]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - include/linux/ide.h
mm: clean up mm_counter
[mirror_ubuntu-zesty-kernel.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
a1df5169
BP
29/* for request_sense */
30#include <linux/cdrom.h>
31
d45b70ab 32#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
4ee06b7e
BZ
33# define SUPPORT_VLB_SYNC 0
34#else
35# define SUPPORT_VLB_SYNC 1
1da177e4
LT
36#endif
37
1da177e4
LT
38/*
39 * Probably not wise to fiddle with these
40 */
b40d1b88 41#define IDE_DEFAULT_MAX_FAILURES 1
1da177e4
LT
42#define ERROR_MAX 8 /* Max read/write errors per sector */
43#define ERROR_RESET 3 /* Reset controller every 4th retry */
44#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
45
c152cc1a
BZ
46/* Error codes returned in rq->errors to the higher part of the driver. */
47enum {
48 IDE_DRV_ERROR_GENERAL = 101,
49 IDE_DRV_ERROR_FILEMARK = 102,
50 IDE_DRV_ERROR_EOD = 103,
51};
52
1da177e4
LT
53/*
54 * Definitions for accessing IDE controller registers
55 */
56#define IDE_NR_PORTS (10)
57
4c3032d8
BZ
58struct ide_io_ports {
59 unsigned long data_addr;
60
61 union {
62 unsigned long error_addr; /* read: error */
63 unsigned long feature_addr; /* write: feature */
64 };
65
66 unsigned long nsect_addr;
67 unsigned long lbal_addr;
68 unsigned long lbam_addr;
69 unsigned long lbah_addr;
70
71 unsigned long device_addr;
72
73 union {
74 unsigned long status_addr; /*  read: status  */
75 unsigned long command_addr; /* write: command */
76 };
77
78 unsigned long ctl_addr;
79
80 unsigned long irq_addr;
81};
1da177e4
LT
82
83#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
1da177e4 84
3a7d2484
BZ
85#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88#define DRIVE_READY (ATA_DRDY | ATA_DSC)
89
90#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
1da177e4
LT
91
92#define SATA_NR_PORTS (3) /* 16 possible ?? */
93
94#define SATA_STATUS_OFFSET (0)
1da177e4 95#define SATA_ERROR_OFFSET (1)
1da177e4 96#define SATA_CONTROL_OFFSET (2)
1da177e4 97
1da177e4
LT
98/*
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
105 *
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
109 *
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
113 */
114#define PRD_BYTES 8
115#define PRD_ENTRIES 256
116
117/*
118 * Some more useful definitions
119 */
120#define PARTN_BITS 6 /* number of minor dev bits for partitions */
121#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122#define SECTOR_SIZE 512
151a6701 123
1da177e4
LT
124/*
125 * Timeouts for various operations:
126 */
d6e2955a 127enum {
602da297
DM
128 /* spec allows up to 20ms, but CF cards and SSD drives need more */
129 WAIT_DRQ = 1 * HZ, /* 1s */
d6e2955a
BZ
130 /* some laptops are very slow */
131 WAIT_READY = 5 * HZ, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE = 30 * HZ, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD = 10 * HZ, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
140 /*
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
144 */
145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
148};
1da177e4 149
79e36a9f
EO
150/*
151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
153 */
154#define REQ_DRIVE_RESET 0x20
92f1f8fd 155#define REQ_DEVSET_EXEC 0x21
4abdc6ee
EO
156#define REQ_PARK_HEADS 0x22
157#define REQ_UNPARK_HEADS 0x23
79e36a9f 158
1da177e4
LT
159/*
160 * hwif_chipset_t is used to keep track of the specific hardware
161 * chipset used by each IDE interface, if known.
162 */
528a572d 163enum { ide_unknown, ide_generic, ide_pci,
1da177e4
LT
164 ide_cmd640, ide_dtc2278, ide_ali14xx,
165 ide_qd65xx, ide_umc8672, ide_ht6560b,
b7876a6f 166 ide_4drives, ide_pmac, ide_acorn,
9a0e77f2 167 ide_au1xxx, ide_palm3710
528a572d
BZ
168};
169
170typedef u8 hwif_chipset_t;
1da177e4
LT
171
172/*
173 * Structure to hold all information about the location of this port
174 */
9f36d314 175struct ide_hw {
4c3032d8
BZ
176 union {
177 struct ide_io_ports io_ports;
178 unsigned long io_ports_array[IDE_NR_PORTS];
179 };
180
1da177e4 181 int irq; /* our irq number */
c56c5648 182 struct device *dev, *parent;
d6276b5f 183 unsigned long config;
9f36d314 184};
1da177e4 185
9f36d314 186static inline void ide_std_init_ports(struct ide_hw *hw,
1da177e4
LT
187 unsigned long io_addr,
188 unsigned long ctl_addr)
189{
190 unsigned int i;
191
4c3032d8
BZ
192 for (i = 0; i <= 7; i++)
193 hw->io_ports_array[i] = io_addr++;
1da177e4 194
4c3032d8 195 hw->io_ports.ctl_addr = ctl_addr;
1da177e4
LT
196}
197
c5bfc375 198#define MAX_HWIFS 10
83ae20c8 199
1da177e4
LT
200/*
201 * Now for the data we need to maintain per-drive: ide_drive_t
202 */
203
204#define ide_scsi 0x21
205#define ide_disk 0x20
206#define ide_optical 0x7
207#define ide_cdrom 0x5
208#define ide_tape 0x1
209#define ide_floppy 0x0
210
211/*
212 * Special Driver Flags
1da177e4 213 */
ca1b96e0
BZ
214enum {
215 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
216 IDE_SFLAG_RECALIBRATE = (1 << 1),
217 IDE_SFLAG_SET_MULTMODE = (1 << 2),
218};
1da177e4 219
1da177e4
LT
220/*
221 * Status returned from various ide_ functions
222 */
223typedef enum {
224 ide_stopped, /* no drive operation was started */
225 ide_started, /* a drive operation was started, handler was set */
226} ide_startstop_t;
227
60f85019
SS
228enum {
229 IDE_VALID_ERROR = (1 << 1),
230 IDE_VALID_FEATURE = IDE_VALID_ERROR,
231 IDE_VALID_NSECT = (1 << 2),
232 IDE_VALID_LBAL = (1 << 3),
233 IDE_VALID_LBAM = (1 << 4),
234 IDE_VALID_LBAH = (1 << 5),
235 IDE_VALID_DEVICE = (1 << 6),
236 IDE_VALID_LBA = IDE_VALID_LBAL |
237 IDE_VALID_LBAM |
238 IDE_VALID_LBAH,
239 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
240 IDE_VALID_NSECT |
241 IDE_VALID_LBA,
242 IDE_VALID_IN_TF = IDE_VALID_NSECT |
243 IDE_VALID_LBA,
244 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
245 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
246 IDE_VALID_NSECT |
247 IDE_VALID_LBA,
248};
249
d6ff9f64
BZ
250enum {
251 IDE_TFLAG_LBA48 = (1 << 0),
60f85019
SS
252 IDE_TFLAG_WRITE = (1 << 1),
253 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
254 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
d6ff9f64 255 /* force 16-bit I/O operations */
60f85019 256 IDE_TFLAG_IO_16BIT = (1 << 4),
22aa4b32 257 /* struct ide_cmd was allocated using kmalloc() */
60f85019
SS
258 IDE_TFLAG_DYN = (1 << 5),
259 IDE_TFLAG_FS = (1 << 6),
260 IDE_TFLAG_MULTI_PIO = (1 << 7),
665d66e8 261 IDE_TFLAG_SET_XFER = (1 << 8),
19710d25
BZ
262};
263
264enum {
265 IDE_FTFLAG_FLAGGED = (1 << 0),
266 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
267 IDE_FTFLAG_OUT_DATA = (1 << 2),
268 IDE_FTFLAG_IN_DATA = (1 << 3),
d6ff9f64
BZ
269};
270
271struct ide_taskfile {
745483f1
SS
272 u8 data; /* 0: data byte (for TASKFILE ioctl) */
273 union { /* 1: */
274 u8 error; /* read: error */
275 u8 feature; /* write: feature */
d6ff9f64 276 };
745483f1
SS
277 u8 nsect; /* 2: number of sectors */
278 u8 lbal; /* 3: LBA low */
279 u8 lbam; /* 4: LBA mid */
280 u8 lbah; /* 5: LBA high */
281 u8 device; /* 6: device select */
282 union { /* 7: */
283 u8 status; /* read: status */
d6ff9f64
BZ
