hpsa: factor out hpsa_ioaccel_submit function
clean up command submission Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Webb Scales <webbnh@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
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@ -4375,6 +4375,33 @@ static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
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c->busaddr = (u32) cmd_dma_handle;
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}
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static int hpsa_ioaccel_submit(struct ctlr_info *h,
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struct CommandList *c, struct scsi_cmnd *cmd,
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unsigned char *scsi3addr)
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{
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struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
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int rc = IO_ACCEL_INELIGIBLE;
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cmd->host_scribble = (unsigned char *) c;
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if (dev->offload_enabled) {
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hpsa_cmd_init(h, c->cmdindex, c);
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c->cmd_type = CMD_SCSI;
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c->scsi_cmd = cmd;
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rc = hpsa_scsi_ioaccel_raid_map(h, c);
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if (rc < 0) /* scsi_dma_map failed. */
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rc = SCSI_MLQUEUE_HOST_BUSY;
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} else if (dev->ioaccel_handle) {
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hpsa_cmd_init(h, c->cmdindex, c);
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c->cmd_type = CMD_SCSI;
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c->scsi_cmd = cmd;
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rc = hpsa_scsi_ioaccel_direct_map(h, c);
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if (rc < 0) /* scsi_dma_map failed. */
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rc = SCSI_MLQUEUE_HOST_BUSY;
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}
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return rc;
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}
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static void hpsa_command_resubmit_worker(struct work_struct *work)
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{
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struct scsi_cmnd *cmd;
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@ -4386,15 +4413,46 @@ static void hpsa_command_resubmit_worker(struct work_struct *work)
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dev = cmd->device->hostdata;
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if (!dev) {
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cmd->result = DID_NO_CONNECT << 16;
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cmd_free(c->h, c);
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cmd->scsi_done(cmd);
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return;
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}
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if (c->cmd_type == CMD_IOACCEL2) {
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struct ctlr_info *h = c->h;
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struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
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int rc;
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if (c2->error_data.serv_response ==
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IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
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rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
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if (rc == 0)
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return;
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if (rc == SCSI_MLQUEUE_HOST_BUSY) {
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/*
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* If we get here, it means dma mapping failed.
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* Try again via scsi mid layer, which will
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* then get SCSI_MLQUEUE_HOST_BUSY.
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*/
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cmd->result = DID_IMM_RETRY << 16;
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cmd->scsi_done(cmd);
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cmd_free(h, c); /* FIX-ME: on merge, change
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* to cmd_tagged_free() and
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* ultimately to
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* hpsa_cmd_free_and_done(). */
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return;
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}
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/* else, fall thru and resubmit down CISS path */
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}
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}
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hpsa_cmd_partial_init(c->h, c->cmdindex, c);
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if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
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/*
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* If we get here, it means dma mapping failed. Try
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* again via scsi mid layer, which will then get
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* SCSI_MLQUEUE_HOST_BUSY.
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*
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* hpsa_ciss_submit will have already freed c
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* if it encountered a dma mapping failure.
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*/
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cmd->result = DID_IMM_RETRY << 16;
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cmd->scsi_done(cmd);
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@ -4444,31 +4502,14 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
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if (likely(cmd->retries == 0 &&
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cmd->request->cmd_type == REQ_TYPE_FS &&
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h->acciopath_status)) {
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cmd->host_scribble = (unsigned char *) c;
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if (dev->offload_enabled) {
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hpsa_cmd_init(h, c->cmdindex, c);
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c->cmd_type = CMD_SCSI;
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c->scsi_cmd = cmd;
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rc = hpsa_scsi_ioaccel_raid_map(h, c);
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if (rc == 0)
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return 0; /* Sent on ioaccel path */
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if (rc < 0) { /* scsi_dma_map failed. */
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cmd_free(h, c);
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return SCSI_MLQUEUE_HOST_BUSY;
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}
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} else if (dev->ioaccel_handle) {
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hpsa_cmd_init(h, c->cmdindex, c);
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c->cmd_type = CMD_SCSI;
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c->scsi_cmd = cmd;
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rc = hpsa_scsi_ioaccel_direct_map(h, c);
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if (rc == 0)
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return 0; /* Sent on direct map path */
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if (rc < 0) { /* scsi_dma_map failed. */
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cmd_free(h, c);
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return SCSI_MLQUEUE_HOST_BUSY;
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}
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rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
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if (rc == 0)
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return 0;
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if (rc == SCSI_MLQUEUE_HOST_BUSY) {
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cmd_free(h, c); /* FIX-ME: on merge, change to
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* cmd_tagged_free(), and ultimately
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* to hpsa_cmd_resolve_and_free(). */
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return SCSI_MLQUEUE_HOST_BUSY;
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}
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}
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return hpsa_ciss_submit(h, c, cmd, scsi3addr);
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