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[people/ms/u-boot.git] / common / 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 dev_desc->block_read = atapi_read;
473
474 memset(ccb, 0, sizeof(ccb));
475 memset(iobuf, 0, sizeof(iobuf));
476
477 ccb[0] = ATAPI_CMD_INQUIRY;
478 ccb[4] = 40; /* allocation Legnth */
479 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 40);
480
481 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
482 if (c != 0)
483 return;
484
485 /* copy device ident strings */
486 ident_cpy((unsigned char *)dev_desc->vendor, &iobuf[8], 8);
487 ident_cpy((unsigned char *)dev_desc->product, &iobuf[16], 16);
488 ident_cpy((unsigned char *)dev_desc->revision, &iobuf[32], 5);
489
490 dev_desc->lun = 0;
491 dev_desc->lba = 0;
492 dev_desc->blksz = 0;
493 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
494 dev_desc->type = iobuf[0] & 0x1f;
495
496 if ((iobuf[1] & 0x80) == 0x80)
497 dev_desc->removable = 1;
498 else
499 dev_desc->removable = 0;
500
501 memset(ccb, 0, sizeof(ccb));
502 memset(iobuf, 0, sizeof(iobuf));
503 ccb[0] = ATAPI_CMD_START_STOP;
504 ccb[4] = 0x03; /* start */
505
506 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
507
508 debug("ATAPI_CMD_START_STOP returned %x\n", c);
509 if (c != 0)
510 return;
511
512 memset(ccb, 0, sizeof(ccb));
513 memset(iobuf, 0, sizeof(iobuf));
514 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
515
516 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
517 if (c != 0)
518 return;
519
520 memset(ccb, 0, sizeof(ccb));
521 memset(iobuf, 0, sizeof(iobuf));
522 ccb[0] = ATAPI_CMD_READ_CAP;
523 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 8);
524 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
525 if (c != 0)
526 return;
527
528 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
529 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
530 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
531
532 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
533 ((unsigned long) iobuf[1] << 16) +
534 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
535 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
536 ((unsigned long) iobuf[5] << 16) +
537 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
538 dev_desc->log2blksz = LOG2(dev_desc->blksz);
539 #ifdef CONFIG_LBA48
540 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
541 dev_desc->lba48 = 0;
542 #endif
543 return;
544 }
545
546 #endif /* CONFIG_ATAPI */
547
548 static void ide_ident(struct blk_desc *dev_desc)
549 {
550 unsigned char c;
551 hd_driveid_t iop;
552
553 #ifdef CONFIG_ATAPI
554 int retries = 0;
555 #endif
556 int device;
557
558 device = dev_desc->devnum;
559 printf(" Device %d: ", device);
560
561 ide_led(DEVICE_LED(device), 1); /* LED on */
562 /* Select device
563 */
564 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
565 dev_desc->if_type = IF_TYPE_IDE;
566 #ifdef CONFIG_ATAPI
567
568 retries = 0;
569
570 /* Warning: This will be tricky to read */
571 while (retries <= 1) {
572 /* check signature */
573 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
574 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
575 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
576 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
577 /* ATAPI Signature found */
578 dev_desc->if_type = IF_TYPE_ATAPI;
579 /*
580 * Start Ident Command
581 */
582 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
583 /*
584 * Wait for completion - ATAPI devices need more time
585 * to become ready
586 */
587 c = ide_wait(device, ATAPI_TIME_OUT);
588 } else
589 #endif
590 {
591 /*
592 * Start Ident Command
593 */
594 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
595
596 /*
597 * Wait for completion
598 */
599 c = ide_wait(device, IDE_TIME_OUT);
600 }
601 ide_led(DEVICE_LED(device), 0); /* LED off */
602
603 if (((c & ATA_STAT_DRQ) == 0) ||
604 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
605 #ifdef CONFIG_ATAPI
606 {
607 /*
608 * Need to soft reset the device
609 * in case it's an ATAPI...
