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
126 * Timeouts for various operations:
129 /* spec allows up to 20ms */
130 WAIT_DRQ
= HZ
/ 10, /* 100ms */
131 /* some laptops are very slow */
132 WAIT_READY
= 5 * HZ
, /* 5s */
133 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
134 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
135 /* worst case when spinning up */
136 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
137 /* maximum wait for an IRQ to happen */
138 WAIT_CMD
= 10 * HZ
, /* 10s */
139 /* Some drives require a longer IRQ timeout. */
140 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
142 * Some drives (for example, Seagate STT3401A Travan) require a very
143 * long timeout, because they don't return an interrupt or clear their
144 * BSY bit until after the command completes (even retension commands).
146 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
147 /* minimum sleep time */
148 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
152 * Op codes for special requests to be handled by ide_special_rq().
153 * Values should be in the range of 0x20 to 0x3f.
155 #define REQ_DRIVE_RESET 0x20
156 #define REQ_DEVSET_EXEC 0x21
157 #define REQ_PARK_HEADS 0x22
158 #define REQ_UNPARK_HEADS 0x23
161 * Check for an interrupt and acknowledge the interrupt status
164 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
167 * hwif_chipset_t is used to keep track of the specific hardware
168 * chipset used by each IDE interface, if known.
170 enum { ide_unknown
, ide_generic
, ide_pci
,
171 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
172 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
173 ide_4drives
, ide_pmac
, ide_acorn
,
174 ide_au1xxx
, ide_palm3710
177 typedef u8 hwif_chipset_t
;
180 * Structure to hold all information about the location of this port
182 typedef struct hw_regs_s
{
184 struct ide_io_ports io_ports
;
185 unsigned long io_ports_array
[IDE_NR_PORTS
];
188 int irq
; /* our irq number */
189 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
190 hwif_chipset_t chipset
;
191 struct device
*dev
, *parent
;
192 unsigned long config
;
195 void ide_init_port_data(struct hwif_s
*, unsigned int);
196 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
198 static inline void ide_std_init_ports(hw_regs_t
*hw
,
199 unsigned long io_addr
,
200 unsigned long ctl_addr
)
204 for (i
= 0; i
<= 7; i
++)
205 hw
->io_ports_array
[i
] = io_addr
++;
207 hw
->io_ports
.ctl_addr
= ctl_addr
;
210 /* for IDE PCI controllers in legacy mode, temporary */
211 static inline int __ide_default_irq(unsigned long base
)
215 case 0x1f0: return isa_irq_to_vector(14);
216 case 0x170: return isa_irq_to_vector(15);
218 case 0x1f0: return 14;
219 case 0x170: return 15;
225 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
226 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
227 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
230 #include <asm-generic/ide_iops.h>
235 /* Currently only m68k, apus and m8xx need it */
236 #ifndef IDE_ARCH_ACK_INTR
237 # define ide_ack_intr(hwif) (1)
240 /* Currently only Atari needs it */
241 #ifndef IDE_ARCH_LOCK
242 # define ide_release_lock() do {} while (0)
243 # define ide_get_lock(hdlr, data) do {} while (0)
244 #endif /* IDE_ARCH_LOCK */
247 * Now for the data we need to maintain per-drive: ide_drive_t
250 #define ide_scsi 0x21
251 #define ide_disk 0x20
252 #define ide_optical 0x7
253 #define ide_cdrom 0x5
255 #define ide_floppy 0x0
258 * Special Driver Flags
260 * set_geometry : respecify drive geometry
261 * recalibrate : seek to cyl 0
262 * set_multmode : set multmode count
268 unsigned set_geometry
: 1;
269 unsigned recalibrate
: 1;
270 unsigned set_multmode
: 1;
271 unsigned reserved
: 5;
276 * Status returned from various ide_ functions
279 ide_stopped
, /* no drive operation was started */
280 ide_started
, /* a drive operation was started, handler was set */
284 IDE_TFLAG_LBA48
= (1 << 0),
285 IDE_TFLAG_FLAGGED
= (1 << 2),
286 IDE_TFLAG_OUT_DATA
= (1 << 3),
287 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
288 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
289 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
290 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
291 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
292 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
293 IDE_TFLAG_OUT_HOB_NSECT
|
294 IDE_TFLAG_OUT_HOB_LBAL
|
295 IDE_TFLAG_OUT_HOB_LBAM
|
296 IDE_TFLAG_OUT_HOB_LBAH
,
297 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
298 IDE_TFLAG_OUT_NSECT
= (1 << 10),
299 IDE_TFLAG_OUT_LBAL
= (1 << 11),
300 IDE_TFLAG_OUT_LBAM
= (1 << 12),
301 IDE_TFLAG_OUT_LBAH
= (1 << 13),
