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 /* for request_sense */
30 #include <linux/cdrom.h>
32 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
33 # define SUPPORT_VLB_SYNC 0
35 # define SUPPORT_VLB_SYNC 1
39 * Probably not wise to fiddle with these
41 #define IDE_DEFAULT_MAX_FAILURES 1
42 #define ERROR_MAX 8 /* Max read/write errors per sector */
43 #define ERROR_RESET 3 /* Reset controller every 4th retry */
44 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
46 /* Error codes returned in rq->errors to the higher part of the driver. */
48 IDE_DRV_ERROR_GENERAL
= 101,
49 IDE_DRV_ERROR_FILEMARK
= 102,
50 IDE_DRV_ERROR_EOD
= 103,
54 * Definitions for accessing IDE controller registers
56 #define IDE_NR_PORTS (10)
59 unsigned long data_addr
;
62 unsigned long error_addr
; /* read: error */
63 unsigned long feature_addr
; /* write: feature */
66 unsigned long nsect_addr
;
67 unsigned long lbal_addr
;
68 unsigned long lbam_addr
;
69 unsigned long lbah_addr
;
71 unsigned long device_addr
;
74 unsigned long status_addr
; /* read: status */
75 unsigned long command_addr
; /* write: command */
78 unsigned long ctl_addr
;
80 unsigned long irq_addr
;
83 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
85 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
90 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
92 #define SATA_NR_PORTS (3) /* 16 possible ?? */
94 #define SATA_STATUS_OFFSET (0)
95 #define SATA_ERROR_OFFSET (1)
96 #define SATA_CONTROL_OFFSET (2)
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
115 #define PRD_ENTRIES 256
118 * Some more useful definitions
120 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
121 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122 #define SECTOR_SIZE 512
125 * Timeouts for various operations:
128 /* spec allows up to 20ms */
129 WAIT_DRQ
= HZ
/ 10, /* 100ms */
130 /* some laptops are very slow */
131 WAIT_READY
= 5 * HZ
, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD
= 10 * HZ
, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
145 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
154 #define REQ_DRIVE_RESET 0x20
155 #define REQ_DEVSET_EXEC 0x21
156 #define REQ_PARK_HEADS 0x22
157 #define REQ_UNPARK_HEADS 0x23
160 * Check for an interrupt and acknowledge the interrupt status
163 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
166 * hwif_chipset_t is used to keep track of the specific hardware
167 * chipset used by each IDE interface, if known.
169 enum { ide_unknown
, ide_generic
, ide_pci
,
170 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
171 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
172 ide_4drives
, ide_pmac
, ide_acorn
,
173 ide_au1xxx
, ide_palm3710
176 typedef u8 hwif_chipset_t
;
179 * Structure to hold all information about the location of this port
183 struct ide_io_ports io_ports
;
184 unsigned long io_ports_array
[IDE_NR_PORTS
];
187 int irq
; /* our irq number */
188 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
189 struct device
*dev
, *parent
;
190 unsigned long config
;
193 static inline void ide_std_init_ports(struct ide_hw
*hw
,
194 unsigned long io_addr
,
195 unsigned long ctl_addr
)
199 for (i
= 0; i
<= 7; i
++)
200 hw
->io_ports_array
[i
] = io_addr
++;
202 hw
->io_ports
.ctl_addr
= ctl_addr
;
208 * Now for the data we need to maintain per-drive: ide_drive_t
211 #define ide_scsi 0x21
212 #define ide_disk 0x20
213 #define ide_optical 0x7
214 #define ide_cdrom 0x5
216 #define ide_floppy 0x0
219 * Special Driver Flags
222 IDE_SFLAG_SET_GEOMETRY
= (1 << 0),
223 IDE_SFLAG_RECALIBRATE
= (1 << 1),
224 IDE_SFLAG_SET_MULTMODE
= (1 << 2),
228 * Status returned from various ide_ functions
231 ide_stopped
, /* no drive operation was started */
232 ide_started
, /* a drive operation was started, handler was set */
236 IDE_VALID_ERROR
= (1 << 1),
237 IDE_VALID_FEATURE
= IDE_VALID_ERROR
,
238 IDE_VALID_NSECT
= (1 << 2),
239 IDE_VALID_LBAL
= (1 << 3),
240 IDE_VALID_LBAM
= (1 << 4),
241 IDE_VALID_LBAH
= (1 << 5),
242 IDE_VALID_DEVICE
= (1 << 6),
243 IDE_VALID_LBA
= IDE_VALID_LBAL
|
246 IDE_VALID_OUT_TF
= IDE_VALID_FEATURE
|
249 IDE_VALID_IN_TF
= IDE_VALID_NSECT
|
251 IDE_VALID_OUT_HOB
= IDE_VALID_OUT_TF
,
252 IDE_VALID_IN_HOB
= IDE_VALID_ERROR
|
258 IDE_TFLAG_LBA48
= (1 << 0),
259 IDE_TFLAG_WRITE
= (1 << 1),
260 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 2),
261 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 3),
262 /* force 16-bit I/O operations */
263 IDE_TFLAG_IO_16BIT
= (1 << 4),
264 /* struct ide_cmd was allocated using kmalloc() */
265 IDE_TFLAG_DYN
= (1 << 5),
266 IDE_TFLAG_FS
= (1 << 6),
267 IDE_TFLAG_MULTI_PIO
= (1 << 7),
271 IDE_FTFLAG_FLAGGED
= (1 << 0),
272 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
273 IDE_FTFLAG_OUT_DATA
= (1 << 2),
274 IDE_FTFLAG_IN_DATA
= (1 << 3),
277 struct ide_taskfile
{
278 u8 data
; /* 0: data byte (for TASKFILE ioctl) */
280 u8 error
; /* read: error */
281 u8 feature
; /* write: feature */
283 u8 nsect
; /* 2: number of sectors */
284 u8 lbal
; /* 3: LBA low */
285 u8 lbam