610 */
611 debug("Retrying...\n");
612 ide_outb(device, ATA_DEV_HD,
613 ATA_LBA | ATA_DEVICE(device));
614 udelay(100000);
615 ide_outb(device, ATA_COMMAND, 0x08);
616 udelay(500000); /* 500 ms */
617 }
618 /*
619 * Select device
620 */
621 ide_outb(device, ATA_DEV_HD,
622 ATA_LBA | ATA_DEVICE(device));
623 retries++;
624 #else
625 return;
626 #endif
627 }
628 #ifdef CONFIG_ATAPI
629 else
630 break;
631 } /* see above - ugly to read */
632
633 if (retries == 2) /* Not found */
634 return;
635 #endif
636
637 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
638
639 ident_cpy((unsigned char *)dev_desc->revision, iop.fw_rev,
640 sizeof(dev_desc->revision));
641 ident_cpy((unsigned char *)dev_desc->vendor, iop.model,
642 sizeof(dev_desc->vendor));
643 ident_cpy((unsigned char *)dev_desc->product, iop.serial_no,
644 sizeof(dev_desc->product));
645 #ifdef __LITTLE_ENDIAN
646 /*
647 * firmware revision, model, and serial number have Big Endian Byte
648 * order in Word. Convert all three to little endian.
649 *
650 * See CF+ and CompactFlash Specification Revision 2.0:
651 * 6.2.1.6: Identify Drive, Table 39 for more details
652 */
653
654 strswab(dev_desc->revision);
655 strswab(dev_desc->vendor);
656 strswab(dev_desc->product);
657 #endif /* __LITTLE_ENDIAN */
658
659 if ((iop.config & 0x0080) == 0x0080)
660 dev_desc->removable = 1;
661 else
662 dev_desc->removable = 0;
663
664 #ifdef CONFIG_ATAPI
665 if (dev_desc->if_type == IF_TYPE_ATAPI) {
666 atapi_inquiry(dev_desc);
667 return;
668 }
669 #endif /* CONFIG_ATAPI */
670
671 #ifdef __BIG_ENDIAN
672 /* swap shorts */
673 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
674 #else /* ! __BIG_ENDIAN */
675 /*
676 * do not swap shorts on little endian
677 *
678 * See CF+ and CompactFlash Specification Revision 2.0:
679 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
680 */
681 dev_desc->lba = iop.lba_capacity;
682 #endif /* __BIG_ENDIAN */
683
684 #ifdef CONFIG_LBA48
685 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
686 dev_desc->lba48 = 1;
687 dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
688 ((unsigned long long) iop.lba48_capacity[1] << 16) |
689 ((unsigned long long) iop.lba48_capacity[2] << 32) |
690 ((unsigned long long) iop.lba48_capacity[3] << 48);
691 } else {
692 dev_desc->lba48 = 0;
693 }
694 #endif /* CONFIG_LBA48 */
695 /* assuming HD */
696 dev_desc->type = DEV_TYPE_HARDDISK;
697 dev_desc->blksz = ATA_BLOCKSIZE;
698 dev_desc->log2blksz = LOG2(dev_desc->blksz);
699 dev_desc->lun = 0; /* just to fill something in... */
700
701 #if 0 /* only used to test the powersaving mode,
702 * if enabled, the drive goes after 5 sec
703 * in standby mode */
704 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
705 c = ide_wait(device, IDE_TIME_OUT);
706 ide_outb(device, ATA_SECT_CNT, 1);
707 ide_outb(device, ATA_LBA_LOW, 0);
708 ide_outb(device, ATA_LBA_MID, 0);
709 ide_outb(device, ATA_LBA_HIGH, 0);
710 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
711 ide_outb(device, ATA_COMMAND, 0xe3);
712 udelay(50);
713 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
714 #endif
715 }
716
717 __weak void ide_led(uchar led, uchar status)
718 {
719 #if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
720 static uchar led_buffer; /* Buffer for current LED status */
721
722 uchar *led_port = LED_PORT;
723
724 if (status) /* switch LED on */
725 led_buffer |= led;
726 else /* switch LED off */
727 led_buffer &= ~led;
728
729 *led_port = led_buffer;
730 #endif
731 }
732
733 __weak void ide_outb(int dev, int port, unsigned char val)
734 {
735 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
736 dev, port, val,
737 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
738
739 #if defined(CONFIG_IDE_AHB)
740 if (port) {
741 /* write command */
742 ide_write_register(dev, port, val);
743 } else {
744 /* write data */
745 outb(val, (ATA_CURR_BASE(dev)));
746 }
747 #else
748 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
749 #endif
750 }
751
752 __weak unsigned char ide_inb(int dev, int port)
753 {
754 uchar val;
755
756 #if defined(CONFIG_IDE_AHB)
757 val = ide_read_register(dev, port);
758 #else
759 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
760 #endif
761
762 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
763 dev, port,
764 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
765 return val;
766 }
767
768 void ide_init(void)
769 {
770 unsigned char c;
771 int i, bus;
772
773 #ifdef CONFIG_IDE_8xx_PCCARD
774 extern int ide_devices_found; /* Initialized in check_ide_device() */
775 #endif /* CONFIG_IDE_8xx_PCCARD */
776
777 #ifdef CONFIG_IDE_PREINIT
778 WATCHDOG_RESET();
779
780 if (ide_preinit()) {
781 puts("ide_preinit failed\n");
782 return;
783 }
784 #endif /* CONFIG_IDE_PREINIT */
785
786 WATCHDOG_RESET();
787
788 /*
789 * Reset the IDE just to be sure.
