4 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <dev/isci/isci.h>
36 #include <cam/scsi/scsi_all.h>
37 #include <cam/scsi/scsi_message.h>
39 #include <dev/isci/scil/intel_sas.h>
41 #include <dev/isci/scil/sci_util.h>
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>
48 #include <dev/isci/scil/scic_io_request.h>
49 #include <dev/isci/scil/scic_user_callback.h>
52 * @brief This user callback will inform the user that an IO request has
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
61 * @param[in] completion_status This parameter specifies the results of
62 * the IO request operation. SCI_IO_SUCCESS indicates
63 * successful completion.
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)
72 struct ISCI_IO_REQUEST *isci_request =
73 (struct ISCI_IO_REQUEST *)sci_object_get_association(io_request);
75 scif_controller_complete_io(scif_controller, remote_device, io_request);
76 isci_io_request_complete(scif_controller, remote_device, isci_request,
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)
85 struct ISCI_CONTROLLER *isci_controller;
86 struct ISCI_REMOTE_DEVICE *isci_remote_device;
91 isci_controller = (struct ISCI_CONTROLLER *) sci_object_get_association(scif_controller);
93 (struct ISCI_REMOTE_DEVICE *) sci_object_get_association(remote_device);
95 ccb = isci_request->ccb;
97 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
99 switch (completion_status) {
101 case SCI_IO_SUCCESS_COMPLETE_BEFORE_START:
102 #if __FreeBSD_version >= 900026
103 if (ccb->ccb_h.func_code == XPT_SMP_IO) {
105 scif_io_request_get_response_iu_address(
106 isci_request->sci_object);
108 memcpy(ccb->smpio.smp_response, smp_response,
109 ccb->smpio.smp_response_len);
112 ccb->ccb_h.status |= CAM_REQ_CMP;
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);
122 case SCI_IO_FAILURE_RESPONSE_VALID:
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;
129 response_buffer = (SCI_SSP_RESPONSE_IU_T *)
130 scif_io_request_get_response_iu_address(
131 isci_request->sci_object);
133 sense_length = sci_ssp_get_sense_data_length(
134 response_buffer->sense_data_length);
136 sense_length = MIN(csio->sense_len, sense_length);
138 memcpy(&csio->sense_data, response_buffer->data, sense_length);
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,
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);
154 case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED:
155 isci_remote_device_reset(isci_remote_device, NULL);
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]);
166 case SCI_IO_FAILURE_INVALID_STATE:
167 case SCI_IO_FAILURE_INSUFFICIENT_RESOURCES:
168 complete_ccb = FALSE;
171 case SCI_IO_FAILURE_INVALID_REMOTE_DEVICE:
172 ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
175 case SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE:
177 struct ccb_relsim ccb_relsim;
178 struct cam_path *path;
180 xpt_create_path(&path, NULL,
181 cam_sim_path(isci_controller->sim),
182 isci_remote_device->index, 0);
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);
192 complete_ccb = FALSE;
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:
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],
208 ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
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);
217 bus_dmamap_unload(isci_request->parent.dma_tag,
218 isci_request->parent.dma_map);
220 isci_request->ccb = NULL;
222 sci_pool_put(isci_controller->request_pool,
223 (struct ISCI_REQUEST *)isci_request);
226 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 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.
