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ide: turn set_irq() method into write_devctl() 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 /* 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
314 u8 hob_feature; /* 1-5: additional data to support LBA48 */
315 u8 hob_nsect;
316 u8 hob_lbal;
317 u8 hob_lbam;
318 u8 hob_lbah;
319
320 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
321
322 union { /*  7: */
323 u8 error; /* read: error */
324 u8 feature; /* write: feature */
325 };
326
327 u8 nsect; /* 8: number of sectors */
328 u8 lbal; /* 9: LBA low */
329 u8 lbam; /* 10: LBA mid */
330 u8 lbah; /* 11: LBA high */
331
332 u8 device; /* 12: device select */
333
334 union { /* 13: */
335 u8 status; /*  read: status  */
336 u8 command; /* write: command */
337 };
338 };
339
340 struct ide_cmd {
341 union {
342 struct ide_taskfile tf;
343 u8 tf_array[14];
344 };
345 u8 ftf_flags; /* for TASKFILE ioctl */
346 u32 tf_flags;
347 int protocol;
348
349 int sg_nents; /* number of sg entries */
350 int orig_sg_nents;
351 int sg_dma_direction; /* DMA transfer direction */
352
353 unsigned int nbytes;
354 unsigned int nleft;
355 unsigned int last_xfer_len;
356
357 struct scatterlist *cursg;
358 unsigned int cursg_ofs;
359
360 struct request *rq; /* copy of request */
361 void *special; /* valid_t generally */
362 };
363
364 /* ATAPI packet command flags */
365 enum {
366 /* set when an error is considered normal - no retry (ide-tape) */
367 PC_FLAG_ABORT = (1 << 0),
368 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
369 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
370 PC_FLAG_DMA_OK = (1 << 3),
371 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
372 PC_FLAG_DMA_ERROR = (1 << 5),
373 PC_FLAG_WRITING = (1 << 6),
374 };
375
376 /*
377 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
378 * This is used for several packet commands (not for READ/WRITE commands).
379 */
380 #define IDE_PC_BUFFER_SIZE 64
381 #define ATAPI_WAIT_PC (60 * HZ)
382
383 struct ide_atapi_pc {
384 /* actual packet bytes */
385 u8 c[12];
386 /* incremented on each retry */
387 int retries;
388 int error;
389
390 /* bytes to transfer */
391 int req_xfer;
392 /* bytes actually transferred */
393 int xferred;
394
395 /* data buffer */
396 u8 *buf;
397 /* current buffer position */
398 u8 *cur_pos;
399 int buf_size;
400 /* missing/available data on the current buffer */
401 int b_count;
402
403 /* the corresponding request */
404 struct request *rq;
405
406 unsigned long flags;
407
408 /*
409 * those are more or less driver-specific and some of them are subject
410 * to change/removal later.
411 */
412 u8 pc_buf[IDE_PC_BUFFER_SIZE];
413
414 /* idetape only */
415 struct idetape_bh *bh;
416 char *b_data;
417
418 unsigned long timeout;
419 };
420
421 struct ide_devset;
422 struct ide_driver;
423
424 #ifdef CONFIG_BLK_DEV_IDEACPI
425 struct ide_acpi_drive_link;
426 struct ide_acpi_hwif_link;
427 #endif
428
429 struct ide_drive_s;
430
431 struct ide_disk_ops {
432 int (*check)(struct ide_drive_s *, const char *);
433 int (*get_capacity)(struct ide_drive_s *);
434 void (*setup)(struct ide_drive_s *);
435 void (*flush)(struct ide_drive_s *);
436 int (*init_media)(struct ide_drive_s *, struct gendisk *);
437 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
438 int);
439 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
440 sector_t);
441 int (*ioctl)(struct ide_drive_s *, struct block_device *,
442 fmode_t, unsigned int, unsigned long);
443 };
444
445 /* ATAPI device flags */
446 enum {
447 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
448
449 /* ide-cd */
450 /* Drive cannot eject the disc. */
451 IDE_AFLAG_NO_EJECT = (1 << 1),
452 /* Drive is a pre ATAPI 1.2 drive. */
453 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
454 /* TOC addresses are in BCD. */
455 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
456 /* TOC track numbers are in BCD. */
457 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
458 /* Saved TOC information is current. */
459 IDE_AFLAG_TOC_VALID = (1 << 6),
460 /* We think that the drive door is locked. */
461 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
462 /* SET_CD_SPEED command is unsupported. */
463 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
464 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
465 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
466 IDE_AFLAG_SANYO_3CD = (1 << 11),
467 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
468 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
