static int
sd_get_simplifiedparms(struct sd_softc *sd)
{
struct {
struct scsi_mode_parameter_header_6 header;
/* no block descriptor */
uint8_t pg_code; /* page code (should be 6) */
uint8_t pg_length; /* page length (should be 11) */
uint8_t wcd; /* bit0: cache disable */
uint8_t lbs[2]; /* logical block size */
uint8_t size[5]; /* number of log. blocks */
uint8_t pp; /* power/performance */
uint8_t flags;
uint8_t resvd;
} scsipi_sense;
struct disk_parms *dp = &sd->sc_params;
uint64_t blocks;
int error, blksize;
/*
* sd_read_capacity (ie "read capacity") and mode sense page 6
* give the same information. Do both for now, and check
* for consistency.
* XXX probably differs for removable media
*/
dp->blksize = SD_DEFAULT_BLKSIZE;
if ((blocks = sd_read_capacity(sd, &blksize)) == 0)
return SDGP_RESULT_OFFLINE; /* XXX? */
error = scsi_mode_sense(sd, SMS_DBD, 6,
&scsipi_sense.header, sizeof(scsipi_sense));
if (error != 0)
return SDGP_RESULT_OFFLINE; /* XXX? */
dp->blksize = blksize;
if (!sd_validate_blksize(dp->blksize))
dp->blksize = _2btol(scsipi_sense.lbs);
if (!sd_validate_blksize(dp->blksize))
dp->blksize = SD_DEFAULT_BLKSIZE;
/*
* Create a pseudo-geometry.
*/
dp->heads = 64;
dp->sectors = 32;
dp->cyls = blocks / (dp->heads * dp->sectors);
dp->disksize = _5btol(scsipi_sense.size);
if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) {
printf("RBC size: mode sense=%llu, get cap=%llu\n",
(unsigned long long)dp->disksize,
(unsigned long long)blocks);
dp->disksize = blocks;
}
dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE;
return SDGP_RESULT_OK;
}
/*
* Fill out the disk parameter structure. Return SDGP_RESULT_OK if the
* structure is correctly filled in, SDGP_RESULT_OFFLINE otherwise. The caller
* is responsible for clearing the SDEV_MEDIA_LOADED flag if the structure
* cannot be completed.
*/
int
sd_get_parms(struct sd_softc *sc, struct disk_parms *dp, int flags)
{
union scsi_mode_sense_buf *buf = NULL;
struct page_rigid_geometry *rigid = NULL;
struct page_flex_geometry *flex = NULL;
struct page_reduced_geometry *reduced = NULL;
u_char *page0 = NULL;
u_int32_t heads = 0, sectors = 0, cyls = 0, secsize = 0;
int err = 0, big;
if (sd_size(sc, flags) != 0)
return (SDGP_RESULT_OFFLINE);
if (ISSET(sc->flags, SDF_THIN) && sd_thin_params(sc, flags) != 0) {
/* we dont know the unmap limits, so we cant use thin shizz */
CLR(sc->flags, SDF_THIN);
}
buf = dma_alloc(sizeof(*buf), PR_NOWAIT);
if (buf == NULL)
goto validate;
/*
* Ask for page 0 (vendor specific) mode sense data to find
* READONLY info. The only thing USB devices will ask for.
*/
err = scsi_do_mode_sense(sc->sc_link, 0, buf, (void **)&page0,
NULL, NULL, NULL, 1, flags | SCSI_SILENT, &big);
if (err == 0) {
if (big && buf->hdr_big.dev_spec & SMH_DSP_WRITE_PROT)
SET(sc->sc_link->flags, SDEV_READONLY);
else if (!big && buf->hdr.dev_spec & SMH_DSP_WRITE_PROT)
SET(sc->sc_link->flags, SDEV_READONLY);
else
CLR(sc->sc_link->flags, SDEV_READONLY);
}
/*
* Many UMASS devices choke when asked about their geometry. Most
* don't have a meaningful geometry anyway, so just fake it if
* scsi_size() worked.
*/
if ((sc->sc_link->flags & SDEV_UMASS) && (dp->disksize > 0))
goto validate;
switch (sc->sc_link->inqdata.device & SID_TYPE) {
case T_OPTICAL:
/* No more information needed or available. */
break;
case T_RDIRECT:
/* T_RDIRECT supports only PAGE_REDUCED_GEOMETRY (6). */
err = scsi_do_mode_sense(sc->sc_link, PAGE_REDUCED_GEOMETRY,
buf, (void **)&reduced, NULL, NULL, &secsize,
sizeof(*reduced), flags | SCSI_SILENT, NULL);
if (!err && reduced &&
DISK_PGCODE(reduced, PAGE_REDUCED_GEOMETRY)) {
if (dp->disksize == 0)
dp->disksize = _5btol(reduced->sectors);
if (secsize == 0)
secsize = _2btol(reduced->bytes_s);
}
break;
default:
/*
* NOTE: Some devices leave off the last four bytes of
* PAGE_RIGID_GEOMETRY and PAGE_FLEX_GEOMETRY mode sense pages.
