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ide: add CONFIG_IDE_ARCH_OBSOLETE_INIT
[firewire-audio.git] / include / linux / ide.h
blob39b76aaaa1293cbd8de7e4254ff774f6d343c2a9
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/hdreg.h>
12 #include <linux/hdsmart.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/device.h>
19 #include <linux/pci.h>
20 #include <linux/completion.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/semaphore.h>
28 #include <asm/mutex.h>
29
30 /******************************************************************************
31 * IDE driver configuration options (play with these as desired):
32 *
33 * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary
34 */
35 #define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */
36
37 #ifndef SUPPORT_SLOW_DATA_PORTS /* 1 to support slow data ports */
38 #define SUPPORT_SLOW_DATA_PORTS 1 /* 0 to reduce kernel size */
39 #endif
40 #ifndef SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */
41 #define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */
42 #endif
43 #ifndef OK_TO_RESET_CONTROLLER /* 1 needed for good error recovery */
44 #define OK_TO_RESET_CONTROLLER 1 /* 0 for use with AH2372A/B interface */
45 #endif
46
47 #ifndef DISABLE_IRQ_NOSYNC
48 #define DISABLE_IRQ_NOSYNC 0
49 #endif
50
51 /*
52 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
53 * number.
54 */
55
56 #define IDE_NO_IRQ (-1)
57
58 /*
59 * "No user-serviceable parts" beyond this point :)
60 *****************************************************************************/
61
62 typedef unsigned char byte; /* used everywhere */
63
64 /*
65 * Probably not wise to fiddle with these
66 */
67 #define ERROR_MAX 8 /* Max read/write errors per sector */
68 #define ERROR_RESET 3 /* Reset controller every 4th retry */
69 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
70
71 /*
72 * Tune flags
73 */
74 #define IDE_TUNE_NOAUTO 2
75 #define IDE_TUNE_AUTO 1
76 #define IDE_TUNE_DEFAULT 0
77
78 /*
79 * state flags
80 */
81
82 #define DMA_PIO_RETRY 1 /* retrying in PIO */
83
84 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
85 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
86
87 /*
88 * Definitions for accessing IDE controller registers
89 */
90 #define IDE_NR_PORTS (10)
91
92 #define IDE_DATA_OFFSET (0)
93 #define IDE_ERROR_OFFSET (1)
94 #define IDE_NSECTOR_OFFSET (2)
95 #define IDE_SECTOR_OFFSET (3)
96 #define IDE_LCYL_OFFSET (4)
97 #define IDE_HCYL_OFFSET (5)
98 #define IDE_SELECT_OFFSET (6)
99 #define IDE_STATUS_OFFSET (7)
100 #define IDE_CONTROL_OFFSET (8)
101 #define IDE_IRQ_OFFSET (9)
102
103 #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
104 #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
105
106 #define IDE_CONTROL_OFFSET_HOB (7)
107
108 #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
109 #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
110 #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
111 #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
112 #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
113 #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
114 #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
115 #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
116 #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
117 #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
118
119 #define IDE_FEATURE_REG IDE_ERROR_REG
120 #define IDE_COMMAND_REG IDE_STATUS_REG
121 #define IDE_ALTSTATUS_REG IDE_CONTROL_REG
122 #define IDE_IREASON_REG IDE_NSECTOR_REG
123 #define IDE_BCOUNTL_REG IDE_LCYL_REG
124 #define IDE_BCOUNTH_REG IDE_HCYL_REG
125
126 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
127 #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
128 #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
129 #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
130 #define DRIVE_READY (READY_STAT | SEEK_STAT)
131 #define DATA_READY (DRQ_STAT)
132
133 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
134
135 #define SATA_NR_PORTS (3) /* 16 possible ?? */
136
137 #define SATA_STATUS_OFFSET (0)
138 #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
139 #define SATA_ERROR_OFFSET (1)
140 #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
141 #define SATA_CONTROL_OFFSET (2)
142 #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
143
144 #define SATA_MISC_OFFSET (0)
145 #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
146 #define SATA_PHY_OFFSET (1)
147 #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
148 #define SATA_IEN_OFFSET (2)
149 #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
150
151 /*
152 * Our Physical Region Descriptor (PRD) table should be large enough
153 * to handle the biggest I/O request we are likely to see. Since requests
154 * can have no more than 256 sectors, and since the typical blocksize is
155 * two or more sectors, we could get by with a limit of 128 entries here for
156 * the usual worst case. Most requests seem to include some contiguous blocks,
157 * further reducing the number of table entries required.
158 *
159 * The driver reverts to PIO mode for individual requests that exceed
160 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
161 * 100% of all crazy scenarios here is not necessary.
162 *
163 * As it turns out though, we must allocate a full 4KB page for this,
164 * so the two PRD tables (ide0 & ide1) will each get half of that,
165 * allowing each to have about 256 entries (8 bytes each) from this.
166 */
167 #define PRD_BYTES 8
168 #define PRD_ENTRIES 256
169
170 /*
171 * Some more useful definitions
172 */
173 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
174 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
175 #define SECTOR_SIZE 512
176 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
177 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
178
179 /*
180 * Timeouts for various operations:
181 */
182 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
183 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
184 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
185 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
186 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
187 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
188
189 /*
190 * Check for an interrupt and acknowledge the interrupt status
191 */
192 struct hwif_s;
193 typedef int (ide_ack_intr_t)(struct hwif_s *);
194
195 #ifndef NO_DMA
196 #define NO_DMA 255
197 #endif
198
199 /*
200 * hwif_chipset_t is used to keep track of the specific hardware
201 * chipset used by each IDE interface, if known.
