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new retransmit part 3
[cor_2_6_31.git] / include / linux / ide.h
blobedc93a6d931db45fecc9ba3064aecb0619ea6115
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 /* for request_sense */
30 #include <linux/cdrom.h>
31
32 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
33 # define SUPPORT_VLB_SYNC 0
34 #else
35 # define SUPPORT_VLB_SYNC 1
36 #endif
37
38 /*
39 * Probably not wise to fiddle with these
40 */
41 #define IDE_DEFAULT_MAX_FAILURES 1
42 #define ERROR_MAX 8 /* Max read/write errors per sector */
43 #define ERROR_RESET 3 /* Reset controller every 4th retry */
44 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
45
46 /* Error codes returned in rq->errors to the higher part of the driver. */
47 enum {
48 IDE_DRV_ERROR_GENERAL = 101,
49 IDE_DRV_ERROR_FILEMARK = 102,
50 IDE_DRV_ERROR_EOD = 103,
51 };
52
53 /*
54 * Definitions for accessing IDE controller registers
55 */
56 #define IDE_NR_PORTS (10)
57
58 struct ide_io_ports {
59 unsigned long data_addr;
60
61 union {
62 unsigned long error_addr; /* read: error */
63 unsigned long feature_addr; /* write: feature */
64 };
65
66 unsigned long nsect_addr;
67 unsigned long lbal_addr;
68 unsigned long lbam_addr;
69 unsigned long lbah_addr;
70
71 unsigned long device_addr;
72
73 union {
74 unsigned long status_addr; /*  read: status  */
75 unsigned long command_addr; /* write: command */
76 };
77
78 unsigned long ctl_addr;
79
80 unsigned long irq_addr;
81 };
82
83 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
84
85 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
89
90 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
91
92 #define SATA_NR_PORTS (3) /* 16 possible ?? */
93
94 #define SATA_STATUS_OFFSET (0)
95 #define SATA_ERROR_OFFSET (1)
96 #define SATA_CONTROL_OFFSET (2)
97
98 /*
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
105 *
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
109 *
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
113 */
114 #define PRD_BYTES 8
115 #define PRD_ENTRIES 256
116
117 /*
118 * Some more useful definitions
119 */
120 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
121 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122 #define SECTOR_SIZE 512
123
124 /*
125 * Timeouts for various operations:
126 */
127 enum {
128 /* spec allows up to 20ms */
129 WAIT_DRQ = HZ / 10, /* 100ms */
130 /* some laptops are very slow */
131 WAIT_READY = 5 * HZ, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE = 30 * HZ, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD = 10 * HZ, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
140 /*
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
144 */
145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
148 };
149
150 /*
151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
153 */
154 #define REQ_DRIVE_RESET 0x20
155 #define REQ_DEVSET_EXEC 0x21
156 #define REQ_PARK_HEADS 0x22
157 #define REQ_UNPARK_HEADS 0x23
158
159 /*
160 * hwif_chipset_t is used to keep track of the specific hardware
161 * chipset used by each IDE interface, if known.
162 */
163 enum { ide_unknown, ide_generic, ide_pci,
164 ide_cmd640, ide_dtc2278, ide_ali14xx,
165 ide_qd65xx, ide_umc8672, ide_ht6560b,
166 ide_4drives, ide_pmac, ide_acorn,
167 ide_au1xxx, ide_palm3710
168 };
169
170 typedef u8 hwif_chipset_t;
171
172 /*
173 * Structure to hold all information about the location of this port
174 */
175 struct ide_hw {
176 union {
177 struct ide_io_ports io_ports;
178 unsigned long io_ports_array[IDE_NR_PORTS];
179 };
180
181 int irq; /* our irq number */
182 struct device *dev, *parent;
183 unsigned long config;
184 };
185
186 static inline void ide_std_init_ports(struct ide_hw *hw,
187 unsigned long io_addr,
188 unsigned long ctl_addr)
189 {
190 unsigned int i;
191
192 for (i = 0; i <= 7; i++)
193 hw->io_ports_array[i] = io_addr++;
194
195 hw->io_ports.ctl_addr = ctl_addr;
196 }
197
198 #define MAX_HWIFS 10
199
200 /*
201 * Now for the data we need to maintain per-drive: ide_drive_t
202 */
203
204 #define ide_scsi 0x21
205 #define ide_disk 0x20
206 #define ide_optical 0x7
207 #define ide_cdrom 0x5
208 #define ide_tape 0x1
209 #define ide_floppy 0x0
210
211 /*
212 * Special Driver Flags
213 */
214 enum {
215 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
216 IDE_SFLAG_RECALIBRATE = (1 << 1),
217 IDE_SFLAG_SET_MULTMODE = (1 << 2),
218 };
219
220 /*
221 * Status returned from various ide_ functions
222 */
223 typedef enum {
224 ide_stopped, /* no drive operation was started */
225 ide_started, /* a drive operation was started, handler was set */
226 } ide_startstop_t;
227
228 enum {
229 IDE_VALID_ERROR = (1 << 1),
230 IDE_VALID_FEATURE = IDE_VALID_ERROR,
231 IDE_VALID_NSECT = (1 << 2),
232 IDE_VALID_LBAL = (1 << 3),
233 IDE_VALID_LBAM = (1 << 4),
234 IDE_VALID_LBAH = (1 << 5),
235 IDE_VALID_DEVICE = (1 << 6),
236 IDE_VALID_LBA = IDE_VALID_LBAL |
237 IDE_VALID_LBAM |
238 IDE_VALID_LBAH,
239 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
240 IDE_VALID_NSECT |
241 IDE_VALID_LBA,
242 IDE_VALID_IN_TF = IDE_VALID_NSECT |
243 IDE_VALID_LBA,
244 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
245 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
246 IDE_VALID_NSECT |
247 IDE_VALID_LBA,
248 };
249
250 enum {
251 IDE_TFLAG_LBA48 = (1 << 0),
252 IDE_TFLAG_WRITE = (1 << 1),
253 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
254 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
255 /* force 16-bit I/O operations */
256 IDE_TFLAG_IO_16BIT = (1 << 4),
