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/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #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/mutex.h>
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Probably not wise to fiddle with these
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
43 /* Error codes returned in rq->errors to the higher part of the driver. */
45 IDE_DRV_ERROR_GENERAL
= 101,
46 IDE_DRV_ERROR_FILEMARK
= 102,
47 IDE_DRV_ERROR_EOD
= 103,
51 * Definitions for accessing IDE controller registers
53 #define IDE_NR_PORTS (10)
56 unsigned long data_addr
;
59 unsigned long error_addr
; /* read: error */
60 unsigned long feature_addr
; /* write: feature */
63 unsigned long nsect_addr
;
64 unsigned long lbal_addr
;
65 unsigned long lbam_addr
;
66 unsigned long lbah_addr
;
68 unsigned long device_addr
;
71 unsigned long status_addr
; /* read: status */
72 unsigned long command_addr
; /* write: command */
75 unsigned long ctl_addr
;
77 unsigned long irq_addr
;
80 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
82 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
83 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
84 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
85 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
87 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
89 #define SATA_NR_PORTS (3) /* 16 possible ?? */
91 #define SATA_STATUS_OFFSET (0)
92 #define SATA_ERROR_OFFSET (1)
93 #define SATA_CONTROL_OFFSET (2)
96 * Our Physical Region Descriptor (PRD) table should be large enough
97 * to handle the biggest I/O request we are likely to see. Since requests
98 * can have no more than 256 sectors, and since the typical blocksize is
99 * two or more sectors, we could get by with a limit of 128 entries here for
100 * the usual worst case. Most requests seem to include some contiguous blocks,
101 * further reducing the number of table entries required.
103 * The driver reverts to PIO mode for individual requests that exceed
104 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
105 * 100% of all crazy scenarios here is not necessary.
107 * As it turns out though, we must allocate a full 4KB page for this,
108 * so the two PRD tables (ide0 & ide1) will each get half of that,
109 * allowing each to have about 256 entries (8 bytes each) from this.
112 #define PRD_ENTRIES 256
115 * Some more useful definitions
117 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
118 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
119 #define SECTOR_SIZE 512
122 * Timeouts for various operations:
125 /* spec allows up to 20ms */
126 WAIT_DRQ
= HZ
/ 10, /* 100ms */
127 /* some laptops are very slow */
128 WAIT_READY
= 5 * HZ
, /* 5s */
129 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
130 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
131 /* worst case when spinning up */
132 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
133 /* maximum wait for an IRQ to happen */
134 WAIT_CMD
= 10 * HZ
, /* 10s */
135 /* Some drives require a longer IRQ timeout. */
136 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
138 * Some drives (for example, Seagate STT3401A Travan) require a very
139 * long timeout, because they don't return an interrupt or clear their
140 * BSY bit until after the command completes (even retension commands).
142 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
143 /* minimum sleep time */
144 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
148 * Op codes for special requests to be handled by ide_special_rq().
149 * Values should be in the range of 0x20 to 0x3f.
151 #define REQ_DRIVE_RESET 0x20
152 #define REQ_DEVSET_EXEC 0x21
153 #define REQ_PARK_HEADS 0x22
154 #define REQ_UNPARK_HEADS 0x23
157 * Check for an interrupt and acknowledge the interrupt status
160 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
166 enum { ide_unknown
, ide_generic
, ide_pci
,
167 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
168 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
169 ide_4drives
, ide_pmac
, ide_acorn
,
170 ide_au1xxx
, ide_palm3710
173 typedef u8 hwif_chipset_t
;
176 * Structure to hold all information about the location of this port
178 typedef struct hw_regs_s
{
180 struct ide_io_ports io_ports
;
181 unsigned long io_ports_array
[IDE_NR_PORTS
];
184 int irq
; /* our irq number */
185 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
186 hwif_chipset_t chipset
;
187 struct device
*dev
, *parent
;
188 unsigned long config
;
191 static inline void ide_std_init_ports(hw_regs_t
*hw
,
192 unsigned long io_addr
,
193 unsigned long ctl_addr
)
197 for (i
= 0; i
<= 7; i
++)
198 hw
->io_ports_array
[i
] = io_addr
++;
200 hw
->io_ports
.ctl_addr
= ctl_addr
;
206 * Now for the data we need to maintain per-drive: ide_drive_t
209 #define ide_scsi 0x21
210 #define ide_disk 0x20
211 #define ide_optical 0x7
212 #define ide_cdrom 0x5
214 #define ide_floppy 0x0
217 * Special Driver Flags
219 * set_geometry : respecify drive geometry
220 * recalibrate : seek to cyl 0
221 * set_multmode : set multmode count
227 unsigned set_geometry
: 1;
228 unsigned recalibrate
: 1;
229 unsigned set_multmode
: 1;
230 unsigned reserved
: 5;
235 * Status returned from various ide_ functions
238 ide_stopped
