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 */
55 #define DMA_PIO_RETRY 1 /* retrying in PIO */
57 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
58 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
61 * Definitions for accessing IDE controller registers
63 #define IDE_NR_PORTS (10)
66 unsigned long data_addr
;
69 unsigned long error_addr
; /* read: error */
70 unsigned long feature_addr
; /* write: feature */
73 unsigned long nsect_addr
;
74 unsigned long lbal_addr
;
75 unsigned long lbam_addr
;
76 unsigned long lbah_addr
;
78 unsigned long device_addr
;
81 unsigned long status_addr
; /* read: status */
82 unsigned long command_addr
; /* write: command */
85 unsigned long ctl_addr
;
87 unsigned long irq_addr
;
90 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
92 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
93 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
94 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
95 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
97 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
99 #define SATA_NR_PORTS (3) /* 16 possible ?? */
101 #define SATA_STATUS_OFFSET (0)
102 #define SATA_ERROR_OFFSET (1)
103 #define SATA_CONTROL_OFFSET (2)
106 * Our Physical Region Descriptor (PRD) table should be large enough
107 * to handle the biggest I/O request we are likely to see. Since requests
108 * can have no more than 256 sectors, and since the typical blocksize is
109 * two or more sectors, we could get by with a limit of 128 entries here for
110 * the usual worst case. Most requests seem to include some contiguous blocks,
111 * further reducing the number of table entries required.
113 * The driver reverts to PIO mode for individual requests that exceed
114 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
115 * 100% of all crazy scenarios here is not necessary.
117 * As it turns out though, we must allocate a full 4KB page for this,
118 * so the two PRD tables (ide0 & ide1) will each get half of that,
119 * allowing each to have about 256 entries (8 bytes each) from this.
122 #define PRD_ENTRIES 256
125 * Some more useful definitions
127 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
128 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
129 #define SECTOR_SIZE 512
131 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
134 * Timeouts for various operations:
137 /* spec allows up to 20ms */
138 WAIT_DRQ
= HZ
/ 10, /* 100ms */
139 /* some laptops are very slow */
140 WAIT_READY
= 5 * HZ
, /* 5s */
141 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
142 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
143 /* worst case when spinning up */
144 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
145 /* maximum wait for an IRQ to happen */
146 WAIT_CMD
= 10 * HZ
, /* 10s */
147 /* Some drives require a longer IRQ timeout. */
148 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
150 * Some drives (for example, Seagate STT3401A Travan) require a very
151 * long timeout, because they don't return an interrupt or clear their
152 * BSY bit until after the command completes (even retension commands).
154 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
155 /* minimum sleep time */
156 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
160 * Op codes for special requests to be handled by ide_special_rq().
161 * Values should be in the range of 0x20 to 0x3f.
163 #define REQ_DRIVE_RESET 0x20
164 #define REQ_DEVSET_EXEC 0x21
167 * Check for an interrupt and acknowledge the interrupt status
170 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
173 * hwif_chipset_t is used to keep track of the specific hardware
174 * chipset used by each IDE interface, if known.
176 enum { ide_unknown
, ide_generic
, ide_pci
,
177 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
178 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
179 ide_rz1000
, ide_trm290
,
180 ide_cmd646
, ide_cy82c693
, ide_4drives
,
182 ide_au1xxx
, ide_palm3710
185 typedef u8 hwif_chipset_t
;
188 * Structure to hold all information about the location of this port
190 typedef struct hw_regs_s
{
192 struct ide_io_ports io_ports
;
193 unsigned long io_ports_array
[IDE_NR_PORTS
];
196 int irq
; /* our irq number */
197 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
198 hwif_chipset_t chipset
;
199 struct device
*dev
, *parent
;
200 unsigned long config
;
203 void ide_init_port_data(struct hwif_s
*, unsigned int);
204 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
206 static inline void ide_std_init_ports(hw_regs_t
*hw
,
207 unsigned long io_addr
,
208 unsigned long ctl_addr
)
212 for (i
= 0; i
<= 7; i
++)
213 hw
->io_ports_array
[i
] = io_addr
++;
215 hw
->io_ports
.ctl_addr
= ctl_addr
;
218 /* for IDE PCI controllers in legacy mode, temporary */
219 static inline int __ide_default_irq(unsigned long base
)
223 case 0x1f0: return isa_irq_to_vector(14);
224 case 0x170: return isa_irq_to_vector(15);
226 case 0x1f0: return 14;
227 case 0x170: return 15;
233 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
234 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
