diff options
Diffstat (limited to 'drivers/scsi/isci/task.c')
| -rw-r--r-- | drivers/scsi/isci/task.c | 1302 |
1 files changed, 219 insertions, 1083 deletions
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index d6bcdd013dc..5d6fda72d65 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -78,56 +78,25 @@ static void isci_task_refuse(struct isci_host *ihost, struct sas_task *task, enum exec_status status) { - enum isci_completion_selection disposition; - - disposition = isci_perform_normal_io_completion; - disposition = isci_task_set_completion_status(task, response, status, - disposition); - - /* Tasks aborted specifically by a call to the lldd_abort_task - * function should not be completed to the host in the regular path. - */ - switch (disposition) { - case isci_perform_normal_io_completion: - /* Normal notification (task_done) */ - dev_dbg(&ihost->pdev->dev, - "%s: Normal - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); - - task->lldd_task = NULL; + unsigned long flags; - isci_execpath_callback(ihost, task, task->task_done); - break; + /* Normal notification (task_done) */ + dev_dbg(&ihost->pdev->dev, "%s: task = %p, response=%d, status=%d\n", + __func__, task, response, status); - case isci_perform_aborted_io_completion: - /* - * No notification because this request is already in the - * abort path. - */ - dev_dbg(&ihost->pdev->dev, - "%s: Aborted - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); - break; + spin_lock_irqsave(&task->task_state_lock, flags); - case isci_perform_error_io_completion: - /* Use sas_task_abort */ - dev_dbg(&ihost->pdev->dev, - "%s: Error - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); + task->task_status.resp = response; + task->task_status.stat = status; - isci_execpath_callback(ihost, task, sas_task_abort); - break; + /* Normal notification (task_done) */ + task->task_state_flags |= SAS_TASK_STATE_DONE; + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + task->lldd_task = NULL; + spin_unlock_irqrestore(&task->task_state_lock, flags); - default: - dev_dbg(&ihost->pdev->dev, - "%s: isci task notification default case!", - __func__); - sas_task_abort(task); - break; - } + task->task_done(task); } #define for_each_sas_task(num, task) \ @@ -212,16 +181,27 @@ int isci_task_execute_task(struct sas_task *task, int num, gfp_t gfp_flags) task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; spin_unlock_irqrestore(&task->task_state_lock, flags); - /* Indicate QUEUE_FULL so that the scsi - * midlayer retries. if the request - * failed for remote device reasons, - * it gets returned as - * SAS_TASK_UNDELIVERED next time - * through. - */ - isci_task_refuse(ihost, task, - SAS_TASK_COMPLETE, - SAS_QUEUE_FULL); + if (test_bit(IDEV_GONE, &idev->flags)) { + + /* Indicate that the device + * is gone. + */ + isci_task_refuse(ihost, task, + SAS_TASK_UNDELIVERED, + SAS_DEVICE_UNKNOWN); + } else { + /* Indicate QUEUE_FULL so that + * the scsi midlayer retries. + * If the request failed for + * remote device reasons, it + * gets returned as + * SAS_TASK_UNDELIVERED next + * time through. + */ + isci_task_refuse(ihost, task, + SAS_TASK_COMPLETE, + SAS_QUEUE_FULL); + } } } } @@ -238,46 +218,6 @@ int isci_task_execute_task(struct sas_task *task, int num, gfp_t gfp_flags) return 0; } -static enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq) -{ - struct isci_tmf *isci_tmf; - enum sci_status status; - - if (tmf_task != ireq->ttype) - return SCI_FAILURE; - - isci_tmf = isci_request_access_tmf(ireq); - - switch (isci_tmf->tmf_code) { - - case isci_tmf_sata_srst_high: - case isci_tmf_sata_srst_low: { - struct host_to_dev_fis *fis = &ireq->stp.cmd; - - memset(fis, 0, sizeof(*fis)); - - fis->fis_type = 0x27; - fis->flags &= ~0x80; - fis->flags &= 0xF0; - if (isci_tmf->tmf_code == isci_tmf_sata_srst_high) - fis->control |= ATA_SRST; - else - fis->control &= ~ATA_SRST; - break; - } - /* other management commnd go here... */ - default: - return SCI_FAILURE; - } - - /* core builds the protocol specific request - * based on the h2d fis. - */ - status = sci_task_request_construct_sata(ireq); - - return status; -} - static struct isci_request *isci_task_request_build(struct isci_host *ihost, struct isci_remote_device *idev, u16 tag, struct isci_tmf *isci_tmf) @@ -310,20 +250,13 @@ static struct isci_request *isci_task_request_build(struct isci_host *ihost, } /* XXX convert to get this from task->tproto like other drivers */ - if (dev->dev_type == SAS_END_DEV) { + if (dev->dev_type == SAS_END_DEVICE) { isci_tmf->proto = SAS_PROTOCOL_SSP; status = sci_task_request_construct_ssp(ireq); if (status != SCI_SUCCESS) return NULL; } - if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { - isci_tmf->proto = SAS_PROTOCOL_SATA; - status = isci_sata_management_task_request_build(ireq); - - if (status != SCI_SUCCESS) - return NULL; - } return ireq; } @@ -364,6 +297,7 @@ static int isci_task_execute_tmf(struct isci_host *ihost, /* Assign the pointer to the TMF's completion kernel wait structure. */ tmf->complete = &completion; + tmf->status = SCI_FAILURE_TIMEOUT; ireq = isci_task_request_build(ihost, idev, tag, tmf); if (!ireq) @@ -383,37 +317,23 @@ static int isci_task_execute_tmf(struct isci_host *ihost, spin_unlock_irqrestore(&ihost->scic_lock, flags); goto err_tci; } - - if (tmf->cb_state_func != NULL) - tmf->cb_state_func(isci_tmf_started, tmf, tmf->cb_data); - - isci_request_change_state(ireq, started); - - /* add the request to the remote device request list. */ - list_add(&ireq->dev_node, &idev->reqs_in_process); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* The