X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fide%2Fide-disk.c;h=a9fbe2c31210cc1400dc2ce132c74211dbd40642;hb=eaa958402ea40851097d051f52ba1bb7a885efe9;hp=8f49bc0ecbf868f7b8faf0b696f1711b77a25ce7;hpb=942dcd85bf8edf38cdc3745306ca250684d99a61;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 8f49bc0..a9fbe2c 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -2,7 +2,7 @@
  *  Copyright (C) 1994-1998	   Linus Torvalds & authors (see below)
  *  Copyright (C) 1998-2002	   Linux ATA Development
  *				      Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 2003		   Red Hat <alan@redhat.com>
+ *  Copyright (C) 2003		   Red Hat
  *  Copyright (C) 2003-2005, 2007  Bartlomiej Zolnierkiewicz
  */
 
@@ -14,9 +14,6 @@
  * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
  */
 
-#define IDEDISK_VERSION	"1.18"
-
-#include <linux/module.h>
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
@@ -31,7 +28,6 @@
 #include <linux/mutex.h>
 #include <linux/leds.h>
 #include <linux/ide.h>
-#include <linux/hdreg.h>
 
 #include <asm/byteorder.h>
 #include <asm/irq.h>
@@ -39,104 +35,7 @@
 #include <asm/io.h>
 #include <asm/div64.h>
 
-#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
-#define IDE_DISK_MINORS		(1 << PARTN_BITS)
-#else
-#define IDE_DISK_MINORS		0
-#endif
-
-struct ide_disk_obj {
-	ide_drive_t	*drive;
-	ide_driver_t	*driver;
-	struct gendisk	*disk;
-	struct kref	kref;
-	unsigned int	openers;	/* protected by BKL for now */
-};
-
-static DEFINE_MUTEX(idedisk_ref_mutex);
-
-#define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref)
-
-#define ide_disk_g(disk) \
-	container_of((disk)->private_data, struct ide_disk_obj, driver)
-
-static void ide_disk_release(struct kref *);
-
-static struct ide_disk_obj *ide_disk_get(struct gendisk *disk)
-{
-	struct ide_disk_obj *idkp = NULL;
-
-	mutex_lock(&idedisk_ref_mutex);
-	idkp = ide_disk_g(disk);
-	if (idkp) {
-		if (ide_device_get(idkp->drive))
-			idkp = NULL;
-		else
-			kref_get(&idkp->kref);
-	}
-	mutex_unlock(&idedisk_ref_mutex);
-	return idkp;
-}
-
-static void ide_disk_put(struct ide_disk_obj *idkp)
-{
-	ide_drive_t *drive = idkp->drive;
-
-	mutex_lock(&idedisk_ref_mutex);
-	kref_put(&idkp->kref, ide_disk_release);
-	ide_device_put(drive);
-	mutex_unlock(&idedisk_ref_mutex);
-}
-
-/*
- * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
- * value for this drive (from its reported identification information).
- *
- * Returns:	1 if lba_capacity looks sensible
- *		0 otherwise
- *
- * It is called only once for each drive.
- */
-static int lba_capacity_is_ok(u16 *id)
-{
-	unsigned long lba_sects, chs_sects, head, tail;
-
-	/* No non-LBA info .. so valid! */
-	if (id[ATA_ID_CYLS] == 0)
-		return 1;
-
-	lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
-
-	/*
-	 * The ATA spec tells large drives to return
-	 * C/H/S = 16383/16/63 independent of their size.
-	 * Some drives can be jumpered to use 15 heads instead of 16.
-	 * Some drives can be jumpered to use 4092 cyls instead of 16383.
-	 */
-	if ((id[ATA_ID_CYLS] == 16383 ||
-	     (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
-	    id[ATA_ID_SECTORS] == 63 &&
-	    (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
-	    (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
-		return 1;
-
-	chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
-
-	/* perform a rough sanity check on lba_sects:  within 10% is OK */
-	if ((lba_sects - chs_sects) < chs_sects/10)
-		return 1;
-
-	/* some drives have the word order reversed */
-	head = ((lba_sects >> 16) & 0xffff);
-	tail = (lba_sects & 0xffff);
-	lba_sects = (head | (tail << 16));
-	if ((lba_sects - chs_sects) < chs_sects/10) {
-		*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
-		return 1;	/* lba_capacity is (now) good */
-	}
-
-	return 0;	/* lba_capacity value may be bad */
-}
+#include "ide-disk.h"
 
 static const u8 ide_rw_cmds[] = {
 	ATA_CMD_READ_MULTI,
@@ -153,33 +52,26 @@ static const u8 ide_rw_cmds[] = {
 	ATA_CMD_WRITE_EXT,
 };
 
-static const u8 ide_data_phases[] = {
-	TASKFILE_MULTI_IN,
-	TASKFILE_MULTI_OUT,
-	TASKFILE_IN,
-	TASKFILE_OUT,
-	TASKFILE_IN_DMA,
-	TASKFILE_OUT_DMA,
-};
-
-static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma)
+static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma)
 {
 	u8 index, lba48, write;
 
-	lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
-	write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
+	lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
+	write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
 
-	if (dma)
+	if (dma) {
+		cmd->protocol = ATA_PROT_DMA;
 		index = 8;
-	else
-		index = drive->mult_count ? 0 : 4;
-
-	task->tf.command = ide_rw_cmds[index + lba48 + write];
-
-	if (dma)
-		index = 8; /* fixup index */
+	} else {
+		cmd->protocol = ATA_PROT_PIO;
+		if (drive->mult_count) {
+			cmd->tf_flags |= IDE_TFLAG_MULTI_PIO;
+			index = 0;
+		} else
+			index = 4;
+	}
 
