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ide: add IDE_HFLAG_DTC2278 host flag
[linux-2.6/mini2440.git] / include / linux / ide.h
blob732a05f3de089d59aab5aa0039d61e75a720c86f
1 #ifndef _IDE_H
2 #define _IDE_H
3 /*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
20 #include <linux/pm.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
23 #endif
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
26 #include <asm/io.h>
27 #include <asm/mutex.h>
28
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
31 #else
32 # define SUPPORT_VLB_SYNC 1
33 #endif
34
35 /*
36 * Probably not wise to fiddle with these
37 */
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42
43 /*
44 * Definitions for accessing IDE controller registers
45 */
46 #define IDE_NR_PORTS (10)
47
48 struct ide_io_ports {
49 unsigned long data_addr;
50
51 union {
52 unsigned long error_addr; /* read: error */
53 unsigned long feature_addr; /* write: feature */
54 };
55
56 unsigned long nsect_addr;
57 unsigned long lbal_addr;
58 unsigned long lbam_addr;
59 unsigned long lbah_addr;
60
61 unsigned long device_addr;
62
63 union {
64 unsigned long status_addr; /*  read: status  */
65 unsigned long command_addr; /* write: command */
66 };
67
68 unsigned long ctl_addr;
69
70 unsigned long irq_addr;
71 };
72
73 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
74
75 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
76 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
77 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
78 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
79
80 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
81
82 #define SATA_NR_PORTS (3) /* 16 possible ?? */
83
84 #define SATA_STATUS_OFFSET (0)
85 #define SATA_ERROR_OFFSET (1)
86 #define SATA_CONTROL_OFFSET (2)
87
88 /*
89 * Our Physical Region Descriptor (PRD) table should be large enough
90 * to handle the biggest I/O request we are likely to see. Since requests
91 * can have no more than 256 sectors, and since the typical blocksize is
92 * two or more sectors, we could get by with a limit of 128 entries here for
93 * the usual worst case. Most requests seem to include some contiguous blocks,
94 * further reducing the number of table entries required.
95 *
96 * The driver reverts to PIO mode for individual requests that exceed
97 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
98 * 100% of all crazy scenarios here is not necessary.
99 *
100 * As it turns out though, we must allocate a full 4KB page for this,
101 * so the two PRD tables (ide0 & ide1) will each get half of that,
102 * allowing each to have about 256 entries (8 bytes each) from this.
103 */
104 #define PRD_BYTES 8
105 #define PRD_ENTRIES 256
106
107 /*
108 * Some more useful definitions
109 */
110 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
111 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
112 #define SECTOR_SIZE 512
113
114 /*
115 * Timeouts for various operations:
116 */
117 enum {
118 /* spec allows up to 20ms */
119 WAIT_DRQ = HZ / 10, /* 100ms */
120 /* some laptops are very slow */
121 WAIT_READY = 5 * HZ, /* 5s */
122 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
123 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
124 /* worst case when spinning up */
125 WAIT_WORSTCASE = 30 * HZ, /* 30s */
126 /* maximum wait for an IRQ to happen */
127 WAIT_CMD = 10 * HZ, /* 10s */
128 /* Some drives require a longer IRQ timeout. */
129 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
130 /*
131 * Some drives (for example, Seagate STT3401A Travan) require a very
132 * long timeout, because they don't return an interrupt or clear their
133 * BSY bit until after the command completes (even retension commands).
134 */
135 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
136 /* minimum sleep time */
137 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
138 };
139
140 /*
141 * Op codes for special requests to be handled by ide_special_rq().
142 * Values should be in the range of 0x20 to 0x3f.
143 */
144 #define REQ_DRIVE_RESET 0x20
145 #define REQ_DEVSET_EXEC 0x21
146 #define REQ_PARK_HEADS 0x22
147 #define REQ_UNPARK_HEADS 0x23
148
149 /*
150 * Check for an interrupt and acknowledge the interrupt status
151 */
152 struct hwif_s;
153 typedef int (ide_ack_intr_t)(struct hwif_s *);
154
155 /*
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
158 */
159 enum { ide_unknown, ide_generic, ide_pci,
160 ide_cmd640, ide_dtc2278, ide_ali14xx,
161 ide_qd65xx, ide_umc8672, ide_ht6560b,
162 ide_4drives, ide_pmac, ide_acorn,
163 ide_au1xxx, ide_palm3710
164 };
165
166 typedef u8 hwif_chipset_t;
167
168 /*
169 * Structure to hold all information about the location of this port
170 */
171 typedef struct hw_regs_s {
172 union {
173 struct ide_io_ports io_ports;
174 unsigned long io_ports_array[IDE_NR_PORTS];
175 };
176
177 int irq; /* our irq number */
178 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
179 hwif_chipset_t chipset;
180 struct device *dev, *parent;
181 unsigned long config;
182 } hw_regs_t;
183
184 static inline void ide_std_init_ports(hw_regs_t *hw,
185 unsigned long io_addr,
186 unsigned long ctl_addr)
187 {
188 unsigned int i;
189
190 for (i = 0; i <= 7; i++)
191 hw->io_ports_array[i] = io_addr++;
192
193 hw->io_ports.ctl_addr = ctl_addr;
194 }
195
196 #define MAX_HWIFS 10
197
198 /*
199 * Now for the data we need to maintain per-drive: ide_drive_t
200 */
201
202 #define ide_scsi 0x21
203 #define ide_disk 0x20
204 #define ide_optical 0x7
205 #define ide_cdrom 0x5
206 #define ide_tape 0x1
207 #define ide_floppy 0x0
208
209 /*
210 * Special Driver Flags
211 *
212 * set_geometry : respecify drive geometry
213 * recalibrate : seek to cyl 0
214 * set_multmode : set multmode count
215 * reserved : unused
216 */
217 typedef union {
218 unsigned all : 8;
219 struct {
220 unsigned set_geometry : 1;
221 unsigned recalibrate : 1;
222 unsigned set_multmode : 1;
223 unsigned reserved : 5;
224 } b;
225 } special_t;
226
227 /*
228 * Status returned from various ide_ functions
229 */
230 typedef enum {
231 ide_stopped, /* no drive operation was started */
232 ide_started, /* a drive operation was started, handler was set */
233 } ide_startstop_t;
234
235 enum {
236 IDE_TFLAG_LBA48 = (1 << 0),
237 IDE_TFLAG_FLAGGED = (1 << 2),
