179 lines
3.9 KiB
C
179 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2022-2025 ArtInChip
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*
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* Authors:
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* keliang.liu <keliang.liu@artinchip.com>
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*/
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#ifndef __UBOOT__
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#include <malloc.h>
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#include <linux/device.h>
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#include <linux/kernel.h>
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#endif
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#include <linux/bitops.h>
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#include <linux/mtd/spinand.h>
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#define SPINAND_MFR_XTX 0x0B
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#define XTX_STATUS_ECC_MASK (0xF << 4)
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#define XTX_STATUS_ECC_NO_BITFLIPS (0 << 4)
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#define XTX_STATUS_ECC_UNCOR_ERROR (0xF << 4)
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
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static SPINAND_OP_VARIANTS(write_cache_variants,
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SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
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SPINAND_PROG_LOAD(true, 0, NULL, 0));
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static SPINAND_OP_VARIANTS(update_cache_variants,
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SPINAND_PROG_LOAD(false, 0, NULL, 0));
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static int xt26xxxg_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = mtd->oobsize / 2;
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region->length = mtd->oobsize / 2 - 12;
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return 0;
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}
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static int xt26xxxg_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = 2;
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region->length = mtd->oobsize / 2 - 2;
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return 0;
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}
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static const struct mtd_ooblayout_ops xt26xxxg_ooblayout = {
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.ecc = xt26xxxg_ooblayout_ecc,
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.rfree = xt26xxxg_ooblayout_free,
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};
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static int xt26xxxg04c_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = mtd->oobsize / 2;
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region->length = mtd->oobsize / 2 - 24;
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return 0;
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}
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static int xt26xxxg04c_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = 2;
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region->length = mtd->oobsize / 2 - 2;
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return 0;
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}
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static const struct mtd_ooblayout_ops xt26xxxg04c_ooblayout = {
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.ecc = xt26xxxg04c_ooblayout_ecc,
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.rfree = xt26xxxg04c_ooblayout_free,
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};
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static int xtx_ecc_get_status(struct spinand_device *spinand,
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u8 status)
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{
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switch (status & XTX_STATUS_ECC_MASK) {
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case XTX_STATUS_ECC_NO_BITFLIPS:
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return 0;
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case XTX_STATUS_ECC_UNCOR_ERROR:
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return -EBADMSG;
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case (1 << 4):
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case (2 << 4):
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case (3 << 4):
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case (4 << 4):
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case (5 << 4):
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case (6 << 4):
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case (7 << 4):
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case (8 << 4):
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return ((status & XTX_STATUS_ECC_MASK) >> 4);
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default:
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break;
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}
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return -EINVAL;
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}
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static const struct spinand_info xtx_spinand_table[] = {
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SPINAND_INFO("XT26G01C",
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SPINAND_ID(0x11),
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NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
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NAND_ECCREQ(8, 528),
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SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
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&write_cache_variants,
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&update_cache_variants),
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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&xt26xxxg_ooblayout, xtx_ecc_get_status)),
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SPINAND_INFO("XT26G04C",
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SPINAND_ID(0x13),
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NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
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NAND_ECCREQ(8, 528),
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SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
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&write_cache_variants,
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&update_cache_variants),
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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&xt26xxxg04c_ooblayout, xtx_ecc_get_status)),
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};
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static int xtx_spinand_init(struct spinand_device *spinand)
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{
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return 0;
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}
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static void xtx_spinand_cleanup(struct spinand_device *spinand)
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{
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}
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static int xtx_spinand_detect(struct spinand_device *spinand)
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{
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u8 *id = spinand->id.data;
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int ret;
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if (id[1] != SPINAND_MFR_XTX)
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return 0;
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ret = spinand_match_and_init(spinand, xtx_spinand_table,
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ARRAY_SIZE(xtx_spinand_table),
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&id[2]);
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if (ret)
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return ret;
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return 1;
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}
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static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = {
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.detect = xtx_spinand_detect,
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.init = xtx_spinand_init,
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.cleanup = xtx_spinand_cleanup};
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const struct spinand_manufacturer xtx_spinand_manufacturer = {
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.id = SPINAND_MFR_XTX,
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.name = "xtx",
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.ops = &xtx_spinand_manuf_ops,
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};
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