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)
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
;
196 /* for IDE PCI controllers in legacy mode, temporary */
197 static inline int __ide_default_irq(unsigned long base
)
201 case 0x1f0: return isa_irq_to_vector(14);
202 case 0x170: return isa_irq_to_vector(15);
204 case 0x1f0: return 14;
205 case 0x170: return 15;
211 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
212 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
213 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
216 #include <asm-generic/ide_iops.h>
221 /* Currently only m68k, apus and m8xx need it */
222 #ifndef IDE_ARCH_ACK_INTR
223 # define ide_ack_intr(hwif) (1)
226 /* Currently only Atari needs it */
227 #ifndef IDE_ARCH_LOCK
228 # define ide_release_lock() do {} while (0)
229 # define ide_get_lock(hdlr, data) do {} while (0)
230 #endif /* IDE_ARCH_LOCK */
233 * Now for the data we need to maintain per-drive: ide_drive_t
236 #define ide_scsi 0x21
237 #define ide_disk 0x20
238 #define ide_optical 0x7
239 #define ide_cdrom 0x5
241 #define ide_floppy 0x0
244 * Special Driver Flags
246 * set_geometry : respecify drive geometry
247 * recalibrate : seek to cyl 0
248 * set_multmode : set multmode count
254 unsigned set_geometry
: 1;
255 unsigned recalibrate
: 1;
256 unsigned set_multmode
: 1;
257 unsigned reserved
: 5;
262 * Status returned from various ide_ functions
265 ide_stopped
, /* no drive operation was started */
266 ide_started
, /* a drive operation was started, handler was set */
270 IDE_TFLAG_LBA48
= (1 << 0),
271 IDE_TFLAG_FLAGGED
= (1 << 2),
272 IDE_TFLAG_OUT_DATA
= (1 << 3),
273 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
274 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
275 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
276 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
277 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
278 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
279 IDE_TFLAG_OUT_HOB_NSECT
|
280 IDE_TFLAG_OUT_HOB_LBAL
|
281 IDE_TFLAG_OUT_HOB_LBAM
|
282 IDE_TFLAG_OUT_HOB_LBAH
,
283 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
284 IDE_TFLAG_OUT_NSECT
= (1 << 10),
285 IDE_TFLAG_OUT_LBAL
= (1 << 11),
286 IDE_TFLAG_OUT_LBAM
= (1 << 12),
287 IDE_TFLAG_OUT_LBAH
= (1 << 13),
288 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
289 IDE_TFLAG_OUT_NSECT
|
293 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
294 IDE_TFLAG_WRITE
= (1 << 15),
295 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
296 IDE_TFLAG_IN_DATA
= (1 << 17),
297 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
298 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
299 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
300 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
301 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
302 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
303 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
304 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
305 IDE_TFLAG_IN_HOB_LBAM
|
306 IDE_TFLAG_IN_HOB_LBAH
,
307 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
308 IDE_TFLAG_IN_HOB_NSECT
|
309 IDE_TFLAG_IN_HOB_LBA
,
310 IDE_TFLAG_IN_FEATURE
= (1 << 1),
311 IDE_TFLAG_IN_NSECT
= (1 << 25),
312 IDE_TFLAG_IN_LBAL
= (1 << 26),
313 IDE_TFLAG_IN_LBAM
= (1 << 27),
314 IDE_TFLAG_IN_LBAH
= (1 << 28),
315 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
318 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
320 IDE_TFLAG_IN_DEVICE
= (1 << 29),
321 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
323 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
325 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
327 /* force 16-bit I/O operations */
328 IDE_TFLAG_IO_16BIT
= (1 << 30),
329 /* ide_task_t was allocated using kmalloc() */
330 IDE_TFLAG_DYN
= (1 << 31),
333 struct ide_taskfile
{
334 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
336 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
342 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
345 u8 error
; /* read: error */
346 u8 feature
; /* write: feature */
349 u8 nsect
; /* 8: number of sectors */
350 u8 lbal
; /* 9: LBA low */
351 u8 lbam
; /* 10: LBA mid */
352 u8 lbah
; /* 11: LBA high */
354 u8 device
; /* 12: device select */
357 u8 status
; /* read: status */
358 u8 command
; /* write: command */
362 typedef struct ide_task_s
{
364 struct ide_taskfile tf
;
369 struct request
*rq
; /* copy of request */
370 void *special
; /* valid_t generally */
373 /* ATAPI packet command flags */
375 /* set when an error is considered normal - no retry (ide-tape) */
376 PC_FLAG_ABORT
= (1 << 0),
377 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
378 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
379 PC_FLAG_DMA_OK
= (1 << 3),
380 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
381 PC_FLAG_DMA_ERROR
= (1 << 5),
382 PC_FLAG_WRITING
= (1 << 6),
383 /* command timed out */
384 PC_FLAG_TIMEDOUT
= (1 << 7),
388 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
389 * This is used for several packet commands (not for READ/WRITE commands).