257 /* struct ide_cmd was allocated using kmalloc() */
258 IDE_TFLAG_DYN = (1 << 5),
259 IDE_TFLAG_FS = (1 << 6),
260 IDE_TFLAG_MULTI_PIO = (1 << 7),
261 };
262
263 enum {
264 IDE_FTFLAG_FLAGGED = (1 << 0),
265 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
266 IDE_FTFLAG_OUT_DATA = (1 << 2),
267 IDE_FTFLAG_IN_DATA = (1 << 3),
268 };
269
270 struct ide_taskfile {
271 u8 data; /* 0: data byte (for TASKFILE ioctl) */
272 union { /* 1: */
273 u8 error; /* read: error */
274 u8 feature; /* write: feature */
275 };
276 u8 nsect; /* 2: number of sectors */
277 u8 lbal; /* 3: LBA low */
278 u8 lbam; /* 4: LBA mid */
279 u8 lbah; /* 5: LBA high */
280 u8 device; /* 6: device select */
281 union { /* 7: */
282 u8 status; /* read: status */
283 u8 command; /* write: command */
284 };
285 };
286
287 struct ide_cmd {
288 struct ide_taskfile tf;
289 struct ide_taskfile hob;
290 struct {
291 struct {
292 u8 tf;
293 u8 hob;
294 } out, in;
295 } valid;
296
297 u8 tf_flags;
298 u8 ftf_flags; /* for TASKFILE ioctl */
299 int protocol;
300
301 int sg_nents; /* number of sg entries */
302 int orig_sg_nents;
303 int sg_dma_direction; /* DMA transfer direction */
304
305 unsigned int nbytes;
306 unsigned int nleft;
307 unsigned int last_xfer_len;
308
309 struct scatterlist *cursg;
310 unsigned int cursg_ofs;
311
312 struct request *rq; /* copy of request */
313 };
314
315 /* ATAPI packet command flags */
316 enum {
317 /* set when an error is considered normal - no retry (ide-tape) */
318 PC_FLAG_ABORT = (1 << 0),
319 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
320 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
321 PC_FLAG_DMA_OK = (1 << 3),
322 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
323 PC_FLAG_DMA_ERROR = (1 << 5),
324 PC_FLAG_WRITING = (1 << 6),
325 };
326
327 #define ATAPI_WAIT_PC (60 * HZ)
328
329 struct ide_atapi_pc {
330 /* actual packet bytes */
331 u8 c[12];
332 /* incremented on each retry */
333 int retries;
334 int error;
335
336 /* bytes to transfer */
337 int req_xfer;
338
339 /* the corresponding request */
340 struct request *rq;
341
342 unsigned long flags;
343
344 /*
345 * those are more or less driver-specific and some of them are subject
346 * to change/removal later.
347 */
348 unsigned long timeout;
349 };
350
351 struct ide_devset;
352 struct ide_driver;
353
354 #ifdef CONFIG_BLK_DEV_IDEACPI
355 struct ide_acpi_drive_link;
356 struct ide_acpi_hwif_link;
357 #endif
358
359 struct ide_drive_s;
360
361 struct ide_disk_ops {
362 int (*check)(struct ide_drive_s *, const char *);
363 int (*get_capacity)(struct ide_drive_s *);
364 u64 (*set_capacity)(struct ide_drive_s *, u64);
365 void (*setup)(struct ide_drive_s *);
366 void (*flush)(struct ide_drive_s *);
367 int (*init_media)(struct ide_drive_s *, struct gendisk *);
368 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
369 int);
370 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
371 sector_t);
372 int (*ioctl)(struct ide_drive_s *, struct block_device *,
373 fmode_t, unsigned int, unsigned long);
374 };
375
376 /* ATAPI device flags */
377 enum {
378 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
379
380 /* ide-cd */
381 /* Drive cannot eject the disc. */
382 IDE_AFLAG_NO_EJECT = (1 << 1),
383 /* Drive is a pre ATAPI 1.2 drive. */
384 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
385 /* TOC addresses are in BCD. */
386 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
387 /* TOC track numbers are in BCD. */
388 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
389 /* Saved TOC information is current. */
390 IDE_AFLAG_TOC_VALID = (1 << 6),
391 /* We think that the drive door is locked. */
392 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
393 /* SET_CD_SPEED command is unsupported. */
394 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
395 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
396 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
397 IDE_AFLAG_SANYO_3CD = (1 << 11),
398 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
399 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
400 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
401
402 /* ide-floppy */
403 /* Avoid commands not supported in Clik drive */
404 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
405 /* Requires BH algorithm for packets */
406 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
407 /* Supports format progress report */
408 IDE_AFLAG_SRFP = (1 << 17),
409
410 /* ide-tape */
411 IDE_AFLAG_IGNORE_DSC = (1 << 18),
412 /* 0 When the tape position is unknown */
413 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
414 /* Device already opened */
415 IDE_AFLAG_BUSY = (1 << 20),
416 /* Attempt to auto-detect the current user block size */
417 IDE_AFLAG_DETECT_BS = (1 << 21),
418 /* Currently on a filemark */
419 IDE_AFLAG_FILEMARK = (1 << 22),
420 /* 0 = no tape is loaded, so we don't rewind after ejecting */
421 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
422
423 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
424 };
425
426 /* device flags */
427 enum {
428 /* restore settings after device reset */
429 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
430 /* device is using DMA for read/write */
431 IDE_DFLAG_USING_DMA = (1 << 1),
432 /* okay to unmask other IRQs */
433 IDE_DFLAG_UNMASK = (1 << 2),
434 /* don't attempt flushes */
435 IDE_DFLAG_NOFLUSH = (1 << 3),
436 /* DSC overlap */
437 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
438 /* give potential excess bandwidth */
439 IDE_DFLAG_NICE1 = (1 << 5),
