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1da177e4 LT |
1 | #include <linux/module.h> |
2 | #include <linux/types.h> | |
3 | #include <linux/string.h> | |
4 | #include <linux/kernel.h> | |
5 | #include <linux/timer.h> | |
6 | #include <linux/mm.h> | |
7 | #include <linux/interrupt.h> | |
8 | #include <linux/major.h> | |
9 | #include <linux/errno.h> | |
10 | #include <linux/genhd.h> | |
11 | #include <linux/blkpg.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/pci.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/hdreg.h> | |
16 | #include <linux/ide.h> | |
17 | #include <linux/bitops.h> | |
18 | ||
19 | #include <asm/byteorder.h> | |
20 | #include <asm/irq.h> | |
21 | #include <asm/uaccess.h> | |
22 | #include <asm/io.h> | |
23 | ||
24 | /* | |
25 | * IDE library routines. These are plug in code that most | |
26 | * drivers can use but occasionally may be weird enough | |
27 | * to want to do their own thing with | |
28 | * | |
29 | * Add common non I/O op stuff here. Make sure it has proper | |
30 | * kernel-doc function headers or your patch will be rejected | |
31 | */ | |
3ab7efe8 BZ |
32 | |
33 | static const char *udma_str[] = | |
34 | { "UDMA/16", "UDMA/25", "UDMA/33", "UDMA/44", | |
35 | "UDMA/66", "UDMA/100", "UDMA/133", "UDMA7" }; | |
36 | static const char *mwdma_str[] = | |
37 | { "MWDMA0", "MWDMA1", "MWDMA2" }; | |
38 | static const char *swdma_str[] = | |
39 | { "SWDMA0", "SWDMA1", "SWDMA2" }; | |
40 | static const char *pio_str[] = | |
41 | { "PIO0", "PIO1", "PIO2", "PIO3", "PIO4", "PIO5" }; | |
1da177e4 LT |
42 | |
43 | /** | |
44 | * ide_xfer_verbose - return IDE mode names | |
3ab7efe8 | 45 | * @mode: transfer mode |
1da177e4 LT |
46 | * |
47 | * Returns a constant string giving the name of the mode | |
48 | * requested. | |
49 | */ | |
50 | ||
3ab7efe8 | 51 | const char *ide_xfer_verbose(u8 mode) |
1da177e4 | 52 | { |
3ab7efe8 BZ |
53 | const char *s; |
54 | u8 i = mode & 0xf; | |
55 | ||
56 | if (mode >= XFER_UDMA_0 && mode <= XFER_UDMA_7) | |
57 | s = udma_str[i]; | |
58 | else if (mode >= XFER_MW_DMA_0 && mode <= XFER_MW_DMA_2) | |
59 | s = mwdma_str[i]; | |
60 | else if (mode >= XFER_SW_DMA_0 && mode <= XFER_SW_DMA_2) | |
61 | s = swdma_str[i]; | |
62 | else if (mode >= XFER_PIO_0 && mode <= XFER_PIO_5) | |
63 | s = pio_str[i & 0x7]; | |
64 | else if (mode == XFER_PIO_SLOW) | |
65 | s = "PIO SLOW"; | |
66 | else | |
67 | s = "XFER ERROR"; | |
68 | ||
69 | return s; | |
1da177e4 LT |
70 | } |
71 | ||
72 | EXPORT_SYMBOL(ide_xfer_verbose); | |
73 | ||
74 | /** | |
2d5eaa6d BZ |
75 | * ide_rate_filter - filter transfer mode |
76 | * @drive: IDE device | |
1da177e4 LT |
77 | * @speed: desired speed |
78 | * | |
2d5eaa6d | 79 | * Given the available transfer modes this function returns |
1da177e4 | 80 | * the best available speed at or below the speed requested. |
2d5eaa6d | 81 | * |
7670df73 | 82 | * TODO: check device PIO capabilities |
1da177e4 LT |
83 | */ |
84 | ||
f212ff28 | 85 | static u8 ide_rate_filter(ide_drive_t *drive, u8 speed) |
1da177e4 | 86 | { |
2d5eaa6d | 87 | ide_hwif_t *hwif = drive->hwif; |
7670df73 | 88 | u8 mode = ide_find_dma_mode(drive, speed); |
2d5eaa6d | 89 | |
7670df73 BZ |
90 | if (mode == 0) { |
91 | if (hwif->pio_mask) | |
