nand/raw/nand_base.c

382  * nand_fill_oob - [INTERN] Transfer client buffer to oob
384  * @oob: oob data buffer
385  * @len: oob data write length
386  * @ops: oob ops structure
388 static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len,
404 		memcpy(chip->oob_poi + ops->ooboffs, oob, len);
405 		return oob + len;
408 		ret = mtd_ooblayout_set_databytes(mtd, oob, chip->oob_poi,
411 		return oob + len;
423  * @ops: oob operation description structure
2932  * Not for syndrome calculating ECC controllers, which use a special oob layout.
3003  * We need a special oob layout and handling even when OOB isn't used.
3011 	uint8_t *oob = chip->oob_poi;
3026 			ret = nand_read_data_op(chip, oob, chip->ecc.prepad,
3031 			oob += chip->ecc.prepad;
3034 		ret = nand_read_data_op(chip, oob, eccbytes, false, false);
3038 		oob += eccbytes;
3041 			ret = nand_read_data_op(chip, oob, chip->ecc.postpad,
3046 			oob += chip->ecc.postpad;
3050 	size = mtd->oobsize - (oob - chip->oob_poi);
3052 		ret = nand_read_data_op(chip, oob, size, false, false);
3224  * Not for syndrome calculating ECC controllers which need a special oob layout.
3363  * need a special oob layout and handling.
3374 	uint8_t *oob = chip->oob_poi;
3391 			ret = nand_read_data_op(chip, oob, chip->ecc.prepad,
3396 			oob += chip->ecc.prepad;
3401 		ret = nand_read_data_op(chip, oob, eccbytes, false, false);
3405 		stat = chip->ecc.correct(chip, p, oob, NULL);
3407 		oob += eccbytes;
3410 			ret = nand_read_data_op(chip, oob, chip->ecc.postpad,
3415 			oob += chip->ecc.postpad;
3422 							   oob - eccpadbytes,
3436 	/* Calculate remaining oob bytes */
3437 	i = mtd->oobsize - (oob - chip->oob_poi);
3439 		ret = nand_read_data_op(chip, oob, i, false, false);
3448  * nand_transfer_oob - [INTERN] Transfer oob to client buffer
3450  * @oob: oob destination address
3451  * @ops: oob ops structure
3452  * @len: size of oob to transfer
3454 static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
3464 		memcpy(oob, chip->oob_poi + ops->ooboffs, len);
3465 		return oob + len;
3468 		ret = mtd_ooblayout_get_databytes(mtd, oob, chip->oob_poi,
3471 		return oob + len;
3561  * @ops: oob ops structure
3575 	uint8_t *bufpoi, *oob, *buf;
3594 	oob = ops->oobbuf;
3595 	oob_required = oob ? 1 : 0;
3616 		if (realpage != chip->pagecache.page || oob) {
3633 				 !oob)
3651 				if (!NAND_HAS_SUBPAGE_READ(chip) && !oob &&
3663 			if (unlikely(oob)) {
3667 					oob = nand_transfer_oob(chip, oob, ops,
3735 	if (oob)
3843 	 * data-ecc-data-ecc ... ecc-oob
3845 	 * data-pad-ecc-pad-data-pad .... ecc-pad-oob
3905  * @ops: oob operations description structure
3987  * @ops: oob operation description structure
4047  * Not for syndrome calculating ECC controllers, which use a special oob layout.
4113  * We need a special oob layout and handling even when ECC isn't checked.
4122 	uint8_t *oob = chip->oob_poi;
4137 			ret = nand_write_data_op(chip, oob, chip->ecc.prepad,
4142 			oob += chip->ecc.prepad;
4145 		ret = nand_write_data_op(chip, oob, eccbytes, false);
4149 		oob += eccbytes;
4152 			ret = nand_write_data_op(chip, oob, chip->ecc.postpad,
4157 			oob += chip->ecc.postpad;
4161 	size = mtd->oobsize - (oob - chip->oob_poi);
4163 		ret = nand_write_data_op(chip, oob, size, false);
4296 	/* copy calculated ECC for whole page to chip->buffer->oob */
4321  * need a special oob layout and handling.
4331 	uint8_t *oob = chip->oob_poi;
4346 			ret = nand_write_data_op(chip, oob, chip->ecc.prepad,
4351 			oob += chip->ecc.prepad;
4354 		chip->ecc.calculate(chip, p, oob);
4356 		ret = nand_write_data_op(chip, oob, eccbytes, false);
4360 		oob += eccbytes;
4363 			ret = nand_write_data_op(chip, oob, chip->ecc.postpad,
4368 			oob += chip->ecc.postpad;
4372 	/* Calculate remaining oob bytes */
4373 	i = mtd->oobsize - (oob - chip->oob_poi);
4375 		ret = nand_write_data_op(chip, oob, i, false);
4427  * @ops: oob operations description structure
4441 	uint8_t *oob = ops->oobbuf;
4444 	int oob_required = oob ? 1 : 0;
4480 	/* Don't allow multipage oob writes with offset */
4481 	if (oob && ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) {
4515 		if (unlikely(oob)) {
4517 			oob = nand_fill_oob(chip, oob, len, ops);
4548 	if (unlikely(oob))
4595  * @ops: oob operation description structure
6329 	/* Set the internal oob buffer location, just after the page data */
6364 			WARN(1, "No oob scheme defined for oobsize %d\n",