238 IDE_TFLAG_OUT_DATA = (1 << 3),
239 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
240 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
241 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
242 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
243 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
244 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
245 IDE_TFLAG_OUT_HOB_NSECT |
246 IDE_TFLAG_OUT_HOB_LBAL |
247 IDE_TFLAG_OUT_HOB_LBAM |
248 IDE_TFLAG_OUT_HOB_LBAH,
249 IDE_TFLAG_OUT_FEATURE = (1 << 9),
250 IDE_TFLAG_OUT_NSECT = (1 << 10),
251 IDE_TFLAG_OUT_LBAL = (1 << 11),
252 IDE_TFLAG_OUT_LBAM = (1 << 12),
253 IDE_TFLAG_OUT_LBAH = (1 << 13),
254 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
255 IDE_TFLAG_OUT_NSECT |
256 IDE_TFLAG_OUT_LBAL |
257 IDE_TFLAG_OUT_LBAM |
258 IDE_TFLAG_OUT_LBAH,
259 IDE_TFLAG_OUT_DEVICE = (1 << 14),
260 IDE_TFLAG_WRITE = (1 << 15),
261 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
262 IDE_TFLAG_IN_DATA = (1 << 17),
263 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
264 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
265 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
266 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
267 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
268 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
269 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
270 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
271 IDE_TFLAG_IN_HOB_LBAM |
272 IDE_TFLAG_IN_HOB_LBAH,
273 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
274 IDE_TFLAG_IN_HOB_NSECT |
275 IDE_TFLAG_IN_HOB_LBA,
276 IDE_TFLAG_IN_FEATURE = (1 << 1),
277 IDE_TFLAG_IN_NSECT = (1 << 25),
278 IDE_TFLAG_IN_LBAL = (1 << 26),
279 IDE_TFLAG_IN_LBAM = (1 << 27),
280 IDE_TFLAG_IN_LBAH = (1 << 28),
281 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
282 IDE_TFLAG_IN_LBAM |
283 IDE_TFLAG_IN_LBAH,
284 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
285 IDE_TFLAG_IN_LBA,
286 IDE_TFLAG_IN_DEVICE = (1 << 29),
287 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
288 IDE_TFLAG_IN_HOB,
289 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
290 IDE_TFLAG_IN_TF,
291 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
292 IDE_TFLAG_IN_DEVICE,
293 /* force 16-bit I/O operations */
294 IDE_TFLAG_IO_16BIT = (1 << 30),
295 /* ide_task_t was allocated using kmalloc() */
296 IDE_TFLAG_DYN = (1 << 31),
297 };
298
299 struct ide_taskfile {
300 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
301
302 u8 hob_feature; /* 1-5: additional data to support LBA48 */
303 u8 hob_nsect;
304 u8 hob_lbal;
305 u8 hob_lbam;
306 u8 hob_lbah;
307
308 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
309
310 union { /*  7: */
311 u8 error; /* read: error */
312 u8 feature; /* write: feature */
313 };
314
315 u8 nsect; /* 8: number of sectors */
316 u8 lbal; /* 9: LBA low */
317 u8 lbam; /* 10: LBA mid */
318 u8 lbah; /* 11: LBA high */
319
320 u8 device; /* 12: device select */
321
322 union { /* 13: */
323 u8 status; /*  read: status  */
324 u8 command; /* write: command */
325 };
326 };
327
328 typedef struct ide_task_s {
329 union {
330 struct ide_taskfile tf;
331 u8 tf_array[14];
332 };
333 u32 tf_flags;
334 int data_phase;
335 struct request *rq; /* copy of request */
336 void *special; /* valid_t generally */
337 } ide_task_t;
338
339 /* ATAPI packet command flags */
340 enum {
341 /* set when an error is considered normal - no retry (ide-tape) */
342 PC_FLAG_ABORT = (1 << 0),
343 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
344 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
345 PC_FLAG_DMA_OK = (1 << 3),
346 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
347 PC_FLAG_DMA_ERROR = (1 << 5),
348 PC_FLAG_WRITING = (1 << 6),
349 /* command timed out */
350 PC_FLAG_TIMEDOUT = (1 << 7),
351 };
352
353 /*
354 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
355 * This is used for several packet commands (not for READ/WRITE commands).
356 */
357 #define IDE_PC_BUFFER_SIZE 256
358 #define ATAPI_WAIT_PC (60 * HZ)
359
360 struct ide_atapi_pc {
361 /* actual packet bytes */
362 u8 c[12];
363 /* incremented on each retry */
364 int retries;
365 int error;
366
367 /* bytes to transfer */
368 int req_xfer;
369 /* bytes actually transferred */
370 int xferred;
371
372 /* data buffer */
373 u8 *buf;
374 /* current buffer position */
375 u8 *cur_pos;
376 int buf_size;
377 /* missing/available data on the current buffer */
378 int b_count;
379
380 /* the corresponding request */
381 struct request *rq;
382
383 unsigned long flags;
384
385 /*
386 * those are more or less driver-specific and some of them are subject
387 * to change/removal later.
388 */
389 u8 pc_buf[IDE_PC_BUFFER_SIZE];
390
391 /* idetape only */
392 struct idetape_bh *bh;
393 char *b_data;
394
395 struct scatterlist *sg;
396 unsigned int sg_cnt;
397
398 unsigned long timeout;
399 };
400
401 struct ide_devset;
402 struct ide_driver;
403
404 #ifdef CONFIG_BLK_DEV_IDEACPI
405 struct ide_acpi_drive_link;
406 struct ide_acpi_hwif_link;
407 #endif
408
409 struct ide_drive_s;
410
411 struct ide_disk_ops {
412 int (*check)(struct ide_drive_s *, const char *);
413 int (*get_capacity)(struct ide_drive_s *);
414 void (*setup)(struct ide_drive_s *);
415 void (*flush)(struct ide_drive_s *);
416 int (*init_media)(struct ide_drive_s *, struct gendisk *);
417 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
418 int);
419 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
420 sector_t);
421 int (*end_request)(struct ide_drive_s *, int, int);
422 int (*ioctl)(struct ide_drive_s *, struct block_device *,
423 fmode_t, unsigned int, unsigned long);
424 };
425
426 /* ATAPI device flags */
427 enum {
428 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
429
430 /* ide-cd */
431 /* Drive cannot eject the disc. */
432 IDE_AFLAG_NO_EJECT = (1 << 1),
433 /* Drive is a pre ATAPI 1.2 drive. */
434 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
435 /* TOC addresses are in BCD. */
436 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
437 /* TOC track numbers are in BCD. */
438 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
439 /*
440 * Drive does not provide data in multiples of SECTOR_SIZE
441 * when more than one interrupt is needed.
