4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/hdreg.h>
12 #include <linux/hdsmart.h>
13 #include <linux/blkdev.h>
14 #include <linux/proc_fs.h>
15 #include <linux/interrupt.h>
16 #include <linux/bitops.h>
17 #include <linux/bio.h>
18 #include <linux/device.h>
19 #include <linux/pci.h>
20 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
27 #include <asm/semaphore.h>
28 #include <asm/mutex.h>
30 /******************************************************************************
31 * IDE driver configuration options (play with these as desired):
33 * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary
35 #define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */
37 #ifndef SUPPORT_SLOW_DATA_PORTS /* 1 to support slow data ports */
38 #define SUPPORT_SLOW_DATA_PORTS 1 /* 0 to reduce kernel size */
40 #ifndef SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */
41 #define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */
43 #ifndef OK_TO_RESET_CONTROLLER /* 1 needed for good error recovery */
44 #define OK_TO_RESET_CONTROLLER 1 /* 0 for use with AH2372A/B interface */
47 #ifndef DISABLE_IRQ_NOSYNC
48 #define DISABLE_IRQ_NOSYNC 0
52 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
56 #define IDE_NO_IRQ (-1)
59 * "No user-serviceable parts" beyond this point :)
60 *****************************************************************************/
62 typedef unsigned char byte
; /* used everywhere */
65 * Probably not wise to fiddle with these
67 #define ERROR_MAX 8 /* Max read/write errors per sector */
68 #define ERROR_RESET 3 /* Reset controller every 4th retry */
69 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
74 #define IDE_TUNE_NOAUTO 2
75 #define IDE_TUNE_AUTO 1
76 #define IDE_TUNE_DEFAULT 0
82 #define DMA_PIO_RETRY 1 /* retrying in PIO */
84 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
85 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
88 * Definitions for accessing IDE controller registers
90 #define IDE_NR_PORTS (10)
92 #define IDE_DATA_OFFSET (0)
93 #define IDE_ERROR_OFFSET (1)
94 #define IDE_NSECTOR_OFFSET (2)
95 #define IDE_SECTOR_OFFSET (3)
96 #define IDE_LCYL_OFFSET (4)
97 #define IDE_HCYL_OFFSET (5)
98 #define IDE_SELECT_OFFSET (6)
99 #define IDE_STATUS_OFFSET (7)
100 #define IDE_CONTROL_OFFSET (8)
101 #define IDE_IRQ_OFFSET (9)
103 #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
104 #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
106 #define IDE_CONTROL_OFFSET_HOB (7)
108 #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
109 #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
110 #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
111 #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
112 #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
113 #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
114 #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
115 #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
116 #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
117 #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
119 #define IDE_FEATURE_REG IDE_ERROR_REG
120 #define IDE_COMMAND_REG IDE_STATUS_REG
121 #define IDE_ALTSTATUS_REG IDE_CONTROL_REG
122 #define IDE_IREASON_REG IDE_NSECTOR_REG
123 #define IDE_BCOUNTL_REG IDE_LCYL_REG
124 #define IDE_BCOUNTH_REG IDE_HCYL_REG
126 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
127 #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
128 #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
129 #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
130 #define DRIVE_READY (READY_STAT | SEEK_STAT)
131 #define DATA_READY (DRQ_STAT)
133 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
135 #define SATA_NR_PORTS (3) /* 16 possible ?? */
137 #define SATA_STATUS_OFFSET (0)
138 #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
139 #define SATA_ERROR_OFFSET (1)
140 #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
141 #define SATA_CONTROL_OFFSET (2)
142 #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
144 #define SATA_MISC_OFFSET (0)
145 #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
146 #define SATA_PHY_OFFSET (1)
147 #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
148 #define SATA_IEN_OFFSET (2)
149 #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
152 * Our Physical Region Descriptor (PRD) table should be large enough
153 * to handle the biggest I/O request we are likely to see. Since requests
154 * can have no more than 256 sectors, and since the typical blocksize is
155 * two or more sectors, we could get by with a limit of 128 entries here for
156 * the usual worst case. Most requests seem to include some contiguous blocks,
157 * further reducing the number of table entries required.
159 * The driver reverts to PIO mode for individual requests that exceed
160 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
161 * 100% of all crazy scenarios here is not necessary.
163 * As it turns out though, we must allocate a full 4KB page for this,
164 * so the two PRD tables (ide0 & ide1) will each get half of that,
165 * allowing each to have about 256 entries (8 bytes each) from this.
168 #define PRD_ENTRIES 256
171 * Some more useful definitions
173 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
174 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
175 #define SECTOR_SIZE 512
176 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
177 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
180 * Timeouts for various operations:
182 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
183 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
184 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
185 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
186 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
187 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
190 * Check for an interrupt and acknowledge the interrupt status
193 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
200 * hwif_chipset_t is used to keep track of the specific hardware
201 * chipset used by each IDE interface, if known.
