projects / deliverable / linux.git / blob
? search:


fcd98e1d186300189df9ddd24807d52992c6aea2
[deliverable/linux.git] / include / linux / ide.h
1 #ifndef _IDE_H
2 #define _IDE_H
3 /*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/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)
30 # define SUPPORT_VLB_SYNC 0
31 #else
32 # define SUPPORT_VLB_SYNC 1
33 #endif
34
35 /*
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
37 * number.
38 */
39
40 #define IDE_NO_IRQ (-1)
41
42 typedef unsigned char byte; /* used everywhere */
43
44 /*
45 * Probably not wise to fiddle with these
46 */
47 #define ERROR_MAX 8 /* Max read/write errors per sector */
48 #define ERROR_RESET 3 /* Reset controller every 4th retry */
49 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
50
51 /*
52 * state flags
53 */
54
55 #define DMA_PIO_RETRY 1 /* retrying in PIO */
56
57 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
58 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
59
60 /*
61 * Definitions for accessing IDE controller registers
62 */
63 #define IDE_NR_PORTS (10)
64
65 struct ide_io_ports {
66 unsigned long data_addr;
67
68 union {
69 unsigned long error_addr; /* read: error */
70 unsigned long feature_addr; /* write: feature */
71 };
72
73 unsigned long nsect_addr;
74 unsigned long lbal_addr;
75 unsigned long lbam_addr;
76 unsigned long lbah_addr;
77
78 unsigned long device_addr;
79
80 union {
81 unsigned long status_addr; /*  read: status  */
82 unsigned long command_addr; /* write: command */
83 };
84
85 unsigned long ctl_addr;
86
87 unsigned long irq_addr;
88 };
89
90 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
91
92 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
93 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
94 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
95 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
96
97 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
98
99 #define SATA_NR_PORTS (3) /* 16 possible ?? */
100
101 #define SATA_STATUS_OFFSET (0)
102 #define SATA_ERROR_OFFSET (1)
103 #define SATA_CONTROL_OFFSET (2)
104
105 /*
106 * Our Physical Region Descriptor (PRD) table should be large enough
107 * to handle the biggest I/O request we are likely to see. Since requests
108 * can have no more than 256 sectors, and since the typical blocksize is
109 * two or more sectors, we could get by with a limit of 128 entries here for
110 * the usual worst case. Most requests seem to include some contiguous blocks,
111 * further reducing the number of table entries required.
112 *
113 * The driver reverts to PIO mode for individual requests that exceed
114 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
115 * 100% of all crazy scenarios here is not necessary.
116 *
117 * As it turns out though, we must allocate a full 4KB page for this,
118 * so the two PRD tables (ide0 & ide1) will each get half of that,
119 * allowing each to have about 256 entries (8 bytes each) from this.
120 */
121 #define PRD_BYTES 8
122 #define PRD_ENTRIES 256
123
124 /*
125 * Some more useful definitions
126 */
127 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
128 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
129 #define SECTOR_SIZE 512
130
131 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
132
133 /*
134 * Timeouts for various operations:
135 */
136 enum {
137 /* spec allows up to 20ms */
138 WAIT_DRQ = HZ / 10, /* 100ms */
139 /* some laptops are very slow */
140 WAIT_READY = 5 * HZ, /* 5s */
141 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
142 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
143 /* worst case when spinning up */
144 WAIT_WORSTCASE = 30 * HZ, /* 30s */
145 /* maximum wait for an IRQ to happen */
146 WAIT_CMD = 10 * HZ, /* 10s */
147 /* Some drives require a longer IRQ timeout. */
148 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
149 /*
150 * Some drives (for example, Seagate STT3401A Travan) require a very
151 * long timeout, because they don't return an interrupt or clear their
152 * BSY bit until after the command completes (even retension commands).
153 */
154 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
155 /* minimum sleep time */
156 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
157 };
158
159 /*
160 * Op codes for special requests to be handled by ide_special_rq().
161 * Values should be in the range of 0x20 to 0x3f.
162 */
163 #define REQ_DRIVE_RESET 0x20
164 #define REQ_DEVSET_EXEC 0x21
165
166 /*
167 * Check for an interrupt and acknowledge the interrupt status
168 */
169 struct hwif_s;
170 typedef int (ide_ack_intr_t)(struct hwif_s *);
171
172 /*
173 * hwif_chipset_t is used to keep track of the specific hardware
174 * chipset used by each IDE interface, if known.
