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/mutex.h>
28 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
29 # define SUPPORT_VLB_SYNC 0
31 # define SUPPORT_VLB_SYNC 1
35 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
39 #define IDE_NO_IRQ (-1)
41 typedef unsigned char byte
; /* used everywhere */
44 * Probably not wise to fiddle with these
46 #define ERROR_MAX 8 /* Max read/write errors per sector */
47 #define ERROR_RESET 3 /* Reset controller every 4th retry */
48 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
53 #define IDE_TUNE_NOAUTO 2
54 #define IDE_TUNE_AUTO 1
55 #define IDE_TUNE_DEFAULT 0
61 #define DMA_PIO_RETRY 1 /* retrying in PIO */
63 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
64 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
67 * Definitions for accessing IDE controller registers
69 #define IDE_NR_PORTS (10)
71 #define IDE_DATA_OFFSET (0)
72 #define IDE_ERROR_OFFSET (1)
73 #define IDE_NSECTOR_OFFSET (2)
74 #define IDE_SECTOR_OFFSET (3)
75 #define IDE_LCYL_OFFSET (4)
76 #define IDE_HCYL_OFFSET (5)
77 #define IDE_SELECT_OFFSET (6)
78 #define IDE_STATUS_OFFSET (7)
79 #define IDE_CONTROL_OFFSET (8)
80 #define IDE_IRQ_OFFSET (9)
82 #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
83 #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
84 #define IDE_ALTSTATUS_OFFSET IDE_CONTROL_OFFSET
85 #define IDE_IREASON_OFFSET IDE_NSECTOR_OFFSET
86 #define IDE_BCOUNTL_OFFSET IDE_LCYL_OFFSET
87 #define IDE_BCOUNTH_OFFSET IDE_HCYL_OFFSET
89 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
90 #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
91 #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
92 #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
93 #define DRIVE_READY (READY_STAT | SEEK_STAT)
95 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
97 #define SATA_NR_PORTS (3) /* 16 possible ?? */
99 #define SATA_STATUS_OFFSET (0)
100 #define SATA_ERROR_OFFSET (1)
101 #define SATA_CONTROL_OFFSET (2)
104 * Our Physical Region Descriptor (PRD) table should be large enough
105 * to handle the biggest I/O request we are likely to see. Since requests
106 * can have no more than 256 sectors, and since the typical blocksize is
107 * two or more sectors, we could get by with a limit of 128 entries here for
108 * the usual worst case. Most requests seem to include some contiguous blocks,
109 * further reducing the number of table entries required.
111 * The driver reverts to PIO mode for individual requests that exceed
112 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
113 * 100% of all crazy scenarios here is not necessary.
115 * As it turns out though, we must allocate a full 4KB page for this,
116 * so the two PRD tables (ide0 & ide1) will each get half of that,
117 * allowing each to have about 256 entries (8 bytes each) from this.
120 #define PRD_ENTRIES 256
123 * Some more useful definitions
125 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
126 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
127 #define SECTOR_SIZE 512
128 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
129 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
132 * Timeouts for various operations:
134 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
135 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
136 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
137 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
138 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
139 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
142 * Check for an interrupt and acknowledge the interrupt status
145 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
148 * hwif_chipset_t is used to keep track of the specific hardware
149 * chipset used by each IDE interface, if known.
151 enum { ide_unknown
, ide_generic
, ide_pci
,
152 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
153 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
154 ide_rz1000
, ide_trm290
,
155 ide_cmd646
, ide_cy82c693
, ide_4drives
,
156 ide_pmac
, ide_etrax100
, ide_acorn
,
157 ide_au1xxx
, ide_palm3710
160 typedef u8 hwif_chipset_t
;
163 * Structure to hold all information about the location of this port
165 typedef struct hw_regs_s
{
166 unsigned long io_ports
[IDE_NR_PORTS
]; /* task file registers */
167 int irq
; /* our irq number */
168 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
169 hwif_chipset_t chipset
;
173 void ide_init_port_data(struct hwif_s
*, unsigned int);
174 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
176 static inline void ide_std_init_ports(hw_regs_t
*hw
,
177 unsigned long io_addr
,
178 unsigned long ctl_addr
)
182 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
183 hw
->io_ports
[i
] = io_addr
++;
185 hw
->io_ports
[IDE_CONTROL_OFFSET
] = ctl_addr
;
190 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
192 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
195 /* Currently only m68k, apus and m8xx need it */
196 #ifndef IDE_ARCH_ACK_INTR
197 # define ide_ack_intr(hwif) (1)
200 /* Currently only Atari needs it */
201 #ifndef IDE_ARCH_LOCK
