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/hdreg.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>
20 #ifdef CONFIG_BLK_DEV_IDEACPI
21 #include <acpi/acpi.h>
23 #include <asm/byteorder.h>
24 #include <asm/system.h>
26 #include <asm/semaphore.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 */
54 #define IDE_TUNE_NOAUTO 2
55 #define IDE_TUNE_AUTO 1
56 #define IDE_TUNE_DEFAULT 0
62 #define DMA_PIO_RETRY 1 /* retrying in PIO */
64 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
65 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
68 * Definitions for accessing IDE controller registers
70 #define IDE_NR_PORTS (10)
72 #define IDE_DATA_OFFSET (0)
73 #define IDE_ERROR_OFFSET (1)
74 #define IDE_NSECTOR_OFFSET (2)
75 #define IDE_SECTOR_OFFSET (3)
76 #define IDE_LCYL_OFFSET (4)
77 #define IDE_HCYL_OFFSET (5)
78 #define IDE_SELECT_OFFSET (6)
79 #define IDE_STATUS_OFFSET (7)
80 #define IDE_CONTROL_OFFSET (8)
81 #define IDE_IRQ_OFFSET (9)
83 #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
84 #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
85 #define IDE_ALTSTATUS_OFFSET IDE_CONTROL_OFFSET
86 #define IDE_IREASON_OFFSET IDE_NSECTOR_OFFSET
87 #define IDE_BCOUNTL_OFFSET IDE_LCYL_OFFSET
88 #define IDE_BCOUNTH_OFFSET IDE_HCYL_OFFSET
90 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
91 #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
92 #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
93 #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
94 #define DRIVE_READY (READY_STAT | SEEK_STAT)
96 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
98 #define SATA_NR_PORTS (3) /* 16 possible ?? */
100 #define SATA_STATUS_OFFSET (0)
101 #define SATA_ERROR_OFFSET (1)
102 #define SATA_CONTROL_OFFSET (2)
105 * Our Physical Region Descriptor (PRD) table should be large enough
106 * to handle the biggest I/O request we are likely to see. Since requests
107 * can have no more than 256 sectors, and since the typical blocksize is
108 * two or more sectors, we could get by with a limit of 128 entries here for
109 * the usual worst case. Most requests seem to include some contiguous blocks,
110 * further reducing the number of table entries required.
112 * The driver reverts to PIO mode for individual requests that exceed
113 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
114 * 100% of all crazy scenarios here is not necessary.
116 * As it turns out though, we must allocate a full 4KB page for this,
117 * so the two PRD tables (ide0 & ide1) will each get half of that,
118 * allowing each to have about 256 entries (8 bytes each) from this.
121 #define PRD_ENTRIES 256
124 * Some more useful definitions
126 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
127 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
128 #define SECTOR_SIZE 512
129 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
130 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
133 * Timeouts for various operations:
135 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
136 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
137 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
138 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
139 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
140 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
143 * Check for an interrupt and acknowledge the interrupt status
146 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
149 * hwif_chipset_t is used to keep track of the specific hardware
150 * chipset used by each IDE interface, if known.
152 enum { ide_unknown
, ide_generic
, ide_pci
,
153 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
154 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
155 ide_rz1000
, ide_trm290
,
156 ide_cmd646
, ide_cy82c693
, ide_4drives
,
157 ide_pmac
, ide_etrax100
, ide_acorn
,
158 ide_au1xxx
, ide_palm3710
161 typedef u8 hwif_chipset_t
;
164 * Structure to hold all information about the location of this port
166 typedef struct hw_regs_s
{
167 unsigned long io_ports
[IDE_NR_PORTS
]; /* task file registers */
168 int irq
; /* our irq number */
169 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
170 hwif_chipset_t chipset
;
174 struct hwif_s
* ide_find_port(unsigned long);
175 void ide_init_port_data(struct hwif_s
*, unsigned int);
176 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
178 static inline void ide_std_init_ports(hw_regs_t
*hw
,
179 unsigned long io_addr
,
180 unsigned long ctl_addr
)
184 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
185 hw
->io_ports
[i
] = io_addr
++;
187 hw
->io_ports
[IDE_CONTROL_OFFSET
] = ctl_addr
;
192 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
194 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
197 /* Currently only m68k, apus and m8xx need it */
198 #ifndef IDE_ARCH_ACK_INTR
199 # define ide_ack_intr(hwif) (1)
202 /* Currently only Atari needs it */
203 #ifndef IDE_ARCH_LOCK
204 # define ide_release_lock() do {} while (0)
205 # define ide_get_lock(hdlr, data) do {} while (0)
206 #endif /* IDE_ARCH_LOCK */
