]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/block/ide.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge git://git.denx.de/u-boot-fsl-qoriq
[people/ms/u-boot.git] / drivers / block / ide.c
1 /*
2 * (C) Copyright 2000-2011
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <ata.h>
10 #include <dm.h>
11 #include <ide.h>
12 #include <watchdog.h>
13 #include <asm/io.h>
14
15 #ifdef __PPC__
16 # define EIEIO __asm__ volatile ("eieio")
17 # define SYNC __asm__ volatile ("sync")
18 #else
19 # define EIEIO /* nothing */
20 # define SYNC /* nothing */
21 #endif
22
23 /* Current offset for IDE0 / IDE1 bus access */
24 ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
25 #if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
26 CONFIG_SYS_ATA_IDE0_OFFSET,
27 #endif
28 #if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
29 CONFIG_SYS_ATA_IDE1_OFFSET,
30 #endif
31 };
32
33 static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
34
35 struct blk_desc ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
36
37 #define IDE_TIME_OUT 2000 /* 2 sec timeout */
38
39 #define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
40
41 #define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
42
43 #ifndef CONFIG_SYS_ATA_PORT_ADDR
44 #define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
45 #endif
46
47 #ifndef CONFIG_IDE_LED /* define LED macros, they are not used anyways */
48 # define DEVICE_LED(x) 0
49 # define LED_IDE1 1
50 # define LED_IDE2 2
51 #endif
52
53 #ifdef CONFIG_IDE_RESET
54 extern void ide_set_reset(int idereset);
55
56 static void ide_reset(void)
57 {
58 int i;
59
60 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
61 ide_bus_ok[i] = 0;
62 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
63 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
64
65 ide_set_reset(1); /* assert reset */
66
67 /* the reset signal shall be asserted for et least 25 us */
68 udelay(25);
69
70 WATCHDOG_RESET();
71
72 /* de-assert RESET signal */
73 ide_set_reset(0);
74
75 /* wait 250 ms */
76 for (i = 0; i < 250; ++i)
77 udelay(1000);
78 }
79 #else
80 #define ide_reset() /* dummy */
81 #endif /* CONFIG_IDE_RESET */
82
83 /*
84 * Wait until Busy bit is off, or timeout (in ms)
85 * Return last status
86 */
87 static uchar ide_wait(int dev, ulong t)
88 {
89 ulong delay = 10 * t; /* poll every 100 us */
90 uchar c;
91
92 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
93 udelay(100);
94 if (delay-- == 0)
95 break;
96 }
97 return c;
98 }
99
100 /*
101 * copy src to dest, skipping leading and trailing blanks and null
102 * terminate the string
103 * "len" is the size of available memory including the terminating '\0'
104 */
105 static void ident_cpy(unsigned char *dst, unsigned char *src,
106 unsigned int len)
107 {
108 unsigned char *end, *last;
109
110 last = dst;
111 end = src + len - 1;
112
113 /* reserve space for '\0' */
114 if (len < 2)
115 goto OUT;
116
117 /* skip leading white space */
118 while ((*src) && (src < end) && (*src == ' '))
119 ++src;
120
121 /* copy string, omitting trailing white space */
122 while ((*src) && (src < end)) {
123 *dst++ = *src;
124 if (*src++ != ' ')
125 last = dst;
126 }
127 OUT:
128 *last = '\0';
129 }
130
131 #ifdef CONFIG_ATAPI
132 /****************************************************************************
133 * ATAPI Support
134 */
135
136 #if defined(CONFIG_IDE_SWAP_IO)
137 /* since ATAPI may use commands with not 4 bytes alligned length
138 * we have our own transfer functions, 2 bytes alligned */
139 __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
140 {
141 ushort *dbuf;
142 volatile ushort *pbuf;
143
144 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
145 dbuf = (ushort *)sect_buf;
146
147 debug("in output data shorts base for read is %lx\n",
148 (unsigned long) pbuf);
149
150 while (shorts--) {
151 EIEIO;
152 *pbuf = *dbuf++;
153 }
154 }
155
156 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
157 {
158 ushort *dbuf;
159 volatile ushort *pbuf;
160
161 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
162 dbuf = (ushort *)sect_buf;
163
164 debug("in input data shorts base for read is %lx\n",
165 (unsigned long) pbuf);
166
167 while (shorts--) {
168 EIEIO;
169 *dbuf++ = *pbuf;
170 }
171 }
172
173 #else /* ! CONFIG_IDE_SWAP_IO */
174 __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
175 {
176 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
177 }
178
179 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
