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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 | */ | |
32 | ||
33 | ||
34 | /** | |
35 | * ide_xfer_verbose - return IDE mode names | |
36 | * @xfer_rate: rate to name | |
37 | * | |
38 | * Returns a constant string giving the name of the mode | |
39 | * requested. | |
40 | */ | |
41 | ||
42 | char *ide_xfer_verbose (u8 xfer_rate) | |
43 | { | |
44 | switch(xfer_rate) { | |
45 | case XFER_UDMA_7: return("UDMA 7"); | |
46 | case XFER_UDMA_6: return("UDMA 6"); | |
47 | case XFER_UDMA_5: return("UDMA 5"); | |
48 | case XFER_UDMA_4: return("UDMA 4"); | |
49 | case XFER_UDMA_3: return("UDMA 3"); | |
50 | case XFER_UDMA_2: return("UDMA 2"); | |
51 | case XFER_UDMA_1: return("UDMA 1"); | |
52 | case XFER_UDMA_0: return("UDMA 0"); | |
53 | case XFER_MW_DMA_2: return("MW DMA 2"); | |
54 | case XFER_MW_DMA_1: return("MW DMA 1"); | |
55 | case XFER_MW_DMA_0: return("MW DMA 0"); | |
56 | case XFER_SW_DMA_2: return("SW DMA 2"); | |
57 | case XFER_SW_DMA_1: return("SW DMA 1"); | |
58 | case XFER_SW_DMA_0: return("SW DMA 0"); | |
59 | case XFER_PIO_4: return("PIO 4"); | |
60 | case XFER_PIO_3: return("PIO 3"); | |
61 | case XFER_PIO_2: return("PIO 2"); | |
62 | case XFER_PIO_1: return("PIO 1"); | |
63 | case XFER_PIO_0: return("PIO 0"); | |
64 | case XFER_PIO_SLOW: return("PIO SLOW"); | |
65 | default: return("XFER ERROR"); | |
66 | } | |
67 | } | |
68 | ||
69 | EXPORT_SYMBOL(ide_xfer_verbose); | |
70 | ||
71 | /** | |
2d5eaa6d BZ |
72 | * ide_rate_filter - filter transfer mode |
73 | * @drive: IDE device | |
1da177e4 LT |
74 | * @speed: desired speed |
75 | * | |
2d5eaa6d | 76 | * Given the available transfer modes this function returns |
1da177e4 | 77 | * the best available speed at or below the speed requested. |
2d5eaa6d BZ |
78 | * |
79 | * FIXME: filter also PIO/SWDMA/MWDMA modes | |
1da177e4 LT |
80 | */ |
81 | ||
2d5eaa6d | 82 | u8 ide_rate_filter(ide_drive_t *drive, u8 speed) |
1da177e4 LT |
83 | { |
84 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
2d5eaa6d BZ |
85 | ide_hwif_t *hwif = drive->hwif; |
86 | u8 mask = hwif->ultra_mask, mode = XFER_MW_DMA_2; | |
87 | ||
88 | if (hwif->udma_filter) | |
89 | mask = hwif->udma_filter(drive); | |
90 | ||
7f8f48af BZ |
91 | /* |
92 | * TODO: speed > XFER_UDMA_2 extra check is needed to avoid false | |
93 | * cable warning from eighty_ninty_three(), moving ide_rate_filter() | |
94 | * calls from ->speedproc to core code will make this hack go away | |
95 | */ | |
96 | if (speed > XFER_UDMA_2) { | |
97 | if ((mask & 0x78) && (eighty_ninty_three(drive) == 0)) | |
98 | mask &= 0x07; | |
99 | } | |
2d5eaa6d BZ |
100 | |
101 | if (mask) | |
102 | mode = fls(mask) - 1 + XFER_UDMA_0; | |
1da177e4 LT |
103 | |
104 | // printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed); | |
105 | ||
2d5eaa6d | 106 | return min(speed, mode); |
1da177e4 LT |
107 | #else /* !CONFIG_BLK_DEV_IDEDMA */ |
108 | return min(speed, (u8)XFER_PIO_4); | |
109 | #endif /* CONFIG_BLK_DEV_IDEDMA */ | |
110 | } | |
111 | ||
112 | EXPORT_SYMBOL(ide_rate_filter); | |
113 | ||
7569e8dc BZ |
114 | int ide_use_fast_pio(ide_drive_t *drive) |
