Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Revert "unexport bio_{,un}map_user"
  relay: fix subbuf_splice_actor() adding too many pages
  The ps2esdi driver was marked as BROKEN more than two years ago due to being

3 files changed, 0 insertions, 1090 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index b6d230b3209..0d1d2133d9b 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -44,16 +44,6 @@ config MAC_FLOPPY
 	  If you have a SWIM-3 (Super Woz Integrated Machine 3; from Apple)
 	  floppy controller, say Y here. Most commonly found in PowerMacs.
 
-config BLK_DEV_PS2
-	tristate "PS/2 ESDI hard disk support"
-	depends on MCA && MCA_LEGACY && BROKEN
-	help
-	  Say Y here if you have a PS/2 machine with a MCA bus and an ESDI
-	  hard disk.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ps2esdi.
-
 config AMIGA_Z2RAM
 	tristate "Amiga Zorro II ramdisk support"
 	depends on ZORRO
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 01c972415cb..5e584306be9 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_ATARI_FLOPPY)	+= ataflop.o
 obj-$(CONFIG_AMIGA_Z2RAM)	+= z2ram.o
 obj-$(CONFIG_BLK_DEV_RAM)	+= brd.o
 obj-$(CONFIG_BLK_DEV_LOOP)	+= loop.o
-obj-$(CONFIG_BLK_DEV_PS2)	+= ps2esdi.o
 obj-$(CONFIG_BLK_DEV_XD)	+= xd.o
 obj-$(CONFIG_BLK_CPQ_DA)	+= cpqarray.o
 obj-$(CONFIG_BLK_CPQ_CISS_DA)  += cciss.o
diff --git a/drivers/block/ps2esdi.c b/drivers/block/ps2esdi.c
deleted file mode 100644
index 3c796e23625..00000000000
--- a/drivers/block/ps2esdi.c
+++ /dev/null
@@ -1,1079 +0,0 @@
-/* ps2esdi driver based on assembler code by Arindam Banerji,
-   written by Peter De Schrijver */
-/* Reassuring note to IBM : This driver was NOT developed by vice-versa
-   engineering the PS/2's BIOS */
-/* Dedicated to Wannes, Tofke, Ykke, Godot, Killroy and all those 
-   other lovely fish out there... */
-/* This code was written during the long and boring WINA 
-   elections 1994 */
-/* Thanks to Arindam Banerij for giving me the source of his driver */
-/* This code may be freely distributed and modified in any way, 
-   as long as these notes remain intact */
-
-/*  Revised: 05/07/94 by Arindam Banerji (axb@cse.nd.edu) */
-/*  Revised: 09/08/94 by Peter De Schrijver (stud11@cc4.kuleuven.ac.be)
-   Thanks to Arindam Banerij for sending me the docs of the adapter */
-
-/* BA Modified for ThinkPad 720 by Boris Ashkinazi */
-/*                    (bash@vnet.ibm.com) 08/08/95 */
-
-/* Modified further for ThinkPad-720C by Uri Blumenthal */
-/*                    (uri@watson.ibm.com) Sep 11, 1995 */
-
-/* TODO : 
-   + Timeouts
-   + Get disk parameters
-   + DMA above 16MB
-   + reset after read/write error
- */
-
-#define DEVICE_NAME "PS/2 ESDI"
-
-#include <linux/major.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/genhd.h>
-#include <linux/ps2esdi.h>
-#include <linux/blkdev.h>
-#include <linux/mca-legacy.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/module.h>
-#include <linux/hdreg.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/mca_dma.h>
-#include <asm/uaccess.h>
-
-#define PS2ESDI_IRQ 14
-#define MAX_HD 2
-#define MAX_RETRIES 5
-#define MAX_16BIT 65536
-#define ESDI_TIMEOUT   0xf000
-#define ESDI_STAT_TIMEOUT 4
-
-#define TYPE_0_CMD_BLK_LENGTH 2
-#define TYPE_1_CMD_BLK_LENGTH 4
-
-static void reset_ctrl(void);
-
-static int ps2esdi_geninit(void);
-
-static void do_ps2esdi_request(struct request_queue * q);
-
-static void ps2esdi_readwrite(int cmd, struct request *req);
-
-static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
-u_short cyl, u_short head, u_short sector, u_short length, u_char drive);
-
-static int ps2esdi_out_cmd_blk(u_short * cmd_blk);
-
-static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode);
-
-static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id);
-static void (*current_int_handler) (u_int) = NULL;
-static void ps2esdi_normal_interrupt_handler(u_int);
-static void ps2esdi_initial_reset_int_handler(u_int);
-static void ps2esdi_geometry_int_handler(u_int);
-static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo);
-
-static int ps2esdi_read_status_words(int num_words, int max_words, u_short * buffer);
-
-static void dump_cmd_complete_status(u_int int_ret_code);
-
-static void ps2esdi_get_device_cfg(void);
-
-static void ps2esdi_reset_timer(unsigned long unused);
-
-static u_int dma_arb_level;		/* DMA arbitration level */
-
