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
181 typedef struct hw_regs_s
{
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 hwif_chipset_t chipset
;
190 struct device
*dev
, *parent
;
191 unsigned long config
;
194 static inline void ide_std_init_ports(hw_regs_t
*hw
,
195 unsigned long io_addr
,
196 unsigned long ctl_addr
)
200 for (i
= 0; i
<= 7; i
++)
201 hw
->io_ports_array
[i
] = io_addr
++;
203 hw
->io_ports
.ctl_addr
= ctl_addr
;
209 * Now for the data we need to maintain per-drive: ide_drive_t
212 #define ide_scsi 0x21
213 #define ide_disk 0x20
214 #define ide_optical 0x7
215 #define ide_cdrom 0x5
217 #define ide_floppy 0x0
220 * Special Driver Flags
222 * set_geometry : respecify drive geometry
223 * recalibrate : seek to cyl 0
224 * set_multmode : set multmode count
230 unsigned set_geometry
: 1;
231 unsigned recalibrate
: 1;
232 unsigned set_multmode
: 1;
233 unsigned reserved
: 5;
238 * Status returned from various ide_ functions
241 ide_stopped
, /* no drive operation was started */
242 ide_started
, /* a drive operation was started, handler was set */
246 IDE_VALID_ERROR
= (1 << 1),
247 IDE_VALID_FEATURE
= IDE_VALID_ERROR
,
248 IDE_VALID_NSECT
= (1 << 2),
249 IDE_VALID_LBAL
= (1 << 3),
250 IDE_VALID_LBAM
= (1 << 4),
251 IDE_VALID_LBAH
= (1 << 5),
252 IDE_VALID_DEVICE
= (1 << 6),
253 IDE_VALID_LBA
= IDE_VALID_LBAL
|
256 IDE_VALID_OUT_TF
= IDE_VALID_FEATURE
|
259 IDE_VALID_IN_TF
= IDE_VALID_NSECT
|
261 IDE_VALID_OUT_HOB
= IDE_VALID_OUT_TF
,
262 IDE_VALID_IN_HOB
= IDE_VALID_ERROR
|
268 IDE_TFLAG_LBA48
= (1 << 0),
269 IDE_TFLAG_WRITE
= (1 << 1),
270 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 2),
271 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 3),
272 /* force 16-bit I/O operations */
273 IDE_TFLAG_IO_16BIT
= (1 << 4),
274 /* struct ide_cmd was allocated using kmalloc() */
275 IDE_TFLAG_DYN
= (1 << 5),
276 IDE_TFLAG_FS
= (1 << 6),
277 IDE_TFLAG_MULTI_PIO
= (1 << 7),
281 IDE_FTFLAG_FLAGGED
= (1 << 0),
282 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
283 IDE_FTFLAG_OUT_DATA
= (1 << 2),
284 IDE_FTFLAG_IN_DATA
= (1 << 3),
287 struct ide_taskfile
{
288 u8 data
; /* 0: data byte (for TASKFILE ioctl) */
290 u8 error
; /* read: error */
291 u8 feature
; /* write: feature */
293 u8 nsect
; /* 2: number of sectors */
294 u8 lbal
; /* 3: LBA low */
295 u8 lbam
; /* 4: LBA mid */
296 u8 lbah
; /* 5: LBA high */
297 u8 device
; /* 6: device select */
299 u8 status
; /* read: status */
300 u8 command
; /* write: command */
305 struct ide_taskfile tf
;
306 struct ide_taskfile hob
;
315 u8 ftf_flags
; /* for TASKFILE ioctl */
318 int sg_nents
; /* number of sg entries */
320 int sg_dma_direction
; /* DMA transfer direction */
324 unsigned int last_xfer_len
;
326 struct scatterlist
*cursg
;
327 unsigned int cursg_ofs
;
329 struct request
*rq
; /* copy of request */
332 /* ATAPI packet command flags */
334 /* set when an error is considered normal - no retry (ide-tape) */
335 PC_FLAG_ABORT
= (1 << 0),
336 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
337 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
338 PC_FLAG_DMA_OK
= (1 << 3),
339 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
340 PC_FLAG_DMA_ERROR
= (1 << 5),
341 PC_FLAG_WRITING
= (1 << 6),
345 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
346 * This is used for several packet commands (not for READ/WRITE commands).
348 #define IDE_PC_BUFFER_SIZE 64
349 #define ATAPI_WAIT_PC (60 * HZ)
351 struct ide_atapi_pc
{
352 /* actual packet bytes */
354 /* incremented on each retry */
358 /* bytes to transfer */
360 /* bytes actually transferred */
367 /* the corresponding request */
373 * those are more or less driver-specific and some of them are subject
374 * to change/removal later.
