4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
27 #include <asm/mutex.h>
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
40 #define IDE_NO_IRQ (-1)
42 typedef unsigned char byte
; /* used everywhere */
45 * Probably not wise to fiddle with these
47 #define ERROR_MAX 8 /* Max read/write errors per sector */
48 #define ERROR_RESET 3 /* Reset controller every 4th retry */
49 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
51 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
52 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
55 * Definitions for accessing IDE controller registers
57 #define IDE_NR_PORTS (10)
60 unsigned long data_addr
;
63 unsigned long error_addr
; /* read: error */
64 unsigned long feature_addr
; /* write: feature */
67 unsigned long nsect_addr
;
68 unsigned long lbal_addr
;
69 unsigned long lbam_addr
;
70 unsigned long lbah_addr
;
72 unsigned long device_addr
;
75 unsigned long status_addr
; /* read: status */
76 unsigned long command_addr
; /* write: command */
79 unsigned long ctl_addr
;
81 unsigned long irq_addr
;
84 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
86 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
87 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
88 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
89 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
91 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
93 #define SATA_NR_PORTS (3) /* 16 possible ?? */
95 #define SATA_STATUS_OFFSET (0)
96 #define SATA_ERROR_OFFSET (1)
97 #define SATA_CONTROL_OFFSET (2)
100 * Our Physical Region Descriptor (PRD) table should be large enough
101 * to handle the biggest I/O request we are likely to see. Since requests
102 * can have no more than 256 sectors, and since the typical blocksize is
103 * two or more sectors, we could get by with a limit of 128 entries here for
104 * the usual worst case. Most requests seem to include some contiguous blocks,
105 * further reducing the number of table entries required.
107 * The driver reverts to PIO mode for individual requests that exceed
108 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
109 * 100% of all crazy scenarios here is not necessary.
111 * As it turns out though, we must allocate a full 4KB page for this,
112 * so the two PRD tables (ide0 & ide1) will each get half of that,
113 * allowing each to have about 256 entries (8 bytes each) from this.
116 #define PRD_ENTRIES 256
119 * Some more useful definitions
121 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
122 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
123 #define SECTOR_SIZE 512
125 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
128 * Timeouts for various operations:
131 /* spec allows up to 20ms */
132 WAIT_DRQ
= HZ
/ 10, /* 100ms */
133 /* some laptops are very slow */
134 WAIT_READY
= 5 * HZ
, /* 5s */
135 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
136 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
137 /* worst case when spinning up */
138 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
139 /* maximum wait for an IRQ to happen */
140 WAIT_CMD
= 10 * HZ
, /* 10s */
141 /* Some drives require a longer IRQ timeout. */
142 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
144 * Some drives (for example, Seagate STT3401A Travan) require a very
145 * long timeout, because they don't return an interrupt or clear their
146 * BSY bit until after the command completes (even retension commands).
148 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
149 /* minimum sleep time */
150 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
154 * Op codes for special requests to be handled by ide_special_rq().
155 * Values should be in the range of 0x20 to 0x3f.
157 #define REQ_DRIVE_RESET 0x20
158 #define REQ_DEVSET_EXEC 0x21
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_rz1000
, ide_trm290
,
174 ide_cmd646
, ide_cy82c693
, ide_4drives
,
176 ide_au1xxx
, ide_palm3710
179 typedef u8 hwif_chipset_t
;
182 * Structure to hold all information about the location of this port
184 typedef struct hw_regs_s
{
186 struct ide_io_ports io_ports
;
187 unsigned long io_ports_array
[IDE_NR_PORTS
];
190 int irq
; /* our irq number */
191 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
192 hwif_chipset_t chipset
;
193 struct device
*dev
, *parent
;
194 unsigned long config
;
197 void ide_init_port_data(struct hwif_s
*, unsigned int);
198 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
200 static inline void ide_std_init_ports(hw_regs_t
*hw
,
201 unsigned long io_addr
,
202 unsigned long ctl_addr
)
206 for (i
= 0; i
<= 7; i
++)
207 hw
->io_ports_array
[i
] = io_addr
++;
209 hw
->io_ports
.ctl_addr
= ctl_addr
;
212 /* for IDE PCI controllers in legacy mode, temporary */
213 static inline int __ide_default_irq(unsigned long base
)
217 case 0x1f0: return isa_irq_to_vector(14);
218 case 0x170: return isa_irq_to_vector(15);
220 case 0x1f0: return 14;
221 case 0x170: return 15;
227 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
228 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
229 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
232 #include <asm-generic/ide_iops.h>
237 /* Currently only m68k, apus and m8xx need it */
238 #ifndef IDE_ARCH_ACK_INTR
239 # define ide_ack_intr(hwif) (1)
242 /* Currently only Atari needs it */
243 #ifndef IDE_ARCH_LOCK
244 # define ide_release_lock() do {} while (0)
245 # define ide_get_lock(hdlr, data) do {} while (0)
246 #endif /* IDE_ARCH_LOCK */
249 * Now for the data we need to maintain per-drive: ide_drive_t
252 #define ide_scsi 0x21
253 #define ide_disk 0x20
254 #define ide_optical 0x7
255 #define ide_cdrom 0x5
257 #define ide_floppy 0x0
260 * Special Driver Flags
262 * set_geometry : respecify drive geometry
263 * recalibrate : seek to cyl 0
264 * set_multmode : set multmode count
265 * set_tune : tune interface for drive
266 * serviced : service command
272 unsigned set_geometry
: 1;
273 unsigned recalibrate
: 1;
274 unsigned set_multmode
: 1;
275 unsigned set_tune
: 1;
276 unsigned serviced
: 1;
277 unsigned reserved
: 3;
282 * ATA-IDE Select Register, aka Device-Head
284 * head : always zeros here
285 * unit : drive select number: 0/1
287 * lba : using LBA instead of CHS
293 #if defined(__LITTLE_ENDIAN_BITFIELD)
299 #elif defined(__BIG_ENDIAN_BITFIELD)
306 #error "Please fix <asm/byteorder.h>"
309 } select_t
, ata_select_t
;
312 * Status returned from various ide_ functions
315 ide_stopped
, /* no drive operation was started */
316 ide_started
, /* a drive operation was started, handler was set */
319 /* ATAPI packet command flags */
321 /* set when an error is considered normal - no retry (ide-tape) */
322 PC_FLAG_ABORT
= (1 << 0),
323 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
324 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
325 PC_FLAG_DMA_OK
= (1 << 3),
326 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
327 PC_FLAG_DMA_ERROR
= (1 << 5),
328 PC_FLAG_WRITING
= (1 << 6),
329 /* command timed out */
330 PC_FLAG_TIMEDOUT
= (1 << 7),
334 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
335 * This is used for several packet commands (not for READ/WRITE commands).
