1 /* SPDX-License-Identifier: GPL-2.0 */
5 * linux/include/linux/ide.h
7 * Copyright (C) 1994-2002 Linus Torvalds & authors
10 #include <linux/init.h>
11 #include <linux/ioport.h>
12 #include <linux/ata.h>
13 #include <linux/blk-mq.h>
14 #include <linux/proc_fs.h>
15 #include <linux/interrupt.h>
16 #include <linux/bitops.h>
17 #include <linux/bio.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
21 #include <linux/mutex.h>
22 /* for request_sense */
23 #include <linux/cdrom.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <asm/byteorder.h>
29 * Probably not wise to fiddle with these
31 #define SUPPORT_VLB_SYNC 1
32 #define IDE_DEFAULT_MAX_FAILURES 1
33 #define ERROR_MAX 8 /* Max read/write errors per sector */
34 #define ERROR_RESET 3 /* Reset controller every 4th retry */
35 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
39 /* values for ide_request.type */
44 ATA_PRIV_SENSE
, /* sense request */
45 ATA_PRIV_PM_SUSPEND
, /* suspend request */
46 ATA_PRIV_PM_RESUME
, /* resume request */
50 struct scsi_request sreq
;
51 u8 sense
[SCSI_SENSE_BUFFERSIZE
];
56 static inline struct ide_request
*ide_req(struct request
*rq
)
58 return blk_mq_rq_to_pdu(rq
);
61 static inline bool ata_misc_request(struct request
*rq
)
63 return blk_rq_is_private(rq
) && ide_req(rq
)->type
== ATA_PRIV_MISC
;
66 static inline bool ata_taskfile_request(struct request
*rq
)
68 return blk_rq_is_private(rq
) && ide_req(rq
)->type
== ATA_PRIV_TASKFILE
;
71 static inline bool ata_pc_request(struct request
*rq
)
73 return blk_rq_is_private(rq
) && ide_req(rq
)->type
== ATA_PRIV_PC
;
76 static inline bool ata_sense_request(struct request
*rq
)
78 return blk_rq_is_private(rq
) && ide_req(rq
)->type
== ATA_PRIV_SENSE
;
81 static inline bool ata_pm_request(struct request
*rq
)
83 return blk_rq_is_private(rq
) &&
84 (ide_req(rq
)->type
== ATA_PRIV_PM_SUSPEND
||
85 ide_req(rq
)->type
== ATA_PRIV_PM_RESUME
);
88 /* Error codes returned in result to the higher part of the driver. */
90 IDE_DRV_ERROR_GENERAL
= 101,
91 IDE_DRV_ERROR_FILEMARK
= 102,
92 IDE_DRV_ERROR_EOD
= 103,
96 * Definitions for accessing IDE controller registers
98 #define IDE_NR_PORTS (10)
100 struct ide_io_ports
{
101 unsigned long data_addr
;
104 unsigned long error_addr
; /* read: error */
105 unsigned long feature_addr
; /* write: feature */
108 unsigned long nsect_addr
;
109 unsigned long lbal_addr
;
110 unsigned long lbam_addr
;
111 unsigned long lbah_addr
;
113 unsigned long device_addr
;
116 unsigned long status_addr
; /* read: status */
117 unsigned long command_addr
; /* write: command */
120 unsigned long ctl_addr
;
122 unsigned long irq_addr
;
125 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
127 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
128 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
129 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
130 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
132 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
134 #define SATA_NR_PORTS (3) /* 16 possible ?? */
136 #define SATA_STATUS_OFFSET (0)
137 #define SATA_ERROR_OFFSET (1)
138 #define SATA_CONTROL_OFFSET (2)
141 * Our Physical Region Descriptor (PRD) table should be large enough
142 * to handle the biggest I/O request we are likely to see. Since requests
143 * can have no more than 256 sectors, and since the typical blocksize is
144 * two or more sectors, we could get by with a limit of 128 entries here for
145 * the usual worst case. Most requests seem to include some contiguous blocks,
146 * further reducing the number of table entries required.
148 * The driver reverts to PIO mode for individual requests that exceed
149 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
150 * 100% of all crazy scenarios here is not necessary.
152 * As it turns out though, we must allocate a full 4KB page for this,
153 * so the two PRD tables (ide0 & ide1) will each get half of that,
154 * allowing each to have about 256 entries (8 bytes each) from this.
157 #define PRD_ENTRIES 256
160 * Some more useful definitions
162 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
163 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
166 * Timeouts for various operations:
169 /* spec allows up to 20ms, but CF cards and SSD drives need more */
170 WAIT_DRQ
= 1 * HZ
, /* 1s */
171 /* some laptops are very slow */
172 WAIT_READY
= 5 * HZ
, /* 5s */
173 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
174 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
175 /* worst case when spinning up */
176 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
177 /* maximum wait for an IRQ to happen */
178 WAIT_CMD
= 10 * HZ
, /* 10s */
179 /* Some drives require a longer IRQ timeout. */
180 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
182 * Some drives (for example, Seagate STT3401A Travan) require a very
183 * long timeout, because they don't return an interrupt or clear their
184 * BSY bit until after the command completes (even retension commands).
186 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
187 /* minimum sleep time */
188 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
192 * Op codes for special requests to be handled by ide_special_rq().
193 * Values should be in the range of 0x20 to 0x3f.
195 #define REQ_DRIVE_RESET 0x20
196 #define REQ_DEVSET_EXEC 0x21
197 #define REQ_PARK_HEADS 0x22
198 #define REQ_UNPARK_HEADS 0x23
201 * hwif_chipset_t is used to keep track of the specific hardware
202 * chipset used by each IDE interface, if known.