209 * Now for the data we need to maintain per-drive: ide_drive_t
212 #define ide_scsi 0x21
213 #define ide_disk 0x20
214 #define ide_optical 0x7
215 #define ide_cdrom 0x5
217 #define ide_floppy 0x0
220 * Special Driver Flags
222 * set_geometry : respecify drive geometry
223 * recalibrate : seek to cyl 0
224 * set_multmode : set multmode count
225 * set_tune : tune interface for drive
226 * serviced : service command
232 unsigned set_geometry
: 1;
233 unsigned recalibrate
: 1;
234 unsigned set_multmode
: 1;
235 unsigned set_tune
: 1;
236 unsigned serviced
: 1;
237 unsigned reserved
: 3;
242 * ATA-IDE Select Register, aka Device-Head
244 * head : always zeros here
245 * unit : drive select number: 0/1
247 * lba : using LBA instead of CHS
253 #if defined(__LITTLE_ENDIAN_BITFIELD)
259 #elif defined(__BIG_ENDIAN_BITFIELD)
266 #error "Please fix <asm/byteorder.h>"
269 } select_t
, ata_select_t
;
272 * Status returned from various ide_ functions
275 ide_stopped
, /* no drive operation was started */
276 ide_started
, /* a drive operation was started, handler was set */
280 struct ide_settings_s
;
282 #ifdef CONFIG_BLK_DEV_IDEACPI
283 struct ide_acpi_drive_link
;
284 struct ide_acpi_hwif_link
;
287 typedef struct ide_drive_s
{
288 char name
[4]; /* drive name, such as "hda" */
289 char driver_req
[10]; /* requests specific driver */
291 struct request_queue
*queue
; /* request queue */
293 struct request
*rq
; /* current request */
294 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
295 void *driver_data
; /* extra driver data */
296 struct hd_driveid
*id
; /* drive model identification info */
297 #ifdef CONFIG_IDE_PROC_FS
298 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
299 struct ide_settings_s
*settings
;/* /proc/ide/ drive settings */
301 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
303 unsigned long sleep
; /* sleep until this time */
304 unsigned long service_start
; /* time we started last request */
305 unsigned long service_time
; /* service time of last request */
306 unsigned long timeout
; /* max time to wait for irq */
308 special_t special
; /* special action flags */
309 select_t select
; /* basic drive/head select reg value */
311 u8 keep_settings
; /* restore settings after drive reset */
312 u8 using_dma
; /* disk is using dma for read/write */
313 u8 retry_pio
; /* retrying dma capable host in pio */
314 u8 state
; /* retry state */
315 u8 waiting_for_dma
; /* dma currently in progress */
316 u8 unmask
; /* okay to unmask other irqs */
317 u8 noflush
; /* don't attempt flushes */
318 u8 dsc_overlap
; /* DSC overlap */
319 u8 nice1
; /* give potential excess bandwidth */
321 unsigned present
: 1; /* drive is physically present */
322 unsigned dead
: 1; /* device ejected hint */
323 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
324 unsigned noprobe
: 1; /* from: hdx=noprobe */
325 unsigned removable
: 1; /* 1 if need to do check_media_change */
326 unsigned attach
: 1; /* needed for removable devices */
327 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
328 unsigned no_unmask
: 1; /* disallow setting unmask bit */
329 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
330 unsigned atapi_overlap
: 1; /* ATAPI overlap (not supported) */
331 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
332 unsigned nodma
: 1; /* disallow DMA */
333 unsigned autotune
: 2; /* 0=default, 1=autotune, 2=noautotune */
334 unsigned remap_0_to_1
: 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
335 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
336 unsigned vdma
: 1; /* 1=doing PIO over DMA 0=doing normal DMA */
337 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
338 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
339 unsigned post_reset
: 1;
340 unsigned udma33_warned
: 1;
342 u8 addressing
; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
343 u8 quirk_list
; /* considered quirky, set for a specific host */
344 u8 init_speed
; /* transfer rate set at boot */
345 u8 current_speed
; /* current transfer rate set */
346 u8 desired_speed
; /* desired transfer rate set */
347 u8 dn
; /* now wide spread use */
348 u8 wcache
; /* status of write cache */
349 u8 acoustic
; /* acoustic management */
350 u8 media
; /* disk, cdrom, tape, floppy, ... */
351 u8 ctl
; /* "normal" value for Control register */
352 u8 ready_stat
; /* min status value for drive ready */
353 u8 mult_count
; /* current multiple sector setting */
354 u8 mult_req
; /* requested multiple sector setting */
355 u8 tune_req
; /* requested drive tuning setting */
356 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
357 u8 bad_wstat
; /* used for ignoring WRERR_STAT */
358 u8 nowerr
; /* used for ignoring WRERR_STAT */
359 u8 sect0
; /* offset of first sector for DM6:DDO */
360 u8 head
; /* "real" number of heads */
361 u8 sect
; /* "real" sectors per track */
362 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
363 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
365 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
366 unsigned int cyl
; /* "real" number of cyls */
