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/pci.h>
18 #include <linux/completion.h>
20 #include <linux/mutex.h>
21 /* for request_sense */
22 #include <linux/cdrom.h>
23 #include <asm/byteorder.h>
26 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
27 # define SUPPORT_VLB_SYNC 0
29 # define SUPPORT_VLB_SYNC 1
33 * Probably not wise to fiddle with these
35 #define IDE_DEFAULT_MAX_FAILURES 1
36 #define ERROR_MAX 8 /* Max read/write errors per sector */
37 #define ERROR_RESET 3 /* Reset controller every 4th retry */
38 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42 /* Error codes returned in rq->errors to the higher part of the driver. */
44 IDE_DRV_ERROR_GENERAL
= 101,
45 IDE_DRV_ERROR_FILEMARK
= 102,
46 IDE_DRV_ERROR_EOD
= 103,
50 * Definitions for accessing IDE controller registers
52 #define IDE_NR_PORTS (10)
55 unsigned long data_addr
;
58 unsigned long error_addr
; /* read: error */
59 unsigned long feature_addr
; /* write: feature */
62 unsigned long nsect_addr
;
63 unsigned long lbal_addr
;
64 unsigned long lbam_addr
;
65 unsigned long lbah_addr
;
67 unsigned long device_addr
;
70 unsigned long status_addr
; /* read: status */
71 unsigned long command_addr
; /* write: command */
74 unsigned long ctl_addr
;
76 unsigned long irq_addr
;
79 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
81 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
82 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
83 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
84 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
86 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
88 #define SATA_NR_PORTS (3) /* 16 possible ?? */
90 #define SATA_STATUS_OFFSET (0)
91 #define SATA_ERROR_OFFSET (1)
92 #define SATA_CONTROL_OFFSET (2)
95 * Our Physical Region Descriptor (PRD) table should be large enough
96 * to handle the biggest I/O request we are likely to see. Since requests
97 * can have no more than 256 sectors, and since the typical blocksize is
98 * two or more sectors, we could get by with a limit of 128 entries here for
99 * the usual worst case. Most requests seem to include some contiguous blocks,
100 * further reducing the number of table entries required.
102 * The driver reverts to PIO mode for individual requests that exceed
103 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
104 * 100% of all crazy scenarios here is not necessary.
106 * As it turns out though, we must allocate a full 4KB page for this,
107 * so the two PRD tables (ide0 & ide1) will each get half of that,
108 * allowing each to have about 256 entries (8 bytes each) from this.
111 #define PRD_ENTRIES 256
114 * Some more useful definitions
116 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
117 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
118 #define SECTOR_SIZE 512
121 * Timeouts for various operations:
124 /* spec allows up to 20ms, but CF cards and SSD drives need more */
125 WAIT_DRQ
= 1 * HZ
, /* 1s */
126 /* some laptops are very slow */
127 WAIT_READY
= 5 * HZ
, /* 5s */
128 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
129 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
130 /* worst case when spinning up */
131 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
132 /* maximum wait for an IRQ to happen */
133 WAIT_CMD
= 10 * HZ
, /* 10s */
134 /* Some drives require a longer IRQ timeout. */
135 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
137 * Some drives (for example, Seagate STT3401A Travan) require a very
138 * long timeout, because they don't return an interrupt or clear their
139 * BSY bit until after the command completes (even retension commands).
141 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
142 /* minimum sleep time */
143 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
147 * Op codes for special requests to be handled by ide_special_rq().
148 * Values should be in the range of 0x20 to 0x3f.
150 #define REQ_DRIVE_RESET 0x20
151 #define REQ_DEVSET_EXEC 0x21
152 #define REQ_PARK_HEADS 0x22
153 #define REQ_UNPARK_HEADS 0x23
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
159 enum { ide_unknown
, ide_generic
, ide_pci
,
160 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
161 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
162 ide_4drives
, ide_pmac
, ide_acorn
,
163 ide_au1xxx
, ide_palm3710
166 typedef u8 hwif_chipset_t
;
169 * Structure to hold all information about the location of this port
173 struct ide_io_ports io_ports
;
174 unsigned long io_ports_array
[IDE_NR_PORTS
];
177 int irq
; /* our irq number */
178 struct device
*dev
, *parent
;
179 unsigned long config
;
182 static inline void ide_std_init_ports(struct ide_hw
*hw
,
183 unsigned long io_addr
,
184 unsigned long ctl_addr
)
188 for (i
= 0; i
<= 7; i
++)
189 hw
->io_ports_array
[i
] = io_addr
++;
191 hw
->io_ports
.ctl_addr
= ctl_addr
;
197 * Now for the data we need to maintain per-drive: ide_drive_t
200 #define ide_scsi 0x21
201 #define ide_disk 0x20
202 #define ide_optical 0x7
203 #define ide_cdrom 0x5
205 #define ide_floppy 0x0
208 * Special Driver Flags
211 IDE_SFLAG_SET_GEOMETRY
= (1 << 0),
212 IDE_SFLAG_RECALIBRATE
= (1 << 1),
213 IDE_SFLAG_SET_MULTMODE
= (1 << 2),
217 * Status returned from various ide_ functions
