Merge branch 'linus' into core/futexes

1 files changed, 549 insertions, 373 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 1524829f73f2..54525be4b5f8 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>
@@ -17,6 +17,7 @@
 #include <linux/device.h>
 #include <linux/pci.h>
 #include <linux/completion.h>
+#include <linux/pm.h>
 #ifdef CONFIG_BLK_DEV_IDEACPI
 #include <acpi/acpi.h>
 #endif
@@ -47,12 +48,6 @@ typedef unsigned char	byte;	/* used everywhere */
 #define ERROR_RESET	3	/* Reset controller every 4th retry */
 #define ERROR_RECAL	1	/* Recalibrate every 2nd retry */
 
-/*
- * state flags
- */
-
-#define DMA_PIO_RETRY	1	/* retrying in PIO */
-
 #define HWIF(drive)		((ide_hwif_t *)((drive)->hwif))
 #define HWGROUP(drive)		((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
 
@@ -87,12 +82,13 @@ struct ide_io_ports {
 };
 
 #define OK_STAT(stat,good,bad)	(((stat)&((good)|(bad)))==(good))
-#define BAD_R_STAT		(BUSY_STAT   | ERR_STAT)
-#define BAD_W_STAT		(BAD_R_STAT  | WRERR_STAT)
-#define BAD_STAT		(BAD_R_STAT  | DRQ_STAT)
-#define DRIVE_READY		(READY_STAT  | SEEK_STAT)
 
-#define BAD_CRC			(ABRT_ERR    | ICRC_ERR)
+#define BAD_R_STAT	(ATA_BUSY | ATA_ERR)
+#define BAD_W_STAT	(BAD_R_STAT | ATA_DF)
+#define BAD_STAT	(BAD_R_STAT | ATA_DRQ)
+#define DRIVE_READY	(ATA_DRDY | ATA_DSC)
+
+#define BAD_CRC		(ATA_ABORTED | ATA_ICRC)
 
 #define SATA_NR_PORTS		(3)	/* 16 possible ?? */
 
@@ -125,24 +121,43 @@ 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)))
 
 /*
  * Timeouts for various operations:
  */
-#define WAIT_DRQ	(HZ/10)		/* 100msec - spec allows up to 20ms */
-#define WAIT_READY	(5*HZ)		/* 5sec - some laptops are very slow */
-#define WAIT_PIDENTIFY	(10*HZ)	/* 10sec  - should be less than 3ms (?), if all ATAPI CD is closed at boot */
-#define WAIT_WORSTCASE	(30*HZ)	/* 30sec  - worst case when spinning up */
-#define WAIT_CMD	(10*HZ)	/* 10sec  - maximum wait for an IRQ to happen */
-#define WAIT_MIN_SLEEP	(2*HZ/100)	/* 20msec - minimum sleep time */
+enum {
+	/* spec allows up to 20ms */
+	WAIT_DRQ	= HZ / 10,	/* 100ms */
+	/* some laptops are very slow */
+	WAIT_READY	= 5 * HZ,	/* 5s */
+	/* should be less than 3ms (?), if all ATAPI CD is closed at boot */
+	WAIT_PIDENTIFY	= 10 * HZ,	/* 10s */
+	/* worst case when spinning up */
+	WAIT_WORSTCASE	= 30 * HZ,	/* 30s */
+	/* maximum wait for an IRQ to happen */
+	WAIT_CMD	= 10 * HZ,	/* 10s */
+	/* Some drives require a longer IRQ timeout. */
+	WAIT_FLOPPY_CMD	= 50 * HZ,	/* 50s */
+	/*
+	 * Some drives (for example, Seagate STT3401A Travan) require a very
+	 * long timeout, because they don't return an interrupt or clear their
+	 * BSY bit until after the command completes (even retension commands).
+	 */
+	WAIT_TAPE_CMD	= 900 * HZ,	/* 900s */
+	/* minimum sleep time */
+	WAIT_MIN_SLEEP	= HZ / 50,	/* 20ms */
+};
 
 /*
  * Op codes for special requests to be handled by ide_special_rq().
  * Values should be in the range of 0x20 to 0x3f.
  */
 #define REQ_DRIVE_RESET		0x20
+#define REQ_DEVSET_EXEC		0x21
+#define REQ_PARK_HEADS		0x22
+#define REQ_UNPARK_HEADS	0x23
 
 /*
  * Check for an interrupt and acknowledge the interrupt status
@@ -249,8 +264,6 @@ static inline int __ide_default_irq(unsigned long base)
  * set_geometry	: respecify drive geometry
  * recalibrate	: seek to cyl 0
  * set_multmode	: set multmode count
- * set_tune	: tune interface for drive
- * serviced	: service command
  * reserved	: unused
  */
 typedef union {
@@ -259,43 +272,11 @@ typedef union {
 		unsigned set_geometry	: 1;
 		unsigned recalibrate	: 1;
 		unsigned set_multmode	: 1;
-		unsigned set_tune	: 1;
-		unsigned serviced	: 1;
-		unsigned reserved	: 3;
+		unsigned reserved	: 5;
 	} b;
 } special_t;
 
 /*
- * ATA-IDE Select Register, aka Device-Head
- *
- * head		: always zeros here
- * unit		: drive select number: 0/1
- * bit5		: always 1
- * lba		: using LBA instead of CHS
- * bit7		: always 1
- */
-typedef union {
-	unsigned all			: 8;
-	struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
-		unsigned head		: 4;
-		unsigned unit		: 1;
-		unsigned bit5		: 1;
-		unsigned lba		: 1;
-		unsigned bit7		: 1;
-#elif defined(__BIG_ENDIAN_BITFIELD)
-		unsigned bit7		: 1;
-		unsigned lba		: 1;
-		unsigned bit5		: 1;
-		unsigned unit		: 1;
-		unsigned head		: 4;
-#else
-#error "Please fix <asm/byteorder.h>"
-#endif
-	} b;
-} select_t, ata_select_t;
-
-/*
  * Status returned from various ide_ functions
  */
 typedef enum {
@@ -303,22 +284,205 @@ typedef enum {
 	ide_started,	/* a drive operation was started, handler was set */
 } ide_startstop_t;
 