-	task->data_phase = ide_data_phases[index / 2 + write];
+	cmd->tf.command = ide_rw_cmds[index + lba48 + write];
 }
 
 /*
@@ -189,12 +81,12 @@ static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma)
 static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 					sector_t block)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
-	unsigned int dma	= drive->using_dma;
+	ide_hwif_t *hwif	= drive->hwif;
 	u16 nsectors		= (u16)rq->nr_sectors;
-	u8 lba48		= (drive->addressing == 1) ? 1 : 0;
-	ide_task_t		task;
-	struct ide_taskfile	*tf = &task.tf;
+	u8 lba48		= !!(drive->dev_flags & IDE_DFLAG_LBA48);
+	u8 dma			= !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
+	struct ide_cmd		cmd;
+	struct ide_taskfile	*tf = &cmd.tf;
 	ide_startstop_t		rc;
 
 	if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) {
@@ -204,38 +96,38 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 			lba48 = 0;
 	}
 
-	if (!dma) {
-		ide_init_sg_cmd(drive, rq);
-		ide_map_sg(drive, rq);
-	}
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
 
-	memset(&task, 0, sizeof(task));
-	task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-
-	if (drive->select.b.lba) {
+	if (drive->dev_flags & IDE_DFLAG_LBA) {
 		if (lba48) {
 			pr_debug("%s: LBA=0x%012llx\n", drive->name,
 					(unsigned long long)block);
 
-			tf->hob_nsect = (nsectors >> 8) & 0xff;
-			tf->hob_lbal  = (u8)(block >> 24);
-			if (sizeof(block) != 4) {
-				tf->hob_lbam = (u8)((u64)block >> 32);
-				tf->hob_lbah = (u8)((u64)block >> 40);
-			}
-
 			tf->nsect  = nsectors & 0xff;
 			tf->lbal   = (u8) block;
 			tf->lbam   = (u8)(block >>  8);
 			tf->lbah   = (u8)(block >> 16);
+			tf->device = ATA_LBA;
+
+			tf = &cmd.hob;
+			tf->nsect = (nsectors >> 8) & 0xff;
+			tf->lbal  = (u8)(block >> 24);
+			if (sizeof(block) != 4) {
+				tf->lbam = (u8)((u64)block >> 32);
+				tf->lbah = (u8)((u64)block >> 40);
+			}
 
-			task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
+			cmd.valid.out.hob = IDE_VALID_OUT_HOB;
+			cmd.valid.in.hob  = IDE_VALID_IN_HOB;
+			cmd.tf_flags |= IDE_TFLAG_LBA48;
 		} else {
 			tf->nsect  = nsectors & 0xff;
 			tf->lbal   = block;
 			tf->lbam   = block >>= 8;
 			tf->lbah   = block >>= 8;
-			tf->device = (block >> 8) & 0xf;
+			tf->device = ((block >> 8) & 0xf) | ATA_LBA;
 		}
 	} else {
 		unsigned int sect, head, cyl, track;
@@ -254,23 +146,27 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 		tf->device = head;
 	}
 
+	cmd.tf_flags |= IDE_TFLAG_FS;
+
 	if (rq_data_dir(rq))
-		task.tf_flags |= IDE_TFLAG_WRITE;
+		cmd.tf_flags |= IDE_TFLAG_WRITE;
+
+	ide_tf_set_cmd(drive, &cmd, dma);
+	cmd.rq = rq;
 
-	ide_tf_set_cmd(drive, &task, dma);
-	if (!dma)
-		hwif->data_phase = task.data_phase;
-	task.rq = rq;
+	if (dma == 0) {
+		ide_init_sg_cmd(&cmd, nsectors << 9);
+		ide_map_sg(drive, &cmd);
+	}
 
-	rc = do_rw_taskfile(drive, &task);
+	rc = do_rw_taskfile(drive, &cmd);
 
 	if (rc == ide_stopped && dma) {
 		/* fallback to PIO */
-		task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
-		ide_tf_set_cmd(drive, &task, 0);
-		hwif->data_phase = task.data_phase;
-		ide_init_sg_cmd(drive, rq);
-		rc = do_rw_taskfile(drive, &task);
+		cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
+		ide_tf_set_cmd(drive, &cmd, 0);
+		ide_init_sg_cmd(&cmd, nsectors << 9);
+		rc = do_rw_taskfile(drive, &cmd);
 	}
 
 	return rc;
@@ -285,13 +181,15 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 				      sector_t block)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 
-	BUG_ON(drive->blocked);
+	BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
 
 	if (!blk_fs_request(rq)) {
 		blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command");
-		ide_end_request(drive, 0, 0);
+		if (rq->errors == 0)
+			rq->errors = -EIO;
+		ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
 		return ide_stopped;
 	}
 
@@ -314,26 +212,30 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
  */
 static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
 {
-	ide_task_t args;
-	struct ide_taskfile *tf = &args.tf;
+	struct ide_cmd cmd;
+	struct ide_taskfile *tf = &cmd.tf;
 	u64 addr = 0;
 
