Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/ioport.h> | |
3ceca727 | 11 | #include <linux/ata.h> |
1da177e4 LT |
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> | |
f36d4024 | 19 | #include <linux/completion.h> |
feb22b7f | 20 | #include <linux/pm.h> |
e3a59b4d HR |
21 | #ifdef CONFIG_BLK_DEV_IDEACPI |
22 | #include <acpi/acpi.h> | |
23 | #endif | |
1da177e4 LT |
24 | #include <asm/byteorder.h> |
25 | #include <asm/system.h> | |
26 | #include <asm/io.h> | |
f9383c42 | 27 | #include <asm/mutex.h> |
1da177e4 | 28 | |
729d4de9 | 29 | #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) |
4ee06b7e BZ |
30 | # define SUPPORT_VLB_SYNC 0 |
31 | #else | |
32 | # define SUPPORT_VLB_SYNC 1 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
4c3032d8 BZ |
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 | }; | |
1da177e4 LT |
89 | |
90 | #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) | |
1da177e4 | 91 | |
3a7d2484 BZ |
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) | |
1da177e4 LT |
98 | |
99 | #define SATA_NR_PORTS (3) /* 16 possible ?? */ | |
100 | ||
101 | #define SATA_STATUS_OFFSET (0) | |
1da177e4 | 102 | #define SATA_ERROR_OFFSET (1) |
1da177e4 | 103 | #define SATA_CONTROL_OFFSET (2) |
1da177e4 | 104 | |
1da177e4 LT |
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 | |
151a6701 | 130 | |
1da177e4 LT |
131 | #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t))) |
132 | ||
133 | /* | |
134 | * Timeouts for various operations: | |
135 | */ | |
d6e2955a BZ |
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 | }; | |
1da177e4 | 158 | |
79e36a9f EO |
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 | |
92f1f8fd | 164 | #define REQ_DEVSET_EXEC 0x21 |
79e36a9f | 165 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
172 | /* |
173 | * hwif_chipset_t is used to keep track of the specific hardware | |
174 | * chipset used by each IDE interface, if known. | |
175 | */ | |
528a572d | 176 | enum { ide_unknown, ide_generic, ide_pci, |
1da177e4 LT |
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, | |
b7691646 | 181 | ide_pmac, ide_acorn, |
9a0e77f2 | 182 | ide_au1xxx, ide_palm3710 |
528a572d BZ |
183 | }; |
184 | ||
185 | typedef u8 hwif_chipset_t; | |
1da177e4 LT |
186 | |
187 | /* | |
188 | * Structure to hold all information about the location of this port | |
189 | */ | |
190 | typedef struct hw_regs_s { | |
4c3032d8 BZ |
191 | union { |
192 | struct ide_io_ports io_ports; | |
193 | unsigned long io_ports_array[IDE_NR_PORTS]; | |
194 | }; | |
195 | ||
1da177e4 | 196 | int irq; /* our irq number */ |
1da177e4 LT |
197 | ide_ack_intr_t *ack_intr; /* acknowledge interrupt */ |
198 | hwif_chipset_t chipset; | |
c56c5648 | 199 | struct device *dev, *parent; |
d6276b5f | 200 | unsigned long config; |
1da177e4 LT |
201 | } hw_regs_t; |
202 | ||
cbb010c1 | 203 | void ide_init_port_data(struct hwif_s *, unsigned int); |
57c802e8 | 204 | void ide_init_port_hw(struct hwif_s *, hw_regs_t *); |
baa8f3e9 | 205 | |
1da177e4 LT |
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 | ||
4c3032d8 BZ |
212 | for (i = 0; i <= 7; i++) |
213 | hw->io_ports_array[i] = io_addr++; | |
1da177e4 | 214 | |
4c3032d8 | 215 | hw->io_ports.ctl_addr = ctl_addr; |
1da177e4 LT |
216 | } |
217 | ||
a861beb1 BZ |
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 | ||
2a8f7450 BZ |
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) | |
1da177e4 | 236 | #include <asm/ide.h> |
2a8f7450 BZ |
237 | #else |
238 | #include <asm-generic/ide_iops.h> | |
239 | #endif | |
1da177e4 | 240 | |
c5bfc375 | 241 | #define MAX_HWIFS 10 |
83ae20c8 | 242 | |
1da177e4 LT |
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 { | |
1da177e4 LT |
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; | |
1da177e4 LT |
284 | } b; |
285 | } special_t; | |
286 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
67c56364 BZ |
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 | ||
8185d5aa | 390 | struct ide_devset; |
1da177e4 | 391 | struct ide_driver_s; |
1da177e4 | 392 | |
e3a59b4d HR |
393 | #ifdef CONFIG_BLK_DEV_IDEACPI |
394 | struct ide_acpi_drive_link; | |
395 | struct ide_acpi_hwif_link; | |
396 | #endif | |
397 | ||
3b8ac539 BP |
398 | /* ATAPI device flags */ |
399 | enum { | |
400 | IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), | |
401 | IDE_AFLAG_MEDIA_CHANGED = (1 << 1), | |
3b8ac539 BP |
402 | /* Drive cannot lock the door. */ |
403 | IDE_AFLAG_NO_DOORLOCK = (1 << 2), | |
0578042d BZ |
404 | |
405 | /* ide-cd */ | |
3b8ac539 BP |
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), | |
49cac39e BZ |
441 | /* Write protect */ |
442 | IDE_AFLAG_WP = (1 << 21), | |
443 | /* Supports format progress report */ | |
444 | IDE_AFLAG_SRFP = (1 << 22), | |
3b8ac539 BP |
445 | |
446 | /* ide-tape */ | |
49cac39e | 447 | IDE_AFLAG_IGNORE_DSC = (1 << 23), |
3b8ac539 | 448 | /* 0 When the tape position is unknown */ |
49cac39e | 449 | IDE_AFLAG_ADDRESS_VALID = (1 << 24), |
3b8ac539 | 450 | /* Device already opened */ |
49cac39e | 451 | IDE_AFLAG_BUSY = (1 << 25), |
3b8ac539 | 452 | /* Attempt to auto-detect the current user block size */ |
49cac39e | 453 | IDE_AFLAG_DETECT_BS = (1 << 26), |
3b8ac539 | 454 | /* Currently on a filemark */ |
49cac39e | 455 | IDE_AFLAG_FILEMARK = (1 << 27), |
3b8ac539 | 456 | /* 0 = no tape is loaded, so we don't rewind after ejecting */ |
49cac39e | 457 | IDE_AFLAG_MEDIUM_PRESENT = (1 << 28), |
f20f2586 | 458 | |
49cac39e | 459 | IDE_AFLAG_NO_AUTOCLOSE = (1 << 29), |
3b8ac539 BP |
460 | }; |
461 | ||
d7c26ebb | 462 | struct ide_drive_s { |
1da177e4 LT |
463 | char name[4]; /* drive name, such as "hda" */ |
464 | char driver_req[10]; /* requests specific driver */ | |
465 | ||
165125e1 | 466 | struct request_queue *queue; /* request queue */ |
1da177e4 LT |
467 | |
468 | struct request *rq; /* current request */ | |
469 | struct ide_drive_s *next; /* circular list of hwgroup drives */ | |
1da177e4 | 470 | void *driver_data; /* extra driver data */ |
48fb2688 | 471 | u16 *id; /* identification info */ |
7662d046 | 472 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 473 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
92f1f8fd | 474 | const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */ |
7662d046 | 475 | #endif |
1da177e4 LT |
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 | ||
1da177e4 LT |
486 | u8 retry_pio; /* retrying dma capable host in pio */ |
487 | u8 state; /* retry state */ | |
488 | u8 waiting_for_dma; /* dma currently in progress */ | |
1da177e4 | 489 | |
8185d5aa BZ |
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 */ | |
1da177e4 LT |