* The only information in those four bytes is RPM information
* so accept the page. The extra bytes will be zero and RPM will
* end up with the default value of 3600.
*/
if (((sc->sc_link->flags & SDEV_ATAPI) == 0) ||
((sc->sc_link->flags & SDEV_REMOVABLE) == 0))
err = scsi_do_mode_sense(sc->sc_link,
PAGE_RIGID_GEOMETRY, buf, (void **)&rigid, NULL,
NULL, &secsize, sizeof(*rigid) - 4,
flags | SCSI_SILENT, NULL);
if (!err && rigid && DISK_PGCODE(rigid, PAGE_RIGID_GEOMETRY)) {
heads = rigid->nheads;
cyls = _3btol(rigid->ncyl);
if (heads * cyls > 0)
sectors = dp->disksize / (heads * cyls);
} else {
err = scsi_do_mode_sense(sc->sc_link,
PAGE_FLEX_GEOMETRY, buf, (void **)&flex, NULL, NULL,
&secsize, sizeof(*flex) - 4,
flags | SCSI_SILENT, NULL);
if (!err && flex &&
DISK_PGCODE(flex, PAGE_FLEX_GEOMETRY)) {
sectors = flex->ph_sec_tr;
heads = flex->nheads;
cyls = _2btol(flex->ncyl);
if (secsize == 0)
secsize = _2btol(flex->bytes_s);
if (dp->disksize == 0)
dp->disksize = heads * cyls * sectors;
}
}
break;
}
validate:
if (buf)
dma_free(buf, sizeof(*buf));
if (dp->disksize == 0)
return (SDGP_RESULT_OFFLINE);
if (dp->secsize == 0)
dp->secsize = (secsize == 0) ? 512 : secsize;
/*
* Restrict secsize values to powers of two between 512 and 64k.
*/
switch (dp->secsize) {
case 0x200: /* == 512, == DEV_BSIZE on all architectures. */
case 0x400:
case 0x800:
case 0x1000:
case 0x2000:
case 0x4000:
case 0x8000:
case 0x10000:
break;
default:
SC_DEBUG(sc->sc_link, SDEV_DB1,
("sd_get_parms: bad secsize: %#x\n", dp->secsize));
return (SDGP_RESULT_OFFLINE);
}
/*
* XXX THINK ABOUT THIS!! Using values such that sectors * heads *
* cyls is <= disk_size can lead to wasted space. We need a more
* careful calculation/validation to make everything work out
* optimally.
*/
if (dp->disksize > 0xffffffff && (dp->heads * dp->sectors) < 0xffff) {
dp->heads = 511;
dp->sectors = 255;
cyls = 0;
} else {
/*
* Use standard geometry values for anything we still don't
* know.
*/
dp->heads = (heads == 0) ? 255 : heads;
dp->sectors = (sectors == 0) ? 63 : sectors;
}
dp->cyls = (cyls == 0) ? dp->disksize / (dp->heads * dp->sectors) :
cyls;
if (dp->cyls == 0) {
dp->heads = dp->cyls = 1;
dp->sectors = dp->disksize;
}
return (SDGP_RESULT_OK);
}
/*
* Fill out the disk parameter structure. Return SDGP_RESULT_OK if the
* structure is correctly filled in, SDGP_RESULT_OFFLINE otherwise. The caller
* is responsible for clearing the SDEV_MEDIA_LOADED flag if the structure
* cannot be completed.
*/
int
sd_get_parms(struct sd_softc *sc, struct disk_parms *dp, int flags)
{
union scsi_mode_sense_buf *buf = NULL;
struct page_rigid_geometry *rigid;
struct page_flex_geometry *flex;
struct page_reduced_geometry *reduced;
u_int32_t heads = 0, sectors = 0, cyls = 0, blksize = 0, ssblksize;
u_int16_t rpm = 0;
dp->disksize = scsi_size(sc->sc_link, flags, &ssblksize);
/*
* Many UMASS devices choke when asked about their geometry. Most
* don't have a meaningful geometry anyway, so just fake it if
* scsi_size() worked.
