isci: Using Linux SSP frame header

Removing of struct sci_ssp_frame_header and migrate to struct ssp_frame_hdr.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/scsi/isci/core/intel_sas.h

@@ -133,45 +133,6 @@ enum sci_sas_frame_type {
 	SCI_SAS_TASK_FRAME = 0x16
 };
 
-/**
- * struct sci_ssp_frame_header - This structure depicts the contents of an SSP
- *    frame header.  For specific information on the individual fields please
- *    reference the SAS specification transport layer SSP frame format.
- *
- *
- */
-struct sci_ssp_frame_header {
-	/* Word 0 */
-	u32 hashed_destination_address:24;
-	u32 frame_type:8;
-
-	/* Word 1 */
-	u32 hashed_source_address:24;
-	u32 reserved1_0:8;
-
-	/* Word 2 */
-	u32 reserved2_2:6;
-	u32 fill_bytes:2;
-	u32 reserved2_1:3;
-	u32 tlr_control:2;
-	u32 retry_data_frames:1;
-	u32 retransmit:1;
-	u32 changing_data_pointer:1;
-	u32 reserved2_0:16;
-
-	/* Word 3 */
-	u32 uiResv4;
-
-	/* Word 4 */
-	u16 target_port_transfer_tag;
-	u16 tag;
-
-	/* Word 5 */
-	u32 data_offset;
-
-};
-
-
 #define PHY_OPERATION_NOP               0x00
 #define PHY_OPERATION_LINK_RESET        0x01
 #define PHY_OPERATION_HARD_RESET        0x02

drivers/scsi/isci/core/scic_sds_controller.c

@@ -1619,25 +1619,9 @@ struct scu_task_context *scic_sds_controller_get_task_context_buffer(
 	return NULL;
 }
 
-/**
- * This method returnst the sequence value from the io tag value
- * @scic:
- * @io_tag:
- *
- * u16
- */
-
-/**
- * This method returns the IO request associated with the tag value
- * @scic:
- * @io_tag:
- *
- * SCIC_SDS_IO_REQUEST_T* NULL if there is no valid IO request at the tag value
- */
-struct scic_sds_request *scic_sds_controller_get_io_request_from_tag(
-	struct scic_sds_controller *scic,
-	u16 io_tag
-	) {
+struct scic_sds_request *scic_request_by_tag(struct scic_sds_controller *scic,
+					     u16 io_tag)
+{
 	u16 task_index;
 	u16 task_sequence;
 

drivers/scsi/isci/core/scic_sds_controller.h

@@ -556,11 +556,9 @@ union scu_remote_node_context *scic_sds_controller_get_remote_node_context_buffe
 	struct scic_sds_controller *this_controller,
 	u16 node_id);
 
-struct scic_sds_request *scic_sds_controller_get_io_request_from_tag(
-	struct scic_sds_controller *this_controller,
+struct scic_sds_request *scic_request_by_tag(struct scic_sds_controller *scic,
 					     u16 io_tag);
 
-
 struct scu_task_context *scic_sds_controller_get_task_context_buffer(
 	struct scic_sds_controller *this_controller,
 	u16 io_tag);

drivers/scsi/isci/core/scic_sds_request.c

@@ -1265,14 +1265,19 @@ scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
 					     u32 frame_index)
 {
 	enum sci_status status;
-	struct sci_ssp_frame_header *frame_header;
+	u32 *frame_header;
+	struct ssp_frame_hdr ssp_hdr;
+	ssize_t word_cnt;
 
 	status = scic_sds_unsolicited_frame_control_get_header(
 		&(scic_sds_request_get_controller(sci_req)->uf_control),
 		frame_index,
 		(void **)&frame_header);
 
-	if (frame_header->frame_type == SCI_SAS_RESPONSE_FRAME) {
+	word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
+	sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+
+	if (ssp_hdr.frame_type == SSP_RESPONSE) {
 		struct ssp_response_iu *resp_iu;
 		ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
 
@@ -1303,7 +1308,7 @@ scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
 			__func__,
 			sci_req,
 			frame_index,
-			frame_header->frame_type);
+			ssp_hdr.frame_type);
 	}
 
 	/*

drivers/scsi/isci/remote_device.c

@@ -52,6 +52,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+#include <scsi/sas.h>
 #include "intel_sas.h"
 #include "sas.h"
 #include "isci.h"
@@ -305,15 +306,20 @@ enum sci_status scic_sds_remote_device_frame_handler(struct scic_sds_remote_devi
 	case SCI_BASE_REMOTE_DEVICE_STATE_FAILED:
 	case SCI_BASE_REMOTE_DEVICE_STATE_RESETTING: {
 		struct scic_sds_request *sci_req;
-		struct sci_ssp_frame_header *hdr;
+		struct ssp_frame_hdr hdr;
+		void *frame_header;
+		ssize_t word_cnt;
 
 		status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
 								       frame_index,
-								       (void **)&hdr);
+								       &frame_header);
 		if (status != SCI_SUCCESS)
 			return status;
 
-		sci_req = scic_sds_controller_get_io_request_from_tag(scic, hdr->tag);
+		word_cnt = sizeof(hdr) / sizeof(u32);
+		sci_swab32_cpy(&hdr, frame_header, word_cnt);
+
+		sci_req = scic_request_by_tag(scic, be16_to_cpu(hdr.tag));
 		if (sci_req && sci_req->target_device == sci_dev) {
 			/* The IO request is now in charge of releasing the frame */
 			status = sci_req->state_handlers->frame_handler(sci_req,