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ide: make ide_pc_intr() static
[linux-2.6/verdex.git] / include / linux / ide.h
blob449a1094700ff1fb61126bc155c71e89900e9dcc
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 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
535 unsigned int cyl; /* "real" number of cyls */
536 unsigned int drive_data; /* used by set_pio_mode/selectproc */
537 unsigned int failures; /* current failure count */
538 unsigned int max_failures; /* maximum allowed failure count */
539 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
540
541 u64 capacity64; /* total number of sectors */
542
543 int lun; /* logical unit */
544 int crc_count; /* crc counter to reduce drive speed */
545 #ifdef CONFIG_BLK_DEV_IDEACPI
546 struct ide_acpi_drive_link *acpidata;
547 #endif
548 struct list_head list;
549 struct device gendev;
550 struct completion gendev_rel_comp; /* to deal with device release() */
551
552 /* current packet command */
553 struct ide_atapi_pc *pc;
554
555 /* callback for packet commands */
556 void (*pc_callback)(struct ide_drive_s *, int);
557
558 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
559 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
560 unsigned int, int);
561
562 unsigned long atapi_flags;
563
564 struct ide_atapi_pc request_sense_pc;
565 struct request request_sense_rq;
566 };
567
568 typedef struct ide_drive_s ide_drive_t;
569
570 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
571
572 struct ide_task_s;
573 struct ide_port_info;
574
575 struct ide_tp_ops {
576 void (*exec_command)(struct hwif_s *, u8);
577 u8 (*read_status)(struct hwif_s *);
578 u8 (*read_altstatus)(struct hwif_s *);
579 u8 (*read_sff_dma_status)(struct hwif_s *);
580
581 void (*set_irq)(struct hwif_s *, int);
582
583 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
584 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
585
586 void (*input_data)(ide_drive_t *, struct request *, void *,
587 unsigned int);
588 void (*output_data)(ide_drive_t *, struct request *, void *,
589 unsigned int);
590 };
591
592 extern const struct ide_tp_ops default_tp_ops;
593
594 /**
595 * struct ide_port_ops - IDE port operations
596 *
597 * @init_dev: host specific initialization of a device
598 * @set_pio_mode: routine to program host for PIO mode
599 * @set_dma_mode: routine to program host for DMA mode
600 * @selectproc: tweaks hardware to select drive
601 * @reset_poll: chipset polling based on hba specifics
602 * @pre_reset: chipset specific changes to default for device-hba resets
603 * @resetproc: routine to reset controller after a disk reset
604 * @maskproc: special host masking for drive selection
605 * @quirkproc: check host's drive quirk list
606 *
607 * @mdma_filter: filter MDMA modes
608 * @udma_filter: filter UDMA modes
609 *
610 * @cable_detect: detect cable type
611 */
612 struct ide_port_ops {
613 void (*init_dev)(ide_drive_t *);
614 void (*set_pio_mode)(ide_drive_t *, const u8);
615 void (*set_dma_mode)(ide_drive_t *, const u8);
616 void (*selectproc)(ide_drive_t *);
617 int (*reset_poll)(ide_drive_t *);
618 void (*pre_reset)(ide_drive_t *);
619 void (*resetproc)(ide_drive_t *);
620 void (*maskproc)(ide_drive_t *, int);
621 void (*quirkproc)(ide_drive_t *);
622
623 u8 (*mdma_filter)(ide_drive_t *);
624 u8 (*udma_filter)(ide_drive_t *);
625
626 u8 (*cable_detect)(struct hwif_s *);
627 };
628
629 struct ide_dma_ops {
630 void (*dma_host_set)(struct ide_drive_s *, int);
631 int (*dma_setup)(struct ide_drive_s *);
632 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
633 void (*dma_start)(struct ide_drive_s *);
634 int (*dma_end)(struct ide_drive_s *);
635 int (*dma_test_irq)(struct ide_drive_s *);
636 void (*dma_lost_irq)(struct ide_drive_s *);
637 void (*dma_timeout)(struct ide_drive_s *);
638 };
639
640 struct ide_host;
641
642 typedef struct hwif_s {
