patch-1.3.36 linux/drivers/block/blk.h

• Lines: 394
• Date: Thu Jan 1 02:00:00 1970
• Orig file: v1.3.35/linux/drivers/block/blk.h
• Orig date: Fri Oct 13 14:44:32 1995

diff -u --recursive --new-file v1.3.35/linux/drivers/block/blk.h linux/drivers/block/blk.h
@@ -1,393 +0,0 @@
-#ifndef _BLK_H
-#define _BLK_H
-
-#include <linux/blkdev.h>
-#include <linux/locks.h>
-#include <linux/config.h>
-
-/*
- * NR_REQUEST is the number of entries in the request-queue.
- * NOTE that writes may use only the low 2/3 of these: reads
- * take precedence.
- */
-#define NR_REQUEST	64
-
-/*
- * This is used in the elevator algorithm: Note that
- * reads always go before writes. This is natural: reads
- * are much more time-critical than writes.
- */
-#define IN_ORDER(s1,s2) \
-((s1)->cmd < (s2)->cmd || ((s1)->cmd == (s2)->cmd && \
-((s1)->rq_dev < (s2)->rq_dev || (((s1)->rq_dev == (s2)->rq_dev && \
-(s1)->sector < (s2)->sector)))))
-
-/*
- * These will have to be changed to be aware of different buffer
- * sizes etc.. It actually needs a major cleanup.
- */
-#ifdef IDE_DRIVER
-#define SECTOR_MASK ((BLOCK_SIZE >> 9) - 1)
-#else
-#define SECTOR_MASK (blksize_size[MAJOR_NR] &&     \
-	blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] ? \
-	((blksize_size[MAJOR_NR][MINOR(CURRENT->rq_dev)] >> 9) - 1) :  \
-	((BLOCK_SIZE >> 9)  -  1))
-#endif /* IDE_DRIVER */
-
-#define SUBSECTOR(block) (CURRENT->current_nr_sectors > 0)
-
-#ifdef CONFIG_CDU31A
-extern int cdu31a_init(void);
-#endif CONFIG_CDU31A
-#ifdef CONFIG_MCD
-extern int mcd_init(void);
-#endif CONFIG_MCD
-#ifdef CONFIG_MCDX
-extern int mcdx_init(void);
-#endif CONFIG_MCDX
-#ifdef CONFIG_SBPCD
-extern int sbpcd_init(void);
-#endif CONFIG_SBPCD
-#ifdef CONFIG_AZTCD
-extern int aztcd_init(void);
-#endif CONFIG_AZTCD
-#ifdef CONFIG_CDU535
-extern int sony535_init(void);
-#endif CONFIG_CDU535
-#ifdef CONFIG_GSCD
-extern int gscd_init(void);
-#endif CONFIG_GSCD
-#ifdef CONFIG_CM206
-extern int cm206_init(void);
-#endif CONFIG_CM206
-#ifdef CONFIG_OPTCD
-extern int optcd_init(void);
-#endif CONFIG_OPTCD
-#ifdef CONFIG_SJCD
-extern int sjcd_init(void);
-#endif CONFIG_SJCD
-#ifdef CONFIG_BLK_DEV_HD
-extern int hd_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_IDE
-extern int ide_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_XD
-extern int xd_init(void);
-#endif
-
-extern void set_device_ro(kdev_t dev,int flag);
-
-extern int floppy_init(void);
-extern void rd_load(void);
-extern long rd_init(long mem_start, int length);
-extern int ramdisk_size;
-
-#define RO_IOCTLS(dev,where) \
-  case BLKROSET: if (!suser()) return -EACCES; \
-		 set_device_ro((dev),get_fs_long((long *) (where))); return 0; \
-  case BLKROGET: { int __err = verify_area(VERIFY_WRITE, (void *) (where), sizeof(long)); \
-		   if (!__err) put_fs_long(0!=is_read_only(dev),(long *) (where)); return __err; }
-		 
-#if defined(MAJOR_NR) || defined(IDE_DRIVER)
-
-/*
- * Add entries as needed.
