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xtensa: fix high memory/reserved memory collision
[cris-mirror.git] / include / linux / ide.h
blob771989d25ef882fd91cec3744e605eea1e96cbd5
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _IDE_H
3 #define _IDE_H
4 /*
5 * linux/include/linux/ide.h
6 *
7 * Copyright (C) 1994-2002 Linus Torvalds & authors
8 */
9
10 #include <linux/init.h>
11 #include <linux/ioport.h>
12 #include <linux/ata.h>
13 #include <linux/blkdev.h>
14 #include <linux/proc_fs.h>
15 #include <linux/interrupt.h>
16 #include <linux/bitops.h>
17 #include <linux/bio.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
20 #include <linux/pm.h>
21 #include <linux/mutex.h>
22 /* for request_sense */
23 #include <linux/cdrom.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <asm/byteorder.h>
26 #include <asm/io.h>
27
28 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
29 # define SUPPORT_VLB_SYNC 0
30 #else
31 # define SUPPORT_VLB_SYNC 1
32 #endif
33
34 /*
35 * Probably not wise to fiddle with these
36 */
37 #define IDE_DEFAULT_MAX_FAILURES 1
38 #define ERROR_MAX 8 /* Max read/write errors per sector */
39 #define ERROR_RESET 3 /* Reset controller every 4th retry */
40 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
41
42 struct device;
43
44 /* values for ide_request.type */
45 enum ata_priv_type {
46 ATA_PRIV_MISC,
47 ATA_PRIV_TASKFILE,
48 ATA_PRIV_PC,
49 ATA_PRIV_SENSE, /* sense request */
50 ATA_PRIV_PM_SUSPEND, /* suspend request */
51 ATA_PRIV_PM_RESUME, /* resume request */
52 };
53
54 struct ide_request {
55 struct scsi_request sreq;
56 u8 sense[SCSI_SENSE_BUFFERSIZE];
57 u8 type;
58 };
59
60 static inline struct ide_request *ide_req(struct request *rq)
61 {
62 return blk_mq_rq_to_pdu(rq);
63 }
64
65 static inline bool ata_misc_request(struct request *rq)
66 {
67 return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_MISC;
68 }
69
70 static inline bool ata_taskfile_request(struct request *rq)
71 {
72 return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_TASKFILE;
73 }
74
75 static inline bool ata_pc_request(struct request *rq)
76 {
77 return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_PC;
78 }
79
80 static inline bool ata_sense_request(struct request *rq)
81 {
82 return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_SENSE;
83 }
84
85 static inline bool ata_pm_request(struct request *rq)
86 {
87 return blk_rq_is_private(rq) &&
88 (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
89 ide_req(rq)->type == ATA_PRIV_PM_RESUME);
90 }
91
92 /* Error codes returned in result to the higher part of the driver. */
93 enum {
94 IDE_DRV_ERROR_GENERAL = 101,
95 IDE_DRV_ERROR_FILEMARK = 102,
96 IDE_DRV_ERROR_EOD = 103,
97 };
98
99 /*
100 * Definitions for accessing IDE controller registers
101 */
102 #define IDE_NR_PORTS (10)
103
104 struct ide_io_ports {
105 unsigned long data_addr;
106
107 union {
108 unsigned long error_addr; /* read: error */
109 unsigned long feature_addr; /* write: feature */
110 };
111
112 unsigned long nsect_addr;
113 unsigned long lbal_addr;
114 unsigned long lbam_addr;
115 unsigned long lbah_addr;
116
117 unsigned long device_addr;
118
119 union {
120 unsigned long status_addr; /*  read: status  */
121 unsigned long command_addr; /* write: command */
122 };
123
124 unsigned long ctl_addr;
125
126 unsigned long irq_addr;
127 };
128
129 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
130
131 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
132 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
133 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
134 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
135
136 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
137
138 #define SATA_NR_PORTS (3) /* 16 possible ?? */
139
140 #define SATA_STATUS_OFFSET (0)
141 #define SATA_ERROR_OFFSET (1)
142 #define SATA_CONTROL_OFFSET (2)
143
144 /*
145 * Our Physical Region Descriptor (PRD) table should be large enough
146 * to handle the biggest I/O request we are likely to see. Since requests
147 * can have no more than 256 sectors, and since the typical blocksize is
148 * two or more sectors, we could get by with a limit of 128 entries here for
149 * the usual worst case. Most requests seem to include some contiguous blocks,
150 * further reducing the number of table entries required.
151 *
152 * The driver reverts to PIO mode for individual requests that exceed
153 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
154 * 100% of all crazy scenarios here is not necessary.
155 *
156 * As it turns out though, we must allocate a full 4KB page for this,
157 * so the two PRD tables (ide0 & ide1) will each get half of that,
158 * allowing each to have about 256 entries (8 bytes each) from this.
159 */
160 #define PRD_BYTES 8
161 #define PRD_ENTRIES 256
162
163 /*
164 * Some more useful definitions
165 */
166 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
167 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
168 #define SECTOR_SIZE 512
169
170 /*
171 * Timeouts for various operations:
172 */
173 enum {
174 /* spec allows up to 20ms, but CF cards and SSD drives need more */
175 WAIT_DRQ = 1 * HZ, /* 1s */
176 /* some laptops are very slow */
177 WAIT_READY = 5 * HZ, /* 5s */
178 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
179 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
180 /* worst case when spinning up */
181 WAIT_WORSTCASE = 30 * HZ, /* 30s */
182 /* maximum wait for an IRQ to happen */
183 WAIT_CMD = 10 * HZ, /* 10s */
184 /* Some drives require a longer IRQ timeout. */
185 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
186 /*
187 * Some drives (for example, Seagate STT3401A Travan) require a very
188 * long timeout, because they don't return an interrupt or clear their
189 * BSY bit until after the command completes (even retension commands).
190 */
191 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
192 /* minimum sleep time */
193 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
194 };
195
196 /*
197 * Op codes for special requests to be handled by ide_special_rq().
198 * Values should be in the range of 0x20 to 0x3f.
199 */
200 #define REQ_DRIVE_RESET 0x20
201 #define REQ_DEVSET_EXEC 0x21
202 #define REQ_PARK_HEADS 0x22
203 #define REQ_UNPARK_HEADS 0x23
204
205 /*
206 * hwif_chipset_t is used to keep track of the specific hardware
207 * chipset used by each IDE interface, if known.
