1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2011
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 #define LOG_CATEGORY UCLASS_IDE
19 #include <linux/delay.h>
22 # define EIEIO __asm__ volatile ("eieio")
23 # define SYNC __asm__ volatile ("sync")
25 # define EIEIO /* nothing */
26 # define SYNC /* nothing */
29 /* Current offset for IDE0 / IDE1 bus access */
30 ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
31 #if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
32 CONFIG_SYS_ATA_IDE0_OFFSET,
34 #if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
35 CONFIG_SYS_ATA_IDE1_OFFSET,
39 #define ATA_CURR_BASE(dev) (CONFIG_SYS_ATA_BASE_ADDR + \
40 ide_bus_offset[IDE_BUS(dev)])
42 static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
44 struct blk_desc ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
46 #define IDE_TIME_OUT 2000 /* 2 sec timeout */
48 #define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
50 #define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
52 #ifdef CONFIG_IDE_RESET
53 static void ide_reset(void)
57 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
60 ide_set_reset(1); /* assert reset */
62 /* the reset signal shall be asserted for et least 25 us */
67 /* de-assert RESET signal */
73 #define ide_reset() /* dummy */
74 #endif /* CONFIG_IDE_RESET */
76 static void ide_outb(int dev, int port, unsigned char val)
78 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
79 dev, port, val, ATA_CURR_BASE(dev) + port);
81 outb(val, ATA_CURR_BASE(dev) + port);
84 static unsigned char ide_inb(int dev, int port)
88 val = inb(ATA_CURR_BASE(dev) + port);
90 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
91 dev, port, ATA_CURR_BASE(dev) + port, val);
95 static void ide_input_swap_data(int dev, ulong *sect_buf, int words)
97 uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
98 ushort *dbuf = (ushort *)sect_buf;
100 debug("in input swap data base for read is %p\n", (void *)paddr);
104 *dbuf++ = be16_to_cpu(inw(paddr));
106 *dbuf++ = be16_to_cpu(inw(paddr));
111 * Wait until Busy bit is off, or timeout (in ms)
114 static uchar ide_wait(int dev, ulong t)
116 ulong delay = 10 * t; /* poll every 100 us */
119 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
128 * copy src to dest, skipping leading and trailing blanks and null
129 * terminate the string
130 * "len" is the size of available memory including the terminating '\0'
132 static void ident_cpy(unsigned char *dst, unsigned char *src,
135 unsigned char *end, *last;
140 /* reserve space for '\0' */
144 /* skip leading white space */
145 while ((*src) && (src < end) && (*src == ' '))
148 /* copy string, omitting trailing white space */
149 while ((*src) && (src < end)) {
158 /****************************************************************************
162 /* since ATAPI may use commands with not 4 bytes alligned length
163 * we have our own transfer functions, 2 bytes alligned */
164 static void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
166 uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
169 dbuf = (ushort *)sect_buf;
171 debug("in output data shorts base for read is %p\n", (void *)paddr);
175 outw(cpu_to_le16(*dbuf++), paddr);
179 static void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
181 uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
184 dbuf = (ushort *)sect_buf;
186 debug("in input data shorts base for read is %p\n", (void *)paddr);
190 *dbuf++ = le16_to_cpu(inw(paddr));
195 * Wait until (Status & mask) == res, or timeout (in ms)
197 * This is used since some ATAPI CD ROMs clears their Busy Bit first
198 * and then they set their DRQ Bit
200 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
202 ulong delay = 10 * t; /* poll every 100 us */
205 /* prevents to read the status before valid */
206 c = ide_inb(dev, ATA_DEV_CTL);
208 while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
209 /* break if error occurs (doesn't make sense to wait more) */
210 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
220 * issue an atapi command
222 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
223 unsigned char *buffer, int buflen)
225 unsigned char c, err, mask, res;
230 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
232 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
233 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
234 if ((c & mask) != res) {
