int
sdgetinfo(struct sd_softc *ss)
{
struct scsipi_read_capacity_10 cdb;
struct scsipi_read_capacity_10_data cap;
struct sdminilabel *pi = &ss->sc_pinfo;
struct next68k_disklabel *label;
int error, i, blklen;
char io_buf[NEXT68K_LABEL_SIZE+NEXT68K_LABEL_OFFSET];
int count;
int sc_blkshift = 0;
memset(&cdb, 0, sizeof(cdb));
cdb.opcode = READ_CAPACITY_10;
count = sizeof(cap);
error = scsiicmd(ss->sc_unit, ss->sc_lun, (u_char *)&cdb, sizeof(cdb),
(char *)&cap, &count);
if (error != 0)
return error<0 ? EHER : error;
blklen = (cap.length[0]<<24) + (cap.length[1]<<16)
+ (cap.length[2]<<8) + cap.length[3];
ss->sc_dev_bsize = blklen;
ss->sc_pinfo.offset[ss->sc_part] = 0; /* read absolute sector */
error = sdstrategy(ss, F_READ, NEXT68K_LABEL_SECTOR,
NEXT68K_LABEL_SIZE+NEXT68K_LABEL_OFFSET, io_buf, (unsigned int *)&i);
if (error != 0) {
DPRINTF(("sdgetinfo: sdstrategy error %d\n", error));
return(ERDLAB);
}
label = (struct next68k_disklabel *)(io_buf+NEXT68K_LABEL_OFFSET);
if (!IS_DISKLABEL(label)) /* || (label->cd_flags & CD_UNINIT)!=0) */
return EUNLAB; /* bad magic */
/* XXX calculate checksum ... for now we rely on the magic number */
DPRINTF(("Disk is %s (%s, %s).\n",
label->cd_label,label->cd_name, label->cd_type));
while (label->cd_secsize > blklen)
{
blklen <<= 1;
++sc_blkshift;
}
if (label->cd_secsize < blklen)
{
printf("bad label sectorsize (%d) or device blocksize (%d).\n",
label->cd_secsize, blklen>>sc_blkshift);
return ENXIO;
}
/*
* Load the label information on the named device.
*/
static int
sdgetdisklabel(struct sd_softc *sd)
{
struct mbr_sector *mbr;
struct mbr_partition *mp;
struct disklabel *lp = &sd->sc_label;
size_t rsize;
int sector, i;
char *msg;
uint8_t buf[DEV_BSIZE];
sdgetdefaultlabel(sd, lp);
if (lp->d_secpercyl == 0) {
lp->d_secpercyl = 100;
/* as long as it's not 0 - readdisklabel divides by it (?) */
}
/*
* Find NetBSD Partition in DOS partition table.
*/
sector = 0;
if (sdstrategy(sd, F_READ, MBR_BBSECTOR, DEV_BSIZE, buf, &rsize))
return EOFFSET;
mbr = (struct mbr_sector *)buf;
if (mbr->mbr_magic == htole16(MBR_MAGIC)) {
/*
* Lookup NetBSD slice. If there is none, go ahead
* and try to read the disklabel off sector #0.
*/
mp = mbr->mbr_parts;
for (i = 0; i < MBR_PART_COUNT; i++) {
if (mp[i].mbrp_type == MBR_PTYPE_NETBSD) {
sector = le32toh(mp[i].mbrp_start);
break;
}
}
}
if (sdstrategy(sd, F_READ, sector + LABELSECTOR, DEV_BSIZE,
buf, &rsize))
return EOFFSET;
msg = getdisklabel((const char *)buf + LABELOFFSET, &sd->sc_label);
if (msg)
printf("sd(%d,%d,%d,...): getdisklabel: %s\n",
sd->sc_bus, sd->sc_target, sd->sc_lun, msg);
/* check partition */
if ((sd->sc_part >= lp->d_npartitions) ||
(lp->d_partitions[sd->sc_part].p_fstype == FS_UNUSED)) {
DPRINTF(("illegal partition\n"));
return EPART;
}
DPRINTF(("label info: d_secsize %d, d_nsectors %d, d_ncylinders %d,"
" d_ntracks %d, d_secpercyl %d\n",
sd->sc_label.d_secsize,
sd->sc_label.d_nsectors,
sd->sc_label.d_ncylinders,
sd->sc_label.d_ntracks,
sd->sc_label.d_secpercyl));
return 0;
}