284 u8 command; /* write: command */
285 };
286};
287
22aa4b32 288struct ide_cmd {
745483f1
SS
289 struct ide_taskfile tf;
290 struct ide_taskfile hob;
60f85019
SS
291 struct {
292 struct {
293 u8 tf;
294 u8 hob;
295 } out, in;
296 } valid;
297
665d66e8 298 u16 tf_flags;
19710d25 299 u8 ftf_flags; /* for TASKFILE ioctl */
0dfb991c 300 int protocol;
b6308ee0
BZ
301
302 int sg_nents; /* number of sg entries */
303 int orig_sg_nents;
304 int sg_dma_direction; /* DMA transfer direction */
305
bf717c0a 306 unsigned int nbytes;
b6308ee0 307 unsigned int nleft;
a08915ba
BZ
308 unsigned int last_xfer_len;
309
b6308ee0
BZ
310 struct scatterlist *cursg;
311 unsigned int cursg_ofs;
312
d6ff9f64 313 struct request *rq; /* copy of request */
22aa4b32 314};
d6ff9f64 315
67c56364
BZ
316/* ATAPI packet command flags */
317enum {
318 /* set when an error is considered normal - no retry (ide-tape) */
319 PC_FLAG_ABORT = (1 << 0),
320 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
321 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
322 PC_FLAG_DMA_OK = (1 << 3),
323 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
324 PC_FLAG_DMA_ERROR = (1 << 5),
325 PC_FLAG_WRITING = (1 << 6),
67c56364
BZ
326};
327
4cad085e 328#define ATAPI_WAIT_PC (60 * HZ)
67c56364
BZ
329
330struct ide_atapi_pc {
331 /* actual packet bytes */
332 u8 c[12];
333 /* incremented on each retry */
334 int retries;
335 int error;
336
337 /* bytes to transfer */
338 int req_xfer;
67c56364
BZ
339
340 /* the corresponding request */
341 struct request *rq;
342
343 unsigned long flags;
344
345 /*
346 * those are more or less driver-specific and some of them are subject
347 * to change/removal later.
348 */
67c56364
BZ
349 unsigned long timeout;
350};
351
8185d5aa 352struct ide_devset;
7f3c868b 353struct ide_driver;
1da177e4 354
e3a59b4d
HR
355#ifdef CONFIG_BLK_DEV_IDEACPI
356struct ide_acpi_drive_link;
357struct ide_acpi_hwif_link;
358#endif
359
806f80a6
BZ
360struct ide_drive_s;
361
362struct ide_disk_ops {
363 int (*check)(struct ide_drive_s *, const char *);
364 int (*get_capacity)(struct ide_drive_s *);
e957b60d 365 u64 (*set_capacity)(struct ide_drive_s *, u64);
806f80a6
BZ
366 void (*setup)(struct ide_drive_s *);
367 void (*flush)(struct ide_drive_s *);
368 int (*init_media)(struct ide_drive_s *, struct gendisk *);
369 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
370 int);
371 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
372 sector_t);
badf8082
AV
373 int (*ioctl)(struct ide_drive_s *, struct block_device *,
374 fmode_t, unsigned int, unsigned long);
806f80a6
BZ
375};
376
3b8ac539
BP
377/* ATAPI device flags */
378enum {
379 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
0578042d
BZ
380
381 /* ide-cd */
3b8ac539 382 /* Drive cannot eject the disc. */
bf64741f 383 IDE_AFLAG_NO_EJECT = (1 << 1),
3b8ac539 384 /* Drive is a pre ATAPI 1.2 drive. */
bf64741f 385 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
3b8ac539 386 /* TOC addresses are in BCD. */
bf64741f 387 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
3b8ac539 388 /* TOC track numbers are in BCD. */
bf64741f 389 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
3b8ac539 390 /* Saved TOC information is current. */
bf64741f 391 IDE_AFLAG_TOC_VALID = (1 << 6),
3b8ac539 392 /* We think that the drive door is locked. */
bf64741f 393 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
3b8ac539 394 /* SET_CD_SPEED command is unsupported. */
bf64741f
BP
395 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
396 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
397 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
398 IDE_AFLAG_SANYO_3CD = (1 << 11),
399 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
400 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
401 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
3b8ac539
BP
402
403 /* ide-floppy */
3b8ac539 404 /* Avoid commands not supported in Clik drive */
bf64741f 405 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
3b8ac539 406 /* Requires BH algorithm for packets */
bf64741f 407 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
49cac39e 408 /* Supports format progress report */
bf64741f 409 IDE_AFLAG_SRFP = (1 << 17),
3b8ac539
BP
410
411 /* ide-tape */
bf64741f 412 IDE_AFLAG_IGNORE_DSC = (1 << 18),
3b8ac539 413 /* 0 When the tape position is unknown */
bf64741f 414 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
3b8ac539 415 /* Device already opened */
bf64741f 416 IDE_AFLAG_BUSY = (1 << 20),
3b8ac539 417 /* Attempt to auto-detect the current user block size */
bf64741f 418 IDE_AFLAG_DETECT_BS = (1 << 21),
3b8ac539 419 /* Currently on a filemark */
bf64741f 420 IDE_AFLAG_FILEMARK = (1 << 22),
3b8ac539 421 /* 0 = no tape is loaded, so we don't rewind after ejecting */
bf64741f 422 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
f20f2586 423
bf64741f 424 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
3b8ac539
BP
425};
426
97100fc8
BZ
427/* device flags */
428enum {
429 /* restore settings after device reset */
430 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
431 /* device is using DMA for read/write */
432 IDE_DFLAG_USING_DMA = (1 << 1),
433 /* okay to unmask other IRQs */
434 IDE_DFLAG_UNMASK = (1 << 2),
435 /* don't attempt flushes */
436 IDE_DFLAG_NOFLUSH = (1 << 3),
437 /* DSC overlap */
438 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
439 /* give potential excess bandwidth */
440 IDE_DFLAG_NICE1 = (1 << 5),
441 /* device is physically present */
442 IDE_DFLAG_PRESENT = (1 << 6),
075affcb
BZ
443 /* disable Host Protected Area */
444 IDE_DFLAG_NOHPA = (1 << 7),
97100fc8
BZ
445 /* id read from device (synthetic if not set) */
446 IDE_DFLAG_ID_READ = (1 << 8),
447 IDE_DFLAG_NOPROBE = (1 << 9),
448 /* need to do check_media_change() */
449 IDE_DFLAG_REMOVABLE = (1 << 10),
450 /* needed for removable devices */
451 IDE_DFLAG_ATTACH = (1 << 11),
452 IDE_DFLAG_FORCED_GEOM = (1 << 12),
453 /* disallow setting unmask bit */
454 IDE_DFLAG_NO_UNMASK = (1 << 13),
455 /* disallow enabling 32-bit I/O */
456 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
457 /* for removable only: door lock/unlock works */
458 IDE_DFLAG_DOORLOCKING = (1 << 15),
459 /* disallow DMA */
460 IDE_DFLAG_NODMA = (1 << 16),
461 /* powermanagment told us not to do anything, so sleep nicely */
462 IDE_DFLAG_BLOCKED = (1 << 17),
97100fc8 463 /* sleeping & sleep field valid */
5317464d
BP
464 IDE_DFLAG_SLEEPING = (1 << 18),
465 IDE_DFLAG_POST_RESET = (1 << 19),
466 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
467 IDE_DFLAG_LBA48 = (1 << 21),
97100fc8 468 /* status of write cache */
5317464d 469 IDE_DFLAG_WCACHE = (1 << 22),
97100fc8 470 /* used for ignoring ATA_DF */
5317464d 471 IDE_DFLAG_NOWERR = (1 << 23),
c3922048 472 /* retrying in PIO */
5317464d
BP
473 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
474 IDE_DFLAG_LBA = (1 << 25),
4abdc6ee 475 /* don't unload heads */
5317464d 476 IDE_DFLAG_NO_UNLOAD = (1 << 26),
4abdc6ee 477 /* heads unloaded, please don't reset port */
5317464d
BP