RNC must be unsuspended before the TMF can get a response. */ + isci_remote_device_resume_from_abort(ihost, idev); + /* Wait for the TMF to complete, or a timeout. */ timeleft = wait_for_completion_timeout(&completion, msecs_to_jiffies(timeout_ms)); if (timeleft == 0) { - spin_lock_irqsave(&ihost->scic_lock, flags); - - if (tmf->cb_state_func != NULL) - tmf->cb_state_func(isci_tmf_timed_out, tmf, tmf->cb_data); - - sci_controller_terminate_request(ihost, - idev, - ireq); - - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - wait_for_completion(tmf->complete); + /* The TMF did not complete - this could be because + * of an unplug. Terminate the TMF request now. + */ + isci_remote_device_suspend_terminate(ihost, idev, ireq); } - isci_print_tmf(tmf); + isci_print_tmf(ihost, tmf); if (tmf->status == SCI_SUCCESS) ret = TMF_RESP_FUNC_COMPLETE; @@ -442,366 +362,21 @@ static int isci_task_execute_tmf(struct isci_host *ihost, } static void isci_task_build_tmf(struct isci_tmf *tmf, - enum isci_tmf_function_codes code, - void (*tmf_sent_cb)(enum isci_tmf_cb_state, - struct isci_tmf *, - void *), - void *cb_data) + enum isci_tmf_function_codes code) { memset(tmf, 0, sizeof(*tmf)); - - tmf->tmf_code = code; - tmf->cb_state_func = tmf_sent_cb; - tmf->cb_data = cb_data; + tmf->tmf_code = code; } static void isci_task_build_abort_task_tmf(struct isci_tmf *tmf, enum isci_tmf_function_codes code, - void (*tmf_sent_cb)(enum isci_tmf_cb_state, - struct isci_tmf *, - void *), struct isci_request *old_request) { - isci_task_build_tmf(tmf, code, tmf_sent_cb, old_request); + isci_task_build_tmf(tmf, code); tmf->io_tag = old_request->io_tag; } /** - * isci_task_validate_request_to_abort() - This function checks the given I/O - * against the "started" state. If the request is still "started", it's - * state is changed to aborted. NOTE: isci_host->scic_lock MUST BE HELD - * BEFORE CALLING THIS FUNCTION. - * @isci_request: This parameter specifies the request object to control. - * @isci_host: This parameter specifies the ISCI host object - * @isci_device: This is the device to which the request is pending. - * @aborted_io_completion: This is a completion structure that will be added to - * the request in case it is changed to aborting; this completion is - * triggered when the request is fully completed. - * - * Either "started" on successful change of the task status to "aborted", or - * "unallocated" if the task cannot be controlled. - */ -static enum isci_request_status isci_task_validate_request_to_abort( - struct isci_request *isci_request, - struct isci_host *isci_host, - struct isci_remote_device *isci_device, - struct completion *aborted_io_completion) -{ - enum isci_request_status old_state = unallocated; - - /* Only abort the task if it's in the - * device's request_in_process list - */ - if (isci_request && !list_empty(&isci_request->dev_node)) { - old_state = isci_request_change_started_to_aborted( - isci_request, aborted_io_completion); - - } - - return old_state; -} - -/** -* isci_request_cleanup_completed_loiterer() - This function will take care of -* the final cleanup on any request which has been explicitly terminated. -* @isci_host: This parameter specifies the ISCI host object -* @isci_device: This is the device to which the request is pending. -* @isci_request: This parameter specifies the terminated request object. -* @task: This parameter is the libsas I/O request. -*/ -static void isci_request_cleanup_completed_loiterer( - struct isci_host *isci_host, - struct isci_remote_device *isci_device, - struct isci_request *isci_request, - struct sas_task *task) -{ - unsigned long flags; - - dev_dbg(&isci_host->pdev->dev, - "%s: isci_device=%p, request=%p, task=%p\n", - __func__, isci_device, isci_request, task); - - if (task != NULL) { - - spin_lock_irqsave(&task->task_state_lock, flags); - task->lldd_task = NULL; - - task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET; - - isci_set_task_doneflags(task); - - /* If this task is not in the abort path, call task_done. */ - if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) { - - spin_unlock_irqrestore(&task->task_state_lock, flags); - task->task_done(task); - } else - spin_unlock_irqrestore(&task->task_state_lock, flags); - } - - if (isci_request != NULL) { - spin_lock_irqsave(&isci_host->scic_lock, flags); - list_del_init(&isci_request->dev_node); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - } -} - -/** - * isci_terminate_request_core() - This function will terminate the given - * request, and wait for it to complete. This function must only be called - * from a thread that can wait. Note that the request is terminated and - * completed (back to the host, if started there). - * @ihost: This SCU. - * @idev: The target. - * @isci_request: The I/O request to be terminated. - * - */ -static void isci_terminate_request_core(struct isci_host *ihost, - struct isci_remote_device *idev, - struct isci_request *isci_request) -{ - enum sci_status status = SCI_SUCCESS; - bool was_terminated = false; - bool needs_cleanup_handling = false; - enum isci_request_status request_status; - unsigned long flags; - unsigned long termination_completed = 1; - struct completion *io_request_completion; - struct sas_task *task; - - dev_dbg(&ihost->pdev->dev, - "%s: device = %p; request = %p\n", - __func__, idev, isci_request); - - spin_lock_irqsave(&ihost->scic_lock, flags); - - io_request_completion = isci_request->io_request_completion; - - task = (isci_request->ttype == io_task) - ? isci_request_access_task(isci_request) - : NULL; - - /* Note that we are not going to control - * the target to abort the request. - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &isci_request->flags); - - /* Make sure the request wasn't just sitting around signalling - * device condition (if the request handle is NULL, then the - * request completed but needed additional handling here). - */ - if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { - was_terminated = true; - needs_cleanup_handling = true; - status = sci_controller_terminate_request(ihost, - idev, - isci_request); - } - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - /* - * The only time the request to terminate will - * fail is when the io request is completed and - * being aborted. - */ - if (status != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: sci_controller_terminate_request" - " returned = 0x%x\n", - __func__, status); - - isci_request->io_request_completion = NULL; - - } else { - if (was_terminated) { - dev_dbg(&ihost->pdev->dev, - "%s: before completion wait (%p/%p)\n", - __func__, isci_request, io_request_completion); - - /* Wait here for the request to complete. */ - #define TERMINATION_TIMEOUT_MSEC 500 - termination_completed - = wait_for_completion_timeout( - io_request_completion, - msecs_to_jiffies(TERMINATION_TIMEOUT_MSEC)); - - if (!termination_completed) { - - /* The request to terminate has timed out. */ - spin_lock_irqsave(&ihost->scic_lock, - flags); - - /* Check for state changes. */ - if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { - - /* The best we can do is to have the - * request die a silent death if it - * ever really completes. - * - * Set the request state to "dead", - * and clear the task pointer so that - * an actual completion event callback - * doesn't do anything. - */ - isci_request->status = dead; - isci_request->io_request_completion - = NULL; - - if (isci_request->ttype == io_task) { - - /* Break links with the - * sas_task. - */ - isci_request->ttype_ptr.io_task_ptr - = NULL; - } - } else - termination_completed = 1; - - spin_unlock_irqrestore(&ihost->scic_lock, - flags); - - if (!termination_completed) { - - dev_dbg(&ihost->pdev->dev, - "%s: *** Timeout waiting for " - "termination(%p/%p)\n", - __func__, io_request_completion, - isci_request); - - /* The request can no longer be referenced - * safely since it may go away if the - * termination every really does complete. - */ - isci_request = NULL; - } - } - if (termination_completed) - dev_dbg(&ihost->pdev->dev, - "%s: after completion wait (%p/%p)\n", - __func__, isci_request, io_request_completion); - } - - if (termination_completed) { - - isci_request->io_request_completion = NULL; - - /* Peek at the status of the request. This will tell - * us if there was special handling on the request such that it - * needs to be detached and freed here. - */ - spin_lock_irqsave(&isci_request->state_lock, flags); - request_status = isci_request->status; - - if ((isci_request->ttype == io_task) /* TMFs are in their own thread */ - && ((request_status == aborted) - || (request_status == aborting) - || (request_status == terminating) - || (request_status == completed) - || (request_status == dead) - ) - ) { - - /* The completion routine won't free a request in - * the aborted/aborting/etc. states, so we do - * it here. - */ - needs_cleanup_handling = true; - } - spin_unlock_irqrestore(&isci_request->state_lock, flags); - - } - if (needs_cleanup_handling) - isci_request_cleanup_completed_loiterer( - ihost, idev, isci_request, task); - } -} - -/** - * isci_terminate_pending_requests() - This function will change the all of the - * requests on the given device's state to "aborting", will terminate the - * requests, and wait for them to complete. This function must only be - * called from a thread that can wait. Note that the requests are all - * terminated and completed (back to the host, if started there). - * @isci_host: This parameter specifies SCU. - * @idev: This parameter specifies the target. - * - */ -void isci_terminate_pending_requests(struct isci_host *ihost, - struct isci_remote_device *idev) -{ - struct completion request_completion; - enum isci_request_status old_state; - unsigned long flags; - LIST_HEAD(list); - - spin_lock_irqsave(&ihost->scic_lock, flags); - list_splice_init(&idev->reqs_in_process, &list); - - /* assumes that isci_terminate_request_core deletes from the list */ - while (!list_empty(&list)) { - struct isci_request *ireq = list_entry(list.next, typeof(*ireq), dev_node); - - /* Change state to "terminating" if it is currently - * "started". - */ - old_state = isci_request_change_started_to_newstate(ireq, - &request_completion, - terminating); - switch (old_state) { - case started: - case completed: - case aborting: - break; - default: - /* termination in progress, or otherwise dispositioned. - * We know the request was on 'list' so should be safe - * to move it back to reqs_in_process - */ - list_move(&ireq->dev_node, &idev->reqs_in_process); - ireq = NULL; - break; - } - - if (!ireq) - continue; - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - init_completion(&request_completion); - - dev_dbg(&ihost->pdev->dev, - "%s: idev=%p request=%p; task=%p old_state=%d\n", - __func__, idev, ireq, - ireq->ttype == io_task ? isci_request_access_task(ireq) : NULL, - old_state); - - /* If the old_state is started: - * This request was not already being aborted. If it had been, - * then the aborting I/O (ie. the TMF request) would not be in - * the aborting state, and thus would be terminated here. Note - * that since the TMF completion's call to the kernel function - * "complete()" does