115 | { | |
116 | struct hd_driveid *id = drive->id; | |
117 | ||
118 | if ((id->capability & 1) && drive->autodma) | |
119 | return 1; | |
120 | ||
121 | if ((id->capability & 8) || (id->field_valid & 2)) | |
122 | return 1; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | EXPORT_SYMBOL_GPL(ide_use_fast_pio); | |
128 | ||
1da177e4 LT |
129 | /* |
130 | * Standard (generic) timings for PIO modes, from ATA2 specification. | |
131 | * These timings are for access to the IDE data port register *only*. | |
132 | * Some drives may specify a mode, while also specifying a different | |
133 | * value for cycle_time (from drive identification data). | |
134 | */ | |
135 | const ide_pio_timings_t ide_pio_timings[6] = { | |
136 | { 70, 165, 600 }, /* PIO Mode 0 */ | |
137 | { 50, 125, 383 }, /* PIO Mode 1 */ | |
138 | { 30, 100, 240 }, /* PIO Mode 2 */ | |
139 | { 30, 80, 180 }, /* PIO Mode 3 with IORDY */ | |
140 | { 25, 70, 120 }, /* PIO Mode 4 with IORDY */ | |
141 | { 20, 50, 100 } /* PIO Mode 5 with IORDY (nonstandard) */ | |
142 | }; | |
143 | ||
144 | EXPORT_SYMBOL_GPL(ide_pio_timings); | |
145 | ||
146 | /* | |
147 | * Shared data/functions for determining best PIO mode for an IDE drive. | |
148 | * Most of this stuff originally lived in cmd640.c, and changes to the | |
149 | * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid | |
150 | * breaking the fragile cmd640.c support. | |
151 | */ | |
152 | ||
153 | /* | |
154 | * Black list. Some drives incorrectly report their maximal PIO mode, | |
155 | * at least in respect to CMD640. Here we keep info on some known drives. | |
156 | */ | |
157 | static struct ide_pio_info { | |
158 | const char *name; | |
159 | int pio; | |
160 | } ide_pio_blacklist [] = { | |
161 | /* { "Conner Peripherals 1275MB - CFS1275A", 4 }, */ | |
162 | { "Conner Peripherals 540MB - CFS540A", 3 }, | |
163 | ||
164 | { "WDC AC2700", 3 }, | |
165 | { "WDC AC2540", 3 }, | |
166 | { "WDC AC2420", 3 }, | |
167 | { "WDC AC2340", 3 }, | |
168 | { "WDC AC2250", 0 }, | |
169 | { "WDC AC2200", 0 }, | |
170 | { "WDC AC21200", 4 }, | |
171 | { "WDC AC2120", 0 }, | |
172 | { "WDC AC2850", 3 }, | |
173 | { "WDC AC1270", 3 }, | |
174 | { "WDC AC1170", 1 }, | |
175 | { "WDC AC1210", 1 }, | |
176 | { "WDC AC280", 0 }, | |
177 | /* { "WDC AC21000", 4 }, */ | |
178 | { "WDC AC31000", 3 }, | |
179 | { "WDC AC31200", 3 }, | |
180 | /* { "WDC AC31600", 4 }, */ | |
181 | ||
182 | { "Maxtor 7131 AT", 1 }, | |
183 | { "Maxtor 7171 AT", 1 }, | |
184 | { "Maxtor 7213 AT", 1 }, | |
185 | { "Maxtor 7245 AT", 1 }, | |
186 | { "Maxtor 7345 AT", 1 }, | |
187 | { "Maxtor 7546 AT", 3 }, | |
188 | { "Maxtor 7540 AV", 3 }, | |
189 | ||
190 | { "SAMSUNG SHD-3121A", 1 }, | |
191 | { "SAMSUNG SHD-3122A", 1 }, | |
192 | { "SAMSUNG SHD-3172A", 1 }, | |
193 | ||
194 | /* { "ST51080A", 4 }, | |
195 | * { "ST51270A", 4 }, | |
196 | * { "ST31220A", 4 }, | |
197 | * { "ST31640A", 4 }, | |
198 | * { "ST32140A", 4 }, | |
199 | * { "ST3780A", 4 }, | |
200 | */ | |
201 | { "ST5660A", 3 }, | |
202 | { "ST3660A", 3 }, | |
203 | { "ST3630A", 3 }, | |
204 | { "ST3655A", 3 }, | |
205 | { "ST3391A", 3 }, | |
206 | { "ST3390A", 1 }, | |
