remove ide-scsi

As planed, this removes ide-scsi.

The 2.6 kernel supports direct writing to ide CD drives, which
eliminates the need for ide-scsi. ide-scsi has been unmaintained and
marked as deprecated.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James.Bottomley@HansenPartnership.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

4 files changed, 4 insertions, 862 deletions

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index c9f21e3d4ea..937945e471d 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -185,23 +185,6 @@ config BLK_DEV_IDETAPE
 	  To compile this driver as a module, choose M here: the
 	  module will be called ide-tape.
 
-config BLK_DEV_IDESCSI
-	tristate "SCSI emulation support (DEPRECATED)"
-	depends on SCSI
-	select IDE_ATAPI
-	---help---
-	  WARNING: ide-scsi is no longer needed for cd writing applications!
-	  The 2.6 kernel supports direct writing to ide-cd, which eliminates
-	  the need for ide-scsi + the entire scsi stack just for writing a
-	  cd. The new method is more efficient in every way.
-
-	  This will provide SCSI host adapter emulation for IDE ATAPI devices,
-	  and will allow you to use a SCSI device driver instead of a native
-	  ATAPI driver.
-
-	  If both this SCSI emulation and native ATAPI support are compiled
-	  into the kernel, the native support will be used.
-
 config BLK_DEV_IDEACPI
 	bool "IDE ACPI support"
 	depends on ACPI
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 152d4aa9354..b7322976d2b 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -21,7 +21,7 @@ config SCSI
 	  You also need to say Y here if you have a device which speaks
 	  the SCSI protocol.  Examples of this include the parallel port
 	  version of the IOMEGA ZIP drive, USB storage devices, Fibre
-	  Channel, FireWire storage and the IDE-SCSI emulation driver.
+	  Channel, and FireWire storage.
 
 	  To compile this driver as a module, choose M here and read
 	  <file:Documentation/scsi/scsi.txt>.
@@ -101,9 +101,9 @@ config CHR_DEV_OSST
 	---help---
 	  The OnStream SC-x0 SCSI tape drives cannot be driven by the
 	  standard st driver, but instead need this special osst driver and
-	  use the  /dev/osstX char device nodes (major 206).  Via usb-storage
-	  and ide-scsi, you may be able to drive the USB-x0 and DI-x0 drives
-	  as well.  Note that there is also a second generation of OnStream
+	  use the  /dev/osstX char device nodes (major 206).  Via usb-storage,
+	  you may be able to drive the USB-x0 and DI-x0 drives as well.
+	  Note that there is also a second generation of OnStream
 	  tape drives (ADR-x0) that supports the standard SCSI-2 commands for
 	  tapes (QIC-157) and can be driven by the standard driver st.
 	  For more information, you may have a look at the SCSI-HOWTO
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 1410697257c..7461eb09a03 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -105,7 +105,6 @@ obj-$(CONFIG_SCSI_GDTH)		+= gdth.o
 obj-$(CONFIG_SCSI_INITIO)	+= initio.o
 obj-$(CONFIG_SCSI_INIA100)	+= a100u2w.o
 obj-$(CONFIG_SCSI_QLOGICPTI)	+= qlogicpti.o
-obj-$(CONFIG_BLK_DEV_IDESCSI)	+= ide-scsi.o
 obj-$(CONFIG_SCSI_MESH)		+= mesh.o
 obj-$(CONFIG_SCSI_MAC53C94)	+= mac53c94.o
 obj-$(CONFIG_BLK_DEV_3W_XXXX_RAID) += 3w-xxxx.o
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
deleted file mode 100644
index c24140aff8e..00000000000
--- a/drivers/scsi/ide-scsi.c
+++ /dev/null
@@ -1,840 +0,0 @@
-/*
- * Copyright (C) 1996-1999  Gadi Oxman <gadio@netvision.net.il>
- * Copyright (C) 2004-2005  Bartlomiej Zolnierkiewicz
- */
-
-/*
- * Emulation of a SCSI host adapter for IDE ATAPI devices.
- *
- * With this driver, one can use the Linux SCSI drivers instead of the
- * native IDE ATAPI drivers.
- *
- * Ver 0.1   Dec  3 96   Initial version.