not happen until the pending I/O request - * terminate fully completes, we do not have to implement a - * special wait here for already aborting requests - the - * termination of the TMF request will force the request - * to finish it's already started terminate. - * - * If old_state == completed: - * This request completed from the SCU hardware perspective - * and now just needs cleaning up in terms of freeing the - * request and potentially calling up to libsas. - * - * If old_state == aborting: - * This request has already gone through a TMF timeout, but may - * not have been terminated; needs cleaning up at least. - */ - isci_terminate_request_core(ihost, idev, ireq); - spin_lock_irqsave(&ihost->scic_lock, flags); - } - spin_unlock_irqrestore(&ihost->scic_lock, flags); -} - -/** * isci_task_send_lu_reset_sas() - This function is called by of the SAS Domain * Template functions. * @lun: This parameter specifies the lun to be reset. @@ -824,7 +399,7 @@ static int isci_task_send_lu_reset_sas( * value is "TMF_RESP_FUNC_COMPLETE", or the request timed-out (or * was otherwise unable to be executed ("TMF_RESP_FUNC_FAILED"). */ - isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset, NULL, NULL); + isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset); #define ISCI_LU_RESET_TIMEOUT_MS 2000 /* 2 second timeout. */ ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_LU_RESET_TIMEOUT_MS); @@ -841,85 +416,46 @@ static int isci_task_send_lu_reset_sas( return ret; } -static int isci_task_send_lu_reset_sata(struct isci_host *ihost, - struct isci_remote_device *idev, u8 *lun) -{ - int ret = TMF_RESP_FUNC_FAILED; - struct isci_tmf tmf; - - /* Send the soft reset to the target */ - #define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */ - isci_task_build_tmf(&tmf, isci_tmf_sata_srst_high, NULL, NULL); - - ret = isci_task_execute_tmf(ihost, idev, &tmf, ISCI_SRST_TIMEOUT_MS); - - if (ret != TMF_RESP_FUNC_COMPLETE) { - dev_dbg(&ihost->pdev->dev, - "%s: Assert SRST failed (%p) = %x", - __func__, idev, ret); - - /* Return the failure so that the LUN reset is escalated - * to a target reset. - */ - } - return ret; -} - -/** - * isci_task_lu_reset() - This function is one of the SAS Domain Template - * functions. This is one of the Task Management functoins called by libsas, - * to reset the given lun. Note the assumption that while this call is - * executing, no I/O will be sent by the host to the device. - * @lun: This parameter specifies the lun to be reset. - * - * status, zero indicates success. - */ -int isci_task_lu_reset(struct domain_device *domain_device, u8 *lun) +int isci_task_lu_reset(struct domain_device *dev, u8 *lun) { - struct isci_host *isci_host = dev_to_ihost(domain_device); - struct isci_remote_device *isci_device; + struct isci_host *ihost = dev_to_ihost(dev); + struct isci_remote_device *idev; unsigned long flags; - int ret; + int ret = TMF_RESP_FUNC_COMPLETE; - spin_lock_irqsave(&isci_host->scic_lock, flags); - isci_device = isci_lookup_device(domain_device); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + spin_lock_irqsave(&ihost->scic_lock, flags); + idev = isci_get_device(dev->lldd_dev); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, + dev_dbg(&ihost->pdev->dev, "%s: domain_device=%p, isci_host=%p; isci_device=%p\n", - __func__, domain_device, isci_host, isci_device); + __func__, dev, ihost, idev); - if (isci_device) - set_bit(IDEV_EH, &isci_device->flags); + if (!idev) { + /* If the device is gone, escalate to I_T_Nexus_Reset. */ + dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__); - /* If there is a device reset pending on any request in the - * device's list, fail this LUN reset request in order to - * escalate to the device reset. - */ - if (!isci_device || - isci_device_is_reset_pending(isci_host, isci_device)) { - dev_dbg(&isci_host->pdev->dev, - "%s: No dev (%p), or " - "RESET PENDING: domain_device=%p\n", - __func__, isci_device, domain_device); ret = TMF_RESP_FUNC_FAILED; goto out; } - /* Send the task management part of the reset. */ - if (sas_protocol_ata(domain_device->tproto)) { - ret = isci_task_send_lu_reset_sata(isci_host, isci_device, lun); - } else - ret = isci_task_send_lu_reset_sas(isci_host, isci_device, lun); - - /* If the LUN reset worked, all the I/O can now be terminated. */ - if (ret == TMF_RESP_FUNC_COMPLETE) - /* Terminate all I/O now. */ - isci_terminate_pending_requests(isci_host, - isci_device); - + /* Suspend the RNC, kill all TCs */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { + /* The suspend/terminate only fails if isci_get_device fails */ + ret = TMF_RESP_FUNC_FAILED; + goto out; + } + /* All pending I/Os have been terminated and cleaned up. */ + if (!test_bit(IDEV_GONE, &idev->flags)) { + if (dev_is_sata(dev)) + sas_ata_schedule_reset(dev); + else + /* Send the task management part of the reset. */ + ret = isci_task_send_lu_reset_sas(ihost, idev, lun); + } out: - isci_put_device(isci_device); + isci_put_device(idev); return ret; } @@ -940,63 +476,6 @@ int isci_task_clear_nexus_ha(struct sas_ha_struct *ha) /* Task Management Functions. Must be called from process context. */ /** - * isci_abort_task_process_cb() - This is a helper function for the abort task - * TMF command. It manages the request state with respect to the successful - * transmission / completion of the abort task request. - * @cb_state: This parameter specifies when this function was called - after - * the TMF request has been started and after it has timed-out. - * @tmf: This parameter specifies the TMF in progress. - * - * - */ -static void