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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
[deliverable/linux.git] / include / linux / ide.h
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) || defined(CONFIG_MN10300)
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 #if defined(CONFIG_ARM) || defined(CONFIG_M68K) || defined(CONFIG_MIPS) || \
197 defined(CONFIG_PARISC) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
198 #include <asm/ide.h>
199 #else
200 #include <asm-generic/ide_iops.h>
201 #endif
202
203 #define MAX_HWIFS 10
204
205 /* Currently only m68k, apus and m8xx need it */
206 #ifndef IDE_ARCH_ACK_INTR
207 # define ide_ack_intr(hwif) (1)
208 #endif
209
210 /* Currently only Atari needs it */
211 #ifndef IDE_ARCH_LOCK
212 # define ide_release_lock() do {} while (0)
213 # define ide_get_lock(hdlr, data) do {} while (0)
214 #endif /* IDE_ARCH_LOCK */
215
216 /*
217 * Now for the data we need to maintain per-drive: ide_drive_t
218 */
219
220 #define ide_scsi 0x21
221 #define ide_disk 0x20
222 #define ide_optical 0x7
223 #define ide_cdrom 0x5
224 #define ide_tape 0x1
225 #define ide_floppy 0x0
226
227 /*
228 * Special Driver Flags
229 *
230 * set_geometry : respecify drive geometry
231 * recalibrate : seek to cyl 0
232 * set_multmode : set multmode count
233 * reserved : unused
234 */
235 typedef union {
236 unsigned all : 8;
237 struct {
238 unsigned set_geometry : 1;
239 unsigned recalibrate : 1;
240 unsigned set_multmode : 1;
241 unsigned reserved : 5;
242 } b;
243 } special_t;
244
245 /*
246 * Status returned from various ide_ functions
247 */
248 typedef enum {
249 ide_stopped, /* no drive operation was started */
250 ide_started, /* a drive operation was started, handler was set */
251 } ide_startstop_t;
252
253 enum {
254 IDE_TFLAG_LBA48 = (1 << 0),
255 IDE_TFLAG_FLAGGED = (1 << 2),
256 IDE_TFLAG_OUT_DATA = (1 << 3),
257 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
258 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
259 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
260 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
261 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
262 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
263 IDE_TFLAG_OUT_HOB_NSECT |
264 IDE_TFLAG_OUT_HOB_LBAL |
265 IDE_TFLAG_OUT_HOB_LBAM |
266 IDE_TFLAG_OUT_HOB_LBAH,
267 IDE_TFLAG_OUT_FEATURE = (1 << 9),
268 IDE_TFLAG_OUT_NSECT = (1 << 10),
269 IDE_TFLAG_OUT_LBAL = (1 << 11),
270 IDE_TFLAG_OUT_LBAM = (1 << 12),
271 IDE_TFLAG_OUT_LBAH = (1 << 13),
272 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
273 IDE_TFLAG_OUT_NSECT |
274 IDE_TFLAG_OUT_LBAL |
275 IDE_TFLAG_OUT_LBAM |
276 IDE_TFLAG_OUT_LBAH,
277 IDE_TFLAG_OUT_DEVICE = (1 << 14),
278 IDE_TFLAG_WRITE = (1 << 15),
279 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
280 IDE_TFLAG_IN_DATA = (1 << 17),
281 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
282 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
283 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
284 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
285 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
286 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
287 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
288 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
289 IDE_TFLAG_IN_HOB_LBAM |
290 IDE_TFLAG_IN_HOB_LBAH,
291 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
292 IDE_TFLAG_IN_HOB_NSECT |
293 IDE_TFLAG_IN_HOB_LBA,
294 IDE_TFLAG_IN_FEATURE = (1 << 1),
295 IDE_TFLAG_IN_NSECT = (1 << 25),
296 IDE_TFLAG_IN_LBAL = (1 << 26),
297 IDE_TFLAG_IN_LBAM = (1 << 27),
298 IDE_TFLAG_IN_LBAH = (1 << 28),
299 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
300 IDE_TFLAG_IN_LBAM |
301 IDE_TFLAG_IN_LBAH,
302 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
303 IDE_TFLAG_IN_LBA,
304 IDE_TFLAG_IN_DEVICE = (1 << 29),
305 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
306 IDE_TFLAG_IN_HOB,
307 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
308 IDE_TFLAG_IN_TF,
309 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
310 IDE_TFLAG_IN_DEVICE,
311 /* force 16-bit I/O operations */
312 IDE_TFLAG_IO_16BIT = (1 << 30),
313 /* ide_task_t was allocated using kmalloc() */
314 IDE_TFLAG_DYN = (1 << 31),
315 };
316
317 struct ide_taskfile {
318 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
319
320 u8 hob_feature; /* 1-5: additional data to support LBA48 */
321 u8 hob_nsect;
322 u8 hob_lbal;
323 u8 hob_lbam;
324 u8 hob_lbah;
325
326 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
327
328 union { /*  7: */
329 u8 error; /* read: error */
330 u8 feature; /* write: feature */
331 };
332
333 u8 nsect; /* 8: number of sectors */
334 u8 lbal; /* 9: LBA low */
335 u8 lbam; /* 10: LBA mid */
336 u8 lbah; /* 11: LBA high */
337
338 u8 device; /* 12: device select */
339
340 union { /* 13: */
341 u8 status; /*  read: status  */
342 u8 command; /* write: command */
343 };
344 };
345
346 typedef struct ide_task_s {
347 union {
348 struct ide_taskfile tf;
349 u8 tf_array[14];
350 };
351 u32 tf_flags;
352 int data_phase;
353 struct request *rq; /* copy of request */
354 void *special; /* valid_t generally */
355 } ide_task_t;
356
357 /* ATAPI packet command flags */
358 enum {
359 /* set when an error is considered normal - no retry (ide-tape) */
360 PC_FLAG_ABORT = (1 << 0),
361 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
362 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
363 PC_FLAG_DMA_OK = (1 << 3),
364 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
365 PC_FLAG_DMA_ERROR = (1 << 5),
366 PC_FLAG_WRITING = (1 << 6),
367 /* command timed out */
368 PC_FLAG_TIMEDOUT = (1 << 7),
369 };
370
371 /*
372 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
373 * This is used for several packet commands (not for READ/WRITE commands).