; /* 4: LBA mid */
286 u8 lbah
; /* 5: LBA high */
287 u8 device
; /* 6: device select */
289 u8 status
; /* read: status */
290 u8 command
; /* write: command */
295 struct ide_taskfile tf
;
296 struct ide_taskfile hob
;
305 u8 ftf_flags
; /* for TASKFILE ioctl */
308 int sg_nents
; /* number of sg entries */
310 int sg_dma_direction
; /* DMA transfer direction */
314 unsigned int last_xfer_len
;
316 struct scatterlist
*cursg
;
317 unsigned int cursg_ofs
;
319 struct request
*rq
; /* copy of request */
322 /* ATAPI packet command flags */
324 /* set when an error is considered normal - no retry (ide-tape) */
325 PC_FLAG_ABORT
= (1 << 0),
326 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
327 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
328 PC_FLAG_DMA_OK
= (1 << 3),
329 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
330 PC_FLAG_DMA_ERROR
= (1 << 5),
331 PC_FLAG_WRITING
= (1 << 6),
335 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
336 * This is used for several packet commands (not for READ/WRITE commands).
338 #define IDE_PC_BUFFER_SIZE 64
339 #define ATAPI_WAIT_PC (60 * HZ)
341 struct ide_atapi_pc
{
342 /* actual packet bytes */
344 /* incremented on each retry */
348 /* bytes to transfer */
350 /* bytes actually transferred */
357 /* the corresponding request */
363 * those are more or less driver-specific and some of them are subject
364 * to change/removal later.
366 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
368 unsigned long timeout
;
374 #ifdef CONFIG_BLK_DEV_IDEACPI
375 struct ide_acpi_drive_link
;
376 struct ide_acpi_hwif_link
;
381 struct ide_disk_ops
{
382 int (*check
)(struct ide_drive_s
*, const char *);
383 int (*get_capacity
)(struct ide_drive_s
*);
384 u64 (*set_capacity
)(struct ide_drive_s
*, u64
);
385 void (*setup
)(struct ide_drive_s
*);
386 void (*flush
)(struct ide_drive_s
*);
387 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
388 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
390 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
392 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
393 fmode_t
, unsigned int, unsigned long);
396 /* ATAPI device flags */
398 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
401 /* Drive cannot eject the disc. */
402 IDE_AFLAG_NO_EJECT
= (1 << 1),
403 /* Drive is a pre ATAPI 1.2 drive. */
404 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
405 /* TOC addresses are in BCD. */
406 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
407 /* TOC track numbers are in BCD. */
408 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
409 /* Saved TOC information is current. */
410 IDE_AFLAG_TOC_VALID
= (1 << 6),
411 /* We think that the drive door is locked. */
412 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
413 /* SET_CD_SPEED command is unsupported. */
414 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
415 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
416 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
417 IDE_AFLAG_SANYO_3CD
= (1 << 11),
418 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
419 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
420 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
423 /* Avoid commands not supported in Clik drive */
424 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
425 /* Requires BH algorithm for packets */
426 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
427 /* Supports format progress report */
428 IDE_AFLAG_SRFP
= (1 << 17),
431 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
432 /* 0 When the tape position is unknown */
433 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
434 /* Device already opened */
435 IDE_AFLAG_BUSY
= (1 << 20),
436 /* Attempt to auto-detect the current user block size */
437 IDE_AFLAG_DETECT_BS
= (1 << 21),
438 /* Currently on a filemark */
439 IDE_AFLAG_FILEMARK
= (1 << 22),
440 /* 0 = no tape is loaded, so we don't rewind after ejecting */
441 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
443 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
448 /* restore settings after device reset */
449 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
450 /* device is using DMA for read/write */
451 IDE_DFLAG_USING_DMA
= (1 << 1),
452 /* okay to unmask other IRQs */
453 IDE_DFLAG_UNMASK
= (1 << 2),
454 /* don't attempt flushes */
455 IDE_DFLAG_NOFLUSH
= (1 << 3),
457 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
458 /* give potential excess bandwidth */
459 IDE_DFLAG_NICE1
= (1 << 5),
460 /* device is physically present */
461 IDE_DFLAG_PRESENT
= (1 << 6),
462 /* disable Host Protected Area */
463 IDE_DFLAG_NOHPA
= (1 << 7),
464 /* id read from device (synthetic if not set) */
465 IDE_DFLAG_ID_READ
= (1 << 8),
466 IDE_DFLAG_NOPROBE
= (1 << 9),
467 /* need to do check_media_change() */
468 IDE_DFLAG_REMOVABLE
= (1 << 10),
469 /* needed for removable devices */
470 IDE_DFLAG_ATTACH
= (1 << 11),
471 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
472 /* disallow setting unmask bit */
473 IDE_DFLAG_NO_UNMASK