- * Ver 0.2   Jan 26 97   Fixed bug in cleanup_module() and added emulation
- *                        of MODE_SENSE_6/MODE_SELECT_6 for cdroms. Thanks
- *                        to Janos Farkas for pointing this out.
- *                       Avoid using bitfields in structures for m68k.
- *                       Added Scatter/Gather and DMA support.
- * Ver 0.4   Dec  7 97   Add support for ATAPI PD/CD drives.
- *                       Use variable timeout for each command.
- * Ver 0.5   Jan  2 98   Fix previous PD/CD support.
- *                       Allow disabling of SCSI-6 to SCSI-10 transformation.
- * Ver 0.6   Jan 27 98   Allow disabling of SCSI command translation layer
- *                        for access through /dev/sg.
- *                       Fix MODE_SENSE_6/MODE_SELECT_6/INQUIRY translation.
- * Ver 0.7   Dec 04 98   Ignore commands where lun != 0 to avoid multiple
- *                        detection of devices with CONFIG_SCSI_MULTI_LUN
- * Ver 0.8   Feb 05 99   Optical media need translation too. Reverse 0.7.
- * Ver 0.9   Jul 04 99   Fix a bug in SG_SET_TRANSFORM.
- * Ver 0.91  Jun 10 02   Fix "off by one" error in transforms
- * Ver 0.92  Dec 31 02   Implement new SCSI mid level API
- */
-
-#define IDESCSI_VERSION "0.92"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/blkdev.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/ide.h>
-#include <linux/scatterlist.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/sg.h>
-
-#define IDESCSI_DEBUG_LOG		0
-
-#if IDESCSI_DEBUG_LOG
-#define debug_log(fmt, args...) \
-	printk(KERN_INFO "ide-scsi: " fmt, ## args)
-#else
-#define debug_log(fmt, args...) do {} while (0)
-#endif
-
-/*
- *	SCSI command transformation layer
- */
-#define IDESCSI_SG_TRANSFORM		1	/* /dev/sg transformation */
-
-/*
- *	Log flags
- */
-#define IDESCSI_LOG_CMD			0	/* Log SCSI commands */
-
-typedef struct ide_scsi_obj {
-	ide_drive_t		*drive;
-	ide_driver_t		*driver;
-	struct gendisk		*disk;
-	struct Scsi_Host	*host;
-
-	unsigned long transform;		/* SCSI cmd translation layer */
-	unsigned long log;			/* log flags */
-} idescsi_scsi_t;
-
-static DEFINE_MUTEX(idescsi_ref_mutex);
-/* Set by module param to skip cd */
-static int idescsi_nocd;
-
-#define ide_scsi_g(disk) \
-	container_of((disk)->private_data, struct ide_scsi_obj, driver)
-
-static struct ide_scsi_obj *ide_scsi_get(struct gendisk *disk)
-{
-	struct ide_scsi_obj *scsi = NULL;
-
-	mutex_lock(&idescsi_ref_mutex);
-	scsi = ide_scsi_g(disk);
-	if (scsi) {
-		if (ide_device_get(scsi->drive))
-			scsi = NULL;
-		else
-			scsi_host_get(scsi->host);
-	}
-	mutex_unlock(&idescsi_ref_mutex);
-	return scsi;
-}
-
-static void ide_scsi_put(struct ide_scsi_obj *scsi)
-{
-	ide_drive_t *drive = scsi->drive;
-
-	mutex_lock(&idescsi_ref_mutex);
-	scsi_host_put(scsi->host);
-	ide_device_put(drive);
-	mutex_unlock(&idescsi_ref_mutex);
-}
-
-static inline idescsi_scsi_t *scsihost_to_idescsi(struct Scsi_Host *host)
-{
-	return (idescsi_scsi_t*) (&host[1]);
-}
-
-static inline idescsi_scsi_t *drive_to_idescsi(ide_drive_t *ide_drive)
-{
-	return scsihost_to_idescsi(ide_drive->driver_data);
-}
-
-static void ide_scsi_hex_dump(u8 *data, int len)
-{
-	print_hex_dump(KERN_CONT, "", DUMP_PREFIX_NONE, 16, 1, data, len, 0);
-}
-