202 */
203 enum { ide_unknown, ide_generic, ide_pci,
204 ide_cmd640, ide_dtc2278, ide_ali14xx,
205 ide_qd65xx, ide_umc8672, ide_ht6560b,
206 ide_rz1000, ide_trm290,
207 ide_cmd646, ide_cy82c693, ide_4drives,
208 ide_pmac, ide_etrax100, ide_acorn,
209 ide_au1xxx, ide_forced
210 };
211
212 typedef u8 hwif_chipset_t;
213
214 /*
215 * Structure to hold all information about the location of this port
216 */
217 typedef struct hw_regs_s {
218 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
219 int irq; /* our irq number */
220 int dma; /* our dma entry */
221 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
222 hwif_chipset_t chipset;
223 struct device *dev;
224 } hw_regs_t;
225
226 struct hwif_s * ide_find_port(unsigned long);
227
228 int ide_register_hw(hw_regs_t *, void (*)(struct hwif_s *), int,
229 struct hwif_s **);
230
231 void ide_setup_ports( hw_regs_t *hw,
232 unsigned long base,
233 int *offsets,
234 unsigned long ctrl,
235 unsigned long intr,
236 ide_ack_intr_t *ack_intr,
237 #if 0
238 ide_io_ops_t *iops,
239 #endif
240 int irq);
241
242 static inline void ide_std_init_ports(hw_regs_t *hw,
243 unsigned long io_addr,
244 unsigned long ctl_addr)
245 {
246 unsigned int i;
247
248 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
249 hw->io_ports[i] = io_addr++;
250
251 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
252 }
253
254 #include <asm/ide.h>
255
256 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
257 #undef MAX_HWIFS
258 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
259 #endif
260
261 /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
262 #ifndef IDE_ARCH_OBSOLETE_DEFAULTS
263 # define ide_default_io_base(index) (0)
264 # define ide_default_irq(base) (0)
265 # define ide_init_default_irq(base) (0)
266 #endif
267
268 #ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
269 static inline void ide_init_hwif_ports(hw_regs_t *hw,
270 unsigned long io_addr,
271 unsigned long ctl_addr,
272 int *irq)
273 {
274 if (!ctl_addr)
275 ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr));
276 else
277 ide_std_init_ports(hw, io_addr, ctl_addr);
278
279 if (irq)
280 *irq = 0;
281
282 hw->io_ports[IDE_IRQ_OFFSET] = 0;
283
284 #ifdef CONFIG_PPC32
285 if (ppc_ide_md.ide_init_hwif)
286 ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq);
287 #endif
288 }
289 #else
290 static inline void ide_init_hwif_ports(hw_regs_t *hw,
291 unsigned long io_addr,
292 unsigned long ctl_addr,
293 int *irq)
294 {
295 if (io_addr || ctl_addr)
296 printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
297 }
298 #endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
299
300 /* Currently only m68k, apus and m8xx need it */
301 #ifndef IDE_ARCH_ACK_INTR
302 # define ide_ack_intr(hwif) (1)
303 #endif
304
305 /* Currently only Atari needs it */
306 #ifndef IDE_ARCH_LOCK
307 # define ide_release_lock() do {} while (0)
308 # define ide_get_lock(hdlr, data) do {} while (0)
309 #endif /* IDE_ARCH_LOCK */
310
311 /*
312 * Now for the data we need to maintain per-drive: ide_drive_t
313 */
314
315 #define ide_scsi 0x21
316 #define ide_disk 0x20
317 #define ide_optical 0x7
318 #define ide_cdrom 0x5
319 #define ide_tape 0x1
320 #define ide_floppy 0x0
321
322 /*
323 * Special Driver Flags
324 *
325 * set_geometry : respecify drive geometry
326 * recalibrate : seek to cyl 0
327 * set_multmode : set multmode count
328 * set_tune : tune interface for drive
329 * serviced : service command
330 * reserved : unused
331 */
332 typedef union {
333 unsigned all : 8;
334 struct {
335 #if defined(__LITTLE_ENDIAN_BITFIELD)
336 unsigned set_geometry : 1;
337 unsigned recalibrate : 1;
338 unsigned set_multmode : 1;
339 unsigned set_tune : 1;
340 unsigned serviced : 1;
341 unsigned reserved : 3;
342 #elif defined(__BIG_ENDIAN_BITFIELD)
343 unsigned reserved : 3;
344 unsigned serviced : 1;
345 unsigned set_tune : 1;
346 unsigned set_multmode : 1;
347 unsigned recalibrate : 1;
348 unsigned set_geometry : 1;
349 #else
350 #error "Please fix <asm/byteorder.h>"
351 #endif
352 } b;
353 } special_t;
354
355 /*
356 * ATA DATA Register Special.
357 * ATA NSECTOR Count Register().
358 * ATAPI Byte Count Register.
359 */
360 typedef union {
361 unsigned all :16;
362 struct {
363 #if defined(__LITTLE_ENDIAN_BITFIELD)
364 unsigned low :8; /* LSB */
365 unsigned high :8; /* MSB */
366 #elif defined(__BIG_ENDIAN_BITFIELD)
367 unsigned high :8; /* MSB */
368 unsigned low :8; /* LSB */
369 #else
370 #error "Please fix <asm/byteorder.h>"
371 #endif
372 } b;
373 } ata_nsector_t, ata_data_t, atapi_bcount_t;
374
375 /*
376 * ATA-IDE Select Register, aka Device-Head
377 *
378 * head : always zeros here
379 * unit : drive select number: 0/1
380 * bit5 : always 1
381 * lba : using LBA instead of CHS
382 * bit7 : always 1
383 */
384 typedef union {
385 unsigned all : 8;
386 struct {
387 #if defined(__LITTLE_ENDIAN_BITFIELD)
388 unsigned head : 4;
389 unsigned unit : 1;
390 unsigned bit5 : 1;
391 unsigned lba : 1;
392 unsigned bit7 : 1;
393 #elif defined(__BIG_ENDIAN_BITFIELD)
394 unsigned bit7 : 1;
395 unsigned lba : 1;
396 unsigned bit5 : 1;
397 unsigned unit : 1;
398 unsigned head : 4;
399 #else
400 #error "Please fix <asm/byteorder.h>"
401 #endif
402 } b;
403 } select_t, ata_select_t;
404
405 /*
406 * The ATA-IDE Status Register.