442 */
443 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
444 /* Saved TOC information is current. */
445 IDE_AFLAG_TOC_VALID = (1 << 6),
446 /* We think that the drive door is locked. */
447 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
448 /* SET_CD_SPEED command is unsupported. */
449 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
450 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
451 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
452 IDE_AFLAG_SANYO_3CD = (1 << 11),
453 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
454 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
455 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
456
457 /* ide-floppy */
458 /* Avoid commands not supported in Clik drive */
459 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
460 /* Requires BH algorithm for packets */
461 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
462 /* Supports format progress report */
463 IDE_AFLAG_SRFP = (1 << 17),
464
465 /* ide-tape */
466 IDE_AFLAG_IGNORE_DSC = (1 << 18),
467 /* 0 When the tape position is unknown */
468 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
469 /* Device already opened */
470 IDE_AFLAG_BUSY = (1 << 20),
471 /* Attempt to auto-detect the current user block size */
472 IDE_AFLAG_DETECT_BS = (1 << 21),
473 /* Currently on a filemark */
474 IDE_AFLAG_FILEMARK = (1 << 22),
475 /* 0 = no tape is loaded, so we don't rewind after ejecting */
476 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
477
478 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
479 };
480
481 /* device flags */
482 enum {
483 /* restore settings after device reset */
484 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
485 /* device is using DMA for read/write */
486 IDE_DFLAG_USING_DMA = (1 << 1),
487 /* okay to unmask other IRQs */
488 IDE_DFLAG_UNMASK = (1 << 2),
489 /* don't attempt flushes */
490 IDE_DFLAG_NOFLUSH = (1 << 3),
491 /* DSC overlap */
492 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
493 /* give potential excess bandwidth */
494 IDE_DFLAG_NICE1 = (1 << 5),
495 /* device is physically present */
496 IDE_DFLAG_PRESENT = (1 << 6),
497 /* id read from device (synthetic if not set) */
498 IDE_DFLAG_ID_READ = (1 << 8),
499 IDE_DFLAG_NOPROBE = (1 << 9),
500 /* need to do check_media_change() */
501 IDE_DFLAG_REMOVABLE = (1 << 10),
502 /* needed for removable devices */
503 IDE_DFLAG_ATTACH = (1 << 11),
504 IDE_DFLAG_FORCED_GEOM = (1 << 12),
505 /* disallow setting unmask bit */
506 IDE_DFLAG_NO_UNMASK = (1 << 13),
507 /* disallow enabling 32-bit I/O */
508 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
509 /* for removable only: door lock/unlock works */
510 IDE_DFLAG_DOORLOCKING = (1 << 15),
511 /* disallow DMA */
512 IDE_DFLAG_NODMA = (1 << 16),
513 /* powermanagment told us not to do anything, so sleep nicely */
514 IDE_DFLAG_BLOCKED = (1 << 17),
515 /* sleeping & sleep field valid */
516 IDE_DFLAG_SLEEPING = (1 << 18),
517 IDE_DFLAG_POST_RESET = (1 << 19),
518 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
519 IDE_DFLAG_LBA48 = (1 << 21),
520 /* status of write cache */
521 IDE_DFLAG_WCACHE = (1 << 22),
522 /* used for ignoring ATA_DF */
523 IDE_DFLAG_NOWERR = (1 << 23),
524 /* retrying in PIO */
525 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
526 IDE_DFLAG_LBA = (1 << 25),
527 /* don't unload heads */
528 IDE_DFLAG_NO_UNLOAD = (1 << 26),
529 /* heads unloaded, please don't reset port */
530 IDE_DFLAG_PARKED = (1 << 27),
531 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
532 /* write protect */
533 IDE_DFLAG_WP = (1 << 29),
534 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
535 };
536
537 struct ide_drive_s {
538 char name[4]; /* drive name, such as "hda" */
539 char driver_req[10]; /* requests specific driver */
540
541 struct request_queue *queue; /* request queue */
542
543 struct request *rq; /* current request */
544 void *driver_data; /* extra driver data */
545 u16 *id; /* identification info */
546 #ifdef CONFIG_IDE_PROC_FS
547 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
548 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
549 #endif
550 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
551
552 const struct ide_disk_ops *disk_ops;
553
554 unsigned long dev_flags;
555
556 unsigned long sleep; /* sleep until this time */
557 unsigned long timeout; /* max time to wait for irq */
558
559 special_t special; /* special action flags */
560
561 u8 select; /* basic drive/head select reg value */
562 u8 retry_pio; /* retrying dma capable host in pio */
563 u8 waiting_for_dma; /* dma currently in progress */
564 u8 dma; /* atapi dma flag */
565
566 u8 quirk_list; /* considered quirky, set for a specific host */
567 u8 init_speed; /* transfer rate set at boot */