337 #define IDE_PC_BUFFER_SIZE 256
339 struct ide_atapi_pc
{
340 /* actual packet bytes */
342 /* incremented on each retry */
346 /* bytes to transfer */
348 /* bytes actually transferred */
353 /* current buffer position */
356 /* missing/available data on the current buffer */
359 /* the corresponding request */
365 * those are more or less driver-specific and some of them are subject
366 * to change/removal later.
368 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
371 struct idetape_bh
*bh
;
374 /* idescsi only for now */
375 struct scatterlist
*sg
;
378 struct scsi_cmnd
*scsi_cmd
;
379 void (*done
) (struct scsi_cmnd
*);
381 unsigned long timeout
;
387 #ifdef CONFIG_BLK_DEV_IDEACPI
388 struct ide_acpi_drive_link
;
389 struct ide_acpi_hwif_link
;
392 /* ATAPI device flags */
394 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
395 IDE_AFLAG_MEDIA_CHANGED
= (1 << 1),
396 /* Drive cannot lock the door. */
397 IDE_AFLAG_NO_DOORLOCK
= (1 << 2),
400 /* Drive cannot eject the disc. */
401 IDE_AFLAG_NO_EJECT
= (1 << 3),
402 /* Drive is a pre ATAPI 1.2 drive. */
403 IDE_AFLAG_PRE_ATAPI12
= (1 << 4),
404 /* TOC addresses are in BCD. */
405 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 5),
406 /* TOC track numbers are in BCD. */
407 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 6),
409 * Drive does not provide data in multiples of SECTOR_SIZE
410 * when more than one interrupt is needed.
412 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 7),
413 /* Seeking in progress. */
414 IDE_AFLAG_SEEKING
= (1 << 8),
415 /* Saved TOC information is current. */
416 IDE_AFLAG_TOC_VALID
= (1 << 9),
417 /* We think that the drive door is locked. */
418 IDE_AFLAG_DOOR_LOCKED
= (1 << 10),
419 /* SET_CD_SPEED command is unsupported. */
420 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 11),
421 IDE_AFLAG_VERTOS_300_SSD
= (1 << 12),
422 IDE_AFLAG_VERTOS_600_ESD
= (1 << 13),
423 IDE_AFLAG_SANYO_3CD
= (1 << 14),
424 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 15),
425 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 16),
426 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 17),
429 /* Format in progress */
430 IDE_AFLAG_FORMAT_IN_PROGRESS
= (1 << 18),
431 /* Avoid commands not supported in Clik drive */
432 IDE_AFLAG_CLIK_DRIVE
= (1 << 19),
433 /* Requires BH algorithm for packets */
434 IDE_AFLAG_ZIP_DRIVE
= (1 << 20),
436 IDE_AFLAG_WP
= (1 << 21),
437 /* Supports format progress report */
438 IDE_AFLAG_SRFP
= (1 << 22),
441 IDE_AFLAG_IGNORE_DSC
= (1 << 23),
442 /* 0 When the tape position is unknown */
443 IDE_AFLAG_ADDRESS_VALID
= (1 << 24),
444 /* Device already opened */
445 IDE_AFLAG_BUSY
= (1 << 25),
446 /* Attempt to auto-detect the current user block size */
447 IDE_AFLAG_DETECT_BS
= (1 << 26),
448 /* Currently on a filemark */
449 IDE_AFLAG_FILEMARK
= (1 << 27),
450 /* 0 = no tape is loaded, so we don't rewind after ejecting */
451 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 28),
453 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 29),
458 /* restore settings after device reset */
459 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
460 /* device is using DMA for read/write */
461 IDE_DFLAG_USING_DMA
= (1 << 1),
462 /* okay to unmask other IRQs */
463 IDE_DFLAG_UNMASK
= (1 << 2),
464 /* don't attempt flushes */
465 IDE_DFLAG_NOFLUSH
= (1 << 3),
467 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
468 /* give potential excess bandwidth */
469 IDE_DFLAG_NICE1
= (1 << 5),
470 /* device is physically present */
471 IDE_DFLAG_PRESENT
= (1 << 6),
472 /* device ejected hint */
473 IDE_DFLAG_DEAD
= (1 << 7),
474 /* id read from device (synthetic if not set) */
475 IDE_DFLAG_ID_READ
= (1 << 8),
476 IDE_DFLAG_NOPROBE
= (1 << 9),
477 /* need to do check_media_change() */
478 IDE_DFLAG_REMOVABLE
= (1 << 10),
479 /* needed for removable devices */
480 IDE_DFLAG_ATTACH
= (1 << 11),
481 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
482 /* disallow setting unmask bit */
483 IDE_DFLAG_NO_UNMASK
= (1 << 13),
484 /* disallow enabling 32-bit I/O */
485 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
486 /* for removable only: door lock/unlock works */
487 IDE_DFLAG_DOORLOCKING
= (1 << 15),
489 IDE_DFLAG_NODMA
= (1 << 16),
490 /* powermanagment told us not to do anything, so sleep nicely */
491 IDE_DFLAG_BLOCKED
= (1 << 17),
492 /* ide-scsi emulation */
493 IDE_DFLAG_SCSI
= (1 << 18),
494 /* sleeping & sleep field valid */
495 IDE_DFLAG_SLEEPING
= (1 << 19),
496 IDE_DFLAG_POST_RESET
= (1 << 20),
497 IDE_DFLAG_UDMA33_WARNED
= (1 << 21),
498 IDE_DFLAG_LBA48
= (1 << 22),
499 /* status of write cache */
500 IDE_DFLAG_WCACHE
= (1 << 23),
501 /* used for ignoring ATA_DF */
502 IDE_DFLAG_NOWERR
= (1 << 24),
503 /* retrying in PIO */