204 enum { ide_unknown
, ide_generic
, ide_pci
,
205 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
206 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
207 ide_4drives
, ide_pmac
, ide_acorn
,
208 ide_au1xxx
, ide_palm3710
211 typedef u8 hwif_chipset_t
;
214 * Structure to hold all information about the location of this port
218 struct ide_io_ports io_ports
;
219 unsigned long io_ports_array
[IDE_NR_PORTS
];
222 int irq
; /* our irq number */
223 struct device
*dev
, *parent
;
224 unsigned long config
;
227 static inline void ide_std_init_ports(struct ide_hw
*hw
,
228 unsigned long io_addr
,
229 unsigned long ctl_addr
)
233 for (i
= 0; i
<= 7; i
++)
234 hw
->io_ports_array
[i
] = io_addr
++;
236 hw
->io_ports
.ctl_addr
= ctl_addr
;
242 * Now for the data we need to maintain per-drive: ide_drive_t
245 #define ide_scsi 0x21
246 #define ide_disk 0x20
247 #define ide_optical 0x7
248 #define ide_cdrom 0x5
250 #define ide_floppy 0x0
253 * Special Driver Flags
256 IDE_SFLAG_SET_GEOMETRY
= (1 << 0),
257 IDE_SFLAG_RECALIBRATE
= (1 << 1),
258 IDE_SFLAG_SET_MULTMODE
= (1 << 2),
262 * Status returned from various ide_ functions
265 ide_stopped
, /* no drive operation was started */
266 ide_started
, /* a drive operation was started, handler was set */
270 IDE_VALID_ERROR
= (1 << 1),
271 IDE_VALID_FEATURE
= IDE_VALID_ERROR
,
272 IDE_VALID_NSECT
= (1 << 2),
273 IDE_VALID_LBAL
= (1 << 3),
274 IDE_VALID_LBAM
= (1 << 4),
275 IDE_VALID_LBAH
= (1 << 5),
276 IDE_VALID_DEVICE
= (1 << 6),
277 IDE_VALID_LBA
= IDE_VALID_LBAL
|
280 IDE_VALID_OUT_TF
= IDE_VALID_FEATURE
|
283 IDE_VALID_IN_TF
= IDE_VALID_NSECT
|
285 IDE_VALID_OUT_HOB
= IDE_VALID_OUT_TF
,
286 IDE_VALID_IN_HOB
= IDE_VALID_ERROR
|
292 IDE_TFLAG_LBA48
= (1 << 0),
293 IDE_TFLAG_WRITE
= (1 << 1),
294 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 2),
295 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 3),
296 /* force 16-bit I/O operations */
297 IDE_TFLAG_IO_16BIT
= (1 << 4),
298 /* struct ide_cmd was allocated using kmalloc() */
299 IDE_TFLAG_DYN
= (1 << 5),
300 IDE_TFLAG_FS
= (1 << 6),
301 IDE_TFLAG_MULTI_PIO
= (1 << 7),
302 IDE_TFLAG_SET_XFER
= (1 << 8),
306 IDE_FTFLAG_FLAGGED
= (1 << 0),
307 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
308 IDE_FTFLAG_OUT_DATA
= (1 << 2),
309 IDE_FTFLAG_IN_DATA
= (1 << 3),
312 struct ide_taskfile
{
313 u8 data
; /* 0: data byte (for TASKFILE ioctl) */
315 u8 error
; /* read: error */
316 u8 feature
; /* write: feature */
318 u8 nsect
; /* 2: number of sectors */
319 u8 lbal
; /* 3: LBA low */
320 u8 lbam
; /* 4: LBA mid */
321 u8 lbah
; /* 5: LBA high */
322 u8 device
; /* 6: device select */
324 u8 status
; /* read: status */
325 u8 command
; /* write: command */
330 struct ide_taskfile tf
;
331 struct ide_taskfile hob
;
340 u8 ftf_flags
; /* for TASKFILE ioctl */
343 int sg_nents
; /* number of sg entries */
345 int sg_dma_direction
; /* DMA transfer direction */
349 unsigned int last_xfer_len
;
351 struct scatterlist
*cursg
;
352 unsigned int cursg_ofs
;
354 struct request
*rq
; /* copy of request */
357 /* ATAPI packet command flags */
359 /* set when an error is considered normal - no retry (ide-tape) */
360 PC_FLAG_ABORT
= (1 << 0),
361 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
362 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
363 PC_FLAG_DMA_OK
= (1 << 3),
364 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
365 PC_FLAG_DMA_ERROR
= (1 << 5),
366 PC_FLAG_WRITING
= (1 << 6),
369 #define ATAPI_WAIT_PC (60 * HZ)
371 struct ide_atapi_pc
{
372 /* actual packet bytes */
374 /* incremented on each retry */
378 /* bytes to transfer */
381 /* the corresponding request */
387 * those are more or less driver-specific and some of them are subject
388 * to change/removal later.
