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ide: turn selectproc() method into dev_select() method (take 5)
[wandboard.git] / include / linux / ide.h
blobc69181c61fd8a48175178742ad8bbc5f523f6d20
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 /* Error codes returned in rq->errors to the higher part of the driver. */
44 enum {
45 IDE_DRV_ERROR_GENERAL = 101,
46 IDE_DRV_ERROR_FILEMARK = 102,
47 IDE_DRV_ERROR_EOD = 103,
48 };
49
50 /*
51 * Definitions for accessing IDE controller registers
52 */
53 #define IDE_NR_PORTS (10)
54
55 struct ide_io_ports {
56 unsigned long data_addr;
57
58 union {
59 unsigned long error_addr; /* read: error */
60 unsigned long feature_addr; /* write: feature */
61 };
62
63 unsigned long nsect_addr;
64 unsigned long lbal_addr;
65 unsigned long lbam_addr;
66 unsigned long lbah_addr;
67
68 unsigned long device_addr;
69
70 union {
71 unsigned long status_addr; /*  read: status  */
72 unsigned long command_addr; /* write: command */
73 };
74
75 unsigned long ctl_addr;
76
77 unsigned long irq_addr;
78 };
79
80 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
81
82 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
83 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
84 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
85 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
86
87 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
88
89 #define SATA_NR_PORTS (3) /* 16 possible ?? */
90
91 #define SATA_STATUS_OFFSET (0)
92 #define SATA_ERROR_OFFSET (1)
93 #define SATA_CONTROL_OFFSET (2)
94
95 /*
96 * Our Physical Region Descriptor (PRD) table should be large enough
97 * to handle the biggest I/O request we are likely to see. Since requests
98 * can have no more than 256 sectors, and since the typical blocksize is
99 * two or more sectors, we could get by with a limit of 128 entries here for
100 * the usual worst case. Most requests seem to include some contiguous blocks,
101 * further reducing the number of table entries required.
102 *
103 * The driver reverts to PIO mode for individual requests that exceed
104 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
105 * 100% of all crazy scenarios here is not necessary.
106 *
107 * As it turns out though, we must allocate a full 4KB page for this,
108 * so the two PRD tables (ide0 & ide1) will each get half of that,
109 * allowing each to have about 256 entries (8 bytes each) from this.
110 */
111 #define PRD_BYTES 8
112 #define PRD_ENTRIES 256
113
114 /*
115 * Some more useful definitions
116 */
117 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
118 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
119 #define SECTOR_SIZE 512
120
121 /*
122 * Timeouts for various operations:
123 */
124 enum {
125 /* spec allows up to 20ms */
126 WAIT_DRQ = HZ / 10, /* 100ms */
127 /* some laptops are very slow */
128 WAIT_READY = 5 * HZ, /* 5s */
129 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
130 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
131 /* worst case when spinning up */
132 WAIT_WORSTCASE = 30 * HZ, /* 30s */
133 /* maximum wait for an IRQ to happen */
134 WAIT_CMD = 10 * HZ, /* 10s */
135 /* Some drives require a longer IRQ timeout. */
136 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
137 /*
138 * Some drives (for example, Seagate STT3401A Travan) require a very
139 * long timeout, because they don't return an interrupt or clear their
140 * BSY bit until after the command completes (even retension commands).
141 */
142 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
143 /* minimum sleep time */
144 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
145 };
146
147 /*
148 * Op codes for special requests to be handled by ide_special_rq().
149 * Values should be in the range of 0x20 to 0x3f.
150 */
151 #define REQ_DRIVE_RESET 0x20
152 #define REQ_DEVSET_EXEC 0x21
153 #define REQ_PARK_HEADS 0x22
154 #define REQ_UNPARK_HEADS 0x23
155
156 /*
157 * Check for an interrupt and acknowledge the interrupt status
158 */
159 struct hwif_s;
160 typedef int (ide_ack_intr_t)(struct hwif_s *);
161
162 /*
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
165 */
166 enum { ide_unknown, ide_generic, ide_pci,
167 ide_cmd640, ide_dtc2278, ide_ali14xx,
168 ide_qd65xx, ide_umc8672, ide_ht6560b,
169 ide_4drives, ide_pmac, ide_acorn,
170 ide_au1xxx, ide_palm3710
171 };
172
173 typedef u8 hwif_chipset_t;
174
175 /*
176 * Structure to hold all information about the location of this port
177 */
178 typedef struct hw_regs_s {
179 union {
180 struct ide_io_ports io_ports;
181 unsigned long io_ports_array[IDE_NR_PORTS];
182 };
183
184 int irq; /* our irq number */
185 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
186 hwif_chipset_t chipset;
187 struct device *dev, *parent;
188 unsigned long config;
189 } hw_regs_t;
190
191 static inline void ide_std_init_ports(hw_regs_t *hw,
192 unsigned long io_addr,
193 unsigned long ctl_addr)
194 {
195 unsigned int i;
196
197 for (i = 0; i <= 7; i++)
198 hw->io_ports_array[i] = io_addr++;
199
200 hw->io_ports.ctl_addr = ctl_addr;
201 }
202
203 #define MAX_HWIFS 10
204
205 /*
206 * Now for the data we need to maintain per-drive: ide_drive_t
