mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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d81ad9d78e
These macros had initially no frequency field. When I added the "maximum operation frequency" field, I did it initially on very common macros and I decided to add an optional field for that (with VA_ARGS) in order to prevent massively unreadable changes. I then added new variants in the spinand.h header, and requested a frequency field for them by default. Some times later, I also added maximum frequencies to other existing variants, but I did it incorrectly, without noticing I was wrong because the field was optional. This mix is error prone, so let's do what I should have done since the very beginning: add a frequency field to all READ_FROM_CACHE variants. There is no functional change. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2024 SkyHigh Memory Limited
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*
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* Author: Takahiro Kuwano <takahiro.kuwano@infineon.com>
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* Co-Author: KR Kim <kr.kim@skyhighmemory.com>
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/mtd/spinand.h>
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#define SPINAND_MFR_SKYHIGH 0x01
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#define SKYHIGH_STATUS_ECC_1TO2_BITFLIPS (1 << 4)
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#define SKYHIGH_STATUS_ECC_3TO6_BITFLIPS (2 << 4)
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#define SKYHIGH_STATUS_ECC_UNCOR_ERROR (3 << 4)
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#define SKYHIGH_CONFIG_PROTECT_EN BIT(1)
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 4, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 2, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));
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static SPINAND_OP_VARIANTS(write_cache_variants,
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SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),
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SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));
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static SPINAND_OP_VARIANTS(update_cache_variants,
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SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
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SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
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static int skyhigh_spinand_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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/* ECC bytes are stored in hidden area. */
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return -ERANGE;
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}
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static int skyhigh_spinand_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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/* ECC bytes are stored in hidden area. Reserve 2 bytes for the BBM. */
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region->offset = 2;
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region->length = mtd->oobsize - 2;
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return 0;
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}
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static const struct mtd_ooblayout_ops skyhigh_spinand_ooblayout = {
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.ecc = skyhigh_spinand_ooblayout_ecc,
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.free = skyhigh_spinand_ooblayout_free,
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};
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static int skyhigh_spinand_ecc_get_status(struct spinand_device *spinand,
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u8 status)
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{
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switch (status & STATUS_ECC_MASK) {
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case STATUS_ECC_NO_BITFLIPS:
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return 0;
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case SKYHIGH_STATUS_ECC_UNCOR_ERROR:
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return -EBADMSG;
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case SKYHIGH_STATUS_ECC_1TO2_BITFLIPS:
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return 2;
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case SKYHIGH_STATUS_ECC_3TO6_BITFLIPS:
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return 6;
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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 skyhigh_spinand_table[] = {
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SPINAND_INFO("S35ML01G301",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(6, 32),
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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_NO_RAW_ACCESS,
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SPINAND_ECCINFO(&skyhigh_spinand_ooblayout,
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skyhigh_spinand_ecc_get_status)),
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SPINAND_INFO("S35ML01G300",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14),
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NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(6, 32),
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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_NO_RAW_ACCESS,
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SPINAND_ECCINFO(&skyhigh_spinand_ooblayout,
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skyhigh_spinand_ecc_get_status)),
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SPINAND_INFO("S35ML02G300",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25),
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NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
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NAND_ECCREQ(6, 32),
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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_NO_RAW_ACCESS,
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SPINAND_ECCINFO(&skyhigh_spinand_ooblayout,
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skyhigh_spinand_ecc_get_status)),
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SPINAND_INFO("S35ML04G300",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35),
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NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 2, 1, 1),
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NAND_ECCREQ(6, 32),
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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_NO_RAW_ACCESS,
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SPINAND_ECCINFO(&skyhigh_spinand_ooblayout,
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skyhigh_spinand_ecc_get_status)),
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};
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static int skyhigh_spinand_init(struct spinand_device *spinand)
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{
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/*
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* Config_Protect_En (bit 1 in Block Lock register) must be set to 1
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* before writing other bits. Do it here before core unlocks all blocks
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* by writing block protection bits.
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*/
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return spinand_write_reg_op(spinand, REG_BLOCK_LOCK,
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SKYHIGH_CONFIG_PROTECT_EN);
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}
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static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = {
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.init = skyhigh_spinand_init,
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};
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const struct spinand_manufacturer skyhigh_spinand_manufacturer = {
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.id = SPINAND_MFR_SKYHIGH,
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.name = "SkyHigh",
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.chips = skyhigh_spinand_table,
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.nchips = ARRAY_SIZE(skyhigh_spinand_table),
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.ops = &skyhigh_spinand_manuf_ops,
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};
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