302 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
303 IDE_TFLAG_OUT_NSECT
|
307 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
308 IDE_TFLAG_WRITE
= (1 << 15),
309 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
310 IDE_TFLAG_IN_DATA
= (1 << 17),
311 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
312 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
313 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
314 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
315 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
316 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
317 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
318 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
319 IDE_TFLAG_IN_HOB_LBAM
|
320 IDE_TFLAG_IN_HOB_LBAH
,
321 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
322 IDE_TFLAG_IN_HOB_NSECT
|
323 IDE_TFLAG_IN_HOB_LBA
,
324 IDE_TFLAG_IN_FEATURE
= (1 << 1),
325 IDE_TFLAG_IN_NSECT
= (1 << 25),
326 IDE_TFLAG_IN_LBAL
= (1 << 26),
327 IDE_TFLAG_IN_LBAM
= (1 << 27),
328 IDE_TFLAG_IN_LBAH
= (1 << 28),
329 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
332 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
334 IDE_TFLAG_IN_DEVICE
= (1 << 29),
335 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
337 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
339 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
341 /* force 16-bit I/O operations */
342 IDE_TFLAG_IO_16BIT
= (1 << 30),
343 /* ide_task_t was allocated using kmalloc() */
344 IDE_TFLAG_DYN
= (1 << 31),
347 struct ide_taskfile
{
348 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
350 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
356 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
359 u8 error
; /* read: error */
360 u8 feature
; /* write: feature */
363 u8 nsect
; /* 8: number of sectors */
364 u8 lbal
; /* 9: LBA low */
365 u8 lbam
; /* 10: LBA mid */
366 u8 lbah
; /* 11: LBA high */
368 u8 device
; /* 12: device select */
371 u8 status
; /* read: status */
372 u8 command
; /* write: command */
376 typedef struct ide_task_s
{
378 struct ide_taskfile tf
;
383 struct request
*rq
; /* copy of request */
384 void *special
; /* valid_t generally */
387 /* ATAPI packet command flags */
389 /* set when an error is considered normal - no retry (ide-tape) */
390 PC_FLAG_ABORT
= (1 << 0),
391 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
392 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
393 PC_FLAG_DMA_OK
= (1 << 3),
394 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
395 PC_FLAG_DMA_ERROR
= (1 << 5),
396 PC_FLAG_WRITING
= (1 << 6),
397 /* command timed out */
398 PC_FLAG_TIMEDOUT
= (1 << 7),
402 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
403 * This is used for several packet commands (not for READ/WRITE commands).
405 #define IDE_PC_BUFFER_SIZE 256
407 struct ide_atapi_pc
{
408 /* actual packet bytes */
410 /* incremented on each retry */
414 /* bytes to transfer */
416 /* bytes actually transferred */
421 /* current buffer position */
424 /* missing/available data on the current buffer */
427 /* the corresponding request */
433 * those are more or less driver-specific and some of them are subject
434 * to change/removal later.
436 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
439 struct idetape_bh
*bh
;
442 /* idescsi only for now */
443 struct scatterlist
*sg
;
446 struct scsi_cmnd
*scsi_cmd
;
447 void (*done
) (struct scsi_cmnd
*);
449 unsigned long timeout
;
455 #ifdef CONFIG_BLK_DEV_IDEACPI
456 struct ide_acpi_drive_link
;
457 struct ide_acpi_hwif_link
;
462 struct ide_disk_ops
{
463 int (*check
)(struct ide_drive_s
*, const char *);
464 int (*get_capacity
)(struct ide_drive_s
*);
465 void (*setup
)(struct ide_drive_s
*);
466 void (*flush
)(struct ide_drive_s
*);
467 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
468 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
470 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
472 int (*end_request
)(struct ide_drive_s
*, int, int);
473 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
474 fmode_t
, unsigned int, unsigned long);
477 /* ATAPI device flags */
479 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
482 /* Drive cannot eject the disc. */
483 IDE_AFLAG_NO_EJECT
= (1 << 3),
484 /* Drive is a pre ATAPI 1.2 drive. */
485 IDE_AFLAG_PRE_ATAPI12
= (1 << 4),
486 /* TOC addresses are in BCD. */
487 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 5),
488 /* TOC track numbers are in BCD. */
489 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 6),
491 * Drive does not provide data in multiples of SECTOR_SIZE
492 * when more than one interrupt is needed.
