/*
* The routine called by the low level scsi routine when it discovers
* a device suitable for this driver.
*/
void
sdattach(struct device *parent, struct device *self, void *aux)
{
struct sd_softc *sc = (struct sd_softc *)self;
struct scsi_attach_args *sa = aux;
struct disk_parms *dp = &sc->params;
struct scsi_link *sc_link = sa->sa_sc_link;
int sd_autoconf = scsi_autoconf | SCSI_SILENT |
SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE;
struct dk_cache dkc;
int error, result;
SC_DEBUG(sc_link, SDEV_DB2, ("sdattach:\n"));
/*
* Store information needed to contact our base driver
*/
sc->sc_link = sc_link;
sc_link->interpret_sense = sd_interpret_sense;
sc_link->device_softc = sc;
if ((sc_link->flags & SDEV_ATAPI) && (sc_link->flags & SDEV_REMOVABLE))
sc_link->quirks |= SDEV_NOSYNCCACHE;
if (!(sc_link->inqdata.flags & SID_RelAdr))
sc_link->quirks |= SDEV_ONLYBIG;
/*
* Note if this device is ancient. This is used in sdminphys().
*/
if (!(sc_link->flags & SDEV_ATAPI) &&
SCSISPC(sa->sa_inqbuf->version) == 0)
sc->flags |= SDF_ANCIENT;
/*
* Use the subdriver to request information regarding
* the drive. We cannot use interrupts yet, so the
* request must specify this.
*/
printf("\n");
scsi_xsh_set(&sc->sc_xsh, sc_link, sdstart);
timeout_set(&sc->sc_timeout, (void (*)(void *))scsi_xsh_add,
&sc->sc_xsh);
/* Spin up non-UMASS devices ready or not. */
if ((sc->sc_link->flags & SDEV_UMASS) == 0)
scsi_start(sc_link, SSS_START, sd_autoconf);
/*
* Some devices (e.g. Blackberry Pearl) won't admit they have
* media loaded unless its been locked in.
*/
if ((sc_link->flags & SDEV_REMOVABLE) != 0)
scsi_prevent(sc_link, PR_PREVENT, sd_autoconf);
/* Check that it is still responding and ok. */
error = scsi_test_unit_ready(sc->sc_link, TEST_READY_RETRIES * 3,
sd_autoconf);
if (error)
result = SDGP_RESULT_OFFLINE;
else
result = sd_get_parms(sc, &sc->params, sd_autoconf);
if ((sc_link->flags & SDEV_REMOVABLE) != 0)
scsi_prevent(sc_link, PR_ALLOW, sd_autoconf);
switch (result) {
case SDGP_RESULT_OK:
printf("%s: %lluMB, %lu bytes/sector, %llu sectors",
sc->sc_dev.dv_xname,
dp->disksize / (1048576 / dp->secsize), dp->secsize,
dp->disksize);
printf("\n");
break;
case SDGP_RESULT_OFFLINE:
break;
#ifdef DIAGNOSTIC
default:
panic("sdattach: unknown result (%#x) from get_parms", result);
break;
#endif
}
/*
* Initialize disk structures.
*/
sc->sc_dk.dk_name = sc->sc_dev.dv_xname;
bufq_init(&sc->sc_bufq, BUFQ_FIFO);
/*
* Enable write cache by default.
*/
memset(&dkc, 0, sizeof(dkc));
if (sd_ioctl_cache(sc, DIOCGCACHE, &dkc) == 0 && dkc.wrcache == 0) {
dkc.wrcache = 1;
sd_ioctl_cache(sc, DIOCSCACHE, &dkc);
}
/*
* Establish a shutdown hook so that we can ensure that
* our data has actually made it onto the platter at
* shutdown time. Note that this relies on the fact
* that the shutdown hook code puts us at the head of
* the list (thus guaranteeing that our hook runs before
* our ancestors').
*/
if ((sc->sc_sdhook =
shutdownhook_establish(sd_shutdown, sc)) == NULL)
printf("%s: WARNING: unable to establish shutdown hook\n",
sc->sc_dev.dv_xname);
/* Attach disk. */
disk_attach(&sc->sc_dev, &sc->sc_dk);
}
/*
* Open the device. Make sure the partition info is as up-to-date as can be.
*/
int
sdopen(dev_t dev, int flag, int fmt, struct proc *p)
{
struct scsi_link *sc_link;
struct sd_softc *sc;
int error = 0, part, rawopen, unit;
unit = DISKUNIT(dev);
part = DISKPART(dev);
rawopen = (part == RAW_PART) && (fmt == S_IFCHR);
sc = sdlookup(unit);
if (sc == NULL)
return (ENXIO);
sc_link = sc->sc_link;
if (sc->flags & SDF_DYING) {
device_unref(&sc->sc_dev);
return (ENXIO);
}
if (ISSET(flag, FWRITE) && ISSET(sc_link->flags, SDEV_READONLY)) {
device_unref(&sc->sc_dev);
return (EACCES);
}
SC_DEBUG(sc_link, SDEV_DB1,
("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit,
sd_cd.cd_ndevs, part));
if ((error = disk_lock(&sc->sc_dk)) != 0) {
device_unref(&sc->sc_dev);
return (error);
}
if (sc->sc_dk.dk_openmask != 0) {
/*
* If any partition is open, but the disk has been invalidated,
* disallow further opens of non-raw partition.
