1 files changed, 180 insertions, 406 deletions

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 68b9cf0138b..3853bde8eed 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -30,10 +30,8 @@
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/leds.h>
-
-#define _IDE_DISK
-
 #include <linux/ide.h>
+#include <linux/hdreg.h>
 
 #include <asm/byteorder.h>
 #include <asm/irq.h>
@@ -41,21 +39,18 @@
 #include <asm/io.h>
 #include <asm/div64.h>
 
-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 */
-};
+#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
+#define IDE_DISK_MINORS		(1 << PARTN_BITS)
+#else
+#define IDE_DISK_MINORS		0
+#endif
+
+#include "ide-disk.h"
 
 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)
@@ -84,68 +79,19 @@ static void ide_disk_put(struct ide_disk_obj *idkp)
 	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(struct hd_driveid *id)
-{
-	unsigned long lba_sects, chs_sects, head, tail;
-
-	/* No non-LBA info .. so valid! */
-	if (id->cyls == 0)
-		return 1;
-
-	/*
-	 * 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->cyls == 16383
-	     || (id->cyls == 4092 && id->cur_cyls == 16383)) &&
-	    id->sectors == 63 &&
-	    (id->heads == 15 || id->heads == 16) &&
-	    (id->lba_capacity >= 16383*63*id->heads))
-		return 1;
-
-	lba_sects   = id->lba_capacity;
-	chs_sects   = id->cyls * id->heads * 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) {
-		id->lba_capacity = lba_sects;
-		return 1;	/* lba_capacity is (now) good */
-	}
-
-	return 0;	/* lba_capacity value may be bad */
-}
-
 static const u8 ide_rw_cmds[] = {
-	WIN_MULTREAD,
-	WIN_MULTWRITE,
-	WIN_MULTREAD_EXT,
-	WIN_MULTWRITE_EXT,
-	WIN_READ,
-	WIN_WRITE,
-	WIN_READ_EXT,
-	WIN_WRITE_EXT,
-	WIN_READDMA,
-	WIN_WRITEDMA,
-	WIN_READDMA_EXT,
-	WIN_WRITEDMA_EXT,
+	ATA_CMD_READ_MULTI,
+	ATA_CMD_WRITE_MULTI,
+	ATA_CMD_READ_MULTI_EXT,
+	ATA_CMD_WRITE_MULTI_EXT,
+	ATA_CMD_PIO_READ,
+	ATA_CMD_PIO_WRITE,
+	ATA_CMD_PIO_READ_EXT,
+	ATA_CMD_PIO_WRITE_EXT,
+	ATA_CMD_READ,
+	ATA_CMD_WRITE,
+	ATA_CMD_READ_EXT,
+	ATA_CMD_WRITE_EXT,
 };
 
 static const u8 ide_data_phases[] = {
@@ -185,9 +131,9 @@ 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;
 	u16 nsectors		= (u16)rq->nr_sectors;
-	u8 lba48		= (drive->addressing == 1) ? 1 : 0;
+	u8 lba48		= !!(drive->dev_flags & IDE_DFLAG_LBA48);
+	u8 dma			= !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
 	ide_task_t		task;
 	struct ide_taskfile	*tf = &task.tf;
 	ide_startstop_t		rc;
@@ -207,7 +153,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 	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);
@@ -232,6 +178,8 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 			tf->lbah   = block >>= 8;
 			tf->device = (block >> 8) & 0xf;
 		}
+
+		tf->device |= ATA_LBA;
 	} else {
 		unsigned int sect, head, cyl, track;
 
@@ -282,7 +230,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 {
 	ide_hwif_t *hwif = HWIF(drive);
 
-	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");
@@ -316,9 +264,9 @@ static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
 	/* Create IDE/ATA command request structure */
 	memset(&args, 0, sizeof(ide_task_t));
 	if (lba48)
-		tf->command = WIN_READ_NATIVE_MAX_EXT;
+		tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
 	else
-		tf->command = WIN_READ_NATIVE_MAX;
+		tf->command = ATA_CMD_READ_NATIVE_MAX;
 	tf->device  = ATA_LBA;
 	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
 	if (lba48)
@@ -353,10 +301,10 @@ static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
 		tf->hob_lbal = (addr_req >>= 8) & 0xff;
 		tf->hob_lbam = (addr_req >>= 8) & 0xff;
 		tf->hob_lbah = (addr_req >>= 8) & 0xff;
-		tf->command  = WIN_SET_MAX_EXT;
+		tf->command  = ATA_CMD_SET_MAX_EXT;
 	} else {
 		tf->device   = (addr_req >>= 8) & 0x0f;
-		tf->command  = WIN_SET_MAX;
+		tf->command  = ATA_CMD_SET_MAX;
 	}
 	tf->device |= ATA_LBA;
 	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
@@ -379,25 +327,6 @@ static unsigned long long sectors_to_MB(unsigned long long n)
 }
 