, /* no drive operation was started */
239 ide_started
, /* a drive operation was started, handler was set */
243 IDE_VALID_ERROR
= (1 << 1),
244 IDE_VALID_FEATURE
= IDE_VALID_ERROR
,
245 IDE_VALID_NSECT
= (1 << 2),
246 IDE_VALID_LBAL
= (1 << 3),
247 IDE_VALID_LBAM
= (1 << 4),
248 IDE_VALID_LBAH
= (1 << 5),
249 IDE_VALID_DEVICE
= (1 << 6),
250 IDE_VALID_LBA
= IDE_VALID_LBAL
|
253 IDE_VALID_OUT_TF
= IDE_VALID_FEATURE
|
256 IDE_VALID_IN_TF
= IDE_VALID_NSECT
|
258 IDE_VALID_OUT_HOB
= IDE_VALID_OUT_TF
,
259 IDE_VALID_IN_HOB
= IDE_VALID_ERROR
|
265 IDE_TFLAG_LBA48
= (1 << 0),
266 IDE_TFLAG_WRITE
= (1 << 1),
267 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 2),
268 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 3),
269 /* force 16-bit I/O operations */
270 IDE_TFLAG_IO_16BIT
= (1 << 4),
271 /* struct ide_cmd was allocated using kmalloc() */
272 IDE_TFLAG_DYN
= (1 << 5),
273 IDE_TFLAG_FS
= (1 << 6),
274 IDE_TFLAG_MULTI_PIO
= (1 << 7),
278 IDE_FTFLAG_FLAGGED
= (1 << 0),
279 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
280 IDE_FTFLAG_OUT_DATA
= (1 << 2),
281 IDE_FTFLAG_IN_DATA
= (1 << 3),
284 struct ide_taskfile
{
285 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
286 /* 1-5: additional data to support LBA48 */
288 u8 hob_error
; /* read: error */
289 u8 hob_feature
; /* write: feature */
297 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
300 u8 error
; /* read: error */
301 u8 feature
; /* write: feature */
304 u8 nsect
; /* 8: number of sectors */
305 u8 lbal
; /* 9: LBA low */
306 u8 lbam
; /* 10: LBA mid */
307 u8 lbah
; /* 11: LBA high */
309 u8 device
; /* 12: device select */
312 u8 status
; /* read: status */
313 u8 command
; /* write: command */
319 struct ide_taskfile tf
;
331 u8 ftf_flags
; /* for TASKFILE ioctl */
334 int sg_nents
; /* number of sg entries */
336 int sg_dma_direction
; /* DMA transfer direction */
340 unsigned int last_xfer_len
;
342 struct scatterlist
*cursg
;
343 unsigned int cursg_ofs
;
345 struct request
*rq
; /* copy of request */
346 void *special
; /* valid_t generally */
349 /* ATAPI packet command flags */
351 /* set when an error is considered normal - no retry (ide-tape) */
352 PC_FLAG_ABORT
= (1 << 0),
353 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
354 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
355 PC_FLAG_DMA_OK
= (1 << 3),
356 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
357 PC_FLAG_DMA_ERROR
= (1 << 5),
358 PC_FLAG_WRITING
= (1 << 6),
362 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
363 * This is used for several packet commands (not for READ/WRITE commands).
365 #define IDE_PC_BUFFER_SIZE 64
366 #define ATAPI_WAIT_PC (60 * HZ)
368 struct ide_atapi_pc
{
369 /* actual packet bytes */
371 /* incremented on each retry */
375 /* bytes to transfer */
377 /* bytes actually transferred */
382 /* current buffer position */
385 /* missing/available data on the current buffer */
388 /* the corresponding request */
394 * those are more or less driver-specific and some of them are subject
395 * to change/removal later.
397 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
400 struct idetape_bh
*bh
;
403 unsigned long timeout
;
409 #ifdef CONFIG_BLK_DEV_IDEACPI
410 struct ide_acpi_drive_link
;
411 struct ide_acpi_hwif_link
;
416 struct ide_disk_ops
{
417 int (*check
)(struct ide_drive_s
*, const char *);
418 int (*get_capacity
)(struct ide_drive_s
*);
419 void (*setup
)(struct ide_drive_s
*);
420 void (*flush
)(struct ide_drive_s
*);
421 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
422 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
424 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
426 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
427 fmode_t
, unsigned int, unsigned long);
430 /* ATAPI device flags */
432 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
435 /* Drive cannot eject the disc. */
436 IDE_AFLAG_NO_EJECT
= (1 << 1),
437 /* Drive is a pre ATAPI 1.2 drive. */
438 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
439 /* TOC addresses are in BCD. */
440 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
441 /* TOC track numbers are in BCD. */
442 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
443 /* Saved TOC information is current. */
444 IDE_AFLAG_TOC_VALID
= (1 << 6),
445 /* We think that the drive door is locked. */
446 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
447 /* SET_CD_SPEED command is unsupported. */
448 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
449 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
450 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
451 IDE_AFLAG_SANYO_3CD
= (1 << 11),
452 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
453 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
454 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
457 /* Avoid commands not supported in Clik drive */
458 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
459 /* Requires BH algorithm for packets */
460 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
461 /* Supports format progress report */
462 IDE_AFLAG_SRFP
= (1 << 17),
465 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
466 /* 0 When the tape position is unknown */
467 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