233 ccb->ccb_h.status |= CAM_DEV_QFRZN;
234 xpt_freeze_devq(ccb->ccb_h.path, 1);
237 if (ccb->ccb_h.status & CAM_SIM_QUEUED) {
239 KASSERT(ccb == isci_remote_device->queued_ccb_in_progress,
240 ("multiple internally queued ccbs in flight"));
242 TAILQ_REMOVE(&isci_remote_device->queued_ccbs,
243 &ccb->ccb_h, sim_links.tqe);
244 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
247 * This CCB that was in the queue was completed, so
248 * set the in_progress pointer to NULL denoting that
249 * we can retry another CCB from the queue. We only
250 * allow one CCB at a time from the queue to be
251 * in progress so that we can effectively maintain
254 isci_remote_device->queued_ccb_in_progress = NULL;
257 if (isci_remote_device->frozen_lun_mask != 0) {
258 isci_remote_device_release_device_queue(isci_remote_device);
263 if (isci_controller->is_frozen == TRUE) {
264 isci_controller->is_frozen = FALSE;
265 xpt_release_simq(isci_controller->sim, TRUE);
268 isci_remote_device_freeze_lun_queue(isci_remote_device,
269 ccb->ccb_h.target_lun);
271 if (ccb->ccb_h.status & CAM_SIM_QUEUED) {
273 KASSERT(ccb == isci_remote_device->queued_ccb_in_progress,
274 ("multiple internally queued ccbs in flight"));
277 * Do nothing, CCB is already on the device's queue.
278 * We leave it on the queue, to be retried again
279 * next time a CCB on this device completes, or we
280 * get a ready notification for this device.
282 isci_log_message(1, "ISCI", "already queued %p %x\n",
283 ccb, ccb->csio.cdb_io.cdb_bytes[0]);
285 isci_remote_device->queued_ccb_in_progress = NULL;
288 isci_log_message(1, "ISCI", "queue %p %x\n", ccb,
289 ccb->csio.cdb_io.cdb_bytes[0]);
290 ccb->ccb_h.status |= CAM_SIM_QUEUED;
292 TAILQ_INSERT_TAIL(&isci_remote_device->queued_ccbs,
293 &ccb->ccb_h, sim_links.tqe);
299 * @brief This callback method asks the user to provide the physical
300 * address for the supplied virtual address when building an
303 * @param[in] controller This parameter is the core controller object
305 * @param[in] io_request This parameter is the io request object handle
306 * for which the physical address is being requested.
307 * @param[in] virtual_address This paramter is the virtual address which
308 * is to be returned as a physical address.
309 * @param[out] physical_address The physical address for the supplied virtual
315 scic_cb_io_request_get_physical_address(SCI_CONTROLLER_HANDLE_T controller,
316 SCI_IO_REQUEST_HANDLE_T io_request, void *virtual_address,
317 SCI_PHYSICAL_ADDRESS *physical_address)
319 SCI_IO_REQUEST_HANDLE_T scif_request =
320 sci_object_get_association(io_request);
321 struct ISCI_REQUEST *isci_request =
322 sci_object_get_association(scif_request);
324 if(isci_request != NULL) {
325 /* isci_request is not NULL, meaning this is a request initiated
326 * by CAM or the isci layer (i.e. device reset for I/O
327 * timeout). Therefore we can calculate the physical address
328 * based on the address we stored in the struct ISCI_REQUEST
331 *physical_address = isci_request->physical_address +
332 (uintptr_t)virtual_address -
333 (uintptr_t)isci_request;
335 /* isci_request is NULL, meaning this is a request generated
336 * internally by SCIL (i.e. for SMP requests or NCQ error
337 * recovery). Therefore we calculate the physical address
338 * based on the controller's uncached controller memory buffer,
339 * since we know that this is what SCIL uses for internal
340 * framework requests.
342 SCI_CONTROLLER_HANDLE_T scif_controller =
343 (SCI_CONTROLLER_HANDLE_T) sci_object_get_association(controller);
344 struct ISCI_CONTROLLER *isci_controller =
345 (struct ISCI_CONTROLLER *)sci_object_get_association(scif_controller);
346 U64 virt_addr_offset = (uintptr_t)virtual_address -
347 (U64)isci_controller->uncached_controller_memory.virtual_address;
350 isci_controller->uncached_controller_memory.physical_address
356 * @brief This callback method asks the user to provide the address for
357 * the command descriptor block (CDB) associated with this IO request.
359 * @param[in] scif_user_io_request This parameter points to the user's
360 * IO request object. It is a cookie that allows the user to
361 * provide the necessary information for this callback.
