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 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
40 #define IDE_NO_IRQ (-1)
42 typedef unsigned char byte
; /* used everywhere */
45 * Probably not wise to fiddle with these
47 #define ERROR_MAX 8 /* Max read/write errors per sector */
48 #define ERROR_RESET 3 /* Reset controller every 4th retry */
49 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
51 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
52 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
55 * Definitions for accessing IDE controller registers
57 #define IDE_NR_PORTS (10)
60 unsigned long data_addr
;
63 unsigned long error_addr
; /* read: error */
64 unsigned long feature_addr
; /* write: feature */
67 unsigned long nsect_addr
;
68 unsigned long lbal_addr
;
69 unsigned long lbam_addr
;
70 unsigned long lbah_addr
;
72 unsigned long device_addr
;
75 unsigned long status_addr
; /* read: status */
76 unsigned long command_addr
; /* write: command */
79 unsigned long ctl_addr
;
81 unsigned long irq_addr
;
84 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
86 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
87 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
88 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
89 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
91 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
93 #define SATA_NR_PORTS (3) /* 16 possible ?? */
95 #define SATA_STATUS_OFFSET (0)
96 #define SATA_ERROR_OFFSET (1)
97 #define SATA_CONTROL_OFFSET (2)
100 * Our Physical Region Descriptor (PRD) table should be large enough
101 * to handle the biggest I/O request we are likely to see. Since requests
102 * can have no more than 256 sectors, and since the typical blocksize is
103 * two or more sectors, we could get by with a limit of 128 entries here for
104 * the usual worst case. Most requests seem to include some contiguous blocks,
105 * further reducing the number of table entries required.
107 * The driver reverts to PIO mode for individual requests that exceed
108 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
109 * 100% of all crazy scenarios here is not necessary.
111 * As it turns out though, we must allocate a full 4KB page for this,
112 * so the two PRD tables (ide0 & ide1) will each get half of that,
113 * allowing each to have about 256 entries (8 bytes each) from this.
116 #define PRD_ENTRIES 256
119 * Some more useful definitions
121 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
122 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
123 #define SECTOR_SIZE 512
125 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
128 * Timeouts for various operations:
131 /* spec allows up to 20ms */
132 WAIT_DRQ
= HZ
/ 10, /* 100ms */
133 /* some laptops are very slow */
134 WAIT_READY
= 5 * HZ
, /* 5s */
135 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
136 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
137 /* worst case when spinning up */
138 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
139 /* maximum wait for an IRQ to happen */
140 WAIT_CMD
= 10 * HZ
, /* 10s */
141 /* Some drives require a longer IRQ timeout. */
142 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
144 * Some drives (for example, Seagate STT3401A Travan) require a very
145 * long timeout, because they don't return an interrupt or clear their
146 * BSY bit until after the command completes (even retension commands).
148 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
149 /* minimum sleep time */
150 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
154 * Op codes for special requests to be handled by ide_special_rq().
155 * Values should be in the range of 0x20 to 0x3f.
157 #define REQ_DRIVE_RESET 0x20
158 #define REQ_DEVSET_EXEC 0x21
159 #define REQ_PARK_HEADS 0x22
160 #define REQ_UNPARK_HEADS 0x23
163 * Check for an interrupt and acknowledge the interrupt status
166 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
169 * hwif_chipset_t is used to keep track of the specific hardware
170 * chipset used by each IDE interface, if known.
172 enum { ide_unknown
, ide_generic
, ide_pci
,
173 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
174 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
175 ide_rz1000
, ide_trm290
,
176 ide_cmd646
, ide_cy82c693
, ide_4drives
,
178 ide_au1xxx
, ide_palm3710
181 typedef u8 hwif_chipset_t
;
184 * Structure to hold all information about the location of this port
186 typedef struct hw_regs_s
{
188 struct ide_io_ports io_ports
;
189 unsigned long io_ports_array
[IDE_NR_PORTS
];
192 int irq
; /* our irq number */
193 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
194 hwif_chipset_t chipset
;
195 struct device
*dev
, *parent
;
196 unsigned long config
;
199 void ide_init_port_data(struct hwif_s
*, unsigned int);
200 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
202 static inline void ide_std_init_ports(hw_regs_t
*hw
,
203 unsigned long io_addr
,
204 unsigned long ctl_addr
)
208 for (i
= 0; i
<= 7; i
++)
209 hw
->io_ports_array
[i
] = io_addr
++;
211 hw
->io_ports
.ctl_addr
= ctl_addr
;
214 /* for IDE PCI controllers in legacy mode, temporary */
215 static inline int __ide_default_irq(unsigned long base
)
219 case 0x1f0: return isa_irq_to_vector(14);
220 case 0x170: return isa_irq_to_vector(15);
222 case 0x1f0: return 14;
223 case 0x170: return 15;
229 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
230 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
231 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
234 #include <asm-generic/ide_iops.h>
239 /* Currently only m68k, apus and m8xx need it */
240 #ifndef IDE_ARCH_ACK_INTR
241 # define ide_ack_intr(hwif) (1)
244 /* Currently only Atari needs it */
245 #ifndef IDE_ARCH_LOCK