235 printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
241 ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
242 ide_outb(device, ATA_SECT_CNT, 0);
243 ide_outb(device, ATA_SECT_NUM, 0);
244 ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
245 ide_outb(device, ATA_CYL_HIGH,
246 (unsigned char) ((buflen >> 8) & 0xFF));
247 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
249 ide_outb(device, ATA_COMMAND, ATA_CMD_PACKET);
252 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
254 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
256 if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
257 printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
263 /* write command block */
264 ide_output_data_shorts(device, (unsigned short *)ccb, ccblen / 2);
266 /* ATAPI Command written wait for completition */
267 mdelay(5); /* device must set bsy */
269 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
271 * if no data wait for DRQ = 0 BSY = 0
272 * if data wait for DRQ = 1 BSY = 0
277 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
278 if ((c & mask) != res) {
279 if (c & ATA_STAT_ERR) {
280 err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
281 debug("atapi_issue 1 returned sense key %X status %02X\n",
284 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
290 n = ide_inb(device, ATA_CYL_HIGH);
292 n += ide_inb(device, ATA_CYL_LOW);
294 printf("ERROR, transfer bytes %d requested only %d\n", n,
299 if ((n == 0) && (buflen < 0)) {
300 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
305 debug("WARNING, transfer bytes %d not equal with requested %d\n",
308 if (n != 0) { /* data transfer */
309 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
310 /* we transfer shorts */
312 /* ok now decide if it is an in or output */
313 if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
314 debug("Write to device\n");
315 ide_output_data_shorts(device, (unsigned short *)buffer,
318 debug("Read from device @ %p shorts %d\n", buffer, n);
319 ide_input_data_shorts(device, (unsigned short *)buffer,
323 mdelay(5); /* seems that some CD ROMs need this... */
324 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
326 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
327 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
328 err = (ide_inb(device, ATA_ERROR_REG) >> 4);
329 debug("atapi_issue 2 returned sense key %X status %X\n", err,
339 * sending the command to atapi_issue. If an status other than good
340 * returns, an request_sense will be issued
343 #define ATAPI_DRIVE_NOT_READY 100
344 #define ATAPI_UNIT_ATTN 10
346 unsigned char atapi_issue_autoreq(int device,
349 unsigned char *buffer, int buflen)
351 unsigned char sense_data[18], sense_ccb[12];
352 unsigned char res, key, asc, ascq;
353 int notready, unitattn;
355 unitattn = ATAPI_UNIT_ATTN;
356 notready = ATAPI_DRIVE_NOT_READY;
359 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
364 return 0xFF; /* error */
366 debug("(auto_req)atapi_issue returned sense key %X\n", res);
368 memset(sense_ccb, 0, sizeof(sense_ccb));
369 memset(sense_data, 0, sizeof(sense_data));
370 sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
371 sense_ccb[4] = 18; /* allocation Length */
373 res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
374 key = (sense_data[2] & 0xF);
375 asc = (sense_data[12]);
376 ascq = (sense_data[13]);
378 debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
379 debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
380 sense_data[0], key, asc, ascq);
383 return 0; /* ok device ready */
385 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
386 if (unitattn-- > 0) {
390 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
393 if ((asc == 0x4) && (ascq == 0x1)) {
394 /* not ready, but will be ready soon */
395 if (notready-- > 0) {
399 printf("Drive not ready, tried %d times\n",
400 ATAPI_DRIVE_NOT_READY);
404 debug("Media not present\n");
408 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
411 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
417 * we transfer only one block per command, since the multiple DRQ per
418 * command is not yet implemented
420 #define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
421 #define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
422 #define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
424 ulong atapi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
427 struct blk_desc *block_dev = dev_get_uclass_plat(dev);