= (1 << 13),
474 /* disallow enabling 32-bit I/O */
475 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
476 /* for removable only: door lock/unlock works */
477 IDE_DFLAG_DOORLOCKING
= (1 << 15),
479 IDE_DFLAG_NODMA
= (1 << 16),
480 /* powermanagment told us not to do anything, so sleep nicely */
481 IDE_DFLAG_BLOCKED
= (1 << 17),
482 /* sleeping & sleep field valid */
483 IDE_DFLAG_SLEEPING
= (1 << 18),
484 IDE_DFLAG_POST_RESET
= (1 << 19),
485 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
486 IDE_DFLAG_LBA48
= (1 << 21),
487 /* status of write cache */
488 IDE_DFLAG_WCACHE
= (1 << 22),
489 /* used for ignoring ATA_DF */
490 IDE_DFLAG_NOWERR
= (1 << 23),
491 /* retrying in PIO */
492 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
493 IDE_DFLAG_LBA
= (1 << 25),
494 /* don't unload heads */
495 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
496 /* heads unloaded, please don't reset port */
497 IDE_DFLAG_PARKED
= (1 << 27),
498 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
500 IDE_DFLAG_WP
= (1 << 29),
501 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
502 IDE_DFLAG_NIEN_QUIRK
= (1 << 31),
506 char name
[4]; /* drive name, such as "hda" */
507 char driver_req
[10]; /* requests specific driver */
509 struct request_queue
*queue
; /* request queue */
511 struct request
*rq
; /* current request */
512 void *driver_data
; /* extra driver data */
513 u16
*id
; /* identification info */
514 #ifdef CONFIG_IDE_PROC_FS
515 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
516 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
518 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
520 const struct ide_disk_ops
*disk_ops
;
522 unsigned long dev_flags
;
524 unsigned long sleep
; /* sleep until this time */
525 unsigned long timeout
; /* max time to wait for irq */
527 u8 special_flags
; /* special action flags */
529 u8 select
; /* basic drive/head select reg value */
530 u8 retry_pio
; /* retrying dma capable host in pio */
531 u8 waiting_for_dma
; /* dma currently in progress */
532 u8 dma
; /* atapi dma flag */
534 u8 init_speed
; /* transfer rate set at boot */
535 u8 current_speed
; /* current transfer rate set */
536 u8 desired_speed
; /* desired transfer rate set */
537 u8 dn
; /* now wide spread use */
538 u8 acoustic
; /* acoustic management */
539 u8 media
; /* disk, cdrom, tape, floppy, ... */
540 u8 ready_stat
; /* min status value for drive ready */
541 u8 mult_count
; /* current multiple sector setting */
542 u8 mult_req
; /* requested multiple sector setting */
543 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
544 u8 bad_wstat
; /* used for ignoring ATA_DF */
545 u8 head
; /* "real" number of heads */
546 u8 sect
; /* "real" sectors per track */
547 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
548 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
550 /* delay this long before sending packet command */
553 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
554 unsigned int cyl
; /* "real" number of cyls */
555 unsigned int drive_data
; /* used by set_pio_mode/dev_select() */
556 unsigned int failures
; /* current failure count */
557 unsigned int max_failures
; /* maximum allowed failure count */
558 u64 probed_capacity
;/* initial/native media capacity */
559 u64 capacity64
; /* total number of sectors */
561 int lun
; /* logical unit */
562 int crc_count
; /* crc counter to reduce drive speed */
564 unsigned long debug_mask
; /* debugging levels switch */
566 #ifdef CONFIG_BLK_DEV_IDEACPI
567 struct ide_acpi_drive_link
*acpidata
;
569 struct list_head list
;
570 struct device gendev
;
571 struct completion gendev_rel_comp
; /* to deal with device release() */
573 /* current packet command */
574 struct ide_atapi_pc
*pc
;
576 /* last failed packet command */
577 struct ide_atapi_pc
*failed_pc
;
579 /* callback for packet commands */
580 int (*pc_callback
)(struct ide_drive_s
*, int);
582 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
584 unsigned long atapi_flags
;
586 struct ide_atapi_pc request_sense_pc
;
588 /* current sense rq and buffer */
590 struct request sense_rq
;
591 struct request_sense sense_data
;
594 typedef struct ide_drive_s ide_drive_t
;
596 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
598 #define to_ide_drv(obj, cont_type) \
599 container_of(obj, struct cont_type, dev)
601 #define ide_drv_g(disk, cont_type) \
602 container_of((disk)->private_data, struct cont_type, driver)
604 struct ide_port_info
;
607 void (*exec_command
)(struct hwif_s
*, u8
);
608 u8 (*read_status
)(struct hwif_s
*);
609 u8 (*read_altstatus
)(struct hwif_s
*);
610 void (*write_devctl
)(struct hwif_s
*, u8
);
612 void (*dev_select
)(ide_drive_t
*);
613 void (*tf_load
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
614 void (*tf_read
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
616 void (*input_data
)(ide_drive_t
*, struct ide_cmd
*,
617 void *, unsigned int);
618 void (*output_data
)(ide_drive_t
*, struct ide_cmd
*,
619 void *, unsigned int);
622 extern const struct ide_tp_ops default_tp_ops
