Commit | Line | Data |
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1da177e4 LT |
1 | #include <linux/types.h> |
2 | #include <linux/string.h> | |
3 | #include <linux/kernel.h> | |
1da177e4 | 4 | #include <linux/interrupt.h> |
1da177e4 LT |
5 | #include <linux/ide.h> |
6 | #include <linux/bitops.h> | |
7 | ||
3ab7efe8 BZ |
8 | static const char *udma_str[] = |
9 | { "UDMA/16", "UDMA/25", "UDMA/33", "UDMA/44", | |
10 | "UDMA/66", "UDMA/100", "UDMA/133", "UDMA7" }; | |
11 | static const char *mwdma_str[] = | |
12 | { "MWDMA0", "MWDMA1", "MWDMA2" }; | |
13 | static const char *swdma_str[] = | |
14 | { "SWDMA0", "SWDMA1", "SWDMA2" }; | |
15 | static const char *pio_str[] = | |
16 | { "PIO0", "PIO1", "PIO2", "PIO3", "PIO4", "PIO5" }; | |
1da177e4 LT |
17 | |
18 | /** | |
19 | * ide_xfer_verbose - return IDE mode names | |
3ab7efe8 | 20 | * @mode: transfer mode |
1da177e4 LT |
21 | * |
22 | * Returns a constant string giving the name of the mode | |
23 | * requested. | |
24 | */ | |
25 | ||
3ab7efe8 | 26 | const char *ide_xfer_verbose(u8 mode) |
1da177e4 | 27 | { |
3ab7efe8 BZ |
28 | const char *s; |
29 | u8 i = mode & 0xf; | |
30 | ||
31 | if (mode >= XFER_UDMA_0 && mode <= XFER_UDMA_7) | |
32 | s = udma_str[i]; | |
33 | else if (mode >= XFER_MW_DMA_0 && mode <= XFER_MW_DMA_2) | |
34 | s = mwdma_str[i]; | |
35 | else if (mode >= XFER_SW_DMA_0 && mode <= XFER_SW_DMA_2) | |
36 | s = swdma_str[i]; | |
37 | else if (mode >= XFER_PIO_0 && mode <= XFER_PIO_5) | |
38 | s = pio_str[i & 0x7]; | |
39 | else if (mode == XFER_PIO_SLOW) | |
40 | s = "PIO SLOW"; | |
41 | else | |
42 | s = "XFER ERROR"; | |
43 | ||
44 | return s; | |
1da177e4 | 45 | } |
1da177e4 LT |
46 | EXPORT_SYMBOL(ide_xfer_verbose); |
47 | ||
48 | /** | |
2d5eaa6d BZ |
49 | * ide_rate_filter - filter transfer mode |
50 | * @drive: IDE device | |
1da177e4 LT |
51 | * @speed: desired speed |
52 | * | |
2d5eaa6d | 53 | * Given the available transfer modes this function returns |
1da177e4 | 54 | * the best available speed at or below the speed requested. |
2d5eaa6d | 55 | * |
7670df73 | 56 | * TODO: check device PIO capabilities |
1da177e4 LT |
57 | */ |
58 | ||
f212ff28 | 59 | static u8 ide_rate_filter(ide_drive_t *drive, u8 speed) |
1da177e4 | 60 | { |
2d5eaa6d | 61 | ide_hwif_t *hwif = drive->hwif; |
7670df73 | 62 | u8 mode = ide_find_dma_mode(drive, speed); |
2d5eaa6d | 63 | |
7670df73 BZ |
64 | if (mode == 0) { |
65 | if (hwif->pio_mask) | |
66 | mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0; | |
67 | else | |
68 | mode = XFER_PIO_4; | |
69 | } | |
1da177e4 | 70 | |
eb63963a | 71 | /* printk("%s: mode 0x%02x, speed 0x%02x\n", __func__, mode, speed); */ |
1da177e4 | 72 | |
2d5eaa6d | 73 | return min(speed, mode); |
1da177e4 LT |
74 | } |
75 | ||
1da177e4 LT |
76 | /** |
77 | * ide_get_best_pio_mode - get PIO mode from drive | |
81d368e0 | 78 | * @drive: drive to consider |
1da177e4 | 79 | * @mode_wanted: preferred mode |
81d368e0 | 80 | * @max_mode: highest allowed mode |
1da177e4 LT |
81 | * |
82 | * This routine returns the recommended PIO settings for a given drive, | |
83 | * based on the drive->id information and the ide_pio_blacklist[]. | |
1da177e4 | 84 | * |
81d368e0 SS |
85 | * Drive PIO mode is auto-selected if 255 is passed as mode_wanted. |