790 * Light LED's to show
791 */
792 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
793
794 /* ATAPI Drives seems to need a proper IDE Reset */
795 ide_reset();
796
797 #ifdef CONFIG_IDE_INIT_POSTRESET
798 WATCHDOG_RESET();
799
800 if (ide_init_postreset()) {
801 puts("ide_preinit_postreset failed\n");
802 return;
803 }
804 #endif /* CONFIG_IDE_INIT_POSTRESET */
805
806 /*
807 * Wait for IDE to get ready.
808 * According to spec, this can take up to 31 seconds!
809 */
810 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
811 int dev =
812 bus * (CONFIG_SYS_IDE_MAXDEVICE /
813 CONFIG_SYS_IDE_MAXBUS);
814
815 #ifdef CONFIG_IDE_8xx_PCCARD
816 /* Skip non-ide devices from probing */
817 if ((ide_devices_found & (1 << bus)) == 0) {
818 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
819 continue;
820 }
821 #endif
822 printf("Bus %d: ", bus);
823
824 ide_bus_ok[bus] = 0;
825
826 /* Select device
827 */
828 udelay(100000); /* 100 ms */
829 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
830 udelay(100000); /* 100 ms */
831 i = 0;
832 do {
833 udelay(10000); /* 10 ms */
834
835 c = ide_inb(dev, ATA_STATUS);
836 i++;
837 if (i > (ATA_RESET_TIME * 100)) {
838 puts("** Timeout **\n");
839 /* LED's off */
840 ide_led((LED_IDE1 | LED_IDE2), 0);
841 return;
842 }
843 if ((i >= 100) && ((i % 100) == 0))
844 putc('.');
845
846 } while (c & ATA_STAT_BUSY);
847
848 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
849 puts("not available ");
850 debug("Status = 0x%02X ", c);
851 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
852 } else if ((c & ATA_STAT_READY) == 0) {
853 puts("not available ");
854 debug("Status = 0x%02X ", c);
855 #endif
856 } else {
857 puts("OK ");
858 ide_bus_ok[bus] = 1;
859 }
860 WATCHDOG_RESET();
861 }
862
863 putc('\n');
864
865 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
866
867 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
868 int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
869 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
870 ide_dev_desc[i].if_type = IF_TYPE_IDE;
871 ide_dev_desc[i].devnum = i;
872 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
873 ide_dev_desc[i].blksz = 0;
874 ide_dev_desc[i].log2blksz =
875 LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
876 ide_dev_desc[i].lba = 0;
877 #ifndef CONFIG_BLK
878 ide_dev_desc[i].block_read = ide_read;
879 ide_dev_desc[i].block_write = ide_write;
880 #endif
881 if (!ide_bus_ok[IDE_BUS(i)])
882 continue;
883 ide_led(led, 1); /* LED on */
884 ide_ident(&ide_dev_desc[i]);
885 ide_led(led, 0); /* LED off */
886 dev_print(&ide_dev_desc[i]);
887
888 if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
889 /* initialize partition type */
890 part_init(&ide_dev_desc[i]);
891 }
892 }
893 WATCHDOG_RESET();
894 }
895
896 /* We only need to swap data if we are running on a big endian cpu. */
897 #if defined(__LITTLE_ENDIAN)
898 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
899 {
900 ide_input_data(dev, sect_buf, words);
901 }
902 #else
903 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
904 {
905 volatile ushort *pbuf =
906 (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
907 ushort *dbuf = (ushort *)sect_buf;
908
909 debug("in input swap data base for read is %lx\n",
910 (unsigned long) pbuf);
911
912 while (words--) {
913 #ifdef __MIPS__
914 *dbuf++ = swab16p((u16 *)pbuf);
915 *dbuf++ = swab16p((u16 *)pbuf);
916 #else
917 *dbuf++ = ld_le16(pbuf);
918 *dbuf++ = ld_le16(pbuf);
919 #endif /* !MIPS */
920 }
921 }
922 #endif /* __LITTLE_ENDIAN */
923
924
925 #if defined(CONFIG_IDE_SWAP_IO)
926 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
927 {
928 ushort *dbuf;
929 volatile ushort *pbuf;
930
931 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
932 dbuf = (ushort *)sect_buf;
933 while (words--) {
934 EIEIO;
935 *pbuf = *dbuf++;
936 EIEIO;
937 *pbuf = *dbuf++;
938 }
939 }
940 #else /* ! CONFIG_IDE_SWAP_IO */
