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Luca's patch ported
[cbs-scheduler.git] / include / linux / ide.h
blob25087aead65768401a8b32b582fd42780401fde1
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
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
20 #include <linux/pm.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
23 #endif
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
26 #include <asm/io.h>
27 #include <asm/mutex.h>
28
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
30 # define SUPPORT_VLB_SYNC 0
31 #else
32 # define SUPPORT_VLB_SYNC 1
33 #endif
34
35 /*
36 * Probably not wise to fiddle with these
37 */
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42
43 /*
44 * Definitions for accessing IDE controller registers
45 */
46 #define IDE_NR_PORTS (10)
47
48 struct ide_io_ports {
49 unsigned long data_addr;
50
51 union {
52 unsigned long error_addr; /* read: error */
53 unsigned long feature_addr; /* write: feature */
54 };
55
56 unsigned long nsect_addr;
57 unsigned long lbal_addr;
58 unsigned long lbam_addr;
59 unsigned long lbah_addr;
60
61 unsigned long device_addr;
62
63 union {
64 unsigned long status_addr; /*  read: status  */
65 unsigned long command_addr; /* write: command */
66 };
67
68 unsigned long ctl_addr;
69
70 unsigned long irq_addr;
71 };
72
73 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
74
75 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
76 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
77 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
78 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
79
80 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
81
82 #define SATA_NR_PORTS (3) /* 16 possible ?? */
83
84 #define SATA_STATUS_OFFSET (0)
85 #define SATA_ERROR_OFFSET (1)
86 #define SATA_CONTROL_OFFSET (2)
87
88 /*
89 * Our Physical Region Descriptor (PRD) table should be large enough
90 * to handle the biggest I/O request we are likely to see. Since requests
91 * can have no more than 256 sectors, and since the typical blocksize is
92 * two or more sectors, we could get by with a limit of 128 entries here for
93 * the usual worst case. Most requests seem to include some contiguous blocks,
94 * further reducing the number of table entries required.
95 *
96 * The driver reverts to PIO mode for individual requests that exceed
97 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
98 * 100% of all crazy scenarios here is not necessary.
99 *
100 * As it turns out though, we must allocate a full 4KB page for this,
101 * so the two PRD tables (ide0 & ide1) will each get half of that,
102 * allowing each to have about 256 entries (8 bytes each) from this.
103 */
104 #define PRD_BYTES 8
105 #define PRD_ENTRIES 256
106
107 /*
108 * Some more useful definitions
109 */
110 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
111 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
112 #define SECTOR_SIZE 512
113
114 /*
115 * Timeouts for various operations:
116 */
117 enum {
118 /* spec allows up to 20ms */
119 WAIT_DRQ = HZ / 10, /* 100ms */
120 /* some laptops are very slow */
121 WAIT_READY = 5 * HZ, /* 5s */
122 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
123 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
124 /* worst case when spinning up */
125 WAIT_WORSTCASE = 30 * HZ, /* 30s */
126 /* maximum wait for an IRQ to happen */
127 WAIT_CMD = 10 * HZ, /* 10s */
128 /* Some drives require a longer IRQ timeout. */
129 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
130 /*
131 * Some drives (for example, Seagate STT3401A Travan) require a very
132 * long timeout, because they don't return an interrupt or clear their
133 * BSY bit until after the command completes (even retension commands).
134 */
135 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
136 /* minimum sleep time */
137 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
138 };
139
140 /*
141 * Op codes for special requests to be handled by ide_special_rq().
142 * Values should be in the range of 0x20 to 0x3f.
143 */
144 #define REQ_DRIVE_RESET 0x20
145 #define REQ_DEVSET_EXEC 0x21
146 #define REQ_PARK_HEADS 0x22
147 #define REQ_UNPARK_HEADS 0x23
148
149 /*
150 * Check for an interrupt and acknowledge the interrupt status
151 */
152 struct hwif_s;
153 typedef int (ide_ack_intr_t)(struct hwif_s *);
154
155 /*
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
158 */
159 enum { ide_unknown, ide_generic, ide_pci,
160 ide_cmd640, ide_dtc2278, ide_ali14xx,
161 ide_qd65xx, ide_umc8672, ide_ht6560b,
162 ide_4drives, ide_pmac, ide_acorn,
163 ide_au1xxx, ide_palm3710
164 };
165
166 typedef u8 hwif_chipset_t;
167
168 /*
169 * Structure to hold all information about the location of this port
170 */
171 typedef struct hw_regs_s {
172 union {
173 struct ide_io_ports io_ports;
174 unsigned long io_ports_array[IDE_NR_PORTS];
175 };
176
177 int irq; /* our irq number */
178 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
179 hwif_chipset_t chipset;
180 struct device *dev, *parent;
181 unsigned long config;
182 } hw_regs_t;
183
184 static inline void ide_std_init_ports(hw_regs_t *hw,
185 unsigned long io_addr,
186 unsigned long ctl_addr)
187 {
188 unsigned int i;
189
190 for (i = 0; i <= 7; i++)
191 hw->io_ports_array[i] = io_addr++;
192
193 hw->io_ports.ctl_addr = ctl_addr;
194 }
195
196 /* for IDE PCI controllers in legacy mode, temporary */
197 static inline int __ide_default_irq(unsigned long base)
198 {
199 switch (base) {
200 #ifdef CONFIG_IA64
201 case 0x1f0: return isa_irq_to_vector(14);
202 case 0x170: return isa_irq_to_vector(15);
203 #else
204 case 0x1f0: return 14;
205 case 0x170: return 15;
206 #endif
207 }
208 return 0;
209 }
210
211 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
212 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
213 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
214 #include <asm/ide.h>
215 #else
216 #include <asm-generic/ide_iops.h>
217 #endif
218
219 #define MAX_HWIFS 10
220