207 */
208
209 #define ide_scsi 0x21
210 #define ide_disk 0x20
211 #define ide_optical 0x7
212 #define ide_cdrom 0x5
213 #define ide_tape 0x1
214 #define ide_floppy 0x0
215
216 /*
217 * Special Driver Flags
218 *
219 * set_geometry : respecify drive geometry
220 * recalibrate : seek to cyl 0
221 * set_multmode : set multmode count
222 * reserved : unused
223 */
224 typedef union {
225 unsigned all : 8;
226 struct {
227 unsigned set_geometry : 1;
228 unsigned recalibrate : 1;
229 unsigned set_multmode : 1;
230 unsigned reserved : 5;
231 } b;
232 } special_t;
233
234 /*
235 * Status returned from various ide_ functions
236 */
237 typedef enum {
238 ide_stopped, /* no drive operation was started */
239 ide_started, /* a drive operation was started, handler was set */
240 } ide_startstop_t;
241
242 enum {
243 IDE_TFLAG_LBA48 = (1 << 0),
244 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 1),
245 IDE_TFLAG_OUT_HOB_NSECT = (1 << 2),
246 IDE_TFLAG_OUT_HOB_LBAL = (1 << 3),
247 IDE_TFLAG_OUT_HOB_LBAM = (1 << 4),
248 IDE_TFLAG_OUT_HOB_LBAH = (1 << 5),
249 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
250 IDE_TFLAG_OUT_HOB_NSECT |
251 IDE_TFLAG_OUT_HOB_LBAL |
252 IDE_TFLAG_OUT_HOB_LBAM |
253 IDE_TFLAG_OUT_HOB_LBAH,
254 IDE_TFLAG_OUT_FEATURE = (1 << 6),
255 IDE_TFLAG_OUT_NSECT = (1 << 7),
256 IDE_TFLAG_OUT_LBAL = (1 << 8),
257 IDE_TFLAG_OUT_LBAM = (1 << 9),
258 IDE_TFLAG_OUT_LBAH = (1 << 10),
259 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
260 IDE_TFLAG_OUT_NSECT |
261 IDE_TFLAG_OUT_LBAL |
262 IDE_TFLAG_OUT_LBAM |
263 IDE_TFLAG_OUT_LBAH,
264 IDE_TFLAG_OUT_DEVICE = (1 << 11),
265 IDE_TFLAG_WRITE = (1 << 12),
266 IDE_TFLAG_CUSTOM_HANDLER = (1 << 13),
267 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 14),
268 IDE_TFLAG_IN_HOB_ERROR = (1 << 15),
269 IDE_TFLAG_IN_HOB_NSECT = (1 << 16),
270 IDE_TFLAG_IN_HOB_LBAL = (1 << 17),
271 IDE_TFLAG_IN_HOB_LBAM = (1 << 18),
272 IDE_TFLAG_IN_HOB_LBAH = (1 << 19),
273 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
274 IDE_TFLAG_IN_HOB_LBAM |
275 IDE_TFLAG_IN_HOB_LBAH,
276 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_ERROR |
277 IDE_TFLAG_IN_HOB_NSECT |
278 IDE_TFLAG_IN_HOB_LBA,
279 IDE_TFLAG_IN_ERROR = (1 << 20),
280 IDE_TFLAG_IN_NSECT = (1 << 21),
281 IDE_TFLAG_IN_LBAL = (1 << 22),
282 IDE_TFLAG_IN_LBAM = (1 << 23),
283 IDE_TFLAG_IN_LBAH = (1 << 24),
284 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
285 IDE_TFLAG_IN_LBAM |
286 IDE_TFLAG_IN_LBAH,
287 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
288 IDE_TFLAG_IN_LBA,
289 IDE_TFLAG_IN_DEVICE = (1 << 25),
290 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
291 IDE_TFLAG_IN_HOB,
292 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
293 IDE_TFLAG_IN_TF,
294 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
295 IDE_TFLAG_IN_DEVICE,
296 /* force 16-bit I/O operations */
297 IDE_TFLAG_IO_16BIT = (1 << 26),
298 /* struct ide_cmd was allocated using kmalloc() */
299 IDE_TFLAG_DYN = (1 << 27),
300 IDE_TFLAG_FS = (1 << 28),
301 IDE_TFLAG_MULTI_PIO = (1 << 29),
302 };
303
304 enum {
305 IDE_FTFLAG_FLAGGED = (1 << 0),
306 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
307 IDE_FTFLAG_OUT_DATA = (1 << 2),
308 IDE_FTFLAG_IN_DATA = (1 << 3),
309 };
310
311 struct ide_taskfile {
312 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
313 /* 1-5: additional data to support LBA48 */
314 union {
315 u8 hob_error; /* read: error */
316 u8 hob_feature; /* write: feature */
317 };
318
319 u8 hob_nsect;
320 u8 hob_lbal;
321 u8 hob_lbam;
322 u8 hob_lbah;
323
324 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
325
326 union { /*  7: */
327 u8 error; /* read: error */
328 u8 feature; /* write: feature */
329 };
330
331 u8 nsect; /* 8: number of sectors */
332 u8 lbal; /* 9: LBA low */
333 u8 lbam; /* 10: LBA mid */
334 u8 lbah; /* 11: LBA high */
335
336 u8 device; /* 12: device select */
337
338 union { /* 13: */
339 u8 status; /*  read: status  */
340 u8 command; /* write: command */
341 };
342 };
343
344 struct ide_cmd {
345 union {
346 struct ide_taskfile tf;
347 u8 tf_array[14];
348 };
349 u8 ftf_flags; /* for TASKFILE ioctl */
350 u32 tf_flags;
351 int protocol;
352
353 int sg_nents; /* number of sg entries */
354 int orig_sg_nents;
355 int sg_dma_direction; /* DMA transfer direction */
356
357 unsigned int nbytes;
358 unsigned int nleft;
359 unsigned int last_xfer_len;
360
361 struct scatterlist *cursg;
362 unsigned int cursg_ofs;
363
364 struct request *rq; /* copy of request */
365 void *special; /* valid_t generally */
366 };
367
368 /* ATAPI packet command flags */
369 enum {
370 /* set when an error is considered normal - no retry (ide-tape) */
371 PC_FLAG_ABORT = (1 << 0),
372 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
373 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
374 PC_FLAG_DMA_OK = (1 << 3),
375 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
376 PC_FLAG_DMA_ERROR = (1 << 5),
377 PC_FLAG_WRITING = (1 << 6),
378 };
379
380 /*
381 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
382 * This is used for several packet commands (not for READ/WRITE commands).
