4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
27 #include <asm/mutex.h>
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Probably not wise to fiddle with these
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
44 * Definitions for accessing IDE controller registers
46 #define IDE_NR_PORTS (10)
49 unsigned long data_addr
;
52 unsigned long error_addr
; /* read: error */
53 unsigned long feature_addr
; /* write: feature */
56 unsigned long nsect_addr
;
57 unsigned long lbal_addr
;
58 unsigned long lbam_addr
;
59 unsigned long lbah_addr
;
61 unsigned long device_addr
;
64 unsigned long status_addr
; /* read: status */
65 unsigned long command_addr
; /* write: command */
68 unsigned long ctl_addr
;
70 unsigned long irq_addr
;
73 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
75 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
76 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
77 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
78 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
80 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
82 #define SATA_NR_PORTS (3) /* 16 possible ?? */
84 #define SATA_STATUS_OFFSET (0)
85 #define SATA_ERROR_OFFSET (1)
86 #define SATA_CONTROL_OFFSET (2)
89 * Our Physical Region Descriptor (PRD) table should be large enough
90 * to handle the biggest I/O request we are likely to see. Since requests
91 * can have no more than 256 sectors, and since the typical blocksize is
92 * two or more sectors, we could get by with a limit of 128 entries here for
93 * the usual worst case. Most requests seem to include some contiguous blocks,
94 * further reducing the number of table entries required.
96 * The driver reverts to PIO mode for individual requests that exceed
97 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
98 * 100% of all crazy scenarios here is not necessary.
100 * As it turns out though, we must allocate a full 4KB page for this,
101 * so the two PRD tables (ide0 & ide1) will each get half of that,
102 * allowing each to have about 256 entries (8 bytes each) from this.
105 #define PRD_ENTRIES 256
108 * Some more useful definitions
110 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
111 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
112 #define SECTOR_SIZE 512
115 * Timeouts for various operations:
118 /* spec allows up to 20ms */
119 WAIT_DRQ
= HZ
/ 10, /* 100ms */
120 /* some laptops are very slow */
121 WAIT_READY
= 5 * HZ
, /* 5s */
122 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
123 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
124 /* worst case when spinning up */
125 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
126 /* maximum wait for an IRQ to happen */
127 WAIT_CMD
= 10 * HZ
, /* 10s */
128 /* Some drives require a longer IRQ timeout. */
129 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
131 * Some drives (for example, Seagate STT3401A Travan) require a very
132 * long timeout, because they don't return an interrupt or clear their
133 * BSY bit until after the command completes (even retension commands).
135 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
136 /* minimum sleep time */
137 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
141 * Op codes for special requests to be handled by ide_special_rq().
142 * Values should be in the range of 0x20 to 0x3f.
144 #define REQ_DRIVE_RESET 0x20
145 #define REQ_DEVSET_EXEC 0x21
146 #define REQ_PARK_HEADS 0x22
147 #define REQ_UNPARK_HEADS 0x23
150 * Check for an interrupt and acknowledge the interrupt status
153 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
159 enum { ide_unknown
, ide_generic
, ide_pci
,
160 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
161 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
162 ide_4drives
, ide_pmac
, ide_acorn
,
163 ide_au1xxx
, ide_palm3710
166 typedef u8 hwif_chipset_t
;
169 * Structure to hold all information about the location of this port
171 typedef struct hw_regs_s
{
173 struct ide_io_ports io_ports
;
174 unsigned long io_ports_array
[IDE_NR_PORTS
];
177 int irq
; /* our irq number */
178 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
179 hwif_chipset_t chipset
;
180 struct device
*dev
, *parent
;
181 unsigned long config
;
184 static inline void ide_std_init_ports(hw_regs_t
*hw
,
185 unsigned long io_addr
,
186 unsigned long ctl_addr
)
190 for (i
= 0; i
<= 7; i
++)
191 hw
->io_ports_array
[i
] = io_addr
++;
193 hw
->io_ports
.ctl_addr
= ctl_addr
;
199 * Now for the data we need to maintain per-drive: ide_drive_t
202 #define ide_scsi 0x21
203 #define ide_disk 0x20
204 #define ide_optical 0x7
205 #define ide_cdrom 0x5
207 #define ide_floppy 0x0
210 * Special Driver Flags
212 * set_geometry : respecify drive geometry
213 * recalibrate : seek to cyl 0
214 * set_multmode : set multmode count
220 unsigned set_geometry
: 1;
221 unsigned recalibrate
: 1;
222 unsigned set_multmode
: 1;
223 unsigned reserved
: 5;
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_TFLAG_LBA48
= (1 << 0),
237 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 1),
238 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 2),
