#ifndef _BLK_H
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#ifndef _BLK_H
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#define _BLK_H
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#define _BLK_H
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#include <linux/blkdev.h>
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#include <linux/blkdev.h>
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#include <linux/locks.h>
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#include <linux/locks.h>
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#include <linux/config.h>
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#include <linux/config.h>
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/*
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/*
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* NR_REQUEST is the number of entries in the request-queue.
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* NR_REQUEST is the number of entries in the request-queue.
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* NOTE that writes may use only the low 2/3 of these: reads
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* NOTE that writes may use only the low 2/3 of these: reads
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* take precedence.
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* take precedence.
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*/
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*/
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#define NR_REQUEST 64
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#define NR_REQUEST 64
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/*
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/*
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* This is used in the elevator algorithm. We don't prioritise reads
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* This is used in the elevator algorithm. We don't prioritise reads
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* over writes any more --- although reads are more time-critical than
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* over writes any more --- although reads are more time-critical than
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* writes, by treating them equally we increase filesystem throughput.
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* writes, by treating them equally we increase filesystem throughput.
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* This turns out to give better overall performance. -- sct
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* This turns out to give better overall performance. -- sct
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*/
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*/
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#define IN_ORDER(s1,s2) \
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#define IN_ORDER(s1,s2) \
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((s1)->rq_dev < (s2)->rq_dev || (((s1)->rq_dev == (s2)->rq_dev && \
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((s1)->rq_dev < (s2)->rq_dev || (((s1)->rq_dev == (s2)->rq_dev && \
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(s1)->sector < (s2)->sector)))
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(s1)->sector < (s2)->sector)))
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/*
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/*
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* These will have to be changed to be aware of different buffer
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* These will have to be changed to be aware of different buffer
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* sizes etc.. It actually needs a major cleanup.
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* sizes etc.. It actually needs a major cleanup.
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*/
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*/
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#if defined(IDE_DRIVER) || defined(MD_DRIVER)
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#if defined(IDE_DRIVER) || defined(MD_DRIVER)
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#define SECTOR_MASK ((BLOCK_SIZE >> 9) - 1)
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#define SECTOR_MASK ((BLOCK_SIZE >> 9) - 1)
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#else
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#else
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#define SECTOR_MASK (blksize_size[MAJOR_NR] && \
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#define SECTOR_MASK (blksize_size[MAJOR_NR] && \
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blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] ? \
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blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] ? \
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((blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] >> 9) - 1) : \
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((blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] >> 9) - 1) : \
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((BLOCK_SIZE >> 9) - 1))
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((BLOCK_SIZE >> 9) - 1))
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#endif /* IDE_DRIVER */
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#endif /* IDE_DRIVER */
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#define SUBSECTOR(block) (CURRENT->current_nr_sectors > 0)
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#define SUBSECTOR(block) (CURRENT->current_nr_sectors > 0)
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#ifdef CONFIG_CDU31A
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#ifdef CONFIG_CDU31A
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extern int cdu31a_init(void);
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extern int cdu31a_init(void);
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#endif CONFIG_CDU31A
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#endif CONFIG_CDU31A
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#ifdef CONFIG_MCD
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#ifdef CONFIG_MCD
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extern int mcd_init(void);
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extern int mcd_init(void);
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#endif CONFIG_MCD
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#endif CONFIG_MCD
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#ifdef CONFIG_MCDX
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#ifdef CONFIG_MCDX
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extern int mcdx_init(void);
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extern int mcdx_init(void);
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#endif CONFIG_MCDX
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#endif CONFIG_MCDX
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#ifdef CONFIG_SBPCD
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#ifdef CONFIG_SBPCD
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extern int sbpcd_init(void);
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extern int sbpcd_init(void);
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#endif CONFIG_SBPCD
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#endif CONFIG_SBPCD
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#ifdef CONFIG_AZTCD
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#ifdef CONFIG_AZTCD
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extern int aztcd_init(void);
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extern int aztcd_init(void);
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#endif CONFIG_AZTCD
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#endif CONFIG_AZTCD
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#ifdef CONFIG_CDU535
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#ifdef CONFIG_CDU535
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extern int sony535_init(void);
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extern int sony535_init(void);
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#endif CONFIG_CDU535
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#endif CONFIG_CDU535