246 # define ide_release_lock() do {} while (0)
247 # define ide_get_lock(hdlr, data) do {} while (0)
248 #endif /* IDE_ARCH_LOCK */
251 * Now for the data we need to maintain per-drive: ide_drive_t
254 #define ide_scsi 0x21
255 #define ide_disk 0x20
256 #define ide_optical 0x7
257 #define ide_cdrom 0x5
259 #define ide_floppy 0x0
262 * Special Driver Flags
264 * set_geometry : respecify drive geometry
265 * recalibrate : seek to cyl 0
266 * set_multmode : set multmode count
272 unsigned set_geometry
: 1;
273 unsigned recalibrate
: 1;
274 unsigned set_multmode
: 1;
275 unsigned reserved
: 5;
280 * Status returned from various ide_ functions
283 ide_stopped
, /* no drive operation was started */
284 ide_started
, /* a drive operation was started, handler was set */
288 IDE_TFLAG_LBA48
= (1 << 0),
289 IDE_TFLAG_FLAGGED
= (1 << 2),
290 IDE_TFLAG_OUT_DATA
= (1 << 3),
291 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
292 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
293 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
294 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
295 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
296 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
297 IDE_TFLAG_OUT_HOB_NSECT
|
298 IDE_TFLAG_OUT_HOB_LBAL
|
299 IDE_TFLAG_OUT_HOB_LBAM
|
300 IDE_TFLAG_OUT_HOB_LBAH
,
301 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
302 IDE_TFLAG_OUT_NSECT
= (1 << 10),
303 IDE_TFLAG_OUT_LBAL
= (1 << 11),
304 IDE_TFLAG_OUT_LBAM
= (1 << 12),
305 IDE_TFLAG_OUT_LBAH
= (1 << 13),
306 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
307 IDE_TFLAG_OUT_NSECT
|
311 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
312 IDE_TFLAG_WRITE
= (1 << 15),
313 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
314 IDE_TFLAG_IN_DATA
= (1 << 17),
315 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
316 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
317 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
318 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
319 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
320 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
321 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
322 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
323 IDE_TFLAG_IN_HOB_LBAM
|
324 IDE_TFLAG_IN_HOB_LBAH
,
325 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
326 IDE_TFLAG_IN_HOB_NSECT
|
327 IDE_TFLAG_IN_HOB_LBA
,
328 IDE_TFLAG_IN_FEATURE
= (1 << 1),
329 IDE_TFLAG_IN_NSECT
= (1 << 25),
330 IDE_TFLAG_IN_LBAL
= (1 << 26),
331 IDE_TFLAG_IN_LBAM
= (1 << 27),
332 IDE_TFLAG_IN_LBAH
= (1 << 28),
333 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
336 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
338 IDE_TFLAG_IN_DEVICE
= (1 << 29),
339 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
341 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
343 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
345 /* force 16-bit I/O operations */
346 IDE_TFLAG_IO_16BIT
= (1 << 30),
347 /* ide_task_t was allocated using kmalloc() */
348 IDE_TFLAG_DYN
= (1 << 31),
351 struct ide_taskfile
{
352 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
354 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
360 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
363 u8 error
; /* read: error */
364 u8 feature
; /* write: feature */
367 u8 nsect
; /* 8: number of sectors */
368 u8 lbal
; /* 9: LBA low */
369 u8 lbam
; /* 10: LBA mid */
370 u8 lbah
; /* 11: LBA high */
372 u8 device
; /* 12: device select */
375 u8 status
; /* read: status */
376 u8 command
; /* write: command */
380 typedef struct ide_task_s
{
382 struct ide_taskfile tf
;
387 struct request
*rq
; /* copy of request */
388 void *special
; /* valid_t generally */
391 /* ATAPI packet command flags */
393 /* set when an error is considered normal - no retry (ide-tape) */
394 PC_FLAG_ABORT
= (1 << 0),
395 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
396 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
397 PC_FLAG_DMA_OK
= (1 << 3),
398 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
399 PC_FLAG_DMA_ERROR
= (1 << 5),
400 PC_FLAG_WRITING
= (1 << 6),
401 /* command timed out */
402 PC_FLAG_TIMEDOUT
= (1 << 7),
406 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
407 * This is used for several packet commands (not for READ/WRITE commands).
409 #define IDE_PC_BUFFER_SIZE 256
411 struct ide_atapi_pc
{
412 /* actual packet bytes */
414 /* incremented on each retry */
418 /* bytes to transfer */
420 /* bytes actually transferred */
425 /* current buffer position */
428 /* missing/available data on the current buffer */
431 /* the corresponding request */
437 * those are more or less driver-specific and some of them are subject
438 * to change/removal later.
440 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
443 struct idetape_bh
*bh
;
446 /* idescsi only for now */
447 struct scatterlist
*sg
;
450 struct scsi_cmnd
*scsi_cmd
;
451 void (*done
) (struct scsi_cmnd
*);
453 unsigned long timeout
;
459 #ifdef CONFIG_BLK_DEV_IDEACPI
460 struct ide_acpi_drive_link
;
461 struct ide_acpi_hwif_link
;
464 /* ATAPI device flags */
466 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
467 IDE_AFLAG_MEDIA_CHANGED
= (1 << 1),
468 /* Drive cannot lock the door. */
469 IDE_AFLAG_NO_DOORLOCK
= (1 << 2),
472 /* Drive cannot eject the disc. */
473 IDE_AFLAG_NO_EJECT
= (1 << 3),
474 /* Drive is a pre ATAPI 1.2 drive. */
475 IDE_AFLAG_PRE_ATAPI12
= (1 << 4),
476 /* TOC addresses are in BCD. */
477 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 5),
478 /* TOC track numbers are in BCD. */
479 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 6),
481 * Drive does not provide data in multiples of SECTOR_SIZE
482 * when more than one interrupt is needed.