92 | mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0; | |
93 | else | |
94 | mode = XFER_PIO_4; | |
95 | } | |
1da177e4 LT |
96 | |
97 | // printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed); | |
98 | ||
2d5eaa6d | 99 | return min(speed, mode); |
1da177e4 LT |
100 | } |
101 | ||
1da177e4 LT |
102 | /* |
103 | * Standard (generic) timings for PIO modes, from ATA2 specification. | |
104 | * These timings are for access to the IDE data port register *only*. | |
105 | * Some drives may specify a mode, while also specifying a different | |
106 | * value for cycle_time (from drive identification data). | |
107 | */ | |
108 | const ide_pio_timings_t ide_pio_timings[6] = { | |
109 | { 70, 165, 600 }, /* PIO Mode 0 */ | |
110 | { 50, 125, 383 }, /* PIO Mode 1 */ | |
111 | { 30, 100, 240 }, /* PIO Mode 2 */ | |
112 | { 30, 80, 180 }, /* PIO Mode 3 with IORDY */ | |
113 | { 25, 70, 120 }, /* PIO Mode 4 with IORDY */ | |
114 | { 20, 50, 100 } /* PIO Mode 5 with IORDY (nonstandard) */ | |
115 | }; | |
116 | ||
117 | EXPORT_SYMBOL_GPL(ide_pio_timings); | |
118 | ||
119 | /* | |
120 | * Shared data/functions for determining best PIO mode for an IDE drive. | |
121 | * Most of this stuff originally lived in cmd640.c, and changes to the | |
122 | * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid | |
123 | * breaking the fragile cmd640.c support. | |
124 | */ | |
125 | ||
126 | /* | |
127 | * Black list. Some drives incorrectly report their maximal PIO mode, | |
128 | * at least in respect to CMD640. Here we keep info on some known drives. | |
129 | */ | |
130 | static struct ide_pio_info { | |
131 | const char *name; | |
132 | int pio; | |
133 | } ide_pio_blacklist [] = { | |
134 | /* { "Conner Peripherals 1275MB - CFS1275A", 4 }, */ | |
135 | { "Conner Peripherals 540MB - CFS540A", 3 }, | |
136 | ||
137 | { "WDC AC2700", 3 }, | |
138 | { "WDC AC2540", 3 }, | |
139 | { "WDC AC2420", 3 }, | |
140 | { "WDC AC2340", 3 }, | |
141 | { "WDC AC2250", 0 }, | |
142 | { "WDC AC2200", 0 }, | |
143 | { "WDC AC21200", 4 }, | |
144 | { "WDC AC2120", 0 }, | |
145 | { "WDC AC2850", 3 }, | |
146 | { "WDC AC1270", 3 }, | |
147 | { "WDC AC1170", 1 }, | |
148 | { "WDC AC1210", 1 }, | |
149 | { "WDC AC280", 0 }, | |
150 | /* { "WDC AC21000", 4 }, */ | |
151 | { "WDC AC31000", 3 }, | |
152 | { "WDC AC31200", 3 }, | |
153 | /* { "WDC AC31600", 4 }, */ | |
154 | ||
155 | { "Maxtor 7131 AT", 1 }, | |
156 | { "Maxtor 7171 AT", 1 }, | |
157 | { "Maxtor 7213 AT", 1 }, | |
158 | { "Maxtor 7245 AT", 1 }, | |
159 | { "Maxtor 7345 AT", 1 }, | |
160 | { "Maxtor 7546 AT", 3 }, | |
161 | { "Maxtor 7540 AV", 3 }, | |
162 | ||
163 | { "SAMSUNG SHD-3121A", 1 }, | |
164 | { "SAMSUNG SHD-3122A", 1 }, | |
165 | { "SAMSUNG SHD-3172A", 1 }, | |
166 | ||
167 | /* { "ST51080A", 4 }, | |
168 | * { "ST51270A", 4 }, | |
169 | * { "ST31220A", 4 }, | |
170 | * { "ST31640A", 4 }, | |
171 | * { "ST32140A", 4 }, | |
172 | * { "ST3780A", 4 }, | |
173 | */ | |
174 | { "ST5660A", 3 }, | |
175 | { "ST3660A", 3 }, | |
176 | { "ST3630A", 3 }, | |
177 | { "ST3655A", 3 }, | |
178 | { "ST3391A", 3 }, | |
179 | { "ST3390A", 1 }, | |
180 | { "ST3600A", 1 }, | |
181 | { "ST3290A", 0 }, | |
182 | { "ST3144A", 0 }, | |
