4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
9 #include <linux/config.h>
10 #include <linux/init.h>
11 #include <linux/ioport.h>
12 #include <linux/hdreg.h>
13 #include <linux/hdsmart.h>
14 #include <linux/blkdev.h>
15 #include <linux/proc_fs.h>
16 #include <linux/interrupt.h>
17 #include <linux/bitops.h>
18 #include <linux/bio.h>
19 #include <linux/device.h>
20 #include <linux/pci.h>
21 #include <asm/byteorder.h>
22 #include <asm/system.h>
24 #include <asm/semaphore.h>
27 * This is the multiple IDE interface driver, as evolved from hd.c.
28 * It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15).
29 * There can be up to two drives per interface, as per the ATA-2 spec.
31 * Primary i/f: ide0: major=3; (hda) minor=0; (hdb) minor=64
32 * Secondary i/f: ide1: major=22; (hdc or hd1a) minor=0; (hdd or hd1b) minor=64
33 * Tertiary i/f: ide2: major=33; (hde) minor=0; (hdf) minor=64
34 * Quaternary i/f: ide3: major=34; (hdg) minor=0; (hdh) minor=64
37 /******************************************************************************
38 * IDE driver configuration options (play with these as desired):
40 * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary
42 #define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */
44 #ifndef SUPPORT_SLOW_DATA_PORTS /* 1 to support slow data ports */
45 #define SUPPORT_SLOW_DATA_PORTS 1 /* 0 to reduce kernel size */
47 #ifndef SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */
48 #define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */
50 #ifndef OK_TO_RESET_CONTROLLER /* 1 needed for good error recovery */
51 #define OK_TO_RESET_CONTROLLER 1 /* 0 for use with AH2372A/B interface */
54 #ifndef DISABLE_IRQ_NOSYNC
55 #define DISABLE_IRQ_NOSYNC 0
59 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
63 #define IDE_NO_IRQ (-1)
66 * "No user-serviceable parts" beyond this point :)
67 *****************************************************************************/
69 typedef unsigned char byte
; /* used everywhere */
72 * Probably not wise to fiddle with these
74 #define ERROR_MAX 8 /* Max read/write errors per sector */
75 #define ERROR_RESET 3 /* Reset controller every 4th retry */
76 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
81 #define IDE_TUNE_NOAUTO 2
82 #define IDE_TUNE_AUTO 1
83 #define IDE_TUNE_DEFAULT 0
89 #define DMA_PIO_RETRY 1 /* retrying in PIO */
91 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
92 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
95 * Definitions for accessing IDE controller registers
97 #define IDE_NR_PORTS (10)
99 #define IDE_DATA_OFFSET (0)
100 #define IDE_ERROR_OFFSET (1)
101 #define IDE_NSECTOR_OFFSET (2)
102 #define IDE_SECTOR_OFFSET (3)
103 #define IDE_LCYL_OFFSET (4)
104 #define IDE_HCYL_OFFSET (5)
105 #define IDE_SELECT_OFFSET (6)
106 #define IDE_STATUS_OFFSET (7)
107 #define IDE_CONTROL_OFFSET (8)
108 #define IDE_IRQ_OFFSET (9)
110 #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
111 #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
113 #define IDE_CONTROL_OFFSET_HOB (7)
115 #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
116 #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
117 #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
118 #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
119 #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
120 #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
121 #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
122 #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
123 #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
124 #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
126 #define IDE_FEATURE_REG IDE_ERROR_REG
127 #define IDE_COMMAND_REG IDE_STATUS_REG
128 #define IDE_ALTSTATUS_REG IDE_CONTROL_REG
129 #define IDE_IREASON_REG IDE_NSECTOR_REG
130 #define IDE_BCOUNTL_REG IDE_LCYL_REG
131 #define IDE_BCOUNTH_REG IDE_HCYL_REG
133 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
134 #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
135 #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
136 #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
137 #define DRIVE_READY (READY_STAT | SEEK_STAT)
138 #define DATA_READY (DRQ_STAT)
140 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
142 #define SATA_NR_PORTS (3) /* 16 possible ?? */
144 #define SATA_STATUS_OFFSET (0)
145 #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
146 #define SATA_ERROR_OFFSET (1)
147 #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
148 #define SATA_CONTROL_OFFSET (2)
149 #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
151 #define SATA_MISC_OFFSET (0)
152 #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
153 #define SATA_PHY_OFFSET (1)
154 #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
155 #define SATA_IEN_OFFSET (2)
156 #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
159 * Our Physical Region Descriptor (PRD) table should be large enough
160 * to handle the biggest I/O request we are likely to see. Since requests
161 * can have no more than 256 sectors, and since the typical blocksize is
162 * two or more sectors, we could get by with a limit of 128 entries here for
163 * the usual worst case. Most requests seem to include some contiguous blocks,
164 * further reducing the number of table entries required.
166 * The driver reverts to PIO mode for individual requests that exceed
167 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
168 * 100% of all crazy scenarios here is not necessary.
170 * As it turns out though, we must allocate a full 4KB page for this,
171 * so the two PRD tables (ide0 & ide1) will each get half of that,
172 * allowing each to have about 256 entries (8 bytes each) from this.
175 #define PRD_ENTRIES 256
178 * Some more useful definitions
180 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
181 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
182 #define SECTOR_SIZE 512
183 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
184 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
187 * Timeouts for various operations:
189 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
190 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
191 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
192 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
193 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
194 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
196 #define HOST(hwif,chipset) \
198 return ((hwif)->chipset == chipset) ? 1 : 0; \
202 * Check for an interrupt and acknowledge the interrupt status
205 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
212 * hwif_chipset_t is used to keep track of the specific hardware
213 * chipset used by each IDE interface, if known.