376 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
378 unsigned long timeout
;
384 #ifdef CONFIG_BLK_DEV_IDEACPI
385 struct ide_acpi_drive_link
;
386 struct ide_acpi_hwif_link
;
391 struct ide_disk_ops
{
392 int (*check
)(struct ide_drive_s
*, const char *);
393 int (*get_capacity
)(struct ide_drive_s
*);
394 void (*setup
)(struct ide_drive_s
*);
395 void (*flush
)(struct ide_drive_s
*);
396 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
397 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
399 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
401 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
402 fmode_t
, unsigned int, unsigned long);
405 /* ATAPI device flags */
407 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
410 /* Drive cannot eject the disc. */
411 IDE_AFLAG_NO_EJECT
= (1 << 1),
412 /* Drive is a pre ATAPI 1.2 drive. */
413 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
414 /* TOC addresses are in BCD. */
415 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
416 /* TOC track numbers are in BCD. */
417 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
418 /* Saved TOC information is current. */
419 IDE_AFLAG_TOC_VALID
= (1 << 6),
420 /* We think that the drive door is locked. */
421 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
422 /* SET_CD_SPEED command is unsupported. */
423 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
424 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
425 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
426 IDE_AFLAG_SANYO_3CD
= (1 << 11),
427 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
428 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
429 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
432 /* Avoid commands not supported in Clik drive */
433 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
434 /* Requires BH algorithm for packets */
435 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
436 /* Supports format progress report */
437 IDE_AFLAG_SRFP
= (1 << 17),
440 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
441 /* 0 When the tape position is unknown */
442 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
443 /* Device already opened */
444 IDE_AFLAG_BUSY
= (1 << 20),
445 /* Attempt to auto-detect the current user block size */
446 IDE_AFLAG_DETECT_BS
= (1 << 21),
447 /* Currently on a filemark */
448 IDE_AFLAG_FILEMARK
= (1 << 22),
449 /* 0 = no tape is loaded, so we don't rewind after ejecting */
450 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
452 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
457 /* restore settings after device reset */
458 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
459 /* device is using DMA for read/write */
460 IDE_DFLAG_USING_DMA
= (1 << 1),
461 /* okay to unmask other IRQs */
462 IDE_DFLAG_UNMASK
= (1 << 2),
463 /* don't attempt flushes */
464 IDE_DFLAG_NOFLUSH
= (1 << 3),
466 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
467 /* give potential excess bandwidth */
468 IDE_DFLAG_NICE1
= (1 << 5),
469 /* device is physically present */
470 IDE_DFLAG_PRESENT
= (1 << 6),
471 /* id read from device (synthetic if not set) */
472 IDE_DFLAG_ID_READ
= (1 << 8),
473 IDE_DFLAG_NOPROBE
= (1 << 9),
474 /* need to do check_media_change() */
475 IDE_DFLAG_REMOVABLE
= (1 << 10),
476 /* needed for removable devices */
477 IDE_DFLAG_ATTACH
= (1 << 11),
478 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
479 /* disallow setting unmask bit */
480 IDE_DFLAG_NO_UNMASK
= (1 << 13),
481 /* disallow enabling 32-bit I/O */
482 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
483 /* for removable only: door lock/unlock works */
484 IDE_DFLAG_DOORLOCKING
= (1 << 15),
486 IDE_DFLAG_NODMA
= (1 << 16),
487 /* powermanagment told us not to do anything, so sleep nicely */
488 IDE_DFLAG_BLOCKED
= (1 << 17),
489 /* sleeping & sleep field valid */
490 IDE_DFLAG_SLEEPING
= (1 << 18),
491 IDE_DFLAG_POST_RESET
= (1 << 19),
492 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
493 IDE_DFLAG_LBA48
= (1 << 21),
494 /* status of write cache */
495 IDE_DFLAG_WCACHE
= (1 << 22),
496 /* used for ignoring ATA_DF */
497 IDE_DFLAG_NOWERR
= (1 << 23),
498 /* retrying in PIO */
499 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
500 IDE_DFLAG_LBA
= (1 << 25),
501 /* don't unload heads */
502 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
503 /* heads unloaded, please don't reset port */
504 IDE_DFLAG_PARKED
= (1 << 27),
505 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
507 IDE_DFLAG_WP
= (1 << 29),
508 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
512 char name
[4]; /* drive name, such as "hda" */
513 char driver_req
[10]; /* requests specific driver */
515 struct request_queue
*queue
; /* request queue */
517 struct request
*rq
; /* current request */
518 void *driver_data
; /* extra driver data */
519 u16
*id
; /* identification info */
520 #ifdef CONFIG_IDE_PROC_FS
521 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
522 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
524 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
526 const struct ide_disk_ops
*disk_ops
;
528 unsigned long dev_flags
;
530 unsigned long sleep
