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scsi: hisi_sas: add v2 hw slot complete internal abort support 

Add code in slot_complete_v2_hw() to deal with the slots which have
completed due to internal abort.

The status codes have the following meaning:

- STAT_IO_ABORTED: the IO has been aborted due to internal abort,
  whether by device or individual abort command

- STAT_IO_COMPLETE: internal abort command has completed successfully
  for device or individual abort command

- STAT_IO_NO_DEVICE: internal abort command has completed for device but
  cannot find any IO

- STAT_IO_NOT_VALID: internal abort command has completed for single
  command but could not find the command

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2016-08-24 19:05:51 +08:00 committed by Martin K. Petersen
parent a3e665d91f
commit df032d0e4d
1 changed files with 31 additions and 0 deletions
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31
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
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@ -227,6 +227,13 @@
#define CMPLT_HDR_RSPNS_XFRD_MSK (0x1 << CMPLT_HDR_RSPNS_XFRD_OFF)
#define CMPLT_HDR_ERX_OFF 12
#define CMPLT_HDR_ERX_MSK (0x1 << CMPLT_HDR_ERX_OFF)
#define CMPLT_HDR_ABORT_STAT_OFF 13
#define CMPLT_HDR_ABORT_STAT_MSK (0x7 << CMPLT_HDR_ABORT_STAT_OFF)
/* abort_stat */
#define STAT_IO_NOT_VALID 0x1
#define STAT_IO_NO_DEVICE 0x2
#define STAT_IO_COMPLETE 0x3
#define STAT_IO_ABORTED 0x4
/* dw1 */
#define CMPLT_HDR_IPTT_OFF 0
#define CMPLT_HDR_IPTT_MSK (0xffff << CMPLT_HDR_IPTT_OFF)
@ -1569,6 +1576,30 @@ slot_complete_v2_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot,
goto out;
}
/* Use SAS+TMF status codes */
switch ((complete_hdr->dw0 & CMPLT_HDR_ABORT_STAT_MSK)
>> CMPLT_HDR_ABORT_STAT_OFF) {
case STAT_IO_ABORTED:
/* this io has been aborted by abort command */
ts->stat = SAS_ABORTED_TASK;
goto out;
case STAT_IO_COMPLETE:
/* internal abort command complete */
ts->stat = TMF_RESP_FUNC_COMPLETE;
goto out;
case STAT_IO_NO_DEVICE:
ts->stat = TMF_RESP_FUNC_COMPLETE;
goto out;
case STAT_IO_NOT_VALID:
/* abort single io, controller don't find
* the io need to abort
*/
ts->stat = TMF_RESP_FUNC_FAILED;
goto out;
default:
break;
}
if ((complete_hdr->dw0 & CMPLT_HDR_ERX_MSK) &&
(!(complete_hdr->dw0 & CMPLT_HDR_RSPNS_XFRD_MSK))) {