;
625 * struct ide_port_ops - IDE port operations
627 * @init_dev: host specific initialization of a device
628 * @set_pio_mode: routine to program host for PIO mode
629 * @set_dma_mode: routine to program host for DMA mode
630 * @reset_poll: chipset polling based on hba specifics
631 * @pre_reset: chipset specific changes to default for device-hba resets
632 * @resetproc: routine to reset controller after a disk reset
633 * @maskproc: special host masking for drive selection
634 * @quirkproc: check host's drive quirk list
635 * @clear_irq: clear IRQ
637 * @mdma_filter: filter MDMA modes
638 * @udma_filter: filter UDMA modes
640 * @cable_detect: detect cable type
642 struct ide_port_ops
{
643 void (*init_dev
)(ide_drive_t
*);
644 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
645 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
646 int (*reset_poll
)(ide_drive_t
*);
647 void (*pre_reset
)(ide_drive_t
*);
648 void (*resetproc
)(ide_drive_t
*);
649 void (*maskproc
)(ide_drive_t
*, int);
650 void (*quirkproc
)(ide_drive_t
*);
651 void (*clear_irq
)(ide_drive_t
*);
653 u8 (*mdma_filter
)(ide_drive_t
*);
654 u8 (*udma_filter
)(ide_drive_t
*);
656 u8 (*cable_detect
)(struct hwif_s
*);
660 void (*dma_host_set
)(struct ide_drive_s
*, int);
661 int (*dma_setup
)(struct ide_drive_s
*, struct ide_cmd
*);
662 void (*dma_start
)(struct ide_drive_s
*);
663 int (*dma_end
)(struct ide_drive_s
*);
664 int (*dma_test_irq
)(struct ide_drive_s
*);
665 void (*dma_lost_irq
)(struct ide_drive_s
*);
666 /* below ones are optional */
667 int (*dma_check
)(struct ide_drive_s
*, struct ide_cmd
*);
668 int (*dma_timer_expiry
)(struct ide_drive_s
*);
669 void (*dma_clear
)(struct ide_drive_s
*);
671 * The following method is optional and only required to be
672 * implemented for the SFF-8038i compatible controllers.
674 u8 (*dma_sff_read_status
)(struct hwif_s
*);
679 typedef struct hwif_s
{
680 struct hwif_s
*mate
; /* other hwif from same PCI chip */
681 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
683 struct ide_host
*host
;
685 char name
[6]; /* name of interface, eg. "ide0" */
687 struct ide_io_ports io_ports
;
689 unsigned long sata_scr
[SATA_NR_PORTS
];
691 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
693 u8 major
; /* our major number */
694 u8 index
; /* 0 for ide0; 1 for ide1; ... */
695 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
705 u8 cbl
; /* cable type */
707 hwif_chipset_t chipset
; /* sub-module for tuning.. */
711 ide_ack_intr_t
*ack_intr
;
713 void (*rw_disk
)(ide_drive_t
*, struct request
*);
715 const struct ide_tp_ops
*tp_ops
;
716 const struct ide_port_ops
*port_ops
;
717 const struct ide_dma_ops
*dma_ops
;
719 /* dma physical region descriptor table (cpu view) */
720 unsigned int *dmatable_cpu
;
721 /* dma physical region descriptor table (dma view) */
722 dma_addr_t dmatable_dma
;
724 /* maximum number of PRD table entries */
726 /* PRD entry size in bytes */
729 /* Scatter-gather list used to build the above */
730 struct scatterlist
*sg_table
;
731 int sg_max_nents
; /* Maximum number of entries in it */
733 struct ide_cmd cmd
; /* current command */
735 int rqsize
; /* max sectors per request */
736 int irq
; /* our irq number */
738 unsigned long dma_base
; /* base addr for dma ports */
740 unsigned long config_data
; /* for use by chipset-specific code */
741 unsigned long select_data
; /* for use by chipset-specific code */
743 unsigned long extra_base
; /* extra addr for dma ports */
744 unsigned extra_ports
; /* number of extra dma ports */
746 unsigned present
: 1; /* this interface exists */
747 unsigned busy
: 1; /* serializes devices on a port */
749 struct device gendev
;
750 struct device
*portdev
;
752 struct completion gendev_rel_comp
; /* To deal with device release() */
754 void *hwif_data
; /* extra hwif data */
756 #ifdef CONFIG_BLK_DEV_IDEACPI
757 struct ide_acpi_hwif_link
*acpidata
;
760 /* IRQ handler, if active */
761 ide_startstop_t (*handler
)(ide_drive_t
*);
763 /* BOOL: polling active & poll_timeout field valid */
764 unsigned int polling
: 1;
767 ide_drive_t
*cur_dev
;
769 /* current request */
773 struct timer_list timer
;
774 /* timeout value during long polls */
775 unsigned long poll_timeout
;
776 /* queried upon timeouts */
777 int (*expiry
)(ide_drive_t
*);
783 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
785 #define MAX_HOST_PORTS 4
788 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
789 unsigned int n_ports
;
790 struct device
*dev
[2];
792 int (*init_chipset
)(struct pci_dev
*);
794 void (*get_lock
)(irq_handler_t
, void *);
795 void (*release_lock
)(void);
797 irq_handler_t irq_handler
;
799 unsigned long host_flags
;
804 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
806 /* used for hosts requiring serialization */
807 volatile unsigned long host_busy
;
810 #define IDE_HOST_BUSY 0
813 * internal ide interrupt handler type
815 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
816 typedef int (ide_expiry_t
)(ide_drive_t
*);
818 /* used by ide-cd, ide-floppy, etc. */
