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Linux 4.6-rc6
[cris-mirror.git] / include / linux / ide.h
bloba633898f36ac83f387f6de86350f7768a3d73b6e
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/pci.h>
18 #include <linux/completion.h>
19 #include <linux/pm.h>
20 #include <linux/mutex.h>
21 /* for request_sense */
22 #include <linux/cdrom.h>
23 #include <asm/byteorder.h>
24 #include <asm/io.h>
25
26 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
27 # define SUPPORT_VLB_SYNC 0
28 #else
29 # define SUPPORT_VLB_SYNC 1
30 #endif
31
32 /*
33 * Probably not wise to fiddle with these
34 */
35 #define IDE_DEFAULT_MAX_FAILURES 1
36 #define ERROR_MAX 8 /* Max read/write errors per sector */
37 #define ERROR_RESET 3 /* Reset controller every 4th retry */
38 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
39
40 struct device;
41
42 /* IDE-specific values for req->cmd_type */
43 enum ata_cmd_type_bits {
44 REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1,
45 REQ_TYPE_ATA_PC,
46 REQ_TYPE_ATA_SENSE, /* sense request */
47 REQ_TYPE_ATA_PM_SUSPEND,/* suspend request */
48 REQ_TYPE_ATA_PM_RESUME, /* resume request */
49 };
50
51 #define ata_pm_request(rq) \
52 ((rq)->cmd_type == REQ_TYPE_ATA_PM_SUSPEND || \
53 (rq)->cmd_type == REQ_TYPE_ATA_PM_RESUME)
54
55 /* Error codes returned in rq->errors to the higher part of the driver. */
56 enum {
57 IDE_DRV_ERROR_GENERAL = 101,
58 IDE_DRV_ERROR_FILEMARK = 102,
59 IDE_DRV_ERROR_EOD = 103,
60 };
61
62 /*
63 * Definitions for accessing IDE controller registers
64 */
65 #define IDE_NR_PORTS (10)
66
67 struct ide_io_ports {
68 unsigned long data_addr;
69
70 union {
71 unsigned long error_addr; /* read: error */
72 unsigned long feature_addr; /* write: feature */
73 };
74
75 unsigned long nsect_addr;
76 unsigned long lbal_addr;
77 unsigned long lbam_addr;
78 unsigned long lbah_addr;
79
80 unsigned long device_addr;
81
82 union {
83 unsigned long status_addr; /*  read: status  */
84 unsigned long command_addr; /* write: command */
85 };
86
87 unsigned long ctl_addr;
88
89 unsigned long irq_addr;
90 };
91
92 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
93
94 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
95 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
96 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
97 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
98
99 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
100
101 #define SATA_NR_PORTS (3) /* 16 possible ?? */
102
103 #define SATA_STATUS_OFFSET (0)
104 #define SATA_ERROR_OFFSET (1)
105 #define SATA_CONTROL_OFFSET (2)
106
107 /*
108 * Our Physical Region Descriptor (PRD) table should be large enough
109 * to handle the biggest I/O request we are likely to see. Since requests
110 * can have no more than 256 sectors, and since the typical blocksize is
111 * two or more sectors, we could get by with a limit of 128 entries here for
112 * the usual worst case. Most requests seem to include some contiguous blocks,
113 * further reducing the number of table entries required.
114 *
115 * The driver reverts to PIO mode for individual requests that exceed
116 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
117 * 100% of all crazy scenarios here is not necessary.
118 *
119 * As it turns out though, we must allocate a full 4KB page for this,
120 * so the two PRD tables (ide0 & ide1) will each get half of that,
121 * allowing each to have about 256 entries (8 bytes each) from this.
122 */
123 #define PRD_BYTES 8
124 #define PRD_ENTRIES 256
125
126 /*
127 * Some more useful definitions
128 */
129 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
130 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
131 #define SECTOR_SIZE 512
132
133 /*
134 * Timeouts for various operations:
135 */
136 enum {
137 /* spec allows up to 20ms, but CF cards and SSD drives need more */
138 WAIT_DRQ = 1 * HZ, /* 1s */
139 /* some laptops are very slow */
140 WAIT_READY = 5 * HZ, /* 5s */
141 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
142 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
143 /* worst case when spinning up */
144 WAIT_WORSTCASE = 30 * HZ, /* 30s */
145 /* maximum wait for an IRQ to happen */
146 WAIT_CMD = 10 * HZ, /* 10s */
147 /* Some drives require a longer IRQ timeout. */
148 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
149 /*
150 * Some drives (for example, Seagate STT3401A Travan) require a very
151 * long timeout, because they don't return an interrupt or clear their
152 * BSY bit until after the command completes (even retension commands).
153 */
154 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
155 /* minimum sleep time */
156 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
157 };
158
159 /*
160 * Op codes for special requests to be handled by ide_special_rq().
161 * Values should be in the range of 0x20 to 0x3f.
162 */
163 #define REQ_DRIVE_RESET 0x20
164 #define REQ_DEVSET_EXEC 0x21
165 #define REQ_PARK_HEADS 0x22
166 #define REQ_UNPARK_HEADS 0x23
167
168 /*
169 * hwif_chipset_t is used to keep track of the specific hardware
170 * chipset used by each IDE interface, if known.