478 IDE_DFLAG_PARKED = (1 << 27),
479 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
da167876 480 /* write protect */
5317464d
BP
481 IDE_DFLAG_WP = (1 << 29),
482 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
734affdc 483 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
97100fc8
BZ
484};
485
d7c26ebb 486struct ide_drive_s {
1da177e4
LT
487 char name[4]; /* drive name, such as "hda" */
488 char driver_req[10]; /* requests specific driver */
489
165125e1 490 struct request_queue *queue; /* request queue */
1da177e4
LT
491
492 struct request *rq; /* current request */
1da177e4 493 void *driver_data; /* extra driver data */
48fb2688 494 u16 *id; /* identification info */
7662d046 495#ifdef CONFIG_IDE_PROC_FS
1da177e4 496 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
92f1f8fd 497 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
7662d046 498#endif
1da177e4
LT
499 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
500
806f80a6
BZ
501 const struct ide_disk_ops *disk_ops;
502
97100fc8
BZ
503 unsigned long dev_flags;
504
1da177e4 505 unsigned long sleep; /* sleep until this time */
1da177e4
LT
506 unsigned long timeout; /* max time to wait for irq */
507
ca1b96e0 508 u8 special_flags; /* special action flags */
1da177e4 509
7f612f27 510 u8 select; /* basic drive/head select reg value */
1da177e4 511 u8 retry_pio; /* retrying dma capable host in pio */
1da177e4 512 u8 waiting_for_dma; /* dma currently in progress */
0a9b6f88 513 u8 dma; /* atapi dma flag */
1da177e4 514
1da177e4 515 u8 init_speed; /* transfer rate set at boot */
1da177e4 516 u8 current_speed; /* current transfer rate set */
513daadd 517 u8 desired_speed; /* desired transfer rate set */
d2d4e780 518 u8 pio_mode; /* for ->set_pio_mode _only_ */
3fccaa19 519 u8 dma_mode; /* for ->dma_pio_mode _only_ */
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 */
1da177e4 526 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
3a7d2484 527 u8 bad_wstat; /* used for ignoring ATA_DF */
1da177e4
LT
528 u8 head; /* "real" number of heads */
529 u8 sect; /* "real" sectors per track */
530 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
531 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
532
baf08f0b
BZ
533 /* delay this long before sending packet command */
534 u8 pc_delay;
535
1da177e4
LT
536 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
537 unsigned int cyl; /* "real" number of cyls */
5bfb151f 538 void *drive_data; /* used by set_pio_mode/dev_select() */
1da177e4
LT
539 unsigned int failures; /* current failure count */
540 unsigned int max_failures; /* maximum allowed failure count */
e957b60d 541 u64 probed_capacity;/* initial/native media capacity */
1da177e4
LT
542 u64 capacity64; /* total number of sectors */
543
544 int lun; /* logical unit */
545 int crc_count; /* crc counter to reduce drive speed */
b22b2ca4
BP
546
547 unsigned long debug_mask; /* debugging levels switch */
548
e3a59b4d
HR
549#ifdef CONFIG_BLK_DEV_IDEACPI
550 struct ide_acpi_drive_link *acpidata;
551#endif
1da177e4
LT
552 struct list_head list;
553 struct device gendev;
f36d4024 554 struct completion gendev_rel_comp; /* to deal with device release() */
d7c26ebb 555
2b9efba4
BZ
556 /* current packet command */
557 struct ide_atapi_pc *pc;
558
5e2040fd
BZ
559 /* last failed packet command */
560 struct ide_atapi_pc *failed_pc;
561
d7c26ebb 562 /* callback for packet commands */
03a2faae 563 int (*pc_callback)(struct ide_drive_s *, int);
3b8ac539 564
d6251d44
BP
565 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
566
3b8ac539 567 unsigned long atapi_flags;
67c56364
BZ
568
569 struct ide_atapi_pc request_sense_pc;
a1df5169
BP
570
571 /* current sense rq and buffer */
572 bool sense_rq_armed;
573 struct request sense_rq;
574 struct request_sense sense_data;
d7c26ebb
BP
575};
576
577typedef struct ide_drive_s ide_drive_t;
1da177e4 578
5aeddf90
BP
579#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
580
581#define to_ide_drv(obj, cont_type) \
8fed4368 582 container_of(obj, struct cont_type, dev)
5aeddf90
BP
583
584#define ide_drv_g(disk, cont_type) \
585 container_of((disk)->private_data, struct cont_type, driver)
8604affd 586
039788e1 587struct ide_port_info;
1da177e4 588
374e042c
BZ
589struct ide_tp_ops {
590 void (*exec_command)(struct hwif_s *, u8);
591 u8 (*read_status)(struct hwif_s *);
592 u8 (*read_altstatus)(struct hwif_s *);
ecf3a31d 593 void (*write_devctl)(struct hwif_s *, u8);
374e042c 594
abb596b2 595 void (*dev_select)(ide_drive_t *);
c9ff9e7b 596 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
3153c26b 597 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
374e042c 598
adb1af98
BZ
599 void (*input_data)(ide_drive_t *, struct ide_cmd *,
600 void *, unsigned int);
601 void (*output_data)(ide_drive_t *, struct ide_cmd *,
602 void *, unsigned int);
374e042c
BZ
603};
604
605extern const struct ide_tp_ops default_tp_ops;
606
39b986a6
BZ
607/**
608 * struct ide_port_ops - IDE port operations
609 *
610 * @init_dev: host specific initialization of a device
611 * @set_pio_mode: routine to program host for PIO mode
612 * @set_dma_mode: routine to program host for DMA mode
39b986a6
BZ
613 * @reset_poll: chipset polling based on hba specifics
614 * @pre_reset: chipset specific changes to default for device-hba resets
615 * @resetproc: routine to reset controller after a disk reset
616 * @maskproc: special host masking for drive selection
617 * @quirkproc: check host's drive quirk list
bfa7d8e5 618 * @clear_irq: clear IRQ
39b986a6
BZ
619 *
620 * @mdma_filter: filter MDMA modes
621 * @udma_filter: filter UDMA modes
622 *
623 * @cable_detect: detect cable type
624 */
ac95beed 625struct ide_port_ops {
e6d95bd1 626 void (*init_dev)(ide_drive_t *);
e085b3ca 627 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
8776168c 628 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
ac95beed 629 int (*reset_poll)(ide_drive_t *);
ac95beed 630 void (*pre_reset)(ide_drive_t *);
ac95beed 631 void (*resetproc)(ide_drive_t *);
ac95beed 632 void (*maskproc)(ide_drive_t *, int);
ac95beed 633 void (*quirkproc)(ide_drive_t *);
bfa7d8e5 634 void (*clear_irq)(ide_drive_t *);
f4d3ffa5 635 int (*test_irq)(struct hwif_s *);
ac95beed
BZ
636
637 u8 (*mdma_filter)(ide_drive_t *);
638 u8 (*udma_filter)(ide_drive_t *);
639
640 u8 (*cable_detect)(struct hwif_s *);
641};
642
5e37bdc0
BZ
643struct ide_dma_ops {
644 void (*dma_host_set)(struct ide_drive_s *, int);
22981694 645 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
5e37bdc0
BZ
646 void (*dma_start)(struct ide_drive_s *);
647 int (*dma_end)(struct ide_drive_s *);
648 int (*dma_test_irq)(struct ide_drive_s *);
649 void (*dma_lost_irq)(struct ide_drive_s *);
35c9b4da 650 /* below ones are optional */
8a4a5738 651 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
22117d6e 652 int (*dma_timer_expiry)(struct ide_drive_s *);
35c9b4da 653 void (*dma_clear)(struct ide_drive_s *);
592b5315
SS
654 /*
655 * The following method is optional and only required to be
656 * implemented for the SFF-8038i compatible controllers.