374 */
375 #define IDE_PC_BUFFER_SIZE 256
376 #define ATAPI_WAIT_PC (60 * HZ)
377
378 struct ide_atapi_pc {
379 /* actual packet bytes */
380 u8 c[12];
381 /* incremented on each retry */
382 int retries;
383 int error;
384
385 /* bytes to transfer */
386 int req_xfer;
387 /* bytes actually transferred */
388 int xferred;
389
390 /* data buffer */
391 u8 *buf;
392 /* current buffer position */
393 u8 *cur_pos;
394 int buf_size;
395 /* missing/available data on the current buffer */
396 int b_count;
397
398 /* the corresponding request */
399 struct request *rq;
400
401 unsigned long flags;
402
403 /*
404 * those are more or less driver-specific and some of them are subject
405 * to change/removal later.
406 */
407 u8 pc_buf[IDE_PC_BUFFER_SIZE];
408
409 /* idetape only */
410 struct idetape_bh *bh;
411 char *b_data;
412
413 struct scatterlist *sg;
414 unsigned int sg_cnt;
415
416 unsigned long timeout;
417 };
418
419 struct ide_devset;
420 struct ide_driver;
421
422 #ifdef CONFIG_BLK_DEV_IDEACPI
423 struct ide_acpi_drive_link;
424 struct ide_acpi_hwif_link;
425 #endif
426
427 struct ide_drive_s;
428
429 struct ide_disk_ops {
430 int (*check)(struct ide_drive_s *, const char *);
431 int (*get_capacity)(struct ide_drive_s *);
432 void (*setup)(struct ide_drive_s *);
433 void (*flush)(struct ide_drive_s *);
434 int (*init_media)(struct ide_drive_s *, struct gendisk *);
435 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
436 int);
437 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
438 sector_t);
439 int (*end_request)(struct ide_drive_s *, int, int);
440 int (*ioctl)(struct ide_drive_s *, struct block_device *,
441 fmode_t, unsigned int, unsigned long);
442 };
443
444 /* ATAPI device flags */
445 enum {
446 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
447
448 /* ide-cd */
449 /* Drive cannot eject the disc. */
450 IDE_AFLAG_NO_EJECT = (1 << 1),
451 /* Drive is a pre ATAPI 1.2 drive. */
452 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
453 /* TOC addresses are in BCD. */
454 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
455 /* TOC track numbers are in BCD. */
456 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
457 /*
458 * Drive does not provide data in multiples of SECTOR_SIZE
459 * when more than one interrupt is needed.
460 */
461 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
462 /* Saved TOC information is current. */
463 IDE_AFLAG_TOC_VALID = (1 << 6),
464 /* We think that the drive door is locked. */
465 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
466 /* SET_CD_SPEED command is unsupported. */
467 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
468 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
469 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
470 IDE_AFLAG_SANYO_3CD = (1 << 11),
471 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
472 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
473 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
474
475 /* ide-floppy */
476 /* Avoid commands not supported in Clik drive */
477 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
478 /* Requires BH algorithm for packets */
479 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
480 /* Supports format progress report */
481 IDE_AFLAG_SRFP = (1 << 17),
482
483 /* ide-tape */
484 IDE_AFLAG_IGNORE_DSC = (1 << 18),
485 /* 0 When the tape position is unknown */
486 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
487 /* Device already opened */
488 IDE_AFLAG_BUSY = (1 << 20),
489 /* Attempt to auto-detect the current user block size */
490 IDE_AFLAG_DETECT_BS = (1 << 21),
491 /* Currently on a filemark */
492 IDE_AFLAG_FILEMARK = (1 << 22),
493 /* 0 = no tape is loaded, so we don't rewind after ejecting */
494 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
495
496 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
497 };
498
499 /* device flags */
500 enum {
501 /* restore settings after device reset */
502 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
503 /* device is using DMA for read/write */
504 IDE_DFLAG_USING_DMA = (1 << 1),
505 /* okay to unmask other IRQs */
506 IDE_DFLAG_UNMASK = (1 << 2),
507 /* don't attempt flushes */
508 IDE_DFLAG_NOFLUSH = (1 << 3),
509 /* DSC overlap */
510 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
511 /* give potential excess bandwidth */
512 IDE_DFLAG_NICE1 = (1 << 5),
513 /* device is physically present */
514 IDE_DFLAG_PRESENT = (1 << 6),
515 /* device ejected hint */
516 IDE_DFLAG_DEAD = (1 << 7),
517 /* id read from device (synthetic if not set) */
518 IDE_DFLAG_ID_READ = (1 << 8),
519 IDE_DFLAG_NOPROBE = (1 << 9),
520 /* need to do check_media_change() */
521 IDE_DFLAG_REMOVABLE = (1 << 10),
522 /* needed for removable devices */
523 IDE_DFLAG_ATTACH = (1 << 11),
524 IDE_DFLAG_FORCED_GEOM = (1 << 12),
525 /* disallow setting unmask bit */
526 IDE_DFLAG_NO_UNMASK = (1 << 13),
527 /* disallow enabling 32-bit I/O */
528 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
529 /* for removable only: door lock/unlock works */
530 IDE_DFLAG_DOORLOCKING = (1 << 15),
531 /* disallow DMA */
532 IDE_DFLAG_NODMA = (1 << 16),
533 /* powermanagment told us not to do anything, so sleep nicely */
534 IDE_DFLAG_BLOCKED = (1 << 17),
535 /* sleeping & sleep field valid */
536 IDE_DFLAG_SLEEPING = (1 << 18),
537 IDE_DFLAG_POST_RESET = (1 << 19),
538 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
539 IDE_DFLAG_LBA48 = (1 << 21),
540 /* status of write cache */
541 IDE_DFLAG_WCACHE = (1 << 22),
542 /* used for ignoring ATA_DF */
543 IDE_DFLAG_NOWERR = (1 << 23),
544 /* retrying in PIO */
545 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
546 IDE_DFLAG_LBA = (1 << 25),
547 /* don't unload heads */
548 IDE_DFLAG_NO_UNLOAD = (1 << 26),
549 /* heads unloaded, please don't reset port */
550 IDE_DFLAG_PARKED = (1 << 27),
551 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
552 /* write protect */
553 IDE_DFLAG_WP = (1 << 29),