568 u8 current_speed; /* current transfer rate set */
569 u8 desired_speed; /* desired transfer rate set */
570 u8 dn; /* now wide spread use */
571 u8 acoustic; /* acoustic management */
572 u8 media; /* disk, cdrom, tape, floppy, ... */
573 u8 ready_stat; /* min status value for drive ready */
574 u8 mult_count; /* current multiple sector setting */
575 u8 mult_req; /* requested multiple sector setting */
576 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
577 u8 bad_wstat; /* used for ignoring ATA_DF */
578 u8 head; /* "real" number of heads */
579 u8 sect; /* "real" sectors per track */
580 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
581 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
582
583 /* delay this long before sending packet command */
584 u8 pc_delay;
585
586 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
587 unsigned int cyl; /* "real" number of cyls */
588 unsigned int drive_data; /* used by set_pio_mode/selectproc */
589 unsigned int failures; /* current failure count */
590 unsigned int max_failures; /* maximum allowed failure count */
591 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
592
593 u64 capacity64; /* total number of sectors */
594
595 int lun; /* logical unit */
596 int crc_count; /* crc counter to reduce drive speed */
597
598 unsigned long debug_mask; /* debugging levels switch */
599
600 #ifdef CONFIG_BLK_DEV_IDEACPI
601 struct ide_acpi_drive_link *acpidata;
602 #endif
603 struct list_head list;
604 struct device gendev;
605 struct completion gendev_rel_comp; /* to deal with device release() */
606
607 /* current packet command */
608 struct ide_atapi_pc *pc;
609
610 /* callback for packet commands */
611 void (*pc_callback)(struct ide_drive_s *, int);
612
613 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
614 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
615 unsigned int, int);
616
617 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
618
619 unsigned long atapi_flags;
620
621 struct ide_atapi_pc request_sense_pc;
622 struct request request_sense_rq;
623 };
624
625 typedef struct ide_drive_s ide_drive_t;
626
627 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
628
629 #define to_ide_drv(obj, cont_type) \
630 container_of(obj, struct cont_type, dev)
631
632 #define ide_drv_g(disk, cont_type) \
633 container_of((disk)->private_data, struct cont_type, driver)
634
635 struct ide_port_info;
636
637 struct ide_tp_ops {
638 void (*exec_command)(struct hwif_s *, u8);
639 u8 (*read_status)(struct hwif_s *);
640 u8 (*read_altstatus)(struct hwif_s *);
641
642 void (*set_irq)(struct hwif_s *, int);
643
644 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
645 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
646
647 void (*input_data)(ide_drive_t *, struct request *, void *,
648 unsigned int);
649 void (*output_data)(ide_drive_t *, struct request *, void *,
650 unsigned int);
651 };
652
653 extern const struct ide_tp_ops default_tp_ops;
654
655 /**
656 * struct ide_port_ops - IDE port operations
657 *
658 * @init_dev: host specific initialization of a device
659 * @set_pio_mode: routine to program host for PIO mode
660 * @set_dma_mode: routine to program host for DMA mode
661 * @selectproc: tweaks hardware to select drive
662 * @reset_poll: chipset polling based on hba specifics
663 * @pre_reset: chipset specific changes to default for device-hba resets
664 * @resetproc: routine to reset controller after a disk reset
665 * @maskproc: special host masking for drive selection
666 * @quirkproc: check host's drive quirk list
667 * @clear_irq: clear IRQ
668 *
669 * @mdma_filter: filter MDMA modes
670 * @udma_filter: filter UDMA modes
671 *
672 * @cable_detect: detect cable type
673 */
674 struct ide_port_ops {
675 void (*init_dev)(ide_drive_t *);
676 void (*set_pio_mode)(ide_drive_t *, const u8);
677 void (*set_dma_mode)(ide_drive_t *, const u8);
678 void (*selectproc)(ide_drive_t *);
679 int (*reset_poll)(ide_drive_t *);
680 void (*pre_reset)(ide_drive_t *);
681 void (*resetproc)(ide_drive_t *);
682 void (*maskproc)(ide_drive_t *, int);
683 void (*quirkproc)(ide_drive_t *);
684 void (*clear_irq)(ide_drive_t *);
685
686 u8 (*mdma_filter)(ide_drive_t *);
687 u8 (*udma_filter)(ide_drive_t *);
688
689 u8 (*cable_detect)(struct hwif_s *);
690 };
691
692 struct ide_dma_ops {
693 void (*dma_host_set)(struct ide_drive_s *, int);
694 int (*dma_setup)(struct ide_drive_s *);
695 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
696 void (*dma_start)(struct ide_drive_s *);
697 int (*dma_end)(struct ide_drive_s *);
698 int (*dma_test_irq)(struct ide_drive_s *);
699 void (*dma_lost_irq)(struct ide_drive_s *);
700 void (*dma_timeout)(struct ide_drive_s *);
701 /*
702 * The following method is optional and only required to be
703 * implemented for the SFF-8038i compatible controllers.
