nand/raw/mxc_nand.c

342 static int mxc_nand_dev_ready(struct mtd_info *mtd)  argument
351 static void _mxc_nand_enable_hwecc(struct mtd_info *mtd, int on)  argument
353 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
375 static void mxc_nand_enable_hwecc(struct mtd_info *mtd, int mode)  argument
384 static int mxc_nand_read_oob_syndrome(struct mtd_info *mtd,  argument
390 	int length = mtd->oobsize;
398 	chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, page);
402 			chip->read_buf(mtd, bufpoi, toread);
412 			chip->read_buf(mtd, bufpoi, toread);
418 		chip->read_buf(mtd, bufpoi, length);
420 	_mxc_nand_enable_hwecc(mtd, 0);
421 	chip->cmdfunc(mtd, NAND_CMD_READOOB,
422 			mtd->writesize + chip->ecc.prepad, page);
424 	length = mtd->oobsize - chip->ecc.prepad;
427 		chip->read_buf(mtd, bufpoi, toread);
432 	_mxc_nand_enable_hwecc(mtd, 1);
436 static int mxc_nand_read_page_raw_syndrome(struct mtd_info *mtd,  argument
450 	_mxc_nand_enable_hwecc(mtd, 0);
451 	chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
455 		chip->read_buf(mtd, buf, eccsize);
458 		host->col_addr = mtd->writesize + n * eccpitch;
460 			chip->read_buf(mtd, oob, chip->ecc.prepad);
464 		chip->read_buf(mtd, oob, eccbytes);
468 			chip->read_buf(mtd, oob, chip->ecc.postpad);
473 	size = mtd->oobsize - (oob - chip->oob_poi);
475 		chip->read_buf(mtd, oob, size);
476 	_mxc_nand_enable_hwecc(mtd, 1);
481 static int mxc_nand_read_page_syndrome(struct mtd_info *mtd,  argument
504 		chip->read_buf(mtd, p, eccsize);
506 		host->col_addr = mtd->writesize + n * eccpitch;
509 			chip->read_buf(mtd, oob, chip->ecc.prepad);
513 		stat = chip->ecc.correct(mtd, p, oob, NULL);
516 			mtd->ecc_stats.failed++;
518 			mtd->ecc_stats.corrected += stat;
522 			chip->read_buf(mtd, oob, chip->ecc.postpad);
528 	n = mtd->oobsize - (oob - chip->oob_poi);
530 		chip->read_buf(mtd, oob, n);
533 	_mxc_nand_enable_hwecc(mtd, 0);
534 	chip->cmdfunc(mtd, NAND_CMD_READOOB, mtd->writesize, page);
538 		host->col_addr = mtd->writesize +
541 		chip->read_buf(mtd, oob, eccbytes);
544 	_mxc_nand_enable_hwecc(mtd, 1);
548 static int mxc_nand_write_oob_syndrome(struct mtd_info *mtd,  argument
553 	int length = mtd->oobsize;
557 	chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
561 		chip->write_buf(mtd, bufpoi, len);
567 		chip->write_buf(mtd, bufpoi, length);
569 	chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
570 	status = chip->waitfunc(mtd, chip);
574 static int mxc_nand_write_page_raw_syndrome(struct mtd_info *mtd,  argument
589 		chip->write_buf(mtd, buf, eccsize);
592 		host->col_addr = mtd->writesize + n * eccpitch;
595 			chip->write_buf(mtd, oob, chip->ecc.prepad);
603 			chip->write_buf(mtd, oob, chip->ecc.postpad);
608 	size = mtd->oobsize - (oob - chip->oob_poi);
610 		chip->write_buf(mtd, oob, size);
614 static int mxc_nand_write_page_syndrome(struct mtd_info *mtd,  argument
627 	chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
634 		chip->write_buf(mtd, p, eccsize);
636 		host->col_addr = mtd->writesize + n * eccpitch;
639 			chip->write_buf(mtd, oob, chip->ecc.prepad);
643 		chip->write_buf(mtd, oob, eccbytes);
647 			chip->write_buf(mtd, oob, chip->ecc.postpad);
653 	i = mtd->oobsize - (oob - chip->oob_poi);
655 		chip->write_buf(mtd, oob, i);
659 static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat,  argument
662 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
665 	int subpages = mtd->writesize / nand_chip->subpagesize;
679 				       mtd->writesize / nand_chip->subpagesize
698 static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat,  argument
701 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
720 static int mxc_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,  argument
727 static u_char mxc_nand_read_byte(struct mtd_info *mtd)  argument
729 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
767 static uint16_t mxc_nand_read_word(struct mtd_info *mtd)  argument
769 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
778 	if (col < mtd->writesize && host->spare_only)
779 		col += mtd->writesize;
781 	if (col < mtd->writesize) {
786 				((col - mtd->writesize) >> 1));
817 static void mxc_nand_write_buf(struct mtd_info *mtd,  argument
820 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
830 	if (col < mtd->writesize && host->spare_only)
831 		col += mtd->writesize;
833 	n = mtd->writesize + mtd->oobsize - col;
841 		if (col < mtd->writesize) {
845 						mtd->writesize + (col & ~3);
864 			int m = mtd->writesize - col;
866 			if (col >= mtd->writesize)
867 				m += mtd->oobsize;
889 static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)  argument
891 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
901 	if (col < mtd->writesize && host->spare_only)
902 		col += mtd->writesize;
904 	n = mtd->writesize + mtd->oobsize - col;
910 		if (col < mtd->writesize) {
914 					mtd->writesize + (col & ~3);
928 			int m = mtd->writesize - col;
930 			if (col >= mtd->writesize)
931 				m += mtd->oobsize;
949 static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)  argument
951 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
975 void mxc_nand_command(struct mtd_info *mtd, unsigned command,  argument
978 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
1009 		if (column >= mtd->writesize) {
1019 				mxc_nand_command(mtd, NAND_CMD_READ0, 0,
1023 			host->col_addr = column - mtd->writesize;
1147 	struct mtd_info *mtd;  local
1159 	mtd = &this->mtd;
1207 	_mxc_nand_enable_hwecc(mtd, 1);
1211 	_mxc_nand_enable_hwecc(mtd, 0);
1214 	this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);