941 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
942 {
943 #if defined(CONFIG_IDE_AHB)
944 ide_write_data(dev, sect_buf, words);
945 #else
946 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
947 #endif
948 }
949 #endif /* CONFIG_IDE_SWAP_IO */
950
951 #if defined(CONFIG_IDE_SWAP_IO)
952 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
953 {
954 ushort *dbuf;
955 volatile ushort *pbuf;
956
957 pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
958 dbuf = (ushort *)sect_buf;
959
960 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
961
962 while (words--) {
963 EIEIO;
964 *dbuf++ = *pbuf;
965 EIEIO;
966 *dbuf++ = *pbuf;
967 }
968 }
969 #else /* ! CONFIG_IDE_SWAP_IO */
970 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
971 {
972 #if defined(CONFIG_IDE_AHB)
973 ide_read_data(dev, sect_buf, words);
974 #else
975 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
976 #endif
977 }
978
979 #endif /* CONFIG_IDE_SWAP_IO */
980
981 #ifdef CONFIG_BLK
982 ulong ide_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
983 void *buffer)
984 #else
985 ulong ide_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
986 void *buffer)
987 #endif
988 {
989 #ifdef CONFIG_BLK
990 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
991 #endif
992 int device = block_dev->devnum;
993 ulong n = 0;
994 unsigned char c;
995 unsigned char pwrsave = 0; /* power save */
996
997 #ifdef CONFIG_LBA48
998 unsigned char lba48 = 0;
999
1000 if (blknr & 0x0000fffff0000000ULL) {
1001 /* more than 28 bits used, use 48bit mode */
1002 lba48 = 1;
1003 }
1004 #endif
1005 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
1006 device, blknr, blkcnt, (ulong) buffer);
1007
1008 ide_led(DEVICE_LED(device), 1); /* LED on */
1009
1010 /* Select device
1011 */
1012 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1013 c = ide_wait(device, IDE_TIME_OUT);
1014
1015 if (c & ATA_STAT_BUSY) {
1016 printf("IDE read: device %d not ready\n", device);
1017 goto IDE_READ_E;
1018 }
1019
1020 /* first check if the drive is in Powersaving mode, if yes,
1021 * increase the timeout value */
1022 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
1023 udelay(50);
1024
1025 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
1026
1027 if (c & ATA_STAT_BUSY) {
1028 printf("IDE read: device %d not ready\n", device);
1029 goto IDE_READ_E;
1030 }
1031 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
1032 printf("No Powersaving mode %X\n", c);
1033 } else {
1034 c = ide_inb(device, ATA_SECT_CNT);
1035 debug("Powersaving %02X\n", c);
1036 if (c == 0)
1037 pwrsave = 1;
1038 }
1039
1040
1041 while (blkcnt-- > 0) {
1042 c = ide_wait(device, IDE_TIME_OUT);
1043
1044 if (c & ATA_STAT_BUSY) {
1045 printf("IDE read: device %d not ready\n", device);
1046 break;
1047 }
1048 #ifdef CONFIG_LBA48
1049 if (lba48) {
1050 /* write high bits */
1051 ide_outb(device, ATA_SECT_CNT, 0);
1052 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
1053 #ifdef CONFIG_SYS_64BIT_LBA
1054 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
1055 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
1056 #else
1057 ide_outb(device, ATA_LBA_MID, 0);
1058 ide_outb(device, ATA_LBA_HIGH, 0);
1059 #endif
1060 }
1061 #endif
1062 ide_outb(device, ATA_SECT_CNT, 1);
1063 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
1064 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
1065 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
1066
1067 #ifdef CONFIG_LBA48
1068 if (lba48) {
1069 ide_outb(device, ATA_DEV_HD,
1070 ATA_LBA | ATA_DEVICE(device));
1071 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
1072
1073 } else
1074 #endif
1075 {
1076 ide_outb(device, ATA_DEV_HD, ATA_LBA |
1077 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
1078 ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
1079 }
1080
1081 udelay(50);
1082
1083 if (pwrsave) {
1084 /* may take up to 4 sec */