239 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 3),
240 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 4),
241 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 5),
242 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
243 IDE_TFLAG_OUT_HOB_NSECT
|
244 IDE_TFLAG_OUT_HOB_LBAL
|
245 IDE_TFLAG_OUT_HOB_LBAM
|
246 IDE_TFLAG_OUT_HOB_LBAH
,
247 IDE_TFLAG_OUT_FEATURE
= (1 << 6),
248 IDE_TFLAG_OUT_NSECT
= (1 << 7),
249 IDE_TFLAG_OUT_LBAL
= (1 << 8),
250 IDE_TFLAG_OUT_LBAM
= (1 << 9),
251 IDE_TFLAG_OUT_LBAH
= (1 << 10),
252 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
253 IDE_TFLAG_OUT_NSECT
|
257 IDE_TFLAG_OUT_DEVICE
= (1 << 11),
258 IDE_TFLAG_WRITE
= (1 << 12),
259 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 13),
260 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 14),
261 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 15),
262 IDE_TFLAG_IN_HOB_NSECT
= (1 << 16),
263 IDE_TFLAG_IN_HOB_LBAL
= (1 << 17),
264 IDE_TFLAG_IN_HOB_LBAM
= (1 << 18),
265 IDE_TFLAG_IN_HOB_LBAH
= (1 << 19),
266 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
267 IDE_TFLAG_IN_HOB_LBAM
|
268 IDE_TFLAG_IN_HOB_LBAH
,
269 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
270 IDE_TFLAG_IN_HOB_NSECT
|
271 IDE_TFLAG_IN_HOB_LBA
,
272 IDE_TFLAG_IN_FEATURE
= (1 << 20),
273 IDE_TFLAG_IN_NSECT
= (1 << 21),
274 IDE_TFLAG_IN_LBAL
= (1 << 22),
275 IDE_TFLAG_IN_LBAM
= (1 << 23),
276 IDE_TFLAG_IN_LBAH
= (1 << 24),
277 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
280 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
282 IDE_TFLAG_IN_DEVICE
= (1 << 25),
283 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
285 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
287 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
289 /* force 16-bit I/O operations */
290 IDE_TFLAG_IO_16BIT
= (1 << 26),
291 /* ide_task_t was allocated using kmalloc() */
292 IDE_TFLAG_DYN
= (1 << 27),
296 IDE_FTFLAG_FLAGGED
= (1 << 0),
297 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
298 IDE_FTFLAG_OUT_DATA
= (1 << 2),
299 IDE_FTFLAG_IN_DATA
= (1 << 3),
302 struct ide_taskfile
{
303 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
305 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
311 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
314 u8 error
; /* read: error */
315 u8 feature
; /* write: feature */
318 u8 nsect
; /* 8: number of sectors */
319 u8 lbal
; /* 9: LBA low */
320 u8 lbam
; /* 10: LBA mid */
321 u8 lbah
; /* 11: LBA high */
323 u8 device
; /* 12: device select */
326 u8 status
; /* read: status */
327 u8 command
; /* write: command */
331 typedef struct ide_task_s
{
333 struct ide_taskfile tf
;
336 u8 ftf_flags
; /* for TASKFILE ioctl */
339 struct request
*rq
; /* copy of request */
340 void *special
; /* valid_t generally */
343 /* ATAPI packet command flags */
345 /* set when an error is considered normal - no retry (ide-tape) */
346 PC_FLAG_ABORT
= (1 << 0),
347 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
348 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
349 PC_FLAG_DMA_OK
= (1 << 3),
350 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
351 PC_FLAG_DMA_ERROR
= (1 << 5),
352 PC_FLAG_WRITING
= (1 << 6),
356 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
357 * This is used for several packet commands (not for READ/WRITE commands).
359 #define IDE_PC_BUFFER_SIZE 256
360 #define ATAPI_WAIT_PC (60 * HZ)
362 struct ide_atapi_pc
{
363 /* actual packet bytes */
365 /* incremented on each retry */
369 /* bytes to transfer */
371 /* bytes actually transferred */
376 /* current buffer position */
379 /* missing/available data on the current buffer */
382 /* the corresponding request */
388 * those are more or less driver-specific and some of them are subject
389 * to change/removal later.
391 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
394 struct idetape_bh
*bh
;
397 struct scatterlist
*sg
;
400 unsigned long timeout
;
406 #ifdef CONFIG_BLK_DEV_IDEACPI
407 struct ide_acpi_drive_link
;
408 struct ide_acpi_hwif_link
;
413 struct ide_disk_ops
{
414 int (*check
)(struct ide_drive_s
*, const char *);
415 int (*get_capacity
)(struct ide_drive_s
*);
416 void (*setup
)(struct ide_drive_s
*);
417 void (*flush
)(struct ide_drive_s
*);
418 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
419 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
421 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
423 int (*end_request
)(struct ide_drive_s
*, int, int);
424 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
425 fmode_t
, unsigned int, unsigned long);
428 /* ATAPI device flags */
430 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
433 /* Drive cannot eject the disc. */
434 IDE_AFLAG_NO_EJECT
= (1 << 1),
435 /* Drive is a pre ATAPI 1.2 drive. */
436 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
437 /* TOC addresses are in BCD. */
438 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
439 /* TOC track numbers are in BCD. */
440 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
442 * Drive does not provide data in multiples of SECTOR_SIZE
443 * when more than one interrupt is needed.