208 */
209 enum { ide_unknown, ide_generic, ide_pci,
210 ide_cmd640, ide_dtc2278, ide_ali14xx,
211 ide_qd65xx, ide_umc8672, ide_ht6560b,
212 ide_4drives, ide_pmac, ide_acorn,
213 ide_au1xxx, ide_palm3710
214 };
215
216 typedef u8 hwif_chipset_t;
217
218 /*
219 * Structure to hold all information about the location of this port
220 */
221 struct ide_hw {
222 union {
223 struct ide_io_ports io_ports;
224 unsigned long io_ports_array[IDE_NR_PORTS];
225 };
226
227 int irq; /* our irq number */
228 struct device *dev, *parent;
229 unsigned long config;
230 };
231
232 static inline void ide_std_init_ports(struct ide_hw *hw,
233 unsigned long io_addr,
234 unsigned long ctl_addr)
235 {
236 unsigned int i;
237
238 for (i = 0; i <= 7; i++)
239 hw->io_ports_array[i] = io_addr++;
240
241 hw->io_ports.ctl_addr = ctl_addr;
242 }
243
244 #define MAX_HWIFS 10
245
246 /*
247 * Now for the data we need to maintain per-drive: ide_drive_t
248 */
249
250 #define ide_scsi 0x21
251 #define ide_disk 0x20
252 #define ide_optical 0x7
253 #define ide_cdrom 0x5
254 #define ide_tape 0x1
255 #define ide_floppy 0x0
256
257 /*
258 * Special Driver Flags
259 */
260 enum {
261 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
262 IDE_SFLAG_RECALIBRATE = (1 << 1),
263 IDE_SFLAG_SET_MULTMODE = (1 << 2),
264 };
265
266 /*
267 * Status returned from various ide_ functions
268 */
269 typedef enum {
270 ide_stopped, /* no drive operation was started */
271 ide_started, /* a drive operation was started, handler was set */
272 } ide_startstop_t;
273
274 enum {
275 IDE_VALID_ERROR = (1 << 1),
276 IDE_VALID_FEATURE = IDE_VALID_ERROR,
277 IDE_VALID_NSECT = (1 << 2),
278 IDE_VALID_LBAL = (1 << 3),
279 IDE_VALID_LBAM = (1 << 4),
280 IDE_VALID_LBAH = (1 << 5),
281 IDE_VALID_DEVICE = (1 << 6),
282 IDE_VALID_LBA = IDE_VALID_LBAL |
283 IDE_VALID_LBAM |
284 IDE_VALID_LBAH,
285 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
286 IDE_VALID_NSECT |
287 IDE_VALID_LBA,
288 IDE_VALID_IN_TF = IDE_VALID_NSECT |
289 IDE_VALID_LBA,
290 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
291 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
292 IDE_VALID_NSECT |
293 IDE_VALID_LBA,
294 };
295
296 enum {
297 IDE_TFLAG_LBA48 = (1 << 0),
298 IDE_TFLAG_WRITE = (1 << 1),
299 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
300 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
301 /* force 16-bit I/O operations */
302 IDE_TFLAG_IO_16BIT = (1 << 4),
303 /* struct ide_cmd was allocated using kmalloc() */
304 IDE_TFLAG_DYN = (1 << 5),
305 IDE_TFLAG_FS = (1 << 6),
306 IDE_TFLAG_MULTI_PIO = (1 << 7),
307 IDE_TFLAG_SET_XFER = (1 << 8),
308 };
309
310 enum {
311 IDE_FTFLAG_FLAGGED = (1 << 0),
312 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
313 IDE_FTFLAG_OUT_DATA = (1 << 2),
314 IDE_FTFLAG_IN_DATA = (1 << 3),
315 };
316
317 struct ide_taskfile {
318 u8 data; /* 0: data byte (for TASKFILE ioctl) */
319 union { /* 1: */
320 u8 error; /* read: error */
321 u8 feature; /* write: feature */
322 };
323 u8 nsect; /* 2: number of sectors */
324 u8 lbal; /* 3: LBA low */
325 u8 lbam; /* 4: LBA mid */
326 u8 lbah; /* 5: LBA high */
327 u8 device; /* 6: device select */
328 union { /* 7: */
329 u8 status; /* read: status */
330 u8 command; /* write: command */
331 };
332 };
333
334 struct ide_cmd {
335 struct ide_taskfile tf;
336 struct ide_taskfile hob;
337 struct {
338 struct {
339 u8 tf;
340 u8 hob;
341 } out, in;
342 } valid;
343
344 u16 tf_flags;
345 u8 ftf_flags; /* for TASKFILE ioctl */
346 int protocol;
347
348 int sg_nents; /* number of sg entries */
349 int orig_sg_nents;
350 int sg_dma_direction; /* DMA transfer direction */
351
352 unsigned int nbytes;
353 unsigned int nleft;
354 unsigned int last_xfer_len;
355
356 struct scatterlist *cursg;
357 unsigned int cursg_ofs;
358
359 struct request *rq; /* copy of request */
360 };
361
362 /* ATAPI packet command flags */
363 enum {
364 /* set when an error is considered normal - no retry (ide-tape) */
365 PC_FLAG_ABORT = (1 << 0),
366 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
367 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
368 PC_FLAG_DMA_OK = (1 << 3),
369 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
370 PC_FLAG_DMA_ERROR = (1 << 5),
371 PC_FLAG_WRITING = (1 << 6),
372 };
373
374 #define ATAPI_WAIT_PC (60 * HZ)
375
376 struct ide_atapi_pc {
377 /* actual packet bytes */
378 u8 c[12];
379 /* incremented on each retry */
380 int retries;
381 int error;
382
383 /* bytes to transfer */
384 int req_xfer;
385
386 /* the corresponding request */
387 struct request *rq;
388
389 unsigned long flags;
390
391 /*
392 * those are more or less driver-specific and some of them are subject
393 * to change/removal later.
