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 struct hwif_s
* ide_find_port(unsigned long);
174 void ide_init_port_data(struct hwif_s
*, unsigned int);
175 void ide_init_port_hw(struct hwif_s
*, hw_regs_t
*);
177 static inline void ide_std_init_ports(hw_regs_t
*hw
,
178 unsigned long io_addr
,
179 unsigned long ctl_addr
)
183 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
184 hw
->io_ports
[i
] = io_addr
++;
186 hw
->io_ports
[IDE_CONTROL_OFFSET
] = ctl_addr
;
191 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
193 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
196 /* Currently only m68k, apus and m8xx need it */
197 #ifndef IDE_ARCH_ACK_INTR
198 # define ide_ack_intr(hwif) (1)
201 /* Currently only Atari needs it */
202 #ifndef IDE_ARCH_LOCK
203 # define ide_release_lock() do {} while (0)
204 # define ide_get_lock(hdlr, data) do {} while (0)
205 #endif /* IDE_ARCH_LOCK */
208 * Now for the data we need to maintain per-drive: ide_drive_t
211 #define ide_scsi 0x21
212 #define ide_disk 0x20
213 #define ide_optical 0x7
214 #define ide_cdrom 0x5
216 #define ide_floppy 0x0
219 * Special Driver Flags
221 * set_geometry : respecify drive geometry
222 * recalibrate : seek to cyl 0
223 * set_multmode : set multmode count
224 * set_tune : tune interface for drive
225 * serviced : service command
231 unsigned set_geometry
: 1;
232 unsigned recalibrate
: 1;
233 unsigned set_multmode
: 1;
234 unsigned set_tune
: 1;
235 unsigned serviced
: 1;
236 unsigned reserved
: 3;
241 * ATA-IDE Select Register, aka Device-Head
243 * head : always zeros here
244 * unit : drive select number: 0/1
246 * lba : using LBA instead of CHS
252 #if defined(__LITTLE_ENDIAN_BITFIELD)
258 #elif defined(__BIG_ENDIAN_BITFIELD)
265 #error "Please fix <asm/byteorder.h>"
268 } select_t
, ata_select_t
;
271 * Status returned from various ide_ functions
274 ide_stopped
, /* no drive operation was started */
275 ide_started
, /* a drive operation was started, handler was set */
279 struct ide_settings_s
;
281 #ifdef CONFIG_BLK_DEV_IDEACPI
282 struct ide_acpi_drive_link
;
283 struct ide_acpi_hwif_link
;
286 typedef struct ide_drive_s
{
287 char name
[4]; /* drive name, such as "hda" */
288 char driver_req
[10]; /* requests specific driver */
290 struct request_queue
*queue
; /* request queue */
292 struct request
*rq
; /* current request */
293 struct ide_drive_s
*next
; /* circular list of hwgroup drives */
294 void *driver_data
; /* extra driver data */
295 struct hd_driveid
*id
; /* drive model identification info */
296 #ifdef CONFIG_IDE_PROC_FS
297 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
298 struct ide_settings_s
*settings
;/* /proc/ide/ drive settings */
300 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
302 unsigned long sleep
; /* sleep until this time */
303 unsigned long service_start
; /* time we started last request */
304 unsigned long service_time
; /* service time of last request */
305 unsigned long timeout
; /* max time to wait for irq */
307 special_t special
; /* special action flags */
308 select_t select
; /* basic drive/head select reg value */
310 u8 keep_settings
; /* restore settings after drive reset */
311 u8 using_dma
; /* disk is using dma for read/write */
312 u8 retry_pio
; /* retrying dma capable host in pio */
313 u8 state
; /* retry state */
314 u8 waiting_for_dma
; /* dma currently in progress */
315 u8 unmask
; /* okay to unmask other irqs */
316 u8 noflush
; /* don't attempt flushes */
317 u8 dsc_overlap
; /* DSC overlap */
318 u8 nice1
; /* give potential excess bandwidth */
320 unsigned present
: 1; /* drive is physically present */
321 unsigned dead
: 1; /* device ejected hint */
322 unsigned id_read
: 1; /* 1=id read from disk 0 = synthetic */
323 unsigned noprobe
: 1; /* from: hdx=noprobe */
324 unsigned removable
: 1; /* 1 if need to do check_media_change */
325 unsigned attach
: 1; /* needed for removable devices */
326 unsigned forced_geom
: 1; /* 1 if hdx=c,h,s was given at boot */
327 unsigned no_unmask
: 1; /* disallow setting unmask bit */
328 unsigned no_io_32bit
: 1; /* disallow enabling 32bit I/O */
329 unsigned atapi_overlap
: 1; /* ATAPI overlap (not supported) */
330 unsigned doorlocking
: 1; /* for removable only: door lock/unlock works */
331 unsigned nodma
: 1; /* disallow DMA */
332 unsigned autotune
: 2; /* 0=default, 1=autotune, 2=noautotune */
333 unsigned remap_0_to_1
: 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
334 unsigned blocked
: 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
335 unsigned vdma
: 1; /* 1=doing PIO over DMA 0=doing normal DMA */
336 unsigned scsi
: 1; /* 0=default, 1=ide-scsi emulation */
337 unsigned sleeping