171 */
172 enum { ide_unknown, ide_generic, ide_pci,
173 ide_cmd640, ide_dtc2278, ide_ali14xx,
174 ide_qd65xx, ide_umc8672, ide_ht6560b,
175 ide_4drives, ide_pmac, ide_acorn,
176 ide_au1xxx, ide_palm3710
177 };
178
179 typedef u8 hwif_chipset_t;
180
181 /*
182 * Structure to hold all information about the location of this port
183 */
184 struct ide_hw {
185 union {
186 struct ide_io_ports io_ports;
187 unsigned long io_ports_array[IDE_NR_PORTS];
188 };
189
190 int irq; /* our irq number */
191 struct device *dev, *parent;
192 unsigned long config;
193 };
194
195 static inline void ide_std_init_ports(struct ide_hw *hw,
196 unsigned long io_addr,
197 unsigned long ctl_addr)
198 {
199 unsigned int i;
200
201 for (i = 0; i <= 7; i++)
202 hw->io_ports_array[i] = io_addr++;
203
204 hw->io_ports.ctl_addr = ctl_addr;
205 }
206
207 #define MAX_HWIFS 10
208
209 /*
210 * Now for the data we need to maintain per-drive: ide_drive_t
211 */
212
213 #define ide_scsi 0x21
214 #define ide_disk 0x20
215 #define ide_optical 0x7
216 #define ide_cdrom 0x5
217 #define ide_tape 0x1
218 #define ide_floppy 0x0
219
220 /*
221 * Special Driver Flags
222 */
223 enum {
224 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
225 IDE_SFLAG_RECALIBRATE = (1 << 1),
226 IDE_SFLAG_SET_MULTMODE = (1 << 2),
227 };
228
229 /*
230 * Status returned from various ide_ functions
231 */
232 typedef enum {
233 ide_stopped, /* no drive operation was started */
234 ide_started, /* a drive operation was started, handler was set */
235 } ide_startstop_t;
236
237 enum {
238 IDE_VALID_ERROR = (1 << 1),
239 IDE_VALID_FEATURE = IDE_VALID_ERROR,
240 IDE_VALID_NSECT = (1 << 2),
241 IDE_VALID_LBAL = (1 << 3),
242 IDE_VALID_LBAM = (1 << 4),
243 IDE_VALID_LBAH = (1 << 5),
244 IDE_VALID_DEVICE = (1 << 6),
245 IDE_VALID_LBA = IDE_VALID_LBAL |
246 IDE_VALID_LBAM |
247 IDE_VALID_LBAH,
248 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
249 IDE_VALID_NSECT |
250 IDE_VALID_LBA,
251 IDE_VALID_IN_TF = IDE_VALID_NSECT |
252 IDE_VALID_LBA,
253 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
254 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
255 IDE_VALID_NSECT |
256 IDE_VALID_LBA,
257 };
258
259 enum {
260 IDE_TFLAG_LBA48 = (1 << 0),
261 IDE_TFLAG_WRITE = (1 << 1),
262 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
263 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
264 /* force 16-bit I/O operations */
265 IDE_TFLAG_IO_16BIT = (1 << 4),
266 /* struct ide_cmd was allocated using kmalloc() */
267 IDE_TFLAG_DYN = (1 << 5),
268 IDE_TFLAG_FS = (1 << 6),
269 IDE_TFLAG_MULTI_PIO = (1 << 7),
270 IDE_TFLAG_SET_XFER = (1 << 8),
271 };
272
273 enum {
274 IDE_FTFLAG_FLAGGED = (1 << 0),
275 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
276 IDE_FTFLAG_OUT_DATA = (1 << 2),
277 IDE_FTFLAG_IN_DATA = (1 << 3),
278 };
279
280 struct ide_taskfile {
281 u8 data; /* 0: data byte (for TASKFILE ioctl) */
282 union { /* 1: */
283 u8 error; /* read: error */
284 u8 feature; /* write: feature */
285 };
286 u8 nsect; /* 2: number of sectors */
287 u8 lbal; /* 3: LBA low */
288 u8 lbam; /* 4: LBA mid */
289 u8 lbah; /* 5: LBA high */
290 u8 device; /* 6: device select */
291 union { /* 7: */
292 u8 status; /* read: status */
293 u8 command; /* write: command */
294 };
295 };
296
297 struct ide_cmd {
298 struct ide_taskfile tf;
299 struct ide_taskfile hob;
300 struct {
301 struct {
302 u8 tf;
303 u8 hob;
304 } out, in;
305 } valid;
306
307 u16 tf_flags;
308 u8 ftf_flags; /* for TASKFILE ioctl */
309 int protocol;
310
311 int sg_nents; /* number of sg entries */
312 int orig_sg_nents;
313 int sg_dma_direction; /* DMA transfer direction */
314
315 unsigned int nbytes;
316 unsigned int nleft;
317 unsigned int last_xfer_len;
318
319 struct scatterlist *cursg;
320 unsigned int cursg_ofs;
321
322 struct request *rq; /* copy of request */
323 };
324
325 /* ATAPI packet command flags */
326 enum {
327 /* set when an error is considered normal - no retry (ide-tape) */
328 PC_FLAG_ABORT = (1 << 0),
329 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
330 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
331 PC_FLAG_DMA_OK = (1 << 3),
332 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
333 PC_FLAG_DMA_ERROR = (1 << 5),
334 PC_FLAG_WRITING = (1 << 6),
335 };
336
337 #define ATAPI_WAIT_PC (60 * HZ)
338
339 struct ide_atapi_pc {
340 /* actual packet bytes */
341 u8 c[12];
342 /* incremented on each retry */
343 int retries;
344 int error;
345
346 /* bytes to transfer */
347 int req_xfer;
348
349 /* the corresponding request */
350 struct request *rq;
351
352 unsigned long flags;
353
354 /*
355 * those are more or less driver-specific and some of them are subject
356 * to change/removal later.