484 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 7),
485 /* Seeking in progress. */
486 IDE_AFLAG_SEEKING
= (1 << 8),
487 /* Saved TOC information is current. */
488 IDE_AFLAG_TOC_VALID
= (1 << 9),
489 /* We think that the drive door is locked. */
490 IDE_AFLAG_DOOR_LOCKED
= (1 << 10),
491 /* SET_CD_SPEED command is unsupported. */
492 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 11),
493 IDE_AFLAG_VERTOS_300_SSD
= (1 << 12),
494 IDE_AFLAG_VERTOS_600_ESD
= (1 << 13),
495 IDE_AFLAG_SANYO_3CD
= (1 << 14),
496 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 15),
497 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 16),
498 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 17),
501 /* Format in progress */
502 IDE_AFLAG_FORMAT_IN_PROGRESS
= (1 << 18),
503 /* Avoid commands not supported in Clik drive */
504 IDE_AFLAG_CLIK_DRIVE
= (1 << 19),
505 /* Requires BH algorithm for packets */
506 IDE_AFLAG_ZIP_DRIVE
= (1 << 20),
508 IDE_AFLAG_WP
= (1 << 21),
509 /* Supports format progress report */
510 IDE_AFLAG_SRFP
= (1 << 22),
513 IDE_AFLAG_IGNORE_DSC
= (1 << 23),
514 /* 0 When the tape position is unknown */
515 IDE_AFLAG_ADDRESS_VALID
= (1 << 24),
516 /* Device already opened */
517 IDE_AFLAG_BUSY
= (1 << 25),
518 /* Attempt to auto-detect the current user block size */
519 IDE_AFLAG_DETECT_BS
= (1 << 26),
520 /* Currently on a filemark */
521 IDE_AFLAG_FILEMARK
= (1 << 27),
522 /* 0 = no tape is loaded, so we don't rewind after ejecting */
523 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 28),
525 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 29),
530 /* restore settings after device reset */
531 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
532 /* device is using DMA for read/write */
533 IDE_DFLAG_USING_DMA
= (1 << 1),
534 /* okay to unmask other IRQs */
535 IDE_DFLAG_UNMASK
= (1 << 2),
536 /* don't attempt flushes */
537 IDE_DFLAG_NOFLUSH
= (1 << 3),
539 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
540 /* give potential excess bandwidth */
541 IDE_DFLAG_NICE1
= (1 << 5),
542 /* device is physically present */
543 IDE_DFLAG_PRESENT
= (1 << 6),
544 /* device ejected hint */
545 IDE_DFLAG_DEAD
= (1 << 7),
546 /* id read from device (synthetic if not set) */
547 IDE_DFLAG_ID_READ
= (1 << 8),
548 IDE_DFLAG_NOPROBE
= (1 << 9),
549 /* need to do check_media_change() */
550 IDE_DFLAG_REMOVABLE
= (1 << 10),
551 /* needed for removable devices */
552 IDE_DFLAG_ATTACH
= (1 << 11),
553 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
554 /* disallow setting unmask bit */
555 IDE_DFLAG_NO_UNMASK
= (1 << 13),
556 /* disallow enabling 32-bit I/O */
557 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
558 /* for removable only: door lock/unlock works */
559 IDE_DFLAG_DOORLOCKING
= (1 << 15),
561 IDE_DFLAG_NODMA
= (1 << 16),
562 /* powermanagment told us not to do anything, so sleep nicely */
563 IDE_DFLAG_BLOCKED
= (1 << 17),
564 /* ide-scsi emulation */
565 IDE_DFLAG_SCSI
= (1 << 18),
566 /* sleeping & sleep field valid */
567 IDE_DFLAG_SLEEPING
= (1 << 19),
568 IDE_DFLAG_POST_RESET
= (1 << 20),
569 IDE_DFLAG_UDMA33_WARNED
= (1 << 21),
570 IDE_DFLAG_LBA48
= (1 << 22),
571 /* status of write cache */
572 IDE_DFLAG_WCACHE
= (1 << 23),
573 /* used for ignoring ATA_DF */
574 IDE_DFLAG_NOWERR
= (1 << 24),
575 /* retrying in PIO */
576 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 25),
577 IDE_DFLAG_LBA
= (1 << 26),
578 /* don't unload heads */
579 IDE_DFLAG_NO_UNLOAD
= (1 << 27),
580 /* heads unloaded, please don't reset port */
581 IDE_DFLAG_PARKED
= (1 << 28)
585 char name
[4]; /* drive name, such as "hda" */
586 char driver_req
[10]; /* requests specific driver */
588 struct request_queue
*queue
; /* request queue */
590 struct request
*rq
; /* current request */
591 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
592 void *driver_data
; /* extra driver data */
593 u16
*id
; /* identification info */
594 #ifdef CONFIG_IDE_PROC_FS
595 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
596 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
598 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
600 unsigned long dev_flags
;
602 unsigned long sleep
; /* sleep until this time */
603 unsigned long service_start
; /* time we started last request */
604 unsigned long service_time
; /* service time of last request */
605 unsigned long timeout
; /* max time to wait for irq */
607 special_t special
; /* special action flags */
609 u8 select
; /* basic drive/head select reg value */
610 u8 retry_pio
; /* retrying dma capable host in pio */
611 u8 waiting_for_dma
; /* dma currently in progress */
612 u8 dma
; /* atapi dma flag */
614 u8 quirk_list
; /* considered quirky, set for a specific host */
615 u8 init_speed
; /* transfer rate set at boot */
616 u8 current_speed
; /* current transfer rate set */
617 u8 desired_speed
; /* desired transfer rate set */
618 u8 dn
; /* now wide spread use */
619 u8 acoustic
; /* acoustic management */
620 u8 media
; /* disk, cdrom, tape, floppy, ... */
621 u8 ready_stat
; /* min status value for drive ready */
622 u8 mult_count
; /* current multiple sector setting */
623 u8 mult_req
; /* requested multiple sector setting */
624 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
625 u8 bad_wstat
; /* used for ignoring ATA_DF */
626 u8 head
; /* "real" number of heads */
627 u8 sect