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#ifdef CONFIG_GSCD
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#ifdef CONFIG_GSCD
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extern int gscd_init(void);
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extern int gscd_init(void);
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#endif CONFIG_GSCD
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#endif CONFIG_GSCD
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#ifdef CONFIG_CM206
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#ifdef CONFIG_CM206
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extern int cm206_init(void);
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extern int cm206_init(void);
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#endif CONFIG_CM206
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#endif CONFIG_CM206
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#ifdef CONFIG_OPTCD
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#ifdef CONFIG_OPTCD
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extern int optcd_init(void);
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extern int optcd_init(void);
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#endif CONFIG_OPTCD
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#endif CONFIG_OPTCD
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#ifdef CONFIG_SJCD
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#ifdef CONFIG_SJCD
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extern int sjcd_init(void);
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extern int sjcd_init(void);
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#endif CONFIG_SJCD
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#endif CONFIG_SJCD
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#ifdef CONFIG_BLK_DEV_HD
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#ifdef CONFIG_BLK_DEV_HD
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extern int hd_init(void);
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extern int hd_init(void);
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#endif
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#endif
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#ifdef CONFIG_BLK_DEV_IDE
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#ifdef CONFIG_BLK_DEV_IDE
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extern int ide_init(void);
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extern int ide_init(void);
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#endif
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#endif
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#ifdef CONFIG_BLK_DEV_XD
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#ifdef CONFIG_BLK_DEV_XD
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extern int xd_init(void);
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extern int xd_init(void);
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#endif
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#endif
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#ifdef CONFIG_BLK_DEV_LOOP
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#ifdef CONFIG_BLK_DEV_LOOP
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extern int loop_init(void);
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extern int loop_init(void);
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#endif
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#endif
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#ifdef CONFIG_BLK_DEV_MD
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#ifdef CONFIG_BLK_DEV_MD
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extern int md_init(void);
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extern int md_init(void);
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#endif CONFIG_BLK_DEV_MD
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#endif CONFIG_BLK_DEV_MD
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extern void set_device_ro(kdev_t dev,int flag);
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extern void set_device_ro(kdev_t dev,int flag);
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void add_blkdev_randomness(int major);
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void add_blkdev_randomness(int major);
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extern int floppy_init(void);
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extern int floppy_init(void);
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extern void rd_load(void);
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extern void rd_load(void);
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extern int rd_init(void);
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extern int rd_init(void);
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extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
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extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
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extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
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extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
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extern int rd_image_start; /* starting block # of image */
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extern int rd_image_start; /* starting block # of image */
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#ifdef CONFIG_BLK_DEV_INITRD
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#ifdef CONFIG_BLK_DEV_INITRD
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#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
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#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
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extern unsigned long initrd_start,initrd_end;
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extern unsigned long initrd_start,initrd_end;
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extern int mount_initrd; /* zero if initrd should not be mounted */
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extern int mount_initrd; /* zero if initrd should not be mounted */
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void initrd_init(void);
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void initrd_init(void);
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#endif
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#endif
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#define RO_IOCTLS(dev,where) \
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#define RO_IOCTLS(dev,where) \
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case BLKROSET: { int __err; if (!suser()) return -EACCES; \
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case BLKROSET: { int __err; if (!suser()) return -EACCES; \
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__err = verify_area(VERIFY_READ, (void *) (where), sizeof(long)); \
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__err = verify_area(VERIFY_READ, (void *) (where), sizeof(long)); \
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if (!__err) set_device_ro((dev),get_fs_long((long *) (where))); return __err; } \
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if (!__err) set_device_ro((dev),get_fs_long((long *) (where))); return __err; } \
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case BLKROGET: { int __err = verify_area(VERIFY_WRITE, (void *) (where), sizeof(long)); \
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case BLKROGET: { int __err = verify_area(VERIFY_WRITE, (void *) (where), sizeof(long)); \
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if (!__err) put_fs_long(0!=is_read_only(dev),(long *) (where)); return __err; }
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if (!__err) put_fs_long(0!=is_read_only(dev),(long *) (where)); return __err; }
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#if defined(MAJOR_NR) || defined(IDE_DRIVER)
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#if defined(MAJOR_NR) || defined(IDE_DRIVER)
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/*
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/*
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* Add entries as needed.
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* Add entries as needed.