-static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int);
-
-static int no_int_yet;
-static int ps2esdi_drives;
-static u_short io_base;
-static DEFINE_TIMER(esdi_timer, ps2esdi_reset_timer, 0, 0);
-static int reset_status;
-static int ps2esdi_slot = -1;
-static int tp720esdi = 0;	/* Is it Integrated ESDI of ThinkPad-720? */
-static int intg_esdi = 0;       /* If integrated adapter */
-struct ps2esdi_i_struct {
-	unsigned int head, sect, cyl, wpcom, lzone, ctl;
-};
-static DEFINE_SPINLOCK(ps2esdi_lock);
-static struct request_queue *ps2esdi_queue;
-static struct request *current_req;
-
-#if 0
-#if 0				/* try both - I don't know which one is better... UB */
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
-{
-	{4, 48, 1553, 0, 0, 0},
-	{0, 0, 0, 0, 0, 0}};
-#else
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
-{
-	{64, 32, 161, 0, 0, 0},
-	{0, 0, 0, 0, 0, 0}};
-#endif
-#endif
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
-{
-	{0, 0, 0, 0, 0, 0},
-	{0, 0, 0, 0, 0, 0}};
-
-static struct block_device_operations ps2esdi_fops =
-{
-	.owner		= THIS_MODULE,
-	.getgeo		= ps2esdi_getgeo,
-};
-
-static struct gendisk *ps2esdi_gendisk[2];
-
-/* initialization routine called by ll_rw_blk.c   */
-static int __init ps2esdi_init(void)
-{
-
-	int error = 0;
-
-	/* register the device - pass the name and major number */
-	if (register_blkdev(PS2ESDI_MAJOR, "ed"))
-		return -EBUSY;
-
-	/* set up some global information - indicating device specific info */
-	ps2esdi_queue = blk_init_queue(do_ps2esdi_request, &ps2esdi_lock);
-	if (!ps2esdi_queue) {
-		unregister_blkdev(PS2ESDI_MAJOR, "ed");
-		return -ENOMEM;
-	}
-
-	/* some minor housekeeping - setup the global gendisk structure */
-	error = ps2esdi_geninit();
-	if (error) {
-		printk(KERN_WARNING "PS2ESDI: error initialising"
-			" device, releasing resources\n");
-		unregister_blkdev(PS2ESDI_MAJOR, "ed");
-		blk_cleanup_queue(ps2esdi_queue);
-		return error;
-	}
-	return 0;
-}				/* ps2esdi_init */
-
-#ifndef MODULE
-
-module_init(ps2esdi_init);
-
-#else
-
-static int cyl[MAX_HD] = {-1,-1};
-static int head[MAX_HD] = {-1, -1};
-static int sect[MAX_HD] = {-1, -1};
-
-module_param(tp720esdi, bool, 0);
-module_param_array(cyl, int, NULL, 0);
-module_param_array(head, int, NULL, 0);
-module_param_array(sect, int, NULL, 0);
-MODULE_LICENSE("GPL");
-
-int init_module(void) {
-	int drive;
-
-	for(drive = 0; drive < MAX_HD; drive++) {
-	        struct ps2esdi_i_struct *info = &ps2esdi_info[drive];
-
-        	if (cyl[drive] != -1) {
-		  	info->cyl = info->lzone = cyl[drive];
-			info->wpcom = 0;
-		}
-        	if (head[drive] != -1) {
-			info->head = head[drive];
-			info->ctl = (head[drive] > 8 ? 8 : 0);
-		}
-        	if (sect[drive] != -1) info->sect = sect[drive];
-	}
-	return ps2esdi_init();
-}
-
-void
-cleanup_module(void) {
-	int i;
-	if(ps2esdi_slot) {
-		mca_mark_as_unused(ps2esdi_slot);
-		mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
-	}
-	release_region(io_base, 4);
-	free_dma(dma_arb_level);
-	free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
-	unregister_blkdev(PS2ESDI_MAJOR, "ed");
-	blk_cleanup_queue(ps2esdi_queue);
-	for (i = 0; i < ps2esdi_drives; i++) {
-		del_gendisk(ps2esdi_gendisk[i]);
-		put_disk(ps2esdi_gendisk[i]);
-	}
-}
-#endif /* MODULE */
-
-/* handles boot time command line parameters */
-void __init tp720_setup(char *str, int *ints)
-{
-	/* no params, just sets the tp720esdi flag if it exists */
-
-	printk("%s: TP 720 ESDI flag set\n", DEVICE_NAME);
-	tp720esdi = 1;
-}
-
-void __init ed_setup(char *str, int *ints)
-{
-	int hdind = 0;
-
-	/* handles 3 parameters only - corresponding to
-	   1. Number of cylinders
-	   2. Number of heads
-	   3. Sectors/track
-	 */
-
-	if (ints[0] != 3)
-		return;
-
-	/* print out the information - seen at boot time */
-	printk("%s: ints[0]=%d ints[1]=%d ints[2]=%d ints[3]=%d\n",
-	       DEVICE_NAME, ints[0], ints[1], ints[2], ints[3]);
-
-	/* set the index into device specific information table */
-	if (ps2esdi_info[0].head != 0)
-		hdind = 1;
-
-	/* set up all the device information */
-	ps2esdi_info[hdind].head = ints[2];
-	ps2esdi_info[hdind].sect = ints[3];
-	ps2esdi_info[hdind].cyl = ints[1];
-	ps2esdi_info[hdind].wpcom = 0;
-	ps2esdi_info[hdind].lzone = ints[1];
-	ps2esdi_info[hdind].ctl = (ints[2] > 8 ? 8 : 0);
-#if 0				/* this may be needed for PS2/Mod.80, but it hurts ThinkPad! */