202 # define ide_release_lock() do {} while (0)
203 # define ide_get_lock(hdlr, data) do {} while (0)
204 #endif /* IDE_ARCH_LOCK */
207 * Now for the data we need to maintain per-drive: ide_drive_t
210 #define ide_scsi 0x21
211 #define ide_disk 0x20
212 #define ide_optical 0x7
213 #define ide_cdrom 0x5
215 #define ide_floppy 0x0
218 * Special Driver Flags
220 * set_geometry : respecify drive geometry
221 * recalibrate : seek to cyl 0
222 * set_multmode : set multmode count
223 * set_tune : tune interface for drive
224 * serviced : service command
230 unsigned set_geometry
: 1;
231 unsigned recalibrate
: 1;
232 unsigned set_multmode
: 1;
233 unsigned set_tune
: 1;
234 unsigned serviced
: 1;
235 unsigned reserved
: 3;
240 * ATA-IDE Select Register, aka Device-Head
242 * head : always zeros here
243 * unit : drive select number: 0/1
245 * lba : using LBA instead of CHS
251 #if defined(__LITTLE_ENDIAN_BITFIELD)
257 #elif defined(__BIG_ENDIAN_BITFIELD)
264 #error "Please fix <asm/byteorder.h>"
267 } select_t
, ata_select_t
;
270 * Status returned from various ide_ functions
273 ide_stopped
, /* no drive operation was started */
274 ide_started
, /* a drive operation was started, handler was set */
278 struct ide_settings_s
;
280 #ifdef CONFIG_BLK_DEV_IDEACPI
281 struct ide_acpi_drive_link
;
282 struct ide_acpi_hwif_link
;
285 typedef struct ide_drive_s
{
286 char name
[4]; /* drive name, such as "hda" */
287 char driver_req
[10]; /* requests specific driver */
289 struct request_queue
*queue
; /* request queue */
291 struct request
*rq
; /* current request */
292 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
293 void *driver_data
; /* extra driver data */
294 struct hd_driveid
*id
; /* drive model identification info */
295 #ifdef CONFIG_IDE_PROC_FS
296 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
297 struct ide_settings_s
*settings
;/* /proc/ide/ drive settings */
299 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
301 unsigned long sleep
; /* sleep until this time */
302 unsigned long service_start
; /* time we started last request */
303 unsigned long service_time
; /* service time of last request */
304 unsigned long timeout
; /* max time to wait for irq */
306 special_t special
; /* special action flags */
307 select_t select
; /* basic drive/head select reg value */
309 u8 keep_settings
; /* restore settings after drive reset */
310 u8 using_dma
; /* disk is using dma for read/write */
311 u8 retry_pio
; /* retrying dma capable host in pio */
312 u8 state
; /* retry state */
313 u8 waiting_for_dma
; /* dma currently in progress */
314 u8 unmask
; /* okay to unmask other irqs */
315 u8 noflush
; /* don't attempt flushes */
316 u8 dsc_overlap
; /* DSC overlap */
317 u8 nice1
; /* give potential excess bandwidth */
319 unsigned present
: 1; /* drive is physically present */
320 unsigned dead
: 1; /* device ejected hint */
321 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
322 unsigned noprobe
: 1; /* from: hdx=noprobe */
323 unsigned removable
: 1; /* 1 if need to do check_media_change */
324 unsigned attach
: 1; /* needed for removable devices */
325 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
326 unsigned no_unmask
: 1; /* disallow setting unmask bit */
327 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
328 unsigned atapi_overlap
: 1; /* ATAPI overlap (not supported) */
329 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
330 unsigned nodma
: 1; /* disallow DMA */
331 unsigned autotune
: 2; /* 0=default, 1=autotune, 2=noautotune */
332 unsigned remap_0_to_1
: 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
333 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
334 unsigned vdma
: 1; /* 1=doing PIO over DMA 0=doing normal DMA */
335 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
336 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
337 unsigned post_reset
: 1;
338 unsigned udma33_warned
: 1;
340 u8 addressing
; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
341 u8 quirk_list
; /* considered quirky, set for a specific host */
342 u8 init_speed
; /* transfer rate set at boot */
343 u8 current_speed
; /* current transfer rate set */
344 u8 desired_speed
; /* desired transfer rate set */
345 u8 dn
; /* now wide spread use */
346 u8 wcache
; /* status of write cache */
347 u8 acoustic
; /* acoustic management */
348 u8 media
; /* disk, cdrom, tape, floppy, ... */
349 u8 ctl
; /* "normal" value for Control register */
350 u8 ready_stat
; /* min status value for drive ready */
351 u8 mult_count
; /* current multiple sector setting */
352 u8 mult_req
; /* requested multiple sector setting */
353 u8 tune_req
; /* requested drive tuning setting */
354 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
355 u8 bad_wstat
; /* used for ignoring WRERR_STAT */
356 u8 nowerr
; /* used for ignoring WRERR_STAT */
357 u8 sect0
; /* offset of first sector for DM6:DDO */
358 u8 head
; /* "real" number of heads */
359 u8 sect
; /* "real" sectors per track */
360 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
361 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