-	/* Create IDE/ATA command request structure */
-	memset(&args, 0, sizeof(ide_task_t));
+	memset(&cmd, 0, sizeof(cmd));
 	if (lba48)
 		tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
 	else
 		tf->command = ATA_CMD_READ_NATIVE_MAX;
 	tf->device  = ATA_LBA;
-	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	if (lba48)
-		args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
-	/* submit command request */
-	ide_no_data_taskfile(drive, &args);
+
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
+	if (lba48) {
+		cmd.valid.out.hob = IDE_VALID_OUT_HOB;
+		cmd.valid.in.hob  = IDE_VALID_IN_HOB;
+		cmd.tf_flags = IDE_TFLAG_LBA48;
+	}
+
+	ide_no_data_taskfile(drive, &cmd);
 
 	/* if OK, compute maximum address value */
-	if ((tf->status & 0x01) == 0)
-		addr = ide_get_lba_addr(tf, lba48) + 1;
+	if (!(tf->status & ATA_ERR))
+		addr = ide_get_lba_addr(&cmd, lba48) + 1;
 
 	return addr;
 }
@@ -344,34 +246,40 @@ static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
  */
 static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
 {
-	ide_task_t args;
-	struct ide_taskfile *tf = &args.tf;
+	struct ide_cmd cmd;
+	struct ide_taskfile *tf = &cmd.tf;
 	u64 addr_set = 0;
 
 	addr_req--;
-	/* Create IDE/ATA command request structure */
-	memset(&args, 0, sizeof(ide_task_t));
+
+	memset(&cmd, 0, sizeof(cmd));
 	tf->lbal     = (addr_req >>  0) & 0xff;
 	tf->lbam     = (addr_req >>= 8) & 0xff;
 	tf->lbah     = (addr_req >>= 8) & 0xff;
 	if (lba48) {
-		tf->hob_lbal = (addr_req >>= 8) & 0xff;
-		tf->hob_lbam = (addr_req >>= 8) & 0xff;
-		tf->hob_lbah = (addr_req >>= 8) & 0xff;
+		cmd.hob.lbal = (addr_req >>= 8) & 0xff;
+		cmd.hob.lbam = (addr_req >>= 8) & 0xff;
+		cmd.hob.lbah = (addr_req >>= 8) & 0xff;
 		tf->command  = ATA_CMD_SET_MAX_EXT;
 	} else {
 		tf->device   = (addr_req >>= 8) & 0x0f;
 		tf->command  = ATA_CMD_SET_MAX;
 	}
 	tf->device |= ATA_LBA;
-	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	if (lba48)
-		args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
-	/* submit command request */
-	ide_no_data_taskfile(drive, &args);
+
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
+	if (lba48) {
+		cmd.valid.out.hob = IDE_VALID_OUT_HOB;
+		cmd.valid.in.hob  = IDE_VALID_IN_HOB;
+		cmd.tf_flags = IDE_TFLAG_LBA48;
+	}
+
+	ide_no_data_taskfile(drive, &cmd);
+
 	/* if OK, compute maximum address value */
-	if ((tf->status & 0x01) == 0)
-		addr_set = ide_get_lba_addr(tf, lba48) + 1;
+	if (!(tf->status & ATA_ERR))
+		addr_set = ide_get_lba_addr(&cmd, lba48) + 1;
 
 	return addr_set;
 }
@@ -431,163 +339,80 @@ static void idedisk_check_hpa(ide_drive_t *drive)
 	}
 }
 
-static void init_idedisk_capacity(ide_drive_t *drive)
+static int ide_disk_get_capacity(ide_drive_t *drive)
 {
 	u16 *id = drive->id;
-	/*
-	 * If this drive supports the Host Protected Area feature set,
-	 * then we may need to change our opinion about the drive's capacity.
-	 */
-	int hpa = ata_id_hpa_enabled(id);
+	int lba;
 
 	if (ata_id_lba48_enabled(id)) {
 		/* drive speaks 48-bit LBA */
-		drive->select.b.lba = 1;
+		lba = 1;
 		drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
-		if (hpa)
-			idedisk_check_hpa(drive);
-	} else if (ata_id_has_lba(id) && lba_capacity_is_ok(id)) {
+	} else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
 		/* drive speaks 28-bit LBA */
-		drive->select.b.lba = 1;
+		lba = 1;
 		drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
-		if (hpa)
-			idedisk_check_hpa(drive);
 	} else {
 		/* drive speaks boring old 28-bit CHS */
+		lba = 0;
 		drive->capacity64 = drive->cyl * drive->head * drive->sect;
 	}
-}
-
-static sector_t idedisk_capacity(ide_drive_t *drive)
-{
-	return drive->capacity64;
-}
-
-#ifdef CONFIG_IDE_PROC_FS
-static int smart_enable(ide_drive_t *drive)
-{
-	ide_task_t args;
-	struct ide_taskfile *tf = &args.tf;
-
-	memset(&args, 0, sizeof(ide_task_t));
-	tf->feature = ATA_SMART_ENABLE;
-	tf->lbam    = ATA_SMART_LBAM_PASS;
-	tf->lbah    = ATA_SMART_LBAH_PASS;
-	tf->command = ATA_CMD_SMART;
-	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	return ide_no_data_taskfile(drive, &args);
-}
-
-static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
-{
-	ide_task_t args;
-	struct ide_taskfile *tf = &args.tf;
-
-	memset(&args, 0, sizeof(ide_task_t));
-	tf->feature = sub_cmd;
-	tf->nsect   = 0x01;
-	tf->lbam    = ATA_SMART_LBAM_PASS;
-	tf->lbah    = ATA_SMART_LBAH_PASS;
-	tf->command = ATA_CMD_SMART;
-	args.tf_flags	= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	args.data_phase	= TASKFILE_IN;
-	(void) smart_enable(drive);
-	return ide_raw_taskfile(drive, &args, buf, 1);
-}
 