215 typedef enum { ide_unknown
, ide_generic
, ide_pci
,
216 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
217 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
218 ide_rz1000
, ide_trm290
,
219 ide_cmd646
, ide_cy82c693
, ide_4drives
,
220 ide_pmac
, ide_etrax100
, ide_acorn
,
221 ide_au1xxx
, ide_forced
225 * Structure to hold all information about the location of this port
227 typedef struct hw_regs_s
{
228 unsigned long io_ports
[IDE_NR_PORTS
]; /* task file registers */
229 int irq
; /* our irq number */
230 int dma
; /* our dma entry */
231 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
232 hwif_chipset_t chipset
;
237 * Register new hardware with ide
239 int ide_register_hw(hw_regs_t
*hw
, struct hwif_s
**hwifp
);
240 int ide_register_hw_with_fixup(hw_regs_t
*, struct hwif_s
**, void (*)(struct hwif_s
*));
243 * Set up hw_regs_t structure before calling ide_register_hw (optional)
245 void ide_setup_ports( hw_regs_t
*hw
,
250 ide_ack_intr_t
*ack_intr
,
256 static inline void ide_std_init_ports(hw_regs_t
*hw
,
257 unsigned long io_addr
,
258 unsigned long ctl_addr
)
262 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
263 hw
->io_ports
[i
] = io_addr
++;
265 hw
->io_ports
[IDE_CONTROL_OFFSET
] = ctl_addr
;
271 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
274 /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
275 #ifndef IDE_ARCH_OBSOLETE_DEFAULTS
276 # define ide_default_io_base(index) (0)
277 # define ide_default_irq(base) (0)
278 # define ide_init_default_irq(base) (0)
282 * ide_init_hwif_ports() is OBSOLETE and will be removed in 2.7 series.
283 * New ports shouldn't define IDE_ARCH_OBSOLETE_INIT in <asm/ide.h>.
285 #ifdef IDE_ARCH_OBSOLETE_INIT
286 static inline void ide_init_hwif_ports(hw_regs_t
*hw
,
287 unsigned long io_addr
,
288 unsigned long ctl_addr
,
292 ide_std_init_ports(hw
, io_addr
, ide_default_io_ctl(io_addr
));
294 ide_std_init_ports(hw
, io_addr
, ctl_addr
);
299 hw
->io_ports
[IDE_IRQ_OFFSET
] = 0;
302 if (ppc_ide_md
.ide_init_hwif
)
303 ppc_ide_md
.ide_init_hwif(hw
, io_addr
, ctl_addr
, irq
);
307 static inline void ide_init_hwif_ports(hw_regs_t
*hw
,
308 unsigned long io_addr
,
309 unsigned long ctl_addr
,
312 if (io_addr
|| ctl_addr
)
313 printk(KERN_WARNING
"%s: must not be called\n", __FUNCTION__
);
315 #endif /* IDE_ARCH_OBSOLETE_INIT */
317 /* Currently only m68k, apus and m8xx need it */
318 #ifndef IDE_ARCH_ACK_INTR
319 # define ide_ack_intr(hwif) (1)
322 /* Currently only Atari needs it */
323 #ifndef IDE_ARCH_LOCK
324 # define ide_release_lock() do {} while (0)
325 # define ide_get_lock(hdlr, data) do {} while (0)
326 #endif /* IDE_ARCH_LOCK */
329 * Now for the data we need to maintain per-drive: ide_drive_t
332 #define ide_scsi 0x21
333 #define ide_disk 0x20
334 #define ide_optical 0x7
335 #define ide_cdrom 0x5
337 #define ide_floppy 0x0
340 * Special Driver Flags
342 * set_geometry : respecify drive geometry
343 * recalibrate : seek to cyl 0
344 * set_multmode : set multmode count
345 * set_tune : tune interface for drive
346 * serviced : service command
352 #if defined(__LITTLE_ENDIAN_BITFIELD)
353 unsigned set_geometry
: 1;
354 unsigned recalibrate
: 1;
355 unsigned set_multmode
: 1;
356 unsigned set_tune
: 1;
357 unsigned serviced
: 1;
358 unsigned reserved
: 3;
359 #elif defined(__BIG_ENDIAN_BITFIELD)
360 unsigned reserved
: 3;
361 unsigned serviced
: 1;
362 unsigned set_tune
: 1;
363 unsigned set_multmode
: 1;
364 unsigned recalibrate
: 1;
365 unsigned set_geometry
: 1;
367 #error "Please fix <asm/byteorder.h>"
373 * ATA DATA Register Special.
374 * ATA NSECTOR Count Register().
375 * ATAPI Byte Count Register.
376 * Channel index ordering pairs.
381 #if defined(__LITTLE_ENDIAN_BITFIELD)
382 unsigned low
:8; /* LSB */
383 unsigned high
:8; /* MSB */
384 #elif defined(__BIG_ENDIAN_BITFIELD)
385 unsigned high
:8; /* MSB */
386 unsigned low
:8; /* LSB */
388 #error "Please fix <asm/byteorder.h>"
391 } ata_nsector_t
, ata_data_t
, atapi_bcount_t
, ata_index_t
;
394 * ATA-IDE Error Register
396 * mark : Bad address mark
397 * tzero : Couldn't find track 0
398 * abrt : Aborted Command
399 * mcr : Media Change Request
400 * id : ID field not found
401 * mce : Media Change Event
402 * ecc : Uncorrectable ECC error
408 #if defined(__LITTLE_ENDIAN_BITFIELD)
417 #elif defined(__BIG_ENDIAN_BITFIELD)
427 #error "Please fix <asm/byteorder.h>"
433 * ATA-IDE Select Register, aka Device-Head
435 * head : always zeros here
436 * unit : drive select number: 0/1
438 * lba : using LBA instead of CHS
444 #if defined(__LITTLE_ENDIAN_BITFIELD)
450 #elif defined(__BIG_ENDIAN_BITFIELD)
457 #error "Please fix <asm/byteorder.h>"
460 } select_t
, ata_select_t
;
463 * The ATA-IDE Status Register.
464 * The ATAPI Status Register.