175 */
176 enum { ide_unknown, ide_generic, ide_pci,
177 ide_cmd640, ide_dtc2278, ide_ali14xx,
178 ide_qd65xx, ide_umc8672, ide_ht6560b,
179 ide_rz1000, ide_trm290,
180 ide_cmd646, ide_cy82c693, ide_4drives,
181 ide_pmac, ide_acorn,
182 ide_au1xxx, ide_palm3710
183 };
184
185 typedef u8 hwif_chipset_t;
186
187 /*
188 * Structure to hold all information about the location of this port
189 */
190 typedef struct hw_regs_s {
191 union {
192 struct ide_io_ports io_ports;
193 unsigned long io_ports_array[IDE_NR_PORTS];
194 };
195
196 int irq; /* our irq number */
197 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
198 hwif_chipset_t chipset;
199 struct device *dev, *parent;
200 unsigned long config;
201 } hw_regs_t;
202
203 void ide_init_port_data(struct hwif_s *, unsigned int);
204 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
205
206 static inline void ide_std_init_ports(hw_regs_t *hw,
207 unsigned long io_addr,
208 unsigned long ctl_addr)
209 {
210 unsigned int i;
211
212 for (i = 0; i <= 7; i++)
213 hw->io_ports_array[i] = io_addr++;
214
215 hw->io_ports.ctl_addr = ctl_addr;
216 }
217
218 /* for IDE PCI controllers in legacy mode, temporary */
219 static inline int __ide_default_irq(unsigned long base)
220 {
221 switch (base) {
222 #ifdef CONFIG_IA64
223 case 0x1f0: return isa_irq_to_vector(14);
224 case 0x170: return isa_irq_to_vector(15);
225 #else
226 case 0x1f0: return 14;
227 case 0x170: return 15;
228 #endif
229 }
230 return 0;
231 }
232
233 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
234 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
235 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
236 #include <asm/ide.h>
237 #else
238 #include <asm-generic/ide_iops.h>
239 #endif
240
241 #define MAX_HWIFS 10
242
243 /* Currently only m68k, apus and m8xx need it */
244 #ifndef IDE_ARCH_ACK_INTR
245 # define ide_ack_intr(hwif) (1)
246 #endif
247
248 /* Currently only Atari needs it */
249 #ifndef IDE_ARCH_LOCK
250 # define ide_release_lock() do {} while (0)
251 # define ide_get_lock(hdlr, data) do {} while (0)
252 #endif /* IDE_ARCH_LOCK */
253
254 /*
255 * Now for the data we need to maintain per-drive: ide_drive_t
256 */
257
258 #define ide_scsi 0x21
259 #define ide_disk 0x20
260 #define ide_optical 0x7
261 #define ide_cdrom 0x5
262 #define ide_tape 0x1
263 #define ide_floppy 0x0
264
265 /*
266 * Special Driver Flags
267 *
268 * set_geometry : respecify drive geometry
269 * recalibrate : seek to cyl 0
270 * set_multmode : set multmode count
271 * set_tune : tune interface for drive
272 * serviced : service command
273 * reserved : unused
274 */
275 typedef union {
276 unsigned all : 8;
277 struct {
278 unsigned set_geometry : 1;
279 unsigned recalibrate : 1;
280 unsigned set_multmode : 1;
281 unsigned set_tune : 1;
282 unsigned serviced : 1;
283 unsigned reserved : 3;
284 } b;
285 } special_t;
286
287 /*
288 * ATA-IDE Select Register, aka Device-Head
289 *
290 * head : always zeros here
291 * unit : drive select number: 0/1
292 * bit5 : always 1
293 * lba : using LBA instead of CHS
294 * bit7 : always 1
295 */
296 typedef union {
297 unsigned all : 8;
298 struct {
299 #if defined(__LITTLE_ENDIAN_BITFIELD)
300 unsigned head : 4;
301 unsigned unit : 1;
302 unsigned bit5 : 1;
303 unsigned lba : 1;
304 unsigned bit7 : 1;
305 #elif defined(__BIG_ENDIAN_BITFIELD)
306 unsigned bit7 : 1;
307 unsigned lba : 1;
308 unsigned bit5 : 1;
309 unsigned unit : 1;
310 unsigned head : 4;
311 #else
312 #error "Please fix <asm/byteorder.h>"
313 #endif
314 } b;
315 } select_t, ata_select_t;
316
317 /*
318 * Status returned from various ide_ functions
319 */
320 typedef enum {
321 ide_stopped, /* no drive operation was started */
322 ide_started, /* a drive operation was started, handler was set */
323 } ide_startstop_t;
324
325 /* ATAPI packet command flags */
326 enum {
327 /* set when an error is considered normal - no retry (ide-tape) */
328 PC_FLAG_ABORT = (1 << 0),
329 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
330 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
331 PC_FLAG_DMA_OK = (1 << 3),
332 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
333 PC_FLAG_DMA_ERROR = (1 << 5),
334 PC_FLAG_WRITING = (1 << 6),
335 /* command timed out */
336 PC_FLAG_TIMEDOUT = (1 << 7),
337 };
338
339 /*
340 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
341 * This is used for several packet commands (not for READ/WRITE commands).
342 */
343 #define IDE_PC_BUFFER_SIZE 256
344
345 struct ide_atapi_pc {
346 /* actual packet bytes */
347 u8 c[12];
348 /* incremented on each retry */
349 int retries;
350 int error;
351
352 /* bytes to transfer */
353 int req_xfer;
354 /* bytes actually transferred */
355 int xferred;
356
357 /* data buffer */
358 u8 *buf;
359 /* current buffer position */
360 u8 *cur_pos;
361 int buf_size;
362 /* missing/available data on the current buffer */
363 int b_count;
364
365 /* the corresponding request */
366 struct request *rq;
367
368 unsigned long flags;
369
370 /*
371 * those are more or less driver-specific and some of them are subject
372 * to change/removal later.
373 */
374 u8 pc_buf[IDE_PC_BUFFER_SIZE];
375
376 /* idetape only */
377 struct idetape_bh *bh;
378 char *b_data;
379
380 /* idescsi only for now */
381 struct scatterlist *sg;
382 unsigned int sg_cnt;
383
384 struct scsi_cmnd *scsi_cmd;
385 void (*done) (struct scsi_cmnd *);
386
387 unsigned long timeout;
388 };
389
390 struct ide_devset;
391 struct ide_driver_s;
392
393 #ifdef CONFIG_BLK_DEV_IDEACPI
394 struct ide_acpi_drive_link;
395 struct ide_acpi_hwif_link;
396 #endif
397
398 /* ATAPI device flags */
399 enum {
400 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
401 IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
402 /* Drive cannot lock the door. */
403 IDE_AFLAG_NO_DOORLOCK = (1 << 2),
404
405 /* ide-cd */
406 /* Drive cannot eject the disc. */
407 IDE_AFLAG_NO_EJECT = (1 << 3),
408 /* Drive is a pre ATAPI 1.2 drive. */
409 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
410 /* TOC addresses are in BCD. */
411 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
412 /* TOC track numbers are in BCD. */
413 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
414 /*
415 * Drive does not provide data in multiples of SECTOR_SIZE
416 * when more than one interrupt is needed.