-static int idescsi_end_request(ide_drive_t *, int, int);
-
-static void ide_scsi_callback(ide_drive_t *drive, int dsc)
-{
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-	struct ide_atapi_pc *pc = drive->pc;
-
-	if (pc->flags & PC_FLAG_TIMEDOUT)
-		debug_log("%s: got timed out packet %lu at %lu\n", __func__,
-			  pc->scsi_cmd->serial_number, jiffies);
-		/* end this request now - scsi should retry it*/
-	else if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
-		printk(KERN_INFO "Packet command completed, %d bytes"
-				 " transferred\n", pc->xferred);
-
-	idescsi_end_request(drive, 1, 0);
-}
-
-static int idescsi_check_condition(ide_drive_t *drive,
-		struct request *failed_cmd)
-{
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-	struct ide_atapi_pc   *pc;
-	struct request *rq;
-	u8             *buf;
-
-	/* stuff a sense request in front of our current request */
-	pc = kzalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
-	rq = blk_get_request(drive->queue, READ, GFP_ATOMIC);
-	buf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_ATOMIC);
-	if (!pc || !rq || !buf) {
-		kfree(buf);
-		if (rq)
-			blk_put_request(rq);
-		kfree(pc);
-		return -ENOMEM;
-	}
-	rq->special = (char *) pc;
-	pc->rq = rq;
-	pc->buf = buf;
-	pc->c[0] = REQUEST_SENSE;
-	pc->c[4] = pc->req_xfer = pc->buf_size = SCSI_SENSE_BUFFERSIZE;
-	rq->cmd_type = REQ_TYPE_SENSE;
-	rq->cmd_flags |= REQ_PREEMPT;
-	pc->timeout = jiffies + WAIT_READY;
-	/* NOTE! Save the failed packet command in "rq->buffer" */
-	rq->buffer = (void *) failed_cmd->special;
-	pc->scsi_cmd = ((struct ide_atapi_pc *) failed_cmd->special)->scsi_cmd;
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) {
-		printk ("ide-scsi: %s: queue cmd = ", drive->name);
-		ide_scsi_hex_dump(pc->c, 6);
-	}
-	rq->rq_disk = scsi->disk;
-	rq->ref_count++;
-	memcpy(rq->cmd, pc->c, 12);
-	ide_do_drive_cmd(drive, rq);
-	return 0;
-}
-
-static ide_startstop_t
-idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
-	ide_hwif_t *hwif = drive->hwif;
-
-	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
-		/* force an abort */
-		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
-
-	rq->errors++;
-
-	idescsi_end_request(drive, 0, 0);
-
-	return ide_stopped;
-}
-
-static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
-{
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-	struct request *rq = HWGROUP(drive)->rq;
-	struct ide_atapi_pc *pc = (struct ide_atapi_pc *) rq->special;
-	int log = test_bit(IDESCSI_LOG_CMD, &scsi->log);
-	struct Scsi_Host *host;
-	int errors = rq->errors;
-	unsigned long flags;
-
-	if (!blk_special_request(rq) && !blk_sense_request(rq)) {
-		ide_end_request(drive, uptodate, nrsecs);
-		return 0;
-	}
-	ide_end_drive_cmd (drive, 0, 0);
-	if (blk_sense_request(rq)) {
-		struct ide_atapi_pc *opc = (struct ide_atapi_pc *) rq->buffer;
-		if (log) {
-			printk ("ide-scsi: %s: wrap up check %lu, rst = ", drive->name, opc->scsi_cmd->serial_number);
-			ide_scsi_hex_dump(pc->buf, 16);
-		}
-		memcpy((void *) opc->scsi_cmd->sense_buffer, pc->buf,
-			SCSI_SENSE_BUFFERSIZE);
-		kfree(pc->buf);
-		kfree(pc);
-		blk_put_request(rq);
-		pc = opc;
-		rq = pc->rq;
-		pc->scsi_cmd->result = (CHECK_CONDITION << 1) |
-				(((pc->flags & PC_FLAG_TIMEDOUT) ?