220 ide_stopped
, /* no drive operation was started */
221 ide_started
, /* a drive operation was started, handler was set */
225 IDE_VALID_ERROR
= (1 << 1),
226 IDE_VALID_FEATURE
= IDE_VALID_ERROR
,
227 IDE_VALID_NSECT
= (1 << 2),
228 IDE_VALID_LBAL
= (1 << 3),
229 IDE_VALID_LBAM
= (1 << 4),
230 IDE_VALID_LBAH
= (1 << 5),
231 IDE_VALID_DEVICE
= (1 << 6),
232 IDE_VALID_LBA
= IDE_VALID_LBAL
|
235 IDE_VALID_OUT_TF
= IDE_VALID_FEATURE
|
238 IDE_VALID_IN_TF
= IDE_VALID_NSECT
|
240 IDE_VALID_OUT_HOB
= IDE_VALID_OUT_TF
,
241 IDE_VALID_IN_HOB
= IDE_VALID_ERROR
|
247 IDE_TFLAG_LBA48
= (1 << 0),
248 IDE_TFLAG_WRITE
= (1 << 1),
249 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 2),
250 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 3),
251 /* force 16-bit I/O operations */
252 IDE_TFLAG_IO_16BIT
= (1 << 4),
253 /* struct ide_cmd was allocated using kmalloc() */
254 IDE_TFLAG_DYN
= (1 << 5),
255 IDE_TFLAG_FS
= (1 << 6),
256 IDE_TFLAG_MULTI_PIO
= (1 << 7),
257 IDE_TFLAG_SET_XFER
= (1 << 8),
261 IDE_FTFLAG_FLAGGED
= (1 << 0),
262 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
263 IDE_FTFLAG_OUT_DATA
= (1 << 2),
264 IDE_FTFLAG_IN_DATA
= (1 << 3),
267 struct ide_taskfile
{
268 u8 data
; /* 0: data byte (for TASKFILE ioctl) */
270 u8 error
; /* read: error */
271 u8 feature
; /* write: feature */
273 u8 nsect
; /* 2: number of sectors */
274 u8 lbal
; /* 3: LBA low */
275 u8 lbam
; /* 4: LBA mid */
276 u8 lbah
; /* 5: LBA high */
277 u8 device
; /* 6: device select */
279 u8 status
; /* read: status */
280 u8 command
; /* write: command */
285 struct ide_taskfile tf
;
286 struct ide_taskfile hob
;
295 u8 ftf_flags
; /* for TASKFILE ioctl */
298 int sg_nents
; /* number of sg entries */
300 int sg_dma_direction
; /* DMA transfer direction */
304 unsigned int last_xfer_len
;
306 struct scatterlist
*cursg
;
307 unsigned int cursg_ofs
;
309 struct request
*rq
; /* copy of request */
312 /* ATAPI packet command flags */
314 /* set when an error is considered normal - no retry (ide-tape) */
315 PC_FLAG_ABORT
= (1 << 0),
316 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
317 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
318 PC_FLAG_DMA_OK
= (1 << 3),
319 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
320 PC_FLAG_DMA_ERROR
= (1 << 5),
321 PC_FLAG_WRITING
= (1 << 6),
324 #define ATAPI_WAIT_PC (60 * HZ)
326 struct ide_atapi_pc
{
327 /* actual packet bytes */
329 /* incremented on each retry */
333 /* bytes to transfer */
336 /* the corresponding request */
342 * those are more or less driver-specific and some of them are subject
343 * to change/removal later.
345 unsigned long timeout
;
351 #ifdef CONFIG_BLK_DEV_IDEACPI
352 struct ide_acpi_drive_link
;
353 struct ide_acpi_hwif_link
;
358 struct ide_disk_ops
{
359 int (*check
)(struct ide_drive_s
*, const char *);
360 int (*get_capacity
)(struct ide_drive_s
*);
361 void (*unlock_native_capacity
)(struct ide_drive_s
*);
362 void (*setup
)(struct ide_drive_s
*);
363 void (*flush
)(struct ide_drive_s
*);
364 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
365 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
367 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
369 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
370 fmode_t
, unsigned int, unsigned long);
373 /* ATAPI device flags */
375 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
378 /* Drive cannot eject the disc. */
379 IDE_AFLAG_NO_EJECT
= (1 << 1),
380 /* Drive is a pre ATAPI 1.2 drive. */
381 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
382 /* TOC addresses are in BCD. */
383 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
384 /* TOC track numbers are in BCD. */
385 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
386 /* Saved TOC information is current. */
387 IDE_AFLAG_TOC_VALID
= (1 << 6),
388 /* We think that the drive door is locked. */
389 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
390 /* SET_CD_SPEED command is unsupported. */
391 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
392 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
393 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
394 IDE_AFLAG_SANYO_3CD
= (1 << 11),
395 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
396 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
397 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
400 /* Avoid commands not supported in Clik drive */
401 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
402 /* Requires BH algorithm for packets */
403 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
404 /* Supports format progress report */
405 IDE_AFLAG_SRFP
= (1 << 17),
408 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
409 /* 0 When the tape position is unknown */
410 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
411 /* Device already opened */
412 IDE_AFLAG_BUSY
= (1 << 20),
413 /* Attempt to auto-detect the current user block size */
414 IDE_AFLAG_DETECT_BS
= (1 << 21),
415 /* Currently on a filemark */
416 IDE_AFLAG_FILEMARK
= (1 << 22),
417 /* 0 = no tape is loaded, so we don't rewind after ejecting */
418 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
420 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
425 /* restore settings after device reset */
