Remove the arm26 port

The arm26 port has been in a state where it was far from even compiling
for quite some time.

Ian Molton agreed with the removal.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

14 files changed, 8 insertions, 3509 deletions

diff --git a/drivers/acorn/README b/drivers/acorn/README
deleted file mode 100644
index d399c09ca61c..000000000000
--- a/drivers/acorn/README
+++ /dev/null
@@ -1 +0,0 @@
-Drivers for the ACORN "podule" ARM specific bus.
diff --git a/drivers/acorn/block/Kconfig b/drivers/acorn/block/Kconfig
deleted file mode 100644
index a0ff25ea439f..000000000000
--- a/drivers/acorn/block/Kconfig
+++ /dev/null
@@ -1,36 +0,0 @@
-#
-# Block device driver configuration
-#
-
-menu "Acorn-specific block devices"
-	depends on ARCH_ARC || ARCH_A5K
-
-config BLK_DEV_FD1772
-	tristate "Old Archimedes floppy (1772) support"
-	depends on ARCH_ARC || ARCH_A5K
-	help
-	  Support the floppy drive on the Acorn Archimedes (A300, A4x0, A540,
-	  R140 and R260) series of computers; it supports only 720K floppies
-	  at the moment. If you don't have one of these machines just answer
-	  N.
-
-config BLK_DEV_MFM
-	tristate "MFM harddisk support"
-	depends on ARCH_ARC || ARCH_A5K
-	help
-	  Support the MFM hard drives on the Acorn Archimedes both
-	  on-board the A4x0 motherboards and via the Acorn MFM podules.
-	  Drives up to 64MB are supported. If you haven't got one of these
-	  machines or drives just say N.
-
-config BLK_DEV_MFM_AUTODETECT
-	bool "Autodetect hard drive geometry"
-	depends on BLK_DEV_MFM
-	help
-	  If you answer Y, the MFM code will attempt to automatically detect
-	  the cylinders/heads/sectors count on your hard drive. WARNING: This
-	  sometimes doesn't work and it also does some dodgy stuff which
-	  potentially might damage your drive.
-
-endmenu
-
diff --git a/drivers/acorn/block/Makefile b/drivers/acorn/block/Makefile
deleted file mode 100644
index 38a9afe8e03f..000000000000
--- a/drivers/acorn/block/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for the Acorn block device drivers.
-#
-
-fd1772_mod-objs	:= fd1772.o fd1772dma.o
-mfmhd_mod-objs	:= mfmhd.o mfm.o
-
-obj-$(CONFIG_BLK_DEV_FD1772)	+= fd1772_mod.o
-obj-$(CONFIG_BLK_DEV_MFM)	+= mfmhd_mod.o
diff --git a/drivers/acorn/block/fd1772.c b/drivers/acorn/block/fd1772.c
deleted file mode 100644
index d7e18ce8dad9..000000000000
--- a/drivers/acorn/block/fd1772.c
+++ /dev/null
@@ -1,1604 +0,0 @@
-/*
- *  linux/kernel/arch/arm/drivers/block/fd1772.c
- *  Based on ataflop.c in the m68k Linux
- *  Copyright (C) 1993  Greg Harp
- *  Atari Support by Bjoern Brauel, Roman Hodek
- *  Archimedes Support by Dave Gilbert (linux@treblig.org)
- *
- *  Big cleanup Sep 11..14 1994 Roman Hodek:
- *   - Driver now works interrupt driven
- *   - Support for two drives; should work, but I cannot test that :-(
- *   - Reading is done in whole tracks and buffered to speed up things
- *   - Disk change detection and drive deselecting after motor-off
- *     similar to TOS
- *   - Autodetection of disk format (DD/HD); untested yet, because I
- *     don't have an HD drive :-(
- *
- *  Fixes Nov 13 1994 Martin Schaller:
- *   - Autodetection works now
- *   - Support for 5 1/4" disks
- *   - Removed drive type (unknown on atari)
- *   - Do seeks with 8 Mhz
- *
- *  Changes by Andreas Schwab:
- *   - After errors in multiple read mode try again reading single sectors
- *  (Feb 1995):
- *   - Clean up error handling
- *   - Set blk_size for proper size checking
- *   - Initialize track register when testing presence of floppy
- *   - Implement some ioctl's
- *
- *  Changes by Torsten Lang:
- *   - When probing the floppies we should add the FDC1772CMDADD_H flag since
- *     the FDC1772 will otherwise wait forever when no disk is inserted...
- *
- *  Things left to do:
- *   - Formatting
- *   - Maybe a better strategy for disk change detection (does anyone
- *     know one?)
