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Message-ID: <20241020132722.20565-3-SkyLake.Huang@mediatek.com>
Date: Sun, 20 Oct 2024 21:27:20 +0800
From: Sky Huang <SkyLake.Huang@...iatek.com>
To: Matthias Brugger <matthias.bgg@...il.com>, Miquel Raynal
<miquel.raynal@...tlin.com>, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, Richard Weinberger
<richard@....at>, Vignesh Raghavendra <vigneshr@...com>, Daniel Golle
<daniel@...rotopia.org>, Chia-Lin Kao <acelan.kao@...onical.com>, Mika
Westerberg <mika.westerberg@...ux.intel.com>, Cheng Ming Lin
<chengminglin@...c.com.tw>, <linux-kernel@...r.kernel.org>,
<linux-mtd@...ts.infradead.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>
CC: Steven Liu <Steven.Liu@...iatek.com>, Sky Huang
<skylake.huang@...iatek.com>
Subject: [RFC PATCH nand/next 2/4] include: mtd: Add CASN page definition and related structs.
From: "Sky Huang" <skylake.huang@...iatek.com>
This patch adds CASN page definition. You can see corresponding
table in CASN page application note referred in cover letter.
(https://github.com/mtk-openwrt/doc/blob/
main/CASN%20Page%20Introduction.pdf)
Signed-off-by: Sky Huang <skylake.huang@...iatek.com>
---
include/linux/mtd/casn.h | 191 +++++++++++++++++++++++++++++++++++++++
1 file changed, 191 insertions(+)
create mode 100644 include/linux/mtd/casn.h
diff --git a/include/linux/mtd/casn.h b/include/linux/mtd/casn.h
new file mode 100644
index 000000000000..65ebd23c17c1
--- /dev/null
+++ b/include/linux/mtd/casn.h
@@ -0,0 +1,191 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2023 - Mediatek
+ *
+ * Author: Sky Huang <SkyLake.Huang@...iatek.com>
+ */
+
+#ifndef __LINUX_MTD_CASN_H
+#define __LINUX_MTD_CASN_H
+
+#define CASN_CRC_BASE 0x4341
+#define CASN_SIGNATURE 0x4341534EU
+#define SPINAND_CASN_V1_CRC_OFS (254)
+#define CASN_PAGE_V1_COPIES (3)
+
+#define SDR_READ_1_1_1 BIT(0)
+#define SDR_READ_1_1_1_FAST BIT(1)
+#define SDR_READ_1_1_2 BIT(2)
+#define SDR_READ_1_2_2 BIT(3)
+#define SDR_READ_1_1_4 BIT(4)
+#define SDR_READ_1_4_4 BIT(5)
+#define SDR_READ_1_1_8 BIT(6)
+#define SDR_READ_1_8_8 BIT(7)
+
+#define SDR_WRITE_1_1_1 BIT(0)
+#define SDR_WRITE_1_1_4 BIT(1)
+
+#define SDR_UPDATE_1_1_1 BIT(0)
+#define SDR_UPDATE_1_1_4 BIT(1)
+
+struct op_slice {
+ u8 cmd_opcode;
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 dummy_nbytes : 4;
+ u8 addr_nbytes : 4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 addr_nbytes : 4;
+ u8 dummy_nbytes : 4;
+#endif
+};
+
+struct SPINAND_FLAGS {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 has_qe_bit : 1;
+ u8 has_cr_feat_bit : 1;
+ u8 conti_read_cap : 1;
+ u8 on_die_ecc : 1;
+ u8 legacy_ecc_status : 1;
+ u8 adv_ecc_status : 1;
+ u8 ecc_parity_readable : 1;
+ u8 ecc_alg : 1; /* ECC algorithm */
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 ecc_alg : 1; /* ECC algorithm */
+ u8 ecc_parity_readable : 1;
+ u8 adv_ecc_status : 1;
+ u8 legacy_ecc_status : 1;
+ u8 on_die_ecc : 1;
+ u8 conti_read_cap : 1;
+ u8 has_cr_feat_bit : 1;
+ u8 has_qe_bit : 1;
+#endif
+};
+
+struct ADV_ECC_STATUS {
