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Commit 38d8879b authored by Dan Williams's avatar Dan Williams
Browse files

isci: combine request flags 



Combine three bools into one unsigned long 'flags'.  Doesn't increase the
request size due to packing. (to do: optimize the structure layout).

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 312e0c24

drivers/scsi/isci/request.c

+21 −27
Original line number Diff line number Diff line
@@ -2183,7 +2183,7 @@ static void isci_request_set_open_reject_status( 
	enum sas_open_rej_reason open_rej_reason)

{

	/* Task in the target is done. */

	request->complete_in_target       = true;

	set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

	*response_ptr                     = SAS_TASK_UNDELIVERED;

	*status_ptr                       = SAS_OPEN_REJECT;

	*complete_to_host_ptr             = isci_perform_normal_io_completion;
@@ -2248,7 +2248,7 @@ static void isci_request_handle_controller_specific_errors( 
			else

				*status_ptr = SAS_ABORTED_TASK;



			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



			*complete_to_host_ptr =

				isci_perform_normal_io_completion;
@@ -2261,7 +2261,7 @@ static void isci_request_handle_controller_specific_errors( 
			else

				*status_ptr = SAM_STAT_TASK_ABORTED;



			request->complete_in_target = false;

			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



			*complete_to_host_ptr =

				isci_perform_error_io_completion;
@@ -2292,7 +2292,7 @@ static void isci_request_handle_controller_specific_errors( 
		else

			*status_ptr = SAS_ABORTED_TASK;



		request->complete_in_target = true;

		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



		*complete_to_host_ptr = isci_perform_normal_io_completion;

		break;
@@ -2397,11 +2397,11 @@ static void isci_request_handle_controller_specific_errors( 
		*status_ptr = SAM_STAT_TASK_ABORTED;



		if (task->task_proto == SAS_PROTOCOL_SMP) {

			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



			*complete_to_host_ptr = isci_perform_normal_io_completion;

		} else {

			request->complete_in_target = false;

			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



			*complete_to_host_ptr = isci_perform_error_io_completion;

		}
@@ -2552,7 +2552,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
		 *

		 * The target is still there (since the TMF was successful).

		 */

		request->complete_in_target = true;

		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

		response = SAS_TASK_COMPLETE;



		/* See if the device has been/is being stopped. Note
@@ -2579,7 +2579,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
		 * Aborting also means an external thread is explicitly managing

		 * this request, so that we do not complete it up the stack.

		 */

		request->complete_in_target = true;

		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

		response = SAS_TASK_UNDELIVERED;



		if (!idev)
@@ -2605,7 +2605,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
		 * the device (reset, tear down, etc.), and the I/O needs

		 * to be completed up the stack.

		 */

		request->complete_in_target = true;

		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

		response = SAS_TASK_UNDELIVERED;



		/* See if the device has been/is being stopped. Note
@@ -2675,7 +2675,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
			/* use the task status set in the task struct by the

			 * isci_request_process_response_iu call.

			 */

			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

			response = task->task_status.resp;

			status = task->task_status.stat;

			break;
@@ -2685,7 +2685,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 


			response = SAS_TASK_COMPLETE;

			status   = SAM_STAT_GOOD;

			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);



			if (task->task_proto == SAS_PROTOCOL_SMP) {

				void *rsp = &request->sci.smp.rsp;
@@ -2737,7 +2737,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
			/* The request was terminated explicitly.  No handling

			 * is needed in the SCSI error handler path.

			 */

			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

			response = SAS_TASK_UNDELIVERED;



			/* See if the device has been/is being stopped. Note
@@ -2777,7 +2777,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
			status = SAM_STAT_TASK_ABORTED;



			complete_to_host = isci_perform_error_io_completion;

			request->complete_in_target = false;

			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

			break;



		case SCI_FAILURE_RETRY_REQUIRED:
@@ -2790,7 +2790,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
				status = SAS_ABORTED_TASK;



			complete_to_host = isci_perform_normal_io_completion;

			request->complete_in_target = true;

			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

			break;
@@ -2813,10 +2813,10 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
				status = SAS_ABORTED_TASK;



			if (SAS_PROTOCOL_SMP == task->task_proto) {

				request->complete_in_target = true;

				set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

				complete_to_host = isci_perform_normal_io_completion;

			} else {

				request->complete_in_target = false;

				clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);

				complete_to_host = isci_perform_error_io_completion;

			}

			break;
@@ -2870,7 +2870,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, 
	 * terminated again, and to cause any calls into abort

	 * task to recognize the already completed case.