383 */
384 #define IDE_PC_BUFFER_SIZE 64
385 #define ATAPI_WAIT_PC (60 * HZ)
386
387 struct ide_atapi_pc {
388 /* actual packet bytes */
389 u8 c[12];
390 /* incremented on each retry */
391 int retries;
392 int error;
393
394 /* bytes to transfer */
395 int req_xfer;
396 /* bytes actually transferred */
397 int xferred;
398
399 /* data buffer */
400 u8 *buf;
401 /* current buffer position */
402 u8 *cur_pos;
403 int buf_size;
404 /* missing/available data on the current buffer */
405 int b_count;
406
407 /* the corresponding request */
408 struct request *rq;
409
410 unsigned long flags;
411
412 /*
413 * those are more or less driver-specific and some of them are subject
414 * to change/removal later.
415 */
416 u8 pc_buf[IDE_PC_BUFFER_SIZE];
417
418 /* idetape only */
419 struct idetape_bh *bh;
420 char *b_data;
421
422 unsigned long timeout;
423 };
424
425 struct ide_devset;
426 struct ide_driver;
427
428 #ifdef CONFIG_BLK_DEV_IDEACPI
429 struct ide_acpi_drive_link;
430 struct ide_acpi_hwif_link;
431 #endif
432
433 struct ide_drive_s;
434
435 struct ide_disk_ops {
436 int (*check)(struct ide_drive_s *, const char *);
437 int (*get_capacity)(struct ide_drive_s *);
438 void (*setup)(struct ide_drive_s *);
439 void (*flush)(struct ide_drive_s *);
440 int (*init_media)(struct ide_drive_s *, struct gendisk *);
441 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
442 int);
443 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
444 sector_t);
445 int (*ioctl)(struct ide_drive_s *, struct block_device *,
446 fmode_t, unsigned int, unsigned long);
447 };
448
449 /* ATAPI device flags */
450 enum {
451 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
452
453 /* ide-cd */
454 /* Drive cannot eject the disc. */
455 IDE_AFLAG_NO_EJECT = (1 << 1),
456 /* Drive is a pre ATAPI 1.2 drive. */
457 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
458 /* TOC addresses are in BCD. */
459 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
460 /* TOC track numbers are in BCD. */
461 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
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 /* id read from device (synthetic if not set) */
516 IDE_DFLAG_ID_READ = (1 << 8),
517 IDE_DFLAG_NOPROBE = (1 << 9),
518 /* need to do check_media_change() */
519 IDE_DFLAG_REMOVABLE = (1 << 10),
520 /* needed for removable devices */
521 IDE_DFLAG_ATTACH = (1 << 11),
522 IDE_DFLAG_FORCED_GEOM = (1 << 12),
523 /* disallow setting unmask bit */
524 IDE_DFLAG_NO_UNMASK = (1 << 13),
525 /* disallow enabling 32-bit I/O */
526 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
527 /* for removable only: door lock/unlock works */
528 IDE_DFLAG_DOORLOCKING = (1 << 15),
529 /* disallow DMA */
530 IDE_DFLAG_NODMA = (1 << 16),
531 /* powermanagment told us not to do anything, so sleep nicely */
532 IDE_DFLAG_BLOCKED = (1 << 17),
533 /* sleeping & sleep field valid */
534 IDE_DFLAG_SLEEPING = (1 << 18),
535 IDE_DFLAG_POST_RESET = (1 << 19),
536 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
537 IDE_DFLAG_LBA48 = (1 << 21),
538 /* status of write cache */
539 IDE_DFLAG_WCACHE = (1 << 22),
540 /* used for ignoring ATA_DF */
541 IDE_DFLAG_NOWERR = (1 << 23),
542 /* retrying in PIO */
543 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
544 IDE_DFLAG_LBA = (1 << 25),
545 /* don't unload heads */
546 IDE_DFLAG_NO_UNLOAD = (1 << 26),
547 /* heads unloaded, please don't reset port */
548 IDE_DFLAG_PARKED = (1 << 27),
549 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
550 /* write protect */
551 IDE_DFLAG_WP = (1 << 29),
552 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
553 };
554
555 struct ide_drive_s {
556 char name[4]; /* drive name, such as "hda" */
557 char driver_req[10]; /* requests specific driver */
558
559 struct request_queue *queue; /* request queue */
560
561 struct request *rq; /* current request */
562 void *driver_data; /* extra driver data */
563 u16 *id; /* identification info */
564 #ifdef CONFIG_IDE_PROC_FS
565 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
566 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
567 #endif
568 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
569
570 const struct ide_disk_ops *disk_ops;
571
572 unsigned long dev_flags;
573
574 unsigned long sleep; /* sleep until this time */
575 unsigned long timeout; /* max time to wait for irq */
576
577 special_t special; /* special action flags */
578
579 u8 select; /* basic drive/head select reg value */
580 u8 retry_pio; /* retrying dma capable host in pio */
