nand/raw/mxc_nand.c

384 				      struct nand_chip *chip,  argument
387 	struct mxc_nand_host *host = nand_get_controller_data(chip);
388 	uint8_t *buf = chip->oob_poi;
390 	int eccpitch = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
397 	chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, page);
398 	for (i = 0; i < chip->ecc.steps; i++) {
399 		toread = min_t(int, length, chip->ecc.prepad);
401 			chip->read_buf(mtd, bufpoi, toread);
405 		bufpoi += chip->ecc.bytes;
406 		host->col_addr += chip->ecc.bytes;
407 		length -= chip->ecc.bytes;
409 		toread = min_t(int, length, chip->ecc.postpad);
411 			chip->read_buf(mtd, bufpoi, toread);
417 		chip->read_buf(mtd, bufpoi, length);
420 	chip->cmdfunc(mtd, NAND_CMD_READOOB,
421 			mtd->writesize + chip->ecc.prepad, page);
422 	bufpoi = buf + chip->ecc.prepad;
423 	length = mtd->oobsize - chip->ecc.prepad;
424 	for (i = 0; i < chip->ecc.steps; i++) {
425 		toread = min_t(int, length, chip->ecc.bytes);
426 		chip->read_buf(mtd, bufpoi, toread);
429 		host->col_addr += chip->ecc.postpad + chip->ecc.prepad;
436 					   struct nand_chip *chip,  argument
441 	struct mxc_nand_host *host = nand_get_controller_data(chip);
442 	int eccsize = chip->ecc.size;
443 	int eccbytes = chip->ecc.bytes;
444 	int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
445 	uint8_t *oob = chip->oob_poi;
450 	chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
452 	for (n = 0, steps = chip->ecc.steps; steps > 0; n++, steps--) {
454 		chip->read_buf(mtd, buf, eccsize);
458 		if (chip->ecc.prepad) {
459 			chip->read_buf(mtd, oob, chip->ecc.prepad);
460 			oob += chip->ecc.prepad;
463 		chip->read_buf(mtd, oob, eccbytes);
466 		if (chip->ecc.postpad) {
467 			chip->read_buf(mtd, oob, chip->ecc.postpad);
468 			oob += chip->ecc.postpad;
472 	size = mtd->oobsize - (oob - chip->oob_poi);
474 		chip->read_buf(mtd, oob, size);
481 				       struct nand_chip *chip,  argument
486 	struct mxc_nand_host *host = nand_get_controller_data(chip);
487 	int n, eccsize = chip->ecc.size;
488 	int eccbytes = chip->ecc.bytes;
489 	int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
490 	int eccsteps = chip->ecc.steps;
492 	uint8_t *oob = chip->oob_poi;
503 		chip->read_buf(mtd, p, eccsize);
507 		if (chip->ecc.prepad) {
508 			chip->read_buf(mtd, oob, chip->ecc.prepad);
509 			oob += chip->ecc.prepad;
512 		stat = chip->ecc.correct(mtd, p, oob, NULL);
520 		if (chip->ecc.postpad) {
521 			chip->read_buf(mtd, oob, chip->ecc.postpad);
522 			oob += chip->ecc.postpad;
527 	n = mtd->oobsize - (oob - chip->oob_poi);
529 		chip->read_buf(mtd, oob, n);
533 	chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, page);
534 	eccsteps = chip->ecc.steps;
535 	oob = chip->oob_poi + chip->ecc.prepad;
539 				 chip->ecc.prepad;
540 		chip->read_buf(mtd, oob, eccbytes);
541 		oob += eccbytes + chip->ecc.postpad;
548 				       struct nand_chip *chip, int page)  argument
550 	struct mxc_nand_host *host = nand_get_controller_data(chip);
551 	int eccpitch = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
553 	int i, len, status, steps = chip->ecc.steps;
554 	const uint8_t *bufpoi = chip->oob_poi;
556 	chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
560 		chip->write_buf(mtd, bufpoi, len);
563 		host->col_addr += chip->ecc.prepad + chip->ecc.postpad;
566 		chip->write_buf(mtd, bufpoi, length);
568 	chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
569 	status = chip->waitfunc(mtd, chip);
574 					     struct nand_chip *chip,  argument
578 	struct mxc_nand_host *host = nand_get_controller_data(chip);
579 	int eccsize = chip->ecc.size;
580 	int eccbytes = chip->ecc.bytes;
581 	int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
582 	uint8_t *oob = chip->oob_poi;
586 	for (n = 0, steps = chip->ecc.steps; steps > 0; n++, steps--) {
588 		chip->write_buf(mtd, buf, eccsize);
593 		if (chip->ecc.prepad) {
594 			chip->write_buf(mtd, oob, chip->ecc.prepad);
595 			oob += chip->ecc.prepad;
601 		if (chip->ecc.postpad) {
602 			chip->write_buf(mtd, oob, chip->ecc.postpad);
603 			oob += chip->ecc.postpad;
607 	size = mtd->oobsize - (oob - chip->oob_poi);
609 		chip->write_buf(mtd, oob, size);
614 					 struct nand_chip *chip,  argument
618 	struct mxc_nand_host *host = nand_get_controller_data(chip);
619 	int i, n, eccsize = chip->ecc.size;
620 	int eccbytes = chip->ecc.bytes;
621 	int eccpitch = eccbytes + chip->ecc.prepad + chip->ecc.postpad;
622 	int eccsteps = chip->ecc.steps;
624 	uint8_t *oob = chip->oob_poi;
626 	chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
633 		chip->write_buf(mtd, p, eccsize);
637 		if (chip->ecc.prepad) {
638 			chip->write_buf(mtd, oob, chip->ecc.prepad);
639 			oob += chip->ecc.prepad;
642 		chip->write_buf(mtd, oob, eccbytes);
645 		if (chip->ecc.postpad) {
646 			chip->write_buf(mtd, oob, chip->ecc.postpad);
647 			oob += chip->ecc.postpad;
652 	i = mtd->oobsize - (oob - chip->oob_poi);
654 		chip->write_buf(mtd, oob, i);
946  * deselect of the NAND chip
948 static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)  argument
953 	switch (chip) {
1255 	 * This might be NAND chip specific and the i.MX31 datasheet is