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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[deliverable/linux.git] / include / linux / ide.h
1 #ifndef _IDE_H
2 #define _IDE_H
3 /*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/pci.h>
18 #include <linux/completion.h>
19 #include <linux/pm.h>
20 #include <linux/mutex.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
28 /* for request_sense */
29 #include <linux/cdrom.h>
30
31 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
32 # define SUPPORT_VLB_SYNC 0
33 #else
34 # define SUPPORT_VLB_SYNC 1
35 #endif
36
37 /*
38 * Probably not wise to fiddle with these
39 */
40 #define IDE_DEFAULT_MAX_FAILURES 1
41 #define ERROR_MAX 8 /* Max read/write errors per sector */
42 #define ERROR_RESET 3 /* Reset controller every 4th retry */
43 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
44
45 struct device;
46
47 /* Error codes returned in rq->errors to the higher part of the driver. */
48 enum {
49 IDE_DRV_ERROR_GENERAL = 101,
50 IDE_DRV_ERROR_FILEMARK = 102,
51 IDE_DRV_ERROR_EOD = 103,
52 };
53
54 /*
55 * Definitions for accessing IDE controller registers
56 */
57 #define IDE_NR_PORTS (10)
58
59 struct ide_io_ports {
60 unsigned long data_addr;
61
62 union {
63 unsigned long error_addr; /* read: error */
64 unsigned long feature_addr; /* write: feature */
65 };
66
67 unsigned long nsect_addr;
68 unsigned long lbal_addr;
69 unsigned long lbam_addr;
70 unsigned long lbah_addr;
71
72 unsigned long device_addr;
73
74 union {
75 unsigned long status_addr; /*  read: status  */
76 unsigned long command_addr; /* write: command */
77 };
78
79 unsigned long ctl_addr;
80
81 unsigned long irq_addr;
82 };
83
84 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
85
86 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
87 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
88 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
89 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
90
91 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
92
93 #define SATA_NR_PORTS (3) /* 16 possible ?? */
94
95 #define SATA_STATUS_OFFSET (0)
96 #define SATA_ERROR_OFFSET (1)
97 #define SATA_CONTROL_OFFSET (2)
98
99 /*
100 * Our Physical Region Descriptor (PRD) table should be large enough
101 * to handle the biggest I/O request we are likely to see. Since requests
102 * can have no more than 256 sectors, and since the typical blocksize is
103 * two or more sectors, we could get by with a limit of 128 entries here for
104 * the usual worst case. Most requests seem to include some contiguous blocks,
105 * further reducing the number of table entries required.
106 *
107 * The driver reverts to PIO mode for individual requests that exceed
108 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
109 * 100% of all crazy scenarios here is not necessary.
110 *
111 * As it turns out though, we must allocate a full 4KB page for this,
112 * so the two PRD tables (ide0 & ide1) will each get half of that,
113 * allowing each to have about 256 entries (8 bytes each) from this.
114 */
115 #define PRD_BYTES 8
116 #define PRD_ENTRIES 256
117
118 /*
119 * Some more useful definitions
120 */
121 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
122 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
123 #define SECTOR_SIZE 512
124
125 /*
126 * Timeouts for various operations:
127 */
128 enum {
129 /* spec allows up to 20ms, but CF cards and SSD drives need more */
130 WAIT_DRQ = 1 * HZ, /* 1s */
131 /* some laptops are very slow */
132 WAIT_READY = 5 * HZ, /* 5s */
133 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
134 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
135 /* worst case when spinning up */
136 WAIT_WORSTCASE = 30 * HZ, /* 30s */
137 /* maximum wait for an IRQ to happen */
138 WAIT_CMD = 10 * HZ, /* 10s */
139 /* Some drives require a longer IRQ timeout. */
140 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
141 /*
142 * Some drives (for example, Seagate STT3401A Travan) require a very
143 * long timeout, because they don't return an interrupt or clear their
144 * BSY bit until after the command completes (even retension commands).
145 */
146 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
147 /* minimum sleep time */
148 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
149 };
150
151 /*
152 * Op codes for special requests to be handled by ide_special_rq().
153 * Values should be in the range of 0x20 to 0x3f.
154 */
155 #define REQ_DRIVE_RESET 0x20
156 #define REQ_DEVSET_EXEC 0x21
157 #define REQ_PARK_HEADS 0x22
158 #define REQ_UNPARK_HEADS 0x23
159
160 /*
161 * hwif_chipset_t is used to keep track of the specific hardware
162 * chipset used by each IDE interface, if known.
