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ide: make ide_pc_intr() static
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / include / linux / ide.h
CommitLineData
1da177e4
LT		 1#ifndef _IDE_H
2#define _IDE_H
3/*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
1da177e4
LT		 9#include <linux/init.h>
10#include <linux/ioport.h>
3ceca727 11#include <linux/ata.h>
1da177e4
LT		 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>
f36d4024 19#include <linux/completion.h>
feb22b7f 20#include <linux/pm.h>
e3a59b4d
HR		 21#ifdef CONFIG_BLK_DEV_IDEACPI
22#include <acpi/acpi.h>
23#endif
1da177e4
LT		 24#include <asm/byteorder.h>
25#include <asm/system.h>
26#include <asm/io.h>
f9383c42 27#include <asm/mutex.h>
1da177e4 28
729d4de9 29#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
4ee06b7e
BZ		 30# define SUPPORT_VLB_SYNC 0
31#else
32# define SUPPORT_VLB_SYNC 1
1da177e4
LT		 33#endif
34
35/*
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
37 * number.
38 */
39
40#define IDE_NO_IRQ (-1)
41
1da177e4
LT		 42typedef unsigned char byte; /* used everywhere */
43
44/*
45 * Probably not wise to fiddle with these
46 */
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 */
50
1da177e4
LT		 51/*
52 * state flags
53 */
54
55#define DMA_PIO_RETRY 1 /* retrying in PIO */
56
57#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
58#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
59
60/*
61 * Definitions for accessing IDE controller registers
62 */
63#define IDE_NR_PORTS (10)
64
4c3032d8
BZ		 65struct ide_io_ports {
66 unsigned long data_addr;
67
68 union {
69 unsigned long error_addr; /* read: error */
70 unsigned long feature_addr; /* write: feature */
71 };
72
73 unsigned long nsect_addr;
74 unsigned long lbal_addr;
75 unsigned long lbam_addr;
76 unsigned long lbah_addr;
77
78 unsigned long device_addr;
79
80 union {
81 unsigned long status_addr; /*  read: status  */
82 unsigned long command_addr; /* write: command */
83 };
84
85 unsigned long ctl_addr;
86
87 unsigned long irq_addr;
88};
1da177e4
LT		 89
90#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
1da177e4 91
3a7d2484
BZ		 92#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
93#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
94#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
95#define DRIVE_READY (ATA_DRDY | ATA_DSC)
96
97#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
1da177e4
LT		 98
99#define SATA_NR_PORTS (3) /* 16 possible ?? */
100
101#define SATA_STATUS_OFFSET (0)
1da177e4 102#define SATA_ERROR_OFFSET (1)
1da177e4 103#define SATA_CONTROL_OFFSET (2)
1da177e4 104
1da177e4
LT		 105/*
106 * Our Physical Region Descriptor (PRD) table should be large enough
107 * to handle the biggest I/O request we are likely to see. Since requests
108 * can have no more than 256 sectors, and since the typical blocksize is
109 * two or more sectors, we could get by with a limit of 128 entries here for
110 * the usual worst case. Most requests seem to include some contiguous blocks,
111 * further reducing the number of table entries required.
112 *
113 * The driver reverts to PIO mode for individual requests that exceed
114 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
115 * 100% of all crazy scenarios here is not necessary.
116 *
117 * As it turns out though, we must allocate a full 4KB page for this,
118 * so the two PRD tables (ide0 & ide1) will each get half of that,
119 * allowing each to have about 256 entries (8 bytes each) from this.
120 */
121#define PRD_BYTES 8
122#define PRD_ENTRIES 256
123
124/*
125 * Some more useful definitions
126 */
127#define PARTN_BITS 6 /* number of minor dev bits for partitions */
128#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
129#define SECTOR_SIZE 512
151a6701 130
1da177e4
LT		 131#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
132
133/*
134 * Timeouts for various operations:
135 */
d6e2955a
BZ		 136enum {
137 /* spec allows up to 20ms */
138 WAIT_DRQ = HZ / 10, /* 100ms */
139 /* some laptops are very slow */
140 WAIT_READY = 5 * HZ, /* 5s */
141 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
142 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
143 /* worst case when spinning up */
144 WAIT_WORSTCASE = 30 * HZ, /* 30s */
145 /* maximum wait for an IRQ to happen */
146 WAIT_CMD = 10 * HZ, /* 10s */
147 /* Some drives require a longer IRQ timeout. */
148 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
149 /*
150 * Some drives (for example, Seagate STT3401A Travan) require a very
151 * long timeout, because they don't return an interrupt or clear their
152 * BSY bit until after the command completes (even retension commands).
153 */
154 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
155 /* minimum sleep time */
156 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
157};
1da177e4 158
79e36a9f
EO		 159/*
160 * Op codes for special requests to be handled by ide_special_rq().
161 * Values should be in the range of 0x20 to 0x3f.
162 */
163#define REQ_DRIVE_RESET 0x20
92f1f8fd 164#define REQ_DEVSET_EXEC 0x21
79e36a9f 165
1da177e4
LT		 166/*
167 * Check for an interrupt and acknowledge the interrupt status
168 */
169struct hwif_s;
170typedef int (ide_ack_intr_t)(struct hwif_s *);
171
1da177e4
LT		 172/*
173 * hwif_chipset_t is used to keep track of the specific hardware
174 * chipset used by each IDE interface, if known.