+ u8 cmd;
+ u8 addr;
+ u8 addr_nbytes;
+ u8 addr_buswidth;
+ u8 dummy_nbytes;
+ u8 dummy_buswidth;
+ u8 status_nbytes;
+ u16 status_mask;
+ u8 pre_op; /* pre-process operator */
+ u8 pre_mask; /* pre-process mask */
+} __packed;
+
+struct CASN_OOB {
+ u8 layout_type;
+
+ /* OOB free layout */
+ u8 free_start;
+ u8 free_length;
+ u8 bbm_length;
+
+ /* ECC parity layout */
+ u8 ecc_parity_start;
+ u8 ecc_parity_space;
+ u8 ecc_parity_real_length;
+};
+
+enum oob_overall {
+ OOB_DISCRETE = 0,
+ OOB_CONTINUOUS,
+};
+
+struct nand_casn {
+ /* CASN signature must be 4 chars: 'C','A','S','N' */
+ union {
+ u8 sig[4];
+ u32 signature;
+ };
+
+ u8 version;
+ char manufacturer[13];
+ char model[16];
+
+ __be32 bits_per_cell;
+ __be32 bytes_per_page;
+ __be32 spare_bytes_per_page;
+ __be32 pages_per_block;
+ __be32 blocks_per_lun;
+ __be32 max_bb_per_lun;
+ __be32 planes_per_lun;
+ __be32 luns_per_target;
+ __be32 total_target;
+
+ __be32 ecc_strength;
+ __be32 ecc_step_size;
+
+ u8 flags;
+ u8 reserved1;
+
+ __be16 sdr_read_cap;
+ struct op_slice sdr_read_1_1_1;
+ struct op_slice sdr_read_1_1_1_fast;
+ struct op_slice sdr_read_1_1_2;
+ struct op_slice sdr_read_1_2_2;
+ struct op_slice sdr_read_1_1_4;
+ struct op_slice sdr_read_1_4_4;
+ struct op_slice sdr_read_1_1_8;
+ struct op_slice sdr_read_1_8_8;
+
+ struct op_slice sdr_cont_read_1_1_1;
+ struct op_slice sdr_cont_read_1_1_1_fast;
+ struct op_slice sdr_cont_read_1_1_2;
+ struct op_slice sdr_cont_read_1_2_2;
+ struct op_slice sdr_cont_read_1_1_4;
+ struct op_slice sdr_cont_read_1_4_4;
+ struct op_slice sdr_cont_read_1_1_8;
+ struct op_slice sdr_cont_read_1_8_8;
+
+ __be16 ddr_read_cap;
+ struct op_slice ddr_read_1_1_1;
+ struct op_slice ddr_read_1_1_1_fast;
+ struct op_slice ddr_read_1_1_2;
+ struct op_slice ddr_read_1_2_2;
+ struct op_slice ddr_read_1_1_4;
+ struct op_slice ddr_read_1_4_4;
+ struct op_slice ddr_read_1_1_8;
+ struct op_slice ddr_read_1_8_8;
+
+ struct op_slice ddr_cont_read_1_1_1;
+ struct op_slice ddr_cont_read_1_1_1_fast;
+ struct op_slice ddr_cont_read_1_1_2;
+ struct op_slice ddr_cont_read_1_2_2;
+ struct op_slice ddr_cont_read_1_1_4;
+ struct op_slice ddr_cont_read_1_4_4;
+ struct op_slice ddr_cont_read_1_1_8;
+ struct op_slice ddr_cont_read_1_8_8;
+
+ u8 sdr_write_cap;
+ struct op_slice sdr_write_1_1_1;
+ struct op_slice sdr_write_1_1_4;
+ struct op_slice reserved2[6];
+ u8 ddr_write_cap;
+ struct op_slice reserved3[8];
+
+ u8 sdr_update_cap;
+ struct op_slice sdr_update_1_1_1;
+ struct op_slice sdr_update_1_1_4;
+ struct op_slice reserved4[6];
+ u8 ddr_update_cap;
+ struct op_slice reserved5[8];
+
+ struct CASN_OOB casn_oob;
+
+ /* Advanced ECC status CMD0 (higher bits) */
+ struct ADV_ECC_STATUS ecc_status_high;
+ /* Advanced ECC status CMD1 (lower bits) */
+ struct ADV_ECC_STATUS ecc_status_low;
+
+ u8 advecc_noerr_status;
+ u8 advecc_uncor_status;
+ u8 advecc_post_op;
+ u8 advecc_post_mask;
+
+ u8 reserved6[5];
+ __be16 crc;
+} __packed;
+
+#endif /* __LINUX_MTD_CASN_H */
--
2.45.2
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