blob: 062d3bcb2471c4a3cd4a9a9c2ed17a5557a9ea39 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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 */
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +010032
33static const char *udma_str[] =
34 { "UDMA/16", "UDMA/25", "UDMA/33", "UDMA/44",
35 "UDMA/66", "UDMA/100", "UDMA/133", "UDMA7" };
36static const char *mwdma_str[] =
37 { "MWDMA0", "MWDMA1", "MWDMA2" };
38static const char *swdma_str[] =
39 { "SWDMA0", "SWDMA1", "SWDMA2" };
40static const char *pio_str[] =
41 { "PIO0", "PIO1", "PIO2", "PIO3", "PIO4", "PIO5" };
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43/**
44 * ide_xfer_verbose - return IDE mode names
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +010045 * @mode: transfer mode
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 *
47 * Returns a constant string giving the name of the mode
48 * requested.
49 */
50
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +010051const char *ide_xfer_verbose(u8 mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052{
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +010053 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070070}
71
72EXPORT_SYMBOL(ide_xfer_verbose);
73
74/**
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020075 * ide_rate_filter - filter transfer mode
76 * @drive: IDE device
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 * @speed: desired speed
78 *
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020079 * Given the available transfer modes this function returns
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 * the best available speed at or below the speed requested.
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020081 *
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +020082 * TODO: check device PIO capabilities
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 */
84
Bartlomiej Zolnierkiewiczf212ff22007-10-11 23:53:59 +020085static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086{
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020087 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +020088 u8 mode = ide_find_dma_mode(drive, speed);
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020089
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +020090 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;
Bartlomiej Zolnierkiewicz7f8f48a2007-05-10 00:01:10 +020095 }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020096
Linus Torvalds1da177e2005-04-16 15:20:36 -070097// printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed);
98
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +020099 return min(speed, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100}
101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102/*
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 */
108const 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
117EXPORT_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 */
130static 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
214static 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
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200225unsigned 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
246EXPORT_SYMBOL_GPL(ide_pio_cycle_time);
247
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248/**
249 * ide_get_best_pio_mode - get PIO mode from drive
Sergei Shtylyov81d368e2007-03-03 17:48:53 +0100250 * @drive: drive to consider
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 * @mode_wanted: preferred mode
Sergei Shtylyov81d368e2007-03-03 17:48:53 +0100252 * @max_mode: highest allowed mode
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 *
254 * This routine returns the recommended PIO settings for a given drive,
255 * based on the drive->id information and the ide_pio_blacklist[].
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 *
Sergei Shtylyov81d368e2007-03-03 17:48:53 +0100257 * 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".
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 */
260
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +0200261u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262{
263 int pio_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 struct hd_driveid* id = drive->id;
265 int overridden = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200267 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) {
Bartlomiej Zolnierkiewicz342cdb62007-07-20 01:11:55 +0200272 printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 } 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? */
Bartlomiej Zolnierkiewicz22298332007-07-20 01:11:55 +0200280 if (id->capability & 8) { /* IORDY supported? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 }
291 }
292
Bartlomiej Zolnierkiewicz342cdb62007-07-20 01:11:55 +0200293 if (overridden)