391 #define IDE_PC_BUFFER_SIZE 256
392 #define ATAPI_WAIT_PC (60 * HZ)
394 struct ide_atapi_pc
{
395 /* actual packet bytes */
397 /* incremented on each retry */
401 /* bytes to transfer */
403 /* bytes actually transferred */
408 /* current buffer position */
411 /* missing/available data on the current buffer */
414 /* the corresponding request */
420 * those are more or less driver-specific and some of them are subject
421 * to change/removal later.
423 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
426 struct idetape_bh
*bh
;
429 struct scatterlist
*sg
;
432 unsigned long timeout
;
438 #ifdef CONFIG_BLK_DEV_IDEACPI
439 struct ide_acpi_drive_link
;
440 struct ide_acpi_hwif_link
;
445 struct ide_disk_ops
{
446 int (*check
)(struct ide_drive_s
*, const char *);
447 int (*get_capacity
)(struct ide_drive_s
*);
448 void (*setup
)(struct ide_drive_s
*);
449 void (*flush
)(struct ide_drive_s
*);
450 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
451 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
453 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
455 int (*end_request
)(struct ide_drive_s
*, int, int);
456 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
457 fmode_t
, unsigned int, unsigned long);
460 /* ATAPI device flags */
462 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
465 /* Drive cannot eject the disc. */
466 IDE_AFLAG_NO_EJECT
= (1 << 1),
467 /* Drive is a pre ATAPI 1.2 drive. */
468 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
469 /* TOC addresses are in BCD. */
470 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
471 /* TOC track numbers are in BCD. */
472 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
474 * Drive does not provide data in multiples of SECTOR_SIZE
475 * when more than one interrupt is needed.
477 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 5),
478 /* Saved TOC information is current. */
479 IDE_AFLAG_TOC_VALID
= (1 << 6),
480 /* We think that the drive door is locked. */
481 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
482 /* SET_CD_SPEED command is unsupported. */
483 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
484 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
485 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
486 IDE_AFLAG_SANYO_3CD
= (1 << 11),
487 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
488 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
489 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
492 /* Avoid commands not supported in Clik drive */
493 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
494 /* Requires BH algorithm for packets */
495 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
496 /* Supports format progress report */
497 IDE_AFLAG_SRFP
= (1 << 17),
500 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
501 /* 0 When the tape position is unknown */
502 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
503 /* Device already opened */
504 IDE_AFLAG_BUSY
= (1 << 20),
505 /* Attempt to auto-detect the current user block size */
506 IDE_AFLAG_DETECT_BS
= (1 << 21),
507 /* Currently on a filemark */
508 IDE_AFLAG_FILEMARK
= (1 << 22),
509 /* 0 = no tape is loaded, so we don't rewind after ejecting */
510 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
512 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
517 /* restore settings after device reset */
518 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
519 /* device is using DMA for read/write */
520 IDE_DFLAG_USING_DMA
= (1 << 1),
521 /* okay to unmask other IRQs */
522 IDE_DFLAG_UNMASK
= (1 << 2),
523 /* don't attempt flushes */
524 IDE_DFLAG_NOFLUSH
= (1 << 3),
526 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
527 /* give potential excess bandwidth */
528 IDE_DFLAG_NICE1
= (1 << 5),
529 /* device is physically present */
530 IDE_DFLAG_PRESENT
= (1 << 6),
531 /* device ejected hint */
532 IDE_DFLAG_DEAD
= (1 << 7),
533 /* id read from device (synthetic if not set) */
534 IDE_DFLAG_ID_READ
= (1 << 8),
535 IDE_DFLAG_NOPROBE
= (1 << 9),
536 /* need to do check_media_change() */
537 IDE_DFLAG_REMOVABLE
= (1 << 10),
538 /* needed for removable devices */
539 IDE_DFLAG_ATTACH
= (1 << 11),
540 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
541 /* disallow setting unmask bit */
542 IDE_DFLAG_NO_UNMASK
= (1 << 13),
543 /* disallow enabling 32-bit I/O */
544 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
545 /* for removable only: door lock/unlock works */
546 IDE_DFLAG_DOORLOCKING
= (1 << 15),
548 IDE_DFLAG_NODMA
= (1 << 16),
549 /* powermanagment told us not to do anything, so sleep nicely */
550 IDE_DFLAG_BLOCKED
= (1 << 17),
551 /* sleeping & sleep field valid */
552 IDE_DFLAG_SLEEPING