- *   - There are some strange problems left: The strangest one is
- *     that, at least on my TT (4+4MB), the first 2 Bytes of the last
- *     page of the TT-Ram (!) change their contents (some bits get
- *     set) while a floppy DMA is going on. But there are no accesses
- *     to these memory locations from the kernel... (I tested that by
- *     making the page read-only). I cannot explain what's going on...
- *   - Sometimes the drive-change-detection stops to work. The
- *     function is still called, but the WP bit always reads as 0...
- *     Maybe a problem with the status reg mode or a timing problem.
- *     Note 10/12/94: The change detection now seems to work reliably.
- *     There is no proof, but I've seen no hang for a long time...
- *
- * ARCHIMEDES changes: (gilbertd@cs.man.ac.uk)
- *     26/12/95 - Changed all names starting with FDC to FDC1772
- *                Removed all references to clock speed of FDC - we're stuck with 8MHz
- *                Modified disk_type structure to remove HD formats
- *
- *      7/ 1/96 - Wrote FIQ code, removed most remaining atariisms
- *
- *     13/ 1/96 - Well I think its read a single sector; but there is a problem
- *                fd_rwsec_done which is called in FIQ mode starts another transfer
- *                off (in fd_rwsec) while still in FIQ mode.  Because its still in
- *                FIQ mode it can't service the DMA and loses data. So need to
- *                heavily restructure.
- *     14/ 1/96 - Found that the definitions of the register numbers of the
- *                FDC were multiplied by 2 in the header for the 16bit words
- *                of the atari so half the writes were going in the wrong place.
- *                Also realised that the FIQ entry didn't make any attempt to
- *                preserve registers or return correctly; now in assembler.
- *
- *     11/ 2/96 - Hmm - doesn't work on real machine.  Auto detect doesn't
- *                and hacking that past seems to wait forever - check motor
- *                being turned on.
- *
- *     17/ 2/96 - still having problems - forcing track to -1 when selecting
- *                new drives seems to allow it to read first few sectors
- *                but then we get solid hangs at apparently random places
- *                which change depending what is happening.
- *
- *      9/ 3/96 - Fiddled a lot of stuff around to move to kernel 1.3.35
- *                A lot of fiddling in DMA stuff. Having problems with it
- *                constnatly thinking its timeing out. Ah - its timeout
- *                was set to (6*HZ) rather than jiffies+(6*HZ).  Now giving
- *                duff data!
- *
- *      5/ 4/96 - Made it use the new IOC_ macros rather than *ioc
- *                Hmm - giving unexpected FIQ and then timeouts
- *     18/ 8/96 - Ran through indent -kr -i8
- *                Some changes to disc change detect; don't know how well it
- *                works.
- *     24/ 8/96 - Put all the track buffering code back in from the atari
- *                code - I wonder if it will still work... No :-)
- *                Still works if I turn off track buffering.
- *     25/ 8/96 - Changed the timer expires that I'd added back to be 
- *                jiffies + ....; and it all sprang to life! Got 2.8K/sec
- *                off a cp -r of a 679K disc (showed 94% cpu usage!)
- *                (PC gets 14.3K/sec - 0% CPU!) Hmm - hard drive corrupt!
- *                Also perhaps that compile was with cache off.
- *                changed cli in fd_readtrack_check to cliIF
- *                changed vmallocs to kmalloc (whats the difference!!)
- *                Removed the busy wait loop in do_fd_request and replaced
- *                by a routine on tq_immediate; only 11% cpu on a dd off the
- *                raw disc - but the speed is the same.
- *	1/ 9/96 - Idea (failed!) - set the 'disable spin-up sequence'
- *		  when we read the track if we know the motor is on; didn't
- *		  help - perhaps we have to do it in stepping as well.
- *		  Nope. Still doesn't help.
- *		  Hmm - what seems to be happening is that fd_readtrack_check
- *		  is never getting called. Its job is to terminate the read
- *		  just after we think we should have got the data; otherwise
- *		  the fdc takes 1 second to timeout; which is what's happening
- *		  Now I can see 'readtrack_timer' being set (which should do the
- *		  call); but it never seems to be called - hmm!
- *		  OK - I've moved the check to my tq_immediate code -
- *		  and it WORKS! 13.95K/second at 19% CPU.
- *		  I wish I knew why that timer didn't work.....
- *
- *     16/11/96 - Fiddled and frigged for 2.0.18
- *
- * DAG 30/01/99 - Started frobbing for 2.2.1
- * DAG 20/06/99 - A little more frobbing:
- *		  Included include/asm/uaccess.h for get_user/put_user
- *
- * DAG  1/09/00 - Dusted off for 2.4.0-test7
- *                MAX_SECTORS was name clashing so it is now FD1772_...