*/
if ((sc->sc_link->flags & SDEV_UMASS) && (dp->disksize > 0))
goto validate; /* N.B. buf will be NULL at validate. */
buf = malloc(sizeof(*buf), M_TEMP, M_NOWAIT);
if (buf == NULL)
goto validate;
switch (sc->sc_link->inqdata.device & SID_TYPE) {
case T_OPTICAL:
/* No more information needed or available. */
break;
case T_RDIRECT:
/* T_RDIRECT supports only PAGE_REDUCED_GEOMETRY (6). */
scsi_do_mode_sense(sc->sc_link, PAGE_REDUCED_GEOMETRY, buf,
(void **)&reduced, NULL, NULL, &blksize, sizeof(*reduced),
flags | SCSI_SILENT, NULL);
if (DISK_PGCODE(reduced, PAGE_REDUCED_GEOMETRY)) {
if (dp->disksize == 0)
dp->disksize = _5btol(reduced->sectors);
if (blksize == 0)
blksize = _2btol(reduced->bytes_s);
}
break;
default:
/*
* NOTE: Some devices leave off the last four bytes of
* PAGE_RIGID_GEOMETRY and PAGE_FLEX_GEOMETRY mode sense pages.
* The only information in those four bytes is RPM information
* so accept the page. The extra bytes will be zero and RPM will
* end up with the default value of 3600.
*/
rigid = NULL;
if (((sc->sc_link->flags & SDEV_ATAPI) == 0) ||
((sc->sc_link->flags & SDEV_REMOVABLE) == 0))
scsi_do_mode_sense(sc->sc_link, PAGE_RIGID_GEOMETRY,
buf, (void **)&rigid, NULL, NULL, &blksize,
sizeof(*rigid) - 4, flags | SCSI_SILENT, NULL);
if (DISK_PGCODE(rigid, PAGE_RIGID_GEOMETRY)) {
heads = rigid->nheads;
cyls = _3btol(rigid->ncyl);
rpm = _2btol(rigid->rpm);
if (heads * cyls > 0)
sectors = dp->disksize / (heads * cyls);
} else {
scsi_do_mode_sense(sc->sc_link, PAGE_FLEX_GEOMETRY,
buf, (void **)&flex, NULL, NULL, &blksize,
sizeof(*flex) - 4, flags | SCSI_SILENT, NULL);
if (DISK_PGCODE(flex, PAGE_FLEX_GEOMETRY)) {
sectors = flex->ph_sec_tr;
heads = flex->nheads;
cyls = _2btol(flex->ncyl);
rpm = _2btol(flex->rpm);
if (blksize == 0)
blksize = _2btol(flex->bytes_s);
if (dp->disksize == 0)
dp->disksize = heads * cyls * sectors;
}
}
break;
}
validate:
if (buf)
free(buf, M_TEMP);
if (dp->disksize == 0)
return (SDGP_RESULT_OFFLINE);
if (ssblksize > 0)
dp->blksize = ssblksize;
else
dp->blksize = (blksize == 0) ? 512 : blksize;
/*
* Restrict blksize values to powers of two between 512 and 64k.
*/
switch (dp->blksize) {
case 0x200: /* == 512, == DEV_BSIZE on all architectures. */
case 0x400:
case 0x800:
case 0x1000:
case 0x2000:
case 0x4000:
case 0x8000:
case 0x10000:
break;
default:
SC_DEBUG(sc->sc_link, SDEV_DB1,
("sd_get_parms: bad blksize: %#x\n", dp->blksize));
return (SDGP_RESULT_OFFLINE);
}
/*
* XXX THINK ABOUT THIS!! Using values such that sectors * heads *
* cyls is <= disk_size can lead to wasted space. We need a more
* careful calculation/validation to make everything work out
* optimally.
*/
if (dp->disksize > 0xffffffff && (dp->heads * dp->sectors) < 0xffff) {
dp->heads = 511;
dp->sectors = 255;
cyls = 0;
} else {
/*
* Use standard geometry values for anything we still don't
* know.
*/
dp->heads = (heads == 0) ? 255 : heads;
dp->sectors = (sectors == 0) ? 63 : sectors;
dp->rot_rate = (rpm == 0) ? 3600 : rpm;
}
dp->cyls = (cyls == 0) ? dp->disksize / (dp->heads * dp->sectors) :
cyls;
if (dp->cyls == 0) {
dp->heads = dp->cyls = 1;
dp->sectors = dp->disksize;
}
return (SDGP_RESULT_OK);
}