394 */
395 unsigned long timeout;
396 };
397
398 struct ide_devset;
399 struct ide_driver;
400
401 #ifdef CONFIG_BLK_DEV_IDEACPI
402 struct ide_acpi_drive_link;
403 struct ide_acpi_hwif_link;
404 #endif
405
406 struct ide_drive_s;
407
408 struct ide_disk_ops {
409 int (*check)(struct ide_drive_s *, const char *);
410 int (*get_capacity)(struct ide_drive_s *);
411 void (*unlock_native_capacity)(struct ide_drive_s *);
412 void (*setup)(struct ide_drive_s *);
413 void (*flush)(struct ide_drive_s *);
414 int (*init_media)(struct ide_drive_s *, struct gendisk *);
415 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
416 int);
417 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
418 sector_t);
419 int (*ioctl)(struct ide_drive_s *, struct block_device *,
420 fmode_t, unsigned int, unsigned long);
421 };
422
423 /* ATAPI device flags */
424 enum {
425 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
426
427 /* ide-cd */
428 /* Drive cannot eject the disc. */
429 IDE_AFLAG_NO_EJECT = (1 << 1),
430 /* Drive is a pre ATAPI 1.2 drive. */
431 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
432 /* TOC addresses are in BCD. */
433 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
434 /* TOC track numbers are in BCD. */
435 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
436 /* Saved TOC information is current. */
437 IDE_AFLAG_TOC_VALID = (1 << 6),
438 /* We think that the drive door is locked. */
439 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
440 /* SET_CD_SPEED command is unsupported. */
441 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
442 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
443 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
444 IDE_AFLAG_SANYO_3CD = (1 << 11),
445 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
446 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
447 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
448
449 /* ide-floppy */
450 /* Avoid commands not supported in Clik drive */
451 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
452 /* Requires BH algorithm for packets */
453 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
454 /* Supports format progress report */
455 IDE_AFLAG_SRFP = (1 << 17),
456
457 /* ide-tape */
458 IDE_AFLAG_IGNORE_DSC = (1 << 18),
459 /* 0 When the tape position is unknown */
460 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
461 /* Device already opened */
462 IDE_AFLAG_BUSY = (1 << 20),
463 /* Attempt to auto-detect the current user block size */
464 IDE_AFLAG_DETECT_BS = (1 << 21),
465 /* Currently on a filemark */
466 IDE_AFLAG_FILEMARK = (1 << 22),
467 /* 0 = no tape is loaded, so we don't rewind after ejecting */
468 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
469
470 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
471 };
472
473 /* device flags */
474 enum {
475 /* restore settings after device reset */
476 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
477 /* device is using DMA for read/write */
478 IDE_DFLAG_USING_DMA = (1 << 1),
479 /* okay to unmask other IRQs */
480 IDE_DFLAG_UNMASK = (1 << 2),
481 /* don't attempt flushes */
482 IDE_DFLAG_NOFLUSH = (1 << 3),
483 /* DSC overlap */
484 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
485 /* give potential excess bandwidth */
486 IDE_DFLAG_NICE1 = (1 << 5),
487 /* device is physically present */
488 IDE_DFLAG_PRESENT = (1 << 6),
489 /* disable Host Protected Area */
490 IDE_DFLAG_NOHPA = (1 << 7),
491 /* id read from device (synthetic if not set) */
492 IDE_DFLAG_ID_READ = (1 << 8),
493 IDE_DFLAG_NOPROBE = (1 << 9),
494 /* need to do check_media_change() */
495 IDE_DFLAG_REMOVABLE = (1 << 10),
496 /* needed for removable devices */
497 IDE_DFLAG_ATTACH = (1 << 11),
498 IDE_DFLAG_FORCED_GEOM = (1 << 12),
499 /* disallow setting unmask bit */
500 IDE_DFLAG_NO_UNMASK = (1 << 13),
501 /* disallow enabling 32-bit I/O */
502 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
503 /* for removable only: door lock/unlock works */
504 IDE_DFLAG_DOORLOCKING = (1 << 15),
505 /* disallow DMA */
506 IDE_DFLAG_NODMA = (1 << 16),
507 /* powermanagement told us not to do anything, so sleep nicely */
508 IDE_DFLAG_BLOCKED = (1 << 17),
509 /* sleeping & sleep field valid */
510 IDE_DFLAG_SLEEPING = (1 << 18),
511 IDE_DFLAG_POST_RESET = (1 << 19),
512 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
513 IDE_DFLAG_LBA48 = (1 << 21),
514 /* status of write cache */
515 IDE_DFLAG_WCACHE = (1 << 22),
516 /* used for ignoring ATA_DF */
517 IDE_DFLAG_NOWERR = (1 << 23),
518 /* retrying in PIO */
519 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
520 IDE_DFLAG_LBA = (1 << 25),
521 /* don't unload heads */
522 IDE_DFLAG_NO_UNLOAD = (1 << 26),
523 /* heads unloaded, please don't reset port */
524 IDE_DFLAG_PARKED = (1 << 27),
525 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
526 /* write protect */
527 IDE_DFLAG_WP = (1 << 29),
528 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
529 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
530 };
531
532 struct ide_drive_s {
533 char name[4]; /* drive name, such as "hda" */
534 char driver_req[10]; /* requests specific driver */
535
536 struct request_queue *queue; /* request queue */
537
538 struct request *rq; /* current request */
539 void *driver_data; /* extra driver data */
540 u16 *id; /* identification info */
541 #ifdef CONFIG_IDE_PROC_FS
542 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
543 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
544 #endif
545 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