- *                Minor parameter, name layouts for 2.4.x differences
- */
-
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/timer.h>
-#include <linux/workqueue.h>
-#include <linux/fd.h>
-#include <linux/fd1772.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <linux/bitops.h>
-
-#include <asm/arch/oldlatches.h>
-#include <asm/dma.h>
-#include <asm/hardware.h>
-#include <asm/hardware/ioc.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/mach-types.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-
-/* Note: FD_MAX_UNITS could be redefined to 2 for the Atari (with
- * little additional rework in this file). But I'm not yet sure if
- * some other code depends on the number of floppies... (It is defined
- * in a public header!)
- */
-#if 0
-#undef FD_MAX_UNITS
-#define	FD_MAX_UNITS	2
-#endif
-
-/* Ditto worries for Arc - DAG */
-#define FD_MAX_UNITS 4
-#define TRACKBUFFER 0
-/*#define DEBUG*/
-
-#ifdef DEBUG
-#define DPRINT(a)	printk a
-#else
-#define DPRINT(a)
-#endif
-
-static struct request_queue *floppy_queue;
-
-#define MAJOR_NR FLOPPY_MAJOR
-#define FLOPPY_DMA 0
-#define DEVICE_NAME "floppy"
-#define QUEUE (floppy_queue)
-#define CURRENT elv_next_request(floppy_queue)
-
-/* Disk types: DD */
-static struct archy_disk_type {
-	const char *name;
-	unsigned spt;		/* sectors per track */
-	unsigned blocks;	/* total number of blocks */
-	unsigned stretch;	/* track doubling ? */
-} disk_type[] = {
-
-	{ "d360", 9, 720, 0 },			/* 360kB diskette */
-	{ "D360", 9, 720, 1 },			/* 360kb in 720kb drive */
-	{ "D720", 9, 1440, 0 },			/* 720kb diskette (DD) */
-	/*{ "D820", 10,1640, 0}, *//* DD disk with 82 tracks/10 sectors 
-	                              - DAG - can't see how type detect can distinguish this
-				      from 720K until it reads block 4 by which time its too late! */
-};
-
-#define	NUM_DISK_TYPES (sizeof(disk_type)/sizeof(*disk_type))
-
-/*
- * Maximum disk size (in kilobytes). This default is used whenever the
- * current disk size is unknown.
- */
-#define MAX_DISK_SIZE 720
-
-static struct gendisk *disks[FD_MAX_UNIT];
-
-/* current info on each unit */
-static struct archy_floppy_struct {
-	int connected;		/* !=0 : drive is connected */
-	int autoprobe;		/* !=0 : do autoprobe       */
-
-	struct archy_disk_type *disktype;	/* current type of disk */
-
-	int track;		/* current head position or -1
-				   * if unknown */
-	unsigned int steprate;	/* steprate setting */
-	unsigned int wpstat;	/* current state of WP signal
-				   * (for disk change detection) */
-} unit[FD_MAX_UNITS];
-
-/* DAG: On Arc we spin on a flag being cleared by fdc1772_comendhandler which
-   is an assembler routine */
-extern void fdc1772_comendhandler(void);	/* Actually doens't have these parameters - see fd1772.S */
-extern volatile int fdc1772_comendstatus;
-extern volatile int fdc1772_fdc_int_done;
-
-#define FDC1772BASE ((0x210000>>2)|0x80000000)
-
-#define FDC1772_READ(reg) inb(FDC1772BASE+(reg/2))
-
-/* DAG: You wouldn't be silly to ask why FDC1772_WRITE is a function rather
-   than the #def below - well simple - the #def won't compile - and I
-   don't understand why (__outwc not defined) */
-/* NOTE: Reg is 0,2,4,6 as opposed to 0,1,2,3 or 0,4,8,12 to keep compatibility
-   with the ST version of fd1772.h */
-/*#define FDC1772_WRITE(reg,val) outw(val,(reg+FDC1772BASE)); */
-void FDC1772_WRITE(int reg, unsigned char val)
-{
-	if (reg == FDC1772REG_CMD) {
-		DPRINT(("FDC1772_WRITE new command 0x%x @ %d\n", val,jiffies));
-		if (fdc1772_fdc_int_done) {
-			DPRINT(("FDC1772_WRITE: Hmm fdc1772_fdc_int_done true - resetting\n"));
-			fdc1772_fdc_int_done = 0;
-		};
-	};
-	outb(val, (reg / 2) + FDC1772BASE);
-};
-
-#define	FD1772_MAX_SECTORS	22
-
-unsigned char *DMABuffer;	/* buffer for writes */
-/*static unsigned long PhysDMABuffer; *//* physical address */
-/* DAG: On Arc we just go straight for the DMA buffer */
-#define PhysDMABuffer DMABuffer
-
-#ifdef TRACKBUFFER   
-unsigned char *TrackBuffer;       /* buffer for reads */
-#define PhysTrackBuffer TrackBuffer /* physical address */
-static int BufferDrive, BufferSide, BufferTrack;
-static int read_track;    /* non-zero if we are reading whole tracks */
-  
-#define SECTOR_BUFFER(sec)  (TrackBuffer + ((sec)-1)*512)
-#define IS_BUFFERED(drive,side,track) \
-    (BufferDrive == (drive) && BufferSide == (side) && BufferTrack == (track))
-#endif
-
-/*
- * These are global variables, as that's the easiest way to give
- * information to interrupts. They are the data used for the current
- * request.