440 /* device is physically present */
441 IDE_DFLAG_PRESENT = (1 << 6),
442 /* disable Host Protected Area */
443 IDE_DFLAG_NOHPA = (1 << 7),
444 /* id read from device (synthetic if not set) */
445 IDE_DFLAG_ID_READ = (1 << 8),
446 IDE_DFLAG_NOPROBE = (1 << 9),
447 /* need to do check_media_change() */
448 IDE_DFLAG_REMOVABLE = (1 << 10),
449 /* needed for removable devices */
450 IDE_DFLAG_ATTACH = (1 << 11),
451 IDE_DFLAG_FORCED_GEOM = (1 << 12),
452 /* disallow setting unmask bit */
453 IDE_DFLAG_NO_UNMASK = (1 << 13),
454 /* disallow enabling 32-bit I/O */
455 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
456 /* for removable only: door lock/unlock works */
457 IDE_DFLAG_DOORLOCKING = (1 << 15),
458 /* disallow DMA */
459 IDE_DFLAG_NODMA = (1 << 16),
460 /* powermanagment told us not to do anything, so sleep nicely */
461 IDE_DFLAG_BLOCKED = (1 << 17),
462 /* sleeping & sleep field valid */
463 IDE_DFLAG_SLEEPING = (1 << 18),
464 IDE_DFLAG_POST_RESET = (1 << 19),
465 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
466 IDE_DFLAG_LBA48 = (1 << 21),
467 /* status of write cache */
468 IDE_DFLAG_WCACHE = (1 << 22),
469 /* used for ignoring ATA_DF */
470 IDE_DFLAG_NOWERR = (1 << 23),
471 /* retrying in PIO */
472 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
473 IDE_DFLAG_LBA = (1 << 25),
474 /* don't unload heads */
475 IDE_DFLAG_NO_UNLOAD = (1 << 26),
476 /* heads unloaded, please don't reset port */
477 IDE_DFLAG_PARKED = (1 << 27),
478 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
479 /* write protect */
480 IDE_DFLAG_WP = (1 << 29),
481 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
482 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
483 };
484
485 struct ide_drive_s {
486 char name[4]; /* drive name, such as "hda" */
487 char driver_req[10]; /* requests specific driver */
488
489 struct request_queue *queue; /* request queue */
490
491 struct request *rq; /* current request */
492 void *driver_data; /* extra driver data */
493 u16 *id; /* identification info */
494 #ifdef CONFIG_IDE_PROC_FS
495 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
496 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
497 #endif
498 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
499
500 const struct ide_disk_ops *disk_ops;
501
502 unsigned long dev_flags;
503
504 unsigned long sleep; /* sleep until this time */
505 unsigned long timeout; /* max time to wait for irq */
506
507 u8 special_flags; /* special action flags */
508
509 u8 select; /* basic drive/head select reg value */
510 u8 retry_pio; /* retrying dma capable host in pio */
511 u8 waiting_for_dma; /* dma currently in progress */
512 u8 dma; /* atapi dma flag */
513
514 u8 init_speed; /* transfer rate set at boot */
515 u8 current_speed; /* current transfer rate set */
516 u8 desired_speed; /* desired transfer rate set */
517 u8 dn; /* now wide spread use */
518 u8 acoustic; /* acoustic management */
519 u8 media; /* disk, cdrom, tape, floppy, ... */
520 u8 ready_stat; /* min status value for drive ready */
521 u8 mult_count; /* current multiple sector setting */
522 u8 mult_req; /* requested multiple sector setting */
523 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
524 u8 bad_wstat; /* used for ignoring ATA_DF */
525 u8 head; /* "real" number of heads */
526 u8 sect; /* "real" sectors per track */
527 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
528 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
529
530 /* delay this long before sending packet command */
531 u8 pc_delay;
532
533 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
534 unsigned int cyl; /* "real" number of cyls */
535 void *drive_data; /* used by set_pio_mode/dev_select() */
536 unsigned int failures; /* current failure count */
537 unsigned int max_failures; /* maximum allowed failure count */
538 u64 probed_capacity;/* initial/native media capacity */
539 u64 capacity64; /* total number of sectors */
540
541 int lun; /* logical unit */
542 int crc_count; /* crc counter to reduce drive speed */
543
544 unsigned long debug_mask; /* debugging levels switch */
545
546 #ifdef CONFIG_BLK_DEV_IDEACPI
547 struct ide_acpi_drive_link *acpidata;
548 #endif
549 struct list_head list;
550 struct device gendev;
551 struct completion gendev_rel_comp; /* to deal with device release() */
552
553 /* current packet command */
554 struct ide_atapi_pc *pc;
555
556 /* last failed packet command */
557 struct ide_atapi_pc *failed_pc;
558
559 /* callback for packet commands */
560 int (*pc_callback)(struct ide_drive_s *, int);
561
562 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
563
564 unsigned long atapi_flags;
565
566 struct ide_atapi_pc request_sense_pc;
567
568 /* current sense rq and buffer */
569 bool sense_rq_armed;
570 struct request sense_rq;
571 struct request_sense sense_data;
572 };
573
574 typedef struct ide_drive_s ide_drive_t;
575
576 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
577
578 #define to_ide_drv(obj, cont_type) \
579 container_of(obj, struct cont_type, dev)
580
581 #define ide_drv_g(disk, cont_type) \
582 container_of((disk)->private_data, struct cont_type, driver)
583
584 struct ide_port_info;
585
586 struct ide_tp_ops {
587 void (*exec_command)(struct hwif_s *, u8);
588 u8 (*read_status)(struct hwif_s *);
589 u8 (*read_altstatus)(struct hwif_s *);
590 void (*write_devctl)(struct hwif_s *, u8);
591
592 void (*dev_select)(ide_drive_t *);
593 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
594 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
595