235 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
238 #include <asm-generic/ide_iops.h>
243 /* Currently only m68k, apus and m8xx need it */
244 #ifndef IDE_ARCH_ACK_INTR
245 # define ide_ack_intr(hwif) (1)
248 /* Currently only Atari needs it */
249 #ifndef IDE_ARCH_LOCK
250 # define ide_release_lock() do {} while (0)
251 # define ide_get_lock(hdlr, data) do {} while (0)
252 #endif /* IDE_ARCH_LOCK */
255 * Now for the data we need to maintain per-drive: ide_drive_t
258 #define ide_scsi 0x21
259 #define ide_disk 0x20
260 #define ide_optical 0x7
261 #define ide_cdrom 0x5
263 #define ide_floppy 0x0
266 * Special Driver Flags
268 * set_geometry : respecify drive geometry
269 * recalibrate : seek to cyl 0
270 * set_multmode : set multmode count
271 * set_tune : tune interface for drive
272 * serviced : service command
278 unsigned set_geometry
: 1;
279 unsigned recalibrate
: 1;
280 unsigned set_multmode
: 1;
281 unsigned set_tune
: 1;
282 unsigned serviced
: 1;
283 unsigned reserved
: 3;
288 * ATA-IDE Select Register, aka Device-Head
290 * head : always zeros here
291 * unit : drive select number: 0/1
293 * lba : using LBA instead of CHS
299 #if defined(__LITTLE_ENDIAN_BITFIELD)
305 #elif defined(__BIG_ENDIAN_BITFIELD)
312 #error "Please fix <asm/byteorder.h>"
315 } select_t
, ata_select_t
;
318 * Status returned from various ide_ functions
321 ide_stopped
, /* no drive operation was started */
322 ide_started
, /* a drive operation was started, handler was set */
325 /* ATAPI packet command flags */
327 /* set when an error is considered normal - no retry (ide-tape) */
328 PC_FLAG_ABORT
= (1 << 0),
329 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
330 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
331 PC_FLAG_DMA_OK
= (1 << 3),
332 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
333 PC_FLAG_DMA_ERROR
= (1 << 5),
334 PC_FLAG_WRITING
= (1 << 6),
335 /* command timed out */
336 PC_FLAG_TIMEDOUT
= (1 << 7),
340 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
341 * This is used for several packet commands (not for READ/WRITE commands).
343 #define IDE_PC_BUFFER_SIZE 256
345 struct ide_atapi_pc
{
346 /* actual packet bytes */
348 /* incremented on each retry */
352 /* bytes to transfer */
354 /* bytes actually transferred */
359 /* current buffer position */
362 /* missing/available data on the current buffer */
365 /* the corresponding request */
371 * those are more or less driver-specific and some of them are subject
372 * to change/removal later.
374 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
377 struct idetape_bh
*bh
;
380 /* idescsi only for now */
381 struct scatterlist
*sg
;
384 struct scsi_cmnd
*scsi_cmd
;
385 void (*done
) (struct scsi_cmnd
*);
387 unsigned long timeout
;
393 #ifdef CONFIG_BLK_DEV_IDEACPI
394 struct ide_acpi_drive_link
;
395 struct ide_acpi_hwif_link
;
398 /* ATAPI device flags */
400 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
401 IDE_AFLAG_MEDIA_CHANGED
= (1 << 1),
402 /* Drive cannot lock the door. */
403 IDE_AFLAG_NO_DOORLOCK
= (1 << 2),
406 /* Drive cannot eject the disc. */
407 IDE_AFLAG_NO_EJECT
= (1 << 3),
408 /* Drive is a pre ATAPI 1.2 drive. */
409 IDE_AFLAG_PRE_ATAPI12
= (1 << 4),
410 /* TOC addresses are in BCD. */
411 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 5),
412 /* TOC track numbers are in BCD. */
413 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 6),
415 * Drive does not provide data in multiples of SECTOR_SIZE
416 * when more than one interrupt is needed.
418 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 7),
419 /* Seeking in progress. */
420 IDE_AFLAG_SEEKING
= (1 << 8),
421 /* Saved TOC information is current. */
422 IDE_AFLAG_TOC_VALID
= (1 << 9),
423 /* We think that the drive door is locked. */
424 IDE_AFLAG_DOOR_LOCKED
= (1 << 10),
425 /* SET_CD_SPEED command is unsupported. */
426 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 11),
427 IDE_AFLAG_VERTOS_300_SSD
= (1 << 12),
428 IDE_AFLAG_VERTOS_600_ESD
= (1 << 13),
429 IDE_AFLAG_SANYO_3CD
= (1 << 14),
430 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 15),
431 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 16),
432 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 17),
435 /* Format in progress */
436 IDE_AFLAG_FORMAT_IN_PROGRESS
= (1 << 18),
437 /* Avoid commands not supported in Clik drive */
438 IDE_AFLAG_CLIK_DRIVE
= (1 << 19),
439 /* Requires BH algorithm for packets */
440 IDE_AFLAG_ZIP_DRIVE
= (1 << 20),
442 IDE_AFLAG_WP
= (1 << 21),
443 /* Supports format progress report */
444 IDE_AFLAG_SRFP
= (1 << 22),
447 IDE_AFLAG_IGNORE_DSC
= (1 << 23),
448 /* 0 When the tape position is unknown */
449 IDE_AFLAG_ADDRESS_VALID
= (1 << 24),
450 /* Device already opened */
451 IDE_AFLAG_BUSY
= (1 << 25),
452 /* Attempt to auto-detect the current user block size */
453 IDE_AFLAG_DETECT_BS
= (1 << 26),
454 /* Currently on a filemark */
455 IDE_AFLAG_FILEMARK
= (1 << 27),
456 /* 0 = no tape is loaded, so we don't rewind after ejecting */
457 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 28),
459 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 29),