363 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
364 unsigned int cyl
; /* "real" number of cyls */
365 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
366 unsigned int failures
; /* current failure count */
367 unsigned int max_failures
; /* maximum allowed failure count */
368 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
370 u64 capacity64
; /* total number of sectors */
372 int lun
; /* logical unit */
373 int crc_count
; /* crc counter to reduce drive speed */
374 #ifdef CONFIG_BLK_DEV_IDEACPI
375 struct ide_acpi_drive_link
*acpidata
;
377 struct list_head list
;
378 struct device gendev
;
379 struct completion gendev_rel_comp
; /* to deal with device release() */
382 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
384 #define IDE_CHIPSET_PCI_MASK \
385 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
386 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
388 struct ide_port_info
;
390 typedef struct hwif_s
{
391 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
392 struct hwif_s
*mate
; /* other hwif from same PCI chip */
393 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
394 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
396 char name
[6]; /* name of interface, eg. "ide0" */
398 /* task file registers for pata and sata */
399 unsigned long io_ports
[IDE_NR_PORTS
];
400 unsigned long sata_scr
[SATA_NR_PORTS
];
402 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
404 u8 major
; /* our major number */
405 u8 index
; /* 0 for ide0; 1 for ide1; ... */
406 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
407 u8 bus_state
; /* power state of the IDE bus */
417 u8 cbl
; /* cable type */
419 hwif_chipset_t chipset
; /* sub-module for tuning.. */
423 const struct ide_port_info
*cds
; /* chipset device struct */
425 ide_ack_intr_t
*ack_intr
;
427 void (*rw_disk
)(ide_drive_t
*, struct request
*);
430 ide_hwif_ops_t
*hwifops
;
432 /* host specific initialization of devices on a port */
433 void (*port_init_devs
)(struct hwif_s
*);
434 /* routine to program host for PIO mode */
435 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
436 /* routine to program host for DMA mode */
437 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
438 /* tweaks hardware to select drive */
439 void (*selectproc
)(ide_drive_t
*);
440 /* chipset polling based on hba specifics */
441 int (*reset_poll
)(ide_drive_t
*);
442 /* chipset specific changes to default for device-hba resets */
443 void (*pre_reset
)(ide_drive_t
*);
444 /* routine to reset controller after a disk reset */
445 void (*resetproc
)(ide_drive_t
*);
446 /* special host masking for drive selection */
447 void (*maskproc
)(ide_drive_t
*, int);
448 /* check host's drive quirk list */
449 void (*quirkproc
)(ide_drive_t
*);
451 u8 (*mdma_filter
)(ide_drive_t
*);
452 u8 (*udma_filter
)(ide_drive_t
*);
454 u8 (*cable_detect
)(struct hwif_s
*);
456 void (*ata_input_data
)(ide_drive_t
*, void *, u32
);
457 void (*ata_output_data
)(ide_drive_t
*, void *, u32
);
459 void (*atapi_input_bytes
)(ide_drive_t
*, void *, u32
);
460 void (*atapi_output_bytes
)(ide_drive_t
*, void *, u32
);
462 void (*dma_host_set
)(ide_drive_t
*, int);
463 int (*dma_setup
)(ide_drive_t
*);
464 void (*dma_exec_cmd
)(ide_drive_t
*, u8
);
465 void (*dma_start
)(ide_drive_t
*);
466 int (*ide_dma_end
)(ide_drive_t
*drive
);
467 int (*ide_dma_test_irq
)(ide_drive_t
*drive
);
468 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
469 void (*dma_lost_irq
)(ide_drive_t
*drive
);
470 void (*dma_timeout
)(ide_drive_t
*drive
);
472 void (*OUTB
)(u8 addr
, unsigned long port
);
473 void (*OUTBSYNC
)(ide_drive_t
*drive
, u8 addr
, unsigned long port
);
474 void (*OUTW
)(u16 addr
, unsigned long port
);
475 void (*OUTSW
)(unsigned long port
, void *addr
, u32 count
);
476 void (*OUTSL
)(unsigned long port
, void *addr
, u32 count
);
478 u8 (*INB
)(unsigned long port
);
479 u16 (*INW
)(unsigned long port
);
480 void (*INSW
)(unsigned long port
, void *addr
, u32 count
);
481 void (*INSL
)(unsigned long port
, void *addr
, u32 count
);
483 /* dma physical region descriptor table (cpu view) */
484 unsigned int *dmatable_cpu
;
485 /* dma physical region descriptor table (dma view) */
486 dma_addr_t dmatable_dma
;
487 /* Scatter-gather list used to build the above */
488 struct scatterlist
*sg_table
;
489 int sg_max_nents
; /* Maximum number of entries in it */
490 int sg_nents
; /* Current number of entries in it */
491 int sg_dma_direction
; /* dma transfer direction */
493 /* data phase of the active command (currently only valid for PIO/DMA) */
498 struct scatterlist
*cursg
;
499 unsigned int cursg_ofs
;
501 int rqsize
; /* max sectors per request */
502 int irq
; /* our irq number */
504 unsigned long dma_base
; /* base addr for dma ports */
505 unsigned long dma_command
; /* dma command register */
506 unsigned long dma_vendor1
; /* dma vendor 1 register */
507 unsigned long dma_status
; /* dma status register */
508 unsigned long dma_vendor3
; /* dma vendor 3 register */
509 unsigned long dma_prdtable
; /* actual prd table address */
511 unsigned long config_data
; /* for use by chipset-specific code */