163 */
164 enum { ide_unknown, ide_generic, ide_pci,
165 ide_cmd640, ide_dtc2278, ide_ali14xx,
166 ide_qd65xx, ide_umc8672, ide_ht6560b,
167 ide_4drives, ide_pmac, ide_acorn,
168 ide_au1xxx, ide_palm3710
169 };
170
171 typedef u8 hwif_chipset_t;
172
173 /*
174 * Structure to hold all information about the location of this port
175 */
176 struct ide_hw {
177 union {
178 struct ide_io_ports io_ports;
179 unsigned long io_ports_array[IDE_NR_PORTS];
180 };
181
182 int irq; /* our irq number */
183 struct device *dev, *parent;
184 unsigned long config;
185 };
186
187 static inline void ide_std_init_ports(struct ide_hw *hw,
188 unsigned long io_addr,
189 unsigned long ctl_addr)
190 {
191 unsigned int i;
192
193 for (i = 0; i <= 7; i++)
194 hw->io_ports_array[i] = io_addr++;
195
196 hw->io_ports.ctl_addr = ctl_addr;
197 }
198
199 #define MAX_HWIFS 10
200
201 /*
202 * Now for the data we need to maintain per-drive: ide_drive_t
203 */
204
205 #define ide_scsi 0x21
206 #define ide_disk 0x20
207 #define ide_optical 0x7
208 #define ide_cdrom 0x5
209 #define ide_tape 0x1
210 #define ide_floppy 0x0
211
212 /*
213 * Special Driver Flags
214 */
215 enum {
216 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
217 IDE_SFLAG_RECALIBRATE = (1 << 1),
218 IDE_SFLAG_SET_MULTMODE = (1 << 2),
219 };
220
221 /*
222 * Status returned from various ide_ functions
223 */
224 typedef enum {
225 ide_stopped, /* no drive operation was started */
226 ide_started, /* a drive operation was started, handler was set */
227 } ide_startstop_t;
228
229 enum {
230 IDE_VALID_ERROR = (1 << 1),
231 IDE_VALID_FEATURE = IDE_VALID_ERROR,
232 IDE_VALID_NSECT = (1 << 2),
233 IDE_VALID_LBAL = (1 << 3),
234 IDE_VALID_LBAM = (1 << 4),
235 IDE_VALID_LBAH = (1 << 5),
236 IDE_VALID_DEVICE = (1 << 6),
237 IDE_VALID_LBA = IDE_VALID_LBAL |
238 IDE_VALID_LBAM |
239 IDE_VALID_LBAH,
240 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
241 IDE_VALID_NSECT |
242 IDE_VALID_LBA,
243 IDE_VALID_IN_TF = IDE_VALID_NSECT |
244 IDE_VALID_LBA,
245 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
246 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
247 IDE_VALID_NSECT |
248 IDE_VALID_LBA,
249 };
250
251 enum {
252 IDE_TFLAG_LBA48 = (1 << 0),
253 IDE_TFLAG_WRITE = (1 << 1),
254 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
255 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
256 /* force 16-bit I/O operations */
257 IDE_TFLAG_IO_16BIT = (1 << 4),
258 /* struct ide_cmd was allocated using kmalloc() */
259 IDE_TFLAG_DYN = (1 << 5),
260 IDE_TFLAG_FS = (1 << 6),
261 IDE_TFLAG_MULTI_PIO = (1 << 7),
262 IDE_TFLAG_SET_XFER = (1 << 8),
263 };
264
265 enum {
266 IDE_FTFLAG_FLAGGED = (1 << 0),
267 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
268 IDE_FTFLAG_OUT_DATA = (1 << 2),
269 IDE_FTFLAG_IN_DATA = (1 << 3),
270 };
271
272 struct ide_taskfile {
273 u8 data; /* 0: data byte (for TASKFILE ioctl) */
274 union { /* 1: */
275 u8 error; /* read: error */
276 u8 feature; /* write: feature */
277 };
278 u8 nsect; /* 2: number of sectors */
279 u8 lbal; /* 3: LBA low */
280 u8 lbam; /* 4: LBA mid */
281 u8 lbah; /* 5: LBA high */
282 u8 device; /* 6: device select */
283 union { /* 7: */
284 u8 status; /* read: status */
285 u8 command; /* write: command */
286 };
287 };
288
289 struct ide_cmd {
290 struct ide_taskfile tf;
291 struct ide_taskfile hob;
292 struct {
293 struct {
294 u8 tf;
295 u8 hob;
296 } out, in;
297 } valid;
298
299 u16 tf_flags;
300 u8 ftf_flags; /* for TASKFILE ioctl */
301 int protocol;
302
303 int sg_nents; /* number of sg entries */
304 int orig_sg_nents;
305 int sg_dma_direction; /* DMA transfer direction */
306
307 unsigned int nbytes;
308 unsigned int nleft;
309 unsigned int last_xfer_len;
310
311 struct scatterlist *cursg;
312 unsigned int cursg_ofs;
313
314 struct request *rq; /* copy of request */
315 };
316
317 /* ATAPI packet command flags */
318 enum {
319 /* set when an error is considered normal - no retry (ide-tape) */
320 PC_FLAG_ABORT = (1 << 0),
321 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
322 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
323 PC_FLAG_DMA_OK = (1 << 3),
324 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
325 PC_FLAG_DMA_ERROR = (1 << 5),
326 PC_FLAG_WRITING = (1 << 6),
327 };
328
329 #define ATAPI_WAIT_PC (60 * HZ)
330
331 struct ide_atapi_pc {
332 /* actual packet bytes */
333 u8 c[12];
334 /* incremented on each retry */
335 int retries;
336 int error;
337
338 /* bytes to transfer */
339 int req_xfer;
340
341 /* the corresponding request */
342 struct request *rq;
343
344 unsigned long flags;
345
346 /*
347 * those are more or less driver-specific and some of them are subject
348 * to change/removal later.