581 u8 waiting_for_dma; /* dma currently in progress */
582 u8 dma; /* atapi dma flag */
583
584 u8 quirk_list; /* considered quirky, set for a specific host */
585 u8 init_speed; /* transfer rate set at boot */
586 u8 current_speed; /* current transfer rate set */
587 u8 desired_speed; /* desired transfer rate set */
588 u8 dn; /* now wide spread use */
589 u8 acoustic; /* acoustic management */
590 u8 media; /* disk, cdrom, tape, floppy, ... */
591 u8 ready_stat; /* min status value for drive ready */
592 u8 mult_count; /* current multiple sector setting */
593 u8 mult_req; /* requested multiple sector setting */
594 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
595 u8 bad_wstat; /* used for ignoring ATA_DF */
596 u8 head; /* "real" number of heads */
597 u8 sect; /* "real" sectors per track */
598 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
599 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
600
601 /* delay this long before sending packet command */
602 u8 pc_delay;
603
604 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
605 unsigned int cyl; /* "real" number of cyls */
606 unsigned int drive_data; /* used by set_pio_mode/dev_select() */
607 unsigned int failures; /* current failure count */
608 unsigned int max_failures; /* maximum allowed failure count */
609 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
610
611 u64 capacity64; /* total number of sectors */
612
613 int lun; /* logical unit */
614 int crc_count; /* crc counter to reduce drive speed */
615
616 unsigned long debug_mask; /* debugging levels switch */
617
618 #ifdef CONFIG_BLK_DEV_IDEACPI
619 struct ide_acpi_drive_link *acpidata;
620 #endif
621 struct list_head list;
622 struct device gendev;
623 struct completion gendev_rel_comp; /* to deal with device release() */
624
625 /* current packet command */
626 struct ide_atapi_pc *pc;
627
628 /* last failed packet command */
629 struct ide_atapi_pc *failed_pc;
630
631 /* callback for packet commands */
632 int (*pc_callback)(struct ide_drive_s *, int);
633
634 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
635 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
636 unsigned int, int);
637
638 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
639
640 unsigned long atapi_flags;
641
642 struct ide_atapi_pc request_sense_pc;
643 struct request request_sense_rq;
644 };
645
646 typedef struct ide_drive_s ide_drive_t;
647
648 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
649
650 #define to_ide_drv(obj, cont_type) \
651 container_of(obj, struct cont_type, dev)
652
653 #define ide_drv_g(disk, cont_type) \
654 container_of((disk)->private_data, struct cont_type, driver)
655
656 struct ide_port_info;
657
658 struct ide_tp_ops {
659 void (*exec_command)(struct hwif_s *, u8);
660 u8 (*read_status)(struct hwif_s *);
661 u8 (*read_altstatus)(struct hwif_s *);
662 void (*write_devctl)(struct hwif_s *, u8);
663
664 void (*dev_select)(ide_drive_t *);
665 void (*tf_load)(ide_drive_t *, struct ide_cmd *);
666 void (*tf_read)(ide_drive_t *, struct ide_cmd *);
667
668 void (*input_data)(ide_drive_t *, struct ide_cmd *,
669 void *, unsigned int);
670 void (*output_data)(ide_drive_t *, struct ide_cmd *,
671 void *, unsigned int);
672 };
673
674 extern const struct ide_tp_ops default_tp_ops;
675
676 /**
677 * struct ide_port_ops - IDE port operations
678 *
679 * @init_dev: host specific initialization of a device
680 * @set_pio_mode: routine to program host for PIO mode
681 * @set_dma_mode: routine to program host for DMA mode
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 int (*reset_poll)(ide_drive_t *);
699 void (*pre_reset)(ide_drive_t *);
700 void (*resetproc)(ide_drive_t *);
701 void (*maskproc)(ide_drive_t *, int);
702 void (*quirkproc)(ide_drive_t *);
703 void (*clear_irq)(ide_drive_t *);
704
705 u8 (*mdma_filter)(ide_drive_t *);
706 u8 (*udma_filter)(ide_drive_t *);
707
708 u8 (*cable_detect)(struct hwif_s *);
709 };
710
711 struct ide_dma_ops {
712 void (*dma_host_set)(struct ide_drive_s *, int);
713 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
714 void (*dma_start)(struct ide_drive_s *);
715 int (*dma_end)(struct ide_drive_s *);
716 int (*dma_test_irq)(struct ide_drive_s *);
717 void (*dma_lost_irq)(struct ide_drive_s *);
718 /* below ones are optional */
719 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
720 int (*dma_timer_expiry)(struct ide_drive_s *);
721 void (*dma_clear)(struct ide_drive_s *);
722 /*
723 * The following method is optional and only required to be
724 * implemented for the SFF-8038i compatible controllers.