221 /* Currently only m68k, apus and m8xx need it */
222 #ifndef IDE_ARCH_ACK_INTR
223 # define ide_ack_intr(hwif) (1)
224 #endif
225
226 /* Currently only Atari needs it */
227 #ifndef IDE_ARCH_LOCK
228 # define ide_release_lock() do {} while (0)
229 # define ide_get_lock(hdlr, data) do {} while (0)
230 #endif /* IDE_ARCH_LOCK */
231
232 /*
233 * Now for the data we need to maintain per-drive: ide_drive_t
234 */
235
236 #define ide_scsi 0x21
237 #define ide_disk 0x20
238 #define ide_optical 0x7
239 #define ide_cdrom 0x5
240 #define ide_tape 0x1
241 #define ide_floppy 0x0
242
243 /*
244 * Special Driver Flags
245 *
246 * set_geometry : respecify drive geometry
247 * recalibrate : seek to cyl 0
248 * set_multmode : set multmode count
249 * reserved : unused
250 */
251 typedef union {
252 unsigned all : 8;
253 struct {
254 unsigned set_geometry : 1;
255 unsigned recalibrate : 1;
256 unsigned set_multmode : 1;
257 unsigned reserved : 5;
258 } b;
259 } special_t;
260
261 /*
262 * Status returned from various ide_ functions
263 */
264 typedef enum {
265 ide_stopped, /* no drive operation was started */
266 ide_started, /* a drive operation was started, handler was set */
267 } ide_startstop_t;
268
269 enum {
270 IDE_TFLAG_LBA48 = (1 << 0),
271 IDE_TFLAG_FLAGGED = (1 << 2),
272 IDE_TFLAG_OUT_DATA = (1 << 3),
273 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
274 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
275 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
276 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
277 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
278 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
279 IDE_TFLAG_OUT_HOB_NSECT |
280 IDE_TFLAG_OUT_HOB_LBAL |
281 IDE_TFLAG_OUT_HOB_LBAM |
282 IDE_TFLAG_OUT_HOB_LBAH,
283 IDE_TFLAG_OUT_FEATURE = (1 << 9),
284 IDE_TFLAG_OUT_NSECT = (1 << 10),
285 IDE_TFLAG_OUT_LBAL = (1 << 11),
286 IDE_TFLAG_OUT_LBAM = (1 << 12),
287 IDE_TFLAG_OUT_LBAH = (1 << 13),
288 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
289 IDE_TFLAG_OUT_NSECT |
290 IDE_TFLAG_OUT_LBAL |
291 IDE_TFLAG_OUT_LBAM |
292 IDE_TFLAG_OUT_LBAH,
293 IDE_TFLAG_OUT_DEVICE = (1 << 14),
294 IDE_TFLAG_WRITE = (1 << 15),
295 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
296 IDE_TFLAG_IN_DATA = (1 << 17),
297 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
298 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
299 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
300 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
301 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
302 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
303 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
304 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
305 IDE_TFLAG_IN_HOB_LBAM |
306 IDE_TFLAG_IN_HOB_LBAH,
307 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
308 IDE_TFLAG_IN_HOB_NSECT |
309 IDE_TFLAG_IN_HOB_LBA,
310 IDE_TFLAG_IN_FEATURE = (1 << 1),
311 IDE_TFLAG_IN_NSECT = (1 << 25),
312 IDE_TFLAG_IN_LBAL = (1 << 26),
313 IDE_TFLAG_IN_LBAM = (1 << 27),
314 IDE_TFLAG_IN_LBAH = (1 << 28),
315 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
316 IDE_TFLAG_IN_LBAM |
317 IDE_TFLAG_IN_LBAH,
318 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
319 IDE_TFLAG_IN_LBA,
320 IDE_TFLAG_IN_DEVICE = (1 << 29),
321 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
322 IDE_TFLAG_IN_HOB,
323 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
324 IDE_TFLAG_IN_TF,
325 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
326 IDE_TFLAG_IN_DEVICE,
327 /* force 16-bit I/O operations */
328 IDE_TFLAG_IO_16BIT = (1 << 30),
329 /* ide_task_t was allocated using kmalloc() */
330 IDE_TFLAG_DYN = (1 << 31),
331 };
332
333 struct ide_taskfile {
334 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
335
336 u8 hob_feature; /* 1-5: additional data to support LBA48 */
337 u8 hob_nsect;
338 u8 hob_lbal;
339 u8 hob_lbam;
340 u8 hob_lbah;
341
342 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
343
344 union { /*  7: */
345 u8 error; /* read: error */
346 u8 feature; /* write: feature */
347 };
348
349 u8 nsect; /* 8: number of sectors */
350 u8 lbal; /* 9: LBA low */
351 u8 lbam; /* 10: LBA mid */
352 u8 lbah; /* 11: LBA high */
353
354 u8 device; /* 12: device select */
355
356 union { /* 13: */
357 u8 status; /*  read: status  */
358 u8 command; /* write: command */
359 };
360 };
361
362 typedef struct ide_task_s {
363 union {
364 struct ide_taskfile tf;
365 u8 tf_array[14];
366 };
367 u32 tf_flags;
368 int data_phase;
369 struct request *rq; /* copy of request */
370 void *special; /* valid_t generally */
371 } ide_task_t;
372
373 /* ATAPI packet command flags */
374 enum {
375 /* set when an error is considered normal - no retry (ide-tape) */
376 PC_FLAG_ABORT = (1 << 0),
377 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
378 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
379 PC_FLAG_DMA_OK = (1 << 3),
380 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
381 PC_FLAG_DMA_ERROR = (1 << 5),
382 PC_FLAG_WRITING = (1 << 6),
383 /* command timed out */
384 PC_FLAG_TIMEDOUT = (1 << 7),
385 };
386
387 /*
388 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
389 * This is used for several packet commands (not for READ/WRITE commands).
390 */
391 #define IDE_PC_BUFFER_SIZE 256
392 #define ATAPI_WAIT_PC (60 * HZ)
393
394 struct ide_atapi_pc {
395 /* actual packet bytes */
396 u8 c[12];
397 /* incremented on each retry */
398 int retries;
399 int error;
400
401 /* bytes to transfer */
402 int req_xfer;
403 /* bytes actually transferred */
404 int xferred;
405
406 /* data buffer */
407 u8 *buf;
408 /* current buffer position */
409 u8 *cur_pos;
410 int buf_size;
411 /* missing/available data on the current buffer */
412 int b_count;
413
414 /* the corresponding request */
415 struct request *rq;
416
417 unsigned long flags;
418
419 /*
420 * those are more or less driver-specific and some of them are subject
421 * to change/removal later.
