47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
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/*
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* sd.h Copyright (C) 1992 Drew Eckhardt
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* SCSI disk driver header file by
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* Drew Eckhardt
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*
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* <drew@colorado.edu>
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*
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* Modified by Eric Youngdale eric@tantalus.nrl.navy.mil to
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* add scatter-gather, multiple outstanding request, and other
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* enhancements.
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*/
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#ifndef _SD_H
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#define _SD_H
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/*
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$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/sd.h,v 1.1 1992/07/24 06:27:38 root Exp root $
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*/
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#ifndef _SCSI_H
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#include "scsi.h"
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#endif
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#ifndef _GENDISK_H
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#include <linux/genhd.h>
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#endif
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/*
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This is an arbitrary constant, and may be changed to whatever
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suits your purposes. Note that smaller will get you a few bytes
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more in kernel space if that is your thing.
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*/
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extern struct hd_struct * sd;
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typedef struct {
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unsigned capacity; /* size in blocks */
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unsigned sector_size; /* size in bytes */
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Scsi_Device *device;
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unsigned char sector_bit_size; /* sector_size = 2 to the bit size power */
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unsigned char sector_bit_shift; /* power of 2 sectors per FS block */
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unsigned ten:1; /* support ten byte read / write */
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unsigned remap:1; /* support remapping */
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} Scsi_Disk;
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extern Scsi_Disk * rscsi_disks;
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#endif
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