725 */
726 u8 (*dma_sff_read_status)(struct hwif_s *);
727 };
728
729 struct ide_host;
730
731 typedef struct hwif_s {
732 struct hwif_s *mate; /* other hwif from same PCI chip */
733 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
734
735 struct ide_host *host;
736
737 char name[6]; /* name of interface, eg. "ide0" */
738
739 struct ide_io_ports io_ports;
740
741 unsigned long sata_scr[SATA_NR_PORTS];
742
743 ide_drive_t *devices[MAX_DRIVES + 1];
744
745 u8 major; /* our major number */
746 u8 index; /* 0 for ide0; 1 for ide1; ... */
747 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
748
749 u32 host_flags;
750
751 u8 pio_mask;
752
753 u8 ultra_mask;
754 u8 mwdma_mask;
755 u8 swdma_mask;
756
757 u8 cbl; /* cable type */
758
759 hwif_chipset_t chipset; /* sub-module for tuning.. */
760
761 struct device *dev;
762
763 ide_ack_intr_t *ack_intr;
764
765 void (*rw_disk)(ide_drive_t *, struct request *);
766
767 const struct ide_tp_ops *tp_ops;
768 const struct ide_port_ops *port_ops;
769 const struct ide_dma_ops *dma_ops;
770
771 /* dma physical region descriptor table (cpu view) */
772 unsigned int *dmatable_cpu;
773 /* dma physical region descriptor table (dma view) */
774 dma_addr_t dmatable_dma;
775
776 /* maximum number of PRD table entries */
777 int prd_max_nents;
778 /* PRD entry size in bytes */
779 int prd_ent_size;
780
781 /* Scatter-gather list used to build the above */
782 struct scatterlist *sg_table;
783 int sg_max_nents; /* Maximum number of entries in it */
784
785 struct ide_cmd cmd; /* current command */
786
787 int rqsize; /* max sectors per request */
788 int irq; /* our irq number */
789
790 unsigned long dma_base; /* base addr for dma ports */
791
792 unsigned long config_data; /* for use by chipset-specific code */
793 unsigned long select_data; /* for use by chipset-specific code */
794
795 unsigned long extra_base; /* extra addr for dma ports */
796 unsigned extra_ports; /* number of extra dma ports */
797
798 unsigned present : 1; /* this interface exists */
799 unsigned busy : 1; /* serializes devices on a port */
800
801 struct device gendev;
802 struct device *portdev;
803
804 struct completion gendev_rel_comp; /* To deal with device release() */
805
806 void *hwif_data; /* extra hwif data */
807
808 #ifdef CONFIG_BLK_DEV_IDEACPI
809 struct ide_acpi_hwif_link *acpidata;
810 #endif
811
812 /* IRQ handler, if active */
813 ide_startstop_t (*handler)(ide_drive_t *);
814
815 /* BOOL: polling active & poll_timeout field valid */
816 unsigned int polling : 1;
817
818 /* current drive */
819 ide_drive_t *cur_dev;
820
821 /* current request */
822 struct request *rq;
823
824 /* failsafe timer */
825 struct timer_list timer;
826 /* timeout value during long polls */
827 unsigned long poll_timeout;
828 /* queried upon timeouts */
829 int (*expiry)(ide_drive_t *);
830
831 int req_gen;
832 int req_gen_timer;
833
834 spinlock_t lock;
835 } ____cacheline_internodealigned_in_smp ide_hwif_t;
836
837 #define MAX_HOST_PORTS 4
838
839 struct ide_host {
840 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
841 unsigned int n_ports;
842 struct device *dev[2];
843
844 int (*init_chipset)(struct pci_dev *);
845
846 void (*get_lock)(irq_handler_t, void *);
847 void (*release_lock)(void);
848
849 irq_handler_t irq_handler;
850
851 unsigned long host_flags;
852
853 int irq_flags;
854
855 void *host_priv;
856 ide_hwif_t *cur_port; /* for hosts requiring serialization */
857
858 /* used for hosts requiring serialization */
859 volatile unsigned long host_busy;
860 };
861
862 #define IDE_HOST_BUSY 0
863
864 /*
865 * internal ide interrupt handler type
866 */
867 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
868 typedef int (ide_expiry_t)(ide_drive_t *);
869
870 /* used by ide-cd, ide-floppy, etc. */
871 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
872
873 extern struct mutex ide_setting_mtx;
874
875 /*
876 * configurable drive settings
877 */
878
879 #define DS_SYNC (1 << 0)
880
881 struct ide_devset {
882 int (*get)(ide_drive_t *);
883 int (*set)(ide_drive_t *, int);
884 unsigned int flags;
885 };
886
887 #define __DEVSET(_flags, _get, _set) { \
888 .flags = _flags, \
889 .get = _get, \
890 .set = _set, \
891 }
892
893 #define ide_devset_get(name, field) \
894 static int get_##name(ide_drive_t *drive) \
895 { \
896 return drive->field; \
897 }
898
899 #define ide_devset_set(name, field) \
900 static int set_##name(ide_drive_t *drive, int arg) \
901 { \
902 drive->field = arg; \
903 return 0; \
904 }
905
906 #define ide_devset_get_flag(name, flag) \
907 static int get_##name(ide_drive_t *drive) \
908 { \
909 return !!(drive->dev_flags & flag); \
910 }
911
912 #define ide_devset_set_flag(name, flag) \
913 static int set_##name(ide_drive_t *drive, int arg) \
914 { \
915 if (arg) \
916 drive->dev_flags |= flag; \
917 else \
918 drive->dev_flags &= ~flag; \
919 return 0; \
920 }
921
922 #define __IDE_DEVSET(_name, _flags, _get, _set) \
923 const struct ide_devset ide_devset_##_name = \
924 __DEVSET(_flags, _get, _set)
925
926 #define IDE_DEVSET(_name, _flags, _get, _set) \
927 static __IDE_DEVSET(_name, _flags, _get, _set)
928
929 #define ide_devset_rw(_name, _func) \
930 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
931
932 #define ide_devset_w(_name, _func) \
933 IDE_DEVSET(_name, 0, NULL, set_##_func)
934
935 #define ide_ext_devset_rw(_name, _func) \
936 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
937
938 #define ide_ext_devset_rw_sync(_name, _func) \
939 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
940
941 #define ide_decl_devset(_name) \
942 extern const struct ide_devset ide_devset_##_name
943
944 ide_decl_devset(io_32bit);
945 ide_decl_devset(keepsettings);
946 ide_decl_devset(pio_mode);
947 ide_decl_devset(unmaskirq);
948 ide_decl_devset(using_dma);
949
950 #ifdef CONFIG_IDE_PROC_FS
951 /*
952 * /proc/ide interface
953 */
954
955 #define ide_devset_rw_field(_name, _field) \
956 ide_devset_get(_name, _field); \
957 ide_devset_set(_name, _field); \
958 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
959
960 #define ide_devset_rw_flag(_name, _field) \