+enum {
+	IDE_TFLAG_LBA48			= (1 << 0),
+	IDE_TFLAG_FLAGGED		= (1 << 2),
+	IDE_TFLAG_OUT_DATA		= (1 << 3),
+	IDE_TFLAG_OUT_HOB_FEATURE	= (1 << 4),
+	IDE_TFLAG_OUT_HOB_NSECT		= (1 << 5),
+	IDE_TFLAG_OUT_HOB_LBAL		= (1 << 6),
+	IDE_TFLAG_OUT_HOB_LBAM		= (1 << 7),
+	IDE_TFLAG_OUT_HOB_LBAH		= (1 << 8),
+	IDE_TFLAG_OUT_HOB		= IDE_TFLAG_OUT_HOB_FEATURE |
+					  IDE_TFLAG_OUT_HOB_NSECT |
+					  IDE_TFLAG_OUT_HOB_LBAL |
+					  IDE_TFLAG_OUT_HOB_LBAM |
+					  IDE_TFLAG_OUT_HOB_LBAH,
+	IDE_TFLAG_OUT_FEATURE		= (1 << 9),
+	IDE_TFLAG_OUT_NSECT		= (1 << 10),
+	IDE_TFLAG_OUT_LBAL		= (1 << 11),
+	IDE_TFLAG_OUT_LBAM		= (1 << 12),
+	IDE_TFLAG_OUT_LBAH		= (1 << 13),
+	IDE_TFLAG_OUT_TF		= IDE_TFLAG_OUT_FEATURE |
+					  IDE_TFLAG_OUT_NSECT |
+					  IDE_TFLAG_OUT_LBAL |
+					  IDE_TFLAG_OUT_LBAM |
+					  IDE_TFLAG_OUT_LBAH,
+	IDE_TFLAG_OUT_DEVICE		= (1 << 14),
+	IDE_TFLAG_WRITE			= (1 << 15),
+	IDE_TFLAG_FLAGGED_SET_IN_FLAGS	= (1 << 16),
+	IDE_TFLAG_IN_DATA		= (1 << 17),
+	IDE_TFLAG_CUSTOM_HANDLER	= (1 << 18),
+	IDE_TFLAG_DMA_PIO_FALLBACK	= (1 << 19),
+	IDE_TFLAG_IN_HOB_FEATURE	= (1 << 20),
+	IDE_TFLAG_IN_HOB_NSECT		= (1 << 21),
+	IDE_TFLAG_IN_HOB_LBAL		= (1 << 22),
+	IDE_TFLAG_IN_HOB_LBAM		= (1 << 23),
+	IDE_TFLAG_IN_HOB_LBAH		= (1 << 24),
+	IDE_TFLAG_IN_HOB_LBA		= IDE_TFLAG_IN_HOB_LBAL |
+					  IDE_TFLAG_IN_HOB_LBAM |
+					  IDE_TFLAG_IN_HOB_LBAH,
+	IDE_TFLAG_IN_HOB		= IDE_TFLAG_IN_HOB_FEATURE |
+					  IDE_TFLAG_IN_HOB_NSECT |
+					  IDE_TFLAG_IN_HOB_LBA,
+	IDE_TFLAG_IN_FEATURE		= (1 << 1),
+	IDE_TFLAG_IN_NSECT		= (1 << 25),
+	IDE_TFLAG_IN_LBAL		= (1 << 26),
+	IDE_TFLAG_IN_LBAM		= (1 << 27),
+	IDE_TFLAG_IN_LBAH		= (1 << 28),
+	IDE_TFLAG_IN_LBA		= IDE_TFLAG_IN_LBAL |
+					  IDE_TFLAG_IN_LBAM |
+					  IDE_TFLAG_IN_LBAH,
+	IDE_TFLAG_IN_TF			= IDE_TFLAG_IN_NSECT |
+					  IDE_TFLAG_IN_LBA,
+	IDE_TFLAG_IN_DEVICE		= (1 << 29),
+	IDE_TFLAG_HOB			= IDE_TFLAG_OUT_HOB |
+					  IDE_TFLAG_IN_HOB,
+	IDE_TFLAG_TF			= IDE_TFLAG_OUT_TF |
+					  IDE_TFLAG_IN_TF,
+	IDE_TFLAG_DEVICE		= IDE_TFLAG_OUT_DEVICE |
+					  IDE_TFLAG_IN_DEVICE,
+	/* force 16-bit I/O operations */
+	IDE_TFLAG_IO_16BIT		= (1 << 30),
+	/* ide_task_t was allocated using kmalloc() */
+	IDE_TFLAG_DYN			= (1 << 31),
+};
+
+struct ide_taskfile {
+	u8	hob_data;	/*  0: high data byte (for TASKFILE IOCTL) */
+
+	u8	hob_feature;	/*  1-5: additional data to support LBA48 */
+	u8	hob_nsect;
+	u8	hob_lbal;
+	u8	hob_lbam;
+	u8	hob_lbah;
+
+	u8	data;		/*  6: low data byte (for TASKFILE IOCTL) */
+
+	union {			/*  7: */
+		u8 error;	/*   read:  error */
+		u8 feature;	/*  write: feature */
+	};
+
+	u8	nsect;		/*  8: number of sectors */
+	u8	lbal;		/*  9: LBA low */
+	u8	lbam;		/* 10: LBA mid */
+	u8	lbah;		/* 11: LBA high */
+
+	u8	device;		/* 12: device select */
+
+	union {			/* 13: */
+		u8 status;	/*  read: status  */
+		u8 command;	/* write: command */
+	};
+};
+
+typedef struct ide_task_s {
+	union {
+		struct ide_taskfile	tf;
+		u8			tf_array[14];
+	};
+	u32			tf_flags;
+	int			data_phase;
+	struct request		*rq;		/* copy of request */
+	void			*special;	/* valid_t generally */
+} ide_task_t;
+
+/* ATAPI packet command flags */
+enum {
+	/* set when an error is considered normal - no retry (ide-tape) */
+	PC_FLAG_ABORT			= (1 << 0),
+	PC_FLAG_SUPPRESS_ERROR		= (1 << 1),
+	PC_FLAG_WAIT_FOR_DSC		= (1 << 2),
+	PC_FLAG_DMA_OK			= (1 << 3),
+	PC_FLAG_DMA_IN_PROGRESS		= (1 << 4),
+	PC_FLAG_DMA_ERROR		= (1 << 5),
+	PC_FLAG_WRITING			= (1 << 6),
+	/* command timed out */
+	PC_FLAG_TIMEDOUT		= (1 << 7),
+};
+
+/*
+ * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
+ * This is used for several packet commands (not for READ/WRITE commands).
+ */
+#define IDE_PC_BUFFER_SIZE	256
+
+struct ide_atapi_pc {
+	/* actual packet bytes */
+	u8 c[12];
+	/* incremented on each retry */
+	int retries;
+	int error;
+
+	/* bytes to transfer */
+	int req_xfer;
+	/* bytes actually transferred */
+	int xferred;
+
+	/* data buffer */
+	u8 *buf;
+	/* current buffer position */
+	u8 *cur_pos;
+	int buf_size;
+	/* missing/available data on the current buffer */
+	int b_count;
+
+	/* the corresponding request */
+	struct request *rq;
+
+	unsigned long flags;
+
+	/*
+	 * those are more or less driver-specific and some of them are subject
+	 * to change/removal later.
+	 */
+	u8 pc_buf[IDE_PC_BUFFER_SIZE];
+
+	/* idetape only */
+	struct idetape_bh *bh;
+	char *b_data;
+
+	/* idescsi only for now */
+	struct scatterlist *sg;
+	unsigned int sg_cnt;
+
+	struct scsi_cmnd *scsi_cmd;
+	void (*done) (struct scsi_cmnd *);
+
+	unsigned long timeout;
+};
+
+struct ide_devset;
 struct ide_driver_s;
-struct ide_settings_s;
 