469 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
470
471 /* ide-floppy */
472 /* Avoid commands not supported in Clik drive */
473 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
474 /* Requires BH algorithm for packets */
475 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
476 /* Supports format progress report */
477 IDE_AFLAG_SRFP = (1 << 17),
478
479 /* ide-tape */
480 IDE_AFLAG_IGNORE_DSC = (1 << 18),
481 /* 0 When the tape position is unknown */
482 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
483 /* Device already opened */
484 IDE_AFLAG_BUSY = (1 << 20),
485 /* Attempt to auto-detect the current user block size */
486 IDE_AFLAG_DETECT_BS = (1 << 21),
487 /* Currently on a filemark */
488 IDE_AFLAG_FILEMARK = (1 << 22),
489 /* 0 = no tape is loaded, so we don't rewind after ejecting */
490 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
491
492 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
493 };
494
495 /* device flags */
496 enum {
497 /* restore settings after device reset */
498 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
499 /* device is using DMA for read/write */
500 IDE_DFLAG_USING_DMA = (1 << 1),
501 /* okay to unmask other IRQs */
502 IDE_DFLAG_UNMASK = (1 << 2),
503 /* don't attempt flushes */
504 IDE_DFLAG_NOFLUSH = (1 << 3),
505 /* DSC overlap */
506 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
507 /* give potential excess bandwidth */
508 IDE_DFLAG_NICE1 = (1 << 5),
509 /* device is physically present */
510 IDE_DFLAG_PRESENT = (1 << 6),
511 /* id read from device (synthetic if not set) */
512 IDE_DFLAG_ID_READ = (1 << 8),
513 IDE_DFLAG_NOPROBE = (1 << 9),
514 /* need to do check_media_change() */
515 IDE_DFLAG_REMOVABLE = (1 << 10),
516 /* needed for removable devices */
517 IDE_DFLAG_ATTACH = (1 << 11),
518 IDE_DFLAG_FORCED_GEOM = (1 << 12),
519 /* disallow setting unmask bit */
520 IDE_DFLAG_NO_UNMASK = (1 << 13),
521 /* disallow enabling 32-bit I/O */
522 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
523 /* for removable only: door lock/unlock works */
524 IDE_DFLAG_DOORLOCKING = (1 << 15),
525 /* disallow DMA */
526 IDE_DFLAG_NODMA = (1 << 16),
527 /* powermanagment told us not to do anything, so sleep nicely */
528 IDE_DFLAG_BLOCKED = (1 << 17),
529 /* sleeping & sleep field valid */
530 IDE_DFLAG_SLEEPING = (1 << 18),
531 IDE_DFLAG_POST_RESET = (1 << 19),
532 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
533 IDE_DFLAG_LBA48 = (1 << 21),
534 /* status of write cache */
535 IDE_DFLAG_WCACHE = (1 << 22),
536 /* used for ignoring ATA_DF */
537 IDE_DFLAG_NOWERR = (1 << 23),
538 /* retrying in PIO */
539 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
540 IDE_DFLAG_LBA = (1 << 25),
541 /* don't unload heads */
542 IDE_DFLAG_NO_UNLOAD = (1 << 26),
543 /* heads unloaded, please don't reset port */
544 IDE_DFLAG_PARKED = (1 << 27),
545 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
546 /* write protect */
547 IDE_DFLAG_WP = (1 << 29),
548 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
549 };
550
551 struct ide_drive_s {
552 char name[4]; /* drive name, such as "hda" */
553 char driver_req[10]; /* requests specific driver */
554
555 struct request_queue *queue; /* request queue */
556
557 struct request *rq; /* current request */
558 void *driver_data; /* extra driver data */
559 u16 *id; /* identification info */
560 #ifdef CONFIG_IDE_PROC_FS
561 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
562 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
563 #endif
564 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
565
566 const struct ide_disk_ops *disk_ops;
567
568 unsigned long dev_flags;
569
570 unsigned long sleep; /* sleep until this time */
571 unsigned long timeout; /* max time to wait for irq */
572
573 special_t special; /* special action flags */
574
575 u8 select; /* basic drive/head select reg value */
576 u8 retry_pio; /* retrying dma capable host in pio */
577 u8 waiting_for_dma; /* dma currently in progress */
578 u8 dma; /* atapi dma flag */
579
580 u8 quirk_list; /* considered quirky, set for a specific host */
581 u8 init_speed; /* transfer rate set at boot */
582 u8 current_speed; /* current transfer rate set */
583 u8 desired_speed; /* desired transfer rate set */
584 u8 dn; /* now wide spread use */
585 u8 acoustic; /* acoustic management */
586 u8 media; /* disk, cdrom, tape, floppy, ... */
587 u8 ready_stat; /* min status value for drive ready */
588 u8 mult_count; /* current multiple sector setting */
589 u8 mult_req; /* requested multiple sector setting */