961 ide_devset_get_flag(_name, _field); \
962 ide_devset_set_flag(_name, _field); \
963 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
964
965 struct ide_proc_devset {
966 const char *name;
967 const struct ide_devset *setting;
968 int min, max;
969 int (*mulf)(ide_drive_t *);
970 int (*divf)(ide_drive_t *);
971 };
972
973 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
974 .name = __stringify(_name), \
975 .setting = &ide_devset_##_name, \
976 .min = _min, \
977 .max = _max, \
978 .mulf = _mulf, \
979 .divf = _divf, \
980 }
981
982 #define IDE_PROC_DEVSET(_name, _min, _max) \
983 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
984
985 typedef struct {
986 const char *name;
987 mode_t mode;
988 read_proc_t *read_proc;
989 write_proc_t *write_proc;
990 } ide_proc_entry_t;
991
992 void proc_ide_create(void);
993 void proc_ide_destroy(void);
994 void ide_proc_register_port(ide_hwif_t *);
995 void ide_proc_port_register_devices(ide_hwif_t *);
996 void ide_proc_unregister_device(ide_drive_t *);
997 void ide_proc_unregister_port(ide_hwif_t *);
998 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
999 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
1000
1001 read_proc_t proc_ide_read_capacity;
1002 read_proc_t proc_ide_read_geometry;
1003
1004 /*
1005 * Standard exit stuff:
1006 */
1007 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1008 { \
1009 len -= off; \
1010 if (len < count) { \
1011 *eof = 1; \
1012 if (len <= 0) \
1013 return 0; \
1014 } else \
1015 len = count; \
1016 *start = page + off; \
1017 return len; \
1018 }
1019 #else
1020 static inline void proc_ide_create(void) { ; }
1021 static inline void proc_ide_destroy(void) { ; }
1022 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1023 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1024 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1025 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1026 static inline void ide_proc_register_driver(ide_drive_t *drive,
1027 struct ide_driver *driver) { ; }
1028 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1029 struct ide_driver *driver) { ; }
1030 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1031 #endif
1032
1033 enum {
1034 /* enter/exit functions */
1035 IDE_DBG_FUNC = (1 << 0),
1036 /* sense key/asc handling */
1037 IDE_DBG_SENSE = (1 << 1),
1038 /* packet commands handling */
1039 IDE_DBG_PC = (1 << 2),
1040 /* request handling */
1041 IDE_DBG_RQ = (1 << 3),
1042 /* driver probing/setup */
1043 IDE_DBG_PROBE = (1 << 4),
1044 };
1045
1046 /* DRV_NAME has to be defined in the driver before using the macro below */
1047 #define __ide_debug_log(lvl, fmt, args...) \
1048 { \
1049 if (unlikely(drive->debug_mask & lvl)) \
1050 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1051 __func__, ## 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_rq(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 struct device_driver gen_driver;
1103 int (*probe)(ide_drive_t *);
1104 void (*remove)(ide_drive_t *);
1105 void (*resume)(ide_drive_t *);
1106 void (*shutdown)(ide_drive_t *);
1107 #ifdef CONFIG_IDE_PROC_FS
1108 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1109 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1110 #endif
1111 };
1112
1113 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1114
1115 int ide_device_get(ide_drive_t *);
1116 void ide_device_put(ide_drive_t *);
1117
1118 struct ide_ioctl_devset {
1119 unsigned int get_ioctl;
1120 unsigned int set_ioctl;
1121 const struct ide_devset *setting;
1122 };
1123
1124 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1125 unsigned long, const struct ide_ioctl_devset *);
1126
1127 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1128
1129 extern int ide_vlb_clk;
1130 extern int ide_pci_clk;
1131
1132 unsigned int ide_rq_bytes(struct request *);
1133 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1134 void ide_kill_rq(ide_drive_t *, struct request *);
1135
1136 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1137 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1138
1139 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1140 unsigned int);
1141
1142 void ide_pad_transfer(ide_drive_t *, int, int);
1143
1144 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1145
1146 void ide_fix_driveid(u16 *);
1147
1148 extern void ide_fixstring(u8 *, const int, const int);
1149
1150 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1151
1152 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1153
1154 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1155 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1156
1157 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1158
1159 extern int ide_devset_execute(ide_drive_t *drive,
1160 const struct ide_devset *setting, int arg);
1161
1162 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1163 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1164
1165 void ide_tf_dump(const char *, struct ide_taskfile *);
1166
1167 void ide_exec_command(ide_hwif_t *, u8);
1168 u8 ide_read_status(ide_hwif_t *);
1169 u8 ide_read_altstatus(ide_hwif_t *);
1170 void ide_write_devctl(ide_hwif_t *, u8);
1171
1172 void ide_dev_select(ide_drive_t *);
1173 void ide_tf_load(ide_drive_t *, struct ide_cmd *);
1174 void ide_tf_read(ide_drive_t *, struct ide_cmd *);
1175
1176 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1177 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1178
1179 extern void SELECT_DRIVE(ide_drive_t *);
1180 void SELECT_MASK(ide_drive_t *, int);
1181
1182 u8 ide_read_error(ide_drive_t *);
1183 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1184
1185 int ide_check_atapi_device(ide_drive_t *, const char *);
1186
1187 void ide_init_pc(struct ide_atapi_pc *);
1188
1189 /* Disk head parking */
1190 extern wait_queue_head_t ide_park_wq;
1191 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1192 char *buf);
1193 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1194 const char *buf, size_t len);
1195
1196 /*
1197 * Special requests for ide-tape block device strategy routine.
