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ACPI: simplify acpi_pci_irq_add_prt() API
[linux-2.6/linux-acpi-2.6.git] / include / linux / ide.h
blob9fed365a598b89845d83271f93d9fe3affef15f2
1 #ifndef _IDE_H
2 #define _IDE_H
3 /*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
20 #include <linux/pm.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
23 #endif
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
26 #include <asm/io.h>
27 #include <asm/mutex.h>
28
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
31 #else
32 # define SUPPORT_VLB_SYNC 1
33 #endif
34
35 /*
36 * Probably not wise to fiddle with these
37 */
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42
43 /* Error codes returned in rq->errors to the higher part of the driver. */
44 enum {
45 IDE_DRV_ERROR_GENERAL = 101,
46 IDE_DRV_ERROR_FILEMARK = 102,
47 IDE_DRV_ERROR_EOD = 103,
48 };
49
50 /*
51 * Definitions for accessing IDE controller registers
52 */
53 #define IDE_NR_PORTS (10)
54
55 struct ide_io_ports {
56 unsigned long data_addr;
57
58 union {
59 unsigned long error_addr; /* read: error */
60 unsigned long feature_addr; /* write: feature */
61 };
62
63 unsigned long nsect_addr;
64 unsigned long lbal_addr;
65 unsigned long lbam_addr;
66 unsigned long lbah_addr;
67
68 unsigned long device_addr;
69
70 union {
71 unsigned long status_addr; /*  read: status  */
72 unsigned long command_addr; /* write: command */
73 };
74
75 unsigned long ctl_addr;
76
77 unsigned long irq_addr;
78 };
79
80 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
81
82 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
83 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
84 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
85 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
86
87 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
88
89 #define SATA_NR_PORTS (3) /* 16 possible ?? */
90
91 #define SATA_STATUS_OFFSET (0)
92 #define SATA_ERROR_OFFSET (1)
93 #define SATA_CONTROL_OFFSET (2)
94
95 /*
96 * Our Physical Region Descriptor (PRD) table should be large enough
97 * to handle the biggest I/O request we are likely to see. Since requests
98 * can have no more than 256 sectors, and since the typical blocksize is
99 * two or more sectors, we could get by with a limit of 128 entries here for
100 * the usual worst case. Most requests seem to include some contiguous blocks,
101 * further reducing the number of table entries required.
102 *
103 * The driver reverts to PIO mode for individual requests that exceed
104 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
105 * 100% of all crazy scenarios here is not necessary.
106 *
107 * As it turns out though, we must allocate a full 4KB page for this,
108 * so the two PRD tables (ide0 & ide1) will each get half of that,
109 * allowing each to have about 256 entries (8 bytes each) from this.
110 */
111 #define PRD_BYTES 8
112 #define PRD_ENTRIES 256
113
114 /*
115 * Some more useful definitions
116 */
117 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
118 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
119 #define SECTOR_SIZE 512
120
121 /*
122 * Timeouts for various operations:
123 */
124 enum {
125 /* spec allows up to 20ms */
126 WAIT_DRQ = HZ / 10, /* 100ms */
127 /* some laptops are very slow */
128 WAIT_READY = 5 * HZ, /* 5s */
129 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
130 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
131 /* worst case when spinning up */
132 WAIT_WORSTCASE = 30 * HZ, /* 30s */
133 /* maximum wait for an IRQ to happen */
134 WAIT_CMD = 10 * HZ, /* 10s */
135 /* Some drives require a longer IRQ timeout. */
136 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
137 /*
138 * Some drives (for example, Seagate STT3401A Travan) require a very
139 * long timeout, because they don't return an interrupt or clear their
140 * BSY bit until after the command completes (even retension commands).
141 */
142 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
143 /* minimum sleep time */
144 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
145 };
146
147 /*
148 * Op codes for special requests to be handled by ide_special_rq().
149 * Values should be in the range of 0x20 to 0x3f.
150 */
151 #define REQ_DRIVE_RESET 0x20
152 #define REQ_DEVSET_EXEC 0x21
153 #define REQ_PARK_HEADS 0x22
154 #define REQ_UNPARK_HEADS 0x23
155
156 /*
157 * Check for an interrupt and acknowledge the interrupt status
158 */
159 struct hwif_s;
160 typedef int (ide_ack_intr_t)(struct hwif_s *);
161
162 /*
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
165 */
166 enum { ide_unknown, ide_generic, ide_pci,
167 ide_cmd640, ide_dtc2278, ide_ali14xx,
168 ide_qd65xx, ide_umc8672, ide_ht6560b,
169 ide_4drives, ide_pmac, ide_acorn,
170 ide_au1xxx, ide_palm3710
171 };
172
173 typedef u8 hwif_chipset_t;
174
175 /*
176 * Structure to hold all information about the location of this port
177 */
178 typedef struct hw_regs_s {
179 union {
180 struct ide_io_ports io_ports;
