parameter returns a pointer to the 756 * payload portion of the SMP request - i.e. everything after 757 * the SMP request header. 758 * 759 * @return Size of the request buffer in bytes. This does *not* include 760 * the size of the SMP request header. 761 */ 762 static uint32_t 763 smp_io_request_cb_get_request_buffer(SCI_IO_REQUEST_HANDLE_T core_request, 764 uint8_t ** smp_request_buffer) 765 { 766 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *) 767 sci_object_get_association(sci_object_get_association(core_request)); 768 769 *smp_request_buffer = isci_request->ccb->smpio.smp_request + 770 sizeof(SMP_REQUEST_HEADER_T); 771 772 return (isci_request->ccb->smpio.smp_request_len - 773 sizeof(SMP_REQUEST_HEADER_T)); 774 } 775 776 /** 777 * @brief This callback method gets the SMP function for an SMP request. 778 * 779 * @param[in] core_request This parameter specifies the SCI core's request 780 * object associated with the SMP request. 781 * 782 * @return SMP function for the SMP request. 783 */ 784 static uint8_t 785 smp_io_request_cb_get_function(SCI_IO_REQUEST_HANDLE_T core_request) 786 { 787 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *) 788 sci_object_get_association(sci_object_get_association(core_request)); 789 SMP_REQUEST_HEADER_T *header = 790 (SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request; 791 792 return (header->function); 793 } 794 795 /** 796 * @brief This callback method gets the SMP frame type for an SMP request. 797 * 798 * @param[in] core_request This parameter specifies the SCI core's request 799 * object associated with the SMP request. 800 * 801 * @return SMP frame type for the SMP request. 802 */ 803 static uint8_t 804 smp_io_request_cb_get_frame_type(SCI_IO_REQUEST_HANDLE_T core_request) 805 { 806 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *) 807 sci_object_get_association(sci_object_get_association(core_request)); 808 SMP_REQUEST_HEADER_T *header = 809 (SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request; 810 811 return (header->smp_frame_type); 812 } 813 814 /** 815 * @brief This callback method gets the allocated response length for an SMP request. 816 * 817 * @param[in] core_request This parameter specifies the SCI core's request 818 * object associated with the SMP request. 819 * 820 * @return Allocated response length for the SMP request. 821 */ 822 static uint8_t 823 smp_io_request_cb_get_allocated_response_length( 824 SCI_IO_REQUEST_HANDLE_T core_request) 825 { 826 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *) 827 sci_object_get_association(sci_object_get_association(core_request)); 828 SMP_REQUEST_HEADER_T *header = 829 (SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request; 830 831 return (header->allocated_response_length); 832 } 833 834 static SCI_STATUS 835 isci_smp_request_construct(struct ISCI_IO_REQUEST *request) 836 { 837 SCI_STATUS status; 838 SCIC_SMP_PASSTHRU_REQUEST_CALLBACKS_T callbacks; 839 840 status = scif_request_construct(request->parent.controller_handle, 841 request->parent.remote_device_handle, SCI_CONTROLLER_INVALID_IO_TAG, 842 (void *)request, 843 (void *)((char*)request + sizeof(struct ISCI_IO_REQUEST)), 844 &request->sci_object); 845 846 if (status == SCI_SUCCESS) { 847 callbacks.scic_cb_smp_passthru_get_request = 848 &smp_io_request_cb_get_request_buffer; 849 callbacks.scic_cb_smp_passthru_get_function = 850 &smp_io_request_cb_get_function; 851 callbacks.scic_cb_smp_passthru_get_frame_type = 852 &smp_io_request_cb_get_frame_type; 853 callbacks.scic_cb_smp_passthru_get_allocated_response_length = 854 &smp_io_request_cb_get_allocated_response_length; 855 856 /* create the smp passthrough part of the io request */ 857 status = scic_io_request_construct_smp_pass_through( 858 scif_io_request_get_scic_handle(request->sci_object), 859 &callbacks); 860 } 861 862 return (status); 863 } 864 865 void 866 isci_io_request_execute_smp_io(union ccb *ccb, 867 struct ISCI_CONTROLLER *controller) 868 { 869 SCI_STATUS status; 870 target_id_t target_id = ccb->ccb_h.target_id; 871 struct ISCI_REQUEST *request; 872 struct ISCI_IO_REQUEST *io_request; 873 SCI_REMOTE_DEVICE_HANDLE_T smp_device_handle; 874 struct ISCI_REMOTE_DEVICE *end_device = controller->remote_device[target_id]; 875 876 /* SMP commands are sent to an end device, because SMP devices are not 877 * exposed to the kernel. It is our responsibility to use this method 878 * to get the SMP device that contains the specified end device. If 879 * the device is direct-attached, the handle will come back NULL, and 880 * we'll just fail the SMP_IO with DEV_NOT_THERE. 881 */ 882 scif_remote_device_get_containing_device(end_device->sci_object, 883 &smp_device_handle); 884 885 if (smp_device_handle == NULL) { 886 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 887 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 888 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 889 xpt_done(ccb); 890 return; 891 } 892 893 if (sci_pool_empty(controller->request_pool)) { 894 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 895 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 896 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 897 xpt_freeze_simq(controller->sim, 1); 898 controller->is_frozen = TRUE; 899 xpt_done(ccb); 900 return; 901 } 902 903 ASSERT(device->is_resetting == FALSE); 904 905 sci_pool_get(controller->request_pool, request); 906 io_request = (struct ISCI_IO_REQUEST *)request; 907 908 io_request->ccb = ccb; 909 io_request->parent.remote_device_handle = smp_device_handle; 910 911 status = isci_smp_request_construct(io_request); 912 913 if (status != SCI_SUCCESS) { 914 isci_io_request_complete(controller->scif_controller_handle, 915 smp_device_handle, io_request, (SCI_IO_STATUS)status); 916 return; 917 } 918 919 sci_object_set_association(io_request->sci_object, io_request); 920 921 status = (SCI_STATUS) scif_controller_start_io( 922 controller->scif_controller_handle, smp_device_handle, 923 io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG); 924 925 if (status != SCI_SUCCESS) { 926 isci_io_request_complete(controller->scif_controller_handle, 927 smp_device_handle, io_request, (SCI_IO_STATUS)status); 928 return; 929 } 930 931 if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) 932 callout_reset(&io_request->parent.timer, ccb->ccb_h.timeout, 933 isci_io_request_timeout, request); 934 } 935 #endif 936