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 */ | |
1da177e4 LT |
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 */ | |
1da177e4 | 505 | unsigned doorlocking : 1; /* for removable only: door lock/unlock works */ |
c223701c | 506 | unsigned nodma : 1; /* disallow DMA */ |
1da177e4 | 507 | unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ |
1da177e4 LT |
508 | unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */ |
509 | unsigned sleeping : 1; /* 1=sleeping & sleep field valid */ | |
510 | unsigned post_reset : 1; | |
7f8f48af | 511 | unsigned udma33_warned : 1; |
35c13753 | 512 | unsigned addressing : 1; /* 0=28-bit, 1=48-bit */ |
8185d5aa BZ |
513 | unsigned wcache : 1; /* status of write cache */ |
514 | unsigned nowerr : 1; /* used for ignoring ATA_DF */ | |
1da177e4 LT |
515 | |
516 | u8 quirk_list; /* considered quirky, set for a specific host */ | |
517 | u8 init_speed; /* transfer rate set at boot */ | |
1da177e4 | 518 | u8 current_speed; /* current transfer rate set */ |
513daadd | 519 | u8 desired_speed; /* desired transfer rate set */ |
1da177e4 | 520 | u8 dn; /* now wide spread use */ |
1da177e4 LT |
521 | u8 acoustic; /* acoustic management */ |
522 | u8 media; /* disk, cdrom, tape, floppy, ... */ | |
1da177e4 LT |
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 */ | |
3a7d2484 | 528 | u8 bad_wstat; /* used for ignoring ATA_DF */ |
1da177e4 LT |
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 | ||
baf08f0b BZ |
534 | /* delay this long before sending packet command */ |
535 | u8 pc_delay; | |
536 | ||
1da177e4 LT |
537 | unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ |
538 | unsigned int cyl; /* "real" number of cyls */ | |
26bcb879 | 539 | unsigned int drive_data; /* used by set_pio_mode/selectproc */ |
1da177e4 LT |
540 | unsigned int failures; /* current failure count */ |
541 | unsigned int max_failures; /* maximum allowed failure count */ | |
dbe217af | 542 | u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */ |
1da177e4 LT |
543 | |
544 | u64 capacity64; /* total number of sectors */ | |
545 | ||
546 | int lun; /* logical unit */ | |
547 | int crc_count; /* crc counter to reduce drive speed */ | |
b22b2ca4 BP |
548 | |
549 | unsigned long debug_mask; /* debugging levels switch */ | |
550 | ||
e3a59b4d HR |
551 | #ifdef CONFIG_BLK_DEV_IDEACPI |
552 | struct ide_acpi_drive_link *acpidata; | |
553 | #endif | |
1da177e4 LT |
554 | struct list_head list; |
555 | struct device gendev; | |
f36d4024 | 556 | struct completion gendev_rel_comp; /* to deal with device release() */ |
d7c26ebb | 557 | |
2b9efba4 BZ |
558 | /* current packet command */ |
559 | struct ide_atapi_pc *pc; | |
560 | ||
d7c26ebb | 561 | /* callback for packet commands */ |
b14c7212 | 562 | void (*pc_callback)(struct ide_drive_s *, int); |
3b8ac539 | 563 | |
85e39035 BZ |
564 | void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *); |
565 | int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *, | |
566 | unsigned int, int); | |
567 | ||
3b8ac539 | 568 | unsigned long atapi_flags; |
67c56364 BZ |
569 | |
570 | struct ide_atapi_pc request_sense_pc; | |
571 | struct request request_sense_rq; | |
d7c26ebb BP |
572 | }; |
573 | ||
574 | typedef struct ide_drive_s ide_drive_t; | |
1da177e4 | 575 | |
5aeddf90 BP |
576 | #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev) |
577 | ||
578 | #define to_ide_drv(obj, cont_type) \ | |
579 | container_of(obj, struct cont_type, kref) | |
580 | ||
581 | #define ide_drv_g(disk, cont_type) \ | |
582 | container_of((disk)->private_data, struct cont_type, driver) | |
8604affd | 583 | |
374e042c | 584 | struct ide_task_s; |
039788e1 | 585 | struct ide_port_info; |
1da177e4 | 586 | |
374e042c BZ |
587 | struct ide_tp_ops { |
588 | void (*exec_command)(struct hwif_s *, u8); | |
589 | u8 (*read_status)(struct hwif_s *); | |
590 | u8 (*read_altstatus)(struct hwif_s *); | |
591 | u8 (*read_sff_dma_status)(struct hwif_s *); | |
592 | ||
593 | void (*set_irq)(struct hwif_s *, int); | |
594 | ||
595 | void (*tf_load)(ide_drive_t *, struct ide_task_s *); | |
596 | void (*tf_read)(ide_drive_t *, struct ide_task_s *); | |
597 | ||
598 | void (*input_data)(ide_drive_t *, struct request *, void *, | |
599 | unsigned int); | |
600 | void (*output_data)(ide_drive_t *, struct request *, void *, | |
601 | unsigned int); | |
602 | }; | |
603 | ||
604 | extern const struct ide_tp_ops default_tp_ops; | |
605 | ||
39b986a6 BZ |
606 | /** |
607 | * struct ide_port_ops - IDE port operations | |
608 | * | |
609 | * @init_dev: host specific initialization of a device | |
610 | * @set_pio_mode: routine to program host for PIO mode | |
611 | * @set_dma_mode: routine to program host for DMA mode | |
612 | * @selectproc: tweaks hardware to select drive | |
613 | * @reset_poll: chipset polling based on hba specifics | |
614 | * @pre_reset: chipset specific changes to default for device-hba resets | |
615 | * @resetproc: routine to reset controller after a disk reset | |
616 | * @maskproc: special host masking for drive selection | |
617 | * @quirkproc: check host's drive quirk list | |
618 | * | |
619 | * @mdma_filter: filter MDMA modes | |
620 | * @udma_filter: filter UDMA modes | |
621 | * | |
622 | * @cable_detect: detect cable type | |
623 | */ | |
ac95beed | 624 | struct ide_port_ops { |
e6d95bd1 | 625 | void (*init_dev)(ide_drive_t *); |
ac95beed | 626 | void (*set_pio_mode)(ide_drive_t *, const u8); |
ac95beed | 627 | void (*set_dma_mode)(ide_drive_t *, const u8); |
ac95beed | 628 | void (*selectproc)(ide_drive_t *); |
ac95beed | 629 | int (*reset_poll)(ide_drive_t *); |
ac95beed | 630 | void (*pre_reset)(ide_drive_t *); |
ac95beed | 631 | void (*resetproc)(ide_drive_t *); |
ac95beed | 632 | void (*maskproc)(ide_drive_t *, int); |
ac95beed BZ |
633 | void (*quirkproc)(ide_drive_t *); |
634 | ||
635 | u8 (*mdma_filter)(ide_drive_t *); | |
636 | u8 (*udma_filter)(ide_drive_t *); | |
637 | ||
638 | u8 (*cable_detect)(struct hwif_s *); | |
639 | }; | |
640 | ||
5e37bdc0 BZ |
641 | struct ide_dma_ops { |
642 | void (*dma_host_set)(struct ide_drive_s *, int); | |
643 | int (*dma_setup)(struct ide_drive_s *); | |
644 | void (*dma_exec_cmd)(struct ide_drive_s *, u8); | |
645 | void (*dma_start)(struct ide_drive_s *); | |
646 | int (*dma_end)(struct ide_drive_s *); | |
647 | int (*dma_test_irq)(struct ide_drive_s *); | |
648 | void (*dma_lost_irq)(struct ide_drive_s *); | |
649 | void (*dma_timeout)(struct ide_drive_s *); | |
650 | }; | |
651 | ||
08da591e BZ |
652 | struct ide_host; |
653 | ||
1da177e4 LT |
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 | ||
08da591e BZ |