468 /* Device already opened */
469 IDE_AFLAG_BUSY
= (1 << 20),
470 /* Attempt to auto-detect the current user block size */
471 IDE_AFLAG_DETECT_BS
= (1 << 21),
472 /* Currently on a filemark */
473 IDE_AFLAG_FILEMARK
= (1 << 22),
474 /* 0 = no tape is loaded, so we don't rewind after ejecting */
475 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
477 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
482 /* restore settings after device reset */
483 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
484 /* device is using DMA for read/write */
485 IDE_DFLAG_USING_DMA
= (1 << 1),
486 /* okay to unmask other IRQs */
487 IDE_DFLAG_UNMASK
= (1 << 2),
488 /* don't attempt flushes */
489 IDE_DFLAG_NOFLUSH
= (1 << 3),
491 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
492 /* give potential excess bandwidth */
493 IDE_DFLAG_NICE1
= (1 << 5),
494 /* device is physically present */
495 IDE_DFLAG_PRESENT
= (1 << 6),
496 /* id read from device (synthetic if not set) */
497 IDE_DFLAG_ID_READ
= (1 << 8),
498 IDE_DFLAG_NOPROBE
= (1 << 9),
499 /* need to do check_media_change() */
500 IDE_DFLAG_REMOVABLE
= (1 << 10),
501 /* needed for removable devices */
502 IDE_DFLAG_ATTACH
= (1 << 11),
503 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
504 /* disallow setting unmask bit */
505 IDE_DFLAG_NO_UNMASK
= (1 << 13),
506 /* disallow enabling 32-bit I/O */
507 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
508 /* for removable only: door lock/unlock works */
509 IDE_DFLAG_DOORLOCKING
= (1 << 15),
511 IDE_DFLAG_NODMA
= (1 << 16),
512 /* powermanagment told us not to do anything, so sleep nicely */
513 IDE_DFLAG_BLOCKED
= (1 << 17),
514 /* sleeping & sleep field valid */
515 IDE_DFLAG_SLEEPING
= (1 << 18),
516 IDE_DFLAG_POST_RESET
= (1 << 19),
517 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
518 IDE_DFLAG_LBA48
= (1 << 21),
519 /* status of write cache */
520 IDE_DFLAG_WCACHE
= (1 << 22),
521 /* used for ignoring ATA_DF */
522 IDE_DFLAG_NOWERR
= (1 << 23),
523 /* retrying in PIO */
524 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
525 IDE_DFLAG_LBA
= (1 << 25),
526 /* don't unload heads */
527 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
528 /* heads unloaded, please don't reset port */
529 IDE_DFLAG_PARKED
= (1 << 27),
530 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
532 IDE_DFLAG_WP
= (1 << 29),
533 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
537 char name
[4]; /* drive name, such as "hda" */
538 char driver_req
[10]; /* requests specific driver */
540 struct request_queue
*queue
; /* request queue */
542 struct request
*rq
; /* current request */
543 void *driver_data
; /* extra driver data */
544 u16
*id
; /* identification info */
545 #ifdef CONFIG_IDE_PROC_FS
546 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
547 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
549 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
551 const struct ide_disk_ops
*disk_ops
;
553 unsigned long dev_flags
;
555 unsigned long sleep
; /* sleep until this time */
556 unsigned long timeout
; /* max time to wait for irq */
558 special_t special
; /* special action flags */
560 u8 select
; /* basic drive/head select reg value */
561 u8 retry_pio
; /* retrying dma capable host in pio */
562 u8 waiting_for_dma
; /* dma currently in progress */
563 u8 dma
; /* atapi dma flag */
565 u8 quirk_list
; /* considered quirky, set for a specific host */
566 u8 init_speed
; /* transfer rate set at boot */
567 u8 current_speed
; /* current transfer rate set */
568 u8 desired_speed
; /* desired transfer rate set */
569 u8 dn
; /* now wide spread use */
570 u8 acoustic
; /* acoustic management */
571 u8 media
; /* disk, cdrom, tape, floppy, ... */
572 u8 ready_stat
; /* min status value for drive ready */
573 u8 mult_count
; /* current multiple sector setting */
574 u8 mult_req
; /* requested multiple sector setting */
575 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
576 u8 bad_wstat
; /* used for ignoring ATA_DF */
577 u8 head
; /* "real" number of heads */
578 u8 sect
; /* "real" sectors per track */
579 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
580 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
582 /* delay this long before sending packet command */
585 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
586 unsigned int cyl
; /* "real" number of cyls */
587 unsigned int drive_data
; /* used by set_pio_mode/dev_select() */
588 unsigned int failures
; /* current failure count */
589 unsigned int max_failures
; /* maximum allowed failure count */
590 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
592 u64 capacity64
; /* total number of sectors */
594 int lun
; /* logical unit */
595 int crc_count
; /* crc counter to reduce drive speed */
597 unsigned long debug_mask
; /* debugging levels switch */
599 #ifdef CONFIG_BLK_DEV_IDEACPI
600 struct ide_acpi_drive_link
*acpidata
;
602 struct list_head list
;
603 struct device gendev
;
604 struct completion gendev_rel_comp
; /* to deal with device release() */
606 /* current packet command */
607 struct ide_atapi_pc
*pc
;
609 /* last failed packet command */
610 struct ide_atapi_pc
*failed_pc
;
612 /* callback for packet commands */
613 int (*pc_callback
