Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: (50 commits)
  ide: remove inclusion of non-existent io_trace.h
  ide-disk: add get_smart_data() helper
  ide: fix ->data_phase in taskfile_load_raw()
  ide: check drive->using_dma in flagged_taskfile()
  ide: check ->dma_setup() return value in flagged_taskfile()
  dtc2278: note on docs
  qd65xx: remove pointless qd_{read,write}_reg() (take 2)
  ide: PCI BMDMA initialization fixes (take 2)
  ide: remove stale comments from ide-taskfile.c
  ide: remove dead code from ide_driveid_update()
  ide: use __ide_end_request() in ide_end_dequeued_request()
  ide: enhance ide_setup_pci_noise()
  cs5530: remove needless ide_lock taking
  ide: take ide_lock for prefetch disable/enable in do_special()
  ht6560b: fix deadlock on error handling
  cmd640: fix deadlock on error handling
  slc90e66: fix deadlock on error handling
  opti621: fix deadlock on error handling
  qd65xx: fix deadlock on error handling
  dtc2278: fix deadlock on error handling
  ...

1 files changed, 33 insertions, 76 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 19db0a4ae44..2e4b8dd03cf 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -192,22 +192,20 @@ typedef unsigned char	byte;	/* used everywhere */
 struct hwif_s;
 typedef int (ide_ack_intr_t)(struct hwif_s *);
 
-#ifndef NO_DMA
-#define NO_DMA  255
-#endif
-
 /*
  * hwif_chipset_t is used to keep track of the specific hardware
  * chipset used by each IDE interface, if known.
  */
-typedef enum {	ide_unknown,	ide_generic,	ide_pci,
+enum {		ide_unknown,	ide_generic,	ide_pci,
 		ide_cmd640,	ide_dtc2278,	ide_ali14xx,
 		ide_qd65xx,	ide_umc8672,	ide_ht6560b,
 		ide_rz1000,	ide_trm290,
 		ide_cmd646,	ide_cy82c693,	ide_4drives,
 		ide_pmac,	ide_etrax100,	ide_acorn,
 		ide_au1xxx, ide_forced
-} hwif_chipset_t;
+};
+
+typedef u8 hwif_chipset_t;
 
 /*
  * Structure to hold all information about the location of this port
@@ -215,22 +213,16 @@ typedef enum {	ide_unknown,	ide_generic,	ide_pci,
 typedef struct hw_regs_s {
 	unsigned long	io_ports[IDE_NR_PORTS];	/* task file registers */
 	int		irq;			/* our irq number */
-	int		dma;			/* our dma entry */
 	ide_ack_intr_t	*ack_intr;		/* acknowledge interrupt */
 	hwif_chipset_t  chipset;
 	struct device	*dev;
 } hw_regs_t;
 
-/*
- * Register new hardware with ide
- */
-int ide_register_hw(hw_regs_t *, int, struct hwif_s **);
-int ide_register_hw_with_fixup(hw_regs_t *, int, struct hwif_s **,
-			       void (*)(struct hwif_s *));
+struct hwif_s * ide_find_port(unsigned long);
+
+int ide_register_hw(hw_regs_t *, void (*)(struct hwif_s *), int,
+		    struct hwif_s **);
 
-/*
- * Set up hw_regs_t structure before calling ide_register_hw (optional)
- */
 void ide_setup_ports(	hw_regs_t *hw,
 			unsigned long base,
 			int *offsets,
@@ -268,11 +260,7 @@ static inline void ide_std_init_ports(hw_regs_t *hw,
 # define ide_init_default_irq(base)	(0)
 #endif
 