203 enum { ide_unknown
, ide_generic
, ide_pci
,
204 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
205 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
206 ide_rz1000
, ide_trm290
,
207 ide_cmd646
, ide_cy82c693
, ide_4drives
,
208 ide_pmac
, ide_etrax100
, ide_acorn
,
209 ide_au1xxx
, ide_forced
212 typedef u8 hwif_chipset_t
;
215 * Structure to hold all information about the location of this port
217 typedef struct hw_regs_s
{
218 unsigned long io_ports
[IDE_NR_PORTS
]; /* task file registers */
219 int irq
; /* our irq number */
220 int dma
; /* our dma entry */
221 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
222 hwif_chipset_t chipset
;
226 int ide_register_hw(hw_regs_t
*, void (*)(struct hwif_s
*), int,
230 * Set up hw_regs_t structure before calling ide_register_hw (optional)
232 void ide_setup_ports( hw_regs_t
*hw
,
237 ide_ack_intr_t
*ack_intr
,
243 static inline void ide_std_init_ports(hw_regs_t
*hw
,
244 unsigned long io_addr
,
245 unsigned long ctl_addr
)
249 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
250 hw
->io_ports
[i
] = io_addr
++;
252 hw
->io_ports
[IDE_CONTROL_OFFSET
] = ctl_addr
;
257 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
259 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
262 /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
263 #ifndef IDE_ARCH_OBSOLETE_DEFAULTS
264 # define ide_default_io_base(index) (0)
265 # define ide_default_irq(base) (0)
266 # define ide_init_default_irq(base) (0)
270 * ide_init_hwif_ports() is OBSOLETE and will be removed in 2.7 series.
271 * New ports shouldn't define IDE_ARCH_OBSOLETE_INIT in <asm/ide.h>.
273 #ifdef IDE_ARCH_OBSOLETE_INIT
274 static inline void ide_init_hwif_ports(hw_regs_t
*hw
,
275 unsigned long io_addr
,
276 unsigned long ctl_addr
,
280 ide_std_init_ports(hw
, io_addr
, ide_default_io_ctl(io_addr
));
282 ide_std_init_ports(hw
, io_addr
, ctl_addr
);
287 hw
->io_ports
[IDE_IRQ_OFFSET
] = 0;
290 if (ppc_ide_md
.ide_init_hwif
)
291 ppc_ide_md
.ide_init_hwif(hw
, io_addr
, ctl_addr
, irq
);
295 static inline void ide_init_hwif_ports(hw_regs_t
*hw
,
296 unsigned long io_addr
,
297 unsigned long ctl_addr
,
300 if (io_addr
|| ctl_addr
)
301 printk(KERN_WARNING
"%s: must not be called\n", __FUNCTION__
);
303 #endif /* IDE_ARCH_OBSOLETE_INIT */
305 /* Currently only m68k, apus and m8xx need it */
306 #ifndef IDE_ARCH_ACK_INTR
307 # define ide_ack_intr(hwif) (1)
310 /* Currently only Atari needs it */
311 #ifndef IDE_ARCH_LOCK
312 # define ide_release_lock() do {} while (0)
313 # define ide_get_lock(hdlr, data) do {} while (0)
314 #endif /* IDE_ARCH_LOCK */
317 * Now for the data we need to maintain per-drive: ide_drive_t
320 #define ide_scsi 0x21
321 #define ide_disk 0x20
322 #define ide_optical 0x7
323 #define ide_cdrom 0x5
325 #define ide_floppy 0x0
328 * Special Driver Flags
330 * set_geometry : respecify drive geometry
331 * recalibrate : seek to cyl 0
332 * set_multmode : set multmode count
333 * set_tune : tune interface for drive
334 * serviced : service command
340 #if defined(__LITTLE_ENDIAN_BITFIELD)
341 unsigned set_geometry
: 1;
342 unsigned recalibrate
: 1;
343 unsigned set_multmode
: 1;
344 unsigned set_tune
: 1;
345 unsigned serviced
: 1;
346 unsigned reserved
: 3;
347 #elif defined(__BIG_ENDIAN_BITFIELD)
348 unsigned reserved
: 3;
349 unsigned serviced
: 1;
350 unsigned set_tune
: 1;
351 unsigned set_multmode
: 1;
352 unsigned recalibrate
: 1;
353 unsigned set_geometry
: 1;
355 #error "Please fix <asm/byteorder.h>"
361 * ATA DATA Register Special.
362 * ATA NSECTOR Count Register().
363 * ATAPI Byte Count Register.
364 * Channel index ordering pairs.
369 #if defined(__LITTLE_ENDIAN_BITFIELD)
370 unsigned low
:8; /* LSB */
371 unsigned high
:8; /* MSB */
372 #elif defined(__BIG_ENDIAN_BITFIELD)
373 unsigned high
:8; /* MSB */
374 unsigned low
:8; /* LSB */
376 #error "Please fix <asm/byteorder.h>"
379 } ata_nsector_t
, ata_data_t
, atapi_bcount_t
, ata_index_t
;
382 * ATA-IDE Select Register, aka Device-Head
384 * head : always zeros here
385 * unit : drive select number: 0/1
387 * lba : using LBA instead of CHS
393 #if defined(__LITTLE_ENDIAN_BITFIELD)
399 #elif defined(__BIG_ENDIAN_BITFIELD)
406 #error "Please fix <asm/byteorder.h>"
409 } select_t
, ata_select_t
;
412 * The ATA-IDE Status Register.
413 * The ATAPI Status Register.