390 unsigned long timeout
;
396 #ifdef CONFIG_BLK_DEV_IDEACPI
397 struct ide_acpi_drive_link
;
398 struct ide_acpi_hwif_link
;
403 struct ide_disk_ops
{
404 int (*check
)(struct ide_drive_s
*, const char *);
405 int (*get_capacity
)(struct ide_drive_s
*);
406 void (*unlock_native_capacity
)(struct ide_drive_s
*);
407 void (*setup
)(struct ide_drive_s
*);
408 void (*flush
)(struct ide_drive_s
*);
409 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
410 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
412 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
414 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
415 fmode_t
, unsigned int, unsigned long);
418 /* ATAPI device flags */
420 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
423 /* Drive cannot eject the disc. */
424 IDE_AFLAG_NO_EJECT
= (1 << 1),
425 /* Drive is a pre ATAPI 1.2 drive. */
426 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
427 /* TOC addresses are in BCD. */
428 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
429 /* TOC track numbers are in BCD. */
430 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
431 /* Saved TOC information is current. */
432 IDE_AFLAG_TOC_VALID
= (1 << 6),
433 /* We think that the drive door is locked. */
434 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
435 /* SET_CD_SPEED command is unsupported. */
436 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
437 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
438 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
439 IDE_AFLAG_SANYO_3CD
= (1 << 11),
440 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
441 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
442 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
445 /* Avoid commands not supported in Clik drive */
446 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
447 /* Requires BH algorithm for packets */
448 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
449 /* Supports format progress report */
450 IDE_AFLAG_SRFP
= (1 << 17),
453 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
454 /* 0 When the tape position is unknown */
455 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
456 /* Device already opened */
457 IDE_AFLAG_BUSY
= (1 << 20),
458 /* Attempt to auto-detect the current user block size */
459 IDE_AFLAG_DETECT_BS
= (1 << 21),
460 /* Currently on a filemark */
461 IDE_AFLAG_FILEMARK
= (1 << 22),
462 /* 0 = no tape is loaded, so we don't rewind after ejecting */
463 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
465 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
470 /* restore settings after device reset */
471 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
472 /* device is using DMA for read/write */
473 IDE_DFLAG_USING_DMA
= (1 << 1),
474 /* okay to unmask other IRQs */
475 IDE_DFLAG_UNMASK
= (1 << 2),
476 /* don't attempt flushes */
477 IDE_DFLAG_NOFLUSH
= (1 << 3),
479 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
480 /* give potential excess bandwidth */
481 IDE_DFLAG_NICE1
= (1 << 5),
482 /* device is physically present */
483 IDE_DFLAG_PRESENT
= (1 << 6),
484 /* disable Host Protected Area */
485 IDE_DFLAG_NOHPA
= (1 << 7),
486 /* id read from device (synthetic if not set) */
487 IDE_DFLAG_ID_READ
= (1 << 8),
488 IDE_DFLAG_NOPROBE
= (1 << 9),
489 /* need to do check_media_change() */
490 IDE_DFLAG_REMOVABLE
= (1 << 10),
491 /* needed for removable devices */
492 IDE_DFLAG_ATTACH
= (1 << 11),
493 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
494 /* disallow setting unmask bit */
495 IDE_DFLAG_NO_UNMASK
= (1 << 13),
496 /* disallow enabling 32-bit I/O */
497 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
498 /* for removable only: door lock/unlock works */
499 IDE_DFLAG_DOORLOCKING
= (1 << 15),
501 IDE_DFLAG_NODMA
= (1 << 16),
502 /* powermanagement told us not to do anything, so sleep nicely */
503 IDE_DFLAG_BLOCKED
= (1 << 17),
504 /* sleeping & sleep field valid */
505 IDE_DFLAG_SLEEPING
= (1 << 18),
506 IDE_DFLAG_POST_RESET
= (1 << 19),
507 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
508 IDE_DFLAG_LBA48
= (1 << 21),
509 /* status of write cache */
510 IDE_DFLAG_WCACHE
= (1 << 22),
511 /* used for ignoring ATA_DF */
512 IDE_DFLAG_NOWERR
= (1 << 23),
513 /* retrying in PIO */
514 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
515 IDE_DFLAG_LBA
= (1 << 25),
516 /* don't unload heads */
517 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
518 /* heads unloaded, please don't reset port */
519 IDE_DFLAG_PARKED
= (1 << 27),
520 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
522 IDE_DFLAG_WP
= (1 << 29),
523 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
524 IDE_DFLAG_NIEN_QUIRK
= (1 << 31),
528 char name
[4]; /* drive name, such as "hda" */
529 char driver_req
[10]; /* requests specific driver */
531 struct request_queue
*queue
; /* request queue */
533 bool (*prep_rq
)(struct ide_drive_s
*, struct request
*);
535 struct blk_mq_tag_set tag_set
;
537 struct request
*rq
; /* current request */
538 void *driver_data
; /* extra driver data */
539 u16
*id
; /* identification info */
540 #ifdef CONFIG_IDE_PROC_FS
541 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
542 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
544 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
546 const struct ide_disk_ops
*disk_ops
;
548 unsigned long dev_flags
;
550 unsigned long sleep
; /* sleep until this time */
551 unsigned long timeout
; /* max time to wait for irq */
553 u8 special_flags
; /* special action flags */
555 u8 select
; /* basic drive/head select reg value */
556 u8 retry_pio
; /* retrying dma capable host in pio */
557 u8 waiting_for_dma
; /* dma currently in progress */
558 u8 dma
; /* atapi dma flag */
560 u8 init_speed
; /* transfer rate set at boot */
561 u8 current_speed
; /* current transfer rate set */
562 u8 desired_speed
; /* desired transfer rate set */
563 u8 pio_mode
; /* for ->set_pio_mode _only_ */
564 u8 dma_mode
; /* for ->set_dma_mode _only_ */
565 u8 dn
; /* now wide spread use */
566 u8 acoustic
; /* acoustic management */
