From f615b48cc7df7cac3865ec76ac1a5bb04d3e07f4 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 25 Aug 2008 19:47:24 +0900
Subject: sd/ide-disk: apply extended minors to sd and ide

Update sd and ide-disk such that they can take advantage of extended
minors.

ide-disk already has 64 minors per device and currently doesn't use
extended minors although after this patch it can be turned on by
simply tweaking constants.

sd only had 16 minors per device causing problems on certain peculiar
configurations.  This patch lifts the restriction and enables it to
use upto 64 minors.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 drivers/ide/ide-disk.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 07ef88bd109b..7a88de9ada29 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -41,6 +41,10 @@
 #include <asm/io.h>
 #include <asm/div64.h>
 
+#define IDE_DISK_PARTS		(1 << PARTN_BITS)
+#define IDE_DISK_MINORS		IDE_DISK_PARTS
+#define IDE_DISK_EXT_MINORS	(IDE_DISK_PARTS - IDE_DISK_MINORS)
+
 struct ide_disk_obj {
 	ide_drive_t	*drive;
 	ide_driver_t	*driver;
@@ -1151,8 +1155,8 @@ 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_ext_node(IDE_DISK_MINORS, IDE_DISK_EXT_MINORS,
+				hwif_to_node(drive->hwif));
 	if (!g)
 		goto out_free_idkp;
 
@@ -1178,7 +1182,8 @@ static int ide_disk_probe(ide_drive_t *drive)
 	} else
 		drive->attach = 1;
 
-	g->minors = 1 << PARTN_BITS;
+	g->minors = IDE_DISK_MINORS;
+	g->ext_minors = IDE_DISK_EXT_MINORS;
 	g->driverfs_dev = &drive->gendev;
 	g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
 	set_capacity(g, idedisk_capacity(drive));
-- 
cgit v1.2.3


From 870d6656126add8e383645732b03df2b7ccd4f94 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 25 Aug 2008 19:47:25 +0900
Subject: block: implement CONFIG_DEBUG_BLOCK_EXT_DEVT

Extended devt introduces non-contiguos device numbers.  This patch
implements a debug option which forces most devt allocations to be
from the extended area and spreads them out.  This is enabled by
default if DEBUG_KERNEL is set and achieves...

1. Detects code paths in kernel or userland which expect predetermined
   consecutive device numbers.

2. When something goes wrong, avoid corruption as adding to the minor
   of earlier partition won't lead to the wrong but valid device.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 block/genhd.c          | 38 +++++++++++++++++++++++++++++++++++---
 drivers/ide/ide-disk.c |  6 ++++++
 drivers/scsi/sd.c      |  6 ++++++
 lib/Kconfig.debug      | 16 ++++++++++++++++
 4 files changed, 63 insertions(+), 3 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/block/genhd.c b/block/genhd.c
index ee4b13520e59..67e5a59ced2a 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -298,6 +298,38 @@ EXPORT_SYMBOL(unregister_blkdev);
 
 static struct kobj_map *bdev_map;
 
+/**
+ * blk_mangle_minor - scatter minor numbers apart
+ * @minor: minor number to mangle
+ *
+ * Scatter consecutively allocated @minor number apart if MANGLE_DEVT
+ * is enabled.  Mangling twice gives the original value.
+ *
+ * RETURNS:
+ * Mangled value.
+ *
+ * CONTEXT:
+ * Don't care.
+ */
+static int blk_mangle_minor(int minor)
+{
+#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT
+	int i;
+
+	for (i = 0; i < MINORBITS / 2; i++) {
+		int low = minor & (1 << i);
+		int high = minor & (1 << (MINORBITS - 1 - i));
+		int distance = MINORBITS - 1 - 2 * i;
+
+		minor ^= low | high;	/* clear both bits */
+		low <<= distance;	/* swap the positions */
+		high >>= distance;
+		minor |= low | high;	/* and set */
+	}
+#endif
+	return minor;
+}
+
 /**
  * blk_alloc_devt - allocate a dev_t for a partition
  * @part: partition to allocate dev_t for
@@ -339,7 +371,7 @@ int blk_alloc_devt(struct hd_struct *part, dev_t *devt)
 		return -EBUSY;
 	}
 
-	*devt = MKDEV(BLOCK_EXT_MAJOR, idx);
+	*devt = MKDEV(BLOCK_EXT_MAJOR, blk_mangle_minor(idx));
 	return 0;
 }
 
@@ -361,7 +393,7 @@ void blk_free_devt(dev_t devt)
 
 	if (MAJOR(devt) == BLOCK_EXT_MAJOR) {
 		mutex_lock(&ext_devt_mutex);
-		idr_remove(&ext_devt_idr, MINOR(devt));
+		idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
 		mutex_unlock(&ext_devt_mutex);
 	}
 }
@@ -473,7 +505,7 @@ struct gendisk *get_gendisk(dev_t devt, int *partno)
 		struct hd_struct *part;
 
 		mutex_lock(&ext_devt_mutex);
-		part = idr_find(&ext_devt_idr, MINOR(devt));
+		part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
 		if (part && get_disk(part_to_disk(part))) {
 			*partno = part->partno;
 			disk = part_to_disk(part);
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 7a88de9ada29..a072df5053ae 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -42,7 +42,13 @@
 #include <asm/div64.h>
 
 #define IDE_DISK_PARTS		(1 << PARTN_BITS)
+
+#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define IDE_DISK_MINORS		IDE_DISK_PARTS
+#else
+#define IDE_DISK_MINORS		1
+#endif
+
 #define IDE_DISK_EXT_MINORS	(IDE_DISK_PARTS - IDE_DISK_MINORS)
 
 struct ide_disk_obj {
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d1bb0e1d2d28..280d231a86ed 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -87,7 +87,13 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD);
 MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
 
 #define SD_PARTS	64
+
+#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define SD_MINORS	16
+#else
+#define SD_MINORS	1
+#endif
+
 #define SD_EXT_MINORS	(SD_PARTS - SD_MINORS)
 
 static int  sd_revalidate_disk(struct gendisk *);
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0b504814e378..5a536f703a83 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -624,6 +624,22 @@ config BACKTRACE_SELF_TEST
 
 	  Say N if you are unsure.
 
+config DEBUG_BLOCK_EXT_DEVT
+        bool "Force extended block device numbers and spread them"
+	depends on DEBUG_KERNEL
+	depends on BLOCK
+	default y
+	help
+	  Conventionally, block device numbers are allocated from
+	  predetermined contiguous area.  However, extended block area
+	  may introduce non-contiguous block device numbers.  This
+	  option forces most block device numbers to be allocated from
+	  the extended space and spreads them to discover kernel or
+	  userland code paths which assume predetermined contiguous
+	  device number allocation.
+
+	  Say N if you are unsure.
+
 config LKDTM
 	tristate "Linux Kernel Dump Test Tool Module"
 	depends on DEBUG_KERNEL
-- 
cgit v1.2.3


From 689d6fac40b41c7bf154f362deaf442548e4dc81 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 25 Aug 2008 19:56:16 +0900
Subject: block: replace @ext_minors with GENHD_FL_EXT_DEVT

With previous changes, it's meaningless to limit the number of
partitions.  Replace @ext_minors with GENHD_FL_EXT_DEVT such that
setting the flag allows the disk to have maximum number of allowed
partitions (only limited by the number of entries in parsed_partitions
as determined by MAX_PART constant).

This kills not-too-pretty alloc_disk_ext[_node]() functions and makes
@minors parameter to alloc_disk[_node]() unnecessary.  The parameter
is left alone to avoid disturbing the users.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 block/genhd.c          | 16 +---------------
 drivers/ide/ide-disk.c | 14 +++++---------
 drivers/scsi/sd.c      |  9 ++-------
 fs/partitions/check.h  |  4 +---
 include/linux/genhd.h  | 16 ++++++++--------
 5 files changed, 17 insertions(+), 42 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/block/genhd.c b/block/genhd.c
index c2b14aa69d58..eedab5b4685b 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1024,18 +1024,9 @@ struct gendisk *alloc_disk(int minors)
 {
 	return alloc_disk_node(minors, -1);
 }
+EXPORT_SYMBOL(alloc_disk);
 
 struct gendisk *alloc_disk_node(int minors, int node_id)
-{
-	return alloc_disk_ext_node(minors, 0, node_id);
-}
-
-struct gendisk *alloc_disk_ext(int minors, int ext_minors)
-{
-	return alloc_disk_ext_node(minors, ext_minors, -1);
-}
-
-struct gendisk *alloc_disk_ext_node(int minors, int ext_minors, int node_id)
 {
 	struct gendisk *disk;
 
@@ -1054,7 +1045,6 @@ struct gendisk *alloc_disk_ext_node(int minors, int ext_minors, int node_id)
 		disk->part_tbl->part[0] = &disk->part0;
 
 		disk->minors = minors;
-		disk->ext_minors = ext_minors;
 		rand_initialize_disk(disk);
 		disk_to_dev(disk)->class = &block_class;
 		disk_to_dev(disk)->type = &disk_type;
@@ -1065,11 +1055,7 @@ struct gendisk *alloc_disk_ext_node(int minors, int ext_minors, int node_id)
 	}
 	return disk;
 }
-
-EXPORT_SYMBOL(alloc_disk);
 EXPORT_SYMBOL(alloc_disk_node);
-EXPORT_SYMBOL(alloc_disk_ext);
-EXPORT_SYMBOL(alloc_disk_ext_node);
 
 struct kobject *get_disk(struct gendisk *disk)
 {
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index a072df5053ae..29c8ae752683 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -41,16 +41,12 @@
 #include <asm/io.h>
 #include <asm/div64.h>
 
-#define IDE_DISK_PARTS		(1 << PARTN_BITS)
-
 #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
-#define IDE_DISK_MINORS		IDE_DISK_PARTS
+#define IDE_DISK_MINORS		(1 << PARTN_BITS)
 #else
 #define IDE_DISK_MINORS		1
 #endif
 
-#define IDE_DISK_EXT_MINORS	(IDE_DISK_PARTS - IDE_DISK_MINORS)
-
 struct ide_disk_obj {
 	ide_drive_t	*drive;
 	ide_driver_t	*driver;
@@ -1161,8 +1157,7 @@ static int ide_disk_probe(ide_drive_t *drive)
 	if (!idkp)
 		goto failed;
 
-	g = alloc_disk_ext_node(IDE_DISK_MINORS, IDE_DISK_EXT_MINORS,
-				hwif_to_node(drive->hwif));
+	g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif));
 	if (!g)
 		goto out_free_idkp;
 
@@ -1189,9 +1184,10 @@ static int ide_disk_probe(ide_drive_t *drive)
 		drive->attach = 1;
 
 	g->minors = IDE_DISK_MINORS;
-	g->ext_minors = IDE_DISK_EXT_MINORS;
 	g->driverfs_dev = &drive->gendev;
-	g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
+	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);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 280d231a86ed..6598024531dd 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -86,16 +86,12 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_DISK);
 MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD);
 MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
 
-#define SD_PARTS	64
-
 #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define SD_MINORS	16
 #else
 #define SD_MINORS	1
 #endif
 
-#define SD_EXT_MINORS	(SD_PARTS - SD_MINORS)
-
 static int  sd_revalidate_disk(struct gendisk *);
 static int  sd_probe(struct device *);
 static int  sd_remove(struct device *);
@@ -1811,7 +1807,7 @@ static int sd_probe(struct device *dev)
 	if (!sdkp)
 		goto out;
 
-	gd = alloc_disk_ext(SD_MINORS, SD_EXT_MINORS);
+	gd = alloc_disk(SD_MINORS);
 	if (!gd)
 		goto out_free;
 
@@ -1856,7 +1852,6 @@ static int sd_probe(struct device *dev)
 	gd->major = sd_major((index & 0xf0) >> 4);
 	gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
 	gd->minors = SD_MINORS;
-	gd->ext_minors = SD_EXT_MINORS;
 	gd->fops = &sd_fops;
 
 	if (index < 26) {
@@ -1880,7 +1875,7 @@ static int sd_probe(struct device *dev)
 	blk_queue_prep_rq(sdp->request_queue, sd_prep_fn);
 
 	gd->driverfs_dev = &sdp->sdev_gendev;
-	gd->flags = GENHD_FL_DRIVERFS;
+	gd->flags = GENHD_FL_EXT_DEVT | GENHD_FL_DRIVERFS;
 	if (sdp->removable)
 		gd->flags |= GENHD_FL_REMOVABLE;
 
diff --git a/fs/partitions/check.h b/fs/partitions/check.h
index 17ae8ecd9e8b..98dbe1a84528 100644
--- a/fs/partitions/check.h
+++ b/fs/partitions/check.h
@@ -5,15 +5,13 @@
  * add_gd_partition adds a partitions details to the devices partition
  * description.
  */
-enum { MAX_PART = 256 };
-
 struct parsed_partitions {
 	char name[BDEVNAME_SIZE];
 	struct {
 		sector_t from;
 		sector_t size;
 		int flags;
-	} parts[MAX_PART];
+	} parts[DISK_MAX_PARTS];
 	int next;
 	int limit;
 };
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ecf649c3deed..04524c213de1 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -58,6 +58,8 @@ enum {
 	UNIXWARE_PARTITION = 0x63,	/* Same as GNU_HURD and SCO Unix */
 };
 
+#define DISK_MAX_PARTS			256
+
 #include <linux/major.h>
 #include <linux/device.h>
 #include <linux/smp.h>
@@ -112,6 +114,7 @@ struct hd_struct {
 #define GENHD_FL_CD				8
 #define GENHD_FL_UP				16
 #define GENHD_FL_SUPPRESS_PARTITION_INFO	32
+#define GENHD_FL_EXT_DEVT			64 /* allow extended devt */
 
 #define BLK_SCSI_MAX_CMDS	(256)
 #define BLK_SCSI_CMD_PER_LONG	(BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))
@@ -129,15 +132,13 @@ struct disk_part_tbl {
 };
 
 struct gendisk {
-	/* major, first_minor, minors and ext_minors are input
-	 * parameters only, don't use directly.  Use disk_devt() and
-	 * disk_max_parts().
+	/* major, first_minor and minors are input parameters only,
+	 * don't use directly.  Use disk_devt() and disk_max_parts().
 	 */
 	int major;			/* major number of driver */
 	int first_minor;
 	int minors;                     /* maximum number of minors, =1 for
                                          * disks that can't be partitioned. */
-	int ext_minors;			/* number of extended dynamic minors */
 
 	char disk_name[32];		/* name of major driver */
 
@@ -180,7 +181,9 @@ static inline struct gendisk *part_to_disk(struct hd_struct *part)
 
 static inline int disk_max_parts(struct gendisk *disk)
 {
-	return disk->minors + disk->ext_minors;
+	if (disk->flags & GENHD_FL_EXT_DEVT)
+		return DISK_MAX_PARTS;
+	return disk->minors;
 }
 
 static inline bool disk_partitionable(struct gendisk *disk)
@@ -527,9 +530,6 @@ extern void printk_all_partitions(void);
 
 extern struct gendisk *alloc_disk_node(int minors, int node_id);
 extern struct gendisk *alloc_disk(int minors);
-extern struct gendisk *alloc_disk_ext_node(int minors, int ext_minrs,
-					   int node_id);
-extern struct gendisk *alloc_disk_ext(int minors, int ext_minors);
 extern struct kobject *get_disk(struct gendisk *disk);
 extern void put_disk(struct gendisk *disk);
 extern void blk_register_region(dev_t devt, unsigned long range,
-- 
cgit v1.2.3


From 3e1a7ff8a0a7b948f2684930166954f9e8e776fe Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 25 Aug 2008 19:56:17 +0900
Subject: block: allow disk to have extended device number

Now that disk and partition handlings are mostly unified, it's easy to
allow disk to have extended device number.  This patch makes
add_disk() use extended device number if disk->minors is zero.  Both
sd and ide-disk are updated to use this.

* sd_format_disk_name() is implemented which can generically determine
  the drive name.  This removes disk number restriction stemming from
  limited device names.

* If sd index goes over SD_MAX_DISKS (which can be increased now BTW),
  sd simply doesn't initialize minors letting block layer choose
  extended device number.

* If CONFIG_DEBUG_EXT_DEVT is set, both sd and ide-disk always set
  minors to 0 and use extended device numbers.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 block/genhd.c          | 25 ++++++++++++++++-
 drivers/ide/ide-disk.c |  2 +-
 drivers/scsi/sd.c      | 74 ++++++++++++++++++++++++++++++++++++--------------
 fs/partitions/check.c  |  1 +
 include/linux/genhd.h  |  3 +-
 5 files changed, 82 insertions(+), 23 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/block/genhd.c b/block/genhd.c
index eedab5b4685b..d9de3e482d1e 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -478,14 +478,37 @@ static int exact_lock(dev_t devt, void *data)
  *
  * This function registers the partitioning information in @disk
  * with the kernel.
+ *
+ * FIXME: error handling
  */
 void add_disk(struct gendisk *disk)
 {
 	struct backing_dev_info *bdi;
+	dev_t devt;
 	int retval;
 
+	/* minors == 0 indicates to use ext devt from part0 and should
+	 * be accompanied with EXT_DEVT flag.  Make sure all
+	 * parameters make sense.
+	 */
+	WARN_ON(disk->minors && !(disk->major || disk->first_minor));
+	WARN_ON(!disk->minors && !(disk->flags & GENHD_FL_EXT_DEVT));
+
 	disk->flags |= GENHD_FL_UP;
-	disk_to_dev(disk)->devt = MKDEV(disk->major, disk->first_minor);
+
+	retval = blk_alloc_devt(&disk->part0, &devt);
+	if (retval) {
+		WARN_ON(1);
+		return;
+	}
+	disk_to_dev(disk)->devt = devt;
+
+	/* ->major and ->first_minor aren't supposed to be
+	 * dereferenced from here on, but set them just in case.
+	 */
+	disk->major = MAJOR(devt);
+	disk->first_minor = MINOR(devt);
+
 	blk_register_region(disk_devt(disk), disk->minors, NULL,
 			    exact_match, exact_lock, disk);
 	register_disk(disk);
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 29c8ae752683..33ea8c048717 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -44,7 +44,7 @@
 #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define IDE_DISK_MINORS		(1 << PARTN_BITS)
 #else
-#define IDE_DISK_MINORS		1
+#define IDE_DISK_MINORS		0
 #endif
 
 struct ide_disk_obj {
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6598024531dd..bcb04b2a7676 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -89,7 +89,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
 #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define SD_MINORS	16
 #else
-#define SD_MINORS	1
+#define SD_MINORS	0
 #endif
 
 static int  sd_revalidate_disk(struct gendisk *);
@@ -1769,6 +1769,52 @@ static int sd_revalidate_disk(struct gendisk *disk)
 	return 0;
 }
 
+/**
+ *	sd_format_disk_name - format disk name
+ *	@prefix: name prefix - ie. "sd" for SCSI disks
+ *	@index: index of the disk to format name for
+ *	@buf: output buffer
+ *	@buflen: length of the output buffer
+ *
+ *	SCSI disk names starts at sda.  The 26th device is sdz and the
+ *	27th is sdaa.  The last one for two lettered suffix is sdzz
+ *	which is followed by sdaaa.
+ *
+ *	This is basically 26 base counting with one extra 'nil' entry
+ *	at the beggining from the second digit on and can be
+ *	determined using similar method as 26 base conversion with the
+ *	index shifted -1 after each digit is computed.
+ *
+ *	CONTEXT:
+ *	Don't care.
+ *
+ *	RETURNS:
+ *	0 on success, -errno on failure.
+ */
+static int sd_format_disk_name(char *prefix, int index, char *buf, int buflen)
+{
+	const int base = 'z' - 'a' + 1;
+	char *begin = buf + strlen(prefix);
+	char *end = buf + buflen;
+	char *p;
+	int unit;
+
+	p = end - 1;
+	*p = '\0';
+	unit = base;
+	do {
+		if (p == begin)
+			return -EINVAL;
+		*--p = 'a' + (index % unit);
+		index = (index / unit) - 1;
+	} while (index >= 0);
+
+	memmove(begin, p, end - p);
+	memcpy(buf, prefix, strlen(prefix));
+
+	return 0;
+}
+
 /**
  *	sd_probe - called during driver initialization and whenever a
  *	new scsi device is attached to the system. It is called once
@@ -1821,8 +1867,8 @@ static int sd_probe(struct device *dev)
 	if (error)
 		goto out_put;
 
-	error = -EBUSY;
-	if (index >= SD_MAX_DISKS)
+	error = sd_format_disk_name("sd", index, gd->disk_name, DISK_NAME_LEN);
+	if (error)
 		goto out_free_index;
 
 	sdkp->device = sdp;
@@ -1849,24 +1895,12 @@ static int sd_probe(struct device *dev)
 
 	get_device(&sdp->sdev_gendev);
 
-	gd->major = sd_major((index & 0xf0) >> 4);
-	gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
-	gd->minors = SD_MINORS;
-	gd->fops = &sd_fops;
-
-	if (index < 26) {
-		sprintf(gd->disk_name, "sd%c", 'a' + index % 26);
-	} else if (index < (26 + 1) * 26) {
-		sprintf(gd->disk_name, "sd%c%c",
-			'a' + index / 26 - 1,'a' + index % 26);
-	} else {
-		const unsigned int m1 = (index / 26 - 1) / 26 - 1;
-		const unsigned int m2 = (index / 26 - 1) % 26;
-		const unsigned int m3 =  index % 26;
-		sprintf(gd->disk_name, "sd%c%c%c",
-			'a' + m1, 'a' + m2, 'a' + m3);
+	if (index < SD_MAX_DISKS) {
+		gd->major = sd_major((index & 0xf0) >> 4);
+		gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
+		gd->minors = SD_MINORS;
 	}
-
+	gd->fops = &sd_fops;
 	gd->private_data = &sdkp->driver;
 	gd->queue = sdkp->device->request_queue;
 
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 772b2ed8d239..0e411603fdf5 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -593,6 +593,7 @@ void del_gendisk(struct gendisk *disk)
 	disk_part_iter_exit(&piter);
 
 	invalidate_partition(disk, 0);
+	blk_free_devt(disk_to_dev(disk)->devt);
 	set_capacity(disk, 0);
 	disk->flags &= ~GENHD_FL_UP;
 	unlink_gendisk(disk);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 04524c213de1..206cdf96c3a7 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -59,6 +59,7 @@ enum {
 };
 
 #define DISK_MAX_PARTS			256
+#define DISK_NAME_LEN			32
 
 #include <linux/major.h>
 #include <linux/device.h>
@@ -140,7 +141,7 @@ struct gendisk {
 	int minors;                     /* maximum number of minors, =1 for
                                          * disks that can't be partitioned. */
 
-	char disk_name[32];		/* name of major driver */
+	char disk_name[DISK_NAME_LEN];	/* name of major driver */
 
 	/* Array of pointers to partitions indexed by partno.
 	 * Protected with matching bdev lock but stat and other
-- 
cgit v1.2.3


From 4dde4492d850a4c9bcaa92e5bd7f4eebe3e2f5ab Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:19 +0200
Subject: ide: make drive->id an union (take 2)

Make drive->id an unnamed union so id can be accessed either by using
'u16 *id' or 'struct hd_driveid *driveid'.  Then convert all existing
drive->id users accordingly (using 'u16 *id' when possible).

This is an intermediate step to make ide 'struct hd_driveid'-free.

While at it:

- Add missing KERN_CONTs in it821x.c.

- Use ATA_ID_WORDS and ATA_ID_*_LEN defines.

- Remove unnecessary checks for drive->id.

- s/drive_table/table/ in ide_in_drive_list().

- Cleanup ide_config_drive_speed() a bit.

- s/drive1/dev1/ & s/drive0/dev0/ in ide_undecoded_slave().

v2:
Fix typo in drivers/ide/ppc/pmac.c. (From Stephen Rothwell)

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/icside.c       |   4 +-
 drivers/ide/arm/palm_bk3710.c  |   3 +-
 drivers/ide/ide-acpi.c         |   6 +--
 drivers/ide/ide-cd.c           |  15 +++---
 drivers/ide/ide-disk.c         |  63 +++++++++++-----------
 drivers/ide/ide-dma.c          |  50 ++++++++++--------
 drivers/ide/ide-floppy.c       |  14 ++---
 drivers/ide/ide-iops.c         |  80 +++++++++++++---------------
 drivers/ide/ide-lib.c          |  24 +++++----
 drivers/ide/ide-probe.c        | 117 ++++++++++++++++++++++-------------------
 drivers/ide/ide-proc.c         |   5 +-
 drivers/ide/ide-tape.c         |   7 +--
 drivers/ide/ide-taskfile.c     |   6 ++-
 drivers/ide/ide-timings.c      |  21 ++++----
 drivers/ide/ide.c              |   8 +--
 drivers/ide/legacy/qd65xx.c    |  22 ++++----
 drivers/ide/pci/alim15x3.c     |   4 +-
 drivers/ide/pci/cs5530.c       |  10 ++--
 drivers/ide/pci/hpt366.c       |   8 +--
 drivers/ide/pci/it821x.c       |  51 +++++++++---------
 drivers/ide/pci/pdc202xx_new.c |   4 +-
 drivers/ide/pci/pdc202xx_old.c |   6 +--
 drivers/ide/pci/sc1200.c       |  10 ++--
 drivers/ide/pci/serverworks.c  |   4 +-
 drivers/ide/pci/siimage.c      |   8 +--
 drivers/ide/ppc/pmac.c         |   6 +--
 drivers/scsi/ide-scsi.c        |  13 ++---
 include/linux/ide.h            |  23 ++++----
 28 files changed, 312 insertions(+), 280 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index df4af4083954..ca9e8ea32ee2 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -265,8 +265,8 @@ static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
 	 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
 	 * take care to note the values in the ID...
 	 */
-	if (use_dma_info && drive->id->eide_dma_time > cycle_time)
-		cycle_time = drive->id->eide_dma_time;
+	if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
+		cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
 
 	drive->drive_data = cycle_time;
 
diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index 4fd91dcf1dc2..6cea984776fd 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -213,7 +213,8 @@ static void palm_bk3710_set_dma_mode(ide_drive_t *drive, u8 xferspeed)
 		palm_bk3710_setudmamode(base, is_slave,
 					xferspeed - XFER_UDMA_0);
 	} else {
-		palm_bk3710_setdmamode(base, is_slave, drive->id->eide_dma_min,
+		palm_bk3710_setdmamode(base, is_slave,
+				       drive->id[ATA_ID_EIDE_DMA_MIN],
 				       xferspeed);
 	}
 }
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index 6f704628c27d..2427c380b3dc 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -584,7 +584,7 @@ void ide_acpi_get_timing(ide_hwif_t *hwif)
  * This function executes the _STM ACPI method for the target channel.
  *
  * _STM requires Identify Drive data, which has to passed as an argument.
- * Unfortunately hd_driveid is a mangled version which we can't readily
+ * Unfortunately drive->id is a mangled version which we can't readily
  * use; hence we'll get the information afresh.
  */
 void ide_acpi_push_timing(ide_hwif_t *hwif)
@@ -614,10 +614,10 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
 	in_params[0].buffer.length = sizeof(struct GTM_buffer);
 	in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
 	in_params[1].type = ACPI_TYPE_BUFFER;
-	in_params[1].buffer.length = sizeof(struct hd_driveid);
+	in_params[1].buffer.length = sizeof(ATA_ID_WORDS * 2);
 	in_params[1].buffer.pointer = (u8 *)&master->idbuff;
 	in_params[2].type = ACPI_TYPE_BUFFER;
-	in_params[2].buffer.length = sizeof(struct hd_driveid);
+	in_params[2].buffer.length = sizeof(ATA_ID_WORDS * 2);
 	in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
 	/* Output buffer: _STM has no output */
 
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 03c2cb6a58bc..46f9720f1ec9 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1866,14 +1866,14 @@ static const struct cd_list_entry ide_cd_quirks_list[] = {
 	{ NULL, NULL, 0 }
 };
 
-static unsigned int ide_cd_flags(struct hd_driveid *id)
+static unsigned int ide_cd_flags(u16 *id)
 {
 	const struct cd_list_entry *cle = ide_cd_quirks_list;
 
 	while (cle->id_model) {
-		if (strcmp(cle->id_model, id->model) == 0 &&
+		if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
 		    (cle->id_firmware == NULL ||
-		     strstr(id->fw_rev, cle->id_firmware)))
+		     strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
 			return cle->cd_flags;
 		cle++;
 	}
@@ -1885,7 +1885,8 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 {
 	struct cdrom_info *cd = drive->driver_data;
 	struct cdrom_device_info *cdi = &cd->devinfo;
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
+	char *fw_rev = (char *)&id[ATA_ID_FW_REV];
 	int nslots;
 
 	blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
@@ -1900,15 +1901,15 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 	drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
 		       ide_cd_flags(id);
 
-	if ((id->config & 0x0060) == 0x20)
+	if ((id[ATA_ID_CONFIG] & 0x0060) == 0x20)
 		drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
 
 	if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
-	    id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
+	    fw_rev[4] == '1' && fw_rev[6] <= '2')
 		drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
 				     IDE_AFLAG_TOCADDR_AS_BCD);
 	else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
-		 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
+		 fw_rev[4] == '1' && fw_rev[6] <= '2')
 		drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
 	else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
 		/* 3 => use CD in slot 0 */
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 33ea8c048717..f1669bca3cab 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -99,12 +99,13 @@ static void ide_disk_put(struct ide_disk_obj *idkp)
  *
  * It is called only once for each drive.
  */
-static int lba_capacity_is_ok(struct hd_driveid *id)
+static int lba_capacity_is_ok(u16 *id)
 {
+	struct hd_driveid *driveid = (struct hd_driveid *)id;
 	unsigned long lba_sects, chs_sects, head, tail;
 
 	/* No non-LBA info .. so valid! */
-	if (id->cyls == 0)
+	if (id[ATA_ID_CYLS] == 0)
 		return 1;
 
 	/*
@@ -113,15 +114,15 @@ static int lba_capacity_is_ok(struct hd_driveid *id)
 	 * 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))
+	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) &&
+	    (driveid->lba_capacity >= 16383 * 63 * id[ATA_ID_HEADS]))
 		return 1;
 
