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Fix sector size for AT LBA drives at 512 bytes

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svn path=/trunk/; revision=3889
This commit is contained in:
Gé van Geldorp 2002-12-22 11:38:41 +00:00
parent 67cf4a374e
commit ccf4643b4c
1 changed files with 19 additions and 11 deletions
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30
reactos/drivers/storage/atapi/atapi.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: atapi.c,v 1.34 2002/12/15 00:23:31 sedwards Exp $ /* $Id: atapi.c,v 1.35 2002/12/22 11:38:41 gvg Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS ATAPI miniport driver * PROJECT: ReactOS ATAPI miniport driver
@ -1372,21 +1372,29 @@ AtapiIdentifyDevice(IN ULONG CommandPort,
DrvParms->TMSectorCountLo, DrvParms->TMSectorCountLo,
(ULONG)((DrvParms->TMSectorCountHi << 16) + DrvParms->TMSectorCountLo)); (ULONG)((DrvParms->TMSectorCountHi << 16) + DrvParms->TMSectorCountLo));
DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector); if (! Atapi && 0 != (DrvParms->Capabilities & IDE_DRID_LBA_SUPPORTED))
if (DrvParms->BytesPerSector == 0)
{ {
/* LBA ATA drives always have a sector size of 512 */
DrvParms->BytesPerSector = 512; DrvParms->BytesPerSector = 512;
} }
else else
{ {
for (i = 15; i >= 0; i--) DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector);
{ if (DrvParms->BytesPerSector == 0)
if (DrvParms->BytesPerSector & (1 << i)) {
{ DrvParms->BytesPerSector = 512;
DrvParms->BytesPerSector = 1 << i; }
break; else
} {
} for (i = 15; i >= 0; i--)
{
if (DrvParms->BytesPerSector & (1 << i))
{
DrvParms->BytesPerSector = 1 << i;
break;
}
}
}
} }
DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector); DPRINT("BytesPerSector %d\n", DrvParms->BytesPerSector);