567 u8 media
; /* disk, cdrom, tape, floppy, ... */
568 u8 ready_stat
; /* min status value for drive ready */
569 u8 mult_count
; /* current multiple sector setting */
570 u8 mult_req
; /* requested multiple sector setting */
571 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
572 u8 bad_wstat
; /* used for ignoring ATA_DF */
573 u8 head
; /* "real" number of heads */
574 u8 sect
; /* "real" sectors per track */
575 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
576 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
578 /* delay this long before sending packet command */
581 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
582 unsigned int cyl
; /* "real" number of cyls */
583 void *drive_data
; /* used by set_pio_mode/dev_select() */
584 unsigned int failures
; /* current failure count */
585 unsigned int max_failures
; /* maximum allowed failure count */
586 u64 probed_capacity
;/* initial/native media capacity */
587 u64 capacity64
; /* total number of sectors */
589 int lun
; /* logical unit */
590 int crc_count
; /* crc counter to reduce drive speed */
592 unsigned long debug_mask
; /* debugging levels switch */
594 #ifdef CONFIG_BLK_DEV_IDEACPI
595 struct ide_acpi_drive_link
*acpidata
;
597 struct list_head list
;
598 struct device gendev
;
599 struct completion gendev_rel_comp
; /* to deal with device release() */
601 /* current packet command */
602 struct ide_atapi_pc
*pc
;
604 /* last failed packet command */
605 struct ide_atapi_pc
*failed_pc
;
607 /* callback for packet commands */
608 int (*pc_callback
)(struct ide_drive_s
*, int);
610 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
612 unsigned long atapi_flags
;
614 struct ide_atapi_pc request_sense_pc
;
616 /* current sense rq and buffer */
618 bool sense_rq_active
;
619 struct request
*sense_rq
;
620 struct request_sense sense_data
;
622 /* async sense insertion */
623 struct work_struct rq_work
;
624 struct list_head rq_list
;
627 typedef struct ide_drive_s ide_drive_t
;
629 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
631 #define to_ide_drv(obj, cont_type) \
632 container_of(obj, struct cont_type, dev)
634 #define ide_drv_g(disk, cont_type) \
635 container_of((disk)->private_data, struct cont_type, driver)
637 struct ide_port_info
;
640 void (*exec_command
)(struct hwif_s
*, u8
);
641 u8 (*read_status
)(struct hwif_s
*);
642 u8 (*read_altstatus
)(struct hwif_s
*);
643 void (*write_devctl
)(struct hwif_s
*, u8
);
645 void (*dev_select
)(ide_drive_t
*);
646 void (*tf_load
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
647 void (*tf_read
)(ide_drive_t
*, struct ide_taskfile
*, u8
);
649 void (*input_data
)(ide_drive_t
*, struct ide_cmd
*,
650 void *, unsigned int);
651 void (*output_data
)(ide_drive_t
*, struct ide_cmd
*,
652 void *, unsigned int);
655 extern const struct ide_tp_ops default_tp_ops
;
658 * struct ide_port_ops - IDE port operations
660 * @init_dev: host specific initialization of a device
661 * @set_pio_mode: routine to program host for PIO mode
662 * @set_dma_mode: routine to program host for DMA mode
663 * @reset_poll: chipset polling based on hba specifics
664 * @pre_reset: chipset specific changes to default for device-hba resets
665 * @resetproc: routine to reset controller after a disk reset
666 * @maskproc: special host masking for drive selection
667 * @quirkproc: check host's drive quirk list
668 * @clear_irq: clear IRQ
670 * @mdma_filter: filter MDMA modes
671 * @udma_filter: filter UDMA modes
673 * @cable_detect: detect cable type
675 struct ide_port_ops
{
676 void (*init_dev
)(ide_drive_t
*);
677 void (*set_pio_mode
)(struct hwif_s
*, ide_drive_t
*);
678 void (*set_dma_mode
)(struct hwif_s
*, ide_drive_t
*);
679 blk_status_t (*reset_poll
)(ide_drive_t
*);
680 void (*pre_reset
)(ide_drive_t
*);
681 void (*resetproc
)(ide_drive_t
*);
682 void (*maskproc
)(ide_drive_t
*, int);
683 void (*quirkproc
)(ide_drive_t
*);
684 void (*clear_irq
)(ide_drive_t
*);
685 int (*test_irq
)(struct hwif_s
*);
687 u8 (*mdma_filter
)(ide_drive_t
*);
688 u8 (*udma_filter
)(ide_drive_t
*);
690 u8 (*cable_detect
)(struct hwif_s
*);
694 void (*dma_host_set
)(struct ide_drive_s
*, int);
695 int (*dma_setup
)(struct ide_drive_s
*, struct ide_cmd
*);
696 void (*dma_start
)(struct ide_drive_s
*);
697 int (*dma_end
)(struct ide_drive_s
*);
698 int (*dma_test_irq
)(struct ide_drive_s
*);
699 void (*dma_lost_irq
)(struct ide_drive_s
*);
700 /* below ones are optional */
701 int (*dma_check
)(struct ide_drive_s
*, struct ide_cmd
*);
702 int (*dma_timer_expiry
)(struct ide_drive_s
*);
703 void (*dma_clear
)(struct ide_drive_s
*);
705 * The following method is optional and only required to be
706 * implemented for the SFF-8038i compatible controllers.
708 u8 (*dma_sff_read_status
)(struct hwif_s
*);
712 IDE_PFLAG_PROBING
= (1 << 0),
717 typedef struct hwif_s
{
718 struct hwif_s
*mate
; /* other hwif from same PCI chip */
719 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
721 struct ide_host
*host
;
723 char name
[6]; /* name of interface, eg. "ide0" */
725 struct ide_io_ports io_ports
;
727 unsigned long sata_scr
[SATA_NR_PORTS
];
729 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
731 unsigned long port_flags
;
733 u8 major
; /* our major number */
734 u8 index
; /* 0 for ide0; 1 for ide1; ... */
735 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
745 u8 cbl
; /* cable type */
747 hwif_chipset_t chipset
; /* sub-module for tuning.. */
751 void (*rw_disk
)(ide_drive_t
*, struct request
*);
753 const struct ide_tp_ops
*tp_ops
;
754 const struct ide_port_ops
*port_ops
;
755 const struct ide_dma_ops
*dma_ops
;
757 /* dma physical region descriptor table (cpu view) */
758 unsigned int *dmatable_cpu
;
759 /* dma physical region descriptor table (dma view) */
760 dma_addr_t dmatable_dma
;
762 /* maximum number of PRD table entries */
764 /* PRD entry size in bytes */
767 /* Scatter-gather list used to build the above */
768 struct scatterlist
*sg_table
;
769 int sg_max_nents
; /* Maximum number of entries in it */
771 struct ide_cmd cmd
; /* current command */
773 int rqsize
; /* max sectors per request */