554 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
555 };
556
557 struct ide_drive_s {
558 char name[4]; /* drive name, such as "hda" */
559 char driver_req[10]; /* requests specific driver */
560
561 struct request_queue *queue; /* request queue */
562
563 struct request *rq; /* current request */
564 void *driver_data; /* extra driver data */
565 u16 *id; /* identification info */
566 #ifdef CONFIG_IDE_PROC_FS
567 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
568 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
569 #endif
570 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
571
572 const struct ide_disk_ops *disk_ops;
573
574 unsigned long dev_flags;
575
576 unsigned long sleep; /* sleep until this time */
577 unsigned long timeout; /* max time to wait for irq */
578
579 special_t special; /* special action flags */
580
581 u8 select; /* basic drive/head select reg value */
582 u8 retry_pio; /* retrying dma capable host in pio */
583 u8 waiting_for_dma; /* dma currently in progress */
584 u8 dma; /* atapi dma flag */
585
586 u8 quirk_list; /* considered quirky, set for a specific host */
587 u8 init_speed; /* transfer rate set at boot */
588 u8 current_speed; /* current transfer rate set */
589 u8 desired_speed; /* desired transfer rate set */
590 u8 dn; /* now wide spread use */
591 u8 acoustic; /* acoustic management */
592 u8 media; /* disk, cdrom, tape, floppy, ... */
593 u8 ready_stat; /* min status value for drive ready */
594 u8 mult_count; /* current multiple sector setting */
595 u8 mult_req; /* requested multiple sector setting */
596 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
597 u8 bad_wstat; /* used for ignoring ATA_DF */
598 u8 head; /* "real" number of heads */
599 u8 sect; /* "real" sectors per track */
600 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
601 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
602
603 /* delay this long before sending packet command */
604 u8 pc_delay;
605
606 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
607 unsigned int cyl; /* "real" number of cyls */
608 unsigned int drive_data; /* used by set_pio_mode/selectproc */
609 unsigned int failures; /* current failure count */
610 unsigned int max_failures; /* maximum allowed failure count */
611 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
612
613 u64 capacity64; /* total number of sectors */
614
615 int lun; /* logical unit */
616 int crc_count; /* crc counter to reduce drive speed */
617
618 unsigned long debug_mask; /* debugging levels switch */
619
620 #ifdef CONFIG_BLK_DEV_IDEACPI
621 struct ide_acpi_drive_link *acpidata;
622 #endif
623 struct list_head list;
624 struct device gendev;
625 struct completion gendev_rel_comp; /* to deal with device release() */
626
627 /* current packet command */
628 struct ide_atapi_pc *pc;
629
630 /* callback for packet commands */
631 void (*pc_callback)(struct ide_drive_s *, int);
632
633 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
634 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
635 unsigned int, int);
636
637 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
638
639 unsigned long atapi_flags;
640
641 struct ide_atapi_pc request_sense_pc;
642 struct request request_sense_rq;
643 };
644
645 typedef struct ide_drive_s ide_drive_t;
646
647 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
648
649 #define to_ide_drv(obj, cont_type) \
650 container_of(obj, struct cont_type, dev)
651
652 #define ide_drv_g(disk, cont_type) \
653 container_of((disk)->private_data, struct cont_type, driver)
654
655 struct ide_port_info;
656
657 struct ide_tp_ops {
658 void (*exec_command)(struct hwif_s *, u8);
659 u8 (*read_status)(struct hwif_s *);
660 u8 (*read_altstatus)(struct hwif_s *);
661
662 void (*set_irq)(struct hwif_s *, int);
663
664 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
665 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
666
667 void (*input_data)(ide_drive_t *, struct request *, void *,
668 unsigned int);
669 void (*output_data)(ide_drive_t *, struct request *, void *,
670 unsigned int);
671 };
672
673 extern const struct ide_tp_ops default_tp_ops;
674
675 /**
676 * struct ide_port_ops - IDE port operations
677 *
678 * @init_dev: host specific initialization of a device
679 * @set_pio_mode: routine to program host for PIO mode
680 * @set_dma_mode: routine to program host for DMA mode
681 * @selectproc: tweaks hardware to select drive
682 * @reset_poll: chipset polling based on hba specifics
683 * @pre_reset: chipset specific changes to default for device-hba resets
684 * @resetproc: routine to reset controller after a disk reset
685 * @maskproc: special host masking for drive selection
686 * @quirkproc: check host's drive quirk list
687 * @clear_irq: clear IRQ
688 *
689 * @mdma_filter: filter MDMA modes
690 * @udma_filter: filter UDMA modes
691 *
692 * @cable_detect: detect cable type
693 */
694 struct ide_port_ops {
695 void (*init_dev)(ide_drive_t *);
696 void (*set_pio_mode)(ide_drive_t *, const u8);
697 void (*set_dma_mode)(ide_drive_t *, const u8);
698 void (*selectproc)(ide_drive_t *);
699 int (*reset_poll)(ide_drive_t *);
700 void (*pre_reset)(ide_drive_t *);
701 void (*resetproc)(ide_drive_t *);
702 void (*maskproc)(ide_drive_t *, int);
703 void (*quirkproc)(ide_drive_t *);
704 void (*clear_irq)(ide_drive_t *);
705
706 u8 (*mdma_filter)(ide_drive_t *);
707 u8 (*udma_filter)(ide_drive_t *);
708
709 u8 (*cable_detect)(struct hwif_s *);
710 };
711
712 struct ide_dma_ops {
713 void (*dma_host_set)(struct ide_drive_s *, int);
714 int (*dma_setup)(struct ide_drive_s *);
715 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
716 void (*dma_start)(struct ide_drive_s *);
717 int (*dma_end)(struct ide_drive_s *);
718 int (*dma_test_irq)(struct ide_drive_s *);
719 void (*dma_lost_irq)(struct ide_drive_s *);
720 void (*dma_timeout)(struct ide_drive_s *);
721 /*
722 * The following method is optional and only required to be
723 * implemented for the SFF-8038i compatible controllers.