512 unsigned long select_data
; /* for use by chipset-specific code */
514 unsigned long extra_base
; /* extra addr for dma ports */
515 unsigned extra_ports
; /* number of extra dma ports */
517 unsigned noprobe
: 1; /* don't probe for this interface */
518 unsigned present
: 1; /* this interface exists */
519 unsigned serialized
: 1; /* serialized all channel operation */
520 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
521 unsigned reset
: 1; /* reset after probe */
522 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
523 unsigned mmio
: 1; /* host uses MMIO */
524 unsigned straight8
: 1; /* Alan's straight 8 check */
526 struct device gendev
;
527 struct device
*portdev
;
529 struct completion gendev_rel_comp
; /* To deal with device release() */
531 void *hwif_data
; /* extra hwif data */
535 #ifdef CONFIG_BLK_DEV_IDEACPI
536 struct ide_acpi_hwif_link
*acpidata
;
538 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
541 * internal ide interrupt handler type
543 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
544 typedef int (ide_expiry_t
)(ide_drive_t
*);
546 /* used by ide-cd, ide-floppy, etc. */
547 typedef void (xfer_func_t
)(ide_drive_t
*, void *, u32
);
549 typedef struct hwgroup_s
{
550 /* irq handler, if active */
551 ide_startstop_t (*handler
)(ide_drive_t
*);
553 /* BOOL: protects all fields below */
555 /* BOOL: wake us up on timer expiry */
556 unsigned int sleeping
: 1;
557 /* BOOL: polling active & poll_timeout field valid */
558 unsigned int polling
: 1;
559 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
560 unsigned int resetting
: 1;
564 /* ptr to current hwif in linked-list */
567 /* current request */
571 struct timer_list timer
;
572 /* timeout value during long polls */
573 unsigned long poll_timeout
;
574 /* queried upon timeouts */
575 int (*expiry
)(ide_drive_t
*);
581 typedef struct ide_driver_s ide_driver_t
;
583 extern struct mutex ide_setting_mtx
;
585 int set_io_32bit(ide_drive_t
*, int);
586 int set_pio_mode(ide_drive_t
*, int);
587 int set_using_dma(ide_drive_t
*, int);
589 /* ATAPI packet command flags */
591 /* set when an error is considered normal - no retry (ide-tape) */
592 PC_FLAG_ABORT
= (1 << 0),
593 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
594 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
595 PC_FLAG_DMA_OK
= (1 << 3),
596 PC_FLAG_DMA_RECOMMENDED
= (1 << 4),
597 PC_FLAG_DMA_IN_PROGRESS
= (1 << 5),
598 PC_FLAG_DMA_ERROR
= (1 << 6),
599 PC_FLAG_WRITING
= (1 << 7),
600 /* command timed out */
601 PC_FLAG_TIMEDOUT
= (1 << 8),
604 struct ide_atapi_pc
{
605 /* actual packet bytes */
607 /* incremented on each retry */
611 /* bytes to transfer */
613 /* bytes actually transferred */
618 /* current buffer position */
621 /* missing/available data on the current buffer */
624 /* the corresponding request */
630 * those are more or less driver-specific and some of them are subject
631 * to change/removal later.
634 void (*idefloppy_callback
) (ide_drive_t
*);
635 ide_startstop_t (*idetape_callback
) (ide_drive_t
*);
638 struct idetape_bh
*bh
;
641 /* idescsi only for now */
642 struct scatterlist
*sg
;
645 struct scsi_cmnd
*scsi_cmd
;
646 void (*done
) (struct scsi_cmnd
*);
648 unsigned long timeout
;
651 #ifdef CONFIG_IDE_PROC_FS
653 * configurable drive settings
660 #define SETTING_READ (1 << 0)
661 #define SETTING_WRITE (1 << 1)
662 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
664 typedef int (ide_procset_t
)(ide_drive_t
*, int);
665 typedef struct ide_settings_s
{
676 struct ide_settings_s
*next
;
679 int ide_add_setting(ide_drive_t
*, const char *, int, int, int, int, int, int, void *, ide_procset_t
*set
);
682 * /proc/ide interface
687 read_proc_t
*read_proc
;
688 write_proc_t
*write_proc
;
691 void proc_ide_create(void);
692 void proc_ide_destroy(void);
693 void ide_proc_register_port(ide_hwif_t
*);
694 void ide_proc_port_register_devices(ide_hwif_t
*);
695 void ide_proc_unregister_device(ide_drive_t
*);
696 void ide_proc_unregister_port(ide_hwif_t
*);
697 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
698 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
700 void ide_add_generic_settings(ide_drive_t
*);
702 read_proc_t proc_ide_read_capacity
;
703 read_proc_t proc_ide_read_geometry
;
705 #ifdef CONFIG_BLK_DEV_IDEPCI
706 void ide_pci_create_host_proc(const char *, get_info_t
*);
710 * Standard exit stuff:
712 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
721 *start = page + off; \
725 static inline void proc_ide_create(void) { ; }
726 static inline void proc_ide_destroy(void) { ; }
727 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
728 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
729 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
730 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
731 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
732 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
733 static inline void ide_add_generic_settings(ide_drive_t
*drive
) { ; }
734 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
738 * Power Management step value (rq->pm->pm_step).