= (1 << 18),
553 IDE_DFLAG_POST_RESET
= (1 << 19),
554 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
555 IDE_DFLAG_LBA48
= (1 << 21),
556 /* status of write cache */
557 IDE_DFLAG_WCACHE
= (1 << 22),
558 /* used for ignoring ATA_DF */
559 IDE_DFLAG_NOWERR
= (1 << 23),
560 /* retrying in PIO */
561 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
562 IDE_DFLAG_LBA
= (1 << 25),
563 /* don't unload heads */
564 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
565 /* heads unloaded, please don't reset port */
566 IDE_DFLAG_PARKED
= (1 << 27),
567 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
569 IDE_DFLAG_WP
= (1 << 29),
570 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
574 char name
[4]; /* drive name, such as "hda" */
575 char driver_req
[10]; /* requests specific driver */
577 struct request_queue
*queue
; /* request queue */
579 struct request
*rq
; /* current request */
580 void *driver_data
; /* extra driver data */
581 u16
*id
; /* identification info */
582 #ifdef CONFIG_IDE_PROC_FS
583 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
584 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
586 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
588 const struct ide_disk_ops
*disk_ops
;
590 unsigned long dev_flags
;
592 unsigned long sleep
; /* sleep until this time */
593 unsigned long timeout
; /* max time to wait for irq */
595 special_t special
; /* special action flags */
597 u8 select
; /* basic drive/head select reg value */
598 u8 retry_pio
; /* retrying dma capable host in pio */
599 u8 waiting_for_dma
; /* dma currently in progress */
600 u8 dma
; /* atapi dma flag */
602 u8 quirk_list
; /* considered quirky, set for a specific host */
603 u8 init_speed
; /* transfer rate set at boot */
604 u8 current_speed
; /* current transfer rate set */
605 u8 desired_speed
; /* desired transfer rate set */
606 u8 dn
; /* now wide spread use */
607 u8 acoustic
; /* acoustic management */
608 u8 media
; /* disk, cdrom, tape, floppy, ... */
609 u8 ready_stat
; /* min status value for drive ready */
610 u8 mult_count
; /* current multiple sector setting */
611 u8 mult_req
; /* requested multiple sector setting */
612 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
613 u8 bad_wstat
; /* used for ignoring ATA_DF */
614 u8 head
; /* "real" number of heads */
615 u8 sect
; /* "real" sectors per track */
616 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
617 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
619 /* delay this long before sending packet command */
622 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
623 unsigned int cyl
; /* "real" number of cyls */
624 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
625 unsigned int failures
; /* current failure count */
626 unsigned int max_failures
; /* maximum allowed failure count */
627 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
629 u64 capacity64
; /* total number of sectors */
631 int lun
; /* logical unit */
632 int crc_count
; /* crc counter to reduce drive speed */
634 unsigned long debug_mask
; /* debugging levels switch */
636 #ifdef CONFIG_BLK_DEV_IDEACPI
637 struct ide_acpi_drive_link
*acpidata
;
639 struct list_head list
;
640 struct device gendev
;
641 struct completion gendev_rel_comp
; /* to deal with device release() */
643 /* current packet command */
644 struct ide_atapi_pc
*pc
;
646 /* callback for packet commands */
647 void (*pc_callback
)(struct ide_drive_s
*, int);
649 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
650 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
653 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
655 unsigned long atapi_flags
;
657 struct ide_atapi_pc request_sense_pc
;
658 struct request request_sense_rq
;
661 typedef struct ide_drive_s ide_drive_t
;
663 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
665 #define to_ide_drv(obj, cont_type) \
666 container_of(obj, struct cont_type, dev)
668 #define ide_drv_g(disk, cont_type) \
669 container_of((disk)->private_data, struct cont_type, driver)
671 struct ide_port_info
;
674 void (*exec_command
)(struct hwif_s
*, u8
);
675 u8 (*read_status
)(struct hwif_s
*);
676 u8 (*read_altstatus
)(struct hwif_s
*);
678 void (*set_irq
)(struct hwif_s
*, int);
680 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
681 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
683 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
685 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
689 extern const struct ide_tp_ops default_tp_ops
;
692 * struct ide_port_ops - IDE port operations
694 * @init_dev: host specific initialization of a device
695 * @set_pio_mode: routine to program host for PIO mode