363 * @return This method returns the virtual address of the CDB.
366 scif_cb_io_request_get_cdb_address(void * scif_user_io_request)
368 struct ISCI_IO_REQUEST *isci_request =
369 (struct ISCI_IO_REQUEST *)scif_user_io_request;
371 return (isci_request->ccb->csio.cdb_io.cdb_bytes);
375 * @brief This callback method asks the user to provide the length of
376 * the command descriptor block (CDB) associated with this IO request.
378 * @param[in] scif_user_io_request This parameter points to the user's
379 * IO request object. It is a cookie that allows the user to
380 * provide the necessary information for this callback.
382 * @return This method returns the length of the CDB.
385 scif_cb_io_request_get_cdb_length(void * scif_user_io_request)
387 struct ISCI_IO_REQUEST *isci_request =
388 (struct ISCI_IO_REQUEST *)scif_user_io_request;
390 return (isci_request->ccb->csio.cdb_len);
394 * @brief This callback method asks the user to provide the Logical Unit (LUN)
395 * associated with this IO request.
397 * @note The contents of the value returned from this callback are defined
398 * by the protocol standard (e.g. T10 SAS specification). Please
399 * refer to the transport command information unit description
400 * in the associated standard.
402 * @param[in] scif_user_io_request This parameter points to the user's
403 * IO request object. It is a cookie that allows the user to
404 * provide the necessary information for this callback.
406 * @return This method returns the LUN associated with this request.
409 scif_cb_io_request_get_lun(void * scif_user_io_request)
411 struct ISCI_IO_REQUEST *isci_request =
412 (struct ISCI_IO_REQUEST *)scif_user_io_request;
414 return (isci_request->ccb->ccb_h.target_lun);
418 * @brief This callback method asks the user to provide the task attribute
419 * associated with this IO request.
421 * @note The contents of the value returned from this callback are defined
422 * by the protocol standard (e.g. T10 SAS specification). Please
423 * refer to the transport command information unit description
424 * in the associated standard.
426 * @param[in] scif_user_io_request This parameter points to the user's
427 * IO request object. It is a cookie that allows the user to
428 * provide the necessary information for this callback.
430 * @return This method returns the task attribute associated with this
434 scif_cb_io_request_get_task_attribute(void * scif_user_io_request)
436 struct ISCI_IO_REQUEST *isci_request =
437 (struct ISCI_IO_REQUEST *)scif_user_io_request;
438 uint32_t task_attribute;
440 if((isci_request->ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0)
441 switch(isci_request->ccb->csio.tag_action) {
442 case MSG_HEAD_OF_Q_TAG:
443 task_attribute = SCI_SAS_HEAD_OF_QUEUE_ATTRIBUTE;
446 case MSG_ORDERED_Q_TAG:
447 task_attribute = SCI_SAS_ORDERED_ATTRIBUTE;
451 task_attribute = SCI_SAS_ACA_ATTRIBUTE;
455 task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE;
459 task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE;
461 return (task_attribute);
465 * @brief This callback method asks the user to provide the command priority
466 * associated with this IO request.
468 * @note The contents of the value returned from this callback are defined
469 * by the protocol standard (e.g. T10 SAS specification). Please
470 * refer to the transport command information unit description
471 * in the associated standard.
473 * @param[in] scif_user_io_request This parameter points to the user's
474 * IO request object. It is a cookie that allows the user to
475 * provide the necessary information for this callback.
477 * @return This method returns the command priority associated with this
481 scif_cb_io_request_get_command_priority(void * scif_user_io_request)
487 * @brief This method simply returns the virtual address associated
488 * with the scsi_io and byte_offset supplied parameters.
490 * @note This callback is not utilized in the fast path. The expectation
491 * is that this method is utilized for items such as SCSI to ATA
492 * translation for commands like INQUIRY, READ CAPACITY, etc.