445 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 5),
446 /* Saved TOC information is current. */
447 IDE_AFLAG_TOC_VALID
= (1 << 6),
448 /* We think that the drive door is locked. */
449 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
450 /* SET_CD_SPEED command is unsupported. */
451 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
452 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
453 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
454 IDE_AFLAG_SANYO_3CD
= (1 << 11),
455 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
456 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
457 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
460 /* Avoid commands not supported in Clik drive */
461 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
462 /* Requires BH algorithm for packets */
463 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
464 /* Supports format progress report */
465 IDE_AFLAG_SRFP
= (1 << 17),
468 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
469 /* 0 When the tape position is unknown */
470 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
471 /* Device already opened */
472 IDE_AFLAG_BUSY
= (1 << 20),
473 /* Attempt to auto-detect the current user block size */
474 IDE_AFLAG_DETECT_BS
= (1 << 21),
475 /* Currently on a filemark */
476 IDE_AFLAG_FILEMARK
= (1 << 22),
477 /* 0 = no tape is loaded, so we don't rewind after ejecting */
478 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
480 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
485 /* restore settings after device reset */
486 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
487 /* device is using DMA for read/write */
488 IDE_DFLAG_USING_DMA
= (1 << 1),
489 /* okay to unmask other IRQs */
490 IDE_DFLAG_UNMASK
= (1 << 2),
491 /* don't attempt flushes */
492 IDE_DFLAG_NOFLUSH
= (1 << 3),
494 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
495 /* give potential excess bandwidth */
496 IDE_DFLAG_NICE1
= (1 << 5),
497 /* device is physically present */
498 IDE_DFLAG_PRESENT
= (1 << 6),
499 /* id read from device (synthetic if not set) */
500 IDE_DFLAG_ID_READ
= (1 << 8),
501 IDE_DFLAG_NOPROBE
= (1 << 9),
502 /* need to do check_media_change() */
503 IDE_DFLAG_REMOVABLE
= (1 << 10),
504 /* needed for removable devices */
505 IDE_DFLAG_ATTACH
= (1 << 11),
506 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
507 /* disallow setting unmask bit */
508 IDE_DFLAG_NO_UNMASK
= (1 << 13),
509 /* disallow enabling 32-bit I/O */
510 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
511 /* for removable only: door lock/unlock works */
512 IDE_DFLAG_DOORLOCKING
= (1 << 15),
514 IDE_DFLAG_NODMA
= (1 << 16),
515 /* powermanagment told us not to do anything, so sleep nicely */
516 IDE_DFLAG_BLOCKED
= (1 << 17),
517 /* sleeping & sleep field valid */
518 IDE_DFLAG_SLEEPING
= (1 << 18),
519 IDE_DFLAG_POST_RESET
= (1 << 19),
520 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
521 IDE_DFLAG_LBA48
= (1 << 21),
522 /* status of write cache */
523 IDE_DFLAG_WCACHE
= (1 << 22),
524 /* used for ignoring ATA_DF */
525 IDE_DFLAG_NOWERR
= (1 << 23),
526 /* retrying in PIO */
527 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
528 IDE_DFLAG_LBA
= (1 << 25),
529 /* don't unload heads */
530 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
531 /* heads unloaded, please don't reset port */
532 IDE_DFLAG_PARKED
= (1 << 27),
533 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
535 IDE_DFLAG_WP
= (1 << 29),
536 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
540 char name
[4]; /* drive name, such as "hda" */
541 char driver_req
[10]; /* requests specific driver */
543 struct request_queue
*queue
; /* request queue */
545 struct request
*rq
; /* current request */
546 void *driver_data
; /* extra driver data */
547 u16
*id
; /* identification info */
548 #ifdef CONFIG_IDE_PROC_FS
549 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
550 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
552 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
554 const struct ide_disk_ops
*disk_ops
;
556 unsigned long dev_flags
;
558 unsigned long sleep
; /* sleep until this time */
559 unsigned long timeout
; /* max time to wait for irq */
561 special_t special
; /* special action flags */
563 u8 select
; /* basic drive/head select reg value */
564 u8 retry_pio
; /* retrying dma capable host in pio */
565 u8 waiting_for_dma
; /* dma currently in progress */
566 u8 dma
; /* atapi dma flag */
568 u8 quirk_list
; /* considered quirky, set for a specific host */
569 u8 init_speed
; /* transfer rate set at boot */
570 u8 current_speed
; /* current transfer rate set */
571 u8 desired_speed
; /* desired transfer rate set */
572 u8 dn
; /* now wide spread use */
573 u8 acoustic
; /* acoustic management */
574 u8 media
; /* disk, cdrom, tape, floppy, ... */
575 u8 ready_stat
; /* min status value for drive ready */
576 u8 mult_count
; /* current multiple sector setting */
577 u8 mult_req
; /* requested multiple sector setting */
578 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
579 u8 bad_wstat
; /* used for ignoring ATA_DF */
580 u8 head
; /* "real" number of heads */
581 u8 sect
; /* "real" sectors per track */
582 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
583 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
585 /* delay this long before sending packet command */
588 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
589 unsigned int cyl
; /* "real" number of cyls */
590 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
591 unsigned int failures
; /* current failure count */
592 unsigned int max_failures
; /* maximum allowed failure count */