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*/
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*/
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#ifdef IDE_DRIVER
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#ifdef IDE_DRIVER
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#define DEVICE_NR(device) (MINOR(device) >> PARTN_BITS)
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#define DEVICE_NR(device) (MINOR(device) >> PARTN_BITS)
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#define DEVICE_ON(device) /* nothing */
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#define DEVICE_ON(device) /* nothing */
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#define DEVICE_OFF(device) /* nothing */
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#define DEVICE_OFF(device) /* nothing */
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#elif (MAJOR_NR == RAMDISK_MAJOR)
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#elif (MAJOR_NR == RAMDISK_MAJOR)
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/* ram disk */
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/* ram disk */
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#define DEVICE_NAME "ramdisk"
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#define DEVICE_NAME "ramdisk"
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#define DEVICE_REQUEST rd_request
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#define DEVICE_REQUEST rd_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#define DEVICE_NO_RANDOM
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#define DEVICE_NO_RANDOM
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#elif (MAJOR_NR == FLOPPY_MAJOR)
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#elif (MAJOR_NR == FLOPPY_MAJOR)
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static void floppy_off(unsigned int nr);
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static void floppy_off(unsigned int nr);
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#define DEVICE_NAME "floppy"
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#define DEVICE_NAME "floppy"
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#define DEVICE_INTR do_floppy
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#define DEVICE_INTR do_floppy
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#define DEVICE_REQUEST do_fd_request
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#define DEVICE_REQUEST do_fd_request
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#define DEVICE_NR(device) ( (MINOR(device) & 3) | ((MINOR(device) & 0x80 ) >> 5 ))
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#define DEVICE_NR(device) ( (MINOR(device) & 3) | ((MINOR(device) & 0x80 ) >> 5 ))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device) floppy_off(DEVICE_NR(device))
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#define DEVICE_OFF(device) floppy_off(DEVICE_NR(device))
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#elif (MAJOR_NR == HD_MAJOR)
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#elif (MAJOR_NR == HD_MAJOR)
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/* harddisk: timeout is 6 seconds.. */
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/* harddisk: timeout is 6 seconds.. */
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#define DEVICE_NAME "harddisk"
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#define DEVICE_NAME "harddisk"
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#define DEVICE_INTR do_hd
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#define DEVICE_INTR do_hd
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#define DEVICE_TIMEOUT HD_TIMER
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#define DEVICE_TIMEOUT HD_TIMER
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#define TIMEOUT_VALUE (6*HZ)
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#define TIMEOUT_VALUE (6*HZ)
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#define DEVICE_REQUEST do_hd_request
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#define DEVICE_REQUEST do_hd_request
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#define DEVICE_NR(device) (MINOR(device)>>6)
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#define DEVICE_NR(device) (MINOR(device)>>6)
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == SCSI_DISK_MAJOR)
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#elif (MAJOR_NR == SCSI_DISK_MAJOR)