407 * The ATAPI Status Register.
408 *
409 * check : Error occurred
410 * idx : Index Error
411 * corr : Correctable error occurred
412 * drq : Data is request by the device
413 * dsc : Disk Seek Complete : ata
414 * : Media access command finished : atapi
415 * df : Device Fault : ata
416 * : Reserved : atapi
417 * drdy : Ready, Command Mode Capable : ata
418 * : Ignored for ATAPI commands : atapi
419 * bsy : Disk is Busy
420 * : The device has access to the command block
421 */
422 typedef union {
423 unsigned all :8;
424 struct {
425 #if defined(__LITTLE_ENDIAN_BITFIELD)
426 unsigned check :1;
427 unsigned idx :1;
428 unsigned corr :1;
429 unsigned drq :1;
430 unsigned dsc :1;
431 unsigned df :1;
432 unsigned drdy :1;
433 unsigned bsy :1;
434 #elif defined(__BIG_ENDIAN_BITFIELD)
435 unsigned bsy :1;
436 unsigned drdy :1;
437 unsigned df :1;
438 unsigned dsc :1;
439 unsigned drq :1;
440 unsigned corr :1;
441 unsigned idx :1;
442 unsigned check :1;
443 #else
444 #error "Please fix <asm/byteorder.h>"
445 #endif
446 } b;
447 } ata_status_t, atapi_status_t;
448
449 /*
450 * ATAPI Feature Register
451 *
452 * dma : Using DMA or PIO
453 * reserved321 : Reserved
454 * reserved654 : Reserved (Tag Type)
455 * reserved7 : Reserved
456 */
457 typedef union {
458 unsigned all :8;
459 struct {
460 #if defined(__LITTLE_ENDIAN_BITFIELD)
461 unsigned dma :1;
462 unsigned reserved321 :3;
463 unsigned reserved654 :3;
464 unsigned reserved7 :1;
465 #elif defined(__BIG_ENDIAN_BITFIELD)
466 unsigned reserved7 :1;
467 unsigned reserved654 :3;
468 unsigned reserved321 :3;
469 unsigned dma :1;
470 #else
471 #error "Please fix <asm/byteorder.h>"
472 #endif
473 } b;
474 } atapi_feature_t;
475
476 /*
477 * ATAPI Interrupt Reason Register.
478 *
479 * cod : Information transferred is command (1) or data (0)
480 * io : The device requests us to read (1) or write (0)
481 * reserved : Reserved
482 */
483 typedef union {
484 unsigned all :8;
485 struct {
486 #if defined(__LITTLE_ENDIAN_BITFIELD)
487 unsigned cod :1;
488 unsigned io :1;
489 unsigned reserved :6;
490 #elif defined(__BIG_ENDIAN_BITFIELD)
491 unsigned reserved :6;
492 unsigned io :1;
493 unsigned cod :1;
494 #else
495 #error "Please fix <asm/byteorder.h>"
496 #endif
497 } b;
498 } atapi_ireason_t;
499
500 /*
501 * The ATAPI error register.
502 *
503 * ili : Illegal Length Indication
504 * eom : End Of Media Detected
505 * abrt : Aborted command - As defined by ATA
506 * mcr : Media Change Requested - As defined by ATA
507 * sense_key : Sense key of the last failed packet command
508 */
509 typedef union {
510 unsigned all :8;
511 struct {
512 #if defined(__LITTLE_ENDIAN_BITFIELD)
513 unsigned ili :1;
514 unsigned eom :1;
515 unsigned abrt :1;
516 unsigned mcr :1;
517 unsigned sense_key :4;
518 #elif defined(__BIG_ENDIAN_BITFIELD)
519 unsigned sense_key :4;
520 unsigned mcr :1;
521 unsigned abrt :1;
522 unsigned eom :1;
523 unsigned ili :1;
524 #else
525 #error "Please fix <asm/byteorder.h>"
526 #endif
527 } b;
528 } atapi_error_t;
529
530 /*
531 * Status returned from various ide_ functions
532 */
533 typedef enum {
534 ide_stopped, /* no drive operation was started */
535 ide_started, /* a drive operation was started, handler was set */
536 } ide_startstop_t;
537
538 struct ide_driver_s;
539 struct ide_settings_s;
540
541 #ifdef CONFIG_BLK_DEV_IDEACPI
542 struct ide_acpi_drive_link;
543 struct ide_acpi_hwif_link;
544 #endif
545
546 typedef struct ide_drive_s {
547 char name[4]; /* drive name, such as "hda" */
548 char driver_req[10]; /* requests specific driver */
549
550 struct request_queue *queue; /* request queue */
551
552 struct request *rq; /* current request */
553 struct ide_drive_s *next; /* circular list of hwgroup drives */
554 void *driver_data; /* extra driver data */
555 struct hd_driveid *id; /* drive model identification info */
556 #ifdef CONFIG_IDE_PROC_FS
557 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
558 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
559 #endif
560 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
561
562 unsigned long sleep; /* sleep until this time */
563 unsigned long service_start; /* time we started last request */
564 unsigned long service_time; /* service time of last request */
565 unsigned long timeout; /* max time to wait for irq */
566
567 special_t special; /* special action flags */
568 select_t select; /* basic drive/head select reg value */
569
570 u8 keep_settings; /* restore settings after drive reset */
571 u8 using_dma; /* disk is using dma for read/write */
572 u8 retry_pio; /* retrying dma capable host in pio */
573 u8 state; /* retry state */
574 u8 waiting_for_dma; /* dma currently in progress */
575 u8 unmask; /* okay to unmask other irqs */
576 u8 bswap; /* byte swap data */
577 u8 noflush; /* don't attempt flushes */
578 u8 dsc_overlap; /* DSC overlap */
579 u8 nice1; /* give potential excess bandwidth */
580
581 unsigned present : 1; /* drive is physically present */
582 unsigned dead : 1; /* device ejected hint */
583 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
584 unsigned noprobe : 1; /* from: hdx=noprobe */
585 unsigned removable : 1; /* 1 if need to do check_media_change */
586 unsigned attach : 1; /* needed for removable devices */
587 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
588 unsigned no_unmask : 1; /* disallow setting unmask bit */
589 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
590 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
591 unsigned nice0 : 1; /* give obvious excess bandwidth */
592 unsigned nice2 : 1; /* give a share in our own bandwidth */
593 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
594 unsigned nodma : 1; /* disallow DMA */
595 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
596 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
597 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