; /* sleep until this time */
531 unsigned long timeout
; /* max time to wait for irq */
533 special_t special
; /* special action flags */
535 u8 select
; /* basic drive/head select reg value */
536 u8 retry_pio
; /* retrying dma capable host in pio */
537 u8 waiting_for_dma
; /* dma currently in progress */
538 u8 dma
; /* atapi dma flag */
540 u8 quirk_list
; /* considered quirky, set for a specific host */
541 u8 init_speed
; /* transfer rate set at boot */
542 u8 current_speed
; /* current transfer rate set */
543 u8 desired_speed
; /* desired transfer rate set */
544 u8 dn
; /* now wide spread use */
545 u8 acoustic
; /* acoustic management */
546 u8 media
; /* disk, cdrom, tape, floppy, ... */
547 u8 ready_stat
; /* min status value for drive ready */
548 u8 mult_count
; /* current multiple sector setting */
549 u8 mult_req
; /* requested multiple sector setting */
550 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
551 u8 bad_wstat
; /* used for ignoring ATA_DF */
552 u8 head
; /* "real" number of heads */
553 u8 sect
; /* "real" sectors per track */
554 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
555 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
557 /* delay this long before sending packet command */
560 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
561 unsigned int cyl
; /* "real" number of cyls */
562 unsigned int drive_data
; /* used by set_pio_mode/dev_select() */
563 unsigned int failures
; /* current failure count */
564 unsigned int max_failures
; /* maximum allowed failure count */
565 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
567 u64 capacity64
; /* total number of sectors */
569 int lun
; /* logical unit */
570 int crc_count
; /* crc counter to reduce drive speed */
572 unsigned long debug_mask
; /* debugging levels switch */
574 #ifdef CONFIG_BLK_DEV_IDEACPI
575 struct ide_acpi_drive_link
*acpidata
;
577 struct list_head list
;
578 struct device gendev
;
579 struct completion gendev_rel_comp
; /* to deal with device release() */
581 /* current packet command */
582 struct ide_atapi_pc
*pc
;
584 /* last failed packet command */
585 struct ide_atapi_pc
*failed_pc
;
587 /* callback for packet commands */
588 int (*pc_callback
)(struct ide_drive_s
*, int);
590 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
592 unsigned long atapi_flags
;
594 struct ide_atapi_pc request_sense_pc
;
596 /* current sense rq and buffer */
598 struct request sense_rq
;
599 struct request_sense sense_data
;
602 typedef struct ide_drive_s ide_drive_t
;
604 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
606 #define to_ide_drv(obj, cont_type) \
607 container_of(obj, struct cont_type, dev)
609 #define ide_drv_g(disk, cont_type) \
610 container_of((disk)->private_data, struct cont_type, driver)
612 struct ide_port_info
;
615 void (*exec_command
)(struct hwif_s
*, u8
);
616 u8 (*read_status
)(struct hwif_s
*);
617 u8 (*read_altstatus
)(struct hwif_s
*);
618 void (*write_devctl
)(struct hwif_s
*, u8
);
620 void (*dev_select
)(ide_drive_t
*);
621 void (*tf_load
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
622 void (*tf_read
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
624 void (*input_data
)(ide_drive_t
*, struct ide_cmd
*,
625 void *, unsigned int);
626 void (*output_data
)(ide_drive_t
*, struct ide_cmd
*,
627 void *, unsigned int);
630 extern const struct ide_tp_ops default_tp_ops
;
633 * struct ide_port_ops - IDE port operations
635 * @init_dev: host specific initialization of a device
636 * @set_pio_mode: routine to program host for PIO mode
637 * @set_dma_mode: routine to program host for DMA mode
638 * @reset_poll: chipset polling based on hba specifics
639 * @pre_reset: chipset specific changes to default for device-hba resets
640 * @resetproc: routine to reset controller after a disk reset
641 * @maskproc: special host masking for drive selection
642 * @quirkproc: check host's drive quirk list
643 * @clear_irq: clear IRQ
645 * @mdma_filter: filter MDMA modes
646 * @udma_filter: filter UDMA modes
648 * @cable_detect: detect cable type
650 struct ide_port_ops
{
651 void (*init_dev
)(ide_drive_t
*);
652 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
653 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
654 int (*reset_poll
)(ide_drive_t
*);
655 void (*pre_reset
)(ide_drive_t
*);
656 void (*resetproc
)(ide_drive_t
*);
657 void (*maskproc
)(ide_drive_t
*, int);
658 void (*quirkproc
)(ide_drive_t
*);
659 void (*clear_irq
)(ide_drive_t
*);
661 u8 (*mdma_filter
)(ide_drive_t
*);
662 u8 (*udma_filter
)(ide_drive_t
*);
664 u8 (*cable_detect
)(struct hwif_s
*);
668 void (*dma_host_set
)(struct ide_drive_s
*, int);
669 int (*dma_setup
)(struct ide_drive_s
*, struct ide_cmd
*);
670 void (*dma_start
)(struct ide_drive_s
*);
671 int (*dma_end
)(struct ide_drive_s
*);
672 int (*dma_test_irq
)(struct ide_drive_s
*);
673 void (*dma_lost_irq
)(struct ide_drive_s
*);
674 /* below ones are optional */
675 int (*dma_check
)(struct ide_drive_s
*, struct ide_cmd
*);
676 int (*dma_timer_expiry
)(struct ide_drive_s
*);
677 void (*dma_clear
)(struct ide_drive_s
*);
679 * The following method is optional and only required to be
680 * implemented for the SFF-8038i compatible controllers.