175 */
528a572d 176enum { ide_unknown, ide_generic, ide_pci,
1da177e4
LT		 177 ide_cmd640, ide_dtc2278, ide_ali14xx,
178 ide_qd65xx, ide_umc8672, ide_ht6560b,
179 ide_rz1000, ide_trm290,
180 ide_cmd646, ide_cy82c693, ide_4drives,
b7691646 181 ide_pmac, ide_acorn,
9a0e77f2 182 ide_au1xxx, ide_palm3710
528a572d
BZ		 183};
184
185typedef u8 hwif_chipset_t;
1da177e4
LT		 186
187/*
188 * Structure to hold all information about the location of this port
189 */
190typedef struct hw_regs_s {
4c3032d8
BZ		 191 union {
192 struct ide_io_ports io_ports;
193 unsigned long io_ports_array[IDE_NR_PORTS];
194 };
195
1da177e4 196 int irq; /* our irq number */
1da177e4
LT		 197 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
198 hwif_chipset_t chipset;
c56c5648 199 struct device *dev, *parent;
d6276b5f 200 unsigned long config;
1da177e4
LT		 201} hw_regs_t;
202
cbb010c1 203void ide_init_port_data(struct hwif_s *, unsigned int);
57c802e8 204void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
baa8f3e9 205
1da177e4
LT		 206static inline void ide_std_init_ports(hw_regs_t *hw,
207 unsigned long io_addr,
208 unsigned long ctl_addr)
209{
210 unsigned int i;
211
4c3032d8
BZ		 212 for (i = 0; i <= 7; i++)
213 hw->io_ports_array[i] = io_addr++;
1da177e4 214
4c3032d8 215 hw->io_ports.ctl_addr = ctl_addr;
1da177e4
LT		 216}
217
a861beb1
BZ		 218/* for IDE PCI controllers in legacy mode, temporary */
219static inline int __ide_default_irq(unsigned long base)
220{
221 switch (base) {
222#ifdef CONFIG_IA64
223 case 0x1f0: return isa_irq_to_vector(14);
224 case 0x170: return isa_irq_to_vector(15);
225#else
226 case 0x1f0: return 14;
227 case 0x170: return 15;
228#endif
229 }
230 return 0;
231}
232
2a8f7450
BZ		 233#if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
234 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
235 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
1da177e4 236#include <asm/ide.h>
2a8f7450
BZ		 237#else
238#include <asm-generic/ide_iops.h>
239#endif
1da177e4 240
c5bfc375 241#define MAX_HWIFS 10
83ae20c8 242
1da177e4
LT		 243/* Currently only m68k, apus and m8xx need it */
244#ifndef IDE_ARCH_ACK_INTR
245# define ide_ack_intr(hwif) (1)
246#endif
247
248/* Currently only Atari needs it */
249#ifndef IDE_ARCH_LOCK
250# define ide_release_lock() do {} while (0)
251# define ide_get_lock(hdlr, data) do {} while (0)
252#endif /* IDE_ARCH_LOCK */
253
254/*
255 * Now for the data we need to maintain per-drive: ide_drive_t
256 */
257
258#define ide_scsi 0x21
259#define ide_disk 0x20
260#define ide_optical 0x7
261#define ide_cdrom 0x5
262#define ide_tape 0x1
263#define ide_floppy 0x0
264
265/*
266 * Special Driver Flags
267 *
268 * set_geometry : respecify drive geometry
269 * recalibrate : seek to cyl 0
270 * set_multmode : set multmode count
271 * set_tune : tune interface for drive
272 * serviced : service command
273 * reserved : unused
274 */
275typedef union {
276 unsigned all : 8;
277 struct {
1da177e4
LT		 278 unsigned set_geometry : 1;
279 unsigned recalibrate : 1;
280 unsigned set_multmode : 1;
281 unsigned set_tune : 1;
282 unsigned serviced : 1;
283 unsigned reserved : 3;
1da177e4
LT		 284 } b;
285} special_t;
286
1da177e4
LT		 287/*
288 * ATA-IDE Select Register, aka Device-Head
289 *
290 * head : always zeros here
291 * unit : drive select number: 0/1
292 * bit5 : always 1
293 * lba : using LBA instead of CHS
294 * bit7 : always 1
295 */
296typedef union {
297 unsigned all : 8;
298 struct {
299#if defined(__LITTLE_ENDIAN_BITFIELD)
300 unsigned head : 4;
301 unsigned unit : 1;
302 unsigned bit5 : 1;
303 unsigned lba : 1;
304 unsigned bit7 : 1;
305#elif defined(__BIG_ENDIAN_BITFIELD)
306 unsigned bit7 : 1;
307 unsigned lba : 1;
308 unsigned bit5 : 1;
309 unsigned unit : 1;
310 unsigned head : 4;
311#else
312#error "Please fix <asm/byteorder.h>"
313#endif
314 } b;
315} select_t, ata_select_t;
316
1da177e4
LT		 317/*
318 * Status returned from various ide_ functions
319 */
320typedef enum {
321 ide_stopped, /* no drive operation was started */
322 ide_started, /* a drive operation was started, handler was set */
323} ide_startstop_t;
324
67c56364
BZ		 325/* ATAPI packet command flags */
326enum {
327 /* set when an error is considered normal - no retry (ide-tape) */
328 PC_FLAG_ABORT = (1 << 0),
329 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
330 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
331 PC_FLAG_DMA_OK = (1 << 3),
332 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
333 PC_FLAG_DMA_ERROR = (1 << 5),
334 PC_FLAG_WRITING = (1 << 6),
335 /* command timed out */
336 PC_FLAG_TIMEDOUT = (1 << 7),
337};
338
339/*
340 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
341 * This is used for several packet commands (not for READ/WRITE commands).
342 */
343#define IDE_PC_BUFFER_SIZE 256
344
345struct ide_atapi_pc {
346 /* actual packet bytes */
347 u8 c[12];
348 /* incremented on each retry */
349 int retries;
350 int error;
351
352 /* bytes to transfer */
353 int req_xfer;
354 /* bytes actually transferred */
355 int xferred;
356
357 /* data buffer */
358 u8 *buf;
359 /* current buffer position */
360 u8 *cur_pos;
361 int buf_size;
362 /* missing/available data on the current buffer */
363 int b_count;
364
365 /* the corresponding request */
366 struct request *rq;
367
368 unsigned long flags;
369
370 /*
371 * those are more or less driver-specific and some of them are subject
372 * to change/removal later.
373 */
374 u8 pc_buf[IDE_PC_BUFFER_SIZE];
375
376 /* idetape only */
377 struct idetape_bh *bh;
378 char *b_data;
379
380 /* idescsi only for now */
381 struct scatterlist *sg;
382 unsigned int sg_cnt;
383
384 struct scsi_cmnd *scsi_cmd;
385 void (*done) (struct scsi_cmnd *);
386
387 unsigned long timeout;
388};
389
8185d5aa 390struct ide_devset;
1da177e4 391struct ide_driver_s;
1da177e4 392
e3a59b4d
HR		 393#ifdef CONFIG_BLK_DEV_IDEACPI
394struct ide_acpi_drive_link;
395struct ide_acpi_hwif_link;
396#endif
397
3b8ac539
BP		 398/* ATAPI device flags */
399enum {
400 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
401 IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
3b8ac539
BP		 402 /* Drive cannot lock the door. */
403 IDE_AFLAG_NO_DOORLOCK = (1 << 2),
0578042d
BZ		 404
405 /* ide-cd */
3b8ac539
BP		 406 /* Drive cannot eject the disc. */
407 IDE_AFLAG_NO_EJECT = (1 << 3),
408 /* Drive is a pre ATAPI 1.2 drive. */
409 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
410 /* TOC addresses are in BCD. */
411 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
412 /* TOC track numbers are in BCD. */
413 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
414 /*
415 * Drive does not provide data in multiples of SECTOR_SIZE
416 * when more than one interrupt is needed.
