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[SCSI] hpsa: improve error messages for driver initiated commands

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On encountering unexpected error conditions from driver initiated
commands, print something useful like CDB and sense data rather than
something useless like the kernel virtual address of the command buffer.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Stephen M. Cameron 2014-02-18 13:57:47 -06:00 committed by James Bottomley
parent faff6ee053
commit d1e8beac49
1 changed files with 45 additions and 28 deletions
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73
drivers/scsi/hpsa.c
View File

@ -1847,17 +1847,37 @@ static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
hpsa_pci_unmap(h->pdev, c, 1, data_direction);
}
static void hpsa_scsi_interpret_error(struct CommandList *cp)
static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
struct CommandList *c)
{
struct ErrorInfo *ei;
struct device *d = &cp->h->pdev->dev;
const u8 *cdb = c->Request.CDB;
const u8 *lun = c->Header.LUN.LunAddrBytes;
dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
" CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
txt, lun[0], lun[1], lun[2], lun[3],
lun[4], lun[5], lun[6], lun[7],
cdb[0], cdb[1], cdb[2], cdb[3],
cdb[4], cdb[5], cdb[6], cdb[7],
cdb[8], cdb[9], cdb[10], cdb[11],
cdb[12], cdb[13], cdb[14], cdb[15]);
}
static void hpsa_scsi_interpret_error(struct ctlr_info *h,
struct CommandList *cp)
{
const struct ErrorInfo *ei = cp->err_info;
struct device *d = &cp->h->pdev->dev;
const u8 *sd = ei->SenseInfo;
ei = cp->err_info;
switch (ei->CommandStatus) {
case CMD_TARGET_STATUS:
dev_warn(d, "cmd %p has completed with errors\n", cp);
dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
ei->ScsiStatus);
hpsa_print_cmd(h, "SCSI status", cp);
if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
dev_warn(d, "SCSI Status = 02, Sense key = %02x, ASC = %02x, ASCQ = %02x\n",
sd[2] & 0x0f, sd[12], sd[13]);
else
dev_warn(d, "SCSI Status = %02x\n", ei->ScsiStatus);
if (ei->ScsiStatus == 0)
dev_warn(d, "SCSI status is abnormally zero. "
"(probably indicates selection timeout "
@ -1865,48 +1885,45 @@ static void hpsa_scsi_interpret_error(struct CommandList *cp)
"firmware bug, circa July, 2001.)\n");
break;
case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
dev_info(d, "UNDERRUN\n");
break;
case CMD_DATA_OVERRUN:
dev_warn(d, "cp %p has completed with data overrun\n", cp);
hpsa_print_cmd(h, "overrun condition", cp);
break;
case CMD_INVALID: {
/* controller unfortunately reports SCSI passthru's
* to non-existent targets as invalid commands.
*/
dev_warn(d, "cp %p is reported invalid (probably means "
"target device no longer present)\n", cp);
/* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
print_cmd(cp); */
hpsa_print_cmd(h, "invalid command", cp);
dev_warn(d, "probably means device no longer present\n");
}
break;
case CMD_PROTOCOL_ERR:
dev_warn(d, "cp %p has protocol error \n", cp);
hpsa_print_cmd(h, "protocol error", cp);
break;
case CMD_HARDWARE_ERR:
/* cmd->result = DID_ERROR << 16; */
dev_warn(d, "cp %p had hardware error\n", cp);
hpsa_print_cmd(h, "hardware error", cp);
break;
case CMD_CONNECTION_LOST:
dev_warn(d, "cp %p had connection lost\n", cp);
hpsa_print_cmd(h, "connection lost", cp);
break;
case CMD_ABORTED:
dev_warn(d, "cp %p was aborted\n", cp);
hpsa_print_cmd(h, "aborted", cp);
break;
case CMD_ABORT_FAILED:
dev_warn(d, "cp %p reports abort failed\n", cp);
hpsa_print_cmd(h, "abort failed", cp);
break;
case CMD_UNSOLICITED_ABORT:
dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
hpsa_print_cmd(h, "unsolicited abort", cp);
break;
case CMD_TIMEOUT:
dev_warn(d, "cp %p timed out\n", cp);
hpsa_print_cmd(h, "timed out", cp);
break;
case CMD_UNABORTABLE:
dev_warn(d, "Command unabortable\n");
hpsa_print_cmd(h, "unabortable", cp);
break;
default:
dev_warn(d, "cp %p returned unknown status %x\n", cp,
hpsa_print_cmd(h, "unknown status", cp);
dev_warn(d, "Unknown command status %x\n",
ei->CommandStatus);
}
}
@ -1934,7 +1951,7 @@ static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
ei = c->err_info;
if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
hpsa_scsi_interpret_error(c);
hpsa_scsi_interpret_error(h, c);
rc = -1;
}
out:
@ -1965,7 +1982,7 @@ static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
ei = c->err_info;
if (ei->CommandStatus != 0) {
hpsa_scsi_interpret_error(c);
hpsa_scsi_interpret_error(h, c);
rc = -1;
}
cmd_special_free(h, c);
@ -2089,7 +2106,7 @@ static int hpsa_get_raid_map(struct ctlr_info *h,
hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
ei = c->err_info;
if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
hpsa_scsi_interpret_error(c);
hpsa_scsi_interpret_error(h, c);
cmd_special_free(h, c);
return -1;
}
@ -2231,7 +2248,7 @@ static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
ei = c->err_info;
if (ei->CommandStatus != 0 &&
ei->CommandStatus != CMD_DATA_UNDERRUN) {
hpsa_scsi_interpret_error(c);
hpsa_scsi_interpret_error(h, c);
rc = -1;
} else {
if (buf->extended_response_flag != extended_response) {
@ -3975,7 +3992,7 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
default:
dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
__func__, tagupper, taglower);
hpsa_scsi_interpret_error(c);
hpsa_scsi_interpret_error(h, c);
rc = -1;
break;
}