643 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
644 struct hwif_s *mate; /* other hwif from same PCI chip */
645 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
646 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
647
648 struct ide_host *host;
649
650 char name[6]; /* name of interface, eg. "ide0" */
651
652 struct ide_io_ports io_ports;
653
654 unsigned long sata_scr[SATA_NR_PORTS];
655
656 ide_drive_t drives[MAX_DRIVES]; /* drive info */
657
658 u8 major; /* our major number */
659 u8 index; /* 0 for ide0; 1 for ide1; ... */
660 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
661
662 u32 host_flags;
663
664 u8 pio_mask;
665
666 u8 ultra_mask;
667 u8 mwdma_mask;
668 u8 swdma_mask;
669
670 u8 cbl; /* cable type */
671
672 hwif_chipset_t chipset; /* sub-module for tuning.. */
673
674 struct device *dev;
675
676 ide_ack_intr_t *ack_intr;
677
678 void (*rw_disk)(ide_drive_t *, struct request *);
679
680 const struct ide_tp_ops *tp_ops;
681 const struct ide_port_ops *port_ops;
682 const struct ide_dma_ops *dma_ops;
683
684 void (*ide_dma_clear_irq)(ide_drive_t *drive);
685
686 /* dma physical region descriptor table (cpu view) */
687 unsigned int *dmatable_cpu;
688 /* dma physical region descriptor table (dma view) */
689 dma_addr_t dmatable_dma;
690 /* Scatter-gather list used to build the above */
691 struct scatterlist *sg_table;
692 int sg_max_nents; /* Maximum number of entries in it */
693 int sg_nents; /* Current number of entries in it */
694 int sg_dma_direction; /* dma transfer direction */
695
696 /* data phase of the active command (currently only valid for PIO/DMA) */
697 int data_phase;
698
699 unsigned int nsect;
700 unsigned int nleft;
701 struct scatterlist *cursg;
702 unsigned int cursg_ofs;
703
704 int rqsize; /* max sectors per request */
705 int irq; /* our irq number */
706
707 unsigned long dma_base; /* base addr for dma ports */
708
709 unsigned long config_data; /* for use by chipset-specific code */
710 unsigned long select_data; /* for use by chipset-specific code */
711
712 unsigned long extra_base; /* extra addr for dma ports */
713 unsigned extra_ports; /* number of extra dma ports */
714
715 unsigned present : 1; /* this interface exists */
716 unsigned serialized : 1; /* serialized all channel operation */
717 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
718 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
719
720 struct device gendev;
721 struct device *portdev;
722
723 struct completion gendev_rel_comp; /* To deal with device release() */
724
725 void *hwif_data; /* extra hwif data */
726
727 unsigned dma;
728
729 #ifdef CONFIG_BLK_DEV_IDEACPI
730 struct ide_acpi_hwif_link *acpidata;
731 #endif
732 } ____cacheline_internodealigned_in_smp ide_hwif_t;
733
734 struct ide_host {
735 ide_hwif_t *ports[MAX_HWIFS];
736 unsigned int n_ports;
737 struct device *dev[2];
738 unsigned int (*init_chipset)(struct pci_dev *);
739 unsigned long host_flags;
740 void *host_priv;
741 };
742
743 /*
744 * internal ide interrupt handler type
745 */
746 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
747 typedef int (ide_expiry_t)(ide_drive_t *);
748
749 /* used by ide-cd, ide-floppy, etc. */
750 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
751
752 typedef struct hwgroup_s {
753 /* irq handler, if active */
754 ide_startstop_t (*handler)(ide_drive_t *);
755
756 /* BOOL: protects all fields below */
757 volatile int busy;
758 /* BOOL: wake us up on timer expiry */
759 unsigned int sleeping : 1;
760 /* BOOL: polling active & poll_timeout field valid */
761 unsigned int polling : 1;
762
763 /* current drive */
764 ide_drive_t *drive;
765 /* ptr to current hwif in linked-list */
766 ide_hwif_t *hwif;
767
768 /* current request */
769 struct request *rq;
770
771 /* failsafe timer */
772 struct timer_list timer;
773 /* timeout value during long polls */
774 unsigned long poll_timeout;
775 /* queried upon timeouts */