; /* "real" sectors per track */
628 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
629 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
631 /* delay this long before sending packet command */
634 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
635 unsigned int cyl
; /* "real" number of cyls */
636 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
637 unsigned int failures
; /* current failure count */
638 unsigned int max_failures
; /* maximum allowed failure count */
639 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
641 u64 capacity64
; /* total number of sectors */
643 int lun
; /* logical unit */
644 int crc_count
; /* crc counter to reduce drive speed */
646 unsigned long debug_mask
; /* debugging levels switch */
648 #ifdef CONFIG_BLK_DEV_IDEACPI
649 struct ide_acpi_drive_link
*acpidata
;
651 struct list_head list
;
652 struct device gendev
;
653 struct completion gendev_rel_comp
; /* to deal with device release() */
655 /* current packet command */
656 struct ide_atapi_pc
*pc
;
658 /* callback for packet commands */
659 void (*pc_callback
)(struct ide_drive_s
*, int);
661 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
662 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
665 unsigned long atapi_flags
;
667 struct ide_atapi_pc request_sense_pc
;
668 struct request request_sense_rq
;
671 typedef struct ide_drive_s ide_drive_t
;
673 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
675 #define to_ide_drv(obj, cont_type) \
676 container_of(obj, struct cont_type, kref)
678 #define ide_drv_g(disk, cont_type) \
679 container_of((disk)->private_data, struct cont_type, driver)
681 struct ide_port_info
;
684 void (*exec_command
)(struct hwif_s
*, u8
);
685 u8 (*read_status
)(struct hwif_s
*);
686 u8 (*read_altstatus
)(struct hwif_s
*);
687 u8 (*read_sff_dma_status
)(struct hwif_s
*);
689 void (*set_irq
)(struct hwif_s
*, int);
691 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
692 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
694 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
696 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
700 extern const struct ide_tp_ops default_tp_ops
;
703 * struct ide_port_ops - IDE port operations
705 * @init_dev: host specific initialization of a device
706 * @set_pio_mode: routine to program host for PIO mode
707 * @set_dma_mode: routine to program host for DMA mode
708 * @selectproc: tweaks hardware to select drive
709 * @reset_poll: chipset polling based on hba specifics
710 * @pre_reset: chipset specific changes to default for device-hba resets
711 * @resetproc: routine to reset controller after a disk reset
712 * @maskproc: special host masking for drive selection
713 * @quirkproc: check host's drive quirk list
714 * @clear_irq: clear IRQ
716 * @mdma_filter: filter MDMA modes
717 * @udma_filter: filter UDMA modes
719 * @cable_detect: detect cable type
721 struct ide_port_ops
{
722 void (*init_dev
)(ide_drive_t
*);
723 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
724 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
725 void (*selectproc
)(ide_drive_t
*);
726 int (*reset_poll
)(ide_drive_t
*);
727 void (*pre_reset
)(ide_drive_t
*);
728 void (*resetproc
)(ide_drive_t
*);
729 void (*maskproc
)(ide_drive_t
*, int);
730 void (*quirkproc
)(ide_drive_t
*);
731 void (*clear_irq
)(ide_drive_t
*);
733 u8 (*mdma_filter
)(ide_drive_t
*);
734 u8 (*udma_filter
)(ide_drive_t
*);
736 u8 (*cable_detect
)(struct hwif_s
*);
740 void (*dma_host_set
)(struct ide_drive_s
*, int);
741 int (*dma_setup
)(struct ide_drive_s
*);
742 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
743 void (*dma_start
)(struct ide_drive_s
*);
744 int (*dma_end
)(struct ide_drive_s
*);
745 int (*dma_test_irq
)(struct ide_drive_s
*);
746 void (*dma_lost_irq
)(struct ide_drive_s
*);
747 void (*dma_timeout
)(struct ide_drive_s
*);
752 typedef struct hwif_s
{
753 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
754 struct hwif_s
*mate
; /* other hwif from same PCI chip */
755 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
756 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
758 struct ide_host
*host
;
760 char name
[6]; /* name of interface, eg. "ide0" */
762 struct ide_io_ports io_ports
;
764 unsigned long sata_scr
[SATA_NR_PORTS
];
766 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
768 u8 major
; /* our major number */
769 u8 index
; /* 0 for ide0; 1 for ide1; ... */
770 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
780 u8 cbl
; /* cable type */
782 hwif_chipset_t chipset
; /* sub-module for tuning.. */
786 ide_ack_intr_t
*ack_intr
;
788 void (*rw_disk
)(ide_drive_t
*, struct request
*);
790 const struct ide_tp_ops
*tp_ops
;
791 const struct ide_port_ops
*port_ops
;
792 const struct ide_dma_ops
*dma_ops
;
794 /* dma physical region descriptor table (cpu view) */
795 unsigned int *dmatable_cpu
;
796 /* dma physical region descriptor table (dma view) */
797 dma_addr_t dmatable_dma
;
799 /* maximum number of PRD table entries */
801 /* PRD entry size in bytes */
804 /* Scatter-gather list used to build the above */
805 struct scatterlist
*sg_table
;
806 int sg_max_nents
; /* Maximum number of entries in it */
807 int sg_nents
; /* Current number of entries in it */
808 int sg_dma_direction
; /* dma transfer direction */
810 /* data phase of the active command (currently only valid for PIO/DMA) */