180 {
181 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
182 }
183
184 #endif /* CONFIG_IDE_SWAP_IO */
185
186 /*
187 * Wait until (Status & mask) == res, or timeout (in ms)
188 * Return last status
189 * This is used since some ATAPI CD ROMs clears their Busy Bit first
190 * and then they set their DRQ Bit
191 */
192 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
193 {
194 ulong delay = 10 * t; /* poll every 100 us */
195 uchar c;
196
197 /* prevents to read the status before valid */
198 c = ide_inb(dev, ATA_DEV_CTL);
199
200 while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
201 /* break if error occurs (doesn't make sense to wait more) */
202 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
203 break;
204 udelay(100);
205 if (delay-- == 0)
206 break;
207 }
208 return c;
209 }
210
211 /*
212 * issue an atapi command
213 */
214 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
215 unsigned char *buffer, int buflen)
216 {
217 unsigned char c, err, mask, res;
218 int n;
219
220 ide_led(DEVICE_LED(device), 1); /* LED on */
221
222 /* Select device
223 */
224 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
225 res = 0;
226 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
227 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
228 if ((c & mask) != res) {
229 printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
230 c);
231 err = 0xFF;
232 goto AI_OUT;
233 }
234 /* write taskfile */
235 ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
236 ide_outb(device, ATA_SECT_CNT, 0);
237 ide_outb(device, ATA_SECT_NUM, 0);
238 ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
239 ide_outb(device, ATA_CYL_HIGH,
240 (unsigned char) ((buflen >> 8) & 0xFF));
241 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
242
243 ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
244 udelay(50);
245
246 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
247 res = ATA_STAT_DRQ;
248 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
249
250 if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
251 printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
252 device, c);
253 err = 0xFF;
254 goto AI_OUT;
255 }
256
257 /* write command block */
258 ide_output_data_shorts(device, (unsigned short *)ccb, ccblen / 2);
259
260 /* ATAPI Command written wait for completition */
261 udelay(5000); /* device must set bsy */
262
263 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
264 /*
265 * if no data wait for DRQ = 0 BSY = 0
266 * if data wait for DRQ = 1 BSY = 0
267 */
268 res = 0;
269 if (buflen)
270 res = ATA_STAT_DRQ;
271 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
272 if ((c & mask) != res) {
273 if (c & ATA_STAT_ERR) {
274 err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
275 debug("atapi_issue 1 returned sense key %X status %02X\n",
276 err, c);
277 } else {
278 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
279 ccb[0], c);
280 err = 0xFF;
281 }
282 goto AI_OUT;
283 }
284 n = ide_inb(device, ATA_CYL_HIGH);
285 n <<= 8;
286 n += ide_inb(device, ATA_CYL_LOW);
287 if (n > buflen) {
288 printf("ERROR, transfer bytes %d requested only %d\n", n,
289 buflen);
290 err = 0xff;
291 goto AI_OUT;
292 }
293 if ((n == 0) && (buflen < 0)) {
294 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
295 err = 0xff;
296 goto AI_OUT;
297 }
298 if (n != buflen) {
299 debug("WARNING, transfer bytes %d not equal with requested %d\n",
300 n, buflen);
301 }
302 if (n != 0) { /* data transfer */
303 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
304 /* we transfer shorts */
305 n >>= 1;
306 /* ok now decide if it is an in or output */
307 if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
308 debug("Write to device\n");
309 ide_output_data_shorts(device, (unsigned short *)buffer,
310 n);
311 } else {
312 debug("Read from device @ %p shorts %d\n", buffer, n);
313 ide_input_data_shorts(device, (unsigned short *)buffer,
314 n);
315 }
316 }
317 udelay(5000); /* seems that some CD ROMs need this... */
318 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
319 res = 0;
320 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
321 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
322 err = (ide_inb(device, ATA_ERROR_REG) >> 4);
323 debug("atapi_issue 2 returned sense key %X status %X\n", err,
324 c);
325 } else {
326 err = 0;
327 }
328 AI_OUT:
329 ide_led(DEVICE_LED(device), 0); /* LED off */
330 return err;
331 }
332
333 /*