417 */
418 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
419 /* Seeking in progress. */
420 IDE_AFLAG_SEEKING = (1 << 8),
421 /* Saved TOC information is current. */
422 IDE_AFLAG_TOC_VALID = (1 << 9),
423 /* We think that the drive door is locked. */
424 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
425 /* SET_CD_SPEED command is unsupported. */
426 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
427 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
428 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
429 IDE_AFLAG_SANYO_3CD = (1 << 14),
430 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
431 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
432 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
433
434 /* ide-floppy */
435 /* Format in progress */
436 IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
437 /* Avoid commands not supported in Clik drive */
438 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
439 /* Requires BH algorithm for packets */
440 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
49cac39e
BZ		 441 /* Write protect */
442 IDE_AFLAG_WP = (1 << 21),
443 /* Supports format progress report */
444 IDE_AFLAG_SRFP = (1 << 22),
3b8ac539
BP		 445
446 /* ide-tape */
49cac39e 447 IDE_AFLAG_IGNORE_DSC = (1 << 23),
3b8ac539 448 /* 0 When the tape position is unknown */
49cac39e 449 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
3b8ac539 450 /* Device already opened */
49cac39e 451 IDE_AFLAG_BUSY = (1 << 25),
3b8ac539 452 /* Attempt to auto-detect the current user block size */
49cac39e 453 IDE_AFLAG_DETECT_BS = (1 << 26),
3b8ac539 454 /* Currently on a filemark */
49cac39e 455 IDE_AFLAG_FILEMARK = (1 << 27),
3b8ac539 456 /* 0 = no tape is loaded, so we don't rewind after ejecting */
49cac39e 457 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
f20f2586 458
49cac39e 459 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
3b8ac539
BP		 460};
461
d7c26ebb 462struct ide_drive_s {
1da177e4
LT		 463 char name[4]; /* drive name, such as "hda" */
464 char driver_req[10]; /* requests specific driver */
465
165125e1 466 struct request_queue *queue; /* request queue */
1da177e4
LT		 467
468 struct request *rq; /* current request */
469 struct ide_drive_s *next; /* circular list of hwgroup drives */
1da177e4 470 void *driver_data; /* extra driver data */
48fb2688 471 u16 *id; /* identification info */
7662d046 472#ifdef CONFIG_IDE_PROC_FS
1da177e4 473 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
92f1f8fd 474 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
7662d046 475#endif
1da177e4
LT		 476 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
477
478 unsigned long sleep; /* sleep until this time */
479 unsigned long service_start; /* time we started last request */
480 unsigned long service_time; /* service time of last request */
481 unsigned long timeout; /* max time to wait for irq */
482
483 special_t special; /* special action flags */
484 select_t select; /* basic drive/head select reg value */
485
1da177e4
LT		 486 u8 retry_pio; /* retrying dma capable host in pio */
487 u8 state; /* retry state */
488 u8 waiting_for_dma; /* dma currently in progress */
1da177e4 489
8185d5aa
BZ		 490 unsigned keep_settings : 1; /* restore settings after drive reset */
491 unsigned using_dma : 1; /* disk is using dma for read/write */
492 unsigned unmask : 1; /* okay to unmask other irqs */
493 unsigned noflush : 1; /* don't attempt flushes */
494 unsigned dsc_overlap : 1; /* DSC overlap */
495 unsigned nice1 : 1; /* give potential excess bandwidth */
1da177e4
LT		 496 unsigned present : 1; /* drive is physically present */
497 unsigned dead : 1; /* device ejected hint */
498 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
499 unsigned noprobe : 1; /* from: hdx=noprobe */
500 unsigned removable : 1; /* 1 if need to do check_media_change */
501 unsigned attach : 1; /* needed for removable devices */
1da177e4
LT		 502 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
503 unsigned no_unmask : 1; /* disallow setting unmask bit */
504 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
1da177e4 505 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
c223701c 506 unsigned nodma : 1; /* disallow DMA */
1da177e4 507 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
1da177e4
LT		 508 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
509 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
510 unsigned post_reset : 1;
7f8f48af 511 unsigned udma33_warned : 1;
8185d5aa
BZ		 512 unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
513 unsigned wcache : 1; /* status of write cache */
514 unsigned nowerr : 1; /* used for ignoring ATA_DF */
1da177e4
LT		 515
516 u8 quirk_list; /* considered quirky, set for a specific host */
517 u8 init_speed; /* transfer rate set at boot */
1da177e4 518 u8 current_speed; /* current transfer rate set */
513daadd 519 u8 desired_speed; /* desired transfer rate set */
1da177e4 520 u8 dn; /* now wide spread use */
1da177e4
LT		 521 u8 acoustic; /* acoustic management */
522 u8 media; /* disk, cdrom, tape, floppy, ... */
1da177e4
LT		 523 u8 ready_stat; /* min status value for drive ready */
524 u8 mult_count; /* current multiple sector setting */
525 u8 mult_req; /* requested multiple sector setting */
526 u8 tune_req; /* requested drive tuning setting */
527 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
3a7d2484 528 u8 bad_wstat; /* used for ignoring ATA_DF */
1da177e4
LT		 529 u8 head; /* "real" number of heads */
530 u8 sect; /* "real" sectors per track */
531 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
532 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
533
534 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
535 unsigned int cyl; /* "real" number of cyls */
26bcb879 536 unsigned int drive_data; /* used by set_pio_mode/selectproc */
1da177e4
LT		 537 unsigned int failures; /* current failure count */
538 unsigned int max_failures; /* maximum allowed failure count */
dbe217af 539 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
1da177e4
LT		 540
541 u64 capacity64; /* total number of sectors */
542
543 int lun; /* logical unit */
544 int crc_count; /* crc counter to reduce drive speed */
e3a59b4d
HR		 545#ifdef CONFIG_BLK_DEV_IDEACPI
546 struct ide_acpi_drive_link *acpidata;
547#endif
1da177e4
LT		 548 struct list_head list;
549 struct device gendev;
f36d4024 550 struct completion gendev_rel_comp; /* to deal with device release() */
d7c26ebb 551
2b9efba4
BZ		 552 /* current packet command */
553 struct ide_atapi_pc *pc;
554
d7c26ebb 555 /* callback for packet commands */
b14c7212 556 void (*pc_callback)(struct ide_drive_s *, int);
3b8ac539 557
85e39035
BZ		 558 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
559 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
560 unsigned int, int);
561
3b8ac539 562 unsigned long atapi_flags;
67c56364
BZ		 563
564 struct ide_atapi_pc request_sense_pc;
565 struct request request_sense_rq;