415 * check : Error occurred
417 * corr : Correctable error occurred
418 * drq : Data is request by the device
419 * dsc : Disk Seek Complete : ata
420 * : Media access command finished : atapi
421 * df : Device Fault : ata
423 * drdy : Ready, Command Mode Capable : ata
424 * : Ignored for ATAPI commands : atapi
426 * : The device has access to the command block
431 #if defined(__LITTLE_ENDIAN_BITFIELD)
440 #elif defined(__BIG_ENDIAN_BITFIELD)
450 #error "Please fix <asm/byteorder.h>"
453 } ata_status_t
, atapi_status_t
;
456 * ATAPI Feature Register
458 * dma : Using DMA or PIO
459 * reserved321 : Reserved
460 * reserved654 : Reserved (Tag Type)
461 * reserved7 : Reserved
466 #if defined(__LITTLE_ENDIAN_BITFIELD)
468 unsigned reserved321
:3;
469 unsigned reserved654
:3;
470 unsigned reserved7
:1;
471 #elif defined(__BIG_ENDIAN_BITFIELD)
472 unsigned reserved7
:1;
473 unsigned reserved654
:3;
474 unsigned reserved321
:3;
477 #error "Please fix <asm/byteorder.h>"
483 * ATAPI Interrupt Reason Register.
485 * cod : Information transferred is command (1) or data (0)
486 * io : The device requests us to read (1) or write (0)
487 * reserved : Reserved
492 #if defined(__LITTLE_ENDIAN_BITFIELD)
495 unsigned reserved
:6;
496 #elif defined(__BIG_ENDIAN_BITFIELD)
497 unsigned reserved
:6;
501 #error "Please fix <asm/byteorder.h>"
507 * The ATAPI error register.
509 * ili : Illegal Length Indication
510 * eom : End Of Media Detected
511 * abrt : Aborted command - As defined by ATA
512 * mcr : Media Change Requested - As defined by ATA
513 * sense_key : Sense key of the last failed packet command
518 #if defined(__LITTLE_ENDIAN_BITFIELD)
523 unsigned sense_key
:4;
524 #elif defined(__BIG_ENDIAN_BITFIELD)
525 unsigned sense_key
:4;
531 #error "Please fix <asm/byteorder.h>"
537 * Status returned from various ide_ functions
540 ide_stopped
, /* no drive operation was started */
541 ide_started
, /* a drive operation was started, handler was set */
545 struct ide_settings_s
;
547 #ifdef CONFIG_BLK_DEV_IDEACPI
548 struct ide_acpi_drive_link
;
549 struct ide_acpi_hwif_link
;
552 typedef struct ide_drive_s
{
553 char name
[4]; /* drive name, such as "hda" */
554 char driver_req
[10]; /* requests specific driver */
556 struct request_queue
*queue
; /* request queue */
558 struct request
*rq
; /* current request */
559 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
560 void *driver_data
; /* extra driver data */
561 struct hd_driveid
*id
; /* drive model identification info */
562 #ifdef CONFIG_IDE_PROC_FS
563 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
564 struct ide_settings_s
*settings
;/* /proc/ide/ drive settings */
566 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
568 unsigned long sleep
; /* sleep until this time */
569 unsigned long service_start
; /* time we started last request */
570 unsigned long service_time
; /* service time of last request */
571 unsigned long timeout
; /* max time to wait for irq */
573 special_t special
; /* special action flags */
574 select_t select
; /* basic drive/head select reg value */
576 u8 keep_settings
; /* restore settings after drive reset */
577 u8 using_dma
; /* disk is using dma for read/write */
578 u8 retry_pio
; /* retrying dma capable host in pio */
579 u8 state
; /* retry state */
580 u8 waiting_for_dma
; /* dma currently in progress */
581 u8 unmask
; /* okay to unmask other irqs */
582 u8 bswap
; /* byte swap data */
583 u8 noflush
; /* don't attempt flushes */
584 u8 dsc_overlap
; /* DSC overlap */
585 u8 nice1
; /* give potential excess bandwidth */
587 unsigned present
: 1; /* drive is physically present */
588 unsigned dead
: 1; /* device ejected hint */
589 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
590 unsigned noprobe
: 1; /* from: hdx=noprobe */
591 unsigned removable
: 1; /* 1 if need to do check_media_change */
592 unsigned attach
: 1; /* needed for removable devices */
593 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
594 unsigned no_unmask
: 1; /* disallow setting unmask bit */
595 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
596 unsigned atapi_overlap
: 1; /* ATAPI overlap (not supported) */
597 unsigned nice0
: 1; /* give obvious excess bandwidth */
598 unsigned nice2
: 1; /* give a share in our own bandwidth */
599 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
600 unsigned nodma
: 1; /* disallow DMA */
601 unsigned autotune
: 2; /* 0=default, 1=autotune, 2=noautotune */
602 unsigned remap_0_to_1
: 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
603 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
604 unsigned vdma
: 1; /* 1=doing PIO over DMA 0=doing normal DMA */
605 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
606 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
607 unsigned post_reset
: 1;
608 unsigned udma33_warned
: 1;
610 u8 addressing
; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
611 u8 quirk_list
; /* considered quirky, set for a specific host */
612 u8 init_speed
; /* transfer rate set at boot */
613 u8 current_speed
; /* current transfer rate set */
614 u8 desired_speed
; /* desired transfer rate set */
615 u8 dn
; /* now wide spread use */
616 u8 wcache
; /* status of write cache */
617 u8 acoustic
; /* acoustic management */
618 u8 media
; /* disk, cdrom, tape, floppy, ... */