596 void (*input_data)(ide_drive_t *, struct ide_cmd *,
597 void *, unsigned int);
598 void (*output_data)(ide_drive_t *, struct ide_cmd *,
599 void *, unsigned int);
600 };
601
602 extern const struct ide_tp_ops default_tp_ops;
603
604 /**
605 * struct ide_port_ops - IDE port operations
606 *
607 * @init_dev: host specific initialization of a device
608 * @set_pio_mode: routine to program host for PIO mode
609 * @set_dma_mode: routine to program host for DMA mode
610 * @reset_poll: chipset polling based on hba specifics
611 * @pre_reset: chipset specific changes to default for device-hba resets
612 * @resetproc: routine to reset controller after a disk reset
613 * @maskproc: special host masking for drive selection
614 * @quirkproc: check host's drive quirk list
615 * @clear_irq: clear IRQ
616 *
617 * @mdma_filter: filter MDMA modes
618 * @udma_filter: filter UDMA modes
619 *
620 * @cable_detect: detect cable type
621 */
622 struct ide_port_ops {
623 void (*init_dev)(ide_drive_t *);
624 void (*set_pio_mode)(ide_drive_t *, const u8);
625 void (*set_dma_mode)(ide_drive_t *, const u8);
626 int (*reset_poll)(ide_drive_t *);
627 void (*pre_reset)(ide_drive_t *);
628 void (*resetproc)(ide_drive_t *);
629 void (*maskproc)(ide_drive_t *, int);
630 void (*quirkproc)(ide_drive_t *);
631 void (*clear_irq)(ide_drive_t *);
632 int (*test_irq)(struct hwif_s *);
633
634 u8 (*mdma_filter)(ide_drive_t *);
635 u8 (*udma_filter)(ide_drive_t *);
636
637 u8 (*cable_detect)(struct hwif_s *);
638 };
639
640 struct ide_dma_ops {
641 void (*dma_host_set)(struct ide_drive_s *, int);
642 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
643 void (*dma_start)(struct ide_drive_s *);
644 int (*dma_end)(struct ide_drive_s *);
645 int (*dma_test_irq)(struct ide_drive_s *);
646 void (*dma_lost_irq)(struct ide_drive_s *);
647 /* below ones are optional */
648 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
649 int (*dma_timer_expiry)(struct ide_drive_s *);
650 void (*dma_clear)(struct ide_drive_s *);
651 /*
652 * The following method is optional and only required to be
653 * implemented for the SFF-8038i compatible controllers.
654 */
655 u8 (*dma_sff_read_status)(struct hwif_s *);
656 };
657
658 enum {
659 IDE_PFLAG_PROBING = (1 << 0),
660 };
661
662 struct ide_host;
663
664 typedef struct hwif_s {
665 struct hwif_s *mate; /* other hwif from same PCI chip */
666 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
667
668 struct ide_host *host;
669
670 char name[6]; /* name of interface, eg. "ide0" */
671
672 struct ide_io_ports io_ports;
673
674 unsigned long sata_scr[SATA_NR_PORTS];
675
676 ide_drive_t *devices[MAX_DRIVES + 1];
677
678 unsigned long port_flags;
679
680 u8 major; /* our major number */
681 u8 index; /* 0 for ide0; 1 for ide1; ... */
682 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
683
684 u32 host_flags;
685
686 u8 pio_mask;
687
688 u8 ultra_mask;
689 u8 mwdma_mask;
690 u8 swdma_mask;
691
692 u8 cbl; /* cable type */
693
694 hwif_chipset_t chipset; /* sub-module for tuning.. */
695
696 struct device *dev;
697
698 void (*rw_disk)(ide_drive_t *, struct request *);
699
700 const struct ide_tp_ops *tp_ops;
701 const struct ide_port_ops *port_ops;
702 const struct ide_dma_ops *dma_ops;
703
704 /* dma physical region descriptor table (cpu view) */
705 unsigned int *dmatable_cpu;
706 /* dma physical region descriptor table (dma view) */
707 dma_addr_t dmatable_dma;
708
709 /* maximum number of PRD table entries */
710 int prd_max_nents;
711 /* PRD entry size in bytes */
712 int prd_ent_size;
713
714 /* Scatter-gather list used to build the above */
715 struct scatterlist *sg_table;
716 int sg_max_nents; /* Maximum number of entries in it */
717
718 struct ide_cmd cmd; /* current command */
719
720 int rqsize; /* max sectors per request */
721 int irq; /* our irq number */
722
723 unsigned long dma_base; /* base addr for dma ports */
724
725 unsigned long config_data; /* for use by chipset-specific code */
726 unsigned long select_data; /* for use by chipset-specific code */
727
728 unsigned long extra_base; /* extra addr for dma ports */
729 unsigned extra_ports; /* number of extra dma ports */
730
731 unsigned present : 1; /* this interface exists */
732 unsigned busy : 1; /* serializes devices on a port */
733
734 struct device gendev;
735 struct device *portdev;
736
737 struct completion gendev_rel_comp; /* To deal with device release() */
738
739 void *hwif_data; /* extra hwif data */
740
741 #ifdef CONFIG_BLK_DEV_IDEACPI
742 struct ide_acpi_hwif_link *acpidata;
743 #endif
744
745 /* IRQ handler, if active */
746 ide_startstop_t (*handler)(ide_drive_t *);
747
748 /* BOOL: polling active & poll_timeout field valid */
749 unsigned int polling : 1;
750
751 /* current drive */
752 ide_drive_t *cur_dev;
753
754 /* current request */
755 struct request *rq;
756
757 /* failsafe timer */
758 struct timer_list timer;
759 /* timeout value during long polls */
760 unsigned long poll_timeout;
761 /* queried upon timeouts */
762 int (*expiry)(ide_drive_t *);
763
764 int req_gen;
765 int req_gen_timer;
766
767 spinlock_t lock;
768 } ____cacheline_internodealigned_in_smp ide_hwif_t;
769
770 #define MAX_HOST_PORTS 4
771
772 struct ide_host {
773 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
774 unsigned int n_ports;
775 struct device *dev[2];
776
777 int (*init_chipset)(struct pci_dev *);
778
779 void (*get_lock)(irq_handler_t, void *);
780 void (*release_lock)(void);
781
782 irq_handler_t irq_handler;
783
784 unsigned long host_flags;
785
786 int irq_flags;
787
788 void *host_priv;