426 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
427 /* device is using DMA for read/write */
428 IDE_DFLAG_USING_DMA
= (1 << 1),
429 /* okay to unmask other IRQs */
430 IDE_DFLAG_UNMASK
= (1 << 2),
431 /* don't attempt flushes */
432 IDE_DFLAG_NOFLUSH
= (1 << 3),
434 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
435 /* give potential excess bandwidth */
436 IDE_DFLAG_NICE1
= (1 << 5),
437 /* device is physically present */
438 IDE_DFLAG_PRESENT
= (1 << 6),
439 /* disable Host Protected Area */
440 IDE_DFLAG_NOHPA
= (1 << 7),
441 /* id read from device (synthetic if not set) */
442 IDE_DFLAG_ID_READ
= (1 << 8),
443 IDE_DFLAG_NOPROBE
= (1 << 9),
444 /* need to do check_media_change() */
445 IDE_DFLAG_REMOVABLE
= (1 << 10),
446 /* needed for removable devices */
447 IDE_DFLAG_ATTACH
= (1 << 11),
448 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
449 /* disallow setting unmask bit */
450 IDE_DFLAG_NO_UNMASK
= (1 << 13),
451 /* disallow enabling 32-bit I/O */
452 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
453 /* for removable only: door lock/unlock works */
454 IDE_DFLAG_DOORLOCKING
= (1 << 15),
456 IDE_DFLAG_NODMA
= (1 << 16),
457 /* powermanagement told us not to do anything, so sleep nicely */
458 IDE_DFLAG_BLOCKED
= (1 << 17),
459 /* sleeping & sleep field valid */
460 IDE_DFLAG_SLEEPING
= (1 << 18),
461 IDE_DFLAG_POST_RESET
= (1 << 19),
462 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
463 IDE_DFLAG_LBA48
= (1 << 21),
464 /* status of write cache */
465 IDE_DFLAG_WCACHE
= (1 << 22),
466 /* used for ignoring ATA_DF */
467 IDE_DFLAG_NOWERR
= (1 << 23),
468 /* retrying in PIO */
469 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
470 IDE_DFLAG_LBA
= (1 << 25),
471 /* don't unload heads */
472 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
473 /* heads unloaded, please don't reset port */
474 IDE_DFLAG_PARKED
= (1 << 27),
475 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
477 IDE_DFLAG_WP
= (1 << 29),
478 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
479 IDE_DFLAG_NIEN_QUIRK
= (1 << 31),
483 char name
[4]; /* drive name, such as "hda" */
484 char driver_req
[10]; /* requests specific driver */
486 struct request_queue
*queue
; /* request queue */
488 struct request
*rq
; /* current request */
489 void *driver_data
; /* extra driver data */
490 u16
*id
; /* identification info */
491 #ifdef CONFIG_IDE_PROC_FS
492 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
493 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
495 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
497 const struct ide_disk_ops
*disk_ops
;
499 unsigned long dev_flags
;
501 unsigned long sleep
; /* sleep until this time */
502 unsigned long timeout
; /* max time to wait for irq */
504 u8 special_flags
; /* special action flags */
506 u8 select
; /* basic drive/head select reg value */
507 u8 retry_pio
; /* retrying dma capable host in pio */
508 u8 waiting_for_dma
; /* dma currently in progress */
509 u8 dma
; /* atapi dma flag */
511 u8 init_speed
; /* transfer rate set at boot */
512 u8 current_speed
; /* current transfer rate set */
513 u8 desired_speed
; /* desired transfer rate set */
514 u8 pio_mode
; /* for ->set_pio_mode _only_ */
515 u8 dma_mode
; /* for ->set_dma_mode _only_ */
516 u8 dn
; /* now wide spread use */
517 u8 acoustic
; /* acoustic management */
518 u8 media
; /* disk, cdrom, tape, floppy, ... */
519 u8 ready_stat
; /* min status value for drive ready */
520 u8 mult_count
; /* current multiple sector setting */
521 u8 mult_req
; /* requested multiple sector setting */
522 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
523 u8 bad_wstat
; /* used for ignoring ATA_DF */
524 u8 head
; /* "real" number of heads */
525 u8 sect
; /* "real" sectors per track */
526 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
527 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
529 /* delay this long before sending packet command */
532 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
533 unsigned int cyl
; /* "real" number of cyls */
534 void *drive_data
; /* used by set_pio_mode/dev_select() */
535 unsigned int failures
; /* current failure count */
536 unsigned int max_failures
; /* maximum allowed failure count */
537 u64 probed_capacity
;/* initial/native media capacity */
538 u64 capacity64
; /* total number of sectors */
540 int lun
; /* logical unit */
541 int crc_count
; /* crc counter to reduce drive speed */
543 unsigned long debug_mask
; /* debugging levels switch */
545 #ifdef CONFIG_BLK_DEV_IDEACPI
546 struct ide_acpi_drive_link
*acpidata
;
548 struct list_head list
;
549 struct device gendev
;
550 struct completion gendev_rel_comp
; /* to deal with device release() */
552 /* current packet command */
553 struct ide_atapi_pc
*pc
;
555 /* last failed packet command */
556 struct ide_atapi_pc
*failed_pc
;
558 /* callback for packet commands */
559 int (*pc_callback
)(struct ide_drive_s
*, int);
561 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
563 unsigned long atapi_flags
;
565 struct ide_atapi_pc request_sense_pc
;
567 /* current sense rq and buffer */
569 struct request sense_rq
;
570 struct request_sense sense_data
;
573 typedef struct ide_drive_s ide_drive_t
;