819 typedef void (xfer_func_t
)(ide_drive_t
*, struct ide_cmd
*, void *, unsigned);
821 extern struct mutex ide_setting_mtx
;
824 * configurable drive settings
827 #define DS_SYNC (1 << 0)
830 int (*get
)(ide_drive_t
*);
831 int (*set
)(ide_drive_t
*, int);
835 #define __DEVSET(_flags, _get, _set) { \
841 #define ide_devset_get(name, field) \
842 static int get_##name(ide_drive_t *drive) \
844 return drive->field; \
847 #define ide_devset_set(name, field) \
848 static int set_##name(ide_drive_t *drive, int arg) \
850 drive->field = arg; \
854 #define ide_devset_get_flag(name, flag) \
855 static int get_##name(ide_drive_t *drive) \
857 return !!(drive->dev_flags & flag); \
860 #define ide_devset_set_flag(name, flag) \
861 static int set_##name(ide_drive_t *drive, int arg) \
864 drive->dev_flags |= flag; \
866 drive->dev_flags &= ~flag; \
870 #define __IDE_DEVSET(_name, _flags, _get, _set) \
871 const struct ide_devset ide_devset_##_name = \
872 __DEVSET(_flags, _get, _set)
874 #define IDE_DEVSET(_name, _flags, _get, _set) \
875 static __IDE_DEVSET(_name, _flags, _get, _set)
877 #define ide_devset_rw(_name, _func) \
878 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
880 #define ide_devset_w(_name, _func) \
881 IDE_DEVSET(_name, 0, NULL, set_##_func)
883 #define ide_ext_devset_rw(_name, _func) \
884 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
886 #define ide_ext_devset_rw_sync(_name, _func) \
887 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
889 #define ide_decl_devset(_name) \
890 extern const struct ide_devset ide_devset_##_name
892 ide_decl_devset(io_32bit
);
893 ide_decl_devset(keepsettings
);
894 ide_decl_devset(pio_mode
);
895 ide_decl_devset(unmaskirq
);
896 ide_decl_devset(using_dma
);
898 #ifdef CONFIG_IDE_PROC_FS
900 * /proc/ide interface
903 #define ide_devset_rw_field(_name, _field) \
904 ide_devset_get(_name, _field); \
905 ide_devset_set(_name, _field); \
906 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
908 #define ide_devset_rw_flag(_name, _field) \
909 ide_devset_get_flag(_name, _field); \
910 ide_devset_set_flag(_name, _field); \
911 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
913 struct ide_proc_devset
{
915 const struct ide_devset
*setting
;
917 int (*mulf
)(ide_drive_t
*);
918 int (*divf
)(ide_drive_t
*);
921 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
922 .name = __stringify(_name), \
923 .setting = &ide_devset_##_name, \
930 #define IDE_PROC_DEVSET(_name, _min, _max) \
931 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
936 read_proc_t
*read_proc
;
937 write_proc_t
*write_proc
;
940 void proc_ide_create(void);
941 void proc_ide_destroy(void);
942 void ide_proc_register_port(ide_hwif_t
*);
943 void ide_proc_port_register_devices(ide_hwif_t
*);
944 void ide_proc_unregister_device(ide_drive_t
*);
945 void ide_proc_unregister_port(ide_hwif_t
*);
946 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
947 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
949 read_proc_t proc_ide_read_capacity
;
950 read_proc_t proc_ide_read_geometry
;
953 * Standard exit stuff:
955 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
964 *start = page + off; \
968 static inline void proc_ide_create(void) { ; }
969 static inline void proc_ide_destroy(void) { ; }
970 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
971 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
972 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
973 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
974 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
975 struct ide_driver
*driver
) { ; }
976 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
977 struct ide_driver
*driver
) { ; }
978 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
982 /* enter/exit functions */
983 IDE_DBG_FUNC
= (1 << 0),
984 /* sense key/asc handling */
985 IDE_DBG_SENSE
= (1 << 1),
986 /* packet commands handling */
987 IDE_DBG_PC
= (1 << 2),
988 /* request handling */
989 IDE_DBG_RQ
= (1 << 3),
990 /* driver probing/setup */
991 IDE_DBG_PROBE
= (1 << 4),
994 /* DRV_NAME has to be defined in the driver before using the macro below */
995 #define __ide_debug_log(lvl, fmt, args...) \
997 if (unlikely(drive->debug_mask & lvl)) \
998 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
999 __func__, ## args); \
1003 * Power Management state machine (rq->pm->pm_step).
1005 * For each step, the core calls ide_start_power_step() first.
1007 * - ide_stopped : In this case, the core calls us back again unless
1008 * step have been set to ide_power_state_completed.
1009 * - ide_started : In this case, the channel is left busy until an
1010 * async event (interrupt) occurs.
1011 * Typically, ide_start_power_step() will issue a taskfile request with
1014 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1015 * with the error code if any. This routine should update the step value
1016 * and return. It should not start a new request. The core will call
1017 * ide_start_power_step() for the new step value, unless step have been
1018 * set to IDE_PM_COMPLETED.