417 */
418 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
419 /* Seeking in progress. */
420 IDE_AFLAG_SEEKING = (1 << 8),
421 /* Saved TOC information is current. */
422 IDE_AFLAG_TOC_VALID = (1 << 9),
423 /* We think that the drive door is locked. */
424 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
425 /* SET_CD_SPEED command is unsupported. */
426 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
427 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
428 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
429 IDE_AFLAG_SANYO_3CD = (1 << 14),
430 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
431 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
432 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
433
434 /* ide-floppy */
435 /* Format in progress */
436 IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
437 /* Avoid commands not supported in Clik drive */
438 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
439 /* Requires BH algorithm for packets */
440 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
441 /* Write protect */
442 IDE_AFLAG_WP = (1 << 21),
443 /* Supports format progress report */
444 IDE_AFLAG_SRFP = (1 << 22),
445
446 /* ide-tape */
447 IDE_AFLAG_IGNORE_DSC = (1 << 23),
448 /* 0 When the tape position is unknown */
449 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
450 /* Device already opened */
451 IDE_AFLAG_BUSY = (1 << 25),
452 /* Attempt to auto-detect the current user block size */
453 IDE_AFLAG_DETECT_BS = (1 << 26),
454 /* Currently on a filemark */
455 IDE_AFLAG_FILEMARK = (1 << 27),
456 /* 0 = no tape is loaded, so we don't rewind after ejecting */
457 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
458
459 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
460 };
461
462 struct ide_drive_s {
463 char name[4]; /* drive name, such as "hda" */
464 char driver_req[10]; /* requests specific driver */
465
466 struct request_queue *queue; /* request queue */
467
468 struct request *rq; /* current request */
469 struct ide_drive_s *next; /* circular list of hwgroup drives */
470 void *driver_data; /* extra driver data */
471 u16 *id; /* identification info */
472 #ifdef CONFIG_IDE_PROC_FS
473 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
474 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
475 #endif
476 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
477
478 unsigned long sleep; /* sleep until this time */
479 unsigned long service_start; /* time we started last request */
480 unsigned long service_time; /* service time of last request */
481 unsigned long timeout; /* max time to wait for irq */
482
483 special_t special; /* special action flags */
484 select_t select; /* basic drive/head select reg value */
485
486 u8 retry_pio; /* retrying dma capable host in pio */
487 u8 state; /* retry state */
488 u8 waiting_for_dma; /* dma currently in progress */
489
490 unsigned keep_settings : 1; /* restore settings after drive reset */
491 unsigned using_dma : 1; /* disk is using dma for read/write */
492 unsigned unmask : 1; /* okay to unmask other irqs */
493 unsigned noflush : 1; /* don't attempt flushes */
494 unsigned dsc_overlap : 1; /* DSC overlap */
495 unsigned nice1 : 1; /* give potential excess bandwidth */
496 unsigned present : 1; /* drive is physically present */
497 unsigned dead : 1; /* device ejected hint */
498 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
499 unsigned noprobe : 1; /* from: hdx=noprobe */
500 unsigned removable : 1; /* 1 if need to do check_media_change */
501 unsigned attach : 1; /* needed for removable devices */
502 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
503 unsigned no_unmask : 1; /* disallow setting unmask bit */
504 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
505 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
506 unsigned nodma : 1; /* disallow DMA */
507 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
508 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
509 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
510 unsigned post_reset : 1;
511 unsigned udma33_warned : 1;
512 unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
513 unsigned wcache : 1; /* status of write cache */
514 unsigned nowerr : 1; /* used for ignoring ATA_DF */
515
516 u8 quirk_list; /* considered quirky, set for a specific host */
517 u8 init_speed; /* transfer rate set at boot */
518 u8 current_speed; /* current transfer rate set */
519 u8 desired_speed; /* desired transfer rate set */
520 u8 dn; /* now wide spread use */
521 u8 acoustic; /* acoustic management */
522 u8 media; /* disk, cdrom, tape, floppy, ... */
523 u8 ready_stat; /* min status value for drive ready */
524 u8 mult_count; /* current multiple sector setting */
525 u8 mult_req; /* requested multiple sector setting */
526 u8 tune_req; /* requested drive tuning setting */
527 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
528 u8 bad_wstat; /* used for ignoring ATA_DF */
529 u8 head; /* "real" number of heads */
530 u8 sect; /* "real" sectors per track */
531 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
532 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
533
534 /* delay this long before sending packet command */
535 u8 pc_delay;
536
537 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
538 unsigned int cyl; /* "real" number of cyls */
539 unsigned int drive_data; /* used by set_pio_mode/selectproc */
540 unsigned int failures; /* current failure count */
541 unsigned int max_failures; /* maximum allowed failure count */
542 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
543
544 u64 capacity64; /* total number of sectors */
545
546 int lun; /* logical unit */
547 int crc_count; /* crc counter to reduce drive speed */
548
549 unsigned long debug_mask; /* debugging levels switch */
