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Relax IDE CHS limits from 16383,16,63 to 65535,16,255

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New limits straight from ATA4 6.2 Register delivered data transfer
command sector addressing.

I figure the old sector limit 63 was blindly copied from the BIOS
int 13 limit.  Doesn't apply to the hardware.  No idea where the old
cylinder limit comes from.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2012-07-10 11:12:55 +02:00 committed by Kevin Wolf
parent aaea3f366e
commit b51daf003a
1 changed files with 4 additions and 4 deletions
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8
hw/ide/core.c
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@ -1935,16 +1935,16 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
s->drive_kind = kind;
bdrv_get_geometry(bs, &nb_sectors);
if (cylinders < 1 || cylinders > 16383) {
error_report("cyls must be between 1 and 16383");
if (cylinders < 1 || cylinders > 65535) {
error_report("cyls must be between 1 and 65535");
return -1;
}
if (heads < 1 || heads > 16) {
error_report("heads must be between 1 and 16");
return -1;
}
if (secs < 1 || secs > 63) {
error_report("secs must be between 1 and 63");
if (secs < 1 || secs > 255) {
error_report("secs must be between 1 and 255");
return -1;
}
s->cylinders = cylinders;