466 * check : Error occurred
468 * corr : Correctable error occurred
469 * drq : Data is request by the device
470 * dsc : Disk Seek Complete : ata
471 * : Media access command finished : atapi
472 * df : Device Fault : ata
474 * drdy : Ready, Command Mode Capable : ata
475 * : Ignored for ATAPI commands : atapi
477 * : The device has access to the command block
482 #if defined(__LITTLE_ENDIAN_BITFIELD)
491 #elif defined(__BIG_ENDIAN_BITFIELD)
501 #error "Please fix <asm/byteorder.h>"
504 } ata_status_t
, atapi_status_t
;
507 * ATA-IDE Control Register
509 * bit0 : Should be set to zero
510 * nIEN : device INTRQ to host
511 * SRST : host soft reset bit
512 * bit3 : ATA-2 thingy, Should be set to 1
513 * reserved456 : Reserved
514 * HOB : 48-bit address ordering, High Ordered Bit
519 #if defined(__LITTLE_ENDIAN_BITFIELD)
524 unsigned reserved456
: 3;
526 #elif defined(__BIG_ENDIAN_BITFIELD)
528 unsigned reserved456
: 3;
534 #error "Please fix <asm/byteorder.h>"
540 * ATAPI Feature Register
542 * dma : Using DMA or PIO
543 * reserved321 : Reserved
544 * reserved654 : Reserved (Tag Type)
545 * reserved7 : Reserved
550 #if defined(__LITTLE_ENDIAN_BITFIELD)
552 unsigned reserved321
:3;
553 unsigned reserved654
:3;
554 unsigned reserved7
:1;
555 #elif defined(__BIG_ENDIAN_BITFIELD)
556 unsigned reserved7
:1;
557 unsigned reserved654
:3;
558 unsigned reserved321
:3;
561 #error "Please fix <asm/byteorder.h>"
567 * ATAPI Interrupt Reason Register.
569 * cod : Information transferred is command (1) or data (0)
570 * io : The device requests us to read (1) or write (0)
571 * reserved : Reserved
576 #if defined(__LITTLE_ENDIAN_BITFIELD)
579 unsigned reserved
:6;
580 #elif defined(__BIG_ENDIAN_BITFIELD)
581 unsigned reserved
:6;
585 #error "Please fix <asm/byteorder.h>"
591 * The ATAPI error register.
593 * ili : Illegal Length Indication
594 * eom : End Of Media Detected
595 * abrt : Aborted command - As defined by ATA
596 * mcr : Media Change Requested - As defined by ATA
597 * sense_key : Sense key of the last failed packet command
602 #if defined(__LITTLE_ENDIAN_BITFIELD)
607 unsigned sense_key
:4;
608 #elif defined(__BIG_ENDIAN_BITFIELD)
609 unsigned sense_key
:4;
615 #error "Please fix <asm/byteorder.h>"
621 * ATAPI floppy Drive Select Register
623 * sam_lun : Logical unit number
624 * reserved3 : Reserved
625 * drv : The responding drive will be drive 0 (0) or drive 1 (1)
626 * one5 : Should be set to 1
627 * reserved6 : Reserved
628 * one7 : Should be set to 1
633 #if defined(__LITTLE_ENDIAN_BITFIELD)
635 unsigned reserved3
:1;
638 unsigned reserved6
:1;
640 #elif defined(__BIG_ENDIAN_BITFIELD)
642 unsigned reserved6
:1;
645 unsigned reserved3
:1;
648 #error "Please fix <asm/byteorder.h>"
654 * Status returned from various ide_ functions
657 ide_stopped
, /* no drive operation was started */
658 ide_started
, /* a drive operation was started, handler was set */
662 struct ide_settings_s
;
664 typedef struct ide_drive_s
{
665 char name
[4]; /* drive name, such as "hda" */
666 char driver_req
[10]; /* requests specific driver */
668 request_queue_t
*queue
; /* request queue */
670 struct request
*rq
; /* current request */
671 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
672 void *driver_data
; /* extra driver data */
673 struct hd_driveid
*id
; /* drive model identification info */
674 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
675 struct ide_settings_s
*settings
;/* /proc/ide/ drive settings */
676 char devfs_name
[64]; /* devfs crap */
678 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
680 unsigned long sleep
; /* sleep until this time */
681 unsigned long service_start
; /* time we started last request */
682 unsigned long service_time
; /* service time of last request */
683 unsigned long timeout
; /* max time to wait for irq */
685 special_t special
; /* special action flags */
686 select_t select
; /* basic drive/head select reg value */
688 u8 keep_settings
; /* restore settings after drive reset */
689 u8 autodma
; /* device can safely use dma on host */
690 u8 using_dma
; /* disk is using dma for read/write */
691 u8 retry_pio
; /* retrying dma capable host in pio */
692 u8 state
; /* retry state */
693 u8 waiting_for_dma
; /* dma currently in progress */
694 u8 unmask
; /* okay to unmask other irqs */
695 u8 bswap
; /* byte swap data */
696 u8 dsc_overlap
; /* DSC overlap */
697 u8 nice1
; /* give potential excess bandwidth */
699 unsigned present
: 1; /* drive is physically present */
700 unsigned dead
: 1; /* device ejected hint */
701 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
702 unsigned noprobe
: 1; /* from: hdx=noprobe */
703 unsigned removable
: 1; /* 1 if need to do check_media_change */
704 unsigned attach
: 1; /* needed for removable devices */
705 unsigned is_flash
: 1; /* 1 if probed as flash */
706 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
707 unsigned no_unmask
: 1; /* disallow setting unmask bit */
708 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
709 unsigned atapi_overlap
: 1; /* ATAPI overlap (not supported) */
710 unsigned nice0
: 1; /* give obvious excess bandwidth */
711 unsigned nice2
: 1; /* give a share in our own bandwidth */
712 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
713 unsigned autotune
: 2; /* 0=default, 1=autotune, 2=noautotune */
714 unsigned remap_0_to_1
: 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
715 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
716 unsigned vdma
: 1; /* 1=doing PIO over DMA 0=doing normal DMA */
717 unsigned addressing
; /* : 3;
720 * 2=48-bit doing 28-bit
723 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