724 */
725 u8 (*dma_sff_read_status)(struct hwif_s *);
726 };
727
728 struct ide_host;
729
730 typedef struct hwif_s {
731 struct hwif_s *mate; /* other hwif from same PCI chip */
732 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
733
734 struct ide_host *host;
735
736 char name[6]; /* name of interface, eg. "ide0" */
737
738 struct ide_io_ports io_ports;
739
740 unsigned long sata_scr[SATA_NR_PORTS];
741
742 ide_drive_t *devices[MAX_DRIVES + 1];
743
744 u8 major; /* our major number */
745 u8 index; /* 0 for ide0; 1 for ide1; ... */
746 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
747
748 u32 host_flags;
749
750 u8 pio_mask;
751
752 u8 ultra_mask;
753 u8 mwdma_mask;
754 u8 swdma_mask;
755
756 u8 cbl; /* cable type */
757
758 hwif_chipset_t chipset; /* sub-module for tuning.. */
759
760 struct device *dev;
761
762 ide_ack_intr_t *ack_intr;
763
764 void (*rw_disk)(ide_drive_t *, struct request *);
765
766 const struct ide_tp_ops *tp_ops;
767 const struct ide_port_ops *port_ops;
768 const struct ide_dma_ops *dma_ops;
769
770 /* dma physical region descriptor table (cpu view) */
771 unsigned int *dmatable_cpu;
772 /* dma physical region descriptor table (dma view) */
773 dma_addr_t dmatable_dma;
774
775 /* maximum number of PRD table entries */
776 int prd_max_nents;
777 /* PRD entry size in bytes */
778 int prd_ent_size;
779
780 /* Scatter-gather list used to build the above */
781 struct scatterlist *sg_table;
782 int sg_max_nents; /* Maximum number of entries in it */
783 int sg_nents; /* Current number of entries in it */
784 int orig_sg_nents;
785 int sg_dma_direction; /* dma transfer direction */
786
787 /* data phase of the active command (currently only valid for PIO/DMA) */
788 int data_phase;
789
790 struct ide_task_s task; /* current command */
791
792 unsigned int nsect;
793 unsigned int nleft;
794 struct scatterlist *cursg;
795 unsigned int cursg_ofs;
796
797 int rqsize; /* max sectors per request */
798 int irq; /* our irq number */
799
800 unsigned long dma_base; /* base addr for dma ports */
801
802 unsigned long config_data; /* for use by chipset-specific code */
803 unsigned long select_data; /* for use by chipset-specific code */
804
805 unsigned long extra_base; /* extra addr for dma ports */
806 unsigned extra_ports; /* number of extra dma ports */
807
808 unsigned present : 1; /* this interface exists */
809 unsigned busy : 1; /* serializes devices on a port */
810
811 struct device gendev;
812 struct device *portdev;
813
814 struct completion gendev_rel_comp; /* To deal with device release() */
815
816 void *hwif_data; /* extra hwif data */
817
818 #ifdef CONFIG_BLK_DEV_IDEACPI
819 struct ide_acpi_hwif_link *acpidata;
820 #endif
821
822 /* IRQ handler, if active */
823 ide_startstop_t (*handler)(ide_drive_t *);
824
825 /* BOOL: polling active & poll_timeout field valid */
826 unsigned int polling : 1;
827
828 /* current drive */
829 ide_drive_t *cur_dev;
830
831 /* current request */
832 struct request *rq;
833
834 /* failsafe timer */
835 struct timer_list timer;
836 /* timeout value during long polls */
837 unsigned long poll_timeout;
838 /* queried upon timeouts */
839 int (*expiry)(ide_drive_t *);
840
841 int req_gen;
842 int req_gen_timer;
843
844 spinlock_t lock;
845 } ____cacheline_internodealigned_in_smp ide_hwif_t;
846
847 #define MAX_HOST_PORTS 4
848
849 struct ide_host {
850 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
851 unsigned int n_ports;
852 struct device *dev[2];
853 int (*init_chipset)(struct pci_dev *);
854 irq_handler_t irq_handler;
855 unsigned long host_flags;
856 void *host_priv;
857 ide_hwif_t *cur_port; /* for hosts requiring serialization */
858
859 /* used for hosts requiring serialization */
860 volatile unsigned long host_busy;
861 };
862
863 #define IDE_HOST_BUSY 0
864
865 /*
866 * internal ide interrupt handler type
867 */
868 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
869 typedef int (ide_expiry_t)(ide_drive_t *);
870
871 /* used by ide-cd, ide-floppy, etc. */
872 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
873
874 extern struct mutex ide_setting_mtx;
875
876 /*
877 * configurable drive settings
878 */
879
880 #define DS_SYNC (1 << 0)
881
882 struct ide_devset {
883 int (*get)(ide_drive_t *);
884 int (*set)(ide_drive_t *, int);
885 unsigned int flags;
886 };
887
888 #define __DEVSET(_flags, _get, _set) { \
889 .flags = _flags, \
890 .get = _get, \
891 .set = _set, \
892 }
893
894 #define ide_devset_get(name, field) \
895 static int get_##name(ide_drive_t *drive) \
896 { \
897 return drive->field; \
898 }
899