550
551 #ifdef CONFIG_BLK_DEV_IDEACPI
552 struct ide_acpi_drive_link *acpidata;
553 #endif
554 struct list_head list;
555 struct device gendev;
556 struct completion gendev_rel_comp; /* to deal with device release() */
557
558 /* current packet command */
559 struct ide_atapi_pc *pc;
560
561 /* callback for packet commands */
562 void (*pc_callback)(struct ide_drive_s *, int);
563
564 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
565 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
566 unsigned int, int);
567
568 unsigned long atapi_flags;
569
570 struct ide_atapi_pc request_sense_pc;
571 struct request request_sense_rq;
572 };
573
574 typedef struct ide_drive_s ide_drive_t;
575
576 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
577
578 #define to_ide_drv(obj, cont_type) \
579 container_of(obj, struct cont_type, kref)
580
581 #define ide_drv_g(disk, cont_type) \
582 container_of((disk)->private_data, struct cont_type, driver)
583
584 struct ide_task_s;
585 struct ide_port_info;
586
587 struct ide_tp_ops {
588 void (*exec_command)(struct hwif_s *, u8);
589 u8 (*read_status)(struct hwif_s *);
590 u8 (*read_altstatus)(struct hwif_s *);
591 u8 (*read_sff_dma_status)(struct hwif_s *);
592
593 void (*set_irq)(struct hwif_s *, int);
594
595 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
596 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
597
598 void (*input_data)(ide_drive_t *, struct request *, void *,
599 unsigned int);
600 void (*output_data)(ide_drive_t *, struct request *, void *,
601 unsigned int);
602 };
603
604 extern const struct ide_tp_ops default_tp_ops;
605
606 /**
607 * struct ide_port_ops - IDE port operations
608 *
609 * @init_dev: host specific initialization of a device
610 * @set_pio_mode: routine to program host for PIO mode
611 * @set_dma_mode: routine to program host for DMA mode
612 * @selectproc: tweaks hardware to select drive
613 * @reset_poll: chipset polling based on hba specifics
614 * @pre_reset: chipset specific changes to default for device-hba resets
615 * @resetproc: routine to reset controller after a disk reset
616 * @maskproc: special host masking for drive selection
617 * @quirkproc: check host's drive quirk list
618 *
619 * @mdma_filter: filter MDMA modes
620 * @udma_filter: filter UDMA modes
621 *
622 * @cable_detect: detect cable type
623 */
624 struct ide_port_ops {
625 void (*init_dev)(ide_drive_t *);
626 void (*set_pio_mode)(ide_drive_t *, const u8);
627 void (*set_dma_mode)(ide_drive_t *, const u8);
628 void (*selectproc)(ide_drive_t *);
629 int (*reset_poll)(ide_drive_t *);
630 void (*pre_reset)(ide_drive_t *);
631 void (*resetproc)(ide_drive_t *);
632 void (*maskproc)(ide_drive_t *, int);
633 void (*quirkproc)(ide_drive_t *);
634
635 u8 (*mdma_filter)(ide_drive_t *);
636 u8 (*udma_filter)(ide_drive_t *);
637
638 u8 (*cable_detect)(struct hwif_s *);
639 };
640
641 struct ide_dma_ops {
642 void (*dma_host_set)(struct ide_drive_s *, int);
643 int (*dma_setup)(struct ide_drive_s *);
644 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
645 void (*dma_start)(struct ide_drive_s *);
646 int (*dma_end)(struct ide_drive_s *);
647 int (*dma_test_irq)(struct ide_drive_s *);
648 void (*dma_lost_irq)(struct ide_drive_s *);
649 void (*dma_timeout)(struct ide_drive_s *);
650 };
651
652 struct ide_host;
653
654 typedef struct hwif_s {
655 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
656 struct hwif_s *mate; /* other hwif from same PCI chip */
657 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
658 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
659
660 struct ide_host *host;
661
662 char name[6]; /* name of interface, eg. "ide0" */
663
664 struct ide_io_ports io_ports;
665
666 unsigned long sata_scr[SATA_NR_PORTS];
667
668 ide_drive_t drives[MAX_DRIVES]; /* drive info */
669
670 u8 major; /* our major number */
671 u8 index; /* 0 for ide0; 1 for ide1; ... */
672 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
673
674 u32 host_flags;
675
676 u8 pio_mask;
677
678 u8 ultra_mask;
679 u8 mwdma_mask;
680 u8 swdma_mask;
681
682 u8 cbl; /* cable type */
683
684 hwif_chipset_t chipset; /* sub-module for tuning.. */
685
686 struct device *dev;
687
688 ide_ack_intr_t *ack_intr;
689
690 void (*rw_disk)(ide_drive_t *, struct request *);
691
692 const struct ide_tp_ops *tp_ops;
693 const struct ide_port_ops *port_ops;
694 const struct ide_dma_ops *dma_ops;
695
696 void (*ide_dma_clear_irq)(ide_drive_t *drive);
697
698 /* dma physical region descriptor table (cpu view) */
699 unsigned int *dmatable_cpu;
700 /* dma physical region descriptor table (dma view) */
701 dma_addr_t dmatable_dma;
702 /* Scatter-gather list used to build the above */
703 struct scatterlist *sg_table;
704 int sg_max_nents; /* Maximum number of entries in it */
705 int sg_nents; /* Current number of entries in it */
706 int sg_dma_direction; /* dma transfer direction */
707
708 /* data phase of the active command (currently only valid for PIO/DMA) */
709 int data_phase;
710
711 unsigned int nsect;
712 unsigned int nleft;
713 struct scatterlist *cursg;
714 unsigned int cursg_ofs;
715
716 int rqsize; /* max sectors per request */
717 int irq; /* our irq number */
718
719 unsigned long dma_base; /* base addr for dma ports */
720
721 unsigned long config_data; /* for use by chipset-specific code */
722 unsigned long select_data; /* for use by chipset-specific code */
723
724 unsigned long extra_base; /* extra addr for dma ports */
725 unsigned extra_ports; /* number of extra dma ports */
726
727 unsigned present : 1; /* this interface exists */
728 unsigned serialized : 1; /* serialized all channel operation */
729 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
730 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
731
732 struct device gendev;
733 struct device *portdev;
734