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#define DEVICE_NAME "scsidisk"
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#define DEVICE_NAME "scsidisk"
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#define DEVICE_INTR do_sd
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#define DEVICE_INTR do_sd
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#define TIMEOUT_VALUE (2*HZ)
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#define TIMEOUT_VALUE (2*HZ)
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#define DEVICE_REQUEST do_sd_request
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#define DEVICE_REQUEST do_sd_request
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#define DEVICE_NR(device) (MINOR(device) >> 4)
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#define DEVICE_NR(device) (MINOR(device) >> 4)
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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/* Kludge to use the same number for both char and block major numbers */
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/* Kludge to use the same number for both char and block major numbers */
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#elif (MAJOR_NR == MD_MAJOR) && defined(MD_DRIVER)
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#elif (MAJOR_NR == MD_MAJOR) && defined(MD_DRIVER)
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#define DEVICE_NAME "Multiple devices driver"
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#define DEVICE_NAME "Multiple devices driver"
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#define DEVICE_REQUEST do_md_request
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#define DEVICE_REQUEST do_md_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == SCSI_TAPE_MAJOR)
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#elif (MAJOR_NR == SCSI_TAPE_MAJOR)
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#define DEVICE_NAME "scsitape"
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#define DEVICE_NAME "scsitape"
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#define DEVICE_INTR do_st
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#define DEVICE_INTR do_st
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#define DEVICE_NR(device) (MINOR(device) & 0x7f)
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#define DEVICE_NR(device) (MINOR(device) & 0x7f)
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == SCSI_CDROM_MAJOR)
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#elif (MAJOR_NR == SCSI_CDROM_MAJOR)
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#define DEVICE_NAME "CD-ROM"
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#define DEVICE_NAME "CD-ROM"
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#define DEVICE_INTR do_sr
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#define DEVICE_INTR do_sr
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#define DEVICE_REQUEST do_sr_request
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#define DEVICE_REQUEST do_sr_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == XT_DISK_MAJOR)
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#elif (MAJOR_NR == XT_DISK_MAJOR)
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#define DEVICE_NAME "xt disk"
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#define DEVICE_NAME "xt disk"
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#define DEVICE_REQUEST do_xd_request
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#define DEVICE_REQUEST do_xd_request
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#define DEVICE_NR(device) (MINOR(device) >> 6)
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#define DEVICE_NR(device) (MINOR(device) >> 6)
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif defined(MFM_DISK_MAJOR) && (MAJOR_NR == MFM_DISK_MAJOR)
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#elif defined(MFM_DISK_MAJOR) && (MAJOR_NR == MFM_DISK_MAJOR)
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#define DEVICE_NAME "mfm disk"
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#define DEVICE_NAME "mfm disk"
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#define DEVICE_INTR do_mfm
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#define DEVICE_INTR do_mfm
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#define DEVICE_REQUEST do_mfm_request
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#define DEVICE_REQUEST do_mfm_request
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#define DEVICE_NR(device) (MINOR(device) >> 6)