349 */
350 unsigned long timeout;
351 };
352
353 struct ide_devset;
354 struct ide_driver;
355
356 #ifdef CONFIG_BLK_DEV_IDEACPI
357 struct ide_acpi_drive_link;
358 struct ide_acpi_hwif_link;
359 #endif
360
361 struct ide_drive_s;
362
363 struct ide_disk_ops {
364 int (*check)(struct ide_drive_s *, const char *);
365 int (*get_capacity)(struct ide_drive_s *);
366 void (*unlock_native_capacity)(struct ide_drive_s *);
367 void (*setup)(struct ide_drive_s *);
368 void (*flush)(struct ide_drive_s *);
369 int (*init_media)(struct ide_drive_s *, struct gendisk *);
370 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
371 int);
372 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
373 sector_t);
374 int (*ioctl)(struct ide_drive_s *, struct block_device *,
375 fmode_t, unsigned int, unsigned long);
376 };
377
378 /* ATAPI device flags */
379 enum {
380 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
381
382 /* ide-cd */
383 /* Drive cannot eject the disc. */
384 IDE_AFLAG_NO_EJECT = (1 << 1),
385 /* Drive is a pre ATAPI 1.2 drive. */
386 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
387 /* TOC addresses are in BCD. */
388 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
389 /* TOC track numbers are in BCD. */
390 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
391 /* Saved TOC information is current. */
392 IDE_AFLAG_TOC_VALID = (1 << 6),
393 /* We think that the drive door is locked. */
394 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
395 /* SET_CD_SPEED command is unsupported. */
396 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
397 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
398 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
399 IDE_AFLAG_SANYO_3CD = (1 << 11),
400 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
401 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
402 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
403
404 /* ide-floppy */
405 /* Avoid commands not supported in Clik drive */
406 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
407 /* Requires BH algorithm for packets */
408 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
409 /* Supports format progress report */
410 IDE_AFLAG_SRFP = (1 << 17),
411
412 /* ide-tape */
413 IDE_AFLAG_IGNORE_DSC = (1 << 18),
414 /* 0 When the tape position is unknown */
415 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
416 /* Device already opened */
417 IDE_AFLAG_BUSY = (1 << 20),
418 /* Attempt to auto-detect the current user block size */
419 IDE_AFLAG_DETECT_BS = (1 << 21),
420 /* Currently on a filemark */
421 IDE_AFLAG_FILEMARK = (1 << 22),
422 /* 0 = no tape is loaded, so we don't rewind after ejecting */
423 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
424
425 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
426 };
427
428 /* device flags */
429 enum {
430 /* restore settings after device reset */
431 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
432 /* device is using DMA for read/write */
433 IDE_DFLAG_USING_DMA = (1 << 1),
434 /* okay to unmask other IRQs */
435 IDE_DFLAG_UNMASK = (1 << 2),
436 /* don't attempt flushes */
437 IDE_DFLAG_NOFLUSH = (1 << 3),
438 /* DSC overlap */
439 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
440 /* give potential excess bandwidth */
441 IDE_DFLAG_NICE1 = (1 << 5),
442 /* device is physically present */
443 IDE_DFLAG_PRESENT = (1 << 6),
444 /* disable Host Protected Area */
445 IDE_DFLAG_NOHPA = (1 << 7),
446 /* id read from device (synthetic if not set) */
447 IDE_DFLAG_ID_READ = (1 << 8),
448 IDE_DFLAG_NOPROBE = (1 << 9),
449 /* need to do check_media_change() */
450 IDE_DFLAG_REMOVABLE = (1 << 10),
451 /* needed for removable devices */
452 IDE_DFLAG_ATTACH = (1 << 11),
453 IDE_DFLAG_FORCED_GEOM = (1 << 12),
454 /* disallow setting unmask bit */
455 IDE_DFLAG_NO_UNMASK = (1 << 13),
456 /* disallow enabling 32-bit I/O */
457 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
458 /* for removable only: door lock/unlock works */
459 IDE_DFLAG_DOORLOCKING = (1 << 15),
460 /* disallow DMA */
461 IDE_DFLAG_NODMA = (1 << 16),
462 /* powermanagement told us not to do anything, so sleep nicely */
463 IDE_DFLAG_BLOCKED = (1 << 17),
464 /* sleeping & sleep field valid */
465 IDE_DFLAG_SLEEPING = (1 << 18),
466 IDE_DFLAG_POST_RESET = (1 << 19),
467 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
468 IDE_DFLAG_LBA48 = (1 << 21),
469 /* status of write cache */
470 IDE_DFLAG_WCACHE = (1 << 22),
471 /* used for ignoring ATA_DF */
472 IDE_DFLAG_NOWERR = (1 << 23),
473 /* retrying in PIO */
474 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
475 IDE_DFLAG_LBA = (1 << 25),
476 /* don't unload heads */
477 IDE_DFLAG_NO_UNLOAD = (1 << 26),
478 /* heads unloaded, please don't reset port */
479 IDE_DFLAG_PARKED = (1 << 27),
480 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
481 /* write protect */
482 IDE_DFLAG_WP = (1 << 29),
483 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
484 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
485 };
486
487 struct ide_drive_s {
488 char name[4]; /* drive name, such as "hda" */
489 char driver_req[10]; /* requests specific driver */
490
491 struct request_queue *queue; /* request queue */
492
493 struct request *rq; /* current request */
494 void *driver_data; /* extra driver data */
495 u16 *id; /* identification info */
496 #ifdef CONFIG_IDE_PROC_FS
497 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
498 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
499 #endif
500 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
501
502 const struct ide_disk_ops *disk_ops;
503
504 unsigned long dev_flags;
505
506 unsigned long sleep; /* sleep until this time */
507 unsigned long timeout; /* max time to wait for irq */
508
509 u8 special_flags; /* special action flags */
510
511 u8 select; /* basic drive/head select reg value */
512 u8 retry_pio; /* retrying dma capable host in pio */
513 u8 waiting_for_dma; /* dma currently in progress */
514 u8 dma; /* atapi dma flag */
515
516 u8 init_speed; /* transfer rate set at boot */
517 u8 current_speed; /* current transfer rate set */
518 u8 desired_speed; /* desired transfer rate set */
519 u8 pio_mode; /* for ->set_pio_mode _only_ */
520 u8 dma_mode; /* for ->set_dma_mode _only_ */
521 u8 dn; /* now wide spread use */
522 u8 acoustic; /* acoustic management */
523 u8 media; /* disk, cdrom, tape, floppy, ... */
524 u8 ready_stat; /* min status value for drive ready */
525 u8 mult_count; /* current multiple sector setting */
526 u8 mult_req; /* requested multiple sector setting */