776 int (*expiry)(ide_drive_t *);
777
778 int req_gen;
779 int req_gen_timer;
780 } ide_hwgroup_t;
781
782 typedef struct ide_driver_s ide_driver_t;
783
784 extern struct mutex ide_setting_mtx;
785
786 /*
787 * configurable drive settings
788 */
789
790 #define DS_SYNC (1 << 0)
791
792 struct ide_devset {
793 int (*get)(ide_drive_t *);
794 int (*set)(ide_drive_t *, int);
795 unsigned int flags;
796 };
797
798 #define __DEVSET(_flags, _get, _set) { \
799 .flags = _flags, \
800 .get = _get, \
801 .set = _set, \
802 }
803
804 #define ide_devset_get(name, field) \
805 static int get_##name(ide_drive_t *drive) \
806 { \
807 return drive->field; \
808 }
809
810 #define ide_devset_set(name, field) \
811 static int set_##name(ide_drive_t *drive, int arg) \
812 { \
813 drive->field = arg; \
814 return 0; \
815 }
816
817 #define __IDE_DEVSET(_name, _flags, _get, _set) \
818 const struct ide_devset ide_devset_##_name = \
819 __DEVSET(_flags, _get, _set)
820
821 #define IDE_DEVSET(_name, _flags, _get, _set) \
822 static __IDE_DEVSET(_name, _flags, _get, _set)
823
824 #define ide_devset_rw(_name, _func) \
825 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
826
827 #define ide_devset_w(_name, _func) \
828 IDE_DEVSET(_name, 0, NULL, set_##_func)
829
830 #define ide_devset_rw_sync(_name, _func) \
831 IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
832
833 #define ide_decl_devset(_name) \
834 extern const struct ide_devset ide_devset_##_name
835
836 ide_decl_devset(io_32bit);
837 ide_decl_devset(keepsettings);
838 ide_decl_devset(pio_mode);
839 ide_decl_devset(unmaskirq);
840 ide_decl_devset(using_dma);
841
842 #ifdef CONFIG_IDE_PROC_FS
843 /*
844 * /proc/ide interface
845 */
846
847 #define ide_devset_rw_field(_name, _field) \
848 ide_devset_get(_name, _field); \
849 ide_devset_set(_name, _field); \
850 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
851
852 struct ide_proc_devset {
853 const char *name;
854 const struct ide_devset *setting;
855 int min, max;
856 int (*mulf)(ide_drive_t *);
857 int (*divf)(ide_drive_t *);
858 };
859
860 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
861 .name = __stringify(_name), \
862 .setting = &ide_devset_##_name, \
863 .min = _min, \
864 .max = _max, \
865 .mulf = _mulf, \
866 .divf = _divf, \
867 }
868
869 #define IDE_PROC_DEVSET(_name, _min, _max) \
870 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
871
872 typedef struct {
873 const char *name;
874 mode_t mode;
875 read_proc_t *read_proc;
876 write_proc_t *write_proc;
877 } ide_proc_entry_t;
878
879 void proc_ide_create(void);
880 void proc_ide_destroy(void);
881 void ide_proc_register_port(ide_hwif_t *);
882 void ide_proc_port_register_devices(ide_hwif_t *);
883 void ide_proc_unregister_device(ide_drive_t *);
884 void ide_proc_unregister_port(ide_hwif_t *);
885 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
886 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
887
888 read_proc_t proc_ide_read_capacity;
889 read_proc_t proc_ide_read_geometry;
890
891 /*
892 * Standard exit stuff:
893 */
894 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
895 { \
896 len -= off; \
897 if (len < count) { \
898 *eof = 1; \
899 if (len <= 0) \
900 return 0; \
901 } else \
902 len = count; \
903 *start = page + off; \
904 return len; \
905 }
906 #else
907 static inline void proc_ide_create(void) { ; }
908 static inline void proc_ide_destroy(void) { ; }
909 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
910 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
911 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
912 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
913 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
914 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
915 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
916 #endif
917
918 /*
919 * Power Management step value (rq->pm->pm_step).