657 */
658 u8 (*dma_sff_read_status)(struct hwif_s *);
5e37bdc0
BZ
659};
660
5880b5de
BZ
661enum {
662 IDE_PFLAG_PROBING = (1 << 0),
663};
664
08da591e
BZ
665struct ide_host;
666
1da177e4 667typedef struct hwif_s {
1da177e4 668 struct hwif_s *mate; /* other hwif from same PCI chip */
1da177e4
LT
669 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
670
08da591e
BZ
671 struct ide_host *host;
672
1da177e4
LT
673 char name[6]; /* name of interface, eg. "ide0" */
674
4c3032d8
BZ
675 struct ide_io_ports io_ports;
676
1da177e4 677 unsigned long sata_scr[SATA_NR_PORTS];
1da177e4 678
2bd24a1c 679 ide_drive_t *devices[MAX_DRIVES + 1];
1da177e4 680
5880b5de
BZ
681 unsigned long port_flags;
682
1da177e4
LT
683 u8 major; /* our major number */
684 u8 index; /* 0 for ide0; 1 for ide1; ... */
685 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
1da177e4 686
e95d9c6b 687 u32 host_flags;
6a824c92 688
4099d143
BZ
689 u8 pio_mask;
690
1da177e4
LT
691 u8 ultra_mask;
692 u8 mwdma_mask;
693 u8 swdma_mask;
694
49521f97
BZ
695 u8 cbl; /* cable type */
696
1da177e4
LT
697 hwif_chipset_t chipset; /* sub-module for tuning.. */
698
36501650
BZ
699 struct device *dev;
700
1da177e4
LT
701 void (*rw_disk)(ide_drive_t *, struct request *);
702
374e042c 703 const struct ide_tp_ops *tp_ops;
ac95beed 704 const struct ide_port_ops *port_ops;
f37afdac 705 const struct ide_dma_ops *dma_ops;
bfa14b42 706
1da177e4
LT
707 /* dma physical region descriptor table (cpu view) */
708 unsigned int *dmatable_cpu;
709 /* dma physical region descriptor table (dma view) */
710 dma_addr_t dmatable_dma;
2bbd57ca
BZ
711
712 /* maximum number of PRD table entries */
713 int prd_max_nents;
714 /* PRD entry size in bytes */
715 int prd_ent_size;
716
1da177e4
LT
717 /* Scatter-gather list used to build the above */
718 struct scatterlist *sg_table;
719 int sg_max_nents; /* Maximum number of entries in it */
1da177e4 720
22aa4b32 721 struct ide_cmd cmd; /* current command */
d6ff9f64 722
1da177e4
LT
723 int rqsize; /* max sectors per request */
724 int irq; /* our irq number */
725
1da177e4 726 unsigned long dma_base; /* base addr for dma ports */
1da177e4 727
1da177e4
LT
728 unsigned long config_data; /* for use by chipset-specific code */
729 unsigned long select_data; /* for use by chipset-specific code */
730
020e322d
SS
731 unsigned long extra_base; /* extra addr for dma ports */
732 unsigned extra_ports; /* number of extra dma ports */
733
1da177e4 734 unsigned present : 1; /* this interface exists */
5b31f855 735 unsigned busy : 1; /* serializes devices on a port */
1da177e4 736
f74c9141
BZ
737 struct device gendev;
738 struct device *portdev;
739
f36d4024 740 struct completion gendev_rel_comp; /* To deal with device release() */
1da177e4
LT
741
742 void *hwif_data; /* extra hwif data */
743
e3a59b4d
HR
744#ifdef CONFIG_BLK_DEV_IDEACPI
745 struct ide_acpi_hwif_link *acpidata;
746#endif
b65fac32
BZ
747
748 /* IRQ handler, if active */
749 ide_startstop_t (*handler)(ide_drive_t *);
750
751 /* BOOL: polling active & poll_timeout field valid */
752 unsigned int polling : 1;
753
754 /* current drive */
755 ide_drive_t *cur_dev;
756
757 /* current request */
758 struct request *rq;
759
760 /* failsafe timer */
761 struct timer_list timer;
762 /* timeout value during long polls */
763 unsigned long poll_timeout;
764 /* queried upon timeouts */
765 int (*expiry)(ide_drive_t *);
766
767 int req_gen;
768 int req_gen_timer;
769
770 spinlock_t lock;
22fc6ecc 771} ____cacheline_internodealigned_in_smp ide_hwif_t;
1da177e4 772
a36223b0
BZ
773#define MAX_HOST_PORTS 4
774
48c3c107 775struct ide_host {
2bd24a1c 776 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
48c3c107 777 unsigned int n_ports;
6cdf6eb3 778 struct device *dev[2];
e354c1d8 779
2ed0ef54 780 int (*init_chipset)(struct pci_dev *);
e354c1d8
BZ
781
782 void (*get_lock)(irq_handler_t, void *);
783 void (*release_lock)(void);
784
849d7130 785 irq_handler_t irq_handler;
e354c1d8 786
ef0b0427 787 unsigned long host_flags;
255115fb
BZ
788
789 int irq_flags;
790
6cdf6eb3 791 void *host_priv;
bd53cbcc 792 ide_hwif_t *cur_port; /* for hosts requiring serialization */
5b31f855
BZ
793
794 /* used for hosts requiring serialization */
e720b9e4 795 volatile unsigned long host_busy;
48c3c107
BZ
796};
797
5b31f855
BZ
798#define IDE_HOST_BUSY 0
799
1da177e4
LT
800/*
801 * internal ide interrupt handler type
802 */
1da177e4
LT
803typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
804typedef int (ide_expiry_t)(ide_drive_t *);
805
0eea6458 806/* used by ide-cd, ide-floppy, etc. */
adb1af98 807typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
0eea6458 808
f9383c42 809extern struct mutex ide_setting_mtx;
1da177e4 810
92f1f8fd
EO
811/*
812 * configurable drive settings
813 */
814
815#define DS_SYNC (1 << 0)
816
817struct ide_devset {
818 int (*get)(ide_drive_t *);
819 int (*set)(ide_drive_t *, int);
820 unsigned int flags;
821};
822
823#define __DEVSET(_flags, _get, _set) { \
824 .flags = _flags, \
825 .get = _get, \
826 .set = _set, \
827}
7662d046 828
8185d5aa 829#define ide_devset_get(name, field) \
92f1f8fd 830static int get_##name(ide_drive_t *drive) \
8185d5aa
BZ
831{ \
832 return drive->field; \
833}
834
835#define ide_devset_set(name, field) \
92f1f8fd 836static int set_##name(ide_drive_t *drive, int arg) \
8185d5aa
BZ
837{ \
838 drive->field = arg; \
839 return 0; \
840}
841
97100fc8
BZ
842#define ide_devset_get_flag(name, flag) \
843static int get_##name(ide_drive_t *drive) \
844{ \
845 return !!(drive->dev_flags & flag); \
846}
847
848#define ide_devset_set_flag(name, flag) \
849static int set_##name(ide_drive_t *drive, int arg) \
850{ \
851 if (arg) \
852 drive->dev_flags |= flag; \
853 else \
854 drive->dev_flags &= ~flag; \
855 return 0; \
856}