527 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
528 u8 bad_wstat; /* used for ignoring ATA_DF */
529 u8 head; /* "real" number of heads */
530 u8 sect; /* "real" sectors per track */
531 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
532 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
533
534 /* delay this long before sending packet command */
535 u8 pc_delay;
536
537 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
538 unsigned int cyl; /* "real" number of cyls */
539 void *drive_data; /* used by set_pio_mode/dev_select() */
540 unsigned int failures; /* current failure count */
541 unsigned int max_failures; /* maximum allowed failure count */
542 u64 probed_capacity;/* initial/native media capacity */
543 u64 capacity64; /* total number of sectors */
544
545 int lun; /* logical unit */
546 int crc_count; /* crc counter to reduce drive speed */
547
548 unsigned long debug_mask; /* debugging levels switch */
549
550 #ifdef CONFIG_BLK_DEV_IDEACPI
551 struct ide_acpi_drive_link *acpidata;
552 #endif
553 struct list_head list;
554 struct device gendev;
555 struct completion gendev_rel_comp; /* to deal with device release() */
556
557 /* current packet command */
558 struct ide_atapi_pc *pc;
559
560 /* last failed packet command */
561 struct ide_atapi_pc *failed_pc;
562
563 /* callback for packet commands */
564 int (*pc_callback)(struct ide_drive_s *, int);
565
566 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
567
568 unsigned long atapi_flags;
569
570 struct ide_atapi_pc request_sense_pc;
571
572 /* current sense rq and buffer */
573 bool sense_rq_armed;
574 struct request sense_rq;
575 struct request_sense sense_data;
576 };
577
578 typedef struct ide_drive_s ide_drive_t;
579
580 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
581
582 #define to_ide_drv(obj, cont_type) \
583 container_of(obj, struct cont_type, dev)
584
585 #define ide_drv_g(disk, cont_type) \
586 container_of((disk)->private_data, struct cont_type, driver)
587
588 struct ide_port_info;
589
590 struct ide_tp_ops {
591 void (*exec_command)(struct hwif_s *, u8);
592 u8 (*read_status)(struct hwif_s *);
593 u8 (*read_altstatus)(struct hwif_s *);
594 void (*write_devctl)(struct hwif_s *, u8);
595
596 void (*dev_select)(ide_drive_t *);
597 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
598 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
599
600 void (*input_data)(ide_drive_t *, struct ide_cmd *,
601 void *, unsigned int);
602 void (*output_data)(ide_drive_t *, struct ide_cmd *,
603 void *, unsigned int);
604 };
605
606 extern const struct ide_tp_ops default_tp_ops;
607
608 /**
609 * struct ide_port_ops - IDE port operations
610 *
611 * @init_dev: host specific initialization of a device
612 * @set_pio_mode: routine to program host for PIO mode
613 * @set_dma_mode: routine to program host for DMA mode
614 * @reset_poll: chipset polling based on hba specifics
615 * @pre_reset: chipset specific changes to default for device-hba resets
616 * @resetproc: routine to reset controller after a disk reset
617 * @maskproc: special host masking for drive selection
618 * @quirkproc: check host's drive quirk list
619 * @clear_irq: clear IRQ
620 *
621 * @mdma_filter: filter MDMA modes
622 * @udma_filter: filter UDMA modes
623 *
624 * @cable_detect: detect cable type
625 */
626 struct ide_port_ops {
627 void (*init_dev)(ide_drive_t *);
628 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
629 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
630 int (*reset_poll)(ide_drive_t *);
631 void (*pre_reset)(ide_drive_t *);
632 void (*resetproc)(ide_drive_t *);
633 void (*maskproc)(ide_drive_t *, int);
634 void (*quirkproc)(ide_drive_t *);
635 void (*clear_irq)(ide_drive_t *);
636 int (*test_irq)(struct hwif_s *);
637
638 u8 (*mdma_filter)(ide_drive_t *);
639 u8 (*udma_filter)(ide_drive_t *);
640
641 u8 (*cable_detect)(struct hwif_s *);
642 };
643
644 struct ide_dma_ops {
645 void (*dma_host_set)(struct ide_drive_s *, int);
646 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
647 void (*dma_start)(struct ide_drive_s *);
648 int (*dma_end)(struct ide_drive_s *);
649 int (*dma_test_irq)(struct ide_drive_s *);
650 void (*dma_lost_irq)(struct ide_drive_s *);
651 /* below ones are optional */
652 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
653 int (*dma_timer_expiry)(struct ide_drive_s *);
654 void (*dma_clear)(struct ide_drive_s *);
655 /*
656 * The following method is optional and only required to be
657 * implemented for the SFF-8038i compatible controllers.
658 */
659 u8 (*dma_sff_read_status)(struct hwif_s *);
660 };
661
662 enum {
663 IDE_PFLAG_PROBING = (1 << 0),
664 };
665
666 struct ide_host;
667
668 typedef struct hwif_s {
669 struct hwif_s *mate; /* other hwif from same PCI chip */
670 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
671
672 struct ide_host *host;
673
674 char name[6]; /* name of interface, eg. "ide0" */
675
676 struct ide_io_ports io_ports;
677
678 unsigned long sata_scr[SATA_NR_PORTS];
679
680 ide_drive_t *devices[MAX_DRIVES + 1];
681
682 unsigned long port_flags;
683
684 u8 major; /* our major number */
685 u8 index; /* 0 for ide0; 1 for ide1; ... */
686 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
687
688 u32 host_flags;
689
690 u8 pio_mask;
691
692 u8 ultra_mask;
693 u8 mwdma_mask;
694 u8 swdma_mask;
695
696 u8 cbl; /* cable type */
697
698 hwif_chipset_t chipset; /* sub-module for tuning.. */
699
700 struct device *dev;
701
702 void (*rw_disk)(ide_drive_t *, struct request *);
703
704 const struct ide_tp_ops *tp_ops;
705 const struct ide_port_ops *port_ops;
706 const struct ide_dma_ops *dma_ops;
707
708 /* dma physical region descriptor table (cpu view) */
709 unsigned int *dmatable_cpu;
710 /* dma physical region descriptor table (dma view) */
711 dma_addr_t dmatable_dma;
712
713 /* maximum number of PRD table entries */
714 int prd_max_nents;
715 /* PRD entry size in bytes */
716 int prd_ent_size;
717
718 /* Scatter-gather list used to build the above */
719 struct scatterlist *sg_table;
720 int sg_max_nents; /* Maximum number of entries in it */
721
722 struct ide_cmd cmd; /* current command */
723
724 int rqsize; /* max sectors per request */
725 int irq; /* our irq number */
726
727 unsigned long dma_base; /* base addr for dma ports */
728
729 unsigned long config_data; /* for use by chipset-specific code */
730 unsigned long select_data; /* for use by chipset-specific code */
731
732 unsigned long extra_base; /* extra addr for dma ports */
733 unsigned extra_ports; /* number of extra dma ports */
734
735 unsigned present : 1; /* this interface exists */