590 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
591 u8 bad_wstat; /* used for ignoring ATA_DF */
592 u8 head; /* "real" number of heads */
593 u8 sect; /* "real" sectors per track */
594 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
595 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
596
597 /* delay this long before sending packet command */
598 u8 pc_delay;
599
600 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
601 unsigned int cyl; /* "real" number of cyls */
602 unsigned int drive_data; /* used by set_pio_mode/selectproc */
603 unsigned int failures; /* current failure count */
604 unsigned int max_failures; /* maximum allowed failure count */
605 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
606
607 u64 capacity64; /* total number of sectors */
608
609 int lun; /* logical unit */
610 int crc_count; /* crc counter to reduce drive speed */
611
612 unsigned long debug_mask; /* debugging levels switch */
613
614 #ifdef CONFIG_BLK_DEV_IDEACPI
615 struct ide_acpi_drive_link *acpidata;
616 #endif
617 struct list_head list;
618 struct device gendev;
619 struct completion gendev_rel_comp; /* to deal with device release() */
620
621 /* current packet command */
622 struct ide_atapi_pc *pc;
623
624 /* last failed packet command */
625 struct ide_atapi_pc *failed_pc;
626
627 /* callback for packet commands */
628 int (*pc_callback)(struct ide_drive_s *, int);
629
630 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
631 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
632 unsigned int, int);
633
634 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
635
636 unsigned long atapi_flags;
637
638 struct ide_atapi_pc request_sense_pc;
639 struct request request_sense_rq;
640 };
641
642 typedef struct ide_drive_s ide_drive_t;
643
644 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
645
646 #define to_ide_drv(obj, cont_type) \
647 container_of(obj, struct cont_type, dev)
648
649 #define ide_drv_g(disk, cont_type) \
650 container_of((disk)->private_data, struct cont_type, driver)
651
652 struct ide_port_info;
653
654 struct ide_tp_ops {
655 void (*exec_command)(struct hwif_s *, u8);
656 u8 (*read_status)(struct hwif_s *);
657 u8 (*read_altstatus)(struct hwif_s *);
658 void (*write_devctl)(struct hwif_s *, u8);
659
660 void (*tf_load)(ide_drive_t *, struct ide_cmd *);
661 void (*tf_read)(ide_drive_t *, struct ide_cmd *);
662
663 void (*input_data)(ide_drive_t *, struct ide_cmd *,
664 void *, unsigned int);
665 void (*output_data)(ide_drive_t *, struct ide_cmd *,
666 void *, unsigned int);
667 };
668
669 extern const struct ide_tp_ops default_tp_ops;
670
671 /**
672 * struct ide_port_ops - IDE port operations
673 *
674 * @init_dev: host specific initialization of a device
675 * @set_pio_mode: routine to program host for PIO mode
676 * @set_dma_mode: routine to program host for DMA mode
677 * @selectproc: tweaks hardware to select drive
678 * @reset_poll: chipset polling based on hba specifics
679 * @pre_reset: chipset specific changes to default for device-hba resets
680 * @resetproc: routine to reset controller after a disk reset
681 * @maskproc: special host masking for drive selection
682 * @quirkproc: check host's drive quirk list
683 * @clear_irq: clear IRQ
684 *
685 * @mdma_filter: filter MDMA modes
686 * @udma_filter: filter UDMA modes
687 *
688 * @cable_detect: detect cable type
689 */
690 struct ide_port_ops {
691 void (*init_dev)(ide_drive_t *);
692 void (*set_pio_mode)(ide_drive_t *, const u8);
693 void (*set_dma_mode)(ide_drive_t *, const u8);
694 void (*selectproc)(ide_drive_t *);
695 int (*reset_poll)(ide_drive_t *);
696 void (*pre_reset)(ide_drive_t *);
697 void (*resetproc)(ide_drive_t *);
698 void (*maskproc)(ide_drive_t *, int);
699 void (*quirkproc)(ide_drive_t *);
700 void (*clear_irq)(ide_drive_t *);
701
702 u8 (*mdma_filter)(ide_drive_t *);
703 u8 (*udma_filter)(ide_drive_t *);
704
705 u8 (*cable_detect)(struct hwif_s *);
706 };
707
708 struct ide_dma_ops {
709 void (*dma_host_set)(struct ide_drive_s *, int);
710 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
711 void (*dma_start)(struct ide_drive_s *);
712 int (*dma_end)(struct ide_drive_s *);
713 int (*dma_test_irq)(struct ide_drive_s *);
714 void (*dma_lost_irq)(struct ide_drive_s *);
715 /* below ones are optional */
716 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
717 int (*dma_timer_expiry)(struct ide_drive_s *);
718 void (*dma_clear)(struct ide_drive_s *);
719 /*
720 * The following method is optional and only required to be
721 * implemented for the SFF-8038i compatible controllers.