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#define DEVICE_NR(device) (MINOR(device) >> 6)
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == CDU31A_CDROM_MAJOR)
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#elif (MAJOR_NR == CDU31A_CDROM_MAJOR)
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#define DEVICE_NAME "CDU31A"
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#define DEVICE_NAME "CDU31A"
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#define DEVICE_REQUEST do_cdu31a_request
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#define DEVICE_REQUEST do_cdu31a_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MITSUMI_CDROM_MAJOR)
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#elif (MAJOR_NR == MITSUMI_CDROM_MAJOR)
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#define DEVICE_NAME "Mitsumi CD-ROM"
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#define DEVICE_NAME "Mitsumi CD-ROM"
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/* #define DEVICE_INTR do_mcd */
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/* #define DEVICE_INTR do_mcd */
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#define DEVICE_REQUEST do_mcd_request
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#define DEVICE_REQUEST do_mcd_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MITSUMI_X_CDROM_MAJOR)
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#elif (MAJOR_NR == MITSUMI_X_CDROM_MAJOR)
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#define DEVICE_NAME "Mitsumi CD-ROM"
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#define DEVICE_NAME "Mitsumi CD-ROM"
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/* #define DEVICE_INTR do_mcdx */
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/* #define DEVICE_INTR do_mcdx */
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#define DEVICE_REQUEST do_mcdx_request
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#define DEVICE_REQUEST do_mcdx_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MATSUSHITA_CDROM_MAJOR)
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#elif (MAJOR_NR == MATSUSHITA_CDROM_MAJOR)
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#define DEVICE_NAME "Matsushita CD-ROM controller #1"
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#define DEVICE_NAME "Matsushita CD-ROM controller #1"
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#define DEVICE_REQUEST do_sbpcd_request
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#define DEVICE_REQUEST do_sbpcd_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MATSUSHITA_CDROM2_MAJOR)
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#elif (MAJOR_NR == MATSUSHITA_CDROM2_MAJOR)
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#define DEVICE_NAME "Matsushita CD-ROM controller #2"
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#define DEVICE_NAME "Matsushita CD-ROM controller #2"
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#define DEVICE_REQUEST do_sbpcd2_request
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#define DEVICE_REQUEST do_sbpcd2_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MATSUSHITA_CDROM3_MAJOR)
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#elif (MAJOR_NR == MATSUSHITA_CDROM3_MAJOR)
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#define DEVICE_NAME "Matsushita CD-ROM controller #3"
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#define DEVICE_NAME "Matsushita CD-ROM controller #3"
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#define DEVICE_REQUEST do_sbpcd3_request
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#define DEVICE_REQUEST do_sbpcd3_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == MATSUSHITA_CDROM4_MAJOR)
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#elif (MAJOR_NR == MATSUSHITA_CDROM4_MAJOR)
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#define DEVICE_NAME "Matsushita CD-ROM controller #4"
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#define DEVICE_NAME "Matsushita CD-ROM controller #4"
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#define DEVICE_REQUEST do_sbpcd4_request
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#define DEVICE_REQUEST do_sbpcd4_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == AZTECH_CDROM_MAJOR)
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#elif (MAJOR_NR == AZTECH_CDROM_MAJOR)
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#define DEVICE_NAME "Aztech CD-ROM"