735 struct completion gendev_rel_comp; /* To deal with device release() */
736
737 void *hwif_data; /* extra hwif data */
738
739 unsigned dma;
740
741 #ifdef CONFIG_BLK_DEV_IDEACPI
742 struct ide_acpi_hwif_link *acpidata;
743 #endif
744 } ____cacheline_internodealigned_in_smp ide_hwif_t;
745
746 struct ide_host {
747 ide_hwif_t *ports[MAX_HWIFS];
748 unsigned int n_ports;
749 struct device *dev[2];
750 unsigned int (*init_chipset)(struct pci_dev *);
751 unsigned long host_flags;
752 void *host_priv;
753 };
754
755 /*
756 * internal ide interrupt handler type
757 */
758 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
759 typedef int (ide_expiry_t)(ide_drive_t *);
760
761 /* used by ide-cd, ide-floppy, etc. */
762 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
763
764 typedef struct hwgroup_s {
765 /* irq handler, if active */
766 ide_startstop_t (*handler)(ide_drive_t *);
767
768 /* BOOL: protects all fields below */
769 volatile int busy;
770 /* BOOL: wake us up on timer expiry */
771 unsigned int sleeping : 1;
772 /* BOOL: polling active & poll_timeout field valid */
773 unsigned int polling : 1;
774
775 /* current drive */
776 ide_drive_t *drive;
777 /* ptr to current hwif in linked-list */
778 ide_hwif_t *hwif;
779
780 /* current request */
781 struct request *rq;
782
783 /* failsafe timer */
784 struct timer_list timer;
785 /* timeout value during long polls */
786 unsigned long poll_timeout;
787 /* queried upon timeouts */
788 int (*expiry)(ide_drive_t *);
789
790 int req_gen;
791 int req_gen_timer;
792 } ide_hwgroup_t;
793
794 typedef struct ide_driver_s ide_driver_t;
795
796 extern struct mutex ide_setting_mtx;
797
798 /*
799 * configurable drive settings
800 */
801
802 #define DS_SYNC (1 << 0)
803
804 struct ide_devset {
805 int (*get)(ide_drive_t *);
806 int (*set)(ide_drive_t *, int);
807 unsigned int flags;
808 };
809
810 #define __DEVSET(_flags, _get, _set) { \
811 .flags = _flags, \
812 .get = _get, \
813 .set = _set, \
814 }
815
816 #define ide_devset_get(name, field) \
817 static int get_##name(ide_drive_t *drive) \
818 { \
819 return drive->field; \
820 }
821
822 #define ide_devset_set(name, field) \
823 static int set_##name(ide_drive_t *drive, int arg) \
824 { \
825 drive->field = arg; \
826 return 0; \
827 }
828
829 #define __IDE_DEVSET(_name, _flags, _get, _set) \
830 const struct ide_devset ide_devset_##_name = \
831 __DEVSET(_flags, _get, _set)
832
833 #define IDE_DEVSET(_name, _flags, _get, _set) \
834 static __IDE_DEVSET(_name, _flags, _get, _set)
835
836 #define ide_devset_rw(_name, _func) \
837 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
838
839 #define ide_devset_w(_name, _func) \
840 IDE_DEVSET(_name, 0, NULL, set_##_func)
841
842 #define ide_devset_rw_sync(_name, _func) \
843 IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
844
845 #define ide_decl_devset(_name) \
846 extern const struct ide_devset ide_devset_##_name
847
848 ide_decl_devset(io_32bit);
849 ide_decl_devset(keepsettings);
850 ide_decl_devset(pio_mode);
851 ide_decl_devset(unmaskirq);
852 ide_decl_devset(using_dma);
853
854 #ifdef CONFIG_IDE_PROC_FS
855 /*
856 * /proc/ide interface
857 */
858
859 #define ide_devset_rw_field(_name, _field) \
860 ide_devset_get(_name, _field); \
861 ide_devset_set(_name, _field); \
862 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
863
864 struct ide_proc_devset {
865 const char *name;
866 const struct ide_devset *setting;
867 int min, max;
868 int (*mulf)(ide_drive_t *);
869 int (*divf)(ide_drive_t *);
870 };
871
872 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
873 .name = __stringify(_name), \
874 .setting = &ide_devset_##_name, \
875 .min = _min, \
876 .max = _max, \
877 .mulf = _mulf, \
878 .divf = _divf, \
879 }
880
881 #define IDE_PROC_DEVSET(_name, _min, _max) \
882 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
883
884 typedef struct {
885 const char *name;
886 mode_t mode;
887 read_proc_t *read_proc;
888 write_proc_t *write_proc;
889 } ide_proc_entry_t;
890
891 void proc_ide_create(void);
892 void proc_ide_destroy(void);
893 void ide_proc_register_port(ide_hwif_t *);
894 void ide_proc_port_register_devices(ide_hwif_t *);
895 void ide_proc_unregister_device(ide_drive_t *);
896 void ide_proc_unregister_port(ide_hwif_t *);
897 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
898 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
899
900 read_proc_t proc_ide_read_capacity;
901 read_proc_t proc_ide_read_geometry;
902
903 /*
904 * Standard exit stuff:
905 */
906 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
907 { \
908 len -= off; \
909 if (len < count) { \
910 *eof = 1; \
911 if (len <= 0) \
912 return 0; \
913 } else \
914 len = count; \
915 *start = page + off; \
916 return len; \
917 }
918 #else
919 static inline void proc_ide_create(void) { ; }
920 static inline void proc_ide_destroy(void) { ; }
921 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
922 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
923 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
924 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
925 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
926 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
927 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
928 #endif
929
930 /*
931 * Power Management step value (rq->pm->pm_step).
932 *
933 * The step value starts at 0 (ide_pm_state_start_suspend) for a
934 * suspend operation or 1000 (ide_pm_state_start_resume) for a
935 * resume operation.
936 *
937 * For each step, the core calls the subdriver start_power_step() first.
938 * This can return:
939 * - ide_stopped : In this case, the core calls us back again unless
940 * step have been set to ide_power_state_completed.
941 * - ide_started : In this case, the channel is left busy until an
942 * async event (interrupt) occurs.