: 1; /* 1=sleeping & sleep field valid */
338 unsigned post_reset
: 1;
339 unsigned udma33_warned
: 1;
341 u8 addressing
; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
342 u8 quirk_list
; /* considered quirky, set for a specific host */
343 u8 init_speed
; /* transfer rate set at boot */
344 u8 current_speed
; /* current transfer rate set */
345 u8 desired_speed
; /* desired transfer rate set */
346 u8 dn
; /* now wide spread use */
347 u8 wcache
; /* status of write cache */
348 u8 acoustic
; /* acoustic management */
349 u8 media
; /* disk, cdrom, tape, floppy, ... */
350 u8 ctl
; /* "normal" value for Control register */
351 u8 ready_stat
; /* min status value for drive ready */
352 u8 mult_count
; /* current multiple sector setting */
353 u8 mult_req
; /* requested multiple sector setting */
354 u8 tune_req
; /* requested drive tuning setting */
355 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
356 u8 bad_wstat
; /* used for ignoring WRERR_STAT */
357 u8 nowerr
; /* used for ignoring WRERR_STAT */
358 u8 sect0
; /* offset of first sector for DM6:DDO */
359 u8 head
; /* "real" number of heads */
360 u8 sect
; /* "real" sectors per track */
361 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
362 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
364 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
365 unsigned int cyl
; /* "real" number of cyls */
366 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
367 unsigned int failures
; /* current failure count */
368 unsigned int max_failures
; /* maximum allowed failure count */
369 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
371 u64 capacity64
; /* total number of sectors */
373 int lun
; /* logical unit */
374 int crc_count
; /* crc counter to reduce drive speed */
375 #ifdef CONFIG_BLK_DEV_IDEACPI
376 struct ide_acpi_drive_link
*acpidata
;
378 struct list_head list
;
379 struct device gendev
;
380 struct completion gendev_rel_comp
; /* to deal with device release() */
383 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
385 #define IDE_CHIPSET_PCI_MASK \
386 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
387 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
389 struct ide_port_info
;
391 typedef struct hwif_s
{
392 struct hwif_s
*next
; /* for linked-list in ide_hwgroup_t */
393 struct hwif_s
*mate
; /* other hwif from same PCI chip */
394 struct hwgroup_s
*hwgroup
; /* actually (ide_hwgroup_t *) */
395 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
397 char name
[6]; /* name of interface, eg. "ide0" */
399 /* task file registers for pata and sata */
400 unsigned long io_ports
[IDE_NR_PORTS
];
401 unsigned long sata_scr
[SATA_NR_PORTS
];
403 ide_drive_t drives
[MAX_DRIVES
]; /* drive info */
405 u8 major
; /* our major number */
406 u8 index
; /* 0 for ide0; 1 for ide1; ... */
407 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
408 u8 bus_state
; /* power state of the IDE bus */
418 u8 cbl
; /* cable type */
420 hwif_chipset_t chipset
; /* sub-module for tuning.. */
424 const struct ide_port_info
*cds
; /* chipset device struct */
426 ide_ack_intr_t
*ack_intr
;
428 void (*rw_disk
)(ide_drive_t
*, struct request
*);
431 ide_hwif_ops_t
*hwifops
;
433 /* host specific initialization of devices on a port */
434 void (*port_init_devs
)(struct hwif_s
*);
435 /* routine to program host for PIO mode */
436 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
437 /* routine to program host for DMA mode */
438 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
439 /* tweaks hardware to select drive */
440 void (*selectproc
)(ide_drive_t
*);
441 /* chipset polling based on hba specifics */
442 int (*reset_poll
)(ide_drive_t
*);
443 /* chipset specific changes to default for device-hba resets */
444 void (*pre_reset
)(ide_drive_t
*);
445 /* routine to reset controller after a disk reset */
446 void (*resetproc
)(ide_drive_t
*);
447 /* special host masking for drive selection */
448 void (*maskproc
)(ide_drive_t
*, int);
449 /* check host's drive quirk list */
450 void (*quirkproc
)(ide_drive_t
*);
452 u8 (*mdma_filter
)(ide_drive_t
*);
453 u8 (*udma_filter
)(ide_drive_t
*);
455 u8 (*cable_detect
)(struct hwif_s
*);
457 void (*ata_input_data
)(ide_drive_t
*, void *, u32
);
458 void (*ata_output_data
)(ide_drive_t
*, void *, u32
);
460 void (*atapi_input_bytes
)(ide_drive_t
*, void *, u32
);
461 void (*atapi_output_bytes
)(ide_drive_t
*, void *, u32
);
463 void (*dma_host_set
)(ide_drive_t
*, int);
464 int (*dma_setup
)(ide_drive_t
*);
465 void (*dma_exec_cmd
)(ide_drive_t
*, u8
);
466 void (*dma_start
)(ide_drive_t
*);
467 int (*ide_dma_end
)(ide_drive_t
*drive
);
468 int (*ide_dma_test_irq
)(ide_drive_t
*drive
);
