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ide: remove ->end_request method
[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 /* 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_FEATURE = (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_FEATURE |
277 IDE_TFLAG_IN_HOB_NSECT |
278 IDE_TFLAG_IN_HOB_LBA,
279 IDE_TFLAG_IN_FEATURE = (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 /* ide_task_t was allocated using kmalloc() */
299 IDE_TFLAG_DYN = (1 << 27),
300 };
301
302 enum {
303 IDE_FTFLAG_FLAGGED = (1 << 0),
304 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
305 IDE_FTFLAG_OUT_DATA = (1 << 2),
306 IDE_FTFLAG_IN_DATA = (1 << 3),
307 };
308
309 struct ide_taskfile {
310 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
311
312 u8 hob_feature; /* 1-5: additional data to support LBA48 */
313 u8 hob_nsect;
314 u8 hob_lbal;
315 u8 hob_lbam;
316 u8 hob_lbah;
317
318 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
319
320 union { /*  7: */
321 u8 error; /* read: error */
322 u8 feature; /* write: feature */
323 };
324
325 u8 nsect; /* 8: number of sectors */
326 u8 lbal; /* 9: LBA low */
327 u8 lbam; /* 10: LBA mid */
328 u8 lbah; /* 11: LBA high */
329
330 u8 device; /* 12: device select */
331
332 union { /* 13: */
333 u8 status; /*  read: status  */
334 u8 command; /* write: command */
335 };
336 };
337
338 typedef struct ide_task_s {
339 union {
340 struct ide_taskfile tf;
341 u8 tf_array[14];
342 };
343 u8 ftf_flags; /* for TASKFILE ioctl */
344 u32 tf_flags;
345 int data_phase;
346 struct request *rq; /* copy of request */
347 void *special; /* valid_t generally */
348 } ide_task_t;
349
350 /* ATAPI packet command flags */
351 enum {
352 /* set when an error is considered normal - no retry (ide-tape) */
353 PC_FLAG_ABORT = (1 << 0),
354 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
355 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
356 PC_FLAG_DMA_OK = (1 << 3),
357 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
358 PC_FLAG_DMA_ERROR = (1 << 5),
359 PC_FLAG_WRITING = (1 << 6),
360 };
361
362 /*
363 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
364 * This is used for several packet commands (not for READ/WRITE commands).
365 */
366 #define IDE_PC_BUFFER_SIZE 256
367 #define ATAPI_WAIT_PC (60 * HZ)
368
369 struct ide_atapi_pc {
370 /* actual packet bytes */
371 u8 c[12];
372 /* incremented on each retry */
373 int retries;
374 int error;
375
376 /* bytes to transfer */
377 int req_xfer;
378 /* bytes actually transferred */
379 int xferred;
380
381 /* data buffer */
382 u8 *buf;
383 /* current buffer position */
384 u8 *cur_pos;
385 int buf_size;
386 /* missing/available data on the current buffer */
387 int b_count;
388
389 /* the corresponding request */
390 struct request *rq;
391
392 unsigned long flags;
393
394 /*
395 * those are more or less driver-specific and some of them are subject
396 * to change/removal later.
397 */
398 u8 pc_buf[IDE_PC_BUFFER_SIZE];
399
400 /* idetape only */
401 struct idetape_bh *bh;
402 char *b_data;
403
404 struct scatterlist *sg;
405 unsigned int sg_cnt;
406
407 unsigned long timeout;
408 };
409
410 struct ide_devset;
411 struct ide_driver;
412
413 #ifdef CONFIG_BLK_DEV_IDEACPI
414 struct ide_acpi_drive_link;
415 struct ide_acpi_hwif_link;
416 #endif
417
418 struct ide_drive_s;
419
420 struct ide_disk_ops {
421 int (*check)(struct ide_drive_s *, const char *);
422 int (*get_capacity)(struct ide_drive_s *);
423 void (*setup)(struct ide_drive_s *);
424 void (*flush)(struct ide_drive_s *);
425 int (*init_media)(struct ide_drive_s *, struct gendisk *);
426 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
427 int);
428 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
429 sector_t);
430 int (*ioctl)(struct ide_drive_s *, struct block_device *,
431 fmode_t, unsigned int, unsigned long);
432 };
433
434 /* ATAPI device flags */
435 enum {
436 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
437
438 /* ide-cd */
439 /* Drive cannot eject the disc. */
440 IDE_AFLAG_NO_EJECT = (1 << 1),
441 /* Drive is a pre ATAPI 1.2 drive. */
442 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
443 /* TOC addresses are in BCD. */
444 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
445 /* TOC track numbers are in BCD. */
446 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
447 /*
448 * Drive does not provide data in multiples of SECTOR_SIZE
449 * when more than one interrupt is needed.