546
547 const struct ide_disk_ops *disk_ops;
548
549 unsigned long dev_flags;
550
551 unsigned long sleep; /* sleep until this time */
552 unsigned long timeout; /* max time to wait for irq */
553
554 u8 special_flags; /* special action flags */
555
556 u8 select; /* basic drive/head select reg value */
557 u8 retry_pio; /* retrying dma capable host in pio */
558 u8 waiting_for_dma; /* dma currently in progress */
559 u8 dma; /* atapi dma flag */
560
561 u8 init_speed; /* transfer rate set at boot */
562 u8 current_speed; /* current transfer rate set */
563 u8 desired_speed; /* desired transfer rate set */
564 u8 pio_mode; /* for ->set_pio_mode _only_ */
565 u8 dma_mode; /* for ->set_dma_mode _only_ */
566 u8 dn; /* now wide spread use */
567 u8 acoustic; /* acoustic management */
568 u8 media; /* disk, cdrom, tape, floppy, ... */
569 u8 ready_stat; /* min status value for drive ready */
570 u8 mult_count; /* current multiple sector setting */
571 u8 mult_req; /* requested multiple sector setting */
572 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
573 u8 bad_wstat; /* used for ignoring ATA_DF */
574 u8 head; /* "real" number of heads */
575 u8 sect; /* "real" sectors per track */
576 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
577 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
578
579 /* delay this long before sending packet command */
580 u8 pc_delay;
581
582 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
583 unsigned int cyl; /* "real" number of cyls */
584 void *drive_data; /* used by set_pio_mode/dev_select() */
585 unsigned int failures; /* current failure count */
586 unsigned int max_failures; /* maximum allowed failure count */
587 u64 probed_capacity;/* initial/native media capacity */
588 u64 capacity64; /* total number of sectors */
589
590 int lun; /* logical unit */
591 int crc_count; /* crc counter to reduce drive speed */
592
593 unsigned long debug_mask; /* debugging levels switch */
594
595 #ifdef CONFIG_BLK_DEV_IDEACPI
596 struct ide_acpi_drive_link *acpidata;
597 #endif
598 struct list_head list;
599 struct device gendev;
600 struct completion gendev_rel_comp; /* to deal with device release() */
601
602 /* current packet command */
603 struct ide_atapi_pc *pc;
604
605 /* last failed packet command */
606 struct ide_atapi_pc *failed_pc;
607
608 /* callback for packet commands */
609 int (*pc_callback)(struct ide_drive_s *, int);
610
611 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
612
613 unsigned long atapi_flags;
614
615 struct ide_atapi_pc request_sense_pc;
616
617 /* current sense rq and buffer */
618 bool sense_rq_armed;
619 struct request *sense_rq;
620 struct request_sense sense_data;
621 };
622
623 typedef struct ide_drive_s ide_drive_t;
624
625 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
626
627 #define to_ide_drv(obj, cont_type) \
628 container_of(obj, struct cont_type, dev)
629
630 #define ide_drv_g(disk, cont_type) \
631 container_of((disk)->private_data, struct cont_type, driver)
632
633 struct ide_port_info;
634
635 struct ide_tp_ops {
636 void (*exec_command)(struct hwif_s *, u8);
637 u8 (*read_status)(struct hwif_s *);
638 u8 (*read_altstatus)(struct hwif_s *);
639 void (*write_devctl)(struct hwif_s *, u8);
640
641 void (*dev_select)(ide_drive_t *);
642 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
643 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
644
645 void (*input_data)(ide_drive_t *, struct ide_cmd *,
646 void *, unsigned int);
647 void (*output_data)(ide_drive_t *, struct ide_cmd *,
648 void *, unsigned int);
649 };
650
651 extern const struct ide_tp_ops default_tp_ops;
652
653 /**
654 * struct ide_port_ops - IDE port operations
655 *
656 * @init_dev: host specific initialization of a device
657 * @set_pio_mode: routine to program host for PIO mode
658 * @set_dma_mode: routine to program host for DMA mode
659 * @reset_poll: chipset polling based on hba specifics
660 * @pre_reset: chipset specific changes to default for device-hba resets
661 * @resetproc: routine to reset controller after a disk reset
662 * @maskproc: special host masking for drive selection
663 * @quirkproc: check host's drive quirk list
664 * @clear_irq: clear IRQ
665 *
666 * @mdma_filter: filter MDMA modes
667 * @udma_filter: filter UDMA modes
668 *
669 * @cable_detect: detect cable type
670 */
671 struct ide_port_ops {
672 void (*init_dev)(ide_drive_t *);
673 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
674 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
675 blk_status_t (*reset_poll)(ide_drive_t *);
676 void (*pre_reset)(ide_drive_t *);
677 void (*resetproc)(ide_drive_t *);
678 void (*maskproc)(ide_drive_t *, int);
679 void (*quirkproc)(ide_drive_t *);
680 void (*clear_irq)(ide_drive_t *);
681 int (*test_irq)(struct hwif_s *);
682
683 u8 (*mdma_filter)(ide_drive_t *);
684 u8 (*udma_filter)(ide_drive_t *);
685
686 u8 (*cable_detect)(struct hwif_s *);
687 };
688
689 struct ide_dma_ops {
690 void (*dma_host_set)(struct ide_drive_s *, int);
691 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
692 void (*dma_start)(struct ide_drive_s *);
693 int (*dma_end)(struct ide_drive_s *);
694 int (*dma_test_irq)(struct ide_drive_s *);
695 void (*dma_lost_irq)(struct ide_drive_s *);
696 /* below ones are optional */
697 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
698 int (*dma_timer_expiry)(struct ide_drive_s *);
699 void (*dma_clear)(struct ide_drive_s *);
700 /*
701 * The following method is optional and only required to be
702 * implemented for the SFF-8038i compatible controllers.