181 unsigned long io_ports_array[IDE_NR_PORTS];
182 };
183
184 int irq; /* our irq number */
185 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
186 hwif_chipset_t chipset;
187 struct device *dev, *parent;
188 unsigned long config;
189 } hw_regs_t;
190
191 static inline void ide_std_init_ports(hw_regs_t *hw,
192 unsigned long io_addr,
193 unsigned long ctl_addr)
194 {
195 unsigned int i;
196
197 for (i = 0; i <= 7; i++)
198 hw->io_ports_array[i] = io_addr++;
199
200 hw->io_ports.ctl_addr = ctl_addr;
201 }
202
203 #define MAX_HWIFS 10
204
205 /*
206 * Now for the data we need to maintain per-drive: ide_drive_t
207 */
208
209 #define ide_scsi 0x21
210 #define ide_disk 0x20
211 #define ide_optical 0x7
212 #define ide_cdrom 0x5
213 #define ide_tape 0x1
214 #define ide_floppy 0x0
215
216 /*
217 * Special Driver Flags
218 *
219 * set_geometry : respecify drive geometry
220 * recalibrate : seek to cyl 0
221 * set_multmode : set multmode count
222 * reserved : unused
223 */
224 typedef union {
225 unsigned all : 8;
226 struct {
227 unsigned set_geometry : 1;
228 unsigned recalibrate : 1;
229 unsigned set_multmode : 1;
230 unsigned reserved : 5;
231 } b;
232 } special_t;
233
234 /*
235 * Status returned from various ide_ functions
236 */
237 typedef enum {
238 ide_stopped, /* no drive operation was started */
239 ide_started, /* a drive operation was started, handler was set */
240 } ide_startstop_t;
241
242 enum {
243 IDE_VALID_ERROR = (1 << 1),
244 IDE_VALID_FEATURE = IDE_VALID_ERROR,
245 IDE_VALID_NSECT = (1 << 2),
246 IDE_VALID_LBAL = (1 << 3),
247 IDE_VALID_LBAM = (1 << 4),
248 IDE_VALID_LBAH = (1 << 5),
249 IDE_VALID_DEVICE = (1 << 6),
250 IDE_VALID_LBA = IDE_VALID_LBAL |
251 IDE_VALID_LBAM |
252 IDE_VALID_LBAH,
253 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
254 IDE_VALID_NSECT |
255 IDE_VALID_LBA,
256 IDE_VALID_IN_TF = IDE_VALID_NSECT |
257 IDE_VALID_LBA,
258 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
259 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
260 IDE_VALID_NSECT |
261 IDE_VALID_LBA,
262 };
263
264 enum {
265 IDE_TFLAG_LBA48 = (1 << 0),
266 IDE_TFLAG_WRITE = (1 << 1),
267 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
268 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
269 /* force 16-bit I/O operations */
270 IDE_TFLAG_IO_16BIT = (1 << 4),
271 /* struct ide_cmd was allocated using kmalloc() */
272 IDE_TFLAG_DYN = (1 << 5),
273 IDE_TFLAG_FS = (1 << 6),
274 IDE_TFLAG_MULTI_PIO = (1 << 7),
275 };
276
277 enum {
278 IDE_FTFLAG_FLAGGED = (1 << 0),
279 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
280 IDE_FTFLAG_OUT_DATA = (1 << 2),
281 IDE_FTFLAG_IN_DATA = (1 << 3),
282 };
283
284 struct ide_taskfile {
285 u8 data; /* 0: data byte (for TASKFILE ioctl) */
286 union { /* 1: */
287 u8 error; /* read: error */
288 u8 feature; /* write: feature */
289 };
290 u8 nsect; /* 2: number of sectors */
291 u8 lbal; /* 3: LBA low */
292 u8 lbam; /* 4: LBA mid */
293 u8 lbah; /* 5: LBA high */
294 u8 device; /* 6: device select */
295 union { /* 7: */
296 u8 status; /* read: status */
297 u8 command; /* write: command */
298 };
299 };
300
301 struct ide_cmd {
302 struct ide_taskfile tf;
303 struct ide_taskfile hob;
304 struct {
305 struct {
306 u8 tf;
307 u8 hob;
308 } out, in;
309 } valid;
310
311 u8 tf_flags;
312 u8 ftf_flags; /* for TASKFILE ioctl */
313 int protocol;
314
315 int sg_nents; /* number of sg entries */
316 int orig_sg_nents;
317 int sg_dma_direction; /* DMA transfer direction */
318
319 unsigned int nbytes;
320 unsigned int nleft;
321 unsigned int last_xfer_len;
322
323 struct scatterlist *cursg;
324 unsigned int cursg_ofs;
325
326 struct request *rq; /* copy of request */
327 void *special; /* valid_t generally */
328 };
329
330 /* ATAPI packet command flags */
331 enum {
332 /* set when an error is considered normal - no retry (ide-tape) */
333 PC_FLAG_ABORT = (1 << 0),
334 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
335 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
336 PC_FLAG_DMA_OK = (1 << 3),
337 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
338 PC_FLAG_DMA_ERROR = (1 << 5),
339 PC_FLAG_WRITING = (1 << 6),
340 };
341
342 /*
343 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
344 * This is used for several packet commands (not for READ/WRITE commands).
345 */
346 #define IDE_PC_BUFFER_SIZE 64
347 #define ATAPI_WAIT_PC (60 * HZ)
348
349 struct ide_atapi_pc {
350 /* actual packet bytes */
351 u8 c[12];
352 /* incremented on each retry */
353 int retries;
354 int error;
355
356 /* bytes to transfer */
357 int req_xfer;
358 /* bytes actually transferred */
359 int xferred;
360
361 /* data buffer */
362 u8 *buf;
363 /* current buffer position */
364 u8 *cur_pos;
365 int buf_size;
366 /* missing/available data on the current buffer */
367 int b_count;
368
369 /* the corresponding request */
370 struct request *rq;
371
372 unsigned long flags;
373
374 /*
375 * those are more or less driver-specific and some of them are subject
376 * to change/removal later.