494 * @param[in] scif_user_io_request This parameter points to the user's
495 * IO request object. It is a cookie that allows the user to
496 * provide the necessary information for this callback.
497 * @param[in] byte_offset This parameter specifies the offset into the data
498 * buffers pointed to by the SGL. The byte offset starts at 0
499 * and continues until the last byte pointed to be the last SGL
502 * @return A virtual address pointer to the location specified by the
506 scif_cb_io_request_get_virtual_address_from_sgl(void * scif_user_io_request,
507 uint32_t byte_offset)
509 struct ISCI_IO_REQUEST *isci_request =
510 (struct ISCI_IO_REQUEST *)scif_user_io_request;
512 return (isci_request->ccb->csio.data_ptr + byte_offset);
516 * @brief This callback method asks the user to provide the number of
517 * bytes to be transfered as part of this request.
519 * @param[in] scif_user_io_request This parameter points to the user's
520 * IO request object. It is a cookie that allows the user to
521 * provide the necessary information for this callback.
523 * @return This method returns the number of payload data bytes to be
524 * transfered for this IO request.
527 scif_cb_io_request_get_transfer_length(void * scif_user_io_request)
529 struct ISCI_IO_REQUEST *isci_request =
530 (struct ISCI_IO_REQUEST *)scif_user_io_request;
532 return (isci_request->ccb->csio.dxfer_len);
537 * @brief This callback method asks the user to provide the data direction
540 * @param[in] scif_user_io_request This parameter points to the user's
541 * IO request object. It is a cookie that allows the user to
542 * provide the necessary information for this callback.
544 * @return This method returns the value of SCI_IO_REQUEST_DATA_OUT,
545 * SCI_IO_REQUEST_DATA_IN, or SCI_IO_REQUEST_NO_DATA.
547 SCI_IO_REQUEST_DATA_DIRECTION
548 scif_cb_io_request_get_data_direction(void * scif_user_io_request)
550 struct ISCI_IO_REQUEST *isci_request =
551 (struct ISCI_IO_REQUEST *)scif_user_io_request;
553 switch (isci_request->ccb->ccb_h.flags & CAM_DIR_MASK) {
555 return (SCI_IO_REQUEST_DATA_IN);
557 return (SCI_IO_REQUEST_DATA_OUT);
559 return (SCI_IO_REQUEST_NO_DATA);
564 * @brief This callback method asks the user to provide the address
565 * to where the next Scatter-Gather Element is located.
567 * Details regarding usage:
568 * - Regarding the first SGE: the user should initialize an index,
569 * or a pointer, prior to construction of the request that will
570 * reference the very first scatter-gather element. This is
571 * important since this method is called for every scatter-gather
572 * element, including the first element.
573 * - Regarding the last SGE: the user should return NULL from this
574 * method when this method is called and the SGL has exhausted
577 * @param[in] scif_user_io_request This parameter points to the user's
578 * IO request object. It is a cookie that allows the user to
579 * provide the necessary information for this callback.
580 * @param[in] current_sge_address This parameter specifies the address for
581 * the current SGE (i.e. the one that has just processed).
582 * @param[out] next_sge An address specifying the location for the next scatter
583 * gather element to be processed.
588 scif_cb_io_request_get_next_sge(void * scif_user_io_request,
589 void * current_sge_address, void ** next_sge)
591 struct ISCI_IO_REQUEST *isci_request =
592 (struct ISCI_IO_REQUEST *)scif_user_io_request;
594 if (isci_request->current_sge_index == isci_request->num_segments)
597 bus_dma_segment_t *sge =
598 &isci_request->sge[isci_request->current_sge_index];
600 isci_request->current_sge_index++;
606 * @brief This callback method asks the user to provide the contents of the
607 * "address" field in the Scatter-Gather Element.
609 * @param[in] scif_user_io_request This parameter points to the user's
610 * IO request object. It is a cookie that allows the user to
611 * provide the necessary information for this callback.