183 | { "ST3491A", 1 }, /* reports 3, should be 1 or 2 (depending on */ | |
184 | /* drive) according to Seagates FIND-ATA program */ | |
185 | ||
186 | { "QUANTUM ELS127A", 0 }, | |
187 | { "QUANTUM ELS170A", 0 }, | |
188 | { "QUANTUM LPS240A", 0 }, | |
189 | { "QUANTUM LPS210A", 3 }, | |
190 | { "QUANTUM LPS270A", 3 }, | |
191 | { "QUANTUM LPS365A", 3 }, | |
192 | { "QUANTUM LPS540A", 3 }, | |
193 | { "QUANTUM LIGHTNING 540A", 3 }, | |
194 | { "QUANTUM LIGHTNING 730A", 3 }, | |
195 | ||
196 | { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */ | |
197 | { "QUANTUM FIREBALL_640", 3 }, | |
198 | { "QUANTUM FIREBALL_1080", 3 }, | |
199 | { "QUANTUM FIREBALL_1280", 3 }, | |
200 | { NULL, 0 } | |
201 | }; | |
202 | ||
203 | /** | |
204 | * ide_scan_pio_blacklist - check for a blacklisted drive | |
205 | * @model: Drive model string | |
206 | * | |
207 | * This routine searches the ide_pio_blacklist for an entry | |
208 | * matching the start/whole of the supplied model name. | |
209 | * | |
210 | * Returns -1 if no match found. | |
211 | * Otherwise returns the recommended PIO mode from ide_pio_blacklist[]. | |
212 | */ | |
213 | ||
214 | static int ide_scan_pio_blacklist (char *model) | |
215 | { | |
216 | struct ide_pio_info *p; | |
217 | ||
218 | for (p = ide_pio_blacklist; p->name != NULL; p++) { | |
219 | if (strncmp(p->name, model, strlen(p->name)) == 0) | |
220 | return p->pio; | |
221 | } | |
222 | return -1; | |
223 | } | |
224 | ||
7dd00083 BZ |
225 | unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio) |
226 | { | |
227 | struct hd_driveid *id = drive->id; | |
228 | int cycle_time = 0; | |
229 | ||
230 | if (id->field_valid & 2) { | |
231 | if (id->capability & 8) | |
232 | cycle_time = id->eide_pio_iordy; | |
233 | else | |
234 | cycle_time = id->eide_pio; | |
235 | } | |
236 | ||
237 | /* conservative "downgrade" for all pre-ATA2 drives */ | |
238 | if (pio < 3) { | |
239 | if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time) | |
240 | cycle_time = 0; /* use standard timing */ | |
241 | } | |
242 | ||
243 | return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time; | |
244 | } | |
245 | ||
246 | EXPORT_SYMBOL_GPL(ide_pio_cycle_time); | |
247 | ||
1da177e4 LT |
248 | /** |
249 | * ide_get_best_pio_mode - get PIO mode from drive | |
81d368e0 | 250 | * @drive: drive to consider |
1da177e4 | 251 | * @mode_wanted: preferred mode |
81d368e0 | 252 | * @max_mode: highest allowed mode |
1da177e4 LT |
253 | * |
254 | * This routine returns the recommended PIO settings for a given drive, | |
255 | * based on the drive->id information and the ide_pio_blacklist[]. | |
1da177e4 | 256 | * |
81d368e0 SS |
257 | * Drive PIO mode is auto-selected if 255 is passed as mode_wanted. |
258 | * This is used by most chipset support modules when "auto-tuning". | |
1da177e4 LT |
259 | */ |
260 | ||
2134758d | 261 | u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode) |
1da177e4 LT |
262 | { |
263 | int pio_mode; | |
1da177e4 LT |
264 | struct hd_driveid* id = drive->id; |
265 | int overridden = 0; | |
1da177e4 | 266 | |
6a824c92 BZ |
267 | if (mode_wanted != 255) |
268 | return min_t(u8, mode_wanted, max_mode); | |
269 | ||
270 | if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 && | |