722 */
723 u8 (*dma_sff_read_status)(struct hwif_s *);
724 };
725
726 struct ide_host;
727
728 typedef struct hwif_s {
729 struct hwif_s *mate; /* other hwif from same PCI chip */
730 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
731
732 struct ide_host *host;
733
734 char name[6]; /* name of interface, eg. "ide0" */
735
736 struct ide_io_ports io_ports;
737
738 unsigned long sata_scr[SATA_NR_PORTS];
739
740 ide_drive_t *devices[MAX_DRIVES + 1];
741
742 u8 major; /* our major number */
743 u8 index; /* 0 for ide0; 1 for ide1; ... */
744 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
745
746 u32 host_flags;
747
748 u8 pio_mask;
749
750 u8 ultra_mask;
751 u8 mwdma_mask;
752 u8 swdma_mask;
753
754 u8 cbl; /* cable type */
755
756 hwif_chipset_t chipset; /* sub-module for tuning.. */
757
758 struct device *dev;
759
760 ide_ack_intr_t *ack_intr;
761
762 void (*rw_disk)(ide_drive_t *, struct request *);
763
764 const struct ide_tp_ops *tp_ops;
765 const struct ide_port_ops *port_ops;
766 const struct ide_dma_ops *dma_ops;
767
768 /* dma physical region descriptor table (cpu view) */
769 unsigned int *dmatable_cpu;
770 /* dma physical region descriptor table (dma view) */
771 dma_addr_t dmatable_dma;
772
773 /* maximum number of PRD table entries */
774 int prd_max_nents;
775 /* PRD entry size in bytes */
776 int prd_ent_size;
777
778 /* Scatter-gather list used to build the above */
779 struct scatterlist *sg_table;
780 int sg_max_nents; /* Maximum number of entries in it */
781
782 struct ide_cmd cmd; /* current command */
783
784 int rqsize; /* max sectors per request */
785 int irq; /* our irq number */
786
787 unsigned long dma_base; /* base addr for dma ports */
788
789 unsigned long config_data; /* for use by chipset-specific code */
790 unsigned long select_data; /* for use by chipset-specific code */
791
792 unsigned long extra_base; /* extra addr for dma ports */
793 unsigned extra_ports; /* number of extra dma ports */
794
795 unsigned present : 1; /* this interface exists */
796 unsigned busy : 1; /* serializes devices on a port */
797
798 struct device gendev;
799 struct device *portdev;
800
801 struct completion gendev_rel_comp; /* To deal with device release() */
802
803 void *hwif_data; /* extra hwif data */
804
805 #ifdef CONFIG_BLK_DEV_IDEACPI
806 struct ide_acpi_hwif_link *acpidata;
807 #endif
808
809 /* IRQ handler, if active */
810 ide_startstop_t (*handler)(ide_drive_t *);
811
812 /* BOOL: polling active & poll_timeout field valid */
813 unsigned int polling : 1;
814
815 /* current drive */
816 ide_drive_t *cur_dev;
817
818 /* current request */
819 struct request *rq;
820
821 /* failsafe timer */
822 struct timer_list timer;
823 /* timeout value during long polls */
824 unsigned long poll_timeout;
825 /* queried upon timeouts */
826 int (*expiry)(ide_drive_t *);
827
828 int req_gen;
829 int req_gen_timer;
830
831 spinlock_t lock;
832 } ____cacheline_internodealigned_in_smp ide_hwif_t;
833
834 #define MAX_HOST_PORTS 4
835
836 struct ide_host {
837 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
838 unsigned int n_ports;
839 struct device *dev[2];
840
841 int (*init_chipset)(struct pci_dev *);
842
843 void (*get_lock)(irq_handler_t, void *);
844 void (*release_lock)(void);
845
846 irq_handler_t irq_handler;
847
848 unsigned long host_flags;
849
850 int irq_flags;
851
852 void *host_priv;
853 ide_hwif_t *cur_port; /* for hosts requiring serialization */
854
855 /* used for hosts requiring serialization */
856 volatile unsigned long host_busy;
857 };
858
859 #define IDE_HOST_BUSY 0
860
861 /*
862 * internal ide interrupt handler type
863 */
864 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
865 typedef int (ide_expiry_t)(ide_drive_t *);
866
867 /* used by ide-cd, ide-floppy, etc. */
868 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
869
870 extern struct mutex ide_setting_mtx;
871
872 /*
873 * configurable drive settings
874 */
875
876 #define DS_SYNC (1 << 0)
877
878 struct ide_devset {
879 int (*get)(ide_drive_t *);
880 int (*set)(ide_drive_t *, int);
881 unsigned int flags;
882 };
883
884 #define __DEVSET(_flags, _get, _set) { \
885 .flags = _flags, \
886 .get = _get, \
887 .set = _set, \
888 }
889
890 #define ide_devset_get(name, field) \
891 static int get_##name(ide_drive_t *drive) \
892 { \
893 return drive->field; \
894 }
895
896 #define ide_devset_set(name, field) \
897 static int set_##name(ide_drive_t *drive, int arg) \
898 { \
899 drive->field = arg; \
900 return 0; \
901 }
902
903 #define ide_devset_get_flag(name, flag) \
904 static int get_##name(ide_drive_t *drive) \
905 { \
906 return !!(drive->dev_flags & flag); \
907 }
908
909 #define ide_devset_set_flag(name, flag) \
910 static int set_##name(ide_drive_t *drive, int arg) \
911 { \
912 if (arg) \
913 drive->dev_flags |= flag; \
914 else \
915 drive->dev_flags &= ~flag; \
916 return 0; \
917 }
918
919 #define __IDE_DEVSET(_name, _flags, _get, _set) \
920 const struct ide_devset ide_devset_##_name = \
921 __DEVSET(_flags, _get, _set)
922
923 #define IDE_DEVSET(_name, _flags, _get, _set) \
924 static __IDE_DEVSET(_name, _flags, _get, _set)
925
926 #define ide_devset_rw(_name, _func) \
927 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
928
929 #define ide_devset_w(_name, _func) \