469 void (*ide_dma_clear_irq
)(ide_drive_t
*drive
);
470 void (*dma_lost_irq
)(ide_drive_t
*drive
);
471 void (*dma_timeout
)(ide_drive_t
*drive
);
473 void (*OUTB
)(u8 addr
, unsigned long port
);
474 void (*OUTBSYNC
)(ide_drive_t
*drive
, u8 addr
, unsigned long port
);
475 void (*OUTW
)(u16 addr
, unsigned long port
);
476 void (*OUTSW
)(unsigned long port
, void *addr
, u32 count
);
477 void (*OUTSL
)(unsigned long port
, void *addr
, u32 count
);
479 u8 (*INB
)(unsigned long port
);
480 u16 (*INW
)(unsigned long port
);
481 void (*INSW
)(unsigned long port
, void *addr
, u32 count
);
482 void (*INSL
)(unsigned long port
, void *addr
, u32 count
);
484 /* dma physical region descriptor table (cpu view) */
485 unsigned int *dmatable_cpu
;
486 /* dma physical region descriptor table (dma view) */
487 dma_addr_t dmatable_dma
;
488 /* Scatter-gather list used to build the above */
489 struct scatterlist
*sg_table
;
490 int sg_max_nents
; /* Maximum number of entries in it */
491 int sg_nents
; /* Current number of entries in it */
492 int sg_dma_direction
; /* dma transfer direction */
494 /* data phase of the active command (currently only valid for PIO/DMA) */
499 struct scatterlist
*cursg
;
500 unsigned int cursg_ofs
;
502 int rqsize
; /* max sectors per request */
503 int irq
; /* our irq number */
505 unsigned long dma_base
; /* base addr for dma ports */
506 unsigned long dma_command
; /* dma command register */
507 unsigned long dma_vendor1
; /* dma vendor 1 register */
508 unsigned long dma_status
; /* dma status register */
509 unsigned long dma_vendor3
; /* dma vendor 3 register */
510 unsigned long dma_prdtable
; /* actual prd table address */
512 unsigned long config_data
; /* for use by chipset-specific code */
513 unsigned long select_data
; /* for use by chipset-specific code */
515 unsigned long extra_base
; /* extra addr for dma ports */
516 unsigned extra_ports
; /* number of extra dma ports */
518 unsigned noprobe
: 1; /* don't probe for this interface */
519 unsigned present
: 1; /* this interface exists */
520 unsigned serialized
: 1; /* serialized all channel operation */
521 unsigned sharing_irq
: 1; /* 1 = sharing irq with another hwif */
522 unsigned reset
: 1; /* reset after probe */
523 unsigned sg_mapped
: 1; /* sg_table and sg_nents are ready */
524 unsigned mmio
: 1; /* host uses MMIO */
525 unsigned straight8
: 1; /* Alan's straight 8 check */
527 struct device gendev
;
528 struct device
*portdev
;
530 struct completion gendev_rel_comp
; /* To deal with device release() */
532 void *hwif_data
; /* extra hwif data */
536 #ifdef CONFIG_BLK_DEV_IDEACPI
537 struct ide_acpi_hwif_link
*acpidata
;
539 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
542 * internal ide interrupt handler type
544 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
545 typedef int (ide_expiry_t
)(ide_drive_t
*);
547 /* used by ide-cd, ide-floppy, etc. */
548 typedef void (xfer_func_t
)(ide_drive_t
*, void *, u32
);
550 typedef struct hwgroup_s
{
551 /* irq handler, if active */
552 ide_startstop_t (*handler
)(ide_drive_t
*);
554 /* BOOL: protects all fields below */
556 /* BOOL: wake us up on timer expiry */
557 unsigned int sleeping
: 1;
558 /* BOOL: polling active & poll_timeout field valid */
559 unsigned int polling
: 1;
560 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
561 unsigned int resetting
: 1;
565 /* ptr to current hwif in linked-list */
568 /* current request */
572 struct timer_list timer
;
573 /* timeout value during long polls */
574 unsigned long poll_timeout
;
575 /* queried upon timeouts */
576 int (*expiry
)(ide_drive_t
*);
582 typedef struct ide_driver_s ide_driver_t
;
584 extern struct mutex ide_setting_mtx
;
586 int set_io_32bit(ide_drive_t
*, int);
587 int set_pio_mode(ide_drive_t
*, int);
588 int set_using_dma(ide_drive_t
*, int);
590 /* ATAPI packet command flags */
592 /* set when an error is considered normal - no retry (ide-tape) */
593 PC_FLAG_ABORT
= (1 << 0),
594 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
595 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
596 PC_FLAG_DMA_OK
= (1 << 3),
597 PC_FLAG_DMA_RECOMMENDED
= (1 << 4),
598 PC_FLAG_DMA_IN_PROGRESS
= (1 << 5),
599 PC_FLAG_DMA_ERROR
= (1 << 6),
600 PC_FLAG_WRITING
= (1 << 7),
601 /* command timed out */
602 PC_FLAG_TIMEDOUT
= (1 << 8),
605 struct ide_atapi_pc
{
606 /* actual packet bytes */
608 /* incremented on each retry */
612 /* bytes to transfer */
614 /* bytes actually transferred */
619 /* current buffer position */
622 /* missing/available data on the current buffer */
625 /* the corresponding request */
631 * those are more or less driver-specific and some of them are subject
632 * to change/removal later.