704 */
705 u8 (*dma_sff_read_status)(struct hwif_s *);
706 };
707
708 struct ide_host;
709
710 typedef struct hwif_s {
711 struct hwif_s *mate; /* other hwif from same PCI chip */
712 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
713
714 struct ide_host *host;
715
716 char name[6]; /* name of interface, eg. "ide0" */
717
718 struct ide_io_ports io_ports;
719
720 unsigned long sata_scr[SATA_NR_PORTS];
721
722 ide_drive_t *devices[MAX_DRIVES + 1];
723
724 u8 major; /* our major number */
725 u8 index; /* 0 for ide0; 1 for ide1; ... */
726 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
727
728 u32 host_flags;
729
730 u8 pio_mask;
731
732 u8 ultra_mask;
733 u8 mwdma_mask;
734 u8 swdma_mask;
735
736 u8 cbl; /* cable type */
737
738 hwif_chipset_t chipset; /* sub-module for tuning.. */
739
740 struct device *dev;
741
742 ide_ack_intr_t *ack_intr;
743
744 void (*rw_disk)(ide_drive_t *, struct request *);
745
746 const struct ide_tp_ops *tp_ops;
747 const struct ide_port_ops *port_ops;
748 const struct ide_dma_ops *dma_ops;
749
750 /* dma physical region descriptor table (cpu view) */
751 unsigned int *dmatable_cpu;
752 /* dma physical region descriptor table (dma view) */
753 dma_addr_t dmatable_dma;
754
755 /* maximum number of PRD table entries */
756 int prd_max_nents;
757 /* PRD entry size in bytes */
758 int prd_ent_size;
759
760 /* Scatter-gather list used to build the above */
761 struct scatterlist *sg_table;
762 int sg_max_nents; /* Maximum number of entries in it */
763 int sg_nents; /* Current number of entries in it */
764 int orig_sg_nents;
765 int sg_dma_direction; /* dma transfer direction */
766
767 /* data phase of the active command (currently only valid for PIO/DMA) */
768 int data_phase;
769
770 struct ide_task_s task; /* current command */
771
772 unsigned int nsect;
773 unsigned int nleft;
774 struct scatterlist *cursg;
775 unsigned int cursg_ofs;
776
777 int rqsize; /* max sectors per request */
778 int irq; /* our irq number */
779
780 unsigned long dma_base; /* base addr for dma ports */
781
782 unsigned long config_data; /* for use by chipset-specific code */
783 unsigned long select_data; /* for use by chipset-specific code */
784
785 unsigned long extra_base; /* extra addr for dma ports */
786 unsigned extra_ports; /* number of extra dma ports */
787
788 unsigned present : 1; /* this interface exists */
789 unsigned busy : 1; /* serializes devices on a port */
790
791 struct device gendev;
792 struct device *portdev;
793
794 struct completion gendev_rel_comp; /* To deal with device release() */
795
796 void *hwif_data; /* extra hwif data */
797
798 #ifdef CONFIG_BLK_DEV_IDEACPI
799 struct ide_acpi_hwif_link *acpidata;
800 #endif
801
802 /* IRQ handler, if active */
803 ide_startstop_t (*handler)(ide_drive_t *);
804
805 /* BOOL: polling active & poll_timeout field valid */
806 unsigned int polling : 1;
807
808 /* current drive */
809 ide_drive_t *cur_dev;
810
811 /* current request */
812 struct request *rq;
813
814 /* failsafe timer */
815 struct timer_list timer;
816 /* timeout value during long polls */
817 unsigned long poll_timeout;
818 /* queried upon timeouts */
819 int (*expiry)(ide_drive_t *);
820
821 int req_gen;
822 int req_gen_timer;
823
824 spinlock_t lock;
825 } ____cacheline_internodealigned_in_smp ide_hwif_t;
826
827 #define MAX_HOST_PORTS 4
828
829 struct ide_host {
830 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
831 unsigned int n_ports;
832 struct device *dev[2];
833
834 int (*init_chipset)(struct pci_dev *);
835
836 void (*get_lock)(irq_handler_t, void *);
837 void (*release_lock)(void);
838
839 irq_handler_t irq_handler;
840
841 unsigned long host_flags;
842
843 int irq_flags;
844
845 void *host_priv;
846 ide_hwif_t *cur_port; /* for hosts requiring serialization */
847
848 /* used for hosts requiring serialization */
849 volatile unsigned long host_busy;
850 };
851
852 #define IDE_HOST_BUSY 0
853
854 /*
855 * internal ide interrupt handler type
856 */
857 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
858 typedef int (ide_expiry_t)(ide_drive_t *);
859
860 /* used by ide-cd, ide-floppy, etc. */
861 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
862
863 extern struct mutex ide_setting_mtx;
864
865 /*
866 * configurable drive settings
867 */
868
869 #define DS_SYNC (1 << 0)
870
871 struct ide_devset {
872 int (*get)(ide_drive_t *);
873 int (*set)(ide_drive_t *, int);
874 unsigned int flags;
875 };
876
877 #define __DEVSET(_flags, _get, _set) { \
878 .flags = _flags, \
879 .get = _get, \
880 .set = _set, \
881 }
882
883 #define ide_devset_get(name, field) \
884 static int get_##name(ide_drive_t *drive) \
885 { \
886 return drive->field; \
887 }
888
889 #define ide_devset_set(name, field) \
890 static int set_##name(ide_drive_t *drive, int arg) \
891 { \
892 drive->field = arg; \
893 return 0; \
894 }
895
896 #define ide_devset_get_flag(name, flag) \
897 static int get_##name(ide_drive_t *drive) \
898 { \
899 return !!(drive->dev_flags & flag); \
900 }
901
902 #define ide_devset_set_flag(name, flag) \
903 static int set_##name(ide_drive_t *drive, int arg) \
904 { \
905 if (arg) \
906 drive->dev_flags |= flag; \
907 else \
908 drive->dev_flags &= ~flag; \
909 return 0; \
910 }
911
912 #define __IDE_DEVSET(_name, _flags, _get, _set) \
913 const struct ide_devset ide_devset_##_name = \
914 __DEVSET(_flags, _get, _set)
915
916 #define IDE_DEVSET(_name, _flags, _get, _set) \
917 static __IDE_DEVSET(_name, _flags, _get, _set)
918
919 #define ide_devset_rw(_name, _func) \
920 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
921
922 #define ide_devset_w(_name, _func) \
923 IDE_DEVSET(_name, 0, NULL, set_##_func)
924
925 #define ide_ext_devset_rw(_name, _func) \
926 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
927
928 #define ide_ext_devset_rw_sync(_name, _func) \
929 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
930
931 #define ide_decl_devset(_name) \
932 extern const struct ide_devset ide_devset_##_name
933
934 ide_decl_devset(io_32bit);
935 ide_decl_devset(keepsettings);
936 ide_decl_devset(pio_mode);
937 ide_decl_devset(unmaskirq);
938 ide_decl_devset(using_dma);
939
940 #ifdef CONFIG_IDE_PROC_FS
941 /*
942 * /proc/ide interface
943 */
944
945 #define ide_devset_rw_field(_name, _field) \
946 ide_devset_get(_name, _field); \
947 ide_devset_set(_name, _field); \
948 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
949
950 #define ide_devset_rw_flag(_name, _field) \
951 ide_devset_get_flag(_name, _field); \
952 ide_devset_set_flag(_name, _field); \
953 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
954
955 struct ide_proc_devset {
956 const char *name;
957 const struct ide_devset *setting;
958 int min, max;
959 int (*mulf)(ide_drive_t *);
960 int (*divf)(ide_drive_t *);
961 };
962
963 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
964 .name = __stringify(_name), \
965 .setting = &ide_devset_##_name, \