207 | { "ST3600A", 1 }, | |
208 | { "ST3290A", 0 }, | |
209 | { "ST3144A", 0 }, | |
210 | { "ST3491A", 1 }, /* reports 3, should be 1 or 2 (depending on */ | |
211 | /* drive) according to Seagates FIND-ATA program */ | |
212 | ||
213 | { "QUANTUM ELS127A", 0 }, | |
214 | { "QUANTUM ELS170A", 0 }, | |
215 | { "QUANTUM LPS240A", 0 }, | |
216 | { "QUANTUM LPS210A", 3 }, | |
217 | { "QUANTUM LPS270A", 3 }, | |
218 | { "QUANTUM LPS365A", 3 }, | |
219 | { "QUANTUM LPS540A", 3 }, | |
220 | { "QUANTUM LIGHTNING 540A", 3 }, | |
221 | { "QUANTUM LIGHTNING 730A", 3 }, | |
222 | ||
223 | { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */ | |
224 | { "QUANTUM FIREBALL_640", 3 }, | |
225 | { "QUANTUM FIREBALL_1080", 3 }, | |
226 | { "QUANTUM FIREBALL_1280", 3 }, | |
227 | { NULL, 0 } | |
228 | }; | |
229 | ||
230 | /** | |
231 | * ide_scan_pio_blacklist - check for a blacklisted drive | |
232 | * @model: Drive model string | |
233 | * | |
234 | * This routine searches the ide_pio_blacklist for an entry | |
235 | * matching the start/whole of the supplied model name. | |
236 | * | |
237 | * Returns -1 if no match found. | |
238 | * Otherwise returns the recommended PIO mode from ide_pio_blacklist[]. | |
239 | */ | |
240 | ||
241 | static int ide_scan_pio_blacklist (char *model) | |
242 | { | |
243 | struct ide_pio_info *p; | |
244 | ||
245 | for (p = ide_pio_blacklist; p->name != NULL; p++) { | |
246 | if (strncmp(p->name, model, strlen(p->name)) == 0) | |
247 | return p->pio; | |
248 | } | |
249 | return -1; | |
250 | } | |
251 | ||
252 | /** | |
253 | * ide_get_best_pio_mode - get PIO mode from drive | |
81d368e0 | 254 | * @drive: drive to consider |
1da177e4 | 255 | * @mode_wanted: preferred mode |
81d368e0 SS |
256 | * @max_mode: highest allowed mode |
257 | * @d: PIO data | |
1da177e4 LT |
258 | * |
259 | * This routine returns the recommended PIO settings for a given drive, | |
260 | * based on the drive->id information and the ide_pio_blacklist[]. | |
1da177e4 | 261 | * |
81d368e0 SS |
262 | * Drive PIO mode is auto-selected if 255 is passed as mode_wanted. |
263 | * This is used by most chipset support modules when "auto-tuning". | |
1da177e4 LT |
264 | */ |
265 | ||
266 | u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d) | |
267 | { | |
268 | int pio_mode; | |
269 | int cycle_time = 0; | |
270 | int use_iordy = 0; | |
271 | struct hd_driveid* id = drive->id; | |
272 | int overridden = 0; | |
1da177e4 LT |
273 | |
274 | if (mode_wanted != 255) { | |
275 | pio_mode = mode_wanted; | |
81d368e0 | 276 | use_iordy = (pio_mode > 2); |
1da177e4 LT |
277 | } else if (!drive->id) { |
278 | pio_mode = 0; | |
279 | } else if ((pio_mode = ide_scan_pio_blacklist(id->model)) != -1) { | |
342cdb6d | 280 | printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); |
1da177e4 LT |
281 | use_iordy = (pio_mode > 2); |
282 | } else { | |
283 | pio_mode = id->tPIO; | |
284 | if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ | |
285 | pio_mode = 2; | |
286 | overridden = 1; | |
287 | } | |
288 | if (id->field_valid & 2) { /* drive implements ATA2? */ | |
289 | if (id->capability & 8) { /* drive supports use_iordy? */ | |