575 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
577 #define to_ide_drv(obj, cont_type) \
578 container_of(obj, struct cont_type, dev)
580 #define ide_drv_g(disk, cont_type) \
581 container_of((disk)->private_data, struct cont_type, driver)
583 struct ide_port_info
;
586 void (*exec_command
)(struct hwif_s
*, u8
);
587 u8 (*read_status
)(struct hwif_s
*);
588 u8 (*read_altstatus
)(struct hwif_s
*);
589 void (*write_devctl
)(struct hwif_s
*, u8
);
591 void (*dev_select
)(ide_drive_t
*);
592 void (*tf_load
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
593 void (*tf_read
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
595 void (*input_data
)(ide_drive_t
*, struct ide_cmd
*,
596 void *, unsigned int);
597 void (*output_data
)(ide_drive_t
*, struct ide_cmd
*,
598 void *, unsigned int);
601 extern const struct ide_tp_ops default_tp_ops
;
604 * struct ide_port_ops - IDE port operations
606 * @init_dev: host specific initialization of a device
607 * @set_pio_mode: routine to program host for PIO mode
608 * @set_dma_mode: routine to program host for DMA mode
609 * @reset_poll: chipset polling based on hba specifics
610 * @pre_reset: chipset specific changes to default for device-hba resets
611 * @resetproc: routine to reset controller after a disk reset
612 * @maskproc: special host masking for drive selection
613 * @quirkproc: check host's drive quirk list
614 * @clear_irq: clear IRQ
616 * @mdma_filter: filter MDMA modes
617 * @udma_filter: filter UDMA modes
619 * @cable_detect: detect cable type
621 struct ide_port_ops
{
622 void (*init_dev
)(ide_drive_t
*);
623 void (*set_pio_mode
)(struct hwif_s
*, ide_drive_t
*);
624 void (*set_dma_mode
)(struct hwif_s
*, ide_drive_t
*);
625 int (*reset_poll
)(ide_drive_t
*);
626 void (*pre_reset
)(ide_drive_t
*);
627 void (*resetproc
)(ide_drive_t
*);
628 void (*maskproc
)(ide_drive_t
*, int);
629 void (*quirkproc
)(ide_drive_t
*);
630 void (*clear_irq
)(ide_drive_t
*);
631 int (*test_irq
)(struct hwif_s
*);
633 u8 (*mdma_filter
)(ide_drive_t
*);
634 u8 (*udma_filter
)(ide_drive_t
*);
636 u8 (*cable_detect
)(struct hwif_s
*);
640 void (*dma_host_set
)(struct ide_drive_s
*, int);
641 int (*dma_setup
)(struct ide_drive_s
*, struct ide_cmd
*);
642 void (*dma_start
)(struct ide_drive_s
*);
643 int (*dma_end
)(struct ide_drive_s
*);
644 int (*dma_test_irq
)(struct ide_drive_s
*);
645 void (*dma_lost_irq
)(struct ide_drive_s
*);
646 /* below ones are optional */
647 int (*dma_check
)(struct ide_drive_s
*, struct ide_cmd
*);
648 int (*dma_timer_expiry
)(struct ide_drive_s
*);
649 void (*dma_clear
)(struct ide_drive_s
*);
651 * The following method is optional and only required to be
652 * implemented for the SFF-8038i compatible controllers.
654 u8 (*dma_sff_read_status
)(struct hwif_s
*);
658 IDE_PFLAG_PROBING
= (1 << 0),
663 typedef struct hwif_s
{
664 struct hwif_s
*mate
; /* other hwif from same PCI chip */
665 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
667 struct ide_host
*host
;
669 char name
[6]; /* name of interface, eg. "ide0" */
671 struct ide_io_ports io_ports
;
673 unsigned long sata_scr
[SATA_NR_PORTS
];
675 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
677 unsigned long port_flags
;
679 u8 major
; /* our major number */
680 u8 index
; /* 0 for ide0; 1 for ide1; ... */
681 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
691 u8 cbl
; /* cable type */
693 hwif_chipset_t chipset
; /* sub-module for tuning.. */
697 void (*rw_disk
)(ide_drive_t
*, struct request
*);
699 const struct ide_tp_ops
*tp_ops
;
700 const struct ide_port_ops
*port_ops
;
701 const struct ide_dma_ops
*dma_ops
;
703 /* dma physical region descriptor table (cpu view) */
704 unsigned int *dmatable_cpu
;
705 /* dma physical region descriptor table (dma view) */
706 dma_addr_t dmatable_dma
;
708 /* maximum number of PRD table entries */
710 /* PRD entry size in bytes */
713 /* Scatter-gather list used to build the above */
714 struct scatterlist
*sg_table
;
715 int sg_max_nents
; /* Maximum number of entries in it */
717 struct ide_cmd cmd
; /* current command */
719 int rqsize
; /* max sectors per request */
720 int irq
; /* our irq number */
722 unsigned long dma_base
; /* base addr for dma ports */
724 unsigned long config_data
; /* for use by chipset-specific code */
725 unsigned long select_data
; /* for use by chipset-specific code */
727 unsigned long extra_base
; /* extra addr for dma ports */
728 unsigned extra_ports
; /* number of extra dma ports */
730 unsigned present
: 1; /* this interface exists */
731 unsigned busy
: 1; /* serializes devices on a port */
733 struct device gendev
;
734 struct device
*portdev
;
736 struct completion gendev_rel_comp
; /* To deal with device release() */
738 void *hwif_data
; /* extra hwif data */
740 #ifdef CONFIG_BLK_DEV_IDEACPI
741 struct ide_acpi_hwif_link
*acpidata
;
744 /* IRQ handler, if active */
745 ide_startstop_t (*handler
)(ide_drive_t
*);
747 /* BOOL: polling active & poll_timeout field valid */
748 unsigned int polling
: 1;
751 ide_drive_t
*cur_dev
;
753 /* current request */
757 struct timer_list timer
;
758 /* timeout value during long polls */
759 unsigned long poll_timeout
;
760 /* queried upon timeouts */
761 int (*expiry
)(ide_drive_t
*);