86 | * This is used by most chipset support modules when "auto-tuning". | |
1da177e4 LT |
87 | */ |
88 | ||
2f996acb | 89 | u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode) |
1da177e4 | 90 | { |
4dde4492 BZ |
91 | u16 *id = drive->id; |
92 | int pio_mode = -1, overridden = 0; | |
1da177e4 | 93 | |
6a824c92 BZ |
94 | if (mode_wanted != 255) |
95 | return min_t(u8, mode_wanted, max_mode); | |
96 | ||
4dde4492 BZ |
97 | if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0) |
98 | pio_mode = ide_scan_pio_blacklist((char *)&id[ATA_ID_PROD]); | |
99 | ||
100 | if (pio_mode != -1) { | |
342cdb6d | 101 | printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); |
1da177e4 | 102 | } else { |
48fb2688 | 103 | pio_mode = id[ATA_ID_OLD_PIO_MODES] >> 8; |
1da177e4 LT |
104 | if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ |
105 | pio_mode = 2; | |
106 | overridden = 1; | |
107 | } | |
4dde4492 BZ |
108 | |
109 | if (id[ATA_ID_FIELD_VALID] & 2) { /* ATA2? */ | |
48fb2688 | 110 | if (ata_id_has_iordy(id)) { |
4dde4492 | 111 | if (id[ATA_ID_PIO_MODES] & 7) { |
1da177e4 | 112 | overridden = 0; |
4dde4492 | 113 | if (id[ATA_ID_PIO_MODES] & 4) |
1da177e4 | 114 | pio_mode = 5; |
4dde4492 | 115 | else if (id[ATA_ID_PIO_MODES] & 2) |
1da177e4 LT |
116 | pio_mode = 4; |
117 | else | |
118 | pio_mode = 3; | |
119 | } | |
1da177e4 LT |
120 | } |
121 | } | |
122 | ||
342cdb6d BZ |
123 | if (overridden) |
124 | printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n", | |
125 | drive->name); | |
1da177e4 | 126 | } |
7dd00083 BZ |
127 | |
128 | if (pio_mode > max_mode) | |
1da177e4 | 129 | pio_mode = max_mode; |
7dd00083 | 130 | |
1da177e4 LT |
131 | return pio_mode; |
132 | } | |
1da177e4 LT |
133 | EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); |
134 | ||
26bcb879 BZ |
135 | /* req_pio == "255" for auto-tune */ |
136 | void ide_set_pio(ide_drive_t *drive, u8 req_pio) | |
137 | { | |
138 | ide_hwif_t *hwif = drive->hwif; | |
ac95beed | 139 | const struct ide_port_ops *port_ops = hwif->port_ops; |
26bcb879 BZ |
140 | u8 host_pio, pio; |
141 | ||
ac95beed | 142 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 143 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
26bcb879 BZ |
144 | return; |
145 | ||
146 | BUG_ON(hwif->pio_mask == 0x00); | |
147 | ||
148 | host_pio = fls(hwif->pio_mask) - 1; | |
149 | ||
150 | pio = ide_get_best_pio_mode(drive, req_pio, host_pio); | |
151 | ||
152 | /* | |
153 | * TODO: | |
154 | * - report device max PIO mode | |
155 | * - check req_pio != 255 against device max PIO mode | |
156 | */ | |
157 | printk(KERN_DEBUG "%s: host max PIO%d wanted PIO%d%s selected PIO%d\n", | |
158 | drive->name, host_pio, req_pio, | |
159 | req_pio == 255 ? "(auto-tune)" : "", pio); | |
160 | ||
88b2b32b | 161 | (void)ide_set_pio_mode(drive, XFER_PIO_0 + pio); |
26bcb879 | 162 | } |
26bcb879 BZ |
163 | EXPORT_SYMBOL_GPL(ide_set_pio); |
164 | ||
1da177e4 LT |
165 | /** |
166 | * ide_toggle_bounce - handle bounce buffering | |
167 | * @drive: drive to update | |
168 | * @on: on/off boolean | |
169 | * | |
170 | * Enable or disable bounce buffering for the device. Drives move | |
171 | * between PIO and DMA and that changes the rules we need. | |
172 | */ | |
2f996acb | 173 | |