789 ide_hwif_t *cur_port; /* for hosts requiring serialization */
790
791 /* used for hosts requiring serialization */
792 volatile unsigned long host_busy;
793 };
794
795 #define IDE_HOST_BUSY 0
796
797 /*
798 * internal ide interrupt handler type
799 */
800 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
801 typedef int (ide_expiry_t)(ide_drive_t *);
802
803 /* used by ide-cd, ide-floppy, etc. */
804 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
805
806 extern struct mutex ide_setting_mtx;
807
808 /*
809 * configurable drive settings
810 */
811
812 #define DS_SYNC (1 << 0)
813
814 struct ide_devset {
815 int (*get)(ide_drive_t *);
816 int (*set)(ide_drive_t *, int);
817 unsigned int flags;
818 };
819
820 #define __DEVSET(_flags, _get, _set) { \
821 .flags = _flags, \
822 .get = _get, \
823 .set = _set, \
824 }
825
826 #define ide_devset_get(name, field) \
827 static int get_##name(ide_drive_t *drive) \
828 { \
829 return drive->field; \
830 }
831
832 #define ide_devset_set(name, field) \
833 static int set_##name(ide_drive_t *drive, int arg) \
834 { \
835 drive->field = arg; \
836 return 0; \
837 }
838
839 #define ide_devset_get_flag(name, flag) \
840 static int get_##name(ide_drive_t *drive) \
841 { \
842 return !!(drive->dev_flags & flag); \
843 }
844
845 #define ide_devset_set_flag(name, flag) \
846 static int set_##name(ide_drive_t *drive, int arg) \
847 { \
848 if (arg) \
849 drive->dev_flags |= flag; \
850 else \
851 drive->dev_flags &= ~flag; \
852 return 0; \
853 }
854
855 #define __IDE_DEVSET(_name, _flags, _get, _set) \
856 const struct ide_devset ide_devset_##_name = \
857 __DEVSET(_flags, _get, _set)
858
859 #define IDE_DEVSET(_name, _flags, _get, _set) \
860 static __IDE_DEVSET(_name, _flags, _get, _set)
861
862 #define ide_devset_rw(_name, _func) \
863 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
864
865 #define ide_devset_w(_name, _func) \
866 IDE_DEVSET(_name, 0, NULL, set_##_func)
867
868 #define ide_ext_devset_rw(_name, _func) \
869 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
870
871 #define ide_ext_devset_rw_sync(_name, _func) \
872 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
873
874 #define ide_decl_devset(_name) \
875 extern const struct ide_devset ide_devset_##_name
876
877 ide_decl_devset(io_32bit);
878 ide_decl_devset(keepsettings);
879 ide_decl_devset(pio_mode);
880 ide_decl_devset(unmaskirq);
881 ide_decl_devset(using_dma);
882
883 #ifdef CONFIG_IDE_PROC_FS
884 /*
885 * /proc/ide interface
886 */
887
888 #define ide_devset_rw_field(_name, _field) \
889 ide_devset_get(_name, _field); \
890 ide_devset_set(_name, _field); \
891 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
892
893 #define ide_devset_rw_flag(_name, _field) \
894 ide_devset_get_flag(_name, _field); \
895 ide_devset_set_flag(_name, _field); \
896 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
897
898 struct ide_proc_devset {
899 const char *name;
900 const struct ide_devset *setting;
901 int min, max;
902 int (*mulf)(ide_drive_t *);
903 int (*divf)(ide_drive_t *);
904 };
905
906 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
907 .name = __stringify(_name), \
908 .setting = &ide_devset_##_name, \
909 .min = _min, \
910 .max = _max, \
911 .mulf = _mulf, \
912 .divf = _divf, \
913 }
914
915 #define IDE_PROC_DEVSET(_name, _min, _max) \
916 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
917
918 typedef struct {
919 const char *name;
920 mode_t mode;
921 read_proc_t *read_proc;
922 write_proc_t *write_proc;
923 } ide_proc_entry_t;
924
925 void proc_ide_create(void);
926 void proc_ide_destroy(void);
927 void ide_proc_register_port(ide_hwif_t *);
928 void ide_proc_port_register_devices(ide_hwif_t *);
929 void ide_proc_unregister_device(ide_drive_t *);
930 void ide_proc_unregister_port(ide_hwif_t *);
931 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
932 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
933
934 read_proc_t proc_ide_read_capacity;
935 read_proc_t proc_ide_read_geometry;
936
937 /*
938 * Standard exit stuff:
939 */
940 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
941 { \
942 len -= off; \
943 if (len < count) { \
944 *eof = 1; \
945 if (len <= 0) \
946 return 0; \
947 } else \
948 len = count; \
949 *start = page + off; \
950 return len; \
951 }
952 #else
953 static inline void proc_ide_create(void) { ; }
954 static inline void proc_ide_destroy(void) { ; }
955 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
956 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
957 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
958 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
959 static inline void ide_proc_register_driver(ide_drive_t *drive,
960 struct ide_driver *driver) { ; }
961 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
962 struct ide_driver *driver) { ; }
963 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
964 #endif
965
966 enum {
967 /* enter/exit functions */
968 IDE_DBG_FUNC = (1 << 0),
969 /* sense key/asc handling */
970 IDE_DBG_SENSE = (1 << 1),
971 /* packet commands handling */
972 IDE_DBG_PC = (1 << 2),
973 /* request handling */
974 IDE_DBG_RQ = (1 << 3),
975 /* driver probing/setup */
976 IDE_DBG_PROBE = (1 << 4),
977 };
978
979 /* DRV_NAME has to be defined in the driver before using the macro below */
980 #define __ide_debug_log(lvl, fmt, args...) \
981 { \
982 if (unlikely(drive->debug_mask & lvl)) \
983 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
984 __func__, ## args); \
985 }
986
987 /*
988 * Power Management state machine (rq->pm->pm_step).