)(struct ide_drive_s
*, int);
615 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
616 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
619 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
621 unsigned long atapi_flags
;
623 struct ide_atapi_pc request_sense_pc
;
624 struct request request_sense_rq
;
627 typedef struct ide_drive_s ide_drive_t
;
629 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
631 #define to_ide_drv(obj, cont_type) \
632 container_of(obj, struct cont_type, dev)
634 #define ide_drv_g(disk, cont_type) \
635 container_of((disk)->private_data, struct cont_type, driver)
637 struct ide_port_info
;
640 void (*exec_command
)(struct hwif_s
*, u8
);
641 u8 (*read_status
)(struct hwif_s
*);
642 u8 (*read_altstatus
)(struct hwif_s
*);
643 void (*write_devctl
)(struct hwif_s
*, u8
);
645 void (*dev_select
)(ide_drive_t
*);
646 void (*tf_load
)(ide_drive_t
*, struct ide_cmd
*);
647 void (*tf_read
)(ide_drive_t
*, struct ide_cmd
*);
649 void (*input_data
)(ide_drive_t
*, struct ide_cmd
*,
650 void *, unsigned int);
651 void (*output_data
)(ide_drive_t
*, struct ide_cmd
*,
652 void *, unsigned int);
655 extern const struct ide_tp_ops default_tp_ops
;
658 * struct ide_port_ops - IDE port operations
660 * @init_dev: host specific initialization of a device
661 * @set_pio_mode: routine to program host for PIO mode
662 * @set_dma_mode: routine to program host for DMA mode
663 * @reset_poll: chipset polling based on hba specifics
664 * @pre_reset: chipset specific changes to default for device-hba resets
665 * @resetproc: routine to reset controller after a disk reset
666 * @maskproc: special host masking for drive selection
667 * @quirkproc: check host's drive quirk list
668 * @clear_irq: clear IRQ
670 * @mdma_filter: filter MDMA modes
671 * @udma_filter: filter UDMA modes
673 * @cable_detect: detect cable type
675 struct ide_port_ops
{
676 void (*init_dev
)(ide_drive_t
*);
677 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
678 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
679 int (*reset_poll
)(ide_drive_t
*);
680 void (*pre_reset
)(ide_drive_t
*);
681 void (*resetproc
)(ide_drive_t
*);
682 void (*maskproc
)(ide_drive_t
*, int);
683 void (*quirkproc
)(ide_drive_t
*);
684 void (*clear_irq
)(ide_drive_t
*);
686 u8 (*mdma_filter
)(ide_drive_t
*);
687 u8 (*udma_filter
)(ide_drive_t
*);
689 u8 (*cable_detect
)(struct hwif_s
*);
693 void (*dma_host_set
)(struct ide_drive_s
*, int);
694 int (*dma_setup
)(struct ide_drive_s
*, struct ide_cmd
*);
695 void (*dma_start
)(struct ide_drive_s
*);
696 int (*dma_end
)(struct ide_drive_s
*);
697 int (*dma_test_irq
)(struct ide_drive_s
*);
698 void (*dma_lost_irq
)(struct ide_drive_s
*);
699 /* below ones are optional */
700 int (*dma_check
)(struct ide_drive_s
*, struct ide_cmd
*);
701 int (*dma_timer_expiry
)(struct ide_drive_s
*);
702 void (*dma_clear
)(struct ide_drive_s
*);
704 * The following method is optional and only required to be
705 * implemented for the SFF-8038i compatible controllers.
707 u8 (*dma_sff_read_status
)(struct hwif_s
*);
712 typedef struct hwif_s
{
713 struct hwif_s
*mate
; /* other hwif from same PCI chip */
714 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
716 struct ide_host
*host
;
718 char name
[6]; /* name of interface, eg. "ide0" */
720 struct ide_io_ports io_ports
;
722 unsigned long sata_scr
[SATA_NR_PORTS
];
724 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
726 u8 major
; /* our major number */
727 u8 index
; /* 0 for ide0; 1 for ide1; ... */
728 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
738 u8 cbl
; /* cable type */
740 hwif_chipset_t chipset
; /* sub-module for tuning.. */
744 ide_ack_intr_t
*ack_intr
;
746 void (*rw_disk
)(ide_drive_t
*, struct request
*);
748 const struct ide_tp_ops
*tp_ops
;
749 const struct ide_port_ops
*port_ops
;
750 const struct ide_dma_ops
*dma_ops
;
752 /* dma physical region descriptor table (cpu view) */
753 unsigned int *dmatable_cpu
;
754 /* dma physical region descriptor table (dma view) */
755 dma_addr_t dmatable_dma
;
757 /* maximum number of PRD table entries */
759 /* PRD entry size in bytes */
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 */
766 struct ide_cmd cmd
; /* current command */
768 int rqsize
; /* max sectors per request */
769 int irq
; /* our irq number */
771 unsigned long dma_base
; /* base addr for dma ports */
773 unsigned long config_data
; /* for use by chipset-specific code */
774 unsigned long select_data
; /* for use by chipset-specific code */
776 unsigned long extra_base
; /* extra addr for dma ports */
777 unsigned extra_ports
; /* number of extra dma ports */
779 unsigned present
: 1; /* this interface exists */
780 unsigned busy
: 1; /* serializes devices on a port */
782 struct device gendev
;
783 struct device
*portdev
;
785 struct completion gendev_rel_comp
; /* To deal with device release() */
787 void *hwif_data
; /* extra hwif data */
789 #ifdef CONFIG_BLK_DEV_IDEACPI
790 struct ide_acpi_hwif_link
*acpidata
;
793 /* IRQ handler, if active */
794 ide_startstop_t (*handler
)(ide_drive_t
*);
796 /* BOOL: polling active & poll_timeout field valid */
797 unsigned int polling
: 1;
800 ide_drive_t
*cur_dev
;
802 /* current request */
806 struct timer_list timer
;