294 printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n",
295 drive->name);
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 /*
298 * Conservative "downgrade" for all pre-ATA2 drives
299 */
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200300 if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 &&
301 pio_mode && pio_mode < 4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 pio_mode--;
Bartlomiej Zolnierkiewicz342cdb62007-07-20 01:11:55 +0200303 printk(KERN_INFO "%s: applying conservative "
304 "PIO \"downgrade\"\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 }
306 }
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200307
308 if (pio_mode > max_mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 pio_mode = max_mode;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200310
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 return pio_mode;
312}
313
314EXPORT_SYMBOL_GPL(ide_get_best_pio_mode);
315
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200316/* req_pio == "255" for auto-tune */
317void 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
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200340 (void)ide_set_pio_mode(drive, XFER_PIO_0 + pio);
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200341}
342
343EXPORT_SYMBOL_GPL(ide_set_pio);
344
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345/**
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
354void ide_toggle_bounce(ide_drive_t *drive, int on)
355{
356 u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
357
James Bottomley65931782005-11-18 23:13:33 +0100358 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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 addr = HWIF(drive)->pci_dev->dma_mask;
363 }
364
365 if (drive->queue)
366 blk_queue_bounce_limit(drive->queue, addr);
367}
368
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200369int 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
396int 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
414EXPORT_SYMBOL_GPL(ide_set_dma_mode);
415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416/**
417 * ide_set_xfer_rate - set transfer rate
418 * @drive: drive to set
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200419 * @rate: speed to attempt to set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 *
421 * General helper for setting the speed of an IDE device. This
422 * function knows about user enforced limits from the configuration
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200423 * which ->set_pio_mode/->set_dma_mode does not.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 */
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200425
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
427{
Bartlomiej Zolnierkiewiczf212ff22007-10-11 23:53:59 +0200428 ide_hwif_t *hwif = drive->hwif;
429
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200430 if (hwif->set_dma_mode == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 return -1;
Bartlomiej Zolnierkiewiczf212ff22007-10-11 23:53:59 +0200432
433 rate = ide_rate_filter(drive, rate);
434
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200435 if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5)
436 return ide_set_pio_mode(drive, rate);
Bartlomiej Zolnierkiewicz8f4dd2e2007-10-11 23:54:02 +0200437
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200438 /*
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 */
Bartlomiej Zolnierkiewicz8f4dd2e2007-10-11 23:54:02 +0200444
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200445 return ide_set_dma_mode(drive, rate);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446}
447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448static 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;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200461 if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
462 rq->cmd_type == REQ_TYPE_ATA_TASK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 char *args = rq->buffer;
464 if (args) {
465 opcode = args[0];
466 found = 1;
467 }
Jens Axboe4aff5e22006-08-10 08:44:47 +0200468 } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 ide_task_t *args = rq->special;
470 if (args) {
471 task_struct_t *tf = (task_struct_t *) args->tfRegister;
472 opcode = tf->command;
473 found = 1;
474 }
475 }
476
477 printk("ide: failed opcode was: ");
478 if (!found)
479 printk("unknown\n");
480 else
481 printk("0x%02x\n", opcode);
482}
483
484static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat)
485{
486 ide_hwif_t *hwif = HWIF(drive);
487 unsigned long flags;
488 u8 err = 0;
489
Ingo Molnar3d1c1cc2006-06-26 00:26:17 -0700490 local_irq_save(flags);