635 void (*idefloppy_callback
) (ide_drive_t
*);
636 ide_startstop_t (*idetape_callback
) (ide_drive_t
*);
639 struct idetape_bh
*bh
;
642 /* idescsi only for now */
643 struct scatterlist
*sg
;
646 struct scsi_cmnd
*scsi_cmd
;
647 void (*done
) (struct scsi_cmnd
*);
649 unsigned long timeout
;
652 #ifdef CONFIG_IDE_PROC_FS
654 * configurable drive settings
661 #define SETTING_READ (1 << 0)
662 #define SETTING_WRITE (1 << 1)
663 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
665 typedef int (ide_procset_t
)(ide_drive_t
*, int);
666 typedef struct ide_settings_s
{
677 struct ide_settings_s
*next
;
680 int ide_add_setting(ide_drive_t
*, const char *, int, int, int, int, int, int, void *, ide_procset_t
*set
);
683 * /proc/ide interface
688 read_proc_t
*read_proc
;
689 write_proc_t
*write_proc
;
692 void proc_ide_create(void);
693 void proc_ide_destroy(void);
694 void ide_proc_register_port(ide_hwif_t
*);
695 void ide_proc_port_register_devices(ide_hwif_t
*);
696 void ide_proc_unregister_device(ide_drive_t
*);
697 void ide_proc_unregister_port(ide_hwif_t
*);
698 void ide_proc_register_driver(ide_drive_t
*, ide_driver_t
*);
699 void ide_proc_unregister_driver(ide_drive_t
*, ide_driver_t
*);
701 void ide_add_generic_settings(ide_drive_t
*);
703 read_proc_t proc_ide_read_capacity
;
704 read_proc_t proc_ide_read_geometry
;
706 #ifdef CONFIG_BLK_DEV_IDEPCI
707 void ide_pci_create_host_proc(const char *, get_info_t
*);
711 * Standard exit stuff:
713 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
722 *start = page + off; \
726 static inline void proc_ide_create(void) { ; }
727 static inline void proc_ide_destroy(void) { ; }
728 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
729 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
730 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
731 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
732 static inline void ide_proc_register_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
733 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
, ide_driver_t
*driver
) { ; }
734 static inline void ide_add_generic_settings(ide_drive_t
*drive
) { ; }
735 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
739 * Power Management step value (rq->pm->pm_step).
741 * The step value starts at 0 (ide_pm_state_start_suspend) for a
742 * suspend operation or 1000 (ide_pm_state_start_resume) for a
745 * For each step, the core calls the subdriver start_power_step() first.
747 * - ide_stopped : In this case, the core calls us back again unless
748 * step have been set to ide_power_state_completed.
749 * - ide_started : In this case, the channel is left busy until an
750 * async event (interrupt) occurs.
751 * Typically, start_power_step() will issue a taskfile request with
754 * Upon reception of the interrupt, the core will call complete_power_step()
755 * with the error code if any. This routine should update the step value
756 * and return. It should not start a new request. The core will call
757 * start_power_step for the new step value, unless step have been set to
758 * ide_power_state_completed.
760 * Subdrivers are expected to define their own additional power
761 * steps from 1..999 for suspend and from 1001..1999 for resume,
762 * other values are reserved for future use.
766 ide_pm_state_completed
= -1,
767 ide_pm_state_start_suspend
= 0,
768 ide_pm_state_start_resume
= 1000,
772 * Subdrivers support.
774 * The gendriver.owner field should be set to the module owner of this driver.