1198 *
1199 * In order to service a character device command, we add special requests to
1200 * the tail of our block device request queue and wait for their completion.
1201 */
1202 enum {
1203 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1204 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1205 REQ_IDETAPE_READ = (1 << 2),
1206 REQ_IDETAPE_WRITE = (1 << 3),
1207 };
1208
1209 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1210
1211 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1212 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1213 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1214 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1215 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1216
1217 int ide_cd_expiry(ide_drive_t *);
1218
1219 int ide_cd_get_xferlen(struct request *);
1220
1221 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1222
1223 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1224
1225 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1226
1227 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1228
1229 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1230 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1231
1232 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1233
1234 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1235
1236 extern int ide_driveid_update(ide_drive_t *);
1237 extern int ide_config_drive_speed(ide_drive_t *, u8);
1238 extern u8 eighty_ninty_three (ide_drive_t *);
1239 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1240
1241 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1242
1243 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1244
1245 extern void ide_timer_expiry(unsigned long);
1246 extern irqreturn_t ide_intr(int irq, void *dev_id);
1247 extern void do_ide_request(struct request_queue *);
1248
1249 void ide_init_disk(struct gendisk *, ide_drive_t *);
1250
1251 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1252 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1253 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1254 #else
1255 #define ide_pci_register_driver(d) pci_register_driver(d)
1256 #endif
1257
1258 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1259 {
1260 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1261 return 1;
1262 return 0;
1263 }
1264
1265 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1266 hw_regs_t *, hw_regs_t **);
1267 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1268
1269 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1270 int ide_pci_set_master(struct pci_dev *, const char *);
1271 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1272 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1273 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1274 #else
1275 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1276 const struct ide_port_info *d)
1277 {
1278 return -EINVAL;
1279 }
1280 #endif
1281
1282 struct ide_pci_enablebit {
1283 u8 reg; /* byte pci reg holding the enable-bit */
1284 u8 mask; /* mask to isolate the enable-bit */
1285 u8 val; /* value of masked reg when "enabled" */
1286 };
1287
1288 enum {
1289 /* Uses ISA control ports not PCI ones. */
1290 IDE_HFLAG_ISA_PORTS = (1 << 0),
1291 /* single port device */
1292 IDE_HFLAG_SINGLE = (1 << 1),
1293 /* don't use legacy PIO blacklist */
1294 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1295 /* set for the second port of QD65xx */
1296 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1297 /* use PIO8/9 for prefetch off/on */
1298 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1299 /* use PIO6/7 for fast-devsel off/on */
1300 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1301 /* use 100-102 and 200-202 PIO values to set DMA modes */
1302 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1303 /*
1304 * keep DMA setting when programming PIO mode, may be used only
1305 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1306 */
1307 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1308 /* program host for the transfer mode after programming device */
1309 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1310 /* don't program host/device for the transfer mode ("smart" hosts) */
1311 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1312 /* trust BIOS for programming chipset/device for DMA */
1313 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1314 /* host is CS5510/CS5520 */
1315 IDE_HFLAG_CS5520 = (1 << 11),
1316 /* ATAPI DMA is unsupported */
1317 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1318 /* set if host is a "non-bootable" controller */
1319 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1320 /* host doesn't support DMA */
1321 IDE_HFLAG_NO_DMA = (1 << 14),
1322 /* check if host is PCI IDE device before allowing DMA */
1323 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1324 /* host uses MMIO */
1325 IDE_HFLAG_MMIO = (1 << 16),
1326 /* no LBA48 */
1327 IDE_HFLAG_NO_LBA48 = (1 << 17),
1328 /* no LBA48 DMA */
1329 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1330 /* data FIFO is cleared by an error */
1331 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1332 /* serialize ports */
1333 IDE_HFLAG_SERIALIZE = (1 << 20),
1334 /* host is DTC2278 */
1335 IDE_HFLAG_DTC2278 = (1 << 21),
1336 /* 4 devices on a single set of I/O ports */
1337 IDE_HFLAG_4DRIVES = (1 << 22),
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
1366 int (*init_chipset)(struct pci_dev *);
1367
1368 void (*get_lock)(irq_handler_t, void *);
1369 void (*release_lock)(void);
1370
1371 void (*init_iops)(ide_hwif_t *);
1372 void (*init_hwif)(ide_hwif_t *);
1373 int (*init_dma)(ide_hwif_t *,
1374 const struct ide_port_info *);
1375
1376 const struct ide_tp_ops *tp_ops;
1377 const struct ide_port_ops *port_ops;
1378 const struct ide_dma_ops *dma_ops;
1379
1380 struct ide_pci_enablebit enablebits[2];
1381
1382 hwif_chipset_t chipset;
1383
1384 u16 max_sectors; /* if < than the default one */
1385
1386 u32 host_flags;
1387
1388 int irq_flags;
1389
1390 u8 pio_mask;
1391 u8 swdma_mask;
1392 u8 mwdma_mask;
1393 u8 udma_mask;
1394 };
1395
1396 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1397 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1398 const struct ide_port_info *, void *);
1399 void ide_pci_remove(struct pci_dev *);
1400
1401 #ifdef CONFIG_PM
1402 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1403 int ide_pci_resume(struct pci_dev *);
1404 #else
1405 #define ide_pci_suspend NULL
1406 #define ide_pci_resume NULL
1407 #endif
1408
1409 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1410 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1411