d7c26ebb
BP		 566};
567
568typedef struct ide_drive_s ide_drive_t;
1da177e4 569
8604affd
BZ		 570#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
571
374e042c 572struct ide_task_s;
039788e1 573struct ide_port_info;
1da177e4 574
374e042c
BZ		 575struct ide_tp_ops {
576 void (*exec_command)(struct hwif_s *, u8);
577 u8 (*read_status)(struct hwif_s *);
578 u8 (*read_altstatus)(struct hwif_s *);
579 u8 (*read_sff_dma_status)(struct hwif_s *);
580
581 void (*set_irq)(struct hwif_s *, int);
582
583 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
584 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
585
586 void (*input_data)(ide_drive_t *, struct request *, void *,
587 unsigned int);
588 void (*output_data)(ide_drive_t *, struct request *, void *,
589 unsigned int);
590};
591
592extern const struct ide_tp_ops default_tp_ops;
593
39b986a6
BZ		 594/**
595 * struct ide_port_ops - IDE port operations
596 *
597 * @init_dev: host specific initialization of a device
598 * @set_pio_mode: routine to program host for PIO mode
599 * @set_dma_mode: routine to program host for DMA mode
600 * @selectproc: tweaks hardware to select drive
601 * @reset_poll: chipset polling based on hba specifics
602 * @pre_reset: chipset specific changes to default for device-hba resets
603 * @resetproc: routine to reset controller after a disk reset
604 * @maskproc: special host masking for drive selection
605 * @quirkproc: check host's drive quirk list
606 *
607 * @mdma_filter: filter MDMA modes
608 * @udma_filter: filter UDMA modes
609 *
610 * @cable_detect: detect cable type
611 */
ac95beed 612struct ide_port_ops {
e6d95bd1 613 void (*init_dev)(ide_drive_t *);
ac95beed 614 void (*set_pio_mode)(ide_drive_t *, const u8);
ac95beed 615 void (*set_dma_mode)(ide_drive_t *, const u8);
ac95beed 616 void (*selectproc)(ide_drive_t *);
ac95beed 617 int (*reset_poll)(ide_drive_t *);
ac95beed 618 void (*pre_reset)(ide_drive_t *);
ac95beed 619 void (*resetproc)(ide_drive_t *);
ac95beed 620 void (*maskproc)(ide_drive_t *, int);
ac95beed
BZ		 621 void (*quirkproc)(ide_drive_t *);
622
623 u8 (*mdma_filter)(ide_drive_t *);
624 u8 (*udma_filter)(ide_drive_t *);
625
626 u8 (*cable_detect)(struct hwif_s *);
627};
628
5e37bdc0
BZ		 629struct ide_dma_ops {
630 void (*dma_host_set)(struct ide_drive_s *, int);
631 int (*dma_setup)(struct ide_drive_s *);
632 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
633 void (*dma_start)(struct ide_drive_s *);
634 int (*dma_end)(struct ide_drive_s *);
635 int (*dma_test_irq)(struct ide_drive_s *);
636 void (*dma_lost_irq)(struct ide_drive_s *);
637 void (*dma_timeout)(struct ide_drive_s *);
638};
639
08da591e
BZ		 640struct ide_host;
641
1da177e4
LT		 642typedef struct hwif_s {
643 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
644 struct hwif_s *mate; /* other hwif from same PCI chip */
645 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
646 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
647
08da591e
BZ		 648 struct ide_host *host;
649
1da177e4
LT		 650 char name[6]; /* name of interface, eg. "ide0" */
651
4c3032d8
BZ		 652 struct ide_io_ports io_ports;
653
1da177e4 654 unsigned long sata_scr[SATA_NR_PORTS];
1da177e4 655
1da177e4
LT		 656 ide_drive_t drives[MAX_DRIVES]; /* drive info */
657
658 u8 major; /* our major number */
659 u8 index; /* 0 for ide0; 1 for ide1; ... */
660 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
1da177e4 661
e95d9c6b 662 u32 host_flags;
6a824c92 663
4099d143
BZ		 664 u8 pio_mask;
665
1da177e4
LT		 666 u8 ultra_mask;
667 u8 mwdma_mask;
668 u8 swdma_mask;
669
49521f97
BZ		 670 u8 cbl; /* cable type */
671
1da177e4
LT		 672 hwif_chipset_t chipset; /* sub-module for tuning.. */
673
36501650
BZ		 674 struct device *dev;
675
18e181fe
BZ		 676 ide_ack_intr_t *ack_intr;
677
1da177e4
LT		 678 void (*rw_disk)(ide_drive_t *, struct request *);
679
374e042c 680 const struct ide_tp_ops *tp_ops;
ac95beed 681 const struct ide_port_ops *port_ops;
f37afdac 682 const struct ide_dma_ops *dma_ops;
bfa14b42 683
f0dd8712 684 void (*ide_dma_clear_irq)(ide_drive_t *drive);
1da177e4 685
1da177e4
LT		 686 /* dma physical region descriptor table (cpu view) */
687 unsigned int *dmatable_cpu;
688 /* dma physical region descriptor table (dma view) */
689 dma_addr_t dmatable_dma;
690 /* Scatter-gather list used to build the above */
691 struct scatterlist *sg_table;
692 int sg_max_nents; /* Maximum number of entries in it */
693 int sg_nents; /* Current number of entries in it */
694 int sg_dma_direction; /* dma transfer direction */
695
696 /* data phase of the active command (currently only valid for PIO/DMA) */
697 int data_phase;
698
699 unsigned int nsect;
700 unsigned int nleft;
55c16a70 701 struct scatterlist *cursg;
1da177e4
LT		 702 unsigned int cursg_ofs;
703
1da177e4
LT		 704 int rqsize; /* max sectors per request */
705 int irq; /* our irq number */
706
1da177e4 707 unsigned long dma_base; /* base addr for dma ports */
1da177e4 708
1da177e4
LT		 709 unsigned long config_data; /* for use by chipset-specific code */
710 unsigned long select_data; /* for use by chipset-specific code */
711
020e322d
SS		 712 unsigned long extra_base; /* extra addr for dma ports */
713 unsigned extra_ports; /* number of extra dma ports */
714
1da177e4 715 unsigned present : 1; /* this interface exists */
1da177e4
LT		 716 unsigned serialized : 1; /* serialized all channel operation */
717 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
1da177e4
LT		 718 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
719
f74c9141
BZ		 720 struct device gendev;
721 struct device *portdev;
722
f36d4024 723 struct completion gendev_rel_comp; /* To deal with device release() */
1da177e4
LT		 724
725 void *hwif_data; /* extra hwif data */
726
727 unsigned dma;
e3a59b4d
HR		 728
729#ifdef CONFIG_BLK_DEV_IDEACPI
730 struct ide_acpi_hwif_link *acpidata;
731#endif
22fc6ecc 732} ____cacheline_internodealigned_in_smp ide_hwif_t;
1da177e4 733
48c3c107
BZ		 734struct ide_host {
735 ide_hwif_t *ports[MAX_HWIFS];
736 unsigned int n_ports;
6cdf6eb3 737 struct device *dev[2];
feb22b7f 738 unsigned int (*init_chipset)(struct pci_dev *);
ef0b0427 739 unsigned long host_flags;
6cdf6eb3 740 void *host_priv;
48c3c107
BZ		 741};
742
1da177e4
LT		 743/*
744 * internal ide interrupt handler type
745 */
1da177e4
LT		 746typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
747typedef int (ide_expiry_t)(ide_drive_t *);
748
0eea6458 749/* used by ide-cd, ide-floppy, etc. */
9567b349 750typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
0eea6458 751
1da177e4
LT		 752typedef struct hwgroup_s {
753 /* irq handler, if active */
754 ide_startstop_t (*handler)(ide_drive_t *);
a6fbb1c8 755
1da177e4
LT		 756 /* BOOL: protects all fields below */
757 volatile int busy;
758 /* BOOL: wake us up on timer expiry */
759 unsigned int sleeping : 1;
760 /* BOOL: polling active & poll_timeout field valid */
761 unsigned int polling : 1;
913759ac 762
1da177e4
LT		 763 /* current drive */