367 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
368 unsigned int failures
; /* current failure count */
369 unsigned int max_failures
; /* maximum allowed failure count */
370 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
372 u64 capacity64
; /* total number of sectors */
374 int lun
; /* logical unit */
375 int crc_count
; /* crc counter to reduce drive speed */
376 #ifdef CONFIG_BLK_DEV_IDEACPI
377 struct ide_acpi_drive_link
*acpidata
;
379 struct list_head list
;
380 struct device gendev
;
381 struct completion gendev_rel_comp
; /* to deal with device release() */
384 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
386 #define IDE_CHIPSET_PCI_MASK \
387 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
388 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
390 struct ide_port_info
;
392 typedef struct hwif_s
{
393 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
394 struct hwif_s
*mate
; /* other hwif from same PCI chip */
395 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
396 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
398 char name
[6]; /* name of interface, eg. "ide0" */
400 /* task file registers for pata and sata */
401 unsigned long io_ports
[IDE_NR_PORTS
];
402 unsigned long sata_scr
[SATA_NR_PORTS
];
404 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
406 u8 major
; /* our major number */
407 u8 index
; /* 0 for ide0; 1 for ide1; ... */
408 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
409 u8 bus_state
; /* power state of the IDE bus */
419 u8 cbl
; /* cable type */
421 hwif_chipset_t chipset
; /* sub-module for tuning.. */
425 const struct ide_port_info
*cds
; /* chipset device struct */
427 ide_ack_intr_t
*ack_intr
;
429 void (*rw_disk
)(ide_drive_t
*, struct request
*);
432 ide_hwif_ops_t
*hwifops
;
434 /* host specific initialization of devices on a port */
435 void (*port_init_devs
)(struct hwif_s
*);
436 /* routine to program host for PIO mode */
437 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
438 /* routine to program host for DMA mode */
439 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
440 /* tweaks hardware to select drive */
441 void (*selectproc
)(ide_drive_t
*);
442 /* chipset polling based on hba specifics */
443 int (*reset_poll
)(ide_drive_t
*);
444 /* chipset specific changes to default for device-hba resets */
445 void (*pre_reset
)(ide_drive_t
*);
446 /* routine to reset controller after a disk reset */
447 void (*resetproc
)(ide_drive_t
*);
448 /* special host masking for drive selection */
449 void (*maskproc
)(ide_drive_t
*, int);
450 /* check host's drive quirk list */
451 void (*quirkproc
)(ide_drive_t
*);
453 u8 (*mdma_filter
)(ide_drive_t
*);
454 u8 (*udma_filter
)(ide_drive_t
*);
456 u8 (*cable_detect
)(struct hwif_s
*);
458 void (*ata_input_data
)(ide_drive_t
*, void *, u32
);
459 void (*ata_output_data
)(ide_drive_t
*, void *, u32
);
461 void (*atapi_input_bytes
)(ide_drive_t
*, void *, u32
);
462 void (*atapi_output_bytes
)(ide_drive_t
*, void *, u32
);
464 void (*dma_host_set
)(ide_drive_t
*, int);
465 int (*dma_setup
)(ide_drive_t
*);
466 void (*dma_exec_cmd
)(ide_drive_t
*, u8
);
467 void (*dma_start
)(ide_drive_t
*);
468 int (*ide_dma_end
)(ide_drive_t
*drive
);
469 int (*ide_dma_test_irq
)(ide_drive_t
*drive
);
470 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
471 void (*dma_lost_irq
)(ide_drive_t
*drive
);
472 void (*dma_timeout
)(ide_drive_t
*drive
);
474 void (*OUTB
)(u8 addr
, unsigned long port
);
475 void (*OUTBSYNC
)(ide_drive_t
*drive
, u8 addr
, unsigned long port
);
476 void (*OUTW
)(u16 addr
, unsigned long port
);
477 void (*OUTSW
)(unsigned long port
, void *addr
, u32 count
);
478 void (*OUTSL
)(unsigned long port
, void *addr
, u32 count
);
480 u8 (*INB
)(unsigned long port
);
481 u16 (*INW
)(unsigned long port
);
482 void (*INSW
)(unsigned long port
, void *addr
, u32 count
);
483 void (*INSL
)(unsigned long port
, void *addr
, u32 count
);
485 /* dma physical region descriptor table (cpu view) */
486 unsigned int *dmatable_cpu
;
487 /* dma physical region descriptor table (dma view) */
488 dma_addr_t dmatable_dma
;
489 /* Scatter-gather list used to build the above */
490 struct scatterlist
*sg_table
;
491 int sg_max_nents
; /* Maximum number of entries in it */
492 int sg_nents
; /* Current number of entries in it */
493 int sg_dma_direction
; /* dma transfer direction */
495 /* data phase of the active command (currently only valid for PIO/DMA) */
500 struct scatterlist
*cursg
;
501 unsigned int cursg_ofs
;
503 int rqsize
; /* max sectors per request */
504 int irq
; /* our irq number */
506 unsigned long dma_base
; /* base addr for dma ports */
507 unsigned long dma_command
; /* dma command register */
508 unsigned long dma_vendor1
; /* dma vendor 1 register */
509 unsigned long dma_status
; /* dma status register */
510 unsigned long dma_vendor3
; /* dma vendor 3 register */
511 unsigned long dma_prdtable
; /* actual prd table address */
513 unsigned long config_data
; /* for use by chipset-specific code */
514 unsigned long select_data