450 */
451 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
452 /* Saved TOC information is current. */
453 IDE_AFLAG_TOC_VALID = (1 << 6),
454 /* We think that the drive door is locked. */
455 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
456 /* SET_CD_SPEED command is unsupported. */
457 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
458 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
459 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
460 IDE_AFLAG_SANYO_3CD = (1 << 11),
461 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
462 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
463 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
464
465 /* ide-floppy */
466 /* Avoid commands not supported in Clik drive */
467 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
468 /* Requires BH algorithm for packets */
469 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
470 /* Supports format progress report */
471 IDE_AFLAG_SRFP = (1 << 17),
472
473 /* ide-tape */
474 IDE_AFLAG_IGNORE_DSC = (1 << 18),
475 /* 0 When the tape position is unknown */
476 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
477 /* Device already opened */
478 IDE_AFLAG_BUSY = (1 << 20),
479 /* Attempt to auto-detect the current user block size */
480 IDE_AFLAG_DETECT_BS = (1 << 21),
481 /* Currently on a filemark */
482 IDE_AFLAG_FILEMARK = (1 << 22),
483 /* 0 = no tape is loaded, so we don't rewind after ejecting */
484 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
485
486 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
487 };
488
489 /* device flags */
490 enum {
491 /* restore settings after device reset */
492 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
493 /* device is using DMA for read/write */
494 IDE_DFLAG_USING_DMA = (1 << 1),
495 /* okay to unmask other IRQs */
496 IDE_DFLAG_UNMASK = (1 << 2),
497 /* don't attempt flushes */
498 IDE_DFLAG_NOFLUSH = (1 << 3),
499 /* DSC overlap */
500 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
501 /* give potential excess bandwidth */
502 IDE_DFLAG_NICE1 = (1 << 5),
503 /* device is physically present */
504 IDE_DFLAG_PRESENT = (1 << 6),
505 /* id read from device (synthetic if not set) */
506 IDE_DFLAG_ID_READ = (1 << 8),
507 IDE_DFLAG_NOPROBE = (1 << 9),
508 /* need to do check_media_change() */
509 IDE_DFLAG_REMOVABLE = (1 << 10),
510 /* needed for removable devices */
511 IDE_DFLAG_ATTACH = (1 << 11),
512 IDE_DFLAG_FORCED_GEOM = (1 << 12),
513 /* disallow setting unmask bit */
514 IDE_DFLAG_NO_UNMASK = (1 << 13),
515 /* disallow enabling 32-bit I/O */
516 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
517 /* for removable only: door lock/unlock works */
518 IDE_DFLAG_DOORLOCKING = (1 << 15),
519 /* disallow DMA */
520 IDE_DFLAG_NODMA = (1 << 16),
521 /* powermanagment told us not to do anything, so sleep nicely */
522 IDE_DFLAG_BLOCKED = (1 << 17),
523 /* sleeping & sleep field valid */
524 IDE_DFLAG_SLEEPING = (1 << 18),
525 IDE_DFLAG_POST_RESET = (1 << 19),
526 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
527 IDE_DFLAG_LBA48 = (1 << 21),
528 /* status of write cache */
529 IDE_DFLAG_WCACHE = (1 << 22),
530 /* used for ignoring ATA_DF */
531 IDE_DFLAG_NOWERR = (1 << 23),
532 /* retrying in PIO */
533 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
534 IDE_DFLAG_LBA = (1 << 25),
535 /* don't unload heads */
536 IDE_DFLAG_NO_UNLOAD = (1 << 26),
537 /* heads unloaded, please don't reset port */
538 IDE_DFLAG_PARKED = (1 << 27),
539 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
540 /* write protect */
541 IDE_DFLAG_WP = (1 << 29),
542 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
543 };
544
545 struct ide_drive_s {
546 char name[4]; /* drive name, such as "hda" */
547 char driver_req[10]; /* requests specific driver */
548
549 struct request_queue *queue; /* request queue */
550
551 struct request *rq; /* current request */
552 void *driver_data; /* extra driver data */
553 u16 *id; /* identification info */
554 #ifdef CONFIG_IDE_PROC_FS
555 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
556 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
557 #endif
558 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
559
560 const struct ide_disk_ops *disk_ops;
561
562 unsigned long dev_flags;
563
564 unsigned long sleep; /* sleep until this time */
565 unsigned long timeout; /* max time to wait for irq */
566
567 special_t special; /* special action flags */
568
569 u8 select; /* basic drive/head select reg value */
570 u8 retry_pio; /* retrying dma capable host in pio */
571 u8 waiting_for_dma; /* dma currently in progress */
572 u8 dma; /* atapi dma flag */
573
574 u8 quirk_list; /* considered quirky, set for a specific host */
575 u8 init_speed; /* transfer rate set at boot */
576 u8 current_speed; /* current transfer rate set */