422 */
423 u8 pc_buf[IDE_PC_BUFFER_SIZE];
424
425 /* idetape only */
426 struct idetape_bh *bh;
427 char *b_data;
428
429 struct scatterlist *sg;
430 unsigned int sg_cnt;
431
432 unsigned long timeout;
433 };
434
435 struct ide_devset;
436 struct ide_driver;
437
438 #ifdef CONFIG_BLK_DEV_IDEACPI
439 struct ide_acpi_drive_link;
440 struct ide_acpi_hwif_link;
441 #endif
442
443 struct ide_drive_s;
444
445 struct ide_disk_ops {
446 int (*check)(struct ide_drive_s *, const char *);
447 int (*get_capacity)(struct ide_drive_s *);
448 void (*setup)(struct ide_drive_s *);
449 void (*flush)(struct ide_drive_s *);
450 int (*init_media)(struct ide_drive_s *, struct gendisk *);
451 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
452 int);
453 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
454 sector_t);
455 int (*end_request)(struct ide_drive_s *, int, int);
456 int (*ioctl)(struct ide_drive_s *, struct block_device *,
457 fmode_t, unsigned int, unsigned long);
458 };
459
460 /* ATAPI device flags */
461 enum {
462 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
463
464 /* ide-cd */
465 /* Drive cannot eject the disc. */
466 IDE_AFLAG_NO_EJECT = (1 << 1),
467 /* Drive is a pre ATAPI 1.2 drive. */
468 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
469 /* TOC addresses are in BCD. */
470 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
471 /* TOC track numbers are in BCD. */
472 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
473 /*
474 * Drive does not provide data in multiples of SECTOR_SIZE
475 * when more than one interrupt is needed.
476 */
477 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
478 /* Saved TOC information is current. */
479 IDE_AFLAG_TOC_VALID = (1 << 6),
480 /* We think that the drive door is locked. */
481 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
482 /* SET_CD_SPEED command is unsupported. */
483 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
484 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
485 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
486 IDE_AFLAG_SANYO_3CD = (1 << 11),
487 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
488 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
489 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
490
491 /* ide-floppy */
492 /* Avoid commands not supported in Clik drive */
493 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
494 /* Requires BH algorithm for packets */
495 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
496 /* Supports format progress report */
497 IDE_AFLAG_SRFP = (1 << 17),
498
499 /* ide-tape */
500 IDE_AFLAG_IGNORE_DSC = (1 << 18),
501 /* 0 When the tape position is unknown */
502 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
503 /* Device already opened */
504 IDE_AFLAG_BUSY = (1 << 20),
505 /* Attempt to auto-detect the current user block size */
506 IDE_AFLAG_DETECT_BS = (1 << 21),
507 /* Currently on a filemark */
508 IDE_AFLAG_FILEMARK = (1 << 22),
509 /* 0 = no tape is loaded, so we don't rewind after ejecting */
510 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
511
512 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
513 };
514
515 /* device flags */
516 enum {
517 /* restore settings after device reset */
518 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
519 /* device is using DMA for read/write */
520 IDE_DFLAG_USING_DMA = (1 << 1),
521 /* okay to unmask other IRQs */
522 IDE_DFLAG_UNMASK = (1 << 2),
523 /* don't attempt flushes */
524 IDE_DFLAG_NOFLUSH = (1 << 3),
525 /* DSC overlap */
526 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
527 /* give potential excess bandwidth */
528 IDE_DFLAG_NICE1 = (1 << 5),
529 /* device is physically present */
530 IDE_DFLAG_PRESENT = (1 << 6),
531 /* device ejected hint */
532 IDE_DFLAG_DEAD = (1 << 7),
533 /* id read from device (synthetic if not set) */
534 IDE_DFLAG_ID_READ = (1 << 8),
535 IDE_DFLAG_NOPROBE = (1 << 9),
536 /* need to do check_media_change() */
537 IDE_DFLAG_REMOVABLE = (1 << 10),
538 /* needed for removable devices */
539 IDE_DFLAG_ATTACH = (1 << 11),
540 IDE_DFLAG_FORCED_GEOM = (1 << 12),
541 /* disallow setting unmask bit */
542 IDE_DFLAG_NO_UNMASK = (1 << 13),
543 /* disallow enabling 32-bit I/O */
544 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
545 /* for removable only: door lock/unlock works */
546 IDE_DFLAG_DOORLOCKING = (1 << 15),
547 /* disallow DMA */
548 IDE_DFLAG_NODMA = (1 << 16),
549 /* powermanagment told us not to do anything, so sleep nicely */
550 IDE_DFLAG_BLOCKED = (1 << 17),
551 /* sleeping & sleep field valid */
552 IDE_DFLAG_SLEEPING = (1 << 18),
553 IDE_DFLAG_POST_RESET = (1 << 19),
554 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
555 IDE_DFLAG_LBA48 = (1 << 21),
556 /* status of write cache */
557 IDE_DFLAG_WCACHE = (1 << 22),
558 /* used for ignoring ATA_DF */
559 IDE_DFLAG_NOWERR = (1 << 23),
560 /* retrying in PIO */
561 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
562 IDE_DFLAG_LBA = (1 << 25),
563 /* don't unload heads */
564 IDE_DFLAG_NO_UNLOAD = (1 << 26),
565 /* heads unloaded, please don't reset port */
566 IDE_DFLAG_PARKED = (1 << 27),
567 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
568 /* write protect */
569 IDE_DFLAG_WP = (1 << 29),
570 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
571 };
572
573 struct ide_drive_s {
574 char name[4]; /* drive name, such as "hda" */
575 char driver_req[10]; /* requests specific driver */
576
577 struct request_queue *queue; /* request queue */
578
579 struct request *rq; /* current request */
580 void *driver_data; /* extra driver data */
581 u16 *id; /* identification info */