764 ide_drive_t *drive;
765 /* ptr to current hwif in linked-list */
766 ide_hwif_t *hwif;
767
1da177e4
LT		 768 /* current request */
769 struct request *rq;
a6fbb1c8 770
1da177e4
LT		 771 /* failsafe timer */
772 struct timer_list timer;
1da177e4
LT		 773 /* timeout value during long polls */
774 unsigned long poll_timeout;
775 /* queried upon timeouts */
776 int (*expiry)(ide_drive_t *);
a6fbb1c8 777
23450319
SS		 778 int req_gen;
779 int req_gen_timer;
1da177e4
LT		 780} ide_hwgroup_t;
781
7662d046
BZ		 782typedef struct ide_driver_s ide_driver_t;
783
f9383c42 784extern struct mutex ide_setting_mtx;
1da177e4 785
92f1f8fd
EO		 786/*
787 * configurable drive settings
788 */
789
790#define DS_SYNC (1 << 0)
791
792struct ide_devset {
793 int (*get)(ide_drive_t *);
794 int (*set)(ide_drive_t *, int);
795 unsigned int flags;
796};
797
798#define __DEVSET(_flags, _get, _set) { \
799 .flags = _flags, \
800 .get = _get, \
801 .set = _set, \
802}
7662d046 803
8185d5aa 804#define ide_devset_get(name, field) \
92f1f8fd 805static int get_##name(ide_drive_t *drive) \
8185d5aa
BZ		 806{ \
807 return drive->field; \
808}
809
810#define ide_devset_set(name, field) \
92f1f8fd 811static int set_##name(ide_drive_t *drive, int arg) \
8185d5aa
BZ		 812{ \
813 drive->field = arg; \
814 return 0; \
815}
816
92f1f8fd
EO		 817#define __IDE_DEVSET(_name, _flags, _get, _set) \
818const struct ide_devset ide_devset_##_name = \
819 __DEVSET(_flags, _get, _set)
820
821#define IDE_DEVSET(_name, _flags, _get, _set) \
822static __IDE_DEVSET(_name, _flags, _get, _set)
823
824#define ide_devset_rw(_name, _func) \
825IDE_DEVSET(_name, 0, get_##_func, set_##_func)
826
827#define ide_devset_w(_name, _func) \
828IDE_DEVSET(_name, 0, NULL, set_##_func)
829
830#define ide_devset_rw_sync(_name, _func) \
831IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
832
833#define ide_decl_devset(_name) \
834extern const struct ide_devset ide_devset_##_name
835
836ide_decl_devset(io_32bit);
837ide_decl_devset(keepsettings);
838ide_decl_devset(pio_mode);
839ide_decl_devset(unmaskirq);
840ide_decl_devset(using_dma);
841
7662d046 842#ifdef CONFIG_IDE_PROC_FS
1da177e4 843/*
92f1f8fd 844 * /proc/ide interface
1da177e4
LT		 845 */
846
92f1f8fd
EO		 847#define ide_devset_rw_field(_name, _field) \
848ide_devset_get(_name, _field); \
849ide_devset_set(_name, _field); \
850IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
851
852struct ide_proc_devset {
853 const char *name;
854 const struct ide_devset *setting;
855 int min, max;
856 int (*mulf)(ide_drive_t *);
857 int (*divf)(ide_drive_t *);
8185d5aa
BZ		 858};
859
92f1f8fd
EO		 860#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
861 .name = __stringify(_name), \
862 .setting = &ide_devset_##_name, \
863 .min = _min, \
864 .max = _max, \
865 .mulf = _mulf, \
866 .divf = _divf, \
8185d5aa
BZ		 867}
868
92f1f8fd
EO		 869#define IDE_PROC_DEVSET(_name, _min, _max) \
870__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
8185d5aa 871
1da177e4
LT		 872typedef struct {
873 const char *name;
874 mode_t mode;
875 read_proc_t *read_proc;
876 write_proc_t *write_proc;
877} ide_proc_entry_t;
878
ecfd80e4
BZ		 879void proc_ide_create(void);
880void proc_ide_destroy(void);
5cbf79cd 881void ide_proc_register_port(ide_hwif_t *);
d9270a3f 882void ide_proc_port_register_devices(ide_hwif_t *);
5b0c4b30 883void ide_proc_unregister_device(ide_drive_t *);
5cbf79cd 884void ide_proc_unregister_port(ide_hwif_t *);
7662d046
BZ		 885void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
886void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
887
1da177e4
LT		 888read_proc_t proc_ide_read_capacity;
889read_proc_t proc_ide_read_geometry;
890
1da177e4
LT		 891/*
892 * Standard exit stuff:
893 */
894#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
895{ \
896 len -= off; \
897 if (len < count) { \
898 *eof = 1; \
899 if (len <= 0) \
900 return 0; \
901 } else \
902 len = count; \
903 *start = page + off; \
904 return len; \
905}
906#else
ecfd80e4
BZ		 907static inline void proc_ide_create(void) { ; }
908static inline void proc_ide_destroy(void) { ; }
5cbf79cd 909static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
d9270a3f 910static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
5b0c4b30 911static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
5cbf79cd 912static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
7662d046
BZ		 913static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
914static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1da177e4
LT		 915#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
916#endif
917
918/*
919 * Power Management step value (rq->pm->pm_step).
920 *
921 * The step value starts at 0 (ide_pm_state_start_suspend) for a
922 * suspend operation or 1000 (ide_pm_state_start_resume) for a
923 * resume operation.
924 *
925 * For each step, the core calls the subdriver start_power_step() first.
926 * This can return:
927 * - ide_stopped : In this case, the core calls us back again unless
928 * step have been set to ide_power_state_completed.
929 * - ide_started : In this case, the channel is left busy until an
930 * async event (interrupt) occurs.
931 * Typically, start_power_step() will issue a taskfile request with
932 * do_rw_taskfile().
933 *
934 * Upon reception of the interrupt, the core will call complete_power_step()
935 * with the error code if any. This routine should update the step value
936 * and return. It should not start a new request. The core will call
937 * start_power_step for the new step value, unless step have been set to
938 * ide_power_state_completed.
939 *
940 * Subdrivers are expected to define their own additional power
941 * steps from 1..999 for suspend and from 1001..1999 for resume,
942 * other values are reserved for future use.
943 */
944
945enum {
946 ide_pm_state_completed = -1,
947 ide_pm_state_start_suspend = 0,
948 ide_pm_state_start_resume = 1000,
949};
950
951/*
952 * Subdrivers support.
4ef3b8f4
LR		 953 *
954 * The gendriver.owner field should be set to the module owner of this driver.
955 * The gendriver.name field should be set to the name of this driver
1da177e4 956 */
7662d046 957struct ide_driver_s {
1da177e4
LT		 958 const char *version;
959 u8 media;
1da177e4
LT		 960 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
961 int (*end_request)(ide_drive_t *, int, int);
962 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
1da177e4 963 struct device_driver gen_driver;
4031bbe4
RK		 964 int (*probe)(ide_drive_t *);
965 void (*remove)(ide_drive_t *);
0d2157f7 966 void (*resume)(ide_drive_t *);
4031bbe4 967 void (*shutdown)(ide_drive_t *);
7662d046 968#ifdef CONFIG_IDE_PROC_FS
92f1f8fd
EO		 969 ide_proc_entry_t *proc;
970 const struct ide_proc_devset *settings;
7662d046
BZ		 971#endif
972};
1da177e4 973
4031bbe4
RK		 974#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
975
08da591e
BZ		 976int ide_device_get(ide_drive_t *);
977void ide_device_put(ide_drive_t *);