1da177e4 LT |
174 | void ide_toggle_bounce(ide_drive_t *drive, int on) |
175 | { | |
176 | u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ | |
177 | ||
6593178d JB |
178 | if (!PCI_DMA_BUS_IS_PHYS) { |
179 | addr = BLK_BOUNCE_ANY; | |
180 | } else if (on && drive->media == ide_disk) { | |
36501650 BZ |
181 | struct device *dev = drive->hwif->dev; |
182 | ||
183 | if (dev && dev->dma_mask) | |
184 | addr = *dev->dma_mask; | |
1da177e4 LT |
185 | } |
186 | ||
187 | if (drive->queue) | |
188 | blk_queue_bounce_limit(drive->queue, addr); | |
189 | } | |
190 | ||
88b2b32b BZ |
191 | int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) |
192 | { | |
193 | ide_hwif_t *hwif = drive->hwif; | |
ac95beed | 194 | const struct ide_port_ops *port_ops = hwif->port_ops; |
88b2b32b | 195 | |
784506cb BZ |
196 | if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE) |
197 | return 0; | |
198 | ||
ac95beed | 199 | if (port_ops == NULL || port_ops->set_pio_mode == NULL) |
88b2b32b BZ |
200 | return -1; |
201 | ||
202 | /* | |
203 | * TODO: temporary hack for some legacy host drivers that didn't | |
204 | * set transfer mode on the device in ->set_pio_mode method... | |
205 | */ | |
ac95beed BZ |
206 | if (port_ops->set_dma_mode == NULL) { |
207 | port_ops->set_pio_mode(drive, mode - XFER_PIO_0); | |
88b2b32b BZ |
208 | return 0; |
209 | } | |
210 | ||
211 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { | |
212 | if (ide_config_drive_speed(drive, mode)) | |
213 | return -1; | |
ac95beed | 214 | port_ops->set_pio_mode(drive, mode - XFER_PIO_0); |
88b2b32b BZ |
215 | return 0; |
216 | } else { | |
ac95beed | 217 | port_ops->set_pio_mode(drive, mode - XFER_PIO_0); |
88b2b32b BZ |
218 | return ide_config_drive_speed(drive, mode); |
219 | } | |
220 | } | |
221 | ||
222 | int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) | |
223 | { | |
224 | ide_hwif_t *hwif = drive->hwif; | |
ac95beed | 225 | const struct ide_port_ops *port_ops = hwif->port_ops; |
88b2b32b | 226 | |
784506cb BZ |
227 | if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE) |
228 | return 0; | |
229 | ||
ac95beed | 230 | if (port_ops == NULL || port_ops->set_dma_mode == NULL) |
88b2b32b BZ |
231 | return -1; |
232 | ||
233 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { | |
234 | if (ide_config_drive_speed(drive, mode)) | |
235 | return -1; | |
ac95beed | 236 | port_ops->set_dma_mode(drive, mode); |
88b2b32b BZ |
237 | return 0; |
238 | } else { | |
ac95beed | 239 | port_ops->set_dma_mode(drive, mode); |
88b2b32b BZ |
240 | return ide_config_drive_speed(drive, mode); |
241 | } | |
242 | } | |
88b2b32b BZ |
243 | EXPORT_SYMBOL_GPL(ide_set_dma_mode); |
244 | ||
1da177e4 LT |
245 | /** |
246 | * ide_set_xfer_rate - set transfer rate | |
247 | * @drive: drive to set | |
88b2b32b | 248 | * @rate: speed to attempt to set |
2f996acb | 249 | * |
1da177e4 LT |
250 | * General helper for setting the speed of an IDE device. This |
251 | * function knows about user enforced limits from the configuration | |
88b2b32b | 252 | * which ->set_pio_mode/->set_dma_mode does not. |
1da177e4 | 253 | */ |
88b2b32b | 254 | |
1da177e4 LT |
255 | int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) |
256 | { | |