966 .min = _min, \
967 .max = _max, \
968 .mulf = _mulf, \
969 .divf = _divf, \
970 }
971
972 #define IDE_PROC_DEVSET(_name, _min, _max) \
973 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
974
975 typedef struct {
976 const char *name;
977 mode_t mode;
978 read_proc_t *read_proc;
979 write_proc_t *write_proc;
980 } ide_proc_entry_t;
981
982 void proc_ide_create(void);
983 void proc_ide_destroy(void);
984 void ide_proc_register_port(ide_hwif_t *);
985 void ide_proc_port_register_devices(ide_hwif_t *);
986 void ide_proc_unregister_device(ide_drive_t *);
987 void ide_proc_unregister_port(ide_hwif_t *);
988 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
989 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
990
991 read_proc_t proc_ide_read_capacity;
992 read_proc_t proc_ide_read_geometry;
993
994 /*
995 * Standard exit stuff:
996 */
997 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
998 { \
999 len -= off; \
1000 if (len < count) { \
1001 *eof = 1; \
1002 if (len <= 0) \
1003 return 0; \
1004 } else \
1005 len = count; \
1006 *start = page + off; \
1007 return len; \
1008 }
1009 #else
1010 static inline void proc_ide_create(void) { ; }
1011 static inline void proc_ide_destroy(void) { ; }
1012 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1013 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1014 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1015 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1016 static inline void ide_proc_register_driver(ide_drive_t *drive,
1017 struct ide_driver *driver) { ; }
1018 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1019 struct ide_driver *driver) { ; }
1020 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1021 #endif
1022
1023 enum {
1024 /* enter/exit functions */
1025 IDE_DBG_FUNC = (1 << 0),
1026 /* sense key/asc handling */
1027 IDE_DBG_SENSE = (1 << 1),
1028 /* packet commands handling */
1029 IDE_DBG_PC = (1 << 2),
1030 /* request handling */
1031 IDE_DBG_RQ = (1 << 3),
1032 /* driver probing/setup */
1033 IDE_DBG_PROBE = (1 << 4),
1034 };
1035
1036 /* DRV_NAME has to be defined in the driver before using the macro below */
1037 #define __ide_debug_log(lvl, fmt, args...) \
1038 { \
1039 if (unlikely(drive->debug_mask & lvl)) \
1040 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1041 __func__, ## args); \
1042 }
1043
1044 /*
1045 * Power Management state machine (rq->pm->pm_step).
1046 *
1047 * For each step, the core calls ide_start_power_step() first.
1048 * This can return:
1049 * - ide_stopped : In this case, the core calls us back again unless
1050 * step have been set to ide_power_state_completed.
1051 * - ide_started : In this case, the channel is left busy until an
1052 * async event (interrupt) occurs.
1053 * Typically, ide_start_power_step() will issue a taskfile request with
1054 * do_rw_taskfile().
1055 *
1056 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1057 * with the error code if any. This routine should update the step value
1058 * and return. It should not start a new request. The core will call
1059 * ide_start_power_step() for the new step value, unless step have been
1060 * set to IDE_PM_COMPLETED.
1061 */
1062 enum {
1063 IDE_PM_START_SUSPEND,
1064 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1065 IDE_PM_STANDBY,
1066
1067 IDE_PM_START_RESUME,
1068 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1069 IDE_PM_IDLE,
1070 IDE_PM_RESTORE_DMA,
1071
1072 IDE_PM_COMPLETED,
1073 };
1074
1075 int generic_ide_suspend(struct device *, pm_message_t);
1076 int generic_ide_resume(struct device *);
1077
1078 void ide_complete_power_step(ide_drive_t *, struct request *);
1079 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1080 void ide_complete_pm_request(ide_drive_t *, struct request *);
1081 void ide_check_pm_state(ide_drive_t *, struct request *);
1082
1083 /*
1084 * Subdrivers support.
1085 *
1086 * The gendriver.owner field should be set to the module owner of this driver.
1087 * The gendriver.name field should be set to the name of this driver
1088 */
1089 struct ide_driver {
1090 const char *version;
1091 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1092 int (*end_request)(ide_drive_t *, int, int);
1093 struct device_driver gen_driver;
1094 int (*probe)(ide_drive_t *);
1095 void (*remove)(ide_drive_t *);
1096 void (*resume)(ide_drive_t *);
1097 void (*shutdown)(ide_drive_t *);
1098 #ifdef CONFIG_IDE_PROC_FS
1099 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1100 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1101 #endif
1102 };
1103
1104 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1105
1106 int ide_device_get(ide_drive_t *);
1107 void ide_device_put(ide_drive_t *);
1108
1109 struct ide_ioctl_devset {
1110 unsigned int get_ioctl;
1111 unsigned int set_ioctl;
1112 const struct ide_devset *setting;
1113 };
1114
1115 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1116 unsigned long, const struct ide_ioctl_devset *);
1117
1118 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1119
1120 extern int ide_vlb_clk;
1121 extern int ide_pci_clk;
1122
1123 int ide_end_request(ide_drive_t *, int, int);
1124 int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
1125 void ide_kill_rq(ide_drive_t *, struct request *);
1126
1127 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1128 ide_expiry_t *);
1129 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1130 ide_expiry_t *);
1131
1132 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1133 ide_expiry_t *);
1134
1135 void ide_execute_pkt_cmd(ide_drive_t *);
1136
1137 void ide_pad_transfer(ide_drive_t *, int, int);
1138
1139 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1140
1141 void ide_fix_driveid(u16 *);
1142
1143 extern void ide_fixstring(u8 *, const int, const int);
1144
1145 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1146
1147 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1148
1149 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1150 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1151
1152 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1153
1154 extern int ide_devset_execute(ide_drive_t *drive,
1155 const struct ide_devset *setting, int arg);
1156
1157 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1158
1159 void ide_tf_dump(const char *, struct ide_taskfile *);
1160
1161 void ide_exec_command(ide_hwif_t *, u8);
1162 u8 ide_read_status(ide_hwif_t *);
1163 u8 ide_read_altstatus(ide_hwif_t *);
1164
1165 void ide_set_irq(ide_hwif_t *, int);
1166
1167 void ide_tf_load(ide_drive_t *, ide_task_t *);
1168 void ide_tf_read(ide_drive_t *, ide_task_t *);
1169
1170 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1171 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1172
1173 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, 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 *);
1218
1219 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1220