334 * sending the command to atapi_issue. If an status other than good
335 * returns, an request_sense will be issued
336 */
337
338 #define ATAPI_DRIVE_NOT_READY 100
339 #define ATAPI_UNIT_ATTN 10
340
341 unsigned char atapi_issue_autoreq(int device,
342 unsigned char *ccb,
343 int ccblen,
344 unsigned char *buffer, int buflen)
345 {
346 unsigned char sense_data[18], sense_ccb[12];
347 unsigned char res, key, asc, ascq;
348 int notready, unitattn;
349
350 unitattn = ATAPI_UNIT_ATTN;
351 notready = ATAPI_DRIVE_NOT_READY;
352
353 retry:
354 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
355 if (res == 0)
356 return 0; /* Ok */
357
358 if (res == 0xFF)
359 return 0xFF; /* error */
360
361 debug("(auto_req)atapi_issue returned sense key %X\n", res);
362
363 memset(sense_ccb, 0, sizeof(sense_ccb));
364 memset(sense_data, 0, sizeof(sense_data));
365 sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
366 sense_ccb[4] = 18; /* allocation Length */
367
368 res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
369 key = (sense_data[2] & 0xF);
370 asc = (sense_data[12]);
371 ascq = (sense_data[13]);
372
373 debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
374 debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
375 sense_data[0], key, asc, ascq);
376
377 if ((key == 0))
378 return 0; /* ok device ready */
379
380 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
381 if (unitattn-- > 0) {
382 udelay(200 * 1000);
383 goto retry;
384 }
385 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
386 goto error;
387 }
388 if ((asc == 0x4) && (ascq == 0x1)) {
389 /* not ready, but will be ready soon */
390 if (notready-- > 0) {
391 udelay(200 * 1000);
392 goto retry;
393 }
394 printf("Drive not ready, tried %d times\n",
395 ATAPI_DRIVE_NOT_READY);
396 goto error;
397 }
398 if (asc == 0x3a) {
399 debug("Media not present\n");
400 goto error;
401 }
402
403 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
404 ascq);
405 error:
406 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
407 return 0xFF;
408 }
409
410 /*
411 * atapi_read:
412 * we transfer only one block per command, since the multiple DRQ per
413 * command is not yet implemented
414 */
415 #define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
416 #define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
417 #define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
418
419 ulong atapi_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
420 void *buffer)
421 {
422 int device = block_dev->devnum;
423 ulong n = 0;
424 unsigned char ccb[12]; /* Command descriptor block */
425 ulong cnt;
426
427 debug("atapi_read dev %d start " LBAF " blocks " LBAF
428 " buffer at %lX\n", device, blknr, blkcnt, (ulong) buffer);
429
430 do {
431 if (blkcnt > ATAPI_READ_MAX_BLOCK)
432 cnt = ATAPI_READ_MAX_BLOCK;
433 else
434 cnt = blkcnt;
435
436 ccb[0] = ATAPI_CMD_READ_12;
437 ccb[1] = 0; /* reserved */
438 ccb[2] = (unsigned char) (blknr >> 24) & 0xFF; /* MSB Block */
439 ccb[3] = (unsigned char) (blknr >> 16) & 0xFF; /* */
440 ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
441 ccb[5] = (unsigned char) blknr & 0xFF; /* LSB Block */
442 ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
443 ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
444 ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
445 ccb[9] = (unsigned char) cnt & 0xFF; /* LSB Block */
446 ccb[10] = 0; /* reserved */
447 ccb[11] = 0; /* reserved */
448
449 if (atapi_issue_autoreq(device, ccb, 12,
450 (unsigned char *)buffer,
451 cnt * ATAPI_READ_BLOCK_SIZE)
452 == 0xFF) {
453 return n;
454 }
455 n += cnt;
456 blkcnt -= cnt;
457 blknr += cnt;
458 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
459 } while (blkcnt > 0);
460 return n;
461 }
462
463 static void atapi_inquiry(struct blk_desc *dev_desc)
464 {
465 unsigned char ccb[12]; /* Command descriptor block */
466 unsigned char iobuf[64]; /* temp buf */
467 unsigned char c;
468 int device;
469
470 device = dev_desc->devnum;
471 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
472 #ifndef CONFIG_BLK
473 dev_desc->block_read = atapi_read;
474 #endif
475
476 memset(ccb, 0, sizeof(ccb));
477 memset(iobuf, 0, sizeof(iobuf));
478
479 ccb[0] = ATAPI_CMD_INQUIRY;
480 ccb[4] = 40; /* allocation Legnth */
481 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 40);
482
483 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
484 if (c != 0)
485 return;
486
487 /* copy device ident strings */
488 ident_cpy((unsigned char *)dev_desc->vendor, &iobuf[8], 8);