428 int device = block_dev->devnum;
430 unsigned char ccb[12]; /* Command descriptor block */
433 debug("atapi_read dev %d start " LBAF " blocks " LBAF
434 " buffer at %lX\n", device, blknr, blkcnt, (ulong) buffer);
437 if (blkcnt > ATAPI_READ_MAX_BLOCK)
438 cnt = ATAPI_READ_MAX_BLOCK;
442 ccb[0] = ATAPI_CMD_READ_12;
443 ccb[1] = 0; /* reserved */
444 ccb[2] = (unsigned char) (blknr >> 24) & 0xFF; /* MSB Block */
445 ccb[3] = (unsigned char) (blknr >> 16) & 0xFF; /* */
446 ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
447 ccb[5] = (unsigned char) blknr & 0xFF; /* LSB Block */
448 ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
449 ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
450 ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
451 ccb[9] = (unsigned char) cnt & 0xFF; /* LSB Block */
452 ccb[10] = 0; /* reserved */
453 ccb[11] = 0; /* reserved */
455 if (atapi_issue_autoreq(device, ccb, 12,
456 (unsigned char *)buffer,
457 cnt * ATAPI_READ_BLOCK_SIZE)
464 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
465 } while (blkcnt > 0);
471 static void atapi_inquiry(struct blk_desc *dev_desc)
473 unsigned char ccb[12]; /* Command descriptor block */
474 unsigned char iobuf[64]; /* temp buf */
478 device = dev_desc->devnum;
479 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
481 memset(ccb, 0, sizeof(ccb));
482 memset(iobuf, 0, sizeof(iobuf));
484 ccb[0] = ATAPI_CMD_INQUIRY;
485 ccb[4] = 40; /* allocation Legnth */
486 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 40);
488 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
492 /* copy device ident strings */
493 ident_cpy((unsigned char *)dev_desc->vendor, &iobuf[8], 8);
494 ident_cpy((unsigned char *)dev_desc->product, &iobuf[16], 16);
495 ident_cpy((unsigned char *)dev_desc->revision, &iobuf[32], 5);
500 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
501 dev_desc->type = iobuf[0] & 0x1f;
503 if ((iobuf[1] & 0x80) == 0x80)
504 dev_desc->removable = 1;
506 dev_desc->removable = 0;
508 memset(ccb, 0, sizeof(ccb));
509 memset(iobuf, 0, sizeof(iobuf));
510 ccb[0] = ATAPI_CMD_START_STOP;
511 ccb[4] = 0x03; /* start */
513 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
515 debug("ATAPI_CMD_START_STOP returned %x\n", c);
519 memset(ccb, 0, sizeof(ccb));
520 memset(iobuf, 0, sizeof(iobuf));
521 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 0);
523 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
527 memset(ccb, 0, sizeof(ccb));
528 memset(iobuf, 0, sizeof(iobuf));
529 ccb[0] = ATAPI_CMD_READ_CAP;
530 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *)iobuf, 8);
531 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
535 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
536 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
537 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
539 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
540 ((unsigned long) iobuf[1] << 16) +
541 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
542 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
543 ((unsigned long) iobuf[5] << 16) +
544 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
545 dev_desc->log2blksz = LOG2(dev_desc->blksz);
547 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
553 #endif /* CONFIG_ATAPI */
555 static void ide_ident(struct blk_desc *dev_desc)
560 bool is_atapi = false;
565 device = dev_desc->devnum;
566 printf(" Device %d: ", device);
570 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
571 dev_desc->uclass_id = UCLASS_IDE;
576 /* Warning: This will be tricky to read */
577 while (retries <= 1) {
578 /* check signature */
579 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
580 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
581 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
582 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
583 /* ATAPI Signature found */
586 * Start Ident Command
588 ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATAPI);
590 * Wait for completion - ATAPI devices need more time
593 c = ide_wait(device, ATAPI_TIME_OUT);
598 * Start Ident Command
600 ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATA);
603 * Wait for completion
605 c = ide_wait(device, IDE_TIME_OUT);
608 if (((c & ATA_STAT_DRQ) == 0) ||
609 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
613 * Need to soft reset the device
614 * in case it's an ATAPI...