582 #ifdef CONFIG_IDE_PROC_FS
583 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
584 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
585 #endif
586 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
587
588 const struct ide_disk_ops *disk_ops;
589
590 unsigned long dev_flags;
591
592 unsigned long sleep; /* sleep until this time */
593 unsigned long timeout; /* max time to wait for irq */
594
595 special_t special; /* special action flags */
596
597 u8 select; /* basic drive/head select reg value */
598 u8 retry_pio; /* retrying dma capable host in pio */
599 u8 waiting_for_dma; /* dma currently in progress */
600 u8 dma; /* atapi dma flag */
601
602 u8 quirk_list; /* considered quirky, set for a specific host */
603 u8 init_speed; /* transfer rate set at boot */
604 u8 current_speed; /* current transfer rate set */
605 u8 desired_speed; /* desired transfer rate set */
606 u8 dn; /* now wide spread use */
607 u8 acoustic; /* acoustic management */
608 u8 media; /* disk, cdrom, tape, floppy, ... */
609 u8 ready_stat; /* min status value for drive ready */
610 u8 mult_count; /* current multiple sector setting */
611 u8 mult_req; /* requested multiple sector setting */
612 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
613 u8 bad_wstat; /* used for ignoring ATA_DF */
614 u8 head; /* "real" number of heads */
615 u8 sect; /* "real" sectors per track */
616 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
617 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
618
619 /* delay this long before sending packet command */
620 u8 pc_delay;
621
622 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
623 unsigned int cyl; /* "real" number of cyls */
624 unsigned int drive_data; /* used by set_pio_mode/selectproc */
625 unsigned int failures; /* current failure count */
626 unsigned int max_failures; /* maximum allowed failure count */
627 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
628
629 u64 capacity64; /* total number of sectors */
630
631 int lun; /* logical unit */
632 int crc_count; /* crc counter to reduce drive speed */
633
634 unsigned long debug_mask; /* debugging levels switch */
635
636 #ifdef CONFIG_BLK_DEV_IDEACPI
637 struct ide_acpi_drive_link *acpidata;
638 #endif
639 struct list_head list;
640 struct device gendev;
641 struct completion gendev_rel_comp; /* to deal with device release() */
642
643 /* current packet command */
644 struct ide_atapi_pc *pc;
645
646 /* callback for packet commands */
647 void (*pc_callback)(struct ide_drive_s *, int);
648
649 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
650 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
651 unsigned int, int);
652
653 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
654
655 unsigned long atapi_flags;
656
657 struct ide_atapi_pc request_sense_pc;
658 struct request request_sense_rq;
659 };
660
661 typedef struct ide_drive_s ide_drive_t;
662
663 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
664
665 #define to_ide_drv(obj, cont_type) \
666 container_of(obj, struct cont_type, dev)
667
668 #define ide_drv_g(disk, cont_type) \
669 container_of((disk)->private_data, struct cont_type, driver)
670
671 struct ide_port_info;
672
673 struct ide_tp_ops {
674 void (*exec_command)(struct hwif_s *, u8);
675 u8 (*read_status)(struct hwif_s *);
676 u8 (*read_altstatus)(struct hwif_s *);
677
678 void (*set_irq)(struct hwif_s *, int);
679
680 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
681 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
682
683 void (*input_data)(ide_drive_t *, struct request *, void *,
684 unsigned int);
685 void (*output_data)(ide_drive_t *, struct request *, void *,
686 unsigned int);
687 };
688
689 extern const struct ide_tp_ops default_tp_ops;
690
691 /**
692 * struct ide_port_ops - IDE port operations
693 *
694 * @init_dev: host specific initialization of a device
695 * @set_pio_mode: routine to program host for PIO mode
696 * @set_dma_mode: routine to program host for DMA mode
697 * @selectproc: tweaks hardware to select drive
698 * @reset_poll: chipset polling based on hba specifics
699 * @pre_reset: chipset specific changes to default for device-hba resets
700 * @resetproc: routine to reset controller after a disk reset
701 * @maskproc: special host masking for drive selection
702 * @quirkproc: check host's drive quirk list
703 * @clear_irq: clear IRQ
704 *
705 * @mdma_filter: filter MDMA modes
706 * @udma_filter: filter UDMA modes
707 *
708 * @cable_detect: detect cable type
709 */
710 struct ide_port_ops {
711 void (*init_dev)(ide_drive_t *);
712 void (*set_pio_mode)(ide_drive_t *, const u8);
713 void (*set_dma_mode)(ide_drive_t *, const u8);
714 void (*selectproc)(ide_drive_t *);
715 int (*reset_poll)(ide_drive_t *);
716 void (*pre_reset)(ide_drive_t *);
717 void (*resetproc)(ide_drive_t *);
718 void (*maskproc)(ide_drive_t *, int);
719 void (*quirkproc)(ide_drive_t *);
720 void (*clear_irq)(ide_drive_t *);
721
722 u8 (*mdma_filter)(ide_drive_t *);
723 u8 (*udma_filter)(ide_drive_t *);
724
725 u8 (*cable_detect)(struct hwif_s *);
726 };
727
728 struct ide_dma_ops {
729 void (*dma_host_set)(struct ide_drive_s *, int);
730 int (*dma_setup)(struct ide_drive_s *);
731 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
732 void (*dma_start)(struct ide_drive_s *);
733 int (*dma_end)(struct ide_drive_s *);
734 int (*dma_test_irq)(struct ide_drive_s *);
735 void (*dma_lost_irq)(struct ide_drive_s *);
736 void (*dma_timeout)(struct ide_drive_s *);
737 /*
738 * The following method is optional and only required to be
739 * implemented for the SFF-8038i compatible controllers.