696 * @set_dma_mode: routine to program host for DMA mode
697 * @selectproc: tweaks hardware to select drive
698 * @reset_poll: chipset polling based on hba specifics
699 * @pre_reset: chipset specific changes to default for device-hba resets
700 * @resetproc: routine to reset controller after a disk reset
701 * @maskproc: special host masking for drive selection
702 * @quirkproc: check host's drive quirk list
703 * @clear_irq: clear IRQ
705 * @mdma_filter: filter MDMA modes
706 * @udma_filter: filter UDMA modes
708 * @cable_detect: detect cable type
710 struct ide_port_ops
{
711 void (*init_dev
)(ide_drive_t
*);
712 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
713 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
714 void (*selectproc
)(ide_drive_t
*);
715 int (*reset_poll
)(ide_drive_t
*);
716 void (*pre_reset
)(ide_drive_t
*);
717 void (*resetproc
)(ide_drive_t
*);
718 void (*maskproc
)(ide_drive_t
*, int);
719 void (*quirkproc
)(ide_drive_t
*);
720 void (*clear_irq
)(ide_drive_t
*);
722 u8 (*mdma_filter
)(ide_drive_t
*);
723 u8 (*udma_filter
)(ide_drive_t
*);
725 u8 (*cable_detect
)(struct hwif_s
*);
729 void (*dma_host_set
)(struct ide_drive_s
*, int);
730 int (*dma_setup
)(struct ide_drive_s
*);
731 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
732 void (*dma_start
)(struct ide_drive_s
*);
733 int (*dma_end
)(struct ide_drive_s
*);
734 int (*dma_test_irq
)(struct ide_drive_s
*);
735 void (*dma_lost_irq
)(struct ide_drive_s
*);
736 void (*dma_timeout
)(struct ide_drive_s
*);
738 * The following method is optional and only required to be
739 * implemented for the SFF-8038i compatible controllers.
741 u8 (*dma_sff_read_status
)(struct hwif_s
*);
746 typedef struct hwif_s
{
747 struct hwif_s
*mate
; /* other hwif from same PCI chip */
748 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
750 struct ide_host
*host
;
752 char name
[6]; /* name of interface, eg. "ide0" */
754 struct ide_io_ports io_ports
;
756 unsigned long sata_scr
[SATA_NR_PORTS
];
758 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
760 u8 major
; /* our major number */
761 u8 index
; /* 0 for ide0; 1 for ide1; ... */
762 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
772 u8 cbl
; /* cable type */
774 hwif_chipset_t chipset
; /* sub-module for tuning.. */
778 ide_ack_intr_t
*ack_intr
;
780 void (*rw_disk
)(ide_drive_t
*, struct request
*);
782 const struct ide_tp_ops
*tp_ops
;
783 const struct ide_port_ops
*port_ops
;
784 const struct ide_dma_ops
*dma_ops
;
786 /* dma physical region descriptor table (cpu view) */
787 unsigned int *dmatable_cpu
;
788 /* dma physical region descriptor table (dma view) */
789 dma_addr_t dmatable_dma
;
791 /* maximum number of PRD table entries */
793 /* PRD entry size in bytes */
796 /* Scatter-gather list used to build the above */
797 struct scatterlist
*sg_table
;
798 int sg_max_nents
; /* Maximum number of entries in it */
799 int sg_nents
; /* Current number of entries in it */
800 int sg_dma_direction
; /* dma transfer direction */
802 /* data phase of the active command (currently only valid for PIO/DMA) */
805 struct ide_task_s task
; /* current command */
809 struct scatterlist
*cursg
;
810 unsigned int cursg_ofs
;
812 int rqsize
; /* max sectors per request */
813 int irq
; /* our irq number */
815 unsigned long dma_base
; /* base addr for dma ports */
817 unsigned long config_data
; /* for use by chipset-specific code */
818 unsigned long select_data
; /* for use by chipset-specific code */
820 unsigned long extra_base
; /* extra addr for dma ports */
821 unsigned extra_ports
; /* number of extra dma ports */
823 unsigned present
: 1; /* this interface exists */
824 unsigned busy
: 1; /* serializes devices on a port */
826 struct device gendev
;
827 struct device
*portdev
;
829 struct completion gendev_rel_comp
; /* To deal with device release() */
831 void *hwif_data
; /* extra hwif data */
833 #ifdef CONFIG_BLK_DEV_IDEACPI
834 struct ide_acpi_hwif_link
*acpidata
;
837 /* IRQ handler, if active */
838 ide_startstop_t (*handler
)(ide_drive_t
*);
840 /* BOOL: polling active & poll_timeout field valid */
841 unsigned int polling
: 1;
844 ide_drive_t
*cur_dev
;
846 /* current request */
850 struct timer_list timer
;
851 /* timeout value during long polls */
852 unsigned long poll_timeout
;
853 /* queried upon timeouts */
854 int (*expiry
)(ide_drive_t
*);
860 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
862 #define MAX_HOST_PORTS 4
865 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
866 unsigned int n_ports
;
867 struct device
*dev
[2];
868 unsigned int (*init_chipset
)(struct pci_dev
*);
869 irq_handler_t irq_handler
;
870 unsigned long host_flags
;