463 char name
[4]; /* drive name, such as "hda" */
464 char driver_req
[10]; /* requests specific driver */
466 struct request_queue
*queue
; /* request queue */
468 struct request
*rq
; /* current request */
469 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
470 void *driver_data
; /* extra driver data */
471 u16
*id
; /* identification info */
472 #ifdef CONFIG_IDE_PROC_FS
473 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
474 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
476 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
478 unsigned long sleep
; /* sleep until this time */
479 unsigned long service_start
; /* time we started last request */
480 unsigned long service_time
; /* service time of last request */
481 unsigned long timeout
; /* max time to wait for irq */
483 special_t special
; /* special action flags */
484 select_t select
; /* basic drive/head select reg value */
486 u8 retry_pio
; /* retrying dma capable host in pio */
487 u8 state
; /* retry state */
488 u8 waiting_for_dma
; /* dma currently in progress */
490 unsigned keep_settings
: 1; /* restore settings after drive reset */
491 unsigned using_dma
: 1; /* disk is using dma for read/write */
492 unsigned unmask
: 1; /* okay to unmask other irqs */
493 unsigned noflush
: 1; /* don't attempt flushes */
494 unsigned dsc_overlap
: 1; /* DSC overlap */
495 unsigned nice1
: 1; /* give potential excess bandwidth */
496 unsigned present
: 1; /* drive is physically present */
497 unsigned dead
: 1; /* device ejected hint */
498 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
499 unsigned noprobe
: 1; /* from: hdx=noprobe */
500 unsigned removable
: 1; /* 1 if need to do check_media_change */
501 unsigned attach
: 1; /* needed for removable devices */
502 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
503 unsigned no_unmask
: 1; /* disallow setting unmask bit */
504 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
505 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
506 unsigned nodma
: 1; /* disallow DMA */
507 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
508 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
509 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
510 unsigned post_reset
: 1;
511 unsigned udma33_warned
: 1;
512 unsigned addressing
: 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
513 unsigned wcache
: 1; /* status of write cache */
514 unsigned nowerr
: 1; /* used for ignoring ATA_DF */
516 u8 quirk_list
; /* considered quirky, set for a specific host */
517 u8 init_speed
; /* transfer rate set at boot */
518 u8 current_speed
; /* current transfer rate set */
519 u8 desired_speed
; /* desired transfer rate set */
520 u8 dn
; /* now wide spread use */
521 u8 acoustic
; /* acoustic management */
522 u8 media
; /* disk, cdrom, tape, floppy, ... */
523 u8 ready_stat
; /* min status value for drive ready */
524 u8 mult_count
; /* current multiple sector setting */
525 u8 mult_req
; /* requested multiple sector setting */
526 u8 tune_req
; /* requested drive tuning setting */
527 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
528 u8 bad_wstat
; /* used for ignoring ATA_DF */
529 u8 head
; /* "real" number of heads */
530 u8 sect
; /* "real" sectors per track */
531 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
532 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
534 /* delay this long before sending packet command */
537 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
538 unsigned int cyl
; /* "real" number of cyls */
539 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
540 unsigned int failures
; /* current failure count */
541 unsigned int max_failures
; /* maximum allowed failure count */
542 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
544 u64 capacity64
; /* total number of sectors */
546 int lun
; /* logical unit */
547 int crc_count
; /* crc counter to reduce drive speed */
549 unsigned long debug_mask
; /* debugging levels switch */
551 #ifdef CONFIG_BLK_DEV_IDEACPI
552 struct ide_acpi_drive_link
*acpidata
;
554 struct list_head list
;
555 struct device gendev
;
556 struct completion gendev_rel_comp
; /* to deal with device release() */
558 /* current packet command */
559 struct ide_atapi_pc
*pc
;
561 /* callback for packet commands */
562 void (*pc_callback
)(struct ide_drive_s
*, int);
564 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
565 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
568 unsigned long atapi_flags
;
570 struct ide_atapi_pc request_sense_pc
;
571 struct request request_sense_rq
;
574 typedef struct ide_drive_s ide_drive_t
;
576 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
578 #define to_ide_drv(obj, cont_type) \
579 container_of(obj, struct cont_type, kref)
581 #define ide_drv_g(disk, cont_type) \
582 container_of((disk)->private_data, struct cont_type, driver)
585 struct ide_port_info
;
588 void (*exec_command
)(struct hwif_s
*, u8
);
589 u8 (*read_status
)(struct hwif_s
*);
590 u8 (*read_altstatus
)(struct hwif_s
*);
591 u8 (*read_sff_dma_status
)(struct hwif_s
*);
593 void (*set_irq
)(struct hwif_s
*, int);