857
92f1f8fd
EO
858#define __IDE_DEVSET(_name, _flags, _get, _set) \
859const struct ide_devset ide_devset_##_name = \
860 __DEVSET(_flags, _get, _set)
861
862#define IDE_DEVSET(_name, _flags, _get, _set) \
863static __IDE_DEVSET(_name, _flags, _get, _set)
864
865#define ide_devset_rw(_name, _func) \
866IDE_DEVSET(_name, 0, get_##_func, set_##_func)
867
868#define ide_devset_w(_name, _func) \
869IDE_DEVSET(_name, 0, NULL, set_##_func)
870
f8790489
BZ
871#define ide_ext_devset_rw(_name, _func) \
872__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
873
874#define ide_ext_devset_rw_sync(_name, _func) \
875__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
92f1f8fd
EO
876
877#define ide_decl_devset(_name) \
878extern const struct ide_devset ide_devset_##_name
879
880ide_decl_devset(io_32bit);
881ide_decl_devset(keepsettings);
882ide_decl_devset(pio_mode);
883ide_decl_devset(unmaskirq);
884ide_decl_devset(using_dma);
885
7662d046 886#ifdef CONFIG_IDE_PROC_FS
1da177e4 887/*
92f1f8fd 888 * /proc/ide interface
1da177e4
LT
889 */
890
92f1f8fd
EO
891#define ide_devset_rw_field(_name, _field) \
892ide_devset_get(_name, _field); \
893ide_devset_set(_name, _field); \
894IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
895
97100fc8
BZ
896#define ide_devset_rw_flag(_name, _field) \
897ide_devset_get_flag(_name, _field); \
898ide_devset_set_flag(_name, _field); \
899IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
900
92f1f8fd
EO
901struct ide_proc_devset {
902 const char *name;
903 const struct ide_devset *setting;
904 int min, max;
905 int (*mulf)(ide_drive_t *);
906 int (*divf)(ide_drive_t *);
8185d5aa
BZ
907};
908
92f1f8fd
EO
909#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
910 .name = __stringify(_name), \
911 .setting = &ide_devset_##_name, \
912 .min = _min, \
913 .max = _max, \
914 .mulf = _mulf, \
915 .divf = _divf, \
8185d5aa
BZ
916}
917
92f1f8fd
EO
918#define IDE_PROC_DEVSET(_name, _min, _max) \
919__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
8185d5aa 920
1da177e4
LT
921typedef struct {
922 const char *name;
923 mode_t mode;
6d703a81 924 const struct file_operations *proc_fops;
1da177e4
LT
925} ide_proc_entry_t;
926
ecfd80e4
BZ
927void proc_ide_create(void);
928void proc_ide_destroy(void);
5cbf79cd 929void ide_proc_register_port(ide_hwif_t *);
d9270a3f 930void ide_proc_port_register_devices(ide_hwif_t *);
5b0c4b30 931void ide_proc_unregister_device(ide_drive_t *);
5cbf79cd 932void ide_proc_unregister_port(ide_hwif_t *);
7f3c868b
BZ
933void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
934void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
7662d046 935
6d703a81
AD
936extern const struct file_operations ide_capacity_proc_fops;
937extern const struct file_operations ide_geometry_proc_fops;
1da177e4 938#else
ecfd80e4
BZ
939static inline void proc_ide_create(void) { ; }
940static inline void proc_ide_destroy(void) { ; }
5cbf79cd 941static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
d9270a3f 942static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
5b0c4b30 943static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
5cbf79cd 944static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
7f3c868b
BZ
945static inline void ide_proc_register_driver(ide_drive_t *drive,
946 struct ide_driver *driver) { ; }
947static inline void ide_proc_unregister_driver(ide_drive_t *drive,
948 struct ide_driver *driver) { ; }
1da177e4
LT
949#endif
950
e1c7c464
BP
951enum {
952 /* enter/exit functions */
953 IDE_DBG_FUNC = (1 << 0),
954 /* sense key/asc handling */
955 IDE_DBG_SENSE = (1 << 1),
956 /* packet commands handling */
957 IDE_DBG_PC = (1 << 2),
958 /* request handling */
959 IDE_DBG_RQ = (1 << 3),
960 /* driver probing/setup */
961 IDE_DBG_PROBE = (1 << 4),
962};
963
964/* DRV_NAME has to be defined in the driver before using the macro below */
088b1b88
BP
965#define __ide_debug_log(lvl, fmt, args...) \
966{ \
967 if (unlikely(drive->debug_mask & lvl)) \
968 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
969 __func__, ## args); \
e1c7c464
BP
970}
971
1da177e4 972/*
0d346ba0 973 * Power Management state machine (rq->pm->pm_step).
1da177e4 974 *
0d346ba0 975 * For each step, the core calls ide_start_power_step() first.
1da177e4
LT
976 * This can return:
977 * - ide_stopped : In this case, the core calls us back again unless
978 * step have been set to ide_power_state_completed.
979 * - ide_started : In this case, the channel is left busy until an
980 * async event (interrupt) occurs.
0d346ba0 981 * Typically, ide_start_power_step() will issue a taskfile request with
1da177e4
LT
982 * do_rw_taskfile().
983 *
0d346ba0 984 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1da177e4
LT
985 * with the error code if any. This routine should update the step value
986 * and return. It should not start a new request. The core will call
0d346ba0
BZ
987 * ide_start_power_step() for the new step value, unless step have been
988 * set to IDE_PM_COMPLETED.
1da177e4 989 */
1da177e4 990enum {
0d346ba0
BZ
991 IDE_PM_START_SUSPEND,
992 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
993 IDE_PM_STANDBY,
994
995 IDE_PM_START_RESUME,
996 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
997 IDE_PM_IDLE,
998 IDE_PM_RESTORE_DMA,
999
1000 IDE_PM_COMPLETED,
1da177e4
LT
1001};
1002
e2984c62
BZ
1003int generic_ide_suspend(struct device *, pm_message_t);
1004int generic_ide_resume(struct device *);
1005
1006void ide_complete_power_step(ide_drive_t *, struct request *);
1007ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
3616b653 1008void ide_complete_pm_rq(ide_drive_t *, struct request *);
e2984c62
BZ
1009void ide_check_pm_state(ide_drive_t *, struct request *);
1010
1da177e4
LT
1011/*
1012 * Subdrivers support.