489 ident_cpy((unsigned char *)dev_desc->product, &iobuf[16], 16);
490 ident_cpy((unsigned char *)dev_desc->revision, &iobuf[32], 5);
491
492 dev_desc->lun = 0;
493 dev_desc->lba = 0;
494 dev_desc->blksz = 0;
495 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
496 dev_desc->type = iobuf[0] & 0x1f;
497
498 if ((iobuf[1] & 0x80) == 0x80)
499 dev_desc->removable = 1;
500 else
501 dev_desc->removable = 0;
502
503 memset(ccb, 0, sizeof(ccb));
504 memset(iobuf, 0, sizeof(iobuf));
505 ccb[0] = ATAPI_CMD_START_STOP;
506 ccb[4] = 0x03; /* start */
507
508 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
509
510 debug("ATAPI_CMD_START_STOP returned %x\n", c);
511 if (c != 0)
512 return;
513
514 memset(ccb, 0, sizeof(ccb));
515 memset(iobuf, 0, sizeof(iobuf));
516 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
517
518 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
519 if (c != 0)
520 return;
521
522 memset(ccb, 0, sizeof(ccb));
523 memset(iobuf, 0, sizeof(iobuf));
524 ccb[0] = ATAPI_CMD_READ_CAP;
525 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 8);
526 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
527 if (c != 0)
528 return;
529
530 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
531 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
532 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
533
534 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
535 ((unsigned long) iobuf[1] << 16) +
536 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
537 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
538 ((unsigned long) iobuf[5] << 16) +
539 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
540 dev_desc->log2blksz = LOG2(dev_desc->blksz);
541 #ifdef CONFIG_LBA48
542 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
543 dev_desc->lba48 = 0;
544 #endif
545 return;
546 }
547
548 #endif /* CONFIG_ATAPI */
549
550 static void ide_ident(struct blk_desc *dev_desc)
551 {
552 unsigned char c;
553 hd_driveid_t iop;
554
555 #ifdef CONFIG_ATAPI
556 int retries = 0;
557 #endif
558 int device;
559
560 device = dev_desc->devnum;
561 printf(" Device %d: ", device);
562
563 ide_led(DEVICE_LED(device), 1); /* LED on */
564 /* Select device
565 */
566 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
567 dev_desc->if_type = IF_TYPE_IDE;
568 #ifdef CONFIG_ATAPI
569
570 retries = 0;
571
572 /* Warning: This will be tricky to read */
573 while (retries <= 1) {
574 /* check signature */
575 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
576 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
577 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
578 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
579 /* ATAPI Signature found */
580 dev_desc->if_type = IF_TYPE_ATAPI;
581 /*
582 * Start Ident Command
583 */
584 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
585 /*
586 * Wait for completion - ATAPI devices need more time
587 * to become ready
588 */
589 c = ide_wait(device, ATAPI_TIME_OUT);
590 } else
591 #endif
592 {
593 /*
594 * Start Ident Command
595 */
596 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
597
598 /*
599 * Wait for completion
600 */
601 c = ide_wait(device, IDE_TIME_OUT);
602 }
603 ide_led(DEVICE_LED(device), 0); /* LED off */
604
605 if (((c & ATA_STAT_DRQ) == 0) ||
606 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
607 #ifdef CONFIG_ATAPI
608 {
609 /*
610 * Need to soft reset the device
611 * in case it's an ATAPI...
612 */
613 debug("Retrying...\n");
614 ide_outb(device, ATA_DEV_HD,
615 ATA_LBA | ATA_DEVICE(device));
616 udelay(100000);
617 ide_outb(device, ATA_COMMAND, 0x08);
618 udelay(500000); /* 500 ms */
619 }
620 /*
621 * Select device
622 */
623 ide_outb(device, ATA_DEV_HD,
624 ATA_LBA | ATA_DEVICE(device));
625 retries++;
626 #else
627 return;
628 #endif
629 }
630 #ifdef CONFIG_ATAPI
631 else
632 break;
633 } /* see above - ugly to read */
634
635 if (retries == 2) /* Not found */
636 return;
637 #endif
638
639 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
640
641 ident_cpy((unsigned char *)dev_desc->revision, iop.fw_rev,
642 sizeof(dev_desc->revision));
643 ident_cpy((unsigned char *)dev_desc->vendor, iop.model,
644 sizeof(dev_desc->vendor));
645 ident_cpy((unsigned char *)dev_desc->product, iop.serial_no,
646 sizeof(dev_desc->product));
647 #ifdef __LITTLE_ENDIAN
648 /*
649 * firmware revision, model, and serial number have Big Endian Byte
650 * order in Word. Convert all three to little endian.