- */
-static int SelectedDrive = 0;
-static int ReqCmd, ReqBlock;
-static int ReqSide, ReqTrack, ReqSector, ReqCnt;
-static int HeadSettleFlag = 0;
-static unsigned char *ReqData, *ReqBuffer;
-static int MotorOn = 0, MotorOffTrys;
-
-/* Synchronization of FDC1772 access. */
-static volatile int fdc_busy = 0;
-static DECLARE_WAIT_QUEUE_HEAD(fdc_wait);
-
-
-/* long req'd for set_bit --RR */
-static unsigned long changed_floppies = 0xff, fake_change = 0;
-#define	CHECK_CHANGE_DELAY	HZ/2
-
-/* DAG - increased to 30*HZ - not sure if this is the correct thing to do */
-#define	FD_MOTOR_OFF_DELAY	(10*HZ)
-#define	FD_MOTOR_OFF_MAXTRY	(10*20)
-
-#define FLOPPY_TIMEOUT		(6*HZ)
-#define RECALIBRATE_ERRORS	4	/* After this many errors the drive
-					 * will be recalibrated. */
-#define MAX_ERRORS		8	/* After this many errors the driver
-					 * will give up. */
-
-#define	START_MOTOR_OFF_TIMER(delay)				\
-	do {							\
-		motor_off_timer.expires = jiffies + (delay);	\
-		add_timer( &motor_off_timer );			\
-		MotorOffTrys = 0;				\
-	} while(0)
-
-#define	START_CHECK_CHANGE_TIMER(delay)				\
-	do {							\
-	        mod_timer(&fd_timer, jiffies + (delay));	\
-	} while(0)
-
-#define	START_TIMEOUT()						\
-	do {							\
-		mod_timer(&timeout_timer, jiffies+FLOPPY_TIMEOUT); \
-	} while(0)
-
-#define	STOP_TIMEOUT()						\
-	do {							\
-		del_timer( &timeout_timer );			\
-	} while(0)
-
-#define ENABLE_IRQ() enable_irq(FIQ_FD1772+64);
-
-#define DISABLE_IRQ() disable_irq(FIQ_FD1772+64);
-
-static void fd1772_checkint(void);
-
-DECLARE_WORK(fd1772_tq, (void *)fd1772_checkint, NULL);
-/*
- * The driver is trying to determine the correct media format
- * while Probing is set. fd_rwsec_done() clears it after a
- * successful access.
- */
-static int Probing = 0;
-
-/* This flag is set when a dummy seek is necessary to make the WP
- * status bit accessible.
- */
-static int NeedSeek = 0;
-
-
-/***************************** Prototypes *****************************/
-
-static void fd_select_side(int side);
-static void fd_select_drive(int drive);
-static void fd_deselect(void);
-static void fd_motor_off_timer(unsigned long dummy);
-static void check_change(unsigned long dummy);
-static void floppy_irqconsequencehandler(void);
-static void fd_error(void);
-static void do_fd_action(int drive);
-static void fd_calibrate(void);
-static void fd_calibrate_done(int status);
-static void fd_seek(void);
-static void fd_seek_done(int status);
-static void fd_rwsec(void);
-#ifdef TRACKBUFFER   
-static void fd_readtrack_check( unsigned long dummy );  
-#endif
-static void fd_rwsec_done(int status);
-static void fd_times_out(unsigned long dummy);
-static void finish_fdc(void);
-static void finish_fdc_done(int dummy);
-static void floppy_off(unsigned int nr);
-static void setup_req_params(int drive);
-static void redo_fd_request(void);
-static int fd_ioctl(struct inode *inode, struct file *filp, unsigned int
-		    cmd, unsigned long param);
-static void fd_probe(int drive);
-static int fd_test_drive_present(int drive);
-static void config_types(void);
-static int floppy_open(struct inode *inode, struct file *filp);
-static int floppy_release(struct inode *inode, struct file *filp);
-static void do_fd_request(struct request_queue *);
-
-/************************* End of Prototypes **************************/
-
-static DEFINE_TIMER(motor_off_timer, fd_motor_off_timer, 0, 0);
-
-#ifdef TRACKBUFFER
-static DEFINE_TIMER(readtrack_timer, fd_readtrack_check, 0, 0);
-#endif
-
-static DEFINE_TIMER(timeout_timer, fd_times_out, 0, 0);
-