872 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
874 /* used for hosts requiring serialization */
875 volatile unsigned long host_busy
;
878 #define IDE_HOST_BUSY 0
881 * internal ide interrupt handler type
883 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
884 typedef int (ide_expiry_t
)(ide_drive_t
*);
886 /* used by ide-cd, ide-floppy, etc. */
887 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
889 extern struct mutex ide_setting_mtx
;
892 * configurable drive settings
895 #define DS_SYNC (1 << 0)
898 int (*get
)(ide_drive_t
*);
899 int (*set
)(ide_drive_t
*, int);
903 #define __DEVSET(_flags, _get, _set) { \
909 #define ide_devset_get(name, field) \
910 static int get_##name(ide_drive_t *drive) \
912 return drive->field; \
915 #define ide_devset_set(name, field) \
916 static int set_##name(ide_drive_t *drive, int arg) \
918 drive->field = arg; \
922 #define ide_devset_get_flag(name, flag) \
923 static int get_##name(ide_drive_t *drive) \
925 return !!(drive->dev_flags & flag); \
928 #define ide_devset_set_flag(name, flag) \
929 static int set_##name(ide_drive_t *drive, int arg) \
932 drive->dev_flags |= flag; \
934 drive->dev_flags &= ~flag; \
938 #define __IDE_DEVSET(_name, _flags, _get, _set) \
939 const struct ide_devset ide_devset_##_name = \
940 __DEVSET(_flags, _get, _set)
942 #define IDE_DEVSET(_name, _flags, _get, _set) \
943 static __IDE_DEVSET(_name, _flags, _get, _set)
945 #define ide_devset_rw(_name, _func) \
946 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
948 #define ide_devset_w(_name, _func) \
949 IDE_DEVSET(_name, 0, NULL, set_##_func)
951 #define ide_ext_devset_rw(_name, _func) \
952 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
954 #define ide_ext_devset_rw_sync(_name, _func) \
955 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
957 #define ide_decl_devset(_name) \
958 extern const struct ide_devset ide_devset_##_name
960 ide_decl_devset(io_32bit
);
961 ide_decl_devset(keepsettings
);
962 ide_decl_devset(pio_mode
);
963 ide_decl_devset(unmaskirq
);
964 ide_decl_devset(using_dma
);
966 #ifdef CONFIG_IDE_PROC_FS
968 * /proc/ide interface
971 #define ide_devset_rw_field(_name, _field) \
972 ide_devset_get(_name, _field); \
973 ide_devset_set(_name, _field); \
974 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
976 #define ide_devset_rw_flag(_name, _field) \
977 ide_devset_get_flag(_name, _field); \
978 ide_devset_set_flag(_name, _field); \
979 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
981 struct ide_proc_devset
{
983 const struct ide_devset
*setting
;
985 int (*mulf
)(ide_drive_t
*);
986 int (*divf
)(ide_drive_t
*);
989 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
990 .name = __stringify(_name), \
991 .setting = &ide_devset_##_name, \
998 #define IDE_PROC_DEVSET(_name, _min, _max) \
999 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1004 read_proc_t
*read_proc
;
1005 write_proc_t
*write_proc
;
1008 void proc_ide_create(void);
1009 void proc_ide_destroy(void);
1010 void ide_proc_register_port(ide_hwif_t
*);
1011 void ide_proc_port_register_devices(ide_hwif_t
*);
1012 void ide_proc_unregister_device(ide_drive_t
*);
1013 void ide_proc_unregister_port(ide_hwif_t
*);
1014 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
1015 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
1017 read_proc_t proc_ide_read_capacity
;
1018 read_proc_t proc_ide_read_geometry
;
1021 * Standard exit stuff:
1023 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1026 if (len < count) { \
1032 *start = page + off; \
1036 static inline void proc_ide_create(void) { ; }
1037 static inline void proc_ide_destroy(void) { ; }
1038 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1039 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1040 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1041 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1042 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
1043 struct ide_driver
*driver
) { ; }
1044 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
1045 struct ide_driver
*driver
) { ; }
1046 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1050 /* enter/exit functions */
1051 IDE_DBG_FUNC
= (1 << 0),
1052 /* sense key/asc handling */
1053 IDE_DBG_SENSE
= (1 << 1),
1054 /* packet commands handling */
1055 IDE_DBG_PC
= (1 << 2),
1056 /* request handling */
1057 IDE_DBG_RQ
= (1 << 3),
1058 /* driver probing/setup */
1059 IDE_DBG_PROBE
= (1 << 4),
1062 /* DRV_NAME has to be defined in the driver before using the macro below */
1063 #define __ide_debug_log(lvl, fmt, args...) \
1065 if (unlikely(drive->debug_mask & lvl)) \
1066 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1070 * Power Management state machine (rq->pm->pm_step).