920 *
921 * The step value starts at 0 (ide_pm_state_start_suspend) for a
922 * suspend operation or 1000 (ide_pm_state_start_resume) for a
923 * resume operation.
924 *
925 * For each step, the core calls the subdriver start_power_step() first.
926 * This can return:
927 * - ide_stopped : In this case, the core calls us back again unless
928 * step have been set to ide_power_state_completed.
929 * - ide_started : In this case, the channel is left busy until an
930 * async event (interrupt) occurs.
931 * Typically, start_power_step() will issue a taskfile request with
932 * do_rw_taskfile().
933 *
934 * Upon reception of the interrupt, the core will call complete_power_step()
935 * with the error code if any. This routine should update the step value
936 * and return. It should not start a new request. The core will call
937 * start_power_step for the new step value, unless step have been set to
938 * ide_power_state_completed.
939 *
940 * Subdrivers are expected to define their own additional power
941 * steps from 1..999 for suspend and from 1001..1999 for resume,
942 * other values are reserved for future use.
943 */
944
945 enum {
946 ide_pm_state_completed = -1,
947 ide_pm_state_start_suspend = 0,
948 ide_pm_state_start_resume = 1000,
949 };
950
951 /*
952 * Subdrivers support.
953 *
954 * The gendriver.owner field should be set to the module owner of this driver.
955 * The gendriver.name field should be set to the name of this driver
956 */
957 struct ide_driver_s {
958 const char *version;
959 u8 media;
960 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
961 int (*end_request)(ide_drive_t *, int, int);
962 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
963 struct device_driver gen_driver;
964 int (*probe)(ide_drive_t *);
965 void (*remove)(ide_drive_t *);
966 void (*resume)(ide_drive_t *);
967 void (*shutdown)(ide_drive_t *);
968 #ifdef CONFIG_IDE_PROC_FS
969 ide_proc_entry_t *proc;
970 const struct ide_proc_devset *settings;
971 #endif
972 };
973
974 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
975
976 int ide_device_get(ide_drive_t *);
977 void ide_device_put(ide_drive_t *);
978
979 struct ide_ioctl_devset {
980 unsigned int get_ioctl;
981 unsigned int set_ioctl;
982 const struct ide_devset *setting;
983 };
984
985 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
986 unsigned long, const struct ide_ioctl_devset *);
987
988 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
989 unsigned, unsigned long);
990
991 extern int ide_vlb_clk;
992 extern int ide_pci_clk;
993
994 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
995 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
996 int uptodate, int nr_sectors);
997
998 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
999
1000 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1001 ide_expiry_t *);
1002
1003 void ide_execute_pkt_cmd(ide_drive_t *);
1004
1005 void ide_pad_transfer(ide_drive_t *, int, int);
1006
1007 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1008
1009 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1010
1011 void ide_fix_driveid(u16 *);
1012
1013 extern void ide_fixstring(u8 *, const int, const int);
1014
1015 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1016
1017 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1018
1019 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1020
1021 extern int ide_devset_execute(ide_drive_t *drive,
1022 const struct ide_devset *setting, int arg);
1023
1024 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1025
1026 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1027
1028 enum {
1029 IDE_TFLAG_LBA48 = (1 << 0),
1030 IDE_TFLAG_FLAGGED = (1 << 2),
1031 IDE_TFLAG_OUT_DATA = (1 << 3),
1032 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
1033 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
1034 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
1035 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
1036 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
1037 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
1038 IDE_TFLAG_OUT_HOB_NSECT |