377 */
378 u8 pc_buf[IDE_PC_BUFFER_SIZE];
379
380 /* idetape only */
381 struct idetape_bh *bh;
382 char *b_data;
383
384 unsigned long timeout;
385 };
386
387 struct ide_devset;
388 struct ide_driver;
389
390 #ifdef CONFIG_BLK_DEV_IDEACPI
391 struct ide_acpi_drive_link;
392 struct ide_acpi_hwif_link;
393 #endif
394
395 struct ide_drive_s;
396
397 struct ide_disk_ops {
398 int (*check)(struct ide_drive_s *, const char *);
399 int (*get_capacity)(struct ide_drive_s *);
400 void (*setup)(struct ide_drive_s *);
401 void (*flush)(struct ide_drive_s *);
402 int (*init_media)(struct ide_drive_s *, struct gendisk *);
403 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
404 int);
405 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
406 sector_t);
407 int (*ioctl)(struct ide_drive_s *, struct block_device *,
408 fmode_t, unsigned int, unsigned long);
409 };
410
411 /* ATAPI device flags */
412 enum {
413 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
414
415 /* ide-cd */
416 /* Drive cannot eject the disc. */
417 IDE_AFLAG_NO_EJECT = (1 << 1),
418 /* Drive is a pre ATAPI 1.2 drive. */
419 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
420 /* TOC addresses are in BCD. */
421 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
422 /* TOC track numbers are in BCD. */
423 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
424 /* Saved TOC information is current. */
425 IDE_AFLAG_TOC_VALID = (1 << 6),
426 /* We think that the drive door is locked. */
427 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
428 /* SET_CD_SPEED command is unsupported. */
429 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
430 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
431 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
432 IDE_AFLAG_SANYO_3CD = (1 << 11),
433 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
434 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
435 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
436
437 /* ide-floppy */
438 /* Avoid commands not supported in Clik drive */
439 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
440 /* Requires BH algorithm for packets */
441 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
442 /* Supports format progress report */
443 IDE_AFLAG_SRFP = (1 << 17),
444
445 /* ide-tape */
446 IDE_AFLAG_IGNORE_DSC = (1 << 18),
447 /* 0 When the tape position is unknown */
448 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
449 /* Device already opened */
450 IDE_AFLAG_BUSY = (1 << 20),
451 /* Attempt to auto-detect the current user block size */
452 IDE_AFLAG_DETECT_BS = (1 << 21),
453 /* Currently on a filemark */
454 IDE_AFLAG_FILEMARK = (1 << 22),
455 /* 0 = no tape is loaded, so we don't rewind after ejecting */
456 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
457
458 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
459 };
460
461 /* device flags */
462 enum {
463 /* restore settings after device reset */
464 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
465 /* device is using DMA for read/write */
466 IDE_DFLAG_USING_DMA = (1 << 1),
467 /* okay to unmask other IRQs */
468 IDE_DFLAG_UNMASK = (1 << 2),
469 /* don't attempt flushes */
470 IDE_DFLAG_NOFLUSH = (1 << 3),
471 /* DSC overlap */
472 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
473 /* give potential excess bandwidth */
474 IDE_DFLAG_NICE1 = (1 << 5),
475 /* device is physically present */
476 IDE_DFLAG_PRESENT = (1 << 6),
477 /* id read from device (synthetic if not set) */
478 IDE_DFLAG_ID_READ = (1 << 8),
479 IDE_DFLAG_NOPROBE = (1 << 9),
480 /* need to do check_media_change() */
481 IDE_DFLAG_REMOVABLE = (1 << 10),
482 /* needed for removable devices */
483 IDE_DFLAG_ATTACH = (1 << 11),
484 IDE_DFLAG_FORCED_GEOM = (1 << 12),
485 /* disallow setting unmask bit */
486 IDE_DFLAG_NO_UNMASK = (1 << 13),
487 /* disallow enabling 32-bit I/O */
488 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
489 /* for removable only: door lock/unlock works */
490 IDE_DFLAG_DOORLOCKING = (1 << 15),
491 /* disallow DMA */
492 IDE_DFLAG_NODMA = (1 << 16),
493 /* powermanagment told us not to do anything, so sleep nicely */
494 IDE_DFLAG_BLOCKED = (1 << 17),
495 /* sleeping & sleep field valid */
496 IDE_DFLAG_SLEEPING = (1 << 18),
497 IDE_DFLAG_POST_RESET = (1 << 19),
498 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
499 IDE_DFLAG_LBA48 = (1 << 21),
500 /* status of write cache */
501 IDE_DFLAG_WCACHE = (1 << 22),
502 /* used for ignoring ATA_DF */
503 IDE_DFLAG_NOWERR = (1 << 23),
504 /* retrying in PIO */
505 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
506 IDE_DFLAG_LBA = (1 << 25),
507 /* don't unload heads */
508 IDE_DFLAG_NO_UNLOAD = (1 << 26),
509 /* heads unloaded, please don't reset port */
510 IDE_DFLAG_PARKED = (1 << 27),
511 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
512 /* write protect */
513 IDE_DFLAG_WP = (1 << 29),
514 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
515 };
516
517 struct ide_drive_s {
518 char name[4]; /* drive name, such as "hda" */
519 char driver_req[10]; /* requests specific driver */
520
521 struct request_queue *queue; /* request queue */
522
523 struct request *rq; /* current request */
524 void *driver_data; /* extra driver data */
525 u16 *id; /* identification info */
526 #ifdef CONFIG_IDE_PROC_FS
527 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
528 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
529 #endif
530 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
531
532 const struct ide_disk_ops *disk_ops;
533
534 unsigned long dev_flags;
535
536 unsigned long sleep; /* sleep until this time */
537 unsigned long timeout; /* max time to wait for irq */
538
539 special_t special; /* special action flags */
540
541 u8 select; /* basic drive/head select reg value */
542 u8 retry_pio; /* retrying dma capable host in pio */
543 u8 waiting_for_dma; /* dma currently in progress */
544 u8 dma; /* atapi dma flag */
545
546 u8 quirk_list; /* considered quirky, set for a specific host */
547 u8 init_speed; /* transfer rate set at boot */
548 u8 current_speed; /* current transfer rate set */
549 u8 desired_speed; /* desired transfer rate set */
550 u8 dn; /* now wide spread use */
551 u8 acoustic; /* acoustic management */
552 u8 media; /* disk, cdrom, tape, floppy, ... */
553 u8 ready_stat; /* min status value for drive ready */
554 u8 mult_count; /* current multiple sector setting */
555 u8 mult_req; /* requested multiple sector setting */
556 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
557 u8 bad_wstat; /* used for ignoring ATA_DF */
558 u8 head; /* "real" number of heads */
559 u8 sect; /* "real" sectors per track */