494 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 7),
495 /* Saved TOC information is current. */
496 IDE_AFLAG_TOC_VALID
= (1 << 9),
497 /* We think that the drive door is locked. */
498 IDE_AFLAG_DOOR_LOCKED
= (1 << 10),
499 /* SET_CD_SPEED command is unsupported. */
500 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 11),
501 IDE_AFLAG_VERTOS_300_SSD
= (1 << 12),
502 IDE_AFLAG_VERTOS_600_ESD
= (1 << 13),
503 IDE_AFLAG_SANYO_3CD
= (1 << 14),
504 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 15),
505 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 16),
506 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 17),
509 /* Avoid commands not supported in Clik drive */
510 IDE_AFLAG_CLIK_DRIVE
= (1 << 19),
511 /* Requires BH algorithm for packets */
512 IDE_AFLAG_ZIP_DRIVE
= (1 << 20),
513 /* Supports format progress report */
514 IDE_AFLAG_SRFP
= (1 << 22),
517 IDE_AFLAG_IGNORE_DSC
= (1 << 23),
518 /* 0 When the tape position is unknown */
519 IDE_AFLAG_ADDRESS_VALID
= (1 << 24),
520 /* Device already opened */
521 IDE_AFLAG_BUSY
= (1 << 25),
522 /* Attempt to auto-detect the current user block size */
523 IDE_AFLAG_DETECT_BS
= (1 << 26),
524 /* Currently on a filemark */
525 IDE_AFLAG_FILEMARK
= (1 << 27),
526 /* 0 = no tape is loaded, so we don't rewind after ejecting */
527 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 28),
529 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 29),
534 /* restore settings after device reset */
535 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
536 /* device is using DMA for read/write */
537 IDE_DFLAG_USING_DMA
= (1 << 1),
538 /* okay to unmask other IRQs */
539 IDE_DFLAG_UNMASK
= (1 << 2),
540 /* don't attempt flushes */
541 IDE_DFLAG_NOFLUSH
= (1 << 3),
543 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
544 /* give potential excess bandwidth */
545 IDE_DFLAG_NICE1
= (1 << 5),
546 /* device is physically present */
547 IDE_DFLAG_PRESENT
= (1 << 6),
548 /* device ejected hint */
549 IDE_DFLAG_DEAD
= (1 << 7),
550 /* id read from device (synthetic if not set) */
551 IDE_DFLAG_ID_READ
= (1 << 8),
552 IDE_DFLAG_NOPROBE
= (1 << 9),
553 /* need to do check_media_change() */
554 IDE_DFLAG_REMOVABLE
= (1 << 10),
555 /* needed for removable devices */
556 IDE_DFLAG_ATTACH
= (1 << 11),
557 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
558 /* disallow setting unmask bit */
559 IDE_DFLAG_NO_UNMASK
= (1 << 13),
560 /* disallow enabling 32-bit I/O */
561 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
562 /* for removable only: door lock/unlock works */
563 IDE_DFLAG_DOORLOCKING
= (1 << 15),
565 IDE_DFLAG_NODMA
= (1 << 16),
566 /* powermanagment told us not to do anything, so sleep nicely */
567 IDE_DFLAG_BLOCKED
= (1 << 17),
568 /* ide-scsi emulation */
569 IDE_DFLAG_SCSI
= (1 << 18),
570 /* sleeping & sleep field valid */
571 IDE_DFLAG_SLEEPING
= (1 << 19),
572 IDE_DFLAG_POST_RESET
= (1 << 20),
573 IDE_DFLAG_UDMA33_WARNED
= (1 << 21),
574 IDE_DFLAG_LBA48
= (1 << 22),
575 /* status of write cache */
576 IDE_DFLAG_WCACHE
= (1 << 23),
577 /* used for ignoring ATA_DF */
578 IDE_DFLAG_NOWERR
= (1 << 24),
579 /* retrying in PIO */
580 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 25),
581 IDE_DFLAG_LBA
= (1 << 26),
582 /* don't unload heads */
583 IDE_DFLAG_NO_UNLOAD
= (1 << 27),
584 /* heads unloaded, please don't reset port */
585 IDE_DFLAG_PARKED
= (1 << 28),
586 IDE_DFLAG_MEDIA_CHANGED
= (1 << 29),
588 IDE_DFLAG_WP
= (1 << 30),
589 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 31),
593 char name
[4]; /* drive name, such as "hda" */
594 char driver_req
[10]; /* requests specific driver */
596 struct request_queue
*queue
; /* request queue */
598 struct request
*rq
; /* current request */
599 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
600 void *driver_data
; /* extra driver data */
601 u16
*id
; /* identification info */
602 #ifdef CONFIG_IDE_PROC_FS
603 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
604 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
606 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
608 const struct ide_disk_ops
*disk_ops
;
610 unsigned long dev_flags
;
612 unsigned long sleep
; /* sleep until this time */
613 unsigned long service_start
; /* time we started last request */
614 unsigned long service_time
; /* service time of last request */
615 unsigned long timeout
; /* max time to wait for irq */
617 special_t special
; /* special action flags */
619 u8 select
; /* basic drive/head select reg value */
620 u8 retry_pio
; /* retrying dma capable host in pio */
621 u8 waiting_for_dma
; /* dma currently in progress */
622 u8 dma
; /* atapi dma flag */
624 u8 quirk_list
; /* considered quirky, set for a specific host */
625 u8 init_speed
; /* transfer rate set at boot */
626 u8 current_speed
; /* current transfer rate set */
627 u8 desired_speed
; /* desired transfer rate set */
628 u8 dn
; /* now wide spread use */
629 u8 acoustic
; /* acoustic management */
630 u8 media
; /* disk, cdrom, tape, floppy, ... */
631 u8 ready_stat
; /* min status value for drive ready */
632 u8 mult_count
; /* current multiple sector setting */
633 u8 mult_req
; /* requested multiple sector setting */
634 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
635 u8 bad_wstat
; /* used for ignoring ATA_DF */
636 u8 head
; /* "real" number of heads */
637 u8 sect
; /* "real" sectors per track */
638 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
639 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
641 /* delay this long before sending packet command */
644 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
645 unsigned int cyl
; /* "real" number of cyls */