813 struct ide_task_s task
; /* current command */
817 struct scatterlist
*cursg
;
818 unsigned int cursg_ofs
;
820 int rqsize
; /* max sectors per request */
821 int irq
; /* our irq number */
823 unsigned long dma_base
; /* base addr for dma ports */
825 unsigned long config_data
; /* for use by chipset-specific code */
826 unsigned long select_data
; /* for use by chipset-specific code */
828 unsigned long extra_base
; /* extra addr for dma ports */
829 unsigned extra_ports
; /* number of extra dma ports */
831 unsigned present
: 1; /* this interface exists */
832 unsigned serialized
: 1; /* serialized all channel operation */
833 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
834 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
836 struct device gendev
;
837 struct device
*portdev
;
839 struct completion gendev_rel_comp
; /* To deal with device release() */
841 void *hwif_data
; /* extra hwif data */
843 #ifdef CONFIG_BLK_DEV_IDEACPI
844 struct ide_acpi_hwif_link
*acpidata
;
846 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
848 #define MAX_HOST_PORTS 4
851 ide_hwif_t
*ports
[MAX_HOST_PORTS
];
852 unsigned int n_ports
;
853 struct device
*dev
[2];
854 unsigned int (*init_chipset
)(struct pci_dev
*);
855 unsigned long host_flags
;
860 * internal ide interrupt handler type
862 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
863 typedef int (ide_expiry_t
)(ide_drive_t
*);
865 /* used by ide-cd, ide-floppy, etc. */
866 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
868 typedef struct hwgroup_s
{
869 /* irq handler, if active */
870 ide_startstop_t (*handler
)(ide_drive_t
*);
872 /* BOOL: protects all fields below */
874 /* BOOL: wake us up on timer expiry */
875 unsigned int sleeping
: 1;
876 /* BOOL: polling active & poll_timeout field valid */
877 unsigned int polling
: 1;
881 /* ptr to current hwif in linked-list */
884 /* current request */
888 struct timer_list timer
;
889 /* timeout value during long polls */
890 unsigned long poll_timeout
;
891 /* queried upon timeouts */
892 int (*expiry
)(ide_drive_t
*);
898 typedef struct ide_driver_s ide_driver_t
;
900 extern struct mutex ide_setting_mtx
;
903 * configurable drive settings
906 #define DS_SYNC (1 << 0)
909 int (*get
)(ide_drive_t
*);
910 int (*set
)(ide_drive_t
*, int);
914 #define __DEVSET(_flags, _get, _set) { \
920 #define ide_devset_get(name, field) \
921 static int get_##name(ide_drive_t *drive) \
923 return drive->field; \
926 #define ide_devset_set(name, field) \
927 static int set_##name(ide_drive_t *drive, int arg) \
929 drive->field = arg; \
933 #define ide_devset_get_flag(name, flag) \
934 static int get_##name(ide_drive_t *drive) \
936 return !!(drive->dev_flags & flag); \
939 #define ide_devset_set_flag(name, flag) \
940 static int set_##name(ide_drive_t *drive, int arg) \
943 drive->dev_flags |= flag; \
945 drive->dev_flags &= ~flag; \
949 #define __IDE_DEVSET(_name, _flags, _get, _set) \
950 const struct ide_devset ide_devset_##_name = \
951 __DEVSET(_flags, _get, _set)
953 #define IDE_DEVSET(_name, _flags, _get, _set) \
954 static __IDE_DEVSET(_name, _flags, _get, _set)
956 #define ide_devset_rw(_name, _func) \
957 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
959 #define ide_devset_w(_name, _func) \
960 IDE_DEVSET(_name, 0, NULL, set_##_func)
962 #define ide_ext_devset_rw(_name, _func) \
963 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
965 #define ide_ext_devset_rw_sync(_name, _func) \
966 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
968 #define ide_decl_devset(_name) \
969 extern const struct ide_devset ide_devset_##_name
971 ide_decl_devset(io_32bit
);
972 ide_decl_devset(keepsettings
);
973 ide_decl_devset(pio_mode
);
974 ide_decl_devset(unmaskirq
);
975 ide_decl_devset(using_dma
);
977 #ifdef CONFIG_IDE_PROC_FS
979 * /proc/ide interface
982 #define ide_devset_rw_field(_name, _field) \
983 ide_devset_get(_name, _field); \
984 ide_devset_set(_name, _field); \
985 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
987 #define ide_devset_rw_flag(_name, _field) \
988 ide_devset_get_flag(_name, _field); \
989 ide_devset_set_flag(_name, _field); \
990 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
992 struct ide_proc_devset
{
994 const struct ide_devset
*setting
;
996 int (*mulf
)(ide_drive_t
*);
997 int (*divf
)(ide_drive_t
*);
1000 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
1001 .name = __stringify(_name), \
1002 .setting = &ide_devset_##_name, \
1009 #define IDE_PROC_DEVSET(_name, _min, _max) \
1010 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1015 read_proc_t
*read_proc
;
1016 write_proc_t
*write_proc
;
1019 void proc_ide_create(void);
1020 void proc_ide_destroy(void);
1021 void ide_proc_register_port(ide_hwif_t
*);
1022 void ide_proc_port_register_devices(ide_hwif_t
*);
1023 void ide_proc_unregister_device(ide_drive_t
*);
1024 void ide_proc_unregister_port(ide_hwif_t
*);
1025 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
1026 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
1028 read_proc_t proc_ide_read_capacity
;
1029 read_proc_t proc_ide_read_geometry
;
1032 * Standard exit stuff:
1034 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1037 if (len < count) { \
1043 *start = page + off; \
1047 static inline void proc_ide_create(void) { ; }
1048 static inline void proc_ide_destroy(void) { ; }