682 u8 (*dma_sff_read_status
)(struct hwif_s
*);
687 typedef struct hwif_s
{
688 struct hwif_s
*mate
; /* other hwif from same PCI chip */
689 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
691 struct ide_host
*host
;
693 char name
[6]; /* name of interface, eg. "ide0" */
695 struct ide_io_ports io_ports
;
697 unsigned long sata_scr
[SATA_NR_PORTS
];
699 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
701 u8 major
; /* our major number */
702 u8 index
; /* 0 for ide0; 1 for ide1; ... */
703 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
713 u8 cbl
; /* cable type */
715 hwif_chipset_t chipset
; /* sub-module for tuning.. */
719 ide_ack_intr_t
*ack_intr
;
721 void (*rw_disk
)(ide_drive_t
*, struct request
*);
723 const struct ide_tp_ops
*tp_ops
;
724 const struct ide_port_ops
*port_ops
;
725 const struct ide_dma_ops
*dma_ops
;
727 /* dma physical region descriptor table (cpu view) */
728 unsigned int *dmatable_cpu
;
729 /* dma physical region descriptor table (dma view) */
730 dma_addr_t dmatable_dma
;
732 /* maximum number of PRD table entries */
734 /* PRD entry size in bytes */
737 /* Scatter-gather list used to build the above */
738 struct scatterlist
*sg_table
;
739 int sg_max_nents
; /* Maximum number of entries in it */
741 struct ide_cmd cmd
; /* current command */
743 int rqsize
; /* max sectors per request */
744 int irq
; /* our irq number */
746 unsigned long dma_base
; /* base addr for dma ports */
748 unsigned long config_data
; /* for use by chipset-specific code */
749 unsigned long select_data
; /* for use by chipset-specific code */
751 unsigned long extra_base
; /* extra addr for dma ports */
752 unsigned extra_ports
; /* number of extra dma ports */
754 unsigned present
: 1; /* this interface exists */
755 unsigned busy
: 1; /* serializes devices on a port */
757 struct device gendev
;
758 struct device
*portdev
;
760 struct completion gendev_rel_comp
; /* To deal with device release() */
762 void *hwif_data
; /* extra hwif data */
764 #ifdef CONFIG_BLK_DEV_IDEACPI
765 struct ide_acpi_hwif_link
*acpidata
;
768 /* IRQ handler, if active */
769 ide_startstop_t (*handler
)(ide_drive_t
*);
771 /* BOOL: polling active & poll_timeout field valid */
772 unsigned int polling
: 1;
775 ide_drive_t
*cur_dev
;
777 /* current request */
781 struct timer_list timer
;
782 /* timeout value during long polls */
783 unsigned long poll_timeout
;
784 /* queried upon timeouts */
785 int (*expiry
)(ide_drive_t
*);
791 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
793 #define MAX_HOST_PORTS 4
796 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
797 unsigned int n_ports
;
798 struct device
*dev
[2];
800 int (*init_chipset
)(struct pci_dev
*);
802 void (*get_lock
)(irq_handler_t
, void *);
803 void (*release_lock
)(void);
805 irq_handler_t irq_handler
;
807 unsigned long host_flags
;
812 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
814 /* used for hosts requiring serialization */
815 volatile unsigned long host_busy
;
818 #define IDE_HOST_BUSY 0
821 * internal ide interrupt handler type
823 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
824 typedef int (ide_expiry_t
)(ide_drive_t
*);
826 /* used by ide-cd, ide-floppy, etc. */
827 typedef void (xfer_func_t
)(ide_drive_t
*, struct ide_cmd
*, void *, unsigned);
829 extern struct mutex ide_setting_mtx
;
832 * configurable drive settings
835 #define DS_SYNC (1 << 0)
838 int (*get
)(ide_drive_t
*);
839 int (*set
)(ide_drive_t
*, int);
843 #define __DEVSET(_flags, _get, _set) { \
849 #define ide_devset_get(name, field) \
850 static int get_##name(ide_drive_t *drive) \
852 return drive->field; \
855 #define ide_devset_set(name, field) \
856 static int set_##name(ide_drive_t *drive, int arg) \
858 drive->field = arg; \
862 #define ide_devset_get_flag(name, flag) \
863 static int get_##name(ide_drive_t *drive) \
865 return !!(drive->dev_flags & flag); \
868 #define ide_devset_set_flag(name, flag) \
869 static int set_##name(ide_drive_t *drive, int arg) \
872 drive->dev_flags |= flag; \
874 drive->dev_flags &= ~flag; \
878 #define __IDE_DEVSET(_name, _flags, _get, _set) \
879 const struct ide_devset ide_devset_##_name = \
880 __DEVSET(_flags, _get, _set)
882 #define IDE_DEVSET(_name, _flags, _get, _set) \
883 static __IDE_DEVSET(_name, _flags, _get, _set)
885 #define ide_devset_rw(_name, _func) \
886 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
888 #define ide_devset_w(_name, _func) \