577 u8 desired_speed; /* desired transfer rate set */
578 u8 dn; /* now wide spread use */
579 u8 acoustic; /* acoustic management */
580 u8 media; /* disk, cdrom, tape, floppy, ... */
581 u8 ready_stat; /* min status value for drive ready */
582 u8 mult_count; /* current multiple sector setting */
583 u8 mult_req; /* requested multiple sector setting */
584 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
585 u8 bad_wstat; /* used for ignoring ATA_DF */
586 u8 head; /* "real" number of heads */
587 u8 sect; /* "real" sectors per track */
588 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
589 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
590
591 /* delay this long before sending packet command */
592 u8 pc_delay;
593
594 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
595 unsigned int cyl; /* "real" number of cyls */
596 unsigned int drive_data; /* used by set_pio_mode/selectproc */
597 unsigned int failures; /* current failure count */
598 unsigned int max_failures; /* maximum allowed failure count */
599 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
600
601 u64 capacity64; /* total number of sectors */
602
603 int lun; /* logical unit */
604 int crc_count; /* crc counter to reduce drive speed */
605
606 unsigned long debug_mask; /* debugging levels switch */
607
608 #ifdef CONFIG_BLK_DEV_IDEACPI
609 struct ide_acpi_drive_link *acpidata;
610 #endif
611 struct list_head list;
612 struct device gendev;
613 struct completion gendev_rel_comp; /* to deal with device release() */
614
615 /* current packet command */
616 struct ide_atapi_pc *pc;
617
618 /* last failed packet command */
619 struct ide_atapi_pc *failed_pc;
620
621 /* callback for packet commands */
622 void (*pc_callback)(struct ide_drive_s *, int);
623
624 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
625 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
626 unsigned int, int);
627
628 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
629
630 unsigned long atapi_flags;
631
632 struct ide_atapi_pc request_sense_pc;
633 struct request request_sense_rq;
634 };
635
636 typedef struct ide_drive_s ide_drive_t;
637
638 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
639
640 #define to_ide_drv(obj, cont_type) \
641 container_of(obj, struct cont_type, dev)
642
643 #define ide_drv_g(disk, cont_type) \
644 container_of((disk)->private_data, struct cont_type, driver)
645
646 struct ide_port_info;
647
648 struct ide_tp_ops {
649 void (*exec_command)(struct hwif_s *, u8);
650 u8 (*read_status)(struct hwif_s *);
651 u8 (*read_altstatus)(struct hwif_s *);
652
653 void (*set_irq)(struct hwif_s *, int);
654
655 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
656 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
657
658 void (*input_data)(ide_drive_t *, struct request *, void *,
659 unsigned int);
660 void (*output_data)(ide_drive_t *, struct request *, void *,
661 unsigned int);
662 };
663
664 extern const struct ide_tp_ops default_tp_ops;
665
666 /**
667 * struct ide_port_ops - IDE port operations
668 *
669 * @init_dev: host specific initialization of a device
670 * @set_pio_mode: routine to program host for PIO mode
671 * @set_dma_mode: routine to program host for DMA mode
672 * @selectproc: tweaks hardware to select drive
673 * @reset_poll: chipset polling based on hba specifics
674 * @pre_reset: chipset specific changes to default for device-hba resets
675 * @resetproc: routine to reset controller after a disk reset
676 * @maskproc: special host masking for drive selection
677 * @quirkproc: check host's drive quirk list
678 * @clear_irq: clear IRQ
679 *
680 * @mdma_filter: filter MDMA modes
681 * @udma_filter: filter UDMA modes
682 *
683 * @cable_detect: detect cable type
684 */
685 struct ide_port_ops {
686 void (*init_dev)(ide_drive_t *);
687 void (*set_pio_mode)(ide_drive_t *, const u8);
688 void (*set_dma_mode)(ide_drive_t *, const u8);
689 void (*selectproc)(ide_drive_t *);
690 int (*reset_poll)(ide_drive_t *);
691 void (*pre_reset)(ide_drive_t *);
692 void (*resetproc)(ide_drive_t *);
693 void (*maskproc)(ide_drive_t *, int);
694 void (*quirkproc)(ide_drive_t *);
695 void (*clear_irq)(ide_drive_t *);
696
697 u8 (*mdma_filter)(ide_drive_t *);
698 u8 (*udma_filter)(ide_drive_t *);
699
700 u8 (*cable_detect)(struct hwif_s *);
701 };
702
703 struct ide_dma_ops {
704 void (*dma_host_set)(struct ide_drive_s *, int);
705 int (*dma_setup)(struct ide_drive_s *);
706 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
707 void (*dma_start)(struct ide_drive_s *);
708 int (*dma_end)(struct ide_drive_s *);
709 int (*dma_test_irq)(struct ide_drive_s *);
710 void (*dma_lost_irq)(struct ide_drive_s *);
711 void (*dma_timeout)(struct ide_drive_s *);
712 /*
713 * The following method is optional and only required to be
714 * implemented for the SFF-8038i compatible controllers.