1049 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1050 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1051 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1052 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1053 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
1054 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
1055 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1059 /* enter/exit functions */
1060 IDE_DBG_FUNC
= (1 << 0),
1061 /* sense key/asc handling */
1062 IDE_DBG_SENSE
= (1 << 1),
1063 /* packet commands handling */
1064 IDE_DBG_PC
= (1 << 2),
1065 /* request handling */
1066 IDE_DBG_RQ
= (1 << 3),
1067 /* driver probing/setup */
1068 IDE_DBG_PROBE
= (1 << 4),
1071 /* DRV_NAME has to be defined in the driver before using the macro below */
1072 #define __ide_debug_log(lvl, fmt, args...) \
1074 if (unlikely(drive->debug_mask & lvl)) \
1075 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1079 * Power Management state machine (rq->pm->pm_step).
1081 * For each step, the core calls ide_start_power_step() first.
1083 * - ide_stopped : In this case, the core calls us back again unless
1084 * step have been set to ide_power_state_completed.
1085 * - ide_started : In this case, the channel is left busy until an
1086 * async event (interrupt) occurs.
1087 * Typically, ide_start_power_step() will issue a taskfile request with
1090 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1091 * with the error code if any. This routine should update the step value
1092 * and return. It should not start a new request. The core will call
1093 * ide_start_power_step() for the new step value, unless step have been
1094 * set to IDE_PM_COMPLETED.
1097 IDE_PM_START_SUSPEND
,
1098 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1101 IDE_PM_START_RESUME
,
1102 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1110 * Subdrivers support.
1112 * The gendriver.owner field should be set to the module owner of this driver.
1113 * The gendriver.name field should be set to the name of this driver
1115 struct ide_driver_s
{
1116 const char *version
;
1117 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1118 int (*end_request
)(ide_drive_t
*, int, int);
1119 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
1120 struct device_driver gen_driver
;
1121 int (*probe
)(ide_drive_t
*);
1122 void (*remove
)(ide_drive_t
*);
1123 void (*resume
)(ide_drive_t
*);
1124 void (*shutdown
)(ide_drive_t
*);
1125 #ifdef CONFIG_IDE_PROC_FS
1126 ide_proc_entry_t
*proc
;
1127 const struct ide_proc_devset
*settings
;
1131 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1133 int ide_device_get(ide_drive_t
*);
1134 void ide_device_put(ide_drive_t
*);
1136 struct ide_ioctl_devset
{
1137 unsigned int get_ioctl
;
1138 unsigned int set_ioctl
;
1139 const struct ide_devset
*setting
;
1142 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1143 unsigned long, const struct ide_ioctl_devset
*);
1145 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*,
1146 unsigned, unsigned long);
1148 extern int ide_vlb_clk
;
1149 extern int ide_pci_clk
;
1151 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1152 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1153 int uptodate
, int nr_sectors
);
1155 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1157 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1160 void ide_execute_pkt_cmd(ide_drive_t
*);
1162 void ide_pad_transfer(ide_drive_t
*, int, int);
1164 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1166 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1168 void ide_fix_driveid(u16
*);
1170 extern void ide_fixstring(u8
*, const int, const int);
1172 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1174 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1176 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1178 extern int ide_devset_execute(ide_drive_t
*drive
,
1179 const struct ide_devset
*setting
, int arg
);
1181 extern void ide_do_drive_cmd(ide_drive_t
*, struct request
*);
1183 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1185 void ide_tf_dump(const char *, struct ide_taskfile
*);
1187 void ide_exec_command(ide_hwif_t
*, u8
);
1188 u8
ide_read_status(ide_hwif_t
*);
1189 u8
ide_read_altstatus(ide_hwif_t
*);
1190 u8
ide_read_sff_dma_status(ide_hwif_t
*);
1192 void ide_set_irq(ide_hwif_t
*, int);
1194 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1195 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1197 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1198 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1200 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1202 extern void SELECT_DRIVE(ide_drive_t
*);
1203 void SELECT_MASK(ide_drive_t
*, int);
1205 u8
ide_read_error(ide_drive_t
*);
1206 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1208 extern int drive_is_ready(ide_drive_t
*);
1210 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
1212 int ide_check_atapi_device(ide_drive_t
*, const char *);
1214 void ide_init_pc(struct ide_atapi_pc
*);
1216 /* Disk head parking */
1217 extern wait_queue_head_t ide_park_wq
;
1218 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1220 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1221 const char *buf
, size_t len
);
1224 * Special requests for ide-tape block device strategy routine.