560 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
561 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
562
563 /* delay this long before sending packet command */
564 u8 pc_delay;
565
566 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
567 unsigned int cyl; /* "real" number of cyls */
568 unsigned int drive_data; /* used by set_pio_mode/dev_select() */
569 unsigned int failures; /* current failure count */
570 unsigned int max_failures; /* maximum allowed failure count */
571 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
572
573 u64 capacity64; /* total number of sectors */
574
575 int lun; /* logical unit */
576 int crc_count; /* crc counter to reduce drive speed */
577
578 unsigned long debug_mask; /* debugging levels switch */
579
580 #ifdef CONFIG_BLK_DEV_IDEACPI
581 struct ide_acpi_drive_link *acpidata;
582 #endif
583 struct list_head list;
584 struct device gendev;
585 struct completion gendev_rel_comp; /* to deal with device release() */
586
587 /* current packet command */
588 struct ide_atapi_pc *pc;
589
590 /* last failed packet command */
591 struct ide_atapi_pc *failed_pc;
592
593 /* callback for packet commands */
594 int (*pc_callback)(struct ide_drive_s *, int);
595
596 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
597 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
598 unsigned int, int);
599
600 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
601
602 unsigned long atapi_flags;
603
604 struct ide_atapi_pc request_sense_pc;
605 struct request request_sense_rq;
606 };
607
608 typedef struct ide_drive_s ide_drive_t;
609
610 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
611
612 #define to_ide_drv(obj, cont_type) \
613 container_of(obj, struct cont_type, dev)
614
615 #define ide_drv_g(disk, cont_type) \
616 container_of((disk)->private_data, struct cont_type, driver)
617
618 struct ide_port_info;
619
620 struct ide_tp_ops {
621 void (*exec_command)(struct hwif_s *, u8);
622 u8 (*read_status)(struct hwif_s *);
623 u8 (*read_altstatus)(struct hwif_s *);
624 void (*write_devctl)(struct hwif_s *, u8);
625
626 void (*dev_select)(ide_drive_t *);
627 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
628 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
629
630 void (*input_data)(ide_drive_t *, struct ide_cmd *,
631 void *, unsigned int);
632 void (*output_data)(ide_drive_t *, struct ide_cmd *,
633 void *, unsigned int);
634 };
635
636 extern const struct ide_tp_ops default_tp_ops;
637
638 /**
639 * struct ide_port_ops - IDE port operations
640 *
641 * @init_dev: host specific initialization of a device
642 * @set_pio_mode: routine to program host for PIO mode
643 * @set_dma_mode: routine to program host for DMA mode
644 * @reset_poll: chipset polling based on hba specifics
645 * @pre_reset: chipset specific changes to default for device-hba resets
646 * @resetproc: routine to reset controller after a disk reset
647 * @maskproc: special host masking for drive selection
648 * @quirkproc: check host's drive quirk list
649 * @clear_irq: clear IRQ
650 *
651 * @mdma_filter: filter MDMA modes
652 * @udma_filter: filter UDMA modes
653 *
654 * @cable_detect: detect cable type
655 */
656 struct ide_port_ops {
657 void (*init_dev)(ide_drive_t *);
658 void (*set_pio_mode)(ide_drive_t *, const u8);
659 void (*set_dma_mode)(ide_drive_t *, const u8);
660 int (*reset_poll)(ide_drive_t *);
661 void (*pre_reset)(ide_drive_t *);
662 void (*resetproc)(ide_drive_t *);
663 void (*maskproc)(ide_drive_t *, int);
664 void (*quirkproc)(ide_drive_t *);
665 void (*clear_irq)(ide_drive_t *);
666
667 u8 (*mdma_filter)(ide_drive_t *);
668 u8 (*udma_filter)(ide_drive_t *);
669
670 u8 (*cable_detect)(struct hwif_s *);
671 };
672
673 struct ide_dma_ops {
674 void (*dma_host_set)(struct ide_drive_s *, int);
675 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
676 void (*dma_start)(struct ide_drive_s *);
677 int (*dma_end)(struct ide_drive_s *);
678 int (*dma_test_irq)(struct ide_drive_s *);
679 void (*dma_lost_irq)(struct ide_drive_s *);
680 /* below ones are optional */
681 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
682 int (*dma_timer_expiry)(struct ide_drive_s *);
683 void (*dma_clear)(struct ide_drive_s *);
684 /*
685 * The following method is optional and only required to be
686 * implemented for the SFF-8038i compatible controllers.
687 */
688 u8 (*dma_sff_read_status)(struct hwif_s *);
689 };
690
691 struct ide_host;
692
693 typedef struct hwif_s {
694 struct hwif_s *mate; /* other hwif from same PCI chip */
695 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
696
697 struct ide_host *host;
698
699 char name[6]; /* name of interface, eg. "ide0" */
700
701 struct ide_io_ports io_ports;
702
703 unsigned long sata_scr[SATA_NR_PORTS];
704
705 ide_drive_t *devices[MAX_DRIVES + 1];
706
707 u8 major; /* our major number */
708 u8 index; /* 0 for ide0; 1 for ide1; ... */
709 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
710
711 u32 host_flags;
712
713 u8 pio_mask;
714
715 u8 ultra_mask;
716 u8 mwdma_mask;
717 u8 swdma_mask;
718
719 u8 cbl; /* cable type */
720
721 hwif_chipset_t chipset; /* sub-module for tuning.. */
722
723 struct device *dev;
724
725 ide_ack_intr_t *ack_intr;
726
727 void (*rw_disk)(ide_drive_t *, struct request *);
728
729 const struct ide_tp_ops *tp_ops;
730 const struct ide_port_ops *port_ops;
731 const struct ide_dma_ops *dma_ops;
732
733 /* dma physical region descriptor table (cpu view) */
734 unsigned int *dmatable_cpu;
735 /* dma physical region descriptor table (dma view) */
736 dma_addr_t dmatable_dma;
737
738 /* maximum number of PRD table entries */
739 int prd_max_nents;
740 /* PRD entry size in bytes */
741 int prd_ent_size;
742
743 /* Scatter-gather list used to build the above */
744 struct scatterlist *sg_table;
745 int sg_max_nents; /* Maximum number of entries in it */
746
747 struct ide_cmd cmd; /* current command */
748
749 int rqsize; /* max sectors per request */
750 int irq; /* our irq number */
751
752 unsigned long dma_base; /* base addr for dma ports */
753
754 unsigned long config_data; /* for use by chipset-specific code */
755 unsigned long select_data; /* for use by chipset-specific code */
756
757 unsigned long extra_base; /* extra addr for dma ports */
758 unsigned extra_ports; /* number of extra dma ports */
759
760 unsigned present : 1; /* this interface exists */
761 unsigned busy : 1; /* serializes devices on a port */
762
763 struct device gendev;
764 struct device *portdev;
765
766 struct completion gendev_rel_comp; /* To deal with device release() */
767
768 void *hwif_data; /* extra hwif data */
769
770 #ifdef CONFIG_BLK_DEV_IDEACPI