290 | use_iordy = 1; | |
291 | cycle_time = id->eide_pio_iordy; | |
292 | if (id->eide_pio_modes & 7) { | |
293 | overridden = 0; | |
294 | if (id->eide_pio_modes & 4) | |
295 | pio_mode = 5; | |
296 | else if (id->eide_pio_modes & 2) | |
297 | pio_mode = 4; | |
298 | else | |
299 | pio_mode = 3; | |
300 | } | |
301 | } else { | |
302 | cycle_time = id->eide_pio; | |
303 | } | |
304 | } | |
305 | ||
342cdb6d BZ |
306 | if (overridden) |
307 | printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n", | |
308 | drive->name); | |
309 | ||
1da177e4 LT |
310 | /* |
311 | * Conservative "downgrade" for all pre-ATA2 drives | |
312 | */ | |
313 | if (pio_mode && pio_mode < 4) { | |
314 | pio_mode--; | |
342cdb6d BZ |
315 | printk(KERN_INFO "%s: applying conservative " |
316 | "PIO \"downgrade\"\n", drive->name); | |
1da177e4 LT |
317 | if (cycle_time && cycle_time < ide_pio_timings[pio_mode].cycle_time) |
318 | cycle_time = 0; /* use standard timing */ | |
319 | } | |
320 | } | |
321 | if (pio_mode > max_mode) { | |
322 | pio_mode = max_mode; | |
323 | cycle_time = 0; | |
324 | } | |
325 | if (d) { | |
326 | d->pio_mode = pio_mode; | |
327 | d->cycle_time = cycle_time ? cycle_time : ide_pio_timings[pio_mode].cycle_time; | |
328 | d->use_iordy = use_iordy; | |
1da177e4 LT |
329 | } |
330 | return pio_mode; | |
331 | } | |
332 | ||
333 | EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); | |
334 | ||
335 | /** | |
336 | * ide_toggle_bounce - handle bounce buffering | |
337 | * @drive: drive to update | |
338 | * @on: on/off boolean | |
339 | * | |
340 | * Enable or disable bounce buffering for the device. Drives move | |
341 | * between PIO and DMA and that changes the rules we need. | |
342 | */ | |
343 | ||
344 | void ide_toggle_bounce(ide_drive_t *drive, int on) | |
345 | { | |
346 | u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ | |
347 | ||
6593178d JB |
348 | if (!PCI_DMA_BUS_IS_PHYS) { |
349 | addr = BLK_BOUNCE_ANY; | |
350 | } else if (on && drive->media == ide_disk) { | |
351 | if (HWIF(drive)->pci_dev) | |
1da177e4 LT |
352 | addr = HWIF(drive)->pci_dev->dma_mask; |
353 | } | |
354 | ||
355 | if (drive->queue) | |
356 | blk_queue_bounce_limit(drive->queue, addr); | |
357 | } | |
358 | ||
359 | /** | |
360 | * ide_set_xfer_rate - set transfer rate | |
361 | * @drive: drive to set | |
362 | * @speed: speed to attempt to set | |
363 | * | |
364 | * General helper for setting the speed of an IDE device. This | |
365 | * function knows about user enforced limits from the configuration | |
366 | * which speedproc() does not. High level drivers should never | |
367 | * invoke speedproc() directly. | |
368 | */ | |
369 | ||
370 | int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) | |
371 | { | |
372 | #ifndef CONFIG_BLK_DEV_IDEDMA | |
373 | rate = min(rate, (u8) XFER_PIO_4); | |
374 | #endif | |
375 | if(HWIF(drive)->speedproc) | |
376 | return HWIF(drive)->speedproc(drive, rate); | |
377 | else | |
378 | return -1; | |
379 | } | |
380 | ||
1da177e4 LT |
381 | static void ide_dump_opcode(ide_drive_t *drive) |
382 | { | |
383 | struct request *rq; | |
384 | u8 opcode = 0; | |