357 */
358 unsigned long timeout;
359 };
360
361 struct ide_devset;
362 struct ide_driver;
363
364 #ifdef CONFIG_BLK_DEV_IDEACPI
365 struct ide_acpi_drive_link;
366 struct ide_acpi_hwif_link;
367 #endif
368
369 struct ide_drive_s;
370
371 struct ide_disk_ops {
372 int (*check)(struct ide_drive_s *, const char *);
373 int (*get_capacity)(struct ide_drive_s *);
374 void (*unlock_native_capacity)(struct ide_drive_s *);
375 void (*setup)(struct ide_drive_s *);
376 void (*flush)(struct ide_drive_s *);
377 int (*init_media)(struct ide_drive_s *, struct gendisk *);
378 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
379 int);
380 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
381 sector_t);
382 int (*ioctl)(struct ide_drive_s *, struct block_device *,
383 fmode_t, unsigned int, unsigned long);
384 };
385
386 /* ATAPI device flags */
387 enum {
388 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
389
390 /* ide-cd */
391 /* Drive cannot eject the disc. */
392 IDE_AFLAG_NO_EJECT = (1 << 1),
393 /* Drive is a pre ATAPI 1.2 drive. */
394 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
395 /* TOC addresses are in BCD. */
396 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
397 /* TOC track numbers are in BCD. */
398 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
399 /* Saved TOC information is current. */
400 IDE_AFLAG_TOC_VALID = (1 << 6),
401 /* We think that the drive door is locked. */
402 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
403 /* SET_CD_SPEED command is unsupported. */
404 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
405 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
406 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
407 IDE_AFLAG_SANYO_3CD = (1 << 11),
408 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
409 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
410 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
411
412 /* ide-floppy */
413 /* Avoid commands not supported in Clik drive */
414 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
415 /* Requires BH algorithm for packets */
416 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
417 /* Supports format progress report */
418 IDE_AFLAG_SRFP = (1 << 17),
419
420 /* ide-tape */
421 IDE_AFLAG_IGNORE_DSC = (1 << 18),
422 /* 0 When the tape position is unknown */
423 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
424 /* Device already opened */
425 IDE_AFLAG_BUSY = (1 << 20),
426 /* Attempt to auto-detect the current user block size */
427 IDE_AFLAG_DETECT_BS = (1 << 21),
428 /* Currently on a filemark */
429 IDE_AFLAG_FILEMARK = (1 << 22),
430 /* 0 = no tape is loaded, so we don't rewind after ejecting */
431 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
432
433 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
434 };
435
436 /* device flags */
437 enum {
438 /* restore settings after device reset */
439 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
440 /* device is using DMA for read/write */
441 IDE_DFLAG_USING_DMA = (1 << 1),
442 /* okay to unmask other IRQs */
443 IDE_DFLAG_UNMASK = (1 << 2),
444 /* don't attempt flushes */
445 IDE_DFLAG_NOFLUSH = (1 << 3),
446 /* DSC overlap */
447 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
448 /* give potential excess bandwidth */
449 IDE_DFLAG_NICE1 = (1 << 5),
450 /* device is physically present */
451 IDE_DFLAG_PRESENT = (1 << 6),
452 /* disable Host Protected Area */
453 IDE_DFLAG_NOHPA = (1 << 7),
454 /* id read from device (synthetic if not set) */
455 IDE_DFLAG_ID_READ = (1 << 8),
456 IDE_DFLAG_NOPROBE = (1 << 9),
457 /* need to do check_media_change() */
458 IDE_DFLAG_REMOVABLE = (1 << 10),
459 /* needed for removable devices */
460 IDE_DFLAG_ATTACH = (1 << 11),
461 IDE_DFLAG_FORCED_GEOM = (1 << 12),
462 /* disallow setting unmask bit */
463 IDE_DFLAG_NO_UNMASK = (1 << 13),
464 /* disallow enabling 32-bit I/O */
465 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
466 /* for removable only: door lock/unlock works */
467 IDE_DFLAG_DOORLOCKING = (1 << 15),
468 /* disallow DMA */
469 IDE_DFLAG_NODMA = (1 << 16),
470 /* powermanagement told us not to do anything, so sleep nicely */
471 IDE_DFLAG_BLOCKED = (1 << 17),
472 /* sleeping & sleep field valid */
473 IDE_DFLAG_SLEEPING = (1 << 18),
474 IDE_DFLAG_POST_RESET = (1 << 19),
475 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
476 IDE_DFLAG_LBA48 = (1 << 21),
477 /* status of write cache */
478 IDE_DFLAG_WCACHE = (1 << 22),
479 /* used for ignoring ATA_DF */
480 IDE_DFLAG_NOWERR = (1 << 23),
481 /* retrying in PIO */
482 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
483 IDE_DFLAG_LBA = (1 << 25),
484 /* don't unload heads */
485 IDE_DFLAG_NO_UNLOAD = (1 << 26),
486 /* heads unloaded, please don't reset port */
487 IDE_DFLAG_PARKED = (1 << 27),
488 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
489 /* write protect */
490 IDE_DFLAG_WP = (1 << 29),
491 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
492 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
493 };
494
495 struct ide_drive_s {
496 char name[4]; /* drive name, such as "hda" */
497 char driver_req[10]; /* requests specific driver */
498
499 struct request_queue *queue; /* request queue */
500
501 struct request *rq; /* current request */
502 void *driver_data; /* extra driver data */
503 u16 *id; /* identification info */
504 #ifdef CONFIG_IDE_PROC_FS
505 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
506 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
507 #endif
508 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
509
510 const struct ide_disk_ops *disk_ops;
511
512 unsigned long dev_flags;
513
514 unsigned long sleep; /* sleep until this time */
515 unsigned long timeout; /* max time to wait for irq */
516
517 u8 special_flags; /* special action flags */
518
519 u8 select; /* basic drive/head select reg value */
520 u8 retry_pio; /* retrying dma capable host in pio */
521 u8 waiting_for_dma; /* dma currently in progress */
522 u8 dma; /* atapi dma flag */
523
524 u8 init_speed; /* transfer rate set at boot */
525 u8 current_speed; /* current transfer rate set */
526 u8 desired_speed; /* desired transfer rate set */
527 u8 pio_mode; /* for ->set_pio_mode _only_ */
528 u8 dma_mode; /* for ->set_dma_mode _only_ */
529 u8 dn; /* now wide spread use */
530 u8 acoustic; /* acoustic management */
531 u8 media; /* disk, cdrom, tape, floppy, ... */
532 u8 ready_stat; /* min status value for drive ready */
533 u8 mult_count; /* current multiple sector setting */
534 u8 mult_req; /* requested multiple sector setting */