Denis Vlasenko13bbbf22005-07-03 17:09:13 +0200491 printk("%s: %s: status=0x%02x { ", drive->name, msg, stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 if (stat & BUSY_STAT)
493 printk("Busy ");
494 else {
495 if (stat & READY_STAT) printk("DriveReady ");
496 if (stat & WRERR_STAT) printk("DeviceFault ");
497 if (stat & SEEK_STAT) printk("SeekComplete ");
498 if (stat & DRQ_STAT) printk("DataRequest ");
499 if (stat & ECC_STAT) printk("CorrectedError ");
500 if (stat & INDEX_STAT) printk("Index ");
501 if (stat & ERR_STAT) printk("Error ");
502 }
Denis Vlasenko13bbbf22005-07-03 17:09:13 +0200503 printk("}\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
505 err = hwif->INB(IDE_ERROR_REG);
Denis Vlasenko13bbbf22005-07-03 17:09:13 +0200506 printk("%s: %s: error=0x%02x { ", drive->name, msg, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 if (err & ABRT_ERR) printk("DriveStatusError ");
508 if (err & ICRC_ERR)
Denis Vlasenko13bbbf22005-07-03 17:09:13 +0200509 printk((err & ABRT_ERR) ? "BadCRC " : "BadSector ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 if (err & ECC_ERR) printk("UncorrectableError ");
511 if (err & ID_ERR) printk("SectorIdNotFound ");
512 if (err & TRK0_ERR) printk("TrackZeroNotFound ");
513 if (err & MARK_ERR) printk("AddrMarkNotFound ");
514 printk("}");
515 if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR ||
516 (err & (ECC_ERR|ID_ERR|MARK_ERR))) {
517 if (drive->addressing == 1) {
518 __u64 sectors = 0;
519 u32 low = 0, high = 0;
Bartlomiej Zolnierkiewicz12eda142007-11-13 22:09:15 +0100520 hwif->OUTB(drive->ctl&~0x80, IDE_CONTROL_REG);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 low = ide_read_24(drive);
522 hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
523 high = ide_read_24(drive);
524 sectors = ((__u64)high << 24) | low;
525 printk(", LBAsect=%llu, high=%d, low=%d",
526 (unsigned long long) sectors,
527 high, low);
528 } else {
529 u8 cur = hwif->INB(IDE_SELECT_REG);
530 if (cur & 0x40) { /* using LBA? */
531 printk(", LBAsect=%ld", (unsigned long)
532 ((cur&0xf)<<24)
533 |(hwif->INB(IDE_HCYL_REG)<<16)
534 |(hwif->INB(IDE_LCYL_REG)<<8)
535 | hwif->INB(IDE_SECTOR_REG));
536 } else {
537 printk(", CHS=%d/%d/%d",
538 (hwif->INB(IDE_HCYL_REG)<<8) +
539 hwif->INB(IDE_LCYL_REG),
540 cur & 0xf,
541 hwif->INB(IDE_SECTOR_REG));
542 }
543 }
544 if (HWGROUP(drive) && HWGROUP(drive)->rq)
545 printk(", sector=%llu",
546 (unsigned long long)HWGROUP(drive)->rq->sector);
547 }
Denis Vlasenko13bbbf22005-07-03 17:09:13 +0200548 printk("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 ide_dump_opcode(drive);
551 local_irq_restore(flags);
552 return err;
553}
554
555/**
556 * ide_dump_atapi_status - print human readable atapi status
557 * @drive: drive that status applies to
558 * @msg: text message to print
559 * @stat: status byte to decode
560 *
561 * Error reporting, in human readable form (luxurious, but a memory hog).
562 */
563
564static u8 ide_dump_atapi_status(ide_drive_t *drive, const char *msg, u8 stat)
565{
566 unsigned long flags;
567
568 atapi_status_t status;
569 atapi_error_t error;
570
571 status.all = stat;
572 error.all = 0;
Ingo Molnar3d1c1cc2006-06-26 00:26:17 -0700573 local_irq_save(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 printk("%s: %s: status=0x%02x { ", drive->name, msg, stat);
575 if (status.b.bsy)
576 printk("Busy ");
577 else {
578 if (status.b.drdy) printk("DriveReady ");
579 if (status.b.df) printk("DeviceFault ");
580 if (status.b.dsc) printk("SeekComplete ");
581 if (status.b.drq) printk("DataRequest ");
582 if (status.b.corr) printk("CorrectedError ");
583 if (status.b.idx) printk("Index ");
584 if (status.b.check) printk("Error ");
585 }
586 printk("}\n");
587 if (status.b.check && !status.b.bsy) {
588 error.all = HWIF(drive)->INB(IDE_ERROR_REG);
589 printk("%s: %s: error=0x%02x { ", drive->name, msg, error.all);
590 if (error.b.ili) printk("IllegalLengthIndication ");
591 if (error.b.eom) printk("EndOfMedia ");
592 if (error.b.abrt) printk("AbortedCommand ");
593 if (error.b.mcr) printk("MediaChangeRequested ");
594 if (error.b.sense_key) printk("LastFailedSense=0x%02x ",
595 error.b.sense_key);
596 printk("}\n");
597 }
598 ide_dump_opcode(drive);
599 local_irq_restore(flags);
600 return error.all;
601}
602
603/**
604 * ide_dump_status - translate ATA/ATAPI error
605 * @drive: drive the error occured on
606 * @msg: information string
607 * @stat: status byte
608 *
609 * Error reporting, in human readable form (luxurious, but a memory hog).
610 * Combines the drive name, message and status byte to provide a
611 * user understandable explanation of the device error.
612 */
613
614u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
615{
616 if (drive->media == ide_disk)
617 return ide_dump_ata_status(drive, msg, stat);
618 return ide_dump_atapi_status(drive, msg, stat);
619}
620
621EXPORT_SYMBOL(ide_dump_status);