593 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
595 u64 capacity64
; /* total number of sectors */
597 int lun
; /* logical unit */
598 int crc_count
; /* crc counter to reduce drive speed */
600 unsigned long debug_mask
; /* debugging levels switch */
602 #ifdef CONFIG_BLK_DEV_IDEACPI
603 struct ide_acpi_drive_link
*acpidata
;
605 struct list_head list
;
606 struct device gendev
;
607 struct completion gendev_rel_comp
; /* to deal with device release() */
609 /* current packet command */
610 struct ide_atapi_pc
*pc
;
612 /* last failed packet command */
613 struct ide_atapi_pc
*failed_pc
;
615 /* callback for packet commands */
616 void (*pc_callback
)(struct ide_drive_s
*, int);
618 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
619 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
622 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
624 unsigned long atapi_flags
;
626 struct ide_atapi_pc request_sense_pc
;
627 struct request request_sense_rq
;
630 typedef struct ide_drive_s ide_drive_t
;
632 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
634 #define to_ide_drv(obj, cont_type) \
635 container_of(obj, struct cont_type, dev)
637 #define ide_drv_g(disk, cont_type) \
638 container_of((disk)->private_data, struct cont_type, driver)
640 struct ide_port_info
;
643 void (*exec_command
)(struct hwif_s
*, u8
);
644 u8 (*read_status
)(struct hwif_s
*);
645 u8 (*read_altstatus
)(struct hwif_s
*);
647 void (*set_irq
)(struct hwif_s
*, int);
649 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
650 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
652 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
654 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
658 extern const struct ide_tp_ops default_tp_ops
;
661 * struct ide_port_ops - IDE port operations
663 * @init_dev: host specific initialization of a device
664 * @set_pio_mode: routine to program host for PIO mode
665 * @set_dma_mode: routine to program host for DMA mode
666 * @selectproc: tweaks hardware to select drive
667 * @reset_poll: chipset polling based on hba specifics
668 * @pre_reset: chipset specific changes to default for device-hba resets
669 * @resetproc: routine to reset controller after a disk reset
670 * @maskproc: special host masking for drive selection
671 * @quirkproc: check host's drive quirk list
672 * @clear_irq: clear IRQ
674 * @mdma_filter: filter MDMA modes
675 * @udma_filter: filter UDMA modes
677 * @cable_detect: detect cable type
679 struct ide_port_ops
{
680 void (*init_dev
)(ide_drive_t
*);
681 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
682 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
683 void (*selectproc
)(ide_drive_t
*);
684 int (*reset_poll
)(ide_drive_t
*);
685 void (*pre_reset
)(ide_drive_t
*);
686 void (*resetproc
)(ide_drive_t
*);
687 void (*maskproc
)(ide_drive_t
*, int);
688 void (*quirkproc
)(ide_drive_t
*);
689 void (*clear_irq
)(ide_drive_t
*);
691 u8 (*mdma_filter
)(ide_drive_t
*);
692 u8 (*udma_filter
)(ide_drive_t
*);
694 u8 (*cable_detect
)(struct hwif_s
*);
698 void (*dma_host_set
)(struct ide_drive_s
*, int);
699 int (*dma_setup
)(struct ide_drive_s
*);
700 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
701 void (*dma_start
)(struct ide_drive_s
*);
702 int (*dma_end
)(struct ide_drive_s
*);
703 int (*dma_test_irq
)(struct ide_drive_s
*);
704 void (*dma_lost_irq
)(struct ide_drive_s
*);
705 void (*dma_timeout
)(struct ide_drive_s
*);
707 * The following method is optional and only required to be
708 * implemented for the SFF-8038i compatible controllers.
710 u8 (*dma_sff_read_status
)(struct hwif_s
*);
715 typedef struct hwif_s
{
716 struct hwif_s
*mate
; /* other hwif from same PCI chip */
717 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
719 struct ide_host
*host
;
721 char name
[6]; /* name of interface, eg. "ide0" */
723 struct ide_io_ports io_ports
;
725 unsigned long sata_scr
[SATA_NR_PORTS
];
727 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
729 u8 major
; /* our major number */
730 u8 index
; /* 0 for ide0; 1 for ide1; ... */
731 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
741 u8 cbl
; /* cable type */
743 hwif_chipset_t chipset
; /* sub-module for tuning.. */
747 ide_ack_intr_t
*ack_intr
;
749 void (*rw_disk
)(ide_drive_t
*, struct request
*);
751 const struct ide_tp_ops
*tp_ops
;
752 const struct ide_port_ops
*port_ops
;
753 const struct ide_dma_ops
*dma_ops
;
755 /* dma physical region descriptor table (cpu view) */
756 unsigned int *dmatable_cpu
;
757 /* dma physical region descriptor table (dma view) */
758 dma_addr_t dmatable_dma
;
760 /* maximum number of PRD table entries */
762 /* PRD entry size in bytes */
765 /* Scatter-gather list used to build the above */
766 struct scatterlist
*sg_table
;
767 int sg_max_nents
; /* Maximum number of entries in it */
768 int sg_nents
; /* Current number of entries in it */
770 int sg_dma_direction
; /* dma transfer direction */
772 struct ide_task_s task
; /* current command */
776 struct scatterlist
*cursg
;
777 unsigned int cursg_ofs
;
779 int rqsize
; /* max sectors per request */
780 int irq
; /* our irq number */
782 unsigned long dma_base
; /* base addr for dma ports */
784 unsigned long config_data
; /* for use by chipset-specific code */
785 unsigned long select_data
; /* for use by chipset-specific code */
787 unsigned long extra_base
; /* extra addr for dma ports */
788 unsigned extra_ports
; /* number of extra dma ports */
790 unsigned present
: 1; /* this interface exists */
791 unsigned busy
: 1; /* serializes devices on a port */
793 struct device gendev
;
794 struct device
*portdev
;
796 struct completion gendev_rel_comp