598 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
599 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
600 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
601 unsigned post_reset : 1;
602 unsigned udma33_warned : 1;
603
604 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
605 u8 quirk_list; /* considered quirky, set for a specific host */
606 u8 init_speed; /* transfer rate set at boot */
607 u8 current_speed; /* current transfer rate set */
608 u8 desired_speed; /* desired transfer rate set */
609 u8 dn; /* now wide spread use */
610 u8 wcache; /* status of write cache */
611 u8 acoustic; /* acoustic management */
612 u8 media; /* disk, cdrom, tape, floppy, ... */
613 u8 ctl; /* "normal" value for IDE_CONTROL_REG */
614 u8 ready_stat; /* min status value for drive ready */
615 u8 mult_count; /* current multiple sector setting */
616 u8 mult_req; /* requested multiple sector setting */
617 u8 tune_req; /* requested drive tuning setting */
618 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
619 u8 bad_wstat; /* used for ignoring WRERR_STAT */
620 u8 nowerr; /* used for ignoring WRERR_STAT */
621 u8 sect0; /* offset of first sector for DM6:DDO */
622 u8 head; /* "real" number of heads */
623 u8 sect; /* "real" sectors per track */
624 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
625 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
626
627 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
628 unsigned int cyl; /* "real" number of cyls */
629 unsigned int drive_data; /* used by set_pio_mode/selectproc */
630 unsigned int failures; /* current failure count */
631 unsigned int max_failures; /* maximum allowed failure count */
632 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
633
634 u64 capacity64; /* total number of sectors */
635
636 int lun; /* logical unit */
637 int crc_count; /* crc counter to reduce drive speed */
638 #ifdef CONFIG_BLK_DEV_IDEACPI
639 struct ide_acpi_drive_link *acpidata;
640 #endif
641 struct list_head list;
642 struct device gendev;
643 struct completion gendev_rel_comp; /* to deal with device release() */
644 } ide_drive_t;
645
646 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
647
648 #define IDE_CHIPSET_PCI_MASK \
649 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
650 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
651
652 struct ide_pci_device_s;
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 char name[6]; /* name of interface, eg. "ide0" */
661
662 /* task file registers for pata and sata */
663 unsigned long io_ports[IDE_NR_PORTS];
664 unsigned long sata_scr[SATA_NR_PORTS];
665 unsigned long sata_misc[SATA_NR_PORTS];
666
667 hw_regs_t hw; /* Hardware info */
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 u8 straight8; /* Alan's straight 8 check */
674 u8 bus_state; /* power state of the IDE bus */
675
676 u16 host_flags;
677
678 u8 pio_mask;
679
680 u8 ultra_mask;
681 u8 mwdma_mask;
682 u8 swdma_mask;
683
684 u8 cbl; /* cable type */
685
686 hwif_chipset_t chipset; /* sub-module for tuning.. */
687
688 struct pci_dev *pci_dev; /* for pci chipsets */
689 struct ide_pci_device_s *cds; /* chipset device struct */
690
691 void (*rw_disk)(ide_drive_t *, struct request *);
692
693 #if 0
694 ide_hwif_ops_t *hwifops;
695 #else
696 /* routine to program host for PIO mode */
697 void (*set_pio_mode)(ide_drive_t *, const u8);
698 /* routine to program host for DMA mode */
699 void (*set_dma_mode)(ide_drive_t *, const u8);
700 /* tweaks hardware to select drive */
701 void (*selectproc)(ide_drive_t *);
702 /* chipset polling based on hba specifics */
703 int (*reset_poll)(ide_drive_t *);
704 /* chipset specific changes to default for device-hba resets */
705 void (*pre_reset)(ide_drive_t *);
706 /* routine to reset controller after a disk reset */
707 void (*resetproc)(ide_drive_t *);
708 /* special interrupt handling for shared pci interrupts */
709 void (*intrproc)(ide_drive_t *);
710 /* special host masking for drive selection */
711 void (*maskproc)(ide_drive_t *, int);
712 /* check host's drive quirk list */
713 int (*quirkproc)(ide_drive_t *);
714 /* driver soft-power interface */
715 int (*busproc)(ide_drive_t *, int);
716 #endif
717 u8 (*mdma_filter)(ide_drive_t *);
718 u8 (*udma_filter)(ide_drive_t *);
719
720 void (*fixup)(struct hwif_s *);
721
722 void (*ata_input_data)(ide_drive_t *, void *, u32);
723 void (*ata_output_data)(ide_drive_t *, void *, u32);
724
725 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
726 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
727
728 int (*dma_setup)(ide_drive_t *);
729 void (*dma_exec_cmd)(ide_drive_t *, u8);
730 void (*dma_start)(ide_drive_t *);
731 int (*ide_dma_end)(ide_drive_t *drive);
732 int (*ide_dma_on)(ide_drive_t *drive);
733 void (*dma_off_quietly)(ide_drive_t *drive);
734 int (*ide_dma_test_irq)(ide_drive_t *drive);
735 void (*ide_dma_clear_irq)(ide_drive_t *drive);
736 void (*dma_host_on)(ide_drive_t *drive);
737 void (*dma_host_off)(ide_drive_t *drive);
738 void (*dma_lost_irq)(ide_drive_t *drive);
739 void (*dma_timeout)(ide_drive_t *drive);
740
741 void (*OUTB)(u8 addr, unsigned long port);
742 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
743 void (*OUTW)(u16 addr, unsigned long port);
744 void (*OUTSW)(unsigned long port, void *addr, u32 count);
745 void (*OUTSL)(unsigned long port, void *addr, u32 count);
746
747 u8 (*INB)(unsigned long port);
748 u16 (*INW)(unsigned long port);
749 void (*INSW)(unsigned long port, void *addr, u32 count);
750 void (*INSL)(unsigned long port, void *addr, u32 count);
751
752 /* dma physical region descriptor table (cpu view) */
753 unsigned int *dmatable_cpu;
754 /* dma physical region descriptor table (dma view) */
755 dma_addr_t dmatable_dma;
756 /* Scatter-gather list used to build the above */
757 struct scatterlist *sg_table;
758 int sg_max_nents; /* Maximum number of entries in it */