1039 IDE_TFLAG_OUT_HOB_LBAL |
1040 IDE_TFLAG_OUT_HOB_LBAM |
1041 IDE_TFLAG_OUT_HOB_LBAH,
1042 IDE_TFLAG_OUT_FEATURE = (1 << 9),
1043 IDE_TFLAG_OUT_NSECT = (1 << 10),
1044 IDE_TFLAG_OUT_LBAL = (1 << 11),
1045 IDE_TFLAG_OUT_LBAM = (1 << 12),
1046 IDE_TFLAG_OUT_LBAH = (1 << 13),
1047 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
1048 IDE_TFLAG_OUT_NSECT |
1049 IDE_TFLAG_OUT_LBAL |
1050 IDE_TFLAG_OUT_LBAM |
1051 IDE_TFLAG_OUT_LBAH,
1052 IDE_TFLAG_OUT_DEVICE = (1 << 14),
1053 IDE_TFLAG_WRITE = (1 << 15),
1054 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
1055 IDE_TFLAG_IN_DATA = (1 << 17),
1056 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
1057 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
1058 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1059 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1060 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1061 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1062 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1063 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1064 IDE_TFLAG_IN_HOB_LBAM |
1065 IDE_TFLAG_IN_HOB_LBAH,
1066 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1067 IDE_TFLAG_IN_HOB_NSECT |
1068 IDE_TFLAG_IN_HOB_LBA,
1069 IDE_TFLAG_IN_FEATURE = (1 << 1),
1070 IDE_TFLAG_IN_NSECT = (1 << 25),
1071 IDE_TFLAG_IN_LBAL = (1 << 26),
1072 IDE_TFLAG_IN_LBAM = (1 << 27),
1073 IDE_TFLAG_IN_LBAH = (1 << 28),
1074 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1075 IDE_TFLAG_IN_LBAM |
1076 IDE_TFLAG_IN_LBAH,
1077 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1078 IDE_TFLAG_IN_LBA,
1079 IDE_TFLAG_IN_DEVICE = (1 << 29),
1080 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1081 IDE_TFLAG_IN_HOB,
1082 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1083 IDE_TFLAG_IN_TF,
1084 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1085 IDE_TFLAG_IN_DEVICE,
1086 /* force 16-bit I/O operations */
1087 IDE_TFLAG_IO_16BIT = (1 << 30),
1088 /* ide_task_t was allocated using kmalloc() */
1089 IDE_TFLAG_DYN = (1 << 31),
1090 };
1091
1092 struct ide_taskfile {
1093 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1094
1095 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1096 u8 hob_nsect;
1097 u8 hob_lbal;
1098 u8 hob_lbam;
1099 u8 hob_lbah;
1100
1101 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1102
1103 union { /*  7: */
1104 u8 error; /* read: error */
1105 u8 feature; /* write: feature */
1106 };
1107
1108 u8 nsect; /* 8: number of sectors */
1109 u8 lbal; /* 9: LBA low */
1110 u8 lbam; /* 10: LBA mid */
1111 u8 lbah; /* 11: LBA high */
1112
1113 u8 device; /* 12: device select */
1114
1115 union { /* 13: */
1116 u8 status; /*  read: status  */
1117 u8 command; /* write: command */
1118 };
1119 };
1120
1121 typedef struct ide_task_s {
1122 union {
1123 struct ide_taskfile tf;
1124 u8 tf_array[14];
1125 };
1126 u32 tf_flags;
1127 int data_phase;
1128 struct request *rq; /* copy of request */
1129 void *special; /* valid_t generally */
1130 } ide_task_t;
1131
1132 void ide_tf_dump(const char *, struct ide_taskfile *);
1133
1134 void ide_exec_command(ide_hwif_t *, u8);
1135 u8 ide_read_status(ide_hwif_t *);
1136 u8 ide_read_altstatus(ide_hwif_t *);
1137 u8 ide_read_sff_dma_status(ide_hwif_t *);
1138
1139 void ide_set_irq(ide_hwif_t *, int);
1140
1141 void ide_tf_load(ide_drive_t *, ide_task_t *);
1142 void ide_tf_read(ide_drive_t *, ide_task_t *);
1143
1144 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1145 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1146
1147 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1148
1149 extern void SELECT_DRIVE(ide_drive_t *);
1150 void SELECT_MASK(ide_drive_t *, int);
1151
1152 u8 ide_read_error(ide_drive_t *);
1153 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1154
1155 extern int drive_is_ready(ide_drive_t *);
1156
1157 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1158
1159 int ide_check_atapi_device(ide_drive_t *, const char *);
1160
1161 void ide_init_pc(struct ide_atapi_pc *);
1162
1163 /*
1164 * Special requests for ide-tape block device strategy routine.