-	lba_sects   = id->lba_capacity;
-	chs_sects   = id->cyls * id->heads * id->sectors;
+	lba_sects = driveid->lba_capacity;
+	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)
@@ -132,7 +133,7 @@ static int lba_capacity_is_ok(struct hd_driveid *id)
 	tail = (lba_sects & 0xffff);
 	lba_sects = (head | (tail << 16));
 	if ((lba_sects - chs_sects) < chs_sects/10) {
-		id->lba_capacity = lba_sects;
+		driveid->lba_capacity = lba_sects;
 		return 1;	/* lba_capacity is (now) good */
 	}
 
@@ -389,18 +390,20 @@ static unsigned long long sectors_to_MB(unsigned long long n)
  * 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)
+static inline int idedisk_supports_hpa(const u16 *id)
 {
-	return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400);
+	return (id[ATA_ID_COMMAND_SET_1] & 0x0400) &&
+	       (id[ATA_ID_CFS_ENABLE_1] & 0x0400);
 }
 
 /*
  * The same here.
  */
-static inline int idedisk_supports_lba48(const struct hd_driveid *id)
+static inline int idedisk_supports_lba48(const u16 *id)
 {
-	return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400)
-	       && id->lba_capacity_2;
+	return (id[ATA_ID_COMMAND_SET_2] & 0x0400) &&
+	       (id[ATA_ID_CFS_ENABLE_2] & 0x0400) &&
+	       ((struct hd_driveid *)id)->lba_capacity_2;
 }
 
 /*
@@ -453,7 +456,8 @@ static void idedisk_check_hpa(ide_drive_t *drive)
 
 static void init_idedisk_capacity(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	struct hd_driveid *driveid = drive->driveid;
+	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.
@@ -463,13 +467,13 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 	if (idedisk_supports_lba48(id)) {
 		/* drive speaks 48-bit LBA */
 		drive->select.b.lba = 1;
-		drive->capacity64 = id->lba_capacity_2;
+		drive->capacity64 = driveid->lba_capacity_2;
 		if (hpa)
 			idedisk_check_hpa(drive);
-	} else if ((id->capability & 2) && lba_capacity_is_ok(id)) {
+	} else if ((driveid->capability & 2) && lba_capacity_is_ok(id)) {
 		/* drive speaks 28-bit LBA */
 		drive->select.b.lba = 1;
-		drive->capacity64 = id->lba_capacity;
+		drive->capacity64 = driveid->lba_capacity;
 		if (hpa)
 			idedisk_check_hpa(drive);
 	} else {
@@ -523,7 +527,7 @@ static int proc_idedisk_read_cache
 	int		len;
 
 	if (drive->id_read)
-		len = sprintf(out, "%i\n", drive->id->buf_size / 2);
+		len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
 	else
 		len = sprintf(out, "(none)\n");
 
@@ -618,7 +622,7 @@ 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->driveid->max_multsect)
 		return -EINVAL;
 
 	if (drive->special.b.set_multmode)
@@ -650,7 +654,7 @@ static int set_nowerr(ide_drive_t *drive, int arg)
 
 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;
 
@@ -762,8 +766,6 @@ static int set_lba_addressing(ide_drive_t *drive, int arg)
 #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,
@@ -773,7 +775,7 @@ static void idedisk_add_settings(ide_drive_t *drive)
 	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,
+			drive->driveid->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);
@@ -795,7 +797,8 @@ static inline void idedisk_add_settings(ide_drive_t *drive) { ; }
 static void idedisk_setup(ide_drive_t *drive)
 {
 	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);
@@ -807,7 +810,7 @@ static void idedisk_setup(ide_drive_t *drive)
 		/*
 		 * Removable disks (eg. SYQUEST); ignore 'WD' drives
 		 */
-		if (id->model[0] != 'W' || id->model[1] != 'D')
+		if (m[0] != 'W' || m[1] != 'D')
 			drive->doorlocking = 1;
 	}
 
@@ -880,14 +883,14 @@ 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)))
+	if ((id[ATA_ID_CSFO] & 1) || (id[ATA_ID_CFS_ENABLE_1] & (1 << 5)))
 		drive->wcache = 1;
 
 	write_cache(drive, 1);
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 3fa07c0aeaa4..abab26de7687 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -288,7 +288,7 @@ EXPORT_SYMBOL_GPL(ide_destroy_dmatable);
 static int config_drive_for_dma (ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 
 	if (drive->media != ide_disk) {
 		if (hwif->host_flags & IDE_HFLAG_NO_ATAPI_DMA)
@@ -299,16 +299,17 @@ static int config_drive_for_dma (ide_drive_t *drive)
 	 * Enable DMA on any drive that has
 	 * UltraDMA (mode 0/1/2/3/4/5/6) enabled
 	 */
-	if ((id->field_valid & 4) && ((id->dma_ultra >> 8) & 0x7f))
+	if ((id[ATA_ID_FIELD_VALID] & 4) &&
+	    ((id[ATA_ID_UDMA_MODES] >> 8) & 0x7f))
 		return 1;
 
 	/*
 	 * Enable DMA on any drive that has mode2 DMA
 	 * (multi or single) enabled
 	 */
-	if (id->field_valid & 2)	/* regular DMA */
-		if ((id->dma_mword & 0x404) == 0x404 ||
-		    (id->dma_1word & 0x404) == 0x404)
+	if (id[ATA_ID_FIELD_VALID] & 2)	/* regular DMA */
+		if ((id[ATA_ID_MWDMA_MODES] & 0x404) == 0x404 ||
+		    (id[ATA_ID_SWDMA_MODES] & 0x404) == 0x404)
 			return 1;
 
 	/* Consult the list of known "good" drives */
@@ -591,12 +592,12 @@ static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
 
 int __ide_dma_bad_drive (ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 
 	int blacklist = ide_in_drive_list(id, drive_blacklist);
 	if (blacklist) {
 		printk(KERN_WARNING "%s: Disabling (U)DMA for %s (blacklisted)\n",
-				    drive->name, id->model);
+				    drive->name, (char *)&id[ATA_ID_PROD]);
 		return blacklist;
 	}
 	return 0;
@@ -612,21 +613,21 @@ static const u8 xfer_mode_bases[] = {
 
 static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_port_ops *port_ops = hwif->port_ops;
 	unsigned int mask = 0;
 
 	switch(base) {
 	case XFER_UDMA_0:
-		if ((id->field_valid & 4) == 0)
+		if ((id[ATA_ID_FIELD_VALID] & 4) == 0)
 			break;
 
 		if (port_ops && port_ops->udma_filter)
 			mask = port_ops->udma_filter(drive);
 		else
 			mask = hwif->ultra_mask;
-		mask &= id->dma_ultra;
+		mask &= id[ATA_ID_UDMA_MODES];
 
 		/*
 		 * avoid false cable warning from eighty_ninty_three()
@@ -637,19 +638,19 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
 		}
 		break;
 	case XFER_MW_DMA_0:
-		if ((id->field_valid & 2) == 0)
+		if ((id[ATA_ID_FIELD_VALID] & 2) == 0)
 			break;
 		if (port_ops && port_ops->mdma_filter)
 			mask = port_ops->mdma_filter(drive);
 		else
 			mask = hwif->mwdma_mask;
-		mask &= id->dma_mword;
+		mask &= id[ATA_ID_MWDMA_MODES];
 		break;
 	case XFER_SW_DMA_0:
-		if (id->field_valid & 2) {
-			mask = id->dma_1word & hwif->swdma_mask;
-		} else if (id->tDMA) {
-			u8 mode = id->tDMA;
+		if (id[ATA_ID_FIELD_VALID] & 2) {
+			mask = id[ATA_ID_SWDMA_MODES] & hwif->swdma_mask;
+		} else if (drive->driveid->tDMA) {
+			u8 mode = drive->driveid->tDMA;
 
 			/*
 			 * if the mode is valid convert it to the mask
@@ -706,7 +707,8 @@ u8 ide_find_dma_mode(ide_drive_t *drive, u8 req_mode)
 		/*
 		 * is this correct?
 		 */
-		if (ide_dma_good_drive(drive) && drive->id->eide_dma_time < 150)
+		if (ide_dma_good_drive(drive) &&
+		    drive->id[ATA_ID_EIDE_DMA_TIME] < 150)
 			mode = XFER_MW_DMA_1;
 	}
 
@@ -725,7 +727,7 @@ static int ide_tune_dma(ide_drive_t *drive)
 	ide_hwif_t *hwif = drive->hwif;
 	u8 speed;
 
-	if (drive->nodma || (drive->id->capability & 1) == 0)
+	if (drive->nodma || (drive->driveid->capability & 1) == 0)
 		return 0;
 
 	/* consult the list of known "bad" drives */
@@ -767,13 +769,15 @@ static int ide_dma_check(ide_drive_t *drive)
 
 int ide_id_dma_bug(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 
-	if (id->field_valid & 4) {
-		if ((id->dma_ultra >> 8) && (id->dma_mword >> 8))
+	if (id[ATA_ID_FIELD_VALID] & 4) {
+		if ((id[ATA_ID_UDMA_MODES] >> 8) &&
+		    (id[ATA_ID_MWDMA_MODES] >> 8))
 			goto err_out;
-	} else if (id->field_valid & 2) {
-		if ((id->dma_mword >> 8) && (id->dma_1word >> 8))
+	} else if (id[ATA_ID_FIELD_VALID] & 2) {
+		if ((id[ATA_ID_MWDMA_MODES] >> 8) &&
+		    (id[ATA_ID_SWDMA_MODES] >> 8))
 			goto err_out;
 	}
 	return 0;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index e9034c0125f3..67f93a46f510 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -965,12 +965,12 @@ static sector_t idefloppy_capacity(ide_drive_t *drive)
  * Check whether we can support a drive, based on the ATAPI IDENTIFY command
  * results.
  */
-static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
+static int idefloppy_identify_device(ide_drive_t *drive, u16 *id)
 {
 	u8 gcw[2];
 	u8 device_type, protocol, removable, drq_type, packet_size;
 
-	*((u16 *) &gcw) = id->config;
+	*((u16 *)&gcw) = id[ATA_ID_CONFIG];
 
 	device_type =  gcw[1] & 0x1F;
 	removable   = (gcw[0] & 0x80) >> 7;
@@ -981,7 +981,8 @@ static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
 #ifdef CONFIG_PPC
 	/* kludge for Apple PowerBook internal zip */
 	if (device_type == 5 &&
-	    !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
+	    !strstr((char *)&id[ATA_ID_PROD], "CD-ROM") &&
+	    strstr((char *)&id[ATA_ID_PROD], "ZIP"))
 		device_type = 0;
 #endif
 
@@ -1024,9 +1025,10 @@ static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
 
 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 {
+	u16 *id = drive->id;
 	u8 gcw[2];
 
-	*((u16 *) &gcw) = drive->id->config;
+	*((u16 *)&gcw) = id[ATA_ID_CONFIG];
 	floppy->pc = floppy->pc_stack;
 	drive->pc_callback = ide_floppy_callback;
 
@@ -1041,7 +1043,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	 * it. It should be fixed as of version 1.9, but to be on the safe side
 	 * we'll leave the limitation below for the 2.2.x tree.
 	 */
-	if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
+	if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
 		drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
 		/* This value will be visible in the /proc/ide/hdx/settings */
 		floppy->ticks = IDEFLOPPY_TICKS_DELAY;
@@ -1052,7 +1054,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
 	 * nasty clicking noises without it, so please don't remove this.
 	 */
-	if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
+	if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
 		blk_queue_max_sectors(drive->queue, 64);
 		drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
 	}
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 68d655e0fa47..01b1943b315e 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -400,11 +400,11 @@ const struct ide_tp_ops default_tp_ops = {
 	.output_data		= ide_output_data,
 };
 
-void ide_fix_driveid(struct hd_driveid *driveid)
+void ide_fix_driveid(u16 *id)
 {
 #ifndef __LITTLE_ENDIAN
 # ifdef __BIG_ENDIAN
-	u16 *id = (u16 *)driveid;
+	struct hd_driveid *driveid = (struct hd_driveid *)id;
 	int i;
 
 	for (i = 0; i < 256; i++) {
@@ -593,18 +593,18 @@ EXPORT_SYMBOL(ide_wait_stat);
 /**
  *	ide_in_drive_list	-	look for drive in black/white list
  *	@id: drive identifier
- *	@drive_table: list to inspect
+ *	@table: list to inspect
  *
  *	Look for a drive in the blacklist and the whitelist tables
  *	Returns 1 if the drive is found in the table.
  */
 
-int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *drive_table)
+int ide_in_drive_list(u16 *id, const struct drive_list_entry *table)
 {
-	for ( ; drive_table->id_model; drive_table++)
-		if ((!strcmp(drive_table->id_model, id->model)) &&
-		    (!drive_table->id_firmware ||
-		     strstr(id->fw_rev, drive_table->id_firmware)))
+	for ( ; table->id_model; table++)
+		if ((!strcmp(table->id_model, (char *)&id[ATA_ID_PROD])) &&
+		    (!table->id_firmware ||
+		     strstr((char *)&id[ATA_ID_FW_REV], table->id_firmware)))
 			return 1;
 	return 0;
 }
@@ -635,7 +635,7 @@ static const struct drive_list_entry ivb_list[] = {
 u8 eighty_ninty_three (ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 	int ivb = ide_in_drive_list(id, ivb_list);
 
 	if (hwif->cbl == ATA_CBL_PATA40_SHORT)
@@ -657,7 +657,8 @@ u8 eighty_ninty_three (ide_drive_t *drive)
 	 * - force bit13 (80c cable present) check also for !ivb devices
 	 *   (unless the slave device is pre-ATA3)
 	 */
-	if ((id->hw_config & 0x4000) || (ivb && (id->hw_config & 0x2000)))
+	if ((id[ATA_ID_HW_CONFIG] & 0x4000) ||
+	    (ivb && (id[ATA_ID_HW_CONFIG] & 0x2000)))
 		return 1;
 
 no_80w:
@@ -678,7 +679,7 @@ int ide_driveid_update(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
-	struct hd_driveid *id;
+	u16 *id;
 	unsigned long timeout, flags;
 	u8 stat;
 
@@ -722,16 +723,16 @@ int ide_driveid_update(ide_drive_t *drive)
 	local_irq_enable();
 	local_irq_restore(flags);
 	ide_fix_driveid(id);
-	if (id) {
-		drive->id->dma_ultra = id->dma_ultra;
-		drive->id->dma_mword = id->dma_mword;
-		drive->id->dma_1word = id->dma_1word;
-		/* anything more ? */
-		kfree(id);
-
-		if (drive->using_dma && ide_id_dma_bug(drive))
-			ide_dma_off(drive);
-	}
+
+	drive->id[ATA_ID_UDMA_MODES]  = id[ATA_ID_UDMA_MODES];
+	drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES];
+	drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES];
+	/* anything more ? */
+
+	kfree(id);
+
+	if (drive->using_dma && ide_id_dma_bug(drive))
+		ide_dma_off(drive);
 
 	return 1;
 }
@@ -740,6 +741,7 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
+	u16 *id = drive->id, i;
 	int error = 0;
 	u8 stat;
 	ide_task_t task;
@@ -750,7 +752,7 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 #endif
 
 	/* Skip setting PIO flow-control modes on pre-EIDE drives */
-	if ((speed & 0xf8) == XFER_PIO_0 && !(drive->id->capability & 0x08))
+	if ((speed & 0xf8) == XFER_PIO_0 && !(drive->driveid->capability & 8))
 		goto skip;
 
 	/*
@@ -802,9 +804,9 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 		return error;
 	}
 
-	drive->id->dma_ultra &= ~0xFF00;
-	drive->id->dma_mword &= ~0x0F00;
-	drive->id->dma_1word &= ~0x0F00;
+	id[ATA_ID_UDMA_MODES]  &= ~0xFF00;
+	id[ATA_ID_MWDMA_MODES] &= ~0x0F00;
+	id[ATA_ID_SWDMA_MODES] &= ~0x0F00;
 
  skip:
 #ifdef CONFIG_BLK_DEV_IDEDMA
@@ -814,23 +816,17 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 		ide_dma_off_quietly(drive);
 #endif
 
-	switch(speed) {
-		case XFER_UDMA_7:   drive->id->dma_ultra |= 0x8080; break;
-		case XFER_UDMA_6:   drive->id->dma_ultra |= 0x4040; break;
-		case XFER_UDMA_5:   drive->id->dma_ultra |= 0x2020; break;
-		case XFER_UDMA_4:   drive->id->dma_ultra |= 0x1010; break;
-		case XFER_UDMA_3:   drive->id->dma_ultra |= 0x0808; break;
-		case XFER_UDMA_2:   drive->id->dma_ultra |= 0x0404; break;
-		case XFER_UDMA_1:   drive->id->dma_ultra |= 0x0202; break;
-		case XFER_UDMA_0:   drive->id->dma_ultra |= 0x0101; break;
-		case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
-		case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
-		case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
-		case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
-		case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
-		case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
-		default: break;
+	if (speed >= XFER_UDMA_0) {
+		i = 1 << (speed - XFER_UDMA_0);
+		id[ATA_ID_UDMA_MODES] |= (i << 8 | i);
+	} else if (speed >= XFER_MW_DMA_0) {
+		i = 1 << (speed - XFER_MW_DMA_0);
+		id[ATA_ID_MWDMA_MODES] |= (i << 8 | i);
+	} else if (speed >= XFER_SW_DMA_0) {
+		i = 1 << (speed - XFER_SW_DMA_0);
+		id[ATA_ID_SWDMA_MODES] |= (i << 8 | i);
 	}
+
 	if (!drive->init_speed)
 		drive->init_speed = speed;
 	drive->current_speed = speed;
@@ -1035,7 +1031,7 @@ out:
 
 static void ide_disk_pre_reset(ide_drive_t *drive)
 {
-	int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1;
+	int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;
 
 	drive->special.all = 0;
 	drive->special.b.set_geometry = legacy;
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 97fefabea8b8..3066d7e75c73 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -90,29 +90,31 @@ static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 
 u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
 {
-	int pio_mode;
-	struct hd_driveid* id = drive->id;
-	int overridden  = 0;
+	u16 *id = drive->id;
+	int pio_mode = -1, overridden = 0;
 
 	if (mode_wanted != 255)
 		return min_t(u8, mode_wanted, max_mode);
 
-	if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 &&
-	    (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
+	if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0)
+		pio_mode = ide_scan_pio_blacklist((char *)&id[ATA_ID_PROD]);
+
+	if (pio_mode != -1) {
 		printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
 	} else {
-		pio_mode = id->tPIO;
+		pio_mode = drive->driveid->tPIO;
 		if (pio_mode > 2) {	/* 2 is maximum allowed tPIO value */
 			pio_mode = 2;
 			overridden = 1;
 		}
-		if (id->field_valid & 2) {	  /* drive implements ATA2? */
-			if (id->capability & 8) { /* IORDY supported? */
-				if (id->eide_pio_modes & 7) {
+
+		if (id[ATA_ID_FIELD_VALID] & 2) {	      /* ATA2? */
+			if (drive->driveid->capability & 8) { /* IORDY sup? */
+				if (id[ATA_ID_PIO_MODES] & 7) {
 					overridden = 0;
-					if (id->eide_pio_modes & 4)
+					if (id[ATA_ID_PIO_MODES] & 4)
 						pio_mode = 5;
-					else if (id->eide_pio_modes & 2)
+					else if (id[ATA_ID_PIO_MODES] & 2)
 						pio_mode = 4;
 					else
 						pio_mode = 3;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index a776a6d73c54..b4f8ca106639 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -50,44 +50,44 @@
  
 static void generic_id(ide_drive_t *drive)
 {
-	drive->id->cyls = drive->cyl;
-	drive->id->heads = drive->head;
-	drive->id->sectors = drive->sect;
-	drive->id->cur_cyls = drive->cyl;
-	drive->id->cur_heads = drive->head;
-	drive->id->cur_sectors = drive->sect;
+	u16 *id = drive->id;
+
+	id[ATA_ID_CUR_CYLS]	= id[ATA_ID_CYLS]	= drive->cyl;
+	id[ATA_ID_CUR_HEADS]	= id[ATA_ID_HEADS]	= drive->head;
+	id[ATA_ID_CUR_SECTORS]	= id[ATA_ID_SECTORS]	= drive->sect;
 }
 
 static void ide_disk_init_chs(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 
 	/* Extract geometry if we did not already have one for the drive */
 	if (!drive->cyl || !drive->head || !drive->sect) {
-		drive->cyl  = drive->bios_cyl  = id->cyls;
-		drive->head = drive->bios_head = id->heads;
-		drive->sect = drive->bios_sect = id->sectors;
+		drive->cyl  = drive->bios_cyl  = id[ATA_ID_CYLS];
+		drive->head = drive->bios_head = id[ATA_ID_HEADS];
+		drive->sect = drive->bios_sect = id[ATA_ID_SECTORS];
 	}
 
 	/* Handle logical geometry translation by the drive */
-	if ((id->field_valid & 1) && id->cur_cyls &&
-	    id->cur_heads && (id->cur_heads <= 16) && id->cur_sectors) {
-		drive->cyl  = id->cur_cyls;
-		drive->head = id->cur_heads;
-		drive->sect = id->cur_sectors;
+	if ((id[ATA_ID_FIELD_VALID] & 1) && id[ATA_ID_CUR_CYLS] &&
+	    id[ATA_ID_CUR_HEADS] && id[ATA_ID_CUR_HEADS] <= 16 &&
+	    id[ATA_ID_CUR_SECTORS]) {
+		drive->cyl  = id[ATA_ID_CUR_CYLS];
+		drive->head = id[ATA_ID_CUR_HEADS];
+		drive->sect = id[ATA_ID_CUR_SECTORS];
 	}
 
 	/* Use physical geometry if what we have still makes no sense */
-	if (drive->head > 16 && id->heads && id->heads <= 16) {
-		drive->cyl  = id->cyls;
-		drive->head = id->heads;
-		drive->sect = id->sectors;
+	if (drive->head > 16 && id[ATA_ID_HEADS] && id[ATA_ID_HEADS] <= 16) {
+		drive->cyl  = id[ATA_ID_CYLS];
+		drive->head = id[ATA_ID_HEADS];
+		drive->sect = id[ATA_ID_SECTORS];
 	}
 }
 
 static void ide_disk_init_mult_count(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->id;
+	struct hd_driveid *id = drive->driveid;
 
 	if (id->max_multsect) {
 #ifdef CONFIG_IDEDISK_MULTI_MODE
@@ -118,10 +118,10 @@ static void ide_disk_init_mult_count(ide_drive_t *drive)
 static inline void do_identify (ide_drive_t *drive, u8 cmd)
 {
 	ide_hwif_t *hwif = HWIF(drive);
+	u16 *id = drive->id;
+	char *m = (char *)&id[ATA_ID_PROD];
 	int bswap = 1;
-	struct hd_driveid *id;
 
-	id = drive->id;
 	/* read 512 bytes of id info */
 	hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE);
 
@@ -138,23 +138,24 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 	 *  WIN_PIDENTIFY *usually* returns little-endian info.
 	 */
 	if (cmd == WIN_PIDENTIFY) {
-		if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */
-		 || (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */
-		 || (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */
+		if ((m[0] == 'N' && m[1] == 'E') ||  /* NEC */
+		    (m[0] == 'F' && m[1] == 'X') ||  /* Mitsumi */
+		    (m[0] == 'P' && m[1] == 'i'))    /* Pioneer */
 			/* Vertos drives may still be weird */
-			bswap ^= 1;	
+			bswap ^= 1;
 	}
-	ide_fixstring(id->model,     sizeof(id->model),     bswap);
-	ide_fixstring(id->fw_rev,    sizeof(id->fw_rev),    bswap);
-	ide_fixstring(id->serial_no, sizeof(id->serial_no), bswap);
+
+	ide_fixstring(m, ATA_ID_PROD_LEN, bswap);
+	ide_fixstring((char *)&id[ATA_ID_FW_REV], ATA_ID_FW_REV_LEN, bswap);
+	ide_fixstring((char *)&id[ATA_ID_SERNO], ATA_ID_SERNO_LEN, bswap);
 
 	/* we depend on this a lot! */
-	id->model[sizeof(id->model)-1] = '\0';
+	m[ATA_ID_PROD_LEN - 1] = '\0';
 
-	if (strstr(id->model, "E X A B Y T E N E S T"))
+	if (strstr(m, "E X A B Y T E N E S T"))
 		goto err_misc;
 
-	printk(KERN_INFO "%s: %s, ", drive->name, id->model);
+	printk(KERN_INFO "%s: %s, ", drive->name, m);
 
 	drive->present = 1;
 	drive->dead = 0;
@@ -163,15 +164,15 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 	 * Check for an ATAPI device
 	 */
 	if (cmd == WIN_PIDENTIFY) {
-		u8 type = (id->config >> 8) & 0x1f;
+		u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f;
 
 		printk(KERN_CONT "ATAPI ");
 		switch (type) {
 			case ide_floppy:
-				if (!strstr(id->model, "CD-ROM")) {
-					if (!strstr(id->model, "oppy") &&
-					    !strstr(id->model, "poyp") &&
-					    !strstr(id->model, "ZIP"))
+				if (!strstr(m, "CD-ROM")) {
+					if (!strstr(m, "oppy") &&
+					    !strstr(m, "poyp") &&
+					    !strstr(m, "ZIP"))
 						printk(KERN_CONT "cdrom or floppy?, assuming ");
 					if (drive->media != ide_cdrom) {
 						printk(KERN_CONT "FLOPPY");
@@ -185,8 +186,7 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 				drive->removable = 1;
 #ifdef CONFIG_PPC
 				/* kludge for Apple PowerBook internal zip */
-				if (!strstr(id->model, "CD-ROM") &&
-				    strstr(id->model, "ZIP")) {
+				if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) {
 					printk(KERN_CONT "FLOPPY");
 					type = ide_floppy;
 					break;
@@ -220,14 +220,13 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 	 * 0x848a = CompactFlash device
 	 * These are *not* removable in Linux definition of the term
 	 */
-
-	if ((id->config != 0x848a) && (id->config & (1<<7)))
+	if (id[ATA_ID_CONFIG] != 0x848a && (id[ATA_ID_CONFIG] & (1 << 7)))
 		drive->removable = 1;
 
 	drive->media = ide_disk;
 
 	printk(KERN_CONT "%s DISK drive\n",
-		(id->config == 0x848a) ? "CFA" : "ATA");
+		(id[ATA_ID_CONFIG] == 0x848a) ? "CFA" : "ATA");
 
 	return;
 
@@ -525,7 +524,8 @@ static void enable_nest (ide_drive_t *drive)
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	u8 stat;
 
-	printk(KERN_INFO "%s: enabling %s -- ", hwif->name, drive->id->model);
+	printk(KERN_INFO "%s: enabling %s -- ",
+		hwif->name, (char *)&drive->id[ATA_ID_PROD]);
 
 	SELECT_DRIVE(drive);
 	msleep(50);
@@ -566,6 +566,8 @@ static void enable_nest (ide_drive_t *drive)
  
 static inline u8 probe_for_drive (ide_drive_t *drive)
 {
+	char *m;
+
 	/*
 	 *	In order to keep things simple we have an id
 	 *	block for all drives at all times. If the device
@@ -582,8 +584,10 @@ static inline u8 probe_for_drive (ide_drive_t *drive)
 		printk(KERN_ERR "ide: out of memory for id data.\n");
 		return 0;
 	}
-	strcpy(drive->id->model, "UNKNOWN");
-	
+
+	m = (char *)&drive->id[ATA_ID_PROD];
+	strcpy(m, "UNKNOWN");
+
 	/* skip probing? */
 	if (!drive->noprobe)
 	{
@@ -595,7 +599,8 @@ static inline u8 probe_for_drive (ide_drive_t *drive)
 		if (!drive->present)
 			/* drive not found */
 			return 0;
-		if (strstr(drive->id->model, "E X A B Y T E N E S T"))
+
+		if (strstr(m, "E X A B Y T E N E S T"))
 			enable_nest(drive);
 	
 		/* identification failed? */
@@ -739,36 +744,38 @@ out:
 
 /**
  *	ide_undecoded_slave	-	look for bad CF adapters
- *	@drive1: drive
+ *	@dev1: slave device
  *
  *	Analyse the drives on the interface and attempt to decide if we
  *	have the same drive viewed twice. This occurs with crap CF adapters
  *	and PCMCIA sometimes.
  */
 
-void ide_undecoded_slave(ide_drive_t *drive1)
+void ide_undecoded_slave(ide_drive_t *dev1)
 {
-	ide_drive_t *drive0 = &drive1->hwif->drives[0];
+	ide_drive_t *dev0 = &dev1->hwif->drives[0];
 
-	if ((drive1->dn & 1) == 0 || drive0->present == 0)
+	if ((dev1->dn & 1) == 0 || dev0->present == 0)
 		return;
 
 	/* If the models don't match they are not the same product */
-	if (strcmp(drive0->id->model, drive1->id->model))
+	if (strcmp((char *)&dev0->id[ATA_ID_PROD],
+		   (char *)&dev1->id[ATA_ID_PROD]))
 		return;
 
 	/* Serial numbers do not match */
-	if (strncmp(drive0->id->serial_no, drive1->id->serial_no, 20))
+	if (strncmp((char *)&dev0->id[ATA_ID_SERNO],
+		    (char *)&dev1->id[ATA_ID_SERNO], ATA_ID_SERNO_LEN))
 		return;
 
 	/* No serial number, thankfully very rare for CF */
-	if (drive0->id->serial_no[0] == 0)
+	if (*(char *)&dev0->id[ATA_ID_SERNO] == 0)
 		return;
 
 	/* Appears to be an IDE flash adapter with decode bugs */
 	printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n");
 
-	drive1->present = 0;
+	dev1->present = 0;
 }
 
 EXPORT_SYMBOL_GPL(ide_undecoded_slave);
@@ -852,7 +859,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 		if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT)
 			drive->no_io_32bit = 1;
 		else
-			drive->no_io_32bit = drive->id->dword_io ? 1 : 0;
+			drive->no_io_32bit = drive->id[ATA_ID_DWORD_IO] ? 1 : 0;
 	}
 }
 
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index f66c9c3f6fc6..0bdbb9bf90ba 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -561,11 +561,10 @@ static int proc_ide_read_dmodel
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
 	ide_drive_t	*drive = (ide_drive_t *) data;
-	struct hd_driveid *id = drive->id;
+	char		*m = (char *)&drive->id[ATA_ID_PROD];
 	int		len;
 