759 int sg_nents; /* Current number of entries in it */
760 int sg_dma_direction; /* dma transfer direction */
761
762 /* data phase of the active command (currently only valid for PIO/DMA) */
763 int data_phase;
764
765 unsigned int nsect;
766 unsigned int nleft;
767 struct scatterlist *cursg;
768 unsigned int cursg_ofs;
769
770 int rqsize; /* max sectors per request */
771 int irq; /* our irq number */
772
773 unsigned long dma_master; /* reference base addr dmabase */
774 unsigned long dma_base; /* base addr for dma ports */
775 unsigned long dma_command; /* dma command register */
776 unsigned long dma_vendor1; /* dma vendor 1 register */
777 unsigned long dma_status; /* dma status register */
778 unsigned long dma_vendor3; /* dma vendor 3 register */
779 unsigned long dma_prdtable; /* actual prd table address */
780
781 unsigned long config_data; /* for use by chipset-specific code */
782 unsigned long select_data; /* for use by chipset-specific code */
783
784 unsigned long extra_base; /* extra addr for dma ports */
785 unsigned extra_ports; /* number of extra dma ports */
786
787 unsigned noprobe : 1; /* don't probe for this interface */
788 unsigned present : 1; /* this interface exists */
789 unsigned hold : 1; /* this interface is always present */
790 unsigned serialized : 1; /* serialized all channel operation */
791 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
792 unsigned reset : 1; /* reset after probe */
793 unsigned auto_poll : 1; /* supports nop auto-poll */
794 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
795 unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
796 unsigned mmio : 1; /* host uses MMIO */
797
798 struct device gendev;
799 struct completion gendev_rel_comp; /* To deal with device release() */
800
801 void *hwif_data; /* extra hwif data */
802
803 unsigned dma;
804
805 #ifdef CONFIG_BLK_DEV_IDEACPI
806 struct ide_acpi_hwif_link *acpidata;
807 #endif
808 } ____cacheline_internodealigned_in_smp ide_hwif_t;
809
810 /*
811 * internal ide interrupt handler type
812 */
813 typedef ide_startstop_t (ide_pre_handler_t)(ide_drive_t *, struct request *);
814 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
815 typedef int (ide_expiry_t)(ide_drive_t *);
816
817 typedef struct hwgroup_s {
818 /* irq handler, if active */
819 ide_startstop_t (*handler)(ide_drive_t *);
820 /* irq handler, suspended if active */
821 ide_startstop_t (*handler_save)(ide_drive_t *);
822 /* BOOL: protects all fields below */
823 volatile int busy;
824 /* BOOL: wake us up on timer expiry */
825 unsigned int sleeping : 1;
826 /* BOOL: polling active & poll_timeout field valid */
827 unsigned int polling : 1;
828 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
829 unsigned int resetting : 1;
830
831 /* current drive */
832 ide_drive_t *drive;
833 /* ptr to current hwif in linked-list */
834 ide_hwif_t *hwif;
835
836 /* for pci chipsets */
837 struct pci_dev *pci_dev;
838 /* chipset device struct */
839 struct ide_pci_device_s *cds;
840
841 /* current request */
842 struct request *rq;
843 /* failsafe timer */
844 struct timer_list timer;
845 /* local copy of current write rq */
846 struct request wrq;
847 /* timeout value during long polls */
848 unsigned long poll_timeout;
849 /* queried upon timeouts */
850 int (*expiry)(ide_drive_t *);
851 /* ide_system_bus_speed */
852 int pio_clock;
853 int req_gen;
854 int req_gen_timer;
855
856 unsigned char cmd_buf[4];
857 } ide_hwgroup_t;
858
859 typedef struct ide_driver_s ide_driver_t;
860
861 extern struct mutex ide_setting_mtx;
862
863 int set_io_32bit(ide_drive_t *, int);
864 int set_pio_mode(ide_drive_t *, int);
865 int set_using_dma(ide_drive_t *, int);
866
867 #ifdef CONFIG_IDE_PROC_FS
868 /*
869 * configurable drive settings
870 */
871
872 #define TYPE_INT 0
873 #define TYPE_BYTE 1
874 #define TYPE_SHORT 2
875
876 #define SETTING_READ (1 << 0)
877 #define SETTING_WRITE (1 << 1)
878 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
879
880 typedef int (ide_procset_t)(ide_drive_t *, int);
881 typedef struct ide_settings_s {
882 char *name;
883 int rw;
884 int data_type;
885 int min;
886 int max;
887 int mul_factor;
888 int div_factor;
889 void *data;
890 ide_procset_t *set;
891 int auto_remove;
892 struct ide_settings_s *next;
893 } ide_settings_t;
894
895 int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
896
897 /*
898 * /proc/ide interface
899 */
900 typedef struct {
901 const char *name;
902 mode_t mode;
903 read_proc_t *read_proc;
904 write_proc_t *write_proc;
905 } ide_proc_entry_t;
906
907 void proc_ide_create(void);
908 void proc_ide_destroy(void);
909 void ide_proc_register_port(ide_hwif_t *);
910 void ide_proc_unregister_port(ide_hwif_t *);
911 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
912 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
913
914 void ide_add_generic_settings(ide_drive_t *);
915
916 read_proc_t proc_ide_read_capacity;
917 read_proc_t proc_ide_read_geometry;
918
919 #ifdef CONFIG_BLK_DEV_IDEPCI
920 void ide_pci_create_host_proc(const char *, get_info_t *);
921 #endif
922
923 /*
924 * Standard exit stuff:
925 */
926 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
927 { \
928 len -= off; \
929 if (len < count) { \
930 *eof = 1; \
931 if (len <= 0) \
932 return 0; \
933 } else \
934 len = count; \
935 *start = page + off; \
936 return len; \
937 }
938 #else
939 static inline void proc_ide_create(void) { ; }
940 static inline void proc_ide_destroy(void) { ; }
941 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
942 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
943 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
944 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
945 static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
946 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
947 #endif
948
949 /*
950 * Power Management step value (rq->pm->pm_step).