989 *
990 * For each step, the core calls ide_start_power_step() first.
991 * This can return:
992 * - ide_stopped : In this case, the core calls us back again unless
993 * step have been set to ide_power_state_completed.
994 * - ide_started : In this case, the channel is left busy until an
995 * async event (interrupt) occurs.
996 * Typically, ide_start_power_step() will issue a taskfile request with
997 * do_rw_taskfile().
998 *
999 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1000 * with the error code if any. This routine should update the step value
1001 * and return. It should not start a new request. The core will call
1002 * ide_start_power_step() for the new step value, unless step have been
1003 * set to IDE_PM_COMPLETED.
1004 */
1005 enum {
1006 IDE_PM_START_SUSPEND,
1007 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1008 IDE_PM_STANDBY,
1009
1010 IDE_PM_START_RESUME,
1011 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1012 IDE_PM_IDLE,
1013 IDE_PM_RESTORE_DMA,
1014
1015 IDE_PM_COMPLETED,
1016 };
1017
1018 int generic_ide_suspend(struct device *, pm_message_t);
1019 int generic_ide_resume(struct device *);
1020
1021 void ide_complete_power_step(ide_drive_t *, struct request *);
1022 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1023 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1024 void ide_check_pm_state(ide_drive_t *, struct request *);
1025
1026 /*
1027 * Subdrivers support.
1028 *
1029 * The gendriver.owner field should be set to the module owner of this driver.
1030 * The gendriver.name field should be set to the name of this driver
1031 */
1032 struct ide_driver {
1033 const char *version;
1034 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1035 struct device_driver gen_driver;
1036 int (*probe)(ide_drive_t *);
1037 void (*remove)(ide_drive_t *);
1038 void (*resume)(ide_drive_t *);
1039 void (*shutdown)(ide_drive_t *);
1040 #ifdef CONFIG_IDE_PROC_FS
1041 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1042 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1043 #endif
1044 };
1045
1046 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1047
1048 int ide_device_get(ide_drive_t *);
1049 void ide_device_put(ide_drive_t *);
1050
1051 struct ide_ioctl_devset {
1052 unsigned int get_ioctl;
1053 unsigned int set_ioctl;
1054 const struct ide_devset *setting;
1055 };
1056
1057 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1058 unsigned long, const struct ide_ioctl_devset *);
1059
1060 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1061
1062 extern int ide_vlb_clk;
1063 extern int ide_pci_clk;
1064
1065 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1066 void ide_kill_rq(ide_drive_t *, struct request *);
1067
1068 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1069 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1070
1071 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1072 unsigned int);
1073
1074 void ide_pad_transfer(ide_drive_t *, int, int);
1075
1076 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1077
1078 void ide_fix_driveid(u16 *);
1079
1080 extern void ide_fixstring(u8 *, const int, const int);
1081
1082 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1083
1084 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1085
1086 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1087 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1088
1089 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1090
1091 extern int ide_devset_execute(ide_drive_t *drive,
1092 const struct ide_devset *setting, int arg);
1093
1094 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1095 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1096
1097 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1098 void ide_tf_dump(const char *, struct ide_cmd *);
1099
1100 void ide_exec_command(ide_hwif_t *, u8);
1101 u8 ide_read_status(ide_hwif_t *);
1102 u8 ide_read_altstatus(ide_hwif_t *);
1103 void ide_write_devctl(ide_hwif_t *, u8);
1104
1105 void ide_dev_select(ide_drive_t *);
1106 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1107 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1108
1109 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1110 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1111
1112 void SELECT_MASK(ide_drive_t *, int);
1113
1114 u8 ide_read_error(ide_drive_t *);
1115 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1116
1117 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1118
1119 int ide_check_atapi_device(ide_drive_t *, const char *);
1120
1121 void ide_init_pc(struct ide_atapi_pc *);
1122
1123 /* Disk head parking */
1124 extern wait_queue_head_t ide_park_wq;
1125 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1126 char *buf);
1127 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1128 const char *buf, size_t len);
1129
1130 /*
1131 * Special requests for ide-tape block device strategy routine.
1132 *
1133 * In order to service a character device command, we add special requests to
1134 * the tail of our block device request queue and wait for their completion.