-	len = sprintf(page, "%.40s\n",
-		(id && id->model[0]) ? (char *)id->model : "(none)");
+	len = sprintf(page, "%.40s\n", m[0] ? m : "(none)");
 	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
 }
 
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index a373cc4142b7..2c4c6674db61 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2311,7 +2311,7 @@ static int idetape_identify_device(ide_drive_t *drive)
 	if (drive->id_read == 0)
 		return 1;
 
-	*((unsigned short *) &gcw) = drive->id->config;
+	*((u16 *)&gcw) = drive->id[ATA_ID_CONFIG];
 
 	protocol	=   (gcw[1] & 0xC0) >> 6;
 	device_type	=    gcw[1] & 0x1F;
@@ -2463,7 +2463,7 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)
 		drive->dsc_overlap = 0;
 	}
 	/* Seagate Travan drives do not support DSC overlap. */
-	if (strstr(drive->id->model, "Seagate STT3401"))
+	if (strstr((char *)&drive->id[ATA_ID_PROD], "Seagate STT3401"))
 		drive->dsc_overlap = 0;
 	tape->minor = minor;
 	tape->name[0] = 'h';
@@ -2471,7 +2471,8 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)
 	tape->name[2] = '0' + minor;
 	tape->chrdev_dir = IDETAPE_DIR_NONE;
 	tape->pc = tape->pc_stack;
-	*((unsigned short *) &gcw) = drive->id->config;
+
+	*((u16 *)&gcw) = drive->id[ATA_ID_CONFIG];
 
 	/* Command packet DRQ type */
 	if (((gcw[0] & 0x60) >> 5) == 1)
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 7fb6f1c86272..f889373d7f95 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -729,7 +729,7 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 	u8 args[4], xfer_rate = 0;
 	ide_task_t tfargs;
 	struct ide_taskfile *tf = &tfargs.tf;
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 
 	if (NULL == (void *) arg) {
 		struct request *rq;
@@ -772,7 +772,9 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 	if (tf->command == WIN_SETFEATURES &&
 	    tf->feature == SETFEATURES_XFER &&
 	    tf->nsect >= XFER_SW_DMA_0 &&
-	    (id->dma_ultra || id->dma_mword || id->dma_1word)) {
+	    (id[ATA_ID_UDMA_MODES] ||
+	     id[ATA_ID_MWDMA_MODES] ||
+	     id[ATA_ID_SWDMA_MODES])) {
 		xfer_rate = args[1];
 		if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) {
 			printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c
index 8c2f8327f487..d64f345f2fc0 100644
--- a/drivers/ide/ide-timings.c
+++ b/drivers/ide/ide-timings.c
@@ -78,15 +78,15 @@ EXPORT_SYMBOL_GPL(ide_timing_find_mode);
 
 u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 	struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
 	u16 cycle = 0;
 
-	if (id->field_valid & 2) {
-		if (id->capability & 8)
-			cycle = id->eide_pio_iordy;
+	if (id[ATA_ID_FIELD_VALID] & 2) {
+		if (drive->driveid->capability & 8)
+			cycle = id[ATA_ID_EIDE_PIO_IORDY];
 		else
-			cycle = id->eide_pio;
+			cycle = id[ATA_ID_EIDE_PIO];
 
 		/* conservative "downgrade" for all pre-ATA2 drives */
 		if (pio < 3 && cycle < t->cycle)
@@ -138,7 +138,7 @@ EXPORT_SYMBOL_GPL(ide_timing_merge);
 int ide_timing_compute(ide_drive_t *drive, u8 speed,
 		       struct ide_timing *t, int T, int UT)
 {
-	struct hd_driveid *id = drive->id;
+	u16 *id = drive->id;
 	struct ide_timing *s, p;
 
 	/*
@@ -157,16 +157,15 @@ int ide_timing_compute(ide_drive_t *drive, u8 speed,
 	 * If the drive is an EIDE drive, it can tell us it needs extended
 	 * PIO/MWDMA cycle timing.
 	 */
-	if (id && id->field_valid & 2) {	/* EIDE drive */
-
+	if (id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE drive */
 		memset(&p, 0, sizeof(p));
 
 		if (speed <= XFER_PIO_2)
-			p.cycle = p.cyc8b = id->eide_pio;
+			p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO];
 		else if (speed <= XFER_PIO_5)
-			p.cycle = p.cyc8b = id->eide_pio_iordy;
+			p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY];
 		else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
-			p.cycle = id->eide_dma_min;
+			p.cycle = id[ATA_ID_EIDE_DMA_MIN];
 
 		ide_timing_merge(&p, t, t, IDE_TIMING_CYCLE | IDE_TIMING_CYC8B);
 	}
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 772451600e4d..8d3fab33a3c7 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -328,7 +328,7 @@ int set_using_dma(ide_drive_t *drive, int arg)
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (!drive->id || !(drive->id->capability & 1))
+	if ((drive->driveid->capability & 1) == 0)
 		goto out;
 
 	if (hwif->dma_ops == NULL)
@@ -710,21 +710,21 @@ static ssize_t model_show(struct device *dev, struct device_attribute *attr,
 			  char *buf)
 {
 	ide_drive_t *drive = to_ide_device(dev);
-	return sprintf(buf, "%s\n", drive->id->model);
+	return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]);
 }
 
 static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
 			     char *buf)
 {
 	ide_drive_t *drive = to_ide_device(dev);
-	return sprintf(buf, "%s\n", drive->id->fw_rev);
+	return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]);
 }
 
 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
 	ide_drive_t *drive = to_ide_device(dev);
-	return sprintf(buf, "%s\n", drive->id->serial_no);
+	return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]);
 }
 
 static struct device_attribute ide_dev_attrs[] = {
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 2338f344ea24..ef4e84053a81 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -151,12 +151,14 @@ static int qd_find_disk_type (ide_drive_t *drive,
 		int *active_time, int *recovery_time)
 {
 	struct qd65xx_timing_s *p;
-	char model[40];
+	char *m = (char *)&drive->id[ATA_ID_PROD];
+	char model[ATA_ID_PROD_LEN];
 
-	if (!*drive->id->model) return 0;
+	if (*m == 0)
+		return 0;
 
-	strncpy(model,drive->id->model,40);
-	ide_fixstring(model,40,1); /* byte-swap */
+	strncpy(model, m, ATA_ID_PROD_LEN);
+	ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */
 
 	for (p = qd65xx_timing ; p->offset != -1 ; p++) {
 		if (!strncmp(p->model, model+p->offset, 4)) {
@@ -185,20 +187,20 @@ static void qd_set_timing (ide_drive_t *drive, u8 timing)
 
 static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
+	u16 *id = drive->id;
 	int active_time   = 175;
 	int recovery_time = 415; /* worst case values from the dos driver */
 
 	/*
 	 * FIXME: use "pio" value
 	 */
-	if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)
-		&& drive->id->tPIO && (drive->id->field_valid & 0x02)
-		&& drive->id->eide_pio >= 240) {
-
+	if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
+	    drive->driveid->tPIO && (id[ATA_ID_FIELD_VALID] & 2) &&
+	    id[ATA_ID_EIDE_PIO] >= 240) {
 		printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
-				drive->id->tPIO);
+				drive->driveid->tPIO);
 		active_time = 110;
-		recovery_time = drive->id->eide_pio - 120;
+		recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
 	}
 
 	qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time));
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index d647526af557..fcc701b3c0a2 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -134,8 +134,8 @@ static u8 ali_udma_filter(ide_drive_t *drive)
 	if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
 		if (drive->media != ide_disk)
 			return 0;
-		if (chip_is_1543c_e && strstr(drive->id->model, "WDC ") &&
-		    wdc_udma == 0)
+		if (wdc_udma == 0 && chip_is_1543c_e &&
+		    strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
 			return 0;
 	}
 
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index f235db8c678b..774ff58603a2 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -82,16 +82,18 @@ static u8 cs5530_udma_filter(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	ide_drive_t *mate = &hwif->drives[(drive->dn & 1) ^ 1];
-	struct hd_driveid *mateid = mate->id;
+	u16 *mateid = mate->id;
 	u8 mask = hwif->ultra_mask;
 
 	if (mate->present == 0)
 		goto out;
 
-	if ((mateid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
-		if ((mateid->field_valid & 4) && (mateid->dma_ultra & 7))
+	if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
+		if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
+		    (mateid[ATA_ID_UDMA_MODES] & 7))
 			goto out;
-		if ((mateid->field_valid & 2) && (mateid->dma_mword & 7))
+		if ((mateid[ATA_ID_FIELD_VALID] & 2) &&
+		    (mateid[ATA_ID_MWDMA_MODES] & 7))
 			mask = 0;
 	}
 out:
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index c37ab1743819..b7f77fd3cb6e 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -605,10 +605,10 @@ static const struct hpt_info hpt371n __devinitdata = {
 
 static int check_in_drive_list(ide_drive_t *drive, const char **list)
 {
-	struct hd_driveid *id = drive->id;
+	char *m = (char *)&drive->id[ATA_ID_PROD];
 
 	while (*list)
-		if (!strcmp(*list++,id->model))
+		if (!strcmp(*list++, m))
 			return 1;
 	return 0;
 }
@@ -731,11 +731,11 @@ static void hpt3xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void hpt3xx_quirkproc(ide_drive_t *drive)
 {
-	struct hd_driveid *id	= drive->id;
+	char *m			= (char *)&drive->id[ATA_ID_PROD];
 	const  char **list	= quirk_drives;
 
 	while (*list)
-		if (strstr(id->model, *list++)) {
+		if (strstr(m, *list++)) {
 			drive->quirk_list = 1;
 			return;
 		}
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 4a1508a707cc..31d4e6aef1b8 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -446,8 +446,7 @@ static u8 it821x_cable_detect(ide_hwif_t *hwif)
 static void it821x_quirkproc(ide_drive_t *drive)
 {
 	struct it821x_dev *itdev = ide_get_hwifdata(drive->hwif);
-	struct hd_driveid *id = drive->id;
-	u16 *idbits = (u16 *)drive->id;
+	u16 *id = drive->id;
 
 	if (!itdev->smart) {
 		/*
@@ -466,36 +465,36 @@ static void it821x_quirkproc(ide_drive_t *drive)
 	 */
 
 		/* Check for RAID v native */
-		if(strstr(id->model, "Integrated Technology Express")) {
+		if (strstr((char *)&id[ATA_ID_PROD],
+			   "Integrated Technology Express")) {
 			/* In raid mode the ident block is slightly buggy
 			   We need to set the bits so that the IDE layer knows
 			   LBA28. LBA48 and DMA ar valid */
-			id->capability |= 3;		/* LBA28, DMA */
-			id->command_set_2 |= 0x0400;	/* LBA48 valid */
-			id->cfs_enable_2 |= 0x0400;	/* LBA48 on */
+			drive->driveid->capability |= 3;      /* LBA28, DMA */
+			id[ATA_ID_COMMAND_SET_2] |= 0x0400;   /* LBA48 valid */
+			id[ATA_ID_CFS_ENABLE_2]  |= 0x0400;   /* LBA48 on */
 			/* Reporting logic */
 			printk(KERN_INFO "%s: IT8212 %sRAID %d volume",
-				drive->name,
-				idbits[147] ? "Bootable ":"",
-				idbits[129]);
-				if(idbits[129] != 1)
-					printk("(%dK stripe)", idbits[146]);
-				printk(".\n");
+				drive->name, id[147] ? "Bootable " : "",
+				id[ATA_ID_CSFO]);
+			if (id[ATA_ID_CSFO] != 1)
+				printk(KERN_CONT "(%dK stripe)", id[146]);
+			printk(KERN_CONT ".\n");
 		} else {
 			/* Non RAID volume. Fixups to stop the core code
 			   doing unsupported things */
-			id->field_valid &= 3;
-			id->queue_depth = 0;
-			id->command_set_1 = 0;
-			id->command_set_2 &= 0xC400;
-			id->cfsse &= 0xC000;
-			id->cfs_enable_1 = 0;
-			id->cfs_enable_2 &= 0xC400;
-			id->csf_default &= 0xC000;
-			id->word127 = 0;
-			id->dlf = 0;
-			id->csfo = 0;
-			id->cfa_power = 0;
+			id[ATA_ID_FIELD_VALID]	 &= 3;
+			id[ATA_ID_QUEUE_DEPTH]	  = 0;
+			id[ATA_ID_COMMAND_SET_1]  = 0;
+			id[ATA_ID_COMMAND_SET_2] &= 0xC400;
+			id[ATA_ID_CFSSE]	 &= 0xC000;
+			id[ATA_ID_CFS_ENABLE_1]	  = 0;
+			id[ATA_ID_CFS_ENABLE_2]	 &= 0xC400;
+			id[ATA_ID_CSF_DEFAULT]	 &= 0xC000;
+			id[127]			  = 0;
+			id[ATA_ID_DLF]		  = 0;
+			id[ATA_ID_CSFO]		  = 0;
+			id[ATA_ID_CFA_POWER]	  = 0;
 			printk(KERN_INFO "%s: Performing identify fixups.\n",
 				drive->name);
 		}
@@ -505,8 +504,8 @@ static void it821x_quirkproc(ide_drive_t *drive)
 		 * IDE core that DMA is supported (it821x hardware
 		 * takes care of DMA mode programming).
 		 */
-		if (id->capability & 1) {
-			id->dma_mword |= 0x0101;
+		if (drive->driveid->capability & 1) {
+			id[ATA_ID_MWDMA_MODES] |= 0x0101;
 			drive->current_speed = XFER_MW_DMA_0;
 		}
 	}
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index d477da6b5858..7ecfcd06f47e 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -203,10 +203,10 @@ static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
 
 static void pdcnew_quirkproc(ide_drive_t *drive)
 {
-	const char **list, *model = drive->id->model;
+	const char **list, *m = (char *)&drive->id[ATA_ID_PROD];
 
 	for (list = pdc_quirk_drives; *list != NULL; list++)
-		if (strstr(model, *list) != NULL) {
+		if (strstr(m, *list) != NULL) {
 			drive->quirk_list = 2;
 			return;
 		}
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index de9a27400462..23e861b177ce 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -86,7 +86,7 @@ static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
 		 * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
 		 */
 		AP &= ~0x3f;
-		if (drive->id->capability & 4)
+		if (drive->driveid->capability & 4)
 			AP |= 0x20;	/* set IORDY_EN bit */
 		if (drive->media == ide_disk)
 			AP |= 0x10;	/* set Prefetch_EN bit */
@@ -154,10 +154,10 @@ static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
 
 static void pdc202xx_quirkproc(ide_drive_t *drive)
 {
-	const char **list, *model = drive->id->model;
+	const char **list, *m = (char *)&drive->id[ATA_ID_PROD];
 
 	for (list = pdc_quirk_drives; *list != NULL; list++)
-		if (strstr(model, *list) != NULL) {
+		if (strstr(m, *list) != NULL) {
 			drive->quirk_list = 2;
 			return;
 		}
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 8efaed16fea3..5c8367df14e4 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -105,16 +105,18 @@ static u8 sc1200_udma_filter(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	ide_drive_t *mate = &hwif->drives[(drive->dn & 1) ^ 1];
-	struct hd_driveid *mateid = mate->id;
+	u16 *mateid = mate->id;
 	u8 mask = hwif->ultra_mask;
 
 	if (mate->present == 0)
 		goto out;
 
-	if ((mateid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
-		if ((mateid->field_valid & 4) && (mateid->dma_ultra & 7))
+	if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
+		if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
+		    (mateid[ATA_ID_UDMA_MODES] & 7))
 			goto out;
-		if ((mateid->field_valid & 2) && (mateid->dma_mword & 7))
+		if ((mateid[ATA_ID_FIELD_VALID] & 2) &&
+		    (mateid[ATA_ID_MWDMA_MODES] & 7))
 			mask = 0;
 	}
 out:
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index c3bdc6e51a48..ded6a13fd406 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -57,8 +57,10 @@ static struct pci_dev *isa_dev;
 
 static int check_in_drive_lists (ide_drive_t *drive, const char **list)
 {
+	char *m = (char *)&drive->id[ATA_ID_PROD];
+
 	while (*list)
-		if (!strcmp(*list++, drive->id->model))
+		if (!strcmp(*list++, m))
 			return 1;
 	return 0;
 }
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index db2b88a369ab..7b5bd8729f64 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -223,7 +223,9 @@ static u8 sil_pata_udma_filter(ide_drive_t *drive)
 
 static u8 sil_sata_udma_filter(ide_drive_t *drive)
 {
-	return strstr(drive->id->model, "Maxtor") ? ATA_UDMA5 : ATA_UDMA6;
+	char *m = (char *)&drive->id[ATA_ID_PROD];
+
+	return strstr(m, "Maxtor") ? ATA_UDMA5 : ATA_UDMA6;
 }
 
 /**
@@ -616,8 +618,8 @@ static void __devinit init_mmio_iops_siimage(ide_hwif_t *hwif)
 
 static int is_dev_seagate_sata(ide_drive_t *drive)
 {
-	const char *s	= &drive->id->model[0];
-	unsigned len	= strnlen(s, sizeof(drive->id->model));
+	const char *s	= (const char *)&drive->id[ATA_ID_PROD];
+	unsigned len	= strnlen(s, ATA_ID_PROD_LEN);
 
 	if ((len > 4) && (!memcmp(s, "ST", 2)))
 		if ((!memcmp(s + len - 2, "AS", 2)) ||
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index fa2be26272d5..c3432da78d52 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -669,9 +669,9 @@ static void
 set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2,
 		 	u8 speed)
 {
+	u16 *id = drive->id;
 	int cycleTime, accessTime = 0, recTime = 0;
 	unsigned accessTicks, recTicks;
-	struct hd_driveid *id = drive->id;
 	struct mdma_timings_t* tm = NULL;
 	int i;
 
@@ -686,8 +686,8 @@ set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2,
 	}
 
 	/* Check if drive provides explicit DMA cycle time */
-	if ((id->field_valid & 2) && id->eide_dma_time)
-		cycleTime = max_t(int, id->eide_dma_time, cycleTime);
+	if ((id[ATA_ID_FIELD_VALID] & 2) && id[ATA_ID_EIDE_DMA_TIME])
+		cycleTime = max_t(int, id[ATA_ID_EIDE_DMA_TIME], cycleTime);
 
 	/* OHare limits according to some old Apple sources */	
 	if ((intf_type == controller_ohare) && (cycleTime < 150))
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 81c16cba5417..b1b506f31be8 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -452,7 +452,7 @@ static inline void idescsi_add_settings(ide_drive_t *drive) { ; }
  */
 static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
 {
-	if (drive->id && (drive->id->config & 0x0060) == 0x20)
+	if ((drive->id[ATA_ID_CONFIG] & 0x0060) == 0x20)
 		set_bit(IDE_AFLAG_DRQ_INTERRUPT, &drive->atapi_flags);
 	clear_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
 #if IDESCSI_DEBUG_LOG
@@ -811,6 +811,7 @@ static int ide_scsi_probe(ide_drive_t *drive)
 	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");
@@ -836,12 +837,12 @@ static int ide_scsi_probe(ide_drive_t *drive)
 
 	host->max_id = 1;
 
-	if (drive->id->last_lun)
-		debug_log("%s: id->last_lun=%u\n", drive->name,
-			  drive->id->last_lun);
+	last_lun = drive->id[ATA_ID_LAST_LUN];
+	if (last_lun)
+		debug_log("%s: last_lun=%u\n", drive->name, last_lun);
 
-	if ((drive->id->last_lun & 0x7) != 7)
-		host->max_lun = (drive->id->last_lun & 0x7) + 1;
+	if ((last_lun & 7) != 7)
+		host->max_lun = (last_lun & 7) + 1;
 	else
 		host->max_lun = 1;
 
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 6514db8fd2e4..0c85aff3edf1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -380,7 +380,11 @@ struct ide_drive_s {
 	struct request		*rq;	/* current request */
 	struct ide_drive_s 	*next;	/* circular list of hwgroup drives */
 	void		*driver_data;	/* extra driver data */
-	struct hd_driveid	*id;	/* drive model identification info */
+	union {
+		/* identification info */
+		struct hd_driveid	*driveid;
+		u16			*id;
+	};
 #ifdef CONFIG_IDE_PROC_FS
 	struct proc_dir_entry *proc;	/* /proc/ide/ directory entry */
 	struct ide_settings_s *settings;/* /proc/ide/ drive settings */
@@ -920,7 +924,7 @@ ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
 
 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
 
-extern void ide_fix_driveid(struct hd_driveid *);
+void ide_fix_driveid(u16 *);
 
 extern void ide_fixstring(u8 *, const int, const int);
 
@@ -1240,7 +1244,7 @@ struct drive_list_entry {
 	const char *id_firmware;
 };
 
-int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
+int ide_in_drive_list(u16 *, const struct drive_list_entry *);
 
 #ifdef CONFIG_BLK_DEV_IDEDMA
 int __ide_dma_bad_drive(ide_drive_t *);
@@ -1347,12 +1351,13 @@ const char *ide_xfer_verbose(u8 mode);
 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
 
-static inline int ide_dev_has_iordy(struct hd_driveid *id)
+static inline int ide_dev_has_iordy(u16 *id)
 {
-	return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
+	return ((id[ATA_ID_FIELD_VALID] & 2) &&
+		(((struct hd_driveid *)id)->capability & 8)) ? 1 : 0;
 }
 
-static inline int ide_dev_is_sata(struct hd_driveid *id)
+static inline int ide_dev_is_sata(u16 *id)
 {
 	/*
 	 * See if word 93 is 0 AND drive is at least ATA-5 compatible
@@ -1360,7 +1365,7 @@ static inline int ide_dev_is_sata(struct hd_driveid *id)
 	 * this trick allows us to filter out the reserved values of
 	 * 0x0000 and 0xffff along with the earlier ATA revisions...
 	 */
-	if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
+	if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
 		return 1;
 	return 0;
 }
@@ -1437,11 +1442,11 @@ extern struct bus_type ide_bus_type;
 extern struct class *ide_port_class;
 
 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
-#define ide_id_has_flush_cache(id)	((id)->cfs_enable_2 & 0x3000)
+#define ide_id_has_flush_cache(id)	((id)[ATA_ID_CFS_ENABLE_2] & 0x3000)
 
 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
 #define ide_id_has_flush_cache_ext(id)	\
-	(((id)->cfs_enable_2 & 0x2400) == 0x2400)
+	(((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)
 
 static inline void ide_dump_identify(u8 *id)
 {
-- 
cgit v1.2.3


From 48fb2688aa67baba373531cc4ed2d9e695983c3f Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:19 +0200
Subject: ide: remove drive->driveid

* Factor out HDIO_[OBSOLETE,GET]_IDENTITY ioctls handling
  to ide_get_identity_ioctl().

* Use temporary buffer in ide_get_identity_ioctl() instead
  of accessing drive->id directly.

* Add ide_id_to_hd_driveid() inline to convert raw id into
  struct hd_driveid format (needed on big-endian).

* Use ide_id_to_hd_driveid() in ide_get_identity_ioctl(),
  cleanup ide_fix_driveid() and switch ide to use use raw id.

* Remove no longer needed drive->driveid.

  This leaves us with 3 users of struct hd_driveid in tree:
  - arch/um/drivers/ubd_kern.c
  - drivers/block/xsysace.c
  - drivers/usb/storage/isd200.c

While at it:

* Use ata_id_u{32,64}() and ata_id_has_{dma,lba,iordy}() macros.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c         | 23 ++++++++--------
 drivers/ide/ide-dma.c          |  6 ++---
 drivers/ide/ide-iops.c         | 20 ++------------
 drivers/ide/ide-lib.c          |  4 +--
 drivers/ide/ide-probe.c        | 22 ++++++++--------
 drivers/ide/ide-timings.c      |  2 +-
 drivers/ide/ide.c              | 59 ++++++++++++++++++++++++++++++++++++------
 drivers/ide/legacy/qd65xx.c    |  4 +--
 drivers/ide/pci/cs5530.c       |  2 +-
 drivers/ide/pci/it821x.c       |  4 +--
 drivers/ide/pci/pdc202xx_old.c |  2 +-
 drivers/ide/pci/sc1200.c       |  2 +-
 include/linux/ide.h            |  9 ++-----
 13 files changed, 90 insertions(+), 69 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index f1669bca3cab..8f1ec037309a 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -101,13 +101,14 @@ static void ide_disk_put(struct ide_disk_obj *idkp)
  */
 static int lba_capacity_is_ok(u16 *id)
 {
-	struct hd_driveid *driveid = (struct hd_driveid *)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.
@@ -118,10 +119,9 @@ static int lba_capacity_is_ok(u16 *id)
 	     (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) &&
-	    (driveid->lba_capacity >= 16383 * 63 * id[ATA_ID_HEADS]))
+	    (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
 		return 1;
 
-	lba_sects = driveid->lba_capacity;
 	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 */
@@ -133,7 +133,7 @@ static int lba_capacity_is_ok(u16 *id)
 	tail = (lba_sects & 0xffff);
 	lba_sects = (head | (tail << 16));
 	if ((lba_sects - chs_sects) < chs_sects/10) {
-		driveid->lba_capacity = lba_sects;
+		*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
 		return 1;	/* lba_capacity is (now) good */
 	}
 
@@ -403,7 +403,7 @@ static inline int idedisk_supports_lba48(const u16 *id)
 {
 	return (id[ATA_ID_COMMAND_SET_2] & 0x0400) &&
 	       (id[ATA_ID_CFS_ENABLE_2] & 0x0400) &&
-	       ((struct hd_driveid *)id)->lba_capacity_2;
+	       ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
 }
 
 /*
@@ -456,7 +456,6 @@ static void idedisk_check_hpa(ide_drive_t *drive)
 
 static void init_idedisk_capacity(ide_drive_t *drive)
 {
-	struct hd_driveid *driveid = drive->driveid;
 	u16 *id = drive->id;
 	/*
 	 * If this drive supports the Host Protected Area feature set,
@@ -467,13 +466,13 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 	if (idedisk_supports_lba48(id)) {
 		/* drive speaks 48-bit LBA */
 		drive->select.b.lba = 1;
-		drive->capacity64 = driveid->lba_capacity_2;
+		drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
 		if (hpa)
 			idedisk_check_hpa(drive);
-	} else if ((driveid->capability & 2) && lba_capacity_is_ok(id)) {
+	} else if (ata_id_has_lba(id) && lba_capacity_is_ok(id)) {
 		/* drive speaks 28-bit LBA */
 		drive->select.b.lba = 1;
-		drive->capacity64 = driveid->lba_capacity;
+		drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
 		if (hpa)
 			idedisk_check_hpa(drive);
 	} else {
@@ -622,7 +621,7 @@ static int set_multcount(ide_drive_t *drive, int arg)
 	struct request *rq;
 	int error;
 
-	if (arg < 0 || arg > drive->driveid->max_multsect)
+	if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
 		return -EINVAL;
 
 	if (drive->special.b.set_multmode)
@@ -775,8 +774,8 @@ static void idedisk_add_settings(ide_drive_t *drive)
 	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,
-			drive->driveid->max_multsect, 1, 1, &drive->mult_count,
-			set_multcount);
+			drive->id[ATA_ID_MAX_MULTSECT] & 0xff, 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,
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index abab26de7687..15e608f52eba 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -649,8 +649,8 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
 	case XFER_SW_DMA_0:
 		if (id[ATA_ID_FIELD_VALID] & 2) {
 			mask = id[ATA_ID_SWDMA_MODES] & hwif->swdma_mask;
-		} else if (drive->driveid->tDMA) {
-			u8 mode = drive->driveid->tDMA;
+		} else if (id[ATA_ID_OLD_DMA_MODES] >> 8) {
+			u8 mode = id[ATA_ID_OLD_DMA_MODES] >> 8;
 
 			/*
 			 * if the mode is valid convert it to the mask
@@ -727,7 +727,7 @@ static int ide_tune_dma(ide_drive_t *drive)
 	ide_hwif_t *hwif = drive->hwif;
 	u8 speed;
 
-	if (drive->nodma || (drive->driveid->capability & 1) == 0)
+	if (drive->nodma || ata_id_has_dma(drive->id) == 0)
 		return 0;
 
 	/* consult the list of known "bad" drives */
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 01b1943b315e..95495e4219ff 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -404,26 +404,10 @@ void ide_fix_driveid(u16 *id)
 {
 #ifndef __LITTLE_ENDIAN
 # ifdef __BIG_ENDIAN
-	struct hd_driveid *driveid = (struct hd_driveid *)id;
 	int i;
 
-	for (i = 0; i < 256; i++) {
-		/*  these words are accessed as two 8-bit values */
-		if (i == 47 || i == 49 || i == 51 || i == 52 || i == 59)
-			continue;
-		if (i == 60 || i == 61)	/* ->lba_capacity is 32-bit */
-			continue;
-		if (i == 98 || i == 99)	/* ->spg is 32-bit */
-			continue;
-		if (i > 99 && i < 104)	/* ->lba_capacity_2 is 64-bit */
-			continue;
-
+	for (i = 0; i < 256; i++)
 		id[i] = __le16_to_cpu(id[i]);
-	}
-
-	driveid->lba_capacity	= __le32_to_cpu(driveid->lba_capacity);
-	driveid->spg		= __le32_to_cpu(driveid->spg);
-	driveid->lba_capacity_2	= __le64_to_cpu(driveid->lba_capacity_2);
 # else
 #  error "Please fix <asm/byteorder.h>"
 # endif
@@ -752,7 +736,7 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 #endif
 
 	/* Skip setting PIO flow-control modes on pre-EIDE drives */
-	if ((speed & 0xf8) == XFER_PIO_0 && !(drive->driveid->capability & 8))
+	if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0)
 		goto skip;
 
 	/*
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 3066d7e75c73..738c007a04d3 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -102,14 +102,14 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
 	if (pio_mode != -1) {
 		printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
 	} else {
-		pio_mode = drive->driveid->tPIO;
+		pio_mode = id[ATA_ID_OLD_PIO_MODES] >> 8;
 		if (pio_mode > 2) {	/* 2 is maximum allowed tPIO value */
 			pio_mode = 2;
 			overridden = 1;
 		}
 
 		if (id[ATA_ID_FIELD_VALID] & 2) {	      /* ATA2? */
-			if (drive->driveid->capability & 8) { /* IORDY sup? */
+			if (ata_id_has_iordy(id)) {
 				if (id[ATA_ID_PIO_MODES] & 7) {
 					overridden = 0;
 					if (id[ATA_ID_PIO_MODES] & 4)
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index b4f8ca106639..1bb4b2c0e2f4 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -87,20 +87,20 @@ static void ide_disk_init_chs(ide_drive_t *drive)
 
 static void ide_disk_init_mult_count(ide_drive_t *drive)
 {
-	struct hd_driveid *id = drive->driveid;
+	u16 *id = drive->id;
+	u8 max_multsect = id[ATA_ID_MAX_MULTSECT] & 0xff;
 