900 #define ide_devset_set(name, field) \
901 static int set_##name(ide_drive_t *drive, int arg) \
902 { \
903 drive->field = arg; \
904 return 0; \
905 }
906
907 #define ide_devset_get_flag(name, flag) \
908 static int get_##name(ide_drive_t *drive) \
909 { \
910 return !!(drive->dev_flags & flag); \
911 }
912
913 #define ide_devset_set_flag(name, flag) \
914 static int set_##name(ide_drive_t *drive, int arg) \
915 { \
916 if (arg) \
917 drive->dev_flags |= flag; \
918 else \
919 drive->dev_flags &= ~flag; \
920 return 0; \
921 }
922
923 #define __IDE_DEVSET(_name, _flags, _get, _set) \
924 const struct ide_devset ide_devset_##_name = \
925 __DEVSET(_flags, _get, _set)
926
927 #define IDE_DEVSET(_name, _flags, _get, _set) \
928 static __IDE_DEVSET(_name, _flags, _get, _set)
929
930 #define ide_devset_rw(_name, _func) \
931 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
932
933 #define ide_devset_w(_name, _func) \
934 IDE_DEVSET(_name, 0, NULL, set_##_func)
935
936 #define ide_ext_devset_rw(_name, _func) \
937 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
938
939 #define ide_ext_devset_rw_sync(_name, _func) \
940 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
941
942 #define ide_decl_devset(_name) \
943 extern const struct ide_devset ide_devset_##_name
944
945 ide_decl_devset(io_32bit);
946 ide_decl_devset(keepsettings);
947 ide_decl_devset(pio_mode);
948 ide_decl_devset(unmaskirq);
949 ide_decl_devset(using_dma);
950
951 #ifdef CONFIG_IDE_PROC_FS
952 /*
953 * /proc/ide interface
954 */
955
956 #define ide_devset_rw_field(_name, _field) \
957 ide_devset_get(_name, _field); \
958 ide_devset_set(_name, _field); \
959 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
960
961 #define ide_devset_rw_flag(_name, _field) \
962 ide_devset_get_flag(_name, _field); \
963 ide_devset_set_flag(_name, _field); \
964 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
965
966 struct ide_proc_devset {
967 const char *name;
968 const struct ide_devset *setting;
969 int min, max;
970 int (*mulf)(ide_drive_t *);
971 int (*divf)(ide_drive_t *);
972 };
973
974 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
975 .name = __stringify(_name), \
976 .setting = &ide_devset_##_name, \
977 .min = _min, \
978 .max = _max, \
979 .mulf = _mulf, \
980 .divf = _divf, \
981 }
982
983 #define IDE_PROC_DEVSET(_name, _min, _max) \
984 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
985
986 typedef struct {
987 const char *name;
988 mode_t mode;
989 read_proc_t *read_proc;
990 write_proc_t *write_proc;
991 } ide_proc_entry_t;
992
993 void proc_ide_create(void);
994 void proc_ide_destroy(void);
995 void ide_proc_register_port(ide_hwif_t *);
996 void ide_proc_port_register_devices(ide_hwif_t *);
997 void ide_proc_unregister_device(ide_drive_t *);
998 void ide_proc_unregister_port(ide_hwif_t *);
999 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
1000 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
1001
1002 read_proc_t proc_ide_read_capacity;
1003 read_proc_t proc_ide_read_geometry;
1004
1005 /*
1006 * Standard exit stuff:
1007 */
1008 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1009 { \
1010 len -= off; \
1011 if (len < count) { \
1012 *eof = 1; \
1013 if (len <= 0) \
1014 return 0; \
1015 } else \
1016 len = count; \
1017 *start = page + off; \
1018 return len; \
1019 }
1020 #else
1021 static inline void proc_ide_create(void) { ; }
1022 static inline void proc_ide_destroy(void) { ; }
1023 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1024 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1025 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1026 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1027 static inline void ide_proc_register_driver(ide_drive_t *drive,
1028 struct ide_driver *driver) { ; }
1029 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1030 struct ide_driver *driver) { ; }
1031 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1032 #endif
1033
1034 enum {
1035 /* enter/exit functions */
1036 IDE_DBG_FUNC = (1 << 0),
1037 /* sense key/asc handling */
1038 IDE_DBG_SENSE = (1 << 1),
1039 /* packet commands handling */
1040 IDE_DBG_PC = (1 << 2),
1041 /* request handling */
1042 IDE_DBG_RQ = (1 << 3),
1043 /* driver probing/setup */
1044 IDE_DBG_PROBE = (1 << 4),
1045 };
1046
1047 /* DRV_NAME has to be defined in the driver before using the macro below */
1048 #define __ide_debug_log(lvl, fmt, args...) \
1049 { \
1050 if (unlikely(drive->debug_mask & lvl)) \
1051 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1052 }
1053
1054 /*
1055 * Power Management state machine (rq->pm->pm_step).