715 */
716 u8 (*dma_sff_read_status)(struct hwif_s *);
717 };
718
719 struct ide_host;
720
721 typedef struct hwif_s {
722 struct hwif_s *mate; /* other hwif from same PCI chip */
723 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
724
725 struct ide_host *host;
726
727 char name[6]; /* name of interface, eg. "ide0" */
728
729 struct ide_io_ports io_ports;
730
731 unsigned long sata_scr[SATA_NR_PORTS];
732
733 ide_drive_t *devices[MAX_DRIVES + 1];
734
735 u8 major; /* our major number */
736 u8 index; /* 0 for ide0; 1 for ide1; ... */
737 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
738
739 u32 host_flags;
740
741 u8 pio_mask;
742
743 u8 ultra_mask;
744 u8 mwdma_mask;
745 u8 swdma_mask;
746
747 u8 cbl; /* cable type */
748
749 hwif_chipset_t chipset; /* sub-module for tuning.. */
750
751 struct device *dev;
752
753 ide_ack_intr_t *ack_intr;
754
755 void (*rw_disk)(ide_drive_t *, struct request *);
756
757 const struct ide_tp_ops *tp_ops;
758 const struct ide_port_ops *port_ops;
759 const struct ide_dma_ops *dma_ops;
760
761 /* dma physical region descriptor table (cpu view) */
762 unsigned int *dmatable_cpu;
763 /* dma physical region descriptor table (dma view) */
764 dma_addr_t dmatable_dma;
765
766 /* maximum number of PRD table entries */
767 int prd_max_nents;
768 /* PRD entry size in bytes */
769 int prd_ent_size;
770
771 /* Scatter-gather list used to build the above */
772 struct scatterlist *sg_table;
773 int sg_max_nents; /* Maximum number of entries in it */
774 int sg_nents; /* Current number of entries in it */
775 int orig_sg_nents;
776 int sg_dma_direction; /* dma transfer direction */
777
778 struct ide_task_s task; /* current command */
779
780 unsigned int nsect;
781 unsigned int nleft;
782 struct scatterlist *cursg;
783 unsigned int cursg_ofs;
784
785 int rqsize; /* max sectors per request */
786 int irq; /* our irq number */
787
788 unsigned long dma_base; /* base addr for dma ports */
789
790 unsigned long config_data; /* for use by chipset-specific code */
791 unsigned long select_data; /* for use by chipset-specific code */
792
793 unsigned long extra_base; /* extra addr for dma ports */
794 unsigned extra_ports; /* number of extra dma ports */
795
796 unsigned present : 1; /* this interface exists */
797 unsigned busy : 1; /* serializes devices on a port */
798
799 struct device gendev;
800 struct device *portdev;
801
802 struct completion gendev_rel_comp; /* To deal with device release() */
803
804 void *hwif_data; /* extra hwif data */
805
806 #ifdef CONFIG_BLK_DEV_IDEACPI
807 struct ide_acpi_hwif_link *acpidata;
808 #endif
809
810 /* IRQ handler, if active */
811 ide_startstop_t (*handler)(ide_drive_t *);
812
813 /* BOOL: polling active & poll_timeout field valid */
814 unsigned int polling : 1;
815
816 /* current drive */
817 ide_drive_t *cur_dev;
818
819 /* current request */
820 struct request *rq;
821
822 /* failsafe timer */
823 struct timer_list timer;
824 /* timeout value during long polls */
825 unsigned long poll_timeout;
826 /* queried upon timeouts */
827 int (*expiry)(ide_drive_t *);
828
829 int req_gen;
830 int req_gen_timer;
831
832 spinlock_t lock;
833 } ____cacheline_internodealigned_in_smp ide_hwif_t;
834
835 #define MAX_HOST_PORTS 4
836
837 struct ide_host {
838 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
839 unsigned int n_ports;
840 struct device *dev[2];
841
842 int (*init_chipset)(struct pci_dev *);
843
844 void (*get_lock)(irq_handler_t, void *);
845 void (*release_lock)(void);
846
847 irq_handler_t irq_handler;
848
849 unsigned long host_flags;
850
851 int irq_flags;
852
853 void *host_priv;
854 ide_hwif_t *cur_port; /* for hosts requiring serialization */
855
856 /* used for hosts requiring serialization */
857 volatile unsigned long host_busy;
858 };
859
860 #define IDE_HOST_BUSY 0
861
862 /*
863 * internal ide interrupt handler type
864 */
865 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
866 typedef int (ide_expiry_t)(ide_drive_t *);
867
868 /* used by ide-cd, ide-floppy, etc. */
869 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
870
871 extern struct mutex ide_setting_mtx;
872
873 /*
874 * configurable drive settings
875 */
876
877 #define DS_SYNC (1 << 0)
878
879 struct ide_devset {
880 int (*get)(ide_drive_t *);
881 int (*set)(ide_drive_t *, int);
882 unsigned int flags;
883 };
884
885 #define __DEVSET(_flags, _get, _set) { \
886 .flags = _flags, \
887 .get = _get, \
888 .set = _set, \
889 }
890
891 #define ide_devset_get(name, field) \
892 static int get_##name(ide_drive_t *drive) \
893 { \
894 return drive->field; \
895 }
896
897 #define ide_devset_set(name, field) \
898 static int set_##name(ide_drive_t *drive, int arg) \
899 { \
900 drive->field = arg; \
901 return 0; \
902 }
903
904 #define ide_devset_get_flag(name, flag) \
905 static int get_##name(ide_drive_t *drive) \
906 { \
907 return !!(drive->dev_flags & flag); \
908 }
909
910 #define ide_devset_set_flag(name, flag) \
911 static int set_##name(ide_drive_t *drive, int arg) \
912 { \
913 if (arg) \
914 drive->dev_flags |= flag; \
915 else \
916 drive->dev_flags &= ~flag; \
917 return 0; \
918 }
919
920 #define __IDE_DEVSET(_name, _flags, _get, _set) \
921 const struct ide_devset ide_devset_##_name = \
922 __DEVSET(_flags, _get, _set)
923
924 #define IDE_DEVSET(_name, _flags, _get, _set) \
925 static __IDE_DEVSET(_name, _flags, _get, _set)
926