616 debug("Retrying...\n");
617 ide_outb(device, ATA_DEV_HD,
618 ATA_LBA | ATA_DEVICE(device));
620 ide_outb(device, ATA_COMMAND, 0x08);
626 ide_outb(device, ATA_DEV_HD,
627 ATA_LBA | ATA_DEVICE(device));
636 } /* see above - ugly to read */
638 if (retries == 2) /* Not found */
642 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
644 ident_cpy((unsigned char *)dev_desc->revision, iop.fw_rev,
645 sizeof(dev_desc->revision));
646 ident_cpy((unsigned char *)dev_desc->vendor, iop.model,
647 sizeof(dev_desc->vendor));
648 ident_cpy((unsigned char *)dev_desc->product, iop.serial_no,
649 sizeof(dev_desc->product));
651 if ((iop.config & 0x0080) == 0x0080)
652 dev_desc->removable = 1;
654 dev_desc->removable = 0;
658 dev_desc->atapi = true;
659 atapi_inquiry(dev_desc);
662 #endif /* CONFIG_ATAPI */
664 iop.lba_capacity[0] = be16_to_cpu(iop.lba_capacity[0]);
665 iop.lba_capacity[1] = be16_to_cpu(iop.lba_capacity[1]);
667 ((unsigned long)iop.lba_capacity[0]) |
668 ((unsigned long)iop.lba_capacity[1] << 16);
671 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
673 for (int i = 0; i < 4; i++)
674 iop.lba48_capacity[i] = be16_to_cpu(iop.lba48_capacity[i]);
676 ((unsigned long long)iop.lba48_capacity[0] |
677 ((unsigned long long)iop.lba48_capacity[1] << 16) |
678 ((unsigned long long)iop.lba48_capacity[2] << 32) |
679 ((unsigned long long)iop.lba48_capacity[3] << 48));
683 #endif /* CONFIG_LBA48 */
685 dev_desc->type = DEV_TYPE_HARDDISK;
686 dev_desc->blksz = ATA_BLOCKSIZE;
687 dev_desc->log2blksz = LOG2(dev_desc->blksz);
688 dev_desc->lun = 0; /* just to fill something in... */
690 #if 0 /* only used to test the powersaving mode,
691 * if enabled, the drive goes after 5 sec
693 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
694 c = ide_wait(device, IDE_TIME_OUT);
695 ide_outb(device, ATA_SECT_CNT, 1);
696 ide_outb(device, ATA_LBA_LOW, 0);
697 ide_outb(device, ATA_LBA_MID, 0);
698 ide_outb(device, ATA_LBA_HIGH, 0);
699 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
700 ide_outb(device, ATA_COMMAND, 0xe3);
702 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
706 static void ide_init(void)
713 /* ATAPI Drives seems to need a proper IDE Reset */
717 * Wait for IDE to get ready.
718 * According to spec, this can take up to 31 seconds!
720 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
722 bus * (CONFIG_SYS_IDE_MAXDEVICE /
723 CONFIG_SYS_IDE_MAXBUS);
725 printf("Bus %d: ", bus);
731 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
737 c = ide_inb(dev, ATA_STATUS);
739 if (i > (ATA_RESET_TIME * 100)) {
740 puts("** Timeout **\n");
743 if ((i >= 100) && ((i % 100) == 0))
746 } while (c & ATA_STAT_BUSY);
748 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
749 puts("not available ");
750 debug("Status = 0x%02X ", c);
751 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
752 } else if ((c & ATA_STAT_READY) == 0) {
753 puts("not available ");
754 debug("Status = 0x%02X ", c);
765 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
766 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
767 ide_dev_desc[i].uclass_id = UCLASS_IDE;
768 ide_dev_desc[i].devnum = i;
769 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
770 ide_dev_desc[i].blksz = 0;
771 ide_dev_desc[i].log2blksz =
772 LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
773 ide_dev_desc[i].lba = 0;
774 if (!ide_bus_ok[IDE_BUS(i)])
776 ide_ident(&ide_dev_desc[i]);
777 dev_print(&ide_dev_desc[i]);
782 static void ide_output_data(int dev, const ulong *sect_buf, int words)
784 uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
787 dbuf = (ushort *)sect_buf;