-	ps2esdi_drives = hdind + 1;	/* increment index for the next time */
-#endif
-}				/* ed_setup */
-
-static int ps2esdi_getinfo(char *buf, int slot, void *d)
-{
-	int len = 0;
-
-	len += sprintf(buf + len, "DMA Arbitration Level: %d\n",
-		       dma_arb_level);
-	len += sprintf(buf + len, "IO Port: %x\n", io_base);
-	len += sprintf(buf + len, "IRQ: 14\n");
-	len += sprintf(buf + len, "Drives: %d\n", ps2esdi_drives);
-
-	return len;
-}
-
-/* ps2 esdi specific initialization - called thru the gendisk chain */
-static int __init ps2esdi_geninit(void)
-{
-	/*
-	   The first part contains the initialization code
-	   for the ESDI disk subsystem.  All we really do
-	   is search for the POS registers of the controller
-	   to do some simple setup operations.  First, we
-	   must ensure that the controller is installed,
-	   enabled, and configured as PRIMARY.  Then we must
-	   determine the DMA arbitration level being used by
-	   the controller so we can handle data transfer
-	   operations properly.  If all of this works, then
-	   we will set the INIT_FLAG to a non-zero value.
-	 */
-
-	int slot = 0, i, reset_start, reset_end;
-	u_char status;
-	unsigned short adapterID;
-	int error = 0;
-
-	if ((slot = mca_find_adapter(INTG_ESDI_ID, 0)) != MCA_NOTFOUND) {
-		adapterID = INTG_ESDI_ID;
-		printk("%s: integrated ESDI adapter found in slot %d\n",
-		       DEVICE_NAME, slot+1);
-#ifndef MODULE
-		mca_set_adapter_name(slot, "PS/2 Integrated ESDI");
-#endif
-	} else if ((slot = mca_find_adapter(NRML_ESDI_ID, 0)) != -1) {
-		adapterID = NRML_ESDI_ID;
-		printk("%s: normal ESDI adapter found in slot %d\n",
-		       DEVICE_NAME, slot+1);
-		mca_set_adapter_name(slot, "PS/2 ESDI");
-	} else {
-		return -ENODEV;
-	}
-
-	ps2esdi_slot = slot;
-	mca_mark_as_used(slot);
-	mca_set_adapter_procfn(slot, (MCA_ProcFn) ps2esdi_getinfo, NULL);
-
-	/* Found the slot - read the POS register 2 to get the necessary
-	   configuration and status information.  POS register 2 has the
-	   following information :
-	   Bit           Function
-	   7             reserved = 0
-	   6             arbitration method
-	   0 - fairness enabled
-	   1 - fairness disabled, linear priority assignment
-	   5-2           arbitration level
-	   1             alternate address
-	   1              alternate address
-	   0 - use addresses 0x3510 - 0x3517
-	   0             adapter enable
-	 */
-
-	status = mca_read_stored_pos(slot, 2);
-	/* is it enabled ? */
-	if (!(status & STATUS_ENABLED)) {
-		printk("%s: ESDI adapter disabled\n", DEVICE_NAME);
-		error = -ENODEV;
-		goto err_out1;
-	}
-	/* try to grab IRQ, and try to grab a slow IRQ if it fails, so we can
-	   share with the SCSI driver */
-	if (request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
-		  IRQF_DISABLED | IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk)
-	    && request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
-			   IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk)
-	    ) {
-		printk("%s: Unable to get IRQ %d\n", DEVICE_NAME, PS2ESDI_IRQ);
-		error = -EBUSY;
-		goto err_out1;
-	}
-	if (status & STATUS_ALTERNATE)
-		io_base = ALT_IO_BASE;
-	else
-		io_base = PRIMARY_IO_BASE;
-
-	if (!request_region(io_base, 4, "ed")) {
-		printk(KERN_WARNING"Unable to request region 0x%x\n", io_base);
-		error = -EBUSY;
-		goto err_out2;
-	}
-	/* get the dma arbitration level */
-	dma_arb_level = (status >> 2) & 0xf;
-
-	/* BA */
-	printk("%s: DMA arbitration level : %d\n",
-	       DEVICE_NAME, dma_arb_level);
-
-	LITE_ON;
-	current_int_handler = ps2esdi_initial_reset_int_handler;
-	reset_ctrl();
-	reset_status = 0;
-	reset_start = jiffies;
-	while (!reset_status) {
-		init_timer(&esdi_timer);
-		esdi_timer.expires = jiffies + HZ;
-		esdi_timer.data = 0;
-		add_timer(&esdi_timer);
-		sleep_on(&ps2esdi_int);
-	}
-	reset_end = jiffies;
-	LITE_OFF;
-	printk("%s: reset interrupt after %d jiffies,  %u.%02u secs\n",
-	       DEVICE_NAME, reset_end - reset_start, (reset_end - reset_start) / HZ,
-	       (reset_end - reset_start) % HZ);
-
-
-	/* Integrated ESDI Disk and Controller has only one drive! */
-	if (adapterID == INTG_ESDI_ID) {/* if not "normal" PS2 ESDI adapter */
-		ps2esdi_drives = 1;	/* then we have only one physical disk! */		intg_esdi = 1;
-	}
-
-
-
-	/* finally this part sets up some global data structures etc. */
-
-	ps2esdi_get_device_cfg();
-
-	/* some annoyance in the above routine returns TWO drives?