740 */
741 u8 (*dma_sff_read_status)(struct hwif_s *);
742 };
743
744 struct ide_host;
745
746 typedef struct hwif_s {
747 struct hwif_s *mate; /* other hwif from same PCI chip */
748 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
749
750 struct ide_host *host;
751
752 char name[6]; /* name of interface, eg. "ide0" */
753
754 struct ide_io_ports io_ports;
755
756 unsigned long sata_scr[SATA_NR_PORTS];
757
758 ide_drive_t *devices[MAX_DRIVES + 1];
759
760 u8 major; /* our major number */
761 u8 index; /* 0 for ide0; 1 for ide1; ... */
762 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
763
764 u32 host_flags;
765
766 u8 pio_mask;
767
768 u8 ultra_mask;
769 u8 mwdma_mask;
770 u8 swdma_mask;
771
772 u8 cbl; /* cable type */
773
774 hwif_chipset_t chipset; /* sub-module for tuning.. */
775
776 struct device *dev;
777
778 ide_ack_intr_t *ack_intr;
779
780 void (*rw_disk)(ide_drive_t *, struct request *);
781
782 const struct ide_tp_ops *tp_ops;
783 const struct ide_port_ops *port_ops;
784 const struct ide_dma_ops *dma_ops;
785
786 /* dma physical region descriptor table (cpu view) */
787 unsigned int *dmatable_cpu;
788 /* dma physical region descriptor table (dma view) */
789 dma_addr_t dmatable_dma;
790
791 /* maximum number of PRD table entries */
792 int prd_max_nents;
793 /* PRD entry size in bytes */
794 int prd_ent_size;
795
796 /* Scatter-gather list used to build the above */
797 struct scatterlist *sg_table;
798 int sg_max_nents; /* Maximum number of entries in it */
799 int sg_nents; /* Current number of entries in it */
800 int orig_sg_nents;
801 int sg_dma_direction; /* dma transfer direction */
802
803 /* data phase of the active command (currently only valid for PIO/DMA) */
804 int data_phase;
805
806 struct ide_task_s task; /* current command */
807
808 unsigned int nsect;
809 unsigned int nleft;
810 struct scatterlist *cursg;
811 unsigned int cursg_ofs;
812
813 int rqsize; /* max sectors per request */
814 int irq; /* our irq number */
815
816 unsigned long dma_base; /* base addr for dma ports */
817
818 unsigned long config_data; /* for use by chipset-specific code */
819 unsigned long select_data; /* for use by chipset-specific code */
820
821 unsigned long extra_base; /* extra addr for dma ports */
822 unsigned extra_ports; /* number of extra dma ports */
823
824 unsigned present : 1; /* this interface exists */
825 unsigned busy : 1; /* serializes devices on a port */
826
827 struct device gendev;
828 struct device *portdev;
829
830 struct completion gendev_rel_comp; /* To deal with device release() */
831
832 void *hwif_data; /* extra hwif data */
833
834 #ifdef CONFIG_BLK_DEV_IDEACPI
835 struct ide_acpi_hwif_link *acpidata;
836 #endif
837
838 /* IRQ handler, if active */
839 ide_startstop_t (*handler)(ide_drive_t *);
840
841 /* BOOL: polling active & poll_timeout field valid */
842 unsigned int polling : 1;
843
844 /* current drive */
845 ide_drive_t *cur_dev;
846
847 /* current request */
848 struct request *rq;
849
850 /* failsafe timer */
851 struct timer_list timer;
852 /* timeout value during long polls */
853 unsigned long poll_timeout;
854 /* queried upon timeouts */
855 int (*expiry)(ide_drive_t *);
856
857 int req_gen;
858 int req_gen_timer;
859
860 spinlock_t lock;
861 } ____cacheline_internodealigned_in_smp ide_hwif_t;
862
863 #define MAX_HOST_PORTS 4
864
865 struct ide_host {
866 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
867 unsigned int n_ports;
868 struct device *dev[2];
869 unsigned int (*init_chipset)(struct pci_dev *);
870 irq_handler_t irq_handler;
871 unsigned long host_flags;
872 void *host_priv;
873 ide_hwif_t *cur_port; /* for hosts requiring serialization */
874
875 /* used for hosts requiring serialization */
876 volatile unsigned long host_busy;
877 };
878
879 #define IDE_HOST_BUSY 0
880
881 /*
882 * internal ide interrupt handler type
883 */
884 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
885 typedef int (ide_expiry_t)(ide_drive_t *);
886
887 /* used by ide-cd, ide-floppy, etc. */
888 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
889
890 extern struct mutex ide_setting_mtx;
891
892 /*
893 * configurable drive settings
894 */
895
896 #define DS_SYNC (1 << 0)
897
898 struct ide_devset {
899 int (*get)(ide_drive_t *);
900 int (*set)(ide_drive_t *, int);
901 unsigned int flags;
902 };
903
904 #define __DEVSET(_flags, _get, _set) { \
905 .flags = _flags, \
906 .get = _get, \
907 .set = _set, \
908 }
909
910 #define ide_devset_get(name, field) \
911 static int get_##name(ide_drive_t *drive) \
912 { \
913 return drive->field; \
914 }
915
916 #define ide_devset_set(name, field) \
917 static int set_##name(ide_drive_t *drive, int arg) \
918 { \
919 drive->field = arg; \
920 return 0; \
921 }
922
923 #define ide_devset_get_flag(name, flag) \
924 static int get_##name(ide_drive_t *drive) \
925 { \
926 return !!(drive->dev_flags & flag); \
927 }
928
929 #define ide_devset_set_flag(name, flag) \
930 static int set_##name(ide_drive_t *drive, int arg) \
931 { \
932 if (arg) \
933 drive->dev_flags |= flag; \
934 else \
935 drive->dev_flags &= ~flag; \
936 return 0; \
937 }
938
939 #define __IDE_DEVSET(_name, _flags, _get, _set) \
940 const struct ide_devset ide_devset_##_name = \
941 __DEVSET(_flags, _get, _set)
942
943 #define IDE_DEVSET(_name, _flags, _get, _set) \
944 static __IDE_DEVSET(_name, _flags, _get, _set)
945
946 #define ide_devset_rw(_name, _func) \
947 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
948
949 #define ide_devset_w(_name, _func) \
950 IDE_DEVSET(_name, 0, NULL, set_##_func)
951
952 #define ide_ext_devset_rw(_name, _func) \
953 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
954
955 #define ide_ext_devset_rw_sync(_name, _func) \
956 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
957
958 #define ide_decl_devset(_name) \
959 extern const struct ide_devset ide_devset_##_name
960
961 ide_decl_devset(io_32bit);
962 ide_decl_devset(keepsettings);
963 ide_decl_devset(pio_mode);
964 ide_decl_devset(unmaskirq);
965 ide_decl_devset(using_dma);
966
967 #ifdef CONFIG_IDE_PROC_FS
968 /*
969 * /proc/ide interface
970 */
971
972 #define ide_devset_rw_field(_name, _field) \
973 ide_devset_get(_name, _field); \
974 ide_devset_set(_name, _field); \
975 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
976
977 #define ide_devset_rw_flag(_name, _field) \
978 ide_devset_get_flag(_name, _field); \
979 ide_devset_set_flag(_name, _field); \
980 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
981
982 struct ide_proc_devset {
983 const char *name;
984 const struct ide_devset *setting;
985 int min, max;
986 int (*mulf)(ide_drive_t *);
987 int (*divf)(ide_drive_t *);
988 };
989
990 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
991 .name = __stringify(_name), \
992 .setting = &ide_devset_##_name, \
993 .min = _min, \
994 .max = _max, \
995 .mulf = _mulf, \
996 .divf = _divf, \
997 }
998
999 #define IDE_PROC_DEVSET(_name, _min, _max) \
1000 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1001
1002 typedef struct {
1003 const char *name;
1004 mode_t mode;
1005 read_proc_t *read_proc;