1056 *
1057 * For each step, the core calls ide_start_power_step() first.
1058 * This can return:
1059 * - ide_stopped : In this case, the core calls us back again unless
1060 * step have been set to ide_power_state_completed.
1061 * - ide_started : In this case, the channel is left busy until an
1062 * async event (interrupt) occurs.
1063 * Typically, ide_start_power_step() will issue a taskfile request with
1064 * do_rw_taskfile().
1065 *
1066 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1067 * with the error code if any. This routine should update the step value
1068 * and return. It should not start a new request. The core will call
1069 * ide_start_power_step() for the new step value, unless step have been
1070 * set to IDE_PM_COMPLETED.
1071 */
1072 enum {
1073 IDE_PM_START_SUSPEND,
1074 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1075 IDE_PM_STANDBY,
1076
1077 IDE_PM_START_RESUME,
1078 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1079 IDE_PM_IDLE,
1080 IDE_PM_RESTORE_DMA,
1081
1082 IDE_PM_COMPLETED,
1083 };
1084
1085 int generic_ide_suspend(struct device *, pm_message_t);
1086 int generic_ide_resume(struct device *);
1087
1088 void ide_complete_power_step(ide_drive_t *, struct request *);
1089 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1090 void ide_complete_pm_request(ide_drive_t *, struct request *);
1091 void ide_check_pm_state(ide_drive_t *, struct request *);
1092
1093 /*
1094 * Subdrivers support.
1095 *
1096 * The gendriver.owner field should be set to the module owner of this driver.
1097 * The gendriver.name field should be set to the name of this driver
1098 */
1099 struct ide_driver {
1100 const char *version;
1101 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1102 int (*end_request)(ide_drive_t *, int, int);
1103 struct device_driver gen_driver;
1104 int (*probe)(ide_drive_t *);
1105 void (*remove)(ide_drive_t *);
1106 void (*resume)(ide_drive_t *);
1107 void (*shutdown)(ide_drive_t *);
1108 #ifdef CONFIG_IDE_PROC_FS
1109 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1110 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1111 #endif
1112 };
1113
1114 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1115
1116 int ide_device_get(ide_drive_t *);
1117 void ide_device_put(ide_drive_t *);
1118
1119 struct ide_ioctl_devset {
1120 unsigned int get_ioctl;
1121 unsigned int set_ioctl;
1122 const struct ide_devset *setting;
1123 };
1124
1125 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1126 unsigned long, const struct ide_ioctl_devset *);
1127
1128 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1129
1130 extern int ide_vlb_clk;
1131 extern int ide_pci_clk;
1132
1133 int ide_end_request(ide_drive_t *, int, int);
1134 int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
1135 void ide_kill_rq(ide_drive_t *, struct request *);
1136
1137 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1138 ide_expiry_t *);
1139 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1140 ide_expiry_t *);
1141
1142 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1143 ide_expiry_t *);
1144
1145 void ide_execute_pkt_cmd(ide_drive_t *);
1146
1147 void ide_pad_transfer(ide_drive_t *, int, int);
1148
1149 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1150
1151 void ide_fix_driveid(u16 *);
1152
1153 extern void ide_fixstring(u8 *, const int, const int);
1154
1155 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1156
1157 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1158
1159 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1160 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1161
1162 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1163
1164 extern int ide_devset_execute(ide_drive_t *drive,
1165 const struct ide_devset *setting, int arg);
1166
1167 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1168
1169 void ide_tf_dump(const char *, struct ide_taskfile *);
1170
1171 void ide_exec_command(ide_hwif_t *, u8);
1172 u8 ide_read_status(ide_hwif_t *);
1173 u8 ide_read_altstatus(ide_hwif_t *);
1174
1175 void ide_set_irq(ide_hwif_t *, int);
1176
1177 void ide_tf_load(ide_drive_t *, ide_task_t *);
1178 void ide_tf_read(ide_drive_t *, ide_task_t *);
1179
1180 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1181 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1182
1183 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1184
1185 extern void SELECT_DRIVE(ide_drive_t *);
1186 void SELECT_MASK(ide_drive_t *, int);
1187
1188 u8 ide_read_error(ide_drive_t *);
1189 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1190
1191 int ide_check_atapi_device(ide_drive_t *, const char *);
1192
1193 void ide_init_pc(struct ide_atapi_pc *);
1194
1195 /* Disk head parking */
1196 extern wait_queue_head_t ide_park_wq;
1197 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1198 char *buf);
1199 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1200 const char *buf, size_t len);
1201
1202 /*
1203 * Special requests for ide-tape block device strategy routine.
1204 *
1205 * In order to service a character device command, we add special requests to
1206 * the tail of our block device request queue and wait for their completion.