504 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 25),
505 IDE_DFLAG_LBA
= (1 << 26),
509 char name
[4]; /* drive name, such as "hda" */
510 char driver_req
[10]; /* requests specific driver */
512 struct request_queue
*queue
; /* request queue */
514 struct request
*rq
; /* current request */
515 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
516 void *driver_data
; /* extra driver data */
517 u16
*id
; /* identification info */
518 #ifdef CONFIG_IDE_PROC_FS
519 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
520 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
522 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
524 unsigned long dev_flags
;
526 unsigned long sleep
; /* sleep until this time */
527 unsigned long service_start
; /* time we started last request */
528 unsigned long service_time
; /* service time of last request */
529 unsigned long timeout
; /* max time to wait for irq */
531 special_t special
; /* special action flags */
532 select_t select
; /* basic drive/head select reg value */
534 u8 retry_pio
; /* retrying dma capable host in pio */
535 u8 waiting_for_dma
; /* dma currently in progress */
537 u8 quirk_list
; /* considered quirky, set for a specific host */
538 u8 init_speed
; /* transfer rate set at boot */
539 u8 current_speed
; /* current transfer rate set */
540 u8 desired_speed
; /* desired transfer rate set */
541 u8 dn
; /* now wide spread use */
542 u8 acoustic
; /* acoustic management */
543 u8 media
; /* disk, cdrom, tape, floppy, ... */
544 u8 ready_stat
; /* min status value for drive ready */
545 u8 mult_count
; /* current multiple sector setting */
546 u8 mult_req
; /* requested multiple sector setting */
547 u8 tune_req
; /* requested drive tuning setting */
548 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
549 u8 bad_wstat
; /* used for ignoring ATA_DF */
550 u8 head
; /* "real" number of heads */
551 u8 sect
; /* "real" sectors per track */
552 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
553 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
555 /* delay this long before sending packet command */
558 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
559 unsigned int cyl
; /* "real" number of cyls */
560 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
561 unsigned int failures
; /* current failure count */
562 unsigned int max_failures
; /* maximum allowed failure count */
563 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
565 u64 capacity64
; /* total number of sectors */
567 int lun
; /* logical unit */
568 int crc_count
; /* crc counter to reduce drive speed */
570 unsigned long debug_mask
; /* debugging levels switch */
572 #ifdef CONFIG_BLK_DEV_IDEACPI
573 struct ide_acpi_drive_link
*acpidata
;
575 struct list_head list
;
576 struct device gendev
;
577 struct completion gendev_rel_comp
; /* to deal with device release() */
579 /* current packet command */
580 struct ide_atapi_pc
*pc
;
582 /* callback for packet commands */
583 void (*pc_callback
)(struct ide_drive_s
*, int);
585 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
586 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
589 unsigned long atapi_flags
;
591 struct ide_atapi_pc request_sense_pc
;
592 struct request request_sense_rq
;
595 typedef struct ide_drive_s ide_drive_t
;
597 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
599 #define to_ide_drv(obj, cont_type) \
600 container_of(obj, struct cont_type, kref)
602 #define ide_drv_g(disk, cont_type) \
603 container_of((disk)->private_data, struct cont_type, driver)
606 struct ide_port_info
;
609 void (*exec_command
)(struct hwif_s
*, u8
);
610 u8 (*read_status
)(struct hwif_s
*);
611 u8 (*read_altstatus
)(struct hwif_s
*);
612 u8 (*read_sff_dma_status
)(struct hwif_s
*);
614 void (*set_irq
)(struct hwif_s
*, int);
616 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
617 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
619 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
621 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
625 extern const struct ide_tp_ops default_tp_ops
;
628 * struct ide_port_ops - IDE port operations
630 * @init_dev: host specific initialization of a device
631 * @set_pio_mode: routine to program host for PIO mode
632 * @set_dma_mode: routine to program host for DMA mode
633 * @selectproc: tweaks hardware to select drive
634 * @reset_poll: chipset polling based on hba specifics
635 * @pre_reset: chipset specific changes to default for device-hba resets
636 * @resetproc: routine to reset controller after a disk reset
637 * @maskproc: special host masking for drive selection
638 * @quirkproc: check host's drive quirk list
640 * @mdma_filter: filter MDMA modes
641 * @udma_filter: filter UDMA modes
643 * @cable_detect: detect cable type
