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scsi: Add mapping for generic SCSI_HOST status to sense codes

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As we don't have a driver-specific mapping (yet) we should provide
for a detailed mapping from host_status to SCSI sense codes.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Message-Id: <20201116184041.60465-6-hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Hannes Reinecke 2020-11-16 19:40:39 +01:00 committed by Paolo Bonzini
parent 41af878b96
commit db66a15cb8
2 changed files with 59 additions and 7 deletions
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1
include/scsi/utils.h
View File

@ -145,5 +145,6 @@ int sg_io_sense_from_errno(int errno_value, struct sg_io_hdr *io_hdr,
#endif
int scsi_sense_from_errno(int errno_value, SCSISense *sense);
int scsi_sense_from_host_status(uint8_t host_status, SCSISense *sense);
#endif

65
scsi/utils.c
View File

@ -257,6 +257,21 @@ const struct SCSISense sense_code_LUN_COMM_FAILURE = {
.key = ABORTED_COMMAND, .asc = 0x08, .ascq = 0x00
};
/* Command aborted, LUN does not respond to selection */
const struct SCSISense sense_code_LUN_NOT_RESPONDING = {
.key = ABORTED_COMMAND, .asc = 0x05, .ascq = 0x00
};
/* Command aborted, Command Timeout during processing */
const struct SCSISense sense_code_COMMAND_TIMEOUT = {
.key = ABORTED_COMMAND, .asc = 0x2e, .ascq = 0x02
};
/* Command aborted, Commands cleared by device server */
const struct SCSISense sense_code_COMMAND_ABORTED = {
.key = ABORTED_COMMAND, .asc = 0x2f, .ascq = 0x02
};
/* Medium Error, Unrecovered read error */
const struct SCSISense sense_code_READ_ERROR = {
.key = MEDIUM_ERROR, .asc = 0x11, .ascq = 0x00
@ -605,6 +620,45 @@ int scsi_sense_from_errno(int errno_value, SCSISense *sense)
}
}
int scsi_sense_from_host_status(uint8_t host_status,
SCSISense *sense)
{
switch (host_status) {
case SCSI_HOST_NO_LUN:
*sense = SENSE_CODE(LUN_NOT_RESPONDING);
return CHECK_CONDITION;
case SCSI_HOST_BUSY:
return BUSY;
case SCSI_HOST_TIME_OUT:
*sense = SENSE_CODE(COMMAND_TIMEOUT);
return CHECK_CONDITION;
case SCSI_HOST_BAD_RESPONSE:
*sense = SENSE_CODE(LUN_COMM_FAILURE);
return CHECK_CONDITION;
case SCSI_HOST_ABORTED:
*sense = SENSE_CODE(COMMAND_ABORTED);
return CHECK_CONDITION;
case SCSI_HOST_RESET:
*sense = SENSE_CODE(RESET);
return CHECK_CONDITION;
case SCSI_HOST_TRANSPORT_DISRUPTED:
*sense = SENSE_CODE(I_T_NEXUS_LOSS);
return CHECK_CONDITION;
case SCSI_HOST_TARGET_FAILURE:
*sense = SENSE_CODE(TARGET_FAILURE);
return CHECK_CONDITION;
case SCSI_HOST_RESERVATION_ERROR:
return RESERVATION_CONFLICT;
case SCSI_HOST_ALLOCATION_FAILURE:
*sense = SENSE_CODE(SPACE_ALLOC_FAILED);
return CHECK_CONDITION;
case SCSI_HOST_MEDIUM_ERROR:
*sense = SENSE_CODE(READ_ERROR);
return CHECK_CONDITION;
}
return GOOD;
}
#ifdef CONFIG_LINUX
int sg_io_sense_from_errno(int errno_value, struct sg_io_hdr *io_hdr,
SCSISense *sense)
@ -612,14 +666,11 @@ int sg_io_sense_from_errno(int errno_value, struct sg_io_hdr *io_hdr,
if (errno_value != 0) {
return scsi_sense_from_errno(errno_value, sense);
} else {
if (io_hdr->host_status == SCSI_HOST_NO_LUN ||
io_hdr->host_status == SCSI_HOST_BUSY ||
io_hdr->host_status == SCSI_HOST_TIME_OUT ||
(io_hdr->driver_status & SG_ERR_DRIVER_TIMEOUT)) {
int status = scsi_sense_from_host_status(io_hdr->host_status, sense);
if (status) {
return status;
} else if (io_hdr->driver_status & SG_ERR_DRIVER_TIMEOUT) {
return BUSY;
} else if (io_hdr->host_status) {
*sense = SENSE_CODE(I_T_NEXUS_LOSS);
return CHECK_CONDITION;
} else if (io_hdr->status) {
return io_hdr->status;
} else if (io_hdr->driver_status & SG_ERR_DRIVER_SENSE) {