619 u8 ctl
; /* "normal" value for IDE_CONTROL_REG */
620 u8 ready_stat
; /* min status value for drive ready */
621 u8 mult_count
; /* current multiple sector setting */
622 u8 mult_req
; /* requested multiple sector setting */
623 u8 tune_req
; /* requested drive tuning setting */
624 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
625 u8 bad_wstat
; /* used for ignoring WRERR_STAT */
626 u8 nowerr
; /* used for ignoring WRERR_STAT */
627 u8 sect0
; /* offset of first sector for DM6:DDO */
628 u8 head
; /* "real" number of heads */
629 u8 sect
; /* "real" sectors per track */
630 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
631 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
633 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
634 unsigned int cyl
; /* "real" number of cyls */
635 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
636 unsigned int failures
; /* current failure count */
637 unsigned int max_failures
; /* maximum allowed failure count */
638 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
640 u64 capacity64
; /* total number of sectors */
642 int lun
; /* logical unit */
643 int crc_count
; /* crc counter to reduce drive speed */
644 #ifdef CONFIG_BLK_DEV_IDEACPI
645 struct ide_acpi_drive_link
*acpidata
;
647 struct list_head list
;
648 struct device gendev
;
649 struct completion gendev_rel_comp
; /* to deal with device release() */
652 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
654 #define IDE_CHIPSET_PCI_MASK \
655 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
656 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
658 struct ide_pci_device_s
;
660 typedef struct hwif_s
{
661 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
662 struct hwif_s
*mate
; /* other hwif from same PCI chip */
663 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
664 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
666 char name
[6]; /* name of interface, eg. "ide0" */
668 /* task file registers for pata and sata */
669 unsigned long io_ports
[IDE_NR_PORTS
];
670 unsigned long sata_scr
[SATA_NR_PORTS
];
671 unsigned long sata_misc
[SATA_NR_PORTS
];
673 hw_regs_t hw
; /* Hardware info */
674 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
676 u8 major
; /* our major number */
677 u8 index
; /* 0 for ide0; 1 for ide1; ... */
678 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
679 u8 straight8
; /* Alan's straight 8 check */
680 u8 bus_state
; /* power state of the IDE bus */
690 u8 cbl
; /* cable type */
692 hwif_chipset_t chipset
; /* sub-module for tuning.. */
694 struct pci_dev
*pci_dev
; /* for pci chipsets */
695 struct ide_pci_device_s
*cds
; /* chipset device struct */
697 void (*rw_disk
)(ide_drive_t
*, struct request
*);
700 ide_hwif_ops_t
*hwifops
;
702 /* routine to program host for PIO mode */
703 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
704 /* routine to program host for DMA mode */
705 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
706 /* tweaks hardware to select drive */
707 void (*selectproc
)(ide_drive_t
*);
708 /* chipset polling based on hba specifics */
709 int (*reset_poll
)(ide_drive_t
*);
710 /* chipset specific changes to default for device-hba resets */
711 void (*pre_reset
)(ide_drive_t
*);
712 /* routine to reset controller after a disk reset */
713 void (*resetproc
)(ide_drive_t
*);
714 /* special interrupt handling for shared pci interrupts */
715 void (*intrproc
)(ide_drive_t
*);
716 /* special host masking for drive selection */
717 void (*maskproc
)(ide_drive_t
*, int);
718 /* check host's drive quirk list */
719 int (*quirkproc
)(ide_drive_t
*);
720 /* driver soft-power interface */
721 int (*busproc
)(ide_drive_t
*, int);
723 u8 (*mdma_filter
)(ide_drive_t
*);
724 u8 (*udma_filter
)(ide_drive_t
*);
726 void (*fixup
)(struct hwif_s
*);
728 void (*ata_input_data
)(ide_drive_t
*, void *, u32
);
729 void (*ata_output_data
)(ide_drive_t
*, void *, u32
);
731 void (*atapi_input_bytes
)(ide_drive_t
*, void *, u32
);
732 void (*atapi_output_bytes
)(ide_drive_t
*, void *, u32
);
734 int (*dma_setup
)(ide_drive_t
*);
735 void (*dma_exec_cmd
)(ide_drive_t
*, u8
);
736 void (*dma_start
)(ide_drive_t
*);
737 int (*ide_dma_end
)(ide_drive_t
*drive
);
738 int (*ide_dma_on
)(ide_drive_t
*drive
);
739 void (*dma_off_quietly
)(ide_drive_t
*drive
);
740 int (*ide_dma_test_irq
)(ide_drive_t
*drive
);
741 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
742 void (*dma_host_on
)(ide_drive_t
*drive
);
743 void (*dma_host_off
)(ide_drive_t
*drive
);
744 void (*dma_lost_irq
)(ide_drive_t
*drive
);
745 void (*dma_timeout
)(ide_drive_t
*drive
);
747 void (*OUTB
)(u8 addr
, unsigned long port
);
748 void (*OUTBSYNC
)(ide_drive_t
*drive
, u8 addr
, unsigned long port
);
749 void (*OUTW
)(u16 addr
, unsigned long port
);
750 void (*OUTSW
)(unsigned long port
, void *addr
, u32 count
);
751 void (*OUTSL
)(unsigned long port
, void *addr
, u32 count
);
753 u8 (*INB
)(unsigned long port
);
754 u16 (*INW
)(unsigned long port
);
755 void (*INSW
)(unsigned long port
, void *addr
, u32 count
);
756 void (*INSL
)(unsigned long port
, void *addr
, u32 count
);
758 /* dma physical region descriptor table (cpu view) */
759 unsigned int *dmatable_cpu
;
760 /* dma physical region descriptor table (dma view) */
761 dma_addr_t dmatable_dma