660 | struct ide_host *host; |
661 | ||
1da177e4 LT |
662 | char name[6]; /* name of interface, eg. "ide0" */ |
663 | ||
4c3032d8 BZ |
664 | struct ide_io_ports io_ports; |
665 | ||
1da177e4 | 666 | unsigned long sata_scr[SATA_NR_PORTS]; |
1da177e4 | 667 | |
1da177e4 LT |
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 */ | |
1da177e4 | 673 | |
e95d9c6b | 674 | u32 host_flags; |
6a824c92 | 675 | |
4099d143 BZ |
676 | u8 pio_mask; |
677 | ||
1da177e4 LT |
678 | u8 ultra_mask; |
679 | u8 mwdma_mask; | |
680 | u8 swdma_mask; | |
681 | ||
49521f97 BZ |
682 | u8 cbl; /* cable type */ |
683 | ||
1da177e4 LT |
684 | hwif_chipset_t chipset; /* sub-module for tuning.. */ |
685 | ||
36501650 BZ |
686 | struct device *dev; |
687 | ||
18e181fe BZ |
688 | ide_ack_intr_t *ack_intr; |
689 | ||
1da177e4 LT |
690 | void (*rw_disk)(ide_drive_t *, struct request *); |
691 | ||
374e042c | 692 | const struct ide_tp_ops *tp_ops; |
ac95beed | 693 | const struct ide_port_ops *port_ops; |
f37afdac | 694 | const struct ide_dma_ops *dma_ops; |
bfa14b42 | 695 | |
f0dd8712 | 696 | void (*ide_dma_clear_irq)(ide_drive_t *drive); |
1da177e4 | 697 | |
1da177e4 LT |
698 | /* dma physical region descriptor table (cpu view) */ |
699 | unsigned int *dmatable_cpu; | |
700 | /* dma physical region descriptor table (dma view) */ | |
701 | dma_addr_t dmatable_dma; | |
702 | /* Scatter-gather list used to build the above */ | |
703 | struct scatterlist *sg_table; | |
704 | int sg_max_nents; /* Maximum number of entries in it */ | |
705 | int sg_nents; /* Current number of entries in it */ | |
706 | int sg_dma_direction; /* dma transfer direction */ | |
707 | ||
708 | /* data phase of the active command (currently only valid for PIO/DMA) */ | |
709 | int data_phase; | |
710 | ||
711 | unsigned int nsect; | |
712 | unsigned int nleft; | |
55c16a70 | 713 | struct scatterlist *cursg; |
1da177e4 LT |
714 | unsigned int cursg_ofs; |
715 | ||
1da177e4 LT |
716 | int rqsize; /* max sectors per request */ |
717 | int irq; /* our irq number */ | |
718 | ||
1da177e4 | 719 | unsigned long dma_base; /* base addr for dma ports */ |
1da177e4 | 720 | |
1da177e4 LT |
721 | unsigned long config_data; /* for use by chipset-specific code */ |
722 | unsigned long select_data; /* for use by chipset-specific code */ | |
723 | ||
020e322d SS |
724 | unsigned long extra_base; /* extra addr for dma ports */ |
725 | unsigned extra_ports; /* number of extra dma ports */ | |
726 | ||
1da177e4 | 727 | unsigned present : 1; /* this interface exists */ |
1da177e4 LT |
728 | unsigned serialized : 1; /* serialized all channel operation */ |
729 | unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */ | |
1da177e4 LT |
730 | unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ |
731 | ||
f74c9141 BZ |
732 | struct device gendev; |
733 | struct device *portdev; | |
734 | ||
f36d4024 | 735 | struct completion gendev_rel_comp; /* To deal with device release() */ |
1da177e4 LT |
736 | |
737 | void *hwif_data; /* extra hwif data */ | |
738 | ||
739 | unsigned dma; | |
e3a59b4d HR |
740 | |
741 | #ifdef CONFIG_BLK_DEV_IDEACPI | |
742 | struct ide_acpi_hwif_link *acpidata; | |
743 | #endif | |
22fc6ecc | 744 | } ____cacheline_internodealigned_in_smp ide_hwif_t; |
1da177e4 | 745 | |
48c3c107 BZ |
746 | struct ide_host { |
747 | ide_hwif_t *ports[MAX_HWIFS]; | |
748 | unsigned int n_ports; | |
6cdf6eb3 | 749 | struct device *dev[2]; |
feb22b7f | 750 | unsigned int (*init_chipset)(struct pci_dev *); |
ef0b0427 | 751 | unsigned long host_flags; |
6cdf6eb3 | 752 | void *host_priv; |
48c3c107 BZ |
753 | }; |
754 | ||
1da177e4 LT |
755 | /* |
756 | * internal ide interrupt handler type | |
757 | */ | |
1da177e4 LT |
758 | typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
759 | typedef int (ide_expiry_t)(ide_drive_t *); | |
760 | ||
0eea6458 | 761 | /* used by ide-cd, ide-floppy, etc. */ |
9567b349 | 762 | typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned); |
0eea6458 | 763 | |
1da177e4 LT |
764 | typedef struct hwgroup_s { |
765 | /* irq handler, if active */ | |
766 | ide_startstop_t (*handler)(ide_drive_t *); | |
a6fbb1c8 | 767 | |
1da177e4 LT |
768 | /* BOOL: protects all fields below */ |
769 | volatile int busy; | |
770 | /* BOOL: wake us up on timer expiry */ | |
771 | unsigned int sleeping : 1; | |
772 | /* BOOL: polling active & poll_timeout field valid */ | |
773 | unsigned int polling : 1; | |
913759ac | 774 | |
1da177e4 LT |
775 | /* current drive */ |
776 | ide_drive_t *drive; | |
777 | /* ptr to current hwif in linked-list */ | |
778 | ide_hwif_t *hwif; | |
779 | ||
1da177e4 LT |
780 | /* current request */ |
781 | struct request *rq; | |
a6fbb1c8 | 782 | |
1da177e4 LT |
783 | /* failsafe timer */ |
784 | struct timer_list timer; | |
1da177e4 LT |
785 | /* timeout value during long polls */ |
786 | unsigned long poll_timeout; | |
787 | /* queried upon timeouts */ | |
788 | int (*expiry)(ide_drive_t *); | |
a6fbb1c8 | 789 | |
23450319 SS |
790 | int req_gen; |
791 | int req_gen_timer; | |
1da177e4 LT |
792 | } ide_hwgroup_t; |
793 | ||
7662d046 BZ |
794 | typedef struct ide_driver_s ide_driver_t; |
795 | ||
f9383c42 | 796 | extern struct mutex ide_setting_mtx; |
1da177e4 | 797 | |
92f1f8fd EO |
798 | /* |
799 | * configurable drive settings | |
800 | */ | |
801 | ||
802 | #define DS_SYNC (1 << 0) | |
803 | ||
804 | struct ide_devset { | |
805 | int (*get)(ide_drive_t *); | |
806 | int (*set)(ide_drive_t *, int); | |
807 | unsigned int flags; | |
808 | }; | |
809 | ||
810 | #define __DEVSET(_flags, _get, _set) { \ | |
811 | .flags = _flags, \ | |
812 | .get = _get, \ | |
813 | .set = _set, \ | |
814 | } | |
7662d046 | 815 | |
8185d5aa | 816 | #define ide_devset_get(name, field) \ |
92f1f8fd | 817 | static int get_##name(ide_drive_t *drive) \ |
8185d5aa BZ |
818 | { \ |
819 | return drive->field; \ | |
820 | } | |
821 | ||
822 | #define ide_devset_set(name, field) \ | |
92f1f8fd | 823 | static int set_##name(ide_drive_t *drive, int arg) \ |
8185d5aa BZ |
824 | { \ |
825 | drive->field = arg; \ | |
826 | return 0; \ | |
827 | } | |
828 | ||
92f1f8fd EO |
829 | #define __IDE_DEVSET(_name, _flags, _get, _set) \ |
830 | const struct ide_devset ide_devset_##_name = \ | |
831 | __DEVSET(_flags, _get, _set) | |
832 | ||
833 | #define IDE_DEVSET(_name, _flags, _get, _set) \ | |
834 | static __IDE_DEVSET(_name, _flags, _get, _set) | |
835 | ||
836 | #define ide_devset_rw(_name, _func) \ | |
837 | IDE_DEVSET(_name, 0, get_##_func, set_##_func) | |
838 | ||
839 | #define ide_devset_w(_name, _func) \ | |
840 | IDE_DEVSET(_name, 0, NULL, set_##_func) | |
841 | ||
842 | #define ide_devset_rw_sync(_name, _func) \ | |