930 IDE_DEVSET(_name, 0, NULL, set_##_func)
931
932 #define ide_ext_devset_rw(_name, _func) \
933 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
934
935 #define ide_ext_devset_rw_sync(_name, _func) \
936 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
937
938 #define ide_decl_devset(_name) \
939 extern const struct ide_devset ide_devset_##_name
940
941 ide_decl_devset(io_32bit);
942 ide_decl_devset(keepsettings);
943 ide_decl_devset(pio_mode);
944 ide_decl_devset(unmaskirq);
945 ide_decl_devset(using_dma);
946
947 #ifdef CONFIG_IDE_PROC_FS
948 /*
949 * /proc/ide interface
950 */
951
952 #define ide_devset_rw_field(_name, _field) \
953 ide_devset_get(_name, _field); \
954 ide_devset_set(_name, _field); \
955 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
956
957 #define ide_devset_rw_flag(_name, _field) \
958 ide_devset_get_flag(_name, _field); \
959 ide_devset_set_flag(_name, _field); \
960 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
961
962 struct ide_proc_devset {
963 const char *name;
964 const struct ide_devset *setting;
965 int min, max;
966 int (*mulf)(ide_drive_t *);
967 int (*divf)(ide_drive_t *);
968 };
969
970 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
971 .name = __stringify(_name), \
972 .setting = &ide_devset_##_name, \
973 .min = _min, \
974 .max = _max, \
975 .mulf = _mulf, \
976 .divf = _divf, \
977 }
978
979 #define IDE_PROC_DEVSET(_name, _min, _max) \
980 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
981
982 typedef struct {
983 const char *name;
984 mode_t mode;
985 read_proc_t *read_proc;
986 write_proc_t *write_proc;
987 } ide_proc_entry_t;
988
989 void proc_ide_create(void);
990 void proc_ide_destroy(void);
991 void ide_proc_register_port(ide_hwif_t *);
992 void ide_proc_port_register_devices(ide_hwif_t *);
993 void ide_proc_unregister_device(ide_drive_t *);
994 void ide_proc_unregister_port(ide_hwif_t *);
995 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
996 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
997
998 read_proc_t proc_ide_read_capacity;
999 read_proc_t proc_ide_read_geometry;
1000
1001 /*
1002 * Standard exit stuff:
1003 */
1004 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1005 { \
1006 len -= off; \
1007 if (len < count) { \
1008 *eof = 1; \
1009 if (len <= 0) \
1010 return 0; \
1011 } else \
1012 len = count; \
1013 *start = page + off; \
1014 return len; \
1015 }
1016 #else
1017 static inline void proc_ide_create(void) { ; }
1018 static inline void proc_ide_destroy(void) { ; }
1019 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1020 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1021 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1022 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1023 static inline void ide_proc_register_driver(ide_drive_t *drive,
1024 struct ide_driver *driver) { ; }
1025 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1026 struct ide_driver *driver) { ; }
1027 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1028 #endif
1029
1030 enum {
1031 /* enter/exit functions */
1032 IDE_DBG_FUNC = (1 << 0),
1033 /* sense key/asc handling */
1034 IDE_DBG_SENSE = (1 << 1),
1035 /* packet commands handling */
1036 IDE_DBG_PC = (1 << 2),
1037 /* request handling */
1038 IDE_DBG_RQ = (1 << 3),
1039 /* driver probing/setup */
1040 IDE_DBG_PROBE = (1 << 4),
1041 };
1042
1043 /* DRV_NAME has to be defined in the driver before using the macro below */
1044 #define __ide_debug_log(lvl, fmt, args...) \
1045 { \
1046 if (unlikely(drive->debug_mask & lvl)) \
1047 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1048 __func__, ## args); \
1049 }
1050
1051 /*
1052 * Power Management state machine (rq->pm->pm_step).
1053 *
1054 * For each step, the core calls ide_start_power_step() first.
1055 * This can return:
1056 * - ide_stopped : In this case, the core calls us back again unless
1057 * step have been set to ide_power_state_completed.
1058 * - ide_started : In this case, the channel is left busy until an
1059 * async event (interrupt) occurs.
1060 * Typically, ide_start_power_step() will issue a taskfile request with
1061 * do_rw_taskfile().
1062 *
1063 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1064 * with the error code if any. This routine should update the step value
1065 * and return. It should not start a new request. The core will call
1066 * ide_start_power_step() for the new step value, unless step have been
1067 * set to IDE_PM_COMPLETED.
1068 */
1069 enum {
1070 IDE_PM_START_SUSPEND,
1071 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1072 IDE_PM_STANDBY,
1073
1074 IDE_PM_START_RESUME,
1075 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1076 IDE_PM_IDLE,
1077 IDE_PM_RESTORE_DMA,
1078
1079 IDE_PM_COMPLETED,
1080 };
1081
1082 int generic_ide_suspend(struct device *, pm_message_t);
1083 int generic_ide_resume(struct device *);
1084
1085 void ide_complete_power_step(ide_drive_t *, struct request *);
1086 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1087 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1088 void ide_check_pm_state(ide_drive_t *, struct request *);
1089
1090 /*
1091 * Subdrivers support.
1092 *
1093 * The gendriver.owner field should be set to the module owner of this driver.