- */
-
-#ifdef IDE_DRIVER
-
-#define DEVICE_NR(device)	(MINOR(device) >> PARTN_BITS)
-#define DEVICE_ON(device)	/* nothing */
-#define DEVICE_OFF(device)	/* nothing */
-
-#elif (MAJOR_NR == MEM_MAJOR)
-
-/* ram disk */
-#define DEVICE_NAME "ramdisk"
-#define DEVICE_REQUEST do_rd_request
-#define DEVICE_NR(device) (MINOR(device) & 7)
-#define DEVICE_ON(device) 
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == FLOPPY_MAJOR)
-
-static void floppy_off(unsigned int nr);
-
-#define DEVICE_NAME "floppy"
-#define DEVICE_INTR do_floppy
-#define DEVICE_REQUEST do_fd_request
-#define DEVICE_NR(device) ( (MINOR(device) & 3) | ((MINOR(device) & 0x80 ) >> 5 ))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device) floppy_off(DEVICE_NR(device))
-
-#elif (MAJOR_NR == HD_MAJOR)
-
-/* harddisk: timeout is 6 seconds.. */
-#define DEVICE_NAME "harddisk"
-#define DEVICE_INTR do_hd
-#define DEVICE_TIMEOUT HD_TIMER
-#define TIMEOUT_VALUE (6*HZ)
-#define DEVICE_REQUEST do_hd_request
-#define DEVICE_NR(device) (MINOR(device)>>6)
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == SCSI_DISK_MAJOR)
-
-#define DEVICE_NAME "scsidisk"
-#define DEVICE_INTR do_sd  
-#define TIMEOUT_VALUE (2*HZ)
-#define DEVICE_REQUEST do_sd_request
-#define DEVICE_NR(device) (MINOR(device) >> 4)
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == SCSI_TAPE_MAJOR)
-
-#define DEVICE_NAME "scsitape"
-#define DEVICE_INTR do_st  
-#define DEVICE_NR(device) (MINOR(device) & 0x7f)
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == SCSI_CDROM_MAJOR)
-
-#define DEVICE_NAME "CD-ROM"
-#define DEVICE_INTR do_sr
-#define DEVICE_REQUEST do_sr_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == XT_DISK_MAJOR)
-
-#define DEVICE_NAME "xt disk"
-#define DEVICE_REQUEST do_xd_request
-#define DEVICE_NR(device) (MINOR(device) >> 6)
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == CDU31A_CDROM_MAJOR)
-
-#define DEVICE_NAME "CDU31A"
-#define DEVICE_REQUEST do_cdu31a_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MITSUMI_CDROM_MAJOR)
-
-#define DEVICE_NAME "Mitsumi CD-ROM"
-/* #define DEVICE_INTR do_mcd */
-#define DEVICE_REQUEST do_mcd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MITSUMI_X_CDROM_MAJOR)
-
-#define DEVICE_NAME "Mitsumi CD-ROM"
-/* #define DEVICE_INTR do_mcdx */
-#define DEVICE_REQUEST do_mcdx_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #1"
-#define DEVICE_REQUEST do_sbpcd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM2_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #2"
-#define DEVICE_REQUEST do_sbpcd2_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM3_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #3"
-#define DEVICE_REQUEST do_sbpcd3_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM4_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #4"
-#define DEVICE_REQUEST do_sbpcd4_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == AZTECH_CDROM_MAJOR)
-
-#define DEVICE_NAME "Aztech CD-ROM"
-#define DEVICE_REQUEST do_aztcd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == CDU535_CDROM_MAJOR)
-
-#define DEVICE_NAME "SONY-CDU535"
-#define DEVICE_INTR do_cdu535
-#define DEVICE_REQUEST do_cdu535_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == GOLDSTAR_CDROM_MAJOR)
-
-#define DEVICE_NAME "Goldstar R420"