943 * Typically, start_power_step() will issue a taskfile request with
944 * do_rw_taskfile().
945 *
946 * Upon reception of the interrupt, the core will call complete_power_step()
947 * with the error code if any. This routine should update the step value
948 * and return. It should not start a new request. The core will call
949 * start_power_step for the new step value, unless step have been set to
950 * ide_power_state_completed.
951 *
952 * Subdrivers are expected to define their own additional power
953 * steps from 1..999 for suspend and from 1001..1999 for resume,
954 * other values are reserved for future use.
955 */
956
957 enum {
958 ide_pm_state_completed = -1,
959 ide_pm_state_start_suspend = 0,
960 ide_pm_state_start_resume = 1000,
961 };
962
963 /*
964 * Subdrivers support.
965 *
966 * The gendriver.owner field should be set to the module owner of this driver.
967 * The gendriver.name field should be set to the name of this driver
968 */
969 struct ide_driver_s {
970 const char *version;
971 u8 media;
972 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
973 int (*end_request)(ide_drive_t *, int, int);
974 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
975 struct device_driver gen_driver;
976 int (*probe)(ide_drive_t *);
977 void (*remove)(ide_drive_t *);
978 void (*resume)(ide_drive_t *);
979 void (*shutdown)(ide_drive_t *);
980 #ifdef CONFIG_IDE_PROC_FS
981 ide_proc_entry_t *proc;
982 const struct ide_proc_devset *settings;
983 #endif
984 };
985
986 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
987
988 int ide_device_get(ide_drive_t *);
989 void ide_device_put(ide_drive_t *);
990
991 struct ide_ioctl_devset {
992 unsigned int get_ioctl;
993 unsigned int set_ioctl;
994 const struct ide_devset *setting;
995 };
996
997 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
998 unsigned long, const struct ide_ioctl_devset *);
999
1000 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
1001 unsigned, unsigned long);
1002
1003 extern int ide_vlb_clk;
1004 extern int ide_pci_clk;
1005
1006 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1007 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1008 int uptodate, int nr_sectors);
1009
1010 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1011
1012 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1013 ide_expiry_t *);
1014
1015 void ide_execute_pkt_cmd(ide_drive_t *);
1016
1017 void ide_pad_transfer(ide_drive_t *, int, int);
1018
1019 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1020
1021 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1022
1023 void ide_fix_driveid(u16 *);
1024
1025 extern void ide_fixstring(u8 *, const int, const int);
1026
1027 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1028
1029 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1030
1031 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1032
1033 extern int ide_devset_execute(ide_drive_t *drive,
1034 const struct ide_devset *setting, int arg);
1035
1036 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1037
1038 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1039
1040 enum {
1041 IDE_TFLAG_LBA48 = (1 << 0),
1042 IDE_TFLAG_FLAGGED = (1 << 2),
1043 IDE_TFLAG_OUT_DATA = (1 << 3),
1044 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
1045 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
1046 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
1047 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
1048 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
1049 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
1050 IDE_TFLAG_OUT_HOB_NSECT |
1051 IDE_TFLAG_OUT_HOB_LBAL |
1052 IDE_TFLAG_OUT_HOB_LBAM |
1053 IDE_TFLAG_OUT_HOB_LBAH,
1054 IDE_TFLAG_OUT_FEATURE = (1 << 9),
1055 IDE_TFLAG_OUT_NSECT = (1 << 10),
1056 IDE_TFLAG_OUT_LBAL = (1 << 11),
1057 IDE_TFLAG_OUT_LBAM = (1 << 12),
1058 IDE_TFLAG_OUT_LBAH = (1 << 13),
1059 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
1060 IDE_TFLAG_OUT_NSECT |
1061 IDE_TFLAG_OUT_LBAL |
1062 IDE_TFLAG_OUT_LBAM |
1063 IDE_TFLAG_OUT_LBAH,
1064 IDE_TFLAG_OUT_DEVICE = (1 << 14),
1065 IDE_TFLAG_WRITE = (1 << 15),
1066 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
1067 IDE_TFLAG_IN_DATA = (1 << 17),
1068 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
1069 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
1070 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1071 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1072 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1073 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1074 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1075 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1076 IDE_TFLAG_IN_HOB_LBAM |
1077 IDE_TFLAG_IN_HOB_LBAH,
1078 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1079 IDE_TFLAG_IN_HOB_NSECT |
1080 IDE_TFLAG_IN_HOB_LBA,
1081 IDE_TFLAG_IN_FEATURE = (1 << 1),
1082 IDE_TFLAG_IN_NSECT = (1 << 25),
1083 IDE_TFLAG_IN_LBAL = (1 << 26),
1084 IDE_TFLAG_IN_LBAM = (1 << 27),
1085 IDE_TFLAG_IN_LBAH = (1 << 28),
1086 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1087 IDE_TFLAG_IN_LBAM |
1088 IDE_TFLAG_IN_LBAH,
1089 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1090 IDE_TFLAG_IN_LBA,
1091 IDE_TFLAG_IN_DEVICE = (1 << 29),
1092 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1093 IDE_TFLAG_IN_HOB,
1094 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1095 IDE_TFLAG_IN_TF,
1096 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1097 IDE_TFLAG_IN_DEVICE,
1098 /* force 16-bit I/O operations */
1099 IDE_TFLAG_IO_16BIT = (1 << 30),
1100 /* ide_task_t was allocated using kmalloc() */
1101 IDE_TFLAG_DYN = (1 << 31),
1102 };
1103
1104 struct ide_taskfile {
1105 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1106
1107 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1108 u8 hob_nsect;
1109 u8 hob_lbal;
1110 u8 hob_lbam;
1111 u8 hob_lbah;
1112
1113 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1114
1115 union { /*  7: */
1116 u8 error; /* read: error */
1117 u8 feature; /* write: feature */
1118 };
1119
1120 u8 nsect; /* 8: number of sectors */
1121 u8 lbal; /* 9: LBA low */
1122 u8 lbam; /* 10: LBA mid */
1123 u8 lbah; /* 11: LBA high */
1124
1125 u8 device; /* 12: device select */
1126
1127 union { /* 13: */