651 *
652 * See CF+ and CompactFlash Specification Revision 2.0:
653 * 6.2.1.6: Identify Drive, Table 39 for more details
654 */
655
656 strswab(dev_desc->revision);
657 strswab(dev_desc->vendor);
658 strswab(dev_desc->product);
659 #endif /* __LITTLE_ENDIAN */
660
661 if ((iop.config & 0x0080) == 0x0080)
662 dev_desc->removable = 1;
663 else
664 dev_desc->removable = 0;
665
666 #ifdef CONFIG_ATAPI
667 if (dev_desc->if_type == IF_TYPE_ATAPI) {
668 atapi_inquiry(dev_desc);
669 return;
670 }
671 #endif /* CONFIG_ATAPI */
672
673 #ifdef __BIG_ENDIAN
674 /* swap shorts */
675 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
676 #else /* ! __BIG_ENDIAN */
677 /*
678 * do not swap shorts on little endian
679 *
680 * See CF+ and CompactFlash Specification Revision 2.0:
681 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
682 */
683 dev_desc->lba = iop.lba_capacity;
684 #endif /* __BIG_ENDIAN */
685
686 #ifdef CONFIG_LBA48
687 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
688 dev_desc->lba48 = 1;
689 dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
690 ((unsigned long long) iop.lba48_capacity[1] << 16) |
691 ((unsigned long long) iop.lba48_capacity[2] << 32) |
692 ((unsigned long long) iop.lba48_capacity[3] << 48);
693 } else {
694 dev_desc->lba48 = 0;
695 }
696 #endif /* CONFIG_LBA48 */
697 /* assuming HD */
698 dev_desc->type = DEV_TYPE_HARDDISK;
699 dev_desc->blksz = ATA_BLOCKSIZE;
700 dev_desc->log2blksz = LOG2(dev_desc->blksz);
701 dev_desc->lun = 0; /* just to fill something in... */
702
703 #if 0 /* only used to test the powersaving mode,
704 * if enabled, the drive goes after 5 sec
705 * in standby mode */
706 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
707 c = ide_wait(device, IDE_TIME_OUT);
708 ide_outb(device, ATA_SECT_CNT, 1);
709 ide_outb(device, ATA_LBA_LOW, 0);
710 ide_outb(device, ATA_LBA_MID, 0);
711 ide_outb(device, ATA_LBA_HIGH, 0);
712 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
713 ide_outb(device, ATA_COMMAND, 0xe3);
714 udelay(50);
715 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
716 #endif
717 }
718
719 __weak void ide_led(uchar led, uchar status)
720 {
721 #if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
722 static uchar led_buffer; /* Buffer for current LED status */
723
724 uchar *led_port = LED_PORT;
725
726 if (status) /* switch LED on */
727 led_buffer |= led;
728 else /* switch LED off */
729 led_buffer &= ~led;
730
731 *led_port = led_buffer;
732 #endif
733 }
734
735 __weak void ide_outb(int dev, int port, unsigned char val)
736 {
737 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
738 dev, port, val,
739 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
740
741 #if defined(CONFIG_IDE_AHB)
742 if (port) {
743 /* write command */
744 ide_write_register(dev, port, val);
745 } else {
746 /* write data */
747 outb(val, (ATA_CURR_BASE(dev)));
748 }
749 #else
750 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
751 #endif
752 }
753
754 __weak unsigned char ide_inb(int dev, int port)
755 {
756 uchar val;
757
758 #if defined(CONFIG_IDE_AHB)
759 val = ide_read_register(dev, port);
760 #else
761 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
762 #endif
763
764 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
765 dev, port,
766 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
767 return val;
768 }
769
770 void ide_init(void)
771 {
772 unsigned char c;
773 int i, bus;
774
775 #ifdef CONFIG_IDE_PREINIT
776 WATCHDOG_RESET();
777
778 if (ide_preinit()) {
779 puts("ide_preinit failed\n");
780 return;
781 }
782 #endif /* CONFIG_IDE_PREINIT */
783
784 WATCHDOG_RESET();
785
786 /*
787 * Reset the IDE just to be sure.