-	 Is something else happining in the background?
-	 Regaurdless we fix the # of drives again. AJK */
-	/* Integrated ESDI Disk and Controller has only one drive! */
-	if (adapterID == INTG_ESDI_ID)	/* if not "normal" PS2 ESDI adapter */
-		ps2esdi_drives = 1;	/* Not three or two, ONE DAMNIT! */
-
-	current_int_handler = ps2esdi_normal_interrupt_handler;
-
-	if (request_dma(dma_arb_level, "ed") !=0) {
-		printk(KERN_WARNING "PS2ESDI: Can't request dma-channel %d\n"
-			,(int) dma_arb_level);
-		error = -EBUSY;
-		goto err_out3;
-	}
-	blk_queue_max_sectors(ps2esdi_queue, 128);
-
-	error = -ENOMEM;
-	for (i = 0; i < ps2esdi_drives; i++) {
-		struct gendisk *disk = alloc_disk(64);
-		if (!disk)
-			goto err_out4;
-		disk->major = PS2ESDI_MAJOR;
-		disk->first_minor = i<<6;
-		sprintf(disk->disk_name, "ed%c", 'a'+i);
-		disk->fops = &ps2esdi_fops;
-		ps2esdi_gendisk[i] = disk;
-	}
-
-	for (i = 0; i < ps2esdi_drives; i++) {
-		struct gendisk *disk = ps2esdi_gendisk[i];
-		set_capacity(disk, ps2esdi_info[i].head * ps2esdi_info[i].sect *
-				ps2esdi_info[i].cyl);
-		disk->queue = ps2esdi_queue;
-		disk->private_data = &ps2esdi_info[i];
-		add_disk(disk);
-	}
-	return 0;
-err_out4:
-	while (i--)
-		put_disk(ps2esdi_gendisk[i]);
-err_out3:
-	release_region(io_base, 4);
-err_out2:
-	free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
-err_out1:
-	if(ps2esdi_slot) {
-		mca_mark_as_unused(ps2esdi_slot);
-		mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
-	}
-	return error;
-}
-
-static void __init ps2esdi_get_device_cfg(void)
-{
-	u_short cmd_blk[TYPE_0_CMD_BLK_LENGTH];
-
-	/*BA */ printk("%s: Drive 0\n", DEVICE_NAME);
-	current_int_handler = ps2esdi_geometry_int_handler;
-	cmd_blk[0] = CMD_GET_DEV_CONFIG | 0x600;
-	cmd_blk[1] = 0;
-	no_int_yet = TRUE;
-	ps2esdi_out_cmd_blk(cmd_blk);
-	if (no_int_yet)
-		sleep_on(&ps2esdi_int);
-
-	if (ps2esdi_drives > 1) {
-		printk("%s: Drive 1\n", DEVICE_NAME);	/*BA */
-		cmd_blk[0] = CMD_GET_DEV_CONFIG | (1 << 5) | 0x600;
-		cmd_blk[1] = 0;
-		no_int_yet = TRUE;
-		ps2esdi_out_cmd_blk(cmd_blk);
-		if (no_int_yet)
-			sleep_on(&ps2esdi_int);
-	}			/* if second physical drive is present */
-	return;
-}
-
-/* strategy routine that handles most of the IO requests */
-static void do_ps2esdi_request(struct request_queue * q)
-{
-	struct request *req;
-	/* since, this routine is called with interrupts cleared - they 
-	   must be before it finishes  */
-
-	req = elv_next_request(q);
-	if (!req)
-		return;
-
-#if 0
-	printk("%s:got request. device : %s command : %d  sector : %ld count : %ld, buffer: %p\n",
-	       DEVICE_NAME,
-	       req->rq_disk->disk_name,
-	       req->cmd, req->sector,
-	       req->current_nr_sectors, req->buffer);
-#endif
-
-	/* check for above 16Mb dmas */
-	if (isa_virt_to_bus(req->buffer + req->current_nr_sectors * 512) > 16 * MB) {
-		printk("%s: DMA above 16MB not supported\n", DEVICE_NAME);
-		end_request(req, FAIL);
-		return;
-	}
-
-	if (req->sector+req->current_nr_sectors > get_capacity(req->rq_disk)) {
-		printk("Grrr. error. ps2esdi_drives: %d, %llu %llu\n",
-		    ps2esdi_drives, req->sector,
-		    (unsigned long long)get_capacity(req->rq_disk));
-		end_request(req, FAIL);
-		return;
-	}
-
-	switch (rq_data_dir(req)) {
-	case READ:
-		ps2esdi_readwrite(READ, req);
-		break;
-	case WRITE:
-		ps2esdi_readwrite(WRITE, req);
-		break;
-	default:
-		printk("%s: Unknown command\n", req->rq_disk->disk_name);
-		end_request(req, FAIL);
-		break;
-	}		/* handle different commands */
-}				/* main strategy routine */
-
-/* resets the ESDI adapter */
-static void reset_ctrl(void)
-{
-
-	u_long expire;
-	u_short status;
-
-	/* enable interrupts on the controller */
-	status = inb(ESDI_INTRPT);
-	outb((status & 0xe0) | ATT_EOI, ESDI_ATTN);	/* to be sure we don't have
-							   any interrupt pending... */
-	outb_p(CTRL_ENABLE_INTR, ESDI_CONTROL);
-