1221 void task_end_request(ide_drive_t *, struct request *, u8);
1222
1223 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1224 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1225
1226 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1227
1228 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1229
1230 extern int ide_driveid_update(ide_drive_t *);
1231 extern int ide_config_drive_speed(ide_drive_t *, u8);
1232 extern u8 eighty_ninty_three (ide_drive_t *);
1233 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1234
1235 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1236
1237 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1238
1239 extern void ide_timer_expiry(unsigned long);
1240 extern irqreturn_t ide_intr(int irq, void *dev_id);
1241 extern void do_ide_request(struct request_queue *);
1242
1243 void ide_init_disk(struct gendisk *, ide_drive_t *);
1244
1245 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1246 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1247 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1248 #else
1249 #define ide_pci_register_driver(d) pci_register_driver(d)
1250 #endif
1251
1252 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1253 {
1254 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1255 return 1;
1256 return 0;
1257 }
1258
1259 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1260 hw_regs_t *, hw_regs_t **);
1261 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1262
1263 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1264 int ide_pci_set_master(struct pci_dev *, const char *);
1265 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1266 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1267 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1268 #else
1269 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1270 const struct ide_port_info *d)
1271 {
1272 return -EINVAL;
1273 }
1274 #endif
1275
1276 struct ide_pci_enablebit {
1277 u8 reg; /* byte pci reg holding the enable-bit */
1278 u8 mask; /* mask to isolate the enable-bit */
1279 u8 val; /* value of masked reg when "enabled" */
1280 };
1281
1282 enum {
1283 /* Uses ISA control ports not PCI ones. */
1284 IDE_HFLAG_ISA_PORTS = (1 << 0),
1285 /* single port device */
1286 IDE_HFLAG_SINGLE = (1 << 1),
1287 /* don't use legacy PIO blacklist */
1288 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1289 /* set for the second port of QD65xx */
1290 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1291 /* use PIO8/9 for prefetch off/on */
1292 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1293 /* use PIO6/7 for fast-devsel off/on */
1294 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1295 /* use 100-102 and 200-202 PIO values to set DMA modes */
1296 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1297 /*
1298 * keep DMA setting when programming PIO mode, may be used only
1299 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1300 */
1301 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1302 /* program host for the transfer mode after programming device */
1303 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1304 /* don't program host/device for the transfer mode ("smart" hosts) */
1305 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1306 /* trust BIOS for programming chipset/device for DMA */
1307 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1308 /* host is CS5510/CS5520 */
1309 IDE_HFLAG_CS5520 = (1 << 11),
1310 /* ATAPI DMA is unsupported */
1311 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1312 /* set if host is a "non-bootable" controller */
1313 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1314 /* host doesn't support DMA */
1315 IDE_HFLAG_NO_DMA = (1 << 14),
1316 /* check if host is PCI IDE device before allowing DMA */
1317 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1318 /* host uses MMIO */
1319 IDE_HFLAG_MMIO = (1 << 16),
1320 /* no LBA48 */
1321 IDE_HFLAG_NO_LBA48 = (1 << 17),
1322 /* no LBA48 DMA */
1323 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1324 /* data FIFO is cleared by an error */
1325 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1326 /* serialize ports */
1327 IDE_HFLAG_SERIALIZE = (1 << 20),
1328 /* host is DTC2278 */
1329 IDE_HFLAG_DTC2278 = (1 << 21),
1330 /* host is TRM290 */
1331 IDE_HFLAG_TRM290 = (1 << 23),
1332 /* use 32-bit I/O ops */
1333 IDE_HFLAG_IO_32BIT = (1 << 24),
1334 /* unmask IRQs */
1335 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1336 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1337 /* serialize ports if DMA is possible (for sl82c105) */
1338 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1339 /* force host out of "simplex" mode */
1340 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1341 /* DSC overlap is unsupported */
1342 IDE_HFLAG_NO_DSC = (1 << 29),
1343 /* never use 32-bit I/O ops */
1344 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1345 /* never unmask IRQs */
1346 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1347 };
1348
1349 #ifdef CONFIG_BLK_DEV_OFFBOARD
1350 # define IDE_HFLAG_OFF_BOARD 0
1351 #else
1352 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1353 #endif
1354
1355 struct ide_port_info {
1356 char *name;
1357
1358 int (*init_chipset)(struct pci_dev *);
1359
1360 void (*get_lock)(irq_handler_t, void *);
1361 void (*release_lock)(void);
1362
1363 void (*init_iops)(ide_hwif_t *);
1364 void (*init_hwif)(ide_hwif_t *);
1365 int (*init_dma)(ide_hwif_t *,
1366 const struct ide_port_info *);
1367
1368 const struct ide_tp_ops *tp_ops;
1369 const struct ide_port_ops *port_ops;
1370 const struct ide_dma_ops *dma_ops;
1371
1372 struct ide_pci_enablebit enablebits[2];
1373
1374 hwif_chipset_t chipset;
1375
1376 u16 max_sectors; /* if < than the default one */
1377
1378 u32 host_flags;
1379
1380 int irq_flags;
1381
1382 u8 pio_mask;
1383 u8 swdma_mask;
1384 u8 mwdma_mask;
1385 u8 udma_mask;
1386 };
1387
1388 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1389 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1390 const struct ide_port_info *, void *);
1391 void ide_pci_remove(struct pci_dev *);
1392
1393 #ifdef CONFIG_PM
1394 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1395 int ide_pci_resume(struct pci_dev *);
1396 #else
1397 #define ide_pci_suspend NULL
1398 #define ide_pci_resume NULL
1399 #endif
1400
1401 void ide_map_sg(ide_drive_t *, struct request *);
1402 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1403
1404 #define BAD_DMA_DRIVE 0
1405 #define GOOD_DMA_DRIVE 1
1406
1407 struct drive_list_entry {
1408 const char *id_model;
1409 const char *id_firmware;
1410 };
1411
1412 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1413
1414 #ifdef CONFIG_BLK_DEV_IDEDMA
1415 int ide_dma_good_drive(ide_drive_t *);
1416 int __ide_dma_bad_drive(ide_drive_t *);
1417 int ide_id_dma_bug(ide_drive_t *);
1418
1419 u8 ide_find_dma_mode(ide_drive_t *, u8);