775 * The gendriver.name field should be set to the name of this driver
777 struct ide_driver_s
{
780 unsigned supports_dsc_overlap
: 1;
781 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
782 int (*end_request
)(ide_drive_t
*, int, int);
783 ide_startstop_t (*error
)(ide_drive_t
*, struct request
*rq
, u8
, u8
);
784 ide_startstop_t (*abort
)(ide_drive_t
*, struct request
*rq
);
785 struct device_driver gen_driver
;
786 int (*probe
)(ide_drive_t
*);
787 void (*remove
)(ide_drive_t
*);
788 void (*resume
)(ide_drive_t
*);
789 void (*shutdown
)(ide_drive_t
*);
790 #ifdef CONFIG_IDE_PROC_FS
791 ide_proc_entry_t
*proc
;
795 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
797 int generic_ide_ioctl(ide_drive_t
*, struct file
*, struct block_device
*, unsigned, unsigned long);
800 * ide_hwifs[] is the master data structure used to keep track
801 * of just about everything in ide.c. Whenever possible, routines
802 * should be using pointers to a drive (ide_drive_t *) or
803 * pointers to a hwif (ide_hwif_t *), rather than indexing this
804 * structure directly (the allocation/layout may change!).
808 extern ide_hwif_t ide_hwifs
[]; /* master data repository */
810 extern int noautodma
;
812 extern int ide_end_request (ide_drive_t
*drive
, int uptodate
, int nrsecs
);
813 int ide_end_dequeued_request(ide_drive_t
*drive
, struct request
*rq
,
814 int uptodate
, int nr_sectors
);
816 extern void ide_set_handler (ide_drive_t
*drive
, ide_handler_t
*handler
, unsigned int timeout
, ide_expiry_t
*expiry
);
818 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
821 ide_startstop_t
__ide_error(ide_drive_t
*, struct request
*, u8
, u8
);
823 ide_startstop_t
ide_error (ide_drive_t
*drive
, const char *msg
, byte stat
);
825 ide_startstop_t
__ide_abort(ide_drive_t
*, struct request
*);
827 extern ide_startstop_t
ide_abort(ide_drive_t
*, const char *);
829 extern void ide_fix_driveid(struct hd_driveid
*);
831 extern void ide_fixstring(u8
*, const int, const int);
833 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
835 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
837 extern void ide_init_drive_cmd (struct request
*rq
);
840 * "action" parameter type for ide_do_drive_cmd() below.
843 ide_wait
, /* insert rq at end of list, and wait for it */
844 ide_preempt
, /* insert rq in front of current request */
845 ide_head_wait
, /* insert rq in front of current request and wait for it */
846 ide_end
/* insert rq at end of list, but don't wait for it */
849 extern int ide_do_drive_cmd(ide_drive_t
*, struct request
*, ide_action_t
);
851 extern void ide_end_drive_cmd(ide_drive_t
*, u8
, u8
);
854 IDE_TFLAG_LBA48
= (1 << 0),
855 IDE_TFLAG_NO_SELECT_MASK
= (1 << 1),
856 IDE_TFLAG_FLAGGED
= (1 << 2),
857 IDE_TFLAG_OUT_DATA
= (1 << 3),
858 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 4),
859 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 5),
860 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 6),
861 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 7),
862 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 8),
863 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
864 IDE_TFLAG_OUT_HOB_NSECT
|
865 IDE_TFLAG_OUT_HOB_LBAL
|
866 IDE_TFLAG_OUT_HOB_LBAM
|
867 IDE_TFLAG_OUT_HOB_LBAH
,
868 IDE_TFLAG_OUT_FEATURE
= (1 << 9),
869 IDE_TFLAG_OUT_NSECT
= (1 << 10),
870 IDE_TFLAG_OUT_LBAL
= (1 << 11),
871 IDE_TFLAG_OUT_LBAM
= (1 << 12),
872 IDE_TFLAG_OUT_LBAH
= (1 << 13),
873 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
874 IDE_TFLAG_OUT_NSECT
|
878 IDE_TFLAG_OUT_DEVICE
= (1 << 14),
879 IDE_TFLAG_WRITE
= (1 << 15),
880 IDE_TFLAG_FLAGGED_SET_IN_FLAGS
= (1 << 16),
881 IDE_TFLAG_IN_DATA
= (1 << 17),
882 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 18),
883 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 19),
884 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 20),
885 IDE_TFLAG_IN_HOB_NSECT
= (1 << 21),
886 IDE_TFLAG_IN_HOB_LBAL
= (1 << 22),
887 IDE_TFLAG_IN_HOB_LBAM
= (1 << 23),
888 IDE_TFLAG_IN_HOB_LBAH
= (1 << 24),
889 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
890 IDE_TFLAG_IN_HOB_LBAM
|
891 IDE_TFLAG_IN_HOB_LBAH
,
892 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
893 IDE_TFLAG_IN_HOB_NSECT
|
894 IDE_TFLAG_IN_HOB_LBA
,
895 IDE_TFLAG_IN_NSECT
= (1 << 25),
896 IDE_TFLAG_IN_LBAL
= (1 << 26),
897 IDE_TFLAG_IN_LBAM
= (1 << 27),
898 IDE_TFLAG_IN_LBAH
= (1 << 28),
899 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
902 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
904 IDE_TFLAG_IN_DEVICE
= (1 << 29),
905 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
907 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
909 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
911 /* force 16-bit I/O operations */
912 IDE_TFLAG_IO_16BIT
= (1 << 30),
913 /* ide_task_t was allocated using kmalloc() */
914 IDE_TFLAG_DYN
= (1 << 31),
917 struct ide_taskfile
{
918 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
920 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
926 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
929 u8 error
; /* read: error */
930 u8 feature
; /* write: feature */
933 u8 nsect
; /* 8: number of sectors */
934 u8 lbal
; /* 9: LBA low */
935 u8 lbam
; /* 10: LBA mid */
936 u8 lbah
; /* 11: LBA high */