-static DEFINE_TIMER(fd_timer, check_change, 0, 0);
-
-/* DAG: Haven't got a clue what this is? */
-int stdma_islocked(void)
-{
-	return 0;
-};
-
-/* Select the side to use. */
-
-static void fd_select_side(int side)
-{
-	oldlatch_aupdate(LATCHA_SIDESEL, side ? 0 : LATCHA_SIDESEL);
-}
-
-
-/* Select a drive, update the FDC1772's track register
- */
-
-static void fd_select_drive(int drive)
-{
-#ifdef DEBUG
-	printk("fd_select_drive:%d\n", drive);
-#endif
-	/* Hmm - nowhere do we seem to turn the motor on - I'm going to do it here! */
-	oldlatch_aupdate(LATCHA_MOTOR | LATCHA_INUSE, 0);
-
-	if (drive == SelectedDrive)
-		return;
-
-	oldlatch_aupdate(LATCHA_FDSELALL, 0xf - (1 << drive));
-
-	/* restore track register to saved value */
-	FDC1772_WRITE(FDC1772REG_TRACK, unit[drive].track);
-	udelay(25);
-
-	SelectedDrive = drive;
-}
-
-
-/* Deselect both drives. */
-
-static void fd_deselect(void)
-{
-	unsigned long flags;
-
-	DPRINT(("fd_deselect\n"));
-
-	oldlatch_aupdate(LATCHA_FDSELALL | LATCHA_MOTOR | LATCHA_INUSE, 0xf | LATCHA_MOTOR | LATCHA_INUSE);
-
-	SelectedDrive = -1;
-}
-
-
-/* This timer function deselects the drives when the FDC1772 switched the
- * motor off. The deselection cannot happen earlier because the FDC1772
- * counts the index signals, which arrive only if one drive is selected.
- */
-
-static void fd_motor_off_timer(unsigned long dummy)
-{
-	unsigned long flags;
-	unsigned char status;
-	int delay;
-
-	del_timer(&motor_off_timer);
-
-	if (SelectedDrive < 0)
-		/* no drive selected, needn't deselect anyone */
-		return;
-
-	save_flags(flags);
-	cli();
-
-	if (fdc_busy)		/* was stdma_islocked */
-		goto retry;
-
-	status = FDC1772_READ(FDC1772REG_STATUS);
-
-	if (!(status & 0x80)) {
-		/*
-		 * motor already turned off by FDC1772 -> deselect drives
-		 * In actual fact its this deselection which turns the motor
-		 * off on the Arc, since the motor control is actually on
-		 * Latch A
-		 */
-		DPRINT(("fdc1772: deselecting in fd_motor_off_timer\n"));
-		fd_deselect();
-		MotorOn = 0;
-		restore_flags(flags);
-		return;
-	}
-	/* not yet off, try again */
-
-retry:
-	restore_flags(flags);
-	/* Test again later; if tested too often, it seems there is no disk
-	 * in the drive and the FDC1772 will leave the motor on forever (or,
-	 * at least until a disk is inserted). So we'll test only twice
-	 * per second from then on...
-	 */
-	delay = (MotorOffTrys < FD_MOTOR_OFF_MAXTRY) ?
-	    (++MotorOffTrys, HZ / 20) : HZ / 2;
-	START_MOTOR_OFF_TIMER(delay);
-}
-
-
-/* This function is repeatedly called to detect disk changes (as good
- * as possible) and keep track of the current state of the write protection.
- */
-
-static void check_change(unsigned long dummy)
-{
-	static int drive = 0;
-
-	unsigned long flags;
-	int stat;
-
-	if (fdc_busy)
-		return;		/* Don't start poking about if the fdc is busy */
-
-	return;			/* let's just forget it for the mo DAG */
-
-	if (++drive > 1 || !unit[drive].connected)
-		drive = 0;
-
-	save_flags(flags);
-	cli();
-
-	if (!stdma_islocked()) {
-		stat = !!(FDC1772_READ(FDC1772REG_STATUS) & FDC1772STAT_WPROT);
-
-		/* The idea here is that if the write protect line has changed then
-		the disc must have changed */
-		if (stat != unit[drive].wpstat) {
-			DPRINT(("wpstat[%d] = %d\n", drive, stat));
-			unit[drive].wpstat = stat;
-			set_bit(drive, &changed_floppies);
-		}
-	}
-	restore_flags(flags);
-
-	START_CHECK_CHANGE_TIMER(CHECK_CHANGE_DELAY);
-}
-
-
-/* Handling of the Head Settling Flag: This flag should be set after each
- * seek operation, because we don't use seeks with verify.