595 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
596 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
598 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
600 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
604 extern const struct ide_tp_ops default_tp_ops
;
607 * struct ide_port_ops - IDE port operations
609 * @init_dev: host specific initialization of a device
610 * @set_pio_mode: routine to program host for PIO mode
611 * @set_dma_mode: routine to program host for DMA mode
612 * @selectproc: tweaks hardware to select drive
613 * @reset_poll: chipset polling based on hba specifics
614 * @pre_reset: chipset specific changes to default for device-hba resets
615 * @resetproc: routine to reset controller after a disk reset
616 * @maskproc: special host masking for drive selection
617 * @quirkproc: check host's drive quirk list
619 * @mdma_filter: filter MDMA modes
620 * @udma_filter: filter UDMA modes
622 * @cable_detect: detect cable type
624 struct ide_port_ops
{
625 void (*init_dev
)(ide_drive_t
*);
626 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
627 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
628 void (*selectproc
)(ide_drive_t
*);
629 int (*reset_poll
)(ide_drive_t
*);
630 void (*pre_reset
)(ide_drive_t
*);
631 void (*resetproc
)(ide_drive_t
*);
632 void (*maskproc
)(ide_drive_t
*, int);
633 void (*quirkproc
)(ide_drive_t
*);
635 u8 (*mdma_filter
)(ide_drive_t
*);
636 u8 (*udma_filter
)(ide_drive_t
*);
638 u8 (*cable_detect
)(struct hwif_s
*);
642 void (*dma_host_set
)(struct ide_drive_s
*, int);
643 int (*dma_setup
)(struct ide_drive_s
*);
644 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
645 void (*dma_start
)(struct ide_drive_s
*);
646 int (*dma_end
)(struct ide_drive_s
*);
647 int (*dma_test_irq
)(struct ide_drive_s
*);
648 void (*dma_lost_irq
)(struct ide_drive_s
*);
649 void (*dma_timeout
)(struct ide_drive_s
*);
654 typedef struct hwif_s
{
655 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
656 struct hwif_s
*mate
; /* other hwif from same PCI chip */
657 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
658 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
660 struct ide_host
*host
;
662 char name
[6]; /* name of interface, eg. "ide0" */
664 struct ide_io_ports io_ports
;
666 unsigned long sata_scr
[SATA_NR_PORTS
];
668 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
670 u8 major
; /* our major number */
671 u8 index
; /* 0 for ide0; 1 for ide1; ... */
672 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
682 u8 cbl
; /* cable type */
684 hwif_chipset_t chipset
; /* sub-module for tuning.. */
688 ide_ack_intr_t
*ack_intr
;
690 void (*rw_disk
)(ide_drive_t
*, struct request
*);
692 const struct ide_tp_ops
*tp_ops
;
693 const struct ide_port_ops
*port_ops
;
694 const struct ide_dma_ops
*dma_ops
;
696 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
698 /* dma physical region descriptor table (cpu view) */
699 unsigned int *dmatable_cpu
;
700 /* dma physical region descriptor table (dma view) */
701 dma_addr_t dmatable_dma
;
702 /* Scatter-gather list used to build the above */
703 struct scatterlist
*sg_table
;
704 int sg_max_nents
; /* Maximum number of entries in it */
705 int sg_nents
; /* Current number of entries in it */
706 int sg_dma_direction
; /* dma transfer direction */
708 /* data phase of the active command (currently only valid for PIO/DMA) */
713 struct scatterlist
*cursg
;
714 unsigned int cursg_ofs
;
716 int rqsize
; /* max sectors per request */
717 int irq
; /* our irq number */
719 unsigned long dma_base
; /* base addr for dma ports */
721 unsigned long config_data
; /* for use by chipset-specific code */
722 unsigned long select_data
; /* for use by chipset-specific code */
724 unsigned long extra_base
; /* extra addr for dma ports */
725 unsigned extra_ports
; /* number of extra dma ports */
727 unsigned present
: 1; /* this interface exists */
728 unsigned serialized
: 1; /* serialized all channel operation */
729 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
730 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
732 struct device gendev
;
733 struct device
*portdev
;
735 struct completion gendev_rel_comp
; /* To deal with device release() */
737 void *hwif_data
; /* extra hwif data */
741 #ifdef CONFIG_BLK_DEV_IDEACPI
742 struct ide_acpi_hwif_link
*acpidata
;
744 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
747 ide_hwif_t
*ports
[MAX_HWIFS
];
748 unsigned int n_ports
;
749 struct device
*dev
[2];
750 unsigned int (*init_chipset
)(struct pci_dev
*);
751 unsigned long host_flags
;
756 * internal ide interrupt handler type
758 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
759 typedef int (ide_expiry_t
)(ide_drive_t
*);
761 /* used by ide-cd, ide-floppy, etc. */
762 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
764 typedef struct hwgroup_s
{
765 /* irq handler, if active */
766 ide_startstop_t (*handler
)(ide_drive_t
*);
768 /* BOOL: protects all fields below */
770 /* BOOL: wake us up on timer expiry */
771 unsigned int sleeping
: 1;
772 /* BOOL: polling active & poll_timeout field valid */
773 unsigned int polling