703 */
704 u8 (*dma_sff_read_status)(struct hwif_s *);
705 };
706
707 enum {
708 IDE_PFLAG_PROBING = (1 << 0),
709 };
710
711 struct ide_host;
712
713 typedef struct hwif_s {
714 struct hwif_s *mate; /* other hwif from same PCI chip */
715 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
716
717 struct ide_host *host;
718
719 char name[6]; /* name of interface, eg. "ide0" */
720
721 struct ide_io_ports io_ports;
722
723 unsigned long sata_scr[SATA_NR_PORTS];
724
725 ide_drive_t *devices[MAX_DRIVES + 1];
726
727 unsigned long port_flags;
728
729 u8 major; /* our major number */
730 u8 index; /* 0 for ide0; 1 for ide1; ... */
731 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
732
733 u32 host_flags;
734
735 u8 pio_mask;
736
737 u8 ultra_mask;
738 u8 mwdma_mask;
739 u8 swdma_mask;
740
741 u8 cbl; /* cable type */
742
743 hwif_chipset_t chipset; /* sub-module for tuning.. */
744
745 struct device *dev;
746
747 void (*rw_disk)(ide_drive_t *, struct request *);
748
749 const struct ide_tp_ops *tp_ops;
750 const struct ide_port_ops *port_ops;
751 const struct ide_dma_ops *dma_ops;
752
753 /* dma physical region descriptor table (cpu view) */
754 unsigned int *dmatable_cpu;
755 /* dma physical region descriptor table (dma view) */
756 dma_addr_t dmatable_dma;
757
758 /* maximum number of PRD table entries */
759 int prd_max_nents;
760 /* PRD entry size in bytes */
761 int prd_ent_size;
762
763 /* Scatter-gather list used to build the above */
764 struct scatterlist *sg_table;
765 int sg_max_nents; /* Maximum number of entries in it */
766
767 struct ide_cmd cmd; /* current command */
768
769 int rqsize; /* max sectors per request */
770 int irq; /* our irq number */
771
772 unsigned long dma_base; /* base addr for dma ports */
773
774 unsigned long config_data; /* for use by chipset-specific code */
775 unsigned long select_data; /* for use by chipset-specific code */
776
777 unsigned long extra_base; /* extra addr for dma ports */
778 unsigned extra_ports; /* number of extra dma ports */
779
780 unsigned present : 1; /* this interface exists */
781 unsigned busy : 1; /* serializes devices on a port */
782
783 struct device gendev;
784 struct device *portdev;
785
786 struct completion gendev_rel_comp; /* To deal with device release() */
787
788 void *hwif_data; /* extra hwif data */
789
790 #ifdef CONFIG_BLK_DEV_IDEACPI
791 struct ide_acpi_hwif_link *acpidata;
792 #endif
793
794 /* IRQ handler, if active */
795 ide_startstop_t (*handler)(ide_drive_t *);
796
797 /* BOOL: polling active & poll_timeout field valid */
798 unsigned int polling : 1;
799
800 /* current drive */
801 ide_drive_t *cur_dev;
802
803 /* current request */
804 struct request *rq;
805
806 /* failsafe timer */
807 struct timer_list timer;
808 /* timeout value during long polls */
809 unsigned long poll_timeout;
810 /* queried upon timeouts */
811 int (*expiry)(ide_drive_t *);
812
813 int req_gen;
814 int req_gen_timer;
815
816 spinlock_t lock;
817 } ____cacheline_internodealigned_in_smp ide_hwif_t;
818
819 #define MAX_HOST_PORTS 4
820
821 struct ide_host {
822 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
823 unsigned int n_ports;
824 struct device *dev[2];
825
826 int (*init_chipset)(struct pci_dev *);
827
828 void (*get_lock)(irq_handler_t, void *);
829 void (*release_lock)(void);
830
831 irq_handler_t irq_handler;
832
833 unsigned long host_flags;
834
835 int irq_flags;
836
837 void *host_priv;
838 ide_hwif_t *cur_port; /* for hosts requiring serialization */
839
840 /* used for hosts requiring serialization */
841 volatile unsigned long host_busy;
842 };
843
844 #define IDE_HOST_BUSY 0
845
846 /*
847 * internal ide interrupt handler type
848 */
849 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
850 typedef int (ide_expiry_t)(ide_drive_t *);
851
852 /* used by ide-cd, ide-floppy, etc. */
853 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
854
855 extern struct mutex ide_setting_mtx;
856
857 /*
858 * configurable drive settings
859 */
860
861 #define DS_SYNC (1 << 0)
862
863 struct ide_devset {
864 int (*get)(ide_drive_t *);
865 int (*set)(ide_drive_t *, int);
866 unsigned int flags;
867 };
868
869 #define __DEVSET(_flags, _get, _set) { \
870 .flags = _flags, \
871 .get = _get, \
872 .set = _set, \
873 }
874
875 #define ide_devset_get(name, field) \
876 static int get_##name(ide_drive_t *drive) \
877 { \
878 return drive->field; \
879 }
880
881 #define ide_devset_set(name, field) \
882 static int set_##name(ide_drive_t *drive, int arg) \
883 { \
884 drive->field = arg; \
885 return 0; \
886 }
887
888 #define ide_devset_get_flag(name, flag) \
889 static int get_##name(ide_drive_t *drive) \
890 { \
891 return !!(drive->dev_flags & flag); \
892 }
893
894 #define ide_devset_set_flag(name, flag) \
895 static int set_##name(ide_drive_t *drive, int arg) \
896 { \
897 if (arg) \
898 drive->dev_flags |= flag; \
899 else \
900 drive->dev_flags &= ~flag; \
901 return 0; \
902 }
903
904 #define __IDE_DEVSET(_name, _flags, _get, _set) \
905 const struct ide_devset ide_devset_##_name = \
906 __DEVSET(_flags, _get, _set)
907
908 #define IDE_DEVSET(_name, _flags, _get, _set) \
909 static __IDE_DEVSET(_name, _flags, _get, _set)
910
911 #define ide_devset_rw(_name, _func) \
912 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
913
914 #define ide_devset_w(_name, _func) \
915 IDE_DEVSET(_name, 0, NULL, set_##_func)
916
917 #define ide_ext_devset_rw(_name, _func) \
918 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
919
920 #define ide_ext_devset_rw_sync(_name, _func) \
921 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
922
923 #define ide_decl_devset(_name) \
924 extern const struct ide_devset ide_devset_##_name
925
926 ide_decl_devset(io_32bit);
927 ide_decl_devset(keepsettings);
928 ide_decl_devset(pio_mode);
929 ide_decl_devset(unmaskirq);
930 ide_decl_devset(using_dma);
931
932 #ifdef CONFIG_IDE_PROC_FS
933 /*
934 * /proc/ide interface
935 */
936
937 #define ide_devset_rw_field(_name, _field) \
938 ide_devset_get(_name, _field); \
939 ide_devset_set(_name, _field); \
940 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
941
942 #define ide_devset_rw_flag(_name, _field) \
943 ide_devset_get_flag(_name, _field); \
944 ide_devset_set_flag(_name, _field); \
945 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
946
947 struct ide_proc_devset {
948 const char *name;
949 const struct ide_devset *setting;
950 int min, max;
951 int (*mulf)(ide_drive_t *);
952 int (*divf)(ide_drive_t *);
953 };
954
955 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
956 .name = __stringify(_name), \
957 .setting = &ide_devset_##_name, \
958 .min = _min, \
959 .max = _max, \
960 .mulf = _mulf, \
961 .divf = _divf, \
962 }
963
964 #define IDE_PROC_DEVSET(_name, _min, _max) \
965 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
966
967 typedef struct {
968 const char *name;
969 umode_t mode;
970 const struct file_operations *proc_fops;
971 } ide_proc_entry_t;
972
973 void proc_ide_create(void);
974 void proc_ide_destroy(void);
975 void ide_proc_register_port(ide_hwif_t *);
976 void ide_proc_port_register_devices(ide_hwif_t *);
977 void ide_proc_unregister_device(ide_drive_t *);
978 void ide_proc_unregister_port(ide_hwif_t *);
979 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
980 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
981
982 extern const struct file_operations ide_capacity_proc_fops;
983 extern const struct file_operations ide_geometry_proc_fops;
984 #else
985 static inline void proc_ide_create(void) { ; }
986 static inline void proc_ide_destroy(void) { ; }
987 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
988 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
989 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
990 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
991 static inline void ide_proc_register_driver(ide_drive_t *drive,
992 struct ide_driver *driver) { ; }
993 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
994 struct ide_driver *driver) { ; }
995 #endif
996
997 enum {
998 /* enter/exit functions */
999 IDE_DBG_FUNC = (1 << 0),
1000 /* sense key/asc handling */
1001 IDE_DBG_SENSE = (1 << 1),
1002 /* packet commands handling */
1003 IDE_DBG_PC = (1 << 2),
1004 /* request handling */
1005 IDE_DBG_RQ = (1 << 3),
1006 /* driver probing/setup */
1007 IDE_DBG_PROBE = (1 << 4),
1008 };
1009
1010 /* DRV_NAME has to be defined in the driver before using the macro below */
1011 #define __ide_debug_log(lvl, fmt, args...) \
1012 { \
1013 if (unlikely(drive->debug_mask & lvl)) \
1014 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1015 __func__, ## args); \
1016 }
1017
1018 /*
1019 * Power Management state machine (rq->pm->pm_step).