790 outw(cpu_to_le16(*dbuf++), paddr);
792 outw(cpu_to_le16(*dbuf++), paddr);
796 static void ide_input_data(int dev, ulong *sect_buf, int words)
798 uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
801 dbuf = (ushort *)sect_buf;
803 debug("in input data base for read is %p\n", (void *)paddr);
807 *dbuf++ = le16_to_cpu(inw(paddr));
809 *dbuf++ = le16_to_cpu(inw(paddr));
813 ulong ide_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
816 struct blk_desc *block_dev = dev_get_uclass_plat(dev);
817 int device = block_dev->devnum;
820 unsigned char pwrsave = 0; /* power save */
823 unsigned char lba48 = 0;
825 if (blknr & 0x0000fffff0000000ULL) {
826 /* more than 28 bits used, use 48bit mode */
830 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
831 device, blknr, blkcnt, (ulong) buffer);
835 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
836 c = ide_wait(device, IDE_TIME_OUT);
838 if (c & ATA_STAT_BUSY) {
839 printf("IDE read: device %d not ready\n", device);
843 /* first check if the drive is in Powersaving mode, if yes,
844 * increase the timeout value */
845 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_POWER);
848 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
850 if (c & ATA_STAT_BUSY) {
851 printf("IDE read: device %d not ready\n", device);
854 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
855 printf("No Powersaving mode %X\n", c);
857 c = ide_inb(device, ATA_SECT_CNT);
858 debug("Powersaving %02X\n", c);
864 while (blkcnt-- > 0) {
865 c = ide_wait(device, IDE_TIME_OUT);
867 if (c & ATA_STAT_BUSY) {
868 printf("IDE read: device %d not ready\n", device);
873 /* write high bits */
874 ide_outb(device, ATA_SECT_CNT, 0);
875 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
876 #ifdef CONFIG_SYS_64BIT_LBA
877 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
878 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
880 ide_outb(device, ATA_LBA_MID, 0);
881 ide_outb(device, ATA_LBA_HIGH, 0);
885 ide_outb(device, ATA_SECT_CNT, 1);
886 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
887 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
888 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
892 ide_outb(device, ATA_DEV_HD,
893 ATA_LBA | ATA_DEVICE(device));
894 ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ_EXT);
899 ide_outb(device, ATA_DEV_HD, ATA_LBA |
900 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
901 ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ);
907 /* may take up to 4 sec */
908 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
911 /* can't take over 500 ms */
912 c = ide_wait(device, IDE_TIME_OUT);
915 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
917 printf("Error (no IRQ) dev %d blk " LBAF
918 ": status %#02x\n", device, blknr, c);
922 ide_input_data(device, buffer, ATA_SECTORWORDS);
923 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
927 buffer += ATA_BLOCKSIZE;
933 ulong ide_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
936 struct blk_desc *block_dev = dev_get_uclass_plat(dev);
937 int device = block_dev->devnum;
942 unsigned char lba48 = 0;
944 if (blknr & 0x0000fffff0000000ULL) {
945 /* more than 28 bits used, use 48bit mode */
952 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
954 while (blkcnt-- > 0) {
955 c = ide_wait(device, IDE_TIME_OUT);
957 if (c & ATA_STAT_BUSY) {
958 printf("IDE read: device %d not ready\n", device);
963 /* write high bits */
964 ide_outb(device, ATA_SECT_CNT, 0);
965 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
966 #ifdef CONFIG_SYS_64BIT_LBA
967 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