1006 write_proc_t *write_proc;
1007 } ide_proc_entry_t;
1008
1009 void proc_ide_create(void);
1010 void proc_ide_destroy(void);
1011 void ide_proc_register_port(ide_hwif_t *);
1012 void ide_proc_port_register_devices(ide_hwif_t *);
1013 void ide_proc_unregister_device(ide_drive_t *);
1014 void ide_proc_unregister_port(ide_hwif_t *);
1015 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
1016 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
1017
1018 read_proc_t proc_ide_read_capacity;
1019 read_proc_t proc_ide_read_geometry;
1020
1021 /*
1022 * Standard exit stuff:
1023 */
1024 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1025 { \
1026 len -= off; \
1027 if (len < count) { \
1028 *eof = 1; \
1029 if (len <= 0) \
1030 return 0; \
1031 } else \
1032 len = count; \
1033 *start = page + off; \
1034 return len; \
1035 }
1036 #else
1037 static inline void proc_ide_create(void) { ; }
1038 static inline void proc_ide_destroy(void) { ; }
1039 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1040 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1041 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1042 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1043 static inline void ide_proc_register_driver(ide_drive_t *drive,
1044 struct ide_driver *driver) { ; }
1045 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1046 struct ide_driver *driver) { ; }
1047 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1048 #endif
1049
1050 enum {
1051 /* enter/exit functions */
1052 IDE_DBG_FUNC = (1 << 0),
1053 /* sense key/asc handling */
1054 IDE_DBG_SENSE = (1 << 1),
1055 /* packet commands handling */
1056 IDE_DBG_PC = (1 << 2),
1057 /* request handling */
1058 IDE_DBG_RQ = (1 << 3),
1059 /* driver probing/setup */
1060 IDE_DBG_PROBE = (1 << 4),
1061 };
1062
1063 /* DRV_NAME has to be defined in the driver before using the macro below */
1064 #define __ide_debug_log(lvl, fmt, args...) \
1065 { \
1066 if (unlikely(drive->debug_mask & lvl)) \
1067 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1068 }
1069
1070 /*
1071 * Power Management state machine (rq->pm->pm_step).
1072 *
1073 * For each step, the core calls ide_start_power_step() first.
1074 * This can return:
1075 * - ide_stopped : In this case, the core calls us back again unless
1076 * step have been set to ide_power_state_completed.
1077 * - ide_started : In this case, the channel is left busy until an
1078 * async event (interrupt) occurs.
1079 * Typically, ide_start_power_step() will issue a taskfile request with
1080 * do_rw_taskfile().
1081 *
1082 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1083 * with the error code if any. This routine should update the step value
1084 * and return. It should not start a new request. The core will call
1085 * ide_start_power_step() for the new step value, unless step have been
1086 * set to IDE_PM_COMPLETED.
1087 */
1088 enum {
1089 IDE_PM_START_SUSPEND,
1090 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1091 IDE_PM_STANDBY,
1092
1093 IDE_PM_START_RESUME,
1094 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1095 IDE_PM_IDLE,
1096 IDE_PM_RESTORE_DMA,
1097
1098 IDE_PM_COMPLETED,
1099 };
1100
1101 int generic_ide_suspend(struct device *, pm_message_t);
1102 int generic_ide_resume(struct device *);
1103
1104 void ide_complete_power_step(ide_drive_t *, struct request *);
1105 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1106 void ide_complete_pm_request(ide_drive_t *, struct request *);
1107 void ide_check_pm_state(ide_drive_t *, struct request *);
1108
1109 /*
1110 * Subdrivers support.
1111 *
1112 * The gendriver.owner field should be set to the module owner of this driver.
1113 * The gendriver.name field should be set to the name of this driver
1114 */
1115 struct ide_driver {
1116 const char *version;
1117 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1118 int (*end_request)(ide_drive_t *, int, int);
1119 struct device_driver gen_driver;
1120 int (*probe)(ide_drive_t *);
1121 void (*remove)(ide_drive_t *);
1122 void (*resume)(ide_drive_t *);
1123 void (*shutdown)(ide_drive_t *);
1124 #ifdef CONFIG_IDE_PROC_FS
1125 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1126 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1127 #endif
1128 };
1129
1130 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1131
1132 int ide_device_get(ide_drive_t *);
1133 void ide_device_put(ide_drive_t *);
1134
1135 struct ide_ioctl_devset {
1136 unsigned int get_ioctl;
1137 unsigned int set_ioctl;
1138 const struct ide_devset *setting;
1139 };
1140
1141 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1142 unsigned long, const struct ide_ioctl_devset *);
1143
1144 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1145
1146 extern int ide_vlb_clk;
1147 extern int ide_pci_clk;
1148
1149 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1150 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1151 int uptodate, int nr_sectors);
1152
1153 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1154
1155 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1156 ide_expiry_t *);
1157
1158 void ide_execute_pkt_cmd(ide_drive_t *);
1159
1160 void ide_pad_transfer(ide_drive_t *, int, int);
1161
1162 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1163
1164 void ide_fix_driveid(u16 *);
1165
1166 extern void ide_fixstring(u8 *, const int, const int);
1167
1168 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1169
1170 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1171
1172 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1173
1174 extern int ide_devset_execute(ide_drive_t *drive,
1175 const struct ide_devset *setting, int arg);
1176
1177 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1178
1179 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1180
1181 void ide_tf_dump(const char *, struct ide_taskfile *);
1182
1183 void ide_exec_command(ide_hwif_t *, u8);
1184 u8 ide_read_status(ide_hwif_t *);
1185 u8 ide_read_altstatus(ide_hwif_t *);
1186
1187 void ide_set_irq(ide_hwif_t *, int);
1188
1189 void ide_tf_load(ide_drive_t *, ide_task_t *);
1190 void ide_tf_read(ide_drive_t *, ide_task_t *);
1191
1192 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1193 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1194
1195 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1196
1197 extern void SELECT_DRIVE(ide_drive_t *);
1198 void SELECT_MASK(ide_drive_t *, int);
1199
1200 u8 ide_read_error(ide_drive_t *);
1201 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1202
1203 extern int drive_is_ready(ide_drive_t *);
1204
1205 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1206
1207 int ide_check_atapi_device(ide_drive_t *, const char *);
1208
1209 void ide_init_pc(struct ide_atapi_pc *);
1210
1211 /* Disk head parking */
1212 extern wait_queue_head_t ide_park_wq;
1213 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1214 char *buf);
1215 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1216 const char *buf, size_t len);
1217
1218 /*
1219 * Special requests for ide-tape block device strategy routine.