271 | (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) { | |
342cdb6d | 272 | printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); |
1da177e4 LT |
273 | } else { |
274 | pio_mode = id->tPIO; | |
275 | if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ | |
276 | pio_mode = 2; | |
277 | overridden = 1; | |
278 | } | |
279 | if (id->field_valid & 2) { /* drive implements ATA2? */ | |
2229833c | 280 | if (id->capability & 8) { /* IORDY supported? */ |
1da177e4 LT |
281 | if (id->eide_pio_modes & 7) { |
282 | overridden = 0; | |
283 | if (id->eide_pio_modes & 4) | |
284 | pio_mode = 5; | |
285 | else if (id->eide_pio_modes & 2) | |
286 | pio_mode = 4; | |
287 | else | |
288 | pio_mode = 3; | |
289 | } | |
1da177e4 LT |
290 | } |
291 | } | |
292 | ||
342cdb6d BZ |
293 | if (overridden) |
294 | printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n", | |
295 | drive->name); | |
296 | ||
1da177e4 LT |
297 | /* |
298 | * Conservative "downgrade" for all pre-ATA2 drives | |
299 | */ | |
6a824c92 BZ |
300 | if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 && |
301 | pio_mode && pio_mode < 4) { | |
1da177e4 | 302 | pio_mode--; |
342cdb6d BZ |
303 | printk(KERN_INFO "%s: applying conservative " |
304 | "PIO \"downgrade\"\n", drive->name); | |
1da177e4 LT |
305 | } |
306 | } | |
7dd00083 BZ |
307 | |
308 | if (pio_mode > max_mode) | |
1da177e4 | 309 | pio_mode = max_mode; |
7dd00083 | 310 | |
1da177e4 LT |
311 | return pio_mode; |
312 | } | |
313 | ||
314 | EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); | |
315 | ||
26bcb879 BZ |
316 | /* req_pio == "255" for auto-tune */ |
317 | void ide_set_pio(ide_drive_t *drive, u8 req_pio) | |
318 | { | |
319 | ide_hwif_t *hwif = drive->hwif; | |
320 | u8 host_pio, pio; | |
321 | ||
322 | if (hwif->set_pio_mode == NULL) | |
323 | return; | |
324 | ||
325 | BUG_ON(hwif->pio_mask == 0x00); | |
326 | ||
327 | host_pio = fls(hwif->pio_mask) - 1; | |
328 | ||
329 | pio = ide_get_best_pio_mode(drive, req_pio, host_pio); | |
330 | ||
331 | /* | |
332 | * TODO: | |
333 | * - report device max PIO mode | |
334 | * - check req_pio != 255 against device max PIO mode | |
335 | */ | |
336 | printk(KERN_DEBUG "%s: host max PIO%d wanted PIO%d%s selected PIO%d\n", | |
337 | drive->name, host_pio, req_pio, | |
338 | req_pio == 255 ? "(auto-tune)" : "", pio); | |
339 | ||
88b2b32b | 340 | (void)ide_set_pio_mode(drive, XFER_PIO_0 + pio); |
26bcb879 BZ |
341 | } |
342 | ||
343 | EXPORT_SYMBOL_GPL(ide_set_pio); | |
344 | ||
1da177e4 LT |
345 | /** |
346 | * ide_toggle_bounce - handle bounce buffering | |
347 | * @drive: drive to update | |
348 | * @on: on/off boolean | |
349 | * | |
350 | * Enable or disable bounce buffering for the device. Drives move | |
351 | * between PIO and DMA and that changes the rules we need. | |
352 | */ | |
353 | ||
354 | void ide_toggle_bounce(ide_drive_t *drive, int on) | |
355 | { | |
356 | u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ | |
357 | ||
6593178d JB |
358 | if (!PCI_DMA_BUS_IS_PHYS) { |
359 | addr = BLK_BOUNCE_ANY; | |
360 | } else if (on && drive->media == ide_disk) { | |
361 | if (HWIF(drive)->pci_dev) | |
1da177e4 LT |
362 | addr = HWIF(drive)->pci_dev->dma_mask; |
363 | } | |