807 /* timeout value during long polls */
808 unsigned long poll_timeout
;
809 /* queried upon timeouts */
810 int (*expiry
)(ide_drive_t
*);
816 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
818 #define MAX_HOST_PORTS 4
821 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
822 unsigned int n_ports
;
823 struct device
*dev
[2];
825 int (*init_chipset
)(struct pci_dev
*);
827 void (*get_lock
)(irq_handler_t
, void *);
828 void (*release_lock
)(void);
830 irq_handler_t irq_handler
;
832 unsigned long host_flags
;
837 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
839 /* used for hosts requiring serialization */
840 volatile unsigned long host_busy
;
843 #define IDE_HOST_BUSY 0
846 * internal ide interrupt handler type
848 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
849 typedef int (ide_expiry_t
)(ide_drive_t
*);
851 /* used by ide-cd, ide-floppy, etc. */
852 typedef void (xfer_func_t
)(ide_drive_t
*, struct ide_cmd
*, void *, unsigned);
854 extern struct mutex ide_setting_mtx
;
857 * configurable drive settings
860 #define DS_SYNC (1 << 0)
863 int (*get
)(ide_drive_t
*);
864 int (*set
)(ide_drive_t
*, int);
868 #define __DEVSET(_flags, _get, _set) { \
874 #define ide_devset_get(name, field) \
875 static int get_##name(ide_drive_t *drive) \
877 return drive->field; \
880 #define ide_devset_set(name, field) \
881 static int set_##name(ide_drive_t *drive, int arg) \
883 drive->field = arg; \
887 #define ide_devset_get_flag(name, flag) \
888 static int get_##name(ide_drive_t *drive) \
890 return !!(drive->dev_flags & flag); \
893 #define ide_devset_set_flag(name, flag) \
894 static int set_##name(ide_drive_t *drive, int arg) \
897 drive->dev_flags |= flag; \
899 drive->dev_flags &= ~flag; \
903 #define __IDE_DEVSET(_name, _flags, _get, _set) \
904 const struct ide_devset ide_devset_##_name = \
905 __DEVSET(_flags, _get, _set)
907 #define IDE_DEVSET(_name, _flags, _get, _set) \
908 static __IDE_DEVSET(_name, _flags, _get, _set)
910 #define ide_devset_rw(_name, _func) \
911 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
913 #define ide_devset_w(_name, _func) \
914 IDE_DEVSET(_name, 0, NULL, set_##_func)
916 #define ide_ext_devset_rw(_name, _func) \
917 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
919 #define ide_ext_devset_rw_sync(_name, _func) \
920 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
922 #define ide_decl_devset(_name) \
923 extern const struct ide_devset ide_devset_##_name
925 ide_decl_devset(io_32bit
);
926 ide_decl_devset(keepsettings
);
927 ide_decl_devset(pio_mode
);
928 ide_decl_devset(unmaskirq
);
929 ide_decl_devset(using_dma
);
931 #ifdef CONFIG_IDE_PROC_FS
933 * /proc/ide interface
936 #define ide_devset_rw_field(_name, _field) \
937 ide_devset_get(_name, _field); \
938 ide_devset_set(_name, _field); \
939 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
941 #define ide_devset_rw_flag(_name, _field) \
942 ide_devset_get_flag(_name, _field); \
943 ide_devset_set_flag(_name, _field); \
944 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
946 struct ide_proc_devset
{
948 const struct ide_devset
*setting
;
950 int (*mulf
)(ide_drive_t
*);
951 int (*divf
)(ide_drive_t
*);
954 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
955 .name = __stringify(_name), \
956 .setting = &ide_devset_##_name, \
963 #define IDE_PROC_DEVSET(_name, _min, _max) \
964 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
969 read_proc_t
*read_proc
;
970 write_proc_t
*write_proc
;
973 void proc_ide_create(void);
974 void proc_ide_destroy(void);
975 void ide_proc_register_port(ide_hwif_t
*);
976 void ide_proc_port_register_devices(ide_hwif_t
*);
977 void ide_proc_unregister_device(ide_drive_t
*);
978 void ide_proc_unregister_port(ide_hwif_t
*);
979 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
980 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
982 read_proc_t proc_ide_read_capacity
;
983 read_proc_t proc_ide_read_geometry
;
986 * Standard exit stuff:
988 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
997 *start = page + off; \
1001 static inline void proc_ide_create(void) { ; }
1002 static inline void proc_ide_destroy(void) { ; }
1003 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1004 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1005 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1006 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1007 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
1008 struct ide_driver
*driver
) { ; }
1009 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
1010 struct ide_driver
*driver
) { ; }
1011 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1015 /* enter/exit functions */
1016 IDE_DBG_FUNC
= (1 << 0),
1017 /* sense key/asc handling */
1018 IDE_DBG_SENSE
= (1 << 1),
1019 /* packet commands handling */
1020 IDE_DBG_PC
= (1 << 2),
1021 /* request handling */
1022 IDE_DBG_RQ
= (1 << 3),
1023 /* driver probing/setup */
1024 IDE_DBG_PROBE
= (1 << 4),
1027 /* DRV_NAME has to be defined in the driver before using the macro below */
1028 #define __ide_debug_log(lvl, fmt, args...) \
1030 if (unlikely(drive->debug_mask & lvl)) \
1031 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1032 __func__, ## args); \
1036 * Power Management state machine (rq->pm->pm_step).