-#define DEVICE_REQUEST do_gscd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == CM206_CDROM_MAJOR)
-#define DEVICE_NAME "Philips/LMS cd-rom cm206"
-#define DEVICE_REQUEST do_cm206_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == OPTICS_CDROM_MAJOR)
-
-#define DEVICE_NAME "DOLPHIN 8000AT CD-ROM"
-#define DEVICE_REQUEST do_optcd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == SANYO_CDROM_MAJOR)
-
-#define DEVICE_NAME "Sanyo H94A CD-ROM"
-#define DEVICE_REQUEST do_sjcd_request
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#endif /* MAJOR_NR == whatever */
-
-#if (MAJOR_NR != SCSI_TAPE_MAJOR) && !defined(IDE_DRIVER)
-
-#ifndef CURRENT
-#define CURRENT (blk_dev[MAJOR_NR].current_request)
-#endif
-
-#define CURRENT_DEV DEVICE_NR(CURRENT->rq_dev)
-
-#ifdef DEVICE_INTR
-void (*DEVICE_INTR)(void) = NULL;
-#endif
-#ifdef DEVICE_TIMEOUT
-
-#define SET_TIMER \
-((timer_table[DEVICE_TIMEOUT].expires = jiffies + TIMEOUT_VALUE), \
-(timer_active |= 1<<DEVICE_TIMEOUT))
-
-#define CLEAR_TIMER \
-timer_active &= ~(1<<DEVICE_TIMEOUT)
-
-#define SET_INTR(x) \
-if ((DEVICE_INTR = (x)) != NULL) \
-	SET_TIMER; \
-else \
-	CLEAR_TIMER;
-
-#else
-
-#define SET_INTR(x) (DEVICE_INTR = (x))
-
-#endif /* DEVICE_TIMEOUT */
-
-static void (DEVICE_REQUEST)(void);
-
-#ifdef DEVICE_INTR
-#define CLEAR_INTR SET_INTR(NULL)
-#else
-#define CLEAR_INTR
-#endif
-
-#define INIT_REQUEST \
-	if (!CURRENT) {\
-		CLEAR_INTR; \
-		return; \
-	} \
-	if (MAJOR(CURRENT->rq_dev) != MAJOR_NR) \
-		panic(DEVICE_NAME ": request list destroyed"); \
-	if (CURRENT->bh) { \
-		if (!CURRENT->bh->b_lock) \
-			panic(DEVICE_NAME ": block not locked"); \
-	}
-
-#endif /* (MAJOR_NR != SCSI_TAPE_MAJOR) && !defined(IDE_DRIVER) */
-
-/* end_request() - SCSI devices have their own version */
-/*               - IDE drivers have their own copy too */
-
-#if ! SCSI_MAJOR(MAJOR_NR)
-
-#if defined(_IDE_CD_C) || defined(_TRITON_C) /* shares copy with ide.c */
-void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup);
-#else
-
-#ifdef IDE_DRIVER
-void ide_end_request(byte uptodate, ide_hwgroup_t *hwgroup) {
-	struct request *req = hwgroup->rq;
-#else
-static void end_request(int uptodate) {
-	struct request *req = CURRENT;
-#endif /* IDE_DRIVER */
-	struct buffer_head * bh;
-
-	req->errors = 0;
-	if (!uptodate) {
-		printk("end_request: I/O error, dev %s, sector %lu\n",
-			kdevname(req->rq_dev), req->sector);
-		req->nr_sectors--;
-		req->nr_sectors &= ~SECTOR_MASK;
-		req->sector += (BLOCK_SIZE / 512);
-		req->sector &= ~SECTOR_MASK;		
-	}
-
-	if ((bh = req->bh) != NULL) {
-		req->bh = bh->b_reqnext;
-		bh->b_reqnext = NULL;
-		bh->b_uptodate = uptodate;		
-		unlock_buffer(bh);
-		if ((bh = req->bh) != NULL) {
-			req->current_nr_sectors = bh->b_size >> 9;
-			if (req->nr_sectors < req->current_nr_sectors) {
-				req->nr_sectors = req->current_nr_sectors;
-				printk("end_request: buffer-list destroyed\n");
-			}
-			req->buffer = bh->b_data;
-			return;
-		}
-	}
-#ifdef IDE_DRIVER
-	hwgroup->rq = NULL;
-#else
-	DEVICE_OFF(req->rq_dev);
-	CURRENT = req->next;
-#endif /* IDE_DRIVER */
-	if (req->sem != NULL)
-		up(req->sem);
-	req->rq_status = RQ_INACTIVE;
-	wake_up(&wait_for_request);
-}
-#endif /* ndef _IDE_CD_C */
-#endif /* ! SCSI_MAJOR(MAJOR_NR) */
-
-#endif /* defined(MAJOR_NR) || defined(IDE_DRIVER) */
-
-#endif /* _BLK_H */