724 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
725 unsigned post_reset
: 1;
727 u8 quirk_list
; /* considered quirky, set for a specific host */
728 u8 init_speed
; /* transfer rate set at boot */
729 u8 pio_speed
; /* unused by core, used by some drivers for fallback from DMA */
730 u8 current_speed
; /* current transfer rate set */
731 u8 dn
; /* now wide spread use */
732 u8 wcache
; /* status of write cache */
733 u8 acoustic
; /* acoustic management */
734 u8 media
; /* disk, cdrom, tape, floppy, ... */
735 u8 ctl
; /* "normal" value for IDE_CONTROL_REG */
736 u8 ready_stat
; /* min status value for drive ready */
737 u8 mult_count
; /* current multiple sector setting */
738 u8 mult_req
; /* requested multiple sector setting */
739 u8 tune_req
; /* requested drive tuning setting */
740 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
741 u8 bad_wstat
; /* used for ignoring WRERR_STAT */
742 u8 nowerr
; /* used for ignoring WRERR_STAT */
743 u8 sect0
; /* offset of first sector for DM6:DDO */
744 u8 head
; /* "real" number of heads */
745 u8 sect
; /* "real" sectors per track */
746 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
747 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
749 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
750 unsigned int cyl
; /* "real" number of cyls */
751 unsigned int drive_data
; /* use by tuneproc/selectproc */
752 unsigned int usage
; /* current "open()" count for drive */
753 unsigned int failures
; /* current failure count */
754 unsigned int max_failures
; /* maximum allowed failure count */
756 u64 capacity64
; /* total number of sectors */
758 int lun
; /* logical unit */
759 int crc_count
; /* crc counter to reduce drive speed */
760 struct list_head list
;
761 struct device gendev
;
762 struct semaphore gendev_rel_sem
; /* to deal with device release() */
765 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
767 #define IDE_CHIPSET_PCI_MASK \
768 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
769 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
771 struct ide_pci_device_s
;
773 typedef struct hwif_s
{
774 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
775 struct hwif_s
*mate
; /* other hwif from same PCI chip */
776 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
777 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
779 char name
[6]; /* name of interface, eg. "ide0" */
781 /* task file registers for pata and sata */
782 unsigned long io_ports
[IDE_NR_PORTS
];
783 unsigned long sata_scr
[SATA_NR_PORTS
];
784 unsigned long sata_misc
[SATA_NR_PORTS
];
786 hw_regs_t hw
; /* Hardware info */
787 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
789 u8 major
; /* our major number */
790 u8 index
; /* 0 for ide0; 1 for ide1; ... */
791 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
792 u8 straight8
; /* Alan's straight 8 check */
793 u8 bus_state
; /* power state of the IDE bus */
795 u8 atapi_dma
; /* host supports atapi_dma */
800 hwif_chipset_t chipset
; /* sub-module for tuning.. */
802 struct pci_dev
*pci_dev
; /* for pci chipsets */
803 struct ide_pci_device_s
*cds
; /* chipset device struct */
805 void (*rw_disk
)(ide_drive_t
*, struct request
*);
808 ide_hwif_ops_t
*hwifops
;
810 /* routine to tune PIO mode for drives */
811 void (*tuneproc
)(ide_drive_t
*, u8
);
812 /* routine to retune DMA modes for drives */
813 int (*speedproc
)(ide_drive_t
*, u8
);
814 /* tweaks hardware to select drive */
815 void (*selectproc
)(ide_drive_t
*);
816 /* chipset polling based on hba specifics */
817 int (*reset_poll
)(ide_drive_t
*);
818 /* chipset specific changes to default for device-hba resets */
819 void (*pre_reset
)(ide_drive_t
*);
820 /* routine to reset controller after a disk reset */
821 void (*resetproc
)(ide_drive_t
*);
822 /* special interrupt handling for shared pci interrupts */
823 void (*intrproc
)(ide_drive_t
*);
824 /* special host masking for drive selection */
825 void (*maskproc
)(ide_drive_t
*, int);
826 /* check host's drive quirk list */
827 int (*quirkproc
)(ide_drive_t
*);
828 /* driver soft-power interface */
829 int (*busproc
)(ide_drive_t
*, int);
830 // /* host rate limiter */
831 // u8 (*ratemask)(ide_drive_t *);
832 // /* device rate limiter */
833 // u8 (*ratefilter)(ide_drive_t *, u8);
836 void (*ata_input_data
)(ide_drive_t
*, void *, u32
);
837 void (*ata_output_data
)(ide_drive_t
*, void *, u32
);
839 void (*atapi_input_bytes
)(ide_drive_t
*, void *, u32
);
840 void (*atapi_output_bytes
)(ide_drive_t
*, void *, u32
);
842 int (*dma_setup
)(ide_drive_t
*);
843 void (*dma_exec_cmd
)(ide_drive_t
*, u8
);
844 void (*dma_start
)(ide_drive_t
*);
845 int (*ide_dma_end
)(ide_drive_t
*drive
);
846 int (*ide_dma_check
)(ide_drive_t
*drive
);
847 int (*ide_dma_on
)(ide_drive_t
*drive
);
848 int (*ide_dma_off_quietly
)(ide_drive_t
*drive
);
849 int (*ide_dma_test_irq
)(ide_drive_t
*drive
);
850 int (*ide_dma_host_on
)(ide_drive_t
*drive
);
851 int (*ide_dma_host_off
)(ide_drive_t
*drive
);
852 int (*ide_dma_lostirq
)(ide_drive_t
*drive
);
853 int (*ide_dma_timeout
)(ide_drive_t
*drive
);
855 void (*OUTB
)(u8 addr
, unsigned long port
);
856 void (*OUTBSYNC
)(ide_drive_t
*drive
, u8 addr
, unsigned long port
);
857 void (*OUTW
)(u16 addr
, unsigned long port
);
858 void (*OUTL
)(u32 addr
, unsigned long port
);
859 void (*OUTSW
)(unsigned long port
, void *addr
, u32 count
);
860 void (*OUTSL
)(unsigned long port
, void *addr
, u32 count
);
862 u8 (*INB
)(unsigned long port
);
863 u16 (*INW
)(unsigned long port
);
864 u32 (*INL
)(unsigned long port
);
865 void (*INSW
)(unsigned long port