-/*
- * ide_init_hwif_ports() is OBSOLETE and will be removed in 2.7 series.
- * New ports shouldn't define IDE_ARCH_OBSOLETE_INIT in <asm/ide.h>.
- */
-#ifdef IDE_ARCH_OBSOLETE_INIT
+#ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
 static inline void ide_init_hwif_ports(hw_regs_t *hw,
 				       unsigned long io_addr,
 				       unsigned long ctl_addr,
@@ -302,7 +290,7 @@ static inline void ide_init_hwif_ports(hw_regs_t *hw,
 	if (io_addr || ctl_addr)
 		printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
 }
-#endif /* IDE_ARCH_OBSOLETE_INIT */
+#endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
 
 /* Currently only m68k, apus and m8xx need it */
 #ifndef IDE_ARCH_ACK_INTR
@@ -363,7 +351,6 @@ typedef union {
  * ATA DATA Register Special.
  * ATA NSECTOR Count Register().
  * ATAPI Byte Count Register.
- * Channel index ordering pairs.
  */
 typedef union {
 	unsigned all			:16;
@@ -378,7 +365,7 @@ typedef union {
 #error "Please fix <asm/byteorder.h>"
 #endif
 	} b;
-} ata_nsector_t, ata_data_t, atapi_bcount_t, ata_index_t;
+} ata_nsector_t, ata_data_t, atapi_bcount_t;
 
 /*
  * ATA-IDE Select Register, aka Device-Head
@@ -657,7 +644,7 @@ typedef struct ide_drive_s {
     ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
 #define IDE_CHIPSET_IS_PCI(c)	((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
 
-struct ide_pci_device_s;
+struct ide_port_info;
 
 typedef struct hwif_s {
 	struct hwif_s *next;		/* for linked-list in ide_hwgroup_t */
@@ -672,7 +659,6 @@ typedef struct hwif_s {
 	unsigned long	sata_scr[SATA_NR_PORTS];
 	unsigned long	sata_misc[SATA_NR_PORTS];
 
-	hw_regs_t	hw;		/* Hardware info */
 	ide_drive_t	drives[MAX_DRIVES];	/* drive info */
 
 	u8 major;	/* our major number */
@@ -694,7 +680,9 @@ typedef struct hwif_s {
 	hwif_chipset_t chipset;	/* sub-module for tuning.. */
 
 	struct pci_dev  *pci_dev;	/* for pci chipsets */
-	struct ide_pci_device_s	*cds;	/* chipset device struct */
+	const struct ide_port_info *cds;	/* chipset device struct */
+
+	ide_ack_intr_t *ack_intr;
 
 	void (*rw_disk)(ide_drive_t *, struct request *);
 
@@ -725,6 +713,8 @@ typedef struct hwif_s {
 	u8 (*mdma_filter)(ide_drive_t *);
 	u8 (*udma_filter)(ide_drive_t *);
 
+	void (*fixup)(struct hwif_s *);
+
 	void (*ata_input_data)(ide_drive_t *, void *, u32);
 	void (*ata_output_data)(ide_drive_t *, void *, u32);
 
@@ -841,8 +831,6 @@ typedef struct hwgroup_s {
 
 		/* for pci chipsets */
 	struct pci_dev *pci_dev;
-		/* chipset device struct */
-	struct ide_pci_device_s *cds;
 
 		/* current request */
 	struct request *rq;
@@ -1030,36 +1018,16 @@ extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
 			     int uptodate, int nr_sectors);
 
-/*
- * This is used on exit from the driver to designate the next irq handler
- * and also to start the safety timer.
- */
 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
 
-/*
- * This is used on exit from the driver to designate the next irq handler
- * and start the safety time safely and atomically from the IRQ handler
- * with respect to the command issue (which it also does)
- */
 extern void ide_execute_command(ide_drive_t *, task_ioreg_t cmd, ide_handler_t *, unsigned int, ide_expiry_t *);
 
 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
 
-/*
- * ide_error() takes action based on the error returned by the controller.
- * The caller should return immediately after invoking this.
- *
- * (drive, msg, status)
- */
 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
 
 ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
 
-/*
- * Abort a running command on the controller triggering the abort
- * from a host side, non error situation
- * (drive, msg)
- */
 extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
 
 extern void ide_fix_driveid(struct hd_driveid *);
@@ -1075,15 +1043,8 @@ extern void ide_fixstring(u8 *, const int, const int);
 