978
aa768773
BZ		 979struct ide_ioctl_devset {
980 unsigned int get_ioctl;
981 unsigned int set_ioctl;
92f1f8fd 982 const struct ide_devset *setting;
aa768773
BZ		 983};
984
985int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
986 unsigned long, const struct ide_ioctl_devset *);
987
988int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
989 unsigned, unsigned long);
1da177e4 990
ebae41a5
BZ		 991extern int ide_vlb_clk;
992extern int ide_pci_clk;
993
1da177e4 994extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
dbe217af
AC		 995int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
996 int uptodate, int nr_sectors);
1da177e4 997
1da177e4
LT		 998extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
999
cd2a2d96
BZ		 1000void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1001 ide_expiry_t *);
1da177e4 1002
1fc14258
BZ		 1003void ide_execute_pkt_cmd(ide_drive_t *);
1004
9f87abe8
BZ		 1005void ide_pad_transfer(ide_drive_t *, int, int);
1006
1da177e4
LT		 1007ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1008
1da177e4
LT		 1009ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1010
4dde4492 1011void ide_fix_driveid(u16 *);
01745112 1012
1da177e4
LT		 1013extern void ide_fixstring(u8 *, const int, const int);
1014
b163f46d
BZ		 1015int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1016
74af21cf 1017int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1da177e4 1018
1da177e4
LT		 1019extern ide_startstop_t ide_do_reset (ide_drive_t *);
1020
92f1f8fd
EO		 1021extern int ide_devset_execute(ide_drive_t *drive,
1022 const struct ide_devset *setting, int arg);
1023
63f5abb0 1024extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1da177e4 1025
1da177e4
LT		 1026extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1027
9e42237f
BZ		 1028enum {
1029 IDE_TFLAG_LBA48 = (1 << 0),
74095a91
BZ		 1030 IDE_TFLAG_FLAGGED = (1 << 2),
1031 IDE_TFLAG_OUT_DATA = (1 << 3),
1032 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
1033 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
1034 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
1035 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
1036 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
1037 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
1038 IDE_TFLAG_OUT_HOB_NSECT |
1039 IDE_TFLAG_OUT_HOB_LBAL |
1040 IDE_TFLAG_OUT_HOB_LBAM |
1041 IDE_TFLAG_OUT_HOB_LBAH,
1042 IDE_TFLAG_OUT_FEATURE = (1 << 9),
1043 IDE_TFLAG_OUT_NSECT = (1 << 10),
1044 IDE_TFLAG_OUT_LBAL = (1 << 11),
1045 IDE_TFLAG_OUT_LBAM = (1 << 12),
1046 IDE_TFLAG_OUT_LBAH = (1 << 13),
1047 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
1048 IDE_TFLAG_OUT_NSECT |
1049 IDE_TFLAG_OUT_LBAL |
1050 IDE_TFLAG_OUT_LBAM |
1051 IDE_TFLAG_OUT_LBAH,
807e35d6 1052 IDE_TFLAG_OUT_DEVICE = (1 << 14),
ac026ff2 1053 IDE_TFLAG_WRITE = (1 << 15),
866e2ec9
BZ		 1054 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
1055 IDE_TFLAG_IN_DATA = (1 << 17),
57d7366b 1056 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
f6e29e35 1057 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
c2b57cdc
BZ		 1058 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1059 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1060 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1061 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1062 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1063 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1064 IDE_TFLAG_IN_HOB_LBAM |
1065 IDE_TFLAG_IN_HOB_LBAH,
1066 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1067 IDE_TFLAG_IN_HOB_NSECT |
1068 IDE_TFLAG_IN_HOB_LBA,
92eb4380 1069 IDE_TFLAG_IN_FEATURE = (1 << 1),
c2b57cdc
BZ		 1070 IDE_TFLAG_IN_NSECT = (1 << 25),
1071 IDE_TFLAG_IN_LBAL = (1 << 26),
1072 IDE_TFLAG_IN_LBAM = (1 << 27),
1073 IDE_TFLAG_IN_LBAH = (1 << 28),
1074 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1075 IDE_TFLAG_IN_LBAM |
1076 IDE_TFLAG_IN_LBAH,
1077 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1078 IDE_TFLAG_IN_LBA,
1079 IDE_TFLAG_IN_DEVICE = (1 << 29),
657cc1a8
BZ		 1080 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1081 IDE_TFLAG_IN_HOB,
1082 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1083 IDE_TFLAG_IN_TF,
1084 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1085 IDE_TFLAG_IN_DEVICE,
35cf2b94
TH		 1086 /* force 16-bit I/O operations */
1087 IDE_TFLAG_IO_16BIT = (1 << 30),
395d8ef5
BZ		 1088 /* ide_task_t was allocated using kmalloc() */
1089 IDE_TFLAG_DYN = (1 << 31),
9e42237f
BZ		 1090};
1091
650d841d
BZ		 1092struct ide_taskfile {
1093 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1094
1095 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1096 u8 hob_nsect;
1097 u8 hob_lbal;
1098 u8 hob_lbam;
1099 u8 hob_lbah;
1100
1101 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1102
1103 union { /*  7: */
1104 u8 error; /* read: error */
1105 u8 feature; /* write: feature */
1106 };
1107
1108 u8 nsect; /* 8: number of sectors */
1109 u8 lbal; /* 9: LBA low */
1110 u8 lbam; /* 10: LBA mid */
1111 u8 lbah; /* 11: LBA high */
1112
1113 u8 device; /* 12: device select */
1114
1115 union { /* 13: */
1116 u8 status; /*  read: status  */
1117 u8 command; /* write: command */
1118 };
1119};
1120
1da177e4 1121typedef struct ide_task_s {
650d841d
BZ		 1122 union {
1123 struct ide_taskfile tf;
1124 u8 tf_array[14];
1125 };
866e2ec9 1126 u32 tf_flags;
1da177e4 1127 int data_phase;
1da177e4
LT		 1128 struct request *rq; /* copy of request */
1129 void *special; /* valid_t generally */
1130} ide_task_t;
1131
089c5c7e 1132void ide_tf_dump(const char *, struct ide_taskfile *);
1da177e4 1133
374e042c
BZ		 1134void ide_exec_command(ide_hwif_t *, u8);
1135u8 ide_read_status(ide_hwif_t *);
1136u8 ide_read_altstatus(ide_hwif_t *);
1137u8 ide_read_sff_dma_status(ide_hwif_t *);
1138
1139void ide_set_irq(ide_hwif_t *, int);
1140
1141void ide_tf_load(ide_drive_t *, ide_task_t *);
1142void ide_tf_read(ide_drive_t *, ide_task_t *);
1143
1144void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1145void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1146
acaa0f5f
BZ		 1147int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1148
1da177e4 1149extern void SELECT_DRIVE(ide_drive_t *);
ed4af48f 1150void SELECT_MASK(ide_drive_t *, int);
1da177e4 1151
92eb4380 1152u8 ide_read_error(ide_drive_t *);
1823649b 1153void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
92eb4380 1154
1da177e4 1155extern int drive_is_ready(ide_drive_t *);
1da177e4 1156
2fc57388
BZ		 1157void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1158
51509eec
BZ		 1159int ide_check_atapi_device(ide_drive_t *, const char *);
1160
7bf7420a
BZ		 1161void ide_init_pc(struct ide_atapi_pc *);
1162
7645c151
BZ		 1163/*
1164 * Special requests for ide-tape block device strategy routine.
1165 *
1166 * In order to service a character device command, we add special requests to
1167 * the tail of our block device request queue and wait for their completion.