767 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
769 #define MAX_HOST_PORTS 4
772 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
773 unsigned int n_ports
;
774 struct device
*dev
[2];
776 int (*init_chipset
)(struct pci_dev
*);
778 void (*get_lock
)(irq_handler_t
, void *);
779 void (*release_lock
)(void);
781 irq_handler_t irq_handler
;
783 unsigned long host_flags
;
788 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
790 /* used for hosts requiring serialization */
791 volatile unsigned long host_busy
;
794 #define IDE_HOST_BUSY 0
797 * internal ide interrupt handler type
799 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
800 typedef int (ide_expiry_t
)(ide_drive_t
*);
802 /* used by ide-cd, ide-floppy, etc. */
803 typedef void (xfer_func_t
)(ide_drive_t
*, struct ide_cmd
*, void *, unsigned);
805 extern struct mutex ide_setting_mtx
;
808 * configurable drive settings
811 #define DS_SYNC (1 << 0)
814 int (*get
)(ide_drive_t
*);
815 int (*set
)(ide_drive_t
*, int);
819 #define __DEVSET(_flags, _get, _set) { \
825 #define ide_devset_get(name, field) \
826 static int get_##name(ide_drive_t *drive) \
828 return drive->field; \
831 #define ide_devset_set(name, field) \
832 static int set_##name(ide_drive_t *drive, int arg) \
834 drive->field = arg; \
838 #define ide_devset_get_flag(name, flag) \
839 static int get_##name(ide_drive_t *drive) \
841 return !!(drive->dev_flags & flag); \
844 #define ide_devset_set_flag(name, flag) \
845 static int set_##name(ide_drive_t *drive, int arg) \
848 drive->dev_flags |= flag; \
850 drive->dev_flags &= ~flag; \
854 #define __IDE_DEVSET(_name, _flags, _get, _set) \
855 const struct ide_devset ide_devset_##_name = \
856 __DEVSET(_flags, _get, _set)
858 #define IDE_DEVSET(_name, _flags, _get, _set) \
859 static __IDE_DEVSET(_name, _flags, _get, _set)
861 #define ide_devset_rw(_name, _func) \
862 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
864 #define ide_devset_w(_name, _func) \
865 IDE_DEVSET(_name, 0, NULL, set_##_func)
867 #define ide_ext_devset_rw(_name, _func) \
868 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
870 #define ide_ext_devset_rw_sync(_name, _func) \
871 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
873 #define ide_decl_devset(_name) \
874 extern const struct ide_devset ide_devset_##_name
876 ide_decl_devset(io_32bit
);
877 ide_decl_devset(keepsettings
);
878 ide_decl_devset(pio_mode
);
879 ide_decl_devset(unmaskirq
);
880 ide_decl_devset(using_dma
);
882 #ifdef CONFIG_IDE_PROC_FS
884 * /proc/ide interface
887 #define ide_devset_rw_field(_name, _field) \
888 ide_devset_get(_name, _field); \
889 ide_devset_set(_name, _field); \
890 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
892 #define ide_devset_rw_flag(_name, _field) \
893 ide_devset_get_flag(_name, _field); \
894 ide_devset_set_flag(_name, _field); \
895 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
897 struct ide_proc_devset
{
899 const struct ide_devset
*setting
;
901 int (*mulf
)(ide_drive_t
*);
902 int (*divf
)(ide_drive_t
*);
905 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
906 .name = __stringify(_name), \
907 .setting = &ide_devset_##_name, \
914 #define IDE_PROC_DEVSET(_name, _min, _max) \
915 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
920 const struct file_operations
*proc_fops
;
923 void proc_ide_create(void);
924 void proc_ide_destroy(void);
925 void ide_proc_register_port(ide_hwif_t
*);
926 void ide_proc_port_register_devices(ide_hwif_t
*);
927 void ide_proc_unregister_device(ide_drive_t
*);
928 void ide_proc_unregister_port(ide_hwif_t
*);
929 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
930 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
932 extern const struct file_operations ide_capacity_proc_fops
;
933 extern const struct file_operations ide_geometry_proc_fops
;
935 static inline void proc_ide_create(void) { ; }
936 static inline void proc_ide_destroy(void) { ; }
937 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
938 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
939 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
940 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
941 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
942 struct ide_driver
*driver
) { ; }
943 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
944 struct ide_driver
*driver
) { ; }
948 /* enter/exit functions */
949 IDE_DBG_FUNC
= (1 << 0),
950 /* sense key/asc handling */
951 IDE_DBG_SENSE
= (1 << 1),
952 /* packet commands handling */
953 IDE_DBG_PC
= (1 << 2),
954 /* request handling */
955 IDE_DBG_RQ
= (1 << 3),
956 /* driver probing/setup */
957 IDE_DBG_PROBE
= (1 << 4),
960 /* DRV_NAME has to be defined in the driver before using the macro below */
961 #define __ide_debug_log(lvl, fmt, args...) \
963 if (unlikely(drive->debug_mask & lvl)) \
964 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
965 __func__, ## args); \
969 * Power Management state machine (rq->pm->pm_step).
971 * For each step, the core calls ide_start_power_step() first.
973 * - ide_stopped : In this case, the core calls us back again unless
974 * step have been set to ide_power_state_completed.
975 * - ide_started : In this case, the channel is left busy until an
976 * async event (interrupt) occurs.