: 1;
777 /* ptr to current hwif in linked-list */
780 /* current request */
784 struct timer_list timer
;
785 /* timeout value during long polls */
786 unsigned long poll_timeout
;
787 /* queried upon timeouts */
788 int (*expiry
)(ide_drive_t
*);
794 typedef struct ide_driver_s ide_driver_t
;
796 extern struct mutex ide_setting_mtx
;
799 * configurable drive settings
802 #define DS_SYNC (1 << 0)
805 int (*get
)(ide_drive_t
*);
806 int (*set
)(ide_drive_t
*, int);
810 #define __DEVSET(_flags, _get, _set) { \
816 #define ide_devset_get(name, field) \
817 static int get_##name(ide_drive_t *drive) \
819 return drive->field; \
822 #define ide_devset_set(name, field) \
823 static int set_##name(ide_drive_t *drive, int arg) \
825 drive->field = arg; \
829 #define __IDE_DEVSET(_name, _flags, _get, _set) \
830 const struct ide_devset ide_devset_##_name = \
831 __DEVSET(_flags, _get, _set)
833 #define IDE_DEVSET(_name, _flags, _get, _set) \
834 static __IDE_DEVSET(_name, _flags, _get, _set)
836 #define ide_devset_rw(_name, _func) \
837 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
839 #define ide_devset_w(_name, _func) \
840 IDE_DEVSET(_name, 0, NULL, set_##_func)
842 #define ide_devset_rw_sync(_name, _func) \
843 IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
845 #define ide_decl_devset(_name) \
846 extern const struct ide_devset ide_devset_##_name
848 ide_decl_devset(io_32bit
);
849 ide_decl_devset(keepsettings
);
850 ide_decl_devset(pio_mode
);
851 ide_decl_devset(unmaskirq
);
852 ide_decl_devset(using_dma
);
854 #ifdef CONFIG_IDE_PROC_FS
856 * /proc/ide interface
859 #define ide_devset_rw_field(_name, _field) \
860 ide_devset_get(_name, _field); \
861 ide_devset_set(_name, _field); \
862 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
864 struct ide_proc_devset
{
866 const struct ide_devset
*setting
;
868 int (*mulf
)(ide_drive_t
*);
869 int (*divf
)(ide_drive_t
*);
872 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
873 .name = __stringify(_name), \
874 .setting = &ide_devset_##_name, \
881 #define IDE_PROC_DEVSET(_name, _min, _max) \
882 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
887 read_proc_t
*read_proc
;
888 write_proc_t
*write_proc
;
891 void proc_ide_create(void);
892 void proc_ide_destroy(void);
893 void ide_proc_register_port(ide_hwif_t
*);
894 void ide_proc_port_register_devices(ide_hwif_t
*);
895 void ide_proc_unregister_device(ide_drive_t
*);
896 void ide_proc_unregister_port(ide_hwif_t
*);
897 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
898 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
900 read_proc_t proc_ide_read_capacity
;
901 read_proc_t proc_ide_read_geometry
;
904 * Standard exit stuff:
906 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
915 *start = page + off; \
919 static inline void proc_ide_create(void) { ; }
920 static inline void proc_ide_destroy(void) { ; }
921 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
922 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
923 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
924 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
925 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
926 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
927 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
931 /* enter/exit functions */
932 IDE_DBG_FUNC
= (1 << 0),
933 /* sense key/asc handling */
934 IDE_DBG_SENSE
= (1 << 1),
935 /* packet commands handling */
936 IDE_DBG_PC
= (1 << 2),
937 /* request handling */
938 IDE_DBG_RQ
= (1 << 3),
939 /* driver probing/setup */
940 IDE_DBG_PROBE
= (1 << 4),
943 /* DRV_NAME has to be defined in the driver before using the macro below */
944 #define __ide_debug_log(lvl, fmt, args...) \
946 if (unlikely(drive->debug_mask & lvl)) \
947 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
951 * Power Management step value (rq->pm->pm_step).
953 * The step value starts at 0 (ide_pm_state_start_suspend) for a
954 * suspend operation or 1000 (ide_pm_state_start_resume) for a
957 * For each step, the core calls the subdriver start_power_step() first.
959 * - ide_stopped : In this case, the core calls us back again unless
960 * step have been set to ide_power_state_completed.
961 * - ide_started : In this case, the channel is left busy until an
962 * async event (interrupt) occurs.
963 * Typically, start_power_step() will issue a taskfile request with
966 * Upon reception of the interrupt, the core will call complete_power_step()
967 * with the error code if any. This routine should update the step value
968 * and return. It should not start a new request. The core will call
969 * start_power_step for the new step value, unless step have been set to
970 * ide_power_state_completed.
972 * Subdrivers are expected to define their own additional power
973 * steps from 1..999 for suspend and from 1001..1999 for resume,
974 * other values are reserved for future use.
978 ide_pm_state_completed
= -1,
979 ide_pm_state_start_suspend
= 0,
980 ide_pm_state_start_resume
= 1000,
984 * Subdrivers support.
986 * The gendriver.owner field should be set to the module owner of this driver.