 #ifdef CONFIG_BLK_DEV_IDEACPI
 struct ide_acpi_drive_link;
 struct ide_acpi_hwif_link;
 #endif
 
+struct ide_drive_s;
+
+struct ide_disk_ops {
+	int		(*check)(struct ide_drive_s *, const char *);
+	int		(*get_capacity)(struct ide_drive_s *);
+	void		(*setup)(struct ide_drive_s *);
+	void		(*flush)(struct ide_drive_s *);
+	int		(*init_media)(struct ide_drive_s *, struct gendisk *);
+	int		(*set_doorlock)(struct ide_drive_s *, struct gendisk *,
+					int);
+	ide_startstop_t	(*do_request)(struct ide_drive_s *, struct request *,
+				      sector_t);
+	int		(*end_request)(struct ide_drive_s *, int, int);
+	int		(*ioctl)(struct ide_drive_s *, struct block_device *,
+				 fmode_t, unsigned int, unsigned long);
+};
+
 /* ATAPI device flags */
 enum {
 	IDE_AFLAG_DRQ_INTERRUPT		= (1 << 0),
-	IDE_AFLAG_MEDIA_CHANGED		= (1 << 1),
 
 	/* ide-cd */
-	/* Drive cannot lock the door. */
-	IDE_AFLAG_NO_DOORLOCK		= (1 << 2),
 	/* Drive cannot eject the disc. */
 	IDE_AFLAG_NO_EJECT		= (1 << 3),
 	/* Drive is a pre ATAPI 1.2 drive. */
@@ -348,25 +512,87 @@ enum {
 	IDE_AFLAG_LE_SPEED_FIELDS	= (1 << 17),
 
 	/* ide-floppy */
-	/* Format in progress */
-	IDE_AFLAG_FORMAT_IN_PROGRESS	= (1 << 18),
 	/* Avoid commands not supported in Clik drive */
 	IDE_AFLAG_CLIK_DRIVE		= (1 << 19),
 	/* Requires BH algorithm for packets */
 	IDE_AFLAG_ZIP_DRIVE		= (1 << 20),
+	/* Supports format progress report */
+	IDE_AFLAG_SRFP			= (1 << 22),
 