isci_abort_task_process_cb( - enum isci_tmf_cb_state cb_state, - struct isci_tmf *tmf, - void *cb_data) -{ - struct isci_request *old_request; - - old_request = (struct isci_request *)cb_data; - - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: tmf=%p, old_request=%p\n", - __func__, tmf, old_request); - - switch (cb_state) { - - case isci_tmf_started: - /* The TMF has been started. Nothing to do here, since the - * request state was already set to "aborted" by the abort - * task function. - */ - if ((old_request->status != aborted) - && (old_request->status != completed)) - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: Bad request status (%d): tmf=%p, old_request=%p\n", - __func__, old_request->status, tmf, old_request); - break; - - case isci_tmf_timed_out: - - /* Set the task's state to "aborting", since the abort task - * function thread set it to "aborted" (above) in anticipation - * of the task management request working correctly. Since the - * timeout has now fired, the TMF request failed. We set the - * state such that the request completion will indicate the - * device is no longer present. - */ - isci_request_change_state(old_request, aborting); - break; - - default: - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: Bad cb_state (%d): tmf=%p, old_request=%p\n", - __func__, cb_state, tmf, old_request); - break; - } -} - -/** * isci_task_abort_task() - This function is one of the SAS Domain Template * functions. This function is called by libsas to abort a specified task. * @task: This parameter specifies the SAS task to abort. @@ -1005,22 +484,21 @@ static void isci_abort_task_process_cb( */ int isci_task_abort_task(struct sas_task *task) { - struct isci_host *isci_host = dev_to_ihost(task->dev); + struct isci_host *ihost = dev_to_ihost(task->dev); DECLARE_COMPLETION_ONSTACK(aborted_io_completion); struct isci_request *old_request = NULL; - enum isci_request_status old_state; - struct isci_remote_device *isci_device = NULL; + struct isci_remote_device *idev = NULL; struct isci_tmf tmf; int ret = TMF_RESP_FUNC_FAILED; unsigned long flags; - bool any_dev_reset = false; + int target_done_already = 0; /* Get the isci_request reference from the task. Note that * this check does not depend on the pending request list * in the device, because tasks driving resets may land here * after completion in the core. */ - spin_lock_irqsave(&isci_host->scic_lock, flags); + spin_lock_irqsave(&ihost->scic_lock, flags); spin_lock(&task->task_state_lock); old_request = task->lldd_task; @@ -1028,172 +506,111 @@ int isci_task_abort_task(struct sas_task *task) /* If task is already done, the request isn't valid */ if (!(task->task_state_flags & SAS_TASK_STATE_DONE) && (task->task_state_flags & SAS_TASK_AT_INITIATOR) && - old_request) - isci_device = isci_lookup_device(task->dev); - - spin_unlock(&task->task_state_lock); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - - dev_dbg(&isci_host->pdev->dev, - "%s: task = %p\n", __func__, task); - - if (!isci_device || !old_request) - goto out; - - set_bit(IDEV_EH, &isci_device->flags); - - /* This version of the driver will fail abort requests for - * SATA/STP. Failing the abort request this way will cause the - * SCSI error handler thread to escalate to LUN reset - */ - if (sas_protocol_ata(task->task_proto)) { - dev_dbg(&isci_host->pdev->dev, - " task %p is for a STP/SATA device;" - " returning TMF_RESP_FUNC_FAILED\n" - " to cause a LUN reset...\n", task); - goto out; + old_request) { + idev = isci_get_device(task->dev->lldd_dev); + target_done_already = test_bit(IREQ_COMPLETE_IN_TARGET, + &old_request->flags); } + spin_unlock(&task->task_state_lock); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, - "%s: old_request == %p\n", __func__, old_request); - - any_dev_reset = isci_device_is_reset_pending(isci_host, isci_device); - - spin_lock_irqsave(&task->task_state_lock, flags); - - any_dev_reset = any_dev_reset || (task->task_state_flags & SAS_TASK_NEED_DEV_RESET); - - /* If the extraction of the request reference from the task - * failed, then the request has been completed (or if there is a - * pending reset then this abort request function must be failed - * in order to escalate to the target reset). + dev_warn(&ihost->pdev->dev, + "%s: dev = %p (%s%s), task = %p, old_request == %p\n", + __func__, idev, + (dev_is_sata(task->dev) ? "STP/SATA" + : ((dev_is_expander(task->dev)) + ? "SMP" + : "SSP")), + ((idev) ? ((test_bit(IDEV_GONE, &idev->flags)) + ? " IDEV_GONE" + : "") + : " <NULL>"), + task, old_request); + + /* Device reset conditions signalled in task_state_flags are the + * responsbility of libsas to observe at the start of the error + * handler thread. */ - if ((old_request == NULL) || any_dev_reset) { - - /* If the device reset task flag is set, fail the task - * management request. Otherwise, the original request - * has completed. - */ - if (any_dev_reset) { - - /* Turn off the task's DONE to make sure this - * task is escalated to a target reset. - */ - task->task_state_flags &= ~SAS_TASK_STATE_DONE; - - /* Make the reset happen as soon as possible. */ - task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; - - spin_unlock_irqrestore(&task->task_state_lock, flags); - - /* Fail the task management request in order to - * escalate to the target reset. - */ - ret = TMF_RESP_FUNC_FAILED; - - dev_dbg(&isci_host->pdev->dev, - "%s: Failing task abort in order to " - "escalate to target reset because\n" - "SAS_TASK_NEED_DEV_RESET is set for " - "task %p on dev %p\n", - __func__, task, isci_device); - - - } else { - /* The request has