; /* for use by chipset-specific code */
516 unsigned long extra_base
; /* extra addr for dma ports */
517 unsigned extra_ports
; /* number of extra dma ports */
519 unsigned noprobe
: 1; /* don't probe for this interface */
520 unsigned present
: 1; /* this interface exists */
521 unsigned serialized
: 1; /* serialized all channel operation */
522 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
523 unsigned reset
: 1; /* reset after probe */
524 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
525 unsigned mmio
: 1; /* host uses MMIO */
526 unsigned straight8
: 1; /* Alan's straight 8 check */
528 struct device gendev
;
529 struct device
*portdev
;
531 struct completion gendev_rel_comp
; /* To deal with device release() */
533 void *hwif_data
; /* extra hwif data */
537 #ifdef CONFIG_BLK_DEV_IDEACPI
538 struct ide_acpi_hwif_link
*acpidata
;
540 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
543 * internal ide interrupt handler type
545 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
546 typedef int (ide_expiry_t
)(ide_drive_t
*);
548 /* used by ide-cd, ide-floppy, etc. */
549 typedef void (xfer_func_t
)(ide_drive_t
*, void *, u32
);
551 typedef struct hwgroup_s
{
552 /* irq handler, if active */
553 ide_startstop_t (*handler
)(ide_drive_t
*);
555 /* BOOL: protects all fields below */
557 /* BOOL: wake us up on timer expiry */
558 unsigned int sleeping
: 1;
559 /* BOOL: polling active & poll_timeout field valid */
560 unsigned int polling
: 1;
561 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
562 unsigned int resetting
: 1;
566 /* ptr to current hwif in linked-list */
569 /* current request */
573 struct timer_list timer
;
574 /* timeout value during long polls */
575 unsigned long poll_timeout
;
576 /* queried upon timeouts */
577 int (*expiry
)(ide_drive_t
*);
583 typedef struct ide_driver_s ide_driver_t
;
585 extern struct mutex ide_setting_mtx
;
587 int set_io_32bit(ide_drive_t
*, int);
588 int set_pio_mode(ide_drive_t
*, int);
589 int set_using_dma(ide_drive_t
*, int);
591 /* ATAPI packet command flags */
593 /* set when an error is considered normal - no retry (ide-tape) */
594 PC_FLAG_ABORT
= (1 << 0),
595 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
596 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
597 PC_FLAG_DMA_OK
= (1 << 3),
598 PC_FLAG_DMA_RECOMMENDED
= (1 << 4),
599 PC_FLAG_DMA_IN_PROGRESS
= (1 << 5),
600 PC_FLAG_DMA_ERROR
= (1 << 6),
601 PC_FLAG_WRITING
= (1 << 7),
602 /* command timed out */
603 PC_FLAG_TIMEDOUT
= (1 << 8),
606 struct ide_atapi_pc
{
607 /* actual packet bytes */
609 /* incremented on each retry */
613 /* bytes to transfer */
615 /* bytes actually transferred */
620 /* current buffer position */
623 /* missing/available data on the current buffer */
626 /* the corresponding request */
632 * those are more or less driver-specific and some of them are subject
633 * to change/removal later.
636 void (*idefloppy_callback
) (ide_drive_t
*);
637 ide_startstop_t (*idetape_callback
) (ide_drive_t
*);
640 struct idetape_bh
*bh
;
643 /* idescsi only for now */
644 struct scatterlist
*sg
;
647 struct scsi_cmnd
*scsi_cmd
;
648 void (*done
) (struct scsi_cmnd
*);
650 unsigned long timeout
;
653 #ifdef CONFIG_IDE_PROC_FS
655 * configurable drive settings
662 #define SETTING_READ (1 << 0)
663 #define SETTING_WRITE (1 << 1)
664 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
666 typedef int (ide_procset_t
)(ide_drive_t
*, int);
667 typedef struct ide_settings_s
{
678 struct ide_settings_s
*next
;
681 int ide_add_setting(ide_drive_t
*, const char *, int, int, int, int, int, int, void *, ide_procset_t
*set
);
684 * /proc/ide interface
689 read_proc_t
*read_proc
;
690 write_proc_t
*write_proc
;
693 void proc_ide_create(void);
694 void proc_ide_destroy(void);
695 void ide_proc_register_port(ide_hwif_t
*);
696 void ide_proc_port_register_devices(ide_hwif_t
*);
697 void ide_proc_unregister_device(ide_drive_t
*);
698 void ide_proc_unregister_port(ide_hwif_t
*);
699 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
700 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
702 void ide_add_generic_settings(ide_drive_t
*);
704 read_proc_t proc_ide_read_capacity
;
705 read_proc_t proc_ide_read_geometry
;
707 #ifdef CONFIG_BLK_DEV_IDEPCI
708 void ide_pci_create_host_proc(const char *, get_info_t
*);
712 * Standard exit stuff:
714 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
723 *start = page + off; \
727 static inline void proc_ide_create(void) { ; }
728 static inline void proc_ide_destroy(void) { ; }
729 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
730 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
731 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
732 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
733 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
734 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
735 static inline void ide_add_generic_settings(ide_drive_t
*drive
) { ; }
736 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
740 * Power Management step value (rq->pm->pm_step).