612 * @param[in] sge_address This parameter specifies the address for the
613 * SGE from which to retrieve the address field.
615 * @return A physical address specifying the contents of the SGE's address
619 scif_cb_sge_get_address_field(void *scif_user_io_request, void *sge_address)
621 bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address;
623 return ((SCI_PHYSICAL_ADDRESS)sge->ds_addr);
627 * @brief This callback method asks the user to provide the contents of the
628 * "length" field in the Scatter-Gather Element.
630 * @param[in] scif_user_io_request This parameter points to the user's
631 * IO request object. It is a cookie that allows the user to
632 * provide the necessary information for this callback.
633 * @param[in] sge_address This parameter specifies the address for the
634 * SGE from which to retrieve the address field.
636 * @return This method returns the length field specified inside the SGE
637 * referenced by the sge_address parameter.
640 scif_cb_sge_get_length_field(void *scif_user_io_request, void *sge_address)
642 bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address;
644 return ((uint32_t)sge->ds_len);
648 isci_request_construct(struct ISCI_REQUEST *request,
649 SCI_CONTROLLER_HANDLE_T scif_controller_handle,
650 bus_dma_tag_t io_buffer_dma_tag, bus_addr_t physical_address)
653 request->controller_handle = scif_controller_handle;
654 request->dma_tag = io_buffer_dma_tag;
655 request->physical_address = physical_address;
656 bus_dmamap_create(request->dma_tag, 0, &request->dma_map);
657 callout_init(&request->timer, CALLOUT_MPSAFE);
661 isci_io_request_construct(void *arg, bus_dma_segment_t *seg, int nseg,
665 struct ISCI_IO_REQUEST *io_request = (struct ISCI_IO_REQUEST *)arg;
666 SCI_REMOTE_DEVICE_HANDLE_T *device = io_request->parent.remote_device_handle;
669 io_request->num_segments = nseg;
670 io_request->sge = seg;
671 ccb = io_request->ccb;
673 /* XXX More cleanup is needed here */
674 if ((nseg == 0) || (error != 0)) {
675 ccb->ccb_h.status = CAM_REQ_INVALID;
680 status = scif_io_request_construct(
681 io_request->parent.controller_handle,
682 io_request->parent.remote_device_handle,
683 SCI_CONTROLLER_INVALID_IO_TAG, (void *)io_request,
684 (void *)((char*)io_request + sizeof(struct ISCI_IO_REQUEST)),
685 &io_request->sci_object);
687 if (status != SCI_SUCCESS) {
688 isci_io_request_complete(io_request->parent.controller_handle,
689 device, io_request, (SCI_IO_STATUS)status);
693 sci_object_set_association(io_request->sci_object, io_request);
695 bus_dmamap_sync(io_request->parent.dma_tag, io_request->parent.dma_map,
696 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
698 status = (SCI_STATUS)scif_controller_start_io(
699 io_request->parent.controller_handle, device,
700 io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG);
702 if (status != SCI_SUCCESS) {
703 isci_io_request_complete(io_request->parent.controller_handle,
704 device, io_request, (SCI_IO_STATUS)status);
708 if (ccb->ccb_h.timeout != CAM_TIME_INFINITY)
709 callout_reset(&io_request->parent.timer, ccb->ccb_h.timeout,
710 isci_io_request_timeout, io_request);
714 isci_io_request_execute_scsi_io(union ccb *ccb,
715 struct ISCI_CONTROLLER *controller)
717 struct ccb_scsiio *csio = &ccb->csio;
718 target_id_t target_id = ccb->ccb_h.target_id;
719 struct ISCI_REQUEST *request;
720 struct ISCI_IO_REQUEST *io_request;
721 struct ISCI_REMOTE_DEVICE *device =
722 controller->remote_device[target_id];
725 if (device == NULL) {
726 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
727 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
728 ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
733 if (sci_pool_empty(controller->request_pool)) {