740 * The step value starts at 0 (ide_pm_state_start_suspend) for a
741 * suspend operation or 1000 (ide_pm_state_start_resume) for a
744 * For each step, the core calls the subdriver start_power_step() first.
746 * - ide_stopped : In this case, the core calls us back again unless
747 * step have been set to ide_power_state_completed.
748 * - ide_started : In this case, the channel is left busy until an
749 * async event (interrupt) occurs.
750 * Typically, start_power_step() will issue a taskfile request with
753 * Upon reception of the interrupt, the core will call complete_power_step()
754 * with the error code if any. This routine should update the step value
755 * and return. It should not start a new request. The core will call
756 * start_power_step for the new step value, unless step have been set to
757 * ide_power_state_completed.
759 * Subdrivers are expected to define their own additional power
760 * steps from 1..999 for suspend and from 1001..1999 for resume,
761 * other values are reserved for future use.
765 ide_pm_state_completed
= -1,
766 ide_pm_state_start_suspend
= 0,
767 ide_pm_state_start_resume
= 1000,
771 * Subdrivers support.
773 * The gendriver.owner field should be set to the module owner of this driver.
774 * The gendriver.name field should be set to the name of this driver
776 struct ide_driver_s
{
779 unsigned supports_dsc_overlap
: 1;
780 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
781 int (*end_request
)(ide_drive_t
*, int, int);
782 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
783 ide_startstop_t (*abort
)(ide_drive_t
*, struct request
*rq
);
784 struct device_driver gen_driver
;
785 int (*probe
)(ide_drive_t
*);
786 void (*remove
)(ide_drive_t
*);
787 void (*resume
)(ide_drive_t
*);
788 void (*shutdown
)(ide_drive_t
*);
789 #ifdef CONFIG_IDE_PROC_FS
790 ide_proc_entry_t
*proc
;
794 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
796 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*, unsigned, unsigned long);
799 * ide_hwifs[] is the master data structure used to keep track
800 * of just about everything in ide.c. Whenever possible, routines
801 * should be using pointers to a drive (ide_drive_t *) or
802 * pointers to a hwif (ide_hwif_t *), rather than indexing this
803 * structure directly (the allocation/layout may change!).
807 extern ide_hwif_t ide_hwifs
[]; /* master data repository */
809 extern int noautodma
;
811 ide_hwif_t
*ide_find_port_slot(const struct ide_port_info
*);
813 static inline ide_hwif_t
*ide_find_port(void)
815 return ide_find_port_slot(NULL
);
818 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
819 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
820 int uptodate
, int nr_sectors
);
822 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
824 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
827 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
829 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
831 ide_startstop_t
__ide_abort(ide_drive_t
*, struct request
*);
833 extern ide_startstop_t
ide_abort(ide_drive_t
*, const char *);
835 extern void ide_fix_driveid(struct hd_driveid
*);
837 extern void ide_fixstring(u8
*, const int, const int);
839 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
841 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
843 extern void ide_init_drive_cmd (struct request
*rq
);
846 * "action" parameter type for ide_do_drive_cmd() below.