1135 */
1136 enum {
1137 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1138 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1139 REQ_IDETAPE_READ = (1 << 2),
1140 REQ_IDETAPE_WRITE = (1 << 3),
1141 };
1142
1143 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1144 void *, unsigned int);
1145
1146 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1147 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1148 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1149 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1150 void ide_retry_pc(ide_drive_t *drive);
1151
1152 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1153 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1154
1155 int ide_cd_expiry(ide_drive_t *);
1156
1157 int ide_cd_get_xferlen(struct request *);
1158
1159 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1160
1161 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1162
1163 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1164
1165 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1166
1167 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1168 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1169
1170 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1171
1172 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1173
1174 extern int ide_driveid_update(ide_drive_t *);
1175 extern int ide_config_drive_speed(ide_drive_t *, u8);
1176 extern u8 eighty_ninty_three (ide_drive_t *);
1177 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1178
1179 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1180
1181 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1182
1183 extern void ide_timer_expiry(unsigned long);
1184 extern irqreturn_t ide_intr(int irq, void *dev_id);
1185 extern void do_ide_request(struct request_queue *);
1186
1187 void ide_init_disk(struct gendisk *, ide_drive_t *);
1188
1189 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1190 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1191 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1192 #else
1193 #define ide_pci_register_driver(d) pci_register_driver(d)
1194 #endif
1195
1196 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1197 {
1198 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1199 return 1;
1200 return 0;
1201 }
1202
1203 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1204 struct ide_hw *, struct ide_hw **);
1205 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1206
1207 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1208 int ide_pci_set_master(struct pci_dev *, const char *);
1209 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1210 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1211 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1212 #else
1213 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1214 const struct ide_port_info *d)
1215 {
1216 return -EINVAL;
1217 }
1218 #endif
1219
1220 struct ide_pci_enablebit {
1221 u8 reg; /* byte pci reg holding the enable-bit */
1222 u8 mask; /* mask to isolate the enable-bit */
1223 u8 val; /* value of masked reg when "enabled" */
1224 };
1225
1226 enum {
1227 /* Uses ISA control ports not PCI ones. */
1228 IDE_HFLAG_ISA_PORTS = (1 << 0),
1229 /* single port device */
1230 IDE_HFLAG_SINGLE = (1 << 1),
1231 /* don't use legacy PIO blacklist */
1232 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1233 /* set for the second port of QD65xx */
1234 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1235 /* use PIO8/9 for prefetch off/on */
1236 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1237 /* use PIO6/7 for fast-devsel off/on */
1238 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1239 /* use 100-102 and 200-202 PIO values to set DMA modes */
1240 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1241 /*
1242 * keep DMA setting when programming PIO mode, may be used only
1243 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1244 */
1245 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1246 /* program host for the transfer mode after programming device */
1247 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1248 /* don't program host/device for the transfer mode ("smart" hosts) */
1249 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1250 /* trust BIOS for programming chipset/device for DMA */
1251 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1252 /* host is CS5510/CS5520 */
1253 IDE_HFLAG_CS5520 = (1 << 11),
1254 /* ATAPI DMA is unsupported */
1255 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1256 /* set if host is a "non-bootable" controller */
1257 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1258 /* host doesn't support DMA */
1259 IDE_HFLAG_NO_DMA = (1 << 14),
1260 /* check if host is PCI IDE device before allowing DMA */
1261 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1262 /* host uses MMIO */
1263 IDE_HFLAG_MMIO = (1 << 16),
1264 /* no LBA48 */
1265 IDE_HFLAG_NO_LBA48 = (1 << 17),
1266 /* no LBA48 DMA */
1267 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1268 /* data FIFO is cleared by an error */
1269 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1270 /* serialize ports */
1271 IDE_HFLAG_SERIALIZE = (1 << 20),
1272 /* host is DTC2278 */
1273 IDE_HFLAG_DTC2278 = (1 << 21),
1274 /* 4 devices on a single set of I/O ports */
1275 IDE_HFLAG_4DRIVES = (1 << 22),
1276 /* host is TRM290 */
1277 IDE_HFLAG_TRM290 = (1 << 23),
1278 /* use 32-bit I/O ops */
1279 IDE_HFLAG_IO_32BIT = (1 << 24),
1280 /* unmask IRQs */
1281 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1282 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1283 /* serialize ports if DMA is possible (for sl82c105) */
1284 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1285 /* force host out of "simplex" mode */
1286 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1287 /* DSC overlap is unsupported */
1288 IDE_HFLAG_NO_DSC = (1 << 29),
1289 /* never use 32-bit I/O ops */
1290 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1291 /* never unmask IRQs */
1292 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1293 };
1294
1295 #ifdef CONFIG_BLK_DEV_OFFBOARD
1296 # define IDE_HFLAG_OFF_BOARD 0
1297 #else
1298 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1299 #endif
1300
1301 struct ide_port_info {
1302 char *name;
1303
1304 int (*init_chipset)(struct pci_dev *);
1305
1306 void (*get_lock)(irq_handler_t, void *);
1307 void (*release_lock)(void);
1308
1309 void (*init_iops)(ide_hwif_t *);
1310 void (*init_hwif)(ide_hwif_t *);
1311 int (*init_dma)(ide_hwif_t *,
1312 const struct ide_port_info *);
1313
1314 const struct ide_tp_ops *tp_ops;
1315 const struct ide_port_ops *port_ops;
1316 const struct ide_dma_ops *dma_ops;
1317
1318 struct ide_pci_enablebit enablebits[2];
1319
1320 hwif_chipset_t chipset;
1321
1322 u16 max_sectors; /* if < than the default one */
1323
1324 u32 host_flags;
1325
1326 int irq_flags;
1327
1328 u8 pio_mask;
1329 u8 swdma_mask;
1330 u8 mwdma_mask;
1331 u8 udma_mask;
1332 };
1333
1334 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1335 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1336 const struct ide_port_info *, void *);
1337 void ide_pci_remove(struct pci_dev *);
1338
1339 #ifdef CONFIG_PM
1340 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1341 int ide_pci_resume(struct pci_dev *);
1342 #else
1343 #define ide_pci_suspend NULL
1344 #define ide_pci_resume NULL
1345 #endif
1346
1347 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1348 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1349
1350 #define BAD_DMA_DRIVE 0
1351 #define GOOD_DMA_DRIVE 1
1352
1353 struct drive_list_entry {
1354 const char *id_model;
1355 const char *id_firmware;
1356 };
1357