, void *addr
, u32 count
);
866 void (*INSL
)(unsigned long port
, void *addr
, u32 count
);
868 /* dma physical region descriptor table (cpu view) */
869 unsigned int *dmatable_cpu
;
870 /* dma physical region descriptor table (dma view) */
871 dma_addr_t dmatable_dma
;
872 /* Scatter-gather list used to build the above */
873 struct scatterlist
*sg_table
;
874 int sg_max_nents
; /* Maximum number of entries in it */
875 int sg_nents
; /* Current number of entries in it */
876 int sg_dma_direction
; /* dma transfer direction */
878 /* data phase of the active command (currently only valid for PIO/DMA) */
884 unsigned int cursg_ofs
;
886 int mmio
; /* hosts iomio (0) or custom (2) select */
887 int rqsize
; /* max sectors per request */
888 int irq
; /* our irq number */
890 unsigned long dma_master
; /* reference base addr dmabase */
891 unsigned long dma_base
; /* base addr for dma ports */
892 unsigned long dma_command
; /* dma command register */
893 unsigned long dma_vendor1
; /* dma vendor 1 register */
894 unsigned long dma_status
; /* dma status register */
895 unsigned long dma_vendor3
; /* dma vendor 3 register */
896 unsigned long dma_prdtable
; /* actual prd table address */
897 unsigned long dma_base2
; /* extended base addr for dma ports */
899 unsigned dma_extra
; /* extra addr for dma ports */
900 unsigned long config_data
; /* for use by chipset-specific code */
901 unsigned long select_data
; /* for use by chipset-specific code */
903 unsigned noprobe
: 1; /* don't probe for this interface */
904 unsigned present
: 1; /* this interface exists */
905 unsigned hold
: 1; /* this interface is always present */
906 unsigned serialized
: 1; /* serialized all channel operation */
907 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
908 unsigned reset
: 1; /* reset after probe */
909 unsigned autodma
: 1; /* auto-attempt using DMA at boot */
910 unsigned udma_four
: 1; /* 1=ATA-66 capable, 0=default */
911 unsigned no_lba48
: 1; /* 1 = cannot do LBA48 */
912 unsigned no_lba48_dma
: 1; /* 1 = cannot do LBA48 DMA */
913 unsigned no_dsc
: 1; /* 0 default, 1 dsc_overlap disabled */
914 unsigned auto_poll
: 1; /* supports nop auto-poll */
915 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
917 struct device gendev
;
918 struct semaphore gendev_rel_sem
; /* To deal with device release() */
920 void *hwif_data
; /* extra hwif data */
924 void (*led_act
)(void *data
, int rw
);
925 } ____cacheline_maxaligned_in_smp ide_hwif_t
;
928 * internal ide interrupt handler type
930 typedef ide_startstop_t (ide_pre_handler_t
)(ide_drive_t
*, struct request
*);
931 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
932 typedef int (ide_expiry_t
)(ide_drive_t
*);
934 typedef struct hwgroup_s
{
935 /* irq handler, if active */
936 ide_startstop_t (*handler
)(ide_drive_t
*);
937 /* irq handler, suspended if active */
938 ide_startstop_t (*handler_save
)(ide_drive_t
*);
939 /* BOOL: protects all fields below */
941 /* BOOL: wake us up on timer expiry */
942 unsigned int sleeping
: 1;
943 /* BOOL: polling active & poll_timeout field valid */
944 unsigned int polling
: 1;
947 /* ptr to current hwif in linked-list */
950 /* for pci chipsets */
951 struct pci_dev
*pci_dev
;
952 /* chipset device struct */
953 struct ide_pci_device_s
*cds
;
955 /* current request */
958 struct timer_list timer
;
959 /* local copy of current write rq */
961 /* timeout value during long polls */
962 unsigned long poll_timeout
;
963 /* queried upon timeouts */
964 int (*expiry
)(ide_drive_t
*);
965 /* ide_system_bus_speed */
968 unsigned char cmd_buf
[4];
971 /* structure attached to the request for IDE_TASK_CMDS */
974 * configurable drive settings
982 #define SETTING_READ (1 << 0)
983 #define SETTING_WRITE (1 << 1)
984 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
986 typedef int (ide_procset_t
)(ide_drive_t
*, int);
987 typedef struct ide_settings_s
{
1000 struct ide_settings_s
*next
;
1003 extern struct semaphore ide_setting_sem
;
1004 extern int ide_add_setting(ide_drive_t
*drive
, const char *name
, int rw
, int read_ioctl
, int write_ioctl
, int data_type
, int min
, int max
, int mul_factor
, int div_factor
, void *data
, ide_procset_t
*set
);
1005 extern ide_settings_t
*ide_find_setting_by_name(ide_drive_t
*drive
, char *name
);
1006 extern int ide_read_setting(ide_drive_t
*t
, ide_settings_t
*setting
);
1007 extern int ide_write_setting(ide_drive_t
*drive
, ide_settings_t
*setting
, int val
);
1008 extern void ide_add_generic_settings(ide_drive_t
*drive
);
1011 * /proc/ide interface
1016 read_proc_t
*read_proc
;
1017 write_proc_t
*write_proc
;
1020 #ifdef CONFIG_PROC_FS
1021 extern struct proc_dir_entry
*proc_ide_root
;
1023 extern void proc_ide_create(void);
1024 extern void proc_ide_destroy(void);
1025 extern void create_proc_ide_interfaces(void);
1026 void destroy_proc_ide_interface(ide_hwif_t
*);
1027 extern void ide_add_proc_entries(struct proc_dir_entry
*, ide_proc_entry_t
*, void *);
1028 extern void ide_remove_proc_entries(struct proc_dir_entry
*, ide_proc_entry_t
*);
1029 read_proc_t proc_ide_read_capacity
;
1030 read_proc_t proc_ide_read_geometry
;
1032 #ifdef CONFIG_BLK_DEV_IDEPCI
1033 void ide_pci_create_host_proc(const char *, get_info_t
*);
1037 * Standard exit stuff:
1039 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1042 if (len < count) { \
1048 *start = page + off; \
1052 static inline void create_proc_ide_interfaces(void) { ; }
1053 static inline void destroy_proc_ide_interface(ide_hwif_t
*hwif
) { ; }
1054 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1058 * Power Management step value (rq->pm->pm_step).