 /*
- * Bits 10 of command_set_1 and cfs_enable_1 must be equal,
- * so on non-buggy drives we need test only one.
- * However, we should also check whether these fields are valid.
- */
-static inline int idedisk_supports_hpa(const struct hd_driveid *id)
-{
-	return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400);
-}
-
-/*
- * The same here.
- */
-static inline int idedisk_supports_lba48(const struct hd_driveid *id)
-{
-	return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400)
-	       && id->lba_capacity_2;
-}
-
-/*
  * Some disks report total number of sectors instead of
  * maximum sector address.  We list them here.
  */
@@ -411,7 +340,7 @@ static const struct drive_list_entry hpa_list[] = {
 static void idedisk_check_hpa(ide_drive_t *drive)
 {
 	unsigned long long capacity, set_max;
-	int lba48 = idedisk_supports_lba48(drive->id);
+	int lba48 = ata_id_lba48_enabled(drive->id);
 
 	capacity = drive->capacity64;
 
@@ -445,155 +374,42 @@ static void idedisk_check_hpa(ide_drive_t *drive)
 	}
 }
 
-/*
- * Compute drive->capacity, the full capacity of the drive
- * Called with drive->id != NULL.
- *
- * To compute capacity, this uses either of
- *
- *    1. CHS value set by user       (whatever user sets will be trusted)
- *    2. LBA value from target drive (require new ATA feature)
- *    3. LBA value from system BIOS  (new one is OK, old one may break)
- *    4. CHS value from system BIOS  (traditional style)
- *
- * in above order (i.e., if value of higher priority is available,
- * reset will be ignored).
- */
 static void init_idedisk_capacity(ide_drive_t *drive)
 {
-	struct hd_driveid *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 = idedisk_supports_hpa(id);
+	u16 *id = drive->id;
+	int lba;
 
-	if (idedisk_supports_lba48(id)) {
+	if (ata_id_lba48_enabled(id)) {
 		/* drive speaks 48-bit LBA */
-		drive->select.b.lba = 1;
-		drive->capacity64 = id->lba_capacity_2;
-		if (hpa)
-			idedisk_check_hpa(drive);
-	} else if ((id->capability & 2) && lba_capacity_is_ok(id)) {
+		lba = 1;
+		drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
+	} else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
 		/* drive speaks 28-bit LBA */
-		drive->select.b.lba = 1;
-		drive->capacity64 = id->lba_capacity;
-		if (hpa)
-			idedisk_check_hpa(drive);
+		lba = 1;
+		drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
 	} 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 - drive->sect0;
-}
-
-#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 = SMART_ENABLE;
-	tf->lbam    = SMART_LCYL_PASS;
-	tf->lbah    = SMART_HCYL_PASS;
-	tf->command = WIN_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    = SMART_LCYL_PASS;
-	tf->lbah    = SMART_HCYL_PASS;
-	tf->command = WIN_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->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_WORDS * 4);
-		page = out;
-		do {
-			out += sprintf(out, "%04x%c", le16_to_cpu(*val),
-				       (++i & 7) ? ' ' : '\n');
-			val += 1;
-		} while (i < (SECTOR_WORDS * 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);
 }
 
-static int proc_idedisk_read_sv
-	(char *page, char **start, off_t off, int count, int *eof, void *data)
+sector_t ide_disk_capacity(ide_drive_t *drive)
 {
-	return proc_idedisk_read_smart(page, start, off, count, eof, data,
-				       SMART_READ_VALUES);
+	return drive->capacity64;
 }
 