987 * The gendriver.name field should be set to the name of this driver
989 struct ide_driver_s
{
992 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
993 int (*end_request
)(ide_drive_t
*, int, int);
994 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
995 struct device_driver gen_driver
;
996 int (*probe
)(ide_drive_t
*);
997 void (*remove
)(ide_drive_t
*);
998 void (*resume
)(ide_drive_t
*);
999 void (*shutdown
)(ide_drive_t
*);
1000 #ifdef CONFIG_IDE_PROC_FS
1001 ide_proc_entry_t
*proc
;
1002 const struct ide_proc_devset
*settings
;
1006 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1008 int ide_device_get(ide_drive_t
*);
1009 void ide_device_put(ide_drive_t
*);
1011 struct ide_ioctl_devset
{
1012 unsigned int get_ioctl
;
1013 unsigned int set_ioctl
;
1014 const struct ide_devset
*setting
;
1017 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1018 unsigned long, const struct ide_ioctl_devset
*);
1020 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*,
1021 unsigned, unsigned long);
1023 extern int ide_vlb_clk
;
1024 extern int ide_pci_clk
;
1026 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
1027 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
1028 int uptodate
, int nr_sectors
);
1030 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
1032 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1035 void ide_execute_pkt_cmd(ide_drive_t
*);
1037 void ide_pad_transfer(ide_drive_t
*, int, int);
1039 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
1041 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
1043 void ide_fix_driveid(u16
*);
1045 extern void ide_fixstring(u8
*, const int, const int);
1047 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1049 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1051 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1053 extern int ide_devset_execute(ide_drive_t
*drive
,
1054 const struct ide_devset
*setting
, int arg
);
1056 extern void ide_do_drive_cmd(ide_drive_t
*, struct request
*);
1058 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
1061 IDE_TFLAG_LBA48
= (1 << 0),
1062 IDE_TFLAG_FLAGGED
= (1 << 2),
1063 IDE_TFLAG_OUT_DATA
= (1 << 3),
1064 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
1065 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
1066 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
1067 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
1068 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
1069 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
1070 IDE_TFLAG_OUT_HOB_NSECT
|
1071 IDE_TFLAG_OUT_HOB_LBAL
|
1072 IDE_TFLAG_OUT_HOB_LBAM
|
1073 IDE_TFLAG_OUT_HOB_LBAH
,
1074 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
1075 IDE_TFLAG_OUT_NSECT
= (1 << 10),
1076 IDE_TFLAG_OUT_LBAL
= (1 << 11),
1077 IDE_TFLAG_OUT_LBAM
= (1 << 12),
1078 IDE_TFLAG_OUT_LBAH
= (1 << 13),
1079 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
1080 IDE_TFLAG_OUT_NSECT
|
1081 IDE_TFLAG_OUT_LBAL
|
1082 IDE_TFLAG_OUT_LBAM
|
1084 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
1085 IDE_TFLAG_WRITE
= (1 << 15),
1086 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
1087 IDE_TFLAG_IN_DATA
= (1 << 17),
1088 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
1089 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
1090 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
1091 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
1092 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
1093 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
1094 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
1095 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
1096 IDE_TFLAG_IN_HOB_LBAM
|
1097 IDE_TFLAG_IN_HOB_LBAH
,
1098 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
1099 IDE_TFLAG_IN_HOB_NSECT
|
1100 IDE_TFLAG_IN_HOB_LBA
,
1101 IDE_TFLAG_IN_FEATURE
= (1 << 1),
1102 IDE_TFLAG_IN_NSECT
= (1 << 25),
1103 IDE_TFLAG_IN_LBAL
= (1 << 26),
1104 IDE_TFLAG_IN_LBAM
= (1 << 27),
1105 IDE_TFLAG_IN_LBAH
= (1 << 28),
1106 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
1109 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
1111 IDE_TFLAG_IN_DEVICE
= (1 << 29),
1112 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
1114 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
1116 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
1117 IDE_TFLAG_IN_DEVICE
,
1118 /* force 16-bit I/O operations */
1119 IDE_TFLAG_IO_16BIT
= (1 << 30),
1120 /* ide_task_t was allocated using kmalloc() */
1121 IDE_TFLAG_DYN
= (1 << 31),
1124 struct ide_taskfile
{
1125 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
1127 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
1133 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
1136 u8 error
; /* read: error */
1137 u8 feature
; /* write: feature */
1140 u8 nsect
; /* 8: number of sectors */
1141 u8 lbal
; /* 9: LBA low */
1142 u8 lbam
; /* 10: LBA mid */
1143 u8 lbah
; /* 11: LBA high */
1145 u8 device
; /* 12: device select */
1148 u8 status
; /* read: status */
1149 u8 command
; /* write: command */
1153 typedef struct ide_task_s
{
1155 struct ide_taskfile tf
;
1160 struct request
*rq
; /* copy of request */
1161 void *special
; /* valid_t generally */
1164 void ide_tf_dump(const char *, struct ide_taskfile
*);
1166 void ide_exec_command(ide_hwif_t
*, u8
);
1167 u8
ide_read_status(ide_hwif_t
*);
1168 u8
ide_read_altstatus(ide_hwif_t
*);
1169 u8
ide_read_sff_dma_status(ide_hwif_t
*);
1171 void ide_set_irq(ide_hwif_t
*, int);
1173 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1174 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1176 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1177 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1179 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1181 extern void SELECT_DRIVE(ide_drive_t
*);
1182 void SELECT_MASK(ide_drive_t
*, int);
1184 u8
ide_read_error(ide_drive_t
*);
1185 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1187 extern int drive_is_ready(ide_drive_t
*);
1189 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
1191 int ide_check_atapi_device(ide_drive_t
*, const char *);
1193 void ide_init_pc(struct ide_atapi_pc
*);
1196 * Special requests for ide-tape block device strategy routine.