-	if (id->max_multsect) {
+	if (max_multsect) {
 #ifdef CONFIG_IDEDISK_MULTI_MODE
-		if ((id->max_multsect / 2) > 1) {
-			id->multsect = id->max_multsect;
-			id->multsect_valid = 1;
-		} else {
-			id->multsect = 0;
-			id->multsect_valid = 0;
-		}
-		drive->mult_req = id->multsect;
+		if ((max_multsect / 2) > 1)
+			id[ATA_ID_MULTSECT] = max_multsect | 0x100;
+		else
+			id[ATA_ID_MULTSECT] &= ~0x1ff;
+
+		drive->mult_req = id[ATA_ID_MULTSECT] & 0xff;
 #endif
-		if ((id->multsect_valid & 1) && id->multsect)
+		if ((id[ATA_ID_MULTSECT] & 0x100) &&
+		    (id[ATA_ID_MULTSECT] & 0xff))
 			drive->special.b.set_multmode = 1;
 	}
 }
diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c
index d64f345f2fc0..96e3d467a74c 100644
--- a/drivers/ide/ide-timings.c
+++ b/drivers/ide/ide-timings.c
@@ -83,7 +83,7 @@ u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
 	u16 cycle = 0;
 
 	if (id[ATA_ID_FIELD_VALID] & 2) {
-		if (drive->driveid->capability & 8)
+		if (ata_id_has_iordy(drive->id))
 			cycle = id[ATA_ID_EIDE_PIO_IORDY];
 		else
 			cycle = id[ATA_ID_EIDE_PIO];
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 8d3fab33a3c7..21b3a767e7d7 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -328,7 +328,7 @@ int set_using_dma(ide_drive_t *drive, int arg)
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if ((drive->driveid->capability & 1) == 0)
+	if (ata_id_has_dma(drive->id) == 0)
 		goto out;
 
 	if (hwif->dma_ops == NULL)
@@ -502,12 +502,60 @@ static int generic_drive_reset(ide_drive_t *drive)
 	return ret;
 }
 
+static inline void ide_id_to_hd_driveid(u16 *id)
+{
+#ifdef __BIG_ENDIAN
+	/* accessed in struct hd_driveid as 8-bit values */
+	id[ATA_ID_MAX_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
+	id[ATA_ID_CAPABILITY]	 = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
+	id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
+	id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
+	id[ATA_ID_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MULTSECT]);
+
+	/* as 32-bit values */
+	*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+	*(u32 *)&id[ATA_ID_SPG]		 = ata_id_u32(id, ATA_ID_SPG);
+
+	/* as 64-bit value */
+	*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
+		ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
+#endif
+}
+
+static int ide_get_identity_ioctl(ide_drive_t *drive, unsigned int cmd,
+				  unsigned long arg)
+{
+	u16 *id = NULL;
+	int size = (cmd == HDIO_GET_IDENTITY) ? (ATA_ID_WORDS * 2) : 142;
+	int rc = 0;
+
+	if (drive->id_read == 0) {
+		rc = -ENOMSG;
+		goto out;
+	}
+
+	id = kmalloc(size, GFP_KERNEL);
+	if (id == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	memcpy(id, drive->id, size);
+	ide_id_to_hd_driveid(id);
+
+	if (copy_to_user((void __user *)arg, id, size))
+		rc = -EFAULT;
+
+	kfree(id);
+out:
+	return rc;
+}
+
 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
 			unsigned int cmd, unsigned long arg)
 {
 	unsigned long flags;
 	ide_driver_t *drv;
-	void __user *p = (void __user *)arg;
 	int err = 0, (*setfunc)(ide_drive_t *, int);
 	u8 *val;
 
@@ -528,12 +576,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 		case HDIO_GET_IDENTITY:
 			if (bdev != bdev->bd_contains)
 				return -EINVAL;
-			if (drive->id_read == 0)
-				return -ENOMSG;
-			if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
-				return -EFAULT;
-			return 0;
-
+			return ide_get_identity_ioctl(drive, cmd, arg);
 		case HDIO_GET_NICE:
 			return put_user(drive->dsc_overlap	<<	IDE_NICE_DSC_OVERLAP	|
 					drive->atapi_overlap	<<	IDE_NICE_ATAPI_OVERLAP	|
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index ef4e84053a81..6d7f548655e4 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -195,10 +195,10 @@ static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
 	 * FIXME: use "pio" value
 	 */
 	if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
-	    drive->driveid->tPIO && (id[ATA_ID_FIELD_VALID] & 2) &&
+	    (id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) &&
 	    id[ATA_ID_EIDE_PIO] >= 240) {
 		printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
-				drive->driveid->tPIO);
+			id[ATA_ID_OLD_PIO_MODES] & 0xff);
 		active_time = 110;
 		recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
 	}
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index 774ff58603a2..ef91e9d7c54f 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -88,7 +88,7 @@ static u8 cs5530_udma_filter(ide_drive_t *drive)
 	if (mate->present == 0)
 		goto out;
 
-	if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
+	if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) {
 		if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
 		    (mateid[ATA_ID_UDMA_MODES] & 7))
 			goto out;
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 31d4e6aef1b8..ed24065f74e8 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -470,7 +470,7 @@ static void it821x_quirkproc(ide_drive_t *drive)
 			/* In raid mode the ident block is slightly buggy
 			   We need to set the bits so that the IDE layer knows
 			   LBA28. LBA48 and DMA ar valid */
-			drive->driveid->capability |= 3;      /* LBA28, DMA */
+			id[ATA_ID_CAPABILITY]    |= (3 << 8); /* LBA28, DMA */
 			id[ATA_ID_COMMAND_SET_2] |= 0x0400;   /* LBA48 valid */
 			id[ATA_ID_CFS_ENABLE_2]  |= 0x0400;   /* LBA48 on */
 			/* Reporting logic */
@@ -504,7 +504,7 @@ static void it821x_quirkproc(ide_drive_t *drive)
 		 * IDE core that DMA is supported (it821x hardware
 		 * takes care of DMA mode programming).
 		 */
-		if (drive->driveid->capability & 1) {
+		if (ata_id_has_dma(id)) {
 			id[ATA_ID_MWDMA_MODES] |= 0x0101;
 			drive->current_speed = XFER_MW_DMA_0;
 		}
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 23e861b177ce..5d4436f3efd4 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -86,7 +86,7 @@ static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
 		 * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
 		 */
 		AP &= ~0x3f;
-		if (drive->driveid->capability & 4)
+		if (ata_id_iordy_disable(drive->id))
 			AP |= 0x20;	/* set IORDY_EN bit */
 		if (drive->media == ide_disk)
 			AP |= 0x10;	/* set Prefetch_EN bit */
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 5c8367df14e4..695cc9742048 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -111,7 +111,7 @@ static u8 sc1200_udma_filter(ide_drive_t *drive)
 	if (mate->present == 0)
 		goto out;
 
-	if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
+	if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) {
 		if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
 		    (mateid[ATA_ID_UDMA_MODES] & 7))
 			goto out;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 0c85aff3edf1..e887927e00e6 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -380,11 +380,7 @@ struct ide_drive_s {
 	struct request		*rq;	/* current request */
 	struct ide_drive_s 	*next;	/* circular list of hwgroup drives */
 	void		*driver_data;	/* extra driver data */
-	union {
-		/* identification info */
-		struct hd_driveid	*driveid;
-		u16			*id;
-	};
+	u16			*id;	/* identification info */
 #ifdef CONFIG_IDE_PROC_FS
 	struct proc_dir_entry *proc;	/* /proc/ide/ directory entry */
 	struct ide_settings_s *settings;/* /proc/ide/ drive settings */
@@ -1353,8 +1349,7 @@ extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
 
 static inline int ide_dev_has_iordy(u16 *id)
 {
-	return ((id[ATA_ID_FIELD_VALID] & 2) &&
-		(((struct hd_driveid *)id)->capability & 8)) ? 1 : 0;
+	return ((id[ATA_ID_FIELD_VALID] & 2) && ata_id_has_iordy(id)) ? 1 : 0;
 }
 
 static inline int ide_dev_is_sata(u16 *id)
-- 
cgit v1.2.3


From 8a089c6679a9f1c0a00b7e08554e90b507ec527a Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:20 +0200
Subject: ide-disk: use ata_id_wcache_enabled()

Replace open-coded check by ata_id_wcache_enabled()
(which also checks validity of word 85).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 8f1ec037309a..696658d504db 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -889,7 +889,7 @@ static void idedisk_setup(ide_drive_t *drive)
 			 drive->bios_cyl, drive->bios_head, drive->bios_sect);
 
 	/* write cache enabled? */
-	if ((id[ATA_ID_CSFO] & 1) || (id[ATA_ID_CFS_ENABLE_1] & (1 << 5)))
+	if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
 		drive->wcache = 1;
 
 	write_cache(drive, 1);
-- 
cgit v1.2.3


From f41891c134ccdd07583ebd8d4af7fed883375672 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:20 +0200
Subject: ide-disk: use ata_id_hpa_enabled()

idedisk_supports_hpa() -> ata_id_hpa_enabled().

The latter one also checks validity of words 82 & 85.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 696658d504db..40253c51ace4 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -385,17 +385,6 @@ static unsigned long long sectors_to_MB(unsigned long long n)
 	return 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 u16 *id)
-{
-	return (id[ATA_ID_COMMAND_SET_1] & 0x0400) &&
-	       (id[ATA_ID_CFS_ENABLE_1] & 0x0400);
-}
-
 /*
  * The same here.
  */
@@ -461,7 +450,7 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 	 * 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);
+	int hpa = ata_id_hpa_enabled(id);
 
 	if (idedisk_supports_lba48(id)) {
 		/* drive speaks 48-bit LBA */
@@ -939,7 +928,7 @@ 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);
 }
 
-- 
cgit v1.2.3


From aaaade3f059fa1b57283d4a7c8351a42ec747bf0 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:21 +0200
Subject: ide: WIN_* -> ATA_CMD_*

* Use ATA_CMD_* defines instead of WIN_* ones.

While at it:

* EXABYTE_ENABLE_NEXT -> ATA_EXABYTE_ENABLE_NEST

* SETFEATURES_{EN,DIS}_WCACHE -> SETFEATURES_WC_{ON,OFF}

* SETFEATURES_{EN,DIS}_AAM -> SETFEATURES_AAM_{ON,OFF}

* SMART_* -> ATA_SMART_*

* Remove stale comment from ide-proc.c.

Partially based on earlier work by Chris Wedgwood.

Acked-by: Chris Wedgwood <cw@f00f.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-atapi.c    |  2 +-
 drivers/ide/ide-cd.c       |  2 +-
 drivers/ide/ide-disk.c     | 68 +++++++++++++++++++++++-----------------------
 drivers/ide/ide-io.c       | 27 +++++++++---------
 drivers/ide/ide-iops.c     | 10 +++----
 drivers/ide/ide-probe.c    | 34 +++++++++++------------
 drivers/ide/ide-proc.c     | 10 +------
 drivers/ide/ide-taskfile.c | 27 ++++++++++--------
 drivers/scsi/ide-scsi.c    |  2 +-
 9 files changed, 89 insertions(+), 93 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index adf04f99cdeb..2433fce6c111 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -303,7 +303,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
 
 	/* Issue the packet command */
 	if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
-		ide_execute_command(drive, WIN_PACKETCMD, handler,
+		ide_execute_command(drive, ATA_CMD_PACKET, handler,
 				    timeout, NULL);
 		return ide_started;
 	} else {
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 46f9720f1ec9..77e0f9ab7698 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -541,7 +541,7 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
 			drive->waiting_for_dma = 0;
 
 		/* packet command */
-		ide_execute_command(drive, WIN_PACKETCMD, handler,
+		ide_execute_command(drive, ATA_CMD_PACKET, handler,
 				    ATAPI_WAIT_PC, cdrom_timer_expiry);
 		return ide_started;
 	} else {
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 40253c51ace4..83da9a98dabc 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -141,18 +141,18 @@ static int lba_capacity_is_ok(u16 *id)
 }
 
 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[] = {
@@ -323,9 +323,9 @@ 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)
@@ -360,10 +360,10 @@ 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;
@@ -482,10 +482,10 @@ static int smart_enable(ide_drive_t *drive)
 	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;
+	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);
 }
@@ -498,9 +498,9 @@ static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
 	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;
+	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);
@@ -558,14 +558,14 @@ 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,
-				       SMART_READ_VALUES);
+				       ATA_SMART_READ_VALUES);
 }
 
 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);
+				       ATA_SMART_READ_THRESHOLDS);
 }
 
 static ide_proc_entry_t idedisk_proc[] = {
@@ -589,9 +589,9 @@ static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
 	memset(task, 0, sizeof(*task));
 	if (ide_id_has_flush_cache_ext(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;
@@ -686,8 +686,8 @@ static int write_cache(ide_drive_t *drive, int arg)
 	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;
+			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)
@@ -705,9 +705,9 @@ static int do_idedisk_flushcache(ide_drive_t *drive)
 
 	memset(&args, 0, sizeof(ide_task_t));
 	if (ide_id_has_flush_cache_ext(drive->id))
-		args.tf.command = WIN_FLUSH_CACHE_EXT;
+		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);
 }
@@ -720,9 +720,9 @@ static int set_acoustic(ide_drive_t *drive, int arg)
 		return -EINVAL;
 
 	memset(&args, 0, sizeof(ide_task_t));
-	args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM;
+	args.tf.feature = arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF;
 	args.tf.nsect   = arg;
-	args.tf.command = WIN_SETFEATURES;
+	args.tf.command = ATA_CMD_SET_FEATURES;
 	args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
 	ide_no_data_taskfile(drive, &args);
 	drive->acoustic = arg;
@@ -985,7 +985,7 @@ 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);
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 1678043701df..ce9ecd138836 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -188,13 +188,13 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
 			return ide_stopped;
 		}
 		if (ide_id_has_flush_cache_ext(drive->id))
-			args->tf.command = WIN_FLUSH_CACHE_EXT;
+			args->tf.command = ATA_CMD_FLUSH_EXT;
 		else
-			args->tf.command = WIN_FLUSH_CACHE;
+			args->tf.command = ATA_CMD_FLUSH;
 		goto out_do_tf;
 
 	case idedisk_pm_standby:	/* Suspend step 2 (standby) */
-		args->tf.command = WIN_STANDBYNOW1;
+		args->tf.command = ATA_CMD_STANDBYNOW1;
 		goto out_do_tf;
 
 	case idedisk_pm_restore_pio:	/* Resume step 1 (restore PIO) */
@@ -209,7 +209,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
 		return ide_stopped;
 
 	case idedisk_pm_idle:		/* Resume step 2 (idle) */
-		args->tf.command = WIN_IDLEIMMEDIATE;
+		args->tf.command = ATA_CMD_IDLEIMMEDIATE;
 		goto out_do_tf;
 
 	case ide_pm_restore_dma:	/* Resume step 3 (restore DMA) */
@@ -380,8 +380,8 @@ static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq, u8
 		/* err has different meaning on cdrom and tape */
 		if (err == ABRT_ERR) {
 			if (drive->select.b.lba &&
-			    /* some newer drives don't support WIN_SPECIFY */
-			    hwif->tp_ops->read_status(hwif) == WIN_SPECIFY)
+			    /* some newer drives don't support ATA_CMD_INIT_DEV_PARAMS */
+			    hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)
 				return ide_stopped;
 		} else if ((err & BAD_CRC) == BAD_CRC) {
 			/* UDMA crc error, just retry the operation */
@@ -436,7 +436,7 @@ static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u
 
 	if (hwif->tp_ops->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
 		/* force an abort */
-		hwif->tp_ops->exec_command(hwif, WIN_IDLEIMMEDIATE);
+		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
 
 	if (rq->errors >= ERROR_MAX) {
 		ide_kill_rq(drive, rq);
@@ -509,19 +509,19 @@ static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
 	tf->lbam    = drive->cyl;
 	tf->lbah    = drive->cyl >> 8;
 	tf->device  = ((drive->head - 1) | drive->select.all) & ~ATA_LBA;
-	tf->command = WIN_SPECIFY;
+	tf->command = ATA_CMD_INIT_DEV_PARAMS;
 }
 
 static void ide_tf_set_restore_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
 {
 	tf->nsect   = drive->sect;
-	tf->command = WIN_RESTORE;
+	tf->command = ATA_CMD_RESTORE;
 }
 
 static void ide_tf_set_setmult_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
 {
 	tf->nsect   = drive->mult_req;
-	tf->command = WIN_SETMULT;
+	tf->command = ATA_CMD_SET_MULTI;
 }
 
 static ide_startstop_t ide_disk_special(ide_drive_t *drive)
@@ -584,9 +584,10 @@ static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
  *	do_special		-	issue some special commands
  *	@drive: drive the command is for
  *
- *	do_special() is used to issue WIN_SPECIFY, WIN_RESTORE, and WIN_SETMULT
- *	commands to a drive.  It used to do much more, but has been scaled
- *	back.
+ *	do_special() is used to issue ATA_CMD_INIT_DEV_PARAMS,
+ *	ATA_CMD_RESTORE and ATA_CMD_SET_MULTI commands to a drive.
+ *
+ *	It used to do much more, but has been scaled back.
  */
 
 static ide_startstop_t do_special (ide_drive_t *drive)
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 95495e4219ff..21647a2eaff9 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -418,7 +418,7 @@ void ide_fix_driveid(u16 *id)
  * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
  * removing leading/trailing blanks and compressing internal blanks.
  * It is primarily used to tidy up the model name/number fields as
- * returned by the WIN_[P]IDENTIFY commands.
+ * returned by the ATA_CMD_ID_ATA[PI] commands.
  */
 
 void ide_fixstring (u8 *s, const int bytecount, const int byteswap)
@@ -675,7 +675,7 @@ int ide_driveid_update(ide_drive_t *drive)
 	SELECT_MASK(drive, 1);
 	tp_ops->set_irq(hwif, 0);
 	msleep(50);
-	tp_ops->exec_command(hwif, WIN_IDENTIFY);
+	tp_ops->exec_command(hwif, ATA_CMD_ID_ATA);
 	timeout = jiffies + WAIT_WORSTCASE;
 	do {
 		if (time_after(jiffies, timeout)) {
@@ -770,7 +770,7 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 
 	tp_ops->tf_load(drive, &task);
 
-	tp_ops->exec_command(hwif, WIN_SETFEATURES);
+	tp_ops->exec_command(hwif, ATA_CMD_SET_FEATURES);
 
 	if (drive->quirk_list == 2)
 		tp_ops->set_irq(hwif, 1);
@@ -890,7 +890,7 @@ void ide_execute_pkt_cmd(ide_drive_t *drive)
 	unsigned long flags;
 
 	spin_lock_irqsave(&ide_lock, flags);
-	hwif->tp_ops->exec_command(hwif, WIN_PACKETCMD);
+	hwif->tp_ops->exec_command(hwif, ATA_CMD_PACKET);
 	ndelay(400);
 	spin_unlock_irqrestore(&ide_lock, flags);
 }
@@ -1100,7 +1100,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 		pre_reset(drive);
 		SELECT_DRIVE(drive);
 		udelay (20);
-		tp_ops->exec_command(hwif, WIN_SRST);
+		tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
 		ndelay(400);
 		hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
 		hwgroup->polling = 1;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 2f105f4bbdec..4829daacb342 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -132,10 +132,10 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 	ide_fix_driveid(id);
 
 	/*
-	 *  WIN_IDENTIFY returns little-endian info,
-	 *  WIN_PIDENTIFY *usually* returns little-endian info.
+	 *  ATA_CMD_ID_ATA returns little-endian info,
+	 *  ATA_CMD_ID_ATAPI *usually* returns little-endian info.
 	 */
-	if (cmd == WIN_PIDENTIFY) {
+	if (cmd == ATA_CMD_ID_ATAPI) {
 		if ((m[0] == 'N' && m[1] == 'E') ||  /* NEC */
 		    (m[0] == 'F' && m[1] == 'X') ||  /* Mitsumi */
 		    (m[0] == 'P' && m[1] == 'i'))    /* Pioneer */
@@ -161,7 +161,7 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
 	/*
 	 * Check for an ATAPI device
 	 */
-	if (cmd == WIN_PIDENTIFY) {
+	if (cmd == ATA_CMD_ID_ATAPI) {
 		u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f;
 
 		printk(KERN_CONT "ATAPI ");
@@ -277,7 +277,7 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
 	/* set features register for atapi
 	 * identify command to be sure of reply
 	 */
-	if (cmd == WIN_PIDENTIFY) {
+	if (cmd == ATA_CMD_ID_ATAPI) {
 		ide_task_t task;
 
 		memset(&task, 0, sizeof(task));
@@ -290,7 +290,7 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
 	/* ask drive for ID */
 	tp_ops->exec_command(hwif, cmd);
 
-	timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
+	timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
 	timeout += jiffies;
 	do {
 		if (time_after(jiffies, timeout)) {
@@ -440,13 +440,13 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
 
 	if (drive->present) {
 		/* avoid waiting for inappropriate probes */
-		if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY))
+		if (drive->media != ide_disk && cmd == ATA_CMD_ID_ATA)
 			return 4;
 	}
 #ifdef DEBUG
 	printk(KERN_INFO "probing for %s: present=%d, media=%d, probetype=%s\n",
 		drive->name, drive->present, drive->media,
-		(cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI");
+		(cmd == ATA_CMD_ID_ATA) ? "ATA" : "ATAPI");
 #endif
 
 	/* needed for some systems
@@ -470,7 +470,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
 	stat = tp_ops->read_status(hwif);
 
 	if (OK_STAT(stat, READY_STAT, BUSY_STAT) ||
-	    drive->present || cmd == WIN_PIDENTIFY) {
+	    drive->present || cmd == ATA_CMD_ID_ATAPI) {
 		/* send cmd and wait */
 		if ((rc = try_to_identify(drive, cmd))) {
 			/* failed: try again */
@@ -482,13 +482,13 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
 		if (stat == (BUSY_STAT | READY_STAT))
 			return 4;
 
-		if (rc == 1 && cmd == WIN_PIDENTIFY) {
+		if (rc == 1 && cmd == ATA_CMD_ID_ATAPI) {
 			printk(KERN_ERR "%s: no response (status = 0x%02x), "
 					"resetting drive\n", drive->name, stat);
 			msleep(50);
 			SELECT_DRIVE(drive);
 			msleep(50);
-			tp_ops->exec_command(hwif, WIN_SRST);
+			tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
 			(void)ide_busy_sleep(hwif);
 			rc = try_to_identify(drive, cmd);
 		}
@@ -527,7 +527,7 @@ static void enable_nest (ide_drive_t *drive)
 
 	SELECT_DRIVE(drive);
 	msleep(50);
-	tp_ops->exec_command(hwif, EXABYTE_ENABLE_NEST);
+	tp_ops->exec_command(hwif, ATA_EXABYTE_ENABLE_NEST);
 
 	if (ide_busy_sleep(hwif)) {
 		printk(KERN_CONT "failed (timeout)\n");
@@ -544,10 +544,9 @@ static void enable_nest (ide_drive_t *drive)
 		printk(KERN_CONT "success\n");
 
 	/* if !(success||timed-out) */
-	if (do_probe(drive, WIN_IDENTIFY) >= 2) {
+	if (do_probe(drive, ATA_CMD_ID_ATA) >= 2)
 		/* look for ATAPI device */
-		(void) do_probe(drive, WIN_PIDENTIFY);
-	}
+		(void)do_probe(drive, ATA_CMD_ID_ATAPI);
 }
 
 /**
@@ -590,10 +589,9 @@ static inline u8 probe_for_drive (ide_drive_t *drive)
 	if (!drive->noprobe)
 	{
 		/* if !(success||timed-out) */
-		if (do_probe(drive, WIN_IDENTIFY) >= 2) {
+		if (do_probe(drive, ATA_CMD_ID_ATA) >= 2)
 			/* look for ATAPI device */
-			(void) do_probe(drive, WIN_PIDENTIFY);
-		}
+			(void)do_probe(drive, ATA_CMD_ID_ATAPI);
 		if (!drive->present)
 			/* drive not found */
 			return 0;
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 0bdbb9bf90ba..22f41fa4e5b6 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -12,14 +12,6 @@
  * "settings" files.  e.g.    "cat /proc/ide0/hda/settings"
  * To write a new value "val" into a specific setting "name", use:
  *   echo "name:val" >/proc/ide/ide0/hda/settings
- *
- * Also useful, "cat /proc/ide0/hda/[identify, smart_values,
- * smart_thresholds, capabilities]" will issue an IDENTIFY /
- * PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
- * SENSE CAPABILITIES command to /dev/hda, and then dump out the
- * returned data as 256 16-bit words.  The "hdparm" utility will
- * be updated someday soon to use this mechanism.
- *
  */
 
 #include <linux/module.h>
@@ -349,7 +341,7 @@ static int set_xfer_rate (ide_drive_t *drive, int arg)
 		return -EINVAL;
 
 	memset(&task, 0, sizeof(task));
-	task.tf.command = WIN_SETFEATURES;
+	task.tf.command = ATA_CMD_SET_FEATURES;
 	task.tf.feature = SETFEATURES_XFER;
 	task.tf.nsect   = (u8)arg;
 	task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index f889373d7f95..9224f6797186 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -44,9 +44,9 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
 	memset(&args, 0, sizeof(ide_task_t));
 	args.tf.nsect = 0x01;
 	if (drive->media == ide_disk)
-		args.tf.command = WIN_IDENTIFY;
+		args.tf.command = ATA_CMD_ID_ATA;
 	else
-		args.tf.command = WIN_PIDENTIFY;
+		args.tf.command = ATA_CMD_ID_ATAPI;
 	args.tf_flags	= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
 	args.data_phase	= TASKFILE_IN;
 	return ide_raw_taskfile(drive, &args, buf, 1);
@@ -99,12 +99,17 @@ ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
 	case TASKFILE_NO_DATA:
 		if (handler == NULL)
 			handler = task_no_data_intr;
-		/* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
 		if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) {
 			switch (tf->command) {
-			case WIN_SPECIFY: handler = set_geometry_intr;	break;
-			case WIN_RESTORE: handler = recal_intr;		break;
-			case WIN_SETMULT: handler = set_multmode_intr;	break;
+			case ATA_CMD_INIT_DEV_PARAMS:
+				handler = set_geometry_intr;
+				break;
+			case ATA_CMD_RESTORE:
+				handler = recal_intr;
+				break;
+			case ATA_CMD_SET_MULTI:
+				handler = set_multmode_intr;
+				break;
 			}
 		}
 		ide_execute_command(drive, tf->command, handler,
@@ -121,7 +126,7 @@ ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
 EXPORT_SYMBOL_GPL(do_rw_taskfile);
 
 /*
- * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
+ * set_multmode_intr() is invoked on completion of a ATA_CMD_SET_MULTI cmd.
  */
 static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
 {
@@ -142,7 +147,7 @@ static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
 }
 
 /*
- * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
+ * set_geometry_intr() is invoked on completion of a ATA_CMD_INIT_DEV_PARAMS cmd.
  */
 static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
 {
@@ -170,7 +175,7 @@ static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
 }
 
 /*
- * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
+ * recal_intr() is invoked on completion of a ATA_CMD_RESTORE (recalibrate) cmd.
  */
 static ide_startstop_t recal_intr(ide_drive_t *drive)
 {
@@ -747,7 +752,7 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 
 	memset(&tfargs, 0, sizeof(ide_task_t));
 	tf->feature = args[2];
-	if (args[0] == WIN_SMART) {
+	if (args[0] == ATA_CMD_SMART) {
 		tf->nsect = args[3];
 		tf->lbal  = args[1];
 		tf->lbam  = 0x4f;
@@ -769,7 +774,7 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 			return -ENOMEM;
 	}
 
-	if (tf->command == WIN_SETFEATURES &&
+	if (tf->command == ATA_CMD_SET_FEATURES &&
 	    tf->feature == SETFEATURES_XFER &&
 	    tf->nsect >= XFER_SW_DMA_0 &&
 	    (id[ATA_ID_UDMA_MODES] ||
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index b1b506f31be8..167c3b625218 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -246,7 +246,7 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
 
 	if (hwif->tp_ops->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
 		/* force an abort */
-		hwif->tp_ops->exec_command(hwif, WIN_IDLEIMMEDIATE);
+		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
 
 	rq->errors++;
 
-- 
cgit v1.2.3


From 3c619ffd48d7fdb3b17f0df67c4eb4b0bd80e253 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:22 +0200
Subject: ide: remove no longer needed ide_drive_t fields

Remove ->remap_0_to_1 and ->sect0 (they are always zero now).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c |  2 +-
 drivers/ide/ide-io.c   | 18 +++---------------
 include/linux/ide.h    |  2 --
 3 files changed, 4 insertions(+), 18 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 83da9a98dabc..d4d730252669 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -472,7 +472,7 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 
 static sector_t idedisk_capacity(ide_drive_t *drive)
 {
-	return drive->capacity64 - drive->sect0;
+	return drive->capacity64;
 }
 
 #ifdef CONFIG_IDE_PROC_FS
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 8dd7b46b41b7..96975e24a0cc 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -765,9 +765,7 @@ static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
  *	start_request	-	start of I/O and command issuing for IDE
  *
  *	start_request() initiates handling of a new I/O request. It
- *	accepts commands and I/O (read/write) requests. It also does
- *	the final remapping for weird stuff like EZDrive. Once 
- *	device mapper can work sector level the EZDrive stuff can go away
+ *	accepts commands and I/O (read/write) requests.
  *
  *	FIXME: this function needs a rename
  */
@@ -775,7 +773,6 @@ static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
 static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 {
 	ide_startstop_t startstop;
-	sector_t block;
 
 	BUG_ON(!blk_rq_started(rq));
 