771 struct ide_acpi_hwif_link *acpidata;
772 #endif
773
774 /* IRQ handler, if active */
775 ide_startstop_t (*handler)(ide_drive_t *);
776
777 /* BOOL: polling active & poll_timeout field valid */
778 unsigned int polling : 1;
779
780 /* current drive */
781 ide_drive_t *cur_dev;
782
783 /* current request */
784 struct request *rq;
785
786 /* failsafe timer */
787 struct timer_list timer;
788 /* timeout value during long polls */
789 unsigned long poll_timeout;
790 /* queried upon timeouts */
791 int (*expiry)(ide_drive_t *);
792
793 int req_gen;
794 int req_gen_timer;
795
796 spinlock_t lock;
797 } ____cacheline_internodealigned_in_smp ide_hwif_t;
798
799 #define MAX_HOST_PORTS 4
800
801 struct ide_host {
802 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
803 unsigned int n_ports;
804 struct device *dev[2];
805
806 int (*init_chipset)(struct pci_dev *);
807
808 void (*get_lock)(irq_handler_t, void *);
809 void (*release_lock)(void);
810
811 irq_handler_t irq_handler;
812
813 unsigned long host_flags;
814
815 int irq_flags;
816
817 void *host_priv;
818 ide_hwif_t *cur_port; /* for hosts requiring serialization */
819
820 /* used for hosts requiring serialization */
821 volatile unsigned long host_busy;
822 };
823
824 #define IDE_HOST_BUSY 0
825
826 /*
827 * internal ide interrupt handler type
828 */
829 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
830 typedef int (ide_expiry_t)(ide_drive_t *);
831
832 /* used by ide-cd, ide-floppy, etc. */
833 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
834
835 extern struct mutex ide_setting_mtx;
836
837 /*
838 * configurable drive settings
839 */
840
841 #define DS_SYNC (1 << 0)
842
843 struct ide_devset {
844 int (*get)(ide_drive_t *);
845 int (*set)(ide_drive_t *, int);
846 unsigned int flags;
847 };
848
849 #define __DEVSET(_flags, _get, _set) { \
850 .flags = _flags, \
851 .get = _get, \
852 .set = _set, \
853 }
854
855 #define ide_devset_get(name, field) \
856 static int get_##name(ide_drive_t *drive) \
857 { \
858 return drive->field; \
859 }
860
861 #define ide_devset_set(name, field) \
862 static int set_##name(ide_drive_t *drive, int arg) \
863 { \
864 drive->field = arg; \
865 return 0; \
866 }
867
868 #define ide_devset_get_flag(name, flag) \
869 static int get_##name(ide_drive_t *drive) \
870 { \
871 return !!(drive->dev_flags & flag); \
872 }
873
874 #define ide_devset_set_flag(name, flag) \
875 static int set_##name(ide_drive_t *drive, int arg) \
876 { \
877 if (arg) \
878 drive->dev_flags |= flag; \
879 else \
880 drive->dev_flags &= ~flag; \
881 return 0; \
882 }
883
884 #define __IDE_DEVSET(_name, _flags, _get, _set) \
885 const struct ide_devset ide_devset_##_name = \
886 __DEVSET(_flags, _get, _set)
887
888 #define IDE_DEVSET(_name, _flags, _get, _set) \
889 static __IDE_DEVSET(_name, _flags, _get, _set)
890
891 #define ide_devset_rw(_name, _func) \
892 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
893
894 #define ide_devset_w(_name, _func) \
895 IDE_DEVSET(_name, 0, NULL, set_##_func)
896
897 #define ide_ext_devset_rw(_name, _func) \
898 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
899
900 #define ide_ext_devset_rw_sync(_name, _func) \
901 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
902
903 #define ide_decl_devset(_name) \
904 extern const struct ide_devset ide_devset_##_name
905
906 ide_decl_devset(io_32bit);
907 ide_decl_devset(keepsettings);
908 ide_decl_devset(pio_mode);
909 ide_decl_devset(unmaskirq);
910 ide_decl_devset(using_dma);
911
912 #ifdef CONFIG_IDE_PROC_FS
913 /*
914 * /proc/ide interface
915 */
916
917 #define ide_devset_rw_field(_name, _field) \
918 ide_devset_get(_name, _field); \
919 ide_devset_set(_name, _field); \
920 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
921
922 #define ide_devset_rw_flag(_name, _field) \
923 ide_devset_get_flag(_name, _field); \
924 ide_devset_set_flag(_name, _field); \
925 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
926
927 struct ide_proc_devset {
928 const char *name;
929 const struct ide_devset *setting;
930 int min, max;
931 int (*mulf)(ide_drive_t *);
932 int (*divf)(ide_drive_t *);
933 };
934
935 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
936 .name = __stringify(_name), \
937 .setting = &ide_devset_##_name, \
938 .min = _min, \
939 .max = _max, \
940 .mulf = _mulf, \
941 .divf = _divf, \
942 }
943
944 #define IDE_PROC_DEVSET(_name, _min, _max) \
945 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
946
947 typedef struct {
948 const char *name;
949 mode_t mode;
950 read_proc_t *read_proc;
951 write_proc_t *write_proc;
952 } ide_proc_entry_t;
953
954 void proc_ide_create(void);
955 void proc_ide_destroy(void);
956 void ide_proc_register_port(ide_hwif_t *);
957 void ide_proc_port_register_devices(ide_hwif_t *);
958 void ide_proc_unregister_device(ide_drive_t *);
959 void ide_proc_unregister_port(ide_hwif_t *);
960 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
961 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
962
963 read_proc_t proc_ide_read_capacity;
964 read_proc_t proc_ide_read_geometry;
965
966 /*
967 * Standard exit stuff:
968 */
969 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
970 { \
971 len -= off; \
972 if (len < count) { \
973 *eof = 1; \
974 if (len <= 0) \
975 return 0; \
976 } else \
977 len = count; \
978 *start = page + off; \
979 return len; \
980 }
981 #else
982 static inline void proc_ide_create(void) { ; }
983 static inline void proc_ide_destroy(void) { ; }
984 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
985 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
986 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
987 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
988 static inline void ide_proc_register_driver(ide_drive_t *drive,
989 struct ide_driver *driver) { ; }
990 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
991 struct ide_driver *driver) { ; }
992 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
993 #endif
994
995 enum {
996 /* enter/exit functions */
997 IDE_DBG_FUNC = (1 << 0),
998 /* sense key/asc handling */
999 IDE_DBG_SENSE = (1 << 1),
1000 /* packet commands handling */
1001 IDE_DBG_PC = (1 << 2),
1002 /* request handling */
1003 IDE_DBG_RQ = (1 << 3),
1004 /* driver probing/setup */
1005 IDE_DBG_PROBE = (1 << 4),
1006 };
1007
1008 /* DRV_NAME has to be defined in the driver before using the macro below */
1009 #define __ide_debug_log(lvl, fmt, args...) \
1010 { \
1011 if (unlikely(drive->debug_mask & lvl)) \
1012 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1013 __func__, ## args); \
1014 }
1015
1016 /*
1017 * Power Management state machine (rq->pm->pm_step).