1226 * In order to service a character device command, we add special requests to
1227 * the tail of our block device request queue and wait for their completion.
1230 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1231 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1232 REQ_IDETAPE_READ
= (1 << 2),
1233 REQ_IDETAPE_WRITE
= (1 << 3),
1236 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1238 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1239 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1240 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1241 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1242 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1244 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc
*pc
)
1246 return max_t(unsigned long, WAIT_CMD
, pc
->timeout
- jiffies
);
1249 int ide_scsi_expiry(ide_drive_t
*);
1251 ide_startstop_t
ide_issue_pc(ide_drive_t
*, unsigned int, ide_expiry_t
*);
1253 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1255 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1257 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1258 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1260 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1262 extern int ide_driveid_update(ide_drive_t
*);
1263 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1264 extern u8
eighty_ninty_three (ide_drive_t
*);
1265 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1267 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1269 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1271 extern void ide_timer_expiry(unsigned long);
1272 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1273 extern void do_ide_request(struct request_queue
*);
1275 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1277 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1278 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1279 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1281 #define ide_pci_register_driver(d) pci_register_driver(d)
1284 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int,
1285 hw_regs_t
*, hw_regs_t
**);
1286 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1288 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1289 int ide_pci_set_master(struct pci_dev
*, const char *);
1290 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1291 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1292 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1294 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1295 const struct ide_port_info
*d
)
1301 typedef struct ide_pci_enablebit_s
{
1302 u8 reg
; /* byte pci reg holding the enable-bit */
1303 u8 mask
; /* mask to isolate the enable-bit */
1304 u8 val
; /* value of masked reg when "enabled" */
1305 } ide_pci_enablebit_t
;
1308 /* Uses ISA control ports not PCI ones. */
1309 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1310 /* single port device */
1311 IDE_HFLAG_SINGLE
= (1 << 1),
1312 /* don't use legacy PIO blacklist */
1313 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1314 /* set for the second port of QD65xx */
1315 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1316 /* use PIO8/9 for prefetch off/on */
1317 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1318 /* use PIO6/7 for fast-devsel off/on */
1319 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1320 /* use 100-102 and 200-202 PIO values to set DMA modes */
1321 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1323 * keep DMA setting when programming PIO mode, may be used only
1324 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1326 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1327 /* program host for the transfer mode after programming device */
1328 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1329 /* don't program host/device for the transfer mode ("smart" hosts) */
1330 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1331 /* trust BIOS for programming chipset/device for DMA */
1332 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1333 /* host is CS5510/CS5520 */
1334 IDE_HFLAG_CS5520
= (1 << 11),
1335 /* ATAPI DMA is unsupported */
1336 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1337 /* set if host is a "non-bootable" controller */
1338 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1339 /* host doesn't support DMA */
1340 IDE_HFLAG_NO_DMA
= (1 << 14),
1341 /* check if host is PCI IDE device before allowing DMA */
1342 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1343 /* host uses MMIO */
1344 IDE_HFLAG_MMIO
= (1 << 16),
1346 IDE_HFLAG_NO_LBA48
= (1 << 17),
1348 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1349 /* data FIFO is cleared by an error */
1350 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1351 /* serialize ports */
1352 IDE_HFLAG_SERIALIZE
= (1 << 20),
1353 /* use legacy IRQs */
1354 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1355 /* force use of legacy IRQs */
1356 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1357 /* limit LBA48 requests to 256 sectors */
1358 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1359 /* use 32-bit I/O ops */
1360 IDE_HFLAG_IO_32BIT
= (1 << 24),
1362 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1363 /* serialize ports if DMA is possible (for sl82c105) */
1364 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1365 /* force host out of "simplex" mode */
1366 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1367 /* DSC overlap is unsupported */
1368 IDE_HFLAG_NO_DSC
= (1 << 29),
1369 /* never use 32-bit I/O ops */
1370 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1371 /* never unmask IRQs */
1372 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1375 #ifdef CONFIG_BLK_DEV_OFFBOARD
1376 # define IDE_HFLAG_OFF_BOARD 0
1378 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1381 struct ide_port_info
{
1383 unsigned int (*init_chipset
)(struct pci_dev
*);
1384 void (*init_iops
)(ide_hwif_t
*);
1385 void (*init_hwif
)(ide_hwif_t
*);
1386 int (*init_dma
)(ide_hwif_t
*,
1387 const struct ide_port_info
*);
1389 const struct ide_tp_ops
*tp_ops
;
1390 const struct ide_port_ops
*port_ops
;
1391 const struct ide_dma_ops
*dma_ops
;
1393 ide_pci_enablebit_t enablebits
[2];
1394 hwif_chipset_t chipset
;
1402 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1403 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1404 const struct ide_port_info
*, void *);
1405 void ide_pci_remove(struct pci_dev
*);
1408 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1409 int ide_pci_resume(struct pci_dev
*);
1411 #define ide_pci_suspend NULL