1060 * The step value starts at 0 (ide_pm_state_start_suspend) for a
1061 * suspend operation or 1000 (ide_pm_state_start_resume) for a
1064 * For each step, the core calls the subdriver start_power_step() first.
1066 * - ide_stopped : In this case, the core calls us back again unless
1067 * step have been set to ide_power_state_completed.
1068 * - ide_started : In this case, the channel is left busy until an
1069 * async event (interrupt) occurs.
1070 * Typically, start_power_step() will issue a taskfile request with
1073 * Upon reception of the interrupt, the core will call complete_power_step()
1074 * with the error code if any. This routine should update the step value
1075 * and return. It should not start a new request. The core will call
1076 * start_power_step for the new step value, unless step have been set to
1077 * ide_power_state_completed.
1079 * Subdrivers are expected to define their own additional power
1080 * steps from 1..999 for suspend and from 1001..1999 for resume,
1081 * other values are reserved for future use.
1085 ide_pm_state_completed
= -1,
1086 ide_pm_state_start_suspend
= 0,
1087 ide_pm_state_start_resume
= 1000,
1091 * Subdrivers support.
1093 typedef struct ide_driver_s
{
1094 struct module
*owner
;
1095 const char *version
;
1097 unsigned supports_dsc_overlap
: 1;
1098 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1099 int (*end_request
)(ide_drive_t
*, int, int);
1100 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
1101 ide_startstop_t (*abort
)(ide_drive_t
*, struct request
*rq
);
1102 int (*ioctl
)(ide_drive_t
*, struct inode
*, struct file
*, unsigned int, unsigned long);
1103 ide_proc_entry_t
*proc
;
1104 void (*ata_prebuilder
)(ide_drive_t
*);
1105 void (*atapi_prebuilder
)(ide_drive_t
*);
1106 struct device_driver gen_driver
;
1109 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*, unsigned, unsigned long);
1112 * ide_hwifs[] is the master data structure used to keep track
1113 * of just about everything in ide.c. Whenever possible, routines
1114 * should be using pointers to a drive (ide_drive_t *) or
1115 * pointers to a hwif (ide_hwif_t *), rather than indexing this
1116 * structure directly (the allocation/layout may change!).
1120 extern ide_hwif_t ide_hwifs
[]; /* master data repository */
1122 extern int noautodma
;
1124 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1125 extern int __ide_end_request (ide_drive_t
*drive
, struct request
*rq
, int uptodate
, int nrsecs
);
1128 * This is used on exit from the driver to designate the next irq handler
1129 * and also to start the safety timer.
1131 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1134 * This is used on exit from the driver to designate the next irq handler
1135 * and start the safety time safely and atomically from the IRQ handler
1136 * with respect to the command issue (which it also does)
1138 extern void ide_execute_command(ide_drive_t
*, task_ioreg_t cmd
, ide_handler_t
*, unsigned int, ide_expiry_t
*);
1140 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1143 * ide_error() takes action based on the error returned by the controller.
1144 * The caller should return immediately after invoking this.
1146 * (drive, msg, status)
1148 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1150 ide_startstop_t
__ide_abort(ide_drive_t
*, struct request
*);
1153 * Abort a running command on the controller triggering the abort
1154 * from a host side, non error situation
1157 extern ide_startstop_t
ide_abort(ide_drive_t
*, const char *);
1159 extern void ide_fix_driveid(struct hd_driveid
*);
1161 * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
1162 * removing leading/trailing blanks and compressing internal blanks.
1163 * It is primarily used to tidy up the model name/number fields as
1164 * returned by the WIN_[P]IDENTIFY commands.
1166 * (s, bytecount, byteswap)
1168 extern void ide_fixstring(u8
*, const int, const int);
1171 * This routine busy-waits for the drive status to be not "busy".
1172 * It then checks the status for all of the "good" bits and none
1173 * of the "bad" bits, and if all is okay it returns 0. All other
1174 * cases return 1 after doing "*startstop = ide_error()", and the
1175 * caller should return the updated value of "startstop" in this case.
1176 * "startstop" is unchanged when the function returns 0;
1177 * (startstop, drive, good, bad, timeout)
1179 extern int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1182 * Start a reset operation for an IDE interface.
1183 * The caller should return immediately after invoking this.
1185 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1188 * This function is intended to be used prior to invoking ide_do_drive_cmd().
1190 extern void ide_init_drive_cmd (struct request
*rq
);
1193 * this function returns error location sector offset in case of a write error
1195 extern u64
ide_get_error_location(ide_drive_t
*, char *);
1198 * "action" parameter type for ide_do_drive_cmd() below.
1201 ide_wait
, /* insert rq at end of list, and wait for it */
1202 ide_next
, /* insert rq immediately after current request */
1203 ide_preempt
, /* insert rq in front of current request */
1204 ide_head_wait
, /* insert rq in front of current request and wait for it */
1205 ide_end
/* insert rq at end of list, but don't wait for it */
1209 * This function issues a special IDE device request
1210 * onto the request queue.