1168 */
1169enum {
1170 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1171 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1172 REQ_IDETAPE_READ = (1 << 2),
1173 REQ_IDETAPE_WRITE = (1 << 3),
1174};
1175
2ac07d92 1176int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
7645c151 1177
de699ad5 1178int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
0c8a6c7a 1179int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
0578042d 1180int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
6b0da28b
BZ		 1181void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1182void ide_retry_pc(ide_drive_t *, struct gendisk *);
0578042d 1183
844b9468
BZ		 1184static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1185{
1186 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1187}
1188
1189int ide_scsi_expiry(ide_drive_t *);
1190
aa5d2de7 1191ide_startstop_t ide_transfer_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
2b9efba4 1192ide_startstop_t ide_issue_pc(ide_drive_t *,
6bf1641c 1193 ide_handler_t *, unsigned int, ide_expiry_t *);
594c16d8 1194
f6e29e35 1195ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1da177e4 1196
4d7a984b
TH		 1197void task_end_request(ide_drive_t *, struct request *, u8);
1198
ac026ff2 1199int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
9a3c49be
BZ		 1200int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1201
1da177e4 1202int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1da177e4 1203
1da177e4 1204extern int ide_driveid_update(ide_drive_t *);
1da177e4
LT		 1205extern int ide_config_drive_speed(ide_drive_t *, u8);
1206extern u8 eighty_ninty_three (ide_drive_t *);
1da177e4
LT		 1207extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1208
1209extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1210
1da177e4
LT		 1211extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1212
1da177e4 1213extern void ide_timer_expiry(unsigned long);
7d12e780 1214extern irqreturn_t ide_intr(int irq, void *dev_id);
165125e1 1215extern void do_ide_request(struct request_queue *);
1da177e4
LT		 1216
1217void ide_init_disk(struct gendisk *, ide_drive_t *);
1218
6d208b39 1219#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
725522b5
GKH		 1220extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1221#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
6d208b39
BZ		 1222#else
1223#define ide_pci_register_driver(d) pci_register_driver(d)
1224#endif
1225
c97c6aca 1226void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
48c3c107 1227 hw_regs_t *, hw_regs_t **);
85620436 1228void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1da177e4 1229
8e882ba1 1230#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
b123f56e
BZ		 1231int ide_pci_set_master(struct pci_dev *, const char *);
1232unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
ebb00fb5 1233int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
b123f56e 1234int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
c413b9b9 1235#else
b123f56e
BZ		 1236static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1237 const struct ide_port_info *d)
1238{
1239 return -EINVAL;
1240}
c413b9b9
BZ		 1241#endif
1242
1da177e4
LT		 1243typedef struct ide_pci_enablebit_s {
1244 u8 reg; /* byte pci reg holding the enable-bit */
1245 u8 mask; /* mask to isolate the enable-bit */
1246 u8 val; /* value of masked reg when "enabled" */
1247} ide_pci_enablebit_t;
1248
1249enum {
1250 /* Uses ISA control ports not PCI ones. */
a5d8c5c8 1251 IDE_HFLAG_ISA_PORTS = (1 << 0),
6a824c92 1252 /* single port device */
a5d8c5c8 1253 IDE_HFLAG_SINGLE = (1 << 1),
6a824c92
BZ		 1254 /* don't use legacy PIO blacklist */
1255 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
e277f91f
BZ		 1256 /* set for the second port of QD65xx */
1257 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
26bcb879
BZ		 1258 /* use PIO8/9 for prefetch off/on */
1259 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1260 /* use PIO6/7 for fast-devsel off/on */
1261 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1262 /* use 100-102 and 200-202 PIO values to set DMA modes */
1263 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
aedea591
BZ		 1264 /*
1265 * keep DMA setting when programming PIO mode, may be used only
1266 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1267 */
1268 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
88b2b32b
BZ		 1269 /* program host for the transfer mode after programming device */
1270 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1271 /* don't program host/device for the transfer mode ("smart" hosts) */
1272 IDE_HFLAG_NO_SET_MODE = (1 << 9),
0ae2e178
BZ		 1273 /* trust BIOS for programming chipset/device for DMA */
1274 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
cafa027b
BZ		 1275 /* host is CS5510/CS5520 */
1276 IDE_HFLAG_CS5520 = (1 << 11),
33c1002e
BZ		 1277 /* ATAPI DMA is unsupported */
1278 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
5e71d9c5
BZ		 1279 /* set if host is a "non-bootable" controller */
1280 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
47b68788
BZ		 1281 /* host doesn't support DMA */
1282 IDE_HFLAG_NO_DMA = (1 << 14),
1283 /* check if host is PCI IDE device before allowing DMA */
1284 IDE_HFLAG_NO_AUTODMA = (1 << 15),
c5dd43ec
BZ		 1285 /* host uses MMIO */
1286 IDE_HFLAG_MMIO = (1 << 16),
238e4f14
BZ		 1287 /* no LBA48 */
1288 IDE_HFLAG_NO_LBA48 = (1 << 17),
1289 /* no LBA48 DMA */
1290 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
ed67b923
BZ		 1291 /* data FIFO is cleared by an error */
1292 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1c51361a
BZ		 1293 /* serialize ports */
1294 IDE_HFLAG_SERIALIZE = (1 << 20),
3985ee3b
BZ		 1295 /* use legacy IRQs */
1296 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
8acf28c0
BZ		 1297 /* force use of legacy IRQs */
1298 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
272a3709
BZ		 1299 /* limit LBA48 requests to 256 sectors */
1300 IDE_HFLAG_RQSIZE_256 = (1 << 23),
caea7602
BZ		 1301 /* use 32-bit I/O ops */
1302 IDE_HFLAG_IO_32BIT = (1 << 24),
1303 /* unmask IRQs */
1304 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1fd18905
BZ		 1305 /* serialize ports if DMA is possible (for sl82c105) */
1306 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
8ac2b42a
BZ		 1307 /* force host out of "simplex" mode */
1308 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
4166c199
BZ		 1309 /* DSC overlap is unsupported */
1310 IDE_HFLAG_NO_DSC = (1 << 29),
807b90d0
BZ		 1311 /* never use 32-bit I/O ops */
1312 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1313 /* never unmask IRQs */
1314 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1da177e4
LT		 1315};
1316
7cab14a7 1317#ifdef CONFIG_BLK_DEV_OFFBOARD
7cab14a7 1318# define IDE_HFLAG_OFF_BOARD 0
5e71d9c5
BZ		 1319#else
1320# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
7cab14a7
BZ		 1321#endif
1322
039788e1 1323struct ide_port_info {
1da177e4 1324 char *name;
a326b02b 1325 unsigned int (*init_chipset)(struct pci_dev *);
1da177e4
LT		 1326 void (*init_iops)(ide_hwif_t *);
1327 void (*init_hwif)(ide_hwif_t *);
b123f56e
BZ		 1328 int (*init_dma)(ide_hwif_t *,
1329 const struct ide_port_info *);
ac95beed 1330
374e042c 1331 const struct ide_tp_ops *tp_ops;
ac95beed 1332 const struct ide_port_ops *port_ops;
f37afdac 1333 const struct ide_dma_ops *dma_ops;
ac95beed 1334
1da177e4 1335 ide_pci_enablebit_t enablebits[2];
528a572d 1336 hwif_chipset_t chipset;
9ffcf364 1337 u32 host_flags;
4099d143 1338 u8 pio_mask;
5f8b6c34
BZ		 1339 u8 swdma_mask;
1340 u8 mwdma_mask;
18137207 1341 u8 udma_mask;
039788e1 1342};
1da177e4 1343
6cdf6eb3
BZ		 1344int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1345int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1346 const struct ide_port_info *, void *);
ef0b0427 1347void ide_pci_remove(struct pci_dev *);
1da177e4 1348
feb22b7f
BZ		 1349#ifdef CONFIG_PM
1350int ide_pci_suspend(struct pci_dev *, pm_message_t);
1351int ide_pci_resume(struct pci_dev *);
1352#else
1353#define ide_pci_suspend NULL
1354#define ide_pci_resume NULL
1355#endif