@@ -790,16 +787,6 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 		goto kill_rq;
 	}
 
-	block    = rq->sector;
-	if (blk_fs_request(rq) &&
-	    (drive->media == ide_disk || drive->media == ide_floppy)) {
-		block += drive->sect0;
-	}
-	/* Yecch - this will shift the entire interval,
-	   possibly killing some innocent following sector */
-	if (block == 0 && drive->remap_0_to_1 == 1)
-		block = 1;  /* redirect MBR access to EZ-Drive partn table */
-
 	if (blk_pm_request(rq))
 		ide_check_pm_state(drive, rq);
 
@@ -844,7 +831,8 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 			return ide_special_rq(drive, rq);
 
 		drv = *(ide_driver_t **)rq->rq_disk->private_data;
-		return drv->do_request(drive, rq, block);
+
+		return drv->do_request(drive, rq, rq->sector);
 	}
 	return do_special(drive);
 kill_rq:
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d963c1929c84..ca0b132de1ae 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -418,7 +418,6 @@ struct ide_drive_s {
 	unsigned atapi_overlap	: 1;	/* ATAPI overlap (not supported) */
 	unsigned doorlocking	: 1;	/* for removable only: door lock/unlock works */
 	unsigned nodma		: 1;	/* disallow DMA */
-	unsigned remap_0_to_1	: 1;	/* 0=noremap, 1=remap 0->1 (for EZDrive) */
 	unsigned blocked        : 1;	/* 1=powermanagment told us not to do anything, so sleep nicely */
 	unsigned scsi		: 1;	/* 0=default, 1=ide-scsi emulation */
 	unsigned sleeping	: 1;	/* 1=sleeping & sleep field valid */
@@ -441,7 +440,6 @@ struct ide_drive_s {
 	u8	io_32bit;	/* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
 	u8	bad_wstat;	/* used for ignoring ATA_DF */
 	u8	nowerr;		/* used for ignoring ATA_DF */
-	u8	sect0;		/* offset of first sector for DM6:DDO */
 	u8	head;		/* "real" number of heads */
 	u8	sect;		/* "real" sectors per track */
 	u8	bios_head;	/* BIOS/fdisk/LILO number of heads */
-- 
cgit v1.2.3


From 3cd5f1eae093a7d6ff8a63c746eba9d6f689ba91 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:24 +0200
Subject: ide: remove unused _IDE_C and _IDE_DISK defines

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 3 ---
 drivers/ide/ide.c      | 2 --
 2 files changed, 5 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index d4d730252669..edfa63750dde 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -30,9 +30,6 @@
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/leds.h>
-
-#define _IDE_DISK
-
 #include <linux/ide.h>
 
 #include <asm/byteorder.h>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 7fddfe161795..27d5d6a1625f 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -44,8 +44,6 @@
  *  inspiration from lots of linux users, esp.  hamish@zot.apana.org.au
  */
 
-#define _IDE_C			/* Tell ide.h it's really us */
-
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/string.h>
-- 
cgit v1.2.3


From 2a924662b646fa25cb491d50aa1202a94aa4ac55 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:24 +0200
Subject: ide: remove needless drive->present checks from device drivers

Remove needless drive->present checks from ->probe methods
(device model takes care of that).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-cd.c     | 4 ++--
 drivers/ide/ide-disk.c   | 3 +--
 drivers/ide/ide-floppy.c | 4 ++--
 drivers/ide/ide-tape.c   | 4 ++--
 drivers/scsi/ide-scsi.c  | 1 -
 5 files changed, 7 insertions(+), 9 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index accb53b85ba7..607af5de16f8 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -2109,10 +2109,10 @@ static int ide_cd_probe(ide_drive_t *drive)
 
 	if (!strstr("ide-cdrom", drive->driver_req))
 		goto failed;
-	if (!drive->present)
-		goto failed;
+
 	if (drive->media != ide_cdrom && drive->media != ide_optical)
 		goto failed;
+
 	/* skip drives that we were told to ignore */
 	if (ignore != NULL) {
 		if (strstr(ignore, drive->name)) {
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index edfa63750dde..eeb2c3b22e97 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -1136,8 +1136,7 @@ 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;
 
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 59baa9643f8b..327960380908 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1390,10 +1390,10 @@ static int ide_floppy_probe(ide_drive_t *drive)
 
 	if (!strstr("ide-floppy", drive->driver_req))
 		goto failed;
-	if (!drive->present)
-		goto failed;
+
 	if (drive->media != ide_floppy)
 		goto failed;
+
 	if (!idefloppy_identify_device(drive, drive->id)) {
 		printk(KERN_ERR "ide-floppy: %s: not supported by this version"
 				" of ide-floppy\n", drive->name);
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 2745e5d26848..874e60fc85d1 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2647,10 +2647,10 @@ static int ide_tape_probe(ide_drive_t *drive)
 
 	if (!strstr("ide-tape", drive->driver_req))
 		goto failed;
-	if (!drive->present)
-		goto failed;
+
 	if (drive->media != ide_tape)
 		goto failed;
+
 	if (!idetape_identify_device(drive)) {
 		printk(KERN_ERR "ide-tape: %s: not supported by this version of"
 				" the driver\n", drive->name);
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index daa5f3115ddc..6a661a4454ee 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -822,7 +822,6 @@ static int ide_scsi_probe(ide_drive_t *drive)
 		return -ENODEV;
 
 	if (!strstr("ide-scsi", drive->driver_req) ||
-	    !drive->present ||
 	    drive->media == ide_disk ||
 	    !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
 		return -ENODEV;
-- 
cgit v1.2.3


From 3ceca727fe3a38dd8d7a3adf938fefda83eee8af Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:27 +0200
Subject: ide: include <linux/hdreg.h> only when needed

* Include <linux/ata.h> directly in <linux/ide.h>
  instead of through <linux/hdreg.h>.

* Include <linux/hdreg.h> only when needed.

Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/icside.c       | 1 -
 drivers/ide/arm/palm_bk3710.c  | 1 -
 drivers/ide/ide-disk.c         | 1 +
 drivers/ide/ide-floppy.c       | 1 +
 drivers/ide/ide-io.c           | 1 +
 drivers/ide/ide-iops.c         | 1 -
 drivers/ide/ide-lib.c          | 1 -
 drivers/ide/ide-proc.c         | 1 -
 drivers/ide/ide-timings.c      | 1 -
 drivers/ide/ide.c              | 1 +
 drivers/ide/legacy/ali14xx.c   | 1 -
 drivers/ide/legacy/buddha.c    | 1 -
 drivers/ide/legacy/dtc2278.c   | 1 -
 drivers/ide/legacy/falconide.c | 1 -
 drivers/ide/legacy/gayle.c     | 1 -
 drivers/ide/legacy/ht6560b.c   | 1 -
 drivers/ide/legacy/ide-cs.c    | 1 -
 drivers/ide/legacy/macide.c    | 1 -
 drivers/ide/legacy/q40ide.c    | 2 --
 drivers/ide/legacy/qd65xx.c    | 1 -
 drivers/ide/legacy/umc8672.c   | 1 -
 drivers/ide/pci/aec62xx.c      | 1 -
 drivers/ide/pci/alim15x3.c     | 1 -
 drivers/ide/pci/atiixp.c       | 1 -
 drivers/ide/pci/cmd640.c       | 1 -
 drivers/ide/pci/cmd64x.c       | 1 -
 drivers/ide/pci/cs5520.c       | 1 -
 drivers/ide/pci/cs5530.c       | 1 -
 drivers/ide/pci/delkin_cb.c    | 1 -
 drivers/ide/pci/generic.c      | 1 -
 drivers/ide/pci/hpt34x.c       | 1 -
 drivers/ide/pci/hpt366.c       | 1 -
 drivers/ide/pci/it8213.c       | 1 -
 drivers/ide/pci/it821x.c       | 1 -
 drivers/ide/pci/jmicron.c      | 1 -
 drivers/ide/pci/ns87415.c      | 1 -
 drivers/ide/pci/opti621.c      | 1 -
 drivers/ide/pci/pdc202xx_new.c | 1 -
 drivers/ide/pci/pdc202xx_old.c | 1 -
 drivers/ide/pci/piix.c         | 1 -
 drivers/ide/pci/rz1000.c       | 1 -
 drivers/ide/pci/sc1200.c       | 1 -
 drivers/ide/pci/scc_pata.c     | 1 -
 drivers/ide/pci/serverworks.c  | 1 -
 drivers/ide/pci/sgiioc4.c      | 1 -
 drivers/ide/pci/siimage.c      | 1 -
 drivers/ide/pci/sis5513.c      | 1 -
 drivers/ide/pci/sl82c105.c     | 1 -
 drivers/ide/pci/slc90e66.c     | 1 -
 drivers/ide/pci/triflex.c      | 1 -
 drivers/ide/pci/trm290.c       | 1 -
 drivers/scsi/ide-scsi.c        | 1 -
 include/linux/ide.h            | 2 +-
 53 files changed, 5 insertions(+), 50 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index ca9e8ea32ee2..70f5b164828b 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -10,7 +10,6 @@
 #include <linux/slab.h>
 #include <linux/blkdev.h>
 #include <linux/errno.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/dma-mapping.h>
 #include <linux/device.h>
diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index 320971c78cb7..122ed3c072fd 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -27,7 +27,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/delay.h>
 #include <linux/init.h>
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index eeb2c3b22e97..6e1a25e61df5 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -31,6 +31,7 @@
 #include <linux/mutex.h>
 #include <linux/leds.h>
 #include <linux/ide.h>
+#include <linux/hdreg.h>
 
 #include <asm/byteorder.h>
 #include <asm/irq.h>
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 327960380908..b0f4d8459a9d 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -31,6 +31,7 @@
 #include <linux/slab.h>
 #include <linux/cdrom.h>
 #include <linux/ide.h>
+#include <linux/hdreg.h>
 #include <linux/bitops.h>
 #include <linux/mutex.h>
 
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 96975e24a0cc..99e0bbca3ace 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -40,6 +40,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/ide.h>
+#include <linux/hdreg.h>
 #include <linux/completion.h>
 #include <linux/reboot.h>
 #include <linux/cdrom.h>
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index a940d127aae3..ee44878e40d0 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -18,7 +18,6 @@
 #include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/bitops.h>
 #include <linux/nmi.h>
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index c5c37bfd8b09..ed426dd0fdd8 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -2,7 +2,6 @@
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/bitops.h>
 
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 22f41fa4e5b6..cbe5a7efbbad 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -23,7 +23,6 @@
 #include <linux/mm.h>
 #include <linux/pci.h>
 #include <linux/ctype.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/seq_file.h>
 
diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c
index 96e3d467a74c..81f527af8fae 100644
--- a/drivers/ide/ide-timings.c
+++ b/drivers/ide/ide-timings.c
@@ -22,7 +22,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/module.h>
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 27d5d6a1625f..080314e3d6b7 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -56,6 +56,7 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
+#include <linux/hdreg.h>
 #include <linux/completion.h>
 #include <linux/device.h>
 
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 4ec19737f3c5..7276c96aaa2a 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -43,7 +43,6 @@
 #include <linux/mm.h>
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/legacy/buddha.c b/drivers/ide/legacy/buddha.c
index 7c2afa97f417..c5a3c9ef6a5d 100644
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -20,7 +20,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/zorro.h>
 #include <linux/ide.h>
 #include <linux/init.h>
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c
index af791a02a120..689b2e493413 100644
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -10,7 +10,6 @@
 #include <linux/mm.h>
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index 724f95073d80..39d500d84b07 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -13,7 +13,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c
index 51ba085d7aa8..691506886561 100644
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -12,7 +12,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 #include <linux/zorro.h>
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index 98f7c95e39ed..5123ea291d07 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -24,7 +24,6 @@
 #include <linux/mm.h>
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index 21bfac137844..ee6fc30d5e2b 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -38,7 +38,6 @@
 #include <linux/timer.h>
 #include <linux/ioport.h>
 #include <linux/ide.h>
-#include <linux/hdreg.h>
 #include <linux/major.h>
 #include <linux/delay.h>
 #include <asm/io.h>
diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
index a0bb167980e7..43f97cc1d30e 100644
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -15,7 +15,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/delay.h>
 #include <linux/ide.h>
 
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 4abd8fc78197..4af4a8ce4cdf 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -14,8 +14,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
-
 #include <linux/ide.h>
 
     /*
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 6d7f548655e4..ec408b3a7100 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -27,7 +27,6 @@
 #include <linux/mm.h>
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 #include <asm/system.h>
diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/legacy/umc8672.c
index b54a14a57755..1da076e0c917 100644
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -45,7 +45,6 @@
 #include <linux/mm.h>
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 3187215e8f89..f65828da65d0 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -7,7 +7,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index fcc701b3c0a2..ef41e2677a56 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -31,7 +31,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 #include <linux/dmi.h>
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 41f6cb6c163a..86e3120cb7c1 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -7,7 +7,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index e6c62006ca1a..5b756757e049 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -103,7 +103,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index e064398e03b4..13dfeab1d19f 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -13,7 +13,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index 151844fcbb07..27163147896b 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -35,7 +35,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index 804ecabbd65f..d60806bd7dba 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -15,7 +15,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index f84bfb4f600f..83b63b365e51 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -19,7 +19,6 @@
 
 #include <linux/types.h>
 #include <linux/module.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 #include <linux/pci.h>
diff --git a/drivers/ide/pci/generic.c b/drivers/ide/pci/generic.c
index b07d4f4273b3..bdc539868701 100644
--- a/drivers/ide/pci/generic.c
+++ b/drivers/ide/pci/generic.c
@@ -22,7 +22,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 #include <linux/init.h>
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index 6009b0b9655d..4f624899f44a 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -27,7 +27,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
-#include <linux/hdreg.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/init.h>
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index b7f77fd3cb6e..d706eb6b8acd 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -122,7 +122,6 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/init.h>
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 652e47dd7e89..a0e058a2abfe 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -10,7 +10,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index ed24065f74e8..0fdea7e91a7a 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -63,7 +63,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index bb9d09d8f196..4010b4a8dfbb 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -8,7 +8,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/ns87415.c b/drivers/ide/pci/ns87415.c
index 17685f0ade13..a482ade8e455 100644
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -11,7 +11,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/pci/opti621.c
index e913da479808..fefac2c174b6 100644
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/pci/opti621.c
@@ -85,7 +85,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 
 #include <asm/io.h>
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 7ecfcd06f47e..73bd264fbf9f 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -19,7 +19,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 5d4436f3efd4..8f0acb956c6b 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -13,7 +13,6 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/blkdev.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 30cfc815fe31..13136dddb2b4 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -48,7 +48,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/rz1000.c b/drivers/ide/pci/rz1000.c
index 8d11ee838a2a..c117a068761b 100644
--- a/drivers/ide/pci/rz1000.c
+++ b/drivers/ide/pci/rz1000.c
@@ -16,7 +16,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 #include <linux/init.h>
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 37326d2205b8..bdc1fed41260 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 192a6a70a631..e92a874b31df 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -26,7 +26,6 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index ded6a13fd406..5f79d284ff82 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -32,7 +32,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 681306c9d79b..1017fb4f6317 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -22,7 +22,6 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
-#include <linux/hdreg.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 83c36e6035fa..874c8ca40ed6 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -39,7 +39,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 #include <linux/io.h>
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 5efe21d6ef97..56bfb245f1fa 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -47,7 +47,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/ide.h>
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 73905bcc08fb..61a006cb4746 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -17,7 +17,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 866d6c65e3a0..a31c6911442d 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/init.h>
 
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index b77ec35151b3..c980a7f39052 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -28,7 +28,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 #include <linux/init.h>
diff --git a/drivers/ide/pci/trm290.c b/drivers/ide/pci/trm290.c
index fd28b49977fd..4dfbc6a68b5b 100644
--- a/drivers/ide/pci/trm290.c
+++ b/drivers/ide/pci/trm290.c
@@ -135,7 +135,6 @@
 #include <linux/interrupt.h>
 #include <linux/blkdev.h>
 #include <linux/init.h>
-#include <linux/hdreg.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 6a661a4454ee..d9a2cc09f5c6 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -40,7 +40,6 @@
 #include <linux/ioport.h>
 #include <linux/blkdev.h>
 #include <linux/errno.h>
-#include <linux/hdreg.h>
 #include <linux/slab.h>
 #include <linux/ide.h>
 #include <linux/scatterlist.h>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 1d9716a95dc4..a7f980d2fe5b 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -8,7 +8,7 @@
 
 #include <linux/init.h>
 #include <linux/ioport.h>
-#include <linux/hdreg.h>
+#include <linux/ata.h>
 #include <linux/blkdev.h>
 #include <linux/proc_fs.h>
 #include <linux/interrupt.h>
-- 
cgit v1.2.3


From 1e874f448365b80e69b8a60b8b575b17f00811f3 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:27 +0200
Subject: ide: call ide_proc_register_driver() later

Call ide_proc_register_driver() in ide*_setup() (just before
ide*_add_settings() call) instead of in ->probe method.

Despite being basically a preparation for /proc/ide/hd*/settings
rework this is a nice cleanup in itself.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-cd.c     | 5 ++---
 drivers/ide/ide-disk.c   | 4 ++--
 drivers/ide/ide-floppy.c | 4 ++--
 drivers/ide/ide-tape.c   | 3 +--
 drivers/scsi/ide-scsi.c  | 2 +-
 5 files changed, 8 insertions(+), 10 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 607af5de16f8..34a1aeaa15dd 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1924,6 +1924,8 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 		cd->devinfo.handle = NULL;
 		return 1;
 	}
+
+	ide_proc_register_driver(drive, cd->driver);
 	ide_cdrom_add_settings(drive);
 	return 0;
 }
@@ -2134,8 +2136,6 @@ static int ide_cd_probe(ide_drive_t *drive)
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &ide_cdrom_driver);
-
 	kref_init(&info->kref);
 
 	info->drive = drive;
@@ -2150,7 +2150,6 @@ static int ide_cd_probe(ide_drive_t *drive)
 	g->driverfs_dev = &drive->gendev;
 	g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
 	if (ide_cdrom_setup(drive)) {
-		ide_proc_unregister_driver(drive, &ide_cdrom_driver);
 		ide_cd_release(&info->kref);
 		goto failed;
 	}
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 6e1a25e61df5..5fc4213437a5 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -782,11 +782,13 @@ static inline void idedisk_add_settings(ide_drive_t *drive) { ; }
 
 static void idedisk_setup(ide_drive_t *drive)
 {
+	struct ide_disk_obj *idkp = drive->driver_data;
 	ide_hwif_t *hwif = drive->hwif;
 	u16 *id = drive->id;
 	char *m = (char *)&id[ATA_ID_PROD];
 	unsigned long long capacity;
 
+	ide_proc_register_driver(drive, idkp->driver);
 	idedisk_add_settings(drive);
 
 	if (drive->id_read == 0)
@@ -1151,8 +1153,6 @@ static int ide_disk_probe(ide_drive_t *drive)
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &idedisk_driver);
-
 	kref_init(&idkp->kref);
 
 	idkp->drive = drive;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index b0f4d8459a9d..597459c81d5f 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1061,6 +1061,8 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	}
 
 	(void) ide_floppy_get_capacity(drive);
+
+	ide_proc_register_driver(drive, floppy->driver);
 	idefloppy_add_settings(drive);
 }
 
@@ -1413,8 +1415,6 @@ static int ide_floppy_probe(ide_drive_t *drive)
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &idefloppy_driver);
-
 	kref_init(&floppy->kref);
 
 	floppy->drive = drive;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 874e60fc85d1..f41983e4a4e4 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2514,6 +2514,7 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)
 		tape->best_dsc_rw_freq * 1000 / HZ,
 		drive->using_dma ? ", DMA":"");
 
+	ide_proc_register_driver(drive, tape->driver);
 	idetape_add_settings(drive);
 }
 
@@ -2669,8 +2670,6 @@ static int ide_tape_probe(ide_drive_t *drive)
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &idetape_driver);
-
 	kref_init(&tape->kref);
 
 	tape->drive = drive;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index d9a2cc09f5c6..02bd5c487d1f 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -460,6 +460,7 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
 
 	drive->pc_callback = ide_scsi_callback;
 
+	ide_proc_register_driver(drive, scsi->driver);
 	idescsi_add_settings(drive);
 }
 
@@ -851,7 +852,6 @@ static int ide_scsi_probe(ide_drive_t *drive)
 	idescsi->host = host;
 	idescsi->disk = g;
 	g->private_data = &idescsi->driver;
-	ide_proc_register_driver(drive, &idescsi_driver);
 	err = 0;
 	idescsi_setup(drive, idescsi);
 	g->fops = &idescsi_ops;
-- 
cgit v1.2.3


From 263138a0ad6e38de7f6526b7de037ed4511308ef Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:27 +0200
Subject: ide: preparations for /proc/ide/hd*/settings rework

After rework settings will be no longer created dynamically
for each device so we need to make some fixups first.

* Use set_[ksettings,unmaskirq]() as a set function for
  ["keepsettings","unmaskirq"] setting.

* Allow writes to ["io_32bit","unmaskirq"] settings also when
  drive->no_[io_32bit,unmask] is set (this is checked later inside
  set_[io_32bit,unmaskirq]() anywyay and keeps consistency with
  the corresponding HDIO_SET_[32BIT,UNMASKINTR] ioctls).

* Use max possible multi sectors value (16) as an allowed max for
  "multcount" setting.  set_multcount() set function checks against
  device's max possbile value anyway and it makes the proc setting
  consistent with the corresponding HDIO_SET_MULTCOUNT ioctl.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 3 +--
 drivers/ide/ide-proc.c | 6 +++---
 drivers/ide/ide.c      | 4 ++--
 include/linux/ide.h    | 2 ++
 4 files changed, 8 insertions(+), 7 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 5fc4213437a5..7a15907dce1d 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -760,8 +760,7 @@ static void idedisk_add_settings(ide_drive_t *drive)
 			&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,
-			drive->id[ATA_ID_MAX_MULTSECT] & 0xff, 1, 1,
+	ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, 16, 1, 1,
 			&drive->mult_count, set_multcount);
 	ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
 			&drive->nowerr, set_nowerr);
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index cbe5a7efbbad..7a64aedfa648 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -368,11 +368,11 @@ void ide_add_generic_settings (ide_drive_t *drive)
 /*
  *			  drive		setting name		read/write access				data type	min	max				mul_factor	div_factor	data pointer			set function
  */
-	__ide_add_setting(drive,	"io_32bit",		drive->no_io_32bit ? SETTING_READ : SETTING_RW,	TYPE_BYTE,	0,	1 + (SUPPORT_VLB_SYNC << 1),	1,		1,		&drive->io_32bit,		set_io_32bit,	0);
-	__ide_add_setting(drive,	"keepsettings",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->keep_settings,		NULL,		0);
+	__ide_add_setting(drive,	"io_32bit",		SETTING_RW,					TYPE_BYTE,	0,	1 + (SUPPORT_VLB_SYNC << 1),	1,		1,		&drive->io_32bit,		set_io_32bit,	0);
+	__ide_add_setting(drive,	"keepsettings",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->keep_settings,		set_ksettings,	0);
 	__ide_add_setting(drive,	"nice1",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->nice1,			NULL,		0);
 	__ide_add_setting(drive,	"pio_mode",		SETTING_WRITE,					TYPE_BYTE,	0,	255,				1,		1,		NULL,				set_pio_mode,	0);
-	__ide_add_setting(drive,	"unmaskirq",		drive->no_unmask ? SETTING_READ : SETTING_RW,	TYPE_BYTE,	0,	1,				1,		1,		&drive->unmask,			NULL,		0);
+	__ide_add_setting(drive,	"unmaskirq",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->unmask,			set_unmaskirq,	0);
 	__ide_add_setting(drive,	"using_dma",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->using_dma,		set_using_dma,	0);
 	__ide_add_setting(drive,	"init_speed",		SETTING_RW,					TYPE_BYTE,	0,	70,				1,		1,		&drive->init_speed,		NULL,		0);
 	__ide_add_setting(drive,	"current_speed",	SETTING_RW,					TYPE_BYTE,	0,	70,				1,		1,		&drive->current_speed,		set_xfer_rate,	0);
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 080314e3d6b7..8e0c9f27ae4a 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -305,7 +305,7 @@ int set_io_32bit(ide_drive_t *drive, int arg)
 	return 0;
 }
 
-static int set_ksettings(ide_drive_t *drive, int arg)
+int set_ksettings(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
@@ -394,7 +394,7 @@ int set_pio_mode(ide_drive_t *drive, int arg)
 	return 0;
 }
 
-static int set_unmaskirq(ide_drive_t *drive, int arg)
+int set_unmaskirq(ide_drive_t *drive, int arg)
 {
 	if (drive->no_unmask)
 		return -EPERM;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a7f980d2fe5b..ad09e7c81ae9 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -688,7 +688,9 @@ typedef struct ide_driver_s ide_driver_t;
 extern struct mutex ide_setting_mtx;
 
 int set_io_32bit(ide_drive_t *, int);
+int set_ksettings(ide_drive_t *, int);
 int set_pio_mode(ide_drive_t *, int);
+int set_unmaskirq(ide_drive_t *, int);
 int set_using_dma(ide_drive_t *, int);
 
 /* ATAPI packet command flags */
-- 
cgit v1.2.3


From 8185d5aa93e0a5c111adc4952a5b87193a68ae5b Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:28 +0200
Subject: ide: /proc/ide/hd*/settings rework

* Add struct ide_devset, S_* flags, *DEVSET() & ide*_devset_*() macros.

* Add 'const struct ide_devset **settings' to ide_driver_t.

* Use 'const struct ide_devset **settings' in ide_drive_t instead of
  'struct ide_settings_s *settings'.  Then convert core code and device
  drivers to use struct ide_devset and co.:

  - device settings are no longer allocated dynamically for each device
    but instead there is an unique struct ide_devset instance per setting

  - device driver keeps the pointer to the table of pointers to its
    settings in ide_driver_t.settings

  - generic settings are kept in ide_generic_setting[]

  - ide_proc_[un]register_driver(), ide_find_setting_by_name(),
    ide_{read,write}_setting() and proc_ide_{read,write}_settings()
    are updated accordingly

  - ide*_add_settings() are removed

* Remove no longer used __ide_add_setting(), ide_add_setting(),
  __ide_remove_setting() and auto_remove_settings().

* Remove no longer used TYPE_*, SETTING_*, ide_procset_t
  and ide_settings_t.

* ->keep_settings, ->using_dma, ->unmask, ->noflush, ->dsc_overlap,
  ->nice1, ->addressing, ->wcache and ->nowerr ide_drive_t fields
  can now be bitfield flags.

While at it:

* Rename ide_find_setting_by_name() to ide_find_setting().