-	/* read the ESDI status port - if the controller is not busy,
-	   simply do a soft reset (fast) - otherwise we'll have to do a
-	   hard (slow) reset.  */
-	if (!(inb_p(ESDI_STATUS) & STATUS_BUSY)) {
-		/*BA */ printk("%s: soft reset...\n", DEVICE_NAME);
-		outb_p(CTRL_SOFT_RESET, ESDI_ATTN);
-	}
-	/* soft reset */ 
-	else {
-		/*BA */
-		printk("%s: hard reset...\n", DEVICE_NAME);
-		outb_p(CTRL_HARD_RESET, ESDI_CONTROL);
-		expire = jiffies + 2*HZ;
-		while (time_before(jiffies, expire));
-		outb_p(1, ESDI_CONTROL);
-	}			/* hard reset */
-
-
-}				/* reset the controller */
-
-/* called by the strategy routine to handle read and write requests */
-static void ps2esdi_readwrite(int cmd, struct request *req)
-{
-	struct ps2esdi_i_struct *p = req->rq_disk->private_data;
-	unsigned block = req->sector;
-	unsigned count = req->current_nr_sectors;
-	int drive = p - ps2esdi_info;
-	u_short track, head, cylinder, sector;
-	u_short cmd_blk[TYPE_1_CMD_BLK_LENGTH];
-
-	/* do some relevant arithmatic */
-	track = block / p->sect;
-	head = track % p->head;
-	cylinder = track / p->head;
-	sector = block % p->sect;
-
-#if 0
-	printk("%s: cyl=%d head=%d sect=%d\n", DEVICE_NAME, cylinder, head, sector);
-#endif
-	/* call the routine that actually fills out a command block */
-	ps2esdi_fill_cmd_block
-	    (cmd_blk,
-	     (cmd == READ) ? CMD_READ : CMD_WRITE,
-	     cylinder, head, sector, count, drive);
-
-	/* send the command block to the controller */
-	current_req = req;
-	spin_unlock_irq(&ps2esdi_lock);
-	if (ps2esdi_out_cmd_blk(cmd_blk)) {
-		spin_lock_irq(&ps2esdi_lock);
-		printk("%s: Controller failed\n", DEVICE_NAME);
-		if ((++req->errors) >= MAX_RETRIES)
-			end_request(req, FAIL);
-	}
-	/* check for failure to put out the command block */ 
-	else {
-		spin_lock_irq(&ps2esdi_lock);
-#if 0
-		printk("%s: waiting for xfer\n", DEVICE_NAME);
-#endif
-		/* turn disk lights on */
-		LITE_ON;
-	}
-
-}				/* ps2esdi_readwrite */
-
-/* fill out the command block */
-static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
- u_short cyl, u_short head, u_short sector, u_short length, u_char drive)
-{
-
-	cmd_blk[0] = (drive << 5) | cmd;
-	cmd_blk[1] = length;
-	cmd_blk[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
-	cmd_blk[3] = (cyl & 0x3E0) >> 5;
-
-}				/* fill out the command block */
-
-/* write a command block to the controller */
-static int ps2esdi_out_cmd_blk(u_short * cmd_blk)
-{
-
-	int i;
-	unsigned long jif;
-	u_char status;
-
-	/* enable interrupts */
-	outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-
-	/* do not write to the controller, if it is busy */
-	for (jif = jiffies + ESDI_STAT_TIMEOUT;
-		time_after(jif, jiffies) &&
-			(inb(ESDI_STATUS) & STATUS_BUSY); )
-		;
-
-#if 0
-	printk("%s: i(1)=%ld\n", DEVICE_NAME, jif);
-#endif
-
-	/* if device is still busy - then just time out */
-	if (inb(ESDI_STATUS) & STATUS_BUSY) {
-		printk("%s: ps2esdi_out_cmd timed out (1)\n", DEVICE_NAME);
-		return ERROR;
-	}			/* timeout ??? */
-	/* Set up the attention register in the controller */
-	outb(((*cmd_blk) & 0xE0) | 1, ESDI_ATTN);
-
-#if 0
-	printk("%s: sending %d words to controller\n", DEVICE_NAME, (((*cmd_blk) >> 14) + 1) << 1);
-#endif
-
-	/* one by one send each word out */
-	for (i = (((*cmd_blk) >> 14) + 1) << 1; i; i--) {
-		status = inb(ESDI_STATUS);
-		for (jif = jiffies + ESDI_STAT_TIMEOUT;
-		     time_after(jif, jiffies) && (status & STATUS_BUSY) &&
-		   (status & STATUS_CMD_INF); status = inb(ESDI_STATUS));
-		if ((status & (STATUS_BUSY | STATUS_CMD_INF)) == STATUS_BUSY) {
-#if 0
-			printk("%s: sending %04X\n", DEVICE_NAME, *cmd_blk);
-#endif
-			outw(*cmd_blk++, ESDI_CMD_INT);
-		} else {
-			printk("%s: ps2esdi_out_cmd timed out while sending command (status=%02X)\n",
-			       DEVICE_NAME, status);
-			return ERROR;
-		}
-	}			/* send all words out */
-	return OK;
-}				/* send out the commands */
-
-