889 IDE_DEVSET(_name, 0, NULL, set_##_func)
891 #define ide_ext_devset_rw(_name, _func) \
892 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
894 #define ide_ext_devset_rw_sync(_name, _func) \
895 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
897 #define ide_decl_devset(_name) \
898 extern const struct ide_devset ide_devset_##_name
900 ide_decl_devset(io_32bit
);
901 ide_decl_devset(keepsettings
);
902 ide_decl_devset(pio_mode
);
903 ide_decl_devset(unmaskirq
);
904 ide_decl_devset(using_dma
);
906 #ifdef CONFIG_IDE_PROC_FS
908 * /proc/ide interface
911 #define ide_devset_rw_field(_name, _field) \
912 ide_devset_get(_name, _field); \
913 ide_devset_set(_name, _field); \
914 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
916 #define ide_devset_rw_flag(_name, _field) \
917 ide_devset_get_flag(_name, _field); \
918 ide_devset_set_flag(_name, _field); \
919 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
921 struct ide_proc_devset
{
923 const struct ide_devset
*setting
;
925 int (*mulf
)(ide_drive_t
*);
926 int (*divf
)(ide_drive_t
*);
929 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
930 .name = __stringify(_name), \
931 .setting = &ide_devset_##_name, \
938 #define IDE_PROC_DEVSET(_name, _min, _max) \
939 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
944 read_proc_t
*read_proc
;
945 write_proc_t
*write_proc
;
948 void proc_ide_create(void);
949 void proc_ide_destroy(void);
950 void ide_proc_register_port(ide_hwif_t
*);
951 void ide_proc_port_register_devices(ide_hwif_t
*);
952 void ide_proc_unregister_device(ide_drive_t
*);
953 void ide_proc_unregister_port(ide_hwif_t
*);
954 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
955 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
957 read_proc_t proc_ide_read_capacity
;
958 read_proc_t proc_ide_read_geometry
;
961 * Standard exit stuff:
963 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
972 *start = page + off; \
976 static inline void proc_ide_create(void) { ; }
977 static inline void proc_ide_destroy(void) { ; }
978 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
979 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
980 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
981 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
982 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
983 struct ide_driver
*driver
) { ; }
984 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
985 struct ide_driver
*driver
) { ; }
986 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
990 /* enter/exit functions */
991 IDE_DBG_FUNC
= (1 << 0),
992 /* sense key/asc handling */
993 IDE_DBG_SENSE
= (1 << 1),
994 /* packet commands handling */
995 IDE_DBG_PC
= (1 << 2),
996 /* request handling */
997 IDE_DBG_RQ
= (1 << 3),
998 /* driver probing/setup */
999 IDE_DBG_PROBE
= (1 << 4),
1002 /* DRV_NAME has to be defined in the driver before using the macro below */
1003 #define __ide_debug_log(lvl, fmt, args...) \
1005 if (unlikely(drive->debug_mask & lvl)) \
1006 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1007 __func__, ## args); \
1011 * Power Management state machine (rq->pm->pm_step).
1013 * For each step, the core calls ide_start_power_step() first.
1015 * - ide_stopped : In this case, the core calls us back again unless
1016 * step have been set to ide_power_state_completed.
1017 * - ide_started : In this case, the channel is left busy until an
1018 * async event (interrupt) occurs.
1019 * Typically, ide_start_power_step() will issue a taskfile request with
1022 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1023 * with the error code if any. This routine should update the step value
1024 * and return. It should not start a new request. The core will call
1025 * ide_start_power_step() for the new step value, unless step have been
1026 * set to IDE_PM_COMPLETED.
1029 IDE_PM_START_SUSPEND
,
1030 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1033 IDE_PM_START_RESUME
,
1034 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1041 int generic_ide_suspend(struct device
*, pm_message_t
);
1042 int generic_ide_resume(struct device
*);
1044 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1045 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1046 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1047 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1050 * Subdrivers support.
1052 * The gendriver.owner field should be set to the module owner of this driver.