645 struct ide_port_ops
{
646 void (*init_dev
)(ide_drive_t
*);
647 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
648 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
649 void (*selectproc
)(ide_drive_t
*);
650 int (*reset_poll
)(ide_drive_t
*);
651 void (*pre_reset
)(ide_drive_t
*);
652 void (*resetproc
)(ide_drive_t
*);
653 void (*maskproc
)(ide_drive_t
*, int);
654 void (*quirkproc
)(ide_drive_t
*);
656 u8 (*mdma_filter
)(ide_drive_t
*);
657 u8 (*udma_filter
)(ide_drive_t
*);
659 u8 (*cable_detect
)(struct hwif_s
*);
663 void (*dma_host_set
)(struct ide_drive_s
*, int);
664 int (*dma_setup
)(struct ide_drive_s
*);
665 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
666 void (*dma_start
)(struct ide_drive_s
*);
667 int (*dma_end
)(struct ide_drive_s
*);
668 int (*dma_test_irq
)(struct ide_drive_s
*);
669 void (*dma_lost_irq
)(struct ide_drive_s
*);
670 void (*dma_timeout
)(struct ide_drive_s
*);
675 typedef struct hwif_s
{
676 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
677 struct hwif_s
*mate
; /* other hwif from same PCI chip */
678 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
679 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
681 struct ide_host
*host
;
683 char name
[6]; /* name of interface, eg. "ide0" */
685 struct ide_io_ports io_ports
;
687 unsigned long sata_scr
[SATA_NR_PORTS
];
689 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
691 u8 major
; /* our major number */
692 u8 index
; /* 0 for ide0; 1 for ide1; ... */
693 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
703 u8 cbl
; /* cable type */
705 hwif_chipset_t chipset
; /* sub-module for tuning.. */
709 ide_ack_intr_t
*ack_intr
;
711 void (*rw_disk
)(ide_drive_t
*, struct request
*);
713 const struct ide_tp_ops
*tp_ops
;
714 const struct ide_port_ops
*port_ops
;
715 const struct ide_dma_ops
*dma_ops
;
717 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
719 /* dma physical region descriptor table (cpu view) */
720 unsigned int *dmatable_cpu
;
721 /* dma physical region descriptor table (dma view) */
722 dma_addr_t dmatable_dma
;
723 /* Scatter-gather list used to build the above */
724 struct scatterlist
*sg_table
;
725 int sg_max_nents
; /* Maximum number of entries in it */
726 int sg_nents
; /* Current number of entries in it */
727 int sg_dma_direction
; /* dma transfer direction */
729 /* data phase of the active command (currently only valid for PIO/DMA) */
734 struct scatterlist
*cursg
;
735 unsigned int cursg_ofs
;
737 int rqsize
; /* max sectors per request */
738 int irq
; /* our irq number */
740 unsigned long dma_base
; /* base addr for dma ports */
742 unsigned long config_data
; /* for use by chipset-specific code */
743 unsigned long select_data
; /* for use by chipset-specific code */
745 unsigned long extra_base
; /* extra addr for dma ports */
746 unsigned extra_ports
; /* number of extra dma ports */
748 unsigned present
: 1; /* this interface exists */
749 unsigned serialized
: 1; /* serialized all channel operation */
750 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
751 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
753 struct device gendev
;
754 struct device
*portdev
;
756 struct completion gendev_rel_comp
; /* To deal with device release() */
758 void *hwif_data
; /* extra hwif data */
760 #ifdef CONFIG_BLK_DEV_IDEACPI
761 struct ide_acpi_hwif_link
*acpidata
;
763 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
766 ide_hwif_t
*ports
[MAX_HWIFS
];
767 unsigned int n_ports
;
768 struct device
*dev
[2];
769 unsigned int (*init_chipset
)(struct pci_dev
*);
770 unsigned long host_flags
;
775 * internal ide interrupt handler type
777 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
778 typedef int (ide_expiry_t
)(ide_drive_t
*);
780 /* used by ide-cd, ide-floppy, etc. */
781 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
783 typedef struct hwgroup_s
{
784 /* irq handler, if active */
785 ide_startstop_t (*handler
)(ide_drive_t
*);
787 /* BOOL: protects all fields below */
789 /* BOOL: wake us up on timer expiry */
790 unsigned int sleeping
: 1;
791 /* BOOL: polling active & poll_timeout field valid */
792 unsigned int polling
: 1;
796 /* ptr to current hwif in linked-list */
799 /* current request */
803 struct timer_list timer
;
804 /* timeout value during long polls */
805 unsigned long poll_timeout
;
806 /* queried upon timeouts */
807 int (*expiry
)(ide_drive_t
*);
813 typedef struct ide_driver_s ide_driver_t
;
815 extern struct mutex ide_setting_mtx
;
818 * configurable drive settings
821 #define DS_SYNC (1 << 0)
824 int (*get
)(ide_drive_t
*);
825 int (*set
)(ide_drive_t
*, int);
829 #define __DEVSET(_flags, _get, _set) { \
835 #define ide_devset_get(name, field) \