f212ff28 | 257 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 258 | const struct ide_port_ops *port_ops = hwif->port_ops; |
f212ff28 | 259 | |
ac95beed | 260 | if (port_ops == NULL || port_ops->set_dma_mode == NULL || |
784506cb | 261 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 262 | return -1; |
f212ff28 BZ |
263 | |
264 | rate = ide_rate_filter(drive, rate); | |
265 | ||
3b2a5c71 BZ |
266 | BUG_ON(rate < XFER_PIO_0); |
267 | ||
88b2b32b BZ |
268 | if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5) |
269 | return ide_set_pio_mode(drive, rate); | |
8f4dd2e4 | 270 | |
88b2b32b | 271 | return ide_set_dma_mode(drive, rate); |
1da177e4 LT |
272 | } |
273 | ||
1da177e4 LT |
274 | static void ide_dump_opcode(ide_drive_t *drive) |
275 | { | |
1d0bf587 | 276 | struct request *rq = drive->hwif->hwgroup->rq; |
7267c337 | 277 | ide_task_t *task = NULL; |
1da177e4 | 278 | |
1da177e4 LT |
279 | if (!rq) |
280 | return; | |
7267c337 BZ |
281 | |
282 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) | |
283 | task = rq->special; | |
1da177e4 | 284 | |
2f996acb | 285 | printk(KERN_ERR "ide: failed opcode was: "); |
7267c337 BZ |
286 | if (task == NULL) |
287 | printk(KERN_CONT "unknown\n"); | |
1da177e4 | 288 | else |
7267c337 | 289 | printk(KERN_CONT "0x%02x\n", task->tf.command); |
1da177e4 LT |
290 | } |
291 | ||
a501633c | 292 | u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48) |
c2b57cdc BZ |
293 | { |
294 | u32 high, low; | |
295 | ||
296 | if (lba48) | |
297 | high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | | |
298 | tf->hob_lbal; | |
299 | else | |
300 | high = tf->device & 0xf; | |
301 | low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; | |
302 | ||
303 | return ((u64)high << 24) | low; | |
304 | } | |
a501633c | 305 | EXPORT_SYMBOL_GPL(ide_get_lba_addr); |
c2b57cdc BZ |
306 | |
307 | static void ide_dump_sector(ide_drive_t *drive) | |
308 | { | |
309 | ide_task_t task; | |
310 | struct ide_taskfile *tf = &task.tf; | |
97100fc8 | 311 | u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); |
c2b57cdc BZ |
312 | |
313 | memset(&task, 0, sizeof(task)); | |
314 | if (lba48) | |
315 | task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_HOB_LBA | | |
316 | IDE_TFLAG_LBA48; | |
317 | else | |
318 | task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_DEVICE; | |
319 | ||
374e042c | 320 | drive->hwif->tp_ops->tf_read(drive, &task); |
c2b57cdc BZ |
321 | |
322 | if (lba48 || (tf->device & ATA_LBA)) | |
2f996acb | 323 | printk(KERN_CONT ", LBAsect=%llu", |
1c904fcf | 324 | (unsigned long long)ide_get_lba_addr(tf, lba48)); |
c2b57cdc | 325 | else |
2f996acb BZ |
326 | printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, |
327 | tf->device & 0xf, tf->lbal); | |
c2b57cdc BZ |
328 | } |
329 | ||
e62925dd | 330 | static void ide_dump_ata_error(ide_drive_t *drive, u8 err) |
1da177e4 | 331 | { |
2f996acb BZ |
332 | printk(KERN_ERR "{ "); |
333 | if (err & ATA_ABORTED) | |
334 | printk(KERN_CONT "DriveStatusError "); | |
3a7d2484 | 335 | if (err & ATA_ICRC) |
2f996acb BZ |
336 | printk(KERN_CONT "%s", |
337 | (err & ATA_ABORTED) ? "BadCRC " : "BadSector "); | |
338 | if (err & ATA_UNC) | |
339 | printk(KERN_CONT "UncorrectableError "); | |
340 | if (err & ATA_IDNF) | |
341 | printk(KERN_CONT "SectorIdNotFound "); | |