364 | ||
365 | if (drive->queue) | |
366 | blk_queue_bounce_limit(drive->queue, addr); | |
367 | } | |
368 | ||
88b2b32b BZ |
369 | int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) |
370 | { | |
371 | ide_hwif_t *hwif = drive->hwif; | |
372 | ||
373 | if (hwif->set_pio_mode == NULL) | |
374 | return -1; | |
375 | ||
376 | /* | |
377 | * TODO: temporary hack for some legacy host drivers that didn't | |
378 | * set transfer mode on the device in ->set_pio_mode method... | |
379 | */ | |
380 | if (hwif->set_dma_mode == NULL) { | |
381 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { | |
386 | if (ide_config_drive_speed(drive, mode)) | |
387 | return -1; | |
388 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); | |
389 | return 0; | |
390 | } else { | |
391 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); | |
392 | return ide_config_drive_speed(drive, mode); | |
393 | } | |
394 | } | |
395 | ||
396 | int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) | |
397 | { | |
398 | ide_hwif_t *hwif = drive->hwif; | |
399 | ||
400 | if (hwif->set_dma_mode == NULL) | |
401 | return -1; | |
402 | ||
403 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { | |
404 | if (ide_config_drive_speed(drive, mode)) | |
405 | return -1; | |
406 | hwif->set_dma_mode(drive, mode); | |
407 | return 0; | |
408 | } else { | |
409 | hwif->set_dma_mode(drive, mode); | |
410 | return ide_config_drive_speed(drive, mode); | |
411 | } | |
412 | } | |
413 | ||
414 | EXPORT_SYMBOL_GPL(ide_set_dma_mode); | |
415 | ||
1da177e4 LT |
416 | /** |
417 | * ide_set_xfer_rate - set transfer rate | |
418 | * @drive: drive to set | |
88b2b32b | 419 | * @rate: speed to attempt to set |
1da177e4 LT |
420 | * |
421 | * General helper for setting the speed of an IDE device. This | |
422 | * function knows about user enforced limits from the configuration | |
88b2b32b | 423 | * which ->set_pio_mode/->set_dma_mode does not. |
1da177e4 | 424 | */ |
88b2b32b | 425 | |
1da177e4 LT |
426 | int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) |
427 | { | |
f212ff28 BZ |
428 | ide_hwif_t *hwif = drive->hwif; |
429 | ||
88b2b32b | 430 | if (hwif->set_dma_mode == NULL) |
1da177e4 | 431 | return -1; |
f212ff28 BZ |
432 | |
433 | rate = ide_rate_filter(drive, rate); | |
434 | ||
88b2b32b BZ |
435 | if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5) |
436 | return ide_set_pio_mode(drive, rate); | |
8f4dd2e4 | 437 | |
88b2b32b BZ |
438 | /* |
439 | * TODO: transfer modes 0x00-0x07 passed from the user-space are | |
440 | * currently handled here which needs fixing (please note that such | |
441 | * case could happen iff the transfer mode has already been set on | |
442 | * the device by ide-proc.c::set_xfer_rate()). | |
443 | */ | |
8f4dd2e4 | 444 | |
88b2b32b | 445 | return ide_set_dma_mode(drive, rate); |
1da177e4 LT |
446 | } |
447 | ||
1da177e4 LT |
448 | static void ide_dump_opcode(ide_drive_t *drive) |
449 | { | |
450 | struct request *rq; | |
451 | u8 opcode = 0; | |
452 | int found = 0; | |
453 | ||
454 | spin_lock(&ide_lock); | |
455 | rq = NULL; | |
456 | if (HWGROUP(drive)) | |
457 | rq = HWGROUP(drive)->rq; | |
458 | spin_unlock(&ide_lock); | |
459 | if (!rq) | |
460 | return; | |