734 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
735 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
736 ccb->ccb_h.status |= CAM_REQUEUE_REQ;
737 xpt_freeze_simq(controller->sim, 1);
738 controller->is_frozen = TRUE;
743 ASSERT(device->is_resetting == FALSE);
745 sci_pool_get(controller->request_pool, request);
746 io_request = (struct ISCI_IO_REQUEST *)request;
748 io_request->ccb = ccb;
749 io_request->current_sge_index = 0;
750 io_request->parent.remote_device_handle = device->sci_object;
752 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) != 0)
753 panic("Unexpected CAM_SCATTER_VALID flag! flags = 0x%x\n",
756 if ((ccb->ccb_h.flags & CAM_DATA_PHYS) != 0)
757 panic("Unexpected CAM_DATA_PHYS flag! flags = 0x%x\n",
760 error = bus_dmamap_load(io_request->parent.dma_tag,
761 io_request->parent.dma_map, csio->data_ptr, csio->dxfer_len,
762 isci_io_request_construct, io_request, 0x0);
764 /* A resource shortage from BUSDMA will be automatically
765 * continued at a later point, pushing the CCB processing
766 * forward, which will in turn unfreeze the simq.
768 if (error == EINPROGRESS) {
769 xpt_freeze_simq(controller->sim, 1);
770 ccb->ccb_h.flags |= CAM_RELEASE_SIMQ;
775 isci_io_request_timeout(void *arg)
777 struct ISCI_IO_REQUEST *request = (struct ISCI_IO_REQUEST *)arg;
778 struct ISCI_REMOTE_DEVICE *remote_device = (struct ISCI_REMOTE_DEVICE *)
779 sci_object_get_association(request->parent.remote_device_handle);
780 struct ISCI_CONTROLLER *controller = remote_device->domain->controller;
782 mtx_lock(&controller->lock);
783 isci_remote_device_reset(remote_device, NULL);
784 mtx_unlock(&controller->lock);
787 #if __FreeBSD_version >= 900026
789 * @brief This callback method gets the size of and pointer to the buffer
790 * (if any) containing the request buffer for an SMP request.
792 * @param[in] core_request This parameter specifies the SCI core's request
793 * object associated with the SMP request.
794 * @param[out] smp_request_buffer This parameter returns a pointer to the
795 * payload portion of the SMP request - i.e. everything after
796 * the SMP request header.
798 * @return Size of the request buffer in bytes. This does *not* include
799 * the size of the SMP request header.
802 smp_io_request_cb_get_request_buffer(SCI_IO_REQUEST_HANDLE_T core_request,
803 uint8_t ** smp_request_buffer)
805 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
806 sci_object_get_association(sci_object_get_association(core_request));
808 *smp_request_buffer = isci_request->ccb->smpio.smp_request +
809 sizeof(SMP_REQUEST_HEADER_T);
811 return (isci_request->ccb->smpio.smp_request_len -
812 sizeof(SMP_REQUEST_HEADER_T));
816 * @brief This callback method gets the SMP function for an SMP request.
818 * @param[in] core_request This parameter specifies the SCI core's request
819 * object associated with the SMP request.
821 * @return SMP function for the SMP request.
824 smp_io_request_cb_get_function(SCI_IO_REQUEST_HANDLE_T core_request)
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;
831 return (header->function);
835 * @brief This callback method gets the SMP frame type for an SMP request.
837 * @param[in] core_request This parameter specifies the SCI core's request
838 * object associated with the SMP request.
840 * @return SMP frame type for the SMP request.
843 smp_io_request_cb_get_frame_type(SCI_IO_REQUEST_HANDLE_T core_request)
845 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
846 sci_object_get_association(sci_object_get_association(core_request));
847 SMP_REQUEST_HEADER_T *header =
848 (SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request;
850 return (header->smp_frame_type);
854 * @brief This callback method gets the allocated response length for an SMP request.