1038 * For each step, the core calls ide_start_power_step() first.
1040 * - ide_stopped : In this case, the core calls us back again unless
1041 * step have been set to ide_power_state_completed.
1042 * - ide_started : In this case, the channel is left busy until an
1043 * async event (interrupt) occurs.
1044 * Typically, ide_start_power_step() will issue a taskfile request with
1047 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1048 * with the error code if any. This routine should update the step value
1049 * and return. It should not start a new request. The core will call
1050 * ide_start_power_step() for the new step value, unless step have been
1051 * set to IDE_PM_COMPLETED.
1054 IDE_PM_START_SUSPEND
,
1055 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1058 IDE_PM_START_RESUME
,
1059 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1066 int generic_ide_suspend(struct device
*, pm_message_t
);
1067 int generic_ide_resume(struct device
*);
1069 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1070 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1071 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1072 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1075 * Subdrivers support.
1077 * The gendriver.owner field should be set to the module owner of this driver.
1078 * The gendriver.name field should be set to the name of this driver
1081 const char *version
;
1082 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1083 struct device_driver gen_driver
;
1084 int (*probe
)(ide_drive_t
*);
1085 void (*remove
)(ide_drive_t
*);
1086 void (*resume
)(ide_drive_t
*);
1087 void (*shutdown
)(ide_drive_t
*);
1088 #ifdef CONFIG_IDE_PROC_FS
1089 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1090 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1094 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1096 int ide_device_get(ide_drive_t
*);
1097 void ide_device_put(ide_drive_t
*);
1099 struct ide_ioctl_devset
{
1100 unsigned int get_ioctl
;
1101 unsigned int set_ioctl
;
1102 const struct ide_devset
*setting
;
1105 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1106 unsigned long, const struct ide_ioctl_devset
*);
1108 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1110 extern int ide_vlb_clk
;
1111 extern int ide_pci_clk
;
1113 unsigned int ide_rq_bytes(struct request
*);
1114 int ide_end_rq(ide_drive_t
*, struct request
*, int, unsigned int);
1115 void ide_kill_rq(ide_drive_t
*, struct request
*);
1117 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1118 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1120 void ide_execute_command(ide_drive_t
*, struct ide_cmd
*, ide_handler_t
*,
1123 void ide_pad_transfer(ide_drive_t
*, int, int);
1125 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1127 void ide_fix_driveid(u16
*);
1129 extern void ide_fixstring(u8
*, const int, const int);
1131 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1133 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1135 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1136 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1138 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1140 extern int ide_devset_execute(ide_drive_t
*drive
,
1141 const struct ide_devset
*setting
, int arg
);
1143 void ide_complete_cmd(ide_drive_t
*, struct ide_cmd
*, u8
, u8
);
1144 int ide_complete_rq(ide_drive_t
*, int, unsigned int);
1146 void ide_tf_dump(const char *, struct ide_taskfile
*);
1148 void ide_exec_command(ide_hwif_t
*, u8
);
1149 u8
ide_read_status(ide_hwif_t
*);
1150 u8
ide_read_altstatus(ide_hwif_t
*);
1151 void ide_write_devctl(ide_hwif_t
*, u8
);
1153 void ide_dev_select(ide_drive_t
*);
1154 void ide_tf_load(ide_drive_t
*, struct ide_cmd
*);
1155 void ide_tf_read(ide_drive_t
*, struct ide_cmd
*);
1157 void ide_input_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1158 void ide_output_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1160 void SELECT_MASK(ide_drive_t
*, int);
1162 u8
ide_read_error(ide_drive_t
*);
1163 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1165 int ide_check_atapi_device(ide_drive_t
*, const char *);
1167 void ide_init_pc(struct ide_atapi_pc
*);
1169 /* Disk head parking */
1170 extern wait_queue_head_t ide_park_wq
;
1171 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1173 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1174 const char *buf
, size_t len
);
1177 * Special requests for ide-tape block device strategy routine.
1179 * In order to service a character device command, we add special requests to
1180 * the tail of our block device request queue and wait for their completion.