968 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
970 ide_outb(device, ATA_LBA_MID, 0);
971 ide_outb(device, ATA_LBA_HIGH, 0);
975 ide_outb(device, ATA_SECT_CNT, 1);
976 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
977 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
978 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
982 ide_outb(device, ATA_DEV_HD,
983 ATA_LBA | ATA_DEVICE(device));
984 ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE_EXT);
989 ide_outb(device, ATA_DEV_HD, ATA_LBA |
990 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
991 ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE);
996 /* can't take over 500 ms */
997 c = ide_wait(device, IDE_TIME_OUT);
999 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1001 printf("Error (no IRQ) dev %d blk " LBAF
1002 ": status %#02x\n", device, blknr, c);
1006 ide_output_data(device, buffer, ATA_SECTORWORDS);
1007 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
1010 buffer += ATA_BLOCKSIZE;
1016 ulong ide_or_atapi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
1019 struct blk_desc *desc = dev_get_uclass_plat(dev);
1021 if (IS_ENABLED(CONFIG_ATAPI) && desc->atapi)
1022 return atapi_read(dev, blknr, blkcnt, buffer);
1024 return ide_read(dev, blknr, blkcnt, buffer);
1027 static int ide_blk_probe(struct udevice *udev)
1029 struct blk_desc *desc = dev_get_uclass_plat(udev);
1031 /* fill in device vendor/product/rev strings */
1032 strncpy(desc->vendor, ide_dev_desc[desc->devnum].vendor,
1034 desc->vendor[BLK_VEN_SIZE] = '\0';
1035 strncpy(desc->product, ide_dev_desc[desc->devnum].product,
1037 desc->product[BLK_PRD_SIZE] = '\0';
1038 strncpy(desc->revision, ide_dev_desc[desc->devnum].revision,
1040 desc->revision[BLK_REV_SIZE] = '\0';
1045 static const struct blk_ops ide_blk_ops = {
1046 .read = ide_or_atapi_read,
1050 U_BOOT_DRIVER(ide_blk) = {
1053 .ops = &ide_blk_ops,
1054 .probe = ide_blk_probe,
1057 static int ide_bootdev_bind(struct udevice *dev)
1059 struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
1061 ucp->prio = BOOTDEVP_5_SCAN_SLOW;
1066 static int ide_bootdev_hunt(struct bootdev_hunter *info, bool show)
1068 struct udevice *dev;
1070 uclass_first_device(UCLASS_IDE, &dev);
1075 struct bootdev_ops ide_bootdev_ops = {
1078 static const struct udevice_id ide_bootdev_ids[] = {
1079 { .compatible = "u-boot,bootdev-ide" },
1083 U_BOOT_DRIVER(ide_bootdev) = {
1084 .name = "ide_bootdev",
1085 .id = UCLASS_BOOTDEV,
1086 .ops = &ide_bootdev_ops,
1087 .bind = ide_bootdev_bind,
1088 .of_match = ide_bootdev_ids,
1091 BOOTDEV_HUNTER(ide_bootdev_hunter) = {
1092 .prio = BOOTDEVP_5_SCAN_SLOW,
1093 .uclass = UCLASS_IDE,
1094 .hunt = ide_bootdev_hunt,
1095 .drv = DM_DRIVER_REF(ide_bootdev),
1098 static int ide_probe(struct udevice *udev)
1100 struct udevice *blk_dev;
1109 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; i++) {
1110 if (ide_dev_desc[i].type != DEV_TYPE_UNKNOWN) {
1111 sprintf(name, "blk#%d", i);
1113 blksz = ide_dev_desc[i].blksz;
1114 size = blksz * ide_dev_desc[i].lba;
1117 * With CDROM, if there is no CD inserted, blksz will
1118 * be zero, don't bother to create IDE block device.
1122 ret = blk_create_devicef(udev, "ide_blk", name,
1124 blksz, size, &blk_dev);
1128 ret = blk_probe_or_unbind(blk_dev);
1132 ret = bootdev_setup_for_dev(udev, "ide_bootdev");
1134 return log_msg_ret("bootdev", ret);
1141 U_BOOT_DRIVER(ide) = {
1147 struct pci_device_id ide_supported[] = {
1148 { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_IDE << 8, 0xffff00) },
1152 U_BOOT_PCI_DEVICE(ide, ide_supported);
1154 UCLASS_DRIVER(ide) = {