1212 * If action is ide_wait, then the rq is queued at the end of the
1213 * request queue, and the function sleeps until it has been processed.
1214 * This is for use when invoked from an ioctl handler.
1216 * If action is ide_preempt, then the rq is queued at the head of
1217 * the request queue, displacing the currently-being-processed
1218 * request and this function returns immediately without waiting
1219 * for the new rq to be completed. This is VERY DANGEROUS, and is
1220 * intended for careful use by the ATAPI tape/cdrom driver code.
1222 * If action is ide_next, then the rq is queued immediately after
1223 * the currently-being-processed-request (if any), and the function
1224 * returns without waiting for the new rq to be completed. As above,
1225 * This is VERY DANGEROUS, and is intended for careful use by the
1226 * ATAPI tape/cdrom driver code.
1228 * If action is ide_end, then the rq is queued at the end of the
1229 * request queue, and the function returns immediately without waiting
1230 * for the new rq to be completed. This is again intended for careful
1231 * use by the ATAPI tape/cdrom driver code.
1233 extern int ide_do_drive_cmd(ide_drive_t
*, struct request
*, ide_action_t
);
1236 * Clean up after success/failure of an explicit drive cmd.
1237 * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD).
1238 * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_TASK_MASK).
1240 * (ide_drive_t *drive, u8 stat, u8 err)
1242 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1245 * Issue ATA command and wait for completion.
1246 * Use for implementing commands in kernel
1248 * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
1250 extern int ide_wait_cmd(ide_drive_t
*, u8
, u8
, u8
, u8
, u8
*);
1252 typedef struct ide_task_s
{
1254 * struct hd_drive_task_hdr tf;
1256 * struct hd_drive_hob_hdr hobf;
1257 * hob_struct_t hobf;
1259 task_ioreg_t tfRegister
[8];
1260 task_ioreg_t hobRegister
[8];
1261 ide_reg_valid_t tf_out_flags
;
1262 ide_reg_valid_t tf_in_flags
;
1265 ide_pre_handler_t
*prehandler
;
1266 ide_handler_t
*handler
;
1267 struct request
*rq
; /* copy of request */
1268 void *special
; /* valid_t generally */
1271 extern u32
ide_read_24(ide_drive_t
*);
1273 extern void SELECT_DRIVE(ide_drive_t
*);
1274 extern void SELECT_INTERRUPT(ide_drive_t
*);
1275 extern void SELECT_MASK(ide_drive_t
*, int);
1276 extern void QUIRK_LIST(ide_drive_t
*);
1278 extern int drive_is_ready(ide_drive_t
*);
1279 extern int wait_for_ready(ide_drive_t
*, int /* timeout */);
1282 * taskfile io for disks for now...and builds request from ide_ioctl
1284 extern ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1287 * Special Flagged Register Validation Caller
1289 extern ide_startstop_t
flagged_taskfile(ide_drive_t
*, ide_task_t
*);
1291 extern ide_startstop_t
set_multmode_intr(ide_drive_t
*);
1292 extern ide_startstop_t
set_geometry_intr(ide_drive_t
*);
1293 extern ide_startstop_t
recal_intr(ide_drive_t
*);
1294 extern ide_startstop_t
task_no_data_intr(ide_drive_t
*);
1295 extern ide_startstop_t
task_in_intr(ide_drive_t
*);
1296 extern ide_startstop_t
pre_task_out_intr(ide_drive_t
*, struct request
*);
1298 extern int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*);
1300 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1301 int ide_cmd_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1302 int ide_task_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1304 extern int system_bus_clock(void);
1306 extern int ide_driveid_update(ide_drive_t
*);
1307 extern int ide_ata66_check(ide_drive_t
*, ide_task_t
*);
1308 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1309 extern u8
eighty_ninty_three (ide_drive_t
*);
1310 extern int set_transfer(ide_drive_t
*, ide_task_t
*);
1311 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1313 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1316 * ide_stall_queue() can be used by a drive to give excess bandwidth back
1317 * to the hwgroup by sleeping for timeout jiffies.