951 *
952 * The step value starts at 0 (ide_pm_state_start_suspend) for a
953 * suspend operation or 1000 (ide_pm_state_start_resume) for a
954 * resume operation.
955 *
956 * For each step, the core calls the subdriver start_power_step() first.
957 * This can return:
958 * - ide_stopped : In this case, the core calls us back again unless
959 * step have been set to ide_power_state_completed.
960 * - ide_started : In this case, the channel is left busy until an
961 * async event (interrupt) occurs.
962 * Typically, start_power_step() will issue a taskfile request with
963 * do_rw_taskfile().
964 *
965 * Upon reception of the interrupt, the core will call complete_power_step()
966 * with the error code if any. This routine should update the step value
967 * and return. It should not start a new request. The core will call
968 * start_power_step for the new step value, unless step have been set to
969 * ide_power_state_completed.
970 *
971 * Subdrivers are expected to define their own additional power
972 * steps from 1..999 for suspend and from 1001..1999 for resume,
973 * other values are reserved for future use.
974 */
975
976 enum {
977 ide_pm_state_completed = -1,
978 ide_pm_state_start_suspend = 0,
979 ide_pm_state_start_resume = 1000,
980 };
981
982 /*
983 * Subdrivers support.
984 *
985 * The gendriver.owner field should be set to the module owner of this driver.
986 * The gendriver.name field should be set to the name of this driver
987 */
988 struct ide_driver_s {
989 const char *version;
990 u8 media;
991 unsigned supports_dsc_overlap : 1;
992 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
993 int (*end_request)(ide_drive_t *, int, int);
994 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
995 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
996 struct device_driver gen_driver;
997 int (*probe)(ide_drive_t *);
998 void (*remove)(ide_drive_t *);
999 void (*resume)(ide_drive_t *);
1000 void (*shutdown)(ide_drive_t *);
1001 #ifdef CONFIG_IDE_PROC_FS
1002 ide_proc_entry_t *proc;
1003 #endif
1004 };
1005
1006 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1007
1008 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
1009
1010 /*
1011 * ide_hwifs[] is the master data structure used to keep track
1012 * of just about everything in ide.c. Whenever possible, routines
1013 * should be using pointers to a drive (ide_drive_t *) or
1014 * pointers to a hwif (ide_hwif_t *), rather than indexing this
1015 * structure directly (the allocation/layout may change!).
1016 *
1017 */
1018 #ifndef _IDE_C
1019 extern ide_hwif_t ide_hwifs[]; /* master data repository */
1020 #endif
1021 extern int noautodma;
1022
1023 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1024 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1025 int uptodate, int nr_sectors);
1026
1027 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1028
1029 extern void ide_execute_command(ide_drive_t *, task_ioreg_t cmd, ide_handler_t *, unsigned int, ide_expiry_t *);
1030
1031 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1032
1033 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1034
1035 ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
1036
1037 extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
1038
1039 extern void ide_fix_driveid(struct hd_driveid *);
1040 /*
1041 * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
1042 * removing leading/trailing blanks and compressing internal blanks.
1043 * It is primarily used to tidy up the model name/number fields as
1044 * returned by the WIN_[P]IDENTIFY commands.
1045 *
1046 * (s, bytecount, byteswap)
1047 */
1048 extern void ide_fixstring(u8 *, const int, const int);
1049
1050 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1051
1052 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1053
1054 extern void ide_init_drive_cmd (struct request *rq);
1055
1056 /*
1057 * "action" parameter type for ide_do_drive_cmd() below.
1058 */
1059 typedef enum {
1060 ide_wait, /* insert rq at end of list, and wait for it */
1061 ide_preempt, /* insert rq in front of current request */
1062 ide_head_wait, /* insert rq in front of current request and wait for it */
1063 ide_end /* insert rq at end of list, but don't wait for it */
1064 } ide_action_t;
1065
1066 extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
1067
1068 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1069
1070 /*
1071 * Issue ATA command and wait for completion.