849 ide_wait
, /* insert rq at end of list, and wait for it */
850 ide_preempt
, /* insert rq in front of current request */
851 ide_head_wait
, /* insert rq in front of current request and wait for it */
852 ide_end
/* insert rq at end of list, but don't wait for it */
855 extern int ide_do_drive_cmd(ide_drive_t
*, struct request
*, ide_action_t
);
857 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
860 IDE_TFLAG_LBA48
= (1 << 0),
861 IDE_TFLAG_NO_SELECT_MASK
= (1 << 1),
862 IDE_TFLAG_FLAGGED
= (1 << 2),
863 IDE_TFLAG_OUT_DATA
= (1 << 3),
864 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
865 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
866 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
867 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
868 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
869 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
870 IDE_TFLAG_OUT_HOB_NSECT
|
871 IDE_TFLAG_OUT_HOB_LBAL
|
872 IDE_TFLAG_OUT_HOB_LBAM
|
873 IDE_TFLAG_OUT_HOB_LBAH
,
874 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
875 IDE_TFLAG_OUT_NSECT
= (1 << 10),
876 IDE_TFLAG_OUT_LBAL
= (1 << 11),
877 IDE_TFLAG_OUT_LBAM
= (1 << 12),
878 IDE_TFLAG_OUT_LBAH
= (1 << 13),
879 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
880 IDE_TFLAG_OUT_NSECT
|
884 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
885 IDE_TFLAG_WRITE
= (1 << 15),
886 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
887 IDE_TFLAG_IN_DATA
= (1 << 17),
888 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
889 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
890 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
891 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
892 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
893 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
894 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
895 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
896 IDE_TFLAG_IN_HOB_LBAM
|
897 IDE_TFLAG_IN_HOB_LBAH
,
898 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
899 IDE_TFLAG_IN_HOB_NSECT
|
900 IDE_TFLAG_IN_HOB_LBA
,
901 IDE_TFLAG_IN_NSECT
= (1 << 25),
902 IDE_TFLAG_IN_LBAL
= (1 << 26),
903 IDE_TFLAG_IN_LBAM
= (1 << 27),
904 IDE_TFLAG_IN_LBAH
= (1 << 28),
905 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
908 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
910 IDE_TFLAG_IN_DEVICE
= (1 << 29),
911 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
913 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
915 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
917 /* force 16-bit I/O operations */
918 IDE_TFLAG_IO_16BIT
= (1 << 30),
919 /* ide_task_t was allocated using kmalloc() */
920 IDE_TFLAG_DYN
= (1 << 31),
923 struct ide_taskfile
{
924 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
926 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
932 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
935 u8 error
; /* read: error */
936 u8 feature
; /* write: feature */
939 u8 nsect
; /* 8: number of sectors */
940 u8 lbal
; /* 9: LBA low */
941 u8 lbam
; /* 10: LBA mid */
942 u8 lbah
; /* 11: LBA high */
944 u8 device
; /* 12: device select */
947 u8 status
; /*  read: status  */
948 u8 command
; /* write: command */
952 typedef struct ide_task_s
{
954 struct ide_taskfile tf
;
959 struct request
*rq
; /* copy of request */
960 void *special
; /* valid_t generally */
963 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
964 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
966 extern void SELECT_DRIVE(ide_drive_t
*);
967 extern void SELECT_MASK(ide_drive_t
*, int);
969 extern int drive_is_ready(ide_drive_t
*);
971 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
973 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
975 void task_end_request(ide_drive_t
*, struct request
*, u8
);
977 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
978 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
980 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
981 int ide_cmd_ioctl(ide_drive_t
*, unsigned int, unsigned long);
982 int ide_task_ioctl(ide_drive_t
*, unsigned int, unsigned long);
984 extern int system_bus_clock(void);
986 extern int ide_driveid_update(ide_drive_t
*);
987 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
988 extern u8
eighty_ninty_three (ide_drive_t
*);
989 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
991 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
993 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
995 extern int ide_spin_wait_hwgroup(ide_drive_t
*);
996 extern void ide_timer_expiry(unsigned long);
997 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
998 extern void do_ide_request(struct request_queue
*);
1000 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1002 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1003 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1004 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1006 #define ide_pci_register_driver(d) pci_register_driver(d)
1009 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int, u8
*);
1010 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1012 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1013 void ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1015 static inline void ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1016 const struct ide_port_info
*d
) { }
1019 extern void default_hwif_iops(ide_hwif_t
*);
1020 extern void default_hwif_mmiops(ide_hwif_t
*);
1021 extern void default_hwif_transport(ide_hwif_t
*);
1023 typedef struct ide_pci_enablebit_s
{
1024 u8 reg
; /* byte pci reg holding the enable-bit */
1025 u8 mask
; /* mask to isolate the enable-bit */
1026 u8 val
; /* value of masked reg when "enabled" */
1027 } ide_pci_enablebit_t
;
1030 /* Uses ISA control ports not PCI ones. */
1031 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1032 /* single port device */
1033 IDE_HFLAG_SINGLE
= (1 << 1),
1034 /* don't use legacy PIO blacklist */
1035 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1036 /* use PIO8/9 for prefetch off/on */
1037 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1038 /* use PIO6/7 for fast-devsel off/on */
1039 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1040 /* use 100-102 and 200-202 PIO values to set DMA modes */
1041 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1043 * keep DMA setting when programming PIO mode, may be used only
1044 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1046 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1047 /* program host for the transfer mode after programming device */
1048 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1049 /* don't program host/device for the transfer mode ("smart" hosts) */
1050 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1051 /* trust BIOS for programming chipset/device for DMA */