29ed2a5f | 461 | if (rq->cmd_type == REQ_TYPE_ATA_CMD) { |
1da177e4 LT |
462 | char *args = rq->buffer; |
463 | if (args) { | |
464 | opcode = args[0]; | |
465 | found = 1; | |
466 | } | |
4aff5e23 | 467 | } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
1da177e4 LT |
468 | ide_task_t *args = rq->special; |
469 | if (args) { | |
650d841d | 470 | opcode = args->tf.command; |
1da177e4 LT |
471 | found = 1; |
472 | } | |
473 | } | |
474 | ||
475 | printk("ide: failed opcode was: "); | |
476 | if (!found) | |
477 | printk("unknown\n"); | |
478 | else | |
479 | printk("0x%02x\n", opcode); | |
480 | } | |
481 | ||
c2b57cdc BZ |
482 | static u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48) |
483 | { | |
484 | u32 high, low; | |
485 | ||
486 | if (lba48) | |
487 | high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | | |
488 | tf->hob_lbal; | |
489 | else | |
490 | high = tf->device & 0xf; | |
491 | low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; | |
492 | ||
493 | return ((u64)high << 24) | low; | |
494 | } | |
495 | ||
496 | static void ide_dump_sector(ide_drive_t *drive) | |
497 | { | |
498 | ide_task_t task; | |
499 | struct ide_taskfile *tf = &task.tf; | |
500 | int lba48 = (drive->addressing == 1) ? 1 : 0; | |
501 | ||
502 | memset(&task, 0, sizeof(task)); | |
503 | if (lba48) | |
504 | task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_HOB_LBA | | |
505 | IDE_TFLAG_LBA48; | |
506 | else | |
507 | task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_DEVICE; | |
508 | ||
509 | ide_tf_read(drive, &task); | |
510 | ||
511 | if (lba48 || (tf->device & ATA_LBA)) | |
1c904fcf AM |
512 | printk(", LBAsect=%llu", |
513 | (unsigned long long)ide_get_lba_addr(tf, lba48)); | |
c2b57cdc BZ |
514 | else |
515 | printk(", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, | |
516 | tf->device & 0xf, tf->lbal); | |
517 | } | |
518 | ||
1da177e4 LT |
519 | static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat) |
520 | { | |
521 | ide_hwif_t *hwif = HWIF(drive); | |
522 | unsigned long flags; | |
523 | u8 err = 0; | |
524 | ||
3d1c1cc9 | 525 | local_irq_save(flags); |
13bbbf28 | 526 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
1da177e4 LT |
527 | if (stat & BUSY_STAT) |
528 | printk("Busy "); | |
529 | else { | |
530 | if (stat & READY_STAT) printk("DriveReady "); | |
531 | if (stat & WRERR_STAT) printk("DeviceFault "); | |
532 | if (stat & SEEK_STAT) printk("SeekComplete "); | |
533 | if (stat & DRQ_STAT) printk("DataRequest "); | |
534 | if (stat & ECC_STAT) printk("CorrectedError "); | |
535 | if (stat & INDEX_STAT) printk("Index "); | |
536 | if (stat & ERR_STAT) printk("Error "); | |
537 | } | |
13bbbf28 | 538 | printk("}\n"); |
1da177e4 LT |
539 | if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { |
540 | err = hwif->INB(IDE_ERROR_REG); | |
13bbbf28 | 541 | printk("%s: %s: error=0x%02x { ", drive->name, msg, err); |
1da177e4 LT |
542 | if (err & ABRT_ERR) printk("DriveStatusError "); |
543 | if (err & ICRC_ERR) | |
13bbbf28 | 544 | printk((err & ABRT_ERR) ? "BadCRC " : "BadSector "); |
1da177e4 LT |
545 | if (err & ECC_ERR) printk("UncorrectableError "); |
546 | if (err & ID_ERR) printk("SectorIdNotFound "); | |