1018 *
1019 * For each step, the core calls ide_start_power_step() first.
1020 * This can return:
1021 * - ide_stopped : In this case, the core calls us back again unless
1022 * step have been set to ide_power_state_completed.
1023 * - ide_started : In this case, the channel is left busy until an
1024 * async event (interrupt) occurs.
1025 * Typically, ide_start_power_step() will issue a taskfile request with
1026 * do_rw_taskfile().
1027 *
1028 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1029 * with the error code if any. This routine should update the step value
1030 * and return. It should not start a new request. The core will call
1031 * ide_start_power_step() for the new step value, unless step have been
1032 * set to IDE_PM_COMPLETED.
1033 */
1034 enum {
1035 IDE_PM_START_SUSPEND,
1036 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1037 IDE_PM_STANDBY,
1038
1039 IDE_PM_START_RESUME,
1040 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1041 IDE_PM_IDLE,
1042 IDE_PM_RESTORE_DMA,
1043
1044 IDE_PM_COMPLETED,
1045 };
1046
1047 int generic_ide_suspend(struct device *, pm_message_t);
1048 int generic_ide_resume(struct device *);
1049
1050 void ide_complete_power_step(ide_drive_t *, struct request *);
1051 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1052 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1053 void ide_check_pm_state(ide_drive_t *, struct request *);
1054
1055 /*
1056 * Subdrivers support.
1057 *
1058 * The gendriver.owner field should be set to the module owner of this driver.
1059 * The gendriver.name field should be set to the name of this driver
1060 */
1061 struct ide_driver {
1062 const char *version;
1063 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1064 struct device_driver gen_driver;
1065 int (*probe)(ide_drive_t *);
1066 void (*remove)(ide_drive_t *);
1067 void (*resume)(ide_drive_t *);
1068 void (*shutdown)(ide_drive_t *);
1069 #ifdef CONFIG_IDE_PROC_FS
1070 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1071 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1072 #endif
1073 };
1074
1075 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1076
1077 int ide_device_get(ide_drive_t *);
1078 void ide_device_put(ide_drive_t *);
1079
1080 struct ide_ioctl_devset {
1081 unsigned int get_ioctl;
1082 unsigned int set_ioctl;
1083 const struct ide_devset *setting;
1084 };
1085
1086 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1087 unsigned long, const struct ide_ioctl_devset *);
1088
1089 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1090
1091 extern int ide_vlb_clk;
1092 extern int ide_pci_clk;
1093
1094 unsigned int ide_rq_bytes(struct request *);
1095 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1096 void ide_kill_rq(ide_drive_t *, struct request *);
1097
1098 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1099 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1100
1101 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1102 unsigned int);
1103
1104 void ide_pad_transfer(ide_drive_t *, int, int);
1105
1106 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1107
1108 void ide_fix_driveid(u16 *);
1109
1110 extern void ide_fixstring(u8 *, const int, const int);
1111
1112 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1113
1114 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1115
1116 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1117 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1118
1119 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1120
1121 extern int ide_devset_execute(ide_drive_t *drive,
1122 const struct ide_devset *setting, int arg);
1123
1124 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1125 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1126
1127 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1128 void ide_tf_dump(const char *, struct ide_cmd *);
1129
1130 void ide_exec_command(ide_hwif_t *, u8);
1131 u8 ide_read_status(ide_hwif_t *);
1132 u8 ide_read_altstatus(ide_hwif_t *);
1133 void ide_write_devctl(ide_hwif_t *, u8);
1134
1135 void ide_dev_select(ide_drive_t *);
1136 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1137 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1138
1139 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1140 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1141
1142 void SELECT_MASK(ide_drive_t *, int);
1143
1144 u8 ide_read_error(ide_drive_t *);
1145 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1146
1147 int ide_check_atapi_device(ide_drive_t *, const char *);
1148
1149 void ide_init_pc(struct ide_atapi_pc *);
1150
1151 /* Disk head parking */
1152 extern wait_queue_head_t ide_park_wq;
1153 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1154 char *buf);
1155 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1156 const char *buf, size_t len);
1157
1158 /*
1159 * Special requests for ide-tape block device strategy routine.
1160 *
1161 * In order to service a character device command, we add special requests to
1162 * the tail of our block device request queue and wait for their completion.
