scsi: smartpqi: refactor sending controller raid requests

Clean up the common code which creates a raid path request for the
controller LUNID and sends it synchronously, into a common routine;

Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com>
Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 07206d5..2a90d51 100644 (file)
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -519,44 +519,58 @@ static void pqi_free_io_request(struct pqi_io_request *io_request)
        atomic_dec(&io_request->refcount);
 }
 
-static int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
-       struct bmic_identify_controller *buffer)
+static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
+               u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
+               struct pqi_raid_error_info *error_info,
+               unsigned long timeout_msecs)
 {
        int rc;
        enum dma_data_direction dir;
        struct pqi_raid_path_request request;
 
        rc = pqi_build_raid_path_request(ctrl_info, &request,
-               BMIC_IDENTIFY_CONTROLLER, RAID_CTLR_LUNID, buffer,
-               sizeof(*buffer), 0, &dir);
+               cmd, scsi3addr, buffer,
+               buffer_length, vpd_page, &dir);
        if (rc)
                return rc;
 
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
-               NULL, NO_TIMEOUT);
+       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
+                0, error_info, timeout_msecs);
 
        pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
        return rc;
 }
 
-static int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
-       u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
+/* Helper functions for pqi_send_scsi_raid_request */
+
+static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
+               u8 cmd, void *buffer, size_t buffer_length)
 {
-       int rc;
-       enum dma_data_direction dir;
-       struct pqi_raid_path_request request;
+       return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
+                       buffer, buffer_length, 0, NULL, NO_TIMEOUT);
+}
 
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               INQUIRY, scsi3addr, buffer, buffer_length, vpd_page,
-               &dir);
-       if (rc)
-               return rc;
+static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
+               u8 cmd, void *buffer, size_t buffer_length,
+               struct pqi_raid_error_info *error_info)
+{
+       return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
+                       buffer, buffer_length, 0, error_info, NO_TIMEOUT);
+}
 
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
-               NULL, NO_TIMEOUT);
 
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
-       return rc;
+static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
+               struct bmic_identify_controller *buffer)
+{
+       return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
+                       buffer, sizeof(*buffer));
+}
+
+static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
+       u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
+{
+       return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
+               buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
 }
 
 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
@@ -590,9 +604,7 @@ static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
        enum bmic_flush_cache_shutdown_event shutdown_event)
 {
        int rc;
-       struct pqi_raid_path_request request;
        struct bmic_flush_cache *flush_cache;
-       enum dma_data_direction dir;
 
        /*
         * Don't bother trying to flush the cache if the controller is
@@ -607,17 +619,9 @@ static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
 
        flush_cache->shutdown_event = shutdown_event;
 
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               SA_FLUSH_CACHE, RAID_CTLR_LUNID, flush_cache,
-               sizeof(*flush_cache), 0, &dir);
-       if (rc)
-               goto out;
+       rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
+               sizeof(*flush_cache));
 
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
-               0, NULL, NO_TIMEOUT);
-
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
-out:
        kfree(flush_cache);
 
        return rc;
@@ -629,66 +633,32 @@ out:
 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
 {
        int rc;
-       struct pqi_raid_path_request request;
        struct bmic_diag_options *diag;
-       enum dma_data_direction pci_direction;
 
        diag = kzalloc(sizeof(*diag), GFP_KERNEL);
        if (!diag)
                return -ENOMEM;
 
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               BMIC_SENSE_DIAG_OPTIONS, RAID_CTLR_LUNID, diag,
-               sizeof(*diag), 0, &pci_direction);
-       if (rc)
-               goto out;
-
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
-               0, NULL, NO_TIMEOUT);
-
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
-               pci_direction);
-
+       rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
+                                       diag, sizeof(*diag));
        if (rc)
                goto out;
 
        diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
 
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               BMIC_SET_DIAG_OPTIONS, RAID_CTLR_LUNID, diag,
-               sizeof(*diag), 0, &pci_direction);
-       if (rc)
-               goto out;
-
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
-               0, NULL, NO_TIMEOUT);
-
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
-               pci_direction);
+       rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS,
+                                       diag, sizeof(*diag));
 out:
        kfree(diag);
 
        return rc;
 }
 
-static int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
+static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
        void *buffer, size_t buffer_length)
 {
-       int rc;
-       struct pqi_raid_path_request request;
-       enum dma_data_direction dir;
-
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               BMIC_WRITE_HOST_WELLNESS, RAID_CTLR_LUNID, buffer,
-               buffer_length, 0, &dir);
-       if (rc)
-               return rc;
-
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
-               0, NULL, NO_TIMEOUT);
-
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
-       return rc;
+       return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
+                                       buffer, buffer_length);
 }
 
 #pragma pack(1)
@@ -837,23 +807,11 @@ static inline void pqi_cancel_update_time_worker(
        cancel_delayed_work_sync(&ctrl_info->update_time_work);
 }
 
-static int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
+static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
        void *buffer, size_t buffer_length)
 {
-       int rc;
-       enum dma_data_direction dir;
-       struct pqi_raid_path_request request;
-
-       rc = pqi_build_raid_path_request(ctrl_info, &request,
-               cmd, RAID_CTLR_LUNID, buffer, buffer_length, 0, &dir);
-       if (rc)
-               return rc;
-
-       rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
-               NULL, NO_TIMEOUT);
-
-       pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
-       return rc;
+       return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
+                                       buffer_length);
 }
 
 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,