;
762 /* Scatter-gather list used to build the above */
763 struct scatterlist
*sg_table
;
764 int sg_max_nents
; /* Maximum number of entries in it */
765 int sg_nents
; /* Current number of entries in it */
766 int sg_dma_direction
; /* dma transfer direction */
768 /* data phase of the active command (currently only valid for PIO/DMA) */
773 struct scatterlist
*cursg
;
774 unsigned int cursg_ofs
;
776 int rqsize
; /* max sectors per request */
777 int irq
; /* our irq number */
779 unsigned long dma_master
; /* reference base addr dmabase */
780 unsigned long dma_base
; /* base addr for dma ports */
781 unsigned long dma_command
; /* dma command register */
782 unsigned long dma_vendor1
; /* dma vendor 1 register */
783 unsigned long dma_status
; /* dma status register */
784 unsigned long dma_vendor3
; /* dma vendor 3 register */
785 unsigned long dma_prdtable
; /* actual prd table address */
787 unsigned long config_data
; /* for use by chipset-specific code */
788 unsigned long select_data
; /* for use by chipset-specific code */
790 unsigned long extra_base
; /* extra addr for dma ports */
791 unsigned extra_ports
; /* number of extra dma ports */
793 unsigned noprobe
: 1; /* don't probe for this interface */
794 unsigned present
: 1; /* this interface exists */
795 unsigned hold
: 1; /* this interface is always present */
796 unsigned serialized
: 1; /* serialized all channel operation */
797 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
798 unsigned reset
: 1; /* reset after probe */
799 unsigned auto_poll
: 1; /* supports nop auto-poll */
800 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
801 unsigned no_io_32bit
: 1; /* 1 = can not do 32-bit IO ops */
802 unsigned mmio
: 1; /* host uses MMIO */
804 struct device gendev
;
805 struct completion gendev_rel_comp
; /* To deal with device release() */
807 void *hwif_data
; /* extra hwif data */
811 #ifdef CONFIG_BLK_DEV_IDEACPI
812 struct ide_acpi_hwif_link
*acpidata
;
814 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
817 * internal ide interrupt handler type
819 typedef ide_startstop_t (ide_pre_handler_t
)(ide_drive_t
*, struct request
*);
820 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
821 typedef int (ide_expiry_t
)(ide_drive_t
*);
823 typedef struct hwgroup_s
{
824 /* irq handler, if active */
825 ide_startstop_t (*handler
)(ide_drive_t
*);
826 /* irq handler, suspended if active */
827 ide_startstop_t (*handler_save
)(ide_drive_t
*);
828 /* BOOL: protects all fields below */
830 /* BOOL: wake us up on timer expiry */
831 unsigned int sleeping
: 1;
832 /* BOOL: polling active & poll_timeout field valid */
833 unsigned int polling
: 1;
834 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
835 unsigned int resetting
: 1;
839 /* ptr to current hwif in linked-list */
842 /* for pci chipsets */
843 struct pci_dev
*pci_dev
;
844 /* chipset device struct */
845 struct ide_pci_device_s
*cds
;
847 /* current request */
850 struct timer_list timer
;
851 /* local copy of current write rq */
853 /* timeout value during long polls */
854 unsigned long poll_timeout
;
855 /* queried upon timeouts */
856 int (*expiry
)(ide_drive_t
*);
857 /* ide_system_bus_speed */
862 unsigned char cmd_buf
[4];
865 typedef struct ide_driver_s ide_driver_t
;
867 extern struct mutex ide_setting_mtx
;
869 int set_io_32bit(ide_drive_t
*, int);
870 int set_pio_mode(ide_drive_t
*, int);
871 int set_using_dma(ide_drive_t
*, int);
873 #ifdef CONFIG_IDE_PROC_FS
875 * configurable drive settings
882 #define SETTING_READ (1 << 0)
883 #define SETTING_WRITE (1 << 1)
884 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
886 typedef int (ide_procset_t
)(ide_drive_t
*, int);
887 typedef struct ide_settings_s
{
898 struct ide_settings_s
*next
;
901 int ide_add_setting(ide_drive_t
*, const char *, int, int, int, int, int, int, void *, ide_procset_t
*set
);
904 * /proc/ide interface
909 read_proc_t
*read_proc
;
910 write_proc_t
*write_proc
;
913 void proc_ide_create(void);
914 void proc_ide_destroy(void);
915 void ide_proc_register_port(ide_hwif_t
*);
916 void ide_proc_unregister_port(ide_hwif_t
*);
917 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
918 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
920 void ide_add_generic_settings(ide_drive_t
*);
922 read_proc_t proc_ide_read_capacity
;
923 read_proc_t proc_ide_read_geometry
;
925 #ifdef CONFIG_BLK_DEV_IDEPCI
926 void ide_pci_create_host_proc(const char *, get_info_t
*);
930 * Standard exit stuff:
932 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
941 *start = page + off; \
945 static inline void proc_ide_create(void) { ; }
946 static inline void proc_ide_destroy(void) { ; }
947 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
948 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
949 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
950 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
951 static inline void ide_add_generic_settings(ide_drive_t
*drive
) { ; }
952 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
956 * Power Management step value (rq->pm->pm_step).
958 * The step value starts at 0 (ide_pm_state_start_suspend) for a
959 * suspend operation or 1000 (ide_pm_state_start_resume) for a
962 * For each step, the core calls the subdriver start_power_step() first.