535 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
536 u8 bad_wstat; /* used for ignoring ATA_DF */
537 u8 head; /* "real" number of heads */
538 u8 sect; /* "real" sectors per track */
539 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
540 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
541
542 /* delay this long before sending packet command */
543 u8 pc_delay;
544
545 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
546 unsigned int cyl; /* "real" number of cyls */
547 void *drive_data; /* used by set_pio_mode/dev_select() */
548 unsigned int failures; /* current failure count */
549 unsigned int max_failures; /* maximum allowed failure count */
550 u64 probed_capacity;/* initial/native media capacity */
551 u64 capacity64; /* total number of sectors */
552
553 int lun; /* logical unit */
554 int crc_count; /* crc counter to reduce drive speed */
555
556 unsigned long debug_mask; /* debugging levels switch */
557
558 #ifdef CONFIG_BLK_DEV_IDEACPI
559 struct ide_acpi_drive_link *acpidata;
560 #endif
561 struct list_head list;
562 struct device gendev;
563 struct completion gendev_rel_comp; /* to deal with device release() */
564
565 /* current packet command */
566 struct ide_atapi_pc *pc;
567
568 /* last failed packet command */
569 struct ide_atapi_pc *failed_pc;
570
571 /* callback for packet commands */
572 int (*pc_callback)(struct ide_drive_s *, int);
573
574 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
575
576 unsigned long atapi_flags;
577
578 struct ide_atapi_pc request_sense_pc;
579
580 /* current sense rq and buffer */
581 bool sense_rq_armed;
582 struct request sense_rq;
583 struct request_sense sense_data;
584 };
585
586 typedef struct ide_drive_s ide_drive_t;
587
588 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
589
590 #define to_ide_drv(obj, cont_type) \
591 container_of(obj, struct cont_type, dev)
592
593 #define ide_drv_g(disk, cont_type) \
594 container_of((disk)->private_data, struct cont_type, driver)
595
596 struct ide_port_info;
597
598 struct ide_tp_ops {
599 void (*exec_command)(struct hwif_s *, u8);
600 u8 (*read_status)(struct hwif_s *);
601 u8 (*read_altstatus)(struct hwif_s *);
602 void (*write_devctl)(struct hwif_s *, u8);
603
604 void (*dev_select)(ide_drive_t *);
605 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
606 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
607
608 void (*input_data)(ide_drive_t *, struct ide_cmd *,
609 void *, unsigned int);
610 void (*output_data)(ide_drive_t *, struct ide_cmd *,
611 void *, unsigned int);
612 };
613
614 extern const struct ide_tp_ops default_tp_ops;
615
616 /**
617 * struct ide_port_ops - IDE port operations
618 *
619 * @init_dev: host specific initialization of a device
620 * @set_pio_mode: routine to program host for PIO mode
621 * @set_dma_mode: routine to program host for DMA mode
622 * @reset_poll: chipset polling based on hba specifics
623 * @pre_reset: chipset specific changes to default for device-hba resets
624 * @resetproc: routine to reset controller after a disk reset
625 * @maskproc: special host masking for drive selection
626 * @quirkproc: check host's drive quirk list
627 * @clear_irq: clear IRQ
628 *
629 * @mdma_filter: filter MDMA modes
630 * @udma_filter: filter UDMA modes
631 *
632 * @cable_detect: detect cable type
633 */
634 struct ide_port_ops {
635 void (*init_dev)(ide_drive_t *);
636 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
637 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
638 int (*reset_poll)(ide_drive_t *);
639 void (*pre_reset)(ide_drive_t *);
640 void (*resetproc)(ide_drive_t *);
641 void (*maskproc)(ide_drive_t *, int);
642 void (*quirkproc)(ide_drive_t *);
643 void (*clear_irq)(ide_drive_t *);
644 int (*test_irq)(struct hwif_s *);
645
646 u8 (*mdma_filter)(ide_drive_t *);
647 u8 (*udma_filter)(ide_drive_t *);
648
649 u8 (*cable_detect)(struct hwif_s *);
650 };
651
652 struct ide_dma_ops {
653 void (*dma_host_set)(struct ide_drive_s *, int);
654 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
655 void (*dma_start)(struct ide_drive_s *);
656 int (*dma_end)(struct ide_drive_s *);
657 int (*dma_test_irq)(struct ide_drive_s *);
658 void (*dma_lost_irq)(struct ide_drive_s *);
659 /* below ones are optional */
660 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
661 int (*dma_timer_expiry)(struct ide_drive_s *);
662 void (*dma_clear)(struct ide_drive_s *);
663 /*
664 * The following method is optional and only required to be
665 * implemented for the SFF-8038i compatible controllers.
666 */
667 u8 (*dma_sff_read_status)(struct hwif_s *);
668 };
669
670 enum {
671 IDE_PFLAG_PROBING = (1 << 0),
672 };
673
674 struct ide_host;
675
676 typedef struct hwif_s {
677 struct hwif_s *mate; /* other hwif from same PCI chip */
678 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
679
680 struct ide_host *host;
681
682 char name[6]; /* name of interface, eg. "ide0" */
683
684 struct ide_io_ports io_ports;
685
686 unsigned long sata_scr[SATA_NR_PORTS];
687
688 ide_drive_t *devices[MAX_DRIVES + 1];
689
690 unsigned long port_flags;
691
692 u8 major; /* our major number */
693 u8 index; /* 0 for ide0; 1 for ide1; ... */
694 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
695
696 u32 host_flags;
697
698 u8 pio_mask;
699
700 u8 ultra_mask;
701 u8 mwdma_mask;
702 u8 swdma_mask;
703
704 u8 cbl; /* cable type */
705
706 hwif_chipset_t chipset; /* sub-module for tuning.. */
707
708 struct device *dev;
709
710 void (*rw_disk)(ide_drive_t *, struct request *);
711
712 const struct ide_tp_ops *tp_ops;
713 const struct ide_port_ops *port_ops;
714 const struct ide_dma_ops *dma_ops;
715
716 /* dma physical region descriptor table (cpu view) */
717 unsigned int *dmatable_cpu;
718 /* dma physical region descriptor table (dma view) */
719 dma_addr_t dmatable_dma;
720
721 /* maximum number of PRD table entries */
722 int prd_max_nents;
723 /* PRD entry size in bytes */
724 int prd_ent_size;
725
726 /* Scatter-gather list used to build the above */
727 struct scatterlist *sg_table;
728 int sg_max_nents; /* Maximum number of entries in it */
729
730 struct ide_cmd cmd; /* current command */
731
732 int rqsize; /* max sectors per request */
733 int irq; /* our irq number */
734
735 unsigned long dma_base; /* base addr for dma ports */
736
737 unsigned long config_data; /* for use by chipset-specific code */
738 unsigned long select_data; /* for use by chipset-specific code */
739
740 unsigned long extra_base; /* extra addr for dma ports */
741 unsigned extra_ports; /* number of extra dma ports */
742
743 unsigned present : 1; /* this interface exists */