1198 * In order to service a character device command, we add special requests to
1199 * the tail of our block device request queue and wait for their completion.
1202 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1203 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1204 REQ_IDETAPE_READ
= (1 << 2),
1205 REQ_IDETAPE_WRITE
= (1 << 3),
1208 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1210 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1211 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1212 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1213 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1214 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1216 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc
*pc
)
1218 return max_t(unsigned long, WAIT_CMD
, pc
->timeout
- jiffies
);
1221 int ide_scsi_expiry(ide_drive_t
*);
1223 ide_startstop_t
ide_issue_pc(ide_drive_t
*, unsigned int, ide_expiry_t
*);
1225 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1227 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1229 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1230 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1232 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1234 extern int ide_driveid_update(ide_drive_t
*);
1235 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1236 extern u8
eighty_ninty_three (ide_drive_t
*);
1237 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1239 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1241 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1243 extern void ide_timer_expiry(unsigned long);
1244 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1245 extern void do_ide_request(struct request_queue
*);
1247 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1249 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1250 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1251 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1253 #define ide_pci_register_driver(d) pci_register_driver(d)
1256 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int,
1257 hw_regs_t
*, hw_regs_t
**);
1258 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1260 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1261 int ide_pci_set_master(struct pci_dev
*, const char *);
1262 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1263 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1264 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1266 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1267 const struct ide_port_info
*d
)
1273 typedef struct ide_pci_enablebit_s
{
1274 u8 reg
; /* byte pci reg holding the enable-bit */
1275 u8 mask
; /* mask to isolate the enable-bit */
1276 u8 val
; /* value of masked reg when "enabled" */
1277 } ide_pci_enablebit_t
;
1280 /* Uses ISA control ports not PCI ones. */
1281 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1282 /* single port device */
1283 IDE_HFLAG_SINGLE
= (1 << 1),
1284 /* don't use legacy PIO blacklist */
1285 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1286 /* set for the second port of QD65xx */
1287 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1288 /* use PIO8/9 for prefetch off/on */
1289 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1290 /* use PIO6/7 for fast-devsel off/on */
1291 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1292 /* use 100-102 and 200-202 PIO values to set DMA modes */
1293 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1295 * keep DMA setting when programming PIO mode, may be used only
1296 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1298 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1299 /* program host for the transfer mode after programming device */
1300 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1301 /* don't program host/device for the transfer mode ("smart" hosts) */
1302 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1303 /* trust BIOS for programming chipset/device for DMA */
1304 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1305 /* host is CS5510/CS5520 */
1306 IDE_HFLAG_CS5520
= (1 << 11),
1307 /* ATAPI DMA is unsupported */
1308 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1309 /* set if host is a "non-bootable" controller */
1310 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1311 /* host doesn't support DMA */
1312 IDE_HFLAG_NO_DMA
= (1 << 14),
1313 /* check if host is PCI IDE device before allowing DMA */
1314 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1315 /* host uses MMIO */
1316 IDE_HFLAG_MMIO
= (1 << 16),
1318 IDE_HFLAG_NO_LBA48
= (1 << 17),
1320 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1321 /* data FIFO is cleared by an error */
1322 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1323 /* serialize ports */
1324 IDE_HFLAG_SERIALIZE
= (1 << 20),
1325 /* use legacy IRQs */
1326 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1327 /* force use of legacy IRQs */
1328 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1329 /* limit LBA48 requests to 256 sectors */
1330 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1331 /* use 32-bit I/O ops */
1332 IDE_HFLAG_IO_32BIT
= (1 << 24),
1334 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1335 /* serialize ports if DMA is possible (for sl82c105) */
1336 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1337 /* force host out of "simplex" mode */
1338 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1339 /* DSC overlap is unsupported */
1340 IDE_HFLAG_NO_DSC
= (1 << 29),
1341 /* never use 32-bit I/O ops */
1342 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1343 /* never unmask IRQs */
1344 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1347 #ifdef CONFIG_BLK_DEV_OFFBOARD
1348 # define IDE_HFLAG_OFF_BOARD 0
1350 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1353 struct ide_port_info
{
1355 unsigned int (*init_chipset
)(struct pci_dev
*);
1356 void (*init_iops
)(ide_hwif_t
*);
1357 void (*init_hwif
)(ide_hwif_t
*);
1358 int (*init_dma
)(ide_hwif_t
*,
1359 const struct ide_port_info
*);
1361 const struct ide_tp_ops
*tp_ops
;
1362 const struct ide_port_ops
*port_ops
;
1363 const struct ide_dma_ops
*dma_ops
;
1365 ide_pci_enablebit_t enablebits
[2];
1366 hwif_chipset_t chipset
;
1374 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1375 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1376 const struct ide_port_info
*, void *);
1377 void ide_pci_remove(struct pci_dev
*);
1380 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1381 int ide_pci_resume(struct pci_dev
*);
1383 #define ide_pci_suspend NULL