938 u8 device
; /* 12: device select */
941 u8 status
; /*  read: status  */
942 u8 command
; /* write: command */
946 typedef struct ide_task_s
{
948 struct ide_taskfile tf
;
953 struct request
*rq
; /* copy of request */
954 void *special
; /* valid_t generally */
957 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
958 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
960 extern void SELECT_DRIVE(ide_drive_t
*);
961 extern void SELECT_MASK(ide_drive_t
*, int);
963 extern int drive_is_ready(ide_drive_t
*);
965 void ide_pktcmd_tf_load(ide_drive_t
*, u32
, u16
, u8
);
967 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
969 void task_end_request(ide_drive_t
*, struct request
*, u8
);
971 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
972 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
974 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
975 int ide_cmd_ioctl(ide_drive_t
*, unsigned int, unsigned long);
976 int ide_task_ioctl(ide_drive_t
*, unsigned int, unsigned long);
978 extern int system_bus_clock(void);
980 extern int ide_driveid_update(ide_drive_t
*);
981 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
982 extern u8
eighty_ninty_three (ide_drive_t
*);
983 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
985 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
987 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
989 extern int ide_spin_wait_hwgroup(ide_drive_t
*);
990 extern void ide_timer_expiry(unsigned long);
991 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
992 extern void do_ide_request(struct request_queue
*);
994 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
996 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
997 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
998 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1000 #define ide_pci_register_driver(d) pci_register_driver(d)
1003 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*, int, u8
*);
1004 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1006 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1007 void ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1009 static inline void ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1010 const struct ide_port_info
*d
) { }
1013 extern void default_hwif_iops(ide_hwif_t
*);
1014 extern void default_hwif_mmiops(ide_hwif_t
*);
1015 extern void default_hwif_transport(ide_hwif_t
*);
1017 typedef struct ide_pci_enablebit_s
{
1018 u8 reg
; /* byte pci reg holding the enable-bit */
1019 u8 mask
; /* mask to isolate the enable-bit */
1020 u8 val
; /* value of masked reg when "enabled" */
1021 } ide_pci_enablebit_t
;
1024 /* Uses ISA control ports not PCI ones. */
1025 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1026 /* single port device */
1027 IDE_HFLAG_SINGLE
= (1 << 1),
1028 /* don't use legacy PIO blacklist */
1029 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1030 /* don't use conservative PIO "downgrade" */
1031 IDE_HFLAG_PIO_NO_DOWNGRADE
= (1 << 3),
1032 /* use PIO8/9 for prefetch off/on */
1033 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1034 /* use PIO6/7 for fast-devsel off/on */
1035 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1036 /* use 100-102 and 200-202 PIO values to set DMA modes */
1037 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1039 * keep DMA setting when programming PIO mode, may be used only
1040 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1042 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1043 /* program host for the transfer mode after programming device */
1044 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1045 /* don't program host/device for the transfer mode ("smart" hosts) */
1046 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1047 /* trust BIOS for programming chipset/device for DMA */
1048 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1049 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
1050 IDE_HFLAG_VDMA
= (1 << 11),
1051 /* ATAPI DMA is unsupported */
1052 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1053 /* set if host is a "bootable" controller */
1054 IDE_HFLAG_BOOTABLE
= (1 << 13),
1055 /* host doesn't support DMA */
1056 IDE_HFLAG_NO_DMA
= (1 << 14),
1057 /* check if host is PCI IDE device before allowing DMA */
1058 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1059 /* don't autotune PIO */
1060 IDE_HFLAG_NO_AUTOTUNE
= (1 << 16),
1061 /* host is CS5510/CS5520 */
1062 IDE_HFLAG_CS5520
= IDE_HFLAG_VDMA
,
1064 IDE_HFLAG_NO_LBA48
= (1 << 17),
1066 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1067 /* data FIFO is cleared by an error */
1068 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1069 /* serialize ports */
1070 IDE_HFLAG_SERIALIZE
= (1 << 20),
1071 /* use legacy IRQs */
1072 IDE_HFLAG_LEGACY_IRQS
= (1 << 21),
1073 /* force use of legacy IRQs */
1074 IDE_HFLAG_FORCE_LEGACY_IRQS
= (1 << 22),
1075 /* limit LBA48 requests to 256 sectors */
1076 IDE_HFLAG_RQSIZE_256
= (1 << 23),
1077 /* use 32-bit I/O ops */
1078 IDE_HFLAG_IO_32BIT
= (1 << 24),
1080 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1081 IDE_HFLAG_ABUSE_SET_DMA_MODE
= (1 << 26),
1082 /* host is CY82C693 */
1083 IDE_HFLAG_CY82C693
= (1 << 27),
1084 /* force host out of "simplex" mode */