744 unsigned busy : 1; /* serializes devices on a port */
745
746 struct device gendev;
747 struct device *portdev;
748
749 struct completion gendev_rel_comp; /* To deal with device release() */
750
751 void *hwif_data; /* extra hwif data */
752
753 #ifdef CONFIG_BLK_DEV_IDEACPI
754 struct ide_acpi_hwif_link *acpidata;
755 #endif
756
757 /* IRQ handler, if active */
758 ide_startstop_t (*handler)(ide_drive_t *);
759
760 /* BOOL: polling active & poll_timeout field valid */
761 unsigned int polling : 1;
762
763 /* current drive */
764 ide_drive_t *cur_dev;
765
766 /* current request */
767 struct request *rq;
768
769 /* failsafe timer */
770 struct timer_list timer;
771 /* timeout value during long polls */
772 unsigned long poll_timeout;
773 /* queried upon timeouts */
774 int (*expiry)(ide_drive_t *);
775
776 int req_gen;
777 int req_gen_timer;
778
779 spinlock_t lock;
780 } ____cacheline_internodealigned_in_smp ide_hwif_t;
781
782 #define MAX_HOST_PORTS 4
783
784 struct ide_host {
785 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
786 unsigned int n_ports;
787 struct device *dev[2];
788
789 int (*init_chipset)(struct pci_dev *);
790
791 void (*get_lock)(irq_handler_t, void *);
792 void (*release_lock)(void);
793
794 irq_handler_t irq_handler;
795
796 unsigned long host_flags;
797
798 int irq_flags;
799
800 void *host_priv;
801 ide_hwif_t *cur_port; /* for hosts requiring serialization */
802
803 /* used for hosts requiring serialization */
804 volatile unsigned long host_busy;
805 };
806
807 #define IDE_HOST_BUSY 0
808
809 /*
810 * internal ide interrupt handler type
811 */
812 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
813 typedef int (ide_expiry_t)(ide_drive_t *);
814
815 /* used by ide-cd, ide-floppy, etc. */
816 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
817
818 extern struct mutex ide_setting_mtx;
819
820 /*
821 * configurable drive settings
822 */
823
824 #define DS_SYNC (1 << 0)
825
826 struct ide_devset {
827 int (*get)(ide_drive_t *);
828 int (*set)(ide_drive_t *, int);
829 unsigned int flags;
830 };
831
832 #define __DEVSET(_flags, _get, _set) { \
833 .flags = _flags, \
834 .get = _get, \
835 .set = _set, \
836 }
837
838 #define ide_devset_get(name, field) \
839 static int get_##name(ide_drive_t *drive) \
840 { \
841 return drive->field; \
842 }
843
844 #define ide_devset_set(name, field) \
845 static int set_##name(ide_drive_t *drive, int arg) \
846 { \
847 drive->field = arg; \
848 return 0; \
849 }
850
851 #define ide_devset_get_flag(name, flag) \
852 static int get_##name(ide_drive_t *drive) \
853 { \
854 return !!(drive->dev_flags & flag); \
855 }
856
857 #define ide_devset_set_flag(name, flag) \
858 static int set_##name(ide_drive_t *drive, int arg) \
859 { \
860 if (arg) \
861 drive->dev_flags |= flag; \
862 else \
863 drive->dev_flags &= ~flag; \
864 return 0; \
865 }
866
867 #define __IDE_DEVSET(_name, _flags, _get, _set) \
868 const struct ide_devset ide_devset_##_name = \
869 __DEVSET(_flags, _get, _set)
870
871 #define IDE_DEVSET(_name, _flags, _get, _set) \
872 static __IDE_DEVSET(_name, _flags, _get, _set)
873
874 #define ide_devset_rw(_name, _func) \
875 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
876
877 #define ide_devset_w(_name, _func) \
878 IDE_DEVSET(_name, 0, NULL, set_##_func)
879
880 #define ide_ext_devset_rw(_name, _func) \
881 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
882
883 #define ide_ext_devset_rw_sync(_name, _func) \
884 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
885
886 #define ide_decl_devset(_name) \
887 extern const struct ide_devset ide_devset_##_name
888
889 ide_decl_devset(io_32bit);
890 ide_decl_devset(keepsettings);
891 ide_decl_devset(pio_mode);
892 ide_decl_devset(unmaskirq);
893 ide_decl_devset(using_dma);
894
895 #ifdef CONFIG_IDE_PROC_FS
896 /*
897 * /proc/ide interface
898 */
899
900 #define ide_devset_rw_field(_name, _field) \
901 ide_devset_get(_name, _field); \
902 ide_devset_set(_name, _field); \
903 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
904
905 #define ide_devset_rw_flag(_name, _field) \
906 ide_devset_get_flag(_name, _field); \
907 ide_devset_set_flag(_name, _field); \
908 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
909
910 struct ide_proc_devset {
911 const char *name;
912 const struct ide_devset *setting;
913 int min, max;
914 int (*mulf)(ide_drive_t *);
915 int (*divf)(ide_drive_t *);
916 };
917
918 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
919 .name = __stringify(_name), \
920 .setting = &ide_devset_##_name, \
921 .min = _min, \
922 .max = _max, \
923 .mulf = _mulf, \
924 .divf = _divf, \
925 }
926
927 #define IDE_PROC_DEVSET(_name, _min, _max) \
928 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
929
930 typedef struct {
931 const char *name;
932 umode_t mode;
933 const struct file_operations *proc_fops;
934 } ide_proc_entry_t;
935
936 void proc_ide_create(void);
937 void proc_ide_destroy(void);
938 void ide_proc_register_port(ide_hwif_t *);
939 void ide_proc_port_register_devices(ide_hwif_t *);
940 void ide_proc_unregister_device(ide_drive_t *);
941 void ide_proc_unregister_port(ide_hwif_t *);
942 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
943 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
944
945 extern const struct file_operations ide_capacity_proc_fops;
946 extern const struct file_operations ide_geometry_proc_fops;
947 #else
948 static inline void proc_ide_create(void) { ; }
949 static inline void proc_ide_destroy(void) { ; }
950 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
951 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
952 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
953 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
954 static inline void ide_proc_register_driver(ide_drive_t *drive,
955 struct ide_driver *driver) { ; }
956 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
957 struct ide_driver *driver) { ; }
958 #endif
959
960 enum {
961 /* enter/exit functions */
962 IDE_DBG_FUNC = (1 << 0),
963 /* sense key/asc handling */
964 IDE_DBG_SENSE = (1 << 1),
965 /* packet commands handling */
966 IDE_DBG_PC = (1 << 2),
967 /* request handling */
968 IDE_DBG_RQ = (1 << 3),
969 /* driver probing/setup */
970 IDE_DBG_PROBE = (1 << 4),
971 };
972
973 /* DRV_NAME has to be defined in the driver before using the macro below */
974 #define __ide_debug_log(lvl, fmt, args...) \
975 { \
976 if (unlikely(drive->debug_mask & lvl)) \
977 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
978 __func__, ## args); \
979 }
980
981 /*
982 * Power Management state machine (rq->pm->pm_step).