; /* To deal with device release() */
798 void *hwif_data
; /* extra hwif data */
800 #ifdef CONFIG_BLK_DEV_IDEACPI
801 struct ide_acpi_hwif_link
*acpidata
;
804 /* IRQ handler, if active */
805 ide_startstop_t (*handler
)(ide_drive_t
*);
807 /* BOOL: polling active & poll_timeout field valid */
808 unsigned int polling
: 1;
811 ide_drive_t
*cur_dev
;
813 /* current request */
817 struct timer_list timer
;
818 /* timeout value during long polls */
819 unsigned long poll_timeout
;
820 /* queried upon timeouts */
821 int (*expiry
)(ide_drive_t
*);
827 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
829 #define MAX_HOST_PORTS 4
832 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
833 unsigned int n_ports
;
834 struct device
*dev
[2];
836 int (*init_chipset
)(struct pci_dev
*);
838 void (*get_lock
)(irq_handler_t
, void *);
839 void (*release_lock
)(void);
841 irq_handler_t irq_handler
;
843 unsigned long host_flags
;
848 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
850 /* used for hosts requiring serialization */
851 volatile unsigned long host_busy
;
854 #define IDE_HOST_BUSY 0
857 * internal ide interrupt handler type
859 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
860 typedef int (ide_expiry_t
)(ide_drive_t
*);
862 /* used by ide-cd, ide-floppy, etc. */
863 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
865 extern struct mutex ide_setting_mtx
;
868 * configurable drive settings
871 #define DS_SYNC (1 << 0)
874 int (*get
)(ide_drive_t
*);
875 int (*set
)(ide_drive_t
*, int);
879 #define __DEVSET(_flags, _get, _set) { \
885 #define ide_devset_get(name, field) \
886 static int get_##name(ide_drive_t *drive) \
888 return drive->field; \
891 #define ide_devset_set(name, field) \
892 static int set_##name(ide_drive_t *drive, int arg) \
894 drive->field = arg; \
898 #define ide_devset_get_flag(name, flag) \
899 static int get_##name(ide_drive_t *drive) \
901 return !!(drive->dev_flags & flag); \
904 #define ide_devset_set_flag(name, flag) \
905 static int set_##name(ide_drive_t *drive, int arg) \
908 drive->dev_flags |= flag; \
910 drive->dev_flags &= ~flag; \
914 #define __IDE_DEVSET(_name, _flags, _get, _set) \
915 const struct ide_devset ide_devset_##_name = \
916 __DEVSET(_flags, _get, _set)
918 #define IDE_DEVSET(_name, _flags, _get, _set) \
919 static __IDE_DEVSET(_name, _flags, _get, _set)
921 #define ide_devset_rw(_name, _func) \
922 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
924 #define ide_devset_w(_name, _func) \
925 IDE_DEVSET(_name, 0, NULL, set_##_func)
927 #define ide_ext_devset_rw(_name, _func) \
928 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
930 #define ide_ext_devset_rw_sync(_name, _func) \
931 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
933 #define ide_decl_devset(_name) \
934 extern const struct ide_devset ide_devset_##_name
936 ide_decl_devset(io_32bit
);
937 ide_decl_devset(keepsettings
);
938 ide_decl_devset(pio_mode
);
939 ide_decl_devset(unmaskirq
);
940 ide_decl_devset(using_dma
);
942 #ifdef CONFIG_IDE_PROC_FS
944 * /proc/ide interface
947 #define ide_devset_rw_field(_name, _field) \
948 ide_devset_get(_name, _field); \
949 ide_devset_set(_name, _field); \
950 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
952 #define ide_devset_rw_flag(_name, _field) \
953 ide_devset_get_flag(_name, _field); \
954 ide_devset_set_flag(_name, _field); \
955 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
957 struct ide_proc_devset
{
959 const struct ide_devset
*setting
;
961 int (*mulf
)(ide_drive_t
*);
962 int (*divf
)(ide_drive_t
*);
965 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
966 .name = __stringify(_name), \
967 .setting = &ide_devset_##_name, \
974 #define IDE_PROC_DEVSET(_name, _min, _max) \
975 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
980 read_proc_t
*read_proc
;
981 write_proc_t
*write_proc
;
984 void proc_ide_create(void);
985 void proc_ide_destroy(void);
986 void ide_proc_register_port(ide_hwif_t
*);
987 void ide_proc_port_register_devices(ide_hwif_t
*);
988 void ide_proc_unregister_device(ide_drive_t
*);
989 void ide_proc_unregister_port(ide_hwif_t
*);
990 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
991 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
993 read_proc_t proc_ide_read_capacity
;
994 read_proc_t proc_ide_read_geometry
;
997 * Standard exit stuff:
999 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1002 if (len < count) { \
1008 *start = page + off; \
1012 static inline void proc_ide_create(void) { ; }
1013 static inline void proc_ide_destroy(void) { ; }
1014 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1015 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1016 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1017 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1018 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
1019 struct ide_driver
*driver
) { ; }
1020 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
1021 struct ide_driver
*driver
) { ; }
1022 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1026 /* enter/exit functions */
1027 IDE_DBG_FUNC
= (1 << 0),
1028 /* sense key/asc handling */
1029 IDE_DBG_SENSE
= (1 << 1),
1030 /* packet commands handling */
1031 IDE_DBG_PC
= (1 << 2),
1032 /* request handling */
1033 IDE_DBG_RQ
= (1 << 3),
1034 /* driver probing/setup */
1035 IDE_DBG_PROBE
= (1 << 4),
1038 /* DRV_NAME has to be defined in the driver before using the macro below */
1039 #define __ide_debug_log(lvl, fmt, args...) \
1041 if (unlikely(drive->debug_mask & lvl)) \
1042 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1043 __func__, ## args); \
1047 * Power Management state machine (rq->pm->pm_step).
