static int
ch_interpret_sense(struct scsipi_xfer *xs)
{
struct scsipi_periph *periph = xs->xs_periph;
struct scsi_sense_data *sense = &xs->sense.scsi_sense;
struct ch_softc *sc = device_private(periph->periph_dev);
u_int16_t asc_ascq;
/*
* If the periph is already recovering, just do the
* normal error recovering.
*/
if (periph->periph_flags & PERIPH_RECOVERING)
return (EJUSTRETURN);
/*
* If it isn't an extended or extended/deferred error, let
* the generic code handle it.
*/
if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
return (EJUSTRETURN);
/*
* We're only interested in condtions that
* indicate potential inventory violation.
*
* We use ASC/ASCQ codes for this.
*/
asc_ascq = (((u_int16_t) sense->asc) << 8) |
sense->ascq;
switch (asc_ascq) {
case 0x2800:
/* "Not Ready To Ready Transition (Medium May Have Changed)" */
case 0x2900:
/* "Power On, Reset, or Bus Device Reset Occurred" */
sc->sc_periph->periph_flags &= ~PERIPH_MEDIA_LOADED;
/*
* Enqueue an Element-Status-Changed event, and wake up
* any processes waiting for them.
*/
if ((xs->xs_control & XS_CTL_IGNORE_MEDIA_CHANGE) == 0)
ch_event(sc, CHEV_ELEMENT_STATUS_CHANGED);
break;
default:
break;
}
return (EJUSTRETURN);
}
/*
* scsi_interpret_sense:
*
* Look at the returned sense and act on the error, determining
* the unix error number to pass back. (0 = report no error)
*
* NOTE: If we return ERESTART, we are expected to haved
* thawed the device!
*
* THIS IS THE DEFAULT ERROR HANDLER FOR SCSI DEVICES.
*/
static int
scsi_interpret_sense(struct siop_adapter *adp, struct scsi_xfer *xs)
{
struct scsi_sense_data *sense;
u_int8_t key;
int error;
uint32_t info;
static const char *error_mes[] = {
"soft error (corrected)",
"not ready", "medium error",
"non-media hardware failure", "illegal request",
"unit attention", "readonly device",
"no data found", "vendor unique",
"copy aborted", "command aborted",
"search returned equal", "volume overflow",
"verify miscompare", "unknown error key"
};
sense = (struct scsi_sense_data *)xs->data;
DPRINTF((" sense debug information:\n"));
DPRINTF(("\tcode 0x%x valid %d\n",
SSD_RCODE(sense->response_code),
sense->response_code & SSD_RCODE_VALID ? 1 : 0));
DPRINTF(("\tseg 0x%x key 0x%x ili 0x%x eom 0x%x fmark 0x%x\n",
sense->segment,
SSD_SENSE_KEY(sense->flags),
sense->flags & SSD_ILI ? 1 : 0,
sense->flags & SSD_EOM ? 1 : 0,
sense->flags & SSD_FILEMARK ? 1 : 0));
DPRINTF(("\ninfo: 0x%x 0x%x 0x%x 0x%x followed by %d "
"extra bytes\n",
sense->info[0],
sense->info[1],
sense->info[2],
sense->info[3],
sense->extra_len));
switch (SSD_RCODE(sense->response_code)) {
/*
* Old SCSI-1 and SASI devices respond with
* codes other than 70.
*/
case 0x00: /* no error (command completed OK) */
return 0;
case 0x04: /* drive not ready after it was selected */
if (adp->sd->sc_flags & FLAGS_REMOVABLE)
adp->sd->sc_flags &= ~FLAGS_MEDIA_LOADED;
/* XXX - display some sort of error here? */
return EIO;
case 0x20: /* invalid command */
return EINVAL;
case 0x25: /* invalid LUN (Adaptec ACB-4000) */
return EACCES;
/*
* If it's code 70, use the extended stuff and
* interpret the key
*/
case 0x71: /* delayed error */
key = SSD_SENSE_KEY(sense->flags);
printf(" DEFERRED ERROR, key = 0x%x\n", key);
/* FALLTHROUGH */
case 0x70:
if ((sense->response_code & SSD_RCODE_VALID) != 0)
info = _4btol(sense->info);
else
info = 0;
key = SSD_SENSE_KEY(sense->flags);
switch (key) {
case SKEY_NO_SENSE:
case SKEY_RECOVERED_ERROR:
if (xs->resid == xs->datalen && xs->datalen) {
/*
* Why is this here?
*/
xs->resid = 0; /* not short read */
}
case SKEY_EQUAL:
error = 0;
break;
case SKEY_NOT_READY:
if (adp->sd->sc_flags & FLAGS_REMOVABLE)
adp->sd->sc_flags &= ~FLAGS_MEDIA_LOADED;
if (sense->asc == 0x3A) {
error = ENODEV; /* Medium not present */
} else
error = EIO;
break;
case SKEY_ILLEGAL_REQUEST:
error = EINVAL;
break;
case SKEY_UNIT_ATTENTION:
if (sense->asc == 0x29 &&
sense->ascq == 0x00) {
/* device or bus reset */
return ERESTART;
}
if (adp->sd->sc_flags & FLAGS_REMOVABLE)
adp->sd->sc_flags &= ~FLAGS_MEDIA_LOADED;
if (!(adp->sd->sc_flags & FLAGS_REMOVABLE))
return ERESTART;
error = EIO;
break;
case SKEY_DATA_PROTECT:
error = EROFS;
break;
case SKEY_BLANK_CHECK:
error = 0;
break;
case SKEY_ABORTED_COMMAND:
break;
case SKEY_VOLUME_OVERFLOW:
error = ENOSPC;
break;
default:
error = EIO;
break;
}
/* Print brief(er) sense information */
printf("%s", error_mes[key - 1]);
if ((sense->response_code & SSD_RCODE_VALID) != 0) {
switch (key) {
case SKEY_NOT_READY:
case SKEY_ILLEGAL_REQUEST:
case SKEY_UNIT_ATTENTION:
case SKEY_DATA_PROTECT:
break;
case SKEY_BLANK_CHECK:
printf(", requested size: %d (decimal)",
info);
break;
case SKEY_ABORTED_COMMAND:
printf(", cmd 0x%x, info 0x%x",
xs->cmd->opcode, info);
break;
default:
printf(", info = %d (decimal)", info);
}
}
if (sense->extra_len != 0) {
int n;
printf(", data =");
for (n = 0; n < sense->extra_len; n++)
printf(" %x", sense->csi[n]);
}
printf("\n");
return error;
/*
* Some other code, just report it
*/
default:
printf("Sense Error Code 0x%x",
SSD_RCODE(sense->response_code));
if ((sense->response_code & SSD_RCODE_VALID) != 0) {
struct scsi_sense_data_unextended *usense =
(struct scsi_sense_data_unextended *)sense;
printf(" at block no. %d (decimal)",
_3btol(usense->block));
}
printf("\n");
return EIO;
}
}