927 #define ide_devset_rw(_name, _func) \
928 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
929
930 #define ide_devset_w(_name, _func) \
931 IDE_DEVSET(_name, 0, NULL, set_##_func)
932
933 #define ide_ext_devset_rw(_name, _func) \
934 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
935
936 #define ide_ext_devset_rw_sync(_name, _func) \
937 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
938
939 #define ide_decl_devset(_name) \
940 extern const struct ide_devset ide_devset_##_name
941
942 ide_decl_devset(io_32bit);
943 ide_decl_devset(keepsettings);
944 ide_decl_devset(pio_mode);
945 ide_decl_devset(unmaskirq);
946 ide_decl_devset(using_dma);
947
948 #ifdef CONFIG_IDE_PROC_FS
949 /*
950 * /proc/ide interface
951 */
952
953 #define ide_devset_rw_field(_name, _field) \
954 ide_devset_get(_name, _field); \
955 ide_devset_set(_name, _field); \
956 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
957
958 #define ide_devset_rw_flag(_name, _field) \
959 ide_devset_get_flag(_name, _field); \
960 ide_devset_set_flag(_name, _field); \
961 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
962
963 struct ide_proc_devset {
964 const char *name;
965 const struct ide_devset *setting;
966 int min, max;
967 int (*mulf)(ide_drive_t *);
968 int (*divf)(ide_drive_t *);
969 };
970
971 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
972 .name = __stringify(_name), \
973 .setting = &ide_devset_##_name, \
974 .min = _min, \
975 .max = _max, \
976 .mulf = _mulf, \
977 .divf = _divf, \
978 }
979
980 #define IDE_PROC_DEVSET(_name, _min, _max) \
981 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
982
983 typedef struct {
984 const char *name;
985 mode_t mode;
986 read_proc_t *read_proc;
987 write_proc_t *write_proc;
988 } ide_proc_entry_t;
989
990 void proc_ide_create(void);
991 void proc_ide_destroy(void);
992 void ide_proc_register_port(ide_hwif_t *);
993 void ide_proc_port_register_devices(ide_hwif_t *);
994 void ide_proc_unregister_device(ide_drive_t *);
995 void ide_proc_unregister_port(ide_hwif_t *);
996 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
997 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
998
999 read_proc_t proc_ide_read_capacity;
1000 read_proc_t proc_ide_read_geometry;
1001
1002 /*
1003 * Standard exit stuff:
1004 */
1005 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1006 { \
1007 len -= off; \
1008 if (len < count) { \
1009 *eof = 1; \
1010 if (len <= 0) \
1011 return 0; \
1012 } else \
1013 len = count; \
1014 *start = page + off; \
1015 return len; \
1016 }
1017 #else
1018 static inline void proc_ide_create(void) { ; }
1019 static inline void proc_ide_destroy(void) { ; }
1020 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1021 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1022 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1023 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1024 static inline void ide_proc_register_driver(ide_drive_t *drive,
1025 struct ide_driver *driver) { ; }
1026 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1027 struct ide_driver *driver) { ; }
1028 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1029 #endif
1030
1031 enum {
1032 /* enter/exit functions */
1033 IDE_DBG_FUNC = (1 << 0),
1034 /* sense key/asc handling */
1035 IDE_DBG_SENSE = (1 << 1),
1036 /* packet commands handling */
1037 IDE_DBG_PC = (1 << 2),
1038 /* request handling */
1039 IDE_DBG_RQ = (1 << 3),
1040 /* driver probing/setup */
1041 IDE_DBG_PROBE = (1 << 4),
1042 };
1043
1044 /* DRV_NAME has to be defined in the driver before using the macro below */
1045 #define __ide_debug_log(lvl, fmt, args...) \
1046 { \
1047 if (unlikely(drive->debug_mask & lvl)) \
1048 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1049 __func__, ## args); \
1050 }
1051
1052 /*
1053 * Power Management state machine (rq->pm->pm_step).
1054 *
1055 * For each step, the core calls ide_start_power_step() first.
1056 * This can return:
1057 * - ide_stopped : In this case, the core calls us back again unless
1058 * step have been set to ide_power_state_completed.
1059 * - ide_started : In this case, the channel is left busy until an
1060 * async event (interrupt) occurs.
1061 * Typically, ide_start_power_step() will issue a taskfile request with
1062 * do_rw_taskfile().
1063 *
1064 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1065 * with the error code if any. This routine should update the step value
1066 * and return. It should not start a new request. The core will call
1067 * ide_start_power_step() for the new step value, unless step have been
1068 * set to IDE_PM_COMPLETED.
1069 */
1070 enum {
1071 IDE_PM_START_SUSPEND,
1072 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1073 IDE_PM_STANDBY,
1074
1075 IDE_PM_START_RESUME,
1076 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1077 IDE_PM_IDLE,
1078 IDE_PM_RESTORE_DMA,
1079
1080 IDE_PM_COMPLETED,
1081 };
1082
1083 int generic_ide_suspend(struct device *, pm_message_t);
1084 int generic_ide_resume(struct device *);
1085
1086 void ide_complete_power_step(ide_drive_t *, struct request *);
1087 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1088 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1089 void ide_check_pm_state(ide_drive_t *, struct request *);
1090
1091 /*
1092 * Subdrivers support.
1093 *
1094 * The gendriver.owner field should be set to the module owner of this driver.