-/* prepare for dma - do all the necessary setup */
-static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode)
-{
-	unsigned long flags = claim_dma_lock();
-
-	mca_disable_dma(dma_arb_level);
-
-	mca_set_dma_addr(dma_arb_level, isa_virt_to_bus(buffer));
-
-	mca_set_dma_count(dma_arb_level, length * 512 / 2);
-
-	mca_set_dma_mode(dma_arb_level, dma_xmode);
-
-	mca_enable_dma(dma_arb_level);
-
-	release_dma_lock(flags);
-
-}				/* prepare for dma */
-
-
-
-static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id)
-{
-	u_int int_ret_code;
-
-	if (inb(ESDI_STATUS) & STATUS_INTR) {
-		int_ret_code = inb(ESDI_INTRPT);
-		if (current_int_handler) {
-			/* Disable adapter interrupts till processing is finished */
-			outb(CTRL_DISABLE_INTR, ESDI_CONTROL);
-			current_int_handler(int_ret_code);
-		} else
-			printk("%s: help ! No interrupt handler.\n", DEVICE_NAME);
-	} else {
-		return IRQ_NONE;
-	}
-	return IRQ_HANDLED;
-}
-
-static void ps2esdi_initial_reset_int_handler(u_int int_ret_code)
-{
-
-	switch (int_ret_code & 0xf) {
-	case INT_RESET:
-		/*BA */
-		printk("%s: initial reset completed.\n", DEVICE_NAME);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		wake_up(&ps2esdi_int);
-		break;
-	case INT_ATTN_ERROR:
-		printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
-		       int_ret_code);
-		printk("%s: status: %02x\n", DEVICE_NAME, inb(ESDI_STATUS));
-		break;
-	default:
-		printk("%s: initial reset handler received interrupt: %02X\n",
-		       DEVICE_NAME, int_ret_code);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		break;
-	}
-	outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-}
-
-
-static void ps2esdi_geometry_int_handler(u_int int_ret_code)
-{
-	u_int status, drive_num;
-	unsigned long rba;
-	int i;
-
-	drive_num = int_ret_code >> 5;
-	switch (int_ret_code & 0xf) {
-	case INT_CMD_COMPLETE:
-		for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
-		if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
-			printk("%s: timeout reading status word\n", DEVICE_NAME);
-			outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-			break;
-		}
-		status = inw(ESDI_STT_INT);
-		if ((status & 0x1F) == CMD_GET_DEV_CONFIG) {
-#define REPLY_WORDS 5		/* we already read word 0 */
-			u_short reply[REPLY_WORDS];
-
-			if (ps2esdi_read_status_words((status >> 8) - 1, REPLY_WORDS, reply)) {
-				/*BA */
-				printk("%s: Device Configuration Status for drive %u\n",
-				       DEVICE_NAME, drive_num);
-
-				printk("%s: Spares/cyls: %u", DEVICE_NAME, reply[0] >> 8);
-
-				printk
-				    ("Config bits: %s%s%s%s%s\n",
-				     (reply[0] & CONFIG_IS) ? "Invalid Secondary, " : "",
-				     ((reply[0] & CONFIG_ZD) && !(reply[0] & CONFIG_IS))
-				 ? "Zero Defect, " : "Defects Present, ",
-				     (reply[0] & CONFIG_SF) ? "Skewed Format, " : "",
-				     (reply[0] & CONFIG_FR) ? "Removable, " : "Non-Removable, ",
-				     (reply[0] & CONFIG_RT) ? "No Retries" : "Retries");
-
-				rba = reply[1] | ((unsigned long) reply[2] << 16);
-				printk("%s: Number of RBA's: %lu\n", DEVICE_NAME, rba);
-
-				printk("%s: Physical number of cylinders: %u, Sectors/Track: %u, Heads: %u\n",
-				       DEVICE_NAME, reply[3], reply[4] >> 8, reply[4] & 0xff);
-
-				if (!ps2esdi_info[drive_num].head) {
-					ps2esdi_info[drive_num].head = 64;
-					ps2esdi_info[drive_num].sect = 32;
-					ps2esdi_info[drive_num].cyl = rba / (64 * 32);
-					ps2esdi_info[drive_num].wpcom = 0;
-					ps2esdi_info[drive_num].lzone = ps2esdi_info[drive_num].cyl;
-					ps2esdi_info[drive_num].ctl = 8;
-					if (tp720esdi) {	/* store the retrieved parameters */
-						ps2esdi_info[0].head = reply[4] & 0Xff;
-						ps2esdi_info[0].sect = reply[4] >> 8;
-						ps2esdi_info[0].cyl = reply[3];
-						ps2esdi_info[0].wpcom = 0;
-						ps2esdi_info[0].lzone = reply[3];
-					} else {
-						if (!intg_esdi)
-							ps2esdi_drives++;
-					}
-				}
-#ifdef OBSOLETE