-static int proc_idedisk_read_cache
-	(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	ide_drive_t	*drive = (ide_drive_t *) data;
-	char		*out = page;
-	int		len;
-
-	if (drive->id_read)
-		len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
-	else
-		len = sprintf(out, "(none)\n");
-
-	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
-}
-
-static int proc_idedisk_read_capacity
-	(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	ide_drive_t*drive = (ide_drive_t *)data;
-	int len;
-
-	len = sprintf(page, "%llu\n", (long long)idedisk_capacity(drive));
+	if (lba) {
+		drive->dev_flags |= IDE_DFLAG_LBA;
 
-	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
-}
-
-static int proc_idedisk_read_smart(char *page, char **start, off_t off,
-				   int count, int *eof, void *data, u8 sub_cmd)
-{
-	ide_drive_t	*drive = (ide_drive_t *)data;
-	int		len = 0, i = 0;
-
-	if (get_smart_data(drive, page, sub_cmd) == 0) {
-		unsigned short *val = (unsigned short *) page;
-		char *out = (char *)val + SECTOR_SIZE;
-
-		page = out;
-		do {
-			out += sprintf(out, "%04x%c", le16_to_cpu(*val),
-				       (++i & 7) ? ' ' : '\n');
-			val += 1;
-		} while (i < SECTOR_SIZE / 2);
-		len = out - page;
+		/*
+		* If this device supports the Host Protected Area feature set,
+		* then we may need to change our opinion about its capacity.
+		*/
+		if (ata_id_hpa_enabled(id))
+			idedisk_check_hpa(drive);
 	}
 
-	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
-}
+	/* limit drive capacity to 137GB if LBA48 cannot be used */
+	if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 &&
+	    drive->capacity64 > 1ULL << 28) {
+		printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
+		       "%llu sectors (%llu MB)\n",
+		       drive->name, (unsigned long long)drive->capacity64,
+		       sectors_to_MB(drive->capacity64));
+		drive->capacity64 = 1ULL << 28;
+	}
 
-static int proc_idedisk_read_sv
-	(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	return proc_idedisk_read_smart(page, start, off, count, eof, data,
-				       ATA_SMART_READ_VALUES);
-}
+	if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) &&
+	    (drive->dev_flags & IDE_DFLAG_LBA48)) {
+		if (drive->capacity64 > 1ULL << 28) {
+			printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
+					 " will be used for accessing sectors "
+					 "> %u\n", drive->name, 1 << 28);
+		} else
+			drive->dev_flags &= ~IDE_DFLAG_LBA48;
+	}
 
-static int proc_idedisk_read_st
-	(char *page, char **start, off_t off, int count, int *eof, void *data)
-{
-	return proc_idedisk_read_smart(page, start, off, count, eof, data,
-				       ATA_SMART_READ_THRESHOLDS);
+	return 0;
 }
 
-static ide_proc_entry_t idedisk_proc[] = {
-	{ "cache",	  S_IFREG|S_IRUGO, proc_idedisk_read_cache,    NULL },
-	{ "capacity",	  S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
-	{ "geometry",	  S_IFREG|S_IRUGO, proc_ide_read_geometry,     NULL },
-	{ "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv,       NULL },
-	{ "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st,   NULL },
-	{ NULL, 0, NULL, NULL }
-};
-#endif	/* CONFIG_IDE_PROC_FS */
-
 static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
 {
 	ide_drive_t *drive = q->queuedata;
-	ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC);
+	struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
 
 	/* FIXME: map struct ide_taskfile on rq->cmd[] */
-	BUG_ON(task == NULL);
+	BUG_ON(cmd == NULL);
 
-	memset(task, 0, sizeof(*task));
-	if (ide_id_has_flush_cache_ext(drive->id) &&
+	memset(cmd, 0, sizeof(*cmd));
+	if (ata_id_flush_ext_enabled(drive->id) &&
 	    (drive->capacity64 >= (1UL << 28)))
-		task->tf.command = ATA_CMD_FLUSH_EXT;
+		cmd->tf.command = ATA_CMD_FLUSH_EXT;
 	else
-		task->tf.command = ATA_CMD_FLUSH;
-	task->tf_flags	 = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE |
-			   IDE_TFLAG_DYN;
-	task->data_phase = TASKFILE_NO_DATA;
+		cmd->tf.command = ATA_CMD_FLUSH;
+	cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd->tf_flags = IDE_TFLAG_DYN;
+	cmd->protocol = ATA_PROT_NODATA;
 
 	rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
 	rq->cmd_flags |= REQ_SOFTBARRIER;
-	rq->special = task;
+	rq->special = cmd;
 }
 
 ide_devset_get(multcount, mult_count);
@@ -618,28 +443,44 @@ static int set_multcount(ide_drive_t *drive, int arg)
 	return (drive->mult_count == arg) ? 0 : -EIO;
 }
 
-ide_devset_get(nowerr, nowerr);
+ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR);
 
 static int set_nowerr(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (ide_spin_wait_hwgroup(drive))
-		return -EBUSY;
-	drive->nowerr = arg;
+	if (arg)
+		drive->dev_flags |= IDE_DFLAG_NOWERR;
+	else
+		drive->dev_flags &= ~IDE_DFLAG_NOWERR;
+
 	drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
-	spin_unlock_irq(&ide_lock);
+
 	return 0;
 }
 