1207 */
1208 enum {
1209 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1210 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1211 REQ_IDETAPE_READ = (1 << 2),
1212 REQ_IDETAPE_WRITE = (1 << 3),
1213 };
1214
1215 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1216
1217 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1218 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1219 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1220 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1221 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1222
1223 int ide_cd_expiry(ide_drive_t *);
1224
1225 int ide_cd_get_xferlen(struct request *);
1226
1227 ide_startstop_t ide_issue_pc(ide_drive_t *);
1228
1229 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1230
1231 void task_end_request(ide_drive_t *, struct request *, u8);
1232
1233 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1234 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1235
1236 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1237
1238 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1239
1240 extern int ide_driveid_update(ide_drive_t *);
1241 extern int ide_config_drive_speed(ide_drive_t *, u8);
1242 extern u8 eighty_ninty_three (ide_drive_t *);
1243 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1244
1245 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1246
1247 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1248
1249 extern void ide_timer_expiry(unsigned long);
1250 extern irqreturn_t ide_intr(int irq, void *dev_id);
1251 extern void do_ide_request(struct request_queue *);
1252
1253 void ide_init_disk(struct gendisk *, ide_drive_t *);
1254
1255 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1256 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1257 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1258 #else
1259 #define ide_pci_register_driver(d) pci_register_driver(d)
1260 #endif
1261
1262 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1263 {
1264 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1265 return 1;
1266 return 0;
1267 }
1268
1269 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1270 hw_regs_t *, hw_regs_t **);
1271 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1272
1273 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1274 int ide_pci_set_master(struct pci_dev *, const char *);
1275 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1276 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1277 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1278 #else
1279 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1280 const struct ide_port_info *d)
1281 {
1282 return -EINVAL;
1283 }
1284 #endif
1285
1286 struct ide_pci_enablebit {
1287 u8 reg; /* byte pci reg holding the enable-bit */
1288 u8 mask; /* mask to isolate the enable-bit */
1289 u8 val; /* value of masked reg when "enabled" */
1290 };
1291
1292 enum {
1293 /* Uses ISA control ports not PCI ones. */
1294 IDE_HFLAG_ISA_PORTS = (1 << 0),
1295 /* single port device */
1296 IDE_HFLAG_SINGLE = (1 << 1),
1297 /* don't use legacy PIO blacklist */
1298 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1299 /* set for the second port of QD65xx */
1300 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1301 /* use PIO8/9 for prefetch off/on */
1302 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1303 /* use PIO6/7 for fast-devsel off/on */
1304 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1305 /* use 100-102 and 200-202 PIO values to set DMA modes */
1306 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1307 /*
1308 * keep DMA setting when programming PIO mode, may be used only
1309 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1310 */
1311 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1312 /* program host for the transfer mode after programming device */
1313 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1314 /* don't program host/device for the transfer mode ("smart" hosts) */
1315 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1316 /* trust BIOS for programming chipset/device for DMA */
1317 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1318 /* host is CS5510/CS5520 */
1319 IDE_HFLAG_CS5520 = (1 << 11),
1320 /* ATAPI DMA is unsupported */
1321 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1322 /* set if host is a "non-bootable" controller */
1323 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1324 /* host doesn't support DMA */
1325 IDE_HFLAG_NO_DMA = (1 << 14),
1326 /* check if host is PCI IDE device before allowing DMA */
1327 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1328 /* host uses MMIO */
1329 IDE_HFLAG_MMIO = (1 << 16),
1330 /* no LBA48 */
1331 IDE_HFLAG_NO_LBA48 = (1 << 17),
1332 /* no LBA48 DMA */
1333 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1334 /* data FIFO is cleared by an error */
1335 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1336 /* serialize ports */
1337 IDE_HFLAG_SERIALIZE = (1 << 20),
1338 /* host is TRM290 */
1339 IDE_HFLAG_TRM290 = (1 << 23),
1340 /* use 32-bit I/O ops */
1341 IDE_HFLAG_IO_32BIT = (1 << 24),
1342 /* unmask IRQs */
1343 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1344 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1345 /* serialize ports if DMA is possible (for sl82c105) */
1346 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1347 /* force host out of "simplex" mode */
1348 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1349 /* DSC overlap is unsupported */
1350 IDE_HFLAG_NO_DSC = (1 << 29),
1351 /* never use 32-bit I/O ops */
1352 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1353 /* never unmask IRQs */
1354 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1355 };
1356
1357 #ifdef CONFIG_BLK_DEV_OFFBOARD
1358 # define IDE_HFLAG_OFF_BOARD 0
1359 #else
1360 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1361 #endif
1362
1363 struct ide_port_info {
1364 char *name;
1365 int (*init_chipset)(struct pci_dev *);
1366 void (*init_iops)(ide_hwif_t *);
1367 void (*init_hwif)(ide_hwif_t *);
1368 int (*init_dma)(ide_hwif_t *,
1369 const struct ide_port_info *);
1370
1371 const struct ide_tp_ops *tp_ops;
1372 const struct ide_port_ops *port_ops;
1373 const struct ide_dma_ops *dma_ops;
1374
1375 struct ide_pci_enablebit enablebits[2];
1376
1377 hwif_chipset_t chipset;
1378
1379 u16 max_sectors; /* if < than the default one */
1380
1381 u32 host_flags;
1382 u8 pio_mask;
1383 u8 swdma_mask;
1384 u8 mwdma_mask;
1385 u8 udma_mask;
1386 };
1387
1388 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1389 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1390 const struct ide_port_info *, void *);
1391 void ide_pci_remove(struct pci_dev *);
1392
1393 #ifdef CONFIG_PM
1394 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1395 int ide_pci_resume(struct pci_dev *);
1396 #else
1397 #define ide_pci_suspend NULL
1398 #define ide_pci_resume NULL
1399 #endif
1400
1401 void ide_map_sg(ide_drive_t *, struct request *);
1402 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1403
1404 #define BAD_DMA_DRIVE 0
1405 #define GOOD_DMA_DRIVE 1
1406
1407 struct drive_list_entry {
1408 const char *id_model;
1409 const char *id_firmware;