-				if (!ps2esdi_info[drive_num].head) {
-					ps2esdi_info[drive_num].head = reply[4] & 0Xff;
-					ps2esdi_info[drive_num].sect = reply[4] >> 8;
-					ps2esdi_info[drive_num].cyl = reply[3];
-					ps2esdi_info[drive_num].wpcom = 0;
-					ps2esdi_info[drive_num].lzone = reply[3];
-					if (tp720esdi) {	/* store the retrieved parameters */
-						ps2esdi_info[0].head = reply[4] & 0Xff;
-						ps2esdi_info[0].sect = reply[4] >> 8;
-						ps2esdi_info[0].cyl = reply[3];
-						ps2esdi_info[0].wpcom = 0;
-						ps2esdi_info[0].lzone = reply[3];
-					} else {
-						ps2esdi_drives++;
-					}
-				}
-#endif
-
-			} else
-				printk("%s: failed while getting device config\n", DEVICE_NAME);
-#undef REPLY_WORDS
-		} else
-			printk("%s: command %02X unknown by geometry handler\n",
-			       DEVICE_NAME, status & 0x1f);
-
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		break;
-
-	case INT_ATTN_ERROR:
-		printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
-		       int_ret_code);
-		printk("%s: Device not available\n", DEVICE_NAME);
-		break;
-	case INT_CMD_ECC:
-	case INT_CMD_RETRY:
-	case INT_CMD_ECC_RETRY:
-	case INT_CMD_WARNING:
-	case INT_CMD_ABORT:
-	case INT_CMD_FAILED:
-	case INT_DMA_ERR:
-	case INT_CMD_BLK_ERR:
-		/*BA */ printk("%s: Whaa. Error occurred...\n", DEVICE_NAME);
-		dump_cmd_complete_status(int_ret_code);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		break;
-	default:
-		printk("%s: Unknown interrupt reason: %02X\n",
-		       DEVICE_NAME, int_ret_code & 0xf);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		break;
-	}
-
-	wake_up(&ps2esdi_int);
-	no_int_yet = FALSE;
-	outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-
-}
-
-static void ps2esdi_normal_interrupt_handler(u_int int_ret_code)
-{
-	unsigned long flags;
-	u_int status;
-	u_int ending;
-	int i;
-
-	switch (int_ret_code & 0x0f) {
-	case INT_TRANSFER_REQ:
-		ps2esdi_prep_dma(current_req->buffer,
-				 current_req->current_nr_sectors,
-		    (rq_data_dir(current_req) == READ)
-		    ? MCA_DMA_MODE_16 | MCA_DMA_MODE_WRITE | MCA_DMA_MODE_XFER
-		    : MCA_DMA_MODE_16 | MCA_DMA_MODE_READ);
-		outb(CTRL_ENABLE_DMA | CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = -1;
-		break;
-
-	case INT_ATTN_ERROR:
-		printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
-		       int_ret_code);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = FAIL;
-		break;
-
-	case INT_CMD_COMPLETE:
-		for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
-		if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
-			printk("%s: timeout reading status word\n", DEVICE_NAME);
-			outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-			outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-			if ((++current_req->errors) >= MAX_RETRIES)
-				ending = FAIL;
-			else
-				ending = -1;
-			break;
-		}
-		status = inw(ESDI_STT_INT);
-		switch (status & 0x1F) {
-		case (CMD_READ & 0xff):
-		case (CMD_WRITE & 0xff):
-			LITE_OFF;
-			outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-			outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-			ending = SUCCES;
-			break;
-		default:
-			printk("%s: interrupt for unknown command %02X\n",
-			       DEVICE_NAME, status & 0x1f);
-			outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-			outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-			ending = -1;
-			break;
-		}
-		break;
-	case INT_CMD_ECC:
-	case INT_CMD_RETRY:
-	case INT_CMD_ECC_RETRY:
-		LITE_OFF;
-		dump_cmd_complete_status(int_ret_code);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = SUCCES;
-		break;
-	case INT_CMD_WARNING:
-	case INT_CMD_ABORT:
-	case INT_CMD_FAILED:
-	case INT_DMA_ERR:
-		LITE_OFF;
-		dump_cmd_complete_status(int_ret_code);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		if ((++current_req->errors) >= MAX_RETRIES)
-			ending = FAIL;
-		else
-			ending = -1;
-		break;
-