1163 */
1164 enum {
1165 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1166 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1167 REQ_IDETAPE_READ = (1 << 2),
1168 REQ_IDETAPE_WRITE = (1 << 3),
1169 };
1170
1171 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1172
1173 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1174 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1175 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1176 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1177 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1178
1179 int ide_cd_expiry(ide_drive_t *);
1180
1181 int ide_cd_get_xferlen(struct request *);
1182
1183 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1184
1185 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1186
1187 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1188
1189 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1190
1191 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1192 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1193
1194 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1195
1196 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1197
1198 extern int ide_driveid_update(ide_drive_t *);
1199 extern int ide_config_drive_speed(ide_drive_t *, u8);
1200 extern u8 eighty_ninty_three (ide_drive_t *);
1201 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1202
1203 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1204
1205 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1206
1207 extern void ide_timer_expiry(unsigned long);
1208 extern irqreturn_t ide_intr(int irq, void *dev_id);
1209 extern void do_ide_request(struct request_queue *);
1210
1211 void ide_init_disk(struct gendisk *, ide_drive_t *);
1212
1213 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1214 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1215 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1216 #else
1217 #define ide_pci_register_driver(d) pci_register_driver(d)
1218 #endif
1219
1220 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1221 {
1222 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1223 return 1;
1224 return 0;
1225 }
1226
1227 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1228 hw_regs_t *, hw_regs_t **);
1229 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1230
1231 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1232 int ide_pci_set_master(struct pci_dev *, const char *);
1233 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1234 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1235 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1236 #else
1237 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1238 const struct ide_port_info *d)
1239 {
1240 return -EINVAL;
1241 }
1242 #endif
1243
1244 struct ide_pci_enablebit {
1245 u8 reg; /* byte pci reg holding the enable-bit */
1246 u8 mask; /* mask to isolate the enable-bit */
1247 u8 val; /* value of masked reg when "enabled" */
1248 };
1249
1250 enum {
1251 /* Uses ISA control ports not PCI ones. */
1252 IDE_HFLAG_ISA_PORTS = (1 << 0),
1253 /* single port device */
1254 IDE_HFLAG_SINGLE = (1 << 1),
1255 /* don't use legacy PIO blacklist */
1256 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1257 /* set for the second port of QD65xx */
1258 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1259 /* use PIO8/9 for prefetch off/on */
1260 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1261 /* use PIO6/7 for fast-devsel off/on */
1262 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1263 /* use 100-102 and 200-202 PIO values to set DMA modes */
1264 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1265 /*
1266 * keep DMA setting when programming PIO mode, may be used only
1267 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1268 */
1269 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1270 /* program host for the transfer mode after programming device */
1271 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1272 /* don't program host/device for the transfer mode ("smart" hosts) */
1273 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1274 /* trust BIOS for programming chipset/device for DMA */
1275 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1276 /* host is CS5510/CS5520 */
1277 IDE_HFLAG_CS5520 = (1 << 11),
1278 /* ATAPI DMA is unsupported */
1279 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1280 /* set if host is a "non-bootable" controller */
1281 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1282 /* host doesn't support DMA */
1283 IDE_HFLAG_NO_DMA = (1 << 14),
1284 /* check if host is PCI IDE device before allowing DMA */
1285 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1286 /* host uses MMIO */
1287 IDE_HFLAG_MMIO = (1 << 16),
1288 /* no LBA48 */
1289 IDE_HFLAG_NO_LBA48 = (1 << 17),
1290 /* no LBA48 DMA */
1291 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1292 /* data FIFO is cleared by an error */
1293 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1294 /* serialize ports */
1295 IDE_HFLAG_SERIALIZE = (1 << 20),
1296 /* host is DTC2278 */
1297 IDE_HFLAG_DTC2278 = (1 << 21),
1298 /* 4 devices on a single set of I/O ports */
1299 IDE_HFLAG_4DRIVES = (1 << 22),
1300 /* host is TRM290 */
1301 IDE_HFLAG_TRM290 = (1 << 23),
1302 /* use 32-bit I/O ops */
1303 IDE_HFLAG_IO_32BIT = (1 << 24),
1304 /* unmask IRQs */
1305 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1306 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1307 /* serialize ports if DMA is possible (for sl82c105) */
1308 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1309 /* force host out of "simplex" mode */
1310 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1311 /* DSC overlap is unsupported */
1312 IDE_HFLAG_NO_DSC = (1 << 29),
1313 /* never use 32-bit I/O ops */
1314 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1315 /* never unmask IRQs */
1316 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1317 };
1318
1319 #ifdef CONFIG_BLK_DEV_OFFBOARD
1320 # define IDE_HFLAG_OFF_BOARD 0
1321 #else
1322 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1323 #endif
1324
1325 struct ide_port_info {
1326 char *name;
1327
1328 int (*init_chipset)(struct pci_dev *);
1329
1330 void (*get_lock)(irq_handler_t, void *);
1331 void (*release_lock)(void);
1332
1333 void (*init_iops)(ide_hwif_t *);
1334 void (*init_hwif)(ide_hwif_t *);
1335 int (*init_dma)(ide_hwif_t *,
1336 const struct ide_port_info *);
1337
1338 const struct ide_tp_ops *tp_ops;
1339 const struct ide_port_ops *port_ops;
1340 const struct ide_dma_ops *dma_ops;
1341
1342 struct ide_pci_enablebit enablebits[2];
1343
1344 hwif_chipset_t chipset;
1345
1346 u16 max_sectors; /* if < than the default one */
1347
1348 u32 host_flags;
1349
1350 int irq_flags;
1351
1352 u8 pio_mask;
1353 u8 swdma_mask;
1354 u8 mwdma_mask;
1355 u8 udma_mask;
1356 };
1357
1358 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1359 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1360 const struct ide_port_info *, void *);
1361 void ide_pci_remove(struct pci_dev *);
1362
1363 #ifdef CONFIG_PM
1364 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1365 int ide_pci_resume(struct pci_dev *);
1366 #else
1367 #define ide_pci_suspend NULL
1368 #define ide_pci_resume NULL
1369 #endif
1370
1371 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1372 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1373
1374 #define BAD_DMA_DRIVE 0
1375 #define GOOD_DMA_DRIVE 1
1376