1410 };
1411
1412 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1413
1414 #ifdef CONFIG_BLK_DEV_IDEDMA
1415 int ide_dma_good_drive(ide_drive_t *);
1416 int __ide_dma_bad_drive(ide_drive_t *);
1417 int ide_id_dma_bug(ide_drive_t *);
1418
1419 u8 ide_find_dma_mode(ide_drive_t *, u8);
1420
1421 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1422 {
1423 return ide_find_dma_mode(drive, XFER_UDMA_6);
1424 }
1425
1426 void ide_dma_off_quietly(ide_drive_t *);
1427 void ide_dma_off(ide_drive_t *);
1428 void ide_dma_on(ide_drive_t *);
1429 int ide_set_dma(ide_drive_t *);
1430 void ide_check_dma_crc(ide_drive_t *);
1431 ide_startstop_t ide_dma_intr(ide_drive_t *);
1432
1433 int ide_allocate_dma_engine(ide_hwif_t *);
1434 void ide_release_dma_engine(ide_hwif_t *);
1435
1436 int ide_build_sglist(ide_drive_t *, struct request *);
1437 void ide_destroy_dmatable(ide_drive_t *);
1438
1439 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1440 int config_drive_for_dma(ide_drive_t *);
1441 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1442 void ide_dma_host_set(ide_drive_t *, int);
1443 extern int ide_dma_setup(ide_drive_t *);
1444 void ide_dma_exec_cmd(ide_drive_t *, u8);
1445 extern void ide_dma_start(ide_drive_t *);
1446 int ide_dma_end(ide_drive_t *);
1447 int ide_dma_test_irq(ide_drive_t *);
1448 u8 ide_dma_sff_read_status(ide_hwif_t *);
1449 extern const struct ide_dma_ops sff_dma_ops;
1450 #else
1451 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1452 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1453
1454 void ide_dma_lost_irq(ide_drive_t *);
1455 void ide_dma_timeout(ide_drive_t *);
1456 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1457
1458 #else
1459 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1460 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1461 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1462 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1463 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1464 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1465 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1466 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1467 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1468 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1469 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1470 #endif /* CONFIG_BLK_DEV_IDEDMA */
1471
1472 #ifdef CONFIG_BLK_DEV_IDEACPI
1473 int ide_acpi_init(void);
1474 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1475 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1476 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1477 void ide_acpi_init_port(ide_hwif_t *);
1478 void ide_acpi_port_init_devices(ide_hwif_t *);
1479 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1480 #else
1481 static inline int ide_acpi_init(void) { return 0; }
1482 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1483 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1484 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1485 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1486 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1487 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1488 #endif
1489
1490 void ide_register_region(struct gendisk *);
1491 void ide_unregister_region(struct gendisk *);
1492
1493 void ide_undecoded_slave(ide_drive_t *);
1494
1495 void ide_port_apply_params(ide_hwif_t *);
1496 int ide_sysfs_register_port(ide_hwif_t *);
1497
1498 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1499 void ide_host_free(struct ide_host *);
1500 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1501 hw_regs_t **);
1502 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1503 struct ide_host **);
1504 void ide_host_remove(struct ide_host *);
1505 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1506 void ide_port_unregister_devices(ide_hwif_t *);
1507 void ide_port_scan(ide_hwif_t *);
1508
1509 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1510 {
1511 return hwif->hwif_data;
1512 }
1513
1514 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1515 {
1516 hwif->hwif_data = data;
1517 }
1518
1519 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1520
1521 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1522 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1523
1524 struct ide_timing {
1525 u8 mode;
1526 u8 setup; /* t1 */
1527 u16 act8b; /* t2 for 8-bit io */
1528 u16 rec8b; /* t2i for 8-bit io */
1529 u16 cyc8b; /* t0 for 8-bit io */
1530 u16 active; /* t2 or tD */
1531 u16 recover; /* t2i or tK */
1532 u16 cycle; /* t0 */
1533 u16 udma; /* t2CYCTYP/2 */
1534 };
1535
1536 enum {
1537 IDE_TIMING_SETUP = (1 << 0),
1538 IDE_TIMING_ACT8B = (1 << 1),
1539 IDE_TIMING_REC8B = (1 << 2),
1540 IDE_TIMING_CYC8B = (1 << 3),
1541 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1542 IDE_TIMING_CYC8B,
1543 IDE_TIMING_ACTIVE = (1 << 4),
1544 IDE_TIMING_RECOVER = (1 << 5),
1545 IDE_TIMING_CYCLE = (1 << 6),
1546 IDE_TIMING_UDMA = (1 << 7),
1547 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1548 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1549 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1550 };
1551
1552 struct ide_timing *ide_timing_find_mode(u8);
1553 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1554 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1555 struct ide_timing *, unsigned int);
1556 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1557
1558 #ifdef CONFIG_IDE_XFER_MODE
1559 int ide_scan_pio_blacklist(char *);
1560 const char *ide_xfer_verbose(u8);
1561 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1562 int ide_set_pio_mode(ide_drive_t *, u8);
1563 int ide_set_dma_mode(ide_drive_t *, u8);
1564 void ide_set_pio(ide_drive_t *, u8);
1565 int ide_set_xfer_rate(ide_drive_t *, u8);
1566 #else
1567 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1568 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1569 #endif
1570
1571 static inline void ide_set_max_pio(ide_drive_t *drive)
1572 {
1573 ide_set_pio(drive, 255);
1574 }
1575
1576 char *ide_media_string(ide_drive_t *);
1577
1578 extern struct device_attribute ide_dev_attrs[];
1579 extern struct bus_type ide_bus_type;
1580 extern struct class *ide_port_class;
1581
1582 static inline void ide_dump_identify(u8 *id)
1583 {
1584 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1585 }
1586
1587 static inline int hwif_to_node(ide_hwif_t *hwif)
1588 {
1589 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1590 }
1591
1592 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1593 {
1594 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1595
1596 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1597 }
1598
1599 #define ide_port_for_each_dev(i, dev, port) \
1600 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1601
1602 #define ide_port_for_each_present_dev(i, dev, port) \
1603 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1604 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1605
1606 #define ide_host_for_each_port(i, port, host) \
1607 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1608
1609 #endif /* _IDE_H */
Linux kernel - Deliverables
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