+static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
+{
+	struct ide_cmd cmd;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.tf.feature = feature;
+	cmd.tf.nsect   = nsect;
+	cmd.tf.command = ATA_CMD_SET_FEATURES;
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
+
+	return ide_no_data_taskfile(drive, &cmd);
+}
+
 static void update_ordered(ide_drive_t *drive)
 {
 	u16 *id = drive->id;
 	unsigned ordered = QUEUE_ORDERED_NONE;
 	prepare_flush_fn *prep_fn = NULL;
 
-	if (drive->wcache) {
+	if (drive->dev_flags & IDE_DFLAG_WCACHE) {
 		unsigned long long capacity;
 		int barrier;
 		/*
@@ -650,10 +491,12 @@ static void update_ordered(ide_drive_t *drive)
 		 * time we have trimmed the drive capacity if LBA48 is
 		 * not available so we don't need to recheck that.
 		 */
-		capacity = idedisk_capacity(drive);
-		barrier = ide_id_has_flush_cache(id) && !drive->noflush &&
-			(drive->addressing == 0 || capacity <= (1ULL << 28) ||
-			 ide_id_has_flush_cache_ext(id));
+		capacity = ide_gd_capacity(drive);
+		barrier = ata_id_flush_enabled(id) &&
+			(drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 &&
+			((drive->dev_flags & IDE_DFLAG_LBA48) == 0 ||
+			 capacity <= (1ULL << 28) ||
+			 ata_id_flush_ext_enabled(id));
 
 		printk(KERN_INFO "%s: cache flushes %ssupported\n",
 		       drive->name, barrier ? "" : "not ");
@@ -668,25 +511,24 @@ static void update_ordered(ide_drive_t *drive)
 	blk_queue_ordered(drive->queue, ordered, prep_fn);
 }
 
-ide_devset_get(wcache, wcache);
+ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
 
 static int set_wcache(ide_drive_t *drive, int arg)
 {
-	ide_task_t args;
 	int err = 1;
 
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (ide_id_has_flush_cache(drive->id)) {
-		memset(&args, 0, sizeof(ide_task_t));
-		args.tf.feature = arg ?
-			SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
-		args.tf.command = ATA_CMD_SET_FEATURES;
-		args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-		err = ide_no_data_taskfile(drive, &args);
-		if (err == 0)
-			drive->wcache = arg;
+	if (ata_id_flush_enabled(drive->id)) {
+		err = ide_do_setfeature(drive,
+			arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0);
+		if (err == 0) {
+			if (arg)
+				drive->dev_flags |= IDE_DFLAG_WCACHE;
+			else
+				drive->dev_flags &= ~IDE_DFLAG_WCACHE;
+		}
 	}
 
 	update_ordered(drive);
@@ -696,37 +538,35 @@ static int set_wcache(ide_drive_t *drive, int arg)
 
 static int do_idedisk_flushcache(ide_drive_t *drive)
 {
-	ide_task_t args;
+	struct ide_cmd cmd;
 
-	memset(&args, 0, sizeof(ide_task_t));
-	if (ide_id_has_flush_cache_ext(drive->id))
-		args.tf.command = ATA_CMD_FLUSH_EXT;
+	memset(&cmd, 0, sizeof(cmd));
+	if (ata_id_flush_ext_enabled(drive->id))
+		cmd.tf.command = ATA_CMD_FLUSH_EXT;
 	else
-		args.tf.command = ATA_CMD_FLUSH;
-	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	return ide_no_data_taskfile(drive, &args);
+		cmd.tf.command = ATA_CMD_FLUSH;
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
+
+	return ide_no_data_taskfile(drive, &cmd);
 }
 
 ide_devset_get(acoustic, acoustic);
 
 static int set_acoustic(ide_drive_t *drive, int arg)
 {
-	ide_task_t args;
-
 	if (arg < 0 || arg > 254)
 		return -EINVAL;
 
-	memset(&args, 0, sizeof(ide_task_t));
-	args.tf.feature = arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF;
-	args.tf.nsect   = arg;
-	args.tf.command = ATA_CMD_SET_FEATURES;
-	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-	ide_no_data_taskfile(drive, &args);
+	ide_do_setfeature(drive,
+		arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg);
+
 	drive->acoustic = arg;
+
 	return 0;
 }
 
-ide_devset_get(lba_addressing, addressing);
+ide_devset_get_flag(addressing, IDE_DFLAG_LBA48);
 
 /*
  * drive->addressing:
@@ -734,57 +574,42 @@ ide_devset_get(lba_addressing, addressing);
  *	1: 48-bit
  *	2: 48-bit capable doing 28-bit
  */
-static int set_lba_addressing(ide_drive_t *drive, int arg)
+static int set_addressing(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 2)
 		return -EINVAL;
 
-	drive->addressing =  0;
-
-	if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48)
-		return 0;
-
-	if (ata_id_lba48_enabled(drive->id) == 0)
+	if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+	    ata_id_lba48_enabled(drive->id) == 0))
 		return -EIO;
 