736 unsigned busy : 1; /* serializes devices on a port */
737
738 struct device gendev;
739 struct device *portdev;
740
741 struct completion gendev_rel_comp; /* To deal with device release() */
742
743 void *hwif_data; /* extra hwif data */
744
745 #ifdef CONFIG_BLK_DEV_IDEACPI
746 struct ide_acpi_hwif_link *acpidata;
747 #endif
748
749 /* IRQ handler, if active */
750 ide_startstop_t (*handler)(ide_drive_t *);
751
752 /* BOOL: polling active & poll_timeout field valid */
753 unsigned int polling : 1;
754
755 /* current drive */
756 ide_drive_t *cur_dev;
757
758 /* current request */
759 struct request *rq;
760
761 /* failsafe timer */
762 struct timer_list timer;
763 /* timeout value during long polls */
764 unsigned long poll_timeout;
765 /* queried upon timeouts */
766 int (*expiry)(ide_drive_t *);
767
768 int req_gen;
769 int req_gen_timer;
770
771 spinlock_t lock;
772 } ____cacheline_internodealigned_in_smp ide_hwif_t;
773
774 #define MAX_HOST_PORTS 4
775
776 struct ide_host {
777 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
778 unsigned int n_ports;
779 struct device *dev[2];
780
781 int (*init_chipset)(struct pci_dev *);
782
783 void (*get_lock)(irq_handler_t, void *);
784 void (*release_lock)(void);
785
786 irq_handler_t irq_handler;
787
788 unsigned long host_flags;
789
790 int irq_flags;
791
792 void *host_priv;
793 ide_hwif_t *cur_port; /* for hosts requiring serialization */
794
795 /* used for hosts requiring serialization */
796 volatile unsigned long host_busy;
797 };
798
799 #define IDE_HOST_BUSY 0
800
801 /*
802 * internal ide interrupt handler type
803 */
804 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
805 typedef int (ide_expiry_t)(ide_drive_t *);
806
807 /* used by ide-cd, ide-floppy, etc. */
808 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
809
810 extern struct mutex ide_setting_mtx;
811
812 /*
813 * configurable drive settings
814 */
815
816 #define DS_SYNC (1 << 0)
817
818 struct ide_devset {
819 int (*get)(ide_drive_t *);
820 int (*set)(ide_drive_t *, int);
821 unsigned int flags;
822 };
823
824 #define __DEVSET(_flags, _get, _set) { \
825 .flags = _flags, \
826 .get = _get, \
827 .set = _set, \
828 }
829
830 #define ide_devset_get(name, field) \
831 static int get_##name(ide_drive_t *drive) \
832 { \
833 return drive->field; \
834 }
835
836 #define ide_devset_set(name, field) \
837 static int set_##name(ide_drive_t *drive, int arg) \
838 { \
839 drive->field = arg; \
840 return 0; \
841 }
842
843 #define ide_devset_get_flag(name, flag) \
844 static int get_##name(ide_drive_t *drive) \
845 { \
846 return !!(drive->dev_flags & flag); \
847 }
848
849 #define ide_devset_set_flag(name, flag) \
850 static int set_##name(ide_drive_t *drive, int arg) \
851 { \
852 if (arg) \
853 drive->dev_flags |= flag; \
854 else \
855 drive->dev_flags &= ~flag; \
856 return 0; \
857 }
858
859 #define __IDE_DEVSET(_name, _flags, _get, _set) \
860 const struct ide_devset ide_devset_##_name = \
861 __DEVSET(_flags, _get, _set)
862
863 #define IDE_DEVSET(_name, _flags, _get, _set) \
864 static __IDE_DEVSET(_name, _flags, _get, _set)
865
866 #define ide_devset_rw(_name, _func) \
867 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
868
869 #define ide_devset_w(_name, _func) \
870 IDE_DEVSET(_name, 0, NULL, set_##_func)
871
872 #define ide_ext_devset_rw(_name, _func) \
873 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
874
875 #define ide_ext_devset_rw_sync(_name, _func) \
876 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
877
878 #define ide_decl_devset(_name) \
879 extern const struct ide_devset ide_devset_##_name
880
881 ide_decl_devset(io_32bit);
882 ide_decl_devset(keepsettings);
883 ide_decl_devset(pio_mode);
884 ide_decl_devset(unmaskirq);
885 ide_decl_devset(using_dma);
886
887 #ifdef CONFIG_IDE_PROC_FS
888 /*
889 * /proc/ide interface
890 */
891
892 #define ide_devset_rw_field(_name, _field) \
893 ide_devset_get(_name, _field); \
894 ide_devset_set(_name, _field); \
895 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
896
897 #define ide_devset_rw_flag(_name, _field) \
898 ide_devset_get_flag(_name, _field); \
899 ide_devset_set_flag(_name, _field); \
900 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
901
902 struct ide_proc_devset {
903 const char *name;
904 const struct ide_devset *setting;
905 int min, max;
906 int (*mulf)(ide_drive_t *);
907 int (*divf)(ide_drive_t *);
908 };
909
910 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
911 .name = __stringify(_name), \
912 .setting = &ide_devset_##_name, \
913 .min = _min, \
914 .max = _max, \
915 .mulf = _mulf, \
916 .divf = _divf, \
917 }
918
919 #define IDE_PROC_DEVSET(_name, _min, _max) \
920 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
921
922 typedef struct {
923 const char *name;
924 umode_t mode;
925 const struct file_operations *proc_fops;
926 } ide_proc_entry_t;
927
928 void proc_ide_create(void);
929 void proc_ide_destroy(void);
930 void ide_proc_register_port(ide_hwif_t *);
931 void ide_proc_port_register_devices(ide_hwif_t *);
932 void ide_proc_unregister_device(ide_drive_t *);
933 void ide_proc_unregister_port(ide_hwif_t *);
934 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
935 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
936
937 extern const struct file_operations ide_capacity_proc_fops;
938 extern const struct file_operations ide_geometry_proc_fops;
939 #else
940 static inline void proc_ide_create(void) { ; }
941 static inline void proc_ide_destroy(void) { ; }
942 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
943 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
944 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
945 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
946 static inline void ide_proc_register_driver(ide_drive_t *drive,
947 struct ide_driver *driver) { ; }
948 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
949 struct ide_driver *driver) { ; }
950 #endif
951
952 enum {
953 /* enter/exit functions */
954 IDE_DBG_FUNC = (1 << 0),
955 /* sense key/asc handling */
956 IDE_DBG_SENSE = (1 << 1),
957 /* packet commands handling */
958 IDE_DBG_PC = (1 << 2),
959 /* request handling */
960 IDE_DBG_RQ = (1 << 3),
961 /* driver probing/setup */
962 IDE_DBG_PROBE = (1 << 4),
963 };
964
965 /* DRV_NAME has to be defined in the driver before using the macro below */
966 #define __ide_debug_log(lvl, fmt, args...) \
967 { \
968 if (unlikely(drive->debug_mask & lvl)) \
969 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
970 __func__, ## args); \
971 }
972
973 /*
974 * Power Management state machine (rq->pm->pm_step).