742 * The step value starts at 0 (ide_pm_state_start_suspend) for a
743 * suspend operation or 1000 (ide_pm_state_start_resume) for a
746 * For each step, the core calls the subdriver start_power_step() first.
748 * - ide_stopped : In this case, the core calls us back again unless
749 * step have been set to ide_power_state_completed.
750 * - ide_started : In this case, the channel is left busy until an
751 * async event (interrupt) occurs.
752 * Typically, start_power_step() will issue a taskfile request with
755 * Upon reception of the interrupt, the core will call complete_power_step()
756 * with the error code if any. This routine should update the step value
757 * and return. It should not start a new request. The core will call
758 * start_power_step for the new step value, unless step have been set to
759 * ide_power_state_completed.
761 * Subdrivers are expected to define their own additional power
762 * steps from 1..999 for suspend and from 1001..1999 for resume,
763 * other values are reserved for future use.
767 ide_pm_state_completed
= -1,
768 ide_pm_state_start_suspend
= 0,
769 ide_pm_state_start_resume
= 1000,
773 * Subdrivers support.
775 * The gendriver.owner field should be set to the module owner of this driver.
776 * The gendriver.name field should be set to the name of this driver
778 struct ide_driver_s
{
781 unsigned supports_dsc_overlap
: 1;
782 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
783 int (*end_request
)(ide_drive_t
*, int, int);
784 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
785 ide_startstop_t (*abort
)(ide_drive_t
*, struct request
*rq
);
786 struct device_driver gen_driver
;
787 int (*probe
)(ide_drive_t
*);
788 void (*remove
)(ide_drive_t
*);
789 void (*resume
)(ide_drive_t
*);
790 void (*shutdown
)(ide_drive_t
*);
791 #ifdef CONFIG_IDE_PROC_FS
792 ide_proc_entry_t
*proc
;
796 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
798 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*, unsigned, unsigned long);
801 * ide_hwifs[] is the master data structure used to keep track
802 * of just about everything in ide.c. Whenever possible, routines
803 * should be using pointers to a drive (ide_drive_t *) or
804 * pointers to a hwif (ide_hwif_t *), rather than indexing this
805 * structure directly (the allocation/layout may change!).
809 extern ide_hwif_t ide_hwifs
[]; /* master data repository */
811 extern int noautodma
;
813 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
814 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
815 int uptodate
, int nr_sectors
);
817 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
819 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
822 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
824 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
826 ide_startstop_t
__ide_abort(ide_drive_t
*, struct request
*);
828 extern ide_startstop_t
ide_abort(ide_drive_t
*, const char *);
830 extern void ide_fix_driveid(struct hd_driveid
*);
832 extern void ide_fixstring(u8
*, const int, const int);
834 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
836 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
838 extern void ide_init_drive_cmd (struct request
*rq
);
841 * "action" parameter type for ide_do_drive_cmd() below.