-	drive->addressing = arg;
+	if (arg == 2)
+		arg = 0;
+
+	if (arg)
+		drive->dev_flags |= IDE_DFLAG_LBA48;
+	else
+		drive->dev_flags &= ~IDE_DFLAG_LBA48;
 
 	return 0;
 }
 
-#ifdef CONFIG_IDE_PROC_FS
-ide_devset_rw_nolock(acoustic,	0, 254, acoustic);
-ide_devset_rw_nolock(address,	0,   2, lba_addressing);
-ide_devset_rw_nolock(multcount,	0,  16, multcount);
-ide_devset_rw_nolock(nowerr,	0,   1, nowerr);
-ide_devset_rw_nolock(wcache,	0,   1, wcache);
-
-ide_devset_rw(bios_cyl,		0, 65535, bios_cyl);
-ide_devset_rw(bios_head,	0,   255, bios_head);
-ide_devset_rw(bios_sect,	0,    63, bios_sect);
-ide_devset_rw(failures,		0, 65535, failures);
-ide_devset_rw(lun,		0,     7, lun);
-ide_devset_rw(max_failures,	0, 65535, max_failures);
-
-static const struct ide_devset *idedisk_settings[] = {
-	&ide_devset_acoustic,
-	&ide_devset_address,
-	&ide_devset_bios_cyl,
-	&ide_devset_bios_head,
-	&ide_devset_bios_sect,
-	&ide_devset_failures,
-	&ide_devset_lun,
-	&ide_devset_max_failures,
-	&ide_devset_multcount,
-	&ide_devset_nowerr,
-	&ide_devset_wcache,
-	NULL
-};
-#endif
+ide_ext_devset_rw(acoustic, acoustic);
+ide_ext_devset_rw(address, addressing);
+ide_ext_devset_rw(multcount, multcount);
+ide_ext_devset_rw(wcache, wcache);
 
-static void idedisk_setup(ide_drive_t *drive)
+ide_ext_devset_rw_sync(nowerr, nowerr);
+
+static int ide_disk_check(ide_drive_t *drive, const char *s)
+{
+	return 1;
+}
+
+static void ide_disk_setup(ide_drive_t *drive)
 {
 	struct ide_disk_obj *idkp = drive->driver_data;
+	struct request_queue *q = drive->queue;
 	ide_hwif_t *hwif = drive->hwif;
 	u16 *id = drive->id;
 	char *m = (char *)&id[ATA_ID_PROD];
@@ -792,59 +617,44 @@ static void idedisk_setup(ide_drive_t *drive)
 
 	ide_proc_register_driver(drive, idkp->driver);
 
-	if (drive->id_read == 0)
+	if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
 		return;
 
-	if (drive->removable) {
+	if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
 		/*
 		 * Removable disks (eg. SYQUEST); ignore 'WD' drives
 		 */
 		if (m[0] != 'W' || m[1] != 'D')
-			drive->doorlocking = 1;
+			drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
 	}
 
-	(void)set_lba_addressing(drive, 1);
+	(void)set_addressing(drive, 1);
 
-	if (drive->addressing == 1) {
+	if (drive->dev_flags & IDE_DFLAG_LBA48) {
 		int max_s = 2048;
 
 		if (max_s > hwif->rqsize)
 			max_s = hwif->rqsize;
 
-		blk_queue_max_sectors(drive->queue, max_s);
+		blk_queue_max_sectors(q, max_s);
 	}
 
 	printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
-			 drive->queue->max_sectors / 2);
+		q->max_sectors / 2);
 
-	/* calculate drive capacity, and select LBA if possible */
-	init_idedisk_capacity(drive);
-
-	/* limit drive capacity to 137GB if LBA48 cannot be used */
-	if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) {
-		printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
-		       "%llu sectors (%llu MB)\n",
-		       drive->name, (unsigned long long)drive->capacity64,
-		       sectors_to_MB(drive->capacity64));
-		drive->capacity64 = 1ULL << 28;
-	}
+	if (ata_id_is_ssd(id))
+		queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
 
-	if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) {
-		if (drive->capacity64 > 1ULL << 28) {
-			printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
-					 " will be used for accessing sectors "
-					 "> %u\n", drive->name, 1 << 28);
-		} else
-			drive->addressing = 0;
-	}
+	/* calculate drive capacity, and select LBA if possible */
+	ide_disk_get_capacity(drive);
 
 	/*
 	 * if possible, give fdisk access to more of the drive,
 	 * by correcting bios_cyls:
 	 */
-	capacity = idedisk_capacity(drive);
+	capacity = ide_gd_capacity(drive);
 
-	if (!drive->forced_geom) {
+	if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
 		if (ata_id_lba48_enabled(drive->id)) {
 			/* compatibility */
 			drive->bios_sect = 63;
@@ -879,324 +689,63 @@ static void idedisk_setup(ide_drive_t *drive)
 
 	/* write cache enabled? */
 	if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
-		drive->wcache = 1;
+		drive->dev_flags |= IDE_DFLAG_WCACHE;
 
 	set_wcache(drive, 1);
+
+	if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 &&
+	    (drive->head == 0 || drive->head > 16)) {
+		printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n",
+			drive->name, drive->head);
+		drive->dev_flags &= ~IDE_DFLAG_ATTACH;
+	} else
+		drive->dev_flags |= IDE_DFLAG_ATTACH;
 }
 
-static void ide_cacheflush_p(ide_drive_t *drive)
+static void ide_disk_flush(ide_drive_t *drive)
 {
-	if (!drive->wcache || !ide_id_has_flush_cache(drive->id))
+	if (ata_id_flush_enabled(drive->id) == 0 ||
+	    (drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
 		return;
 
 	if (do_idedisk_flushcache(drive))
 		printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
 }
 