843 | IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) | |
844 | ||
845 | #define ide_decl_devset(_name) \ | |
846 | extern const struct ide_devset ide_devset_##_name | |
847 | ||
848 | ide_decl_devset(io_32bit); | |
849 | ide_decl_devset(keepsettings); | |
850 | ide_decl_devset(pio_mode); | |
851 | ide_decl_devset(unmaskirq); | |
852 | ide_decl_devset(using_dma); | |
853 | ||
7662d046 | 854 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 855 | /* |
92f1f8fd | 856 | * /proc/ide interface |
1da177e4 LT |
857 | */ |
858 | ||
92f1f8fd EO |
859 | #define ide_devset_rw_field(_name, _field) \ |
860 | ide_devset_get(_name, _field); \ | |
861 | ide_devset_set(_name, _field); \ | |
862 | IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) | |
863 | ||
864 | struct ide_proc_devset { | |
865 | const char *name; | |
866 | const struct ide_devset *setting; | |
867 | int min, max; | |
868 | int (*mulf)(ide_drive_t *); | |
869 | int (*divf)(ide_drive_t *); | |
8185d5aa BZ |
870 | }; |
871 | ||
92f1f8fd EO |
872 | #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \ |
873 | .name = __stringify(_name), \ | |
874 | .setting = &ide_devset_##_name, \ | |
875 | .min = _min, \ | |
876 | .max = _max, \ | |
877 | .mulf = _mulf, \ | |
878 | .divf = _divf, \ | |
8185d5aa BZ |
879 | } |
880 | ||
92f1f8fd EO |
881 | #define IDE_PROC_DEVSET(_name, _min, _max) \ |
882 | __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL) | |
8185d5aa | 883 | |
1da177e4 LT |
884 | typedef struct { |
885 | const char *name; | |
886 | mode_t mode; | |
887 | read_proc_t *read_proc; | |
888 | write_proc_t *write_proc; | |
889 | } ide_proc_entry_t; | |
890 | ||
ecfd80e4 BZ |
891 | void proc_ide_create(void); |
892 | void proc_ide_destroy(void); | |
5cbf79cd | 893 | void ide_proc_register_port(ide_hwif_t *); |
d9270a3f | 894 | void ide_proc_port_register_devices(ide_hwif_t *); |
5b0c4b30 | 895 | void ide_proc_unregister_device(ide_drive_t *); |
5cbf79cd | 896 | void ide_proc_unregister_port(ide_hwif_t *); |
7662d046 BZ |
897 | void ide_proc_register_driver(ide_drive_t *, ide_driver_t *); |
898 | void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *); | |
899 | ||
1da177e4 LT |
900 | read_proc_t proc_ide_read_capacity; |
901 | read_proc_t proc_ide_read_geometry; | |
902 | ||
1da177e4 LT |
903 | /* |
904 | * Standard exit stuff: | |
905 | */ | |
906 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \ | |
907 | { \ | |
908 | len -= off; \ | |
909 | if (len < count) { \ | |
910 | *eof = 1; \ | |
911 | if (len <= 0) \ | |
912 | return 0; \ | |
913 | } else \ | |
914 | len = count; \ | |
915 | *start = page + off; \ | |
916 | return len; \ | |
917 | } | |
918 | #else | |
ecfd80e4 BZ |
919 | static inline void proc_ide_create(void) { ; } |
920 | static inline void proc_ide_destroy(void) { ; } | |
5cbf79cd | 921 | static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } |
d9270a3f | 922 | static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } |
5b0c4b30 | 923 | static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } |
5cbf79cd | 924 | static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } |
7662d046 BZ |
925 | static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } |
926 | static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } | |
1da177e4 LT |
927 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; |
928 | #endif | |
929 | ||
e1c7c464 BP |
930 | enum { |
931 | /* enter/exit functions */ | |
932 | IDE_DBG_FUNC = (1 << 0), | |
933 | /* sense key/asc handling */ | |
934 | IDE_DBG_SENSE = (1 << 1), | |
935 | /* packet commands handling */ | |
936 | IDE_DBG_PC = (1 << 2), | |
937 | /* request handling */ | |
938 | IDE_DBG_RQ = (1 << 3), | |
939 | /* driver probing/setup */ | |
940 | IDE_DBG_PROBE = (1 << 4), | |
941 | }; | |
942 | ||
943 | /* DRV_NAME has to be defined in the driver before using the macro below */ | |
944 | #define __ide_debug_log(lvl, fmt, args...) \ | |
945 | { \ | |
946 | if (unlikely(drive->debug_mask & lvl)) \ | |
947 | printk(KERN_INFO DRV_NAME ": " fmt, ## args); \ | |
948 | } | |
949 | ||
1da177e4 LT |
950 | /* |
951 | * Power Management step value (rq->pm->pm_step). | |
952 | * | |
953 | * The step value starts at 0 (ide_pm_state_start_suspend) for a | |
954 | * suspend operation or 1000 (ide_pm_state_start_resume) for a | |
955 | * resume operation. | |
956 | * | |
957 | * For each step, the core calls the subdriver start_power_step() first. | |
958 | * This can return: | |
959 | * - ide_stopped : In this case, the core calls us back again unless | |
960 | * step have been set to ide_power_state_completed. | |
961 | * - ide_started : In this case, the channel is left busy until an | |
962 | * async event (interrupt) occurs. | |
963 | * Typically, start_power_step() will issue a taskfile request with | |
964 | * do_rw_taskfile(). | |
965 | * | |
966 | * Upon reception of the interrupt, the core will call complete_power_step() | |
967 | * with the error code if any. This routine should update the step value | |
968 | * and return. It should not start a new request. The core will call | |
969 | * start_power_step for the new step value, unless step have been set to | |
970 | * ide_power_state_completed. | |
971 | * | |
972 | * Subdrivers are expected to define their own additional power | |
973 | * steps from 1..999 for suspend and from 1001..1999 for resume, | |
974 | * other values are reserved for future use. | |
975 | */ | |
976 | ||
977 | enum { | |
978 | ide_pm_state_completed = -1, | |
979 | ide_pm_state_start_suspend = 0, | |
980 | ide_pm_state_start_resume = 1000, | |
981 | }; | |
982 | ||
983 | /* | |
984 | * Subdrivers support. | |
4ef3b8f4 LR |
985 | * |
986 | * The gendriver.owner field should be set to the module owner of this driver. | |
987 | * The gendriver.name field should be set to the name of this driver | |
1da177e4 | 988 | */ |
7662d046 | 989 | struct ide_driver_s { |
1da177e4 LT |
990 | const char *version; |
991 | u8 media; | |
1da177e4 LT |
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); | |
1da177e4 | 995 | struct device_driver gen_driver; |
4031bbe4 RK |
996 | int (*probe)(ide_drive_t *); |
997 | void (*remove)(ide_drive_t *); | |
0d2157f7 | 998 | void (*resume)(ide_drive_t *); |
4031bbe4 | 999 | void (*shutdown)(ide_drive_t *); |
7662d046 | 1000 | #ifdef CONFIG_IDE_PROC_FS |
92f1f8fd EO |
1001 | ide_proc_entry_t *proc; |
1002 | const struct ide_proc_devset *settings; | |
7662d046 BZ |
1003 | #endif |
1004 | }; | |
1da177e4 | 1005 | |
4031bbe4 RK |
1006 | #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver) |
1007 | ||
08da591e BZ |