-	case INT_CMD_BLK_ERR:
-		dump_cmd_complete_status(int_ret_code);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = FAIL;
-		break;
-
-	case INT_CMD_FORMAT:
-		printk("%s: huh ? Who issued this format command ?\n"
-		       ,DEVICE_NAME);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = -1;
-		break;
-
-	case INT_RESET:
-		/* BA printk("%s: reset completed.\n", DEVICE_NAME) */ ;
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = -1;
-		break;
-
-	default:
-		printk("%s: Unknown interrupt reason: %02X\n",
-		       DEVICE_NAME, int_ret_code & 0xf);
-		outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		ending = -1;
-		break;
-	}
-	if(ending != -1) {
-		spin_lock_irqsave(&ps2esdi_lock, flags);
-		end_request(current_req, ending);
-		current_req = NULL;
-		do_ps2esdi_request(ps2esdi_queue);
-		spin_unlock_irqrestore(&ps2esdi_lock, flags);
-	}
-}				/* handle interrupts */
-
-
-
-static int ps2esdi_read_status_words(int num_words,
-				     int max_words,
-				     u_short * buffer)
-{
-	int i;
-
-	for (; max_words && num_words; max_words--, num_words--, buffer++) {
-		for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
-		if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
-			printk("%s: timeout reading status word\n", DEVICE_NAME);
-			return FAIL;
-		}
-		*buffer = inw(ESDI_STT_INT);
-	}
-	return SUCCES;
-}
-
-
-
-
-static void dump_cmd_complete_status(u_int int_ret_code)
-{
-#define WAIT_FOR_STATUS \
-  for(i=ESDI_TIMEOUT;i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL);i--); \
-    if(!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { \
-    printk("%s: timeout reading status word\n",DEVICE_NAME); \
-    return; \
-    }
-
-	int i, word_count;
-	u_short stat_word;
-	u_long rba;
-
-	printk("%s: Device: %u, interrupt ID: %02X\n",
-	       DEVICE_NAME, int_ret_code >> 5,
-	       int_ret_code & 0xf);
-
-	WAIT_FOR_STATUS;
-	stat_word = inw(ESDI_STT_INT);
-	word_count = (stat_word >> 8) - 1;
-	printk("%s: %u status words, command: %02X\n", DEVICE_NAME, word_count,
-	       stat_word & 0xff);
-
-	if (word_count--) {
-		WAIT_FOR_STATUS;
-		stat_word = inw(ESDI_STT_INT);
-		printk("%s: command status code: %02X, command error code: %02X\n",
-		       DEVICE_NAME, stat_word >> 8, stat_word & 0xff);
-	}
-	if (word_count--) {
-		WAIT_FOR_STATUS;
-		stat_word = inw(ESDI_STT_INT);
-		printk("%s: device error code: %s%s%s%s%s,%02X\n", DEVICE_NAME,
-		       (stat_word & 0x1000) ? "Ready, " : "Not Ready, ",
-		  (stat_word & 0x0800) ? "Selected, " : "Not Selected, ",
-		       (stat_word & 0x0400) ? "Write Fault, " : "",
-		       (stat_word & 0x0200) ? "Track 0, " : "",
-		(stat_word & 0x0100) ? "Seek or command complete, " : "",
-		       stat_word >> 8);
-	}
-	if (word_count--) {
-		WAIT_FOR_STATUS;
-		stat_word = inw(ESDI_STT_INT);
-		printk("%s: Blocks to do: %u", DEVICE_NAME, stat_word);
-	}
-	if (word_count -= 2) {
-		WAIT_FOR_STATUS;
-		rba = inw(ESDI_STT_INT);
-		WAIT_FOR_STATUS;
-		rba |= inw(ESDI_STT_INT) << 16;
-		printk(", Last Cyl: %u Head: %u Sector: %u\n",
-		       (u_short) ((rba & 0x1ff80000) >> 11),
-		 (u_short) ((rba & 0x7E0) >> 5), (u_short) (rba & 0x1f));
-	} else
-		printk("\n");
-
-	if (word_count--) {
-		WAIT_FOR_STATUS;
-		stat_word = inw(ESDI_STT_INT);
-		printk("%s: Blocks required ECC: %u", DEVICE_NAME, stat_word);
-	}
-	printk("\n");
-
-#undef WAIT_FOR_STATUS
-
-}
-
-static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
-	struct ps2esdi_i_struct *p = bdev->bd_disk->private_data;
-
-	geo->heads = p->head;
-	geo->sectors = p->sect;
-	geo->cylinders = p->cyl;
-	return 0;
-}
-
-static void ps2esdi_reset_timer(unsigned long unused)
-{
-
-	int status;
-
-	status = inb(ESDI_INTRPT);
-	if ((status & 0xf) == INT_RESET) {
-		outb((status & 0xe0) | ATT_EOI, ESDI_ATTN);
-		outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
-		reset_status = 1;
-	}
-	wake_up(&ps2esdi_int);
-}