977 * Typically, ide_start_power_step() will issue a taskfile request with
980 * Upon reception of the interrupt, the core will call ide_complete_power_step()
981 * with the error code if any. This routine should update the step value
982 * and return. It should not start a new request. The core will call
983 * ide_start_power_step() for the new step value, unless step have been
984 * set to IDE_PM_COMPLETED.
987 IDE_PM_START_SUSPEND
,
988 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
992 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
999 int generic_ide_suspend(struct device
*, pm_message_t
);
1000 int generic_ide_resume(struct device
*);
1002 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1003 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1004 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1005 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1008 * Subdrivers support.
1010 * The gendriver.owner field should be set to the module owner of this driver.
1011 * The gendriver.name field should be set to the name of this driver
1014 const char *version
;
1015 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1016 struct device_driver gen_driver
;
1017 int (*probe
)(ide_drive_t
*);
1018 void (*remove
)(ide_drive_t
*);
1019 void (*resume
)(ide_drive_t
*);
1020 void (*shutdown
)(ide_drive_t
*);
1021 #ifdef CONFIG_IDE_PROC_FS
1022 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1023 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1027 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1029 int ide_device_get(ide_drive_t
*);
1030 void ide_device_put(ide_drive_t
*);
1032 struct ide_ioctl_devset
{
1033 unsigned int get_ioctl
;
1034 unsigned int set_ioctl
;
1035 const struct ide_devset
*setting
;
1038 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1039 unsigned long, const struct ide_ioctl_devset
*);
1041 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1043 extern int ide_vlb_clk
;
1044 extern int ide_pci_clk
;
1046 int ide_end_rq(ide_drive_t
*, struct request
*, int, unsigned int);
1047 void ide_kill_rq(ide_drive_t
*, struct request
*);
1049 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1050 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1052 void ide_execute_command(ide_drive_t
*, struct ide_cmd
*, ide_handler_t
*,
1055 void ide_pad_transfer(ide_drive_t
*, int, int);
1057 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1059 void ide_fix_driveid(u16
*);
1061 extern void ide_fixstring(u8
*, const int, const int);
1063 int ide_busy_sleep(ide_drive_t
*, unsigned long, int);
1065 int __ide_wait_stat(ide_drive_t
*, u8
, u8
, unsigned long, u8
*);
1066 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1068 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1069 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1071 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1073 extern int ide_devset_execute(ide_drive_t
*drive
,
1074 const struct ide_devset
*setting
, int arg
);
1076 void ide_complete_cmd(ide_drive_t
*, struct ide_cmd
*, u8
, u8
);
1077 int ide_complete_rq(ide_drive_t
*, int, unsigned int);
1079 void ide_tf_readback(ide_drive_t
*drive
, struct ide_cmd
*cmd
);
1080 void ide_tf_dump(const char *, struct ide_cmd
*);
1082 void ide_exec_command(ide_hwif_t
*, u8
);
1083 u8
ide_read_status(ide_hwif_t
*);
1084 u8
ide_read_altstatus(ide_hwif_t
*);
1085 void ide_write_devctl(ide_hwif_t
*, u8
);
1087 void ide_dev_select(ide_drive_t
*);
1088 void ide_tf_load(ide_drive_t
*, struct ide_taskfile
*, u8
);
1089 void ide_tf_read(ide_drive_t
*, struct ide_taskfile
*, u8
);
1091 void ide_input_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1092 void ide_output_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1094 void SELECT_MASK(ide_drive_t
*, int);
1096 u8
ide_read_error(ide_drive_t
*);
1097 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1099 int ide_check_ireason(ide_drive_t
*, struct request
*, int, int, int);
1101 int ide_check_atapi_device(ide_drive_t
*, const char *);
1103 void ide_init_pc(struct ide_atapi_pc
*);
1105 /* Disk head parking */
1106 extern wait_queue_head_t ide_park_wq
;
1107 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1109 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1110 const char *buf
, size_t len
);
1113 * Special requests for ide-tape block device strategy routine.
1115 * In order to service a character device command, we add special requests to
1116 * the tail of our block device request queue and wait for their completion.