1094 * The gendriver.name field should be set to the name of this driver
1095 */
1096 struct ide_driver {
1097 const char *version;
1098 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1099 struct device_driver gen_driver;
1100 int (*probe)(ide_drive_t *);
1101 void (*remove)(ide_drive_t *);
1102 void (*resume)(ide_drive_t *);
1103 void (*shutdown)(ide_drive_t *);
1104 #ifdef CONFIG_IDE_PROC_FS
1105 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1106 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1107 #endif
1108 };
1109
1110 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1111
1112 int ide_device_get(ide_drive_t *);
1113 void ide_device_put(ide_drive_t *);
1114
1115 struct ide_ioctl_devset {
1116 unsigned int get_ioctl;
1117 unsigned int set_ioctl;
1118 const struct ide_devset *setting;
1119 };
1120
1121 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1122 unsigned long, const struct ide_ioctl_devset *);
1123
1124 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1125
1126 extern int ide_vlb_clk;
1127 extern int ide_pci_clk;
1128
1129 unsigned int ide_rq_bytes(struct request *);
1130 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1131 void ide_kill_rq(ide_drive_t *, struct request *);
1132
1133 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1134 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1135
1136 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1137 unsigned int);
1138
1139 void ide_pad_transfer(ide_drive_t *, int, int);
1140
1141 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1142
1143 void ide_fix_driveid(u16 *);
1144
1145 extern void ide_fixstring(u8 *, const int, const int);
1146
1147 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1148
1149 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1150
1151 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1152 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1153
1154 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1155
1156 extern int ide_devset_execute(ide_drive_t *drive,
1157 const struct ide_devset *setting, int arg);
1158
1159 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1160 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1161
1162 void ide_tf_dump(const char *, struct ide_taskfile *);
1163
1164 void ide_exec_command(ide_hwif_t *, u8);
1165 u8 ide_read_status(ide_hwif_t *);
1166 u8 ide_read_altstatus(ide_hwif_t *);
1167 void ide_write_devctl(ide_hwif_t *, u8);
1168
1169 void ide_tf_load(ide_drive_t *, struct ide_cmd *);
1170 void ide_tf_read(ide_drive_t *, struct ide_cmd *);
1171
1172 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1173 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1174
1175 extern void SELECT_DRIVE(ide_drive_t *);
1176 void SELECT_MASK(ide_drive_t *, int);
1177
1178 u8 ide_read_error(ide_drive_t *);
1179 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1180
1181 int ide_check_atapi_device(ide_drive_t *, const char *);
1182
1183 void ide_init_pc(struct ide_atapi_pc *);
1184
1185 /* Disk head parking */
1186 extern wait_queue_head_t ide_park_wq;
1187 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1188 char *buf);
1189 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1190 const char *buf, size_t len);
1191
1192 /*
1193 * Special requests for ide-tape block device strategy routine.
1194 *
1195 * In order to service a character device command, we add special requests to
1196 * the tail of our block device request queue and wait for their completion.
1197 */
1198 enum {
1199 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1200 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1201 REQ_IDETAPE_READ = (1 << 2),
1202 REQ_IDETAPE_WRITE = (1 << 3),
1203 };
1204
1205 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1206
1207 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1208 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1209 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1210 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1211 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1212
1213 int ide_cd_expiry(ide_drive_t *);
1214
1215 int ide_cd_get_xferlen(struct request *);
1216
1217 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1218
1219 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1220
1221 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1222
1223 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1224
1225 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1226 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1227
1228 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1229
1230 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1231
1232 extern int ide_driveid_update(ide_drive_t *);
1233 extern int ide_config_drive_speed(ide_drive_t *, u8);
1234 extern u8 eighty_ninty_three (ide_drive_t *);
1235 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1236
1237 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1238
1239 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1240
1241 extern void ide_timer_expiry(unsigned long);
1242 extern irqreturn_t ide_intr(int irq, void *dev_id);
1243 extern void do_ide_request(struct request_queue *);
1244
1245 void ide_init_disk(struct gendisk *, ide_drive_t *);
1246
1247 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1248 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1249 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1250 #else
1251 #define ide_pci_register_driver(d) pci_register_driver(d)
1252 #endif
1253
1254 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1255 {
1256 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1257 return 1;
1258 return 0;
1259 }
1260
1261 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1262 hw_regs_t *, hw_regs_t **);
1263 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1264
1265 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1266 int ide_pci_set_master(struct pci_dev *, const char *);
1267 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1268 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1269 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1270 #else
1271 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1272 const struct ide_port_info *d)