385 | int found = 0; | |
386 | ||
387 | spin_lock(&ide_lock); | |
388 | rq = NULL; | |
389 | if (HWGROUP(drive)) | |
390 | rq = HWGROUP(drive)->rq; | |
391 | spin_unlock(&ide_lock); | |
392 | if (!rq) | |
393 | return; | |
4aff5e23 JA |
394 | if (rq->cmd_type == REQ_TYPE_ATA_CMD || |
395 | rq->cmd_type == REQ_TYPE_ATA_TASK) { | |
1da177e4 LT |
396 | char *args = rq->buffer; |
397 | if (args) { | |
398 | opcode = args[0]; | |
399 | found = 1; | |
400 | } | |
4aff5e23 | 401 | } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
1da177e4 LT |
402 | ide_task_t *args = rq->special; |
403 | if (args) { | |
404 | task_struct_t *tf = (task_struct_t *) args->tfRegister; | |
405 | opcode = tf->command; | |
406 | found = 1; | |
407 | } | |
408 | } | |
409 | ||
410 | printk("ide: failed opcode was: "); | |
411 | if (!found) | |
412 | printk("unknown\n"); | |
413 | else | |
414 | printk("0x%02x\n", opcode); | |
415 | } | |
416 | ||
417 | static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat) | |
418 | { | |
419 | ide_hwif_t *hwif = HWIF(drive); | |
420 | unsigned long flags; | |
421 | u8 err = 0; | |
422 | ||
3d1c1cc9 | 423 | local_irq_save(flags); |
13bbbf28 | 424 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
1da177e4 LT |
425 | if (stat & BUSY_STAT) |
426 | printk("Busy "); | |
427 | else { | |
428 | if (stat & READY_STAT) printk("DriveReady "); | |
429 | if (stat & WRERR_STAT) printk("DeviceFault "); | |
430 | if (stat & SEEK_STAT) printk("SeekComplete "); | |
431 | if (stat & DRQ_STAT) printk("DataRequest "); | |
432 | if (stat & ECC_STAT) printk("CorrectedError "); | |
433 | if (stat & INDEX_STAT) printk("Index "); | |
434 | if (stat & ERR_STAT) printk("Error "); | |
435 | } | |
13bbbf28 | 436 | printk("}\n"); |
1da177e4 LT |
437 | if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { |
438 | err = hwif->INB(IDE_ERROR_REG); | |
13bbbf28 | 439 | printk("%s: %s: error=0x%02x { ", drive->name, msg, err); |
1da177e4 LT |
440 | if (err & ABRT_ERR) printk("DriveStatusError "); |
441 | if (err & ICRC_ERR) | |
13bbbf28 | 442 | printk((err & ABRT_ERR) ? "BadCRC " : "BadSector "); |
1da177e4 LT |
443 | if (err & ECC_ERR) printk("UncorrectableError "); |
444 | if (err & ID_ERR) printk("SectorIdNotFound "); | |
445 | if (err & TRK0_ERR) printk("TrackZeroNotFound "); | |
446 | if (err & MARK_ERR) printk("AddrMarkNotFound "); | |
447 | printk("}"); | |
448 | if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || | |
449 | (err & (ECC_ERR|ID_ERR|MARK_ERR))) { | |
450 | if (drive->addressing == 1) { | |
451 | __u64 sectors = 0; | |
452 | u32 low = 0, high = 0; | |
453 | low = ide_read_24(drive); | |
454 | hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); | |
455 | high = ide_read_24(drive); | |
456 | sectors = ((__u64)high << 24) | low; | |
457 | printk(", LBAsect=%llu, high=%d, low=%d", | |
458 | (unsigned long long) sectors, | |
459 | high, low); | |
460 | } else { | |
461 | u8 cur = hwif->INB(IDE_SELECT_REG); | |
462 | if (cur & 0x40) { /* using LBA? */ | |
463 | printk(", LBAsect=%ld", (unsigned long) | |
464 | ((cur&0xf)<<24) | |
465 | |(hwif->INB(IDE_HCYL_REG)<<16) | |
466 | |(hwif->INB(IDE_LCYL_REG)<<8) | |