1072 * Use for implementing commands in kernel
1073 *
1074 * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
1075 */
1076 extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *);
1077
1078 typedef struct ide_task_s {
1079 /*
1080 * struct hd_drive_task_hdr tf;
1081 * task_struct_t tf;
1082 * struct hd_drive_hob_hdr hobf;
1083 * hob_struct_t hobf;
1084 */
1085 task_ioreg_t tfRegister[8];
1086 task_ioreg_t hobRegister[8];
1087 ide_reg_valid_t tf_out_flags;
1088 ide_reg_valid_t tf_in_flags;
1089 int data_phase;
1090 int command_type;
1091 ide_pre_handler_t *prehandler;
1092 ide_handler_t *handler;
1093 struct request *rq; /* copy of request */
1094 void *special; /* valid_t generally */
1095 } ide_task_t;
1096
1097 extern u32 ide_read_24(ide_drive_t *);
1098
1099 extern void SELECT_DRIVE(ide_drive_t *);
1100 extern void SELECT_INTERRUPT(ide_drive_t *);
1101 extern void SELECT_MASK(ide_drive_t *, int);
1102 extern void QUIRK_LIST(ide_drive_t *);
1103
1104 extern int drive_is_ready(ide_drive_t *);
1105
1106 /*
1107 * taskfile io for disks for now...and builds request from ide_ioctl
1108 */
1109 extern ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1110
1111 /*
1112 * Special Flagged Register Validation Caller
1113 */
1114 extern ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *);
1115
1116 extern ide_startstop_t set_multmode_intr(ide_drive_t *);
1117 extern ide_startstop_t set_geometry_intr(ide_drive_t *);
1118 extern ide_startstop_t recal_intr(ide_drive_t *);
1119 extern ide_startstop_t task_no_data_intr(ide_drive_t *);
1120 extern ide_startstop_t task_in_intr(ide_drive_t *);
1121 extern ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
1122
1123 extern int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *);
1124
1125 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1126 int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
1127 int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
1128
1129 extern int system_bus_clock(void);
1130
1131 extern int ide_driveid_update(ide_drive_t *);
1132 extern int ide_ata66_check(ide_drive_t *, ide_task_t *);
1133 extern int ide_config_drive_speed(ide_drive_t *, u8);
1134 extern u8 eighty_ninty_three (ide_drive_t *);
1135 extern int set_transfer(ide_drive_t *, ide_task_t *);
1136 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1137
1138 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1139
1140 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1141
1142 extern int ide_spin_wait_hwgroup(ide_drive_t *);
1143 extern void ide_timer_expiry(unsigned long);
1144 extern irqreturn_t ide_intr(int irq, void *dev_id);
1145 extern void do_ide_request(struct request_queue *);
1146
1147 void ide_init_disk(struct gendisk *, ide_drive_t *);
1148
1149 extern int ideprobe_init(void);
1150
1151 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1152 extern void ide_scan_pcibus(int scan_direction) __init;
1153 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1154 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1155 #else
1156 #define ide_pci_register_driver(d) pci_register_driver(d)
1157 #endif
1158
1159 void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, u8 *);
1160 extern void ide_setup_pci_noise (struct pci_dev *dev, struct ide_pci_device_s *d);
1161
1162 extern void default_hwif_iops(ide_hwif_t *);
1163 extern void default_hwif_mmiops(ide_hwif_t *);
1164 extern void default_hwif_transport(ide_hwif_t *);
1165
1166 typedef struct ide_pci_enablebit_s {
1167 u8 reg; /* byte pci reg holding the enable-bit */
1168 u8 mask; /* mask to isolate the enable-bit */
1169 u8 val; /* value of masked reg when "enabled" */
1170 } ide_pci_enablebit_t;
1171
1172 enum {
1173 /* Uses ISA control ports not PCI ones. */
1174 IDE_HFLAG_ISA_PORTS = (1 << 0),
1175 /* single port device */
1176 IDE_HFLAG_SINGLE = (1 << 1),
1177 /* don't use legacy PIO blacklist */
1178 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1179 /* don't use conservative PIO "downgrade" */
1180 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
1181 /* use PIO8/9 for prefetch off/on */
1182 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1183 /* use PIO6/7 for fast-devsel off/on */
1184 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1185 /* use 100-102 and 200-202 PIO values to set DMA modes */
1186 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1187 /*
1188 * keep DMA setting when programming PIO mode, may be used only
1189 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1190 */
1191 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1192 /* program host for the transfer mode after programming device */
1193 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1194 /* don't program host/device for the transfer mode ("smart" hosts) */
1195 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1196 /* trust BIOS for programming chipset/device for DMA */
1197 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1198 /* host uses VDMA */
1199 IDE_HFLAG_VDMA = (1 << 11),
1200 /* ATAPI DMA is unsupported */
1201 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1202 /* set if host is a "bootable" controller */
1203 IDE_HFLAG_BOOTABLE = (1 << 13),
1204 /* host doesn't support DMA */
1205 IDE_HFLAG_NO_DMA = (1 << 14),
1206 /* check if host is PCI IDE device before allowing DMA */
1207 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1208 /* host is CS5510/CS5520 */
1209 IDE_HFLAG_CS5520 = (1 << 16),
1210 /* no LBA48 */
1211 IDE_HFLAG_NO_LBA48 = (1 << 17),
1212 /* no LBA48 DMA */
1213 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1214 /* data FIFO is cleared by an error */
1215 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1216 /* serialize ports */
1217 IDE_HFLAG_SERIALIZE = (1 << 20),
1218 /* use legacy IRQs */
1219 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1220 /* force use of legacy IRQs */
1221 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1222 /* limit LBA48 requests to 256 sectors */
1223 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1224 /* use 32-bit I/O ops */
1225 IDE_HFLAG_IO_32BIT = (1 << 24),
1226 /* unmask IRQs */
1227 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1228 };
1229
1230 #ifdef CONFIG_BLK_DEV_OFFBOARD
1231 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1232 #else
1233 # define IDE_HFLAG_OFF_BOARD 0
1234 #endif
1235
1236 typedef struct ide_pci_device_s {
1237 char *name;
1238 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1239 void (*init_iops)(ide_hwif_t *);
1240 void (*init_hwif)(ide_hwif_t *);