already completed and there - * is nothing to do here other than to set the task - * done bit, and indicate that the task abort function - * was sucessful. - */ - isci_set_task_doneflags(task); - - spin_unlock_irqrestore(&task->task_state_lock, flags); + if (!idev || !old_request) { + /* The request has already completed and there + * is nothing to do here other than to set the task + * done bit, and indicate that the task abort function + * was successful. + */ + spin_lock_irqsave(&task->task_state_lock, flags); + task->task_state_flags |= SAS_TASK_STATE_DONE; + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + spin_unlock_irqrestore(&task->task_state_lock, flags); - ret = TMF_RESP_FUNC_COMPLETE; + ret = TMF_RESP_FUNC_COMPLETE; - dev_dbg(&isci_host->pdev->dev, - "%s: abort task not needed for %p\n", - __func__, task); - } + dev_warn(&ihost->pdev->dev, + "%s: abort task not needed for %p\n", + __func__, task); goto out; - } else { - spin_unlock_irqrestore(&task->task_state_lock, flags); } - - spin_lock_irqsave(&isci_host->scic_lock, flags); - - /* Check the request status and change to "aborted" if currently - * "starting"; if true then set the I/O kernel completion - * struct that will be triggered when the request completes. - */ - old_state = isci_task_validate_request_to_abort( - old_request, isci_host, isci_device, - &aborted_io_completion); - if ((old_state != started) && - (old_state != completed) && - (old_state != aborting)) { - - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - - /* The request was already being handled by someone else (because - * they got to set the state away from started). - */ - dev_dbg(&isci_host->pdev->dev, - "%s: device = %p; old_request %p already being aborted\n", - __func__, - isci_device, old_request); - ret = TMF_RESP_FUNC_COMPLETE; + /* Suspend the RNC, kill the TC */ + if (isci_remote_device_suspend_terminate(ihost, idev, old_request) + != SCI_SUCCESS) { + dev_warn(&ihost->pdev->dev, + "%s: isci_remote_device_reset_terminate(dev=%p, " + "req=%p, task=%p) failed\n", + __func__, idev, old_request, task); + ret = TMF_RESP_FUNC_FAILED; goto out; } + spin_lock_irqsave(&ihost->scic_lock, flags); + if (task->task_proto == SAS_PROTOCOL_SMP || - test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { + sas_protocol_ata(task->task_proto) || + target_done_already || + test_bit(IDEV_GONE, &idev->flags)) { - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, - "%s: SMP request (%d)" - " or complete_in_target (%d), thus no TMF\n", - __func__, (task->task_proto == SAS_PROTOCOL_SMP), - test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)); + /* No task to send, so explicitly resume the device here */ + isci_remote_device_resume_from_abort(ihost, idev); - /* Set the state on the task. */ - isci_task_all_done(task); + dev_warn(&ihost->pdev->dev, + "%s: %s request" + " or complete_in_target (%d), " + "or IDEV_GONE (%d), thus no TMF\n", + __func__, + ((task->task_proto == SAS_PROTOCOL_SMP) + ? "SMP" + : (sas_protocol_ata(task->task_proto) + ? "SATA/STP" + : "<other>") + ), + test_bit(IREQ_COMPLETE_IN_TARGET, + &old_request->flags), + test_bit(IDEV_GONE, &idev->flags)); - ret = TMF_RESP_FUNC_COMPLETE; + spin_lock_irqsave(&task->task_state_lock, flags); + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + task->task_state_flags |= SAS_TASK_STATE_DONE; + spin_unlock_irqrestore(&task->task_state_lock, flags); - /* Stopping and SMP devices are not sent a TMF, and are not - * reset, but the outstanding I/O request is terminated below. - */ + ret = TMF_RESP_FUNC_COMPLETE; } else { /* Fill in the tmf stucture */ isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort, - isci_abort_task_process_cb, old_request); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* half second timeout. */ - ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, + /* Send the task management request. */ + #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* 1/2 second timeout */ + ret = isci_task_execute_tmf(ihost, idev, &tmf, ISCI_ABORT_TASK_TIMEOUT_MS); - - if (ret != TMF_RESP_FUNC_COMPLETE) - dev_dbg(&isci_host->pdev->dev, - "%s: isci_task_send_tmf failed\n", - __func__); } - if (ret == TMF_RESP_FUNC_COMPLETE) { - set_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags); - - /* Clean up the request on our side, and wait for the aborted - * I/O to complete. - */ - isci_terminate_request_core(isci_host, isci_device, old_request); - } - - /* Make sure we do not leave a reference to aborted_io_completion */ - old_request->io_request_completion = NULL; - out: - isci_put_device(isci_device); +out: + dev_warn(&ihost->pdev->dev, + "%s: Done; dev = %p, task = %p , old_request == %p\n", + __func__, idev, task, old_request); + isci_put_device(idev); return ret; } @@ -1288,345 +705,84 @@ isci_task_request_complete(struct isci_host *ihost, enum sci_task_status completion_status) { struct isci_tmf *tmf = isci_request_access_tmf(ireq); - struct completion *tmf_complete; + struct completion *tmf_complete = NULL; dev_dbg(&ihost->pdev->dev, "%s: request = %p, status=%d\n", __func__, ireq, completion_status); - isci_request_change_state(ireq, completed); - - tmf->status = completion_status; set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags); - if (tmf->proto == SAS_PROTOCOL_SSP) { - memcpy(&tmf->resp.resp_iu, - &ireq->ssp.rsp, - SSP_RESP_IU_MAX_SIZE); - } else if (tmf->proto == SAS_PROTOCOL_SATA) { - memcpy(&tmf->resp.d2h_fis, - &ireq->stp.rsp, - sizeof(struct dev_to_host_fis)); + if (tmf) { + tmf->status = completion_status; + + if (tmf->proto == SAS_PROTOCOL_SSP) { + memcpy(&tmf->resp.resp_iu, + &ireq->ssp.rsp, + SSP_RESP_IU_MAX_SIZE); + } else if (tmf->proto == SAS_PROTOCOL_SATA) { + memcpy(&tmf->resp.d2h_fis, + &ireq->stp.rsp, + sizeof(struct dev_to_host_fis)); + } + /* PRINT_TMF( ((struct isci_tmf *)request->task)); */ + tmf_complete = tmf->complete; } - - /* PRINT_TMF( ((struct isci_tmf *)request->task)); */ - tmf_complete = tmf->complete; - sci_controller_complete_io(ihost, ireq->target_device, ireq); /* set the 'terminated' flag handle to make sure it cannot be terminated * or completed again. */ set_bit(IREQ_TERMINATED, &ireq->flags); - isci_request_change_state(ireq, unallocated); - list_del_init(&ireq->dev_node); - - /* The task management part completes last. */ - complete(tmf_complete); -} - -static void isci_smp_task_timedout(unsigned long _task) -{ - struct sas_task *task = (void *) _task; - unsigned long flags; - - spin_lock_irqsave(&task->task_state_lock, flags); - if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) - task->task_state_flags |= SAS_TASK_STATE_ABORTED; - spin_unlock_irqrestore(&task->task_state_lock, flags); - - complete(&task->completion); -} - -static void isci_smp_task_done(struct sas_task *task) -{ - if (!del_timer(&task->timer)) - return; - complete(&task->completion); -} - -static struct sas_task *isci_alloc_task(void) -{ - struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL); - - if (task) { - INIT_LIST_HEAD(&task->list); - spin_lock_init(&task->task_state_lock); - task->task_state_flags = SAS_TASK_STATE_PENDING; - init_timer(&task->timer); - init_completion(&task->completion); - } - - return task; -} + if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) + wake_up_all(&ihost->eventq); -static void isci_free_task(struct isci_host *ihost, struct sas_task *task) -{ - if (task) { - BUG_ON(!list_empty(&task->list)); - kfree(task); - } -} - -static int isci_smp_execute_task(struct isci_host *ihost, - struct domain_device *dev, void *req, - int req_size, void *resp, int resp_size) -{ - int res, retry; - struct sas_task *task = NULL; - - for (retry = 0; retry < 3; retry++) { - task = isci_alloc_task(); - if (!task) - return -ENOMEM; - - task->dev = dev; - task->task_proto = dev->tproto; - sg_init_one(&task->smp_task.smp_req, req, req_size); - sg_init_one(&task->smp_task.smp_resp, resp, resp_size); - - task->task_done = isci_smp_task_done; - - task->timer.data = (unsigned long) task; - task->timer.function = isci_smp_task_timedout; - task->timer.expires = jiffies + 10*HZ; - add_timer(&task->timer); - - res = isci_task_execute_task(task, 1, GFP_KERNEL); - - if (res) { - del_timer(&task->timer); - dev_dbg(&ihost->pdev->dev, - "%s: executing SMP task failed:%d\n", - __func__, res); - goto ex_err; - } + if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags)) + isci_free_tag(ihost, ireq->io_tag); - wait_for_completion(&task->completion); - res = -ECOMM; - if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { - dev_dbg(&ihost->pdev->dev, - "%s: smp task timed out or aborted\n", - __func__); - isci_task_abort_task(task); - if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { - dev_dbg(&ihost->pdev->dev, - "%s: SMP task aborted and not done\n", - __func__); - goto ex_err; - } - } - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { - res = 0; - break; - } - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAS_DATA_UNDERRUN) { - /* no error, but return the number of bytes of - * underrun */ - res = task->task_status.residual; - break; - } - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAS_DATA_OVERRUN) { - res = -EMSGSIZE; - break; - } else { - dev_dbg(&ihost->pdev->dev, - "%s: task to dev %016llx response: 0x%x " - "status 0x%x\n", __func__, - SAS_ADDR(dev->sas_addr), - task->task_status.resp, - task->task_status.stat); - isci_free_task(ihost, task); - task = NULL; - } - } -ex_err: - BUG_ON(retry == 3 && task != NULL); - isci_free_task(ihost, task); - return res; -} - -#define DISCOVER_REQ_SIZE 16 -#define DISCOVER_RESP_SIZE 56 - -int isci_smp_get_phy_attached_dev_type(struct isci_host *ihost, - struct domain_device *dev, - int phy_id, int *adt) -{ - struct smp_resp *disc_resp; - u8 *disc_req; - int res; - - disc_resp = kzalloc(DISCOVER_RESP_SIZE, GFP_KERNEL); - if (!disc_resp) - return -ENOMEM; - - disc_req = kzalloc(DISCOVER_REQ_SIZE, GFP_KERNEL); - if (disc_req) { - disc_req[0] = SMP_REQUEST; - disc_req[1] = SMP_DISCOVER; - disc_req[9] = phy_id; - } else { - kfree(disc_resp); - return -ENOMEM; - } - res = isci_smp_execute_task(ihost, dev, disc_req, DISCOVER_REQ_SIZE, - disc_resp, DISCOVER_RESP_SIZE); - if (!res) { - if (disc_resp->result != SMP_RESP_FUNC_ACC) - res = disc_resp->result; - else - *adt = disc_resp->disc.attached_dev_type; - } - kfree(disc_req); - kfree(disc_resp); - - return res; -} - -static void isci_wait_for_smp_phy_reset(struct isci_remote_device *idev, int phy_num) -{ - struct domain_device *dev = idev->domain_dev; - struct isci_port *iport = idev->isci_port; - struct isci_host *ihost = iport->isci_host; - int res, iteration = 0, attached_device_type; - #define STP_WAIT_MSECS 25000 - unsigned long tmo = msecs_to_jiffies(STP_WAIT_MSECS); - unsigned long deadline = jiffies + tmo; - enum { - SMP_PHYWAIT_PHYDOWN, - SMP_PHYWAIT_PHYUP, - SMP_PHYWAIT_DONE - } phy_state = SMP_PHYWAIT_PHYDOWN; - - /* While there is time, wait for the phy to go away and come back */ - while (time_is_after_jiffies(deadline) && phy_state != SMP_PHYWAIT_DONE) { - int event = atomic_read(&iport->event); - - ++iteration; - - tmo = wait_event_timeout(ihost->eventq, - event != atomic_read(&iport->event) || - !test_bit(IPORT_BCN_BLOCKED, &iport->flags), - tmo); - /* link