/*
* Get drive parameters through 'device identify' command.
*/
int
wd_get_params(struct wd_softc *wd)
{
int error;
uint8_t buf[DEV_BSIZE];
if ((error = wdc_exec_identify(wd, buf)) != 0)
return error;
wd->sc_params = *(struct ataparams *)buf;
/* 48-bit LBA addressing */
if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) {
DPRINTF(("Drive supports LBA48.\n"));
#if defined(_ENABLE_LBA48)
wd->sc_flags |= WDF_LBA48;
#endif
}
/* Prior to ATA-4, LBA was optional. */
if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) {
DPRINTF(("Drive supports LBA.\n"));
wd->sc_flags |= WDF_LBA;
}
return 0;
}
/*
* Get drive parameters through 'device identify' command.
*/
int
wd_get_params(struct wd_softc *wd)
{
int error;
uint8_t buf[DEV_BSIZE];
if ((error = wdc_exec_identify(wd, buf)) != 0)
return error;
wd->sc_params = *(struct ataparams *)buf;
/* 48-bit LBA addressing */
if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0)
wd->sc_flags |= WDF_LBA48;
/* Prior to ATA-4, LBA was optional. */
if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0)
wd->sc_flags |= WDF_LBA;
if ((wd->sc_flags & WDF_LBA48) != 0) {
DPRINTF(("Drive supports LBA48.\n"));
wd->sc_capacity =
((uint64_t)wd->sc_params.atap_max_lba[3] << 48) |
((uint64_t)wd->sc_params.atap_max_lba[2] << 32) |
((uint64_t)wd->sc_params.atap_max_lba[1] << 16) |
((uint64_t)wd->sc_params.atap_max_lba[0] << 0);
DPRINTF(("atap_max_lba = (0x%x, 0x%x, 0x%x, 0x%x)\n",
wd->sc_params.atap_max_lba[3],
wd->sc_params.atap_max_lba[2],
wd->sc_params.atap_max_lba[1],
wd->sc_params.atap_max_lba[0]));
wd->sc_capacity28 =
((uint32_t)wd->sc_params.atap_capacity[1] << 16) |
((uint32_t)wd->sc_params.atap_capacity[0] << 0);
DPRINTF(("atap_capacity = (0x%x, 0x%x)\n",
wd->sc_params.atap_capacity[1],
wd->sc_params.atap_capacity[0]));
} else if ((wd->sc_flags & WDF_LBA) != 0) {
DPRINTF(("Drive supports LBA.\n"));
wd->sc_capacity =
((uint32_t)wd->sc_params.atap_capacity[1] << 16) |
((uint32_t)wd->sc_params.atap_capacity[0] << 0);
wd->sc_capacity28 =
((uint32_t)wd->sc_params.atap_capacity[1] << 16) |
((uint32_t)wd->sc_params.atap_capacity[0] << 0);
} else {
DPRINTF(("Drive doesn't support LBA; using CHS.\n"));
wd->sc_capacity = wd->sc_capacity28 =
wd->sc_params.atap_cylinders *
wd->sc_params.atap_heads *
wd->sc_params.atap_sectors;
}
DPRINTF(("wd->sc_capacity = %" PRId64 ", wd->sc_capacity28 = %d.\n",
wd->sc_capacity, wd->sc_capacity28));
return 0;
}