1049 * For each step, the core calls ide_start_power_step() first.
1051 * - ide_stopped : In this case, the core calls us back again unless
1052 * step have been set to ide_power_state_completed.
1053 * - ide_started : In this case, the channel is left busy until an
1054 * async event (interrupt) occurs.
1055 * Typically, ide_start_power_step() will issue a taskfile request with
1058 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1059 * with the error code if any. This routine should update the step value
1060 * and return. It should not start a new request. The core will call
1061 * ide_start_power_step() for the new step value, unless step have been
1062 * set to IDE_PM_COMPLETED.
1065 IDE_PM_START_SUSPEND
,
1066 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1069 IDE_PM_START_RESUME
,
1070 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1077 int generic_ide_suspend(struct device
*, pm_message_t
);
1078 int generic_ide_resume(struct device
*);
1080 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1081 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1082 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1083 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1086 * Subdrivers support.
1088 * The gendriver.owner field should be set to the module owner of this driver.
1089 * The gendriver.name field should be set to the name of this driver
1092 const char *version
;
1093 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1094 int (*end_request
)(ide_drive_t
*, int, int);
1095 struct device_driver gen_driver
;
1096 int (*probe
)(ide_drive_t
*);
1097 void (*remove
)(ide_drive_t
*);
1098 void (*resume
)(ide_drive_t
*);
1099 void (*shutdown
)(ide_drive_t
*);
1100 #ifdef CONFIG_IDE_PROC_FS
1101 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1102 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1106 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1108 int ide_device_get(ide_drive_t
*);
1109 void ide_device_put(ide_drive_t
*);
1111 struct ide_ioctl_devset
{
1112 unsigned int get_ioctl
;
1113 unsigned int set_ioctl
;
1114 const struct ide_devset
*setting
;
1117 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1118 unsigned long, const struct ide_ioctl_devset
*);
1120 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1122 extern int ide_vlb_clk
;
1123 extern int ide_pci_clk
;
1125 int ide_end_request(ide_drive_t
*, int, int);
1126 int ide_end_dequeued_request(ide_drive_t
*, struct request
*, int, int);
1127 void ide_kill_rq(ide_drive_t
*, struct request
*);
1129 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int,
1131 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int,
1134 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1137 void ide_execute_pkt_cmd(ide_drive_t
*);
1139 void ide_pad_transfer(ide_drive_t
*, int, int);
1141 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1143 void ide_fix_driveid(u16
*);
1145 extern void ide_fixstring(u8
*, const int, const int);
1147 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1149 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1151 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1152 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1154 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1156 extern int ide_devset_execute(ide_drive_t
*drive
,
1157 const struct ide_devset
*setting
, int arg
);
1159 void ide_complete_task(ide_drive_t
*, ide_task_t
*, u8
, u8
);
1160 void ide_complete_rq(ide_drive_t
*, u8
);
1162 void ide_tf_dump(const char *, struct ide_taskfile
*);
1164 void ide_exec_command(ide_hwif_t
*, u8
);
1165 u8
ide_read_status(ide_hwif_t
*);
1166 u8
ide_read_altstatus(ide_hwif_t
*);
1168 void ide_set_irq(ide_hwif_t
*, int);
1170 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1171 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1173 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1174 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1176 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1178 extern void SELECT_DRIVE(ide_drive_t
*);
1179 void SELECT_MASK(ide_drive_t
*, int);
1181 u8
ide_read_error(ide_drive_t
*);
1182 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1184 int ide_check_atapi_device(ide_drive_t
*, const char *);
1186 void ide_init_pc(struct ide_atapi_pc
*);
1188 /* Disk head parking */
1189 extern wait_queue_head_t ide_park_wq
;
1190 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1192 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1193 const char *buf
, size_t len
);
1196 * Special requests for ide-tape block device strategy routine.
1198 * In order to service a character device command, we add special requests to
1199 * the tail of our block device request queue and wait for their completion.