836 static int get_##name(ide_drive_t *drive) \
838 return drive->field; \
841 #define ide_devset_set(name, field) \
842 static int set_##name(ide_drive_t *drive, int arg) \
844 drive->field = arg; \
848 #define ide_devset_get_flag(name, flag) \
849 static int get_##name(ide_drive_t *drive) \
851 return !!(drive->dev_flags & flag); \
854 #define ide_devset_set_flag(name, flag) \
855 static int set_##name(ide_drive_t *drive, int arg) \
858 drive->dev_flags |= flag; \
860 drive->dev_flags &= ~flag; \
864 #define __IDE_DEVSET(_name, _flags, _get, _set) \
865 const struct ide_devset ide_devset_##_name = \
866 __DEVSET(_flags, _get, _set)
868 #define IDE_DEVSET(_name, _flags, _get, _set) \
869 static __IDE_DEVSET(_name, _flags, _get, _set)
871 #define ide_devset_rw(_name, _func) \
872 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
874 #define ide_devset_w(_name, _func) \
875 IDE_DEVSET(_name, 0, NULL, set_##_func)
877 #define ide_devset_rw_sync(_name, _func) \
878 IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
880 #define ide_decl_devset(_name) \
881 extern const struct ide_devset ide_devset_##_name
883 ide_decl_devset(io_32bit
);
884 ide_decl_devset(keepsettings
);
885 ide_decl_devset(pio_mode
);
886 ide_decl_devset(unmaskirq
);
887 ide_decl_devset(using_dma
);
889 #ifdef CONFIG_IDE_PROC_FS
891 * /proc/ide interface
894 #define ide_devset_rw_field(_name, _field) \
895 ide_devset_get(_name, _field); \
896 ide_devset_set(_name, _field); \
897 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
899 #define ide_devset_rw_flag(_name, _field) \
900 ide_devset_get_flag(_name, _field); \
901 ide_devset_set_flag(_name, _field); \
902 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
904 struct ide_proc_devset
{
906 const struct ide_devset
*setting
;
908 int (*mulf
)(ide_drive_t
*);
909 int (*divf
)(ide_drive_t
*);
912 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
913 .name = __stringify(_name), \
914 .setting = &ide_devset_##_name, \
921 #define IDE_PROC_DEVSET(_name, _min, _max) \
922 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
927 read_proc_t
*read_proc
;
928 write_proc_t
*write_proc
;
931 void proc_ide_create(void);
932 void proc_ide_destroy(void);
933 void ide_proc_register_port(ide_hwif_t
*);
934 void ide_proc_port_register_devices(ide_hwif_t
*);
935 void ide_proc_unregister_device(ide_drive_t
*);
936 void ide_proc_unregister_port(ide_hwif_t
*);
937 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
938 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
940 read_proc_t proc_ide_read_capacity
;
941 read_proc_t proc_ide_read_geometry
;
944 * Standard exit stuff:
946 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
955 *start = page + off; \
959 static inline void proc_ide_create(void) { ; }
960 static inline void proc_ide_destroy(void) { ; }
961 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
962 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
963 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
964 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
965 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
966 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
967 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
971 /* enter/exit functions */
972 IDE_DBG_FUNC
= (1 << 0),
973 /* sense key/asc handling */
974 IDE_DBG_SENSE
= (1 << 1),
975 /* packet commands handling */
976 IDE_DBG_PC
= (1 << 2),
977 /* request handling */
978 IDE_DBG_RQ
= (1 << 3),
979 /* driver probing/setup */
980 IDE_DBG_PROBE
= (1 << 4),
983 /* DRV_NAME has to be defined in the driver before using the macro below */
984 #define __ide_debug_log(lvl, fmt, args...) \
986 if (unlikely(drive->debug_mask & lvl)) \
987 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
991 * Power Management state machine (rq->pm->pm_step).
993 * For each step, the core calls ide_start_power_step() first.
995 * - ide_stopped : In this case, the core calls us back again unless
996 * step have been set to ide_power_state_completed.
997 * - ide_started : In this case, the channel is left busy until an
998 * async event (interrupt) occurs.
999 * Typically, ide_start_power_step() will issue a taskfile request with
1002 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1003 * with the error code if any. This routine should update the step value
1004 * and return. It should not start a new request. The core will call
1005 * ide_start_power_step() for the new step value, unless step have been
1006 * set to IDE_PM_COMPLETED.
1009 IDE_PM_START_SUSPEND
,
1010 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1013 IDE_PM_START_RESUME
,
1014 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1022 * Subdrivers support.
1024 * The gendriver.owner field should be set to the module owner of this driver.
