| /* |
| * sd.h Copyright (C) 1992 Drew Eckhardt |
| * SCSI disk driver header file by |
| * Drew Eckhardt |
| * |
| * <drew@colorado.edu> |
| * |
| * Modified by Eric Youngdale eric@andante.org to |
| * add scatter-gather, multiple outstanding request, and other |
| * enhancements. |
| */ |
| #ifndef _SD_H |
| #define _SD_H |
| /* |
| $Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/sd.h,v 1.1 1992/07/24 06:27:38 root Exp root $ |
| */ |
| |
| #ifndef _SCSI_H |
| #include "scsi.h" |
| #endif |
| |
| #ifndef _GENDISK_H |
| #include <linux/genhd.h> |
| #endif |
| |
| extern struct hd_struct *sd; |
| |
| typedef struct scsi_disk { |
| unsigned capacity; /* size in blocks */ |
| Scsi_Device *device; |
| unsigned char ready; /* flag ready for FLOPTICAL */ |
| unsigned char write_prot; /* flag write_protect for rmvable dev */ |
| unsigned char sector_bit_size; /* sector_size = 2 to the bit size power */ |
| unsigned char sector_bit_shift; /* power of 2 sectors per FS block */ |
| unsigned has_part_table:1; /* has partition table */ |
| } Scsi_Disk; |
| |
| extern int revalidate_scsidisk(kdev_t dev, int maxusage); |
| |
| /* |
| * Used by pmac to find the device associated with a target. |
| */ |
| extern kdev_t sd_find_target(void *host, int tgt); |
| |
| #define N_SD_MAJORS 8 |
| |
| #define SD_MAJOR_MASK (N_SD_MAJORS - 1) |
| #define SD_PARTITION(i) (((major(i) & SD_MAJOR_MASK) << 8) | (minor(i) & 255)) |
| |
| #endif |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-indent-level: 4 |
| * c-brace-imaginary-offset: 0 |
| * c-brace-offset: -4 |
| * c-argdecl-indent: 4 |
| * c-label-offset: -4 |
| * c-continued-statement-offset: 4 |
| * c-continued-brace-offset: 0 |
| * indent-tabs-mode: nil |
| * tab-width: 8 |
| * End: |
| */ |