1008 | int ide_device_get(ide_drive_t *); |
1009 | void ide_device_put(ide_drive_t *); | |
1010 | ||
aa768773 BZ |
1011 | struct ide_ioctl_devset { |
1012 | unsigned int get_ioctl; | |
1013 | unsigned int set_ioctl; | |
92f1f8fd | 1014 | const struct ide_devset *setting; |
aa768773 BZ |
1015 | }; |
1016 | ||
1017 | int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, | |
1018 | unsigned long, const struct ide_ioctl_devset *); | |
1019 | ||
1020 | int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, | |
1021 | unsigned, unsigned long); | |
1da177e4 | 1022 | |
ebae41a5 BZ |
1023 | extern int ide_vlb_clk; |
1024 | extern int ide_pci_clk; | |
1025 | ||
1da177e4 | 1026 | extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs); |
dbe217af AC |
1027 | int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq, |
1028 | int uptodate, int nr_sectors); | |
1da177e4 | 1029 | |
1da177e4 LT |
1030 | extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry); |
1031 | ||
cd2a2d96 BZ |
1032 | void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int, |
1033 | ide_expiry_t *); | |
1da177e4 | 1034 | |
1fc14258 BZ |
1035 | void ide_execute_pkt_cmd(ide_drive_t *); |
1036 | ||
9f87abe8 BZ |
1037 | void ide_pad_transfer(ide_drive_t *, int, int); |
1038 | ||
1da177e4 LT |
1039 | ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); |
1040 | ||
1da177e4 LT |
1041 | ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); |
1042 | ||
4dde4492 | 1043 | void ide_fix_driveid(u16 *); |
01745112 | 1044 | |
1da177e4 LT |
1045 | extern void ide_fixstring(u8 *, const int, const int); |
1046 | ||
b163f46d BZ |
1047 | int ide_busy_sleep(ide_hwif_t *, unsigned long, int); |
1048 | ||
74af21cf | 1049 | int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
1da177e4 | 1050 | |
1da177e4 LT |
1051 | extern ide_startstop_t ide_do_reset (ide_drive_t *); |
1052 | ||
92f1f8fd EO |
1053 | extern int ide_devset_execute(ide_drive_t *drive, |
1054 | const struct ide_devset *setting, int arg); | |
1055 | ||
63f5abb0 | 1056 | extern void ide_do_drive_cmd(ide_drive_t *, struct request *); |
1da177e4 | 1057 | |
1da177e4 LT |
1058 | extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); |
1059 | ||
9e42237f BZ |
1060 | enum { |
1061 | IDE_TFLAG_LBA48 = (1 << 0), | |
74095a91 BZ |
1062 | IDE_TFLAG_FLAGGED = (1 << 2), |
1063 | IDE_TFLAG_OUT_DATA = (1 << 3), | |
1064 | IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4), | |
1065 | IDE_TFLAG_OUT_HOB_NSECT = (1 << 5), | |
1066 | IDE_TFLAG_OUT_HOB_LBAL = (1 << 6), | |
1067 | IDE_TFLAG_OUT_HOB_LBAM = (1 << 7), | |
1068 | IDE_TFLAG_OUT_HOB_LBAH = (1 << 8), | |
1069 | IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE | | |
1070 | IDE_TFLAG_OUT_HOB_NSECT | | |
1071 | IDE_TFLAG_OUT_HOB_LBAL | | |
1072 | IDE_TFLAG_OUT_HOB_LBAM | | |
1073 | IDE_TFLAG_OUT_HOB_LBAH, | |
1074 | IDE_TFLAG_OUT_FEATURE = (1 << 9), | |
1075 | IDE_TFLAG_OUT_NSECT = (1 << 10), | |
1076 | IDE_TFLAG_OUT_LBAL = (1 << 11), | |
1077 | IDE_TFLAG_OUT_LBAM = (1 << 12), | |
1078 | IDE_TFLAG_OUT_LBAH = (1 << 13), | |
1079 | IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE | | |
1080 | IDE_TFLAG_OUT_NSECT | | |
1081 | IDE_TFLAG_OUT_LBAL | | |
1082 | IDE_TFLAG_OUT_LBAM | | |
1083 | IDE_TFLAG_OUT_LBAH, | |
807e35d6 | 1084 | IDE_TFLAG_OUT_DEVICE = (1 << 14), |
ac026ff2 | 1085 | IDE_TFLAG_WRITE = (1 << 15), |
866e2ec9 BZ |
1086 | IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16), |
1087 | IDE_TFLAG_IN_DATA = (1 << 17), | |
57d7366b | 1088 | IDE_TFLAG_CUSTOM_HANDLER = (1 << 18), |
f6e29e35 | 1089 | IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19), |
c2b57cdc BZ |
1090 | IDE_TFLAG_IN_HOB_FEATURE = (1 << 20), |
1091 | IDE_TFLAG_IN_HOB_NSECT = (1 << 21), | |
1092 | IDE_TFLAG_IN_HOB_LBAL = (1 << 22), | |
1093 | IDE_TFLAG_IN_HOB_LBAM = (1 << 23), | |
1094 | IDE_TFLAG_IN_HOB_LBAH = (1 << 24), | |
1095 | IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL | | |
1096 | IDE_TFLAG_IN_HOB_LBAM | | |
1097 | IDE_TFLAG_IN_HOB_LBAH, | |
1098 | IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE | | |
1099 | IDE_TFLAG_IN_HOB_NSECT | | |
1100 | IDE_TFLAG_IN_HOB_LBA, | |
92eb4380 | 1101 | IDE_TFLAG_IN_FEATURE = (1 << 1), |
c2b57cdc BZ |
1102 | IDE_TFLAG_IN_NSECT = (1 << 25), |
1103 | IDE_TFLAG_IN_LBAL = (1 << 26), | |
1104 | IDE_TFLAG_IN_LBAM = (1 << 27), | |
1105 | IDE_TFLAG_IN_LBAH = (1 << 28), | |
1106 | IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL | | |
1107 | IDE_TFLAG_IN_LBAM | | |
1108 | IDE_TFLAG_IN_LBAH, | |
1109 | IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT | | |
1110 | IDE_TFLAG_IN_LBA, | |
1111 | IDE_TFLAG_IN_DEVICE = (1 << 29), | |
657cc1a8 BZ |
1112 | IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB | |
1113 | IDE_TFLAG_IN_HOB, | |
1114 | IDE_TFLAG_TF = IDE_TFLAG_OUT_TF | | |
1115 | IDE_TFLAG_IN_TF, | |
1116 | IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE | | |
1117 | IDE_TFLAG_IN_DEVICE, | |
35cf2b94 TH |
1118 | /* force 16-bit I/O operations */ |
1119 | IDE_TFLAG_IO_16BIT = (1 << 30), | |
395d8ef5 BZ |
1120 | /* ide_task_t was allocated using kmalloc() */ |
1121 | IDE_TFLAG_DYN = (1 << 31), | |
9e42237f BZ |
1122 | }; |
1123 | ||
650d841d BZ |
1124 | struct ide_taskfile { |
1125 | u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */ | |
1126 | ||
1127 | u8 hob_feature; /* 1-5: additional data to support LBA48 */ | |
1128 | u8 hob_nsect; | |
1129 | u8 hob_lbal; | |
1130 | u8 hob_lbam; | |
1131 | u8 hob_lbah; | |
1132 | ||
1133 | u8 data; /* 6: low data byte (for TASKFILE IOCTL) */ | |
1134 | ||
1135 | union { /* 7: */ | |
1136 | u8 error; /* read: error */ | |
1137 | u8 feature; /* write: feature */ | |
1138 | }; | |
1139 | ||
1140 | u8 nsect; /* 8: number of sectors */ | |
1141 | u8 lbal; /* 9: LBA low */ | |
1142 | u8 lbam; /* 10: LBA mid */ | |
1143 | u8 lbah; /* 11: LBA high */ | |
1144 | ||
1145 | u8 device; /* 12: device select */ | |
1146 | ||
1147 | union { /* 13: */ | |
1148 | u8 status; /* read: status */ | |
1149 | u8 command; /* write: command */ | |
1150 | }; | |
1151 | }; | |
1152 | ||
1da177e4 | 1153 | typedef struct ide_task_s { |
650d841d BZ |
1154 | union { |
1155 | struct ide_taskfile tf; | |
1156 | u8 tf_array[14]; | |
1157 | }; | |
866e2ec9 | 1158 | u32 tf_flags; |
1da177e4 | 1159 | int data_phase; |
1da177e4 LT |
1160 | struct request *rq; /* copy of request */ |
1161 | void *special; /* valid_t generally */ | |
1162 | } ide_task_t; | |
1163 | ||
089c5c7e | 1164 | void ide_tf_dump(const char *, struct ide_taskfile *); |
1da177e4 | 1165 | |
374e042c BZ |
1166 | void ide_exec_command(ide_hwif_t *, u8); |
1167 | u8 ide_read_status(ide_hwif_t *); | |