1053 * The gendriver.name field should be set to the name of this driver
1056 const char *version
;
1057 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1058 struct device_driver gen_driver
;
1059 int (*probe
)(ide_drive_t
*);
1060 void (*remove
)(ide_drive_t
*);
1061 void (*resume
)(ide_drive_t
*);
1062 void (*shutdown
)(ide_drive_t
*);
1063 #ifdef CONFIG_IDE_PROC_FS
1064 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1065 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1069 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1071 int ide_device_get(ide_drive_t
*);
1072 void ide_device_put(ide_drive_t
*);
1074 struct ide_ioctl_devset
{
1075 unsigned int get_ioctl
;
1076 unsigned int set_ioctl
;
1077 const struct ide_devset
*setting
;
1080 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1081 unsigned long, const struct ide_ioctl_devset
*);
1083 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1085 extern int ide_vlb_clk
;
1086 extern int ide_pci_clk
;
1088 unsigned int ide_rq_bytes(struct request
*);
1089 int ide_end_rq(ide_drive_t
*, struct request
*, int, unsigned int);
1090 void ide_kill_rq(ide_drive_t
*, struct request
*);
1092 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1093 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1095 void ide_execute_command(ide_drive_t
*, struct ide_cmd
*, ide_handler_t
*,
1098 void ide_pad_transfer(ide_drive_t
*, int, int);
1100 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1102 void ide_fix_driveid(u16
*);
1104 extern void ide_fixstring(u8
*, const int, const int);
1106 int ide_busy_sleep(ide_drive_t
*, unsigned long, int);
1108 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1110 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1111 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1113 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1115 extern int ide_devset_execute(ide_drive_t
*drive
,
1116 const struct ide_devset
*setting
, int arg
);
1118 void ide_complete_cmd(ide_drive_t
*, struct ide_cmd
*, u8
, u8
);
1119 int ide_complete_rq(ide_drive_t
*, int, unsigned int);
1121 void ide_tf_readback(ide_drive_t
*drive
, struct ide_cmd
*cmd
);
1122 void ide_tf_dump(const char *, struct ide_cmd
*);
1124 void ide_exec_command(ide_hwif_t
*, u8
);
1125 u8
ide_read_status(ide_hwif_t
*);
1126 u8
ide_read_altstatus(ide_hwif_t
*);
1127 void ide_write_devctl(ide_hwif_t
*, u8
);
1129 void ide_dev_select(ide_drive_t
*);
1130 void ide_tf_load(ide_drive_t
*, struct ide_taskfile
*, u8
);
1131 void ide_tf_read(ide_drive_t
*, struct ide_taskfile
*, u8
);
1133 void ide_input_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1134 void ide_output_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1136 void SELECT_MASK(ide_drive_t
*, int);
1138 u8
ide_read_error(ide_drive_t
*);
1139 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1141 int ide_check_atapi_device(ide_drive_t
*, const char *);
1143 void ide_init_pc(struct ide_atapi_pc
*);
1145 /* Disk head parking */
1146 extern wait_queue_head_t ide_park_wq
;
1147 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1149 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1150 const char *buf
, size_t len
);
1153 * Special requests for ide-tape block device strategy routine.
1155 * In order to service a character device command, we add special requests to
1156 * the tail of our block device request queue and wait for their completion.
1159 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1160 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1161 REQ_IDETAPE_READ
= (1 << 2),
1162 REQ_IDETAPE_WRITE
= (1 << 3),
1165 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1167 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1168 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1169 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1170 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1171 void ide_retry_pc(ide_drive_t
*drive
);
1173 void ide_prep_sense(ide_drive_t
*drive
, struct request
*rq
);
1174 int ide_queue_sense_rq(ide_drive_t
*drive
, void *special
);
1176 int ide_cd_expiry(ide_drive_t
*);
1178 int ide_cd_get_xferlen(struct request
*);
1180 ide_startstop_t
ide_issue_pc(ide_drive_t
*, struct ide_cmd
*);
1182 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, struct ide_cmd
*);
1184 void ide_pio_bytes(ide_drive_t
*, struct ide_cmd
*, unsigned int, unsigned int);
1186 void ide_finish_cmd(ide_drive_t
*, struct ide_cmd
*, u8
);
1188 int ide_raw_taskfile(ide_drive_t
*, struct ide_cmd
*, u8
*, u16
);
1189 int ide_no_data_taskfile(ide_drive_t
*, struct ide_cmd
*);
1191 int ide_taskfile_ioctl(ide_drive_t
*, unsigned long);
1193 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*);
1195 extern int ide_driveid_update(ide_drive_t
*);
1196 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1197 extern u8
eighty_ninty_three (ide_drive_t
*);
1198 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1200 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1202 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1204 extern void ide_timer_expiry(unsigned long);
1205 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1206 extern void do_ide_request(struct request_queue
*);
1208 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1210 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1211 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1212 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1214 #define ide_pci_register_driver(d) pci_register_driver(d)
1217 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1219 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1224 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1225 hw_regs_t
*, hw_regs_t
**);
1226 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1228 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1229 int ide_pci_set_master(struct pci_dev