down, stop polling */ - if (!test_bit(IPORT_BCN_BLOCKED, &iport->flags)) - break; - - dev_dbg(&ihost->pdev->dev, - "%s: iport %p, iteration %d," - " phase %d: time_remaining %lu, bcns = %d\n", - __func__, iport, iteration, phy_state, - tmo, test_bit(IPORT_BCN_PENDING, &iport->flags)); - - res = isci_smp_get_phy_attached_dev_type(ihost, dev, phy_num, - &attached_device_type); - tmo = deadline - jiffies; - - if (res) { - dev_dbg(&ihost->pdev->dev, - "%s: iteration %d, phase %d:" - " SMP error=%d, time_remaining=%lu\n", - __func__, iteration, phy_state, res, tmo); - break; - } - dev_dbg(&ihost->pdev->dev, - "%s: iport %p, iteration %d," - " phase %d: time_remaining %lu, bcns = %d, " - "attdevtype = %x\n", - __func__, iport, iteration, phy_state, - tmo, test_bit(IPORT_BCN_PENDING, &iport->flags), - attached_device_type); - - switch (phy_state) { - case SMP_PHYWAIT_PHYDOWN: - /* Has the device gone away? */ - if (!attached_device_type) - phy_state = SMP_PHYWAIT_PHYUP; - - break; - - case SMP_PHYWAIT_PHYUP: - /* Has the device come back? */ - if (attached_device_type) - phy_state = SMP_PHYWAIT_DONE; - break; - - case SMP_PHYWAIT_DONE: - break; - } - - } - dev_dbg(&ihost->pdev->dev, "%s: done\n", __func__); + /* The task management part completes last. */ + if (tmf_complete) + complete(tmf_complete); } static int isci_reset_device(struct isci_host *ihost, + struct domain_device *dev, struct isci_remote_device *idev) { - struct sas_phy *phy = sas_find_local_phy(idev->domain_dev); - struct isci_port *iport = idev->isci_port; - enum sci_status status; - unsigned long flags; - int rc; + int rc = TMF_RESP_FUNC_COMPLETE, reset_stat = -1; + struct sas_phy *phy = sas_get_local_phy(dev); + struct isci_port *iport = dev->port->lldd_port; dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev); - spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset(idev); - if (status != SCI_SUCCESS) { - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset(%p) returned %d!\n", - __func__, idev, status); - - return TMF_RESP_FUNC_FAILED; - } - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - /* Make sure all pending requests are able to be fully terminated. */ - isci_device_clear_reset_pending(ihost, idev); - - /* If this is a device on an expander, disable BCN processing. */ - if (!scsi_is_sas_phy_local(phy)) - set_bit(IPORT_BCN_BLOCKED, &iport->flags); - - rc = sas_phy_reset(phy, true); - - /* Terminate in-progress I/O now. */ - isci_remote_device_nuke_requests(ihost, idev); - - /* Since all pending TCs have been cleaned, resume the RNC. */ - spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset_complete(idev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - /* If this is a device on an expander, bring the phy back up. */ - if (!scsi_is_sas_phy_local(phy)) { - /* A phy reset will cause the device to go away then reappear. - * Since libsas will take action on incoming BCNs (eg. remove - * a device going through an SMP phy-control driven reset), - * we need to wait until the phy comes back up before letting - * discovery proceed in libsas. - */ - isci_wait_for_smp_phy_reset(idev, phy->number); - - spin_lock_irqsave(&ihost->scic_lock, flags); - isci_port_bcn_enable(ihost, idev->isci_port); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* Suspend the RNC, terminate all outstanding TCs. */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { + rc = TMF_RESP_FUNC_FAILED; + goto out; } + /* Note that since the termination for outstanding requests succeeded, + * this function will return success. This is because the resets will + * only fail if the device has been removed (ie. hotplug), and the + * primary duty of this function is to cleanup tasks, so that is the + * relevant status. + */ + if (!test_bit(IDEV_GONE, &idev->flags)) { + if (scsi_is_sas_phy_local(phy)) { + struct isci_phy *iphy = &ihost->phys[phy->number]; - if (status != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset_complete(%p) " - "returned %d!\n", __func__, idev, status); + reset_stat = isci_port_perform_hard_reset(ihost, iport, + iphy); + } else + reset_stat = sas_phy_reset(phy, !dev_is_sata(dev)); } + /* Explicitly resume the RNC here, since there was no task sent. */ + isci_remote_device_resume_from_abort(ihost, idev); - dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev); - + dev_dbg(&ihost->pdev->dev, "%s: idev %p complete, reset_stat=%d.\n", + __func__, idev, reset_stat); + out: + sas_put_local_phy(phy); return rc; } @@ -1638,38 +794,18 @@ int isci_task_I_T_nexus_reset(struct domain_device *dev) int ret; spin_lock_irqsave(&ihost->scic_lock, flags); - idev = isci_lookup_device(dev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - if (!idev || !test_bit(IDEV_EH, &idev->flags)) { - ret = TMF_RESP_FUNC_COMPLETE; - goto out; - } - - ret = isci_reset_device(ihost, idev); - out: - isci_put_device(idev); - return ret; -} - -int isci_bus_reset_handler(struct scsi_cmnd *cmd) -{ - struct domain_device *dev = sdev_to_domain_dev(cmd->device); - struct isci_host *ihost = dev_to_ihost(dev); - struct isci_remote_device *idev; - unsigned long flags; - int ret; - - spin_lock_irqsave(&ihost->scic_lock, flags); - idev = isci_lookup_device(dev); + idev = isci_get_device(dev->lldd_dev); spin_unlock_irqrestore(&ihost->scic_lock, flags); if (!idev) { - ret = TMF_RESP_FUNC_COMPLETE; + /* XXX: need to cleanup any ireqs targeting this + * domain_device + */ + ret = -ENODEV; goto out; } - ret = isci_reset_device(ihost, idev); + ret = isci_reset_device(ihost, dev, idev); out: isci_put_device(idev); return ret; |