	 */

	request->terminated = true;

	set_bit(IREQ_TERMINATED, &request->flags);

}



static void scic_sds_request_started_state_enter(struct sci_base_state_machine *sm)
@@ -2919,7 +2919,7 @@ static void scic_sds_request_completed_state_enter(struct sci_base_state_machine 
	struct isci_request *ireq = sci_req_to_ireq(sci_req);



	/* Tell the SCI_USER that the IO request is complete */

	if (sci_req->is_task_management_request == false)

	if (!test_bit(IREQ_TMF, &ireq->flags))

		isci_request_io_request_complete(ihost, ireq,

						 sci_req->sci_status);

	else
@@ -3032,8 +3032,6 @@ scic_sds_general_request_construct(struct scic_sds_controller *scic, 
	sci_req->scu_status   = 0;

	sci_req->post_context = 0xFFFFFFFF;

	sci_req->tc = &scic->task_context_table[ISCI_TAG_TCI(io_tag)];



	sci_req->is_task_management_request = false;

	WARN_ONCE(io_tag == SCI_CONTROLLER_INVALID_IO_TAG, "straggling invalid tag usage\n");

}
@@ -3077,7 +3075,7 @@ enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, 


	if (dev->dev_type == SAS_END_DEV ||

	    dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {

		sci_req->is_task_management_request = true;

		set_bit(IREQ_TMF, &sci_req_to_ireq(sci_req)->flags);

		memset(sci_req->tc, 0, sizeof(struct scu_task_context));

	} else

		status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
@@ -3379,12 +3377,8 @@ static struct isci_request *isci_request_alloc_core(struct isci_host *ihost, 
	ireq->request_daddr = handle;

	ireq->isci_host = ihost;

	ireq->io_request_completion = NULL;

	ireq->terminated = false;



	ireq->flags = 0;

	ireq->num_sg_entries = 0;



	ireq->complete_in_target = false;



	INIT_LIST_HEAD(&ireq->completed_node);

	INIT_LIST_HEAD(&ireq->dev_node);
@@ -3496,7 +3490,7 @@ int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *ide 
		 * hardware, so clear the request handle

		 * here so no terminations will be done.

		 */

		ireq->terminated = true;

		set_bit(IREQ_TERMINATED, &ireq->flags);

		isci_request_change_state(ireq, completed);

	}

	spin_unlock_irqrestore(&ihost->scic_lock, flags);

drivers/scsi/isci/request.h

+4 −8
Original line number Diff line number Diff line
@@ -209,12 +209,6 @@ struct scic_sds_request { 
	#define SCU_SGL_SIZE ((SCI_MAX_SCATTER_GATHER_ELEMENTS + 1) / 2)

	struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));



	/*

	 * This field indicates if this request is a task management request or

	 * normal IO request.

	 */

	bool is_task_management_request;



	/*

	 * This field is a pointer to the stored rx frame data.  It is used in

	 * STP internal requests and SMP response frames.  If this field is
@@ -260,8 +254,10 @@ struct isci_request { 
	enum isci_request_status status;

	enum task_type ttype;

	unsigned short io_tag;

	bool complete_in_target;

	bool terminated;

	#define IREQ_COMPLETE_IN_TARGET 0

	#define IREQ_TERMINATED 1

	#define IREQ_TMF 2

	unsigned long flags;



	union ttype_ptr_union {

		struct sas_task *io_task_ptr;   /* When ttype==io_task  */

drivers/scsi/isci/task.c

+11 −12
Original line number Diff line number Diff line
@@ -560,13 +560,13 @@ static void isci_terminate_request_core( 
	/* Note that we are not going to control

	 * the target to abort the request.

	 */

	isci_request->complete_in_target = true;

	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 (!isci_request->terminated) {

	if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) {

		was_terminated = true;

		needs_cleanup_handling = true;

		status = scic_controller_terminate_request(
@@ -609,7 +609,7 @@ static void isci_terminate_request_core( 
						  flags);



				/* Check for state changes. */

				if (!isci_request->terminated) {

				if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) {



					/* The best we can do is to have the

					 * request die a silent death if it
@@ -1098,9 +1098,8 @@ int isci_task_abort_task(struct sas_task *task) 
		ret = TMF_RESP_FUNC_COMPLETE;

		goto out;

	}

	if ((task->task_proto == SAS_PROTOCOL_SMP)

	    || old_request->complete_in_target

	    ) {

	if (task->task_proto == SAS_PROTOCOL_SMP ||

	    test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) {



		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
@@ -1108,7 +1107,7 @@ int isci_task_abort_task(struct sas_task *task) 
			"%s: SMP request (%d)"

			" or complete_in_target (%d), thus no TMF\n",

			__func__, (task->task_proto == SAS_PROTOCOL_SMP),

			old_request->complete_in_target);

			test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags));



		/* Set the state on the task. */

		isci_task_all_done(task);
@@ -1136,7 +1135,7 @@ int isci_task_abort_task(struct sas_task *task) 
				__func__);

	}

	if (ret == TMF_RESP_FUNC_COMPLETE) {

		old_request->complete_in_target = true;

		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.
@@ -1252,7 +1251,7 @@ isci_task_request_complete(struct isci_host *ihost, 
	isci_request_change_state(ireq, completed);



	tmf->status = completion_status;

	ireq->complete_in_target = true;

	set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags);



	if (tmf->proto == SAS_PROTOCOL_SSP) {

		memcpy(&tmf->resp.resp_iu,
@@ -1271,7 +1270,7 @@ isci_task_request_complete(struct isci_host *ihost, 
	/* set the 'terminated' flag handle to make sure it cannot be terminated

	 *  or completed again.

	 */

	ireq->terminated = true;;

	set_bit(IREQ_TERMINATED, &ireq->flags);



	isci_request_change_state(ireq, unallocated);

	list_del_init(&ireq->dev_node);