1165 *
1166 * In order to service a character device command, we add special requests to
1167 * the tail of our block device request queue and wait for their completion.
1168 */
1169 enum {
1170 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1171 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1172 REQ_IDETAPE_READ = (1 << 2),
1173 REQ_IDETAPE_WRITE = (1 << 3),
1174 };
1175
1176 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1177
1178 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1179 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1180 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1181 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1182 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1183
1184 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1185 {
1186 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1187 }
1188
1189 int ide_scsi_expiry(ide_drive_t *);
1190
1191 ide_startstop_t ide_transfer_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
1192 ide_startstop_t ide_issue_pc(ide_drive_t *,
1193 ide_handler_t *, unsigned int, ide_expiry_t *);
1194
1195 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1196
1197 void task_end_request(ide_drive_t *, struct request *, u8);
1198
1199 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1200 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1201
1202 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1203
1204 extern int ide_driveid_update(ide_drive_t *);
1205 extern int ide_config_drive_speed(ide_drive_t *, u8);
1206 extern u8 eighty_ninty_three (ide_drive_t *);
1207 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1208
1209 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1210
1211 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1212
1213 extern void ide_timer_expiry(unsigned long);
1214 extern irqreturn_t ide_intr(int irq, void *dev_id);
1215 extern void do_ide_request(struct request_queue *);
1216
1217 void ide_init_disk(struct gendisk *, ide_drive_t *);
1218
1219 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1220 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1221 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1222 #else
1223 #define ide_pci_register_driver(d) pci_register_driver(d)
1224 #endif
1225
1226 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1227 hw_regs_t *, hw_regs_t **);
1228 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1229
1230 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1231 int ide_pci_set_master(struct pci_dev *, const char *);
1232 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1233 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1234 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1235 #else
1236 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1237 const struct ide_port_info *d)
1238 {
1239 return -EINVAL;
1240 }
1241 #endif
1242
1243 typedef struct ide_pci_enablebit_s {
1244 u8 reg; /* byte pci reg holding the enable-bit */
1245 u8 mask; /* mask to isolate the enable-bit */
1246 u8 val; /* value of masked reg when "enabled" */
1247 } ide_pci_enablebit_t;
1248
1249 enum {
1250 /* Uses ISA control ports not PCI ones. */
1251 IDE_HFLAG_ISA_PORTS = (1 << 0),
1252 /* single port device */
1253 IDE_HFLAG_SINGLE = (1 << 1),
1254 /* don't use legacy PIO blacklist */
1255 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1256 /* set for the second port of QD65xx */
1257 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1258 /* use PIO8/9 for prefetch off/on */
1259 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1260 /* use PIO6/7 for fast-devsel off/on */
1261 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1262 /* use 100-102 and 200-202 PIO values to set DMA modes */
1263 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1264 /*
1265 * keep DMA setting when programming PIO mode, may be used only
1266 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1267 */
1268 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1269 /* program host for the transfer mode after programming device */
1270 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1271 /* don't program host/device for the transfer mode ("smart" hosts) */
1272 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1273 /* trust BIOS for programming chipset/device for DMA */
1274 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1275 /* host is CS5510/CS5520 */
1276 IDE_HFLAG_CS5520 = (1 << 11),
1277 /* ATAPI DMA is unsupported */
1278 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1279 /* set if host is a "non-bootable" controller */
1280 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1281 /* host doesn't support DMA */
1282 IDE_HFLAG_NO_DMA = (1 << 14),
1283 /* check if host is PCI IDE device before allowing DMA */