964 * - ide_stopped : In this case, the core calls us back again unless
965 * step have been set to ide_power_state_completed.
966 * - ide_started : In this case, the channel is left busy until an
967 * async event (interrupt) occurs.
968 * Typically, start_power_step() will issue a taskfile request with
971 * Upon reception of the interrupt, the core will call complete_power_step()
972 * with the error code if any. This routine should update the step value
973 * and return. It should not start a new request. The core will call
974 * start_power_step for the new step value, unless step have been set to
975 * ide_power_state_completed.
977 * Subdrivers are expected to define their own additional power
978 * steps from 1..999 for suspend and from 1001..1999 for resume,
979 * other values are reserved for future use.
983 ide_pm_state_completed
= -1,
984 ide_pm_state_start_suspend
= 0,
985 ide_pm_state_start_resume
= 1000,
989 * Subdrivers support.
991 * The gendriver.owner field should be set to the module owner of this driver.
992 * The gendriver.name field should be set to the name of this driver
994 struct ide_driver_s
{
997 unsigned supports_dsc_overlap
: 1;
998 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
999 int (*end_request
)(ide_drive_t
*, int, int);
1000 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
1001 ide_startstop_t (*abort
)(ide_drive_t
*, struct request
*rq
);
1002 struct device_driver gen_driver
;
1003 int (*probe
)(ide_drive_t
*);
1004 void (*remove
)(ide_drive_t
*);
1005 void (*resume
)(ide_drive_t
*);
1006 void (*shutdown
)(ide_drive_t
*);
1007 #ifdef CONFIG_IDE_PROC_FS
1008 ide_proc_entry_t
*proc
;
1012 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1014 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*, unsigned, unsigned long);
1017 * ide_hwifs[] is the master data structure used to keep track
1018 * of just about everything in ide.c. Whenever possible, routines
1019 * should be using pointers to a drive (ide_drive_t *) or
1020 * pointers to a hwif (ide_hwif_t *), rather than indexing this
1021 * structure directly (the allocation/layout may change!).
1025 extern ide_hwif_t ide_hwifs
[]; /* master data repository */
1027 extern int noautodma
;
1029 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1030 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1031 int uptodate
, int nr_sectors
);
1034 * This is used on exit from the driver to designate the next irq handler
1035 * and also to start the safety timer.
1037 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1040 * This is used on exit from the driver to designate the next irq handler
1041 * and start the safety time safely and atomically from the IRQ handler
1042 * with respect to the command issue (which it also does)
1044 extern void ide_execute_command(ide_drive_t
*, task_ioreg_t cmd
, ide_handler_t
*, unsigned int, ide_expiry_t
*);
1046 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1049 * ide_error() takes action based on the error returned by the controller.
1050 * The caller should return immediately after invoking this.
1052 * (drive, msg, status)
1054 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1056 ide_startstop_t
__ide_abort(ide_drive_t
*, struct request
*);
1059 * Abort a running command on the controller triggering the abort
1060 * from a host side, non error situation
1063 extern ide_startstop_t
ide_abort(ide_drive_t
*, const char *);
1065 extern void ide_fix_driveid(struct hd_driveid
*);
1067 * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
1068 * removing leading/trailing blanks and compressing internal blanks.
1069 * It is primarily used to tidy up the model name/number fields as
1070 * returned by the WIN_[P]IDENTIFY commands.
1072 * (s, bytecount, byteswap)
1074 extern void ide_fixstring(u8
*, const int, const int);
1076 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1079 * Start a reset operation for an IDE interface.
1080 * The caller should return immediately after invoking this.
1082 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1085 * This function is intended to be used prior to invoking ide_do_drive_cmd().
1087 extern void ide_init_drive_cmd (struct request
*rq
);
1090 * "action" parameter type for ide_do_drive_cmd() below.
1093 ide_wait
, /* insert rq at end of list, and wait for it */
1094 ide_preempt
, /* insert rq in front of current request */
1095 ide_head_wait
, /* insert rq in front of current request and wait for it */
1096 ide_end
/* insert rq at end of list, but don't wait for it */
1099 extern int ide_do_drive_cmd(ide_drive_t
*, struct request
*, ide_action_t
);
1102 * Clean up after success/failure of an explicit drive cmd.
1103 * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD).
1104 * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_TASK_MASK).
1106 * (ide_drive_t *drive, u8 stat, u8 err)
1108 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1111 * Issue ATA command and wait for completion.