1085 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1086 /* DSC overlap is unsupported */
1087 IDE_HFLAG_NO_DSC
= (1 << 29),
1088 /* never use 32-bit I/O ops */
1089 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1090 /* never unmask IRQs */
1091 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1094 #ifdef CONFIG_BLK_DEV_OFFBOARD
1095 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1097 # define IDE_HFLAG_OFF_BOARD 0
1100 struct ide_port_info
{
1102 unsigned int (*init_chipset
)(struct pci_dev
*, const char *);
1103 void (*init_iops
)(ide_hwif_t
*);
1104 void (*init_hwif
)(ide_hwif_t
*);
1105 void (*init_dma
)(ide_hwif_t
*, unsigned long);
1106 ide_pci_enablebit_t enablebits
[2];
1107 hwif_chipset_t chipset
;
1116 int ide_setup_pci_device(struct pci_dev
*, const struct ide_port_info
*);
1117 int ide_setup_pci_devices(struct pci_dev
*, struct pci_dev
*, const struct ide_port_info
*);
1119 void ide_map_sg(ide_drive_t
*, struct request
*);
1120 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1122 #define BAD_DMA_DRIVE 0
1123 #define GOOD_DMA_DRIVE 1
1125 struct drive_list_entry
{
1126 const char *id_model
;
1127 const char *id_firmware
;
1130 int ide_in_drive_list(struct hd_driveid
*, const struct drive_list_entry
*);
1132 #ifdef CONFIG_BLK_DEV_IDEDMA
1133 int __ide_dma_bad_drive(ide_drive_t
*);
1134 int ide_id_dma_bug(ide_drive_t
*);
1136 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1138 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1140 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1143 void ide_dma_off_quietly(ide_drive_t
*);
1144 void ide_dma_off(ide_drive_t
*);
1145 void ide_dma_on(ide_drive_t
*);
1146 int ide_set_dma(ide_drive_t
*);
1147 void ide_check_dma_crc(ide_drive_t
*);
1148 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1150 int ide_build_sglist(ide_drive_t
*, struct request
*);
1151 void ide_destroy_dmatable(ide_drive_t
*);
1153 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1154 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1155 extern int ide_release_dma(ide_hwif_t
*);
1156 extern void ide_setup_dma(ide_hwif_t
*, unsigned long);
1158 void ide_dma_host_set(ide_drive_t
*, int);
1159 extern int ide_dma_setup(ide_drive_t
*);
1160 extern void ide_dma_start(ide_drive_t
*);
1161 extern int __ide_dma_end(ide_drive_t
*);
1162 extern void ide_dma_lost_irq(ide_drive_t
*);
1163 extern void ide_dma_timeout(ide_drive_t
*);
1164 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1167 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1168 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1169 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1170 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1171 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1172 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1173 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1174 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1175 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1176 #endif /* CONFIG_BLK_DEV_IDEDMA */
1178 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1179 static inline void ide_release_dma(ide_hwif_t
*drive
) {;}
1182 #ifdef CONFIG_BLK_DEV_IDEACPI
1183 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1184 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1185 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1186 extern void ide_acpi_init(ide_hwif_t
*hwif
);
1187 void ide_acpi_port_init_devices(ide_hwif_t
*);
1188 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1190 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1191 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1192 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1193 static inline void ide_acpi_init(ide_hwif_t
*hwif
) { ; }
1194 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1195 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1198 void ide_remove_port_from_hwgroup(ide_hwif_t
*);
1199 extern int ide_hwif_request_regions(ide_hwif_t
*hwif
);
1200 extern void ide_hwif_release_regions(ide_hwif_t
* hwif
);
1201 void ide_unregister(unsigned int);
1203 void ide_register_region(struct gendisk
*);
1204 void ide_unregister_region(struct gendisk
*);
1206 void ide_undecoded_slave(ide_drive_t
*);
1208 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*);
1209 int ide_device_add(u8 idx
[4], const struct ide_port_info
*);
1210 void ide_port_unregister_devices(ide_hwif_t
*);
1211 void ide_port_scan(ide_hwif_t
*);
1213 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1215 return hwif
->hwif_data
;
1218 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1220 hwif
->hwif_data
= data
;
1223 const char *ide_xfer_verbose(u8 mode
);
1224 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1225 extern int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
);
1227 static inline int ide_dev_has_iordy(struct hd_driveid
*id
)
1229 return ((id
->field_valid
& 2) && (id
->capability
& 8)) ? 1 : 0;
1232 static inline int ide_dev_is_sata(struct hd_driveid
*id
)
1235 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1236 * verifying that word 80 by casting it to a signed type --
1237 * this trick allows us to filter out the reserved values of
1238 * 0x0000 and 0xffff along with the earlier ATA revisions...