646 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
647 unsigned int failures
; /* current failure count */
648 unsigned int max_failures
; /* maximum allowed failure count */
649 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
651 u64 capacity64
; /* total number of sectors */
653 int lun
; /* logical unit */
654 int crc_count
; /* crc counter to reduce drive speed */
656 unsigned long debug_mask
; /* debugging levels switch */
658 #ifdef CONFIG_BLK_DEV_IDEACPI
659 struct ide_acpi_drive_link
*acpidata
;
661 struct list_head list
;
662 struct device gendev
;
663 struct completion gendev_rel_comp
; /* to deal with device release() */
665 /* current packet command */
666 struct ide_atapi_pc
*pc
;
668 /* callback for packet commands */
669 void (*pc_callback
)(struct ide_drive_s
*, int);
671 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
672 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
675 unsigned long atapi_flags
;
677 struct ide_atapi_pc request_sense_pc
;
678 struct request request_sense_rq
;
681 typedef struct ide_drive_s ide_drive_t
;
683 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
685 #define to_ide_drv(obj, cont_type) \
686 container_of(obj, struct cont_type, kref)
688 #define ide_drv_g(disk, cont_type) \
689 container_of((disk)->private_data, struct cont_type, driver)
691 struct ide_port_info
;
694 void (*exec_command
)(struct hwif_s
*, u8
);
695 u8 (*read_status
)(struct hwif_s
*);
696 u8 (*read_altstatus
)(struct hwif_s
*);
697 u8 (*read_sff_dma_status
)(struct hwif_s
*);
699 void (*set_irq
)(struct hwif_s
*, int);
701 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
702 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
704 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
706 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
710 extern const struct ide_tp_ops default_tp_ops
;
713 * struct ide_port_ops - IDE port operations
715 * @init_dev: host specific initialization of a device
716 * @set_pio_mode: routine to program host for PIO mode
717 * @set_dma_mode: routine to program host for DMA mode
718 * @selectproc: tweaks hardware to select drive
719 * @reset_poll: chipset polling based on hba specifics
720 * @pre_reset: chipset specific changes to default for device-hba resets
721 * @resetproc: routine to reset controller after a disk reset
722 * @maskproc: special host masking for drive selection
723 * @quirkproc: check host's drive quirk list
724 * @clear_irq: clear IRQ
726 * @mdma_filter: filter MDMA modes
727 * @udma_filter: filter UDMA modes
729 * @cable_detect: detect cable type
731 struct ide_port_ops
{
732 void (*init_dev
)(ide_drive_t
*);
733 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
734 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
735 void (*selectproc
)(ide_drive_t
*);
736 int (*reset_poll
)(ide_drive_t
*);
737 void (*pre_reset
)(ide_drive_t
*);
738 void (*resetproc
)(ide_drive_t
*);
739 void (*maskproc
)(ide_drive_t
*, int);
740 void (*quirkproc
)(ide_drive_t
*);
741 void (*clear_irq
)(ide_drive_t
*);
743 u8 (*mdma_filter
)(ide_drive_t
*);
744 u8 (*udma_filter
)(ide_drive_t
*);
746 u8 (*cable_detect
)(struct hwif_s
*);
750 void (*dma_host_set
)(struct ide_drive_s
*, int);
751 int (*dma_setup
)(struct ide_drive_s
*);
752 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
753 void (*dma_start
)(struct ide_drive_s
*);
754 int (*dma_end
)(struct ide_drive_s
*);
755 int (*dma_test_irq
)(struct ide_drive_s
*);
756 void (*dma_lost_irq
)(struct ide_drive_s
*);
757 void (*dma_timeout
)(struct ide_drive_s
*);
762 typedef struct hwif_s
{
763 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
764 struct hwif_s
*mate
; /* other hwif from same PCI chip */
765 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
766 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
768 struct ide_host
*host
;
770 char name
[6]; /* name of interface, eg. "ide0" */
772 struct ide_io_ports io_ports
;
774 unsigned long sata_scr
[SATA_NR_PORTS
];
776 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
778 u8 major
; /* our major number */
779 u8 index
; /* 0 for ide0; 1 for ide1; ... */
780 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
790 u8 cbl
; /* cable type */
792 hwif_chipset_t chipset
; /* sub-module for tuning.. */
796 ide_ack_intr_t
*ack_intr
;
798 void (*rw_disk
)(ide_drive_t
*, struct request
*);
800 const struct ide_tp_ops
*tp_ops
;
801 const struct ide_port_ops
*port_ops
;
802 const struct ide_dma_ops
*dma_ops
;
804 /* dma physical region descriptor table (cpu view) */
805 unsigned int *dmatable_cpu
;
806 /* dma physical region descriptor table (dma view) */
807 dma_addr_t dmatable_dma
;
809 /* maximum number of PRD table entries */
811 /* PRD entry size in bytes */
814 /* Scatter-gather list used to build the above */
815 struct scatterlist
*sg_table
;
816 int sg_max_nents
; /* Maximum number of entries in it */
817 int sg_nents
; /* Current number of entries in it */
818 int sg_dma_direction
; /* dma transfer direction */
820 /* data phase of the active command (currently only valid for PIO/DMA) */
823 struct ide_task_s task
; /* current command */
827 struct scatterlist
*cursg
;
828 unsigned int cursg_ofs
;
830 int rqsize
; /* max sectors per request */
831 int irq
; /* our irq number */
833 unsigned long dma_base
; /* base addr for dma ports */
835 unsigned long config_data
; /* for use by chipset-specific code */
836 unsigned long select_data
; /* for use by chipset-specific code */
838 unsigned long extra_base
; /* extra addr for dma ports */
839 unsigned extra_ports
; /* number of extra dma ports */
841 unsigned present
: 1; /* this interface exists */
842 unsigned serialized
: 1; /* serialized all channel operation */