1273 {
1274 return -EINVAL;
1275 }
1276 #endif
1277
1278 struct ide_pci_enablebit {
1279 u8 reg; /* byte pci reg holding the enable-bit */
1280 u8 mask; /* mask to isolate the enable-bit */
1281 u8 val; /* value of masked reg when "enabled" */
1282 };
1283
1284 enum {
1285 /* Uses ISA control ports not PCI ones. */
1286 IDE_HFLAG_ISA_PORTS = (1 << 0),
1287 /* single port device */
1288 IDE_HFLAG_SINGLE = (1 << 1),
1289 /* don't use legacy PIO blacklist */
1290 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1291 /* set for the second port of QD65xx */
1292 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1293 /* use PIO8/9 for prefetch off/on */
1294 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1295 /* use PIO6/7 for fast-devsel off/on */
1296 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1297 /* use 100-102 and 200-202 PIO values to set DMA modes */
1298 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1299 /*
1300 * keep DMA setting when programming PIO mode, may be used only
1301 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1302 */
1303 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1304 /* program host for the transfer mode after programming device */
1305 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1306 /* don't program host/device for the transfer mode ("smart" hosts) */
1307 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1308 /* trust BIOS for programming chipset/device for DMA */
1309 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1310 /* host is CS5510/CS5520 */
1311 IDE_HFLAG_CS5520 = (1 << 11),
1312 /* ATAPI DMA is unsupported */
1313 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1314 /* set if host is a "non-bootable" controller */
1315 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1316 /* host doesn't support DMA */
1317 IDE_HFLAG_NO_DMA = (1 << 14),
1318 /* check if host is PCI IDE device before allowing DMA */
1319 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1320 /* host uses MMIO */
1321 IDE_HFLAG_MMIO = (1 << 16),
1322 /* no LBA48 */
1323 IDE_HFLAG_NO_LBA48 = (1 << 17),
1324 /* no LBA48 DMA */
1325 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1326 /* data FIFO is cleared by an error */
1327 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1328 /* serialize ports */
1329 IDE_HFLAG_SERIALIZE = (1 << 20),
1330 /* host is DTC2278 */
1331 IDE_HFLAG_DTC2278 = (1 << 21),
1332 /* 4 devices on a single set of I/O ports */
1333 IDE_HFLAG_4DRIVES = (1 << 22),
1334 /* host is TRM290 */
1335 IDE_HFLAG_TRM290 = (1 << 23),
1336 /* use 32-bit I/O ops */
1337 IDE_HFLAG_IO_32BIT = (1 << 24),
1338 /* unmask IRQs */
1339 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1340 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1341 /* serialize ports if DMA is possible (for sl82c105) */
1342 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1343 /* force host out of "simplex" mode */
1344 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1345 /* DSC overlap is unsupported */
1346 IDE_HFLAG_NO_DSC = (1 << 29),
1347 /* never use 32-bit I/O ops */
1348 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1349 /* never unmask IRQs */
1350 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1351 };
1352
1353 #ifdef CONFIG_BLK_DEV_OFFBOARD
1354 # define IDE_HFLAG_OFF_BOARD 0
1355 #else
1356 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1357 #endif
1358
1359 struct ide_port_info {
1360 char *name;
1361
1362 int (*init_chipset)(struct pci_dev *);
1363
1364 void (*get_lock)(irq_handler_t, void *);
1365 void (*release_lock)(void);
1366
1367 void (*init_iops)(ide_hwif_t *);
1368 void (*init_hwif)(ide_hwif_t *);
1369 int (*init_dma)(ide_hwif_t *,
1370 const struct ide_port_info *);
1371
1372 const struct ide_tp_ops *tp_ops;
1373 const struct ide_port_ops *port_ops;
1374 const struct ide_dma_ops *dma_ops;
1375
1376 struct ide_pci_enablebit enablebits[2];
1377
1378 hwif_chipset_t chipset;
1379
1380 u16 max_sectors; /* if < than the default one */
1381
1382 u32 host_flags;
1383
1384 int irq_flags;
1385
1386 u8 pio_mask;
1387 u8 swdma_mask;
1388 u8 mwdma_mask;
1389 u8 udma_mask;
1390 };
1391
1392 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1393 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1394 const struct ide_port_info *, void *);
1395 void ide_pci_remove(struct pci_dev *);
1396
1397 #ifdef CONFIG_PM
1398 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1399 int ide_pci_resume(struct pci_dev *);
1400 #else
1401 #define ide_pci_suspend NULL
1402 #define ide_pci_resume NULL
1403 #endif
1404
1405 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1406 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1407
1408 #define BAD_DMA_DRIVE 0
1409 #define GOOD_DMA_DRIVE 1
1410
1411 struct drive_list_entry {
1412 const char *id_model;
1413 const char *id_firmware;
1414 };
1415
1416 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1417
1418 #ifdef CONFIG_BLK_DEV_IDEDMA
1419 int ide_dma_good_drive(ide_drive_t *);
1420 int __ide_dma_bad_drive(ide_drive_t *);
1421 int ide_id_dma_bug(ide_drive_t *);
1422
1423 u8 ide_find_dma_mode(ide_drive_t *, u8);
1424
1425 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1426 {
1427 return ide_find_dma_mode(drive, XFER_UDMA_6);
1428 }
1429
1430 void ide_dma_off_quietly(ide_drive_t *);
1431 void ide_dma_off(ide_drive_t *);
1432 void ide_dma_on(ide_drive_t *);
1433 int ide_set_dma(ide_drive_t *);
1434 void ide_check_dma_crc(ide_drive_t *);
1435 ide_startstop_t ide_dma_intr(ide_drive_t *);
1436
1437 int ide_allocate_dma_engine(ide_hwif_t *);
1438 void ide_release_dma_engine(ide_hwif_t *);
1439
1440 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1441 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1442
1443 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1444 int config_drive_for_dma(ide_drive_t *);
1445 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1446 void ide_dma_host_set(ide_drive_t *, int);
1447 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1448 extern void ide_dma_start(ide_drive_t *);
1449 int ide_dma_end(ide_drive_t *);
1450 int ide_dma_test_irq(ide_drive_t *);
