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/*
* sd.h Copyright (C) 1992 Drew Eckhardt
* SCSI disk driver header file by
* Drew Eckhardt
*
* <drew@colorado.edu>
*
* Modified by Eric Youngdale eric@aib.com 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 */
unsigned sector_size; /* size in bytes */
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 ten:1; /* support ten byte read / write */
unsigned remap:1; /* support remapping */
unsigned has_part_table:1; /* has partition table */
} Scsi_Disk;
extern Scsi_Disk *rscsi_disks;
extern int revalidate_scsidisk(kdev_t dev, int maxusage);
#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:
*/
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