843 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
845 struct device gendev
;
846 struct device
*portdev
;
848 struct completion gendev_rel_comp
; /* To deal with device release() */
850 void *hwif_data
; /* extra hwif data */
852 #ifdef CONFIG_BLK_DEV_IDEACPI
853 struct ide_acpi_hwif_link
*acpidata
;
855 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
857 #define MAX_HOST_PORTS 4
860 ide_hwif_t
*ports
[MAX_HOST_PORTS
];
861 unsigned int n_ports
;
862 struct device
*dev
[2];
863 unsigned int (*init_chipset
)(struct pci_dev
*);
864 unsigned long host_flags
;
869 * internal ide interrupt handler type
871 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
872 typedef int (ide_expiry_t
)(ide_drive_t
*);
874 /* used by ide-cd, ide-floppy, etc. */
875 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
877 typedef struct hwgroup_s
{
878 /* irq handler, if active */
879 ide_startstop_t (*handler
)(ide_drive_t
*);
881 /* BOOL: protects all fields below */
883 /* BOOL: wake us up on timer expiry */
884 unsigned int sleeping
: 1;
885 /* BOOL: polling active & poll_timeout field valid */
886 unsigned int polling
: 1;
890 /* ptr to current hwif in linked-list */
893 /* current request */
897 struct timer_list timer
;
898 /* timeout value during long polls */
899 unsigned long poll_timeout
;
900 /* queried upon timeouts */
901 int (*expiry
)(ide_drive_t
*);
909 typedef struct ide_driver_s ide_driver_t
;
911 extern struct mutex ide_setting_mtx
;
914 * configurable drive settings
917 #define DS_SYNC (1 << 0)
920 int (*get
)(ide_drive_t
*);
921 int (*set
)(ide_drive_t
*, int);
925 #define __DEVSET(_flags, _get, _set) { \
931 #define ide_devset_get(name, field) \
932 static int get_##name(ide_drive_t *drive) \
934 return drive->field; \
937 #define ide_devset_set(name, field) \
938 static int set_##name(ide_drive_t *drive, int arg) \
940 drive->field = arg; \
944 #define ide_devset_get_flag(name, flag) \
945 static int get_##name(ide_drive_t *drive) \
947 return !!(drive->dev_flags & flag); \
950 #define ide_devset_set_flag(name, flag) \
951 static int set_##name(ide_drive_t *drive, int arg) \
954 drive->dev_flags |= flag; \
956 drive->dev_flags &= ~flag; \
960 #define __IDE_DEVSET(_name, _flags, _get, _set) \
961 const struct ide_devset ide_devset_##_name = \
962 __DEVSET(_flags, _get, _set)
964 #define IDE_DEVSET(_name, _flags, _get, _set) \
965 static __IDE_DEVSET(_name, _flags, _get, _set)
967 #define ide_devset_rw(_name, _func) \
968 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
970 #define ide_devset_w(_name, _func) \
971 IDE_DEVSET(_name, 0, NULL, set_##_func)
973 #define ide_ext_devset_rw(_name, _func) \
974 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
976 #define ide_ext_devset_rw_sync(_name, _func) \
977 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
979 #define ide_decl_devset(_name) \
980 extern const struct ide_devset ide_devset_##_name
982 ide_decl_devset(io_32bit
);
983 ide_decl_devset(keepsettings
);
984 ide_decl_devset(pio_mode
);
985 ide_decl_devset(unmaskirq
);
986 ide_decl_devset(using_dma
);
988 #ifdef CONFIG_IDE_PROC_FS
990 * /proc/ide interface
993 #define ide_devset_rw_field(_name, _field) \
994 ide_devset_get(_name, _field); \
995 ide_devset_set(_name, _field); \
996 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
998 #define ide_devset_rw_flag(_name, _field) \
999 ide_devset_get_flag(_name, _field); \
1000 ide_devset_set_flag(_name, _field); \
1001 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
1003 struct ide_proc_devset
{
1005 const struct ide_devset
*setting
;
1007 int (*mulf
)(ide_drive_t
*);
1008 int (*divf
)(ide_drive_t
*);
1011 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
1012 .name = __stringify(_name), \
1013 .setting = &ide_devset_##_name, \
1020 #define IDE_PROC_DEVSET(_name, _min, _max) \
1021 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1026 read_proc_t
*read_proc
;
1027 write_proc_t
*write_proc
;
1030 void proc_ide_create(void);
1031 void proc_ide_destroy(void);
1032 void ide_proc_register_port(ide_hwif_t
*);
1033 void ide_proc_port_register_devices(ide_hwif_t
*);
1034 void ide_proc_unregister_device(ide_drive_t
*);
1035 void ide_proc_unregister_port(ide_hwif_t
*);
1036 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
1037 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
1039 read_proc_t proc_ide_read_capacity
;
1040 read_proc_t proc_ide_read_geometry
;
1043 * Standard exit stuff:
1045 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1048 if (len < count) { \
1054 *start = page + off; \
1058 static inline void proc_ide_create(void) { ; }
1059 static inline void proc_ide_destroy(void) { ; }
1060 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1061 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1062 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1063 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1064 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
1065 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
1066 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1070 /* enter/exit functions */
1071 IDE_DBG_FUNC
= (1 << 0),
1072 /* sense key/asc handling */
1073 IDE_DBG_SENSE
= (1 << 1),
1074 /* packet commands handling */
1075 IDE_DBG_PC
= (1 << 2),
1076 /* request handling */
1077 IDE_DBG_RQ
= (1 << 3),
1078 /* driver probing/setup */
1079 IDE_DBG_PROBE
= (1 << 4),
1082 /* DRV_NAME has to be defined in the driver before using the macro below */
1083 #define __ide_debug_log(lvl, fmt, args...) \
1085 if (unlikely(drive->debug_mask & lvl)) \
1086 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1090 * Power Management state machine (rq->pm->pm_step).
