static void sci_remote_node_context_await_suspend_state_exit(
	struct sci_base_state_machine *sm)
{
	struct sci_remote_node_context *rnc
		= container_of(sm, typeof(*rnc), sm);
	struct isci_remote_device *idev = rnc_to_dev(rnc);

	if (dev_is_sata(idev->domain_dev))
		isci_dev_set_hang_detection_timeout(idev, 0);
}
static void sci_remote_node_context_construct_buffer(struct sci_remote_node_context *sci_rnc)
{
	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
	struct domain_device *dev = idev->domain_dev;
	int rni = sci_rnc->remote_node_index;
	union scu_remote_node_context *rnc;
	struct isci_host *ihost;
	__le64 sas_addr;

	ihost = idev->owning_port->owning_controller;
	rnc = sci_rnc_by_id(ihost, rni);

	memset(rnc, 0, sizeof(union scu_remote_node_context)
		* sci_remote_device_node_count(idev));

	rnc->ssp.remote_node_index = rni;
	rnc->ssp.remote_node_port_width = idev->device_port_width;
	rnc->ssp.logical_port_index = idev->owning_port->physical_port_index;

	/* sas address is __be64, context ram format is __le64 */
	sas_addr = cpu_to_le64(SAS_ADDR(dev->sas_addr));
	rnc->ssp.remote_sas_address_hi = upper_32_bits(sas_addr);
	rnc->ssp.remote_sas_address_lo = lower_32_bits(sas_addr);

	rnc->ssp.nexus_loss_timer_enable = true;
	rnc->ssp.check_bit               = false;
	rnc->ssp.is_valid                = false;
	rnc->ssp.is_remote_node_context  = true;
	rnc->ssp.function_number         = 0;

	rnc->ssp.arbitration_wait_time = 0;

	if (dev_is_sata(dev)) {
		rnc->ssp.connection_occupancy_timeout =
			ihost->user_parameters.stp_max_occupancy_timeout;
		rnc->ssp.connection_inactivity_timeout =
			ihost->user_parameters.stp_inactivity_timeout;
	} else {
		rnc->ssp.connection_occupancy_timeout  =
			ihost->user_parameters.ssp_max_occupancy_timeout;
		rnc->ssp.connection_inactivity_timeout =
			ihost->user_parameters.ssp_inactivity_timeout;
	}

	rnc->ssp.initial_arbitration_wait_time = 0;

	/* Open Address Frame Parameters */
	rnc->ssp.oaf_connection_rate = idev->connection_rate;
	rnc->ssp.oaf_features = 0;
	rnc->ssp.oaf_source_zone_group = 0;
	rnc->ssp.oaf_more_compatibility_features = 0;
}
int pm8001_slave_alloc(struct scsi_device *scsi_dev)
{
	struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
	if (dev_is_sata(dev)) {
		/* We don't need to rescan targets
		* if REPORT_LUNS request is failed
		*/
		if (scsi_dev->lun > 0)
			return -ENXIO;
		scsi_dev->tagged_supported = 1;
	}
	return sas_slave_alloc(scsi_dev);
}
Exemple #4
0
static int isci_reset_device(struct isci_host *ihost,
			     struct domain_device *dev,
			     struct isci_remote_device *idev)
{
	int rc;
	unsigned long flags;
	enum sci_status status;
	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);
	spin_unlock_irqrestore(&ihost->scic_lock, flags);

	if (status != SCI_SUCCESS) {
		dev_dbg(&ihost->pdev->dev,
			 "%s: sci_remote_device_reset(%p) returned %d!\n",
			 __func__, idev, status);
		rc = TMF_RESP_FUNC_FAILED;
		goto out;
	}

	if (scsi_is_sas_phy_local(phy)) {
		struct isci_phy *iphy = &ihost->phys[phy->number];

		rc = isci_port_perform_hard_reset(ihost, iport, iphy);
	} else
		rc = sas_phy_reset(phy, !dev_is_sata(dev));

	/* 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 (status != SCI_SUCCESS) {
		dev_dbg(&ihost->pdev->dev,
			 "%s: sci_remote_device_reset_complete(%p) "
			 "returned %d!\n", __func__, idev, status);
	}

	dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev);
 out:
	sas_put_local_phy(phy);
	return rc;
}
int pm8001_slave_configure(struct scsi_device *sdev)
{
	struct domain_device *dev = sdev_to_domain_dev(sdev);
	int ret = sas_slave_configure(sdev);
	if (ret)
		return ret;
	if (dev_is_sata(dev)) {
	#ifdef PM8001_DISABLE_NCQ
		struct ata_port *ap = dev->sata_dev.ap;
		struct ata_device *adev = ap->link.device;
		adev->flags |= ATA_DFLAG_NCQ_OFF;
		scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1);
	#endif
	}
	return 0;
}
Exemple #6
0
int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
{
	struct isci_host *ihost = dev_to_ihost(dev);
	struct isci_remote_device *idev;
	unsigned long flags;
	int ret = TMF_RESP_FUNC_COMPLETE;