1128 u8 status; /*  read: status  */
1129 u8 command; /* write: command */
1130 };
1131 };
1132
1133 typedef struct ide_task_s {
1134 union {
1135 struct ide_taskfile tf;
1136 u8 tf_array[14];
1137 };
1138 u32 tf_flags;
1139 int data_phase;
1140 struct request *rq; /* copy of request */
1141 void *special; /* valid_t generally */
1142 } ide_task_t;
1143
1144 void ide_tf_dump(const char *, struct ide_taskfile *);
1145
1146 void ide_exec_command(ide_hwif_t *, u8);
1147 u8 ide_read_status(ide_hwif_t *);
1148 u8 ide_read_altstatus(ide_hwif_t *);
1149 u8 ide_read_sff_dma_status(ide_hwif_t *);
1150
1151 void ide_set_irq(ide_hwif_t *, int);
1152
1153 void ide_tf_load(ide_drive_t *, ide_task_t *);
1154 void ide_tf_read(ide_drive_t *, ide_task_t *);
1155
1156 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1157 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1158
1159 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1160
1161 extern void SELECT_DRIVE(ide_drive_t *);
1162 void SELECT_MASK(ide_drive_t *, int);
1163
1164 u8 ide_read_error(ide_drive_t *);
1165 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1166
1167 extern int drive_is_ready(ide_drive_t *);
1168
1169 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1170
1171 int ide_check_atapi_device(ide_drive_t *, const char *);
1172
1173 void ide_init_pc(struct ide_atapi_pc *);
1174
1175 /*
1176 * Special requests for ide-tape block device strategy routine.
1177 *
1178 * In order to service a character device command, we add special requests to
1179 * the tail of our block device request queue and wait for their completion.
1180 */
1181 enum {
1182 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1183 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1184 REQ_IDETAPE_READ = (1 << 2),
1185 REQ_IDETAPE_WRITE = (1 << 3),
1186 };
1187
1188 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1189
1190 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1191 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1192 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1193 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1194 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1195
1196 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1197 {
1198 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1199 }
1200
1201 int ide_scsi_expiry(ide_drive_t *);
1202
1203 ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
1204
1205 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1206
1207 void task_end_request(ide_drive_t *, struct request *, u8);
1208
1209 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1210 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1211
1212 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1213
1214 extern int ide_driveid_update(ide_drive_t *);
1215 extern int ide_config_drive_speed(ide_drive_t *, u8);
1216 extern u8 eighty_ninty_three (ide_drive_t *);
1217 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1218
1219 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1220
1221 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1222
1223 extern void ide_timer_expiry(unsigned long);
1224 extern irqreturn_t ide_intr(int irq, void *dev_id);
1225 extern void do_ide_request(struct request_queue *);
1226
1227 void ide_init_disk(struct gendisk *, ide_drive_t *);
1228
1229 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1230 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1231 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1232 #else
1233 #define ide_pci_register_driver(d) pci_register_driver(d)
1234 #endif
1235
1236 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1237 hw_regs_t *, hw_regs_t **);
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 typedef struct ide_pci_enablebit_s {
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 } ide_pci_enablebit_t;
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 /* use legacy IRQs */
1306 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1307 /* force use of legacy IRQs */
1308 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1309 /* limit LBA48 requests to 256 sectors */
1310 IDE_HFLAG_RQSIZE_256 = (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 /* serialize ports if DMA is possible (for sl82c105) */
1316 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1317 /* force host out of "simplex" mode */
1318 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1319 /* DSC overlap is unsupported */
1320 IDE_HFLAG_NO_DSC = (1 << 29),
1321 /* never use 32-bit I/O ops */
1322 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1323 /* never unmask IRQs */
1324 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1325 };
1326
1327 #ifdef CONFIG_BLK_DEV_OFFBOARD
1328 # define IDE_HFLAG_OFF_BOARD 0
1329 #else
1330 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1331 #endif
1332
1333 struct ide_port_info {
1334 char *name;
1335 unsigned int (*init_chipset)(struct pci_dev *);
1336 void (*init_iops)(ide_hwif_t *);
1337 void (*init_hwif)(ide_hwif_t *);
1338 int (*init_dma)(ide_hwif_t *,
1339 const struct ide_port_info *);
1340
1341 const struct ide_tp_ops *tp_ops;
1342 const struct ide_port_ops *port_ops;
1343 const struct ide_dma_ops *dma_ops;
1344
1345 ide_pci_enablebit_t enablebits[2];
1346 hwif_chipset_t chipset;
1347 u32 host_flags;
1348 u8 pio_mask;
1349 u8 swdma_mask;
1350 u8 mwdma_mask;
1351 u8 udma_mask;
1352 };
1353
1354 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1355 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1356 const struct ide_port_info *, void *);
1357 void ide_pci_remove(struct pci_dev *);
1358
1359 #ifdef CONFIG_PM
1360 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1361 int ide_pci_resume(struct pci_dev *);
1362 #else
1363 #define ide_pci_suspend NULL
1364 #define ide_pci_resume NULL
1365 #endif
1366
1367 void ide_map_sg(ide_drive_t *, struct request *);
1368 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1369
1370 #define BAD_DMA_DRIVE 0
1371 #define GOOD_DMA_DRIVE 1
1372
1373 struct drive_list_entry {
1374 const char *id_model;
1375 const char *id_firmware;
1376 };
1377
1378 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1379
1380 #ifdef CONFIG_BLK_DEV_IDEDMA
1381 int __ide_dma_bad_drive(ide_drive_t *);
1382 int ide_id_dma_bug(ide_drive_t *);