 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
 
-/*
- * Start a reset operation for an IDE interface.
- * The caller should return immediately after invoking this.
- */
 extern ide_startstop_t ide_do_reset (ide_drive_t *);
 
-/*
- * This function is intended to be used prior to invoking ide_do_drive_cmd().
- */
 extern void ide_init_drive_cmd (struct request *rq);
 
 /*
@@ -1098,13 +1059,6 @@ typedef enum {
 
 extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
 
-/*
- * Clean up after success/failure of an explicit drive cmd.
- * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD).
- * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_TASK_MASK).
- *
- * (ide_drive_t *drive, u8 stat, u8 err)
- */
 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
 
 /*
@@ -1177,10 +1131,6 @@ extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
 
 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
 
-/*
- * ide_stall_queue() can be used by a drive to give excess bandwidth back
- * to the hwgroup by sleeping for timeout jiffies.
- */
 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
 
 extern int ide_spin_wait_hwgroup(ide_drive_t *);
@@ -1200,8 +1150,8 @@ extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *o
 #define ide_pci_register_driver(d) pci_register_driver(d)
 #endif
 
-void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, ata_index_t *);
-extern void ide_setup_pci_noise (struct pci_dev *dev, struct ide_pci_device_s *d);
+void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
+void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
 
 extern void default_hwif_iops(ide_hwif_t *);
 extern void default_hwif_mmiops(ide_hwif_t *);
@@ -1261,6 +1211,14 @@ enum {
 	IDE_HFLAG_SERIALIZE		= (1 << 20),
 	/* use legacy IRQs */
 	IDE_HFLAG_LEGACY_IRQS		= (1 << 21),
+	/* force use of legacy IRQs */
+	IDE_HFLAG_FORCE_LEGACY_IRQS	= (1 << 22),
+	/* limit LBA48 requests to 256 sectors */
+	IDE_HFLAG_RQSIZE_256		= (1 << 23),
+	/* use 32-bit I/O ops */
+	IDE_HFLAG_IO_32BIT		= (1 << 24),
+	/* unmask IRQs */
+	IDE_HFLAG_UNMASK_IRQS		= (1 << 25),
 };
 
 #ifdef CONFIG_BLK_DEV_OFFBOARD
@@ -1269,7 +1227,7 @@ enum {
 # define IDE_HFLAG_OFF_BOARD	0
 #endif
 
-typedef struct ide_pci_device_s {
+struct ide_port_info {
 	char			*name;
 	unsigned int		(*init_chipset)(struct pci_dev *, const char *);
 	void			(*init_iops)(ide_hwif_t *);
@@ -1277,17 +1235,17 @@ typedef struct ide_pci_device_s {
 	void			(*init_dma)(ide_hwif_t *, unsigned long);
 	void			(*fixup)(ide_hwif_t *);
 	ide_pci_enablebit_t	enablebits[2];
+	hwif_chipset_t		chipset;
 	unsigned int		extra;
-	struct ide_pci_device_s	*next;
 	u32			host_flags;
 	u8			pio_mask;
 	u8			swdma_mask;
 	u8			mwdma_mask;
 	u8			udma_mask;
-} ide_pci_device_t;
+};
 
-extern int ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);
-extern int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_device_t *);
+int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
+int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
 
 void ide_map_sg(ide_drive_t *, struct request *);
 void ide_init_sg_cmd(ide_drive_t *, struct request *);
@@ -1370,8 +1328,7 @@ void ide_unregister_region(struct gendisk *);
 
 void ide_undecoded_slave(ide_hwif_t *);
 
-int probe_hwif_init_with_fixup(ide_hwif_t *, void (*)(ide_hwif_t *));
-extern int probe_hwif_init(ide_hwif_t *);
+int ide_device_add(u8 idx[4]);
 
 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
 {