342 | if (err & ATA_TRK0NF) | |
343 | printk(KERN_CONT "TrackZeroNotFound "); | |
344 | if (err & ATA_AMNF) | |
345 | printk(KERN_CONT "AddrMarkNotFound "); | |
346 | printk(KERN_CONT "}"); | |
3a7d2484 BZ |
347 | if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK || |
348 | (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) { | |
e62925dd BZ |
349 | ide_dump_sector(drive); |
350 | if (HWGROUP(drive) && HWGROUP(drive)->rq) | |
2f996acb | 351 | printk(KERN_CONT ", sector=%llu", |
e62925dd | 352 | (unsigned long long)HWGROUP(drive)->rq->sector); |
1da177e4 | 353 | } |
2f996acb | 354 | printk(KERN_CONT "\n"); |
e62925dd BZ |
355 | } |
356 | ||
357 | static void ide_dump_atapi_error(ide_drive_t *drive, u8 err) | |
358 | { | |
2f996acb BZ |
359 | printk(KERN_ERR "{ "); |
360 | if (err & ATAPI_ILI) | |
361 | printk(KERN_CONT "IllegalLengthIndication "); | |
362 | if (err & ATAPI_EOM) | |
363 | printk(KERN_CONT "EndOfMedia "); | |
364 | if (err & ATA_ABORTED) | |
365 | printk(KERN_CONT "AbortedCommand "); | |
366 | if (err & ATA_MCR) | |
367 | printk(KERN_CONT "MediaChangeRequested "); | |
368 | if (err & ATAPI_LFS) | |
369 | printk(KERN_CONT "LastFailedSense=0x%02x ", | |
370 | (err & ATAPI_LFS) >> 4); | |
371 | printk(KERN_CONT "}\n"); | |
1da177e4 LT |
372 | } |
373 | ||
374 | /** | |
e62925dd | 375 | * ide_dump_status - translate ATA/ATAPI error |
1da177e4 LT |
376 | * @drive: drive that status applies to |
377 | * @msg: text message to print | |
378 | * @stat: status byte to decode | |
379 | * | |
380 | * Error reporting, in human readable form (luxurious, but a memory hog). | |
e62925dd BZ |
381 | * Combines the drive name, message and status byte to provide a |
382 | * user understandable explanation of the device error. | |
1da177e4 LT |
383 | */ |
384 | ||
e62925dd | 385 | u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) |
1da177e4 | 386 | { |
0e38a66a | 387 | u8 err = 0; |
1da177e4 | 388 | |
2f996acb | 389 | printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat); |
3a7d2484 | 390 | if (stat & ATA_BUSY) |
2f996acb | 391 | printk(KERN_CONT "Busy "); |
1da177e4 | 392 | else { |
2f996acb BZ |
393 | if (stat & ATA_DRDY) |
394 | printk(KERN_CONT "DriveReady "); | |
395 | if (stat & ATA_DF) | |
396 | printk(KERN_CONT "DeviceFault "); | |
397 | if (stat & ATA_DSC) | |
398 | printk(KERN_CONT "SeekComplete "); | |
399 | if (stat & ATA_DRQ) | |
400 | printk(KERN_CONT "DataRequest "); | |
401 | if (stat & ATA_CORR) | |
402 | printk(KERN_CONT "CorrectedError "); | |
403 | if (stat & ATA_IDX) | |
404 | printk(KERN_CONT "Index "); | |
405 | if (stat & ATA_ERR) | |
406 | printk(KERN_CONT "Error "); | |
1da177e4 | 407 | } |
2f996acb | 408 | printk(KERN_CONT "}\n"); |
3a7d2484 | 409 | if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) { |
64a57fe4 | 410 | err = ide_read_error(drive); |
2f996acb | 411 | printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err); |
e62925dd BZ |
412 | if (drive->media == ide_disk) |
413 | ide_dump_ata_error(drive, err); | |
414 | else | |
415 | ide_dump_atapi_error(drive, err); | |
1da177e4 LT |
416 | } |
417 | ide_dump_opcode(drive); | |
0e38a66a | 418 | return err; |
1da177e4 | 419 | } |
1da177e4 | 420 | EXPORT_SYMBOL(ide_dump_status); |