1119 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1120 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1121 REQ_IDETAPE_READ
= (1 << 2),
1122 REQ_IDETAPE_WRITE
= (1 << 3),
1125 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*,
1126 void *, unsigned int);
1128 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1129 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1130 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1131 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1132 void ide_retry_pc(ide_drive_t
*drive
);
1134 void ide_prep_sense(ide_drive_t
*drive
, struct request
*rq
);
1135 int ide_queue_sense_rq(ide_drive_t
*drive
, void *special
);
1137 int ide_cd_expiry(ide_drive_t
*);
1139 int ide_cd_get_xferlen(struct request
*);
1141 ide_startstop_t
ide_issue_pc(ide_drive_t
*, struct ide_cmd
*);
1143 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, struct ide_cmd
*);
1145 void ide_pio_bytes(ide_drive_t
*, struct ide_cmd
*, unsigned int, unsigned int);
1147 void ide_finish_cmd(ide_drive_t
*, struct ide_cmd
*, u8
);
1149 int ide_raw_taskfile(ide_drive_t
*, struct ide_cmd
*, u8
*, u16
);
1150 int ide_no_data_taskfile(ide_drive_t
*, struct ide_cmd
*);
1152 int ide_taskfile_ioctl(ide_drive_t
*, unsigned long);
1154 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*, int);
1156 extern int ide_driveid_update(ide_drive_t
*);
1157 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1158 extern u8
eighty_ninty_three (ide_drive_t
*);
1159 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1161 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1163 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1165 extern void ide_timer_expiry(unsigned long);
1166 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1167 extern void do_ide_request(struct request_queue
*);
1168 extern void ide_requeue_and_plug(ide_drive_t
*drive
, struct request
*rq
);
1170 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1172 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1173 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1174 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1176 #define ide_pci_register_driver(d) pci_register_driver(d)
1179 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1181 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1186 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1187 struct ide_hw
*, struct ide_hw
**);
1188 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1190 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1191 int ide_pci_set_master(struct pci_dev
*, const char *);
1192 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1193 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1194 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1196 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1197 const struct ide_port_info
*d
)
1203 struct ide_pci_enablebit
{
1204 u8 reg
; /* byte pci reg holding the enable-bit */
1205 u8 mask
; /* mask to isolate the enable-bit */
1206 u8 val
; /* value of masked reg when "enabled" */
1210 /* Uses ISA control ports not PCI ones. */
1211 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1212 /* single port device */
1213 IDE_HFLAG_SINGLE
= (1 << 1),
1214 /* don't use legacy PIO blacklist */
1215 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1216 /* set for the second port of QD65xx */
1217 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1218 /* use PIO8/9 for prefetch off/on */
1219 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1220 /* use PIO6/7 for fast-devsel off/on */
1221 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1222 /* use 100-102 and 200-202 PIO values to set DMA modes */
1223 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1225 * keep DMA setting when programming PIO mode, may be used only
1226 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1228 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1229 /* program host for the transfer mode after programming device */
1230 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1231 /* don't program host/device for the transfer mode ("smart" hosts) */
1232 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1233 /* trust BIOS for programming chipset/device for DMA */
1234 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1235 /* host is CS5510/CS5520 */
1236 IDE_HFLAG_CS5520
= (1 << 11),
1237 /* ATAPI DMA is unsupported */
1238 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1239 /* set if host is a "non-bootable" controller */
1240 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1241 /* host doesn't support DMA */
1242 IDE_HFLAG_NO_DMA
= (1 << 14),
1243 /* check if host is PCI IDE device before allowing DMA */
1244 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1245 /* host uses MMIO */
1246 IDE_HFLAG_MMIO
= (1 << 16),
1248 IDE_HFLAG_NO_LBA48
= (1 << 17),
1250 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1251 /* data FIFO is cleared by an error */
1252 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1253 /* serialize ports */
1254 IDE_HFLAG_SERIALIZE
= (1 << 20),
1255 /* host is DTC2278 */
1256 IDE_HFLAG_DTC2278
= (1 << 21),
1257 /* 4 devices on a single set of I/O ports */
1258 IDE_HFLAG_4DRIVES
= (1 << 22),
1259 /* host is TRM290 */
1260 IDE_HFLAG_TRM290
= (1 << 23),
1261 /* use 32-bit I/O ops */
1262 IDE_HFLAG_IO_32BIT
= (1 << 24),
1264 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1265 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1266 /* serialize ports if DMA is possible (for sl82c105) */
1267 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1268 /* force host out of "simplex" mode */
1269 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1270 /* DSC overlap is unsupported */
1271 IDE_HFLAG_NO_DSC
= (1 << 29),
1272 /* never use 32-bit I/O ops */
1273 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1274 /* never unmask IRQs */
1275 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1278 #ifdef CONFIG_BLK_DEV_OFFBOARD
1279 # define IDE_HFLAG_OFF_BOARD 0
1281 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1284 struct ide_port_info
{
1287 int (*init_chipset
)(struct pci_dev
*);
1289 void (*get_lock
)(irq_handler_t
, void *);
1290 void (*release_lock
)(void);
1292 void (*init_iops
)(ide_hwif_t
*);
1293 void (*init_hwif
)(ide_hwif_t
*);
1294 int (*init_dma
)(ide_hwif_t
*,
1295 const struct ide_port_info
*);
1297 const struct ide_tp_ops
*tp_ops
;
1298 const struct ide_port_ops
*port_ops
;
1299 const struct ide_dma_ops
*dma_ops
;
1301 struct ide_pci_enablebit enablebits
[2];
1303 hwif_chipset_t chipset
;
1305 u16 max_sectors
; /* if < than the default one */
1317 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1318 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1319 const struct ide_port_info
*, void *);
1320 void ide_pci_remove(struct pci_dev
*);
1323 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1324 int ide_pci_resume(struct pci_dev
*);
1326 #define ide_pci_suspend NULL
1327 #define ide_pci_resume NULL
1330 void ide_map_sg(ide_drive_t
*, struct ide_cmd
*);
1331 void ide_init_sg_cmd(struct ide_cmd
*, unsigned int);
1333 #define BAD_DMA_DRIVE 0
1334 #define GOOD_DMA_DRIVE 1
1336 struct drive_list_entry
{
1337 const char *id_model
;
1338 const char *id_firmware
;