-static void ide_disk_remove(ide_drive_t *drive)
-{
-	struct ide_disk_obj *idkp = drive->driver_data;
-	struct gendisk *g = idkp->disk;
-
-	ide_proc_unregister_driver(drive, idkp->driver);
-
-	del_gendisk(g);
-
-	ide_cacheflush_p(drive);
-
-	ide_disk_put(idkp);
-}
-
-static void ide_disk_release(struct kref *kref)
-{
-	struct ide_disk_obj *idkp = to_ide_disk(kref);
-	ide_drive_t *drive = idkp->drive;
-	struct gendisk *g = idkp->disk;
-
-	drive->driver_data = NULL;
-	g->private_data = NULL;
-	put_disk(g);
-	kfree(idkp);
-}
-
-static int ide_disk_probe(ide_drive_t *drive);
-
-/*
- * On HPA drives the capacity needs to be
- * reinitilized on resume otherwise the disk
- * can not be used and a hard reset is required
- */
-static void ide_disk_resume(ide_drive_t *drive)
-{
-	if (ata_id_hpa_enabled(drive->id))
-		init_idedisk_capacity(drive);
-}
-
-static void ide_device_shutdown(ide_drive_t *drive)
-{
-#ifdef	CONFIG_ALPHA
-	/* On Alpha, halt(8) doesn't actually turn the machine off,
-	   it puts you into the sort of firmware monitor. Typically,
-	   it's used to boot another kernel image, so it's not much
-	   different from reboot(8). Therefore, we don't need to
-	   spin down the disk in this case, especially since Alpha
-	   firmware doesn't handle disks in standby mode properly.
-	   On the other hand, it's reasonably safe to turn the power
-	   off when the shutdown process reaches the firmware prompt,
-	   as the firmware initialization takes rather long time -
-	   at least 10 seconds, which should be sufficient for
-	   the disk to expire its write cache. */
-	if (system_state != SYSTEM_POWER_OFF) {
-#else
-	if (system_state == SYSTEM_RESTART) {
-#endif
-		ide_cacheflush_p(drive);
-		return;
-	}
-
-	printk(KERN_INFO "Shutdown: %s\n", drive->name);
-
-	drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND);
-}
-
-static ide_driver_t idedisk_driver = {
-	.gen_driver = {
-		.owner		= THIS_MODULE,
-		.name		= "ide-disk",
-		.bus		= &ide_bus_type,
-	},
-	.probe			= ide_disk_probe,
-	.remove			= ide_disk_remove,
-	.resume			= ide_disk_resume,
-	.shutdown		= ide_device_shutdown,
-	.version		= IDEDISK_VERSION,
-	.media			= ide_disk,
-	.do_request		= ide_do_rw_disk,
-	.end_request		= ide_end_request,
-	.error			= __ide_error,
-#ifdef CONFIG_IDE_PROC_FS
-	.proc			= idedisk_proc,
-	.settings		= idedisk_settings,
-#endif
-};
-
-static int idedisk_set_doorlock(ide_drive_t *drive, int on)
-{
-	ide_task_t task;
-
-	memset(&task, 0, sizeof(task));
-	task.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
-	task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-
-	return ide_no_data_taskfile(drive, &task);
-}
-
-static int idedisk_open(struct inode *inode, struct file *filp)
-{
-	struct gendisk *disk = inode->i_bdev->bd_disk;
-	struct ide_disk_obj *idkp;
-	ide_drive_t *drive;
-
-	idkp = ide_disk_get(disk);
-	if (idkp == NULL)
-		return -ENXIO;
-
-	drive = idkp->drive;
-
-	idkp->openers++;
-
-	if (drive->removable && idkp->openers == 1) {
-		check_disk_change(inode->i_bdev);
-		/*
-		 * Ignore the return code from door_lock,
-		 * since the open() has already succeeded,
-		 * and the door_lock is irrelevant at this point.
-		 */
-		if (drive->doorlocking && idedisk_set_doorlock(drive, 1))
-			drive->doorlocking = 0;
-	}
-	return 0;
-}
-
-static int idedisk_release(struct inode *inode, struct file *filp)
-{
-	struct gendisk *disk = inode->i_bdev->bd_disk;
-	struct ide_disk_obj *idkp = ide_disk_g(disk);
-	ide_drive_t *drive = idkp->drive;
-
-	if (idkp->openers == 1)
-		ide_cacheflush_p(drive);
-
-	if (drive->removable && idkp->openers == 1) {
-		if (drive->doorlocking && idedisk_set_doorlock(drive, 0))
-			drive->doorlocking = 0;
-	}
-
-	idkp->openers--;
-
-	ide_disk_put(idkp);
-
-	return 0;
-}
-
-static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
 {
-	struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
-	ide_drive_t *drive = idkp->drive;
-
-	geo->heads = drive->bios_head;
-	geo->sectors = drive->bios_sect;
-	geo->cylinders = (u16)drive->bios_cyl; /* truncate */
 	return 0;
 }
 