1412 #define BAD_DMA_DRIVE 0
1413 #define GOOD_DMA_DRIVE 1
1414
1415 struct drive_list_entry {
1416 const char *id_model;
1417 const char *id_firmware;
1418 };
1419
1420 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1421
1422 #ifdef CONFIG_BLK_DEV_IDEDMA
1423 int ide_dma_good_drive(ide_drive_t *);
1424 int __ide_dma_bad_drive(ide_drive_t *);
1425 int ide_id_dma_bug(ide_drive_t *);
1426
1427 u8 ide_find_dma_mode(ide_drive_t *, u8);
1428
1429 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1430 {
1431 return ide_find_dma_mode(drive, XFER_UDMA_6);
1432 }
1433
1434 void ide_dma_off_quietly(ide_drive_t *);
1435 void ide_dma_off(ide_drive_t *);
1436 void ide_dma_on(ide_drive_t *);
1437 int ide_set_dma(ide_drive_t *);
1438 void ide_check_dma_crc(ide_drive_t *);
1439 ide_startstop_t ide_dma_intr(ide_drive_t *);
1440
1441 int ide_allocate_dma_engine(ide_hwif_t *);
1442 void ide_release_dma_engine(ide_hwif_t *);
1443
1444 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1445 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1446
1447 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1448 int config_drive_for_dma(ide_drive_t *);
1449 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1450 void ide_dma_host_set(ide_drive_t *, int);
1451 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1452 extern void ide_dma_start(ide_drive_t *);
1453 int ide_dma_end(ide_drive_t *);
1454 int ide_dma_test_irq(ide_drive_t *);
1455 int ide_dma_sff_timer_expiry(ide_drive_t *);
1456 u8 ide_dma_sff_read_status(ide_hwif_t *);
1457 extern const struct ide_dma_ops sff_dma_ops;
1458 #else
1459 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1460 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1461
1462 void ide_dma_lost_irq(ide_drive_t *);
1463 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1464
1465 #else
1466 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1467 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1468 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1469 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1470 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1471 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1472 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1473 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1474 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1475 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1476 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1477 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1478 static inline int ide_dma_prepare(ide_drive_t *drive,
1479 struct ide_cmd *cmd) { return 1; }
1480 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1481 struct ide_cmd *cmd) { ; }
1482 #endif /* CONFIG_BLK_DEV_IDEDMA */
1483
1484 #ifdef CONFIG_BLK_DEV_IDEACPI
1485 int ide_acpi_init(void);
1486 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1487 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1488 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1489 void ide_acpi_init_port(ide_hwif_t *);
1490 void ide_acpi_port_init_devices(ide_hwif_t *);
1491 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1492 #else
1493 static inline int ide_acpi_init(void) { return 0; }
1494 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1495 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1496 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1497 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1498 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1499 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1500 #endif
1501
1502 void ide_register_region(struct gendisk *);
1503 void ide_unregister_region(struct gendisk *);
1504
1505 void ide_undecoded_slave(ide_drive_t *);
1506
1507 void ide_port_apply_params(ide_hwif_t *);
1508 int ide_sysfs_register_port(ide_hwif_t *);
1509
1510 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1511 void ide_host_free(struct ide_host *);
1512 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1513 hw_regs_t **);
1514 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1515 struct ide_host **);
1516 void ide_host_remove(struct ide_host *);
1517 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1518 void ide_port_unregister_devices(ide_hwif_t *);
1519 void ide_port_scan(ide_hwif_t *);
1520
1521 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1522 {
1523 return hwif->hwif_data;
1524 }
1525
1526 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1527 {
1528 hwif->hwif_data = data;
1529 }
1530
1531 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1532
1533 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1534 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1535
1536 struct ide_timing {
1537 u8 mode;
1538 u8 setup; /* t1 */
1539 u16 act8b; /* t2 for 8-bit io */
1540 u16 rec8b; /* t2i for 8-bit io */
1541 u16 cyc8b; /* t0 for 8-bit io */
1542 u16 active; /* t2 or tD */
1543 u16 recover; /* t2i or tK */
1544 u16 cycle; /* t0 */
1545 u16 udma; /* t2CYCTYP/2 */
1546 };
1547
1548 enum {
1549 IDE_TIMING_SETUP = (1 << 0),
1550 IDE_TIMING_ACT8B = (1 << 1),
1551 IDE_TIMING_REC8B = (1 << 2),
1552 IDE_TIMING_CYC8B = (1 << 3),
1553 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1554 IDE_TIMING_CYC8B,
1555 IDE_TIMING_ACTIVE = (1 << 4),
1556 IDE_TIMING_RECOVER = (1 << 5),
1557 IDE_TIMING_CYCLE = (1 << 6),
1558 IDE_TIMING_UDMA = (1 << 7),
1559 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1560 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1561 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1562 };
1563
1564 struct ide_timing *ide_timing_find_mode(u8);
1565 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1566 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1567 struct ide_timing *, unsigned int);
1568 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1569
1570 #ifdef CONFIG_IDE_XFER_MODE
1571 int ide_scan_pio_blacklist(char *);
1572 const char *ide_xfer_verbose(u8);
1573 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1574 int ide_set_pio_mode(ide_drive_t *, u8);
1575 int ide_set_dma_mode(ide_drive_t *, u8);
1576 void ide_set_pio(ide_drive_t *, u8);
1577 int ide_set_xfer_rate(ide_drive_t *, u8);
1578 #else
1579 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1580 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1581 #endif
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_port_for_each_present_dev(i, dev, port) \
1615 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1616 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1617
1618 #define ide_host_for_each_port(i, port, host) \
1619 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1620
1621 #endif /* _IDE_H */
WandBoard kernel