1085 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
1086 pwrsave = 0;
1087 } else {
1088 /* can't take over 500 ms */
1089 c = ide_wait(device, IDE_TIME_OUT);
1090 }
1091
1092 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1093 ATA_STAT_DRQ) {
1094 printf("Error (no IRQ) dev %d blk " LBAF
1095 ": status %#02x\n", device, blknr, c);
1096 break;
1097 }
1098
1099 ide_input_data(device, buffer, ATA_SECTORWORDS);
1100 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
1101
1102 ++n;
1103 ++blknr;
1104 buffer += ATA_BLOCKSIZE;
1105 }
1106 IDE_READ_E:
1107 ide_led(DEVICE_LED(device), 0); /* LED off */
1108 return n;
1109 }
1110
1111 #ifdef CONFIG_BLK
1112 ulong ide_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
1113 const void *buffer)
1114 #else
1115 ulong ide_write(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
1116 const void *buffer)
1117 #endif
1118 {
1119 #ifdef CONFIG_BLK
1120 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
1121 #endif
1122 int device = block_dev->devnum;
1123 ulong n = 0;
1124 unsigned char c;
1125
1126 #ifdef CONFIG_LBA48
1127 unsigned char lba48 = 0;
1128
1129 if (blknr & 0x0000fffff0000000ULL) {
1130 /* more than 28 bits used, use 48bit mode */
1131 lba48 = 1;
1132 }
1133 #endif
1134
1135 ide_led(DEVICE_LED(device), 1); /* LED on */
1136
1137 /* Select device
1138 */
1139 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1140
1141 while (blkcnt-- > 0) {
1142 c = ide_wait(device, IDE_TIME_OUT);
1143
1144 if (c & ATA_STAT_BUSY) {
1145 printf("IDE read: device %d not ready\n", device);
1146 goto WR_OUT;
1147 }
1148 #ifdef CONFIG_LBA48
1149 if (lba48) {
1150 /* write high bits */
1151 ide_outb(device, ATA_SECT_CNT, 0);
1152 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
1153 #ifdef CONFIG_SYS_64BIT_LBA
1154 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
1155 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
1156 #else
1157 ide_outb(device, ATA_LBA_MID, 0);
1158 ide_outb(device, ATA_LBA_HIGH, 0);
1159 #endif
1160 }
1161 #endif
1162 ide_outb(device, ATA_SECT_CNT, 1);
1163 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
1164 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
1165 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
1166
1167 #ifdef CONFIG_LBA48
1168 if (lba48) {
1169 ide_outb(device, ATA_DEV_HD,
1170 ATA_LBA | ATA_DEVICE(device));
1171 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
1172
1173 } else
1174 #endif
1175 {
1176 ide_outb(device, ATA_DEV_HD, ATA_LBA |
1177 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
1178 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
1179 }
1180
1181 udelay(50);
1182
1183 /* can't take over 500 ms */
1184 c = ide_wait(device, IDE_TIME_OUT);
1185
1186 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1187 ATA_STAT_DRQ) {
1188 printf("Error (no IRQ) dev %d blk " LBAF
1189 ": status %#02x\n", device, blknr, c);
1190 goto WR_OUT;
1191 }
1192
1193 ide_output_data(device, buffer, ATA_SECTORWORDS);
1194 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
1195 ++n;
1196 ++blknr;
1197 buffer += ATA_BLOCKSIZE;
1198 }
1199 WR_OUT:
1200 ide_led(DEVICE_LED(device), 0); /* LED off */
1201 return n;
1202 }
1203
1204 #if defined(CONFIG_OF_IDE_FIXUP)
1205 int ide_device_present(int dev)
1206 {
1207 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1208 return 0;
1209 return ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1;
1210 }
1211 #endif
1212
1213 #ifdef CONFIG_BLK
1214 static const struct blk_ops ide_blk_ops = {
1215 .read = ide_read,
1216 .write = ide_write,
1217 };
1218
1219 U_BOOT_DRIVER(ide_blk) = {
1220 .name = "ide_blk",
1221 .id = UCLASS_BLK,
1222 .ops = &ide_blk_ops,
1223 };
1224 #else
1225 U_BOOT_LEGACY_BLK(ide) = {
1226 .if_typename = "ide",
1227 .if_type = IF_TYPE_IDE,
1228 .max_devs = CONFIG_SYS_IDE_MAXDEVICE,
1229 .desc = ide_dev_desc,
1230 };
1231 #endif
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