1025 * The gendriver.name field should be set to the name of this driver
1027 struct ide_driver_s
{
1028 const char *version
;
1029 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1030 int (*end_request
)(ide_drive_t
*, int, int);
1031 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
1032 struct device_driver gen_driver
;
1033 int (*probe
)(ide_drive_t
*);
1034 void (*remove
)(ide_drive_t
*);
1035 void (*resume
)(ide_drive_t
*);
1036 void (*shutdown
)(ide_drive_t
*);
1037 #ifdef CONFIG_IDE_PROC_FS
1038 ide_proc_entry_t
*proc
;
1039 const struct ide_proc_devset
*settings
;
1043 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1045 int ide_device_get(ide_drive_t
*);
1046 void ide_device_put(ide_drive_t
*);
1048 struct ide_ioctl_devset
{
1049 unsigned int get_ioctl
;
1050 unsigned int set_ioctl
;
1051 const struct ide_devset
*setting
;
1054 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1055 unsigned long, const struct ide_ioctl_devset
*);
1057 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*,
1058 unsigned, unsigned long);
1060 extern int ide_vlb_clk
;
1061 extern int ide_pci_clk
;
1063 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1064 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1065 int uptodate
, int nr_sectors
);
1067 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1069 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1072 void ide_execute_pkt_cmd(ide_drive_t
*);
1074 void ide_pad_transfer(ide_drive_t
*, int, int);
1076 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1078 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1080 void ide_fix_driveid(u16
*);
1082 extern void ide_fixstring(u8
*, const int, const int);
1084 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1086 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1088 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1090 extern int ide_devset_execute(ide_drive_t
*drive
,
1091 const struct ide_devset
*setting
, int arg
);
1093 extern void ide_do_drive_cmd(ide_drive_t
*, struct request
*);
1095 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1098 IDE_TFLAG_LBA48
= (1 << 0),
1099 IDE_TFLAG_FLAGGED
= (1 << 2),
1100 IDE_TFLAG_OUT_DATA
= (1 << 3),
1101 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
1102 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
1103 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
1104 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
1105 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
1106 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
1107 IDE_TFLAG_OUT_HOB_NSECT
|
1108 IDE_TFLAG_OUT_HOB_LBAL
|
1109 IDE_TFLAG_OUT_HOB_LBAM
|
1110 IDE_TFLAG_OUT_HOB_LBAH
,
1111 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
1112 IDE_TFLAG_OUT_NSECT
= (1 << 10),
1113 IDE_TFLAG_OUT_LBAL
= (1 << 11),
1114 IDE_TFLAG_OUT_LBAM
= (1 << 12),
1115 IDE_TFLAG_OUT_LBAH
= (1 << 13),
1116 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
1117 IDE_TFLAG_OUT_NSECT
|
1118 IDE_TFLAG_OUT_LBAL
|
1119 IDE_TFLAG_OUT_LBAM
|
1121 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
1122 IDE_TFLAG_WRITE
= (1 << 15),
1123 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
1124 IDE_TFLAG_IN_DATA
= (1 << 17),
1125 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
1126 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
1127 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
1128 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
1129 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
1130 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
1131 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
1132 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
1133 IDE_TFLAG_IN_HOB_LBAM
|
1134 IDE_TFLAG_IN_HOB_LBAH
,
1135 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
1136 IDE_TFLAG_IN_HOB_NSECT
|
1137 IDE_TFLAG_IN_HOB_LBA
,
1138 IDE_TFLAG_IN_FEATURE
= (1 << 1),
1139 IDE_TFLAG_IN_NSECT
= (1 << 25),
1140 IDE_TFLAG_IN_LBAL
= (1 << 26),
1141 IDE_TFLAG_IN_LBAM
= (1 << 27),
1142 IDE_TFLAG_IN_LBAH
= (1 << 28),
1143 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
1146 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
1148 IDE_TFLAG_IN_DEVICE
= (1 << 29),
1149 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
1151 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
1153 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
1154 IDE_TFLAG_IN_DEVICE
,
1155 /* force 16-bit I/O operations */
1156 IDE_TFLAG_IO_16BIT
= (1 << 30),
1157 /* ide_task_t was allocated using kmalloc() */
1158 IDE_TFLAG_DYN
= (1 << 31),
1161 struct ide_taskfile
{
1162 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
1164 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
1170 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
1173 u8 error
; /* read: error */
1174 u8 feature
; /* write: feature */
1177 u8 nsect
; /* 8: number of sectors */
1178 u8 lbal
; /* 9: LBA low */
1179 u8 lbam
; /* 10: LBA mid */
1180 u8 lbah
; /* 11: LBA high */
1182 u8 device
; /* 12: device select */
1185 u8 status
; /* read: status */
1186 u8 command
; /* write: command */
1190 typedef struct ide_task_s
{
1192 struct ide_taskfile tf
;
1197 struct request
*rq
; /* copy of request */
1198 void *special
; /* valid_t generally */
1201 void ide_tf_dump(const char *, struct ide_taskfile
*);
1203 void ide_exec_command(ide_hwif_t
*, u8
);
1204 u8
ide_read_status(ide_hwif_t
*);
1205 u8
ide_read_altstatus(ide_hwif_t
*);
1206 u8
ide_read_sff_dma_status(ide_hwif_t
*);
1208 void ide_set_irq(ide_hwif_t
*, int);
1210 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1211 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1213 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1214 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1216 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1218 extern void SELECT_DRIVE(ide_drive_t
*);
1219 void SELECT_MASK(ide_drive_t
*, int);
1221 u8
ide_read_error(ide_drive_t
*);
1222 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1224 extern int drive_is_ready(ide_drive_t
*);
1226 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
1228 int ide_check_atapi_device(ide_drive_t
*, const char *);
1230 void ide_init_pc(struct ide_atapi_pc
*);
1233 * Special requests for ide-tape block device strategy routine.