1168 | u8 ide_read_altstatus(ide_hwif_t *); | |
1169 | u8 ide_read_sff_dma_status(ide_hwif_t *); | |
1170 | ||
1171 | void ide_set_irq(ide_hwif_t *, int); | |
1172 | ||
1173 | void ide_tf_load(ide_drive_t *, ide_task_t *); | |
1174 | void ide_tf_read(ide_drive_t *, ide_task_t *); | |
1175 | ||
1176 | void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int); | |
1177 | void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int); | |
1178 | ||
acaa0f5f BZ |
1179 | int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int); |
1180 | ||
1da177e4 | 1181 | extern void SELECT_DRIVE(ide_drive_t *); |
ed4af48f | 1182 | void SELECT_MASK(ide_drive_t *, int); |
1da177e4 | 1183 | |
92eb4380 | 1184 | u8 ide_read_error(ide_drive_t *); |
1823649b | 1185 | void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); |
92eb4380 | 1186 | |
1da177e4 | 1187 | extern int drive_is_ready(ide_drive_t *); |
1da177e4 | 1188 | |
2fc57388 BZ |
1189 | void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8); |
1190 | ||
51509eec BZ |
1191 | int ide_check_atapi_device(ide_drive_t *, const char *); |
1192 | ||
7bf7420a BZ |
1193 | void ide_init_pc(struct ide_atapi_pc *); |
1194 | ||
7645c151 BZ |
1195 | /* |
1196 | * Special requests for ide-tape block device strategy routine. | |
1197 | * | |
1198 | * In order to service a character device command, we add special requests to | |
1199 | * the tail of our block device request queue and wait for their completion. | |
1200 | */ | |
1201 | enum { | |
1202 | REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ | |
1203 | REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ | |
1204 | REQ_IDETAPE_READ = (1 << 2), | |
1205 | REQ_IDETAPE_WRITE = (1 << 3), | |
1206 | }; | |
1207 | ||
2ac07d92 | 1208 | int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *); |
7645c151 | 1209 | |
de699ad5 | 1210 | int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); |
0c8a6c7a | 1211 | int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); |
0578042d | 1212 | int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); |
6b0da28b BZ |
1213 | void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); |
1214 | void ide_retry_pc(ide_drive_t *, struct gendisk *); | |
0578042d | 1215 | |
844b9468 BZ |
1216 | static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc) |
1217 | { | |
1218 | return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies); | |
1219 | } | |
1220 | ||
1221 | int ide_scsi_expiry(ide_drive_t *); | |
1222 | ||
baf08f0b | 1223 | ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *); |
594c16d8 | 1224 | |
f6e29e35 | 1225 | ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); |
1da177e4 | 1226 | |
4d7a984b TH |
1227 | void task_end_request(ide_drive_t *, struct request *, u8); |
1228 | ||
ac026ff2 | 1229 | int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16); |
9a3c49be BZ |
1230 | int ide_no_data_taskfile(ide_drive_t *, ide_task_t *); |
1231 | ||
1da177e4 | 1232 | int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long); |
1da177e4 | 1233 | |
1da177e4 | 1234 | extern int ide_driveid_update(ide_drive_t *); |
1da177e4 LT |
1235 | extern int ide_config_drive_speed(ide_drive_t *, u8); |
1236 | extern u8 eighty_ninty_three (ide_drive_t *); | |
1da177e4 LT |
1237 | extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
1238 | ||
1239 | extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); | |
1240 | ||
1da177e4 LT |
1241 | extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
1242 | ||
1da177e4 | 1243 | extern void ide_timer_expiry(unsigned long); |
7d12e780 | 1244 | extern irqreturn_t ide_intr(int irq, void *dev_id); |
165125e1 | 1245 | extern void do_ide_request(struct request_queue *); |
1da177e4 LT |
1246 | |
1247 | void ide_init_disk(struct gendisk *, ide_drive_t *); | |
1248 | ||
6d208b39 | 1249 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
725522b5 GKH |
1250 | extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); |
1251 | #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) | |
6d208b39 BZ |
1252 | #else |
1253 | #define ide_pci_register_driver(d) pci_register_driver(d) | |
1254 | #endif | |
1255 | ||
c97c6aca | 1256 | void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, |
48c3c107 | 1257 | hw_regs_t *, hw_regs_t **); |
85620436 | 1258 | void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); |
1da177e4 | 1259 | |
8e882ba1 | 1260 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
b123f56e BZ |
1261 | int ide_pci_set_master(struct pci_dev *, const char *); |
1262 | unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); | |
ebb00fb5 | 1263 | int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); |
b123f56e | 1264 | int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); |
c413b9b9 | 1265 | #else |
b123f56e BZ |
1266 | static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, |
1267 | const struct ide_port_info *d) | |
1268 | { | |
1269 | return -EINVAL; | |
1270 | } | |
c413b9b9 BZ |
1271 | #endif |
1272 | ||
1da177e4 LT |
1273 | typedef struct ide_pci_enablebit_s { |
1274 | u8 reg; /* byte pci reg holding the enable-bit */ | |
1275 | u8 mask; /* mask to isolate the enable-bit */ | |
1276 | u8 val; /* value of masked reg when "enabled" */ | |
1277 | } ide_pci_enablebit_t; | |
1278 | ||
1279 | enum { | |
1280 | /* Uses ISA control ports not PCI ones. */ | |
a5d8c5c8 | 1281 | IDE_HFLAG_ISA_PORTS = (1 << 0), |
6a824c92 | 1282 | /* single port device */ |
a5d8c5c8 | 1283 | IDE_HFLAG_SINGLE = (1 << 1), |
6a824c92 BZ |
1284 | /* don't use legacy PIO blacklist */ |
1285 | IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), | |
e277f91f BZ |
1286 | /* set for the second port of QD65xx */ |
1287 | IDE_HFLAG_QD_2ND_PORT = (1 << 3), | |
26bcb879 BZ |
1288 | /* use PIO8/9 for prefetch off/on */ |
1289 | IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), | |
1290 | /* use PIO6/7 for fast-devsel off/on */ | |
1291 | IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), | |
1292 | /* use 100-102 and 200-202 PIO values to set DMA modes */ | |
1293 | IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), | |
aedea591 BZ |
1294 | /* |
1295 | * keep DMA setting when programming PIO mode, may be used only | |
1296 | * for hosts which have separate PIO and DMA timings (ie. PMAC) | |
1297 | */ | |
1298 | IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), | |
88b2b32b BZ |
1299 | /* program host for the transfer mode after programming device */ |
1300 | IDE_HFLAG_POST_SET_MODE = (1 << 8), | |
1301 | /* don't program host/device for the transfer mode ("smart" hosts) */ | |
1302 | IDE_HFLAG_NO_SET_MODE = (1 << 9), | |
0ae2e178 BZ |