467 | | hwif->INB(IDE_SECTOR_REG)); | |
468 | } else { | |
469 | printk(", CHS=%d/%d/%d", | |
470 | (hwif->INB(IDE_HCYL_REG)<<8) + | |
471 | hwif->INB(IDE_LCYL_REG), | |
472 | cur & 0xf, | |
473 | hwif->INB(IDE_SECTOR_REG)); | |
474 | } | |
475 | } | |
476 | if (HWGROUP(drive) && HWGROUP(drive)->rq) | |
477 | printk(", sector=%llu", | |
478 | (unsigned long long)HWGROUP(drive)->rq->sector); | |
479 | } | |
13bbbf28 | 480 | printk("\n"); |
1da177e4 | 481 | } |
1da177e4 LT |
482 | ide_dump_opcode(drive); |
483 | local_irq_restore(flags); | |
484 | return err; | |
485 | } | |
486 | ||
487 | /** | |
488 | * ide_dump_atapi_status - print human readable atapi status | |
489 | * @drive: drive that status applies to | |
490 | * @msg: text message to print | |
491 | * @stat: status byte to decode | |
492 | * | |
493 | * Error reporting, in human readable form (luxurious, but a memory hog). | |
494 | */ | |
495 | ||
496 | static u8 ide_dump_atapi_status(ide_drive_t *drive, const char *msg, u8 stat) | |
497 | { | |
498 | unsigned long flags; | |
499 | ||
500 | atapi_status_t status; | |
501 | atapi_error_t error; | |
502 | ||
503 | status.all = stat; | |
504 | error.all = 0; | |
3d1c1cc9 | 505 | local_irq_save(flags); |
1da177e4 LT |
506 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
507 | if (status.b.bsy) | |
508 | printk("Busy "); | |
509 | else { | |
510 | if (status.b.drdy) printk("DriveReady "); | |
511 | if (status.b.df) printk("DeviceFault "); | |
512 | if (status.b.dsc) printk("SeekComplete "); | |
513 | if (status.b.drq) printk("DataRequest "); | |
514 | if (status.b.corr) printk("CorrectedError "); | |
515 | if (status.b.idx) printk("Index "); | |
516 | if (status.b.check) printk("Error "); | |
517 | } | |
518 | printk("}\n"); | |
519 | if (status.b.check && !status.b.bsy) { | |
520 | error.all = HWIF(drive)->INB(IDE_ERROR_REG); | |
521 | printk("%s: %s: error=0x%02x { ", drive->name, msg, error.all); | |
522 | if (error.b.ili) printk("IllegalLengthIndication "); | |
523 | if (error.b.eom) printk("EndOfMedia "); | |
524 | if (error.b.abrt) printk("AbortedCommand "); | |
525 | if (error.b.mcr) printk("MediaChangeRequested "); | |
526 | if (error.b.sense_key) printk("LastFailedSense=0x%02x ", | |
527 | error.b.sense_key); | |
528 | printk("}\n"); | |
529 | } | |
530 | ide_dump_opcode(drive); | |
531 | local_irq_restore(flags); | |
532 | return error.all; | |
533 | } | |
534 | ||
535 | /** | |
536 | * ide_dump_status - translate ATA/ATAPI error | |
537 | * @drive: drive the error occured on | |
538 | * @msg: information string | |
539 | * @stat: status byte | |
540 | * | |
541 | * Error reporting, in human readable form (luxurious, but a memory hog). | |
542 | * Combines the drive name, message and status byte to provide a | |
543 | * user understandable explanation of the device error. | |
544 | */ | |
545 | ||
546 | u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) | |
547 | { | |
548 | if (drive->media == ide_disk) | |
549 | return ide_dump_ata_status(drive, msg, stat); | |
550 | return ide_dump_atapi_status(drive, msg, stat); | |
551 | } | |
552 | ||
553 | EXPORT_SYMBOL(ide_dump_status); |