* Rename write_wcache() to set_wcache().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-cd.c     |  15 ++-
 drivers/ide/ide-disk.c   |  87 ++++++++-------
 drivers/ide/ide-floppy.c |  35 ++++--
 drivers/ide/ide-probe.c  |   2 -
 drivers/ide/ide-proc.c   | 279 +++++++++++++++--------------------------------
 drivers/ide/ide-tape.c   |  74 +++++++++----
 drivers/ide/ide.c        |  21 ++--
 drivers/scsi/ide-scsi.c  |  52 ++++++---
 include/linux/ide.h      | 110 +++++++++++++------
 9 files changed, 340 insertions(+), 335 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 34a1aeaa15dd..1f5652326489 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1809,13 +1809,12 @@ static ide_proc_entry_t idecd_proc[] = {
 	{ NULL, 0, NULL, NULL }
 };
 
-static void ide_cdrom_add_settings(ide_drive_t *drive)
-{
-	ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
-			&drive->dsc_overlap, NULL);
-}
-#else
-static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
+ide_devset_rw(dsc_overlap, 0, 1, dsc_overlap);
+
+static const struct ide_devset *idecd_settings[] = {
+	&ide_devset_dsc_overlap,
+	NULL
+};
 #endif
 
 static const struct cd_list_entry ide_cd_quirks_list[] = {
@@ -1926,7 +1925,6 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 	}
 
 	ide_proc_register_driver(drive, cd->driver);
-	ide_cdrom_add_settings(drive);
 	return 0;
 }
 
@@ -1977,6 +1975,7 @@ static ide_driver_t ide_cdrom_driver = {
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idecd_proc,
+	.settings		= idecd_settings,
 #endif
 };
 
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 7a15907dce1d..2e43ae15fb1b 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -599,6 +599,8 @@ 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.
@@ -625,6 +627,8 @@ static int set_multcount(ide_drive_t *drive, int arg)
 	return (drive->mult_count == arg) ? 0 : -EIO;
 }
 
+ide_devset_get(nowerr, nowerr);
+
 static int set_nowerr(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 1)
@@ -673,7 +677,9 @@ 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(wcache, wcache);
+
+static int set_wcache(ide_drive_t *drive, int arg)
 {
 	ide_task_t args;
 	int err = 1;
@@ -710,6 +716,8 @@ static int do_idedisk_flushcache(ide_drive_t *drive)
 	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;
@@ -727,6 +735,8 @@ static int set_acoustic(ide_drive_t *drive, int arg)
 	return 0;
 }
 
+ide_devset_get(lba_addressing, addressing);
+
 /*
  * drive->addressing:
  *	0: 28-bit
@@ -750,33 +760,33 @@ static int set_lba_addressing(ide_drive_t *drive, int arg)
 }
 
 #ifdef CONFIG_IDE_PROC_FS
-static void idedisk_add_settings(ide_drive_t *drive)
-{
-	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, 16, 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) { ; }
+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
 
 static void idedisk_setup(ide_drive_t *drive)
@@ -788,7 +798,6 @@ static void idedisk_setup(ide_drive_t *drive)
 	unsigned long long capacity;
 
 	ide_proc_register_driver(drive, idkp->driver);
-	idedisk_add_settings(drive);
 
 	if (drive->id_read == 0)
 		return;
@@ -880,7 +889,7 @@ static void idedisk_setup(ide_drive_t *drive)
 	if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
 		drive->wcache = 1;
 
-	write_cache(drive, 1);
+	set_wcache(drive, 1);
 }
 
 static void ide_cacheflush_p(ide_drive_t *drive)
@@ -976,6 +985,7 @@ static ide_driver_t idedisk_driver = {
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idedisk_proc,
+	.settings		= idedisk_settings,
 #endif
 };
 
@@ -1056,19 +1066,18 @@ static int idedisk_ioctl(struct inode *inode, struct file *file,
 	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;
+	int err, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
 
 	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_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 = write_cache;		goto set_val;
+	case HDIO_SET_WCACHE:	 setfunc = set_wcache;		goto set_val;
 	case HDIO_SET_ACOUSTIC:	 setfunc = set_acoustic;	goto set_val;
 	}
 
@@ -1077,7 +1086,7 @@ static int idedisk_ioctl(struct inode *inode, struct file *file,
 read_val:
 	mutex_lock(&ide_setting_mtx);
 	spin_lock_irqsave(&ide_lock, flags);
-	err = *val;
+	err = getfunc(drive);
 	spin_unlock_irqrestore(&ide_lock, flags);
 	mutex_unlock(&ide_setting_mtx);
 	return err >= 0 ? put_user(err, (long __user *)arg) : err;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 597459c81d5f..673644fdb6f2 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1007,21 +1007,32 @@ static int idefloppy_identify_device(ide_drive_t *drive, u16 *id)
 }
 
 #ifdef CONFIG_IDE_PROC_FS
-static void idefloppy_add_settings(ide_drive_t *drive)
+ide_devset_rw(bios_cyl,  0, 1023, bios_cyl);
+ide_devset_rw(bios_head, 0,  255, bios_head);
+ide_devset_rw(bios_sect, 0,   63, bios_sect);
+
+static int get_ticks(ide_drive_t *drive)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
+	return floppy->ticks;
+}
 
-	ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 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, "ticks",	   SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
-			&floppy->ticks,	 NULL);
+static int set_ticks(ide_drive_t *drive, int arg)
+{
+	idefloppy_floppy_t *floppy = drive->driver_data;
+	floppy->ticks = arg;
+	return 0;
 }
-#else
-static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
+
+IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks);
+
+static const struct ide_devset *idefloppy_settings[] = {
+	&ide_devset_bios_cyl,
+	&ide_devset_bios_head,
+	&ide_devset_bios_sect,
+	&ide_devset_ticks,
+	NULL
+};
 #endif
 
 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
@@ -1063,7 +1074,6 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	(void) ide_floppy_get_capacity(drive);
 
 	ide_proc_register_driver(drive, floppy->driver);
-	idefloppy_add_settings(drive);
 }
 
 static void ide_floppy_remove(ide_drive_t *drive)
@@ -1126,6 +1136,7 @@ static ide_driver_t idefloppy_driver = {
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idefloppy_proc,
+	.settings		= idefloppy_settings,
 #endif
 };
 
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 9926e12783bb..62f7e1ef10c1 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1332,8 +1332,6 @@ static void hwif_register_devices(ide_hwif_t *hwif)
 		if (!drive->present)
 			continue;
 
-		ide_add_generic_settings(drive);
-
 		snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i);
 		dev->parent = &hwif->gendev;
 		dev->bus = &ide_bus_type;
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 7a64aedfa648..5634b3971d21 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -114,140 +114,24 @@ static int proc_ide_read_identify
 }
 
 /**
- *	__ide_add_setting	-	add an ide setting option
- *	@drive: drive to use
+ *	ide_find_setting	-	find a specific setting
+ *	@st: setting table pointer
  *	@name: setting name
- *	@rw: true if the function is read write
- *	@data_type: type of data
- *	@min: range minimum
- *	@max: range maximum
- *	@mul_factor: multiplication scale
- *	@div_factor: divison scale
- *	@data: private data field
- *	@set: setting
- *	@auto_remove: setting auto removal flag
  *
- *	Removes the setting named from the device if it is present.
- *	The function takes the settings_lock to protect against
- *	parallel changes. This function must not be called from IRQ
- *	context. Returns 0 on success or -1 on failure.
- *
- *	BUGS: This code is seriously over-engineered. There is also
- *	magic about how the driver specific features are setup. If
- *	a driver is attached we assume the driver settings are auto
- *	remove.
- */
-
-static int __ide_add_setting(ide_drive_t *drive, const char *name, int rw, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set, int auto_remove)
-{
-	ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
-
-	mutex_lock(&ide_setting_mtx);
-	while ((*p) && strcmp((*p)->name, name) < 0)
-		p = &((*p)->next);
-	if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL)
-		goto abort;
-	if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL)
-		goto abort;
-	strcpy(setting->name, name);
-	setting->rw = rw;
-	setting->data_type = data_type;
-	setting->min = min;
-	setting->max = max;
-	setting->mul_factor = mul_factor;
-	setting->div_factor = div_factor;
-	setting->data = data;
-	setting->set = set;
-
-	setting->next = *p;
-	if (auto_remove)
-		setting->auto_remove = 1;
-	*p = setting;
-	mutex_unlock(&ide_setting_mtx);
-	return 0;
-abort:
-	mutex_unlock(&ide_setting_mtx);
-	kfree(setting);
-	return -1;
-}
-
-int ide_add_setting(ide_drive_t *drive, const char *name, int rw, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set)
-{
-	return __ide_add_setting(drive, name, rw, data_type, min, max, mul_factor, div_factor, data, set, 1);
-}
-
-EXPORT_SYMBOL(ide_add_setting);
-
-/**
- *	__ide_remove_setting	-	remove an ide setting option
- *	@drive: drive to use
- *	@name: setting name
- *
- *	Removes the setting named from the device if it is present.
- *	The caller must hold the setting semaphore.
- */
-
-static void __ide_remove_setting(ide_drive_t *drive, char *name)
-{
-	ide_settings_t **p, *setting;
-
-	p = (ide_settings_t **) &drive->settings;
-
-	while ((*p) && strcmp((*p)->name, name))
-		p = &((*p)->next);
-	setting = (*p);
-	if (setting == NULL)
-		return;
-
-	(*p) = setting->next;
-
-	kfree(setting->name);
-	kfree(setting);
-}
-
-/**
- *	auto_remove_settings	-	remove driver specific settings
- *	@drive: drive
- *
- *	Automatically remove all the driver specific settings for this
- *	drive. This function may not be called from IRQ context. The
- *	caller must hold ide_setting_mtx.
- */
-
-static void auto_remove_settings(ide_drive_t *drive)
-{
-	ide_settings_t *setting;
-repeat:
-	setting = drive->settings;
-	while (setting) {
-		if (setting->auto_remove) {
-			__ide_remove_setting(drive, setting->name);
-			goto repeat;
-		}
-		setting = setting->next;
-	}
-}
-
-/**
- *	ide_find_setting_by_name	-	find a drive specific setting
- *	@drive: drive to scan
- *	@name: setting name
- *
- *	Scan's the device setting table for a matching entry and returns
+ *	Scan's the setting table for a matching entry and returns
  *	this or NULL if no entry is found. The caller must hold the
  *	setting semaphore
  */
 
-static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name)
+static const struct ide_devset *ide_find_setting(const struct ide_devset **st,
+						 char *name)
 {
-	ide_settings_t *setting = drive->settings;
-
-	while (setting) {
-		if (strcmp(setting->name, name) == 0)
+	while (*st) {
+		if (strcmp((*st)->name, name) == 0)
 			break;
-		setting = setting->next;
+		st++;
 	}
-	return setting;
+	return *st;
 }
 
 /**
@@ -263,26 +147,19 @@ static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name)
  *	be told apart
  */
 
-static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting)
+static int ide_read_setting(ide_drive_t *drive,
+			    const struct ide_devset *setting)
 {
-	int		val = -EINVAL;
-	unsigned long	flags;
+	int val = -EINVAL;
+
+	if ((setting->flags & S_READ)) {
+		unsigned long flags;
 
-	if ((setting->rw & SETTING_READ)) {
 		spin_lock_irqsave(&ide_lock, flags);
-		switch (setting->data_type) {
-		case TYPE_BYTE:
-			val = *((u8 *) setting->data);
-			break;
-		case TYPE_SHORT:
-			val = *((u16 *) setting->data);
-			break;
-		case TYPE_INT:
-			val = *((u32 *) setting->data);
-			break;
-		}
+		val = setting->get(drive);
 		spin_unlock_irqrestore(&ide_lock, flags);
 	}
+
 	return val;
 }
 
@@ -304,33 +181,26 @@ static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting)
  *	The current scheme of polling is kludgy, though safe enough.
  */
 
-static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val)
+static int ide_write_setting(ide_drive_t *drive,
+			     const struct ide_devset *setting, int val)
 {
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
-	if (setting->set)
+	if (setting->set && (setting->flags & S_NOLOCK))
 		return setting->set(drive, val);
-	if (!(setting->rw & SETTING_WRITE))
+	if (!(setting->flags & S_WRITE))
 		return -EPERM;
 	if (val < setting->min || val > setting->max)
 		return -EINVAL;
 	if (ide_spin_wait_hwgroup(drive))
 		return -EBUSY;
-	switch (setting->data_type) {
-	case TYPE_BYTE:
-		*((u8 *) setting->data) = val;
-		break;
-	case TYPE_SHORT:
-		*((u16 *) setting->data) = val;
-		break;
-	case TYPE_INT:
-		*((u32 *) setting->data) = val;
-		break;
-	}
+	setting->set(drive, val);
 	spin_unlock_irq(&ide_lock);
 	return 0;
 }
 
+static ide_devset_get(xfer_rate, current_speed);
+
 static int set_xfer_rate (ide_drive_t *drive, int arg)
 {
 	ide_task_t task;
@@ -355,29 +225,30 @@ static int set_xfer_rate (ide_drive_t *drive, int arg)
 	return err;
 }
 
-/**
- *	ide_add_generic_settings	-	generic ide settings
- *	@drive: drive being configured
- *
- *	Add the generic parts of the system settings to the /proc files.
- *	The caller must not be holding the ide_setting_mtx.
- */
-
-void ide_add_generic_settings (ide_drive_t *drive)
-{
-/*
- *			  drive		setting name		read/write access				data type	min	max				mul_factor	div_factor	data pointer			set function
- */
-	__ide_add_setting(drive,	"io_32bit",		SETTING_RW,					TYPE_BYTE,	0,	1 + (SUPPORT_VLB_SYNC << 1),	1,		1,		&drive->io_32bit,		set_io_32bit,	0);
-	__ide_add_setting(drive,	"keepsettings",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->keep_settings,		set_ksettings,	0);
-	__ide_add_setting(drive,	"nice1",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->nice1,			NULL,		0);
-	__ide_add_setting(drive,	"pio_mode",		SETTING_WRITE,					TYPE_BYTE,	0,	255,				1,		1,		NULL,				set_pio_mode,	0);
-	__ide_add_setting(drive,	"unmaskirq",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->unmask,			set_unmaskirq,	0);
-	__ide_add_setting(drive,	"using_dma",		SETTING_RW,					TYPE_BYTE,	0,	1,				1,		1,		&drive->using_dma,		set_using_dma,	0);
-	__ide_add_setting(drive,	"init_speed",		SETTING_RW,					TYPE_BYTE,	0,	70,				1,		1,		&drive->init_speed,		NULL,		0);
-	__ide_add_setting(drive,	"current_speed",	SETTING_RW,					TYPE_BYTE,	0,	70,				1,		1,		&drive->current_speed,		set_xfer_rate,	0);
-	__ide_add_setting(drive,	"number",		SETTING_RW,					TYPE_BYTE,	0,	3,				1,		1,		&drive->dn,			NULL,		0);
-}
+ide_devset_rw_nolock(current_speed, 0, 70, xfer_rate);
+ide_devset_rw_nolock(io_32bit, 0, 1 + (SUPPORT_VLB_SYNC << 1), io_32bit);
+ide_devset_rw_nolock(keepsettings, 0, 1, ksettings);
+ide_devset_rw_nolock(unmaskirq, 0, 1, unmaskirq);
+ide_devset_rw_nolock(using_dma, 0, 1, using_dma);
+
+ide_devset_w_nolock(pio_mode, 0, 255, pio_mode);
+
+ide_devset_rw(init_speed, 0, 70, init_speed);
+ide_devset_rw(nice1, 0, 1, nice1);
+ide_devset_rw(number, 0, 3, dn);
+
+static const struct ide_devset *ide_generic_settings[] = {
+	&ide_devset_current_speed,
+	&ide_devset_init_speed,
+	&ide_devset_io_32bit,
+	&ide_devset_keepsettings,
+	&ide_devset_nice1,
+	&ide_devset_number,
+	&ide_devset_pio_mode,
+	&ide_devset_unmaskirq,
+	&ide_devset_using_dma,
+	NULL
+};
 
 static void proc_ide_settings_warn(void)
 {
@@ -394,19 +265,31 @@ static void proc_ide_settings_warn(void)
 static int proc_ide_read_settings
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
+	const struct ide_devset *setting, **g, **d;
 	ide_drive_t	*drive = (ide_drive_t *) data;
-	ide_settings_t	*setting = (ide_settings_t *) drive->settings;
 	char		*out = page;
 	int		len, rc, mul_factor, div_factor;
 
 	proc_ide_settings_warn();
 
 	mutex_lock(&ide_setting_mtx);
+	g = ide_generic_settings;
+	d = drive->settings;
 	out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
 	out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
-	while (setting) {
-		mul_factor = setting->mul_factor;
-		div_factor = setting->div_factor;
+	while (*g || (d && *d)) {
+		/* read settings in the alphabetical order */
+		if (*g && d && *d) {
+			if (strcmp((*d)->name, (*g)->name) < 0)
+				setting = *d++;
+			else
+				setting = *g++;
+		} else if (d && *d) {
+			setting = *d++;
+		} else
+			setting = *g++;
+		mul_factor = setting->mulf ? setting->mulf(drive) : 1;
+		div_factor = setting->divf ? setting->divf(drive) : 1;
 		out += sprintf(out, "%-24s", setting->name);
 		rc = ide_read_setting(drive, setting);
 		if (rc >= 0)
@@ -414,12 +297,11 @@ static int proc_ide_read_settings
 		else
 			out += sprintf(out, "%-16s", "write-only");
 		out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
-		if (setting->rw & SETTING_READ)
+		if (setting->flags & S_READ)
 			out += sprintf(out, "r");
-		if (setting->rw & SETTING_WRITE)
+		if (setting->flags & S_WRITE)
 			out += sprintf(out, "w");
 		out += sprintf(out, "\n");
-		setting = setting->next;
 	}
 	len = out - page;
 	mutex_unlock(&ide_setting_mtx);
@@ -433,9 +315,10 @@ static int proc_ide_write_settings(struct file *file, const char __user *buffer,
 {
 	ide_drive_t	*drive = (ide_drive_t *) data;
 	char		name[MAX_LEN + 1];
-	int		for_real = 0;
+	int		for_real = 0, mul_factor, div_factor;
 	unsigned long	n;
-	ide_settings_t	*setting;
+
+	const struct ide_devset *setting;
 	char *buf, *s;
 
 	if (!capable(CAP_SYS_ADMIN))
@@ -503,13 +386,21 @@ static int proc_ide_write_settings(struct file *file, const char __user *buffer,
 			}
 
 			mutex_lock(&ide_setting_mtx);
-			setting = ide_find_setting_by_name(drive, name);
+			/* generic settings first, then driver specific ones */
+			setting = ide_find_setting(ide_generic_settings, name);
 			if (!setting) {
-				mutex_unlock(&ide_setting_mtx);
-				goto parse_error;
+				if (drive->settings)
+					setting = ide_find_setting(drive->settings, name);
+				if (!setting) {
+					mutex_unlock(&ide_setting_mtx);
+					goto parse_error;
+				}
+			}
+			if (for_real) {
+				mul_factor = setting->mulf ? setting->mulf(drive) : 1;
+				div_factor = setting->divf ? setting->divf(drive) : 1;
+				ide_write_setting(drive, setting, val * div_factor / mul_factor);
 			}
-			if (for_real)
-				ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
 			mutex_unlock(&ide_setting_mtx);
 		}
 	} while (!for_real++);
@@ -680,6 +571,10 @@ static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t
 
 void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver)
 {
+	mutex_lock(&ide_setting_mtx);
+	drive->settings = driver->settings;
+	mutex_unlock(&ide_setting_mtx);
+
 	ide_add_proc_entries(drive->proc, driver->proc, drive);
 }
 
@@ -716,7 +611,7 @@ void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver)
 	 * OTOH both ide_{read,write}_setting are only ever used under
 	 * ide_setting_mtx.
 	 */
-	auto_remove_settings(drive);
+	drive->settings = NULL;
 	spin_unlock_irqrestore(&ide_lock, flags);
 	mutex_unlock(&ide_setting_mtx);
 }
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index f41983e4a4e4..7037accb0589 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2410,28 +2410,56 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive)
 }
 
 #ifdef CONFIG_IDE_PROC_FS
-static void idetape_add_settings(ide_drive_t *drive)
-{
-	idetape_tape_t *tape = drive->driver_data;
-
-	ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff,
-			1, 2, (u16 *)&tape->caps[16], NULL);
-	ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff,
-			1, 1, (u16 *)&tape->caps[14], NULL);
-	ide_add_setting(drive, "buffer_size", SETTING_READ, TYPE_INT, 0, 0xffff,
-			1, 1024, &tape->buffer_size, NULL);
-	ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN,
-			IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_freq,
-			NULL);
-	ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1,
-			1, &drive->dsc_overlap, NULL);
-	ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff,
-			1, 1, &tape->avg_speed, NULL);
-	ide_add_setting(drive, "debug_mask", SETTING_RW, TYPE_INT, 0, 0xffff, 1,
-			1, &tape->debug_mask, NULL);
-}
-#else
-static inline void idetape_add_settings(ide_drive_t *drive) { ; }
+#define ide_tape_devset_get(name, field) \
+static int get_##name(ide_drive_t *drive) \
+{ \
+	idetape_tape_t *tape = drive->driver_data; \
+	return tape->field; \
+}
+
+#define ide_tape_devset_set(name, field) \
+static int set_##name(ide_drive_t *drive, int arg) \
+{ \
+	idetape_tape_t *tape = drive->driver_data; \
+	tape->field = arg; \
+	return 0; \
+}
+
+#define ide_tape_devset_rw(_name, _min, _max, _field, _mulf, _divf) \
+ide_tape_devset_get(_name, _field) \
+ide_tape_devset_set(_name, _field) \
+__IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name, _mulf, _divf)
+
+#define ide_tape_devset_r(_name, _min, _max, _field, _mulf, _divf) \
+ide_tape_devset_get(_name, _field) \
+__IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL, _mulf, _divf)
+
+static int mulf_tdsc(ide_drive_t *drive)	{ return 1000; }
+static int divf_tdsc(ide_drive_t *drive)	{ return   HZ; }
+static int divf_buffer(ide_drive_t *drive)	{ return    2; }
+static int divf_buffer_size(ide_drive_t *drive)	{ return 1024; }
+
+ide_devset_rw(dsc_overlap,	0,	1, dsc_overlap);
+
+ide_tape_devset_rw(debug_mask,	0, 0xffff, debug_mask,  NULL, NULL);
+ide_tape_devset_rw(tdsc, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX,
+		   best_dsc_rw_freq, mulf_tdsc, divf_tdsc);
+
+ide_tape_devset_r(avg_speed,	0, 0xffff, avg_speed,   NULL, NULL);
+ide_tape_devset_r(speed,	0, 0xffff, caps[14],    NULL, NULL);
+ide_tape_devset_r(buffer,	0, 0xffff, caps[16],    NULL, divf_buffer);
+ide_tape_devset_r(buffer_size,	0, 0xffff, buffer_size, NULL, divf_buffer_size);
+
+static const struct ide_devset *idetape_settings[] = {
+	&ide_devset_avg_speed,
+	&ide_devset_buffer,
+	&ide_devset_buffer_size,
+	&ide_devset_debug_mask,
+	&ide_devset_dsc_overlap,
+	&ide_devset_speed,
+	&ide_devset_tdsc,
+	NULL
+};
 #endif
 
 /*
@@ -2515,7 +2543,6 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)
 		drive->using_dma ? ", DMA":"");
 
 	ide_proc_register_driver(drive, tape->driver);
-	idetape_add_settings(drive);
 }
 
 static void ide_tape_remove(ide_drive_t *drive)
@@ -2586,6 +2613,7 @@ static ide_driver_t idetape_driver = {
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idetape_proc,
+	.settings		= idetape_settings,
 #endif
 };
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 8e0c9f27ae4a..eb64e942f58b 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -287,6 +287,8 @@ int ide_spin_wait_hwgroup (ide_drive_t *drive)
 
 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
 
+ide_devset_get(io_32bit, io_32bit);
+
 int set_io_32bit(ide_drive_t *drive, int arg)
 {
 	if (drive->no_io_32bit)
@@ -305,6 +307,8 @@ int set_io_32bit(ide_drive_t *drive, int arg)
 	return 0;
 }
 
+ide_devset_get(ksettings, keep_settings);
+
 int set_ksettings(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 1)
@@ -318,6 +322,8 @@ int set_ksettings(ide_drive_t *drive, int arg)
 	return 0;
 }
 
+ide_devset_get(using_dma, using_dma);
+
 int set_using_dma(ide_drive_t *drive, int arg)
 {
 #ifdef CONFIG_BLK_DEV_IDEDMA
@@ -394,6 +400,8 @@ int set_pio_mode(ide_drive_t *drive, int arg)
 	return 0;
 }
 
+ide_devset_get(unmaskirq, unmask);
+
 int set_unmaskirq(ide_drive_t *drive, int arg)
 {
 	if (drive->no_unmask)
@@ -555,14 +563,13 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 {
 	unsigned long flags;
 	ide_driver_t *drv;
-	int err = 0, (*setfunc)(ide_drive_t *, int);
-	u8 *val;
+	int err = 0, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
 
 	switch (cmd) {
-	case HDIO_GET_32BIT:	    val = &drive->io_32bit;	 goto read_val;
-	case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
-	case HDIO_GET_UNMASKINTR:   val = &drive->unmask;	 goto read_val;
-	case HDIO_GET_DMA:	    val = &drive->using_dma;	 goto read_val;
+	case HDIO_GET_32BIT:	    getfunc = get_io_32bit;	 goto read_val;
+	case HDIO_GET_KEEPSETTINGS: getfunc = get_ksettings;	 goto read_val;
+	case HDIO_GET_UNMASKINTR:   getfunc = get_unmaskirq;	 goto read_val;
+	case HDIO_GET_DMA:	    getfunc = get_using_dma;	 goto read_val;
 	case HDIO_SET_32BIT:	    setfunc = set_io_32bit;	 goto set_val;
 	case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings;	 goto set_val;
 	case HDIO_SET_PIO_MODE:	    setfunc = set_pio_mode;	 goto set_val;
@@ -638,7 +645,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 read_val:
 	mutex_lock(&ide_setting_mtx);
 	spin_lock_irqsave(&ide_lock, flags);
-	err = *val;
+	err = getfunc(drive);
 	spin_unlock_irqrestore(&ide_lock, flags);
 	mutex_unlock(&ide_setting_mtx);
 	return err >= 0 ? put_user(err, (long __user *)arg) : err;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 02bd5c487d1f..65cf84b222c5 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -429,21 +429,41 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r
 }
 
 #ifdef CONFIG_IDE_PROC_FS
-static void idescsi_add_settings(ide_drive_t *drive)
-{
-	idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-
-/*
- *			drive	setting name	read/write	data type	min	max	mul_factor	div_factor	data pointer		set function
- */
-	ide_add_setting(drive,	"bios_cyl",	SETTING_RW,	TYPE_INT,	0,	1023,	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,	"transform",	SETTING_RW,	TYPE_INT,	0,	3,	1,		1,		&scsi->transform,	NULL);
-	ide_add_setting(drive,	"log",		SETTING_RW,	TYPE_INT,	0,	1,	1,		1,		&scsi->log,		NULL);
-}
-#else
-static inline void idescsi_add_settings(ide_drive_t *drive) { ; }
+#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(_name, _min, _max, _field) \
+ide_scsi_devset_get(_name, _field); \
+ide_scsi_devset_set(_name, _field); \
+IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
+
+ide_devset_rw(bios_cyl,		0, 1023, bios_cyl);
+ide_devset_rw(bios_head,	0,  255, bios_head);
+ide_devset_rw(bios_sect,	0,   63, bios_sect);
+
+ide_scsi_devset_rw(transform,	0,    3, transform);
+ide_scsi_devset_rw(log,		0,    1, log);
+
+static const struct ide_devset *idescsi_settings[] = {
+	&ide_devset_bios_cyl,
+	&ide_devset_bios_head,
+	&ide_devset_bios_sect,
+	&ide_devset_log,
+	&ide_devset_transform,
+	NULL
+};
 #endif
 
 /*
@@ -461,7 +481,6 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
 	drive->pc_callback = ide_scsi_callback;
 
 	ide_proc_register_driver(drive, scsi->driver);
-	idescsi_add_settings(drive);
 }
 
 static void ide_scsi_remove(ide_drive_t *drive)
@@ -509,6 +528,7 @@ static ide_driver_t idescsi_driver = {
 	.error                  = idescsi_atapi_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idescsi_proc,
+	.settings		= idescsi_settings,
 #endif
 };
 
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ad09e7c81ae9..4667ec8aeebb 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -304,8 +304,8 @@ typedef enum {
 	ide_started,	/* a drive operation was started, handler was set */
 } ide_startstop_t;
 
+struct ide_devset;
 struct ide_driver_s;
-struct ide_settings_s;
 
 #ifdef CONFIG_BLK_DEV_IDEACPI
 struct ide_acpi_drive_link;
@@ -384,7 +384,7 @@ struct ide_drive_s {
 	u16			*id;	/* identification info */
 #ifdef CONFIG_IDE_PROC_FS
 	struct proc_dir_entry *proc;	/* /proc/ide/ directory entry */
-	struct ide_settings_s *settings;/* /proc/ide/ drive settings */
+	const struct ide_devset **settings; /* /proc/ide/ drive settings */
 #endif
 	struct hwif_s		*hwif;	/* actually (ide_hwif_t *) */
 
@@ -396,16 +396,16 @@ struct ide_drive_s {
 	special_t	special;	/* special action flags */
 	select_t	select;		/* basic drive/head select reg value */
 
-	u8	keep_settings;		/* restore settings after drive reset */
-	u8	using_dma;		/* disk is using dma for read/write */
 	u8	retry_pio;		/* retrying dma capable host in pio */
 	u8	state;			/* retry state */
 	u8	waiting_for_dma;	/* dma currently in progress */
-	u8	unmask;			/* okay to unmask other irqs */
-	u8	noflush;		/* don't attempt flushes */
-	u8	dsc_overlap;		/* DSC overlap */
-	u8	nice1;			/* give potential excess bandwidth */
 
+	unsigned keep_settings	: 1;	/* restore settings after drive reset */
+	unsigned using_dma	: 1;	/* disk is using dma for read/write */
+	unsigned unmask		: 1;	/* okay to unmask other irqs */
+	unsigned noflush	: 1;	/* don't attempt flushes */
+	unsigned dsc_overlap	: 1;	/* DSC overlap */
+	unsigned nice1		: 1;	/* give potential excess bandwidth */
 	unsigned present	: 1;	/* drive is physically present */
 	unsigned dead		: 1;	/* device ejected hint */
 	unsigned id_read	: 1;	/* 1=id read from disk 0 = synthetic */
@@ -423,14 +423,15 @@ struct ide_drive_s {
 	unsigned sleeping	: 1;	/* 1=sleeping & sleep field valid */
 	unsigned post_reset	: 1;
 	unsigned udma33_warned	: 1;
+	unsigned addressing	: 2;	/* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
+	unsigned wcache		: 1;	/* status of write cache */
+	unsigned nowerr		: 1;	/* used for ignoring ATA_DF */
 
-	u8	addressing;	/* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
         u8	quirk_list;	/* considered quirky, set for a specific host */
         u8	init_speed;	/* transfer rate set at boot */
         u8	current_speed;	/* current transfer rate set */
 	u8	desired_speed;	/* desired transfer rate set */
         u8	dn;		/* now wide spread use */
-        u8	wcache;		/* status of write cache */
 	u8	acoustic;	/* acoustic management */
 	u8	media;		/* disk, cdrom, tape, floppy, ... */
 	u8	ready_stat;	/* min status value for drive ready */
@@ -439,7 +440,6 @@ struct ide_drive_s {
 	u8	tune_req;	/* requested drive tuning setting */
 	u8	io_32bit;	/* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
 	u8	bad_wstat;	/* used for ignoring ATA_DF */
-	u8	nowerr;		/* used for ignoring ATA_DF */
 	u8	head;		/* "real" number of heads */
 	u8	sect;		/* "real" sectors per track */
 	u8	bios_head;	/* BIOS/fdisk/LILO number of heads */
@@ -687,12 +687,29 @@ typedef struct ide_driver_s ide_driver_t;
 
 extern struct mutex ide_setting_mtx;
 
+int get_io_32bit(ide_drive_t *);
 int set_io_32bit(ide_drive_t *, int);
+int get_ksettings(ide_drive_t *);
 int set_ksettings(ide_drive_t *, int);
 int set_pio_mode(ide_drive_t *, int);
+int get_unmaskirq(ide_drive_t *);
 int set_unmaskirq(ide_drive_t *, int);
+int get_using_dma(ide_drive_t *);
 int set_using_dma(ide_drive_t *, int);
 
+#define ide_devset_get(name, field) \
+int get_##name(ide_drive_t *drive) \
+{ \
+	return drive->field; \
+}
+
+#define ide_devset_set(name, field) \
+int set_##name(ide_drive_t *drive, int arg) \
+{ \
+	drive->field = arg; \
+	return 0; \
+}
+
 /* ATAPI packet command flags */
 enum {
 	/* set when an error is considered normal - no retry (ide-tape) */
@@ -757,30 +774,53 @@ struct ide_atapi_pc {
  * configurable drive settings
  */
 
-#define TYPE_INT	0
-#define TYPE_BYTE	1
-#define TYPE_SHORT	2
+#define S_READ		(1 << 0)
+#define S_WRITE		(1 << 1)
+#define S_RW		(S_READ | S_WRITE)
+#define S_NOLOCK	(1 << 2)
 
-#define SETTING_READ	(1 << 0)
-#define SETTING_WRITE	(1 << 1)
-#define SETTING_RW	(SETTING_READ | SETTING_WRITE)
+struct ide_devset {
+	const char	*name;
+	unsigned int	flags;
+	int		min, max;
+	int		(*get)(ide_drive_t *);
+	int		(*set)(ide_drive_t *, int);
+	int		(*mulf)(ide_drive_t *);
+	int		(*divf)(ide_drive_t *);
+};
 