1112 * Use for implementing commands in kernel
1114 * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
1116 extern int ide_wait_cmd(ide_drive_t
*, u8
, u8
, u8
, u8
, u8
*);
1118 typedef struct ide_task_s
{
1120 * struct hd_drive_task_hdr tf;
1122 * struct hd_drive_hob_hdr hobf;
1123 * hob_struct_t hobf;
1125 task_ioreg_t tfRegister
[8];
1126 task_ioreg_t hobRegister
[8];
1127 ide_reg_valid_t tf_out_flags
;
1128 ide_reg_valid_t tf_in_flags
;
1131 ide_pre_handler_t
*prehandler
;
1132 ide_handler_t
*handler
;
1133 struct request
*rq
; /* copy of request */
1134 void *special
; /* valid_t generally */
1137 extern u32
ide_read_24(ide_drive_t
*);
1139 extern void SELECT_DRIVE(ide_drive_t
*);
1140 extern void SELECT_INTERRUPT(ide_drive_t
*);
1141 extern void SELECT_MASK(ide_drive_t
*, int);
1142 extern void QUIRK_LIST(ide_drive_t
*);
1144 extern int drive_is_ready(ide_drive_t
*);
1147 * taskfile io for disks for now...and builds request from ide_ioctl
1149 extern ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1152 * Special Flagged Register Validation Caller
1154 extern ide_startstop_t
flagged_taskfile(ide_drive_t
*, ide_task_t
*);
1156 extern ide_startstop_t
set_multmode_intr(ide_drive_t
*);
1157 extern ide_startstop_t
set_geometry_intr(ide_drive_t
*);
1158 extern ide_startstop_t
recal_intr(ide_drive_t
*);
1159 extern ide_startstop_t
task_no_data_intr(ide_drive_t
*);
1160 extern ide_startstop_t
task_in_intr(ide_drive_t
*);
1161 extern ide_startstop_t
pre_task_out_intr(ide_drive_t
*, struct request
*);
1163 extern int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*);
1165 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1166 int ide_cmd_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1167 int ide_task_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1169 extern int system_bus_clock(void);
1171 extern int ide_driveid_update(ide_drive_t
*);
1172 extern int ide_ata66_check(ide_drive_t
*, ide_task_t
*);
1173 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1174 extern u8
eighty_ninty_three (ide_drive_t
*);
1175 extern int set_transfer(ide_drive_t
*, ide_task_t
*);
1176 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1178 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1181 * ide_stall_queue() can be used by a drive to give excess bandwidth back
1182 * to the hwgroup by sleeping for timeout jiffies.
1184 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1186 extern int ide_spin_wait_hwgroup(ide_drive_t
*);
1187 extern void ide_timer_expiry(unsigned long);
1188 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1189 extern void do_ide_request(struct request_queue
*);
1191 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1193 extern int ideprobe_init(void);
1195 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1196 extern void ide_scan_pcibus(int scan_direction
) __init
;
1197 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1198 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1200 #define ide_pci_register_driver(d) pci_register_driver(d)
1203 void ide_pci_setup_ports(struct pci_dev
*, struct ide_pci_device_s
*, int, ata_index_t
*);
1204 extern void ide_setup_pci_noise (struct pci_dev
*dev
, struct ide_pci_device_s
*d
);
1206 extern void default_hwif_iops(ide_hwif_t
*);
1207 extern void default_hwif_mmiops(ide_hwif_t
*);
1208 extern void default_hwif_transport(ide_hwif_t
*);
1210 typedef struct ide_pci_enablebit_s
{
1211 u8 reg
; /* byte pci reg holding the enable-bit */
1212 u8 mask
; /* mask to isolate the enable-bit */
1213 u8 val
; /* value of masked reg when "enabled" */
1214 } ide_pci_enablebit_t
;
1217 /* Uses ISA control ports not PCI ones. */
1218 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1219 /* single port device */
1220 IDE_HFLAG_SINGLE
= (1 << 1),
1221 /* don't use legacy PIO blacklist */
1222 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1223 /* don't use conservative PIO "downgrade" */
1224 IDE_HFLAG_PIO_NO_DOWNGRADE
= (1 << 3),
1225 /* use PIO8/9 for prefetch off/on */
1226 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1227 /* use PIO6/7 for fast-devsel off/on */
1228 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1229 /* use 100-102 and 200-202 PIO values to set DMA modes */
1230 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1232 * keep DMA setting when programming PIO mode, may be used only
1233 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1235 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1236 /* program host for the transfer mode after programming device */
1237 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1238 /* don't program host/device for the transfer mode ("smart" hosts) */
1239 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1240 /* trust BIOS for programming chipset/device for DMA */
1241 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1242 /* host uses VDMA */
1243 IDE_HFLAG_VDMA
= (1 << 11),
1244 /* ATAPI DMA is unsupported */
1245 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1246 /* set if host is a "bootable" controller */
1247 IDE_HFLAG_BOOTABLE
= (1 << 13),
1248 /* host doesn't support DMA */
1249 IDE_HFLAG_NO_DMA
= (1 << 14),
1250 /* check if host is PCI IDE device before allowing DMA */
1251 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1252 /* host is CS5510/CS5520 */
1253 IDE_HFLAG_CS5520
= (1 << 16),
1255 IDE_HFLAG_NO_LBA48
= (1 << 17),
1257 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1258 /* data FIFO is cleared by an error */
1259 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1260 /* serialize ports */
1261 IDE_HFLAG_SERIALIZE
= (1 << 20),
1262 /* use legacy IRQs */
1263 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1264 /* force use of legacy IRQs */
1265 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1266 /* limit LBA48 requests to 256 sectors */
1267 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1268 /* use 32-bit I/O ops */
1269 IDE_HFLAG_IO_32BIT
= (1 << 24),
1271 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1274 #ifdef CONFIG_BLK_DEV_OFFBOARD
1275 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1277 # define IDE_HFLAG_OFF_BOARD 0
1280 typedef struct ide_pci_device_s