1220 *
1221 * In order to service a character device command, we add special requests to
1222 * the tail of our block device request queue and wait for their completion.
1223 */
1224 enum {
1225 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1226 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1227 REQ_IDETAPE_READ = (1 << 2),
1228 REQ_IDETAPE_WRITE = (1 << 3),
1229 };
1230
1231 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1232
1233 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1234 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1235 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1236 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1237 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1238
1239 int ide_cd_expiry(ide_drive_t *);
1240
1241 int ide_cd_get_xferlen(struct request *);
1242
1243 ide_startstop_t ide_issue_pc(ide_drive_t *);
1244
1245 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1246
1247 void task_end_request(ide_drive_t *, struct request *, u8);
1248
1249 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1250 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1251
1252 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1253
1254 extern int ide_driveid_update(ide_drive_t *);
1255 extern int ide_config_drive_speed(ide_drive_t *, u8);
1256 extern u8 eighty_ninty_three (ide_drive_t *);
1257 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1258
1259 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1260
1261 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1262
1263 extern void ide_timer_expiry(unsigned long);
1264 extern irqreturn_t ide_intr(int irq, void *dev_id);
1265 extern void do_ide_request(struct request_queue *);
1266
1267 void ide_init_disk(struct gendisk *, ide_drive_t *);
1268
1269 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1270 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1271 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1272 #else
1273 #define ide_pci_register_driver(d) pci_register_driver(d)
1274 #endif
1275
1276 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1277 {
1278 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1279 return 1;
1280 return 0;
1281 }
1282
1283 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1284 hw_regs_t *, hw_regs_t **);
1285 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1286
1287 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1288 int ide_pci_set_master(struct pci_dev *, const char *);
1289 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1290 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1291 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1292 #else
1293 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1294 const struct ide_port_info *d)
1295 {
1296 return -EINVAL;
1297 }
1298 #endif
1299
1300 struct ide_pci_enablebit {
1301 u8 reg; /* byte pci reg holding the enable-bit */
1302 u8 mask; /* mask to isolate the enable-bit */
1303 u8 val; /* value of masked reg when "enabled" */
1304 };
1305
1306 enum {
1307 /* Uses ISA control ports not PCI ones. */
1308 IDE_HFLAG_ISA_PORTS = (1 << 0),
1309 /* single port device */
1310 IDE_HFLAG_SINGLE = (1 << 1),
1311 /* don't use legacy PIO blacklist */
1312 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1313 /* set for the second port of QD65xx */
1314 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1315 /* use PIO8/9 for prefetch off/on */
1316 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1317 /* use PIO6/7 for fast-devsel off/on */
1318 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1319 /* use 100-102 and 200-202 PIO values to set DMA modes */
1320 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1321 /*
1322 * keep DMA setting when programming PIO mode, may be used only
1323 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1324 */
1325 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1326 /* program host for the transfer mode after programming device */
1327 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1328 /* don't program host/device for the transfer mode ("smart" hosts) */
1329 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1330 /* trust BIOS for programming chipset/device for DMA */
1331 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1332 /* host is CS5510/CS5520 */
1333 IDE_HFLAG_CS5520 = (1 << 11),
1334 /* ATAPI DMA is unsupported */
1335 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1336 /* set if host is a "non-bootable" controller */
1337 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1338 /* host doesn't support DMA */
1339 IDE_HFLAG_NO_DMA = (1 << 14),
1340 /* check if host is PCI IDE device before allowing DMA */
1341 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1342 /* host uses MMIO */
1343 IDE_HFLAG_MMIO = (1 << 16),
1344 /* no LBA48 */
1345 IDE_HFLAG_NO_LBA48 = (1 << 17),
1346 /* no LBA48 DMA */
1347 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1348 /* data FIFO is cleared by an error */
1349 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1350 /* serialize ports */
1351 IDE_HFLAG_SERIALIZE = (1 << 20),
1352 /* use legacy IRQs */
1353 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1354 /* force use of legacy IRQs */
1355 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1356 /* host is TRM290 */
1357 IDE_HFLAG_TRM290 = (1 << 23),
1358 /* use 32-bit I/O ops */
1359 IDE_HFLAG_IO_32BIT = (1 << 24),
1360 /* unmask IRQs */
1361 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1362 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1363 /* serialize ports if DMA is possible (for sl82c105) */
1364 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1365 /* force host out of "simplex" mode */
1366 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1367 /* DSC overlap is unsupported */
1368 IDE_HFLAG_NO_DSC = (1 << 29),
1369 /* never use 32-bit I/O ops */
1370 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1371 /* never unmask IRQs */
1372 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1373 };
1374
1375 #ifdef CONFIG_BLK_DEV_OFFBOARD
1376 # define IDE_HFLAG_OFF_BOARD 0
1377 #else
1378 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1379 #endif
1380
1381 struct ide_port_info {
1382 char *name;
1383 unsigned int (*init_chipset)(struct pci_dev *);
1384 void (*init_iops)(ide_hwif_t *);
1385 void (*init_hwif)(ide_hwif_t *);
1386 int (*init_dma)(ide_hwif_t *,
1387 const struct ide_port_info *);
1388
1389 const struct ide_tp_ops *tp_ops;
1390 const struct ide_port_ops *port_ops;
1391 const struct ide_dma_ops *dma_ops;
1392
1393 struct ide_pci_enablebit enablebits[2];
1394
1395 hwif_chipset_t chipset;
1396
1397 u16 max_sectors; /* if < than the default one */
1398
1399 u32 host_flags;
1400 u8 pio_mask;
1401 u8 swdma_mask;
1402 u8 mwdma_mask;
1403 u8 udma_mask;
1404 };
1405
1406 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1407 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1408 const struct ide_port_info *, void *);
1409 void ide_pci_remove(struct pci_dev *);
1410
1411 #ifdef CONFIG_PM