-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,
-				       SMART_READ_THRESHOLDS);
-}
-
-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;
@@ -603,11 +419,11 @@ static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
 	BUG_ON(task == NULL);
 
 	memset(task, 0, sizeof(*task));
-	if (ide_id_has_flush_cache_ext(drive->id) &&
+	if (ata_id_flush_ext_enabled(drive->id) &&
 	    (drive->capacity64 >= (1UL << 28)))
-		task->tf.command = WIN_FLUSH_CACHE_EXT;
+		task->tf.command = ATA_CMD_FLUSH_EXT;
 	else
-		task->tf.command = WIN_FLUSH_CACHE;
+		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;
@@ -617,6 +433,8 @@ static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
 	rq->special = task;
 }
 
+ide_devset_get(multcount, mult_count);
+
 /*
  * This is tightly woven into the driver->do_special can not touch.
  * DON'T do it again until a total personality rewrite is committed.
@@ -626,7 +444,7 @@ static int set_multcount(ide_drive_t *drive, int arg)
 	struct request *rq;
 	int error;
 
-	if (arg < 0 || arg > drive->id->max_multsect)
+	if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
 		return -EINVAL;
 
 	if (drive->special.b.set_multmode)
@@ -643,26 +461,43 @@ static int set_multcount(ide_drive_t *drive, int arg)
 	return (drive->mult_count == arg) ? 0 : -EIO;
 }
 
+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)
+{
+	ide_task_t task;
+
+	memset(&task, 0, sizeof(task));
+	task.tf.feature = feature;
+	task.tf.nsect   = nsect;
+	task.tf.command = ATA_CMD_SET_FEATURES;
+	task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+
+	return ide_no_data_taskfile(drive, &task);
+}
+
 static void update_ordered(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	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;
 		/*
@@ -673,10 +508,12 @@ 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_disk_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 ");
@@ -691,23 +528,24 @@ static void update_ordered(ide_drive_t *drive)
 	blk_queue_ordered(drive->queue, ordered, prep_fn);
 }
 
-static int write_cache(ide_drive_t *drive, int arg)
+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_EN_WCACHE : SETFEATURES_DIS_WCACHE;
-		args.tf.command = WIN_SETFEATURES;
-		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);
@@ -720,108 +558,88 @@ static int do_idedisk_flushcache(ide_drive_t *drive)
 	ide_task_t args;
 
 	memset(&args, 0, sizeof(ide_task_t));
-	if (ide_id_has_flush_cache_ext(drive->id))
-		args.tf.command = WIN_FLUSH_CACHE_EXT;
+	if (ata_id_flush_ext_enabled(drive->id))
+		args.tf.command = ATA_CMD_FLUSH_EXT;
 	else
-		args.tf.command = WIN_FLUSH_CACHE;
+		args.tf.command = ATA_CMD_FLUSH;
 	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
 	return ide_no_data_taskfile(drive, &args);
 }
 
+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_EN_AAM : SETFEATURES_DIS_AAM;
-	args.tf.nsect   = arg;
-	args.tf.command = WIN_SETFEATURES;
-	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_flag(addressing, IDE_DFLAG_LBA48);
+
 /*
  * drive->addressing:
  *	0: 28-bit
  *	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 (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+	    ata_id_lba48_enabled(drive->id) == 0))
+		return -EIO;
 
-	if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48)
-		return 0;
+	if (arg == 2)
+		arg = 0;
+
+	if (arg)
+		drive->dev_flags |= IDE_DFLAG_LBA48;
+	else
+		drive->dev_flags &= ~IDE_DFLAG_LBA48;
 
-	if (!idedisk_supports_lba48(drive->id))
-		return -EIO;
-	drive->addressing = arg;
 	return 0;
 }
 
-#ifdef CONFIG_IDE_PROC_FS
-static void idedisk_add_settings(ide_drive_t *drive)
-{
-	struct hd_driveid *id = drive->id;
-
-	ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1,
-			&drive->bios_cyl, NULL);
-	ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
-			&drive->bios_head, NULL);
-	ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1,
-			&drive->bios_sect, NULL);
-	ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1,
-			&drive->addressing, set_lba_addressing);
-	ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0,
-			id->max_multsect, 1, 1, &drive->mult_count,
-			set_multcount);
-	ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
-			&drive->nowerr, set_nowerr);
-	ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1,
-			&drive->lun, NULL);
-	ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
-			&drive->wcache, write_cache);
-	ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1,
-			&drive->acoustic, set_acoustic);
-	ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1,
-			&drive->failures, NULL);
-	ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535,
-			1, 1, &drive->max_failures, NULL);
-}
-#else
-static inline void idedisk_add_settings(ide_drive_t *drive) { ; }
-#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);
+
+ide_ext_devset_rw_sync(nowerr, nowerr);
 
 static void idedisk_setup(ide_drive_t *drive)
 {
+	struct ide_disk_obj *idkp = drive->driver_data;
 	ide_hwif_t *hwif = drive->hwif;
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
+	char *m = (char *)&id[ATA_ID_PROD];
 	unsigned long long capacity;
 