1095 * The gendriver.name field should be set to the name of this driver
1096 */
1097 struct ide_driver {
1098 const char *version;
1099 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1100 struct device_driver gen_driver;
1101 int (*probe)(ide_drive_t *);
1102 void (*remove)(ide_drive_t *);
1103 void (*resume)(ide_drive_t *);
1104 void (*shutdown)(ide_drive_t *);
1105 #ifdef CONFIG_IDE_PROC_FS
1106 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1107 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1108 #endif
1109 };
1110
1111 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1112
1113 int ide_device_get(ide_drive_t *);
1114 void ide_device_put(ide_drive_t *);
1115
1116 struct ide_ioctl_devset {
1117 unsigned int get_ioctl;
1118 unsigned int set_ioctl;
1119 const struct ide_devset *setting;
1120 };
1121
1122 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1123 unsigned long, const struct ide_ioctl_devset *);
1124
1125 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1126
1127 extern int ide_vlb_clk;
1128 extern int ide_pci_clk;
1129
1130 int ide_end_request(ide_drive_t *, int, int);
1131 int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
1132 void ide_kill_rq(ide_drive_t *, struct request *);
1133
1134 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1135 ide_expiry_t *);
1136 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1137 ide_expiry_t *);
1138
1139 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1140 ide_expiry_t *);
1141
1142 void ide_execute_pkt_cmd(ide_drive_t *);
1143
1144 void ide_pad_transfer(ide_drive_t *, int, int);
1145
1146 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1147
1148 void ide_fix_driveid(u16 *);
1149
1150 extern void ide_fixstring(u8 *, const int, const int);
1151
1152 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1153
1154 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1155
1156 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1157 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1158
1159 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1160
1161 extern int ide_devset_execute(ide_drive_t *drive,
1162 const struct ide_devset *setting, int arg);
1163
1164 void ide_complete_task(ide_drive_t *, ide_task_t *, u8, u8);
1165 void ide_complete_rq(ide_drive_t *, u8);
1166
1167 void ide_tf_dump(const char *, struct ide_taskfile *);
1168
1169 void ide_exec_command(ide_hwif_t *, u8);
1170 u8 ide_read_status(ide_hwif_t *);
1171 u8 ide_read_altstatus(ide_hwif_t *);
1172
1173 void ide_set_irq(ide_hwif_t *, int);
1174
1175 void ide_tf_load(ide_drive_t *, ide_task_t *);
1176 void ide_tf_read(ide_drive_t *, ide_task_t *);
1177
1178 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1179 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1180
1181 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1182
1183 extern void SELECT_DRIVE(ide_drive_t *);
1184 void SELECT_MASK(ide_drive_t *, int);
1185
1186 u8 ide_read_error(ide_drive_t *);
1187 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1188
1189 int ide_check_atapi_device(ide_drive_t *, const char *);
1190
1191 void ide_init_pc(struct ide_atapi_pc *);
1192
1193 /* Disk head parking */
1194 extern wait_queue_head_t ide_park_wq;
1195 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1196 char *buf);
1197 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1198 const char *buf, size_t len);
1199
1200 /*
1201 * Special requests for ide-tape block device strategy routine.
1202 *
1203 * In order to service a character device command, we add special requests to
1204 * the tail of our block device request queue and wait for their completion.
1205 */
1206 enum {
1207 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1208 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1209 REQ_IDETAPE_READ = (1 << 2),
1210 REQ_IDETAPE_WRITE = (1 << 3),
1211 };
1212
1213 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1214
1215 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1216 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1217 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1218 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1219 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1220
1221 int ide_cd_expiry(ide_drive_t *);
1222
1223 int ide_cd_get_xferlen(struct request *);
1224
1225 ide_startstop_t ide_issue_pc(ide_drive_t *);
1226
1227 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1228
1229 void task_end_request(ide_drive_t *, struct request *, u8);
1230
1231 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1232 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1233
1234 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1235
1236 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1237
1238 extern int ide_driveid_update(ide_drive_t *);
1239 extern int ide_config_drive_speed(ide_drive_t *, u8);
1240 extern u8 eighty_ninty_three (ide_drive_t *);
1241 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1242
1243 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1244
1245 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1246
1247 extern void ide_timer_expiry(unsigned long);
1248 extern irqreturn_t ide_intr(int irq, void *dev_id);
1249 extern void do_ide_request(struct request_queue *);
1250
1251 void ide_init_disk(struct gendisk *, ide_drive_t *);
1252
1253 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1254 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1255 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1256 #else
1257 #define ide_pci_register_driver(d) pci_register_driver(d)
1258 #endif
1259
1260 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1261 {
1262 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1263 return 1;
1264 return 0;
1265 }
1266
1267 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1268 hw_regs_t *, hw_regs_t **);
1269 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1270
1271 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1272 int ide_pci_set_master(struct pci_dev *, const char *);
1273 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1274 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1275 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1276 #else