844 ide_wait
, /* insert rq at end of list, and wait for it */
845 ide_preempt
, /* insert rq in front of current request */
846 ide_head_wait
, /* insert rq in front of current request and wait for it */
847 ide_end
/* insert rq at end of list, but don't wait for it */
850 extern int ide_do_drive_cmd(ide_drive_t
*, struct request
*, ide_action_t
);
852 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
855 IDE_TFLAG_LBA48
= (1 << 0),
856 IDE_TFLAG_NO_SELECT_MASK
= (1 << 1),
857 IDE_TFLAG_FLAGGED
= (1 << 2),
858 IDE_TFLAG_OUT_DATA
= (1 << 3),
859 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
860 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
861 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
862 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
863 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
864 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
865 IDE_TFLAG_OUT_HOB_NSECT
|
866 IDE_TFLAG_OUT_HOB_LBAL
|
867 IDE_TFLAG_OUT_HOB_LBAM
|
868 IDE_TFLAG_OUT_HOB_LBAH
,
869 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
870 IDE_TFLAG_OUT_NSECT
= (1 << 10),
871 IDE_TFLAG_OUT_LBAL
= (1 << 11),
872 IDE_TFLAG_OUT_LBAM
= (1 << 12),
873 IDE_TFLAG_OUT_LBAH
= (1 << 13),
874 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
875 IDE_TFLAG_OUT_NSECT
|
879 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
880 IDE_TFLAG_WRITE
= (1 << 15),
881 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
882 IDE_TFLAG_IN_DATA
= (1 << 17),
883 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
884 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
885 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
886 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
887 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
888 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
889 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
890 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
891 IDE_TFLAG_IN_HOB_LBAM
|
892 IDE_TFLAG_IN_HOB_LBAH
,
893 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
894 IDE_TFLAG_IN_HOB_NSECT
|
895 IDE_TFLAG_IN_HOB_LBA
,
896 IDE_TFLAG_IN_NSECT
= (1 << 25),
897 IDE_TFLAG_IN_LBAL
= (1 << 26),
898 IDE_TFLAG_IN_LBAM
= (1 << 27),
899 IDE_TFLAG_IN_LBAH
= (1 << 28),
900 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
903 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
905 IDE_TFLAG_IN_DEVICE
= (1 << 29),
906 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
908 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
910 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
912 /* force 16-bit I/O operations */
913 IDE_TFLAG_IO_16BIT
= (1 << 30),
914 /* ide_task_t was allocated using kmalloc() */
915 IDE_TFLAG_DYN
= (1 << 31),
918 struct ide_taskfile
{
919 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
921 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
927 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
930 u8 error
; /* read: error */
931 u8 feature
; /* write: feature */
934 u8 nsect
; /* 8: number of sectors */
935 u8 lbal
; /* 9: LBA low */
936 u8 lbam
; /* 10: LBA mid */
937 u8 lbah
; /* 11: LBA high */
939 u8 device
; /* 12: device select */
942 u8 status
; /*  read: status  */
943 u8 command
; /* write: command */
947 typedef struct ide_task_s
{
949 struct ide_taskfile tf
;
954 struct request
*rq
; /* copy of request */
955 void *special
; /* valid_t generally */
958 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
959 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
961 extern void SELECT_DRIVE(ide_drive_t
*);
962 extern void SELECT_MASK(ide_drive_t
*, int);
964 extern int drive_is_ready(ide_drive_t
*);
966 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
968 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
970 void task_end_request(ide_drive_t
*, struct request
*, u8
);
972 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
973 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
975 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
976 int ide_cmd_ioctl(ide_drive_t
*, unsigned int, unsigned long);
977 int ide_task_ioctl(ide_drive_t
*, unsigned int, unsigned long);
979 extern int system_bus_clock(void);
981 extern int ide_driveid_update(ide_drive_t
*);
982 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
983 extern u8
eighty_ninty_three (ide_drive_t
*);
984 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
986 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
988 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
990 extern int ide_spin_wait_hwgroup(ide_drive_t
*);
991 extern void ide_timer_expiry(unsigned long);
992 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
993 extern void do_ide_request(struct request_queue
*);
995 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
997 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
998 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
999 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1001 #define ide_pci_register_driver(d) pci_register_driver(d)
1004 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int, u8
*);
1005 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1007 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1008 void ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1010 static inline void ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1011 const struct ide_port_info
*d
) { }
1014 extern void default_hwif_iops(ide_hwif_t
*);
1015 extern void default_hwif_mmiops(ide_hwif_t
*);
1016 extern void default_hwif_transport(ide_hwif_t
*);
1018 typedef struct ide_pci_enablebit_s
{
1019 u8 reg
; /* byte pci reg holding the enable-bit */
1020 u8 mask
; /* mask to isolate the enable-bit */
1021 u8 val
; /* value of masked reg when "enabled" */
1022 } ide_pci_enablebit_t
;
1025 /* Uses ISA control ports not PCI ones. */
1026 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1027 /* single port device */
1028 IDE_HFLAG_SINGLE
= (1 << 1),
1029 /* don't use legacy PIO blacklist */
1030 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1031 /* don't use conservative PIO "downgrade" */
1032 IDE_HFLAG_PIO_NO_DOWNGRADE
= (1 << 3),
1033 /* use PIO8/9 for prefetch off/on */
1034 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1035 /* use PIO6/7 for fast-devsel off/on */
1036 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1037 /* use 100-102 and 200-202 PIO values to set DMA modes */
1038 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1040 * keep DMA setting when programming PIO mode, may be used only
1041 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1043 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1044 /* program host for the transfer mode after programming device */
1045 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1046 /* don't program host/device for the transfer mode ("smart" hosts) */