1183 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1184 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1185 REQ_IDETAPE_READ
= (1 << 2),
1186 REQ_IDETAPE_WRITE
= (1 << 3),
1189 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1191 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1192 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1193 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1194 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1195 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1197 int ide_cd_expiry(ide_drive_t
*);
1199 int ide_cd_get_xferlen(struct request
*);
1201 ide_startstop_t
ide_issue_pc(ide_drive_t
*, struct ide_cmd
*);
1203 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, struct ide_cmd
*);
1205 void ide_pio_bytes(ide_drive_t
*, struct ide_cmd
*, unsigned int, unsigned int);
1207 void ide_finish_cmd(ide_drive_t
*, struct ide_cmd
*, u8
);
1209 int ide_raw_taskfile(ide_drive_t
*, struct ide_cmd
*, u8
*, u16
);
1210 int ide_no_data_taskfile(ide_drive_t
*, struct ide_cmd
*);
1212 int ide_taskfile_ioctl(ide_drive_t
*, unsigned long);
1214 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*);
1216 extern int ide_driveid_update(ide_drive_t
*);
1217 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1218 extern u8
eighty_ninty_three (ide_drive_t
*);
1219 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1221 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1223 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1225 extern void ide_timer_expiry(unsigned long);
1226 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1227 extern void do_ide_request(struct request_queue
*);
1229 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1231 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1232 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1233 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1235 #define ide_pci_register_driver(d) pci_register_driver(d)
1238 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1240 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1245 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1246 hw_regs_t
*, hw_regs_t
**);
1247 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1249 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1250 int ide_pci_set_master(struct pci_dev
*, const char *);
1251 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1252 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1253 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1255 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1256 const struct ide_port_info
*d
)
1262 struct ide_pci_enablebit
{
1263 u8 reg
; /* byte pci reg holding the enable-bit */
1264 u8 mask
; /* mask to isolate the enable-bit */
1265 u8 val
; /* value of masked reg when "enabled" */
1269 /* Uses ISA control ports not PCI ones. */
1270 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1271 /* single port device */
1272 IDE_HFLAG_SINGLE
= (1 << 1),
1273 /* don't use legacy PIO blacklist */
1274 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1275 /* set for the second port of QD65xx */
1276 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1277 /* use PIO8/9 for prefetch off/on */
1278 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1279 /* use PIO6/7 for fast-devsel off/on */
1280 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1281 /* use 100-102 and 200-202 PIO values to set DMA modes */
1282 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1284 * keep DMA setting when programming PIO mode, may be used only
1285 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1287 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1288 /* program host for the transfer mode after programming device */
1289 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1290 /* don't program host/device for the transfer mode ("smart" hosts) */
1291 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1292 /* trust BIOS for programming chipset/device for DMA */
1293 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1294 /* host is CS5510/CS5520 */
1295 IDE_HFLAG_CS5520
= (1 << 11),
1296 /* ATAPI DMA is unsupported */
1297 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1298 /* set if host is a "non-bootable" controller */
1299 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1300 /* host doesn't support DMA */
1301 IDE_HFLAG_NO_DMA
= (1 << 14),
1302 /* check if host is PCI IDE device before allowing DMA */
1303 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1304 /* host uses MMIO */
1305 IDE_HFLAG_MMIO
= (1 << 16),
1307 IDE_HFLAG_NO_LBA48
= (1 << 17),
1309 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1310 /* data FIFO is cleared by an error */
1311 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1312 /* serialize ports */
1313 IDE_HFLAG_SERIALIZE
= (1 << 20),
1314 /* host is DTC2278 */
1315 IDE_HFLAG_DTC2278
= (1 << 21),
1316 /* 4 devices on a single set of I/O ports */
1317 IDE_HFLAG_4DRIVES
= (1 << 22),
1318 /* host is TRM290 */
1319 IDE_HFLAG_TRM290
= (1 << 23),
1320 /* use 32-bit I/O ops */
1321 IDE_HFLAG_IO_32BIT
= (1 << 24),
1323 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1324 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1325 /* serialize ports if DMA is possible (for sl82c105) */
1326 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1327 /* force host out of "simplex" mode */
1328 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1329 /* DSC overlap is unsupported */
1330 IDE_HFLAG_NO_DSC
= (1 << 29),
1331 /* never use 32-bit I/O ops */
1332 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1333 /* never unmask IRQs */
1334 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1337 #ifdef CONFIG_BLK_DEV_OFFBOARD
1338 # define IDE_HFLAG_OFF_BOARD 0
1340 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1343 struct ide_port_info
{
1346 int (*init_chipset
)(struct pci_dev
*);
1348 void (*get_lock
)(irq_handler_t
, void *);
1349 void (*release_lock
)(void);
1351 void (*init_iops
)(ide_hwif_t
*);
1352 void (*init_hwif
)(ide_hwif_t
*);
1353 int (*init_dma
)(ide_hwif_t
*,
1354 const struct ide_port_info
*);
1356 const struct ide_tp_ops
*tp_ops
;
1357 const struct ide_port_ops
*port_ops
;
1358 const struct ide_dma_ops
*dma_ops
;
1360 struct ide_pci_enablebit enablebits
[2];
1362 hwif_chipset_t chipset
;
1364 u16 max_sectors
; /* if < than the default one */
1376 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1377 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1378 const struct ide_port_info
*, void *);
1379 void ide_pci_remove(struct pci_dev
*);
1382 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1383 int ide_pci_resume(struct pci_dev
*);
1385 #define ide_pci_suspend NULL
1386 #define ide_pci_resume NULL
1389 void ide_map_sg(ide_drive_t
*, struct ide_cmd
*);
1390 void ide_init_sg_cmd(struct ide_cmd
*, unsigned int);
1392 #define BAD_DMA_DRIVE 0
1393 #define GOOD_DMA_DRIVE 1
1395 struct drive_list_entry
{
1396 const char *id_model