983 *
984 * For each step, the core calls ide_start_power_step() first.
985 * This can return:
986 * - ide_stopped : In this case, the core calls us back again unless
987 * step have been set to ide_power_state_completed.
988 * - ide_started : In this case, the channel is left busy until an
989 * async event (interrupt) occurs.
990 * Typically, ide_start_power_step() will issue a taskfile request with
991 * do_rw_taskfile().
992 *
993 * Upon reception of the interrupt, the core will call ide_complete_power_step()
994 * with the error code if any. This routine should update the step value
995 * and return. It should not start a new request. The core will call
996 * ide_start_power_step() for the new step value, unless step have been
997 * set to IDE_PM_COMPLETED.
998 */
999 enum {
1000 IDE_PM_START_SUSPEND,
1001 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1002 IDE_PM_STANDBY,
1003
1004 IDE_PM_START_RESUME,
1005 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1006 IDE_PM_IDLE,
1007 IDE_PM_RESTORE_DMA,
1008
1009 IDE_PM_COMPLETED,
1010 };
1011
1012 int generic_ide_suspend(struct device *, pm_message_t);
1013 int generic_ide_resume(struct device *);
1014
1015 void ide_complete_power_step(ide_drive_t *, struct request *);
1016 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1017 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1018 void ide_check_pm_state(ide_drive_t *, struct request *);
1019
1020 /*
1021 * Subdrivers support.
1022 *
1023 * The gendriver.owner field should be set to the module owner of this driver.
1024 * The gendriver.name field should be set to the name of this driver
1025 */
1026 struct ide_driver {
1027 const char *version;
1028 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1029 struct device_driver gen_driver;
1030 int (*probe)(ide_drive_t *);
1031 void (*remove)(ide_drive_t *);
1032 void (*resume)(ide_drive_t *);
1033 void (*shutdown)(ide_drive_t *);
1034 #ifdef CONFIG_IDE_PROC_FS
1035 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1036 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1037 #endif
1038 };
1039
1040 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1041
1042 int ide_device_get(ide_drive_t *);
1043 void ide_device_put(ide_drive_t *);
1044
1045 struct ide_ioctl_devset {
1046 unsigned int get_ioctl;
1047 unsigned int set_ioctl;
1048 const struct ide_devset *setting;
1049 };
1050
1051 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1052 unsigned long, const struct ide_ioctl_devset *);
1053
1054 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1055
1056 extern int ide_vlb_clk;
1057 extern int ide_pci_clk;
1058
1059 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1060 void ide_kill_rq(ide_drive_t *, struct request *);
1061
1062 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1063 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1064
1065 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1066 unsigned int);
1067
1068 void ide_pad_transfer(ide_drive_t *, int, int);
1069
1070 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1071
1072 void ide_fix_driveid(u16 *);
1073
1074 extern void ide_fixstring(u8 *, const int, const int);
1075
1076 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1077
1078 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1079 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1080
1081 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1082 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1083
1084 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1085
1086 extern int ide_devset_execute(ide_drive_t *drive,
1087 const struct ide_devset *setting, int arg);
1088
1089 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1090 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1091
1092 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1093 void ide_tf_dump(const char *, struct ide_cmd *);
1094
1095 void ide_exec_command(ide_hwif_t *, u8);
1096 u8 ide_read_status(ide_hwif_t *);
1097 u8 ide_read_altstatus(ide_hwif_t *);
1098 void ide_write_devctl(ide_hwif_t *, u8);
1099
1100 void ide_dev_select(ide_drive_t *);
1101 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1102 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1103
1104 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1105 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1106
1107 void SELECT_MASK(ide_drive_t *, int);
1108
1109 u8 ide_read_error(ide_drive_t *);
1110 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1111
1112 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1113
1114 int ide_check_atapi_device(ide_drive_t *, const char *);
1115
1116 void ide_init_pc(struct ide_atapi_pc *);
1117
1118 /* Disk head parking */
1119 extern wait_queue_head_t ide_park_wq;
1120 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1121 char *buf);
1122 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1123 const char *buf, size_t len);
1124
1125 /*
1126 * Special requests for ide-tape block device strategy routine.
1127 *
1128 * In order to service a character device command, we add special requests to
1129 * the tail of our block device request queue and wait for their completion.