1284 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1285 /* host uses MMIO */
1286 IDE_HFLAG_MMIO = (1 << 16),
1287 /* no LBA48 */
1288 IDE_HFLAG_NO_LBA48 = (1 << 17),
1289 /* no LBA48 DMA */
1290 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1291 /* data FIFO is cleared by an error */
1292 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1293 /* serialize ports */
1294 IDE_HFLAG_SERIALIZE = (1 << 20),
1295 /* use legacy IRQs */
1296 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1297 /* force use of legacy IRQs */
1298 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1299 /* limit LBA48 requests to 256 sectors */
1300 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1301 /* use 32-bit I/O ops */
1302 IDE_HFLAG_IO_32BIT = (1 << 24),
1303 /* unmask IRQs */
1304 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1305 /* serialize ports if DMA is possible (for sl82c105) */
1306 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1307 /* force host out of "simplex" mode */
1308 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1309 /* DSC overlap is unsupported */
1310 IDE_HFLAG_NO_DSC = (1 << 29),
1311 /* never use 32-bit I/O ops */
1312 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1313 /* never unmask IRQs */
1314 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1315 };
1316
1317 #ifdef CONFIG_BLK_DEV_OFFBOARD
1318 # define IDE_HFLAG_OFF_BOARD 0
1319 #else
1320 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1321 #endif
1322
1323 struct ide_port_info {
1324 char *name;
1325 unsigned int (*init_chipset)(struct pci_dev *);
1326 void (*init_iops)(ide_hwif_t *);
1327 void (*init_hwif)(ide_hwif_t *);
1328 int (*init_dma)(ide_hwif_t *,
1329 const struct ide_port_info *);
1330
1331 const struct ide_tp_ops *tp_ops;
1332 const struct ide_port_ops *port_ops;
1333 const struct ide_dma_ops *dma_ops;
1334
1335 ide_pci_enablebit_t enablebits[2];
1336 hwif_chipset_t chipset;
1337 u32 host_flags;
1338 u8 pio_mask;
1339 u8 swdma_mask;
1340 u8 mwdma_mask;
1341 u8 udma_mask;
1342 };
1343
1344 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1345 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1346 const struct ide_port_info *, void *);
1347 void ide_pci_remove(struct pci_dev *);
1348
1349 #ifdef CONFIG_PM
1350 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1351 int ide_pci_resume(struct pci_dev *);
1352 #else
1353 #define ide_pci_suspend NULL
1354 #define ide_pci_resume NULL
1355 #endif
1356
1357 void ide_map_sg(ide_drive_t *, struct request *);
1358 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1359
1360 #define BAD_DMA_DRIVE 0
1361 #define GOOD_DMA_DRIVE 1
1362
1363 struct drive_list_entry {
1364 const char *id_model;
1365 const char *id_firmware;
1366 };
1367
1368 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1369
1370 #ifdef CONFIG_BLK_DEV_IDEDMA
1371 int __ide_dma_bad_drive(ide_drive_t *);
1372 int ide_id_dma_bug(ide_drive_t *);
1373
1374 u8 ide_find_dma_mode(ide_drive_t *, u8);
1375
1376 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1377 {
1378 return ide_find_dma_mode(drive, XFER_UDMA_6);
1379 }
1380
1381 void ide_dma_off_quietly(ide_drive_t *);
1382 void ide_dma_off(ide_drive_t *);
1383 void ide_dma_on(ide_drive_t *);
1384 int ide_set_dma(ide_drive_t *);
1385 void ide_check_dma_crc(ide_drive_t *);
1386 ide_startstop_t ide_dma_intr(ide_drive_t *);
1387
1388 int ide_build_sglist(ide_drive_t *, struct request *);
1389 void ide_destroy_dmatable(ide_drive_t *);
1390
1391 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1392 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1393 int ide_allocate_dma_engine(ide_hwif_t *);
1394 void ide_release_dma_engine(ide_hwif_t *);
1395
1396 void ide_dma_host_set(ide_drive_t *, int);
1397 extern int ide_dma_setup(ide_drive_t *);
1398 void ide_dma_exec_cmd(ide_drive_t *, u8);
1399 extern void ide_dma_start(ide_drive_t *);
1400 extern int __ide_dma_end(ide_drive_t *);
1401 int ide_dma_test_irq(ide_drive_t *);
1402 extern void ide_dma_lost_irq(ide_drive_t *);
1403 extern void ide_dma_timeout(ide_drive_t *);
1404 extern const struct ide_dma_ops sff_dma_ops;
1405 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1406
1407 #else
1408 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1409 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1410 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1411 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1412 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1413 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1414 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1415 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1416 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1417 #endif /* CONFIG_BLK_DEV_IDEDMA */
1418