-static int idedisk_ioctl(struct inode *inode, struct file *file,
-			unsigned int cmd, unsigned long arg)
-{
-	unsigned long flags;
-	struct block_device *bdev = inode->i_bdev;
-	struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
-	ide_drive_t *drive = idkp->drive;
-	int err, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
-
-	switch (cmd) {
-	case HDIO_GET_ADDRESS:	 getfunc = get_lba_addressing;	goto read_val;
-	case HDIO_GET_MULTCOUNT: getfunc = get_multcount;	goto read_val;
-	case HDIO_GET_NOWERR:	 getfunc = get_nowerr;		goto read_val;
-	case HDIO_GET_WCACHE:	 getfunc = get_wcache;		goto read_val;
-	case HDIO_GET_ACOUSTIC:	 getfunc = get_acoustic;	goto read_val;
-	case HDIO_SET_ADDRESS:	 setfunc = set_lba_addressing;	goto set_val;
-	case HDIO_SET_MULTCOUNT: setfunc = set_multcount;	goto set_val;
-	case HDIO_SET_NOWERR:	 setfunc = set_nowerr;		goto set_val;
-	case HDIO_SET_WCACHE:	 setfunc = set_wcache;		goto set_val;
-	case HDIO_SET_ACOUSTIC:	 setfunc = set_acoustic;	goto set_val;
-	}
-
-	return generic_ide_ioctl(drive, file, bdev, cmd, arg);
-
-read_val:
-	mutex_lock(&ide_setting_mtx);
-	spin_lock_irqsave(&ide_lock, flags);
-	err = getfunc(drive);
-	spin_unlock_irqrestore(&ide_lock, flags);
-	mutex_unlock(&ide_setting_mtx);
-	return err >= 0 ? put_user(err, (long __user *)arg) : err;
-
-set_val:
-	if (bdev != bdev->bd_contains)
-		err = -EINVAL;
-	else {
-		if (!capable(CAP_SYS_ADMIN))
-			err = -EACCES;
-		else {
-			mutex_lock(&ide_setting_mtx);
-			err = setfunc(drive, arg);
-			mutex_unlock(&ide_setting_mtx);
-		}
-	}
-	return err;
-}
-
-static int idedisk_media_changed(struct gendisk *disk)
+static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
+				 int on)
 {
-	struct ide_disk_obj *idkp = ide_disk_g(disk);
-	ide_drive_t *drive = idkp->drive;
+	struct ide_cmd cmd;
+	int ret;
 
-	/* do not scan partitions twice if this is a removable device */
-	if (drive->attach) {
-		drive->attach = 0;
+	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
 		return 0;
-	}
-	/* if removable, always assume it was changed */
-	return drive->removable;
-}
-
-static int idedisk_revalidate_disk(struct gendisk *disk)
-{
-	struct ide_disk_obj *idkp = ide_disk_g(disk);
-	set_capacity(disk, idedisk_capacity(idkp->drive));
-	return 0;
-}
-
-static struct block_device_operations idedisk_ops = {
-	.owner			= THIS_MODULE,
-	.open			= idedisk_open,
-	.release		= idedisk_release,
-	.ioctl			= idedisk_ioctl,
-	.getgeo			= idedisk_getgeo,
-	.media_changed		= idedisk_media_changed,
-	.revalidate_disk	= idedisk_revalidate_disk
-};
-
-MODULE_DESCRIPTION("ATA DISK Driver");
-
-static int ide_disk_probe(ide_drive_t *drive)
-{
-	struct ide_disk_obj *idkp;
-	struct gendisk *g;
-
-	/* strstr("foo", "") is non-NULL */
-	if (!strstr("ide-disk", drive->driver_req))
-		goto failed;
-
-	if (drive->media != ide_disk)
-		goto failed;
 
-	idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
-	if (!idkp)
-		goto failed;
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
+	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
 
-	g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif));
-	if (!g)
-		goto out_free_idkp;
+	ret = ide_no_data_taskfile(drive, &cmd);
 
-	ide_init_disk(g, drive);
+	if (ret)
+		drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
 
-	kref_init(&idkp->kref);
-
-	idkp->drive = drive;
-	idkp->driver = &idedisk_driver;
-	idkp->disk = g;
-
-	g->private_data = &idkp->driver;
-
-	drive->driver_data = idkp;
-
-	idedisk_setup(drive);
-	if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
-		printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n",
-			drive->name, drive->head);
-		drive->attach = 0;
-	} else
-		drive->attach = 1;
-
-	g->minors = IDE_DISK_MINORS;
-	g->driverfs_dev = &drive->gendev;
-	g->flags |= GENHD_FL_EXT_DEVT;
-	if (drive->removable)
-		g->flags |= GENHD_FL_REMOVABLE;
-	set_capacity(g, idedisk_capacity(drive));
-	g->fops = &idedisk_ops;
-	add_disk(g);
-	return 0;
-
-out_free_idkp:
-	kfree(idkp);
-failed:
-	return -ENODEV;
+	return ret;
 }
 
-static void __exit idedisk_exit(void)
-{
-	driver_unregister(&idedisk_driver.gen_driver);
-}
-
-static int __init idedisk_init(void)
-{
-	return driver_register(&idedisk_driver.gen_driver);
-}
-
-MODULE_ALIAS("ide:*m-disk*");
-module_init(idedisk_init);
-module_exit(idedisk_exit);
-MODULE_LICENSE("GPL");
+const struct ide_disk_ops ide_ata_disk_ops = {
+	.check		= ide_disk_check,
+	.get_capacity	= ide_disk_get_capacity,
+	.setup		= ide_disk_setup,
+	.flush		= ide_disk_flush,
+	.init_media	= ide_disk_init_media,
+	.set_doorlock	= ide_disk_set_doorlock,
+	.do_request	= ide_do_rw_disk,
+	.ioctl		= ide_disk_ioctl,
+};