 	/* ide-tape */
-	IDE_AFLAG_IGNORE_DSC		= (1 << 21),
+	IDE_AFLAG_IGNORE_DSC		= (1 << 23),
 	/* 0 When the tape position is unknown */
-	IDE_AFLAG_ADDRESS_VALID		= (1 <<	22),
+	IDE_AFLAG_ADDRESS_VALID		= (1 <<	24),
 	/* Device already opened */
-	IDE_AFLAG_BUSY			= (1 << 23),
+	IDE_AFLAG_BUSY			= (1 << 25),
 	/* Attempt to auto-detect the current user block size */
-	IDE_AFLAG_DETECT_BS		= (1 << 24),
+	IDE_AFLAG_DETECT_BS		= (1 << 26),
 	/* Currently on a filemark */
-	IDE_AFLAG_FILEMARK		= (1 << 25),
+	IDE_AFLAG_FILEMARK		= (1 << 27),
 	/* 0 = no tape is loaded, so we don't rewind after ejecting */
-	IDE_AFLAG_MEDIUM_PRESENT	= (1 << 26)
+	IDE_AFLAG_MEDIUM_PRESENT	= (1 << 28),
+
+	IDE_AFLAG_NO_AUTOCLOSE		= (1 << 29),
+};
+
+/* device flags */
+enum {
+	/* restore settings after device reset */
+	IDE_DFLAG_KEEP_SETTINGS		= (1 << 0),
+	/* device is using DMA for read/write */
+	IDE_DFLAG_USING_DMA		= (1 << 1),
+	/* okay to unmask other IRQs */
+	IDE_DFLAG_UNMASK		= (1 << 2),
+	/* don't attempt flushes */
+	IDE_DFLAG_NOFLUSH		= (1 << 3),
+	/* DSC overlap */
+	IDE_DFLAG_DSC_OVERLAP		= (1 << 4),
+	/* give potential excess bandwidth */
+	IDE_DFLAG_NICE1			= (1 << 5),
+	/* device is physically present */
+	IDE_DFLAG_PRESENT		= (1 << 6),
+	/* device ejected hint */
+	IDE_DFLAG_DEAD			= (1 << 7),
+	/* id read from device (synthetic if not set) */
+	IDE_DFLAG_ID_READ		= (1 << 8),
+	IDE_DFLAG_NOPROBE		= (1 << 9),
+	/* need to do check_media_change() */
+	IDE_DFLAG_REMOVABLE		= (1 << 10),
+	/* needed for removable devices */
+	IDE_DFLAG_ATTACH		= (1 << 11),
+	IDE_DFLAG_FORCED_GEOM		= (1 << 12),
+	/* disallow setting unmask bit */
+	IDE_DFLAG_NO_UNMASK		= (1 << 13),
+	/* disallow enabling 32-bit I/O */
+	IDE_DFLAG_NO_IO_32BIT		= (1 << 14),
+	/* for removable only: door lock/unlock works */
+	IDE_DFLAG_DOORLOCKING		= (1 << 15),
+	/* disallow DMA */
+	IDE_DFLAG_NODMA			= (1 << 16),
+	/* powermanagment told us not to do anything, so sleep nicely */
+	IDE_DFLAG_BLOCKED		= (1 << 17),
+	/* ide-scsi emulation */
+	IDE_DFLAG_SCSI			= (1 << 18),
+	/* sleeping & sleep field valid */
+	IDE_DFLAG_SLEEPING		= (1 << 19),
+	IDE_DFLAG_POST_RESET		= (1 << 20),
+	IDE_DFLAG_UDMA33_WARNED		= (1 << 21),
+	IDE_DFLAG_LBA48			= (1 << 22),
+	/* status of write cache */
+	IDE_DFLAG_WCACHE		= (1 << 23),
+	/* used for ignoring ATA_DF */
+	IDE_DFLAG_NOWERR		= (1 << 24),
+	/* retrying in PIO */
+	IDE_DFLAG_DMA_PIO_RETRY		= (1 << 25),
+	IDE_DFLAG_LBA			= (1 << 26),
+	/* don't unload heads */
+	IDE_DFLAG_NO_UNLOAD		= (1 << 27),
+	/* heads unloaded, please don't reset port */
+	IDE_DFLAG_PARKED		= (1 << 28),
+	IDE_DFLAG_MEDIA_CHANGED		= (1 << 29),
+	/* write protect */
+	IDE_DFLAG_WP			= (1 << 30),
+	IDE_DFLAG_FORMAT_IN_PROGRESS	= (1 << 31),
 };
 
 struct ide_drive_s {
@@ -378,72 +604,49 @@ 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 */
+	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_proc_devset *settings; /* /proc/ide/ drive settings */
 #endif
 	struct hwif_s		*hwif;	/* actually (ide_hwif_t *) */
 
+	const struct ide_disk_ops *disk_ops;
+
+	unsigned long dev_flags;
+
 	unsigned long sleep;		/* sleep until this time */
 	unsigned long service_start;	/* time we started last request */
 	unsigned long service_time;	/* service time of last request */
 	unsigned long timeout;		/* max time to wait for irq */
 
 	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	select;			/* basic drive/head select reg value */
 	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 present	: 1;	/* drive is physically present */
-	unsigned dead		: 1;	/* device ejected hint */
-	unsigned id_read	: 1;	/* 1=id read from disk 0 = synthetic */
-	unsigned noprobe 	: 1;	/* from:  hdx=noprobe */
-	unsigned removable	: 1;	/* 1 if need to do check_media_change */
-	unsigned attach		: 1;	/* needed for removable devices */
-	unsigned forced_geom	: 1;	/* 1 if hdx=c,h,s was given at boot */
-	unsigned no_unmask	: 1;	/* disallow setting unmask bit */
-	unsigned no_io_32bit	: 1;	/* disallow enabling 32bit I/O */
-	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 */
-	unsigned post_reset	: 1;
-	unsigned udma33_warned	: 1;
-
-	u8	addressing;	/* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
+	u8	dma;			/* atapi dma flag */
+
         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 */
 	u8	mult_count;	/* current multiple sector setting */
 	u8	mult_req;	/* requested multiple sector setting */
-	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 WRERR_STAT */
-	u8	nowerr;		/* used for ignoring WRERR_STAT */
-	u8	sect0;		/* offset of first sector for DM6:DDO */
+	u8	bad_wstat;	/* 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 */
 	u8	bios_sect;	/* BIOS/fdisk/LILO sectors per track */
 
+	/* delay this long before sending packet command */
+	u8 pc_delay;
+
 	unsigned int	bios_cyl;	/* BIOS/fdisk/LILO number of cyls */
 	unsigned int	cyl;		/* "real" number of cyls */
 	unsigned int	drive_data;	/* used by set_pio_mode/selectproc */
@@ -455,6 +658,9 @@ struct ide_drive_s {
 
 	int		lun;		/* logical unit */
 	int		crc_count;	/* crc counter to reduce drive speed */
+
+	unsigned long	debug_mask;	/* debugging levels switch */
+
 #ifdef CONFIG_BLK_DEV_IDEACPI
 	struct ide_acpi_drive_link *acpidata;
 #endif
@@ -462,21 +668,32 @@ struct ide_drive_s {
 	struct device	gendev;
 	struct completion gendev_rel_comp;	/* to deal with device release() */
 
+	/* current packet command */
+	struct ide_atapi_pc *pc;
+
 	/* callback for packet commands */
-	void (*pc_callback)(struct ide_drive_s *);
+	void (*pc_callback)(struct ide_drive_s *, int);
+
+	void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
+	int  (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
+			      unsigned int, int);
 
 	unsigned long atapi_flags;
+
+	struct ide_atapi_pc request_sense_pc;
+	struct request request_sense_rq;
 };
 
 typedef struct ide_drive_s ide_drive_t;
 
-#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
+#define to_ide_device(dev)		container_of(dev, ide_drive_t, gendev)
 