{
1282 unsigned int (*init_chipset
)(struct pci_dev
*, const char *);
1283 void (*init_iops
)(ide_hwif_t
*);
1284 void (*init_hwif
)(ide_hwif_t
*);
1285 void (*init_dma
)(ide_hwif_t
*, unsigned long);
1286 void (*fixup
)(ide_hwif_t
*);
1287 ide_pci_enablebit_t enablebits
[2];
1288 hwif_chipset_t chipset
;
1297 extern int ide_setup_pci_device(struct pci_dev
*, ide_pci_device_t
*);
1298 extern int ide_setup_pci_devices(struct pci_dev
*, struct pci_dev
*, ide_pci_device_t
*);
1300 void ide_map_sg(ide_drive_t
*, struct request
*);
1301 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1303 #define BAD_DMA_DRIVE 0
1304 #define GOOD_DMA_DRIVE 1
1306 struct drive_list_entry
{
1307 const char *id_model
;
1308 const char *id_firmware
;
1311 int ide_in_drive_list(struct hd_driveid
*, const struct drive_list_entry
*);
1313 #ifdef CONFIG_BLK_DEV_IDEDMA
1314 int __ide_dma_bad_drive(ide_drive_t
*);
1316 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1318 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1320 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1323 void ide_dma_off(ide_drive_t
*);
1324 void ide_dma_verbose(ide_drive_t
*);
1325 int ide_set_dma(ide_drive_t
*);
1326 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1328 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1329 extern int ide_build_sglist(ide_drive_t
*, struct request
*);
1330 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1331 extern void ide_destroy_dmatable(ide_drive_t
*);
1332 extern int ide_release_dma(ide_hwif_t
*);
1333 extern void ide_setup_dma(ide_hwif_t
*, unsigned long, unsigned int);
1335 void ide_dma_host_off(ide_drive_t
*);
1336 void ide_dma_off_quietly(ide_drive_t
*);
1337 void ide_dma_host_on(ide_drive_t
*);
1338 extern int __ide_dma_on(ide_drive_t
*);
1339 extern int ide_dma_setup(ide_drive_t
*);
1340 extern void ide_dma_start(ide_drive_t
*);
1341 extern int __ide_dma_end(ide_drive_t
*);
1342 extern void ide_dma_lost_irq(ide_drive_t
*);
1343 extern void ide_dma_timeout(ide_drive_t
*);
1344 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1347 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1348 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1349 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1350 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1351 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1352 #endif /* CONFIG_BLK_DEV_IDEDMA */
1354 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1355 static inline void ide_release_dma(ide_hwif_t
*drive
) {;}
1358 #ifdef CONFIG_BLK_DEV_IDEACPI
1359 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1360 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1361 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1362 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1363 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1365 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1366 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1367 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1368 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1369 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1372 extern int ide_hwif_request_regions(ide_hwif_t
*hwif
);
1373 extern void ide_hwif_release_regions(ide_hwif_t
* hwif
);
1374 extern void ide_unregister (unsigned int index
);
1376 void ide_register_region(struct gendisk
*);
1377 void ide_unregister_region(struct gendisk
*);
1379 void ide_undecoded_slave(ide_hwif_t
*);
1381 extern int probe_hwif_init(ide_hwif_t
*);
1383 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1385 return hwif
->hwif_data
;
1388 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1390 hwif
->hwif_data
= data
;
1394 extern char *ide_xfer_verbose(u8 xfer_rate
);
1395 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1396 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1398 static inline int ide_dev_has_iordy(struct hd_driveid
*id
)
1400 return ((id
->field_valid
& 2) && (id
->capability
& 8)) ? 1 : 0;
1403 static inline int ide_dev_is_sata(struct hd_driveid
*id
)
1406 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1407 * verifying that word 80 by casting it to a signed type --
1408 * this trick allows us to filter out the reserved values of
1409 * 0x0000 and 0xffff along with the earlier ATA revisions...
1411 if (id
->hw_config
== 0 && (short)id
->major_rev_num
>= 0x0020)
1416 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1418 typedef struct ide_pio_timings_s
{
1419 int setup_time
; /* Address setup (ns) minimum */
1420 int active_time
; /* Active pulse (ns) minimum */
1421 int cycle_time
; /* Cycle time (ns) minimum = */
1422 /* active + recovery (+ setup for some chips) */
1423 } ide_pio_timings_t
;
1425 unsigned int ide_pio_cycle_time(ide_drive_t
*, u8
);
1426 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1427 extern const ide_pio_timings_t ide_pio_timings
[6];
1429 int ide_set_pio_mode(ide_drive_t
*, u8
);
1430 int ide_set_dma_mode(ide_drive_t
*, u8
);
1432 void ide_set_pio(ide_drive_t
*, u8
);
1434 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1436 ide_set_pio(drive
, 255);
1439 extern spinlock_t ide_lock
;
1440 extern struct mutex ide_cfg_mtx
;
1442 * Structure locking:
1444 * ide_cfg_mtx and ide_lock together protect changes to
1445 * ide_hwif_t->{next,hwgroup}
1448 * ide_hwgroup_t->busy: ide_lock
1449 * ide_hwgroup_t->hwif: ide_lock
1450 * ide_hwif_t->mate: constant, no locking
1451 * ide_drive_t->hwif: constant, no locking
1454 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1456 extern struct bus_type ide_bus_type
;
1458 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1459 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1461 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1462 #define ide_id_has_flush_cache_ext(id) \
1463 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1465 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1467 struct pci_dev
*dev
= hwif
->pci_dev
;
1468 return dev
? pcibus_to_node(dev
->bus
) : -1;
1471 static inline ide_drive_t
*ide_get_paired_drive(ide_drive_t
*drive
)
1473 ide_hwif_t
*hwif
= HWIF(drive
);
1475 return &hwif
->drives
[(drive
->dn
^ 1) & 1];