4ef3b8f4
LR
1013 *
1014 * The gendriver.owner field should be set to the module owner of this driver.
1015 * The gendriver.name field should be set to the name of this driver
1da177e4 1016 */
7f3c868b 1017struct ide_driver {
1da177e4 1018 const char *version;
1da177e4 1019 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1da177e4 1020 struct device_driver gen_driver;
4031bbe4
RK
1021 int (*probe)(ide_drive_t *);
1022 void (*remove)(ide_drive_t *);
0d2157f7 1023 void (*resume)(ide_drive_t *);
4031bbe4 1024 void (*shutdown)(ide_drive_t *);
7662d046 1025#ifdef CONFIG_IDE_PROC_FS
79cb3803
BZ
1026 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1027 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
7662d046
BZ
1028#endif
1029};
1da177e4 1030
7f3c868b 1031#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
4031bbe4 1032
08da591e
BZ
1033int ide_device_get(ide_drive_t *);
1034void ide_device_put(ide_drive_t *);
1035
aa768773
BZ
1036struct ide_ioctl_devset {
1037 unsigned int get_ioctl;
1038 unsigned int set_ioctl;
92f1f8fd 1039 const struct ide_devset *setting;
aa768773
BZ
1040};
1041
1042int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1043 unsigned long, const struct ide_ioctl_devset *);
1044
1bddd9e6 1045int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1da177e4 1046
ebae41a5
BZ
1047extern int ide_vlb_clk;
1048extern int ide_pci_clk;
1049
1caf236d 1050int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
327fa1c2
BZ
1051void ide_kill_rq(ide_drive_t *, struct request *);
1052
60c0cd02
BZ
1053void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1054void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1da177e4 1055
35b5d0be
BZ
1056void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1057 unsigned int);
1fc14258 1058
9f87abe8
BZ
1059void ide_pad_transfer(ide_drive_t *, int, int);
1060
9892ec54 1061ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1da177e4 1062
4dde4492 1063void ide_fix_driveid(u16 *);
01745112 1064
1da177e4
LT
1065extern void ide_fixstring(u8 *, const int, const int);
1066
28ee9bc5 1067int ide_busy_sleep(ide_drive_t *, unsigned long, int);
b163f46d 1068
fa56d4cb 1069int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
74af21cf 1070int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1da177e4 1071
c4e66c36 1072ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
11938c92 1073ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
c4e66c36 1074
1da177e4
LT
1075extern ide_startstop_t ide_do_reset (ide_drive_t *);
1076
92f1f8fd
EO
1077extern int ide_devset_execute(ide_drive_t *drive,
1078 const struct ide_devset *setting, int arg);
1079
22aa4b32 1080void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
f974b196 1081int ide_complete_rq(ide_drive_t *, int, unsigned int);
1da177e4 1082
3153c26b 1083void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
745483f1 1084void ide_tf_dump(const char *, struct ide_cmd *);
1da177e4 1085
374e042c
BZ
1086void ide_exec_command(ide_hwif_t *, u8);
1087u8 ide_read_status(ide_hwif_t *);
1088u8 ide_read_altstatus(ide_hwif_t *);
ecf3a31d 1089void ide_write_devctl(ide_hwif_t *, u8);
374e042c 1090
abb596b2 1091void ide_dev_select(ide_drive_t *);
c9ff9e7b 1092void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
3153c26b 1093void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
374e042c 1094
adb1af98
BZ
1095void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1096void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
374e042c 1097
ed4af48f 1098void SELECT_MASK(ide_drive_t *, int);
1da177e4 1099
92eb4380 1100u8 ide_read_error(ide_drive_t *);
1823649b 1101void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
92eb4380 1102
103f7033
BP
1103int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1104
51509eec
BZ
1105int ide_check_atapi_device(ide_drive_t *, const char *);
1106
7bf7420a
BZ
1107void ide_init_pc(struct ide_atapi_pc *);
1108
4abdc6ee
EO
1109/* Disk head parking */
1110extern wait_queue_head_t ide_park_wq;
1111ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1112 char *buf);
1113ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1114 const char *buf, size_t len);
1115
7645c151
BZ
1116/*
1117 * Special requests for ide-tape block device strategy routine.
1118 *
1119 * In order to service a character device command, we add special requests to
1120 * the tail of our block device request queue and wait for their completion.
1121 */
1122enum {
1123 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1124 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1125 REQ_IDETAPE_READ = (1 << 2),
1126 REQ_IDETAPE_WRITE = (1 << 3),
1127};
1128
5a0e43b5 1129int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
b13345f3 1130 void *, unsigned int);
7645c151 1131
de699ad5 1132int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
0c8a6c7a 1133int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
0578042d 1134int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
6b0da28b 1135void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
6b544fcc 1136void ide_retry_pc(ide_drive_t *drive);
0578042d 1137
a1df5169 1138void ide_prep_sense(ide_drive_t *drive, struct request *rq);
5c4be572 1139int ide_queue_sense_rq(ide_drive_t *drive, void *special);
a1df5169 1140
4cad085e 1141int ide_cd_expiry(ide_drive_t *);
844b9468 1142
392de1d5
BP
1143int ide_cd_get_xferlen(struct request *);
1144
b788ee9c 1145ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
594c16d8 1146
22aa4b32 1147ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1da177e4 1148
a08915ba
BZ
1149void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1150
adb1af98 1151void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
4d7a984b 1152
22aa4b32
BZ
1153int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1154int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
9a3c49be 1155
22aa4b32 1156int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1da177e4 1157
fa56d4cb 1158int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
2ebe1d9e 1159
1da177e4 1160extern int ide_driveid_update(ide_drive_t *);
1da177e4
LT
1161extern int ide_config_drive_speed(ide_drive_t *, u8);
1162extern u8 eighty_ninty_three (ide_drive_t *);
1da177e4
LT
1163extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1164
1165extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1166
1da177e4
LT
1167extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1168
1da177e4 1169extern void ide_timer_expiry(unsigned long);
7d12e780 1170extern irqreturn_t ide_intr(int irq, void *dev_id);
165125e1 1171extern void do_ide_request(struct request_queue *);
1da177e4
LT
1172
1173void ide_init_disk(struct gendisk *, ide_drive_t *);
1174
6d208b39 1175#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
725522b5
GKH
1176extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1177#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
6d208b39
BZ
1178#else
1179#define ide_pci_register_driver(d) pci_register_driver(d)
1180#endif
1181
6636487e
BZ
1182static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1183{
1184 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1185 return 1;
1186 return 0;
1187}
1188
86ccf37c 1189void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
9f36d314 1190 struct ide_hw *, struct ide_hw **);
85620436 1191void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1da177e4 1192
8e882ba1 1193#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