1072 * For each step, the core calls ide_start_power_step() first.
1074 * - ide_stopped : In this case, the core calls us back again unless
1075 * step have been set to ide_power_state_completed.
1076 * - ide_started : In this case, the channel is left busy until an
1077 * async event (interrupt) occurs.
1078 * Typically, ide_start_power_step() will issue a taskfile request with
1081 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1082 * with the error code if any. This routine should update the step value
1083 * and return. It should not start a new request. The core will call
1084 * ide_start_power_step() for the new step value, unless step have been
1085 * set to IDE_PM_COMPLETED.
1088 IDE_PM_START_SUSPEND
,
1089 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1092 IDE_PM_START_RESUME
,
1093 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1100 int generic_ide_suspend(struct device
*, pm_message_t
);
1101 int generic_ide_resume(struct device
*);
1103 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1104 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1105 void ide_complete_pm_request(ide_drive_t
*, struct request
*);
1106 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1109 * Subdrivers support.
1111 * The gendriver.owner field should be set to the module owner of this driver.
1112 * The gendriver.name field should be set to the name of this driver
1115 const char *version
;
1116 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1117 int (*end_request
)(ide_drive_t
*, int, int);
1118 struct device_driver gen_driver
;
1119 int (*probe
)(ide_drive_t
*);
1120 void (*remove
)(ide_drive_t
*);
1121 void (*resume
)(ide_drive_t
*);
1122 void (*shutdown
)(ide_drive_t
*);
1123 #ifdef CONFIG_IDE_PROC_FS
1124 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1125 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1129 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1131 int ide_device_get(ide_drive_t
*);
1132 void ide_device_put(ide_drive_t
*);
1134 struct ide_ioctl_devset
{
1135 unsigned int get_ioctl
;
1136 unsigned int set_ioctl
;
1137 const struct ide_devset
*setting
;
1140 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1141 unsigned long, const struct ide_ioctl_devset
*);
1143 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1145 extern int ide_vlb_clk
;
1146 extern int ide_pci_clk
;
1148 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1149 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1150 int uptodate
, int nr_sectors
);
1152 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1154 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1157 void ide_execute_pkt_cmd(ide_drive_t
*);
1159 void ide_pad_transfer(ide_drive_t
*, int, int);
1161 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1163 void ide_fix_driveid(u16
*);
1165 extern void ide_fixstring(u8
*, const int, const int);
1167 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1169 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1171 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1173 extern int ide_devset_execute(ide_drive_t
*drive
,
1174 const struct ide_devset
*setting
, int arg
);
1176 extern void ide_do_drive_cmd(ide_drive_t
*, struct request
*);
1178 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1180 void ide_tf_dump(const char *, struct ide_taskfile
*);
1182 void ide_exec_command(ide_hwif_t
*, u8
);
1183 u8
ide_read_status(ide_hwif_t
*);
1184 u8
ide_read_altstatus(ide_hwif_t
*);
1186 void ide_set_irq(ide_hwif_t
*, int);
1188 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1189 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1191 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1192 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1194 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1196 extern void SELECT_DRIVE(ide_drive_t
*);
1197 void SELECT_MASK(ide_drive_t
*, int);
1199 u8
ide_read_error(ide_drive_t
*);
1200 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1202 extern int drive_is_ready(ide_drive_t
*);
1204 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
1206 int ide_check_atapi_device(ide_drive_t
*, const char *);
1208 void ide_init_pc(struct ide_atapi_pc
*);
1210 /* Disk head parking */
1211 extern wait_queue_head_t ide_park_wq
;
1212 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1214 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1215 const char *buf
, size_t len
);
1218 * Special requests for ide-tape block device strategy routine.
1220 * In order to service a character device command, we add special requests to
1221 * the tail of our block device request queue and wait for their completion.