774 int irq
; /* our irq number */
776 unsigned long dma_base
; /* base addr for dma ports */
778 unsigned long config_data
; /* for use by chipset-specific code */
779 unsigned long select_data
; /* for use by chipset-specific code */
781 unsigned long extra_base
; /* extra addr for dma ports */
782 unsigned extra_ports
; /* number of extra dma ports */
784 unsigned present
: 1; /* this interface exists */
785 unsigned busy
: 1; /* serializes devices on a port */
787 struct device gendev
;
788 struct device
*portdev
;
790 struct completion gendev_rel_comp
; /* To deal with device release() */
792 void *hwif_data
; /* extra hwif data */
794 #ifdef CONFIG_BLK_DEV_IDEACPI
795 struct ide_acpi_hwif_link
*acpidata
;
798 /* IRQ handler, if active */
799 ide_startstop_t (*handler
)(ide_drive_t
*);
801 /* BOOL: polling active & poll_timeout field valid */
802 unsigned int polling
: 1;
805 ide_drive_t
*cur_dev
;
807 /* current request */
811 struct timer_list timer
;
812 /* timeout value during long polls */
813 unsigned long poll_timeout
;
814 /* queried upon timeouts */
815 int (*expiry
)(ide_drive_t
*);
821 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
823 #define MAX_HOST_PORTS 4
826 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
827 unsigned int n_ports
;
828 struct device
*dev
[2];
830 int (*init_chipset
)(struct pci_dev
*);
832 void (*get_lock
)(irq_handler_t
, void *);
833 void (*release_lock
)(void);
835 irq_handler_t irq_handler
;
837 unsigned long host_flags
;
842 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
844 /* used for hosts requiring serialization */
845 volatile unsigned long host_busy
;
848 #define IDE_HOST_BUSY 0
851 * internal ide interrupt handler type
853 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
854 typedef int (ide_expiry_t
)(ide_drive_t
*);
856 /* used by ide-cd, ide-floppy, etc. */
857 typedef void (xfer_func_t
)(ide_drive_t
*, struct ide_cmd
*, void *, unsigned);
859 extern struct mutex ide_setting_mtx
;
862 * configurable drive settings
865 #define DS_SYNC (1 << 0)
868 int (*get
)(ide_drive_t
*);
869 int (*set
)(ide_drive_t
*, int);
873 #define __DEVSET(_flags, _get, _set) { \
879 #define ide_devset_get(name, field) \
880 static int get_##name(ide_drive_t *drive) \
882 return drive->field; \
885 #define ide_devset_set(name, field) \
886 static int set_##name(ide_drive_t *drive, int arg) \
888 drive->field = arg; \
892 #define ide_devset_get_flag(name, flag) \
893 static int get_##name(ide_drive_t *drive) \
895 return !!(drive->dev_flags & flag); \
898 #define ide_devset_set_flag(name, flag) \
899 static int set_##name(ide_drive_t *drive, int arg) \
902 drive->dev_flags |= flag; \
904 drive->dev_flags &= ~flag; \
908 #define __IDE_DEVSET(_name, _flags, _get, _set) \
909 const struct ide_devset ide_devset_##_name = \
910 __DEVSET(_flags, _get, _set)
912 #define IDE_DEVSET(_name, _flags, _get, _set) \
913 static __IDE_DEVSET(_name, _flags, _get, _set)
915 #define ide_devset_rw(_name, _func) \
916 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
918 #define ide_devset_w(_name, _func) \
919 IDE_DEVSET(_name, 0, NULL, set_##_func)
921 #define ide_ext_devset_rw(_name, _func) \
922 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
924 #define ide_ext_devset_rw_sync(_name, _func) \
925 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
927 #define ide_decl_devset(_name) \
928 extern const struct ide_devset ide_devset_##_name
930 ide_decl_devset(io_32bit
);
931 ide_decl_devset(keepsettings
);
932 ide_decl_devset(pio_mode
);
933 ide_decl_devset(unmaskirq
);
934 ide_decl_devset(using_dma
);
936 #ifdef CONFIG_IDE_PROC_FS
938 * /proc/ide interface
941 #define ide_devset_rw_field(_name, _field) \
942 ide_devset_get(_name, _field); \
943 ide_devset_set(_name, _field); \
944 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
946 #define ide_devset_rw_flag(_name, _field) \
947 ide_devset_get_flag(_name, _field); \
948 ide_devset_set_flag(_name, _field); \
949 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
951 struct ide_proc_devset
{
953 const struct ide_devset
*setting
;
955 int (*mulf
)(ide_drive_t
*);
956 int (*divf
)(ide_drive_t
*);
959 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
960 .name = __stringify(_name), \
961 .setting = &ide_devset_##_name, \
968 #define IDE_PROC_DEVSET(_name, _min, _max) \
969 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
974 int (*show
)(struct seq_file
*, void *);
977 void proc_ide_create(void);
978 void proc_ide_destroy(void);
979 void ide_proc_register_port(ide_hwif_t
*);
980 void ide_proc_port_register_devices(ide_hwif_t
*);
981 void ide_proc_unregister_device(ide_drive_t
*);
982 void ide_proc_unregister_port(ide_hwif_t
*);
983 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
984 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
986 int ide_capacity_proc_show(struct seq_file
*m
, void *v
);
987 int ide_geometry_proc_show(struct seq_file
*m
, void *v
);
989 static inline void proc_ide_create(void) { ; }
990 static inline void proc_ide_destroy(void) { ; }
991 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
992 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
993 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
994 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
995 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
996 struct ide_driver
*driver
) { ; }
997 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
998 struct ide_driver
*driver
) { ; }
1002 /* enter/exit functions */
1003 IDE_DBG_FUNC
= (1 << 0),
1004 /* sense key/asc handling */
1005 IDE_DBG_SENSE
= (1 << 1),
1006 /* packet commands handling */
1007 IDE_DBG_PC
= (1 << 2),
1008 /* request handling */
1009 IDE_DBG_RQ
= (1 << 3),
1010 /* driver probing/setup */
1011 IDE_DBG_PROBE
= (1 << 4),
1014 /* DRV_NAME has to be defined in the driver before using the macro below */
1015 #define __ide_debug_log(lvl, fmt, args...) \
1017 if (unlikely(drive->debug_mask & lvl)) \
1018 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1019 __func__, ## args); \
1023 * Power Management state machine (rq->pm->pm_step).