1377 struct drive_list_entry {
1378 const char *id_model;
1379 const char *id_firmware;
1380 };
1381
1382 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1383
1384 #ifdef CONFIG_BLK_DEV_IDEDMA
1385 int ide_dma_good_drive(ide_drive_t *);
1386 int __ide_dma_bad_drive(ide_drive_t *);
1387 int ide_id_dma_bug(ide_drive_t *);
1388
1389 u8 ide_find_dma_mode(ide_drive_t *, u8);
1390
1391 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1392 {
1393 return ide_find_dma_mode(drive, XFER_UDMA_6);
1394 }
1395
1396 void ide_dma_off_quietly(ide_drive_t *);
1397 void ide_dma_off(ide_drive_t *);
1398 void ide_dma_on(ide_drive_t *);
1399 int ide_set_dma(ide_drive_t *);
1400 void ide_check_dma_crc(ide_drive_t *);
1401 ide_startstop_t ide_dma_intr(ide_drive_t *);
1402
1403 int ide_allocate_dma_engine(ide_hwif_t *);
1404 void ide_release_dma_engine(ide_hwif_t *);
1405
1406 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1407 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1408
1409 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1410 int config_drive_for_dma(ide_drive_t *);
1411 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1412 void ide_dma_host_set(ide_drive_t *, int);
1413 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1414 extern void ide_dma_start(ide_drive_t *);
1415 int ide_dma_end(ide_drive_t *);
1416 int ide_dma_test_irq(ide_drive_t *);
1417 int ide_dma_sff_timer_expiry(ide_drive_t *);
1418 u8 ide_dma_sff_read_status(ide_hwif_t *);
1419 extern const struct ide_dma_ops sff_dma_ops;
1420 #else
1421 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1422 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1423
1424 void ide_dma_lost_irq(ide_drive_t *);
1425 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1426
1427 #else
1428 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1429 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1430 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1431 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1432 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1433 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1434 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1435 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1436 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1437 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1438 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1439 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1440 static inline int ide_dma_prepare(ide_drive_t *drive,
1441 struct ide_cmd *cmd) { return 1; }
1442 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1443 struct ide_cmd *cmd) { ; }
1444 #endif /* CONFIG_BLK_DEV_IDEDMA */
1445
1446 #ifdef CONFIG_BLK_DEV_IDEACPI
1447 int ide_acpi_init(void);
1448 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1449 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1450 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1451 void ide_acpi_init_port(ide_hwif_t *);
1452 void ide_acpi_port_init_devices(ide_hwif_t *);
1453 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1454 #else
1455 static inline int ide_acpi_init(void) { return 0; }
1456 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1457 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1458 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1459 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1460 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1461 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1462 #endif
1463
1464 void ide_register_region(struct gendisk *);
1465 void ide_unregister_region(struct gendisk *);
1466
1467 void ide_undecoded_slave(ide_drive_t *);
1468
1469 void ide_port_apply_params(ide_hwif_t *);
1470 int ide_sysfs_register_port(ide_hwif_t *);
1471
1472 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1473 void ide_host_free(struct ide_host *);
1474 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1475 hw_regs_t **);
1476 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1477 struct ide_host **);
1478 void ide_host_remove(struct ide_host *);
1479 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1480 void ide_port_unregister_devices(ide_hwif_t *);
1481 void ide_port_scan(ide_hwif_t *);
1482
1483 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1484 {
1485 return hwif->hwif_data;
1486 }
1487
1488 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1489 {
1490 hwif->hwif_data = data;
1491 }
1492
1493 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1494
1495 u64 ide_get_lba_addr(struct ide_cmd *, int);
1496 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1497
1498 struct ide_timing {
1499 u8 mode;
1500 u8 setup; /* t1 */
1501 u16 act8b; /* t2 for 8-bit io */
1502 u16 rec8b; /* t2i for 8-bit io */
1503 u16 cyc8b; /* t0 for 8-bit io */
1504 u16 active; /* t2 or tD */
1505 u16 recover; /* t2i or tK */
1506 u16 cycle; /* t0 */
1507 u16 udma; /* t2CYCTYP/2 */
1508 };
1509
1510 enum {
1511 IDE_TIMING_SETUP = (1 << 0),
1512 IDE_TIMING_ACT8B = (1 << 1),
1513 IDE_TIMING_REC8B = (1 << 2),
1514 IDE_TIMING_CYC8B = (1 << 3),
1515 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1516 IDE_TIMING_CYC8B,
1517 IDE_TIMING_ACTIVE = (1 << 4),
1518 IDE_TIMING_RECOVER = (1 << 5),
1519 IDE_TIMING_CYCLE = (1 << 6),
1520 IDE_TIMING_UDMA = (1 << 7),
1521 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1522 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1523 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1524 };
1525
1526 struct ide_timing *ide_timing_find_mode(u8);
1527 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1528 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1529 struct ide_timing *, unsigned int);
1530 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1531
1532 #ifdef CONFIG_IDE_XFER_MODE
1533 int ide_scan_pio_blacklist(char *);
1534 const char *ide_xfer_verbose(u8);
1535 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1536 int ide_set_pio_mode(ide_drive_t *, u8);
1537 int ide_set_dma_mode(ide_drive_t *, u8);
1538 void ide_set_pio(ide_drive_t *, u8);
1539 int ide_set_xfer_rate(ide_drive_t *, u8);
1540 #else
1541 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1542 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1543 #endif
1544
1545 static inline void ide_set_max_pio(ide_drive_t *drive)
1546 {
1547 ide_set_pio(drive, 255);
1548 }
1549
1550 char *ide_media_string(ide_drive_t *);
1551
1552 extern struct device_attribute ide_dev_attrs[];
1553 extern struct bus_type ide_bus_type;
1554 extern struct class *ide_port_class;
1555
1556 static inline void ide_dump_identify(u8 *id)
1557 {
1558 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1559 }
1560
1561 static inline int hwif_to_node(ide_hwif_t *hwif)
1562 {
1563 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1564 }
1565
1566 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1567 {
1568 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1569
1570 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1571 }
1572
1573 #define ide_port_for_each_dev(i, dev, port) \
1574 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1575
1576 #define ide_port_for_each_present_dev(i, dev, port) \
1577 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1578 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1579
1580 #define ide_host_for_each_port(i, port, host) \
1581 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1582
1583 #endif /* _IDE_H */
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