1356
1da177e4
LT		 1357void ide_map_sg(ide_drive_t *, struct request *);
1358void ide_init_sg_cmd(ide_drive_t *, struct request *);
1359
1360#define BAD_DMA_DRIVE 0
1361#define GOOD_DMA_DRIVE 1
1362
65e5f2e3
JC		 1363struct drive_list_entry {
1364 const char *id_model;
1365 const char *id_firmware;
1366};
1367
4dde4492 1368int ide_in_drive_list(u16 *, const struct drive_list_entry *);
a5b7e70d
BZ		 1369
1370#ifdef CONFIG_BLK_DEV_IDEDMA
1da177e4 1371int __ide_dma_bad_drive(ide_drive_t *);
3ab7efe8 1372int ide_id_dma_bug(ide_drive_t *);
7670df73
BZ		 1373
1374u8 ide_find_dma_mode(ide_drive_t *, u8);
1375
1376static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1377{
1378 return ide_find_dma_mode(drive, XFER_UDMA_6);
1379}
1380
4a546e04 1381void ide_dma_off_quietly(ide_drive_t *);
7469aaf6 1382void ide_dma_off(ide_drive_t *);
4a546e04 1383void ide_dma_on(ide_drive_t *);
3608b5d7 1384int ide_set_dma(ide_drive_t *);
578cfa0d 1385void ide_check_dma_crc(ide_drive_t *);
1da177e4
LT		 1386ide_startstop_t ide_dma_intr(ide_drive_t *);
1387
062f9f02
BZ		 1388int ide_build_sglist(ide_drive_t *, struct request *);
1389void ide_destroy_dmatable(ide_drive_t *);
1390
8e882ba1 1391#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1da177e4 1392extern int ide_build_dmatable(ide_drive_t *, struct request *);
b8e73fba
BZ		 1393int ide_allocate_dma_engine(ide_hwif_t *);
1394void ide_release_dma_engine(ide_hwif_t *);
1da177e4 1395
15ce926a 1396void ide_dma_host_set(ide_drive_t *, int);
1da177e4 1397extern int ide_dma_setup(ide_drive_t *);
f37afdac 1398void ide_dma_exec_cmd(ide_drive_t *, u8);
1da177e4
LT		 1399extern void ide_dma_start(ide_drive_t *);
1400extern int __ide_dma_end(ide_drive_t *);
f37afdac 1401int ide_dma_test_irq(ide_drive_t *);
841d2a9b 1402extern void ide_dma_lost_irq(ide_drive_t *);
c283f5db 1403extern void ide_dma_timeout(ide_drive_t *);
71fc9fcc 1404extern const struct ide_dma_ops sff_dma_ops;
8e882ba1 1405#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1da177e4
LT		 1406
1407#else
3ab7efe8 1408static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
7670df73 1409static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
2d5eaa6d 1410static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
4a546e04 1411static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
7469aaf6 1412static inline void ide_dma_off(ide_drive_t *drive) { ; }
4a546e04 1413static inline void ide_dma_on(ide_drive_t *drive) { ; }
1da177e4 1414static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
3608b5d7 1415static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
578cfa0d 1416static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1da177e4
LT		 1417#endif /* CONFIG_BLK_DEV_IDEDMA */
1418
8e882ba1 1419#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
0d1bad21 1420static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1da177e4
LT		 1421#endif
1422
e3a59b4d
HR		 1423#ifdef CONFIG_BLK_DEV_IDEACPI
1424extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1425extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1426extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1427extern void ide_acpi_init(ide_hwif_t *hwif);
eafd88a3 1428void ide_acpi_port_init_devices(ide_hwif_t *);
5e32132b 1429extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
e3a59b4d
HR		 1430#else
1431static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1432static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1433static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1434static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
eafd88a3 1435static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
5e32132b 1436static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
e3a59b4d
HR		 1437#endif
1438
fbd13088 1439void ide_remove_port_from_hwgroup(ide_hwif_t *);
387750c3 1440void ide_unregister(ide_hwif_t *);
1da177e4
LT		 1441
1442void ide_register_region(struct gendisk *);
1443void ide_unregister_region(struct gendisk *);
1444
f01393e4 1445void ide_undecoded_slave(ide_drive_t *);
1da177e4 1446
9fd91d95
BZ		 1447void ide_port_apply_params(ide_hwif_t *);
1448
48c3c107
BZ		 1449struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1450struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
8a69580e 1451void ide_host_free(struct ide_host *);
48c3c107
BZ		 1452int ide_host_register(struct ide_host *, const struct ide_port_info *,
1453 hw_regs_t **);
6f904d01
BZ		 1454int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1455 struct ide_host **);
48c3c107 1456void ide_host_remove(struct ide_host *);
0bfeee7d 1457int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
2dde7861
BZ		 1458void ide_port_unregister_devices(ide_hwif_t *);
1459void ide_port_scan(ide_hwif_t *);
1da177e4
LT		 1460
1461static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1462{
1463 return hwif->hwif_data;
1464}
1465
1466static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1467{
1468 hwif->hwif_data = data;
1469}
1470
3ab7efe8 1471const char *ide_xfer_verbose(u8 mode);
1da177e4
LT		 1472extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1473extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1474
a501633c 1475u64 ide_get_lba_addr(struct ide_taskfile *, int);
1da177e4
LT		 1476u8 ide_dump_status(ide_drive_t *, const char *, u8);
1477
3be53f3f
BZ		 1478struct ide_timing {
1479 u8 mode;
1480 u8 setup; /* t1 */
1481 u16 act8b; /* t2 for 8-bit io */
1482 u16 rec8b; /* t2i for 8-bit io */
1483 u16 cyc8b; /* t0 for 8-bit io */
1484 u16 active; /* t2 or tD */
1485 u16 recover; /* t2i or tK */
1486 u16 cycle; /* t0 */
1487 u16 udma; /* t2CYCTYP/2 */
1488};
1489
1490enum {
1491 IDE_TIMING_SETUP = (1 << 0),
1492 IDE_TIMING_ACT8B = (1 << 1),
1493 IDE_TIMING_REC8B = (1 << 2),
1494 IDE_TIMING_CYC8B = (1 << 3),
1495 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1496 IDE_TIMING_CYC8B,
1497 IDE_TIMING_ACTIVE = (1 << 4),
1498 IDE_TIMING_RECOVER = (1 << 5),
1499 IDE_TIMING_CYCLE = (1 << 6),
1500 IDE_TIMING_UDMA = (1 << 7),
1501 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1502 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1503 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1504};
1505
f06ab340 1506struct ide_timing *ide_timing_find_mode(u8);
c9d6c1a2 1507u16 ide_pio_cycle_time(ide_drive_t *, u8);
f06ab340
BZ		 1508void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1509 struct ide_timing *, unsigned int);
1510int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1511
9ad54093
BZ		 1512int ide_scan_pio_blacklist(char *);
1513
2134758d 1514u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1da177e4 1515
88b2b32b
BZ		 1516int ide_set_pio_mode(ide_drive_t *, u8);
1517int ide_set_dma_mode(ide_drive_t *, u8);
1518
26bcb879
BZ		 1519void ide_set_pio(ide_drive_t *, u8);
1520
1521static inline void ide_set_max_pio(ide_drive_t *drive)
1522{
1523 ide_set_pio(drive, 255);
1524}
1da177e4
LT		 1525
1526extern spinlock_t ide_lock;
ef29888e 1527extern struct mutex ide_cfg_mtx;
1da177e4
LT		 1528/*
1529 * Structure locking:
1530 *
ef29888e 1531 * ide_cfg_mtx and ide_lock together protect changes to
1da177e4
LT		 1532 * ide_hwif_t->{next,hwgroup}
1533 * ide_drive_t->next
1534 *
1535 * ide_hwgroup_t->busy: ide_lock
1536 * ide_hwgroup_t->hwif: ide_lock
1537 * ide_hwif_t->mate: constant, no locking
1538 * ide_drive_t->hwif: constant, no locking
1539 */
1540
366c7f55 1541#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1da177e4
LT		 1542
1543extern struct bus_type ide_bus_type;
f74c9141 1544extern struct class *ide_port_class;
1da177e4 1545
7b9f25b5
BZ		 1546static inline void ide_dump_identify(u8 *id)
1547{
1548 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1549}
1550
86b37860
CL		 1551static inline int hwif_to_node(ide_hwif_t *hwif)
1552{
96f80219 1553 return hwif->dev ? dev_to_node(hwif->dev) : -1;
86b37860
CL		 1554}
1555
7e59ea21 1556static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1b678347 1557{
7e59ea21 1558 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1b678347 1559
7e59ea21 1560 return peer->present ? peer : NULL;
1b678347 1561}
1da177e4 1562#endif /* _IDE_H */