788 * Light LED's to show
789 */
790 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
791
792 /* ATAPI Drives seems to need a proper IDE Reset */
793 ide_reset();
794
795 #ifdef CONFIG_IDE_INIT_POSTRESET
796 WATCHDOG_RESET();
797
798 if (ide_init_postreset()) {
799 puts("ide_preinit_postreset failed\n");
800 return;
801 }
802 #endif /* CONFIG_IDE_INIT_POSTRESET */
803
804 /*
805 * Wait for IDE to get ready.
806 * According to spec, this can take up to 31 seconds!
807 */
808 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
809 int dev =
810 bus * (CONFIG_SYS_IDE_MAXDEVICE /
811 CONFIG_SYS_IDE_MAXBUS);
812
813 printf("Bus %d: ", bus);
814
815 ide_bus_ok[bus] = 0;
816
817 /* Select device
818 */
819 udelay(100000); /* 100 ms */
820 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
821 udelay(100000); /* 100 ms */
822 i = 0;
823 do {
824 udelay(10000); /* 10 ms */
825
826 c = ide_inb(dev, ATA_STATUS);
827 i++;
828 if (i > (ATA_RESET_TIME * 100)) {
829 puts("** Timeout **\n");
830 /* LED's off */
831 ide_led((LED_IDE1 | LED_IDE2), 0);
832 return;
833 }
834 if ((i >= 100) && ((i % 100) == 0))
835 putc('.');
836
837 } while (c & ATA_STAT_BUSY);
838
839 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
840 puts("not available ");
841 debug("Status = 0x%02X ", c);
842 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
843 } else if ((c & ATA_STAT_READY) == 0) {
844 puts("not available ");
845 debug("Status = 0x%02X ", c);
846 #endif
847 } else {
848 puts("OK ");
849 ide_bus_ok[bus] = 1;
850 }
851 WATCHDOG_RESET();
852 }
853
854 putc('\n');
855
856 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
857
858 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
859 int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
860 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
861 ide_dev_desc[i].if_type = IF_TYPE_IDE;
862 ide_dev_desc[i].devnum = i;
863 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
864 ide_dev_desc[i].blksz = 0;
865 ide_dev_desc[i].log2blksz =
866 LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
867 ide_dev_desc[i].lba = 0;
868 #ifndef CONFIG_BLK
869 ide_dev_desc[i].block_read = ide_read;
870 ide_dev_desc[i].block_write = ide_write;
871 #endif
872 if (!ide_bus_ok[IDE_BUS(i)])
873 continue;
874 ide_led(led, 1); /* LED on */
875 ide_ident(&ide_dev_desc[i]);
876 ide_led(led, 0); /* LED off */
877 dev_print(&ide_dev_desc[i]);
878
879 if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
880 /* initialize partition type */
881 part_init(&ide_dev_desc[i]);
882 }
883 }
884 WATCHDOG_RESET();
885 }
886
887 /* We only need to swap data if we are running on a big endian cpu. */
888 #if defined(__LITTLE_ENDIAN)
889 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
890 {
891 ide_input_data(dev, sect_buf, words);
892 }
893 #else
894 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
895 {
896 volatile ushort *pbuf =
897 (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
898 ushort *dbuf = (ushort *)sect_buf;
899
900 debug("in input swap data base for read is %lx\n",
901 (unsigned long) pbuf);
902
903 while (words--) {
904 #ifdef __MIPS__
905 *dbuf++ = swab16p((u16 *)pbuf);
906 *dbuf++ = swab16p((u16 *)pbuf);
907 #else
908 *dbuf++ = ld_le16(pbuf);
909 *dbuf++ = ld_le16(pbuf);
910 #endif /* !MIPS */
911 }
912 }
913 #endif /* __LITTLE_ENDIAN */
914
915
916 #if defined(CONFIG_IDE_SWAP_IO)
917 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
918 {
919 ushort *dbuf;
920 volatile ushort *pbuf;
921
922 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
923 dbuf = (ushort *)sect_buf;
924 while (words--) {
925 EIEIO;
926 *pbuf = *dbuf++;
927 EIEIO;
928 *pbuf = *dbuf++;
929 }
930 }
931 #else /* ! CONFIG_IDE_SWAP_IO */
932 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
933 {
934 #if defined(CONFIG_IDE_AHB)
935 ide_write_data(dev, sect_buf, words);