-	idedisk_add_settings(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 (id->model[0] != 'W' || id->model[1] != 'D')
-			drive->doorlocking = 1;
+		if (m[0] != 'W' || m[1] != 'D')
+			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)
@@ -837,7 +655,8 @@ static void idedisk_setup(ide_drive_t *drive)
 	init_idedisk_capacity(drive);
 
 	/* limit drive capacity to 137GB if LBA48 cannot be used */
-	if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) {
+	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,
@@ -845,24 +664,24 @@ static void idedisk_setup(ide_drive_t *drive)
 		drive->capacity64 = 1ULL << 28;
 	}
 
-	if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) {
+	if ((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->addressing = 0;
+			drive->dev_flags &= ~IDE_DFLAG_LBA48;
 	}
 
 	/*
 	 * if possible, give fdisk access to more of the drive,
 	 * by correcting bios_cyls:
 	 */
-	capacity = idedisk_capacity(drive);
-
-	if (!drive->forced_geom) {
+	capacity = ide_disk_capacity(drive);
 
-		if (idedisk_supports_lba48(drive->id)) {
+	if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
+		if (ata_id_lba48_enabled(drive->id)) {
 			/* compatibility */
 			drive->bios_sect = 63;
 			drive->bios_head = 255;
@@ -888,22 +707,23 @@ static void idedisk_setup(ide_drive_t *drive)
 			 drive->name, capacity, sectors_to_MB(capacity));
 
 	/* Only print cache size when it was specified */
-	if (id->buf_size)
-		printk(KERN_CONT " w/%dKiB Cache", id->buf_size / 2);
+	if (id[ATA_ID_BUF_SIZE])
+		printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2);
 
 	printk(KERN_CONT ", CHS=%d/%d/%d\n",
 			 drive->bios_cyl, drive->bios_head, drive->bios_sect);
 
 	/* write cache enabled? */
-	if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5)))
-		drive->wcache = 1;
+	if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
+		drive->dev_flags |= IDE_DFLAG_WCACHE;
 
-	write_cache(drive, 1);
+	set_wcache(drive, 1);
 }
 
 static void ide_cacheflush_p(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))
@@ -945,7 +765,7 @@ static int ide_disk_probe(ide_drive_t *drive);
  */
 static void ide_disk_resume(ide_drive_t *drive)
 {
-	if (idedisk_supports_hpa(drive->id))
+	if (ata_id_hpa_enabled(drive->id))
 		init_idedisk_capacity(drive);
 }
 
@@ -987,13 +807,12 @@ static ide_driver_t idedisk_driver = {
 	.resume			= ide_disk_resume,
 	.shutdown		= ide_device_shutdown,
 	.version		= IDEDISK_VERSION,
-	.media			= ide_disk,
-	.supports_dsc_overlap	= 0,
 	.do_request		= ide_do_rw_disk,
 	.end_request		= ide_end_request,
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
-	.proc			= idedisk_proc,
+	.proc			= ide_disk_proc,
+	.settings		= ide_disk_settings,
 #endif
 };
 
@@ -1002,7 +821,7 @@ static int idedisk_set_doorlock(ide_drive_t *drive, int on)
 	ide_task_t task;
 
 	memset(&task, 0, sizeof(task));
-	task.tf.command = on ? WIN_DOORLOCK : WIN_DOORUNLOCK;
+	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);
@@ -1022,15 +841,16 @@ static int idedisk_open(struct inode *inode, struct file *filp)
 
 	idkp->openers++;
 