1021 IDE_PM_START_SUSPEND
,
1022 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1025 IDE_PM_START_RESUME
,
1026 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1033 int generic_ide_suspend(struct device
*, pm_message_t
);
1034 int generic_ide_resume(struct device
*);
1036 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1037 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1038 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1039 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1042 * Subdrivers support.
1044 * The gendriver.owner field should be set to the module owner of this driver.
1045 * The gendriver.name field should be set to the name of this driver
1048 const char *version
;
1049 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1050 struct device_driver gen_driver
;
1051 int (*probe
)(ide_drive_t
*);
1052 void (*remove
)(ide_drive_t
*);
1053 void (*resume
)(ide_drive_t
*);
1054 void (*shutdown
)(ide_drive_t
*);
1055 #ifdef CONFIG_IDE_PROC_FS
1056 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1057 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1061 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1063 int ide_device_get(ide_drive_t
*);
1064 void ide_device_put(ide_drive_t
*);
1066 struct ide_ioctl_devset
{
1067 unsigned int get_ioctl
;
1068 unsigned int set_ioctl
;
1069 const struct ide_devset
*setting
;
1072 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1073 unsigned long, const struct ide_ioctl_devset
*);
1075 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1077 extern int ide_vlb_clk
;
1078 extern int ide_pci_clk
;
1080 unsigned int ide_rq_bytes(struct request
*);
1081 int ide_end_rq(ide_drive_t
*, struct request
*, int, unsigned int);
1082 void ide_kill_rq(ide_drive_t
*, struct request
*);
1084 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1085 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1087 void ide_execute_command(ide_drive_t
*, struct ide_cmd
*, ide_handler_t
*,
1090 void ide_pad_transfer(ide_drive_t
*, int, int);
1092 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1094 void ide_fix_driveid(u16
*);
1096 extern void ide_fixstring(u8
*, const int, const int);
1098 int ide_busy_sleep(ide_drive_t
*, unsigned long, int);
1100 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1102 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1103 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1105 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1107 extern int ide_devset_execute(ide_drive_t
*drive
,
1108 const struct ide_devset
*setting
, int arg
);
1110 void ide_complete_cmd(ide_drive_t
*, struct ide_cmd
*, u8
, u8
);
1111 int ide_complete_rq(ide_drive_t
*, int, unsigned int);
1113 void ide_tf_readback(ide_drive_t
*drive
, struct ide_cmd
*cmd
);
1114 void ide_tf_dump(const char *, struct ide_cmd
*);
1116 void ide_exec_command(ide_hwif_t
*, u8
);
1117 u8
ide_read_status(ide_hwif_t
*);
1118 u8
ide_read_altstatus(ide_hwif_t
*);
1119 void ide_write_devctl(ide_hwif_t
*, u8
);
1121 void ide_dev_select(ide_drive_t
*);
1122 void ide_tf_load(ide_drive_t
*, struct ide_taskfile
*, u8
);
1123 void ide_tf_read(ide_drive_t
*, struct ide_taskfile
*, u8
);
1125 void ide_input_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1126 void ide_output_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1128 void SELECT_MASK(ide_drive_t
*, int);
1130 u8
ide_read_error(ide_drive_t
*);
1131 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1133 int ide_check_atapi_device(ide_drive_t
*, const char *);
1135 void ide_init_pc(struct ide_atapi_pc
*);
1137 /* Disk head parking */
1138 extern wait_queue_head_t ide_park_wq
;
1139 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1141 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1142 const char *buf
, size_t len
);
1145 * Special requests for ide-tape block device strategy routine.
1147 * In order to service a character device command, we add special requests to
1148 * the tail of our block device request queue and wait for their completion.