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#define DEVICE_NAME "Aztech CD-ROM"
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#define DEVICE_REQUEST do_aztcd_request
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#define DEVICE_REQUEST do_aztcd_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == CDU535_CDROM_MAJOR)
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#elif (MAJOR_NR == CDU535_CDROM_MAJOR)
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#define DEVICE_NAME "SONY-CDU535"
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#define DEVICE_NAME "SONY-CDU535"
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#define DEVICE_INTR do_cdu535
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#define DEVICE_INTR do_cdu535
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#define DEVICE_REQUEST do_cdu535_request
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#define DEVICE_REQUEST do_cdu535_request
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_NR(device) (MINOR(device))
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#define DEVICE_ON(device)
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#define DEVICE_ON(device)
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#define DEVICE_OFF(device)
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#define DEVICE_OFF(device)
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#elif (MAJOR_NR == GOLDSTAR_CDROM_MAJOR)
|
#elif (MAJOR_NR == GOLDSTAR_CDROM_MAJOR)
|
|
|
#define DEVICE_NAME "Goldstar R420"
|
#define DEVICE_NAME "Goldstar R420"
|
#define DEVICE_REQUEST do_gscd_request
|
#define DEVICE_REQUEST do_gscd_request
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_ON(device)
|
#define DEVICE_ON(device)
|
#define DEVICE_OFF(device)
|
#define DEVICE_OFF(device)
|
|
|
#elif (MAJOR_NR == CM206_CDROM_MAJOR)
|
#elif (MAJOR_NR == CM206_CDROM_MAJOR)
|
#define DEVICE_NAME "Philips/LMS cd-rom cm206"
|
#define DEVICE_NAME "Philips/LMS cd-rom cm206"
|
#define DEVICE_REQUEST do_cm206_request
|
#define DEVICE_REQUEST do_cm206_request
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_ON(device)
|
#define DEVICE_ON(device)
|
#define DEVICE_OFF(device)
|
#define DEVICE_OFF(device)
|
|
|
#elif (MAJOR_NR == OPTICS_CDROM_MAJOR)
|
#elif (MAJOR_NR == OPTICS_CDROM_MAJOR)
|
|
|
#define DEVICE_NAME "DOLPHIN 8000AT CD-ROM"
|
#define DEVICE_NAME "DOLPHIN 8000AT CD-ROM"
|
#define DEVICE_REQUEST do_optcd_request
|
#define DEVICE_REQUEST do_optcd_request
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_ON(device)
|
#define DEVICE_ON(device)
|
#define DEVICE_OFF(device)
|
#define DEVICE_OFF(device)
|
|
|
#elif (MAJOR_NR == SANYO_CDROM_MAJOR)
|
#elif (MAJOR_NR == SANYO_CDROM_MAJOR)
|
|
|
#define DEVICE_NAME "Sanyo H94A CD-ROM"
|
#define DEVICE_NAME "Sanyo H94A CD-ROM"
|
#define DEVICE_REQUEST do_sjcd_request
|
#define DEVICE_REQUEST do_sjcd_request
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_NR(device) (MINOR(device))
|
#define DEVICE_ON(device)
|
#define DEVICE_ON(device)
|
#define DEVICE_OFF(device)
|
#define DEVICE_OFF(device)
|
|
|
#endif /* MAJOR_NR == whatever */
|
#endif /* MAJOR_NR == whatever */
|
|
|
#if (MAJOR_NR != SCSI_TAPE_MAJOR)
|
#if (MAJOR_NR != SCSI_TAPE_MAJOR)
|
#if !defined(IDE_DRIVER)
|
#if !defined(IDE_DRIVER)
|
|
|
#ifndef CURRENT
|
#ifndef CURRENT
|
#define CURRENT (blk_dev[MAJOR_NR].current_request)
|
#define CURRENT (blk_dev[MAJOR_NR].current_request)
|
#endif
|
#endif
|
|
|
#define CURRENT_DEV DEVICE_NR(CURRENT->rq_dev)
|
#define CURRENT_DEV DEVICE_NR(CURRENT->rq_dev)
|
|
|
#ifdef DEVICE_INTR
|
#ifdef DEVICE_INTR
|
static void (*DEVICE_INTR)(void) = NULL;
|
static void (*DEVICE_INTR)(void) = NULL;
|
#endif
|
#endif
|
#ifdef DEVICE_TIMEOUT
|
#ifdef DEVICE_TIMEOUT
|
|
|
#define SET_TIMER \
|
#define SET_TIMER \
|
((timer_table[DEVICE_TIMEOUT].expires = jiffies + TIMEOUT_VALUE), \
|
((timer_table[DEVICE_TIMEOUT].expires = jiffies + TIMEOUT_VALUE), \
|
(timer_active |= 1<<DEVICE_TIMEOUT))
|
(timer_active |= 1<<DEVICE_TIMEOUT))
|
|
|
#define CLEAR_TIMER \
|
#define CLEAR_TIMER \
|
timer_active &= ~(1<<DEVICE_TIMEOUT)
|
timer_active &= ~(1<<DEVICE_TIMEOUT)
|
|
|
#define SET_INTR(x) \
|
#define SET_INTR(x) \
|
if ((DEVICE_INTR = (x)) != NULL) \
|
if ((DEVICE_INTR = (x)) != NULL) \
|
SET_TIMER; \
|
SET_TIMER; \
|
else \
|
else \
|
CLEAR_TIMER;
|
CLEAR_TIMER;
|
|
|
#else
|
#else
|
|
|
#define SET_INTR(x) (DEVICE_INTR = (x))
|
#define SET_INTR(x) (DEVICE_INTR = (x))
|
|
|
#endif /* DEVICE_TIMEOUT */
|
#endif /* DEVICE_TIMEOUT */
|
|
|
static void (DEVICE_REQUEST)(void);