-	if (drive->removable && idkp->openers == 1) {
+	if ((drive->dev_flags & IDE_DFLAG_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;
+		if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) &&
+		    idedisk_set_doorlock(drive, 1))
+			drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
 	}
 	return 0;
 }
@@ -1044,9 +864,10 @@ static int idedisk_release(struct inode *inode, struct file *filp)
 	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;
+	if ((drive->dev_flags & IDE_DFLAG_REMOVABLE) && idkp->openers == 1) {
+		if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) &&
+		    idedisk_set_doorlock(drive, 0))
+			drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
 	}
 
 	idkp->openers--;
@@ -1067,72 +888,25 @@ static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 	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, (*setfunc)(ide_drive_t *, int);
-	u8 *val;
-
-	switch (cmd) {
-	case HDIO_GET_ADDRESS:	 val = &drive->addressing;	goto read_val;
-	case HDIO_GET_MULTCOUNT: val = &drive->mult_count;	goto read_val;
-	case HDIO_GET_NOWERR:	 val = &drive->nowerr;		goto read_val;
-	case HDIO_GET_WCACHE:	 val = &drive->wcache;		goto read_val;
-	case HDIO_GET_ACOUSTIC:	 val = &drive->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 = write_cache;		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 = *val;
-	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)
 {
 	struct ide_disk_obj *idkp = ide_disk_g(disk);
 	ide_drive_t *drive = idkp->drive;
 
 	/* do not scan partitions twice if this is a removable device */
-	if (drive->attach) {
-		drive->attach = 0;
+	if (drive->dev_flags & IDE_DFLAG_ATTACH) {
+		drive->dev_flags &= ~IDE_DFLAG_ATTACH;
 		return 0;
 	}
+
 	/* if removable, always assume it was changed */
-	return drive->removable;
+	return !!(drive->dev_flags & IDE_DFLAG_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));
+	set_capacity(disk, ide_disk_capacity(idkp->drive));
 	return 0;
 }
 
@@ -1140,7 +914,7 @@ static struct block_device_operations idedisk_ops = {
 	.owner			= THIS_MODULE,
 	.open			= idedisk_open,
 	.release		= idedisk_release,
-	.ioctl			= idedisk_ioctl,
+	.ioctl			= ide_disk_ioctl,
 	.getgeo			= idedisk_getgeo,
 	.media_changed		= idedisk_media_changed,
 	.revalidate_disk	= idedisk_revalidate_disk
@@ -1156,8 +930,7 @@ static int ide_disk_probe(ide_drive_t *drive)
 	/* strstr("foo", "") is non-NULL */
 	if (!strstr("ide-disk", drive->driver_req))
 		goto failed;
-	if (!drive->present)
-		goto failed;
+
 	if (drive->media != ide_disk)
 		goto failed;
 
@@ -1165,15 +938,12 @@ static int ide_disk_probe(ide_drive_t *drive)
 	if (!idkp)
 		goto failed;
 
-	g = alloc_disk_node(1 << PARTN_BITS,
-			hwif_to_node(drive->hwif));
+	g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif));
 	if (!g)
 		goto out_free_idkp;
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &idedisk_driver);
-
 	kref_init(&idkp->kref);
 
 	idkp->drive = drive;
@@ -1185,17 +955,20 @@ static int ide_disk_probe(ide_drive_t *drive)
 	drive->driver_data = idkp;
 
 	idedisk_setup(drive);
-	if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
+	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->attach = 0;
+		drive->dev_flags &= ~IDE_DFLAG_ATTACH;
 	} else
-		drive->attach = 1;
+		drive->dev_flags |= IDE_DFLAG_ATTACH;
 
-	g->minors = 1 << PARTN_BITS;
+	g->minors = IDE_DISK_MINORS;
 	g->driverfs_dev = &drive->gendev;
-	g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
-	set_capacity(g, idedisk_capacity(drive));
+	g->flags |= GENHD_FL_EXT_DEVT;
+	if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
+		g->flags = GENHD_FL_REMOVABLE;
+	set_capacity(g, ide_disk_capacity(drive));
 	g->fops = &idedisk_ops;
 	add_disk(g);
 	return 0;
@@ -1217,6 +990,7 @@ static int __init idedisk_init(void)
 }
 
 MODULE_ALIAS("ide:*m-disk*");
+MODULE_ALIAS("ide-disk");
 module_init(idedisk_init);
 module_exit(idedisk_exit);
 MODULE_LICENSE("GPL");