1047 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1048 /* trust BIOS for programming chipset/device for DMA */
1049 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1050 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
1051 IDE_HFLAG_VDMA
= (1 << 11),
1052 /* ATAPI DMA is unsupported */
1053 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1054 /* set if host is a "bootable" controller */
1055 IDE_HFLAG_BOOTABLE
= (1 << 13),
1056 /* host doesn't support DMA */
1057 IDE_HFLAG_NO_DMA
= (1 << 14),
1058 /* check if host is PCI IDE device before allowing DMA */
1059 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1060 /* don't autotune PIO */
1061 IDE_HFLAG_NO_AUTOTUNE
= (1 << 16),
1062 /* host is CS5510/CS5520 */
1063 IDE_HFLAG_CS5520
= IDE_HFLAG_VDMA
,
1065 IDE_HFLAG_NO_LBA48
= (1 << 17),
1067 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1068 /* data FIFO is cleared by an error */
1069 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1070 /* serialize ports */
1071 IDE_HFLAG_SERIALIZE
= (1 << 20),
1072 /* use legacy IRQs */
1073 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1074 /* force use of legacy IRQs */
1075 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1076 /* limit LBA48 requests to 256 sectors */
1077 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1078 /* use 32-bit I/O ops */
1079 IDE_HFLAG_IO_32BIT
= (1 << 24),
1081 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1082 IDE_HFLAG_ABUSE_SET_DMA_MODE
= (1 << 26),
1083 /* host is CY82C693 */
1084 IDE_HFLAG_CY82C693
= (1 << 27),
1085 /* force host out of "simplex" mode */
1086 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1087 /* DSC overlap is unsupported */
1088 IDE_HFLAG_NO_DSC
= (1 << 29),
1089 /* never use 32-bit I/O ops */
1090 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1091 /* never unmask IRQs */
1092 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1095 #ifdef CONFIG_BLK_DEV_OFFBOARD
1096 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1098 # define IDE_HFLAG_OFF_BOARD 0
1101 struct ide_port_info
{
1103 unsigned int (*init_chipset
)(struct pci_dev
*, const char *);
1104 void (*init_iops
)(ide_hwif_t
*);
1105 void (*init_hwif
)(ide_hwif_t
*);
1106 void (*init_dma
)(ide_hwif_t
*, unsigned long);
1107 ide_pci_enablebit_t enablebits
[2];
1108 hwif_chipset_t chipset
;
1117 int ide_setup_pci_device(struct pci_dev
*, const struct ide_port_info
*);
1118 int ide_setup_pci_devices(struct pci_dev
*, struct pci_dev
*, const struct ide_port_info
*);
1120 void ide_map_sg(ide_drive_t
*, struct request
*);
1121 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1123 #define BAD_DMA_DRIVE 0
1124 #define GOOD_DMA_DRIVE 1
1126 struct drive_list_entry
{
1127 const char *id_model
;
1128 const char *id_firmware
;
1131 int ide_in_drive_list(struct hd_driveid
*, const struct drive_list_entry
*);
1133 #ifdef CONFIG_BLK_DEV_IDEDMA
1134 int __ide_dma_bad_drive(ide_drive_t
*);
1135 int ide_id_dma_bug(ide_drive_t
*);
1137 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1139 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1141 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1144 void ide_dma_off_quietly(ide_drive_t
*);
1145 void ide_dma_off(ide_drive_t
*);
1146 void ide_dma_on(ide_drive_t
*);
1147 int ide_set_dma(ide_drive_t
*);
1148 void ide_check_dma_crc(ide_drive_t
*);
1149 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1151 int ide_build_sglist(ide_drive_t
*, struct request
*);
1152 void ide_destroy_dmatable(ide_drive_t
*);
1154 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1155 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1156 extern int ide_release_dma(ide_hwif_t
*);
1157 extern void ide_setup_dma(ide_hwif_t
*, unsigned long);
1159 void ide_dma_host_set(ide_drive_t
*, int);
1160 extern int ide_dma_setup(ide_drive_t
*);
1161 extern void ide_dma_start(ide_drive_t
*);
1162 extern int __ide_dma_end(ide_drive_t
*);
1163 extern void ide_dma_lost_irq(ide_drive_t
*);
1164 extern void ide_dma_timeout(ide_drive_t
*);
1165 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1168 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1169 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1170 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1171 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1172 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1173 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1174 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1175 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1176 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1177 #endif /* CONFIG_BLK_DEV_IDEDMA */
1179 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1180 static inline void ide_release_dma(ide_hwif_t
*drive
) {;}
1183 #ifdef CONFIG_BLK_DEV_IDEACPI
1184 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1185 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1186 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1187 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1188 void ide_acpi_port_init_devices(ide_hwif_t
*);
1189 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1191 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1192 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1193 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1194 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1195 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1196 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1199 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1200 extern int ide_hwif_request_regions(ide_hwif_t
*hwif
);
1201 extern void ide_hwif_release_regions(ide_hwif_t
* hwif
);
1202 void ide_unregister(unsigned int);
1204 void ide_register_region(struct gendisk
*);
1205 void ide_unregister_region(struct gendisk
*);
1207 void ide_undecoded_slave(ide_drive_t
*);
1209 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*);
1210 int ide_device_add(u8 idx
[4], const struct ide_port_info
*);
1211 void ide_port_unregister_devices(ide_hwif_t
*);
1212 void ide_port_scan(ide_hwif_t
*);
1214 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1216 return hwif
->hwif_data
;
1219 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1221 hwif
->hwif_data
= data
;
1224 const char *ide_xfer_verbose(u8 mode
);
1225 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1226 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1228 static inline int ide_dev_has_iordy(struct hd_driveid
*id
)
1230 return ((id
->field_valid
& 2) && (id
->capability
& 8)) ? 1 : 0;
1233 static inline int ide_dev_is_sata(struct hd_driveid
*id
)
1236 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1237 * verifying that word 80 by casting it to a signed type --
1238 * this trick allows us to filter out the reserved values of
1239 * 0x0000 and 0xffff along with the earlier ATA revisions...