1319 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1321 extern int ide_spin_wait_hwgroup(ide_drive_t
*);
1322 extern void ide_timer_expiry(unsigned long);
1323 extern irqreturn_t
ide_intr(int irq
, void *dev_id
, struct pt_regs
*regs
);
1324 extern void do_ide_request(request_queue_t
*);
1325 extern void ide_init_subdrivers(void);
1327 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1329 extern int ideprobe_init(void);
1331 extern void ide_scan_pcibus(int scan_direction
) __init
;
1332 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
);
1333 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE)
1334 extern void ide_pci_unregister_driver(struct pci_driver
*driver
);
1335 void ide_pci_setup_ports(struct pci_dev
*, struct ide_pci_device_s
*, int, ata_index_t
*);
1336 extern void ide_setup_pci_noise (struct pci_dev
*dev
, struct ide_pci_device_s
*d
);
1338 extern void default_hwif_iops(ide_hwif_t
*);
1339 extern void default_hwif_mmiops(ide_hwif_t
*);
1340 extern void default_hwif_transport(ide_hwif_t
*);
1342 void ide_register_subdriver(ide_drive_t
*, ide_driver_t
*);
1343 void ide_unregister_subdriver(ide_drive_t
*, ide_driver_t
*);
1346 #define NEVER_BOARD 0
1348 #ifdef CONFIG_BLK_DEV_OFFBOARD
1349 # define OFF_BOARD ON_BOARD
1350 #else /* CONFIG_BLK_DEV_OFFBOARD */
1351 # define OFF_BOARD NEVER_BOARD
1352 #endif /* CONFIG_BLK_DEV_OFFBOARD */
1358 typedef struct ide_pci_enablebit_s
{
1359 u8 reg
; /* byte pci reg holding the enable-bit */
1360 u8 mask
; /* mask to isolate the enable-bit */
1361 u8 val
; /* value of masked reg when "enabled" */
1362 } ide_pci_enablebit_t
;
1365 /* Uses ISA control ports not PCI ones. */
1366 IDEPCI_FLAG_ISA_PORTS
= (1 << 0),
1367 IDEPCI_FLAG_FORCE_PDC
= (1 << 1),
1370 typedef struct ide_pci_device_s
{
1372 int (*init_setup
)(struct pci_dev
*, struct ide_pci_device_s
*);
1373 void (*init_setup_dma
)(struct pci_dev
*, struct ide_pci_device_s
*, ide_hwif_t
*);
1374 unsigned int (*init_chipset
)(struct pci_dev
*, const char *);
1375 void (*init_iops
)(ide_hwif_t
*);
1376 void (*init_hwif
)(ide_hwif_t
*);
1377 void (*init_dma
)(ide_hwif_t
*, unsigned long);
1378 void (*fixup
)(ide_hwif_t
*);
1381 ide_pci_enablebit_t enablebits
[2];
1384 struct ide_pci_device_s
*next
;
1388 extern int ide_setup_pci_device(struct pci_dev
*, ide_pci_device_t
*);
1389 extern int ide_setup_pci_devices(struct pci_dev
*, struct pci_dev
*, ide_pci_device_t
*);
1391 void ide_map_sg(ide_drive_t
*, struct request
*);
1392 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1394 #define BAD_DMA_DRIVE 0
1395 #define GOOD_DMA_DRIVE 1
1397 #ifdef CONFIG_BLK_DEV_IDEDMA
1398 int __ide_dma_bad_drive(ide_drive_t
*);
1399 int __ide_dma_good_drive(ide_drive_t
*);
1400 int ide_use_dma(ide_drive_t
*);
1401 int __ide_dma_off(ide_drive_t
*);
1402 void ide_dma_verbose(ide_drive_t
*);
1403 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1405 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1406 extern int ide_build_sglist(ide_drive_t
*, struct request
*);
1407 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1408 extern void ide_destroy_dmatable(ide_drive_t
*);
1409 extern int ide_release_dma(ide_hwif_t
*);
1410 extern void ide_setup_dma(ide_hwif_t
*, unsigned long, unsigned int);
1412 extern int __ide_dma_host_off(ide_drive_t
*);
1413 extern int __ide_dma_off_quietly(ide_drive_t
*);
1414 extern int __ide_dma_host_on(ide_drive_t
*);
1415 extern int __ide_dma_on(ide_drive_t
*);
1416 extern int __ide_dma_check(ide_drive_t
*);
1417 extern int ide_dma_setup(ide_drive_t
*);
1418 extern void ide_dma_start(ide_drive_t
*);
1419 extern int __ide_dma_end(ide_drive_t
*);
1420 extern int __ide_dma_lostirq(ide_drive_t
*);
1421 extern int __ide_dma_timeout(ide_drive_t
*);
1422 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1425 static inline int ide_use_dma(ide_drive_t
*drive
) { return 0; }
1426 static inline int __ide_dma_off(ide_drive_t
*drive
) { return 0; }
1427 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1428 #endif /* CONFIG_BLK_DEV_IDEDMA */
1430 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1431 static inline void ide_release_dma(ide_hwif_t
*drive
) {;}
1434 extern int ide_hwif_request_regions(ide_hwif_t
*hwif
);
1435 extern void ide_hwif_release_regions(ide_hwif_t
* hwif
);
1436 extern void ide_unregister (unsigned int index
);
1438 void ide_register_region(struct gendisk
*);
1439 void ide_unregister_region(struct gendisk
*);
1441 void ide_undecoded_slave(ide_hwif_t
*);
1443 int probe_hwif_init_with_fixup(ide_hwif_t
*, void (*)(ide_hwif_t
*));
1444 extern int probe_hwif_init(ide_hwif_t
*);
1446 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1448 return hwif
->hwif_data
;
1451 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1453 hwif
->hwif_data
= data
;
1457 extern u8
ide_dma_speed(ide_drive_t
*drive
, u8 mode
);
1458 extern u8
ide_rate_filter(u8 mode
, u8 speed
);
1459 extern int ide_dma_enable(ide_drive_t
*drive
);
1460 extern char *ide_xfer_verbose(u8 xfer_rate
);
1461 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1462 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1464 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1466 typedef struct ide_pio_timings_s
{
1467 int setup_time
; /* Address setup (ns) minimum */
1468 int active_time
; /* Active pulse (ns) minimum */
1469 int cycle_time
; /* Cycle time (ns) minimum = (setup + active + recovery) */
1470 } ide_pio_timings_t
;
1472 typedef struct ide_pio_data_s
{
1477 unsigned int cycle_time
;
1480 extern u8
ide_get_best_pio_mode (ide_drive_t
*drive
, u8 mode_wanted
, u8 max_mode
, ide_pio_data_t
*d
);
1481 extern const ide_pio_timings_t ide_pio_timings
[6];
1484 extern spinlock_t ide_lock
;
1485 extern struct semaphore ide_cfg_sem
;
1487 * Structure locking:
1489 * ide_cfg_sem and ide_lock together protect changes to
1490 * ide_hwif_t->{next,hwgroup}
1493 * ide_hwgroup_t->busy: ide_lock
1494 * ide_hwgroup_t->hwif: ide_lock
1495 * ide_hwif_t->mate: constant, no locking
1496 * ide_drive_t->hwif: constant, no locking
1499 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable(); } while (0)
1501 extern struct bus_type ide_bus_type
;
1503 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1504 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1506 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1507 #define ide_id_has_flush_cache_ext(id) \
1508 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1510 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1512 struct pci_dev
*dev
= hwif
->pci_dev
;
1513 return dev
? pcibus_to_node(dev
->bus
) : -1;