1224 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1225 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1226 REQ_IDETAPE_READ
= (1 << 2),
1227 REQ_IDETAPE_WRITE
= (1 << 3),
1230 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1232 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1233 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1234 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1235 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1236 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1238 int ide_cd_expiry(ide_drive_t
*);
1240 int ide_cd_get_xferlen(struct request
*);
1242 ide_startstop_t
ide_issue_pc(ide_drive_t
*);
1244 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1246 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1248 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1249 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1251 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1253 extern int ide_driveid_update(ide_drive_t
*);
1254 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1255 extern u8
eighty_ninty_three (ide_drive_t
*);
1256 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1258 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1260 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1262 extern void ide_timer_expiry(unsigned long);
1263 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1264 extern void do_ide_request(struct request_queue
*);
1266 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1268 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1269 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1270 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1272 #define ide_pci_register_driver(d) pci_register_driver(d)
1275 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1277 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1282 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int,
1283 hw_regs_t
*, hw_regs_t
**);
1284 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1286 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1287 int ide_pci_set_master(struct pci_dev
*, const char *);
1288 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1289 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1290 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1292 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1293 const struct ide_port_info
*d
)
1299 struct ide_pci_enablebit
{
1300 u8 reg
; /* byte pci reg holding the enable-bit */
1301 u8 mask
; /* mask to isolate the enable-bit */
1302 u8 val
; /* value of masked reg when "enabled" */
1306 /* Uses ISA control ports not PCI ones. */
1307 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1308 /* single port device */
1309 IDE_HFLAG_SINGLE
= (1 << 1),
1310 /* don't use legacy PIO blacklist */
1311 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1312 /* set for the second port of QD65xx */
1313 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1314 /* use PIO8/9 for prefetch off/on */
1315 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1316 /* use PIO6/7 for fast-devsel off/on */
1317 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1318 /* use 100-102 and 200-202 PIO values to set DMA modes */
1319 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1321 * keep DMA setting when programming PIO mode, may be used only
1322 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1324 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1325 /* program host for the transfer mode after programming device */
1326 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1327 /* don't program host/device for the transfer mode ("smart" hosts) */
1328 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1329 /* trust BIOS for programming chipset/device for DMA */
1330 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1331 /* host is CS5510/CS5520 */
1332 IDE_HFLAG_CS5520
= (1 << 11),
1333 /* ATAPI DMA is unsupported */
1334 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1335 /* set if host is a "non-bootable" controller */
1336 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1337 /* host doesn't support DMA */
1338 IDE_HFLAG_NO_DMA
= (1 << 14),
1339 /* check if host is PCI IDE device before allowing DMA */
1340 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1341 /* host uses MMIO */
1342 IDE_HFLAG_MMIO
= (1 << 16),
1344 IDE_HFLAG_NO_LBA48
= (1 << 17),
1346 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1347 /* data FIFO is cleared by an error */
1348 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1349 /* serialize ports */
1350 IDE_HFLAG_SERIALIZE
= (1 << 20),
1351 /* use legacy IRQs */
1352 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1353 /* force use of legacy IRQs */
1354 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1355 /* host is TRM290 */
1356 IDE_HFLAG_TRM290
= (1 << 23),
1357 /* use 32-bit I/O ops */
1358 IDE_HFLAG_IO_32BIT
= (1 << 24),
1360 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1361 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1362 /* serialize ports if DMA is possible (for sl82c105) */
1363 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1364 /* force host out of "simplex" mode */
1365 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1366 /* DSC overlap is unsupported */
1367 IDE_HFLAG_NO_DSC
= (1 << 29),
1368 /* never use 32-bit I/O ops */
1369 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1370 /* never unmask IRQs */
1371 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1374 #ifdef CONFIG_BLK_DEV_OFFBOARD
1375 # define IDE_HFLAG_OFF_BOARD 0
1377 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1380 struct ide_port_info
{
1382 unsigned int (*init_chipset
)(struct pci_dev
*);
1383 void (*init_iops
)(ide_hwif_t
*);
1384 void (*init_hwif
)(ide_hwif_t
*);
1385 int (*init_dma
)(ide_hwif_t
*,
1386 const struct ide_port_info
*);
1388 const struct ide_tp_ops
*tp_ops
;
1389 const struct ide_port_ops
*port_ops
;
1390 const struct ide_dma_ops
*dma_ops
;
1392 struct ide_pci_enablebit enablebits
[2];
1394 hwif_chipset_t chipset
;
1396 u16 max_sectors
; /* if < than the default one */
1405 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1406 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1407 const struct ide_port_info
*, void *);
1408 void ide_pci_remove(struct pci_dev
*);
1411 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1412 int ide_pci_resume(struct pci_dev
*);
1414 #define ide_pci_suspend NULL