1241 if (id
->hw_config
== 0 && (short)id
->major_rev_num
>= 0x0020)
1246 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1247 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1249 typedef struct ide_pio_timings_s
{
1250 int setup_time
; /* Address setup (ns) minimum */
1251 int active_time
; /* Active pulse (ns) minimum */
1252 int cycle_time
; /* Cycle time (ns) minimum = */
1253 /* active + recovery (+ setup for some chips) */
1254 } ide_pio_timings_t
;
1256 unsigned int ide_pio_cycle_time(ide_drive_t
*, u8
);
1257 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1258 extern const ide_pio_timings_t ide_pio_timings
[6];
1260 int ide_set_pio_mode(ide_drive_t
*, u8
);
1261 int ide_set_dma_mode(ide_drive_t
*, u8
);
1263 void ide_set_pio(ide_drive_t
*, u8
);
1265 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1267 ide_set_pio(drive
, 255);
1270 extern spinlock_t ide_lock
;
1271 extern struct mutex ide_cfg_mtx
;
1273 * Structure locking:
1275 * ide_cfg_mtx and ide_lock together protect changes to
1276 * ide_hwif_t->{next,hwgroup}
1279 * ide_hwgroup_t->busy: ide_lock
1280 * ide_hwgroup_t->hwif: ide_lock
1281 * ide_hwif_t->mate: constant, no locking
1282 * ide_drive_t->hwif: constant, no locking
1285 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1287 extern struct bus_type ide_bus_type
;
1288 extern struct class *ide_port_class
;
1290 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1291 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1293 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1294 #define ide_id_has_flush_cache_ext(id) \
1295 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1297 static inline void ide_dump_identify(u8
*id
)
1299 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1302 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1304 struct pci_dev
*dev
= to_pci_dev(hwif
->dev
);
1305 return hwif
->dev
? pcibus_to_node(dev
->bus
) : -1;
1308 static inline ide_drive_t
*ide_get_paired_drive(ide_drive_t
*drive
)
1310 ide_hwif_t
*hwif
= HWIF(drive
);
1312 return &hwif
->drives
[(drive
->dn
^ 1) & 1];
1315 static inline void ide_set_irq(ide_drive_t
*drive
, int on
)
1317 ide_hwif_t
*hwif
= drive
->hwif
;
1319 hwif
->OUTB(drive
->ctl
| (on
? 0 : 2),
1320 hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1323 static inline u8
ide_read_status(ide_drive_t
*drive
)
1325 ide_hwif_t
*hwif
= drive
->hwif
;
1327 return hwif
->INB(hwif
->io_ports
[IDE_STATUS_OFFSET
]);
1330 static inline u8
ide_read_altstatus(ide_drive_t
*drive
)
1332 ide_hwif_t
*hwif
= drive
->hwif
;
1334 return hwif
->INB(hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1337 static inline u8
ide_read_error(ide_drive_t
*drive
)
1339 ide_hwif_t
*hwif
= drive
->hwif
;
1341 return hwif
->INB(hwif
->io_ports
[IDE_ERROR_OFFSET
]);
1345 * Too bad. The drive wants to send us data which we are not ready to accept.
1346 * Just throw it away.
1348 static inline void ide_atapi_discard_data(ide_drive_t
*drive
, unsigned bcount
)
1350 ide_hwif_t
*hwif
= drive
->hwif
;
1352 /* FIXME: use ->atapi_input_bytes */
1354 (void)hwif
->INB(hwif
->io_ports
[IDE_DATA_OFFSET
]);
1357 static inline void ide_atapi_write_zeros(ide_drive_t
*drive
, unsigned bcount
)
1359 ide_hwif_t
*hwif
= drive
->hwif
;
1361 /* FIXME: use ->atapi_output_bytes */
1363 hwif
->OUTB(0, hwif
->io_ports
[IDE_DATA_OFFSET
]);