1241 void (*init_dma)(ide_hwif_t *, unsigned long);
1242 void (*fixup)(ide_hwif_t *);
1243 ide_pci_enablebit_t enablebits[2];
1244 hwif_chipset_t chipset;
1245 unsigned int extra;
1246 u32 host_flags;
1247 u8 pio_mask;
1248 u8 swdma_mask;
1249 u8 mwdma_mask;
1250 u8 udma_mask;
1251 } ide_pci_device_t;
1252
1253 extern int ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);
1254 extern int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_device_t *);
1255
1256 void ide_map_sg(ide_drive_t *, struct request *);
1257 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1258
1259 #define BAD_DMA_DRIVE 0
1260 #define GOOD_DMA_DRIVE 1
1261
1262 struct drive_list_entry {
1263 const char *id_model;
1264 const char *id_firmware;
1265 };
1266
1267 int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
1268
1269 #ifdef CONFIG_BLK_DEV_IDEDMA
1270 int __ide_dma_bad_drive(ide_drive_t *);
1271
1272 u8 ide_find_dma_mode(ide_drive_t *, u8);
1273
1274 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1275 {
1276 return ide_find_dma_mode(drive, XFER_UDMA_6);
1277 }
1278
1279 void ide_dma_off(ide_drive_t *);
1280 void ide_dma_verbose(ide_drive_t *);
1281 int ide_set_dma(ide_drive_t *);
1282 ide_startstop_t ide_dma_intr(ide_drive_t *);
1283
1284 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1285 extern int ide_build_sglist(ide_drive_t *, struct request *);
1286 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1287 extern void ide_destroy_dmatable(ide_drive_t *);
1288 extern int ide_release_dma(ide_hwif_t *);
1289 extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
1290
1291 void ide_dma_host_off(ide_drive_t *);
1292 void ide_dma_off_quietly(ide_drive_t *);
1293 void ide_dma_host_on(ide_drive_t *);
1294 extern int __ide_dma_on(ide_drive_t *);
1295 extern int ide_dma_setup(ide_drive_t *);
1296 extern void ide_dma_start(ide_drive_t *);
1297 extern int __ide_dma_end(ide_drive_t *);
1298 extern void ide_dma_lost_irq(ide_drive_t *);
1299 extern void ide_dma_timeout(ide_drive_t *);
1300 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1301
1302 #else
1303 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1304 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1305 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1306 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1307 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1308 #endif /* CONFIG_BLK_DEV_IDEDMA */
1309
1310 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1311 static inline void ide_release_dma(ide_hwif_t *drive) {;}
1312 #endif
1313
1314 #ifdef CONFIG_BLK_DEV_IDEACPI
1315 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1316 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1317 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1318 extern void ide_acpi_init(ide_hwif_t *hwif);
1319 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1320 #else
1321 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1322 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1323 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1324 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1325 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1326 #endif
1327
1328 extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1329 extern void ide_hwif_release_regions(ide_hwif_t* hwif);
1330 extern void ide_unregister (unsigned int index);
1331
1332 void ide_register_region(struct gendisk *);
1333 void ide_unregister_region(struct gendisk *);
1334
1335 void ide_undecoded_slave(ide_hwif_t *);
1336
1337 int ide_device_add(u8 idx[4]);
1338
1339 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1340 {
1341 return hwif->hwif_data;
1342 }
1343
1344 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1345 {
1346 hwif->hwif_data = data;
1347 }
1348
1349 /* ide-lib.c */
1350 extern char *ide_xfer_verbose(u8 xfer_rate);
1351 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1352 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1353
1354 static inline int ide_dev_has_iordy(struct hd_driveid *id)
1355 {
1356 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1357 }
1358
1359 static inline int ide_dev_is_sata(struct hd_driveid *id)
1360 {
1361 /*
1362 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1363 * verifying that word 80 by casting it to a signed type --
1364 * this trick allows us to filter out the reserved values of
1365 * 0x0000 and 0xffff along with the earlier ATA revisions...
1366 */
1367 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1368 return 1;
1369 return 0;
1370 }
1371
1372 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1373
1374 typedef struct ide_pio_timings_s {
1375 int setup_time; /* Address setup (ns) minimum */
1376 int active_time; /* Active pulse (ns) minimum */
1377 int cycle_time; /* Cycle time (ns) minimum = */
1378 /* active + recovery (+ setup for some chips) */
1379 } ide_pio_timings_t;
1380
1381 unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
1382 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1383 extern const ide_pio_timings_t ide_pio_timings[6];
1384
1385 int ide_set_pio_mode(ide_drive_t *, u8);
1386 int ide_set_dma_mode(ide_drive_t *, u8);
1387
1388 void ide_set_pio(ide_drive_t *, u8);
1389
1390 static inline void ide_set_max_pio(ide_drive_t *drive)
1391 {
1392 ide_set_pio(drive, 255);
1393 }
1394
1395 extern spinlock_t ide_lock;
1396 extern struct mutex ide_cfg_mtx;
1397 /*
1398 * Structure locking:
1399 *
1400 * ide_cfg_mtx and ide_lock together protect changes to
1401 * ide_hwif_t->{next,hwgroup}
1402 * ide_drive_t->next
1403 *
1404 * ide_hwgroup_t->busy: ide_lock
1405 * ide_hwgroup_t->hwif: ide_lock
1406 * ide_hwif_t->mate: constant, no locking
1407 * ide_drive_t->hwif: constant, no locking
1408 */
1409
1410 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1411
1412 extern struct bus_type ide_bus_type;
1413
1414 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1415 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1416
1417 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1418 #define ide_id_has_flush_cache_ext(id) \
1419 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1420
1421 static inline int hwif_to_node(ide_hwif_t *hwif)
1422 {
1423 struct pci_dev *dev = hwif->pci_dev;
1424 return dev ? pcibus_to_node(dev->bus) : -1;
1425 }
1426
1427 static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
1428 {
1429 ide_hwif_t *hwif = HWIF(drive);
1430
1431 return &hwif->drives[(drive->dn ^ 1) & 1];
1432 }
1433
1434 #endif /* _IDE_H */
AMDTP streaming driver for the Linux FireWire stack (Juju)