*, const char *);
1230 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1231 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1232 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1234 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1235 const struct ide_port_info
*d
)
1241 struct ide_pci_enablebit
{
1242 u8 reg
; /* byte pci reg holding the enable-bit */
1243 u8 mask
; /* mask to isolate the enable-bit */
1244 u8 val
; /* value of masked reg when "enabled" */
1248 /* Uses ISA control ports not PCI ones. */
1249 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1250 /* single port device */
1251 IDE_HFLAG_SINGLE
= (1 << 1),
1252 /* don't use legacy PIO blacklist */
1253 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1254 /* set for the second port of QD65xx */
1255 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1256 /* use PIO8/9 for prefetch off/on */
1257 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1258 /* use PIO6/7 for fast-devsel off/on */
1259 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1260 /* use 100-102 and 200-202 PIO values to set DMA modes */
1261 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1263 * keep DMA setting when programming PIO mode, may be used only
1264 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1266 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1267 /* program host for the transfer mode after programming device */
1268 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1269 /* don't program host/device for the transfer mode ("smart" hosts) */
1270 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1271 /* trust BIOS for programming chipset/device for DMA */
1272 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1273 /* host is CS5510/CS5520 */
1274 IDE_HFLAG_CS5520
= (1 << 11),
1275 /* ATAPI DMA is unsupported */
1276 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1277 /* set if host is a "non-bootable" controller */
1278 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1279 /* host doesn't support DMA */
1280 IDE_HFLAG_NO_DMA
= (1 << 14),
1281 /* check if host is PCI IDE device before allowing DMA */
1282 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1283 /* host uses MMIO */
1284 IDE_HFLAG_MMIO
= (1 << 16),
1286 IDE_HFLAG_NO_LBA48
= (1 << 17),
1288 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1289 /* data FIFO is cleared by an error */
1290 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1291 /* serialize ports */
1292 IDE_HFLAG_SERIALIZE
= (1 << 20),
1293 /* host is DTC2278 */
1294 IDE_HFLAG_DTC2278
= (1 << 21),
1295 /* 4 devices on a single set of I/O ports */
1296 IDE_HFLAG_4DRIVES
= (1 << 22),
1297 /* host is TRM290 */
1298 IDE_HFLAG_TRM290
= (1 << 23),
1299 /* use 32-bit I/O ops */
1300 IDE_HFLAG_IO_32BIT
= (1 << 24),
1302 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1303 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1304 /* serialize ports if DMA is possible (for sl82c105) */
1305 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1306 /* force host out of "simplex" mode */
1307 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1308 /* DSC overlap is unsupported */
1309 IDE_HFLAG_NO_DSC
= (1 << 29),
1310 /* never use 32-bit I/O ops */
1311 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1312 /* never unmask IRQs */
1313 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1316 #ifdef CONFIG_BLK_DEV_OFFBOARD
1317 # define IDE_HFLAG_OFF_BOARD 0
1319 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1322 struct ide_port_info
{
1325 int (*init_chipset
)(struct pci_dev
*);
1327 void (*get_lock
)(irq_handler_t
, void *);
1328 void (*release_lock
)(void);
1330 void (*init_iops
)(ide_hwif_t
*);
1331 void (*init_hwif
)(ide_hwif_t
*);
1332 int (*init_dma
)(ide_hwif_t
*,
1333 const struct ide_port_info
*);
1335 const struct ide_tp_ops
*tp_ops
;
1336 const struct ide_port_ops
*port_ops
;
1337 const struct ide_dma_ops
*dma_ops
;
1339 struct ide_pci_enablebit enablebits
[2];
1341 hwif_chipset_t chipset
;
1343 u16 max_sectors
; /* if < than the default one */
1355 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1356 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1357 const struct ide_port_info
*, void *);
1358 void ide_pci_remove(struct pci_dev
*);
1361 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1362 int ide_pci_resume(struct pci_dev
*);
1364 #define ide_pci_suspend NULL
1365 #define ide_pci_resume NULL
1368 void ide_map_sg(ide_drive_t
*, struct ide_cmd
*);
1369 void ide_init_sg_cmd(struct ide_cmd
*, unsigned int);
1371 #define BAD_DMA_DRIVE 0
1372 #define GOOD_DMA_DRIVE 1
1374 struct drive_list_entry
{
1375 const char *id_model
;
1376 const char *id_firmware
;
1379 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1381 #ifdef CONFIG_BLK_DEV_IDEDMA
1382 int ide_dma_good_drive(ide_drive_t
*);
1383 int __ide_dma_bad_drive(ide_drive_t
*);
1384 int ide_id_dma_bug(ide_drive_t
*);
1386 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1388 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1390 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1393 void ide_dma_off_quietly(ide_drive_t
*);
1394 void ide_dma_off(ide_drive_t
*);
1395 void ide_dma_on(ide_drive_t
*);
1396 int ide_set_dma(ide_drive_t
*);
1397 void ide_check_dma_crc(ide_drive_t
*);
1398 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1400 int ide_allocate_dma_engine(ide_hwif_t
*);
1401 void ide_release_dma_engine(ide_hwif_t
*);
1403 int ide_dma_prepare(ide_drive_t
*, struct ide_cmd
*);
1404 void ide_dma_unmap_sg(ide_drive_t
*, struct ide_cmd
*);
1406 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1407 int config_drive_for_dma(ide_drive_t
*);
1408 int ide_build_dmatable(ide_drive_t
*, struct ide_cmd
*);
1409 void ide_dma_host_set(ide_drive_t
*, int);
1410 int ide_dma_setup(ide_drive_t