1358 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1359
1360 #ifdef CONFIG_BLK_DEV_IDEDMA
1361 int ide_dma_good_drive(ide_drive_t *);
1362 int __ide_dma_bad_drive(ide_drive_t *);
1363
1364 u8 ide_find_dma_mode(ide_drive_t *, u8);
1365
1366 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1367 {
1368 return ide_find_dma_mode(drive, XFER_UDMA_6);
1369 }
1370
1371 void ide_dma_off_quietly(ide_drive_t *);
1372 void ide_dma_off(ide_drive_t *);
1373 void ide_dma_on(ide_drive_t *);
1374 int ide_set_dma(ide_drive_t *);
1375 void ide_check_dma_crc(ide_drive_t *);
1376 ide_startstop_t ide_dma_intr(ide_drive_t *);
1377
1378 int ide_allocate_dma_engine(ide_hwif_t *);
1379 void ide_release_dma_engine(ide_hwif_t *);
1380
1381 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1382 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1383
1384 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1385 int config_drive_for_dma(ide_drive_t *);
1386 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1387 void ide_dma_host_set(ide_drive_t *, int);
1388 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1389 extern void ide_dma_start(ide_drive_t *);
1390 int ide_dma_end(ide_drive_t *);
1391 int ide_dma_test_irq(ide_drive_t *);
1392 int ide_dma_sff_timer_expiry(ide_drive_t *);
1393 u8 ide_dma_sff_read_status(ide_hwif_t *);
1394 extern const struct ide_dma_ops sff_dma_ops;
1395 #else
1396 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1397 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1398
1399 void ide_dma_lost_irq(ide_drive_t *);
1400 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1401
1402 #else
1403 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1404 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1405 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1406 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1407 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1408 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1409 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1410 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1411 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1412 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1413 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1414 static inline int ide_dma_prepare(ide_drive_t *drive,
1415 struct ide_cmd *cmd) { return 1; }
1416 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1417 struct ide_cmd *cmd) { ; }
1418 #endif /* CONFIG_BLK_DEV_IDEDMA */
1419
1420 #ifdef CONFIG_BLK_DEV_IDEACPI
1421 int ide_acpi_init(void);
1422 bool ide_port_acpi(ide_hwif_t *hwif);
1423 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1424 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1425 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1426 void ide_acpi_init_port(ide_hwif_t *);
1427 void ide_acpi_port_init_devices(ide_hwif_t *);
1428 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1429 #else
1430 static inline int ide_acpi_init(void) { return 0; }
1431 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1432 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1433 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1434 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1435 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1436 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1437 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1438 #endif
1439
1440 void ide_register_region(struct gendisk *);
1441 void ide_unregister_region(struct gendisk *);
1442
1443 void ide_check_nien_quirk_list(ide_drive_t *);
1444 void ide_undecoded_slave(ide_drive_t *);
1445
1446 void ide_port_apply_params(ide_hwif_t *);
1447 int ide_sysfs_register_port(ide_hwif_t *);
1448
1449 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1450 unsigned int);
1451 void ide_host_free(struct ide_host *);
1452 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1453 struct ide_hw **);
1454 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1455 struct ide_host **);
1456 void ide_host_remove(struct ide_host *);
1457 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1458 void ide_port_unregister_devices(ide_hwif_t *);
1459 void ide_port_scan(ide_hwif_t *);
1460
1461 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1462 {
1463 return hwif->hwif_data;
1464 }
1465
1466 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1467 {
1468 hwif->hwif_data = data;
1469 }
1470
1471 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1472
1473 u64 ide_get_lba_addr(struct ide_cmd *, int);
1474 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1475
1476 struct ide_timing {
1477 u8 mode;
1478 u8 setup; /* t1 */
1479 u16 act8b; /* t2 for 8-bit io */
1480 u16 rec8b; /* t2i for 8-bit io */
1481 u16 cyc8b; /* t0 for 8-bit io */
1482 u16 active; /* t2 or tD */
1483 u16 recover; /* t2i or tK */
1484 u16 cycle; /* t0 */
1485 u16 udma; /* t2CYCTYP/2 */
1486 };
1487
1488 enum {
1489 IDE_TIMING_SETUP = (1 << 0),
1490 IDE_TIMING_ACT8B = (1 << 1),
1491 IDE_TIMING_REC8B = (1 << 2),
1492 IDE_TIMING_CYC8B = (1 << 3),
1493 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1494 IDE_TIMING_CYC8B,
1495 IDE_TIMING_ACTIVE = (1 << 4),
1496 IDE_TIMING_RECOVER = (1 << 5),
1497 IDE_TIMING_CYCLE = (1 << 6),
1498 IDE_TIMING_UDMA = (1 << 7),
1499 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1500 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1501 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1502 };
1503
1504 struct ide_timing *ide_timing_find_mode(u8);
1505 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1506 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1507 struct ide_timing *, unsigned int);
1508 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1509
1510 #ifdef CONFIG_IDE_XFER_MODE
1511 int ide_scan_pio_blacklist(char *);
1512 const char *ide_xfer_verbose(u8);
1513 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1514 int ide_pio_need_iordy(ide_drive_t *, const u8);
1515 int ide_set_pio_mode(ide_drive_t *, u8);
1516 int ide_set_dma_mode(ide_drive_t *, u8);
1517 void ide_set_pio(ide_drive_t *, u8);
1518 int ide_set_xfer_rate(ide_drive_t *, u8);
1519 #else
1520 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1521 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1522 #endif
1523
1524 static inline void ide_set_max_pio(ide_drive_t *drive)
1525 {
1526 ide_set_pio(drive, 255);
1527 }
1528
1529 char *ide_media_string(ide_drive_t *);
1530
1531 extern struct device_attribute ide_dev_attrs[];
1532 extern struct bus_type ide_bus_type;
1533 extern struct class *ide_port_class;
1534
1535 static inline void ide_dump_identify(u8 *id)
1536 {
1537 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1538 }
1539
1540 static inline int hwif_to_node(ide_hwif_t *hwif)
1541 {
1542 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1543 }
1544
1545 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1546 {
1547 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1548
1549 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1550 }
1551
1552 static inline void *ide_get_drivedata(ide_drive_t *drive)
1553 {
1554 return drive->drive_data;
1555 }
1556
1557 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1558 {
1559 drive->drive_data = data;
1560 }
1561
1562 #define ide_port_for_each_dev(i, dev, port) \
1563 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1564
1565 #define ide_port_for_each_present_dev(i, dev, port) \
1566 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1567 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1568
1569 #define ide_host_for_each_port(i, port, host) \
1570 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1571
1572 #endif /* _IDE_H */
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