1025 * For each step, the core calls ide_start_power_step() first.
1027 * - ide_stopped : In this case, the core calls us back again unless
1028 * step have been set to ide_power_state_completed.
1029 * - ide_started : In this case, the channel is left busy until an
1030 * async event (interrupt) occurs.
1031 * Typically, ide_start_power_step() will issue a taskfile request with
1034 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1035 * with the error code if any. This routine should update the step value
1036 * and return. It should not start a new request. The core will call
1037 * ide_start_power_step() for the new step value, unless step have been
1038 * set to IDE_PM_COMPLETED.
1041 IDE_PM_START_SUSPEND
,
1042 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1045 IDE_PM_START_RESUME
,
1046 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1053 int generic_ide_suspend(struct device
*, pm_message_t
);
1054 int generic_ide_resume(struct device
*);
1056 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1057 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1058 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1059 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1062 * Subdrivers support.
1064 * The gendriver.owner field should be set to the module owner of this driver.
1065 * The gendriver.name field should be set to the name of this driver
1068 const char *version
;
1069 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1070 struct device_driver gen_driver
;
1071 int (*probe
)(ide_drive_t
*);
1072 void (*remove
)(ide_drive_t
*);
1073 void (*resume
)(ide_drive_t
*);
1074 void (*shutdown
)(ide_drive_t
*);
1075 #ifdef CONFIG_IDE_PROC_FS
1076 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1077 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1081 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1083 int ide_device_get(ide_drive_t
*);
1084 void ide_device_put(ide_drive_t
*);
1086 struct ide_ioctl_devset
{
1087 unsigned int get_ioctl
;
1088 unsigned int set_ioctl
;
1089 const struct ide_devset
*setting
;
1092 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1093 unsigned long, const struct ide_ioctl_devset
*);
1095 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1097 extern int ide_vlb_clk
;
1098 extern int ide_pci_clk
;
1100 int ide_end_rq(ide_drive_t
*, struct request
*, blk_status_t
, unsigned int);
1101 void ide_kill_rq(ide_drive_t
*, struct request
*);
1102 void ide_insert_request_head(ide_drive_t
*, struct request
*);
1104 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1105 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int);
1107 void ide_execute_command(ide_drive_t
*, struct ide_cmd
*, ide_handler_t
*,
1110 void ide_pad_transfer(ide_drive_t
*, int, int);
1112 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1114 void ide_fix_driveid(u16
*);
1116 extern void ide_fixstring(u8
*, const int, const int);
1118 int ide_busy_sleep(ide_drive_t
*, unsigned long, int);
1120 int __ide_wait_stat(ide_drive_t
*, u8
, u8
, unsigned long, u8
*);
1121 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1123 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1124 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1126 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1128 extern int ide_devset_execute(ide_drive_t
*drive
,
1129 const struct ide_devset
*setting
, int arg
);
1131 void ide_complete_cmd(ide_drive_t
*, struct ide_cmd
*, u8
, u8
);
1132 int ide_complete_rq(ide_drive_t
*, blk_status_t
, unsigned int);
1134 void ide_tf_readback(ide_drive_t
*drive
, struct ide_cmd
*cmd
);
1135 void ide_tf_dump(const char *, struct ide_cmd
*);
1137 void ide_exec_command(ide_hwif_t
*, u8
);
1138 u8
ide_read_status(ide_hwif_t
*);
1139 u8
ide_read_altstatus(ide_hwif_t
*);
1140 void ide_write_devctl(ide_hwif_t
*, u8
);
1142 void ide_dev_select(ide_drive_t
*);
1143 void ide_tf_load(ide_drive_t
*, struct ide_taskfile
*, u8
);
1144 void ide_tf_read(ide_drive_t
*, struct ide_taskfile
*, u8
);
1146 void ide_input_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1147 void ide_output_data(ide_drive_t
*, struct ide_cmd
*, void *, unsigned int);
1149 void SELECT_MASK(ide_drive_t
*, int);
1151 u8
ide_read_error(ide_drive_t
*);
1152 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1154 int ide_check_ireason(ide_drive_t
*, struct request
*, int, int, int);
1156 int ide_check_atapi_device(ide_drive_t
*, const char *);
1158 void ide_init_pc(struct ide_atapi_pc
*);
1160 /* Disk head parking */
1161 extern wait_queue_head_t ide_park_wq
;
1162 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1164 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1165 const char *buf
, size_t len
);
1168 * Special requests for ide-tape block device strategy routine.
1170 * In order to service a character device command, we add special requests to
1171 * the tail of our block device request queue and wait for their completion.