-				  DID_TIME_OUT :
-				  DID_OK) << 16);
-	} else if (pc->flags & PC_FLAG_TIMEDOUT) {
-		if (log)
-			printk (KERN_WARNING "ide-scsi: %s: timed out for %lu\n",
-					drive->name, pc->scsi_cmd->serial_number);
-		pc->scsi_cmd->result = DID_TIME_OUT << 16;
-	} else if (errors >= ERROR_MAX) {
-		pc->scsi_cmd->result = DID_ERROR << 16;
-		if (log)
-			printk ("ide-scsi: %s: I/O error for %lu\n", drive->name, pc->scsi_cmd->serial_number);
-	} else if (errors) {
-		if (log)
-			printk ("ide-scsi: %s: check condition for %lu\n", drive->name, pc->scsi_cmd->serial_number);
-		if (!idescsi_check_condition(drive, rq))
-			/* we started a request sense, so we'll be back, exit for now */
-			return 0;
-		pc->scsi_cmd->result = (CHECK_CONDITION << 1) | (DID_OK << 16);
-	} else {
-		pc->scsi_cmd->result = DID_OK << 16;
-	}
-	host = pc->scsi_cmd->device->host;
-	spin_lock_irqsave(host->host_lock, flags);
-	pc->done(pc->scsi_cmd);
-	spin_unlock_irqrestore(host->host_lock, flags);
-	kfree(pc);
-	blk_put_request(rq);
-	drive->pc = NULL;
-	return 0;
-}
-
-static inline int idescsi_set_direction(struct ide_atapi_pc *pc)
-{
-	switch (pc->c[0]) {
-		case READ_6: case READ_10: case READ_12:
-			pc->flags &= ~PC_FLAG_WRITING;
-			return 0;
-		case WRITE_6: case WRITE_10: case WRITE_12:
-			pc->flags |= PC_FLAG_WRITING;
-			return 0;
-		default:
-			return 1;
-	}
-}
-
-static int idescsi_map_sg(ide_drive_t *drive, struct ide_atapi_pc *pc)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct scatterlist *sg, *scsi_sg;
-	int segments;
-
-	if (!pc->req_xfer || pc->req_xfer % 1024)
-		return 1;
-
-	if (idescsi_set_direction(pc))
-		return 1;
-
-	sg = hwif->sg_table;
-	scsi_sg = scsi_sglist(pc->scsi_cmd);
-	segments = scsi_sg_count(pc->scsi_cmd);
-
-	if (segments > hwif->sg_max_nents)
-		return 1;
-
-	hwif->sg_nents = segments;
-	memcpy(sg, scsi_sg, sizeof(*sg) * segments);
-
-	return 0;
-}
-
-static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive,
-		struct ide_atapi_pc *pc)
-{
-	/* Set the current packet command */
-	drive->pc = pc;
-
-	return ide_issue_pc(drive, ide_scsi_get_timeout(pc), ide_scsi_expiry);
-}
-
-/*
- *	idescsi_do_request is our request handling function.
- */
-static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
-{
-	debug_log("dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,
-		  rq->cmd[0], rq->errors);
-	debug_log("sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
-		  rq->sector, rq->nr_sectors, rq->current_nr_sectors);
-
-	if (blk_sense_request(rq) || blk_special_request(rq)) {
-		struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special;
-
-		if ((drive->dev_flags & IDE_DFLAG_USING_DMA) &&
-		    idescsi_map_sg(drive, pc) == 0)
-			pc->flags |= PC_FLAG_DMA_OK;
-
-		return idescsi_issue_pc(drive, pc);
-	}
-	blk_dump_rq_flags(rq, "ide-scsi: unsup command");
-	idescsi_end_request (drive, 0, 0);
-	return ide_stopped;
-}
-
-#ifdef CONFIG_IDE_PROC_FS
-static ide_proc_entry_t idescsi_proc[] = {
-	{ "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
-	{ NULL, 0, NULL, NULL }
-};
-
-#define ide_scsi_devset_get(name, field) \
-static int get_##name(ide_drive_t *drive) \
-{ \
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive); \
-	return scsi->field; \
-}
-
-#define ide_scsi_devset_set(name, field) \
-static int set_##name(ide_drive_t *drive, int arg) \
-{ \
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive); \
-	scsi->field = arg; \
-	return 0; \
-}
-
-#define ide_scsi_devset_rw_field(_name, _field) \
-ide_scsi_devset_get(_name, _field); \
-ide_scsi_devset_set(_name, _field); \
-IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name);
-
-ide_devset_rw_field(bios_cyl, bios_cyl);
-ide_devset_rw_field(bios_head, bios_head);
-ide_devset_rw_field(bios_sect, bios_sect);
-
-ide_scsi_devset_rw_field(transform, transform);
-ide_scsi_devset_rw_field(log, log);
-
-static const struct ide_proc_devset idescsi_settings[] = {
-	IDE_PROC_DEVSET(bios_cyl,  0, 1023),
-	IDE_PROC_DEVSET(bios_head, 0,  255),
-	IDE_PROC_DEVSET(bios_sect, 0,	63),
-	IDE_PROC_DEVSET(log,	   0,	 1),
-	IDE_PROC_DEVSET(transform, 0,	 3),
-	{ 0 },
-};
-
-static ide_proc_entry_t *ide_scsi_proc_entries(ide_drive_t *drive)
-{
-	return idescsi_proc;
-}
-
-static const struct ide_proc_devset *ide_scsi_proc_devsets(ide_drive_t *drive)
-{
-	return idescsi_settings;
-}
-#endif
-
-/*
- *	Driver initialization.