1235 * In order to service a character device command, we add special requests to
1236 * the tail of our block device request queue and wait for their completion.
1239 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1240 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1241 REQ_IDETAPE_READ
= (1 << 2),
1242 REQ_IDETAPE_WRITE
= (1 << 3),
1245 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1247 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1248 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1249 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1250 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1251 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1253 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc
*pc
)
1255 return max_t(unsigned long, WAIT_CMD
, pc
->timeout
- jiffies
);
1258 int ide_scsi_expiry(ide_drive_t
*);
1260 ide_startstop_t
ide_issue_pc(ide_drive_t
*, unsigned int, ide_expiry_t
*);
1262 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1264 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1266 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1267 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1269 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1271 extern int ide_driveid_update(ide_drive_t
*);
1272 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1273 extern u8
eighty_ninty_three (ide_drive_t
*);
1274 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1276 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1278 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1280 extern void ide_timer_expiry(unsigned long);
1281 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1282 extern void do_ide_request(struct request_queue
*);
1284 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1286 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1287 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1288 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1290 #define ide_pci_register_driver(d) pci_register_driver(d)
1293 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int,
1294 hw_regs_t
*, hw_regs_t
**);
1295 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1297 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1298 int ide_pci_set_master(struct pci_dev
*, const char *);
1299 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1300 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1301 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1303 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1304 const struct ide_port_info
*d
)
1310 typedef struct ide_pci_enablebit_s
{
1311 u8 reg
; /* byte pci reg holding the enable-bit */
1312 u8 mask
; /* mask to isolate the enable-bit */
1313 u8 val
; /* value of masked reg when "enabled" */
1314 } ide_pci_enablebit_t
;
1317 /* Uses ISA control ports not PCI ones. */
1318 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1319 /* single port device */
1320 IDE_HFLAG_SINGLE
= (1 << 1),
1321 /* don't use legacy PIO blacklist */
1322 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1323 /* set for the second port of QD65xx */
1324 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1325 /* use PIO8/9 for prefetch off/on */
1326 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1327 /* use PIO6/7 for fast-devsel off/on */
1328 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1329 /* use 100-102 and 200-202 PIO values to set DMA modes */
1330 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1332 * keep DMA setting when programming PIO mode, may be used only
1333 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1335 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1336 /* program host for the transfer mode after programming device */
1337 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1338 /* don't program host/device for the transfer mode ("smart" hosts) */
1339 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1340 /* trust BIOS for programming chipset/device for DMA */
1341 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1342 /* host is CS5510/CS5520 */
1343 IDE_HFLAG_CS5520
= (1 << 11),
1344 /* ATAPI DMA is unsupported */
1345 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1346 /* set if host is a "non-bootable" controller */
1347 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1348 /* host doesn't support DMA */
1349 IDE_HFLAG_NO_DMA
= (1 << 14),
1350 /* check if host is PCI IDE device before allowing DMA */
1351 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1352 /* host uses MMIO */
1353 IDE_HFLAG_MMIO
= (1 << 16),
1355 IDE_HFLAG_NO_LBA48
= (1 << 17),
1357 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1358 /* data FIFO is cleared by an error */
1359 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1360 /* serialize ports */
1361 IDE_HFLAG_SERIALIZE
= (1 << 20),
1362 /* use legacy IRQs */
1363 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1364 /* force use of legacy IRQs */
1365 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1366 /* limit LBA48 requests to 256 sectors */
1367 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1368 /* use 32-bit I/O ops */
1369 IDE_HFLAG_IO_32BIT
= (1 << 24),
1371 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1372 /* serialize ports if DMA is possible (for sl82c105) */
1373 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1374 /* force host out of "simplex" mode */
1375 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1376 /* DSC overlap is unsupported */
1377 IDE_HFLAG_NO_DSC
= (1 << 29),
1378 /* never use 32-bit I/O ops */
1379 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1380 /* never unmask IRQs */
1381 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1384 #ifdef CONFIG_BLK_DEV_OFFBOARD
1385 # define IDE_HFLAG_OFF_BOARD 0
1387 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1390 struct ide_port_info
{
1392 unsigned int (*init_chipset
)(struct pci_dev
*);
1393 void (*init_iops
)(ide_hwif_t
*);
1394 void (*init_hwif
)(ide_hwif_t
*);
1395 int (*init_dma
)(ide_hwif_t
*,
1396 const struct ide_port_info
*);
1398 const struct ide_tp_ops
*tp_ops
;
1399 const struct ide_port_ops
*port_ops
;
1400 const struct ide_dma_ops
*dma_ops
;
1402 ide_pci_enablebit_t enablebits
[2];
1403 hwif_chipset_t chipset
;
1411 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1412 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1413 const struct ide_port_info
*, void *);
1414 void ide_pci_remove(struct pci_dev
*);
1417 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1418 int ide_pci_resume(struct pci_dev
*);
1420 #define ide_pci_suspend NULL