1174 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1175 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1176 REQ_IDETAPE_READ
= (1 << 2),
1177 REQ_IDETAPE_WRITE
= (1 << 3),
1180 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*,
1181 void *, unsigned int);
1183 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1184 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1185 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1186 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1187 void ide_retry_pc(ide_drive_t
*drive
);
1189 void ide_prep_sense(ide_drive_t
*drive
, struct request
*rq
);
1190 int ide_queue_sense_rq(ide_drive_t
*drive
, void *special
);
1192 int ide_cd_expiry(ide_drive_t
*);
1194 int ide_cd_get_xferlen(struct request
*);
1196 ide_startstop_t
ide_issue_pc(ide_drive_t
*, struct ide_cmd
*);
1198 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, struct ide_cmd
*);
1200 void ide_pio_bytes(ide_drive_t
*, struct ide_cmd
*, unsigned int, unsigned int);
1202 void ide_finish_cmd(ide_drive_t
*, struct ide_cmd
*, u8
);
1204 int ide_raw_taskfile(ide_drive_t
*, struct ide_cmd
*, u8
*, u16
);
1205 int ide_no_data_taskfile(ide_drive_t
*, struct ide_cmd
*);
1207 int ide_taskfile_ioctl(ide_drive_t
*, unsigned long);
1209 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*, int);
1211 extern int ide_driveid_update(ide_drive_t
*);
1212 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1213 extern u8
eighty_ninty_three (ide_drive_t
*);
1214 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1216 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1218 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1220 extern void ide_timer_expiry(struct timer_list
*t
);
1221 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1222 extern blk_status_t
ide_queue_rq(struct blk_mq_hw_ctx
*, const struct blk_mq_queue_data
*);
1223 extern blk_status_t
ide_issue_rq(ide_drive_t
*, struct request
*, bool);
1224 extern void ide_requeue_and_plug(ide_drive_t
*drive
, struct request
*rq
);
1226 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1228 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1229 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1230 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1232 #define ide_pci_register_driver(d) pci_register_driver(d)
1235 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1237 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1242 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1243 struct ide_hw
*, struct ide_hw
**);
1244 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1246 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1247 int ide_pci_set_master(struct pci_dev
*, const char *);
1248 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1249 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1250 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1252 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1253 const struct ide_port_info
*d
)
1259 struct ide_pci_enablebit
{
1260 u8 reg
; /* byte pci reg holding the enable-bit */
1261 u8 mask
; /* mask to isolate the enable-bit */
1262 u8 val
; /* value of masked reg when "enabled" */
1266 /* Uses ISA control ports not PCI ones. */
1267 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1268 /* single port device */
1269 IDE_HFLAG_SINGLE
= (1 << 1),
1270 /* don't use legacy PIO blacklist */
1271 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1272 /* set for the second port of QD65xx */
1273 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1274 /* use PIO8/9 for prefetch off/on */
1275 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1276 /* use PIO6/7 for fast-devsel off/on */
1277 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1278 /* use 100-102 and 200-202 PIO values to set DMA modes */
1279 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1281 * keep DMA setting when programming PIO mode, may be used only
1282 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1284 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1285 /* program host for the transfer mode after programming device */
1286 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1287 /* don't program host/device for the transfer mode ("smart" hosts) */
1288 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1289 /* trust BIOS for programming chipset/device for DMA */
1290 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1291 /* host is CS5510/CS5520 */
1292 IDE_HFLAG_CS5520
= (1 << 11),
1293 /* ATAPI DMA is unsupported */
1294 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1295 /* set if host is a "non-bootable" controller */
1296 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1297 /* host doesn't support DMA */
1298 IDE_HFLAG_NO_DMA
= (1 << 14),
1299 /* check if host is PCI IDE device before allowing DMA */
1300 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1301 /* host uses MMIO */
1302 IDE_HFLAG_MMIO
= (1 << 16),
1304 IDE_HFLAG_NO_LBA48
= (1 << 17),
1306 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1307 /* data FIFO is cleared by an error */
1308 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1309 /* serialize ports */
1310 IDE_HFLAG_SERIALIZE
= (1 << 20),
1311 /* host is DTC2278 */
1312 IDE_HFLAG_DTC2278
= (1 << 21),
1313 /* 4 devices on a single set of I/O ports */
1314 IDE_HFLAG_4DRIVES
= (1 << 22),
1315 /* host is TRM290 */
1316 IDE_HFLAG_TRM290
= (1 << 23),
1317 /* use 32-bit I/O ops */
1318 IDE_HFLAG_IO_32BIT
= (1 << 24),
1320 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1321 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1322 /* serialize ports if DMA is possible (for sl82c105) */
1323 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1324 /* force host out of "simplex" mode */
1325 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1326 /* DSC overlap is unsupported */
1327 IDE_HFLAG_NO_DSC
= (1 << 29),
1328 /* never use 32-bit I/O ops */
1329 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1330 /* never unmask IRQs */
1331 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1334 #ifdef CONFIG_BLK_DEV_OFFBOARD
1335 # define IDE_HFLAG_OFF_BOARD 0
1337 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1340 struct ide_port_info
{
1343 int (*init_chipset
)(struct pci_dev
*);
1345 void (*get_lock
)(irq_handler_t
, void *);
1346 void (*release_lock
)(void);
1348 void (*init_iops
)(ide_hwif_t
*);
1349 void (*init_hwif
)(ide_hwif_t
*);
1350 int (*init_dma
)(ide_hwif_t
*,
1351 const struct ide_port_info
*);
1353 const struct ide_tp_ops
*tp_ops
;
1354 const struct ide_port_ops
*port_ops
;
1355 const struct ide_dma_ops
*dma_ops
;
1357 struct ide_pci_enablebit enablebits
[2];
1359 hwif_chipset_t chipset
;
1361 u16 max_sectors
; /* if < than the default one */
1374 * State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
1377 struct ide_pm_state
{
1378 /* PM state machine step value, currently driver specific */
1380 /* requested PM state value (S1, S2, S3, S4, ...) */
1382 void* data
; /* for driver use */
1386 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1387 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1388 const struct ide_port_info
*, void *);
1389 void ide_pci_remove(struct pci_dev
*);
1392 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1393 int ide_pci_resume(struct pci_dev
*);
1395 #define ide_pci_suspend NULL
1396 #define ide_pci_resume NULL
1399 void ide_map_sg(ide_drive_t
*, struct ide_cmd