1020 *
1021 * For each step, the core calls ide_start_power_step() first.
1022 * This can return:
1023 * - ide_stopped : In this case, the core calls us back again unless
1024 * step have been set to ide_power_state_completed.
1025 * - ide_started : In this case, the channel is left busy until an
1026 * async event (interrupt) occurs.
1027 * Typically, ide_start_power_step() will issue a taskfile request with
1028 * do_rw_taskfile().
1029 *
1030 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1031 * with the error code if any. This routine should update the step value
1032 * and return. It should not start a new request. The core will call
1033 * ide_start_power_step() for the new step value, unless step have been
1034 * set to IDE_PM_COMPLETED.
1035 */
1036 enum {
1037 IDE_PM_START_SUSPEND,
1038 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1039 IDE_PM_STANDBY,
1040
1041 IDE_PM_START_RESUME,
1042 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1043 IDE_PM_IDLE,
1044 IDE_PM_RESTORE_DMA,
1045
1046 IDE_PM_COMPLETED,
1047 };
1048
1049 int generic_ide_suspend(struct device *, pm_message_t);
1050 int generic_ide_resume(struct device *);
1051
1052 void ide_complete_power_step(ide_drive_t *, struct request *);
1053 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1054 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1055 void ide_check_pm_state(ide_drive_t *, struct request *);
1056
1057 /*
1058 * Subdrivers support.
1059 *
1060 * The gendriver.owner field should be set to the module owner of this driver.
1061 * The gendriver.name field should be set to the name of this driver
1062 */
1063 struct ide_driver {
1064 const char *version;
1065 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1066 struct device_driver gen_driver;
1067 int (*probe)(ide_drive_t *);
1068 void (*remove)(ide_drive_t *);
1069 void (*resume)(ide_drive_t *);
1070 void (*shutdown)(ide_drive_t *);
1071 #ifdef CONFIG_IDE_PROC_FS
1072 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1073 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1074 #endif
1075 };
1076
1077 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1078
1079 int ide_device_get(ide_drive_t *);
1080 void ide_device_put(ide_drive_t *);
1081
1082 struct ide_ioctl_devset {
1083 unsigned int get_ioctl;
1084 unsigned int set_ioctl;
1085 const struct ide_devset *setting;
1086 };
1087
1088 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1089 unsigned long, const struct ide_ioctl_devset *);
1090
1091 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1092
1093 extern int ide_vlb_clk;
1094 extern int ide_pci_clk;
1095
1096 int ide_end_rq(ide_drive_t *, struct request *, blk_status_t, unsigned int);
1097 void ide_kill_rq(ide_drive_t *, struct request *);
1098
1099 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1100 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1101
1102 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1103 unsigned int);
1104
1105 void ide_pad_transfer(ide_drive_t *, int, int);
1106
1107 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1108
1109 void ide_fix_driveid(u16 *);
1110
1111 extern void ide_fixstring(u8 *, const int, const int);
1112
1113 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1114
1115 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1116 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1117
1118 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1119 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1120
1121 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1122
1123 extern int ide_devset_execute(ide_drive_t *drive,
1124 const struct ide_devset *setting, int arg);
1125
1126 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1127 int ide_complete_rq(ide_drive_t *, blk_status_t, unsigned int);
1128
1129 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1130 void ide_tf_dump(const char *, struct ide_cmd *);
1131
1132 void ide_exec_command(ide_hwif_t *, u8);
1133 u8 ide_read_status(ide_hwif_t *);
1134 u8 ide_read_altstatus(ide_hwif_t *);
1135 void ide_write_devctl(ide_hwif_t *, u8);
1136
1137 void ide_dev_select(ide_drive_t *);
1138 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1139 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1140
1141 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1142 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1143
1144 void SELECT_MASK(ide_drive_t *, int);
1145
1146 u8 ide_read_error(ide_drive_t *);
1147 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1148
1149 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1150
1151 int ide_check_atapi_device(ide_drive_t *, const char *);
1152
1153 void ide_init_pc(struct ide_atapi_pc *);
1154
1155 /* Disk head parking */
1156 extern wait_queue_head_t ide_park_wq;
1157 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1158 char *buf);
1159 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1160 const char *buf, size_t len);
1161
1162 /*
1163 * Special requests for ide-tape block device strategy routine.
1164 *
1165 * In order to service a character device command, we add special requests to
1166 * the tail of our block device request queue and wait for their completion.