b123f56e
BZ
1194int ide_pci_set_master(struct pci_dev *, const char *);
1195unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
ebb00fb5 1196int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
b123f56e 1197int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
c413b9b9 1198#else
b123f56e
BZ
1199static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1200 const struct ide_port_info *d)
1201{
1202 return -EINVAL;
1203}
c413b9b9
BZ
1204#endif
1205
c0ae5023 1206struct ide_pci_enablebit {
1da177e4
LT
1207 u8 reg; /* byte pci reg holding the enable-bit */
1208 u8 mask; /* mask to isolate the enable-bit */
1209 u8 val; /* value of masked reg when "enabled" */
c0ae5023 1210};
1da177e4
LT
1211
1212enum {
1213 /* Uses ISA control ports not PCI ones. */
a5d8c5c8 1214 IDE_HFLAG_ISA_PORTS = (1 << 0),
6a824c92 1215 /* single port device */
a5d8c5c8 1216 IDE_HFLAG_SINGLE = (1 << 1),
6a824c92
BZ
1217 /* don't use legacy PIO blacklist */
1218 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
e277f91f
BZ
1219 /* set for the second port of QD65xx */
1220 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
26bcb879
BZ
1221 /* use PIO8/9 for prefetch off/on */
1222 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1223 /* use PIO6/7 for fast-devsel off/on */
1224 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1225 /* use 100-102 and 200-202 PIO values to set DMA modes */
1226 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
aedea591
BZ
1227 /*
1228 * keep DMA setting when programming PIO mode, may be used only
1229 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1230 */
1231 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
88b2b32b
BZ
1232 /* program host for the transfer mode after programming device */
1233 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1234 /* don't program host/device for the transfer mode ("smart" hosts) */
1235 IDE_HFLAG_NO_SET_MODE = (1 << 9),
0ae2e178
BZ
1236 /* trust BIOS for programming chipset/device for DMA */
1237 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
cafa027b
BZ
1238 /* host is CS5510/CS5520 */
1239 IDE_HFLAG_CS5520 = (1 << 11),
33c1002e
BZ
1240 /* ATAPI DMA is unsupported */
1241 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
5e71d9c5
BZ
1242 /* set if host is a "non-bootable" controller */
1243 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
47b68788
BZ
1244 /* host doesn't support DMA */
1245 IDE_HFLAG_NO_DMA = (1 << 14),
1246 /* check if host is PCI IDE device before allowing DMA */
1247 IDE_HFLAG_NO_AUTODMA = (1 << 15),
c5dd43ec
BZ
1248 /* host uses MMIO */
1249 IDE_HFLAG_MMIO = (1 << 16),
238e4f14
BZ
1250 /* no LBA48 */
1251 IDE_HFLAG_NO_LBA48 = (1 << 17),
1252 /* no LBA48 DMA */
1253 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
ed67b923
BZ
1254 /* data FIFO is cleared by an error */
1255 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1c51361a
BZ
1256 /* serialize ports */
1257 IDE_HFLAG_SERIALIZE = (1 << 20),
2787cb8a
BZ
1258 /* host is DTC2278 */
1259 IDE_HFLAG_DTC2278 = (1 << 21),
c094ea07
BZ
1260 /* 4 devices on a single set of I/O ports */
1261 IDE_HFLAG_4DRIVES = (1 << 22),
1f66019b
BZ
1262 /* host is TRM290 */
1263 IDE_HFLAG_TRM290 = (1 << 23),
caea7602
BZ
1264 /* use 32-bit I/O ops */
1265 IDE_HFLAG_IO_32BIT = (1 << 24),
1266 /* unmask IRQs */
1267 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
6636487e 1268 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1fd18905
BZ
1269 /* serialize ports if DMA is possible (for sl82c105) */
1270 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
8ac2b42a
BZ
1271 /* force host out of "simplex" mode */
1272 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
4166c199
BZ
1273 /* DSC overlap is unsupported */
1274 IDE_HFLAG_NO_DSC = (1 << 29),
807b90d0
BZ
1275 /* never use 32-bit I/O ops */
1276 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1277 /* never unmask IRQs */
1278 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1da177e4
LT
1279};
1280
7cab14a7 1281#ifdef CONFIG_BLK_DEV_OFFBOARD
7cab14a7 1282# define IDE_HFLAG_OFF_BOARD 0
5e71d9c5
BZ
1283#else
1284# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
7cab14a7
BZ
1285#endif
1286
039788e1 1287struct ide_port_info {
1da177e4 1288 char *name;
e354c1d8 1289
2ed0ef54 1290 int (*init_chipset)(struct pci_dev *);
e354c1d8
BZ
1291
1292 void (*get_lock)(irq_handler_t, void *);
1293 void (*release_lock)(void);
1294
1da177e4
LT
1295 void (*init_iops)(ide_hwif_t *);
1296 void (*init_hwif)(ide_hwif_t *);
b123f56e
BZ
1297 int (*init_dma)(ide_hwif_t *,
1298 const struct ide_port_info *);
ac95beed 1299
374e042c 1300 const struct ide_tp_ops *tp_ops;
ac95beed 1301 const struct ide_port_ops *port_ops;
f37afdac 1302 const struct ide_dma_ops *dma_ops;
ac95beed 1303
c0ae5023
BZ
1304 struct ide_pci_enablebit enablebits[2];
1305
528a572d 1306 hwif_chipset_t chipset;
6b492496
BZ
1307
1308 u16 max_sectors; /* if < than the default one */
1309
9ffcf364 1310 u32 host_flags;
255115fb
BZ
1311
1312 int irq_flags;
1313
4099d143 1314 u8 pio_mask;
5f8b6c34
BZ
1315 u8 swdma_mask;
1316 u8 mwdma_mask;
18137207 1317 u8 udma_mask;
039788e1 1318};
1da177e4 1319
6cdf6eb3
BZ
1320int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1321int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1322 const struct ide_port_info *, void *);
ef0b0427 1323void ide_pci_remove(struct pci_dev *);
1da177e4 1324
feb22b7f
BZ
1325#ifdef CONFIG_PM
1326int ide_pci_suspend(struct pci_dev *, pm_message_t);
1327int ide_pci_resume(struct pci_dev *);
1328#else
1329#define ide_pci_suspend NULL
1330#define ide_pci_resume NULL
1331#endif
1332
22981694 1333void ide_map_sg(ide_drive_t *, struct ide_cmd *);
bf717c0a 1334void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1da177e4
LT
1335
1336#define BAD_DMA_DRIVE 0
1337#define GOOD_DMA_DRIVE 1
1338
65e5f2e3
JC
1339struct drive_list_entry {
1340 const char *id_model;
1341 const char *id_firmware;
1342};
1343
4dde4492 1344int ide_in_drive_list(u16 *, const struct drive_list_entry *);
a5b7e70d
BZ
1345
1346#ifdef CONFIG_BLK_DEV_IDEDMA
2dbe7e91 1347int ide_dma_good_drive(ide_drive_t *);
1da177e4 1348int __ide_dma_bad_drive(ide_drive_t *);
7670df73
BZ
1349
1350u8 ide_find_dma_mode(ide_drive_t *, u8);
1351
1352static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1353{
1354 return ide_find_dma_mode(drive, XFER_UDMA_6);
1355}
1356
4a546e04 1357void ide_dma_off_quietly(ide_drive_t *);
7469aaf6 1358void ide_dma_off(ide_drive_t *);
4a546e04 1359void ide_dma_on(ide_drive_t *);
3608b5d7 1360int ide_set_dma(ide_drive_t *);
578cfa0d 1361void ide_check_dma_crc(ide_drive_t *);
1da177e4
LT
1362ide_startstop_t ide_dma_intr(ide_drive_t *);
1363
2bbd57ca
BZ
1364int ide_allocate_dma_engine(ide_hwif_t *);
1365void ide_release_dma_engine(ide_hwif_t *);
1366
5ae5412d 1367int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
f094d4d8 1368void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
062f9f02 1369
8e882ba1 1370#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
2dbe7e91 1371int config_drive_for_dma(ide_drive_t *);
22981694 1372int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
15ce926a 1373void ide_dma_host_set(ide_drive_t *, int);
22981694 1374int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1da177e4 1375extern void ide_dma_start(ide_drive_t *);
653bcf52 1376int ide_dma_end(ide_drive_t *);
f37afdac 1377int ide_dma_test_irq(ide_drive_t *);