1092 * For each step, the core calls ide_start_power_step() first.
1094 * - ide_stopped : In this case, the core calls us back again unless
1095 * step have been set to ide_power_state_completed.
1096 * - ide_started : In this case, the channel is left busy until an
1097 * async event (interrupt) occurs.
1098 * Typically, ide_start_power_step() will issue a taskfile request with
1101 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1102 * with the error code if any. This routine should update the step value
1103 * and return. It should not start a new request. The core will call
1104 * ide_start_power_step() for the new step value, unless step have been
1105 * set to IDE_PM_COMPLETED.
1108 IDE_PM_START_SUSPEND
,
1109 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1112 IDE_PM_START_RESUME
,
1113 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1121 * Subdrivers support.
1123 * The gendriver.owner field should be set to the module owner of this driver.
1124 * The gendriver.name field should be set to the name of this driver
1126 struct ide_driver_s
{
1127 const char *version
;
1128 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1129 int (*end_request
)(ide_drive_t
*, int, int);
1130 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
1131 struct device_driver gen_driver
;
1132 int (*probe
)(ide_drive_t
*);
1133 void (*remove
)(ide_drive_t
*);
1134 void (*resume
)(ide_drive_t
*);
1135 void (*shutdown
)(ide_drive_t
*);
1136 #ifdef CONFIG_IDE_PROC_FS
1137 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1138 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1142 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1144 int ide_device_get(ide_drive_t
*);
1145 void ide_device_put(ide_drive_t
*);
1147 struct ide_ioctl_devset
{
1148 unsigned int get_ioctl
;
1149 unsigned int set_ioctl
;
1150 const struct ide_devset
*setting
;
1153 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1154 unsigned long, const struct ide_ioctl_devset
*);
1156 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1158 extern int ide_vlb_clk
;
1159 extern int ide_pci_clk
;
1161 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1162 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1163 int uptodate
, int nr_sectors
);
1165 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1167 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1170 void ide_execute_pkt_cmd(ide_drive_t
*);
1172 void ide_pad_transfer(ide_drive_t
*, int, int);
1174 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1176 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1178 void ide_fix_driveid(u16
*);
1180 extern void ide_fixstring(u8
*, const int, const int);
1182 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1184 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1186 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1188 extern int ide_devset_execute(ide_drive_t
*drive
,
1189 const struct ide_devset
*setting
, int arg
);
1191 extern void ide_do_drive_cmd(ide_drive_t
*, struct request
*);
1193 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1195 void ide_tf_dump(const char *, struct ide_taskfile
*);
1197 void ide_exec_command(ide_hwif_t
*, u8
);
1198 u8
ide_read_status(ide_hwif_t
*);
1199 u8
ide_read_altstatus(ide_hwif_t
*);
1200 u8
ide_read_sff_dma_status(ide_hwif_t
*);
1202 void ide_set_irq(ide_hwif_t
*, int);
1204 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1205 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1207 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1208 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1210 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1212 extern void SELECT_DRIVE(ide_drive_t
*);
1213 void SELECT_MASK(ide_drive_t
*, int);
1215 u8
ide_read_error(ide_drive_t
*);
1216 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1218 extern int drive_is_ready(ide_drive_t
*);
1220 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
1222 int ide_check_atapi_device(ide_drive_t
*, const char *);
1224 void ide_init_pc(struct ide_atapi_pc
*);
1226 /* Disk head parking */
1227 extern wait_queue_head_t ide_park_wq
;
1228 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1230 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1231 const char *buf
, size_t len
);
1234 * Special requests for ide-tape block device strategy routine.
1236 * In order to service a character device command, we add special requests to
1237 * the tail of our block device request queue and wait for their completion.