1420
1421 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1422 {
1423 return ide_find_dma_mode(drive, XFER_UDMA_6);
1424 }
1425
1426 void ide_dma_off_quietly(ide_drive_t *);
1427 void ide_dma_off(ide_drive_t *);
1428 void ide_dma_on(ide_drive_t *);
1429 int ide_set_dma(ide_drive_t *);
1430 void ide_check_dma_crc(ide_drive_t *);
1431 ide_startstop_t ide_dma_intr(ide_drive_t *);
1432
1433 int ide_allocate_dma_engine(ide_hwif_t *);
1434 void ide_release_dma_engine(ide_hwif_t *);
1435
1436 int ide_build_sglist(ide_drive_t *, struct request *);
1437 void ide_destroy_dmatable(ide_drive_t *);
1438
1439 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1440 int config_drive_for_dma(ide_drive_t *);
1441 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1442 void ide_dma_host_set(ide_drive_t *, int);
1443 extern int ide_dma_setup(ide_drive_t *);
1444 void ide_dma_exec_cmd(ide_drive_t *, u8);
1445 extern void ide_dma_start(ide_drive_t *);
1446 int ide_dma_end(ide_drive_t *);
1447 int ide_dma_test_irq(ide_drive_t *);
1448 u8 ide_dma_sff_read_status(ide_hwif_t *);
1449 extern const struct ide_dma_ops sff_dma_ops;
1450 #else
1451 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1452 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1453
1454 void ide_dma_lost_irq(ide_drive_t *);
1455 void ide_dma_timeout(ide_drive_t *);
1456 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1457
1458 #else
1459 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1460 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1461 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1462 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1463 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1464 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1465 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1466 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1467 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1468 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1469 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1470 #endif /* CONFIG_BLK_DEV_IDEDMA */
1471
1472 #ifdef CONFIG_BLK_DEV_IDEACPI
1473 int ide_acpi_init(void);
1474 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1475 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1476 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1477 void ide_acpi_init_port(ide_hwif_t *);
1478 void ide_acpi_port_init_devices(ide_hwif_t *);
1479 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1480 #else
1481 static inline int ide_acpi_init(void) { return 0; }
1482 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1483 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1484 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1485 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1486 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1487 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1488 #endif
1489
1490 void ide_register_region(struct gendisk *);
1491 void ide_unregister_region(struct gendisk *);
1492
1493 void ide_undecoded_slave(ide_drive_t *);
1494
1495 void ide_port_apply_params(ide_hwif_t *);
1496 int ide_sysfs_register_port(ide_hwif_t *);
1497
1498 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1499 void ide_host_free(struct ide_host *);
1500 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1501 hw_regs_t **);
1502 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1503 struct ide_host **);
1504 void ide_host_remove(struct ide_host *);
1505 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1506 void ide_port_unregister_devices(ide_hwif_t *);
1507 void ide_port_scan(ide_hwif_t *);
1508
1509 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1510 {
1511 return hwif->hwif_data;
1512 }
1513
1514 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1515 {
1516 hwif->hwif_data = data;
1517 }
1518
1519 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1520
1521 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1522 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1523
1524 struct ide_timing {
1525 u8 mode;
1526 u8 setup; /* t1 */
1527 u16 act8b; /* t2 for 8-bit io */
1528 u16 rec8b; /* t2i for 8-bit io */
1529 u16 cyc8b; /* t0 for 8-bit io */
1530 u16 active; /* t2 or tD */
1531 u16 recover; /* t2i or tK */
1532 u16 cycle; /* t0 */
1533 u16 udma; /* t2CYCTYP/2 */
1534 };
1535
1536 enum {
1537 IDE_TIMING_SETUP = (1 << 0),
1538 IDE_TIMING_ACT8B = (1 << 1),
1539 IDE_TIMING_REC8B = (1 << 2),
1540 IDE_TIMING_CYC8B = (1 << 3),
1541 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1542 IDE_TIMING_CYC8B,
1543 IDE_TIMING_ACTIVE = (1 << 4),
1544 IDE_TIMING_RECOVER = (1 << 5),
1545 IDE_TIMING_CYCLE = (1 << 6),
1546 IDE_TIMING_UDMA = (1 << 7),
1547 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1548 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1549 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1550 };
1551
1552 struct ide_timing *ide_timing_find_mode(u8);
1553 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1554 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1555 struct ide_timing *, unsigned int);
1556 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1557
1558 #ifdef CONFIG_IDE_XFER_MODE
1559 int ide_scan_pio_blacklist(char *);
1560 const char *ide_xfer_verbose(u8);
1561 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1562 int ide_set_pio_mode(ide_drive_t *, u8);
1563 int ide_set_dma_mode(ide_drive_t *, u8);
1564 void ide_set_pio(ide_drive_t *, u8);
1565 int ide_set_xfer_rate(ide_drive_t *, u8);
1566 #else
1567 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1568 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1569 #endif
1570
1571 static inline void ide_set_max_pio(ide_drive_t *drive)
1572 {
1573 ide_set_pio(drive, 255);
1574 }
1575
1576 char *ide_media_string(ide_drive_t *);
1577
1578 extern struct device_attribute ide_dev_attrs[];
1579 extern struct bus_type ide_bus_type;
1580 extern struct class *ide_port_class;
1581
1582 static inline void ide_dump_identify(u8 *id)
1583 {
1584 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1585 }
1586
1587 static inline int hwif_to_node(ide_hwif_t *hwif)
1588 {
1589 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1590 }
1591
1592 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1593 {
1594 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1595
1596 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1597 }
1598
1599 #define ide_port_for_each_dev(i, dev, port) \
1600 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1601
1602 #define ide_port_for_each_present_dev(i, dev, port) \
1603 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1604 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1605
1606 #define ide_host_for_each_port(i, port, host) \
1607 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1608
1609 #endif /* _IDE_H */
Support for the Chinese Samsung S3C2440 based development boards