1303 | /* trust BIOS for programming chipset/device for DMA */ |
1304 | IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), | |
cafa027b BZ |
1305 | /* host is CS5510/CS5520 */ |
1306 | IDE_HFLAG_CS5520 = (1 << 11), | |
33c1002e BZ |
1307 | /* ATAPI DMA is unsupported */ |
1308 | IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), | |
5e71d9c5 BZ |
1309 | /* set if host is a "non-bootable" controller */ |
1310 | IDE_HFLAG_NON_BOOTABLE = (1 << 13), | |
47b68788 BZ |
1311 | /* host doesn't support DMA */ |
1312 | IDE_HFLAG_NO_DMA = (1 << 14), | |
1313 | /* check if host is PCI IDE device before allowing DMA */ | |
1314 | IDE_HFLAG_NO_AUTODMA = (1 << 15), | |
c5dd43ec BZ |
1315 | /* host uses MMIO */ |
1316 | IDE_HFLAG_MMIO = (1 << 16), | |
238e4f14 BZ |
1317 | /* no LBA48 */ |
1318 | IDE_HFLAG_NO_LBA48 = (1 << 17), | |
1319 | /* no LBA48 DMA */ | |
1320 | IDE_HFLAG_NO_LBA48_DMA = (1 << 18), | |
ed67b923 BZ |
1321 | /* data FIFO is cleared by an error */ |
1322 | IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), | |
1c51361a BZ |
1323 | /* serialize ports */ |
1324 | IDE_HFLAG_SERIALIZE = (1 << 20), | |
3985ee3b BZ |
1325 | /* use legacy IRQs */ |
1326 | IDE_HFLAG_LEGACY_IRQS = (1 << 21), | |
8acf28c0 BZ |
1327 | /* force use of legacy IRQs */ |
1328 | IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22), | |
272a3709 BZ |
1329 | /* limit LBA48 requests to 256 sectors */ |
1330 | IDE_HFLAG_RQSIZE_256 = (1 << 23), | |
caea7602 BZ |
1331 | /* use 32-bit I/O ops */ |
1332 | IDE_HFLAG_IO_32BIT = (1 << 24), | |
1333 | /* unmask IRQs */ | |
1334 | IDE_HFLAG_UNMASK_IRQS = (1 << 25), | |
1fd18905 BZ |
1335 | /* serialize ports if DMA is possible (for sl82c105) */ |
1336 | IDE_HFLAG_SERIALIZE_DMA = (1 << 27), | |
8ac2b42a BZ |
1337 | /* force host out of "simplex" mode */ |
1338 | IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), | |
4166c199 BZ |
1339 | /* DSC overlap is unsupported */ |
1340 | IDE_HFLAG_NO_DSC = (1 << 29), | |
807b90d0 BZ |
1341 | /* never use 32-bit I/O ops */ |
1342 | IDE_HFLAG_NO_IO_32BIT = (1 << 30), | |
1343 | /* never unmask IRQs */ | |
1344 | IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), | |
1da177e4 LT |
1345 | }; |
1346 | ||
7cab14a7 | 1347 | #ifdef CONFIG_BLK_DEV_OFFBOARD |
7cab14a7 | 1348 | # define IDE_HFLAG_OFF_BOARD 0 |
5e71d9c5 BZ |
1349 | #else |
1350 | # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE | |
7cab14a7 BZ |
1351 | #endif |
1352 | ||
039788e1 | 1353 | struct ide_port_info { |
1da177e4 | 1354 | char *name; |
a326b02b | 1355 | unsigned int (*init_chipset)(struct pci_dev *); |
1da177e4 LT |
1356 | void (*init_iops)(ide_hwif_t *); |
1357 | void (*init_hwif)(ide_hwif_t *); | |
b123f56e BZ |
1358 | int (*init_dma)(ide_hwif_t *, |
1359 | const struct ide_port_info *); | |
ac95beed | 1360 | |
374e042c | 1361 | const struct ide_tp_ops *tp_ops; |
ac95beed | 1362 | const struct ide_port_ops *port_ops; |
f37afdac | 1363 | const struct ide_dma_ops *dma_ops; |
ac95beed | 1364 | |
1da177e4 | 1365 | ide_pci_enablebit_t enablebits[2]; |
528a572d | 1366 | hwif_chipset_t chipset; |
9ffcf364 | 1367 | u32 host_flags; |
4099d143 | 1368 | u8 pio_mask; |
5f8b6c34 BZ |
1369 | u8 swdma_mask; |
1370 | u8 mwdma_mask; | |
18137207 | 1371 | u8 udma_mask; |
039788e1 | 1372 | }; |
1da177e4 | 1373 | |
6cdf6eb3 BZ |
1374 | int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); |
1375 | int ide_pci_init_two(struct pci_dev *, struct pci_dev *, | |
1376 | const struct ide_port_info *, void *); | |
ef0b0427 | 1377 | void ide_pci_remove(struct pci_dev *); |
1da177e4 | 1378 | |
feb22b7f BZ |
1379 | #ifdef CONFIG_PM |
1380 | int ide_pci_suspend(struct pci_dev *, pm_message_t); | |
1381 | int ide_pci_resume(struct pci_dev *); | |
1382 | #else | |
1383 | #define ide_pci_suspend NULL | |
1384 | #define ide_pci_resume NULL | |
1385 | #endif | |
1386 | ||
1da177e4 LT |
1387 | void ide_map_sg(ide_drive_t *, struct request *); |
1388 | void ide_init_sg_cmd(ide_drive_t *, struct request *); | |
1389 | ||
1390 | #define BAD_DMA_DRIVE 0 | |
1391 | #define GOOD_DMA_DRIVE 1 | |
1392 | ||
65e5f2e3 JC |
1393 | struct drive_list_entry { |
1394 | const char *id_model; | |
1395 | const char *id_firmware; | |
1396 | }; | |
1397 | ||
4dde4492 | 1398 | int ide_in_drive_list(u16 *, const struct drive_list_entry *); |
a5b7e70d BZ |
1399 | |
1400 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
1da177e4 | 1401 | int __ide_dma_bad_drive(ide_drive_t *); |
3ab7efe8 | 1402 | int ide_id_dma_bug(ide_drive_t *); |
7670df73 BZ |
1403 | |
1404 | u8 ide_find_dma_mode(ide_drive_t *, u8); | |
1405 | ||
1406 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) | |
1407 | { | |
1408 | return ide_find_dma_mode(drive, XFER_UDMA_6); | |
1409 | } | |
1410 | ||
4a546e04 | 1411 | void ide_dma_off_quietly(ide_drive_t *); |
7469aaf6 | 1412 | void ide_dma_off(ide_drive_t *); |
4a546e04 | 1413 | void ide_dma_on(ide_drive_t *); |
3608b5d7 | 1414 | int ide_set_dma(ide_drive_t *); |
578cfa0d | 1415 | void ide_check_dma_crc(ide_drive_t *); |
1da177e4 LT |
1416 | ide_startstop_t ide_dma_intr(ide_drive_t *); |
1417 | ||
062f9f02 BZ |
1418 | int ide_build_sglist(ide_drive_t *, struct request *); |
1419 | void ide_destroy_dmatable(ide_drive_t *); | |
1420 | ||
8e882ba1 | 1421 | #ifdef CONFIG_BLK_DEV_IDEDMA_SFF |
1da177e4 | 1422 | extern int ide_build_dmatable(ide_drive_t *, struct request *); |
b8e73fba BZ |
1423 | int ide_allocate_dma_engine(ide_hwif_t *); |
1424 | void ide_release_dma_engine(ide_hwif_t *); | |
1da177e4 | 1425 | |
15ce926a | 1426 | void ide_dma_host_set(ide_drive_t *, int); |
1da177e4 | 1427 | extern int ide_dma_setup(ide_drive_t *); |
f37afdac | 1428 | void ide_dma_exec_cmd(ide_drive_t *, u8); |
1da177e4 LT |
1429 | extern void ide_dma_start(ide_drive_t *); |
1430 | extern int __ide_dma_end(ide_drive_t *); | |
f37afdac | 1431 | int ide_dma_test_irq(ide_drive_t *); |
841d2a9b | 1432 | extern void ide_dma_lost_irq(ide_drive_t *); |
c283f5db | 1433 | extern void ide_dma_timeout(ide_drive_t *); |
71fc9fcc | 1434 | extern const struct ide_dma_ops sff_dma_ops; |
8e882ba1 | 1435 | #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ |
1da177e4 LT |
1436 | |
1437 | #else | |
3ab7efe8 | 1438 | static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; } |
7670df73 | 1439 | static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } |
2d5eaa6d | 1440 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } |
4a546e04 | 1441 | static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } |
7469aaf6 | 1442 | static inline void ide_dma_off(ide_drive_t *drive) { ; } |
4a546e04 | 1443 | static inline void ide_dma_on(ide_drive_t *drive) { ; } |