	spin_lock_irqsave(&ihost->scic_lock, flags);
	idev = isci_get_device(dev->lldd_dev);
	spin_unlock_irqrestore(&ihost->scic_lock, flags);

	dev_dbg(&ihost->pdev->dev,
		"%s: domain_device=%p, isci_host=%p; isci_device=%p\n",
		__func__, dev, ihost, idev);

	if (!idev) {
		/* If the device is gone, escalate to I_T_Nexus_Reset. */
		dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__);

		ret = TMF_RESP_FUNC_FAILED;
		goto out;
	}

	/* 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(idev);
	return ret;
}
static void sci_remote_node_context_resuming_state_enter(struct sci_base_state_machine *sm)
{
	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
	struct isci_remote_device *idev;
	struct domain_device *dev;

	idev = rnc_to_dev(rnc);
	dev = idev->domain_dev;

	/*
	 * For direct attached SATA devices we need to clear the TLCR
	 * NCQ to TCi tag mapping on the phy and in cases where we
	 * resume because of a target reset we also need to update
	 * the STPTLDARNI register with the RNi of the device
	 */
	if (dev_is_sata(dev) && !dev->parent)
		sci_port_setup_transports(idev->owning_port, rnc->remote_node_index);

	sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_RESUME);
}
static void sci_remote_node_context_validate_context_buffer(struct sci_remote_node_context *sci_rnc)
{
	union scu_remote_node_context *rnc_buffer;
	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
	struct domain_device *dev = idev->domain_dev;
	struct isci_host *ihost = idev->owning_port->owning_controller;

	rnc_buffer = sci_rnc_by_id(ihost, sci_rnc->remote_node_index);

	rnc_buffer->ssp.is_valid = true;

	if (dev_is_sata(dev) && dev->parent) {
		sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_96);
	} else {
		sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_32);

		if (!dev->parent)
			sci_port_setup_transports(idev->owning_port,
						  sci_rnc->remote_node_index);
	}
}
Exemple #9
0
static int isci_reset_device(struct isci_host *ihost,
			     struct domain_device *dev,
			     struct isci_remote_device *idev)
{
	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);

	/* 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];

			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, reset_stat=%d.\n",
		__func__, idev, reset_stat);
 out:
	sas_put_local_phy(phy);
	return rc;
}
Exemple #10
0
int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
{
	struct isci_host *isci_host = dev_to_ihost(dev);
	struct isci_remote_device *isci_device;
	unsigned long flags;
	int ret;

	spin_lock_irqsave(&isci_host->scic_lock, flags);
	isci_device = isci_lookup_device(dev);
	spin_unlock_irqrestore(&isci_host->scic_lock, flags);

	dev_dbg(&isci_host->pdev->dev,
		"%s: domain_device=%p, isci_host=%p; isci_device=%p\n",
		 __func__, dev, isci_host, isci_device);

	if (!isci_device) {
		/* If the device is gone, stop the escalations. */
		dev_dbg(&isci_host->pdev->dev, "%s: No dev\n", __func__);

		ret = TMF_RESP_FUNC_COMPLETE;
		goto out;
	}

	/* Send the task management part of the reset. */
	if (dev_is_sata(dev)) {
		sas_ata_schedule_reset(dev);
		ret = TMF_RESP_FUNC_COMPLETE;
	} 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);

 out:
	isci_put_device(isci_device);
	return ret;
}
int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
{
	struct isci_host *isci_host = dev_to_ihost(dev);
	struct isci_remote_device *isci_device;
	unsigned long flags;
	int ret;

	spin_lock_irqsave(&isci_host->scic_lock, flags);
	isci_device = isci_lookup_device(dev);
	spin_unlock_irqrestore(&isci_host->scic_lock, flags);

	dev_dbg(&isci_host->pdev->dev,
		"%s: domain_device=%p, isci_host=%p; isci_device=%p\n",
		 __func__, dev, isci_host, isci_device);

	if (!isci_device) {
		
		dev_dbg(&isci_host->pdev->dev, "%s: No dev\n", __func__);

		ret = TMF_RESP_FUNC_COMPLETE;
		goto out;
	}

	
	if (dev_is_sata(dev)) {
		sas_ata_schedule_reset(dev);
		ret = TMF_RESP_FUNC_COMPLETE;
	} else
		ret = isci_task_send_lu_reset_sas(isci_host, isci_device, lun);