-typedef int (ide_procset_t)(ide_drive_t *, int);
-typedef struct ide_settings_s {
-	char			*name;
-	int			rw;
-	int			data_type;
-	int			min;
-	int			max;
-	int			mul_factor;
-	int			div_factor;
-	void			*data;
-	ide_procset_t		*set;
-	int			auto_remove;
-	struct ide_settings_s	*next;
-} ide_settings_t;
-
-int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
+#define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \
+	.name	= __stringify(_name), \
+	.flags	= _flags, \
+	.min	= _min, \
+	.max	= _max, \
+	.get	= _get, \
+	.set	= _set, \
+	.mulf	= _mulf, \
+	.divf	= _divf, \
+}
+
+#define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \
+static const struct ide_devset ide_devset_##_name = \
+	__DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf)
+
+#define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \
+__IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL)
+
+#define ide_devset_rw_nolock(_name, _min, _max, _func) \
+IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func)
+
+#define ide_devset_w_nolock(_name, _min, _max, _func) \
+IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func)
+
+#define ide_devset_rw(_name, _min, _max, _field) \
+static ide_devset_get(_name, _field); \
+static ide_devset_set(_name, _field); \
+IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
+
+#define ide_devset_r(_name, _min, _max, _field) \
+ide_devset_get(_name, _field) \
+IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL)
 
 /*
  * /proc/ide interface
@@ -801,8 +841,6 @@ void ide_proc_unregister_port(ide_hwif_t *);
 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
 
-void ide_add_generic_settings(ide_drive_t *);
-
 read_proc_t proc_ide_read_capacity;
 read_proc_t proc_ide_read_geometry;
 
@@ -830,7 +868,6 @@ static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
-static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
 #endif
 
@@ -887,6 +924,7 @@ struct ide_driver_s {
 	void		(*shutdown)(ide_drive_t *);
 #ifdef CONFIG_IDE_PROC_FS
 	ide_proc_entry_t	*proc;
+	const struct ide_devset	**settings;
 #endif
 };
 
-- 
cgit v1.2.3


From 151a670186a0f8441798f90c8701647adb7a1589 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:28 +0200
Subject: ide: remove SECTOR_WORDS define

Just use SECTOR_SIZE instead.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c     | 5 +++--
 drivers/ide/ide-iops.c     | 2 +-
 drivers/ide/ide-probe.c    | 2 +-
 drivers/ide/ide-proc.c     | 5 +++--
 drivers/ide/ide-taskfile.c | 2 +-
 include/linux/ide.h        | 2 +-
 6 files changed, 10 insertions(+), 8 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 2e43ae15fb1b..474070c1ddb6 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -539,13 +539,14 @@ static int proc_idedisk_read_smart(char *page, char **start, off_t off,
 
 	if (get_smart_data(drive, page, sub_cmd) == 0) {
 		unsigned short *val = (unsigned short *) page;
-		char *out = ((char *)val) + (SECTOR_WORDS * 4);
+		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_WORDS * 2));
+		} while (i < SECTOR_SIZE / 2);
 		len = out - page;
 	}
 
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index ee44878e40d0..6256c2df62cc 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -693,7 +693,7 @@ int ide_driveid_update(ide_drive_t *drive)
 	}
 	local_irq_save(flags);
 	SELECT_MASK(drive, 0);
-	id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
+	id = kmalloc(SECTOR_SIZE, GFP_ATOMIC);
 	if (!id) {
 		local_irq_restore(flags);
 		return 0;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 62f7e1ef10c1..be121ffcc1dc 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -561,7 +561,7 @@ static inline u8 probe_for_drive (ide_drive_t *drive)
 	 *	Also note that 0 everywhere means "can't do X"
 	 */
  
-	drive->id = kzalloc(SECTOR_WORDS *4, GFP_KERNEL);
+	drive->id = kzalloc(SECTOR_SIZE, GFP_KERNEL);
 	drive->id_read = 0;
 	if(drive->id == NULL)
 	{
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 5634b3971d21..6489c647be82 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -100,13 +100,14 @@ static int proc_ide_read_identify
 
 		err = taskfile_lib_get_identify(drive, page);
 		if (!err) {
-			char *out = ((char *)page) + (SECTOR_WORDS * 4);
+			char *out = (char *)page + SECTOR_SIZE;
+
 			page = out;
 			do {
 				out += sprintf(out, "%04x%c",
 					le16_to_cpup(val), (++i & 7) ? ' ' : '\n');
 				val += 1;
-			} while (i < (SECTOR_WORDS * 2));
+			} while (i < SECTOR_SIZE / 2);
 			len = out - page;
 		}
 	}
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index b1fb815dbf68..7ffe9004a4d6 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -768,7 +768,7 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 
 	if (args[3]) {
 		tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
-		bufsize = SECTOR_WORDS * 4 * args[3];
+		bufsize = SECTOR_SIZE * args[3];
 		buf = kzalloc(bufsize, GFP_KERNEL);
 		if (buf == NULL)
 			return -ENOMEM;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 4667ec8aeebb..4444b0884e5d 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -126,7 +126,7 @@ struct ide_io_ports {
 #define PARTN_BITS	6	/* number of minor dev bits for partitions */
 #define MAX_DRIVES	2	/* per interface; 2 assumed by lots of code */
 #define SECTOR_SIZE	512
-#define SECTOR_WORDS	(SECTOR_SIZE / 4)	/* number of 32bit words per sector */
+
 #define IDE_LARGE_SEEK(b1,b2,t)	(((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
 
 /*
-- 
cgit v1.2.3


From 02d599a365d04658bc9ea71762ed17c895079927 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:29 +0200
Subject: ide: remove ->supports_dsc_overlap field from ide_driver_t

* Use drive->media and drive->scsi to check if ->dsc_overlap
  can be set by HDIO_SET_NICE ioctl in generic_ide_ioctl().

* Remove unused ->supports_dsc_overlap field from ide_driver_t.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-cd.c     |  1 -
 drivers/ide/ide-disk.c   |  1 -
 drivers/ide/ide-floppy.c |  1 -
 drivers/ide/ide-tape.c   |  1 -
 drivers/ide/ide.c        | 11 +++++------
 drivers/scsi/ide-scsi.c  |  1 -
 include/linux/ide.h      |  1 -
 7 files changed, 5 insertions(+), 12 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 1f5652326489..7ea90de55058 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1969,7 +1969,6 @@ static ide_driver_t ide_cdrom_driver = {
 	.remove			= ide_cd_remove,
 	.version		= IDECD_VERSION,
 	.media			= ide_cdrom,
-	.supports_dsc_overlap	= 1,
 	.do_request		= ide_cd_do_request,
 	.end_request		= ide_end_request,
 	.error			= __ide_error,
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 474070c1ddb6..08f47cb13425 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -980,7 +980,6 @@ static ide_driver_t idedisk_driver = {
 	.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,
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 673644fdb6f2..de8d42b3f698 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1130,7 +1130,6 @@ static ide_driver_t idefloppy_driver = {
 	.remove			= ide_floppy_remove,
 	.version		= IDEFLOPPY_VERSION,
 	.media			= ide_floppy,
-	.supports_dsc_overlap	= 0,
 	.do_request		= idefloppy_do_request,
 	.end_request		= idefloppy_end_request,
 	.error			= __ide_error,
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 7037accb0589..1fc1c2a6888f 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2607,7 +2607,6 @@ static ide_driver_t idetape_driver = {
 	.remove			= ide_tape_remove,
 	.version		= IDETAPE_VERSION,
 	.media			= ide_tape,
-	.supports_dsc_overlap 	= 1,
 	.do_request		= idetape_do_request,
 	.end_request		= idetape_end_request,
 	.error			= __ide_error,
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 5b3bfc78dcdd..4d0c661e78a5 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -562,7 +562,6 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 			unsigned int cmd, unsigned long arg)
 {
 	unsigned long flags;
-	ide_driver_t *drv;
 	int err = 0, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
 
 	switch (cmd) {
@@ -612,12 +611,12 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 			if (!capable(CAP_SYS_ADMIN)) return -EACCES;
 			if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
 				return -EPERM;
-			drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
-			drv = *(ide_driver_t **)bdev->bd_disk->private_data;
-			if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
-				drive->dsc_overlap = 0;
+			if (((arg >> IDE_NICE_DSC_OVERLAP) & 1) &&
+			    (drive->media == ide_disk ||
+			     drive->media == ide_floppy ||
+			     drive->scsi))
 				return -EPERM;
-			}
+			drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
 			drive->nice1 = (arg >> IDE_NICE_1) & 1;
 			return 0;
 		case HDIO_DRIVE_RESET:
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 65cf84b222c5..a2d003c5e85f 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -522,7 +522,6 @@ static ide_driver_t idescsi_driver = {
 	.remove			= ide_scsi_remove,
 	.version		= IDESCSI_VERSION,
 	.media			= ide_scsi,
-	.supports_dsc_overlap	= 0,
 	.do_request		= idescsi_do_request,
 	.end_request		= idescsi_end_request,
 	.error                  = idescsi_atapi_error,
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 9cb935f2e7ce..e5622bb5a4a1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -912,7 +912,6 @@ enum {
 struct ide_driver_s {
 	const char			*version;
 	u8				media;
-	unsigned supports_dsc_overlap	: 1;
 	ide_startstop_t	(*do_request)(ide_drive_t *, struct request *, sector_t);
 	int		(*end_request)(ide_drive_t *, int, int);
 	ide_startstop_t	(*error)(ide_drive_t *, struct request *rq, u8, u8);
-- 
cgit v1.2.3


From 942dcd85bf8edf38cdc3745306ca250684d99a61 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:30 +0200
Subject: ide: idedisk_supports_lba48() -> ata_id_lba48_enabled()

* Add ata_id_lba48_enabled() inline helper to <linux/ata.h>.

* idedisk_supports_lba48() -> ata_id_lba48_enabled()

  The latter one also checks validity of words 83 & 86.

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 21 ++++++---------------
 include/linux/ata.h    |  9 +++++++++
 2 files changed, 15 insertions(+), 15 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 08f47cb13425..8f49bc0ecbf8 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -383,16 +383,6 @@ static unsigned long long sectors_to_MB(unsigned long long n)
 	return n;
 }
 
-/*
- * The same here.
- */
-static inline int idedisk_supports_lba48(const u16 *id)
-{
-	return (id[ATA_ID_COMMAND_SET_2] & 0x0400) &&
-	       (id[ATA_ID_CFS_ENABLE_2] & 0x0400) &&
-	       ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
-}
-
 /*
  * Some disks report total number of sectors instead of
  * maximum sector address.  We list them here.
@@ -407,7 +397,7 @@ 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;
 
@@ -450,7 +440,7 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 	 */
 	int hpa = ata_id_hpa_enabled(id);
 
-	if (idedisk_supports_lba48(id)) {
+	if (ata_id_lba48_enabled(id)) {
 		/* drive speaks 48-bit LBA */
 		drive->select.b.lba = 1;
 		drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
@@ -754,9 +744,11 @@ static int set_lba_addressing(ide_drive_t *drive, int arg)
 	if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48)
 		return 0;
 
-	if (!idedisk_supports_lba48(drive->id))
+	if (ata_id_lba48_enabled(drive->id) == 0)
 		return -EIO;
+
 	drive->addressing = arg;
+
 	return 0;
 }
 
@@ -853,8 +845,7 @@ static void idedisk_setup(ide_drive_t *drive)
 	capacity = idedisk_capacity(drive);
 
 	if (!drive->forced_geom) {
-
-		if (idedisk_supports_lba48(drive->id)) {
+		if (ata_id_lba48_enabled(drive->id)) {
 			/* compatibility */
 			drive->bios_sect = 63;
 			drive->bios_head = 255;
diff --git a/include/linux/ata.h b/include/linux/ata.h
index d28aad991c75..8162257b474f 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -574,6 +574,15 @@ static inline int ata_id_has_lba48(const u16 *id)
 	return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
 }
 
+static inline int ata_id_lba48_enabled(const u16 *id)
+{
+	if (ata_id_has_lba48(id) == 0)
+		return 0;
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
+}
+
 static inline int ata_id_hpa_enabled(const u16 *id)
 {
 	/* Yes children, word 83 valid bits cover word 82 data */
-- 
cgit v1.2.3


From 4b58f17d7c45a8e5f4acda641bec388398b9c0fa Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:30 +0200
Subject: ide: ide_id_has_flush_cache() -> ata_id_flush_enabled()

* Add ata_id_flush_enabled() inline helper to <linux/ata.h>.

* ide_id_has_flush_cache() -> ata_id_flush_enabled()

  The latter one also checks if the command is marked as
  supported in word 83 and validity of words 83 & 86.

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 6 +++---
 drivers/ide/ide-io.c   | 2 +-
 include/linux/ata.h    | 9 +++++++++
 include/linux/ide.h    | 3 ---
 4 files changed, 13 insertions(+), 7 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 8f49bc0ecbf8..7b24dff17460 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -651,7 +651,7 @@ static void update_ordered(ide_drive_t *drive)
 		 * not available so we don't need to recheck that.
 		 */
 		capacity = idedisk_capacity(drive);
-		barrier = ide_id_has_flush_cache(id) && !drive->noflush &&
+		barrier = ata_id_flush_enabled(id) && !drive->noflush &&
 			(drive->addressing == 0 || capacity <= (1ULL << 28) ||
 			 ide_id_has_flush_cache_ext(id));
 
@@ -678,7 +678,7 @@ static int set_wcache(ide_drive_t *drive, int arg)
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (ide_id_has_flush_cache(drive->id)) {
+	if (ata_id_flush_enabled(drive->id)) {
 		memset(&args, 0, sizeof(ide_task_t));
 		args.tf.feature = arg ?
 			SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
@@ -886,7 +886,7 @@ static void idedisk_setup(ide_drive_t *drive)
 
 static void ide_cacheflush_p(ide_drive_t *drive)
 {
-	if (!drive->wcache || !ide_id_has_flush_cache(drive->id))
+	if (!drive->wcache || ata_id_flush_enabled(drive->id) == 0)
 		return;
 
 	if (do_idedisk_flushcache(drive))
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 99e0bbca3ace..c1596178fcae 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -184,7 +184,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
 		if (drive->media != ide_disk)
 			break;
 		/* Not supported? Switch to next step now. */
-		if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) {
+		if (!drive->wcache || ata_id_flush_enabled(drive->id) == 0) {
 			ide_complete_power_step(drive, rq, 0, 0);
 			return ide_stopped;
 		}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 8162257b474f..921cf0fc337f 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -558,6 +558,15 @@ static inline int ata_id_has_flush(const u16 *id)
 	return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
 }
 
+static inline int ata_id_flush_enabled(const u16 *id)
+{
+	if (ata_id_has_flush(id) == 0)
+		return 0;
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
+}
+
 static inline int ata_id_has_flush_ext(const u16 *id)
 {
 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 6e22cd20dd8b..d2213d7cc4cb 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1453,9 +1453,6 @@ extern struct mutex ide_cfg_mtx;
 extern struct bus_type ide_bus_type;
 extern struct class *ide_port_class;
 
-/* check if CACHE FLUSH command is supported (as defined in ATA-6) */
-#define ide_id_has_flush_cache(id)	((id)[ATA_ID_CFS_ENABLE_2] & 0x1000)
-
 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
 #define ide_id_has_flush_cache_ext(id)	\
 	(((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)
-- 
cgit v1.2.3


From ff2779b568e70822e0ef2cc7afeeefbe7c607652 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:31 +0200
Subject: ide: ide_id_has_flush_cache_ext() -> ata_id_flush_ext_enabled()

* Add ata_id_flush_ext_enabled() inline helper to <linux/ata.h>.

* ide_id_has_flush_cache_ext() -> ata_id_flush_ext_enabled()

  The latter one also checks if the command is marked as
  supported in word 83 and validity of words 83 & 86.

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c |  6 +++---
 drivers/ide/ide-io.c   |  2 +-
 include/linux/ata.h    | 13 +++++++++++++
 include/linux/ide.h    |  4 ----
 4 files changed, 17 insertions(+), 8 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 7b24dff17460..587d5aac7d5d 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -576,7 +576,7 @@ 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 = ATA_CMD_FLUSH_EXT;
 	else
@@ -653,7 +653,7 @@ static void update_ordered(ide_drive_t *drive)
 		capacity = idedisk_capacity(drive);
 		barrier = ata_id_flush_enabled(id) && !drive->noflush &&
 			(drive->addressing == 0 || capacity <= (1ULL << 28) ||
-			 ide_id_has_flush_cache_ext(id));
+			 ata_id_flush_ext_enabled(id));
 
 		printk(KERN_INFO "%s: cache flushes %ssupported\n",
 		       drive->name, barrier ? "" : "not ");
@@ -699,7 +699,7 @@ 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))
+	if (ata_id_flush_ext_enabled(drive->id))
 		args.tf.command = ATA_CMD_FLUSH_EXT;
 	else
 		args.tf.command = ATA_CMD_FLUSH;
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index c1596178fcae..ec6664b0d3a9 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -188,7 +188,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
 			ide_complete_power_step(drive, rq, 0, 0);
 			return ide_stopped;
 		}
-		if (ide_id_has_flush_cache_ext(drive->id))
+		if (ata_id_flush_ext_enabled(drive->id))
 			args->tf.command = ATA_CMD_FLUSH_EXT;
 		else
 			args->tf.command = ATA_CMD_FLUSH;
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 921cf0fc337f..81d9adeb819e 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -574,6 +574,19 @@ static inline int ata_id_has_flush_ext(const u16 *id)
 	return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
 }
 
+static inline int ata_id_flush_ext_enabled(const u16 *id)
+{
+	if (ata_id_has_flush_ext(id) == 0)
+		return 0;
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	/*
+	 * some Maxtor disks have bit 13 defined incorrectly
+	 * so check bit 10 too
+	 */
+	return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
+}
+
 static inline int ata_id_has_lba48(const u16 *id)
 {
 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d2213d7cc4cb..432eb98f7fe7 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1453,10 +1453,6 @@ extern struct mutex ide_cfg_mtx;
 extern struct bus_type ide_bus_type;
 extern struct class *ide_port_class;
 
-/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
-#define ide_id_has_flush_cache_ext(id)	\
-	(((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)
-
 static inline void ide_dump_identify(u8 *id)
 {
 	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
-- 
cgit v1.2.3


From a02227c9774b3bff08c7f557d06247e0a03ac435 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:31 +0200
Subject: ide: lba_capacity_is_ok() -> ata_id_is_lba_capacity_ok()

Rename lba_capacity_is_ok() to ata_id_is_lba_capacity_ok()
and move it to <linux/ata.h> (remove needless parens while at it).

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 52 +-------------------------------------------------
 include/linux/ata.h    | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 51 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 587d5aac7d5d..43025c9d8355 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -88,56 +88,6 @@ 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(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 */
-}
-
 static const u8 ide_rw_cmds[] = {
 	ATA_CMD_READ_MULTI,
 	ATA_CMD_WRITE_MULTI,
@@ -446,7 +396,7 @@ static void init_idedisk_capacity(ide_drive_t *drive)
 		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;
 		drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 4c3f50070033..a53318b8cbd0 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -782,6 +782,56 @@ static inline int atapi_id_dmadir(const u16 *dev_id)
 	return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
 }
 
+/*
+ * ata_id_is_lba_capacity_ok() performs a sanity check on
+ * the claimed LBA capacity value for the device.
+ *
+ * Returns 1 if LBA capacity looks sensible, 0 otherwise.
+ *
+ * It is called only once for each device.
+ */
+static inline int ata_id_is_lba_capacity_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 */
+}
+
 static inline void ata_id_to_hd_driveid(u16 *id)
 {
 #ifdef __BIG_ENDIAN
-- 
cgit v1.2.3


From aa7687738af3332470e02ac1060f6c046d83c9a3 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Fri, 10 Oct 2008 22:39:33 +0200
Subject: ide: add ide_setting_ioctl() helper

* Add struct ide_ioctl_devset representing ioctl device setting.

* Add ide_setting_ioctl() helper for matching given ioctl
  and its parameters against table of ioctl device settings.

* Convert ide_setting_ioctl() and idedisk_ioctl() to use
  ide_setting_ioctl().

* Un-export ide_setting_mtx.

While at it:

* {get,set}_lba_addressing() -> {get,set}_addressing()

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-disk.c | 59 +++++++++++++++-----------------------------------
 drivers/ide/ide.c      | 53 +++++++++++++++++++++++++++++----------------
 include/linux/ide.h    | 14 +++++++++++-
 3 files changed, 65 insertions(+), 61 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 43025c9d8355..119063470820 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -676,7 +676,7 @@ static int set_acoustic(ide_drive_t *drive, int arg)
 	return 0;
 }
 
-ide_devset_get(lba_addressing, addressing);
+ide_devset_get(addressing, addressing);
 
 /*
  * drive->addressing:
@@ -684,7 +684,7 @@ 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;
@@ -704,7 +704,7 @@ static int set_lba_addressing(ide_drive_t *drive, int arg)
 
 #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(address,	0,   2, 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);
@@ -753,7 +753,7 @@ static void idedisk_setup(ide_drive_t *drive)
 			drive->doorlocking = 1;
 	}
 
-	(void)set_lba_addressing(drive, 1);
+	(void)set_addressing(drive, 1);
 
 	if (drive->addressing == 1) {
 		int max_s = 2048;
@@ -1000,51 +1000,28 @@ static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 	return 0;
 }
 
+static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = {
+{ HDIO_GET_ADDRESS,	HDIO_SET_ADDRESS,   get_addressing, set_addressing },
+{ HDIO_GET_MULTCOUNT,	HDIO_SET_MULTCOUNT, get_multcount,  set_multcount  },
+{ HDIO_GET_NOWERR,	HDIO_SET_NOWERR,    get_nowerr,	    set_nowerr	   },
+{ HDIO_GET_WCACHE,	HDIO_SET_WCACHE,    get_wcache,	    set_wcache	   },
+{ HDIO_GET_ACOUSTIC,	HDIO_SET_ACOUSTIC,  get_acoustic,   set_acoustic   },
+{ 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;
-	}
+	int err;
 
-	return generic_ide_ioctl(drive, file, bdev, cmd, arg);
+	err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_disk_ioctl_settings);
+	if (err != -EOPNOTSUPP)
+		return err;
 
-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;
+	return generic_ide_ioctl(drive, file, bdev, cmd, arg);
 }
 
 static int idedisk_media_changed(struct gendisk *disk)
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index f78e789ea5f7..4910924abeb7 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -250,8 +250,6 @@ void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
 
 DEFINE_MUTEX(ide_setting_mtx);
 
-EXPORT_SYMBOL_GPL(ide_setting_mtx);
-
 /**
  *	ide_spin_wait_hwgroup	-	wait for group
  *	@drive: drive in the group
@@ -558,23 +556,23 @@ static int ide_set_nice_ioctl(ide_drive_t *drive, unsigned long arg)
 	return 0;
 }
 
+static const struct ide_ioctl_devset ide_ioctl_settings[] = {
+{ HDIO_GET_32BIT,	 HDIO_SET_32BIT,	get_io_32bit,  set_io_32bit  },
+{ HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS,	get_ksettings, set_ksettings },
+{ HDIO_GET_UNMASKINTR,	 HDIO_SET_UNMASKINTR,	get_unmaskirq, set_unmaskirq },
+{ HDIO_GET_DMA,		 HDIO_SET_DMA,		get_using_dma, set_using_dma },
+{ -1,			 HDIO_SET_PIO_MODE,	NULL,	       set_pio_mode  },
+{ 0 }
+};
+
 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
 			unsigned int cmd, unsigned long arg)
 {
-	unsigned long flags;
-	int err = 0, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
+	int err;
 
-	switch (cmd) {
-	case HDIO_GET_32BIT:	    getfunc = get_io_32bit;	 goto read_val;
-	case HDIO_GET_KEEPSETTINGS: getfunc = get_ksettings;	 goto read_val;
-	case HDIO_GET_UNMASKINTR:   getfunc = get_unmaskirq;	 goto read_val;
-	case HDIO_GET_DMA:	    getfunc = get_using_dma;	 goto read_val;
-	case HDIO_SET_32BIT:	    setfunc = set_io_32bit;	 goto set_val;
-	case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings;	 goto set_val;
-	case HDIO_SET_PIO_MODE:	    setfunc = set_pio_mode;	 goto set_val;
-	case HDIO_SET_UNMASKINTR:   setfunc = set_unmaskirq;	 goto set_val;
-	case HDIO_SET_DMA:	    setfunc = set_using_dma;	 goto set_val;
-	}
+	err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_ioctl_settings);
+	if (err != -EOPNOTSUPP)
+		return err;
 
 	switch (cmd) {
 		case HDIO_OBSOLETE_IDENTITY:
@@ -629,11 +627,29 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 		default:
 			return -EINVAL;
 	}
+}
+EXPORT_SYMBOL(generic_ide_ioctl);
+
+int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
+		      unsigned int cmd, unsigned long arg,
+		      const struct ide_ioctl_devset *s)
+{
+	unsigned long flags;
+	int err = -EOPNOTSUPP;
+
+	for (; s->get_ioctl; s++) {
+		if (s->get && s->get_ioctl == cmd)
+			goto read_val;
+		else if (s->set && s->set_ioctl == cmd)
+			goto set_val;
+	}
+
+	return err;
 
 read_val:
 	mutex_lock(&ide_setting_mtx);
 	spin_lock_irqsave(&ide_lock, flags);
-	err = getfunc(drive);
+	err = s->get(drive);
 	spin_unlock_irqrestore(&ide_lock, flags);
 	mutex_unlock(&ide_setting_mtx);
 	return err >= 0 ? put_user(err, (long __user *)arg) : err;
@@ -646,14 +662,13 @@ set_val:
 			err = -EACCES;
 		else {
 			mutex_lock(&ide_setting_mtx);
-			err = setfunc(drive, arg);
+			err = s->set(drive, arg);
 			mutex_unlock(&ide_setting_mtx);
 		}
 	}
 	return err;
 }
-
-EXPORT_SYMBOL(generic_ide_ioctl);
+EXPORT_SYMBOL_GPL(ide_setting_ioctl);
 
 /**
  * ide_device_get	-	get an additional reference to a ide_drive_t
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 42f39781af87..64624b9b645c 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -932,7 +932,19 @@ struct ide_driver_s {
 int ide_device_get(ide_drive_t *);
 void ide_device_put(ide_drive_t *);
 
-int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
+struct ide_ioctl_devset {
+	unsigned int	get_ioctl;
+	unsigned int	set_ioctl;
+
+	int		(*get)(ide_drive_t *);
+	int		(*set)(ide_drive_t *, int);
+};
+
+int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
+		      unsigned long, const struct ide_ioctl_devset *);
+
+int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
+		      unsigned, unsigned long);
 
 extern int ide_vlb_clk;
 extern int ide_pci_clk;
-- 
cgit v1.2.3


From 92f1f8fd8040e7b50a67a850a935509bb01201bb Mon Sep 17 00:00:00 2001
From: Elias Oltmanns <eo@nebensachen.de>
Date: Fri, 10 Oct 2008 22:39:40 +0200
Subject: ide: Remove ide_spin_wait_hwgroup() and use special requests instead

Use a special request for serialisation purposes and get rid of the
awkward ide_spin_wait_hwgroup(). This also involves converting the
ide_devset structure so it can be shared by the /proc and the ioctl code.

Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
[bart: use rq->cmd[] directly]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-cd.c     |   8 +--
 drivers/ide/ide-disk.c   |  66 +++++++++++------------
 drivers/ide/ide-floppy.c |  20 +++----
 drivers/ide/ide-io.c     |  40 ++++++++++++++
 drivers/ide/ide-ioctls.c |  21 ++++----
 drivers/ide/ide-proc.c   | 102 +++++++++++++++++------------------
 drivers/ide/ide-tape.c   |  48 ++++++++---------
 drivers/ide/ide.c        |  81 ++++++----------------------
 drivers/scsi/ide-scsi.c  |  34 ++++++------
 include/linux/ide.h      | 138 +++++++++++++++++++++++++----------------------
 10 files changed, 274 insertions(+), 284 deletions(-)

(limited to 'drivers/ide/ide-disk.c')

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 7ea90de55058..465a92ca0179 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1809,11 +1809,11 @@ static ide_proc_entry_t idecd_proc[] = {
 	{ NULL, 0, NULL, NULL }
 };
 
-ide_devset_rw(dsc_overlap, 0, 1, dsc_overlap);
+ide_devset_rw_field(dsc_overlap, dsc_overlap);
 
-static const struct ide_devset *idecd_settings[] = {
-	&ide_devset_dsc_overlap,
-	NULL
+static const struct ide_proc_devset idecd_settings[] = {
+	IDE_PROC_DEVSET(dsc_overlap, 0, 1),
+	{ 0 },
 };
 #endif
 
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 119063470820..01846f244b40 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -575,11 +575,8 @@ 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;
 	drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
-	spin_unlock_irq(&ide_lock);
 	return 0;
 }
 
@@ -702,33 +699,34 @@ static int set_addressing(ide_drive_t *drive, int arg)
 	return 0;
 }
 
+ide_devset_rw(acoustic, acoustic);
+ide_devset_rw(address, addressing);
+ide_devset_rw(multcount, multcount);
+ide_devset_rw(wcache, wcache);
+
+ide_devset_rw_sync(nowerr, nowerr);
+
 #ifdef CONFIG_IDE_PROC_FS
-ide_devset_rw_nolock(acoustic,	0, 254, acoustic);
-ide_devset_rw_nolock(address,	0,   2, 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
+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_devset_rw_field(failures, failures);
+ide_devset_rw_field(lun, lun);
+ide_devset_rw_field(max_failures, max_failures);
+
+static const struct ide_proc_devset idedisk_settings[] = {
+	IDE_PROC_DEVSET(acoustic,	0,   254),
+	IDE_PROC_DEVSET(address,	0,     2),
+	IDE_PROC_DEVSET(bios_cyl,	0, 65535),
+	IDE_PROC_DEVSET(bios_head,	0,   255),
+	IDE_PROC_DEVSET(bios_sect,	0,    63),
+	IDE_PROC_DEVSET(failures,	0, 65535),
+	IDE_PROC_DEVSET(lun,		0,     7),
+	IDE_PROC_DEVSET(max_failures,	0, 65535),
+	IDE_PROC_DEVSET(multcount,	0,    16),
+	IDE_PROC_DEVSET(nowerr,		0,     1),
+	IDE_PROC_DEVSET(wcache,		0,     1),
+	{ 0 },
 };
 #endif
 
@@ -1001,11 +999,11 @@ static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 }
 
 static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = {
-{ HDIO_GET_ADDRESS,	HDIO_SET_ADDRESS,   get_addressing, set_addressing },
-{ HDIO_GET_MULTCOUNT,	HDIO_SET_MULTCOUNT, get_multcount,  set_multcount  },
-{ HDIO_GET_NOWERR,	HDIO_SET_NOWERR,    get_nowerr,	    set_nowerr	   },
-{ HDIO_GET_WCACHE,	HDIO_SET_WCACHE,    get_wcache,	    set_wcache	   },
-{ HDIO_GET_ACOUSTIC,	HDIO_SET_ACOUSTIC,  get_acoustic,   set_acoustic   },
+{ HDIO_GET_ADDRESS,	HDIO_SET_ADDRESS,   &ide_devset_address   },
+{ HDIO_GET_MULTCOUNT,	HDIO_SET_MULTCOUNT, &ide_devset_multcount },
+{ HDIO_GET_NOWERR,	HDIO_SET_NOWERR,    &ide_devset_nowerr	  },
+{ HDIO_GET_WCACHE,	HDIO_SET_WCACHE,    &ide_devset_wcache	  },
+{ HDIO_GET_ACOUSTIC,	HDIO_SET_ACOUSTIC,  &ide_devset_acoustic  },
 { 0 }
 };
 
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index a63aba2c8265..d36f155470a4 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -629,9 +629,9 @@ static sector_t idefloppy_capacity(ide_drive_t *drive)
 }
 
 #ifdef CONFIG_IDE_PROC_FS
-ide_devset_rw(bios_cyl,  0, 1023, bios_cyl);
-ide_devset_rw(bios_head, 0,  255, bios_head);
-ide_devset_rw(bios_sect, 0,   63, bios_sect);
+ide_devset_rw_field(bios_cyl, bios_cyl);
+ide_devset_rw_field(bios_head, bios_head);
+ide_devset_rw_field(bios_sect, bios_sect);
 
 static int get_ticks(ide_drive_t *drive)
 {
@@ -646,14 +646,14 @@ static int set_ticks(ide_drive_t *drive, int arg)
 	return 0;
 }
 
-IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks);
+IDE_DEVSET(ticks, DS_SYNC, get_ticks, set_ticks);
 
-static const struct ide_devset *idefloppy_settings[] = {
-	&ide_devset_bios_cyl,
-	&ide_devset_bios_head,
-	&ide_devset_bios_sect,
-	&ide_devset_ticks,
-	NULL
+static const struct ide_proc_devset idefloppy_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(ticks,	   0,  255),
+	{ 0 },
 };
 #endif
 
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index ec6664b0d3a9..1c51949833be 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -716,9 +716,49 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
  	return ide_stopped;
 }
 
+int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
+		       int arg)
+{
+	struct request_queue *q = drive->queue;
+	struct request *rq;
+	int ret = 0;
+
+	if (!(setting->flags & DS_SYNC))
+		return setting->set(drive, arg);
+
+	rq = blk_get_request(q, READ, GFP_KERNEL);
+	if (!rq)
+		return -ENOMEM;
+
+	rq->cmd_type = REQ_TYPE_SPECIAL;
+	rq->cmd_len = 5;
+	rq->cmd[0] = REQ_DEVSET_EXEC;
+	*(int *)&rq->cmd[1] = arg;
+	rq->special = setting->set;
+
+	if (blk_execute_rq(q, NULL, rq, 0))
+		ret = rq->errors;
+	blk_put_request(rq);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ide_devset_execute);
+
 static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
 {
 	switch (rq->cmd[0]) {
+	case REQ_DEVSET_EXEC:
+	{
+		int err, (*setfunc)(ide_drive_t *, int) = rq->special;
+
+		err = setfunc(drive, *(int *)&rq->cmd[1]);
+		if (err)
+			rq->errors = err;
+		else
+			err = 1;
+		ide_end_request(drive, err, 0);
+		return ide_stopped;
+	}
 	case REQ_DRIVE_RESET:
 		return ide_do_reset(drive);
 	default:
diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c
index 7a0d62e7286b..cf01564901af 100644
--- a/drivers/ide/ide-ioctls.c
+++ b/drivers/ide/ide-ioctls.c
@@ -6,11 +6,11 @@
 #include <linux/ide.h>
 
 static const struct ide_ioctl_devset ide_ioctl_settings[] = {
-{ HDIO_GET_32BIT,	 HDIO_SET_32BIT,	get_io_32bit,  set_io_32bit  },
-{ HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS,	get_ksettings, set_ksettings },
-{ HDIO_GET_UNMASKINTR,	 HDIO_SET_UNMASKINTR,	get_unmaskirq, set_unmaskirq },
-{ HDIO_GET_DMA,		 HDIO_SET_DMA,		get_using_dma, set_using_dma },
-{ -1,			 HDIO_SET_PIO_MODE,	NULL,	       set_pio_mode  },
+{ HDIO_GET_32BIT,	 HDIO_SET_32BIT,	&ide_devset_io_32bit  },
+{ HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS,	&ide_devset_keepsettings },
+{ HDIO_GET_UNMASKINTR,	 HDIO_SET_UNMASKINTR,	&ide_devset_unmaskirq },
+{ HDIO_GET_DMA,		 HDIO_SET_DMA,		&ide_devset_using_dma },
+{ -1,			 HDIO_SET_PIO_MODE,	&ide_devset_pio_mode  },
 { 0 }
 };
 
@@ -18,13 +18,14 @@ int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
 		      unsigned int cmd, unsigned long arg,
 		      const struct ide_ioctl_devset *s)
 {
+	const struct ide_devset *ds;
 	unsigned long flags;
 	int err = -EOPNOTSUPP;
 
-	for (; s->get_ioctl; s++) {
-		if (s->get && s->get_ioctl == cmd)
+	for (; (ds = s->setting); s++) {
+		if (ds->get && s->get_ioctl == cmd)
 			goto read_val;
-		else if (s->set && s->set_ioctl == cmd)
+		else if (ds->set && s->set_ioctl == cmd)
 			goto set_val;
 	}
 
@@ -33,7 +34,7 @@ int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
 read_val:
 	mutex_lock(&ide_setting_mtx);
 	spin_lock_irqsave(&ide_lock, flags);
-	err = s->get(drive);
+	err = ds->get(drive);
 	spin_unlock_irqrestore(&ide_lock, flags);
 	mutex_unlock(&ide_setting_mtx);
 	return err >= 0 ? put_user(err, (long __user *)arg) : err;
@@ -46,7 +47,7 @@ set_val:
 			err = -EACCES;
 		else {
 			mutex_lock(&ide_setting_mtx);
-			err = s->set(drive, arg);
+			err = ide_devset_execute(drive, ds, arg);
 			mutex_unlock(&ide_setting_mtx);
 		}
 	}
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 6489c647be82..e7030a491463 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -124,15 +124,16 @@ static int proc_ide_read_identify
  *	setting semaphore
  */
 
-static const struct ide_devset *ide_find_setting(const struct ide_devset **st,
-						 char *name)
+static
+const struct ide_proc_devset *ide_find_setting(const struct ide_proc_devset *st,
+					       char *name)
 {
-	while (*st) {
-		if (strcmp((*st)->name, name) == 0)
+	while (st->name) {
+		if (strcmp(st->name, name) == 0)
 			break;
 		st++;
 	}
-	return *st;
+	return st->name ? st : NULL;
 }
 
 /**
@@ -149,15 +150,16 @@ static const struct ide_devset *ide_find_setting(const struct ide_devset **st,
  */
 
 static int ide_read_setting(ide_drive_t *drive,
-			    const struct ide_devset *setting)
+			    const struct ide_proc_devset *setting)
 {
+	const struct ide_devset *ds = setting->setting;
 	int val = -EINVAL;
 
-	if ((setting->flags & S_READ)) {
+	if (ds->get) {
 		unsigned long flags;
 
 		spin_lock_irqsave(&ide_lock, flags);
-		val = setting->get(drive);
+		val = ds->get(drive);
 		spin_unlock_irqrestore(&ide_lock, flags);
 	}
 
@@ -183,24 +185,21 @@ static int ide_read_setting(ide_drive_t *drive,
  */
 
 static int ide_write_setting(ide_drive_t *drive,
-			     const struct ide_devset *setting, int val)
+			     const struct ide_proc_devset *setting, int val)
 {
+	const struct ide_devset *ds = setting->setting;
+
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
-	if (setting->set && (setting->flags & S_NOLOCK))
-		return setting->set(drive, val);
-	if (!(setting->flags & S_WRITE))
+	if (!ds->set)
 		return -EPERM;
-	if (val < setting->min || val > setting->max)
+	if ((ds->flags & DS_SYNC)
+	    && (val < setting->min || val > setting->max))
 		return -EINVAL;
-	if (ide_spin_wait_hwgroup(drive))
-		return -EBUSY;
-	setting->set(drive, val);
-	spin_unlock_irq(&ide_lock);
-	return 0;
+	return ide_devset_execute(drive, ds, val);
 }
 
-static ide_devset_get(xfer_rate, current_speed);
+ide_devset_get(xfer_rate, current_speed);
 
 static int set_xfer_rate (ide_drive_t *drive, int arg)
 {
@@ -226,29 +225,22 @@ static int set_xfer_rate (ide_drive_t *drive, int arg)
 	return err;
 }
 
-ide_devset_rw_nolock(current_speed, 0, 70, xfer_rate);
-ide_devset_rw_nolock(io_32bit, 0, 1 + (SUPPORT_VLB_SYNC << 1), io_32bit);
-ide_devset_rw_nolock(keepsettings, 0, 1, ksettings);
-ide_devset_rw_nolock(unmaskirq, 0, 1, unmaskirq);
-ide_devset_rw_nolock(using_dma, 0, 1, using_dma);
-
-ide_devset_w_nolock(pio_mode, 0, 255, pio_mode);
-
-ide_devset_rw(init_speed, 0, 70, init_speed);
-ide_devset_rw(nice1, 0, 1, nice1);
-ide_devset_rw(number, 0, 3, dn);
-
-static const struct ide_devset *ide_generic_settings[] = {
-	&ide_devset_current_speed,
-	&ide_devset_init_speed,
-	&ide_devset_io_32bit,
-	&ide_devset_keepsettings,
-	&ide_devset_nice1,
-	&ide_devset_number,
-	&ide_devset_pio_mode,
-	&ide_devset_unmaskirq,
-	&ide_devset_using_dma,
-	NULL
+ide_devset_rw(current_speed, xfer_rate);
+ide_devset_rw_field(init_speed, init_speed);
+ide_devset_rw_field(nice1, nice1);
+ide_devset_rw_field(number, dn);
+
+static const struct ide_proc_devset ide_generic_settings[] = {
+	IDE_PROC_DEVSET(current_speed, 0, 70),
+	IDE_PROC_DEVSET(init_speed, 0, 70),
+	IDE_PROC_DEVSET(io_32bit,  0, 1 + (SUPPORT_VLB_SYNC << 1)),
+	IDE_PROC_DEVSET(keepsettings, 0, 1),
+	IDE_PROC_DEVSET(nice1, 0, 1),
+	IDE_PROC_DEVSET(number, 0, 3),
+	IDE_PROC_DEVSET(pio_mode, 0, 255),
+	IDE_PROC_DEVSET(unmaskirq, 0, 1),
+	IDE_PROC_DEVSET(using_dma, 0, 1),
+	{ 0 },
 };
 
 static void proc_ide_settings_warn(void)
@@ -266,7 +258,8 @@ static void proc_ide_settings_warn(void)
 static int proc_ide_read_settings
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
-	const struct ide_devset *setting, **g, **d;
+	const struct ide_proc_devset *setting, *g, *d;
+	const struct ide_devset *ds;
 	ide_drive_t	*drive = (ide_drive_t *) data;
 	char		*out = page;
 	int		len, rc, mul_factor, div_factor;
@@ -278,17 +271,17 @@ static int proc_ide_read_settings
 	d = drive->settings;
 	out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
 	out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
-	while (*g || (d && *d)) {
+	while (g->name || (d && d->name)) {
 		/* read settings in the alphabetical order */
-		if (*g && d && *d) {
-			if (strcmp((*d)->name, (*g)->name) < 0)
-				setting = *d++;
+		if (g->name && d && d->name) {
+			if (strcmp(d->name, g->name) < 0)
+				setting = d++;
 			else
-				setting = *g++;
-		} else if (d && *d) {
-			setting = *d++;
+				setting = g++;
+		} else if (d && d->name) {
+			setting = d++;
 		} else
-			setting = *g++;
+			setting = g++;
 		mul_factor = setting->mulf ? setting->mulf(drive) : 1;
 		div_factor = setting->divf ? setting->divf(drive) : 1;
 		out += sprintf(out, "%-24s", setting->name);
@@ -298,9 +291,10 @@ static int proc_ide_read_settings
 		else
 			out += sprintf(out, "%-16s", "write-only");
 		out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
-		if (setting->flags & S_READ)
+		ds = setting->setting;
+		if (ds->get)
 			out += sprintf(out, "r");
-		if (setting->flags & S_WRITE)
+		if (ds->set)
 			out += sprintf(out, "w");
 		out += sprintf(out, "\n");
 	}
@@ -319,7 +313,7 @@ static int proc_ide_write_settings(struct file *file, const char __user *buffer,
 	int		for_real = 0, mul_factor, div_factor;
 	unsigned long	n;
 
-	const struct ide_devset *setting;
+	const struct ide_proc_devset *setting;
 	char *buf, *s;
 
 	if (!capable(CAP_SYS_ADMIN))
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 25190966ed39..f8c84df4a0bc 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2188,40 +2188,40 @@ static int set_##name(ide_drive_t *drive, int arg) \
 	return 0; \
 }
 
-#define ide_tape_devset_rw(_name, _min, _max, _field, _mulf, _divf) \
+#define ide_tape_devset_rw_field(_name, _field) \
 ide_tape_devset_get(_name, _field) \
 ide_tape_devset_set(_name, _field) \
-__IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name, _mulf, _divf)
+IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
 
-#define ide_tape_devset_r(_name, _min, _max, _field, _mulf, _divf) \
+#define ide_tape_devset_r_field(_name, _field) \
 ide_tape_devset_get(_name, _field) \
-__IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL, _mulf, _divf)
+IDE_DEVSET(_name, 0, get_##_name, NULL)
 
 static int mulf_tdsc(ide_drive_t *drive)	{ return 1000; }
 static int divf_tdsc(ide_drive_t *drive)	{ return   HZ; }
 static int divf_buffer(ide_drive_t *drive)	{ return    2; }
 static int divf_buffer_size(ide_drive_t *drive)	{ return 1024; }
 
-ide_devset_rw(dsc_overlap,	0,	1, dsc_overlap);
-
-ide_tape_devset_rw(debug_mask,	0, 0xffff, debug_mask,  NULL, NULL);
-ide_tape_devset_rw(tdsc, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX,
-		   best_dsc_rw_freq, mulf_tdsc, divf_tdsc);
-
-ide_tape_devset_r(avg_speed,	0, 0xffff, avg_speed,   NULL, NULL);
-ide_tape_devset_r(speed,	0, 0xffff, caps[14],    NULL, NULL);
-ide_tape_devset_r(buffer,	0, 0xffff, caps[16],    NULL, divf_buffer);
-ide_tape_devset_r(buffer_size,	0, 0xffff, buffer_size, NULL, divf_buffer_size);
-
-static const struct ide_devset *idetape_settings[] = {
-	&ide_devset_avg_speed,
-	&ide_devset_buffer,
-	&ide_devset_buffer_size,
-	&ide_devset_debug_mask,
-	&ide_devset_dsc_overlap,
-	&ide_devset_speed,
-	&ide_devset_tdsc,
-	NULL
+ide_devset_rw_field(dsc_overlap, dsc_overlap);
+
+ide_tape_devset_rw_field(debug_mask, debug_mask);
+ide_tape_devset_rw_field(tdsc, best_dsc_rw_freq);
+
+ide_tape_devset_r_field(avg_speed, avg_speed);
+ide_tape_devset_r_field(speed, caps[14]);
+ide_tape_devset_r_field(buffer, caps[16]);
+ide_tape_devset_r_field(buffer_size, buffer_size);
+
+static const struct ide_proc_devset idetape_settings[] = {
+	__IDE_PROC_DEVSET(avg_speed,	0, 0xffff, NULL, NULL),
+	__IDE_PROC_DEVSET(buffer,	0, 0xffff, NULL, divf_buffer),
+	__IDE_PROC_DEVSET(buffer_size,	0, 0xffff, NULL, divf_buffer_size),
+	__IDE_PROC_DEVSET(debug_mask,	0, 0xffff, NULL, NULL),
+	__IDE_PROC_DEVSET(dsc_overlap,	0,      1, NULL, NULL),
+	__IDE_PROC_DEVSET(speed,	0, 0xffff, NULL, NULL),
+	__IDE_PROC_DEVSET(tdsc,		IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX,
+					mulf_tdsc, divf_tdsc),
+	{ 0 },
 };
 #endif
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 349d7fa75585..9dcf5aed92cb 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -250,42 +250,9 @@ void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
 
 DEFINE_MUTEX(ide_setting_mtx);
 
-/**
- *	ide_spin_wait_hwgroup	-	wait for group
- *	@drive: drive in the group
- *
- *	Wait for an IDE device group to go non busy and then return
- *	holding the ide_lock which guards the hwgroup->busy status
- *	and right to use it.
- */
-
-int ide_spin_wait_hwgroup (ide_drive_t *drive)
-{
-	ide_hwgroup_t *hwgroup = HWGROUP(drive);
-	unsigned long timeout = jiffies + (3 * HZ);
-
-	spin_lock_irq(&ide_lock);
-
-	while (hwgroup->busy) {
-		unsigned long lflags;
-		spin_unlock_irq(&ide_lock);
-		local_irq_set(lflags);
-		if (time_after(jiffies, timeout)) {
-			local_irq_restore(lflags);
-			printk(KERN_ERR "%s: channel busy\n", drive->name);
-			return -EBUSY;
-		}
-		local_irq_restore(lflags);
-		spin_lock_irq(&ide_lock);
-	}
-	return 0;
-}
-
-EXPORT_SYMBOL(ide_spin_wait_hwgroup);
-
 ide_devset_get(io_32bit, io_32bit);
 
-int set_io_32bit(ide_drive_t *drive, int arg)
+static int set_io_32bit(ide_drive_t *drive, int arg)
 {
 	if (drive->no_io_32bit)
 		return -EPERM;
@@ -293,37 +260,28 @@ int set_io_32bit(ide_drive_t *drive, int arg)
 	if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
 		return -EINVAL;
 
-	if (ide_spin_wait_hwgroup(drive))
-		return -EBUSY;
-
 	drive->io_32bit = arg;
 
-	spin_unlock_irq(&ide_lock);
-
 	return 0;
 }
 
 ide_devset_get(ksettings, keep_settings);
 
-int set_ksettings(ide_drive_t *drive, int arg)
+static int set_ksettings(ide_drive_t *drive, int arg)
 {
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (ide_spin_wait_hwgroup(drive))
-		return -EBUSY;
 	drive->keep_settings = arg;
-	spin_unlock_irq(&ide_lock);
 
 	return 0;
 }
 
 ide_devset_get(using_dma, using_dma);
 
-int set_using_dma(ide_drive_t *drive, int arg)
+static int set_using_dma(ide_drive_t *drive, int arg)
 {
 #ifdef CONFIG_BLK_DEV_IDEDMA
-	ide_hwif_t *hwif = drive->hwif;
 	int err = -EPERM;
 
 	if (arg < 0 || arg > 1)
@@ -332,18 +290,9 @@ int set_using_dma(ide_drive_t *drive, int arg)
 	if (ata_id_has_dma(drive->id) == 0)
 		goto out;
 
-	if (hwif->dma_ops == NULL)
+	if (drive->hwif->dma_ops == NULL)
 		goto out;
 
-	err = -EBUSY;
-	if (ide_spin_wait_hwgroup(drive))
-		goto out;
-	/*
-	 * set ->busy flag, unlock and let it ride
-	 */
-	hwif->hwgroup->busy = 1;
-	spin_unlock_irq(&ide_lock);
-
 	err = 0;
 
 	if (arg) {
@@ -352,12 +301,6 @@ int set_using_dma(ide_drive_t *drive, int arg)
 	} else
 		ide_dma_off(drive);
 
-	/*
-	 * lock, clear ->busy flag and unlock before leaving
-	 */
-	spin_lock_irq(&ide_lock);
-	hwif->hwgroup->busy = 0;
-	spin_unlock_irq(&ide_lock);
 out:
 	return err;
 #else
@@ -368,7 +311,7 @@ out:
 #endif
 }
 
-int set_pio_mode(ide_drive_t *drive, int arg)
+static int set_pio_mode(ide_drive_t *drive, int arg)
 {
 	struct request *rq;
 	ide_hwif_t *hwif = drive->hwif;
@@ -398,7 +341,7 @@ int set_pio_mode(ide_drive_t *drive, int arg)
 
 ide_devset_get(unmaskirq, unmask);
 
-int set_unmaskirq(ide_drive_t *drive, int arg)
+static int set_unmaskirq(ide_drive_t *drive, int arg)
 {
 	if (drive->no_unmask)
 		return -EPERM;
@@ -406,14 +349,20 @@ int set_unmaskirq(ide_drive_t *drive, int arg)
 	if (arg < 0 || arg > 1)
 		return -EINVAL;
 
-	if (ide_spin_wait_hwgroup(drive))
-		return -EBUSY;
 	drive->unmask = arg;
-	spin_unlock_irq(&ide_lock);
 
 	return 0;
 }
 
+#define ide_gen_devset_rw(_name, _func) \
+__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
+
+ide_gen_devset_rw(io_32bit, io_32bit);
+ide_gen_devset_rw(keepsettings, ksettings);
+ide_gen_devset_rw(unmaskirq, unmaskirq);
+ide_gen_devset_rw(using_dma, using_dma);
+__IDE_DEVSET(pio_mode, 0, NULL, set_pio_mode);
+
 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 {
 	ide_drive_t *drive = dev->driver_data;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 27c01e368977..90212ac33be3 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -400,25 +400,25 @@ static int set_##name(ide_drive_t *drive, int arg) \
 	return 0; \
 }
 
-#define ide_scsi_devset_rw(_name, _min, _max, _field) \
+#define ide_scsi_devset_rw_field(_name, _field) \
 ide_scsi_devset_get(_name, _field); \
 ide_scsi_devset_set(_name, _field); \
-IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
-
-ide_devset_rw(bios_cyl,		0, 1023, bios_cyl);
-ide_devset_rw(bios_head,	0,  255, bios_head);
-ide_devset_rw(bios_sect,	0,   63, bios_sect);
-
-ide_scsi_devset_rw(transform,	0,    3, transform);
-ide_scsi_devset_rw(log,		0,    1, log);
-
-static const struct ide_devset *idescsi_settings[] = {
-	&ide_devset_bios_cyl,
-	&ide_devset_bios_head,
-	&ide_devset_bios_sect,
-	&ide_devset_log,
-	&ide_devset_transform,
-	NULL
+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 },
 };
 #endif
 
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a9eced25acce..a9d82d6e6bdd 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -161,6 +161,7 @@ enum {
  * Values should be in the range of 0x20 to 0x3f.
  */
 #define REQ_DRIVE_RESET		0x20
+#define REQ_DEVSET_EXEC		0x21
 
 /*
  * Check for an interrupt and acknowledge the interrupt status
@@ -405,7 +406,7 @@ struct ide_drive_s {
 	u16			*id;	/* identification info */
 #ifdef CONFIG_IDE_PROC_FS
 	struct proc_dir_entry *proc;	/* /proc/ide/ directory entry */
-	const struct ide_devset **settings; /* /proc/ide/ drive settings */
+	const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
 #endif
 	struct hwif_s		*hwif;	/* actually (ide_hwif_t *) */
 
@@ -707,29 +708,62 @@ typedef struct ide_driver_s ide_driver_t;
 
 extern struct mutex ide_setting_mtx;
 
-int get_io_32bit(ide_drive_t *);
-int set_io_32bit(ide_drive_t *, int);
-int get_ksettings(ide_drive_t *);
-int set_ksettings(ide_drive_t *, int);
-int set_pio_mode(ide_drive_t *, int);
-int get_unmaskirq(ide_drive_t *);
-int set_unmaskirq(ide_drive_t *, int);
-int get_using_dma(ide_drive_t *);
-int set_using_dma(ide_drive_t *, int);
+/*
+ * configurable drive settings
+ */
+
+#define DS_SYNC	(1 << 0)
+
+struct ide_devset {
+	int		(*get)(ide_drive_t *);
+	int		(*set)(ide_drive_t *, int);
+	unsigned int	flags;
+};
+
+#define __DEVSET(_flags, _get, _set) { \
+	.flags	= _flags, \
+	.get	= _get,	\
+	.set	= _set,	\
+}
 
 #define ide_devset_get(name, field) \
-int get_##name(ide_drive_t *drive) \
+static int get_##name(ide_drive_t *drive) \
 { \
 	return drive->field; \
 }
 
 #define ide_devset_set(name, field) \
-int set_##name(ide_drive_t *drive, int arg) \
+static int set_##name(ide_drive_t *drive, int arg) \
 { \
 	drive->field = arg; \
 	return 0; \
 }
 
+#define __IDE_DEVSET(_name, _flags, _get, _set) \
+const struct ide_devset ide_devset_##_name = \
+	__DEVSET(_flags, _get, _set)
+
+#define IDE_DEVSET(_name, _flags, _get, _set) \
+static __IDE_DEVSET(_name, _flags, _get, _set)
+
+#define ide_devset_rw(_name, _func) \
+IDE_DEVSET(_name, 0, get_##_func, set_##_func)
+
+#define ide_devset_w(_name, _func) \
+IDE_DEVSET(_name, 0, NULL, set_##_func)
+
+#define ide_devset_rw_sync(_name, _func) \
+IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
+
+#define ide_decl_devset(_name) \
+extern const struct ide_devset ide_devset_##_name
+
+ide_decl_devset(io_32bit);
+ide_decl_devset(keepsettings);
+ide_decl_devset(pio_mode);
+ide_decl_devset(unmaskirq);
+ide_decl_devset(using_dma);
+
 /* ATAPI packet command flags */
 enum {
 	/* set when an error is considered normal - no retry (ide-tape) */
@@ -797,60 +831,34 @@ struct ide_atapi_pc {
 
 #ifdef CONFIG_IDE_PROC_FS
 /*
- * configurable drive settings
+ * /proc/ide interface
  */
 
-#define S_READ		(1 << 0)
-#define S_WRITE		(1 << 1)
-#define S_RW		(S_READ | S_WRITE)
-#define S_NOLOCK	(1 << 2)
-
-struct ide_devset {
-	const char	*name;
-	unsigned int	flags;
-	int		min, max;
-	int		(*get)(ide_drive_t *);
-	int		(*set)(ide_drive_t *, int);
-	int		(*mulf)(ide_drive_t *);
-	int		(*divf)(ide_drive_t *);
+#define ide_devset_rw_field(_name, _field) \
+ide_devset_get(_name, _field); \
+ide_devset_set(_name, _field); \
+IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
+
+struct ide_proc_devset {
+	const char		*name;
+	const struct ide_devset	*setting;
+	int			min, max;
+	int			(*mulf)(ide_drive_t *);
+	int			(*divf)(ide_drive_t *);
 };
 
-#define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \
-	.name	= __stringify(_name), \
-	.flags	= _flags, \
-	.min	= _min, \
-	.max	= _max, \
-	.get	= _get, \
-	.set	= _set, \
-	.mulf	= _mulf, \
-	.divf	= _divf, \
+#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
+	.name = __stringify(_name), \
+	.setting = &ide_devset_##_name, \
+	.min = _min, \
+	.max = _max, \
+	.mulf = _mulf, \
+	.divf = _divf, \
 }
 
-#define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \
-static const struct ide_devset ide_devset_##_name = \
-	__DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf)
-
-#define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \
-__IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL)
-
-#define ide_devset_rw_nolock(_name, _min, _max, _func) \
-IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func)
+#define IDE_PROC_DEVSET(_name, _min, _max) \
+__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
 
-#define ide_devset_w_nolock(_name, _min, _max, _func) \
-IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func)
-
-#define ide_devset_rw(_name, _min, _max, _field) \
-static ide_devset_get(_name, _field); \
-static ide_devset_set(_name, _field); \
-IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
-
-#define ide_devset_r(_name, _min, _max, _field) \
-ide_devset_get(_name, _field) \
-IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL)
-
-/*
- * /proc/ide interface
- */
 typedef struct {
 	const char	*name;
 	mode_t		mode;
@@ -948,8 +956,8 @@ struct ide_driver_s {
 	void		(*resume)(ide_drive_t *);
 	void		(*shutdown)(ide_drive_t *);
 #ifdef CONFIG_IDE_PROC_FS
-	ide_proc_entry_t	*proc;
-	const struct ide_devset	**settings;
+	ide_proc_entry_t		*proc;
+	const struct ide_proc_devset	*settings;
 #endif
 };
 
@@ -961,9 +969,7 @@ void ide_device_put(ide_drive_t *);
 struct ide_ioctl_devset {
 	unsigned int	get_ioctl;
 	unsigned int	set_ioctl;
-
-	int		(*get)(ide_drive_t *);
-	int		(*set)(ide_drive_t *, int);
+	const struct ide_devset *setting;
 };
 
 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
@@ -1002,6 +1008,9 @@ int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
 
 extern ide_startstop_t ide_do_reset (ide_drive_t *);
 
+extern int ide_devset_execute(ide_drive_t *drive,
+			      const struct ide_devset *setting, int arg);
+
 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
 
 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
@@ -1191,7 +1200,6 @@ extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
 
 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
 
-extern int ide_spin_wait_hwgroup(ide_drive_t *);
 extern void ide_timer_expiry(unsigned long);
 extern irqreturn_t ide_intr(int irq, void *dev_id);
 extern void do_ide_request(struct request_queue *);
-- 
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