1da177e4 | 1444 | static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
3608b5d7 | 1445 | static inline int ide_set_dma(ide_drive_t *drive) { return 1; } |
578cfa0d | 1446 | static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } |
1da177e4 LT |
1447 | #endif /* CONFIG_BLK_DEV_IDEDMA */ |
1448 | ||
8e882ba1 | 1449 | #ifndef CONFIG_BLK_DEV_IDEDMA_SFF |
0d1bad21 | 1450 | static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } |
1da177e4 LT |
1451 | #endif |
1452 | ||
e3a59b4d HR |
1453 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1454 | extern int ide_acpi_exec_tfs(ide_drive_t *drive); | |
1455 | extern void ide_acpi_get_timing(ide_hwif_t *hwif); | |
1456 | extern void ide_acpi_push_timing(ide_hwif_t *hwif); | |
1457 | extern void ide_acpi_init(ide_hwif_t *hwif); | |
eafd88a3 | 1458 | void ide_acpi_port_init_devices(ide_hwif_t *); |
5e32132b | 1459 | extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); |
e3a59b4d HR |
1460 | #else |
1461 | static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } | |
1462 | static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } | |
1463 | static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } | |
1464 | static inline void ide_acpi_init(ide_hwif_t *hwif) { ; } | |
eafd88a3 | 1465 | static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } |
5e32132b | 1466 | static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} |
e3a59b4d HR |
1467 | #endif |
1468 | ||
fbd13088 | 1469 | void ide_remove_port_from_hwgroup(ide_hwif_t *); |
387750c3 | 1470 | void ide_unregister(ide_hwif_t *); |
1da177e4 LT |
1471 | |
1472 | void ide_register_region(struct gendisk *); | |
1473 | void ide_unregister_region(struct gendisk *); | |
1474 | ||
f01393e4 | 1475 | void ide_undecoded_slave(ide_drive_t *); |
1da177e4 | 1476 | |
9fd91d95 BZ |
1477 | void ide_port_apply_params(ide_hwif_t *); |
1478 | ||
48c3c107 BZ |
1479 | struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **); |
1480 | struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **); | |
8a69580e | 1481 | void ide_host_free(struct ide_host *); |
48c3c107 BZ |
1482 | int ide_host_register(struct ide_host *, const struct ide_port_info *, |
1483 | hw_regs_t **); | |
6f904d01 BZ |
1484 | int ide_host_add(const struct ide_port_info *, hw_regs_t **, |
1485 | struct ide_host **); | |
48c3c107 | 1486 | void ide_host_remove(struct ide_host *); |
0bfeee7d | 1487 | int ide_legacy_device_add(const struct ide_port_info *, unsigned long); |
2dde7861 BZ |
1488 | void ide_port_unregister_devices(ide_hwif_t *); |
1489 | void ide_port_scan(ide_hwif_t *); | |
1da177e4 LT |
1490 | |
1491 | static inline void *ide_get_hwifdata (ide_hwif_t * hwif) | |
1492 | { | |
1493 | return hwif->hwif_data; | |
1494 | } | |
1495 | ||
1496 | static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) | |
1497 | { | |
1498 | hwif->hwif_data = data; | |
1499 | } | |
1500 | ||
3ab7efe8 | 1501 | const char *ide_xfer_verbose(u8 mode); |
1da177e4 LT |
1502 | extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
1503 | extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate); | |
1504 | ||
a501633c | 1505 | u64 ide_get_lba_addr(struct ide_taskfile *, int); |
1da177e4 LT |
1506 | u8 ide_dump_status(ide_drive_t *, const char *, u8); |
1507 | ||
3be53f3f BZ |
1508 | struct ide_timing { |
1509 | u8 mode; | |
1510 | u8 setup; /* t1 */ | |
1511 | u16 act8b; /* t2 for 8-bit io */ | |
1512 | u16 rec8b; /* t2i for 8-bit io */ | |
1513 | u16 cyc8b; /* t0 for 8-bit io */ | |
1514 | u16 active; /* t2 or tD */ | |
1515 | u16 recover; /* t2i or tK */ | |
1516 | u16 cycle; /* t0 */ | |
1517 | u16 udma; /* t2CYCTYP/2 */ | |
1518 | }; | |
1519 | ||
1520 | enum { | |
1521 | IDE_TIMING_SETUP = (1 << 0), | |
1522 | IDE_TIMING_ACT8B = (1 << 1), | |
1523 | IDE_TIMING_REC8B = (1 << 2), | |
1524 | IDE_TIMING_CYC8B = (1 << 3), | |
1525 | IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | | |
1526 | IDE_TIMING_CYC8B, | |
1527 | IDE_TIMING_ACTIVE = (1 << 4), | |
1528 | IDE_TIMING_RECOVER = (1 << 5), | |
1529 | IDE_TIMING_CYCLE = (1 << 6), | |
1530 | IDE_TIMING_UDMA = (1 << 7), | |
1531 | IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | | |
1532 | IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | | |
1533 | IDE_TIMING_CYCLE | IDE_TIMING_UDMA, | |
1534 | }; | |
1535 | ||
f06ab340 | 1536 | struct ide_timing *ide_timing_find_mode(u8); |
c9d6c1a2 | 1537 | u16 ide_pio_cycle_time(ide_drive_t *, u8); |
f06ab340 BZ |
1538 | void ide_timing_merge(struct ide_timing *, struct ide_timing *, |
1539 | struct ide_timing *, unsigned int); | |
1540 | int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); | |
1541 | ||
9ad54093 BZ |
1542 | int ide_scan_pio_blacklist(char *); |
1543 | ||
2134758d | 1544 | u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8); |
1da177e4 | 1545 | |
88b2b32b BZ |
1546 | int ide_set_pio_mode(ide_drive_t *, u8); |
1547 | int ide_set_dma_mode(ide_drive_t *, u8); | |
1548 | ||
26bcb879 BZ |
1549 | void ide_set_pio(ide_drive_t *, u8); |
1550 | ||
1551 | static inline void ide_set_max_pio(ide_drive_t *drive) | |
1552 | { | |
1553 | ide_set_pio(drive, 255); | |
1554 | } | |
1da177e4 LT |
1555 | |
1556 | extern spinlock_t ide_lock; | |
ef29888e | 1557 | extern struct mutex ide_cfg_mtx; |
1da177e4 LT |
1558 | /* |
1559 | * Structure locking: | |
1560 | * | |
ef29888e | 1561 | * ide_cfg_mtx and ide_lock together protect changes to |
1da177e4 LT |
1562 | * ide_hwif_t->{next,hwgroup} |
1563 | * ide_drive_t->next | |
1564 | * | |
1565 | * ide_hwgroup_t->busy: ide_lock | |
1566 | * ide_hwgroup_t->hwif: ide_lock | |
1567 | * ide_hwif_t->mate: constant, no locking | |
1568 | * ide_drive_t->hwif: constant, no locking | |
1569 | */ | |
1570 | ||
366c7f55 | 1571 | #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0) |
1da177e4 LT |
1572 | |
1573 | extern struct bus_type ide_bus_type; | |
f74c9141 | 1574 | extern struct class *ide_port_class; |
1da177e4 | 1575 | |
7b9f25b5 BZ |
1576 | static inline void ide_dump_identify(u8 *id) |
1577 | { | |
1578 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); | |
1579 | } | |
1580 | ||
86b37860 CL |
1581 | static inline int hwif_to_node(ide_hwif_t *hwif) |
1582 | { | |
96f80219 | 1583 | return hwif->dev ? dev_to_node(hwif->dev) : -1; |
86b37860 CL |
1584 | } |
1585 | ||
7e59ea21 | 1586 | static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) |
1b678347 | 1587 | { |
7e59ea21 | 1588 | ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1]; |
1b678347 | 1589 | |
7e59ea21 | 1590 | return peer->present ? peer : NULL; |
1b678347 | 1591 | } |
1da177e4 | 1592 | #endif /* _IDE_H */ |