936 #else
937 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
938 #endif
939 }
940 #endif /* CONFIG_IDE_SWAP_IO */
941
942 #if defined(CONFIG_IDE_SWAP_IO)
943 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
944 {
945 ushort *dbuf;
946 volatile ushort *pbuf;
947
948 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
949 dbuf = (ushort *)sect_buf;
950
951 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
952
953 while (words--) {
954 EIEIO;
955 *dbuf++ = *pbuf;
956 EIEIO;
957 *dbuf++ = *pbuf;
958 }
959 }
960 #else /* ! CONFIG_IDE_SWAP_IO */
961 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
962 {
963 #if defined(CONFIG_IDE_AHB)
964 ide_read_data(dev, sect_buf, words);
965 #else
966 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
967 #endif
968 }
969
970 #endif /* CONFIG_IDE_SWAP_IO */
971
972 #ifdef CONFIG_BLK
973 ulong ide_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
974 void *buffer)
975 #else
976 ulong ide_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
977 void *buffer)
978 #endif
979 {
980 #ifdef CONFIG_BLK
981 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
982 #endif
983 int device = block_dev->devnum;
984 ulong n = 0;
985 unsigned char c;
986 unsigned char pwrsave = 0; /* power save */
987
988 #ifdef CONFIG_LBA48
989 unsigned char lba48 = 0;
990
991 if (blknr & 0x0000fffff0000000ULL) {
992 /* more than 28 bits used, use 48bit mode */
993 lba48 = 1;
994 }
995 #endif
996 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
997 device, blknr, blkcnt, (ulong) buffer);
998
999 ide_led(DEVICE_LED(device), 1); /* LED on */
1000
1001 /* Select device
1002 */
1003 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1004 c = ide_wait(device, IDE_TIME_OUT);
1005
1006 if (c & ATA_STAT_BUSY) {
1007 printf("IDE read: device %d not ready\n", device);
1008 goto IDE_READ_E;
1009 }
1010
1011 /* first check if the drive is in Powersaving mode, if yes,
1012 * increase the timeout value */
1013 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
1014 udelay(50);
1015
1016 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
1017
1018 if (c & ATA_STAT_BUSY) {
1019 printf("IDE read: device %d not ready\n", device);
1020 goto IDE_READ_E;
1021 }
1022 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
1023 printf("No Powersaving mode %X\n", c);
1024 } else {
1025 c = ide_inb(device, ATA_SECT_CNT);
1026 debug("Powersaving %02X\n", c);
1027 if (c == 0)
1028 pwrsave = 1;
1029 }
1030
1031
1032 while (blkcnt-- > 0) {
1033 c = ide_wait(device, IDE_TIME_OUT);
1034
1035 if (c & ATA_STAT_BUSY) {
1036 printf("IDE read: device %d not ready\n", device);
1037 break;
1038 }
1039 #ifdef CONFIG_LBA48
1040 if (lba48) {
1041 /* write high bits */
1042 ide_outb(device, ATA_SECT_CNT, 0);
1043 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
1044 #ifdef CONFIG_SYS_64BIT_LBA
1045 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
1046 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
1047 #else
1048 ide_outb(device, ATA_LBA_MID, 0);
1049 ide_outb(device, ATA_LBA_HIGH, 0);
1050 #endif
1051 }
1052 #endif
1053 ide_outb(device, ATA_SECT_CNT, 1);
1054 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
1055 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
1056 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
1057
1058 #ifdef CONFIG_LBA48
1059 if (lba48) {
1060 ide_outb(device, ATA_DEV_HD,
1061 ATA_LBA | ATA_DEVICE(device));
1062 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
1063
1064 } else
1065 #endif
1066 {
1067 ide_outb(device, ATA_DEV_HD, ATA_LBA |
1068 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
1069 ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
1070 }
1071
1072 udelay(50);
1073
1074 if (pwrsave) {
1075 /* may take up to 4 sec */
1076 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