-#define IDE_CHIPSET_PCI_MASK	\
-    ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
-#define IDE_CHIPSET_IS_PCI(c)	((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
+#define to_ide_drv(obj, cont_type)	\
+	container_of(obj, struct cont_type, kref)
+
+#define ide_drv_g(disk, cont_type)	\
+	container_of((disk)->private_data, struct cont_type, driver)
 
-struct ide_task_s;
 struct ide_port_info;
 
 struct ide_tp_ops {
@@ -510,6 +727,7 @@ extern const struct ide_tp_ops default_tp_ops;
  * @resetproc:		routine to reset controller after a disk reset
  * @maskproc:		special host masking for drive selection
  * @quirkproc:		check host's drive quirk list
+ * @clear_irq:		clear IRQ
  *
  * @mdma_filter:	filter MDMA modes
  * @udma_filter:	filter UDMA modes
@@ -526,6 +744,7 @@ struct ide_port_ops {
 	void	(*resetproc)(ide_drive_t *);
 	void	(*maskproc)(ide_drive_t *, int);
 	void	(*quirkproc)(ide_drive_t *);
+	void	(*clear_irq)(ide_drive_t *);
 
 	u8	(*mdma_filter)(ide_drive_t *);
 	u8	(*udma_filter)(ide_drive_t *);
@@ -565,7 +784,6 @@ typedef struct hwif_s {
 	u8 major;	/* our major number */
 	u8 index;	/* 0 for ide0; 1 for ide1; ... */
 	u8 channel;	/* for dual-port chips: 0=primary, 1=secondary */
-	u8 bus_state;	/* power state of the IDE bus */
 
 	u32 host_flags;
 
@@ -589,12 +807,16 @@ typedef struct hwif_s {
 	const struct ide_port_ops	*port_ops;
 	const struct ide_dma_ops	*dma_ops;
 
-	void (*ide_dma_clear_irq)(ide_drive_t *drive);
-
 	/* dma physical region descriptor table (cpu view) */
 	unsigned int	*dmatable_cpu;
 	/* dma physical region descriptor table (dma view) */
 	dma_addr_t	dmatable_dma;
+
+	/* maximum number of PRD table entries */
+	int prd_max_nents;
+	/* PRD entry size in bytes */
+	int prd_ent_size;
+
 	/* Scatter-gather list used to build the above */
 	struct scatterlist *sg_table;
 	int sg_max_nents;		/* Maximum number of entries in it */
@@ -604,6 +826,8 @@ typedef struct hwif_s {
 	/* data phase of the active command (currently only valid for PIO/DMA) */
 	int		data_phase;
 
+	struct ide_task_s task;		/* current command */
+
 	unsigned int nsect;
 	unsigned int nleft;
 	struct scatterlist *cursg;
@@ -632,17 +856,18 @@ typedef struct hwif_s {
 
 	void		*hwif_data;	/* extra hwif data */
 
-	unsigned dma;
-
 #ifdef CONFIG_BLK_DEV_IDEACPI
 	struct ide_acpi_hwif_link *acpidata;
 #endif
 } ____cacheline_internodealigned_in_smp ide_hwif_t;
 
+#define MAX_HOST_PORTS 4
+
 struct ide_host {
-	ide_hwif_t	*ports[MAX_HWIFS];
+	ide_hwif_t	*ports[MAX_HOST_PORTS];
 	unsigned int	n_ports;
 	struct device	*dev[2];
+	unsigned int	(*init_chipset)(struct pci_dev *);
 	unsigned long	host_flags;
 	void		*host_priv;
 };
@@ -690,102 +915,116 @@ typedef struct ide_driver_s ide_driver_t;
 
 extern struct mutex ide_setting_mtx;
 
-int set_io_32bit(ide_drive_t *, int);
-int set_pio_mode(ide_drive_t *, int);
-int set_using_dma(ide_drive_t *, int);
+/*
+ * configurable drive settings
+ */
 
-/* ATAPI packet command flags */
-enum {
-	/* set when an error is considered normal - no retry (ide-tape) */
-	PC_FLAG_ABORT			= (1 << 0),
-	PC_FLAG_SUPPRESS_ERROR		= (1 << 1),
-	PC_FLAG_WAIT_FOR_DSC		= (1 << 2),
-	PC_FLAG_DMA_OK			= (1 << 3),
-	PC_FLAG_DMA_IN_PROGRESS		= (1 << 4),
-	PC_FLAG_DMA_ERROR		= (1 << 5),
-	PC_FLAG_WRITING			= (1 << 6),
-	/* command timed out */
-	PC_FLAG_TIMEDOUT		= (1 << 7),
+#define DS_SYNC	(1 << 0)
+
+struct ide_devset {
+	int		(*get)(ide_drive_t *);
+	int		(*set)(ide_drive_t *, int);
+	unsigned int	flags;
 };
 
-struct ide_atapi_pc {
-	/* actual packet bytes */
-	u8 c[12];
-	/* incremented on each retry */
-	int retries;
-	int error;
+#define __DEVSET(_flags, _get, _set) { \
+	.flags	= _flags, \
+	.get	= _get,	\
+	.set	= _set,	\
+}
 
-	/* bytes to transfer */
-	int req_xfer;
-	/* bytes actually transferred */
-	int xferred;
+#define ide_devset_get(name, field) \
+static int get_##name(ide_drive_t *drive) \
+{ \
+	return drive->field; \
+}
 
-	/* data buffer */
-	u8 *buf;
-	/* current buffer position */
-	u8 *cur_pos;
-	int buf_size;
-	/* missing/available data on the current buffer */
-	int b_count;
+#define ide_devset_set(name, field) \
+static int set_##name(ide_drive_t *drive, int arg) \
+{ \
+	drive->field = arg; \
+	return 0; \
+}
 
-	/* the corresponding request */
-	struct request *rq;
+#define ide_devset_get_flag(name, flag) \
+static int get_##name(ide_drive_t *drive) \
+{ \
+	return !!(drive->dev_flags & flag); \
+}
 