22117d6e 1378int ide_dma_sff_timer_expiry(ide_drive_t *);
592b5315 1379u8 ide_dma_sff_read_status(ide_hwif_t *);
71fc9fcc 1380extern const struct ide_dma_ops sff_dma_ops;
2dbe7e91
BZ
1381#else
1382static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
8e882ba1 1383#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1da177e4 1384
de23ec9c 1385void ide_dma_lost_irq(ide_drive_t *);
65ca5377 1386ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
de23ec9c 1387
1da177e4 1388#else
7670df73 1389static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
2d5eaa6d 1390static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
4a546e04 1391static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
7469aaf6 1392static inline void ide_dma_off(ide_drive_t *drive) { ; }
4a546e04 1393static inline void ide_dma_on(ide_drive_t *drive) { ; }
1da177e4 1394static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
3608b5d7 1395static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
578cfa0d 1396static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
22117d6e 1397static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
65ca5377 1398static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
0d1bad21 1399static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
5ae5412d
BZ
1400static inline int ide_dma_prepare(ide_drive_t *drive,
1401 struct ide_cmd *cmd) { return 1; }
f094d4d8
BZ
1402static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1403 struct ide_cmd *cmd) { ; }
2bbd57ca 1404#endif /* CONFIG_BLK_DEV_IDEDMA */
1da177e4 1405
e3a59b4d 1406#ifdef CONFIG_BLK_DEV_IDEACPI
8b803bd1 1407int ide_acpi_init(void);
2bf427b2 1408bool ide_port_acpi(ide_hwif_t *hwif);
e3a59b4d
HR
1409extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1410extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1411extern void ide_acpi_push_timing(ide_hwif_t *hwif);
8b803bd1 1412void ide_acpi_init_port(ide_hwif_t *);
eafd88a3 1413void ide_acpi_port_init_devices(ide_hwif_t *);
5e32132b 1414extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
e3a59b4d 1415#else
8b803bd1 1416static inline int ide_acpi_init(void) { return 0; }
2bf427b2 1417static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
e3a59b4d
HR
1418static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1419static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1420static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
8b803bd1 1421static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
eafd88a3 1422static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
5e32132b 1423static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
e3a59b4d
HR
1424#endif
1425
1da177e4
LT
1426void ide_register_region(struct gendisk *);
1427void ide_unregister_region(struct gendisk *);
1428
8bc1e5aa 1429void ide_check_nien_quirk_list(ide_drive_t *);
f01393e4 1430void ide_undecoded_slave(ide_drive_t *);
1da177e4 1431
9fd91d95 1432void ide_port_apply_params(ide_hwif_t *);
ebdab07d 1433int ide_sysfs_register_port(ide_hwif_t *);
9fd91d95 1434
9f36d314 1435struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
dca39830 1436 unsigned int);
8a69580e 1437void ide_host_free(struct ide_host *);
48c3c107 1438int ide_host_register(struct ide_host *, const struct ide_port_info *,
9f36d314
BZ
1439 struct ide_hw **);
1440int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
6f904d01 1441 struct ide_host **);
48c3c107 1442void ide_host_remove(struct ide_host *);
0bfeee7d 1443int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
2dde7861
BZ
1444void ide_port_unregister_devices(ide_hwif_t *);
1445void ide_port_scan(ide_hwif_t *);
1da177e4
LT
1446
1447static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1448{
1449 return hwif->hwif_data;
1450}
1451
1452static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1453{
1454 hwif->hwif_data = data;
1455}
1456
1da177e4 1457extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1da177e4 1458
745483f1 1459u64 ide_get_lba_addr(struct ide_cmd *, int);
1da177e4
LT
1460u8 ide_dump_status(ide_drive_t *, const char *, u8);
1461
3be53f3f
BZ
1462struct ide_timing {
1463 u8 mode;
1464 u8 setup; /* t1 */
1465 u16 act8b; /* t2 for 8-bit io */
1466 u16 rec8b; /* t2i for 8-bit io */
1467 u16 cyc8b; /* t0 for 8-bit io */
1468 u16 active; /* t2 or tD */
1469 u16 recover; /* t2i or tK */
1470 u16 cycle; /* t0 */
1471 u16 udma; /* t2CYCTYP/2 */
1472};
1473
1474enum {
1475 IDE_TIMING_SETUP = (1 << 0),
1476 IDE_TIMING_ACT8B = (1 << 1),
1477 IDE_TIMING_REC8B = (1 << 2),
1478 IDE_TIMING_CYC8B = (1 << 3),
1479 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1480 IDE_TIMING_CYC8B,
1481 IDE_TIMING_ACTIVE = (1 << 4),
1482 IDE_TIMING_RECOVER = (1 << 5),
1483 IDE_TIMING_CYCLE = (1 << 6),
1484 IDE_TIMING_UDMA = (1 << 7),
1485 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1486 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1487 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1488};
1489
f06ab340 1490struct ide_timing *ide_timing_find_mode(u8);
c9d6c1a2 1491u16 ide_pio_cycle_time(ide_drive_t *, u8);
f06ab340
BZ
1492void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1493 struct ide_timing *, unsigned int);
1494int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1495
7eeaaaa5 1496#ifdef CONFIG_IDE_XFER_MODE
9ad54093 1497int ide_scan_pio_blacklist(char *);
7eeaaaa5 1498const char *ide_xfer_verbose(u8);
c9ef59ff 1499int ide_pio_need_iordy(ide_drive_t *, const u8);
88b2b32b
BZ
1500int ide_set_pio_mode(ide_drive_t *, u8);
1501int ide_set_dma_mode(ide_drive_t *, u8);
26bcb879 1502void ide_set_pio(ide_drive_t *, u8);
7eeaaaa5
BZ
1503int ide_set_xfer_rate(ide_drive_t *, u8);
1504#else
1505static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1506static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1507#endif
26bcb879
BZ
1508
1509static inline void ide_set_max_pio(ide_drive_t *drive)
1510{
1511 ide_set_pio(drive, 255);
1512}
1da177e4 1513
ebdab07d
BZ
1514char *ide_media_string(ide_drive_t *);
1515
1516extern struct device_attribute ide_dev_attrs[];
1da177e4 1517extern struct bus_type ide_bus_type;
f74c9141 1518extern struct class *ide_port_class;
1da177e4 1519
7b9f25b5
BZ
1520static inline void ide_dump_identify(u8 *id)
1521{
1522 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1523}
1524
86b37860
CL
1525static inline int hwif_to_node(ide_hwif_t *hwif)
1526{
96f80219 1527 return hwif->dev ? dev_to_node(hwif->dev) : -1;
86b37860
CL
1528}
1529
7e59ea21 1530static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1b678347 1531{
5e7f3a46 1532 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1b678347 1533
97100fc8 1534 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1b678347 1535}
2bd24a1c 1536
5bfb151f
JR
1537static inline void *ide_get_drivedata(ide_drive_t *drive)
1538{
1539 return drive->drive_data;
1540}
1541
1542static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1543{
1544 drive->drive_data = data;
1545}
1546
2bd24a1c
BZ
1547#define ide_port_for_each_dev(i, dev, port) \
1548 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1549
7ed5b157
BZ
1550#define ide_port_for_each_present_dev(i, dev, port) \
1551 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1552 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1553
2bd24a1c
BZ
1554#define ide_host_for_each_port(i, port, host) \
1555 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1556
1da177e4 1557#endif /* _IDE_H */