1277 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1278 const struct ide_port_info *d)
1279 {
1280 return -EINVAL;
1281 }
1282 #endif
1283
1284 struct ide_pci_enablebit {
1285 u8 reg; /* byte pci reg holding the enable-bit */
1286 u8 mask; /* mask to isolate the enable-bit */
1287 u8 val; /* value of masked reg when "enabled" */
1288 };
1289
1290 enum {
1291 /* Uses ISA control ports not PCI ones. */
1292 IDE_HFLAG_ISA_PORTS = (1 << 0),
1293 /* single port device */
1294 IDE_HFLAG_SINGLE = (1 << 1),
1295 /* don't use legacy PIO blacklist */
1296 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1297 /* set for the second port of QD65xx */
1298 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1299 /* use PIO8/9 for prefetch off/on */
1300 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1301 /* use PIO6/7 for fast-devsel off/on */
1302 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1303 /* use 100-102 and 200-202 PIO values to set DMA modes */
1304 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1305 /*
1306 * keep DMA setting when programming PIO mode, may be used only
1307 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1308 */
1309 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1310 /* program host for the transfer mode after programming device */
1311 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1312 /* don't program host/device for the transfer mode ("smart" hosts) */
1313 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1314 /* trust BIOS for programming chipset/device for DMA */
1315 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1316 /* host is CS5510/CS5520 */
1317 IDE_HFLAG_CS5520 = (1 << 11),
1318 /* ATAPI DMA is unsupported */
1319 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1320 /* set if host is a "non-bootable" controller */
1321 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1322 /* host doesn't support DMA */
1323 IDE_HFLAG_NO_DMA = (1 << 14),
1324 /* check if host is PCI IDE device before allowing DMA */
1325 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1326 /* host uses MMIO */
1327 IDE_HFLAG_MMIO = (1 << 16),
1328 /* no LBA48 */
1329 IDE_HFLAG_NO_LBA48 = (1 << 17),
1330 /* no LBA48 DMA */
1331 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1332 /* data FIFO is cleared by an error */
1333 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1334 /* serialize ports */
1335 IDE_HFLAG_SERIALIZE = (1 << 20),
1336 /* host is DTC2278 */
1337 IDE_HFLAG_DTC2278 = (1 << 21),
1338 /* 4 devices on a single set of I/O ports */
1339 IDE_HFLAG_4DRIVES = (1 << 22),
1340 /* host is TRM290 */
1341 IDE_HFLAG_TRM290 = (1 << 23),
1342 /* use 32-bit I/O ops */
1343 IDE_HFLAG_IO_32BIT = (1 << 24),
1344 /* unmask IRQs */
1345 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1346 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1347 /* serialize ports if DMA is possible (for sl82c105) */
1348 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1349 /* force host out of "simplex" mode */
1350 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1351 /* DSC overlap is unsupported */
1352 IDE_HFLAG_NO_DSC = (1 << 29),
1353 /* never use 32-bit I/O ops */
1354 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1355 /* never unmask IRQs */
1356 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1357 };
1358
1359 #ifdef CONFIG_BLK_DEV_OFFBOARD
1360 # define IDE_HFLAG_OFF_BOARD 0
1361 #else
1362 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1363 #endif
1364
1365 struct ide_port_info {
1366 char *name;
1367
1368 int (*init_chipset)(struct pci_dev *);
1369
1370 void (*get_lock)(irq_handler_t, void *);
1371 void (*release_lock)(void);
1372
1373 void (*init_iops)(ide_hwif_t *);
1374 void (*init_hwif)(ide_hwif_t *);
1375 int (*init_dma)(ide_hwif_t *,
1376 const struct ide_port_info *);
1377
1378 const struct ide_tp_ops *tp_ops;
1379 const struct ide_port_ops *port_ops;
1380 const struct ide_dma_ops *dma_ops;
1381
1382 struct ide_pci_enablebit enablebits[2];
1383
1384 hwif_chipset_t chipset;
1385
1386 u16 max_sectors; /* if < than the default one */
1387
1388 u32 host_flags;
1389
1390 int irq_flags;
1391
1392 u8 pio_mask;
1393 u8 swdma_mask;
1394 u8 mwdma_mask;
1395 u8 udma_mask;
1396 };
1397
1398 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1399 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1400 const struct ide_port_info *, void *);
1401 void ide_pci_remove(struct pci_dev *);
1402
1403 #ifdef CONFIG_PM
1404 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1405 int ide_pci_resume(struct pci_dev *);
1406 #else
1407 #define ide_pci_suspend NULL
1408 #define ide_pci_resume NULL
1409 #endif
1410
1411 void ide_map_sg(ide_drive_t *, struct request *);
1412 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1413
1414 #define BAD_DMA_DRIVE 0
1415 #define GOOD_DMA_DRIVE 1
1416
1417 struct drive_list_entry {
1418 const char *id_model;
1419 const char *id_firmware;
1420 };
1421
1422 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1423
1424 #ifdef CONFIG_BLK_DEV_IDEDMA
1425 int ide_dma_good_drive(ide_drive_t *);
1426 int __ide_dma_bad_drive(ide_drive_t *);
1427 int ide_id_dma_bug(ide_drive_t *);
1428
1429 u8 ide_find_dma_mode(ide_drive_t *, u8);
1430
1431 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1432 {
1433 return ide_find_dma_mode(drive, XFER_UDMA_6);
1434 }
1435
1436 void ide_dma_off_quietly(ide_drive_t *);
1437 void ide_dma_off(ide_drive_t *);
1438 void ide_dma_on(ide_drive_t *);
1439 int ide_set_dma(ide_drive_t *);
1440 void ide_check_dma_crc(ide_drive_t *);
1441 ide_startstop_t ide_dma_intr(ide_drive_t *);
1442
1443 int ide_allocate_dma_engine(ide_hwif_t *);
1444 void ide_release_dma_engine(ide_hwif_t *);
1445
1446 int ide_build_sglist(ide_drive_t *, struct request *);
1447 void ide_destroy_dmatable(ide_drive_t *);
1448
1449 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1450 int config_drive_for_dma(ide_drive_t *);
1451 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1452 void ide_dma_host_set(ide_drive_t *, int);