*/
if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
if (rawopen)
goto out;
error = EIO;
goto bad;
}
} else {
/* Spin up non-UMASS devices ready or not. */
if ((sc->sc_link->flags & SDEV_UMASS) == 0)
scsi_start(sc_link, SSS_START, (rawopen ? SCSI_SILENT :
0) | SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE);
/* Use sd_interpret_sense() for sense errors.
*
* But only after spinning the disk up! Just in case a broken
* device returns "Initialization command required." and causes
* a loop of scsi_start() calls.
*/
sc_link->flags |= SDEV_OPEN;
/*
* Try to prevent the unloading of a removable device while
* it's open. But allow the open to proceed if the device can't
* be locked in.
*/
if ((sc_link->flags & SDEV_REMOVABLE) != 0) {
scsi_prevent(sc_link, PR_PREVENT, SCSI_SILENT |
SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE);
}
/* Check that it is still responding and ok. */
error = scsi_test_unit_ready(sc_link,
TEST_READY_RETRIES, SCSI_SILENT |
SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE);
if (error) {
if (rawopen) {
error = 0;
goto out;
} else
goto bad;
}
/* Load the physical device parameters. */
sc_link->flags |= SDEV_MEDIA_LOADED;
if (sd_get_parms(sc, &sc->params, (rawopen ? SCSI_SILENT : 0))
== SDGP_RESULT_OFFLINE) {
sc_link->flags &= ~SDEV_MEDIA_LOADED;
error = ENXIO;
goto bad;
}
SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded\n"));
/* Load the partition info if not already loaded. */
if (sdgetdisklabel(dev, sc, sc->sc_dk.dk_label, 0) == EIO) {
error = EIO;
goto bad;
}
SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded\n"));
}
out:
if ((error = disk_openpart(&sc->sc_dk, part, fmt, 1)) != 0)
goto bad;
SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
/* It's OK to fall through because dk_openmask is now non-zero. */
bad:
if (sc->sc_dk.dk_openmask == 0) {
if ((sc->sc_link->flags & SDEV_REMOVABLE) != 0)
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT |
SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE);
sc_link->flags &= ~(SDEV_OPEN | SDEV_MEDIA_LOADED);
}
disk_unlock(&sc->sc_dk);
device_unref(&sc->sc_dev);
return (error);
}
/*
* Open device (read drive parameters and disklabel)
*/
int
sdopen(struct open_file *f, ...)
{
struct sd_softc *sd;
struct scsi_test_unit_ready cmd;
struct scsipi_inquiry_data *inqbuf;
u_int bus, target, lun, part;
int error;
char buf[SCSIPI_INQUIRY_LENGTH_SCSI2];
va_list ap;
va_start(ap, f);
bus = 0;
target = va_arg(ap, u_int);
lun = va_arg(ap, u_int);
part = va_arg(ap, u_int);
va_end(ap);
DPRINTF(("sdopen: sd(%d,%d,%d)\n", target, lun, part));
sd = alloc(sizeof(struct sd_softc));
if (sd == NULL)
return ENOMEM;
memset(sd, 0, sizeof(struct sd_softc));
sd->sc_part = part;
sd->sc_lun = lun;
sd->sc_target = target;
sd->sc_bus = bus;
if ((error = scsi_inquire(sd, sizeof(buf), buf)) != 0)
return error;
inqbuf = (struct scsipi_inquiry_data *)buf;
sd->sc_type = inqbuf->device & SID_TYPE;
/*
* Determine the operating mode capabilities of the device.
*/
if ((inqbuf->version & SID_ANSII) >= 2) {
// if ((inqbuf->flags3 & SID_CmdQue) != 0)
// sd->sc_cap |= PERIPH_CAP_TQING;
if ((inqbuf->flags3 & SID_Sync) != 0)
sd->sc_cap |= PERIPH_CAP_SYNC;
/* SPC-2 */
if ((inqbuf->version & SID_ANSII) >= 3) {
/*
* Report ST clocking though CAP_WIDExx/CAP_SYNC.
* If the device only supports DT, clear these
* flags (DT implies SYNC and WIDE)
*/
switch (inqbuf->flags4 & SID_Clocking) {
case SID_CLOCKING_DT_ONLY:
sd->sc_cap &= ~PERIPH_CAP_SYNC;
break;
}
}
}
sd->sc_flags =
(inqbuf->dev_qual2 & SID_REMOVABLE) ? FLAGS_REMOVABLE : 0;
memset(&cmd, 0, sizeof(cmd));
cmd.opcode = SCSI_TEST_UNIT_READY;
if ((error = scsi_command(sd, (void *)&cmd, sizeof(cmd), NULL, 0)) != 0)
return error;
if (sd->sc_flags & FLAGS_REMOVABLE) {
printf("XXXXX: removable device found. will not support\n");
}
if (!(sd->sc_flags & FLAGS_MEDIA_LOADED))
sd->sc_flags |= FLAGS_MEDIA_LOADED;
if ((error = sd_get_parms(sd)) != 0)
return error;
strncpy(sd->sc_label.d_typename, inqbuf->product, 16);
if ((error = sdgetdisklabel(sd)) != 0)
return error;
f->f_devdata = sd;
return 0;
}