1421 #define ide_pci_resume NULL
1424 void ide_map_sg(ide_drive_t
*, struct request
*);
1425 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1427 #define BAD_DMA_DRIVE 0
1428 #define GOOD_DMA_DRIVE 1
1430 struct drive_list_entry
{
1431 const char *id_model
;
1432 const char *id_firmware
;
1435 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1437 #ifdef CONFIG_BLK_DEV_IDEDMA
1438 int __ide_dma_bad_drive(ide_drive_t
*);
1439 int ide_id_dma_bug(ide_drive_t
*);
1441 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1443 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1445 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1448 void ide_dma_off_quietly(ide_drive_t
*);
1449 void ide_dma_off(ide_drive_t
*);
1450 void ide_dma_on(ide_drive_t
*);
1451 int ide_set_dma(ide_drive_t
*);
1452 void ide_check_dma_crc(ide_drive_t
*);
1453 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1455 int ide_build_sglist(ide_drive_t
*, struct request
*);
1456 void ide_destroy_dmatable(ide_drive_t
*);
1458 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1459 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1460 int ide_allocate_dma_engine(ide_hwif_t
*);
1461 void ide_release_dma_engine(ide_hwif_t
*);
1463 void ide_dma_host_set(ide_drive_t
*, int);
1464 extern int ide_dma_setup(ide_drive_t
*);
1465 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1466 extern void ide_dma_start(ide_drive_t
*);
1467 extern int __ide_dma_end(ide_drive_t
*);
1468 int ide_dma_test_irq(ide_drive_t
*);
1469 extern void ide_dma_lost_irq(ide_drive_t
*);
1470 extern void ide_dma_timeout(ide_drive_t
*);
1471 extern const struct ide_dma_ops sff_dma_ops
;
1472 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1475 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1476 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1477 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1478 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1479 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1480 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1481 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1482 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1483 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1484 #endif /* CONFIG_BLK_DEV_IDEDMA */
1486 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1487 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1490 #ifdef CONFIG_BLK_DEV_IDEACPI
1491 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1492 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1493 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1494 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1495 void ide_acpi_port_init_devices(ide_hwif_t
*);
1496 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1498 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1499 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1500 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1501 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1502 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1503 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1506 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1507 void ide_unregister(ide_hwif_t
*);
1509 void ide_register_region(struct gendisk
*);
1510 void ide_unregister_region(struct gendisk
*);
1512 void ide_undecoded_slave(ide_drive_t
*);
1514 void ide_port_apply_params(ide_hwif_t
*);
1516 struct ide_host
*ide_host_alloc_all(const struct ide_port_info
*, hw_regs_t
**);
1517 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1518 void ide_host_free(struct ide_host
*);
1519 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1521 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1522 struct ide_host
**);
1523 void ide_host_remove(struct ide_host
*);
1524 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1525 void ide_port_unregister_devices(ide_hwif_t
*);
1526 void ide_port_scan(ide_hwif_t
*);
1528 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1530 return hwif
->hwif_data
;
1533 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1535 hwif
->hwif_data
= data
;
1538 const char *ide_xfer_verbose(u8 mode
);
1539 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1540 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1542 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1543 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1548 u16 act8b
; /* t2 for 8-bit io */
1549 u16 rec8b
; /* t2i for 8-bit io */
1550 u16 cyc8b
; /* t0 for 8-bit io */
1551 u16 active
; /* t2 or tD */
1552 u16 recover
; /* t2i or tK */
1554 u16 udma
; /* t2CYCTYP/2 */
1558 IDE_TIMING_SETUP
= (1 << 0),
1559 IDE_TIMING_ACT8B
= (1 << 1),
1560 IDE_TIMING_REC8B
= (1 << 2),
1561 IDE_TIMING_CYC8B
= (1 << 3),
1562 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1564 IDE_TIMING_ACTIVE
= (1 << 4),
1565 IDE_TIMING_RECOVER
= (1 << 5),
1566 IDE_TIMING_CYCLE
= (1 << 6),
1567 IDE_TIMING_UDMA
= (1 << 7),
1568 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1569 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1570 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1573 struct ide_timing
*ide_timing_find_mode(u8
);
1574 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1575 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1576 struct ide_timing
*, unsigned int);
1577 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1579 int ide_scan_pio_blacklist(char *);
1581 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1583 int ide_set_pio_mode(ide_drive_t
*, u8
);
1584 int ide_set_dma_mode(ide_drive_t
*, u8
);
1586 void ide_set_pio(ide_drive_t
*, u8
);
1588 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1590 ide_set_pio(drive
, 255);
1593 extern spinlock_t ide_lock
;
1594 extern struct mutex ide_cfg_mtx
;
1596 * Structure locking:
1598 * ide_cfg_mtx and ide_lock together protect changes to
1599 * ide_hwif_t->{next,hwgroup}
1602 * ide_hwgroup_t->busy: ide_lock
1603 * ide_hwgroup_t->hwif: ide_lock
1604 * ide_hwif_t->mate: constant, no locking
1605 * ide_drive_t->hwif: constant, no locking
1608 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1610 extern struct bus_type ide_bus_type
;
1611 extern struct class *ide_port_class
;
1613 static inline void ide_dump_identify(u8
*id
)
1615 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1618 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1620 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1623 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1625 ide_drive_t
*peer
= &drive
->hwif
->drives
[(drive
->dn
^ 1) & 1];
1627 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;