1202 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1203 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1204 REQ_IDETAPE_READ
= (1 << 2),
1205 REQ_IDETAPE_WRITE
= (1 << 3),
1208 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1210 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1211 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1212 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1213 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1214 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1216 int ide_cd_expiry(ide_drive_t
*);
1218 int ide_cd_get_xferlen(struct request
*);
1220 ide_startstop_t
ide_issue_pc(ide_drive_t
*);
1222 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1224 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1226 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1227 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1229 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1231 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*);
1233 extern int ide_driveid_update(ide_drive_t
*);
1234 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1235 extern u8
eighty_ninty_three (ide_drive_t
*);
1236 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1238 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1240 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1242 extern void ide_timer_expiry(unsigned long);
1243 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1244 extern void do_ide_request(struct request_queue
*);
1246 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1248 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1249 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1250 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1252 #define ide_pci_register_driver(d) pci_register_driver(d)
1255 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1257 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1262 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1263 hw_regs_t
*, hw_regs_t
**);
1264 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1266 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1267 int ide_pci_set_master(struct pci_dev
*, const char *);
1268 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1269 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1270 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1272 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1273 const struct ide_port_info
*d
)
1279 struct ide_pci_enablebit
{
1280 u8 reg
; /* byte pci reg holding the enable-bit */
1281 u8 mask
; /* mask to isolate the enable-bit */
1282 u8 val
; /* value of masked reg when "enabled" */
1286 /* Uses ISA control ports not PCI ones. */
1287 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1288 /* single port device */
1289 IDE_HFLAG_SINGLE
= (1 << 1),
1290 /* don't use legacy PIO blacklist */
1291 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1292 /* set for the second port of QD65xx */
1293 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1294 /* use PIO8/9 for prefetch off/on */
1295 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1296 /* use PIO6/7 for fast-devsel off/on */
1297 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1298 /* use 100-102 and 200-202 PIO values to set DMA modes */
1299 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1301 * keep DMA setting when programming PIO mode, may be used only
1302 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1304 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1305 /* program host for the transfer mode after programming device */
1306 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1307 /* don't program host/device for the transfer mode ("smart" hosts) */
1308 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1309 /* trust BIOS for programming chipset/device for DMA */
1310 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1311 /* host is CS5510/CS5520 */
1312 IDE_HFLAG_CS5520
= (1 << 11),
1313 /* ATAPI DMA is unsupported */
1314 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1315 /* set if host is a "non-bootable" controller */
1316 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1317 /* host doesn't support DMA */
1318 IDE_HFLAG_NO_DMA
= (1 << 14),
1319 /* check if host is PCI IDE device before allowing DMA */
1320 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1321 /* host uses MMIO */
1322 IDE_HFLAG_MMIO
= (1 << 16),
1324 IDE_HFLAG_NO_LBA48
= (1 << 17),
1326 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1327 /* data FIFO is cleared by an error */
1328 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1329 /* serialize ports */
1330 IDE_HFLAG_SERIALIZE
= (1 << 20),
1331 /* host is DTC2278 */
1332 IDE_HFLAG_DTC2278
= (1 << 21),
1333 /* 4 devices on a single set of I/O ports */
1334 IDE_HFLAG_4DRIVES
= (1 << 22),
1335 /* host is TRM290 */
1336 IDE_HFLAG_TRM290
= (1 << 23),
1337 /* use 32-bit I/O ops */
1338 IDE_HFLAG_IO_32BIT
= (1 << 24),
1340 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1341 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1342 /* serialize ports if DMA is possible (for sl82c105) */
1343 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1344 /* force host out of "simplex" mode */
1345 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1346 /* DSC overlap is unsupported */
1347 IDE_HFLAG_NO_DSC
= (1 << 29),
1348 /* never use 32-bit I/O ops */
1349 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1350 /* never unmask IRQs */
1351 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1354 #ifdef CONFIG_BLK_DEV_OFFBOARD
1355 # define IDE_HFLAG_OFF_BOARD 0
1357 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1360 struct ide_port_info
{
1363 int (*init_chipset
)(struct pci_dev
*);
1365 void (*get_lock
)(irq_handler_t
, void *);
1366 void (*release_lock
)(void);
1368 void (*init_iops
)(ide_hwif_t
*);
1369 void (*init_hwif
)(ide_hwif_t
*);
1370 int (*init_dma
)(ide_hwif_t
*,
1371 const struct ide_port_info
*);
1373 const struct ide_tp_ops
*tp_ops
;
1374 const struct ide_port_ops
*port_ops
;
1375 const struct ide_dma_ops
*dma_ops
;
1377 struct ide_pci_enablebit enablebits
[2];
1379 hwif_chipset_t chipset
;
1381 u16 max_sectors
; /* if < than the default one */
1393 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1394 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1395 const struct ide_port_info
*, void *);
1396 void ide_pci_remove(struct pci_dev
*);
1399 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1400 int ide_pci_resume(struct pci_dev
*);
1402 #define ide_pci_suspend NULL
1403 #define ide_pci_resume NULL
1406 void ide_map_sg(ide_drive_t
*, struct request
*);
1407 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1409 #define BAD_DMA_DRIVE 0
1410 #define GOOD_DMA_DRIVE 1