856 * @param[in] core_request This parameter specifies the SCI core's request
857 * object associated with the SMP request.
859 * @return Allocated response length for the SMP request.
862 smp_io_request_cb_get_allocated_response_length(
863 SCI_IO_REQUEST_HANDLE_T core_request)
865 struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
866 sci_object_get_association(sci_object_get_association(core_request));
867 SMP_REQUEST_HEADER_T *header =
868 (SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request;
870 return (header->allocated_response_length);
874 isci_smp_request_construct(struct ISCI_IO_REQUEST *request)
877 SCIC_SMP_PASSTHRU_REQUEST_CALLBACKS_T callbacks;
879 status = scif_request_construct(request->parent.controller_handle,
880 request->parent.remote_device_handle, SCI_CONTROLLER_INVALID_IO_TAG,
882 (void *)((char*)request + sizeof(struct ISCI_IO_REQUEST)),
883 &request->sci_object);
885 if (status == SCI_SUCCESS) {
886 callbacks.scic_cb_smp_passthru_get_request =
887 &smp_io_request_cb_get_request_buffer;
888 callbacks.scic_cb_smp_passthru_get_function =
889 &smp_io_request_cb_get_function;
890 callbacks.scic_cb_smp_passthru_get_frame_type =
891 &smp_io_request_cb_get_frame_type;
892 callbacks.scic_cb_smp_passthru_get_allocated_response_length =
893 &smp_io_request_cb_get_allocated_response_length;
895 /* create the smp passthrough part of the io request */
896 status = scic_io_request_construct_smp_pass_through(
897 scif_io_request_get_scic_handle(request->sci_object),
905 isci_io_request_execute_smp_io(union ccb *ccb,
906 struct ISCI_CONTROLLER *controller)
909 target_id_t target_id = ccb->ccb_h.target_id;
910 struct ISCI_REQUEST *request;
911 struct ISCI_IO_REQUEST *io_request;
912 SCI_REMOTE_DEVICE_HANDLE_T smp_device_handle;
913 struct ISCI_REMOTE_DEVICE *end_device = controller->remote_device[target_id];
915 /* SMP commands are sent to an end device, because SMP devices are not
916 * exposed to the kernel. It is our responsibility to use this method
917 * to get the SMP device that contains the specified end device. If
918 * the device is direct-attached, the handle will come back NULL, and
919 * we'll just fail the SMP_IO with DEV_NOT_THERE.
921 scif_remote_device_get_containing_device(end_device->sci_object,
924 if (smp_device_handle == NULL) {
925 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
926 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
927 ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
932 if (sci_pool_empty(controller->request_pool)) {
933 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
934 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
935 ccb->ccb_h.status |= CAM_REQUEUE_REQ;
936 xpt_freeze_simq(controller->sim, 1);
937 controller->is_frozen = TRUE;
942 ASSERT(device->is_resetting == FALSE);
944 sci_pool_get(controller->request_pool, request);
945 io_request = (struct ISCI_IO_REQUEST *)request;
947 io_request->ccb = ccb;
948 io_request->parent.remote_device_handle = smp_device_handle;
950 status = isci_smp_request_construct(io_request);
952 if (status != SCI_SUCCESS) {
953 isci_io_request_complete(controller->scif_controller_handle,
954 smp_device_handle, io_request, (SCI_IO_STATUS)status);
958 sci_object_set_association(io_request->sci_object, io_request);
960 status = (SCI_STATUS) scif_controller_start_io(
961 controller->scif_controller_handle, smp_device_handle,
962 io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG);
964 if (status != SCI_SUCCESS) {
965 isci_io_request_complete(controller->scif_controller_handle,
966 smp_device_handle, io_request, (SCI_IO_STATUS)status);
970 if (ccb->ccb_h.timeout != CAM_TIME_INFINITY)
971 callout_reset(&io_request->parent.timer, ccb->ccb_h.timeout,
972 isci_io_request_timeout, request);