-	unsigned long flags;
+#define ide_devset_set_flag(name, flag) \
+static int set_##name(ide_drive_t *drive, int arg) \
+{ \
+	if (arg) \
+		drive->dev_flags |= flag; \
+	else \
+		drive->dev_flags &= ~flag; \
+	return 0; \
+}
 
-	/*
-	 * those are more or less driver-specific and some of them are subject
-	 * to change/removal later.
-	 */
-	u8 pc_buf[256];
+#define __IDE_DEVSET(_name, _flags, _get, _set) \
+const struct ide_devset ide_devset_##_name = \
+	__DEVSET(_flags, _get, _set)
 
-	/* idetape only */
-	struct idetape_bh *bh;
-	char *b_data;
+#define IDE_DEVSET(_name, _flags, _get, _set) \
+static __IDE_DEVSET(_name, _flags, _get, _set)
 
-	/* idescsi only for now */
-	struct scatterlist *sg;
-	unsigned int sg_cnt;
+#define ide_devset_rw(_name, _func) \
+IDE_DEVSET(_name, 0, get_##_func, set_##_func)
 
-	struct scsi_cmnd *scsi_cmd;
-	void (*done) (struct scsi_cmnd *);
+#define ide_devset_w(_name, _func) \
+IDE_DEVSET(_name, 0, NULL, set_##_func)
 
-	unsigned long timeout;
-};
+#define ide_ext_devset_rw(_name, _func) \
+__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
+
+#define ide_ext_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);
 
 #ifdef CONFIG_IDE_PROC_FS
 /*
- * configurable drive settings
+ * /proc/ide interface
  */
 
-#define TYPE_INT	0
-#define TYPE_BYTE	1
-#define TYPE_SHORT	2
+#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)
+
+#define ide_devset_rw_flag(_name, _field) \
+ide_devset_get_flag(_name, _field); \
+ide_devset_set_flag(_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 SETTING_READ	(1 << 0)
-#define SETTING_WRITE	(1 << 1)
-#define SETTING_RW	(SETTING_READ | SETTING_WRITE)
+#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
+	.name = __stringify(_name), \
+	.setting = &ide_devset_##_name, \
+	.min = _min, \
+	.max = _max, \
+	.mulf = _mulf, \
+	.divf = _divf, \
+}
 
-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 IDE_PROC_DEVSET(_name, _min, _max) \
+__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
 
-/*
- * /proc/ide interface
- */
 typedef struct {
 	const char	*name;
 	mode_t		mode;
@@ -802,8 +1041,6 @@ 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;
 
@@ -831,41 +1068,58 @@ 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
 
+enum {
+	/* enter/exit functions */
+	IDE_DBG_FUNC =			(1 << 0),
+	/* sense key/asc handling */
+	IDE_DBG_SENSE =			(1 << 1),
+	/* packet commands handling */
+	IDE_DBG_PC =			(1 << 2),
+	/* request handling */
+	IDE_DBG_RQ =			(1 << 3),
+	/* driver probing/setup */
+	IDE_DBG_PROBE =			(1 << 4),
+};
+
+/* DRV_NAME has to be defined in the driver before using the macro below */
+#define __ide_debug_log(lvl, fmt, args...)			\
+{								\
+	if (unlikely(drive->debug_mask & lvl))			\
+		printk(KERN_INFO DRV_NAME ": " fmt, ## args);	\
+}
+
 /*
- * Power Management step value (rq->pm->pm_step).
- *
- * The step value starts at 0 (ide_pm_state_start_suspend) for a
- * suspend operation or 1000 (ide_pm_state_start_resume) for a
- * resume operation.
+ * Power Management state machine (rq->pm->pm_step).
  *
- * For each step, the core calls the subdriver start_power_step() first.
+ * For each step, the core calls ide_start_power_step() first.
  * This can return:
  *	- ide_stopped :	In this case, the core calls us back again unless
  *			step have been set to ide_power_state_completed.
  *	- ide_started :	In this case, the channel is left busy until an
  *			async event (interrupt) occurs.
- * Typically, start_power_step() will issue a taskfile request with
+ * Typically, ide_start_power_step() will issue a taskfile request with
  * do_rw_taskfile().
  *
- * Upon reception of the interrupt, the core will call complete_power_step()
+ * Upon reception of the interrupt, the core will call ide_complete_power_step()
  * with the error code if any. This routine should update the step value
  * and return. It should not start a new request. The core will call
- * start_power_step for the new step value, unless step have been set to
- * ide_power_state_completed.
- *
- * Subdrivers are expected to define their own additional power
- * steps from 1..999 for suspend and from 1001..1999 for resume,
- * other values are reserved for future use.
+ * ide_start_power_step() for the new step value, unless step have been
+ * set to IDE_PM_COMPLETED.
  */
-
 enum {
-	ide_pm_state_completed		= -1,
-	ide_pm_state_start_suspend	= 0,
-	ide_pm_state_start_resume	= 1000,
+	IDE_PM_START_SUSPEND,
+	IDE_PM_FLUSH_CACHE	= IDE_PM_START_SUSPEND,
+	IDE_PM_STANDBY,
+
+	IDE_PM_START_RESUME,
+	IDE_PM_RESTORE_PIO	= IDE_PM_START_RESUME,
+	IDE_PM_IDLE,
+	IDE_PM_RESTORE_DMA,
+
+	IDE_PM_COMPLETED,
 };
 
 /*
@@ -876,8 +1130,6 @@ 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);
@@ -887,7 +1139,8 @@ struct ide_driver_s {
 	void		(*resume)(ide_drive_t *);
 	void		(*shutdown)(ide_drive_t *);
 #ifdef CONFIG_IDE_PROC_FS
-	ide_proc_entry_t	*proc;
+	ide_proc_entry_t *		(*proc_entries)(ide_drive_t *);
+	const struct ide_proc_devset *	(*proc_devsets)(ide_drive_t *);
 #endif
 };
 