1151 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1152 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1153 REQ_IDETAPE_READ
= (1 << 2),
1154 REQ_IDETAPE_WRITE
= (1 << 3),
1157 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1159 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1160 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1161 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1162 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1163 void ide_retry_pc(ide_drive_t
*drive
);
1165 void ide_prep_sense(ide_drive_t
*drive
, struct request
*rq
);
1166 int ide_queue_sense_rq(ide_drive_t
*drive
, void *special
);
1168 int ide_cd_expiry(ide_drive_t
*);
1170 int ide_cd_get_xferlen(struct request
*);
1172 ide_startstop_t
ide_issue_pc(ide_drive_t
*, struct ide_cmd
*);
1174 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, struct ide_cmd
*);
1176 void ide_pio_bytes(ide_drive_t
*, struct ide_cmd
*, unsigned int, unsigned int);
1178 void ide_finish_cmd(ide_drive_t
*, struct ide_cmd
*, u8
);
1180 int ide_raw_taskfile(ide_drive_t
*, struct ide_cmd
*, u8
*, u16
);
1181 int ide_no_data_taskfile(ide_drive_t
*, struct ide_cmd
*);
1183 int ide_taskfile_ioctl(ide_drive_t
*, unsigned long);
1185 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*);
1187 extern int ide_driveid_update(ide_drive_t
*);
1188 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1189 extern u8
eighty_ninty_three (ide_drive_t
*);
1190 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1192 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1194 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1196 extern void ide_timer_expiry(unsigned long);
1197 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1198 extern void do_ide_request(struct request_queue
*);
1200 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1202 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1203 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1204 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1206 #define ide_pci_register_driver(d) pci_register_driver(d)
1209 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1211 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1216 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1217 struct ide_hw
*, struct ide_hw
**);
1218 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1220 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1221 int ide_pci_set_master(struct pci_dev
*, const char *);
1222 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1223 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1224 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1226 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1227 const struct ide_port_info
*d
)
1233 struct ide_pci_enablebit
{
1234 u8 reg
; /* byte pci reg holding the enable-bit */
1235 u8 mask
; /* mask to isolate the enable-bit */
1236 u8 val
; /* value of masked reg when "enabled" */
1240 /* Uses ISA control ports not PCI ones. */
1241 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1242 /* single port device */
1243 IDE_HFLAG_SINGLE
= (1 << 1),
1244 /* don't use legacy PIO blacklist */
1245 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1246 /* set for the second port of QD65xx */
1247 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1248 /* use PIO8/9 for prefetch off/on */
1249 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1250 /* use PIO6/7 for fast-devsel off/on */
1251 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1252 /* use 100-102 and 200-202 PIO values to set DMA modes */
1253 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1255 * keep DMA setting when programming PIO mode, may be used only
1256 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1258 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1259 /* program host for the transfer mode after programming device */
1260 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1261 /* don't program host/device for the transfer mode ("smart" hosts) */
1262 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1263 /* trust BIOS for programming chipset/device for DMA */
1264 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1265 /* host is CS5510/CS5520 */
1266 IDE_HFLAG_CS5520
= (1 << 11),
1267 /* ATAPI DMA is unsupported */
1268 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1269 /* set if host is a "non-bootable" controller */
1270 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1271 /* host doesn't support DMA */
1272 IDE_HFLAG_NO_DMA
= (1 << 14),
1273 /* check if host is PCI IDE device before allowing DMA */
1274 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1275 /* host uses MMIO */
1276 IDE_HFLAG_MMIO
= (1 << 16),
1278 IDE_HFLAG_NO_LBA48
= (1 << 17),
1280 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1281 /* data FIFO is cleared by an error */
1282 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1283 /* serialize ports */
1284 IDE_HFLAG_SERIALIZE
= (1 << 20),
1285 /* host is DTC2278 */
1286 IDE_HFLAG_DTC2278
= (1 << 21),
1287 /* 4 devices on a single set of I/O ports */
1288 IDE_HFLAG_4DRIVES
= (1 << 22),
1289 /* host is TRM290 */
1290 IDE_HFLAG_TRM290
= (1 << 23),
1291 /* use 32-bit I/O ops */
1292 IDE_HFLAG_IO_32BIT
= (1 << 24),
1294 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1295 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1296 /* serialize ports if DMA is possible (for sl82c105) */
1297 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1298 /* force host out of "simplex" mode */
1299 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1300 /* DSC overlap is unsupported */
1301 IDE_HFLAG_NO_DSC
= (1 << 29),
1302 /* never use 32-bit I/O ops */
1303 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1304 /* never unmask IRQs */
1305 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1308 #ifdef CONFIG_BLK_DEV_OFFBOARD
1309 # define IDE_HFLAG_OFF_BOARD 0
1311 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1314 struct ide_port_info
{
1317 int (*init_chipset
)(struct pci_dev
*);
1319 void (*get_lock
)(irq_handler_t
, void *);
1320 void (*release_lock
)(void);
1322 void (*init_iops
)(ide_hwif_t
*);
1323 void (*init_hwif
)(ide_hwif_t
*);
1324 int (*init_dma
)(ide_hwif_t
*,
1325 const struct ide_port_info
*);
1327 const struct ide_tp_ops
*tp_ops
;
1328 const struct ide_port_ops
*port_ops
;
1329 const struct ide_dma_ops
*dma_ops
;
1331 struct ide_pci_enablebit enablebits
[2];
1333 hwif_chipset_t chipset
;
1335 u16 max_sectors
; /* if < than the default one */
1347 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1348 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1349 const struct ide_port_info
*, void *);
1350 void ide_pci_remove(struct pci_dev
*);
1353 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1354 int ide_pci_resume(struct pci_dev
*);
1356 #define ide_pci_suspend NULL
1357 #define ide_pci_resume NULL
1360 void ide_map_sg(ide_drive_t
*, struct ide_cmd
*);
1361 void ide_init_sg_cmd(struct ide_cmd
*, unsigned int);
1363 #define BAD_DMA_DRIVE 0
1364 #define GOOD_DMA_DRIVE 1
1366 struct drive_list_entry
{