*);
1400 void ide_init_sg_cmd(struct ide_cmd
*, unsigned int);
1402 #define BAD_DMA_DRIVE 0
1403 #define GOOD_DMA_DRIVE 1
1405 struct drive_list_entry
{
1406 const char *id_model
;
1407 const char *id_firmware
;
1410 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1412 #ifdef CONFIG_BLK_DEV_IDEDMA
1413 int ide_dma_good_drive(ide_drive_t
*);
1414 int __ide_dma_bad_drive(ide_drive_t
*);
1416 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1418 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1420 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1423 void ide_dma_off_quietly(ide_drive_t
*);
1424 void ide_dma_off(ide_drive_t
*);
1425 void ide_dma_on(ide_drive_t
*);
1426 int ide_set_dma(ide_drive_t
*);
1427 void ide_check_dma_crc(ide_drive_t
*);
1428 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1430 int ide_allocate_dma_engine(ide_hwif_t
*);
1431 void ide_release_dma_engine(ide_hwif_t
*);
1433 int ide_dma_prepare(ide_drive_t
*, struct ide_cmd
*);
1434 void ide_dma_unmap_sg(ide_drive_t
*, struct ide_cmd
*);
1436 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1437 int config_drive_for_dma(ide_drive_t
*);
1438 int ide_build_dmatable(ide_drive_t
*, struct ide_cmd
*);
1439 void ide_dma_host_set(ide_drive_t
*, int);
1440 int ide_dma_setup(ide_drive_t
*, struct ide_cmd
*);
1441 extern void ide_dma_start(ide_drive_t
*);
1442 int ide_dma_end(ide_drive_t
*);
1443 int ide_dma_test_irq(ide_drive_t
*);
1444 int ide_dma_sff_timer_expiry(ide_drive_t
*);
1445 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1446 extern const struct ide_dma_ops sff_dma_ops
;
1448 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1449 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1451 void ide_dma_lost_irq(ide_drive_t
*);
1452 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1455 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1456 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1457 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1458 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1459 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1460 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1461 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1462 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1463 static inline ide_startstop_t
ide_dma_intr(ide_drive_t
*drive
) { return ide_stopped
; }
1464 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1465 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1466 static inline int ide_dma_prepare(ide_drive_t
*drive
,
1467 struct ide_cmd
*cmd
) { return 1; }
1468 static inline void ide_dma_unmap_sg(ide_drive_t
*drive
,
1469 struct ide_cmd
*cmd
) { ; }
1470 #endif /* CONFIG_BLK_DEV_IDEDMA */
1472 #ifdef CONFIG_BLK_DEV_IDEACPI
1473 int ide_acpi_init(void);
1474 bool ide_port_acpi(ide_hwif_t
*hwif
);
1475 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1476 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1477 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1478 void ide_acpi_init_port(ide_hwif_t
*);
1479 void ide_acpi_port_init_devices(ide_hwif_t
*);
1480 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1482 static inline int ide_acpi_init(void) { return 0; }
1483 static inline bool ide_port_acpi(ide_hwif_t
*hwif
) { return 0; }
1484 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1485 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1486 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1487 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1488 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1489 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1492 void ide_register_region(struct gendisk
*);
1493 void ide_unregister_region(struct gendisk
*);
1495 void ide_check_nien_quirk_list(ide_drive_t
*);
1496 void ide_undecoded_slave(ide_drive_t
*);
1498 void ide_port_apply_params(ide_hwif_t
*);
1499 int ide_sysfs_register_port(ide_hwif_t
*);
1501 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, struct ide_hw
**,
1503 void ide_host_free(struct ide_host
*);
1504 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1506 int ide_host_add(const struct ide_port_info
*, struct ide_hw
**, unsigned int,
1507 struct ide_host
**);
1508 void ide_host_remove(struct ide_host
*);
1509 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1510 void ide_port_unregister_devices(ide_hwif_t
*);
1511 void ide_port_scan(ide_hwif_t
*);
1513 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1515 return hwif
->hwif_data
;
1518 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1520 hwif
->hwif_data
= data
;
1523 u64
ide_get_lba_addr(struct ide_cmd
*, int);
1524 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1529 u16 act8b
; /* t2 for 8-bit io */
1530 u16 rec8b
; /* t2i for 8-bit io */
1531 u16 cyc8b
; /* t0 for 8-bit io */
1532 u16 active
; /* t2 or tD */
1533 u16 recover
; /* t2i or tK */
1535 u16 udma
; /* t2CYCTYP/2 */
1539 IDE_TIMING_SETUP
= (1 << 0),
1540 IDE_TIMING_ACT8B
= (1 << 1),
1541 IDE_TIMING_REC8B
= (1 << 2),
1542 IDE_TIMING_CYC8B
= (1 << 3),
1543 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1545 IDE_TIMING_ACTIVE
= (1 << 4),
1546 IDE_TIMING_RECOVER
= (1 << 5),
1547 IDE_TIMING_CYCLE
= (1 << 6),
1548 IDE_TIMING_UDMA
= (1 << 7),
1549 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1550 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1551 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1554 struct ide_timing
*ide_timing_find_mode(u8
);
1555 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1556 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1557 struct ide_timing
*, unsigned int);
1558 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1560 #ifdef CONFIG_IDE_XFER_MODE
1561 int ide_scan_pio_blacklist(char *);
1562 const char *ide_xfer_verbose(u8
);
1563 int ide_pio_need_iordy(ide_drive_t
*, const u8
);
1564 int ide_set_pio_mode(ide_drive_t
*, u8
);
1565 int ide_set_dma_mode(ide_drive_t
*, u8
);
1566 void ide_set_pio(ide_drive_t
*, u8
);
1567 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1569 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1570 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1573 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1575 ide_set_pio(drive
, 255);
1578 char *ide_media_string(ide_drive_t
*);
1580 extern const struct attribute_group
*ide_dev_groups
[];
1581 extern struct bus_type ide_bus_type
;
1582 extern struct class *ide_port_class
;
1584 static inline void ide_dump_identify(u8
*id
)
1586 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1589 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1591 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1594 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1596 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1598 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1601 static inline void *ide_get_drivedata(ide_drive_t
*drive
)
1603 return drive
->drive_data
;
1606 static inline void ide_set_drivedata(ide_drive_t
*drive
, void *data
)
1608 drive
->drive_data
= data
;
1611 #define ide_port_for_each_dev(i, dev, port) \
1612 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1614 #define ide_port_for_each_present_dev(i, dev, port) \
1615 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1616 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1618 #define ide_host_for_each_port(i, port, host) \
1619 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)