1240 if (id
->hw_config
== 0 && (short)id
->major_rev_num
>= 0x0020)
1245 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1246 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1248 typedef struct ide_pio_timings_s
{
1249 int setup_time
; /* Address setup (ns) minimum */
1250 int active_time
; /* Active pulse (ns) minimum */
1251 int cycle_time
; /* Cycle time (ns) minimum = */
1252 /* active + recovery (+ setup for some chips) */
1253 } ide_pio_timings_t
;
1255 unsigned int ide_pio_cycle_time(ide_drive_t
*, u8
);
1256 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1257 extern const ide_pio_timings_t ide_pio_timings
[6];
1259 int ide_set_pio_mode(ide_drive_t
*, u8
);
1260 int ide_set_dma_mode(ide_drive_t
*, u8
);
1262 void ide_set_pio(ide_drive_t
*, u8
);
1264 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1266 ide_set_pio(drive
, 255);
1269 extern spinlock_t ide_lock
;
1270 extern struct mutex ide_cfg_mtx
;
1272 * Structure locking:
1274 * ide_cfg_mtx and ide_lock together protect changes to
1275 * ide_hwif_t->{next,hwgroup}
1278 * ide_hwgroup_t->busy: ide_lock
1279 * ide_hwgroup_t->hwif: ide_lock
1280 * ide_hwif_t->mate: constant, no locking
1281 * ide_drive_t->hwif: constant, no locking
1284 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1286 extern struct bus_type ide_bus_type
;
1287 extern struct class *ide_port_class
;
1289 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1290 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1292 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1293 #define ide_id_has_flush_cache_ext(id) \
1294 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1296 static inline void ide_dump_identify(u8
*id
)
1298 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1301 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1303 struct pci_dev
*dev
= to_pci_dev(hwif
->dev
);
1304 return hwif
->dev
? pcibus_to_node(dev
->bus
) : -1;
1307 static inline ide_drive_t
*ide_get_paired_drive(ide_drive_t
*drive
)
1309 ide_hwif_t
*hwif
= HWIF(drive
);
1311 return &hwif
->drives
[(drive
->dn
^ 1) & 1];
1314 static inline void ide_set_irq(ide_drive_t
*drive
, int on
)
1316 ide_hwif_t
*hwif
= drive
->hwif
;
1318 hwif
->OUTB(drive
->ctl
| (on
? 0 : 2),
1319 hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1322 static inline u8
ide_read_status(ide_drive_t
*drive
)
1324 ide_hwif_t
*hwif
= drive
->hwif
;
1326 return hwif
->INB(hwif
->io_ports
[IDE_STATUS_OFFSET
]);
1329 static inline u8
ide_read_altstatus(ide_drive_t
*drive
)
1331 ide_hwif_t
*hwif
= drive
->hwif
;
1333 return hwif
->INB(hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1336 static inline u8
ide_read_error(ide_drive_t
*drive
)
1338 ide_hwif_t
*hwif
= drive
->hwif
;
1340 return hwif
->INB(hwif
->io_ports
[IDE_ERROR_OFFSET
]);
1344 * Too bad. The drive wants to send us data which we are not ready to accept.
1345 * Just throw it away.
1347 static inline void ide_atapi_discard_data(ide_drive_t
*drive
, unsigned bcount
)
1349 ide_hwif_t
*hwif
= drive
->hwif
;
1351 /* FIXME: use ->atapi_input_bytes */
1353 (void)hwif
->INB(hwif
->io_ports
[IDE_DATA_OFFSET
]);
1356 static inline void ide_atapi_write_zeros(ide_drive_t
*drive
, unsigned bcount
)
1358 ide_hwif_t
*hwif
= drive
->hwif
;
1360 /* FIXME: use ->atapi_output_bytes */
1362 hwif
->OUTB(0, hwif
->io_ports
[IDE_DATA_OFFSET
]);