1412 #define ide_pci_resume NULL
1415 void ide_map_sg(ide_drive_t
*, struct request
*);
1416 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1418 #define BAD_DMA_DRIVE 0
1419 #define GOOD_DMA_DRIVE 1
1421 struct drive_list_entry
{
1422 const char *id_model
;
1423 const char *id_firmware
;
1426 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1428 #ifdef CONFIG_BLK_DEV_IDEDMA
1429 int ide_dma_good_drive(ide_drive_t
*);
1430 int __ide_dma_bad_drive(ide_drive_t
*);
1431 int ide_id_dma_bug(ide_drive_t
*);
1433 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1435 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1437 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1440 void ide_dma_off_quietly(ide_drive_t
*);
1441 void ide_dma_off(ide_drive_t
*);
1442 void ide_dma_on(ide_drive_t
*);
1443 int ide_set_dma(ide_drive_t
*);
1444 void ide_check_dma_crc(ide_drive_t
*);
1445 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1447 int ide_allocate_dma_engine(ide_hwif_t
*);
1448 void ide_release_dma_engine(ide_hwif_t
*);
1450 int ide_build_sglist(ide_drive_t
*, struct request
*);
1451 void ide_destroy_dmatable(ide_drive_t
*);
1453 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1454 int config_drive_for_dma(ide_drive_t
*);
1455 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1456 void ide_dma_host_set(ide_drive_t
*, int);
1457 extern int ide_dma_setup(ide_drive_t
*);
1458 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1459 extern void ide_dma_start(ide_drive_t
*);
1460 int ide_dma_end(ide_drive_t
*);
1461 int ide_dma_test_irq(ide_drive_t
*);
1462 extern const struct ide_dma_ops sff_dma_ops
;
1464 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1465 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1467 void ide_dma_lost_irq(ide_drive_t
*);
1468 void ide_dma_timeout(ide_drive_t
*);
1471 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1472 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1473 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1474 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1475 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1476 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1477 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1478 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1479 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1480 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1481 #endif /* CONFIG_BLK_DEV_IDEDMA */
1483 #ifdef CONFIG_BLK_DEV_IDEACPI
1484 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1485 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1486 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1487 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1488 void ide_acpi_port_init_devices(ide_hwif_t
*);
1489 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1491 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1492 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1493 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1494 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1495 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1496 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1499 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1500 void ide_unregister(ide_hwif_t
*);
1502 void ide_register_region(struct gendisk
*);
1503 void ide_unregister_region(struct gendisk
*);
1505 void ide_undecoded_slave(ide_drive_t
*);
1507 void ide_port_apply_params(ide_hwif_t
*);
1509 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1510 void ide_host_free(struct ide_host
*);
1511 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1513 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1514 struct ide_host
**);
1515 void ide_host_remove(struct ide_host
*);
1516 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1517 void ide_port_unregister_devices(ide_hwif_t
*);
1518 void ide_port_scan(ide_hwif_t
*);
1520 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1522 return hwif
->hwif_data
;
1525 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1527 hwif
->hwif_data
= data
;
1530 const char *ide_xfer_verbose(u8 mode
);
1531 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1532 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1534 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1535 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1540 u16 act8b
; /* t2 for 8-bit io */
1541 u16 rec8b
; /* t2i for 8-bit io */
1542 u16 cyc8b
; /* t0 for 8-bit io */
1543 u16 active
; /* t2 or tD */
1544 u16 recover
; /* t2i or tK */
1546 u16 udma
; /* t2CYCTYP/2 */
1550 IDE_TIMING_SETUP
= (1 << 0),
1551 IDE_TIMING_ACT8B
= (1 << 1),
1552 IDE_TIMING_REC8B
= (1 << 2),
1553 IDE_TIMING_CYC8B
= (1 << 3),
1554 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1556 IDE_TIMING_ACTIVE
= (1 << 4),
1557 IDE_TIMING_RECOVER
= (1 << 5),
1558 IDE_TIMING_CYCLE
= (1 << 6),
1559 IDE_TIMING_UDMA
= (1 << 7),
1560 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1561 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1562 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1565 struct ide_timing
*ide_timing_find_mode(u8
);
1566 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1567 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1568 struct ide_timing
*, unsigned int);
1569 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1571 int ide_scan_pio_blacklist(char *);
1573 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1575 int ide_set_pio_mode(ide_drive_t
*, u8
);
1576 int ide_set_dma_mode(ide_drive_t
*, u8
);
1578 void ide_set_pio(ide_drive_t
*, u8
);
1580 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1582 ide_set_pio(drive
, 255);
1585 extern spinlock_t ide_lock
;
1586 extern struct mutex ide_cfg_mtx
;
1588 * Structure locking:
1590 * ide_cfg_mtx and ide_lock together protect changes to
1591 * ide_hwif_t->{next,hwgroup}
1594 * ide_hwgroup_t->busy: ide_lock
1595 * ide_hwgroup_t->hwif: ide_lock
1596 * ide_hwif_t->mate: constant, no locking
1597 * ide_drive_t->hwif: constant, no locking
1600 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1602 extern struct bus_type ide_bus_type
;
1603 extern struct class *ide_port_class
;
1605 static inline void ide_dump_identify(u8
*id
)
1607 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1610 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1612 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1615 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1617 ide_drive_t
*peer
= &drive
->hwif
->drives
[(drive
->dn
^ 1) & 1];
1619 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;