1130 */
1131 enum {
1132 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1133 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1134 REQ_IDETAPE_READ = (1 << 2),
1135 REQ_IDETAPE_WRITE = (1 << 3),
1136 };
1137
1138 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1139 void *, unsigned int);
1140
1141 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1142 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1143 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1144 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1145 void ide_retry_pc(ide_drive_t *drive);
1146
1147 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1148 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1149
1150 int ide_cd_expiry(ide_drive_t *);
1151
1152 int ide_cd_get_xferlen(struct request *);
1153
1154 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1155
1156 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1157
1158 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1159
1160 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1161
1162 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1163 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1164
1165 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1166
1167 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1168
1169 extern int ide_driveid_update(ide_drive_t *);
1170 extern int ide_config_drive_speed(ide_drive_t *, u8);
1171 extern u8 eighty_ninty_three (ide_drive_t *);
1172 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1173
1174 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1175
1176 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1177
1178 extern void ide_timer_expiry(unsigned long);
1179 extern irqreturn_t ide_intr(int irq, void *dev_id);
1180 extern void do_ide_request(struct request_queue *);
1181 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1182
1183 void ide_init_disk(struct gendisk *, ide_drive_t *);
1184
1185 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1186 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1187 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1188 #else
1189 #define ide_pci_register_driver(d) pci_register_driver(d)
1190 #endif
1191
1192 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1193 {
1194 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1195 return 1;
1196 return 0;
1197 }
1198
1199 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1200 struct ide_hw *, struct ide_hw **);
1201 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1202
1203 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1204 int ide_pci_set_master(struct pci_dev *, const char *);
1205 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1206 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1207 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1208 #else
1209 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1210 const struct ide_port_info *d)
1211 {
1212 return -EINVAL;
1213 }
1214 #endif
1215
1216 struct ide_pci_enablebit {
1217 u8 reg; /* byte pci reg holding the enable-bit */
1218 u8 mask; /* mask to isolate the enable-bit */
1219 u8 val; /* value of masked reg when "enabled" */
1220 };
1221
1222 enum {
1223 /* Uses ISA control ports not PCI ones. */
1224 IDE_HFLAG_ISA_PORTS = (1 << 0),
1225 /* single port device */
1226 IDE_HFLAG_SINGLE = (1 << 1),
1227 /* don't use legacy PIO blacklist */
1228 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1229 /* set for the second port of QD65xx */
1230 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1231 /* use PIO8/9 for prefetch off/on */
1232 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1233 /* use PIO6/7 for fast-devsel off/on */
1234 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1235 /* use 100-102 and 200-202 PIO values to set DMA modes */
1236 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1237 /*
1238 * keep DMA setting when programming PIO mode, may be used only
1239 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1240 */
1241 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1242 /* program host for the transfer mode after programming device */
1243 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1244 /* don't program host/device for the transfer mode ("smart" hosts) */
1245 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1246 /* trust BIOS for programming chipset/device for DMA */
1247 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1248 /* host is CS5510/CS5520 */
1249 IDE_HFLAG_CS5520 = (1 << 11),
1250 /* ATAPI DMA is unsupported */
1251 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1252 /* set if host is a "non-bootable" controller */
1253 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1254 /* host doesn't support DMA */
1255 IDE_HFLAG_NO_DMA = (1 << 14),
1256 /* check if host is PCI IDE device before allowing DMA */
1257 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1258 /* host uses MMIO */
1259 IDE_HFLAG_MMIO = (1 << 16),
1260 /* no LBA48 */
1261 IDE_HFLAG_NO_LBA48 = (1 << 17),
1262 /* no LBA48 DMA */
1263 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1264 /* data FIFO is cleared by an error */
1265 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1266 /* serialize ports */
1267 IDE_HFLAG_SERIALIZE = (1 << 20),
1268 /* host is DTC2278 */
1269 IDE_HFLAG_DTC2278 = (1 << 21),
1270 /* 4 devices on a single set of I/O ports */
1271 IDE_HFLAG_4DRIVES = (1 << 22),
1272 /* host is TRM290 */
1273 IDE_HFLAG_TRM290 = (1 << 23),
1274 /* use 32-bit I/O ops */
1275 IDE_HFLAG_IO_32BIT = (1 << 24),
1276 /* unmask IRQs */
1277 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1278 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1279 /* serialize ports if DMA is possible (for sl82c105) */
1280 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1281 /* force host out of "simplex" mode */
1282 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1283 /* DSC overlap is unsupported */
1284 IDE_HFLAG_NO_DSC = (1 << 29),
1285 /* never use 32-bit I/O ops */
1286 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1287 /* never unmask IRQs */
1288 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1289 };
1290
1291 #ifdef CONFIG_BLK_DEV_OFFBOARD
1292 # define IDE_HFLAG_OFF_BOARD 0
1293 #else
1294 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1295 #endif
1296
1297 struct ide_port_info {
1298 char *name;
1299
1300 int (*init_chipset)(struct pci_dev *);
1301
1302 void (*get_lock)(irq_handler_t, void *);
1303 void (*release_lock)(void);
1304
1305 void (*init_iops)(ide_hwif_t *);
1306 void (*init_hwif)(ide_hwif_t *);
1307 int (*init_dma)(ide_hwif_t *,
1308 const struct ide_port_info *);
1309
1310 const struct ide_tp_ops *tp_ops;
1311 const struct ide_port_ops *port_ops;
1312 const struct ide_dma_ops *dma_ops;
1313
1314 struct ide_pci_enablebit enablebits[2];
1315
1316 hwif_chipset_t chipset;
1317
1318 u16 max_sectors; /* if < than the default one */
1319
1320 u32 host_flags;
1321
1322 int irq_flags;
1323
1324 u8 pio_mask;
1325 u8 swdma_mask;
1326 u8 mwdma_mask;
1327 u8 udma_mask;
1328 };
1329
1330 /*
1331 * State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
1332 * requests.