547 | if (err & TRK0_ERR) printk("TrackZeroNotFound "); | |
548 | if (err & MARK_ERR) printk("AddrMarkNotFound "); | |
549 | printk("}"); | |
550 | if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || | |
551 | (err & (ECC_ERR|ID_ERR|MARK_ERR))) { | |
c2b57cdc | 552 | ide_dump_sector(drive); |
1da177e4 LT |
553 | if (HWGROUP(drive) && HWGROUP(drive)->rq) |
554 | printk(", sector=%llu", | |
555 | (unsigned long long)HWGROUP(drive)->rq->sector); | |
556 | } | |
13bbbf28 | 557 | printk("\n"); |
1da177e4 | 558 | } |
1da177e4 LT |
559 | ide_dump_opcode(drive); |
560 | local_irq_restore(flags); | |
561 | return err; | |
562 | } | |
563 | ||
564 | /** | |
565 | * ide_dump_atapi_status - print human readable atapi status | |
566 | * @drive: drive that status applies to | |
567 | * @msg: text message to print | |
568 | * @stat: status byte to decode | |
569 | * | |
570 | * Error reporting, in human readable form (luxurious, but a memory hog). | |
571 | */ | |
572 | ||
573 | static u8 ide_dump_atapi_status(ide_drive_t *drive, const char *msg, u8 stat) | |
574 | { | |
575 | unsigned long flags; | |
0e38a66a | 576 | u8 err = 0; |
1da177e4 | 577 | |
3d1c1cc9 | 578 | local_irq_save(flags); |
1da177e4 | 579 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
22c525b9 | 580 | if (stat & BUSY_STAT) |
1da177e4 LT |
581 | printk("Busy "); |
582 | else { | |
22c525b9 BZ |
583 | if (stat & READY_STAT) printk("DriveReady "); |
584 | if (stat & WRERR_STAT) printk("DeviceFault "); | |
585 | if (stat & SEEK_STAT) printk("SeekComplete "); | |
586 | if (stat & DRQ_STAT) printk("DataRequest "); | |
587 | if (stat & ECC_STAT) printk("CorrectedError "); | |
588 | if (stat & INDEX_STAT) printk("Index "); | |
589 | if (stat & ERR_STAT) printk("Error "); | |
1da177e4 LT |
590 | } |
591 | printk("}\n"); | |
22c525b9 | 592 | if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { |
0e38a66a BZ |
593 | err = drive->hwif->INB(IDE_ERROR_REG); |
594 | printk("%s: %s: error=0x%02x { ", drive->name, msg, err); | |
595 | if (err & ILI_ERR) printk("IllegalLengthIndication "); | |
596 | if (err & EOM_ERR) printk("EndOfMedia "); | |
597 | if (err & ABRT_ERR) printk("AbortedCommand "); | |
598 | if (err & MCR_ERR) printk("MediaChangeRequested "); | |
599 | if (err & LFS_ERR) printk("LastFailedSense=0x%02x ", | |
600 | (err & LFS_ERR) >> 4); | |
1da177e4 LT |
601 | printk("}\n"); |
602 | } | |
603 | ide_dump_opcode(drive); | |
604 | local_irq_restore(flags); | |
0e38a66a | 605 | return err; |
1da177e4 LT |
606 | } |
607 | ||
608 | /** | |
609 | * ide_dump_status - translate ATA/ATAPI error | |
610 | * @drive: drive the error occured on | |
611 | * @msg: information string | |
612 | * @stat: status byte | |
613 | * | |
614 | * Error reporting, in human readable form (luxurious, but a memory hog). | |
615 | * Combines the drive name, message and status byte to provide a | |
616 | * user understandable explanation of the device error. | |
617 | */ | |
618 | ||
619 | u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) | |
620 | { | |
621 | if (drive->media == ide_disk) | |
622 | return ide_dump_ata_status(drive, msg, stat); | |
623 | return ide_dump_atapi_status(drive, msg, stat); | |
624 | } | |
625 | ||
626 | EXPORT_SYMBOL(ide_dump_status); |