	
	if (ret == TMF_RESP_FUNC_COMPLETE)
		
		isci_terminate_pending_requests(isci_host,
						isci_device);

 out:
	isci_put_device(isci_device);
	return ret;
}
Exemple #12
0
/**
 * 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.
 *
 * status, zero indicates success.
 */
int isci_task_abort_task(struct sas_task *task)
{
	struct isci_host *ihost = dev_to_ihost(task->dev);
	DECLARE_COMPLETION_ONSTACK(aborted_io_completion);
	struct isci_request       *old_request = NULL;
	struct isci_remote_device *idev = NULL;
	struct isci_tmf           tmf;
	int                       ret = TMF_RESP_FUNC_FAILED;
	unsigned long             flags;
	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(&ihost->scic_lock, flags);
	spin_lock(&task->task_state_lock);

	old_request = task->lldd_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) {
		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_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 (!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;

		dev_warn(&ihost->pdev->dev,
			 "%s: abort task not needed for %p\n",
			 __func__, task);
		goto out;
	}
	/* 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 ||
	    sas_protocol_ata(task->task_proto) ||
	    target_done_already ||
	    test_bit(IDEV_GONE, &idev->flags)) {

		spin_unlock_irqrestore(&ihost->scic_lock, flags);

		/* No task to send, so explicitly resume the device here */
		isci_remote_device_resume_from_abort(ihost, idev);

		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));

		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);

		ret = TMF_RESP_FUNC_COMPLETE;
	} else {
		/* Fill in the tmf stucture */
		isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort,
					       old_request);

		spin_unlock_irqrestore(&ihost->scic_lock, flags);

		/* 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);
	}
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;
}
enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
						    scics_sds_remote_node_context_callback cb_fn,
						    void *cb_p)
{
	enum scis_sds_remote_node_context_states state;
	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);

	state = sci_rnc->sm.current_state_id;
	dev_dbg(scirdev_to_dev(idev),
		"%s: state %s, cb_fn = %p, cb_p = %p; dest_state = %d; "
			"dev resume path %s\n",
		__func__, rnc_state_name(state), cb_fn, cb_p,
		sci_rnc->destination_state,
		test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)
			? "<abort active>" : "<normal>");

	switch (state) {
	case SCI_RNC_INITIAL:
		if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
			return SCI_FAILURE_INVALID_STATE;

		sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn,	cb_p,
							RNC_DEST_READY);
		if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) {
			sci_remote_node_context_construct_buffer(sci_rnc);
			sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING);
		}
		return SCI_SUCCESS;

	case SCI_RNC_POSTING:
	case SCI_RNC_INVALIDATING:
	case SCI_RNC_RESUMING:
		/* We are still waiting to post when a resume was
		 * requested.
		 */
		switch (sci_rnc->destination_state) {
		case RNC_DEST_SUSPENDED:
		case RNC_DEST_SUSPENDED_RESUME:
			/* Previously waiting to suspend after posting.
			 * Now continue onto resumption.
			 */
			sci_remote_node_context_setup_to_resume(
				sci_rnc, cb_fn, cb_p,
				RNC_DEST_SUSPENDED_RESUME);
			break;
		default:
			sci_remote_node_context_setup_to_resume(
				sci_rnc, cb_fn, cb_p,
				RNC_DEST_READY);
			break;
		}
		return SCI_SUCCESS;

	case SCI_RNC_TX_SUSPENDED:
	case SCI_RNC_TX_RX_SUSPENDED:
		{
			struct domain_device *dev = idev->domain_dev;
			/* If this is an expander attached SATA device we must
			 * invalidate and repost the RNC since this is the only
			 * way to clear the TCi to NCQ tag mapping table for
			 * the RNi. All other device types we can just resume.
			 */
			sci_remote_node_context_setup_to_resume(
				sci_rnc, cb_fn, cb_p, RNC_DEST_READY);

			if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) {
				if ((dev_is_sata(dev) && dev->parent) ||
				    (sci_rnc->destination_state == RNC_DEST_FINAL))
					sci_change_state(&sci_rnc->sm,
							 SCI_RNC_INVALIDATING);
				else
					sci_change_state(&sci_rnc->sm,
							 SCI_RNC_RESUMING);
			}
		}
		return SCI_SUCCESS;

	case SCI_RNC_AWAIT_SUSPENSION:
		sci_remote_node_context_setup_to_resume(
			sci_rnc, cb_fn, cb_p, RNC_DEST_SUSPENDED_RESUME);
		return SCI_SUCCESS;
	default:
		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
			 "%s: invalid state %s\n", __func__,
			 rnc_state_name(state));
		return SCI_FAILURE_INVALID_STATE;
	}
}