1077 pwrsave = 0;
1078 } else {
1079 /* can't take over 500 ms */
1080 c = ide_wait(device, IDE_TIME_OUT);
1081 }
1082
1083 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1084 ATA_STAT_DRQ) {
1085 printf("Error (no IRQ) dev %d blk " LBAF
1086 ": status %#02x\n", device, blknr, c);
1087 break;
1088 }
1089
1090 ide_input_data(device, buffer, ATA_SECTORWORDS);
1091 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
1092
1093 ++n;
1094 ++blknr;
1095 buffer += ATA_BLOCKSIZE;
1096 }
1097 IDE_READ_E:
1098 ide_led(DEVICE_LED(device), 0); /* LED off */
1099 return n;
1100 }
1101
1102 #ifdef CONFIG_BLK
1103 ulong ide_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
1104 const void *buffer)
1105 #else
1106 ulong ide_write(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
1107 const void *buffer)
1108 #endif
1109 {
1110 #ifdef CONFIG_BLK
1111 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
1112 #endif
1113 int device = block_dev->devnum;
1114 ulong n = 0;
1115 unsigned char c;
1116
1117 #ifdef CONFIG_LBA48
1118 unsigned char lba48 = 0;
1119
1120 if (blknr & 0x0000fffff0000000ULL) {
1121 /* more than 28 bits used, use 48bit mode */
1122 lba48 = 1;
1123 }
1124 #endif
1125
1126 ide_led(DEVICE_LED(device), 1); /* LED on */
1127
1128 /* Select device
1129 */
1130 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1131
1132 while (blkcnt-- > 0) {
1133 c = ide_wait(device, IDE_TIME_OUT);
1134
1135 if (c & ATA_STAT_BUSY) {
1136 printf("IDE read: device %d not ready\n", device);
1137 goto WR_OUT;
1138 }
1139 #ifdef CONFIG_LBA48
1140 if (lba48) {
1141 /* write high bits */
1142 ide_outb(device, ATA_SECT_CNT, 0);
1143 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
1144 #ifdef CONFIG_SYS_64BIT_LBA
1145 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
1146 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
1147 #else
1148 ide_outb(device, ATA_LBA_MID, 0);
1149 ide_outb(device, ATA_LBA_HIGH, 0);
1150 #endif
1151 }
1152 #endif
1153 ide_outb(device, ATA_SECT_CNT, 1);
1154 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
1155 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
1156 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
1157
1158 #ifdef CONFIG_LBA48
1159 if (lba48) {
1160 ide_outb(device, ATA_DEV_HD,
1161 ATA_LBA | ATA_DEVICE(device));
1162 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
1163
1164 } else
1165 #endif
1166 {
1167 ide_outb(device, ATA_DEV_HD, ATA_LBA |
1168 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
1169 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
1170 }
1171
1172 udelay(50);
1173
1174 /* can't take over 500 ms */
1175 c = ide_wait(device, IDE_TIME_OUT);
1176
1177 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1178 ATA_STAT_DRQ) {
1179 printf("Error (no IRQ) dev %d blk " LBAF
1180 ": status %#02x\n", device, blknr, c);
1181 goto WR_OUT;
1182 }
1183
1184 ide_output_data(device, buffer, ATA_SECTORWORDS);
1185 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
1186 ++n;
1187 ++blknr;
1188 buffer += ATA_BLOCKSIZE;
1189 }
1190 WR_OUT:
1191 ide_led(DEVICE_LED(device), 0); /* LED off */
1192 return n;
1193 }
1194
1195 #if defined(CONFIG_OF_IDE_FIXUP)
1196 int ide_device_present(int dev)
1197 {
1198 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1199 return 0;
1200 return ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1;
1201 }
1202 #endif
1203
1204 #ifdef CONFIG_BLK
1205 static const struct blk_ops ide_blk_ops = {
1206 .read = ide_read,
1207 .write = ide_write,
1208 };
1209
1210 U_BOOT_DRIVER(ide_blk) = {
1211 .name = "ide_blk",
1212 .id = UCLASS_BLK,
1213 .ops = &ide_blk_ops,
1214 };
1215 #else
1216 U_BOOT_LEGACY_BLK(ide) = {
1217 .if_typename = "ide",
1218 .if_type = IF_TYPE_IDE,
1219 .max_devs = CONFIG_SYS_IDE_MAXDEVICE,
1220 .desc = ide_dev_desc,
1221 };
1222 #endif
"Das U-Boot" Source Tree