- */
-static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
-{
-	clear_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
-#if IDESCSI_DEBUG_LOG
-	set_bit(IDESCSI_LOG_CMD, &scsi->log);
-#endif /* IDESCSI_DEBUG_LOG */
-
-	drive->pc_callback	 = ide_scsi_callback;
-	drive->pc_update_buffers = NULL;
-	drive->pc_io_buffers	 = ide_io_buffers;
-
-	ide_proc_register_driver(drive, scsi->driver);
-}
-
-static void ide_scsi_remove(ide_drive_t *drive)
-{
-	struct Scsi_Host *scsihost = drive->driver_data;
-	struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost);
-	struct gendisk *g = scsi->disk;
-
-	scsi_remove_host(scsihost);
-	ide_proc_unregister_driver(drive, scsi->driver);
-
-	ide_unregister_region(g);
-
-	drive->driver_data = NULL;
-	g->private_data = NULL;
-	put_disk(g);
-
-	ide_scsi_put(scsi);
-
-	drive->dev_flags &= ~IDE_DFLAG_SCSI;
-}
-
-static int ide_scsi_probe(ide_drive_t *);
-
-static ide_driver_t idescsi_driver = {
-	.gen_driver = {
-		.owner		= THIS_MODULE,
-		.name		= "ide-scsi",
-		.bus		= &ide_bus_type,
-	},
-	.probe			= ide_scsi_probe,
-	.remove			= ide_scsi_remove,
-	.version		= IDESCSI_VERSION,
-	.do_request		= idescsi_do_request,
-	.end_request		= idescsi_end_request,
-	.error                  = idescsi_atapi_error,
-#ifdef CONFIG_IDE_PROC_FS
-	.proc_entries		= ide_scsi_proc_entries,
-	.proc_devsets		= ide_scsi_proc_devsets,
-#endif
-};
-
-static int idescsi_ide_open(struct block_device *bdev, fmode_t mode)
-{
-	struct ide_scsi_obj *scsi = ide_scsi_get(bdev->bd_disk);
-
-	if (!scsi)
-		return -ENXIO;
-
-	return 0;
-}
-
-static int idescsi_ide_release(struct gendisk *disk, fmode_t mode)
-{
-	ide_scsi_put(ide_scsi_g(disk));
-	return 0;
-}
-
-static int idescsi_ide_ioctl(struct block_device *bdev, fmode_t mode,
-			unsigned int cmd, unsigned long arg)
-{
-	struct ide_scsi_obj *scsi = ide_scsi_g(bdev->bd_disk);
-	return generic_ide_ioctl(scsi->drive, bdev, cmd, arg);
-}
-
-static struct block_device_operations idescsi_ops = {
-	.owner		= THIS_MODULE,
-	.open		= idescsi_ide_open,
-	.release	= idescsi_ide_release,
-	.locked_ioctl	= idescsi_ide_ioctl,
-};
-
-static int idescsi_slave_configure(struct scsi_device * sdp)
-{
-	/* Configure detected device */
-	sdp->use_10_for_rw = 1;
-	sdp->use_10_for_ms = 1;
-	scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, sdp->host->cmd_per_lun);
-	return 0;
-}
-
-static const char *idescsi_info (struct Scsi_Host *host)
-{
-	return "SCSI host adapter emulation for IDE ATAPI devices";
-}
-
-static int idescsi_ioctl (struct scsi_device *dev, int cmd, void __user *arg)
-{
-	idescsi_scsi_t *scsi = scsihost_to_idescsi(dev->host);
-
-	if (cmd == SG_SET_TRANSFORM) {
-		if (arg)
-			set_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
-		else
-			clear_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
-		return 0;
-	} else if (cmd == SG_GET_TRANSFORM)
-		return put_user(test_bit(IDESCSI_SG_TRANSFORM, &scsi->transform), (int __user *) arg);
-	return -EINVAL;