1419 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1420 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1421 #endif
1422
1423 #ifdef CONFIG_BLK_DEV_IDEACPI
1424 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1425 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1426 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1427 extern void ide_acpi_init(ide_hwif_t *hwif);
1428 void ide_acpi_port_init_devices(ide_hwif_t *);
1429 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1430 #else
1431 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1432 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1433 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1434 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1435 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1436 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1437 #endif
1438
1439 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1440 void ide_unregister(ide_hwif_t *);
1441
1442 void ide_register_region(struct gendisk *);
1443 void ide_unregister_region(struct gendisk *);
1444
1445 void ide_undecoded_slave(ide_drive_t *);
1446
1447 void ide_port_apply_params(ide_hwif_t *);
1448
1449 struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1450 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1451 void ide_host_free(struct ide_host *);
1452 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1453 hw_regs_t **);
1454 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1455 struct ide_host **);
1456 void ide_host_remove(struct ide_host *);
1457 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1458 void ide_port_unregister_devices(ide_hwif_t *);
1459 void ide_port_scan(ide_hwif_t *);
1460
1461 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1462 {
1463 return hwif->hwif_data;
1464 }
1465
1466 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1467 {
1468 hwif->hwif_data = data;
1469 }
1470
1471 const char *ide_xfer_verbose(u8 mode);
1472 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1473 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1474
1475 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1476 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1477
1478 struct ide_timing {
1479 u8 mode;
1480 u8 setup; /* t1 */
1481 u16 act8b; /* t2 for 8-bit io */
1482 u16 rec8b; /* t2i for 8-bit io */
1483 u16 cyc8b; /* t0 for 8-bit io */
1484 u16 active; /* t2 or tD */
1485 u16 recover; /* t2i or tK */
1486 u16 cycle; /* t0 */
1487 u16 udma; /* t2CYCTYP/2 */
1488 };
1489
1490 enum {
1491 IDE_TIMING_SETUP = (1 << 0),
1492 IDE_TIMING_ACT8B = (1 << 1),
1493 IDE_TIMING_REC8B = (1 << 2),
1494 IDE_TIMING_CYC8B = (1 << 3),
1495 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1496 IDE_TIMING_CYC8B,
1497 IDE_TIMING_ACTIVE = (1 << 4),
1498 IDE_TIMING_RECOVER = (1 << 5),
1499 IDE_TIMING_CYCLE = (1 << 6),
1500 IDE_TIMING_UDMA = (1 << 7),
1501 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1502 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1503 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1504 };
1505
1506 struct ide_timing *ide_timing_find_mode(u8);
1507 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1508 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1509 struct ide_timing *, unsigned int);
1510 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1511
1512 int ide_scan_pio_blacklist(char *);
1513
1514 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1515
1516 int ide_set_pio_mode(ide_drive_t *, u8);
1517 int ide_set_dma_mode(ide_drive_t *, u8);
1518
1519 void ide_set_pio(ide_drive_t *, u8);
1520
1521 static inline void ide_set_max_pio(ide_drive_t *drive)
1522 {
1523 ide_set_pio(drive, 255);
1524 }
1525
1526 extern spinlock_t ide_lock;
1527 extern struct mutex ide_cfg_mtx;
1528 /*
1529 * Structure locking:
1530 *
1531 * ide_cfg_mtx and ide_lock together protect changes to
1532 * ide_hwif_t->{next,hwgroup}
1533 * ide_drive_t->next
1534 *
1535 * ide_hwgroup_t->busy: ide_lock
1536 * ide_hwgroup_t->hwif: ide_lock
1537 * ide_hwif_t->mate: constant, no locking
1538 * ide_drive_t->hwif: constant, no locking
1539 */
1540
1541 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1542
1543 extern struct bus_type ide_bus_type;
1544 extern struct class *ide_port_class;
1545
1546 static inline void ide_dump_identify(u8 *id)
1547 {
1548 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1549 }
1550
1551 static inline int hwif_to_node(ide_hwif_t *hwif)
1552 {
1553 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1554 }
1555
1556 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1557 {
1558 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1559
1560 return peer->present ? peer : NULL;
1561 }
1562 #endif /* _IDE_H */
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