diff options
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h')
| -rw-r--r-- | xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h b/xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h index 3d219eeedc..e0b9cf6391 100644 --- a/xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h +++ b/xenolinux-2.4.21-pre4-sparse/arch/xeno/drivers/block/xl_block.h @@ -35,12 +35,20 @@ #define DPRINTK_IOCTL(_f, _a...) ((void)0) #endif -/* IDE/SCSI have <= 32 partitions per device. VIRT has <= 16. */ -#define PARTN_SHIFT(_dev) ((MAJOR(_dev)==XLVIRT_MAJOR) ? 4 : 5) -#define XLIDE_PARTN_SHIFT 5 -#define XLSCSI_PARTN_SHIFT 5 +/* XL IDE and SCSI use same major/minor numbers as normal Linux devices. */ +#define XLIDE_MAJOR IDE0_MAJOR +#define XLSCSI_MAJOR SCSI_DISK0_MAJOR + +/* IDE has < 64 partitions per device. VIRT and SCSI have < 16. */ +#define PARTN_SHIFT(_dev) ((MAJOR(_dev)==IDE0_MAJOR) ? 6 : 4) +#define XLIDE_PARTN_SHIFT 6 +#define XLSCSI_PARTN_SHIFT 4 #define XLVIRT_PARTN_SHIFT 4 +#define XLIDE_DEVS_PER_MAJOR (256 >> XLIDE_PARTN_SHIFT) +#define XLSCSI_DEVS_PER_MAJOR (256 >> XLSCSI_PARTN_SHIFT) +#define XLVIRT_DEVS_PER_MAJOR (256 >> XLVIRT_PARTN_SHIFT) + /* * We have one of these per XL-IDE, XL-SCSI, and XL-VIRT device. * They hang in an array off the gendisk structure. We may end up putting |