1333 */
1334 struct ide_pm_state {
1335 /* PM state machine step value, currently driver specific */
1336 int pm_step;
1337 /* requested PM state value (S1, S2, S3, S4, ...) */
1338 u32 pm_state;
1339 void* data; /* for driver use */
1340 };
1341
1342
1343 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1344 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1345 const struct ide_port_info *, void *);
1346 void ide_pci_remove(struct pci_dev *);
1347
1348 #ifdef CONFIG_PM
1349 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1350 int ide_pci_resume(struct pci_dev *);
1351 #else
1352 #define ide_pci_suspend NULL
1353 #define ide_pci_resume NULL
1354 #endif
1355
1356 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1357 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1358
1359 #define BAD_DMA_DRIVE 0
1360 #define GOOD_DMA_DRIVE 1
1361
1362 struct drive_list_entry {
1363 const char *id_model;
1364 const char *id_firmware;
1365 };
1366
1367 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1368
1369 #ifdef CONFIG_BLK_DEV_IDEDMA
1370 int ide_dma_good_drive(ide_drive_t *);
1371 int __ide_dma_bad_drive(ide_drive_t *);
1372
1373 u8 ide_find_dma_mode(ide_drive_t *, u8);
1374
1375 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1376 {
1377 return ide_find_dma_mode(drive, XFER_UDMA_6);
1378 }
1379
1380 void ide_dma_off_quietly(ide_drive_t *);
1381 void ide_dma_off(ide_drive_t *);
1382 void ide_dma_on(ide_drive_t *);
1383 int ide_set_dma(ide_drive_t *);
1384 void ide_check_dma_crc(ide_drive_t *);
1385 ide_startstop_t ide_dma_intr(ide_drive_t *);
1386
1387 int ide_allocate_dma_engine(ide_hwif_t *);
1388 void ide_release_dma_engine(ide_hwif_t *);
1389
1390 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1391 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1392
1393 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1394 int config_drive_for_dma(ide_drive_t *);
1395 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1396 void ide_dma_host_set(ide_drive_t *, int);
1397 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1398 extern void ide_dma_start(ide_drive_t *);
1399 int ide_dma_end(ide_drive_t *);
1400 int ide_dma_test_irq(ide_drive_t *);
1401 int ide_dma_sff_timer_expiry(ide_drive_t *);
1402 u8 ide_dma_sff_read_status(ide_hwif_t *);
1403 extern const struct ide_dma_ops sff_dma_ops;
1404 #else
1405 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1406 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1407
1408 void ide_dma_lost_irq(ide_drive_t *);
1409 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1410
1411 #else
1412 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1413 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1414 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1415 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1416 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1417 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1418 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1419 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1420 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1421 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1422 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1423 static inline int ide_dma_prepare(ide_drive_t *drive,
1424 struct ide_cmd *cmd) { return 1; }
1425 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1426 struct ide_cmd *cmd) { ; }
1427 #endif /* CONFIG_BLK_DEV_IDEDMA */
1428
1429 #ifdef CONFIG_BLK_DEV_IDEACPI
1430 int ide_acpi_init(void);
1431 bool ide_port_acpi(ide_hwif_t *hwif);
1432 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1433 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1434 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1435 void ide_acpi_init_port(ide_hwif_t *);
1436 void ide_acpi_port_init_devices(ide_hwif_t *);
1437 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1438 #else
1439 static inline int ide_acpi_init(void) { return 0; }
1440 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1441 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1442 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1443 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1444 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1445 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1446 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1447 #endif
1448
1449 void ide_register_region(struct gendisk *);
1450 void ide_unregister_region(struct gendisk *);
1451
1452 void ide_check_nien_quirk_list(ide_drive_t *);
1453 void ide_undecoded_slave(ide_drive_t *);
1454
1455 void ide_port_apply_params(ide_hwif_t *);
1456 int ide_sysfs_register_port(ide_hwif_t *);
1457
1458 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1459 unsigned int);
1460 void ide_host_free(struct ide_host *);
1461 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1462 struct ide_hw **);
1463 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1464 struct ide_host **);
1465 void ide_host_remove(struct ide_host *);
1466 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1467 void ide_port_unregister_devices(ide_hwif_t *);
1468 void ide_port_scan(ide_hwif_t *);
1469
1470 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1471 {
1472 return hwif->hwif_data;
1473 }
1474
1475 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1476 {
1477 hwif->hwif_data = data;
1478 }
1479
1480 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1481
1482 u64 ide_get_lba_addr(struct ide_cmd *, int);
1483 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1484
1485 struct ide_timing {
1486 u8 mode;
1487 u8 setup; /* t1 */
1488 u16 act8b; /* t2 for 8-bit io */
1489 u16 rec8b; /* t2i for 8-bit io */
1490 u16 cyc8b; /* t0 for 8-bit io */
1491 u16 active; /* t2 or tD */
1492 u16 recover; /* t2i or tK */
1493 u16 cycle; /* t0 */
1494 u16 udma; /* t2CYCTYP/2 */
1495 };
1496
1497 enum {
1498 IDE_TIMING_SETUP = (1 << 0),
1499 IDE_TIMING_ACT8B = (1 << 1),
1500 IDE_TIMING_REC8B = (1 << 2),
1501 IDE_TIMING_CYC8B = (1 << 3),
1502 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1503 IDE_TIMING_CYC8B,
1504 IDE_TIMING_ACTIVE = (1 << 4),
1505 IDE_TIMING_RECOVER = (1 << 5),
1506 IDE_TIMING_CYCLE = (1 << 6),
1507 IDE_TIMING_UDMA = (1 << 7),
1508 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1509 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1510 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1511 };
1512
1513 struct ide_timing *ide_timing_find_mode(u8);
1514 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1515 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1516 struct ide_timing *, unsigned int);
1517 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1518
1519 #ifdef CONFIG_IDE_XFER_MODE
1520 int ide_scan_pio_blacklist(char *);
1521 const char *ide_xfer_verbose(u8);
1522 int ide_pio_need_iordy(ide_drive_t *, const u8);
1523 int ide_set_pio_mode(ide_drive_t *, u8);
1524 int ide_set_dma_mode(ide_drive_t *, u8);
1525 void ide_set_pio(ide_drive_t *, u8);
1526 int ide_set_xfer_rate(ide_drive_t *, u8);
1527 #else
1528 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1529 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1530 #endif
1531
1532 static inline void ide_set_max_pio(ide_drive_t *drive)
1533 {
1534 ide_set_pio(drive, 255);
1535 }
1536
1537 char *ide_media_string(ide_drive_t *);
1538
1539 extern const struct attribute_group *ide_dev_groups[];
1540 extern struct bus_type ide_bus_type;
1541 extern struct class *ide_port_class;
1542
1543 static inline void ide_dump_identify(u8 *id)
1544 {
1545 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1546 }
1547
1548 static inline int hwif_to_node(ide_hwif_t *hwif)
1549 {
1550 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1551 }
1552
1553 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1554 {
1555 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1556
1557 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1558 }
1559
1560 static inline void *ide_get_drivedata(ide_drive_t *drive)
1561 {
1562 return drive->drive_data;
1563 }
1564
1565 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1566 {
1567 drive->drive_data = data;
1568 }
1569
1570 #define ide_port_for_each_dev(i, dev, port) \
1571 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1572
1573 #define ide_port_for_each_present_dev(i, dev, port) \
1574 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1575 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1576
1577 #define ide_host_for_each_port(i, port, host) \
1578 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1579
1580
1581 #endif /* _IDE_H */
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