1384 #define ide_pci_resume NULL
1387 void ide_map_sg(ide_drive_t
*, struct request
*);
1388 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1390 #define BAD_DMA_DRIVE 0
1391 #define GOOD_DMA_DRIVE 1
1393 struct drive_list_entry
{
1394 const char *id_model
;
1395 const char *id_firmware
;
1398 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1400 #ifdef CONFIG_BLK_DEV_IDEDMA
1401 int __ide_dma_bad_drive(ide_drive_t
*);
1402 int ide_id_dma_bug(ide_drive_t
*);
1404 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1406 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1408 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1411 void ide_dma_off_quietly(ide_drive_t
*);
1412 void ide_dma_off(ide_drive_t
*);
1413 void ide_dma_on(ide_drive_t
*);
1414 int ide_set_dma(ide_drive_t
*);
1415 void ide_check_dma_crc(ide_drive_t
*);
1416 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1418 int ide_build_sglist(ide_drive_t
*, struct request
*);
1419 void ide_destroy_dmatable(ide_drive_t
*);
1421 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1422 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1423 int ide_allocate_dma_engine(ide_hwif_t
*);
1424 void ide_release_dma_engine(ide_hwif_t
*);
1426 void ide_dma_host_set(ide_drive_t
*, int);
1427 extern int ide_dma_setup(ide_drive_t
*);
1428 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1429 extern void ide_dma_start(ide_drive_t
*);
1430 extern int __ide_dma_end(ide_drive_t
*);
1431 int ide_dma_test_irq(ide_drive_t
*);
1432 extern void ide_dma_lost_irq(ide_drive_t
*);
1433 extern void ide_dma_timeout(ide_drive_t
*);
1434 extern const struct ide_dma_ops sff_dma_ops
;
1435 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1438 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1439 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1440 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1441 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1442 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1443 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1444 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1445 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1446 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1447 #endif /* CONFIG_BLK_DEV_IDEDMA */
1449 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1450 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1453 #ifdef CONFIG_BLK_DEV_IDEACPI
1454 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1455 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1456 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1457 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1458 void ide_acpi_port_init_devices(ide_hwif_t
*);
1459 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1461 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1462 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1463 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1464 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1465 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1466 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1469 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1470 void ide_unregister(ide_hwif_t
*);
1472 void ide_register_region(struct gendisk
*);
1473 void ide_unregister_region(struct gendisk
*);
1475 void ide_undecoded_slave(ide_drive_t
*);
1477 void ide_port_apply_params(ide_hwif_t
*);
1479 struct ide_host
*ide_host_alloc_all(const struct ide_port_info
*, hw_regs_t
**);
1480 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1481 void ide_host_free(struct ide_host
*);
1482 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1484 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1485 struct ide_host
**);
1486 void ide_host_remove(struct ide_host
*);
1487 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1488 void ide_port_unregister_devices(ide_hwif_t
*);
1489 void ide_port_scan(ide_hwif_t
*);
1491 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1493 return hwif
->hwif_data
;
1496 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1498 hwif
->hwif_data
= data
;
1501 const char *ide_xfer_verbose(u8 mode
);
1502 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1503 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1505 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1506 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1511 u16 act8b
; /* t2 for 8-bit io */
1512 u16 rec8b
; /* t2i for 8-bit io */
1513 u16 cyc8b
; /* t0 for 8-bit io */
1514 u16 active
; /* t2 or tD */
1515 u16 recover
; /* t2i or tK */
1517 u16 udma
; /* t2CYCTYP/2 */
1521 IDE_TIMING_SETUP
= (1 << 0),
1522 IDE_TIMING_ACT8B
= (1 << 1),
1523 IDE_TIMING_REC8B
= (1 << 2),
1524 IDE_TIMING_CYC8B
= (1 << 3),
1525 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1527 IDE_TIMING_ACTIVE
= (1 << 4),
1528 IDE_TIMING_RECOVER
= (1 << 5),
1529 IDE_TIMING_CYCLE
= (1 << 6),
1530 IDE_TIMING_UDMA
= (1 << 7),
1531 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1532 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1533 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1536 struct ide_timing
*ide_timing_find_mode(u8
);
1537 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1538 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1539 struct ide_timing
*, unsigned int);
1540 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1542 int ide_scan_pio_blacklist(char *);
1544 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1546 int ide_set_pio_mode(ide_drive_t
*, u8
);
1547 int ide_set_dma_mode(ide_drive_t
*, u8
);
1549 void ide_set_pio(ide_drive_t
*, u8
);
1551 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1553 ide_set_pio(drive
, 255);
1556 extern spinlock_t ide_lock
;
1557 extern struct mutex ide_cfg_mtx
;
1559 * Structure locking:
1561 * ide_cfg_mtx and ide_lock together protect changes to
1562 * ide_hwif_t->{next,hwgroup}
1565 * ide_hwgroup_t->busy: ide_lock
1566 * ide_hwgroup_t->hwif: ide_lock
1567 * ide_hwif_t->mate: constant, no locking
1568 * ide_drive_t->hwif: constant, no locking
1571 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1573 extern struct bus_type ide_bus_type
;
1574 extern struct class *ide_port_class
;
1576 static inline void ide_dump_identify(u8
*id
)
1578 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1581 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1583 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1586 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1588 ide_drive_t
*peer
= &drive
->hwif
->drives
[(drive
->dn
^ 1) & 1];
1590 return peer
->present
? peer
: NULL
;