*, struct ide_cmd
*);
1411 extern void ide_dma_start(ide_drive_t
*);
1412 int ide_dma_end(ide_drive_t
*);
1413 int ide_dma_test_irq(ide_drive_t
*);
1414 int ide_dma_sff_timer_expiry(ide_drive_t
*);
1415 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1416 extern const struct ide_dma_ops sff_dma_ops
;
1418 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1419 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1421 void ide_dma_lost_irq(ide_drive_t
*);
1422 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1425 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1426 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1427 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1428 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1429 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1430 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1431 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1432 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1433 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1434 static inline ide_startstop_t
ide_dma_intr(ide_drive_t
*drive
) { return ide_stopped
; }
1435 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1436 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1437 static inline int ide_dma_prepare(ide_drive_t
*drive
,
1438 struct ide_cmd
*cmd
) { return 1; }
1439 static inline void ide_dma_unmap_sg(ide_drive_t
*drive
,
1440 struct ide_cmd
*cmd
) { ; }
1441 #endif /* CONFIG_BLK_DEV_IDEDMA */
1443 #ifdef CONFIG_BLK_DEV_IDEACPI
1444 int ide_acpi_init(void);
1445 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1446 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1447 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1448 void ide_acpi_init_port(ide_hwif_t
*);
1449 void ide_acpi_port_init_devices(ide_hwif_t
*);
1450 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1452 static inline int ide_acpi_init(void) { return 0; }
1453 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1454 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1455 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1456 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1457 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1458 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1461 void ide_register_region(struct gendisk
*);
1462 void ide_unregister_region(struct gendisk
*);
1464 void ide_undecoded_slave(ide_drive_t
*);
1466 void ide_port_apply_params(ide_hwif_t
*);
1467 int ide_sysfs_register_port(ide_hwif_t
*);
1469 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1470 void ide_host_free(struct ide_host
*);
1471 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1473 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1474 struct ide_host
**);
1475 void ide_host_remove(struct ide_host
*);
1476 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1477 void ide_port_unregister_devices(ide_hwif_t
*);
1478 void ide_port_scan(ide_hwif_t
*);
1480 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1482 return hwif
->hwif_data
;
1485 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1487 hwif
->hwif_data
= data
;
1490 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1492 u64
ide_get_lba_addr(struct ide_cmd
*, int);
1493 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1498 u16 act8b
; /* t2 for 8-bit io */
1499 u16 rec8b
; /* t2i for 8-bit io */
1500 u16 cyc8b
; /* t0 for 8-bit io */
1501 u16 active
; /* t2 or tD */
1502 u16 recover
; /* t2i or tK */
1504 u16 udma
; /* t2CYCTYP/2 */
1508 IDE_TIMING_SETUP
= (1 << 0),
1509 IDE_TIMING_ACT8B
= (1 << 1),
1510 IDE_TIMING_REC8B
= (1 << 2),
1511 IDE_TIMING_CYC8B
= (1 << 3),
1512 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1514 IDE_TIMING_ACTIVE
= (1 << 4),
1515 IDE_TIMING_RECOVER
= (1 << 5),
1516 IDE_TIMING_CYCLE
= (1 << 6),
1517 IDE_TIMING_UDMA
= (1 << 7),
1518 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1519 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1520 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1523 struct ide_timing
*ide_timing_find_mode(u8
);
1524 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1525 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1526 struct ide_timing
*, unsigned int);
1527 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1529 #ifdef CONFIG_IDE_XFER_MODE
1530 int ide_scan_pio_blacklist(char *);
1531 const char *ide_xfer_verbose(u8
);
1532 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1533 int ide_set_pio_mode(ide_drive_t
*, u8
);
1534 int ide_set_dma_mode(ide_drive_t
*, u8
);
1535 void ide_set_pio(ide_drive_t
*, u8
);
1536 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1538 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1539 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1542 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1544 ide_set_pio(drive
, 255);
1547 char *ide_media_string(ide_drive_t
*);
1549 extern struct device_attribute ide_dev_attrs
[];
1550 extern struct bus_type ide_bus_type
;
1551 extern struct class *ide_port_class
;
1553 static inline void ide_dump_identify(u8
*id
)
1555 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1558 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1560 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1563 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1565 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1567 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1570 #define ide_port_for_each_dev(i, dev, port) \
1571 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1573 #define ide_port_for_each_present_dev(i, dev, port) \
1574 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1575 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1577 #define ide_host_for_each_port(i, port, host) \
1578 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)