|
static void (DEVICE_REQUEST)(void);
|
|
|
#ifdef DEVICE_INTR
|
#ifdef DEVICE_INTR
|
#define CLEAR_INTR SET_INTR(NULL)
|
#define CLEAR_INTR SET_INTR(NULL)
|
#else
|
#else
|
#define CLEAR_INTR
|
#define CLEAR_INTR
|
#endif
|
#endif
|
|
|
#define INIT_REQUEST \
|
#define INIT_REQUEST \
|
if (!CURRENT) {\
|
if (!CURRENT) {\
|
CLEAR_INTR; \
|
CLEAR_INTR; \
|
return; \
|
return; \
|
} \
|
} \
|
if (MAJOR(CURRENT->rq_dev) != MAJOR_NR) \
|
if (MAJOR(CURRENT->rq_dev) != MAJOR_NR) \
|
panic(DEVICE_NAME ": request list destroyed"); \
|
panic(DEVICE_NAME ": request list destroyed"); \
|
if (CURRENT->bh) { \
|
if (CURRENT->bh) { \
|
if (!buffer_locked(CURRENT->bh)) \
|
if (!buffer_locked(CURRENT->bh)) \
|
panic(DEVICE_NAME ": block not locked"); \
|
panic(DEVICE_NAME ": block not locked"); \
|
}
|
}
|
|
|
#endif /* !defined(IDE_DRIVER) */
|
#endif /* !defined(IDE_DRIVER) */
|
|
|
/* end_request() - SCSI devices have their own version */
|
/* end_request() - SCSI devices have their own version */
|
/* - IDE drivers have their own copy too */
|
/* - IDE drivers have their own copy too */
|
|
|
#if ! SCSI_BLK_MAJOR(MAJOR_NR)
|
#if ! SCSI_BLK_MAJOR(MAJOR_NR)
|
|
|
#if defined(IDE_DRIVER) && !defined(_IDE_C) /* shared copy for IDE modules */
|
#if defined(IDE_DRIVER) && !defined(_IDE_C) /* shared copy for IDE modules */
|
void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup);
|
void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup);
|
#else
|
#else
|
|
|
#ifdef IDE_DRIVER
|
#ifdef IDE_DRIVER
|
void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup) {
|
void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup) {
|
struct request *req = hwgroup->rq;
|
struct request *req = hwgroup->rq;
|
#else
|
#else
|
static void end_request(int uptodate) {
|
static void end_request(int uptodate) {
|
struct request *req = CURRENT;
|
struct request *req = CURRENT;
|
#endif /* IDE_DRIVER */
|
#endif /* IDE_DRIVER */
|
struct buffer_head * bh;
|
struct buffer_head * bh;
|
|
|
req->errors = 0;
|
req->errors = 0;
|
if (!uptodate) {
|
if (!uptodate) {
|
printk("end_request: I/O error, dev %s, sector %lu\n",
|
printk("end_request: I/O error, dev %s, sector %lu\n",
|
kdevname(req->rq_dev), req->sector);
|
kdevname(req->rq_dev), req->sector);
|
req->nr_sectors--;
|
req->nr_sectors--;
|
req->nr_sectors &= ~SECTOR_MASK;
|
req->nr_sectors &= ~SECTOR_MASK;
|
req->sector += (BLOCK_SIZE / 512);
|
req->sector += (BLOCK_SIZE / 512);
|
req->sector &= ~SECTOR_MASK;
|
req->sector &= ~SECTOR_MASK;
|
}
|
}
|
|
|
if ((bh = req->bh) != NULL) {
|
if ((bh = req->bh) != NULL) {
|
req->bh = bh->b_reqnext;
|
req->bh = bh->b_reqnext;
|
bh->b_reqnext = NULL;
|
bh->b_reqnext = NULL;
|
mark_buffer_uptodate(bh, uptodate);
|
mark_buffer_uptodate(bh, uptodate);
|
unlock_buffer(bh);
|
unlock_buffer(bh);
|
if ((bh = req->bh) != NULL) {
|
if ((bh = req->bh) != NULL) {
|
req->current_nr_sectors = bh->b_size >> 9;
|
req->current_nr_sectors = bh->b_size >> 9;
|
if (req->nr_sectors < req->current_nr_sectors) {
|
if (req->nr_sectors < req->current_nr_sectors) {
|
req->nr_sectors = req->current_nr_sectors;
|
req->nr_sectors = req->current_nr_sectors;
|
printk("end_request: buffer-list destroyed\n");
|
printk("end_request: buffer-list destroyed\n");
|
}
|
}
|
req->buffer = bh->b_data;
|
req->buffer = bh->b_data;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
#ifndef DEVICE_NO_RANDOM
|
#ifndef DEVICE_NO_RANDOM
|
add_blkdev_randomness(MAJOR(req->rq_dev));
|
add_blkdev_randomness(MAJOR(req->rq_dev));
|
#endif
|
#endif
|
#ifdef IDE_DRIVER
|
#ifdef IDE_DRIVER
|
blk_dev[MAJOR(req->rq_dev)].current_request = req->next;
|
blk_dev[MAJOR(req->rq_dev)].current_request = req->next;
|
hwgroup->rq = NULL;
|
hwgroup->rq = NULL;
|
#else
|
#else
|
DEVICE_OFF(req->rq_dev);
|
DEVICE_OFF(req->rq_dev);
|
CURRENT = req->next;
|
CURRENT = req->next;
|
#endif /* IDE_DRIVER */
|
#endif /* IDE_DRIVER */
|
if (req->sem != NULL)
|
if (req->sem != NULL)
|
up(req->sem);
|
up(req->sem);
|
req->rq_status = RQ_INACTIVE;
|
req->rq_status = RQ_INACTIVE;
|
wake_up(&wait_for_request);
|
wake_up(&wait_for_request);
|
}
|
}
|
#endif /* defined(IDE_DRIVER) && !defined(_IDE_C) */
|
#endif /* defined(IDE_DRIVER) && !defined(_IDE_C) */
|
#endif /* ! SCSI_BLK_MAJOR(MAJOR_NR) */
|
#endif /* ! SCSI_BLK_MAJOR(MAJOR_NR) */
|
#endif /* (MAJOR_NR != SCSI_TAPE_MAJOR) */
|
#endif /* (MAJOR_NR != SCSI_TAPE_MAJOR) */
|
|
|
#endif /* defined(MAJOR_NR) || defined(IDE_DRIVER) */
|
#endif /* defined(MAJOR_NR) || defined(IDE_DRIVER) */
|
|
|
#endif /* _BLK_H */
|
#endif /* _BLK_H */
|
|
|