- */
-
-static inline void set_head_settle_flag(void)
-{
-	HeadSettleFlag = FDC1772CMDADD_E;
-}
-
-static inline int get_head_settle_flag(void)
-{
-	int tmp = HeadSettleFlag;
-	HeadSettleFlag = 0;
-	return (tmp);
-}
-
-
-
-
-/* General Interrupt Handling */
-
-static inline void copy_buffer(void *from, void *to)
-{
-	ulong *p1 = (ulong *) from, *p2 = (ulong *) to;
-	int cnt;
-
-	for (cnt = 512 / 4; cnt; cnt--)
-		*p2++ = *p1++;
-}
-
-static void (*FloppyIRQHandler) (int status) = NULL;
-
-static void floppy_irqconsequencehandler(void)
-{
-	unsigned char status;
-	void (*handler) (int);
-
-	fdc1772_fdc_int_done = 0;
-
-	handler = FloppyIRQHandler;
-	FloppyIRQHandler = NULL;
-
-	if (handler) {
-		nop();
-		status = (unsigned char) fdc1772_comendstatus;
-		DPRINT(("FDC1772 irq, status = %02x handler = %08lx\n", (unsigned int) status, (unsigned long) handler));
-		handler(status);
-	} else {
-		DPRINT(("FDC1772 irq, no handler status=%02x\n", fdc1772_comendstatus));
-	}
-	DPRINT(("FDC1772 irq: end of floppy_irq\n"));
-}
-
-
-/* Error handling: If some error happened, retry some times, then
- * recalibrate, then try again, and fail after MAX_ERRORS.
- */
-
-static void fd_error(void)
-{
-	printk("FDC1772: fd_error\n");
-	/*panic("fd1772: fd_error"); *//* DAG tmp */
-	if (!CURRENT)
-		return;
-	CURRENT->errors++;
-	if (CURRENT->errors >= MAX_ERRORS) {
-		printk("fd%d: too many errors.\n", SelectedDrive);
-		end_request(CURRENT, 0);
-	} else if (CURRENT->errors == RECALIBRATE_ERRORS) {
-		printk("fd%d: recalibrating\n", SelectedDrive);
-		if (SelectedDrive != -1)
-			unit[SelectedDrive].track = -1;
-	}
-	redo_fd_request();
-}
-
-
-
-#define	SET_IRQ_HANDLER(proc) do { FloppyIRQHandler = (proc); } while(0)
-
-
-/* do_fd_action() is the general procedure for a fd request: All
- * required parameter settings (drive select, side select, track
- * position) are checked and set if needed. For each of these
- * parameters and the actual reading or writing exist two functions:
- * one that starts the setting (or skips it if possible) and one
- * callback for the "done" interrupt. Each done func calls the next
- * set function to propagate the request down to fd_rwsec_done().
- */
-
-static void do_fd_action(int drive)
-{
-	struct request *req;
-	DPRINT(("do_fd_action unit[drive].track=%d\n", unit[drive].track));
-
-#ifdef TRACKBUFFER
-repeat:
-
-	if (IS_BUFFERED( drive, ReqSide, ReqTrack )) {
-		req = CURRENT;
-		if (ReqCmd == READ) {
-			copy_buffer( SECTOR_BUFFER(ReqSector), ReqData );
-			if (++ReqCnt < req->current_nr_sectors) {
-				/* read next sector */
-				setup_req_params( drive );
-				goto repeat;
-			} else {
-				/* all sectors finished */
-				req->nr_sectors -= req->current_nr_sectors;
-				req->sector += req->current_nr_sectors;
-				end_request(req, 1);
-				redo_fd_request();
-				return;
-			}
-		} else {
-			/* cmd == WRITE, pay attention to track buffer
-			 * consistency! */
-			copy_buffer( ReqData, SECTOR_BUFFER(ReqSector) );
-		}
-	}
-#endif
-
-	if (SelectedDrive != drive) {
-		/*unit[drive].track = -1; DAG */
-		fd_select_drive(drive);
-	};
-
-
-	if (unit[drive].track == -1)
-		fd_calibrate();
-	else if (unit[drive].track != ReqTrack << unit[drive].disktype->stretch)
-		fd_seek();
-	else
-		fd_rwsec();
-}
-
-
-/* Seek to track 0 if the current track is unknown */
-
-static void fd_calibrate(void)
-{
-	DPRINT(("fd_calibrate\n"));
-	if (unit[SelectedDrive].track >= 0) {
-		fd_calibrate_done(0);
-		return;
-	}
-	DPRINT(("fd_calibrate (after track compare)\n"));
-	SET_IRQ_HANDLER(fd_calibrate_done);
-	/* we can't verify, since the speed may be incorrect */
-	FDC1772_WRITE(FDC1772REG_CMD, FDC1772CMD_RESTORE | unit[SelectedDrive].steprate);
-
-	NeedSeek = 1;
-	MotorOn = 1;
-	START_TIMEOUT();
-	/* wait for IRQ */
-}
-
-
-static void fd_calibrate_done(int status)
-{
-	DPRINT(("fd_calibrate_done()\n"));
-	STOP_TIMEOUT();
-
-	/* set the correct speed now */
-	if (status & FDC1772STAT_RECNF) {
-		printk("fd%d: restore failed\n", SelectedDrive);
-		fd_error();
-	} else {
-		unit[SelectedDrive].track = 0;
-		fd_seek();
-	}
-}
-
-
-/* Seek the drive to the requested track. The drive must have been
- * calibrated at some point before this.