1412 struct drive_list_entry
{
1413 const char *id_model
;
1414 const char *id_firmware
;
1417 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1419 #ifdef CONFIG_BLK_DEV_IDEDMA
1420 int ide_dma_good_drive(ide_drive_t
*);
1421 int __ide_dma_bad_drive(ide_drive_t
*);
1422 int ide_id_dma_bug(ide_drive_t
*);
1424 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1426 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1428 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1431 void ide_dma_off_quietly(ide_drive_t
*);
1432 void ide_dma_off(ide_drive_t
*);
1433 void ide_dma_on(ide_drive_t
*);
1434 int ide_set_dma(ide_drive_t
*);
1435 void ide_check_dma_crc(ide_drive_t
*);
1436 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1438 int ide_allocate_dma_engine(ide_hwif_t
*);
1439 void ide_release_dma_engine(ide_hwif_t
*);
1441 int ide_build_sglist(ide_drive_t
*, struct request
*);
1442 void ide_destroy_dmatable(ide_drive_t
*);
1444 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1445 int config_drive_for_dma(ide_drive_t
*);
1446 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1447 void ide_dma_host_set(ide_drive_t
*, int);
1448 extern int ide_dma_setup(ide_drive_t
*);
1449 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1450 extern void ide_dma_start(ide_drive_t
*);
1451 int ide_dma_end(ide_drive_t
*);
1452 int ide_dma_test_irq(ide_drive_t
*);
1453 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1454 extern const struct ide_dma_ops sff_dma_ops
;
1456 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1457 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1459 void ide_dma_lost_irq(ide_drive_t
*);
1460 void ide_dma_timeout(ide_drive_t
*);
1461 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1464 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1465 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1466 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1467 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1468 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1469 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1470 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1471 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1472 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1473 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1474 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1475 #endif /* CONFIG_BLK_DEV_IDEDMA */
1477 #ifdef CONFIG_BLK_DEV_IDEACPI
1478 int ide_acpi_init(void);
1479 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1480 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1481 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1482 void ide_acpi_init_port(ide_hwif_t
*);
1483 void ide_acpi_port_init_devices(ide_hwif_t
*);
1484 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1486 static inline int ide_acpi_init(void) { return 0; }
1487 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1488 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1489 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1490 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1491 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1492 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1495 void ide_register_region(struct gendisk
*);
1496 void ide_unregister_region(struct gendisk
*);
1498 void ide_undecoded_slave(ide_drive_t
*);
1500 void ide_port_apply_params(ide_hwif_t
*);
1501 int ide_sysfs_register_port(ide_hwif_t
*);
1503 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1504 void ide_host_free(struct ide_host
*);
1505 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1507 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1508 struct ide_host
**);
1509 void ide_host_remove(struct ide_host
*);
1510 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1511 void ide_port_unregister_devices(ide_hwif_t
*);
1512 void ide_port_scan(ide_hwif_t
*);
1514 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1516 return hwif
->hwif_data
;
1519 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1521 hwif
->hwif_data
= data
;
1524 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1526 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1527 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1532 u16 act8b
; /* t2 for 8-bit io */
1533 u16 rec8b
; /* t2i for 8-bit io */
1534 u16 cyc8b
; /* t0 for 8-bit io */
1535 u16 active
; /* t2 or tD */
1536 u16 recover
; /* t2i or tK */
1538 u16 udma
; /* t2CYCTYP/2 */
1542 IDE_TIMING_SETUP
= (1 << 0),
1543 IDE_TIMING_ACT8B
= (1 << 1),
1544 IDE_TIMING_REC8B
= (1 << 2),
1545 IDE_TIMING_CYC8B
= (1 << 3),
1546 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1548 IDE_TIMING_ACTIVE
= (1 << 4),
1549 IDE_TIMING_RECOVER
= (1 << 5),
1550 IDE_TIMING_CYCLE
= (1 << 6),
1551 IDE_TIMING_UDMA
= (1 << 7),
1552 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1553 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1554 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1557 struct ide_timing
*ide_timing_find_mode(u8
);
1558 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1559 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1560 struct ide_timing
*, unsigned int);
1561 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1563 #ifdef CONFIG_IDE_XFER_MODE
1564 int ide_scan_pio_blacklist(char *);
1565 const char *ide_xfer_verbose(u8
);
1566 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1567 int ide_set_pio_mode(ide_drive_t
*, u8
);
1568 int ide_set_dma_mode(ide_drive_t
*, u8
);
1569 void ide_set_pio(ide_drive_t
*, u8
);
1570 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1572 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1573 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1576 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1578 ide_set_pio(drive
, 255);
1581 char *ide_media_string(ide_drive_t
*);
1583 extern struct device_attribute ide_dev_attrs
[];
1584 extern struct bus_type ide_bus_type
;
1585 extern struct class *ide_port_class
;
1587 static inline void ide_dump_identify(u8
*id
)
1589 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1592 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1594 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1597 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1599 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1601 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1604 #define ide_port_for_each_dev(i, dev, port) \
1605 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1607 #define ide_port_for_each_present_dev(i, dev, port) \
1608 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1609 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1611 #define ide_host_for_each_port(i, port, host) \
1612 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)