@@ -896,7 +1149,16 @@ 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;
+	const struct ide_devset *setting;
+};
+
+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 block_device *, unsigned, unsigned long);
 
 extern int ide_vlb_clk;
 extern int ide_pci_clk;
@@ -918,122 +1180,23 @@ 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);
 
+int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
+
 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);
 
-enum {
-	IDE_TFLAG_LBA48			= (1 << 0),
-	IDE_TFLAG_FLAGGED		= (1 << 2),
-	IDE_TFLAG_OUT_DATA		= (1 << 3),
-	IDE_TFLAG_OUT_HOB_FEATURE	= (1 << 4),
-	IDE_TFLAG_OUT_HOB_NSECT		= (1 << 5),
-	IDE_TFLAG_OUT_HOB_LBAL		= (1 << 6),
-	IDE_TFLAG_OUT_HOB_LBAM		= (1 << 7),
-	IDE_TFLAG_OUT_HOB_LBAH		= (1 << 8),
-	IDE_TFLAG_OUT_HOB		= IDE_TFLAG_OUT_HOB_FEATURE |
-					  IDE_TFLAG_OUT_HOB_NSECT |
-					  IDE_TFLAG_OUT_HOB_LBAL |
-					  IDE_TFLAG_OUT_HOB_LBAM |
-					  IDE_TFLAG_OUT_HOB_LBAH,
-	IDE_TFLAG_OUT_FEATURE		= (1 << 9),
-	IDE_TFLAG_OUT_NSECT		= (1 << 10),
-	IDE_TFLAG_OUT_LBAL		= (1 << 11),
-	IDE_TFLAG_OUT_LBAM		= (1 << 12),
-	IDE_TFLAG_OUT_LBAH		= (1 << 13),
-	IDE_TFLAG_OUT_TF		= IDE_TFLAG_OUT_FEATURE |
-					  IDE_TFLAG_OUT_NSECT |
-					  IDE_TFLAG_OUT_LBAL |
-					  IDE_TFLAG_OUT_LBAM |
-					  IDE_TFLAG_OUT_LBAH,
-	IDE_TFLAG_OUT_DEVICE		= (1 << 14),
-	IDE_TFLAG_WRITE			= (1 << 15),
-	IDE_TFLAG_FLAGGED_SET_IN_FLAGS	= (1 << 16),
-	IDE_TFLAG_IN_DATA		= (1 << 17),
-	IDE_TFLAG_CUSTOM_HANDLER	= (1 << 18),
-	IDE_TFLAG_DMA_PIO_FALLBACK	= (1 << 19),
-	IDE_TFLAG_IN_HOB_FEATURE	= (1 << 20),
-	IDE_TFLAG_IN_HOB_NSECT		= (1 << 21),
-	IDE_TFLAG_IN_HOB_LBAL		= (1 << 22),
-	IDE_TFLAG_IN_HOB_LBAM		= (1 << 23),
-	IDE_TFLAG_IN_HOB_LBAH		= (1 << 24),
-	IDE_TFLAG_IN_HOB_LBA		= IDE_TFLAG_IN_HOB_LBAL |
-					  IDE_TFLAG_IN_HOB_LBAM |
-					  IDE_TFLAG_IN_HOB_LBAH,
-	IDE_TFLAG_IN_HOB		= IDE_TFLAG_IN_HOB_FEATURE |
-					  IDE_TFLAG_IN_HOB_NSECT |
-					  IDE_TFLAG_IN_HOB_LBA,
-	IDE_TFLAG_IN_FEATURE		= (1 << 1),
-	IDE_TFLAG_IN_NSECT		= (1 << 25),
-	IDE_TFLAG_IN_LBAL		= (1 << 26),
-	IDE_TFLAG_IN_LBAM		= (1 << 27),
-	IDE_TFLAG_IN_LBAH		= (1 << 28),
-	IDE_TFLAG_IN_LBA		= IDE_TFLAG_IN_LBAL |
-					  IDE_TFLAG_IN_LBAM |
-					  IDE_TFLAG_IN_LBAH,
-	IDE_TFLAG_IN_TF			= IDE_TFLAG_IN_NSECT |
-					  IDE_TFLAG_IN_LBA,
-	IDE_TFLAG_IN_DEVICE		= (1 << 29),
-	IDE_TFLAG_HOB			= IDE_TFLAG_OUT_HOB |
-					  IDE_TFLAG_IN_HOB,
-	IDE_TFLAG_TF			= IDE_TFLAG_OUT_TF |
-					  IDE_TFLAG_IN_TF,
-	IDE_TFLAG_DEVICE		= IDE_TFLAG_OUT_DEVICE |
-					  IDE_TFLAG_IN_DEVICE,
-	/* force 16-bit I/O operations */
-	IDE_TFLAG_IO_16BIT		= (1 << 30),
-	/* ide_task_t was allocated using kmalloc() */
-	IDE_TFLAG_DYN			= (1 << 31),
-};
-
-struct ide_taskfile {
-	u8	hob_data;	/*  0: high data byte (for TASKFILE IOCTL) */
-
-	u8	hob_feature;	/*  1-5: additional data to support LBA48 */
-	u8	hob_nsect;
-	u8	hob_lbal;
-	u8	hob_lbam;
-	u8	hob_lbah;
-
-	u8	data;		/*  6: low data byte (for TASKFILE IOCTL) */
-
-	union {			/*  7: */
-		u8 error;	/*   read:  error */
-		u8 feature;	/*  write: feature */
-	};
-
-	u8	nsect;		/*  8: number of sectors */
-	u8	lbal;		/*  9: LBA low */
-	u8	lbam;		/* 10: LBA mid */
-	u8	lbah;		/* 11: LBA high */
-
-	u8	device;		/* 12: device select */
-
-	union {			/* 13: */
-		u8 status;	/*  read: status  */
-		u8 command;	/* write: command */
-	};
-};
-
-typedef struct ide_task_s {
-	union {
-		struct ide_taskfile	tf;
-		u8			tf_array[14];
-	};
-	u32			tf_flags;
-	int			data_phase;
-	struct request		*rq;		/* copy of request */
-	void			*special;	/* valid_t generally */
-} ide_task_t;
-
 void ide_tf_dump(const char *, struct ide_taskfile *);
 
 void ide_exec_command(ide_hwif_t *, u8);
@@ -1049,6 +1212,8 @@ void ide_tf_read(ide_drive_t *, ide_task_t *);
 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
 