975 *
976 * For each step, the core calls ide_start_power_step() first.
977 * This can return:
978 * - ide_stopped : In this case, the core calls us back again unless
979 * step have been set to ide_power_state_completed.
980 * - ide_started : In this case, the channel is left busy until an
981 * async event (interrupt) occurs.
982 * Typically, ide_start_power_step() will issue a taskfile request with
983 * do_rw_taskfile().
984 *
985 * Upon reception of the interrupt, the core will call ide_complete_power_step()
986 * with the error code if any. This routine should update the step value
987 * and return. It should not start a new request. The core will call
988 * ide_start_power_step() for the new step value, unless step have been
989 * set to IDE_PM_COMPLETED.
990 */
991 enum {
992 IDE_PM_START_SUSPEND,
993 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
994 IDE_PM_STANDBY,
995
996 IDE_PM_START_RESUME,
997 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
998 IDE_PM_IDLE,
999 IDE_PM_RESTORE_DMA,
1000
1001 IDE_PM_COMPLETED,
1002 };
1003
1004 int generic_ide_suspend(struct device *, pm_message_t);
1005 int generic_ide_resume(struct device *);
1006
1007 void ide_complete_power_step(ide_drive_t *, struct request *);
1008 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1009 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1010 void ide_check_pm_state(ide_drive_t *, struct request *);
1011
1012 /*
1013 * Subdrivers support.
1014 *
1015 * The gendriver.owner field should be set to the module owner of this driver.
1016 * The gendriver.name field should be set to the name of this driver
1017 */
1018 struct ide_driver {
1019 const char *version;
1020 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1021 struct device_driver gen_driver;
1022 int (*probe)(ide_drive_t *);
1023 void (*remove)(ide_drive_t *);
1024 void (*resume)(ide_drive_t *);
1025 void (*shutdown)(ide_drive_t *);
1026 #ifdef CONFIG_IDE_PROC_FS
1027 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1028 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1029 #endif
1030 };
1031
1032 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1033
1034 int ide_device_get(ide_drive_t *);
1035 void ide_device_put(ide_drive_t *);
1036
1037 struct ide_ioctl_devset {
1038 unsigned int get_ioctl;
1039 unsigned int set_ioctl;
1040 const struct ide_devset *setting;
1041 };
1042
1043 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1044 unsigned long, const struct ide_ioctl_devset *);
1045
1046 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1047
1048 extern int ide_vlb_clk;
1049 extern int ide_pci_clk;
1050
1051 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1052 void ide_kill_rq(ide_drive_t *, struct request *);
1053
1054 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1055 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1056
1057 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1058 unsigned int);
1059
1060 void ide_pad_transfer(ide_drive_t *, int, int);
1061
1062 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1063
1064 void ide_fix_driveid(u16 *);
1065
1066 extern void ide_fixstring(u8 *, const int, const int);
1067
1068 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1069
1070 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1071 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1072
1073 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1074 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1075
1076 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1077
1078 extern int ide_devset_execute(ide_drive_t *drive,
1079 const struct ide_devset *setting, int arg);
1080
1081 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1082 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1083
1084 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1085 void ide_tf_dump(const char *, struct ide_cmd *);
1086
1087 void ide_exec_command(ide_hwif_t *, u8);
1088 u8 ide_read_status(ide_hwif_t *);
1089 u8 ide_read_altstatus(ide_hwif_t *);
1090 void ide_write_devctl(ide_hwif_t *, u8);
1091
1092 void ide_dev_select(ide_drive_t *);
1093 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1094 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1095
1096 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1097 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1098
1099 void SELECT_MASK(ide_drive_t *, int);
1100
1101 u8 ide_read_error(ide_drive_t *);
1102 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1103
1104 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1105
1106 int ide_check_atapi_device(ide_drive_t *, const char *);
1107
1108 void ide_init_pc(struct ide_atapi_pc *);
1109
1110 /* Disk head parking */
1111 extern wait_queue_head_t ide_park_wq;
1112 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1113 char *buf);
1114 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1115 const char *buf, size_t len);
1116
1117 /*
1118 * Special requests for ide-tape block device strategy routine.
1119 *
1120 * In order to service a character device command, we add special requests to
1121 * the tail of our block device request queue and wait for their completion.