-}
-
-static int idescsi_queue (struct scsi_cmnd *cmd,
-		void (*done)(struct scsi_cmnd *))
-{
-	struct Scsi_Host *host = cmd->device->host;
-	idescsi_scsi_t *scsi = scsihost_to_idescsi(host);
-	ide_drive_t *drive = scsi->drive;
-	struct request *rq = NULL;
-	struct ide_atapi_pc *pc = NULL;
-	int write = cmd->sc_data_direction == DMA_TO_DEVICE;
-
-	if (!drive) {
-		scmd_printk (KERN_ERR, cmd, "drive not present\n");
-		goto abort;
-	}
-	scsi = drive_to_idescsi(drive);
-	pc = kmalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
-	rq = blk_get_request(drive->queue, write, GFP_ATOMIC);
-	if (rq == NULL || pc == NULL) {
-		printk (KERN_ERR "ide-scsi: %s: out of memory\n", drive->name);
-		goto abort;
-	}
-
-	memset (pc->c, 0, 12);
-	pc->flags = 0;
-	if (cmd->sc_data_direction == DMA_TO_DEVICE)
-		pc->flags |= PC_FLAG_WRITING;
-	pc->rq = rq;
-	memcpy (pc->c, cmd->cmnd, cmd->cmd_len);
-	pc->buf = NULL;
-	pc->sg = scsi_sglist(cmd);
-	pc->sg_cnt = scsi_sg_count(cmd);
-	pc->b_count = 0;
-	pc->req_xfer = pc->buf_size = scsi_bufflen(cmd);
-	pc->scsi_cmd = cmd;
-	pc->done = done;
-	pc->timeout = jiffies + cmd->request->timeout;
-
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) {
-		printk ("ide-scsi: %s: que %lu, cmd = ", drive->name, cmd->serial_number);
-		ide_scsi_hex_dump(cmd->cmnd, cmd->cmd_len);
-		if (memcmp(pc->c, cmd->cmnd, cmd->cmd_len)) {
-			printk ("ide-scsi: %s: que %lu, tsl = ", drive->name, cmd->serial_number);
-			ide_scsi_hex_dump(pc->c, 12);
-		}
-	}
-
-	rq->special = (char *) pc;
-	rq->cmd_type = REQ_TYPE_SPECIAL;
-	spin_unlock_irq(host->host_lock);
-	rq->ref_count++;
-	memcpy(rq->cmd, pc->c, 12);
-	blk_execute_rq_nowait(drive->queue, scsi->disk, rq, 0, NULL);
-	spin_lock_irq(host->host_lock);
-	return 0;
-abort:
-	kfree (pc);
-	if (rq)
-		blk_put_request(rq);
-	cmd->result = DID_ERROR << 16;
-	done(cmd);
-	return 0;
-}
-
-static int idescsi_eh_abort (struct scsi_cmnd *cmd)
-{
-	idescsi_scsi_t *scsi  = scsihost_to_idescsi(cmd->device->host);
-	ide_drive_t    *drive = scsi->drive;
-	ide_hwif_t     *hwif;
-	ide_hwgroup_t  *hwgroup;
-	int		busy;
-	int             ret   = FAILED;
-
-	struct ide_atapi_pc *pc;
-
-	/* In idescsi_eh_abort we try to gently pry our command from the ide subsystem */
-
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
-		printk (KERN_WARNING "ide-scsi: abort called for %lu\n", cmd->serial_number);
-
-	if (!drive) {
-		printk (KERN_WARNING "ide-scsi: Drive not set in idescsi_eh_abort\n");
-		WARN_ON(1);
-		goto no_drive;
-	}
-
-	hwif = drive->hwif;
-	hwgroup = hwif->hwgroup;
-
-	/* First give it some more time, how much is "right" is hard to say :-(
-	   FIXME - uses mdelay which causes latency? */
-	busy = ide_wait_not_busy(hwif, 100);
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
-		printk (KERN_WARNING "ide-scsi: drive did%s become ready\n", busy?" not":"");
-
-	spin_lock_irq(&hwgroup->lock);
-
-	/* If there is no pc running we're done (our interrupt took care of it) */