1052 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1053 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
1054 IDE_HFLAG_VDMA
= (1 << 11),
1055 /* ATAPI DMA is unsupported */
1056 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1057 /* set if host is a "non-bootable" controller */
1058 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1059 /* host doesn't support DMA */
1060 IDE_HFLAG_NO_DMA
= (1 << 14),
1061 /* check if host is PCI IDE device before allowing DMA */
1062 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1063 /* don't autotune PIO */
1064 IDE_HFLAG_NO_AUTOTUNE
= (1 << 16),
1065 /* host is CS5510/CS5520 */
1066 IDE_HFLAG_CS5520
= IDE_HFLAG_VDMA
,
1068 IDE_HFLAG_NO_LBA48
= (1 << 17),
1070 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1071 /* data FIFO is cleared by an error */
1072 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1073 /* serialize ports */
1074 IDE_HFLAG_SERIALIZE
= (1 << 20),
1075 /* use legacy IRQs */
1076 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1077 /* force use of legacy IRQs */
1078 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1079 /* limit LBA48 requests to 256 sectors */
1080 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1081 /* use 32-bit I/O ops */
1082 IDE_HFLAG_IO_32BIT
= (1 << 24),
1084 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1085 IDE_HFLAG_ABUSE_SET_DMA_MODE
= (1 << 26),
1086 /* host is CY82C693 */
1087 IDE_HFLAG_CY82C693
= (1 << 27),
1088 /* force host out of "simplex" mode */
1089 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1090 /* DSC overlap is unsupported */
1091 IDE_HFLAG_NO_DSC
= (1 << 29),
1092 /* never use 32-bit I/O ops */
1093 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1094 /* never unmask IRQs */
1095 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1098 #ifdef CONFIG_BLK_DEV_OFFBOARD
1099 # define IDE_HFLAG_OFF_BOARD 0
1101 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1104 struct ide_port_info
{
1106 unsigned int (*init_chipset
)(struct pci_dev
*, const char *);
1107 void (*init_iops
)(ide_hwif_t
*);
1108 void (*init_hwif
)(ide_hwif_t
*);
1109 void (*init_dma
)(ide_hwif_t
*, unsigned long);
1110 ide_pci_enablebit_t enablebits
[2];
1111 hwif_chipset_t chipset
;
1120 int ide_setup_pci_device(struct pci_dev
*, const struct ide_port_info
*);
1121 int ide_setup_pci_devices(struct pci_dev
*, struct pci_dev
*, const struct ide_port_info
*);
1123 void ide_map_sg(ide_drive_t
*, struct request
*);
1124 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1126 #define BAD_DMA_DRIVE 0
1127 #define GOOD_DMA_DRIVE 1
1129 struct drive_list_entry
{
1130 const char *id_model
;
1131 const char *id_firmware
;
1134 int ide_in_drive_list(struct hd_driveid
*, const struct drive_list_entry
*);
1136 #ifdef CONFIG_BLK_DEV_IDEDMA
1137 int __ide_dma_bad_drive(ide_drive_t
*);
1138 int ide_id_dma_bug(ide_drive_t
*);
1140 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1142 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1144 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1147 void ide_dma_off_quietly(ide_drive_t
*);
1148 void ide_dma_off(ide_drive_t
*);
1149 void ide_dma_on(ide_drive_t
*);
1150 int ide_set_dma(ide_drive_t
*);
1151 void ide_check_dma_crc(ide_drive_t
*);
1152 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1154 int ide_build_sglist(ide_drive_t
*, struct request
*);
1155 void ide_destroy_dmatable(ide_drive_t
*);
1157 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1158 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1159 extern int ide_release_dma(ide_hwif_t
*);
1160 extern void ide_setup_dma(ide_hwif_t
*, unsigned long);
1162 void ide_dma_host_set(ide_drive_t
*, int);
1163 extern int ide_dma_setup(ide_drive_t
*);
1164 extern void ide_dma_start(ide_drive_t
*);
1165 extern int __ide_dma_end(ide_drive_t
*);
1166 extern void ide_dma_lost_irq(ide_drive_t
*);
1167 extern void ide_dma_timeout(ide_drive_t
*);
1168 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1171 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1172 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1173 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1174 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1175 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1176 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1177 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1178 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1179 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1180 #endif /* CONFIG_BLK_DEV_IDEDMA */
1182 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1183 static inline void ide_release_dma(ide_hwif_t
*drive
) {;}
1186 #ifdef CONFIG_BLK_DEV_IDEACPI
1187 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1188 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1189 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1190 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1191 void ide_acpi_port_init_devices(ide_hwif_t
*);
1192 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1194 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1195 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1196 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1197 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1198 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1199 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1202 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1203 extern int ide_hwif_request_regions(ide_hwif_t
*hwif
);
1204 extern void ide_hwif_release_regions(ide_hwif_t
* hwif
);
1205 void ide_unregister(unsigned int);
1207 void ide_register_region(struct gendisk
*);
1208 void ide_unregister_region(struct gendisk
*);
1210 void ide_undecoded_slave(ide_drive_t
*);
1212 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*);
1213 int ide_device_add(u8 idx
[4], const struct ide_port_info
*);
1214 void ide_port_unregister_devices(ide_hwif_t
*);
1215 void ide_port_scan(ide_hwif_t
*);
1217 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1219 return hwif
->hwif_data
;
1222 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1224 hwif
->hwif_data
= data
;
1227 const char *ide_xfer_verbose(u8 mode
);
1228 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1229 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1231 static inline int ide_dev_has_iordy(struct hd_driveid
*id
)
1233 return ((id
->field_valid
& 2) && (id
->capability
& 8)) ? 1 : 0;
1236 static inline int ide_dev_is_sata(struct hd_driveid
*id
)
1239 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1240 * verifying that word 80 by casting it to a signed type --
1241 * this trick allows us to filter out the reserved values of
1242 * 0x0000 and 0xffff along with the earlier ATA revisions...