1122 */
1123 enum {
1124 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1125 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1126 REQ_IDETAPE_READ = (1 << 2),
1127 REQ_IDETAPE_WRITE = (1 << 3),
1128 };
1129
1130 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1131 void *, unsigned int);
1132
1133 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1134 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1135 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1136 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1137 void ide_retry_pc(ide_drive_t *drive);
1138
1139 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1140 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1141
1142 int ide_cd_expiry(ide_drive_t *);
1143
1144 int ide_cd_get_xferlen(struct request *);
1145
1146 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1147
1148 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1149
1150 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1151
1152 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1153
1154 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1155 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1156
1157 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1158
1159 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1160
1161 extern int ide_driveid_update(ide_drive_t *);
1162 extern int ide_config_drive_speed(ide_drive_t *, u8);
1163 extern u8 eighty_ninty_three (ide_drive_t *);
1164 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1165
1166 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1167
1168 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1169
1170 extern void ide_timer_expiry(unsigned long);
1171 extern irqreturn_t ide_intr(int irq, void *dev_id);
1172 extern void do_ide_request(struct request_queue *);
1173 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1174
1175 void ide_init_disk(struct gendisk *, ide_drive_t *);
1176
1177 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1178 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1179 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1180 #else
1181 #define ide_pci_register_driver(d) pci_register_driver(d)
1182 #endif
1183
1184 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1185 {
1186 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1187 return 1;
1188 return 0;
1189 }
1190
1191 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1192 struct ide_hw *, struct ide_hw **);
1193 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1194
1195 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1196 int ide_pci_set_master(struct pci_dev *, const char *);
1197 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1198 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1199 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1200 #else
1201 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1202 const struct ide_port_info *d)
1203 {
1204 return -EINVAL;
1205 }
1206 #endif
1207
1208 struct ide_pci_enablebit {
1209 u8 reg; /* byte pci reg holding the enable-bit */
1210 u8 mask; /* mask to isolate the enable-bit */
1211 u8 val; /* value of masked reg when "enabled" */
1212 };
1213
1214 enum {
1215 /* Uses ISA control ports not PCI ones. */
1216 IDE_HFLAG_ISA_PORTS = (1 << 0),
1217 /* single port device */
1218 IDE_HFLAG_SINGLE = (1 << 1),
1219 /* don't use legacy PIO blacklist */
1220 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1221 /* set for the second port of QD65xx */
1222 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1223 /* use PIO8/9 for prefetch off/on */
1224 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1225 /* use PIO6/7 for fast-devsel off/on */
1226 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1227 /* use 100-102 and 200-202 PIO values to set DMA modes */
1228 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1229 /*
1230 * keep DMA setting when programming PIO mode, may be used only
1231 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1232 */
1233 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1234 /* program host for the transfer mode after programming device */
1235 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1236 /* don't program host/device for the transfer mode ("smart" hosts) */
1237 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1238 /* trust BIOS for programming chipset/device for DMA */
1239 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1240 /* host is CS5510/CS5520 */
1241 IDE_HFLAG_CS5520 = (1 << 11),
1242 /* ATAPI DMA is unsupported */
1243 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1244 /* set if host is a "non-bootable" controller */
1245 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1246 /* host doesn't support DMA */
1247 IDE_HFLAG_NO_DMA = (1 << 14),
1248 /* check if host is PCI IDE device before allowing DMA */
1249 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1250 /* host uses MMIO */
1251 IDE_HFLAG_MMIO = (1 << 16),
1252 /* no LBA48 */
1253 IDE_HFLAG_NO_LBA48 = (1 << 17),
1254 /* no LBA48 DMA */
1255 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1256 /* data FIFO is cleared by an error */
1257 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1258 /* serialize ports */
1259 IDE_HFLAG_SERIALIZE = (1 << 20),
1260 /* host is DTC2278 */
1261 IDE_HFLAG_DTC2278 = (1 << 21),
1262 /* 4 devices on a single set of I/O ports */
1263 IDE_HFLAG_4DRIVES = (1 << 22),
1264 /* host is TRM290 */
1265 IDE_HFLAG_TRM290 = (1 << 23),
1266 /* use 32-bit I/O ops */
1267 IDE_HFLAG_IO_32BIT = (1 << 24),
1268 /* unmask IRQs */
1269 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1270 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1271 /* serialize ports if DMA is possible (for sl82c105) */
1272 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1273 /* force host out of "simplex" mode */
1274 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1275 /* DSC overlap is unsupported */
1276 IDE_HFLAG_NO_DSC = (1 << 29),
1277 /* never use 32-bit I/O ops */
1278 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1279 /* never unmask IRQs */
1280 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1281 };
1282
1283 #ifdef CONFIG_BLK_DEV_OFFBOARD
1284 # define IDE_HFLAG_OFF_BOARD 0
1285 #else
1286 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1287 #endif
1288
1289 struct ide_port_info {
1290 char *name;
1291
1292 int (*init_chipset)(struct pci_dev *);
1293
1294 void (*get_lock)(irq_handler_t, void *);
1295 void (*release_lock)(void);
1296
1297 void (*init_iops)(ide_hwif_t *);
1298 void (*init_hwif)(ide_hwif_t *);
1299 int (*init_dma)(ide_hwif_t *,
1300 const struct ide_port_info *);
1301
1302 const struct ide_tp_ops *tp_ops;
1303 const struct ide_port_ops *port_ops;
1304 const struct ide_dma_ops *dma_ops;
1305
1306 struct ide_pci_enablebit enablebits[2];
1307
1308 hwif_chipset_t chipset;
1309
1310 u16 max_sectors; /* if < than the default one */
1311
1312 u32 host_flags;
1313
1314 int irq_flags;
1315
1316 u8 pio_mask;
1317 u8 swdma_mask;
1318 u8 mwdma_mask;
1319 u8 udma_mask;
1320 };
1321
1322 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1323 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1324 const struct ide_port_info *, void *);
1325 void ide_pci_remove(struct pci_dev *);
1326
1327 #ifdef CONFIG_PM
1328 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1329 int ide_pci_resume(struct pci_dev *);
1330 #else
1331 #define ide_pci_suspend NULL
1332 #define ide_pci_resume NULL
1333 #endif
1334
1335 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1336 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1337
1338 #define BAD_DMA_DRIVE 0
1339 #define GOOD_DMA_DRIVE 1
1340
1341 struct drive_list_entry {
1342 const char *id_model;