1167 */
1168 enum {
1169 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1170 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1171 REQ_IDETAPE_READ = (1 << 2),
1172 REQ_IDETAPE_WRITE = (1 << 3),
1173 };
1174
1175 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1176 void *, unsigned int);
1177
1178 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1179 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1180 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1181 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1182 void ide_retry_pc(ide_drive_t *drive);
1183
1184 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1185 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1186
1187 int ide_cd_expiry(ide_drive_t *);
1188
1189 int ide_cd_get_xferlen(struct request *);
1190
1191 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1192
1193 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1194
1195 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1196
1197 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1198
1199 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1200 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1201
1202 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1203
1204 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1205
1206 extern int ide_driveid_update(ide_drive_t *);
1207 extern int ide_config_drive_speed(ide_drive_t *, u8);
1208 extern u8 eighty_ninty_three (ide_drive_t *);
1209 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1210
1211 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1212
1213 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1214
1215 extern void ide_timer_expiry(struct timer_list *t);
1216 extern irqreturn_t ide_intr(int irq, void *dev_id);
1217 extern void do_ide_request(struct request_queue *);
1218 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1219
1220 void ide_init_disk(struct gendisk *, ide_drive_t *);
1221
1222 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1223 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1224 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1225 #else
1226 #define ide_pci_register_driver(d) pci_register_driver(d)
1227 #endif
1228
1229 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1230 {
1231 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1232 return 1;
1233 return 0;
1234 }
1235
1236 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1237 struct ide_hw *, struct ide_hw **);
1238 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1239
1240 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1241 int ide_pci_set_master(struct pci_dev *, const char *);
1242 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1243 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1244 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1245 #else
1246 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1247 const struct ide_port_info *d)
1248 {
1249 return -EINVAL;
1250 }
1251 #endif
1252
1253 struct ide_pci_enablebit {
1254 u8 reg; /* byte pci reg holding the enable-bit */
1255 u8 mask; /* mask to isolate the enable-bit */
1256 u8 val; /* value of masked reg when "enabled" */
1257 };
1258
1259 enum {
1260 /* Uses ISA control ports not PCI ones. */
1261 IDE_HFLAG_ISA_PORTS = (1 << 0),
1262 /* single port device */
1263 IDE_HFLAG_SINGLE = (1 << 1),
1264 /* don't use legacy PIO blacklist */
1265 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1266 /* set for the second port of QD65xx */
1267 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1268 /* use PIO8/9 for prefetch off/on */
1269 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1270 /* use PIO6/7 for fast-devsel off/on */
1271 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1272 /* use 100-102 and 200-202 PIO values to set DMA modes */
1273 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1274 /*
1275 * keep DMA setting when programming PIO mode, may be used only
1276 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1277 */
1278 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1279 /* program host for the transfer mode after programming device */
1280 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1281 /* don't program host/device for the transfer mode ("smart" hosts) */
1282 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1283 /* trust BIOS for programming chipset/device for DMA */
1284 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1285 /* host is CS5510/CS5520 */
1286 IDE_HFLAG_CS5520 = (1 << 11),
1287 /* ATAPI DMA is unsupported */
1288 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1289 /* set if host is a "non-bootable" controller */
1290 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1291 /* host doesn't support DMA */
1292 IDE_HFLAG_NO_DMA = (1 << 14),
1293 /* check if host is PCI IDE device before allowing DMA */
1294 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1295 /* host uses MMIO */
1296 IDE_HFLAG_MMIO = (1 << 16),
1297 /* no LBA48 */
1298 IDE_HFLAG_NO_LBA48 = (1 << 17),
1299 /* no LBA48 DMA */
1300 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1301 /* data FIFO is cleared by an error */
1302 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1303 /* serialize ports */
1304 IDE_HFLAG_SERIALIZE = (1 << 20),
1305 /* host is DTC2278 */
1306 IDE_HFLAG_DTC2278 = (1 << 21),
1307 /* 4 devices on a single set of I/O ports */
1308 IDE_HFLAG_4DRIVES = (1 << 22),
1309 /* host is TRM290 */
1310 IDE_HFLAG_TRM290 = (1 << 23),
1311 /* use 32-bit I/O ops */
1312 IDE_HFLAG_IO_32BIT = (1 << 24),
1313 /* unmask IRQs */
1314 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1315 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1316 /* serialize ports if DMA is possible (for sl82c105) */
1317 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1318 /* force host out of "simplex" mode */
1319 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1320 /* DSC overlap is unsupported */
1321 IDE_HFLAG_NO_DSC = (1 << 29),
1322 /* never use 32-bit I/O ops */
1323 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1324 /* never unmask IRQs */
1325 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1326 };
1327
1328 #ifdef CONFIG_BLK_DEV_OFFBOARD
1329 # define IDE_HFLAG_OFF_BOARD 0
1330 #else
1331 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1332 #endif
1333
1334 struct ide_port_info {
1335 char *name;
1336
1337 int (*init_chipset)(struct pci_dev *);
1338
1339 void (*get_lock)(irq_handler_t, void *);
1340 void (*release_lock)(void);
1341
1342 void (*init_iops)(ide_hwif_t *);
1343 void (*init_hwif)(ide_hwif_t *);
1344 int (*init_dma)(ide_hwif_t *,
1345 const struct ide_port_info *);
1346
1347 const struct ide_tp_ops *tp_ops;
1348 const struct ide_port_ops *port_ops;
1349 const struct ide_dma_ops *dma_ops;
1350
1351 struct ide_pci_enablebit enablebits[2];
1352
1353 hwif_chipset_t chipset;
1354
1355 u16 max_sectors; /* if < than the default one */
1356
1357 u32 host_flags;
1358
1359 int irq_flags;
1360
1361 u8 pio_mask;
1362 u8 swdma_mask;
1363 u8 mwdma_mask;
1364 u8 udma_mask;
1365 };
1366
1367 /*
1368 * State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
1369 * requests.