;
1397 const char *id_firmware
;
1400 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1402 #ifdef CONFIG_BLK_DEV_IDEDMA
1403 int ide_dma_good_drive(ide_drive_t
*);
1404 int __ide_dma_bad_drive(ide_drive_t
*);
1405 int ide_id_dma_bug(ide_drive_t
*);
1407 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1409 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1411 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1414 void ide_dma_off_quietly(ide_drive_t
*);
1415 void ide_dma_off(ide_drive_t
*);
1416 void ide_dma_on(ide_drive_t
*);
1417 int ide_set_dma(ide_drive_t
*);
1418 void ide_check_dma_crc(ide_drive_t
*);
1419 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1421 int ide_allocate_dma_engine(ide_hwif_t
*);
1422 void ide_release_dma_engine(ide_hwif_t
*);
1424 int ide_dma_prepare(ide_drive_t
*, struct ide_cmd
*);
1425 void ide_dma_unmap_sg(ide_drive_t
*, struct ide_cmd
*);
1427 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1428 int config_drive_for_dma(ide_drive_t
*);
1429 int ide_build_dmatable(ide_drive_t
*, struct ide_cmd
*);
1430 void ide_dma_host_set(ide_drive_t
*, int);
1431 int ide_dma_setup(ide_drive_t
*, struct ide_cmd
*);
1432 extern void ide_dma_start(ide_drive_t
*);
1433 int ide_dma_end(ide_drive_t
*);
1434 int ide_dma_test_irq(ide_drive_t
*);
1435 int ide_dma_sff_timer_expiry(ide_drive_t
*);
1436 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1437 extern const struct ide_dma_ops sff_dma_ops
;
1439 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1440 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1442 void ide_dma_lost_irq(ide_drive_t
*);
1443 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1446 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1447 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1448 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1449 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1450 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1451 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1452 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1453 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1454 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1455 static inline ide_startstop_t
ide_dma_intr(ide_drive_t
*drive
) { return ide_stopped
; }
1456 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1457 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1458 static inline int ide_dma_prepare(ide_drive_t
*drive
,
1459 struct ide_cmd
*cmd
) { return 1; }
1460 static inline void ide_dma_unmap_sg(ide_drive_t
*drive
,
1461 struct ide_cmd
*cmd
) { ; }
1462 #endif /* CONFIG_BLK_DEV_IDEDMA */
1464 #ifdef CONFIG_BLK_DEV_IDEACPI
1465 int ide_acpi_init(void);
1466 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1467 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1468 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1469 void ide_acpi_init_port(ide_hwif_t
*);
1470 void ide_acpi_port_init_devices(ide_hwif_t
*);
1471 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1473 static inline int ide_acpi_init(void) { return 0; }
1474 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1475 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1476 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1477 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1478 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1479 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1482 void ide_register_region(struct gendisk
*);
1483 void ide_unregister_region(struct gendisk
*);
1485 void ide_undecoded_slave(ide_drive_t
*);
1487 void ide_port_apply_params(ide_hwif_t
*);
1488 int ide_sysfs_register_port(ide_hwif_t
*);
1490 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1491 void ide_host_free(struct ide_host
*);
1492 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1494 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1495 struct ide_host
**);
1496 void ide_host_remove(struct ide_host
*);
1497 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1498 void ide_port_unregister_devices(ide_hwif_t
*);
1499 void ide_port_scan(ide_hwif_t
*);
1501 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1503 return hwif
->hwif_data
;
1506 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1508 hwif
->hwif_data
= data
;
1511 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1513 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1514 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1519 u16 act8b
; /* t2 for 8-bit io */
1520 u16 rec8b
; /* t2i for 8-bit io */
1521 u16 cyc8b
; /* t0 for 8-bit io */
1522 u16 active
; /* t2 or tD */
1523 u16 recover
; /* t2i or tK */
1525 u16 udma
; /* t2CYCTYP/2 */
1529 IDE_TIMING_SETUP
= (1 << 0),
1530 IDE_TIMING_ACT8B
= (1 << 1),
1531 IDE_TIMING_REC8B
= (1 << 2),
1532 IDE_TIMING_CYC8B
= (1 << 3),
1533 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1535 IDE_TIMING_ACTIVE
= (1 << 4),
1536 IDE_TIMING_RECOVER
= (1 << 5),
1537 IDE_TIMING_CYCLE
= (1 << 6),
1538 IDE_TIMING_UDMA
= (1 << 7),
1539 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1540 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1541 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1544 struct ide_timing
*ide_timing_find_mode(u8
);
1545 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1546 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1547 struct ide_timing
*, unsigned int);
1548 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1550 #ifdef CONFIG_IDE_XFER_MODE
1551 int ide_scan_pio_blacklist(char *);
1552 const char *ide_xfer_verbose(u8
);
1553 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1554 int ide_set_pio_mode(ide_drive_t
*, u8
);
1555 int ide_set_dma_mode(ide_drive_t
*, u8
);
1556 void ide_set_pio(ide_drive_t
*, u8
);
1557 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1559 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1560 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1563 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1565 ide_set_pio(drive
, 255);
1568 char *ide_media_string(ide_drive_t
*);
1570 extern struct device_attribute ide_dev_attrs
[];
1571 extern struct bus_type ide_bus_type
;
1572 extern struct class *ide_port_class
;
1574 static inline void ide_dump_identify(u8
*id
)
1576 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1579 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1581 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1584 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1586 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1588 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1591 #define ide_port_for_each_dev(i, dev, port) \
1592 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1594 #define ide_port_for_each_present_dev(i, dev, port) \
1595 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1596 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1598 #define ide_host_for_each_port(i, port, host) \
1599 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)