1367 const char *id_model
;
1368 const char *id_firmware
;
1371 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1373 #ifdef CONFIG_BLK_DEV_IDEDMA
1374 int ide_dma_good_drive(ide_drive_t
*);
1375 int __ide_dma_bad_drive(ide_drive_t
*);
1376 int ide_id_dma_bug(ide_drive_t
*);
1378 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1380 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1382 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1385 void ide_dma_off_quietly(ide_drive_t
*);
1386 void ide_dma_off(ide_drive_t
*);
1387 void ide_dma_on(ide_drive_t
*);
1388 int ide_set_dma(ide_drive_t
*);
1389 void ide_check_dma_crc(ide_drive_t
*);
1390 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1392 int ide_allocate_dma_engine(ide_hwif_t
*);
1393 void ide_release_dma_engine(ide_hwif_t
*);
1395 int ide_dma_prepare(ide_drive_t
*, struct ide_cmd
*);
1396 void ide_dma_unmap_sg(ide_drive_t
*, struct ide_cmd
*);
1398 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1399 int config_drive_for_dma(ide_drive_t
*);
1400 int ide_build_dmatable(ide_drive_t
*, struct ide_cmd
*);
1401 void ide_dma_host_set(ide_drive_t
*, int);
1402 int ide_dma_setup(ide_drive_t
*, struct ide_cmd
*);
1403 extern void ide_dma_start(ide_drive_t
*);
1404 int ide_dma_end(ide_drive_t
*);
1405 int ide_dma_test_irq(ide_drive_t
*);
1406 int ide_dma_sff_timer_expiry(ide_drive_t
*);
1407 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1408 extern const struct ide_dma_ops sff_dma_ops
;
1410 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1411 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1413 void ide_dma_lost_irq(ide_drive_t
*);
1414 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1417 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1418 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1419 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1420 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1421 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1422 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1423 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1424 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1425 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1426 static inline ide_startstop_t
ide_dma_intr(ide_drive_t
*drive
) { return ide_stopped
; }
1427 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1428 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1429 static inline int ide_dma_prepare(ide_drive_t
*drive
,
1430 struct ide_cmd
*cmd
) { return 1; }
1431 static inline void ide_dma_unmap_sg(ide_drive_t
*drive
,
1432 struct ide_cmd
*cmd
) { ; }
1433 #endif /* CONFIG_BLK_DEV_IDEDMA */
1435 #ifdef CONFIG_BLK_DEV_IDEACPI
1436 int ide_acpi_init(void);
1437 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1438 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1439 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1440 void ide_acpi_init_port(ide_hwif_t
*);
1441 void ide_acpi_port_init_devices(ide_hwif_t
*);
1442 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1444 static inline int ide_acpi_init(void) { return 0; }
1445 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1446 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1447 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1448 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1449 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1450 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1453 void ide_register_region(struct gendisk
*);
1454 void ide_unregister_region(struct gendisk
*);
1456 void ide_check_nien_quirk_list(ide_drive_t
*);
1457 void ide_undecoded_slave(ide_drive_t
*);
1459 void ide_port_apply_params(ide_hwif_t
*);
1460 int ide_sysfs_register_port(ide_hwif_t
*);
1462 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, struct ide_hw
**,
1464 void ide_host_free(struct ide_host
*);
1465 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1467 int ide_host_add(const struct ide_port_info
*, struct ide_hw
**, unsigned int,
1468 struct ide_host
**);
1469 void ide_host_remove(struct ide_host
*);
1470 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1471 void ide_port_unregister_devices(ide_hwif_t
*);
1472 void ide_port_scan(ide_hwif_t
*);
1474 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1476 return hwif
->hwif_data
;
1479 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1481 hwif
->hwif_data
= data
;
1484 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1486 u64
ide_get_lba_addr(struct ide_cmd
*, int);
1487 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1492 u16 act8b
; /* t2 for 8-bit io */
1493 u16 rec8b
; /* t2i for 8-bit io */
1494 u16 cyc8b
; /* t0 for 8-bit io */
1495 u16 active
; /* t2 or tD */
1496 u16 recover
; /* t2i or tK */
1498 u16 udma
; /* t2CYCTYP/2 */
1502 IDE_TIMING_SETUP
= (1 << 0),
1503 IDE_TIMING_ACT8B
= (1 << 1),
1504 IDE_TIMING_REC8B
= (1 << 2),
1505 IDE_TIMING_CYC8B
= (1 << 3),
1506 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1508 IDE_TIMING_ACTIVE
= (1 << 4),
1509 IDE_TIMING_RECOVER
= (1 << 5),
1510 IDE_TIMING_CYCLE
= (1 << 6),
1511 IDE_TIMING_UDMA
= (1 << 7),
1512 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1513 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1514 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1517 struct ide_timing
*ide_timing_find_mode(u8
);
1518 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1519 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1520 struct ide_timing
*, unsigned int);
1521 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1523 #ifdef CONFIG_IDE_XFER_MODE
1524 int ide_scan_pio_blacklist(char *);
1525 const char *ide_xfer_verbose(u8
);
1526 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1527 int ide_set_pio_mode(ide_drive_t
*, u8
);
1528 int ide_set_dma_mode(ide_drive_t
*, u8
);
1529 void ide_set_pio(ide_drive_t
*, u8
);
1530 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1532 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1533 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1536 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1538 ide_set_pio(drive
, 255);
1541 char *ide_media_string(ide_drive_t
*);
1543 extern struct device_attribute ide_dev_attrs
[];
1544 extern struct bus_type ide_bus_type
;
1545 extern struct class *ide_port_class
;
1547 static inline void ide_dump_identify(u8
*id
)
1549 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1552 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1554 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1557 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1559 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1561 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1564 #define ide_port_for_each_dev(i, dev, port) \
1565 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1567 #define ide_port_for_each_present_dev(i, dev, port) \
1568 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1569 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1571 #define ide_host_for_each_port(i, port, host) \
1572 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)