1370 */
1371 struct ide_pm_state {
1372 /* PM state machine step value, currently driver specific */
1373 int pm_step;
1374 /* requested PM state value (S1, S2, S3, S4, ...) */
1375 u32 pm_state;
1376 void* data; /* for driver use */
1377 };
1378
1379
1380 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1381 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1382 const struct ide_port_info *, void *);
1383 void ide_pci_remove(struct pci_dev *);
1384
1385 #ifdef CONFIG_PM
1386 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1387 int ide_pci_resume(struct pci_dev *);
1388 #else
1389 #define ide_pci_suspend NULL
1390 #define ide_pci_resume NULL
1391 #endif
1392
1393 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1394 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1395
1396 #define BAD_DMA_DRIVE 0
1397 #define GOOD_DMA_DRIVE 1
1398
1399 struct drive_list_entry {
1400 const char *id_model;
1401 const char *id_firmware;
1402 };
1403
1404 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1405
1406 #ifdef CONFIG_BLK_DEV_IDEDMA
1407 int ide_dma_good_drive(ide_drive_t *);
1408 int __ide_dma_bad_drive(ide_drive_t *);
1409
1410 u8 ide_find_dma_mode(ide_drive_t *, u8);
1411
1412 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1413 {
1414 return ide_find_dma_mode(drive, XFER_UDMA_6);
1415 }
1416
1417 void ide_dma_off_quietly(ide_drive_t *);
1418 void ide_dma_off(ide_drive_t *);
1419 void ide_dma_on(ide_drive_t *);
1420 int ide_set_dma(ide_drive_t *);
1421 void ide_check_dma_crc(ide_drive_t *);
1422 ide_startstop_t ide_dma_intr(ide_drive_t *);
1423
1424 int ide_allocate_dma_engine(ide_hwif_t *);
1425 void ide_release_dma_engine(ide_hwif_t *);
1426
1427 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1428 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1429
1430 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1431 int config_drive_for_dma(ide_drive_t *);
1432 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1433 void ide_dma_host_set(ide_drive_t *, int);
1434 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1435 extern void ide_dma_start(ide_drive_t *);
1436 int ide_dma_end(ide_drive_t *);
1437 int ide_dma_test_irq(ide_drive_t *);
1438 int ide_dma_sff_timer_expiry(ide_drive_t *);
1439 u8 ide_dma_sff_read_status(ide_hwif_t *);
1440 extern const struct ide_dma_ops sff_dma_ops;
1441 #else
1442 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1443 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1444
1445 void ide_dma_lost_irq(ide_drive_t *);
1446 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1447
1448 #else
1449 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1450 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1451 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1452 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1453 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1454 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1455 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1456 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1457 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1458 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1459 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1460 static inline int ide_dma_prepare(ide_drive_t *drive,
1461 struct ide_cmd *cmd) { return 1; }
1462 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1463 struct ide_cmd *cmd) { ; }
1464 #endif /* CONFIG_BLK_DEV_IDEDMA */
1465
1466 #ifdef CONFIG_BLK_DEV_IDEACPI
1467 int ide_acpi_init(void);
1468 bool ide_port_acpi(ide_hwif_t *hwif);
1469 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1470 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1471 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1472 void ide_acpi_init_port(ide_hwif_t *);
1473 void ide_acpi_port_init_devices(ide_hwif_t *);
1474 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1475 #else
1476 static inline int ide_acpi_init(void) { return 0; }
1477 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1478 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1479 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1480 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1481 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1482 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1483 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1484 #endif
1485
1486 void ide_register_region(struct gendisk *);
1487 void ide_unregister_region(struct gendisk *);
1488
1489 void ide_check_nien_quirk_list(ide_drive_t *);
1490 void ide_undecoded_slave(ide_drive_t *);
1491
1492 void ide_port_apply_params(ide_hwif_t *);
1493 int ide_sysfs_register_port(ide_hwif_t *);
1494
1495 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1496 unsigned int);
1497 void ide_host_free(struct ide_host *);
1498 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1499 struct ide_hw **);
1500 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1501 struct ide_host **);
1502 void ide_host_remove(struct ide_host *);
1503 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1504 void ide_port_unregister_devices(ide_hwif_t *);
1505 void ide_port_scan(ide_hwif_t *);
1506
1507 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1508 {
1509 return hwif->hwif_data;
1510 }
1511
1512 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1513 {
1514 hwif->hwif_data = data;
1515 }
1516
1517 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1518
1519 u64 ide_get_lba_addr(struct ide_cmd *, int);
1520 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1521
1522 struct ide_timing {
1523 u8 mode;
1524 u8 setup; /* t1 */
1525 u16 act8b; /* t2 for 8-bit io */
1526 u16 rec8b; /* t2i for 8-bit io */
1527 u16 cyc8b; /* t0 for 8-bit io */
1528 u16 active; /* t2 or tD */
1529 u16 recover; /* t2i or tK */
1530 u16 cycle; /* t0 */
1531 u16 udma; /* t2CYCTYP/2 */
1532 };
1533
1534 enum {
1535 IDE_TIMING_SETUP = (1 << 0),
1536 IDE_TIMING_ACT8B = (1 << 1),
1537 IDE_TIMING_REC8B = (1 << 2),
1538 IDE_TIMING_CYC8B = (1 << 3),
1539 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1540 IDE_TIMING_CYC8B,
1541 IDE_TIMING_ACTIVE = (1 << 4),
1542 IDE_TIMING_RECOVER = (1 << 5),
1543 IDE_TIMING_CYCLE = (1 << 6),
1544 IDE_TIMING_UDMA = (1 << 7),
1545 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1546 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1547 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1548 };
1549
1550 struct ide_timing *ide_timing_find_mode(u8);
1551 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1552 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1553 struct ide_timing *, unsigned int);
1554 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1555
1556 #ifdef CONFIG_IDE_XFER_MODE
1557 int ide_scan_pio_blacklist(char *);
1558 const char *ide_xfer_verbose(u8);
1559 int ide_pio_need_iordy(ide_drive_t *, const u8);
1560 int ide_set_pio_mode(ide_drive_t *, u8);
1561 int ide_set_dma_mode(ide_drive_t *, u8);
1562 void ide_set_pio(ide_drive_t *, u8);
1563 int ide_set_xfer_rate(ide_drive_t *, u8);
1564 #else
1565 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1566 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1567 #endif
1568
1569 static inline void ide_set_max_pio(ide_drive_t *drive)
1570 {
1571 ide_set_pio(drive, 255);
1572 }
1573
1574 char *ide_media_string(ide_drive_t *);
1575
1576 extern const struct attribute_group *ide_dev_groups[];
1577 extern struct bus_type ide_bus_type;
1578 extern struct class *ide_port_class;
1579
1580 static inline void ide_dump_identify(u8 *id)
1581 {
1582 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1583 }
1584
1585 static inline int hwif_to_node(ide_hwif_t *hwif)
1586 {
1587 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1588 }
1589
1590 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1591 {
1592 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1593
1594 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1595 }
1596
1597 static inline void *ide_get_drivedata(ide_drive_t *drive)
1598 {
1599 return drive->drive_data;
1600 }
1601
1602 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1603 {
1604 drive->drive_data = data;
1605 }
1606
1607 #define ide_port_for_each_dev(i, dev, port) \
1608 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1609
1610 #define ide_port_for_each_present_dev(i, dev, port) \
1611 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1612 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1613
1614 #define ide_host_for_each_port(i, port, host) \
1615 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1616
1617
1618 #endif /* _IDE_H */
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