1240 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1241 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1242 REQ_IDETAPE_READ
= (1 << 2),
1243 REQ_IDETAPE_WRITE
= (1 << 3),
1246 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1248 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1249 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1250 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1251 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1252 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1254 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc
*pc
)
1256 return max_t(unsigned long, WAIT_CMD
, pc
->timeout
- jiffies
);
1259 int ide_scsi_expiry(ide_drive_t
*);
1261 ide_startstop_t
ide_issue_pc(ide_drive_t
*, unsigned int, ide_expiry_t
*);
1263 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1265 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1267 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1268 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1270 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1272 extern int ide_driveid_update(ide_drive_t
*);
1273 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1274 extern u8
eighty_ninty_three (ide_drive_t
*);
1275 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1277 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1279 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1281 extern void ide_timer_expiry(unsigned long);
1282 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1283 extern void do_ide_request(struct request_queue
*);
1285 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1287 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1288 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1289 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1291 #define ide_pci_register_driver(d) pci_register_driver(d)
1294 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1296 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1301 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int,
1302 hw_regs_t
*, hw_regs_t
**);
1303 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1305 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1306 int ide_pci_set_master(struct pci_dev
*, const char *);
1307 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1308 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1309 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1311 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1312 const struct ide_port_info
*d
)
1318 typedef struct ide_pci_enablebit_s
{
1319 u8 reg
; /* byte pci reg holding the enable-bit */
1320 u8 mask
; /* mask to isolate the enable-bit */
1321 u8 val
; /* value of masked reg when "enabled" */
1322 } ide_pci_enablebit_t
;
1325 /* Uses ISA control ports not PCI ones. */
1326 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1327 /* single port device */
1328 IDE_HFLAG_SINGLE
= (1 << 1),
1329 /* don't use legacy PIO blacklist */
1330 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1331 /* set for the second port of QD65xx */
1332 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1333 /* use PIO8/9 for prefetch off/on */
1334 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1335 /* use PIO6/7 for fast-devsel off/on */
1336 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1337 /* use 100-102 and 200-202 PIO values to set DMA modes */
1338 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1340 * keep DMA setting when programming PIO mode, may be used only
1341 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1343 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1344 /* program host for the transfer mode after programming device */
1345 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1346 /* don't program host/device for the transfer mode ("smart" hosts) */
1347 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1348 /* trust BIOS for programming chipset/device for DMA */
1349 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1350 /* host is CS5510/CS5520 */
1351 IDE_HFLAG_CS5520
= (1 << 11),
1352 /* ATAPI DMA is unsupported */
1353 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1354 /* set if host is a "non-bootable" controller */
1355 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1356 /* host doesn't support DMA */
1357 IDE_HFLAG_NO_DMA
= (1 << 14),
1358 /* check if host is PCI IDE device before allowing DMA */
1359 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1360 /* host uses MMIO */
1361 IDE_HFLAG_MMIO
= (1 << 16),
1363 IDE_HFLAG_NO_LBA48
= (1 << 17),
1365 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1366 /* data FIFO is cleared by an error */
1367 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1368 /* serialize ports */
1369 IDE_HFLAG_SERIALIZE
= (1 << 20),
1370 /* use legacy IRQs */
1371 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1372 /* force use of legacy IRQs */
1373 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1374 /* host is TRM290 */
1375 IDE_HFLAG_TRM290
= (1 << 23),
1376 /* use 32-bit I/O ops */
1377 IDE_HFLAG_IO_32BIT
= (1 << 24),
1379 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1380 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1381 /* serialize ports if DMA is possible (for sl82c105) */
1382 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1383 /* force host out of "simplex" mode */
1384 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1385 /* DSC overlap is unsupported */
1386 IDE_HFLAG_NO_DSC
= (1 << 29),
1387 /* never use 32-bit I/O ops */
1388 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1389 /* never unmask IRQs */
1390 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1393 #ifdef CONFIG_BLK_DEV_OFFBOARD
1394 # define IDE_HFLAG_OFF_BOARD 0
1396 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1399 struct ide_port_info
{
1401 unsigned int (*init_chipset
)(struct pci_dev
*);
1402 void (*init_iops
)(ide_hwif_t
*);
1403 void (*init_hwif
)(ide_hwif_t
*);
1404 int (*init_dma
)(ide_hwif_t
*,
1405 const struct ide_port_info
*);
1407 const struct ide_tp_ops
*tp_ops
;
1408 const struct ide_port_ops
*port_ops
;
1409 const struct ide_dma_ops
*dma_ops
;
1411 ide_pci_enablebit_t enablebits
[2];
1412 hwif_chipset_t chipset
;
1414 u16 max_sectors
; /* if < than the default one */
1423 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1424 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1425 const struct ide_port_info
*, void *);
1426 void ide_pci_remove(struct pci_dev
*);
1429 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1430 int ide_pci_resume(struct pci_dev
*);