1383
1384 u8 ide_find_dma_mode(ide_drive_t *, u8);
1385
1386 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1387 {
1388 return ide_find_dma_mode(drive, XFER_UDMA_6);
1389 }
1390
1391 void ide_dma_off_quietly(ide_drive_t *);
1392 void ide_dma_off(ide_drive_t *);
1393 void ide_dma_on(ide_drive_t *);
1394 int ide_set_dma(ide_drive_t *);
1395 void ide_check_dma_crc(ide_drive_t *);
1396 ide_startstop_t ide_dma_intr(ide_drive_t *);
1397
1398 int ide_build_sglist(ide_drive_t *, struct request *);
1399 void ide_destroy_dmatable(ide_drive_t *);
1400
1401 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1402 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1403 int ide_allocate_dma_engine(ide_hwif_t *);
1404 void ide_release_dma_engine(ide_hwif_t *);
1405
1406 void ide_dma_host_set(ide_drive_t *, int);
1407 extern int ide_dma_setup(ide_drive_t *);
1408 void ide_dma_exec_cmd(ide_drive_t *, u8);
1409 extern void ide_dma_start(ide_drive_t *);
1410 extern int __ide_dma_end(ide_drive_t *);
1411 int ide_dma_test_irq(ide_drive_t *);
1412 extern void ide_dma_lost_irq(ide_drive_t *);
1413 extern void ide_dma_timeout(ide_drive_t *);
1414 extern const struct ide_dma_ops sff_dma_ops;
1415 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1416
1417 #else
1418 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1419 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1420 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1421 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1422 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1423 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1424 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1425 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1426 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1427 #endif /* CONFIG_BLK_DEV_IDEDMA */
1428
1429 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1430 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1431 #endif
1432
1433 #ifdef CONFIG_BLK_DEV_IDEACPI
1434 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1435 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1436 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1437 extern void ide_acpi_init(ide_hwif_t *hwif);
1438 void ide_acpi_port_init_devices(ide_hwif_t *);
1439 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1440 #else
1441 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1442 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1443 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1444 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1445 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1446 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1447 #endif
1448
1449 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1450 void ide_unregister(ide_hwif_t *);
1451
1452 void ide_register_region(struct gendisk *);
1453 void ide_unregister_region(struct gendisk *);
1454
1455 void ide_undecoded_slave(ide_drive_t *);
1456
1457 void ide_port_apply_params(ide_hwif_t *);
1458
1459 struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1460 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1461 void ide_host_free(struct ide_host *);
1462 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1463 hw_regs_t **);
1464 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1465 struct ide_host **);
1466 void ide_host_remove(struct ide_host *);
1467 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1468 void ide_port_unregister_devices(ide_hwif_t *);
1469 void ide_port_scan(ide_hwif_t *);
1470
1471 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1472 {
1473 return hwif->hwif_data;
1474 }
1475
1476 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1477 {
1478 hwif->hwif_data = data;
1479 }
1480
1481 const char *ide_xfer_verbose(u8 mode);
1482 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1483 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1484
1485 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1486 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1487
1488 struct ide_timing {
1489 u8 mode;
1490 u8 setup; /* t1 */
1491 u16 act8b; /* t2 for 8-bit io */
1492 u16 rec8b; /* t2i for 8-bit io */
1493 u16 cyc8b; /* t0 for 8-bit io */
1494 u16 active; /* t2 or tD */
1495 u16 recover; /* t2i or tK */
1496 u16 cycle; /* t0 */
1497 u16 udma; /* t2CYCTYP/2 */
1498 };
1499
1500 enum {
1501 IDE_TIMING_SETUP = (1 << 0),
1502 IDE_TIMING_ACT8B = (1 << 1),
1503 IDE_TIMING_REC8B = (1 << 2),
1504 IDE_TIMING_CYC8B = (1 << 3),
1505 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1506 IDE_TIMING_CYC8B,
1507 IDE_TIMING_ACTIVE = (1 << 4),
1508 IDE_TIMING_RECOVER = (1 << 5),
1509 IDE_TIMING_CYCLE = (1 << 6),
1510 IDE_TIMING_UDMA = (1 << 7),
1511 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1512 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1513 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1514 };
1515
1516 struct ide_timing *ide_timing_find_mode(u8);
1517 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1518 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1519 struct ide_timing *, unsigned int);
1520 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1521
1522 int ide_scan_pio_blacklist(char *);
1523
1524 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1525
1526 int ide_set_pio_mode(ide_drive_t *, u8);
1527 int ide_set_dma_mode(ide_drive_t *, u8);
1528
1529 void ide_set_pio(ide_drive_t *, u8);
1530
1531 static inline void ide_set_max_pio(ide_drive_t *drive)
1532 {
1533 ide_set_pio(drive, 255);
1534 }
1535
1536 extern spinlock_t ide_lock;
1537 extern struct mutex ide_cfg_mtx;
1538 /*
1539 * Structure locking:
1540 *
1541 * ide_cfg_mtx and ide_lock together protect changes to
1542 * ide_hwif_t->{next,hwgroup}
1543 * ide_drive_t->next
1544 *
1545 * ide_hwgroup_t->busy: ide_lock
1546 * ide_hwgroup_t->hwif: ide_lock
1547 * ide_hwif_t->mate: constant, no locking
1548 * ide_drive_t->hwif: constant, no locking
1549 */
1550
1551 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1552
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->drives[(drive->dn ^ 1) & 1];
1569
1570 return peer->present ? peer : NULL;
1571 }
1572 #endif /* _IDE_H */
Linux kernel - Deliverables
This page took 0.062074 seconds and 4 git commands to generate.