1453 extern int ide_dma_setup(ide_drive_t *);
1454 void ide_dma_exec_cmd(ide_drive_t *, u8);
1455 extern void ide_dma_start(ide_drive_t *);
1456 int ide_dma_end(ide_drive_t *);
1457 int ide_dma_test_irq(ide_drive_t *);
1458 u8 ide_dma_sff_read_status(ide_hwif_t *);
1459 extern const struct ide_dma_ops sff_dma_ops;
1460 #else
1461 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1462 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1463
1464 void ide_dma_lost_irq(ide_drive_t *);
1465 void ide_dma_timeout(ide_drive_t *);
1466 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1467
1468 #else
1469 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1470 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1471 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1472 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1473 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1474 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1475 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1476 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1477 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1478 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1479 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1480 #endif /* CONFIG_BLK_DEV_IDEDMA */
1481
1482 #ifdef CONFIG_BLK_DEV_IDEACPI
1483 int ide_acpi_init(void);
1484 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1485 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1486 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1487 void ide_acpi_init_port(ide_hwif_t *);
1488 void ide_acpi_port_init_devices(ide_hwif_t *);
1489 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1490 #else
1491 static inline int ide_acpi_init(void) { return 0; }
1492 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1493 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1494 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1495 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1496 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1497 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1498 #endif
1499
1500 void ide_register_region(struct gendisk *);
1501 void ide_unregister_region(struct gendisk *);
1502
1503 void ide_undecoded_slave(ide_drive_t *);
1504
1505 void ide_port_apply_params(ide_hwif_t *);
1506 int ide_sysfs_register_port(ide_hwif_t *);
1507
1508 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1509 void ide_host_free(struct ide_host *);
1510 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1511 hw_regs_t **);
1512 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1513 struct ide_host **);
1514 void ide_host_remove(struct ide_host *);
1515 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1516 void ide_port_unregister_devices(ide_hwif_t *);
1517 void ide_port_scan(ide_hwif_t *);
1518
1519 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1520 {
1521 return hwif->hwif_data;
1522 }
1523
1524 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1525 {
1526 hwif->hwif_data = data;
1527 }
1528
1529 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1530
1531 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1532 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1533
1534 struct ide_timing {
1535 u8 mode;
1536 u8 setup; /* t1 */
1537 u16 act8b; /* t2 for 8-bit io */
1538 u16 rec8b; /* t2i for 8-bit io */
1539 u16 cyc8b; /* t0 for 8-bit io */
1540 u16 active; /* t2 or tD */
1541 u16 recover; /* t2i or tK */
1542 u16 cycle; /* t0 */
1543 u16 udma; /* t2CYCTYP/2 */
1544 };
1545
1546 enum {
1547 IDE_TIMING_SETUP = (1 << 0),
1548 IDE_TIMING_ACT8B = (1 << 1),
1549 IDE_TIMING_REC8B = (1 << 2),
1550 IDE_TIMING_CYC8B = (1 << 3),
1551 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1552 IDE_TIMING_CYC8B,
1553 IDE_TIMING_ACTIVE = (1 << 4),
1554 IDE_TIMING_RECOVER = (1 << 5),
1555 IDE_TIMING_CYCLE = (1 << 6),
1556 IDE_TIMING_UDMA = (1 << 7),
1557 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1558 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1559 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1560 };
1561
1562 struct ide_timing *ide_timing_find_mode(u8);
1563 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1564 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1565 struct ide_timing *, unsigned int);
1566 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1567
1568 #ifdef CONFIG_IDE_XFER_MODE
1569 int ide_scan_pio_blacklist(char *);
1570 const char *ide_xfer_verbose(u8);
1571 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1572 int ide_set_pio_mode(ide_drive_t *, u8);
1573 int ide_set_dma_mode(ide_drive_t *, u8);
1574 void ide_set_pio(ide_drive_t *, u8);
1575 int ide_set_xfer_rate(ide_drive_t *, u8);
1576 #else
1577 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1578 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1579 #endif
1580
1581 static inline void ide_set_max_pio(ide_drive_t *drive)
1582 {
1583 ide_set_pio(drive, 255);
1584 }
1585
1586 char *ide_media_string(ide_drive_t *);
1587
1588 extern struct device_attribute ide_dev_attrs[];
1589 extern struct bus_type ide_bus_type;
1590 extern struct class *ide_port_class;
1591
1592 static inline void ide_dump_identify(u8 *id)
1593 {
1594 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1595 }
1596
1597 static inline int hwif_to_node(ide_hwif_t *hwif)
1598 {
1599 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1600 }
1601
1602 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1603 {
1604 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1605
1606 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1607 }
1608
1609 #define ide_port_for_each_dev(i, dev, port) \
1610 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1611
1612 #define ide_port_for_each_present_dev(i, dev, port) \
1613 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1614 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1615
1616 #define ide_host_for_each_port(i, port, host) \
1617 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1618
1619 #endif /* _IDE_H */
Linux kernel - Deliverables
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