-	pc = drive->pc;
-	if (pc == NULL) {
-		ret = SUCCESS;
-		goto ide_unlock;
-	}
-
-	/* It's somewhere in flight. Does ide subsystem agree? */
-	if (pc->scsi_cmd->serial_number == cmd->serial_number && !busy &&
-	    elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != pc->rq) {
-		/*
-		 * FIXME - not sure this condition can ever occur
-		 */
-		printk (KERN_ERR "ide-scsi: cmd aborted!\n");
-
-		if (blk_sense_request(pc->rq))
-			kfree(pc->buf);
-		/* we need to call blk_put_request twice. */
-		blk_put_request(pc->rq);
-		blk_put_request(pc->rq);
-		kfree(pc);
-		drive->pc = NULL;
-
-		ret = SUCCESS;
-	}
-
-ide_unlock:
-	spin_unlock_irq(&hwgroup->lock);
-no_drive:
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
-		printk (KERN_WARNING "ide-scsi: abort returns %s\n", ret == SUCCESS?"success":"failed");
-
-	return ret;
-}
-
-static int idescsi_eh_reset (struct scsi_cmnd *cmd)
-{
-	struct request *req;
-	idescsi_scsi_t *scsi  = scsihost_to_idescsi(cmd->device->host);
-	ide_drive_t    *drive = scsi->drive;
-	ide_hwgroup_t  *hwgroup;
-	int             ready = 0;
-	int             ret   = SUCCESS;
-
-	struct ide_atapi_pc *pc;
-
-	/* In idescsi_eh_reset we forcefully remove the command from the ide subsystem and reset the device. */
-
-	if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
-		printk (KERN_WARNING "ide-scsi: reset called for %lu\n", cmd->serial_number);
-
-	if (!drive) {
-		printk (KERN_WARNING "ide-scsi: Drive not set in idescsi_eh_reset\n");
-		WARN_ON(1);
-		return FAILED;
-	}
-
-	hwgroup = drive->hwif->hwgroup;
-
-	spin_lock_irq(cmd->device->host->host_lock);
-	spin_lock(&hwgroup->lock);
-
-	pc = drive->pc;
-	if (pc)
-		req = pc->rq;
-
-	if (pc == NULL || req != hwgroup->rq || hwgroup->handler == NULL) {
-		printk (KERN_WARNING "ide-scsi: No active request in idescsi_eh_reset\n");
-		spin_unlock(&hwgroup->lock);
-		spin_unlock_irq(cmd->device->host->host_lock);
-		return FAILED;
-	}
-
-	/* kill current request */
-	if (__blk_end_request(req, -EIO, 0))
-		BUG();
-	if (blk_sense_request(req))
-		kfree(pc->buf);
-	kfree(pc);
-	drive->pc = NULL;
-	blk_put_request(req);
-
-	/* now nuke the drive queue */
-	while ((req = elv_next_request(drive->queue))) {
-		if (__blk_end_request(req, -EIO, 0))
-			BUG();
-	}
-
-	hwgroup->rq = NULL;
-	hwgroup->handler = NULL;
-	hwgroup->busy = 1; /* will set this to zero when ide reset finished */
-	spin_unlock(&hwgroup->lock);
-
-	ide_do_reset(drive);
-
-	/* ide_do_reset starts a polling handler which restarts itself every 50ms until the reset finishes */
-
-	do {
-		spin_unlock_irq(cmd->device->host->host_lock);
-		msleep(50);
-		spin_lock_irq(cmd->device->host->host_lock);
-	} while ( HWGROUP(drive)->handler );
-
-	ready = drive_is_ready(drive);
-	HWGROUP(drive)->busy--;
-	if (!ready) {
-		printk (KERN_ERR "ide-scsi: reset failed!\n");
-		ret = FAILED;
-	}
-
-	spin_unlock_irq(cmd->device->host->host_lock);
-	return ret;
-}
-