- */
-
-static void fd_seek(void)
-{
-	unsigned long flags;
-	DPRINT(("fd_seek() to track %d (unit[SelectedDrive].track=%d)\n", ReqTrack,
-		unit[SelectedDrive].track));
-	if (unit[SelectedDrive].track == ReqTrack <<
-	    unit[SelectedDrive].disktype->stretch) {
-		fd_seek_done(0);
-		return;
-	}
-	FDC1772_WRITE(FDC1772REG_DATA, ReqTrack <<
-		      unit[SelectedDrive].disktype->stretch);
-	udelay(25);
-	save_flags(flags);
-	clf();
-	SET_IRQ_HANDLER(fd_seek_done);
-	FDC1772_WRITE(FDC1772REG_CMD, FDC1772CMD_SEEK | unit[SelectedDrive].steprate |
-		/* DAG */
-		(MotorOn?FDC1772CMDADD_H:0));
-
-	restore_flags(flags);
-	MotorOn = 1;
-	set_head_settle_flag();
-	START_TIMEOUT();
-	/* wait for IRQ */
-}
-
-
-static void fd_seek_done(int status)
-{
-	DPRINT(("fd_seek_done()\n"));
-	STOP_TIMEOUT();
-
-	/* set the correct speed */
-	if (status & FDC1772STAT_RECNF) {
-		printk("fd%d: seek error (to track %d)\n",
-		       SelectedDrive, ReqTrack);
-		/* we don't know exactly which track we are on now! */
-		unit[SelectedDrive].track = -1;
-		fd_error();
-	} else {
-		unit[SelectedDrive].track = ReqTrack <<
-		    unit[SelectedDrive].disktype->stretch;
-		NeedSeek = 0;
-		fd_rwsec();
-	}
-}
-
-
-/* This does the actual reading/writing after positioning the head
- * over the correct track.
- */
-
-#ifdef TRACKBUFFER
-static int MultReadInProgress = 0;
-#endif
-
-
-static void fd_rwsec(void)
-{
-	unsigned long paddr, flags;
-	unsigned int rwflag, old_motoron;
-	unsigned int track;
-
-	DPRINT(("fd_rwsec(), Sec=%d, Access=%c\n", ReqSector, ReqCmd == WRITE ? 'w' : 'r'));
-	if (ReqCmd == WRITE) {
-		/*cache_push( (unsigned long)ReqData, 512 ); */
-		paddr = (unsigned long) ReqData;
-		rwflag = 0x100;
-	} else {
-		paddr = (unsigned long) PhysDMABuffer;
-#ifdef TRACKBUFFER
-		if (read_track)
-			paddr = (unsigned long)PhysTrackBuffer;
-#endif
-		rwflag = 0;
-	}
-
-	DPRINT(("fd_rwsec() before sidesel rwflag=%d sec=%d trk=%d\n", rwflag,
-		ReqSector, FDC1772_READ(FDC1772REG_TRACK)));
-	fd_select_side(ReqSide);
-
-	/*DPRINT(("fd_rwsec() before start sector \n")); */
-	/* Start sector of this operation */
-#ifdef TRACKBUFFER
-	FDC1772_WRITE( FDC1772REG_SECTOR, !read_track ? ReqSector : 1 );
-#else
-	FDC1772_WRITE( FDC1772REG_SECTOR, ReqSector );
-#endif
-
-	/* Cheat for track if stretch != 0 */
-	if (unit[SelectedDrive].disktype->stretch) {
-		track = FDC1772_READ(FDC1772REG_TRACK);
-		FDC1772_WRITE(FDC1772REG_TRACK, track >>
-			      unit[SelectedDrive].disktype->stretch);
-	}
-	udelay(25);
-
-	DPRINT(("fd_rwsec() before setup DMA \n"));
-	/* Setup DMA - Heavily modified by DAG */
-	save_flags(flags);
-	clf();
-	disable_dma(FLOPPY_DMA);
-	set_dma_mode(FLOPPY_DMA, rwflag ? DMA_MODE_WRITE : DMA_MODE_READ);
-	set_dma_addr(FLOPPY_DMA, (long) paddr);		/* DAG - changed from Atari specific */
-#ifdef TRACKBUFFER
-	set_dma_count(FLOPPY_DMA,(!read_track ? 1 : unit[SelectedDrive].disktype->spt)*512);
-#else
-	set_dma_count(FLOPPY_DMA, 512);		/* Block/sector size - going to have to change */
-#endif
-	SET_IRQ_HANDLER(fd_rwsec_done);
-	/* Turn on dma int */
-	enable_dma(FLOPPY_DMA);
-	/* Now give it something to do */