1451 int ide_dma_sff_timer_expiry(ide_drive_t *);
1452 u8 ide_dma_sff_read_status(ide_hwif_t *);
1453 extern const struct ide_dma_ops sff_dma_ops;
1454 #else
1455 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1456 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1457
1458 void ide_dma_lost_irq(ide_drive_t *);
1459 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1460
1461 #else
1462 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1463 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1464 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1465 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1466 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1467 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1468 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1469 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1470 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1471 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1472 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1473 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1474 static inline int ide_dma_prepare(ide_drive_t *drive,
1475 struct ide_cmd *cmd) { return 1; }
1476 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1477 struct ide_cmd *cmd) { ; }
1478 #endif /* CONFIG_BLK_DEV_IDEDMA */
1479
1480 #ifdef CONFIG_BLK_DEV_IDEACPI
1481 int ide_acpi_init(void);
1482 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1483 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1484 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1485 void ide_acpi_init_port(ide_hwif_t *);
1486 void ide_acpi_port_init_devices(ide_hwif_t *);
1487 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1488 #else
1489 static inline int ide_acpi_init(void) { return 0; }
1490 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1491 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1492 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1493 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1494 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1495 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1496 #endif
1497
1498 void ide_register_region(struct gendisk *);
1499 void ide_unregister_region(struct gendisk *);
1500
1501 void ide_undecoded_slave(ide_drive_t *);
1502
1503 void ide_port_apply_params(ide_hwif_t *);
1504 int ide_sysfs_register_port(ide_hwif_t *);
1505
1506 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1507 void ide_host_free(struct ide_host *);
1508 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1509 hw_regs_t **);
1510 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1511 struct ide_host **);
1512 void ide_host_remove(struct ide_host *);
1513 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1514 void ide_port_unregister_devices(ide_hwif_t *);
1515 void ide_port_scan(ide_hwif_t *);
1516
1517 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1518 {
1519 return hwif->hwif_data;
1520 }
1521
1522 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1523 {
1524 hwif->hwif_data = data;
1525 }
1526
1527 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1528
1529 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1530 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1531
1532 struct ide_timing {
1533 u8 mode;
1534 u8 setup; /* t1 */
1535 u16 act8b; /* t2 for 8-bit io */
1536 u16 rec8b; /* t2i for 8-bit io */
1537 u16 cyc8b; /* t0 for 8-bit io */
1538 u16 active; /* t2 or tD */
1539 u16 recover; /* t2i or tK */
1540 u16 cycle; /* t0 */
1541 u16 udma; /* t2CYCTYP/2 */
1542 };
1543
1544 enum {
1545 IDE_TIMING_SETUP = (1 << 0),
1546 IDE_TIMING_ACT8B = (1 << 1),
1547 IDE_TIMING_REC8B = (1 << 2),
1548 IDE_TIMING_CYC8B = (1 << 3),
1549 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1550 IDE_TIMING_CYC8B,
1551 IDE_TIMING_ACTIVE = (1 << 4),
1552 IDE_TIMING_RECOVER = (1 << 5),
1553 IDE_TIMING_CYCLE = (1 << 6),
1554 IDE_TIMING_UDMA = (1 << 7),
1555 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1556 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1557 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1558 };
1559
1560 struct ide_timing *ide_timing_find_mode(u8);
1561 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1562 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1563 struct ide_timing *, unsigned int);
1564 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1565
1566 #ifdef CONFIG_IDE_XFER_MODE
1567 int ide_scan_pio_blacklist(char *);
1568 const char *ide_xfer_verbose(u8);
1569 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1570 int ide_set_pio_mode(ide_drive_t *, u8);
1571 int ide_set_dma_mode(ide_drive_t *, u8);
1572 void ide_set_pio(ide_drive_t *, u8);
1573 int ide_set_xfer_rate(ide_drive_t *, u8);
1574 #else
1575 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1576 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1577 #endif
1578
1579 static inline void ide_set_max_pio(ide_drive_t *drive)
1580 {
1581 ide_set_pio(drive, 255);
1582 }
1583
1584 char *ide_media_string(ide_drive_t *);
1585
1586 extern struct device_attribute ide_dev_attrs[];
1587 extern struct bus_type ide_bus_type;
1588 extern struct class *ide_port_class;
1589
1590 static inline void ide_dump_identify(u8 *id)
1591 {
1592 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1593 }
1594
1595 static inline int hwif_to_node(ide_hwif_t *hwif)
1596 {
1597 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1598 }
1599
1600 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1601 {
1602 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1603
1604 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1605 }
1606
1607 #define ide_port_for_each_dev(i, dev, port) \
1608 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1609
1610 #define ide_port_for_each_present_dev(i, dev, port) \
1611 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1612 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1613
1614 #define ide_host_for_each_port(i, port, host) \
1615 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1616
1617 #endif /* _IDE_H */
Linux kernel - Deliverables
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