1244 if (id
->hw_config
== 0 && (short)id
->major_rev_num
>= 0x0020)
1249 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1250 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1252 typedef struct ide_pio_timings_s
{
1253 int setup_time
; /* Address setup (ns) minimum */
1254 int active_time
; /* Active pulse (ns) minimum */
1255 int cycle_time
; /* Cycle time (ns) minimum = */
1256 /* active + recovery (+ setup for some chips) */
1257 } ide_pio_timings_t
;
1259 unsigned int ide_pio_cycle_time(ide_drive_t
*, u8
);
1260 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1261 extern const ide_pio_timings_t ide_pio_timings
[6];
1263 int ide_set_pio_mode(ide_drive_t
*, u8
);
1264 int ide_set_dma_mode(ide_drive_t
*, u8
);
1266 void ide_set_pio(ide_drive_t
*, u8
);
1268 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1270 ide_set_pio(drive
, 255);
1273 extern spinlock_t ide_lock
;
1274 extern struct mutex ide_cfg_mtx
;
1276 * Structure locking:
1278 * ide_cfg_mtx and ide_lock together protect changes to
1279 * ide_hwif_t->{next,hwgroup}
1282 * ide_hwgroup_t->busy: ide_lock
1283 * ide_hwgroup_t->hwif: ide_lock
1284 * ide_hwif_t->mate: constant, no locking
1285 * ide_drive_t->hwif: constant, no locking
1288 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1290 extern struct bus_type ide_bus_type
;
1291 extern struct class *ide_port_class
;
1293 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1294 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1296 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1297 #define ide_id_has_flush_cache_ext(id) \
1298 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1300 static inline void ide_dump_identify(u8
*id
)
1302 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1305 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1307 struct pci_dev
*dev
= to_pci_dev(hwif
->dev
);
1308 return hwif
->dev
? pcibus_to_node(dev
->bus
) : -1;
1311 static inline ide_drive_t
*ide_get_paired_drive(ide_drive_t
*drive
)
1313 ide_hwif_t
*hwif
= HWIF(drive
);
1315 return &hwif
->drives
[(drive
->dn
^ 1) & 1];
1318 static inline void ide_set_irq(ide_drive_t
*drive
, int on
)
1320 ide_hwif_t
*hwif
= drive
->hwif
;
1322 hwif
->OUTB(drive
->ctl
| (on
? 0 : 2),
1323 hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1326 static inline u8
ide_read_status(ide_drive_t
*drive
)
1328 ide_hwif_t
*hwif
= drive
->hwif
;
1330 return hwif
->INB(hwif
->io_ports
[IDE_STATUS_OFFSET
]);
1333 static inline u8
ide_read_altstatus(ide_drive_t
*drive
)
1335 ide_hwif_t
*hwif
= drive
->hwif
;
1337 return hwif
->INB(hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1340 static inline u8
ide_read_error(ide_drive_t
*drive
)
1342 ide_hwif_t
*hwif
= drive
->hwif
;
1344 return hwif
->INB(hwif
->io_ports
[IDE_ERROR_OFFSET
]);
1348 * Too bad. The drive wants to send us data which we are not ready to accept.
1349 * Just throw it away.
1351 static inline void ide_atapi_discard_data(ide_drive_t
*drive
, unsigned bcount
)
1353 ide_hwif_t
*hwif
= drive
->hwif
;
1355 /* FIXME: use ->atapi_input_bytes */
1357 (void)hwif
->INB(hwif
->io_ports
[IDE_DATA_OFFSET
]);
1360 static inline void ide_atapi_write_zeros(ide_drive_t
*drive
, unsigned bcount
)
1362 ide_hwif_t
*hwif
= drive
->hwif
;
1364 /* FIXME: use ->atapi_output_bytes */
1366 hwif
->OUTB(0, hwif
->io_ports
[IDE_DATA_OFFSET
]);