1415 #define ide_pci_resume NULL
1418 void ide_map_sg(ide_drive_t
*, struct request
*);
1419 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1421 #define BAD_DMA_DRIVE 0
1422 #define GOOD_DMA_DRIVE 1
1424 struct drive_list_entry
{
1425 const char *id_model
;
1426 const char *id_firmware
;
1429 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1431 #ifdef CONFIG_BLK_DEV_IDEDMA
1432 int ide_dma_good_drive(ide_drive_t
*);
1433 int __ide_dma_bad_drive(ide_drive_t
*);
1434 int ide_id_dma_bug(ide_drive_t
*);
1436 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1438 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1440 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1443 void ide_dma_off_quietly(ide_drive_t
*);
1444 void ide_dma_off(ide_drive_t
*);
1445 void ide_dma_on(ide_drive_t
*);
1446 int ide_set_dma(ide_drive_t
*);
1447 void ide_check_dma_crc(ide_drive_t
*);
1448 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1450 int ide_allocate_dma_engine(ide_hwif_t
*);
1451 void ide_release_dma_engine(ide_hwif_t
*);
1453 int ide_build_sglist(ide_drive_t
*, struct request
*);
1454 void ide_destroy_dmatable(ide_drive_t
*);
1456 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1457 int config_drive_for_dma(ide_drive_t
*);
1458 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1459 void ide_dma_host_set(ide_drive_t
*, int);
1460 extern int ide_dma_setup(ide_drive_t
*);
1461 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1462 extern void ide_dma_start(ide_drive_t
*);
1463 int ide_dma_end(ide_drive_t
*);
1464 int ide_dma_test_irq(ide_drive_t
*);
1465 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1466 extern const struct ide_dma_ops sff_dma_ops
;
1468 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1469 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1471 void ide_dma_lost_irq(ide_drive_t
*);
1472 void ide_dma_timeout(ide_drive_t
*);
1475 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1476 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1477 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1478 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1479 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1480 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1481 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1482 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1483 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1484 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1485 #endif /* CONFIG_BLK_DEV_IDEDMA */
1487 #ifdef CONFIG_BLK_DEV_IDEACPI
1488 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1489 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1490 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1491 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1492 void ide_acpi_port_init_devices(ide_hwif_t
*);
1493 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1495 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1496 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1497 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1498 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1499 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1500 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1503 void ide_register_region(struct gendisk
*);
1504 void ide_unregister_region(struct gendisk
*);
1506 void ide_undecoded_slave(ide_drive_t
*);
1508 void ide_port_apply_params(ide_hwif_t
*);
1509 int ide_sysfs_register_port(ide_hwif_t
*);
1511 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1512 void ide_host_free(struct ide_host
*);
1513 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1515 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1516 struct ide_host
**);
1517 void ide_host_remove(struct ide_host
*);
1518 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1519 void ide_port_unregister_devices(ide_hwif_t
*);
1520 void ide_port_scan(ide_hwif_t
*);
1522 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1524 return hwif
->hwif_data
;
1527 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1529 hwif
->hwif_data
= data
;
1532 const char *ide_xfer_verbose(u8 mode
);
1533 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1534 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1536 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1537 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1542 u16 act8b
; /* t2 for 8-bit io */
1543 u16 rec8b
; /* t2i for 8-bit io */
1544 u16 cyc8b
; /* t0 for 8-bit io */
1545 u16 active
; /* t2 or tD */
1546 u16 recover
; /* t2i or tK */
1548 u16 udma
; /* t2CYCTYP/2 */
1552 IDE_TIMING_SETUP
= (1 << 0),
1553 IDE_TIMING_ACT8B
= (1 << 1),
1554 IDE_TIMING_REC8B
= (1 << 2),
1555 IDE_TIMING_CYC8B
= (1 << 3),
1556 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1558 IDE_TIMING_ACTIVE
= (1 << 4),
1559 IDE_TIMING_RECOVER
= (1 << 5),
1560 IDE_TIMING_CYCLE
= (1 << 6),
1561 IDE_TIMING_UDMA
= (1 << 7),
1562 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1563 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1564 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1567 struct ide_timing
*ide_timing_find_mode(u8
);
1568 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1569 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1570 struct ide_timing
*, unsigned int);
1571 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1573 int ide_scan_pio_blacklist(char *);
1575 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1577 int ide_set_pio_mode(ide_drive_t
*, u8
);
1578 int ide_set_dma_mode(ide_drive_t
*, u8
);
1580 void ide_set_pio(ide_drive_t
*, u8
);
1582 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1584 ide_set_pio(drive
, 255);
1587 char *ide_media_string(ide_drive_t
*);
1589 extern struct device_attribute ide_dev_attrs
[];
1590 extern struct bus_type ide_bus_type
;
1591 extern struct class *ide_port_class
;
1593 static inline void ide_dump_identify(u8
*id
)
1595 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1598 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1600 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1603 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1605 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1607 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1610 #define ide_port_for_each_dev(i, dev, port) \
1611 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1613 #define ide_host_for_each_port(i, port, host) \
1614 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)