1412 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1413 int ide_pci_resume(struct pci_dev *);
1414 #else
1415 #define ide_pci_suspend NULL
1416 #define ide_pci_resume NULL
1417 #endif
1418
1419 void ide_map_sg(ide_drive_t *, struct request *);
1420 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1421
1422 #define BAD_DMA_DRIVE 0
1423 #define GOOD_DMA_DRIVE 1
1424
1425 struct drive_list_entry {
1426 const char *id_model;
1427 const char *id_firmware;
1428 };
1429
1430 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1431
1432 #ifdef CONFIG_BLK_DEV_IDEDMA
1433 int ide_dma_good_drive(ide_drive_t *);
1434 int __ide_dma_bad_drive(ide_drive_t *);
1435 int ide_id_dma_bug(ide_drive_t *);
1436
1437 u8 ide_find_dma_mode(ide_drive_t *, u8);
1438
1439 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1440 {
1441 return ide_find_dma_mode(drive, XFER_UDMA_6);
1442 }
1443
1444 void ide_dma_off_quietly(ide_drive_t *);
1445 void ide_dma_off(ide_drive_t *);
1446 void ide_dma_on(ide_drive_t *);
1447 int ide_set_dma(ide_drive_t *);
1448 void ide_check_dma_crc(ide_drive_t *);
1449 ide_startstop_t ide_dma_intr(ide_drive_t *);
1450
1451 int ide_allocate_dma_engine(ide_hwif_t *);
1452 void ide_release_dma_engine(ide_hwif_t *);
1453
1454 int ide_build_sglist(ide_drive_t *, struct request *);
1455 void ide_destroy_dmatable(ide_drive_t *);
1456
1457 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1458 int config_drive_for_dma(ide_drive_t *);
1459 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1460 void ide_dma_host_set(ide_drive_t *, int);
1461 extern int ide_dma_setup(ide_drive_t *);
1462 void ide_dma_exec_cmd(ide_drive_t *, u8);
1463 extern void ide_dma_start(ide_drive_t *);
1464 int ide_dma_end(ide_drive_t *);
1465 int ide_dma_test_irq(ide_drive_t *);
1466 u8 ide_dma_sff_read_status(ide_hwif_t *);
1467 extern const struct ide_dma_ops sff_dma_ops;
1468 #else
1469 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1470 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1471
1472 void ide_dma_lost_irq(ide_drive_t *);
1473 void ide_dma_timeout(ide_drive_t *);
1474
1475 #else
1476 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1477 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1478 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1479 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1480 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1481 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1482 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1483 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1484 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1485 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1486 #endif /* CONFIG_BLK_DEV_IDEDMA */
1487
1488 #ifdef CONFIG_BLK_DEV_IDEACPI
1489 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1490 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1491 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1492 extern void ide_acpi_init(ide_hwif_t *hwif);
1493 void ide_acpi_port_init_devices(ide_hwif_t *);
1494 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1495 #else
1496 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1497 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1498 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1499 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1500 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1501 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1502 #endif
1503
1504 void ide_register_region(struct gendisk *);
1505 void ide_unregister_region(struct gendisk *);
1506
1507 void ide_undecoded_slave(ide_drive_t *);
1508
1509 void ide_port_apply_params(ide_hwif_t *);
1510 int ide_sysfs_register_port(ide_hwif_t *);
1511
1512 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1513 void ide_host_free(struct ide_host *);
1514 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1515 hw_regs_t **);
1516 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1517 struct ide_host **);
1518 void ide_host_remove(struct ide_host *);
1519 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1520 void ide_port_unregister_devices(ide_hwif_t *);
1521 void ide_port_scan(ide_hwif_t *);
1522
1523 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1524 {
1525 return hwif->hwif_data;
1526 }
1527
1528 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1529 {
1530 hwif->hwif_data = data;
1531 }
1532
1533 const char *ide_xfer_verbose(u8 mode);
1534 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1535 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1536
1537 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1538 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1539
1540 struct ide_timing {
1541 u8 mode;
1542 u8 setup; /* t1 */
1543 u16 act8b; /* t2 for 8-bit io */
1544 u16 rec8b; /* t2i for 8-bit io */
1545 u16 cyc8b; /* t0 for 8-bit io */
1546 u16 active; /* t2 or tD */
1547 u16 recover; /* t2i or tK */
1548 u16 cycle; /* t0 */
1549 u16 udma; /* t2CYCTYP/2 */
1550 };
1551
1552 enum {
1553 IDE_TIMING_SETUP = (1 << 0),
1554 IDE_TIMING_ACT8B = (1 << 1),
1555 IDE_TIMING_REC8B = (1 << 2),
1556 IDE_TIMING_CYC8B = (1 << 3),
1557 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1558 IDE_TIMING_CYC8B,
1559 IDE_TIMING_ACTIVE = (1 << 4),
1560 IDE_TIMING_RECOVER = (1 << 5),
1561 IDE_TIMING_CYCLE = (1 << 6),
1562 IDE_TIMING_UDMA = (1 << 7),
1563 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1564 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1565 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1566 };
1567
1568 struct ide_timing *ide_timing_find_mode(u8);
1569 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1570 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1571 struct ide_timing *, unsigned int);
1572 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1573
1574 int ide_scan_pio_blacklist(char *);
1575
1576 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1577
1578 int ide_set_pio_mode(ide_drive_t *, u8);
1579 int ide_set_dma_mode(ide_drive_t *, u8);
1580
1581 void ide_set_pio(ide_drive_t *, u8);
1582
1583 static inline void ide_set_max_pio(ide_drive_t *drive)
1584 {
1585 ide_set_pio(drive, 255);
1586 }
1587
1588 char *ide_media_string(ide_drive_t *);
1589
1590 extern struct device_attribute ide_dev_attrs[];
1591 extern struct bus_type ide_bus_type;
1592 extern struct class *ide_port_class;
1593
1594 static inline void ide_dump_identify(u8 *id)
1595 {
1596 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1597 }
1598
1599 static inline int hwif_to_node(ide_hwif_t *hwif)
1600 {
1601 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1602 }
1603
1604 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1605 {
1606 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1607
1608 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1609 }
1610
1611 #define ide_port_for_each_dev(i, dev, port) \
1612 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1613
1614 #define ide_host_for_each_port(i, port, host) \
1615 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1616
1617 #endif /* _IDE_H */
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