+int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
+
 extern void SELECT_DRIVE(ide_drive_t *);
 void SELECT_MASK(ide_drive_t *, int);
 
@@ -1059,16 +1224,46 @@ extern int drive_is_ready(ide_drive_t *);
 
 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
 
-ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
-	ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
-	void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
-	void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *),
-	void (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int,
-			   int));
-ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *,
-				ide_handler_t *, unsigned int, ide_expiry_t *);
-ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *,
-			     ide_handler_t *, unsigned int, ide_expiry_t *);
+int ide_check_atapi_device(ide_drive_t *, const char *);
+
+void ide_init_pc(struct ide_atapi_pc *);
+
+/* Disk head parking */
+extern wait_queue_head_t ide_park_wq;
+ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
+		      char *buf);
+ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
+		       const char *buf, size_t len);
+
+/*
+ * Special requests for ide-tape block device strategy routine.
+ *
+ * In order to service a character device command, we add special requests to
+ * the tail of our block device request queue and wait for their completion.
+ */
+enum {
+	REQ_IDETAPE_PC1		= (1 << 0), /* packet command (first stage) */
+	REQ_IDETAPE_PC2		= (1 << 1), /* packet command (second stage) */
+	REQ_IDETAPE_READ	= (1 << 2),
+	REQ_IDETAPE_WRITE	= (1 << 3),
+};
+
+int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
+
+int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
+int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
+int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
+void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
+void ide_retry_pc(ide_drive_t *, struct gendisk *);
+
+static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
+{
+	return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
+}
+
+int ide_scsi_expiry(ide_drive_t *);
+
+ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
 
 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
 
@@ -1078,8 +1273,6 @@ int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
 
 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
-int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
-int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
 
 extern int ide_driveid_update(ide_drive_t *);
 extern int ide_config_drive_speed(ide_drive_t *, u8);
@@ -1090,7 +1283,6 @@ 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 *);
@@ -1227,6 +1419,14 @@ int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
 		     const struct ide_port_info *, void *);
 void ide_pci_remove(struct pci_dev *);
 
+#ifdef CONFIG_PM
+int ide_pci_suspend(struct pci_dev *, pm_message_t);
+int ide_pci_resume(struct pci_dev *);
+#else
+#define ide_pci_suspend NULL
+#define ide_pci_resume NULL
+#endif
+
 void ide_map_sg(ide_drive_t *, struct request *);
 void ide_init_sg_cmd(ide_drive_t *, struct request *);
 
@@ -1238,9 +1438,10 @@ 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_good_drive(ide_drive_t *);
 int __ide_dma_bad_drive(ide_drive_t *);
 int ide_id_dma_bug(ide_drive_t *);
 
@@ -1258,25 +1459,29 @@ int ide_set_dma(ide_drive_t *);
 void ide_check_dma_crc(ide_drive_t *);
 ide_startstop_t ide_dma_intr(ide_drive_t *);
 
+int ide_allocate_dma_engine(ide_hwif_t *);
+void ide_release_dma_engine(ide_hwif_t *);
+
 int ide_build_sglist(ide_drive_t *, struct request *);
 void ide_destroy_dmatable(ide_drive_t *);
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
+int config_drive_for_dma(ide_drive_t *);
 extern int ide_build_dmatable(ide_drive_t *, struct request *);
-int ide_allocate_dma_engine(ide_hwif_t *);
-void ide_release_dma_engine(ide_hwif_t *);
-
 void ide_dma_host_set(ide_drive_t *, int);
 extern int ide_dma_setup(ide_drive_t *);
 void ide_dma_exec_cmd(ide_drive_t *, u8);
 extern void ide_dma_start(ide_drive_t *);
-extern int __ide_dma_end(ide_drive_t *);
+int ide_dma_end(ide_drive_t *);
 int ide_dma_test_irq(ide_drive_t *);
-extern void ide_dma_lost_irq(ide_drive_t *);
-extern void ide_dma_timeout(ide_drive_t *);
 extern const struct ide_dma_ops sff_dma_ops;
+#else
+static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
 
+void ide_dma_lost_irq(ide_drive_t *);
+void ide_dma_timeout(ide_drive_t *);
+
 #else
 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
@@ -1287,11 +1492,8 @@ static inline void ide_dma_on(ide_drive_t *drive) { ; }
 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
-#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
-#endif
+#endif /* CONFIG_BLK_DEV_IDEDMA */
 
 #ifdef CONFIG_BLK_DEV_IDEACPI
 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
@@ -1319,7 +1521,6 @@ void ide_undecoded_slave(ide_drive_t *);
 
 void ide_port_apply_params(ide_hwif_t *);
 
-struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
 void ide_host_free(struct ide_host *);
 int ide_host_register(struct ide_host *, const struct ide_port_info *,
@@ -1345,24 +1546,6 @@ 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)
-{
-	return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
-}
-
-static inline int ide_dev_is_sata(struct hd_driveid *id)
-{
-	/*
-	 * See if word 93 is 0 AND drive is at least ATA-5 compatible
-	 * verifying that word 80 by casting it to a signed type --
-	 * 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)
-		return 1;
-	return 0;
-}
-
 u64 ide_get_lba_addr(struct ide_taskfile *, int);
 u8 ide_dump_status(ide_drive_t *, const char *, u8);
 
@@ -1434,13 +1617,6 @@ extern struct mutex ide_cfg_mtx;
 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)
-
-/* 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)
-
 static inline void ide_dump_identify(u8 *id)
 {
 	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
@@ -1451,10 +1627,10 @@ static inline int hwif_to_node(ide_hwif_t *hwif)
 	return hwif->dev ? dev_to_node(hwif->dev) : -1;
 }
 
-static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
+static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
 
-	return &hwif->drives[(drive->dn ^ 1) & 1];
+	return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
 }
 #endif /* _IDE_H */