1343 const char *id_firmware;
1344 };
1345
1346 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1347
1348 #ifdef CONFIG_BLK_DEV_IDEDMA
1349 int ide_dma_good_drive(ide_drive_t *);
1350 int __ide_dma_bad_drive(ide_drive_t *);
1351
1352 u8 ide_find_dma_mode(ide_drive_t *, u8);
1353
1354 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1355 {
1356 return ide_find_dma_mode(drive, XFER_UDMA_6);
1357 }
1358
1359 void ide_dma_off_quietly(ide_drive_t *);
1360 void ide_dma_off(ide_drive_t *);
1361 void ide_dma_on(ide_drive_t *);
1362 int ide_set_dma(ide_drive_t *);
1363 void ide_check_dma_crc(ide_drive_t *);
1364 ide_startstop_t ide_dma_intr(ide_drive_t *);
1365
1366 int ide_allocate_dma_engine(ide_hwif_t *);
1367 void ide_release_dma_engine(ide_hwif_t *);
1368
1369 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1370 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1371
1372 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1373 int config_drive_for_dma(ide_drive_t *);
1374 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1375 void ide_dma_host_set(ide_drive_t *, int);
1376 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1377 extern void ide_dma_start(ide_drive_t *);
1378 int ide_dma_end(ide_drive_t *);
1379 int ide_dma_test_irq(ide_drive_t *);
1380 int ide_dma_sff_timer_expiry(ide_drive_t *);
1381 u8 ide_dma_sff_read_status(ide_hwif_t *);
1382 extern const struct ide_dma_ops sff_dma_ops;
1383 #else
1384 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1385 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1386
1387 void ide_dma_lost_irq(ide_drive_t *);
1388 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1389
1390 #else
1391 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1392 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1393 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1394 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1395 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1396 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1397 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1398 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1399 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1400 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1401 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1402 static inline int ide_dma_prepare(ide_drive_t *drive,
1403 struct ide_cmd *cmd) { return 1; }
1404 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1405 struct ide_cmd *cmd) { ; }
1406 #endif /* CONFIG_BLK_DEV_IDEDMA */
1407
1408 #ifdef CONFIG_BLK_DEV_IDEACPI
1409 int ide_acpi_init(void);
1410 bool ide_port_acpi(ide_hwif_t *hwif);
1411 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1412 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1413 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1414 void ide_acpi_init_port(ide_hwif_t *);
1415 void ide_acpi_port_init_devices(ide_hwif_t *);
1416 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1417 #else
1418 static inline int ide_acpi_init(void) { return 0; }
1419 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1420 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1421 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1422 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1423 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1424 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1425 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1426 #endif
1427
1428 void ide_register_region(struct gendisk *);
1429 void ide_unregister_region(struct gendisk *);
1430
1431 void ide_check_nien_quirk_list(ide_drive_t *);
1432 void ide_undecoded_slave(ide_drive_t *);
1433
1434 void ide_port_apply_params(ide_hwif_t *);
1435 int ide_sysfs_register_port(ide_hwif_t *);
1436
1437 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1438 unsigned int);
1439 void ide_host_free(struct ide_host *);
1440 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1441 struct ide_hw **);
1442 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1443 struct ide_host **);
1444 void ide_host_remove(struct ide_host *);
1445 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1446 void ide_port_unregister_devices(ide_hwif_t *);
1447 void ide_port_scan(ide_hwif_t *);
1448
1449 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1450 {
1451 return hwif->hwif_data;
1452 }
1453
1454 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1455 {
1456 hwif->hwif_data = data;
1457 }
1458
1459 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1460
1461 u64 ide_get_lba_addr(struct ide_cmd *, int);
1462 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1463
1464 struct ide_timing {
1465 u8 mode;
1466 u8 setup; /* t1 */
1467 u16 act8b; /* t2 for 8-bit io */
1468 u16 rec8b; /* t2i for 8-bit io */
1469 u16 cyc8b; /* t0 for 8-bit io */
1470 u16 active; /* t2 or tD */
1471 u16 recover; /* t2i or tK */
1472 u16 cycle; /* t0 */
1473 u16 udma; /* t2CYCTYP/2 */
1474 };
1475
1476 enum {
1477 IDE_TIMING_SETUP = (1 << 0),
1478 IDE_TIMING_ACT8B = (1 << 1),
1479 IDE_TIMING_REC8B = (1 << 2),
1480 IDE_TIMING_CYC8B = (1 << 3),
1481 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1482 IDE_TIMING_CYC8B,
1483 IDE_TIMING_ACTIVE = (1 << 4),
1484 IDE_TIMING_RECOVER = (1 << 5),
1485 IDE_TIMING_CYCLE = (1 << 6),
1486 IDE_TIMING_UDMA = (1 << 7),
1487 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1488 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1489 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1490 };
1491
1492 struct ide_timing *ide_timing_find_mode(u8);
1493 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1494 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1495 struct ide_timing *, unsigned int);
1496 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1497
1498 #ifdef CONFIG_IDE_XFER_MODE
1499 int ide_scan_pio_blacklist(char *);
1500 const char *ide_xfer_verbose(u8);
1501 int ide_pio_need_iordy(ide_drive_t *, const u8);
1502 int ide_set_pio_mode(ide_drive_t *, u8);
1503 int ide_set_dma_mode(ide_drive_t *, u8);
1504 void ide_set_pio(ide_drive_t *, u8);
1505 int ide_set_xfer_rate(ide_drive_t *, u8);
1506 #else
1507 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1508 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1509 #endif
1510
1511 static inline void ide_set_max_pio(ide_drive_t *drive)
1512 {
1513 ide_set_pio(drive, 255);
1514 }
1515
1516 char *ide_media_string(ide_drive_t *);
1517
1518 extern struct device_attribute ide_dev_attrs[];
1519 extern struct bus_type ide_bus_type;
1520 extern struct class *ide_port_class;
1521
1522 static inline void ide_dump_identify(u8 *id)
1523 {
1524 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1525 }
1526
1527 static inline int hwif_to_node(ide_hwif_t *hwif)
1528 {
1529 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1530 }
1531
1532 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1533 {
1534 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1535
1536 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1537 }
1538
1539 static inline void *ide_get_drivedata(ide_drive_t *drive)
1540 {
1541 return drive->drive_data;
1542 }
1543
1544 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1545 {
1546 drive->drive_data = data;
1547 }
1548
1549 #define ide_port_for_each_dev(i, dev, port) \
1550 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1551
1552 #define ide_port_for_each_present_dev(i, dev, port) \
1553 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1554 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1555
1556 #define ide_host_for_each_port(i, port, host) \
1557 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1558
1559 #endif /* _IDE_H */
Linux kernel - Deliverables
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