1432 #define ide_pci_suspend NULL
1433 #define ide_pci_resume NULL
1436 void ide_map_sg(ide_drive_t
*, struct request
*);
1437 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1439 #define BAD_DMA_DRIVE 0
1440 #define GOOD_DMA_DRIVE 1
1442 struct drive_list_entry
{
1443 const char *id_model
;
1444 const char *id_firmware
;
1447 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1449 #ifdef CONFIG_BLK_DEV_IDEDMA
1450 int ide_dma_good_drive(ide_drive_t
*);
1451 int __ide_dma_bad_drive(ide_drive_t
*);
1452 int ide_id_dma_bug(ide_drive_t
*);
1454 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1456 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1458 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1461 void ide_dma_off_quietly(ide_drive_t
*);
1462 void ide_dma_off(ide_drive_t
*);
1463 void ide_dma_on(ide_drive_t
*);
1464 int ide_set_dma(ide_drive_t
*);
1465 void ide_check_dma_crc(ide_drive_t
*);
1466 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1468 int ide_allocate_dma_engine(ide_hwif_t
*);
1469 void ide_release_dma_engine(ide_hwif_t
*);
1471 int ide_build_sglist(ide_drive_t
*, struct request
*);
1472 void ide_destroy_dmatable(ide_drive_t
*);
1474 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1475 int config_drive_for_dma(ide_drive_t
*);
1476 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1477 void ide_dma_host_set(ide_drive_t
*, int);
1478 extern int ide_dma_setup(ide_drive_t
*);
1479 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1480 extern void ide_dma_start(ide_drive_t
*);
1481 int ide_dma_end(ide_drive_t
*);
1482 int ide_dma_test_irq(ide_drive_t
*);
1483 extern const struct ide_dma_ops sff_dma_ops
;
1485 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1486 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1488 void ide_dma_lost_irq(ide_drive_t
*);
1489 void ide_dma_timeout(ide_drive_t
*);
1492 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1493 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1494 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1495 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1496 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1497 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1498 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1499 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1500 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1501 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1502 #endif /* CONFIG_BLK_DEV_IDEDMA */
1504 #ifdef CONFIG_BLK_DEV_IDEACPI
1505 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1506 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1507 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1508 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1509 void ide_acpi_port_init_devices(ide_hwif_t
*);
1510 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1512 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1513 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1514 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1515 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1516 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1517 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1520 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1521 void ide_unregister(ide_hwif_t
*);
1523 void ide_register_region(struct gendisk
*);
1524 void ide_unregister_region(struct gendisk
*);
1526 void ide_undecoded_slave(ide_drive_t
*);
1528 void ide_port_apply_params(ide_hwif_t
*);
1530 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1531 void ide_host_free(struct ide_host
*);
1532 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1534 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1535 struct ide_host
**);
1536 void ide_host_remove(struct ide_host
*);
1537 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1538 void ide_port_unregister_devices(ide_hwif_t
*);
1539 void ide_port_scan(ide_hwif_t
*);
1541 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1543 return hwif
->hwif_data
;
1546 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1548 hwif
->hwif_data
= data
;
1551 const char *ide_xfer_verbose(u8 mode
);
1552 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1553 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1555 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1556 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1561 u16 act8b
; /* t2 for 8-bit io */
1562 u16 rec8b
; /* t2i for 8-bit io */
1563 u16 cyc8b
; /* t0 for 8-bit io */
1564 u16 active
; /* t2 or tD */
1565 u16 recover
; /* t2i or tK */
1567 u16 udma
; /* t2CYCTYP/2 */
1571 IDE_TIMING_SETUP
= (1 << 0),
1572 IDE_TIMING_ACT8B
= (1 << 1),
1573 IDE_TIMING_REC8B
= (1 << 2),
1574 IDE_TIMING_CYC8B
= (1 << 3),
1575 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1577 IDE_TIMING_ACTIVE
= (1 << 4),
1578 IDE_TIMING_RECOVER
= (1 << 5),
1579 IDE_TIMING_CYCLE
= (1 << 6),
1580 IDE_TIMING_UDMA
= (1 << 7),
1581 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1582 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1583 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1586 struct ide_timing
*ide_timing_find_mode(u8
);
1587 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1588 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1589 struct ide_timing
*, unsigned int);
1590 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1592 int ide_scan_pio_blacklist(char *);
1594 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1596 int ide_set_pio_mode(ide_drive_t
*, u8
);
1597 int ide_set_dma_mode(ide_drive_t
*, u8
);
1599 void ide_set_pio(ide_drive_t
*, u8
);
1601 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1603 ide_set_pio(drive
, 255);
1606 extern spinlock_t ide_lock
;
1607 extern struct mutex ide_cfg_mtx
;
1609 * Structure locking:
1611 * ide_cfg_mtx and hwgroup->lock together protect changes to
1615 * ide_hwgroup_t->busy: hwgroup->lock
1616 * ide_hwgroup_t->hwif: hwgroup->lock
1617 * ide_hwif_t->{hwgroup,mate}: constant, no locking
1618 * ide_drive_t->hwif: constant, no locking
1621 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1623 extern struct bus_type ide_bus_type
;
1624 extern struct class *ide_port_class
;
1626 static inline void ide_dump_identify(u8
*id
)
1628 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1631 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1633 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1636 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1638 ide_drive_t
*peer
= &drive
->hwif
->drives
[(drive
->dn
^ 1) & 1];
1640 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;