1341 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1343 #ifdef CONFIG_BLK_DEV_IDEDMA
1344 int ide_dma_good_drive(ide_drive_t
*);
1345 int __ide_dma_bad_drive(ide_drive_t
*);
1347 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1349 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1351 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1354 void ide_dma_off_quietly(ide_drive_t
*);
1355 void ide_dma_off(ide_drive_t
*);
1356 void ide_dma_on(ide_drive_t
*);
1357 int ide_set_dma(ide_drive_t
*);
1358 void ide_check_dma_crc(ide_drive_t
*);
1359 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1361 int ide_allocate_dma_engine(ide_hwif_t
*);
1362 void ide_release_dma_engine(ide_hwif_t
*);
1364 int ide_dma_prepare(ide_drive_t
*, struct ide_cmd
*);
1365 void ide_dma_unmap_sg(ide_drive_t
*, struct ide_cmd
*);
1367 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1368 int config_drive_for_dma(ide_drive_t
*);
1369 int ide_build_dmatable(ide_drive_t
*, struct ide_cmd
*);
1370 void ide_dma_host_set(ide_drive_t
*, int);
1371 int ide_dma_setup(ide_drive_t
*, struct ide_cmd
*);
1372 extern void ide_dma_start(ide_drive_t
*);
1373 int ide_dma_end(ide_drive_t
*);
1374 int ide_dma_test_irq(ide_drive_t
*);
1375 int ide_dma_sff_timer_expiry(ide_drive_t
*);
1376 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1377 extern const struct ide_dma_ops sff_dma_ops
;
1379 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1380 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1382 void ide_dma_lost_irq(ide_drive_t
*);
1383 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1386 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1387 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1388 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1389 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1390 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1391 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1392 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1393 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1394 static inline ide_startstop_t
ide_dma_intr(ide_drive_t
*drive
) { return ide_stopped
; }
1395 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1396 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1397 static inline int ide_dma_prepare(ide_drive_t
*drive
,
1398 struct ide_cmd
*cmd
) { return 1; }
1399 static inline void ide_dma_unmap_sg(ide_drive_t
*drive
,
1400 struct ide_cmd
*cmd
) { ; }
1401 #endif /* CONFIG_BLK_DEV_IDEDMA */
1403 #ifdef CONFIG_BLK_DEV_IDEACPI
1404 int ide_acpi_init(void);
1405 bool ide_port_acpi(ide_hwif_t
*hwif
);
1406 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1407 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1408 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1409 void ide_acpi_init_port(ide_hwif_t
*);
1410 void ide_acpi_port_init_devices(ide_hwif_t
*);
1411 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1413 static inline int ide_acpi_init(void) { return 0; }
1414 static inline bool ide_port_acpi(ide_hwif_t
*hwif
) { return 0; }
1415 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1416 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1417 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1418 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1419 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1420 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1423 void ide_register_region(struct gendisk
*);
1424 void ide_unregister_region(struct gendisk
*);
1426 void ide_check_nien_quirk_list(ide_drive_t
*);
1427 void ide_undecoded_slave(ide_drive_t
*);
1429 void ide_port_apply_params(ide_hwif_t
*);
1430 int ide_sysfs_register_port(ide_hwif_t
*);
1432 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, struct ide_hw
**,
1434 void ide_host_free(struct ide_host
*);
1435 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1437 int ide_host_add(const struct ide_port_info
*, struct ide_hw
**, unsigned int,
1438 struct ide_host
**);
1439 void ide_host_remove(struct ide_host
*);
1440 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1441 void ide_port_unregister_devices(ide_hwif_t
*);
1442 void ide_port_scan(ide_hwif_t
*);
1444 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1446 return hwif
->hwif_data
;
1449 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1451 hwif
->hwif_data
= data
;
1454 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1456 u64
ide_get_lba_addr(struct ide_cmd
*, int);
1457 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1462 u16 act8b
; /* t2 for 8-bit io */
1463 u16 rec8b
; /* t2i for 8-bit io */
1464 u16 cyc8b
; /* t0 for 8-bit io */
1465 u16 active
; /* t2 or tD */
1466 u16 recover
; /* t2i or tK */
1468 u16 udma
; /* t2CYCTYP/2 */
1472 IDE_TIMING_SETUP
= (1 << 0),
1473 IDE_TIMING_ACT8B
= (1 << 1),
1474 IDE_TIMING_REC8B
= (1 << 2),
1475 IDE_TIMING_CYC8B
= (1 << 3),
1476 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1478 IDE_TIMING_ACTIVE
= (1 << 4),
1479 IDE_TIMING_RECOVER
= (1 << 5),
1480 IDE_TIMING_CYCLE
= (1 << 6),
1481 IDE_TIMING_UDMA
= (1 << 7),
1482 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1483 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1484 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1487 struct ide_timing
*ide_timing_find_mode(u8
);
1488 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1489 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1490 struct ide_timing
*, unsigned int);
1491 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1493 #ifdef CONFIG_IDE_XFER_MODE
1494 int ide_scan_pio_blacklist(char *);
1495 const char *ide_xfer_verbose(u8
);
1496 int ide_pio_need_iordy(ide_drive_t
*, const u8
);
1497 int ide_set_pio_mode(ide_drive_t
*, u8
);
1498 int ide_set_dma_mode(ide_drive_t
*, u8
);
1499 void ide_set_pio(ide_drive_t
*, u8
);
1500 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1502 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1503 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1506 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1508 ide_set_pio(drive
, 255);
1511 char *ide_media_string(ide_drive_t
*);
1513 extern const struct attribute_group
*ide_dev_groups
[];
1514 extern struct bus_type ide_bus_type
;
1515 extern struct class *ide_port_class
;
1517 static inline void ide_dump_identify(u8
*id
)
1519 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1522 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1524 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1527 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1529 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1531 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1534 static inline void *ide_get_drivedata(ide_drive_t
*drive
)
1536 return drive
->drive_data
;
1539 static inline void ide_set_drivedata(ide_drive_t
*drive
, void *data
)
1541 drive
->drive_data
= data
;
1544 #define ide_port_for_each_dev(i, dev, port) \
1545 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1547 #define ide_port_for_each_present_dev(i, dev, port) \
1548 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1549 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1551 #define ide_host_for_each_port(i, port, host) \
1552 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)