-	FDC1772_WRITE(FDC1772REG_CMD, (rwflag ? (FDC1772CMD_WRSEC | FDC1772CMDADD_P) : 
-#ifdef TRACKBUFFER
-	      (FDC1772CMD_RDSEC | (read_track ? FDC1772CMDADD_M : 0) |
-	      /* Hmm - the idea here is to stop the FDC spinning the disc
-	      up when we know that we already still have it spinning */
-	      (MotorOn?FDC1772CMDADD_H:0))
-#else
-	      FDC1772CMD_RDSEC
-#endif
-		));
-
-	restore_flags(flags);
-	DPRINT(("fd_rwsec() after DMA setup flags=0x%08x\n", flags));
-	/*sti(); *//* DAG - Hmm */
-	/* Hmm - should do something DAG */
-	old_motoron = MotorOn;
-	MotorOn = 1;
-	NeedSeek = 1;
-
-	/* wait for interrupt */
-
-#ifdef TRACKBUFFER
-	if (read_track) {
-		/*
-		 * If reading a whole track, wait about one disk rotation and
-		 * then check if all sectors are read. The FDC will even
-		 * search for the first non-existant sector and need 1 sec to
-		 * recognise that it isn't present :-(
-		 */
-		/* 1 rot. + 5 rot.s if motor was off  */
-		mod_timer(&readtrack_timer, jiffies + HZ/5 + (old_motoron ? 0 : HZ));
-		DPRINT(("Setting readtrack_timer to %d @ %d\n",
-			readtrack_timer.expires,jiffies));
-		MultReadInProgress = 1;
-	}
-#endif
-
-	/*DPRINT(("fd_rwsec() before START_TIMEOUT \n")); */
-	START_TIMEOUT();
-	/*DPRINT(("fd_rwsec() after START_TIMEOUT \n")); */
-}
-
-
-#ifdef TRACKBUFFER
-
-static void fd_readtrack_check(unsigned long dummy)
-{
-	unsigned long flags, addr;
-	extern unsigned char *fdc1772_dataaddr;
-
-	DPRINT(("fd_readtrack_check @ %d\n",jiffies));
-
-	save_flags(flags);
-	clf();
-
-	del_timer( &readtrack_timer );
-
-	if (!MultReadInProgress) {
-		/* This prevents a race condition that could arise if the
-		 * interrupt is triggered while the calling of this timer
-		 * callback function takes place. The IRQ function then has
-		 * already cleared 'MultReadInProgress'  when control flow
-		 * gets here.
-		 */
-		restore_flags(flags);
-		return;
-	}
-
-	/* get the current DMA address */
-	addr=(unsigned long)fdc1772_dataaddr; /* DAG - ? */
-	DPRINT(("fd_readtrack_check: addr=%x PhysTrackBuffer=%x\n",addr,PhysTrackBuffer));
-
-	if (addr >= (unsigned int)PhysTrackBuffer + unit[SelectedDrive].disktype->spt*512) {
-		/* already read enough data, force an FDC interrupt to stop
-		 * the read operation
-		 */
-		SET_IRQ_HANDLER( NULL );
-		restore_flags(flags);
-		DPRINT(("fd_readtrack_check(): done\n"));
-		FDC1772_WRITE( FDC1772REG_CMD, FDC1772CMD_FORCI );
-		udelay(25);
-
-		/* No error until now -- the FDC would have interrupted
-		 * otherwise!
-		 */
-		fd_rwsec_done( 0 );
-	} else {
-		/* not yet finished, wait another tenth rotation */
-		restore_flags(flags);
-		DPRINT(("fd_readtrack_check(): not yet finished\n"));
-		readtrack_timer.expires = jiffies + HZ/5/10;
-		add_timer( &readtrack_timer );
-	}
-}
-
-#endif
-
-static void fd_rwsec_done(int status)
-{
-	unsigned int track;
-
-	DPRINT(("fd_rwsec_done() status=%d @ %d\n", status,jiffies));
-
-#ifdef TRACKBUFFER
-	if (read_track && !MultReadInProgress)
-		return;
-
-	MultReadInProgress = 0;
-
-	STOP_TIMEOUT();
-
-	if (read_track)
-		del_timer( &readtrack_timer );
-#endif
-
-
-	/* Correct the track if stretch != 0