-static int idescsi_bios(struct scsi_device *sdev, struct block_device *bdev,
-		sector_t capacity, int *parm)
-{
-	idescsi_scsi_t *idescsi = scsihost_to_idescsi(sdev->host);
-	ide_drive_t *drive = idescsi->drive;
-
-	if (drive->bios_cyl && drive->bios_head && drive->bios_sect) {
-		parm[0] = drive->bios_head;
-		parm[1] = drive->bios_sect;
-		parm[2] = drive->bios_cyl;
-	}
-	return 0;
-}
-
-static struct scsi_host_template idescsi_template = {
-	.module			= THIS_MODULE,
-	.name			= "idescsi",
-	.info			= idescsi_info,
-	.slave_configure        = idescsi_slave_configure,
-	.ioctl			= idescsi_ioctl,
-	.queuecommand		= idescsi_queue,
-	.eh_abort_handler	= idescsi_eh_abort,
-	.eh_host_reset_handler  = idescsi_eh_reset,
-	.bios_param		= idescsi_bios,
-	.can_queue		= 40,
-	.this_id		= -1,
-	.sg_tablesize		= 256,
-	.cmd_per_lun		= 5,
-	.max_sectors		= 128,
-	.use_clustering		= DISABLE_CLUSTERING,
-	.emulated		= 1,
-	.proc_name		= "ide-scsi",
-};
-
-static int ide_scsi_probe(ide_drive_t *drive)
-{
-	idescsi_scsi_t *idescsi;
-	struct Scsi_Host *host;
-	struct gendisk *g;
-	static int warned;
-	int err = -ENOMEM;
-	u16 last_lun;
-
-	if (!warned && drive->media == ide_cdrom) {
-		printk(KERN_WARNING "ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device\n");
-		warned = 1;
-	}
-
-	if (idescsi_nocd && drive->media == ide_cdrom)
-		return -ENODEV;
-
-	if (!strstr("ide-scsi", drive->driver_req) ||
-	    drive->media == ide_disk ||
-	    !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
-		return -ENODEV;
-
-	drive->dev_flags |= IDE_DFLAG_SCSI;
-
-	g = alloc_disk(1 << PARTN_BITS);
-	if (!g)
-		goto out_host_put;
-
-	ide_init_disk(g, drive);
-
-	host->max_id = 1;
-
-	last_lun = drive->id[ATA_ID_LAST_LUN];
-	if (last_lun)
-		debug_log("%s: last_lun=%u\n", drive->name, last_lun);
-
-	if ((last_lun & 7) != 7)
-		host->max_lun = (last_lun & 7) + 1;
-	else
-		host->max_lun = 1;
-
-	drive->driver_data = host;
-	idescsi = scsihost_to_idescsi(host);
-	idescsi->drive = drive;
-	idescsi->driver = &idescsi_driver;
-	idescsi->host = host;
-	idescsi->disk = g;
-	g->private_data = &idescsi->driver;
-	err = 0;
-	idescsi_setup(drive, idescsi);
-	g->fops = &idescsi_ops;
-	ide_register_region(g);
-	err = scsi_add_host(host, &drive->gendev);
-	if (!err) {
-		scsi_scan_host(host);
-		return 0;
-	}
-	/* fall through on error */
-	ide_unregister_region(g);
-	ide_proc_unregister_driver(drive, &idescsi_driver);
-
-	put_disk(g);
-out_host_put:
-	drive->dev_flags &= ~IDE_DFLAG_SCSI;
-	scsi_host_put(host);
-	return err;
-}
-
-static int __init init_idescsi_module(void)
-{
-	return driver_register(&idescsi_driver.gen_driver);
-}
-
-static void __exit exit_idescsi_module(void)
-{
-	driver_unregister(&idescsi_driver.gen_driver);
-}
-
-module_param(idescsi_nocd, int, 0600);
-MODULE_PARM_DESC(idescsi_nocd, "Disable handling of CD-ROMs so they may be driven by ide-cd");
-module_init(init_idescsi_module);
-module_exit(exit_idescsi_module);
-MODULE_LICENSE("GPL");