// SPDX-License-Identifier: (GPL-2.0+ OR MIT) /* * Amlogic Meson Nand Flash Controller Driver * * Copyright (c) 2018 Amlogic, inc. * Author: Liang Yang <[email protected]> */ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/mtd/rawnand.h> #include <linux/mtd/mtd.h> #include <linux/mfd/syscon.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/iopoll.h> #include <linux/of.h> #include <linux/sched/task_stack.h> #define NFC_REG_CMD … #define NFC_CMD_IDLE … #define NFC_CMD_CLE … #define NFC_CMD_ALE … #define NFC_CMD_ADL … #define NFC_CMD_ADH … #define NFC_CMD_AIL … #define NFC_CMD_AIH … #define NFC_CMD_SEED … #define NFC_CMD_M2N … #define NFC_CMD_N2M … #define NFC_CMD_RB … #define NFC_CMD_SCRAMBLER_ENABLE … #define NFC_CMD_SCRAMBLER_DISABLE … #define NFC_CMD_SHORTMODE_ENABLE … #define NFC_CMD_SHORTMODE_DISABLE … #define NFC_CMD_RB_INT … #define NFC_CMD_RB_INT_NO_PIN … #define NFC_CMD_GET_SIZE(x) … #define NFC_REG_CFG … #define NFC_REG_DADR … #define NFC_REG_IADR … #define NFC_REG_BUF … #define NFC_REG_INFO … #define NFC_REG_DC … #define NFC_REG_ADR … #define NFC_REG_DL … #define NFC_REG_DH … #define NFC_REG_CADR … #define NFC_REG_SADR … #define NFC_REG_PINS … #define NFC_REG_VER … #define NFC_RB_IRQ_EN … #define CLK_DIV_SHIFT … #define CLK_DIV_WIDTH … #define CMDRWGEN(cmd_dir, ran, bch, short_mode, page_size, pages) … #define GENCMDDADDRL(adl, addr) … #define GENCMDDADDRH(adh, addr) … #define GENCMDIADDRL(ail, addr) … #define GENCMDIADDRH(aih, addr) … #define DMA_DIR(dir) … #define DMA_ADDR_ALIGN … #define NFC_SHORT_MODE_ECC_SZ … #define ECC_CHECK_RETURN_FF … #define NAND_CE0 … #define NAND_CE1 … #define DMA_BUSY_TIMEOUT … #define CMD_FIFO_EMPTY_TIMEOUT … #define MAX_CE_NUM … /* eMMC clock register, misc control */ #define CLK_SELECT_NAND … #define CLK_ALWAYS_ON_NAND … #define CLK_SELECT_FIX_PLL2 … #define NFC_CLK_CYCLE … /* nand flash controller delay 3 ns */ #define NFC_DEFAULT_DELAY … #define ROW_ADDER(page, index) … #define MAX_CYCLE_ADDRS … #define DIRREAD … #define DIRWRITE … #define ECC_PARITY_BCH8_512B … #define ECC_COMPLETE … #define ECC_ERR_CNT(x) … #define ECC_ZERO_CNT(x) … #define ECC_UNCORRECTABLE … #define PER_INFO_BYTE … #define NFC_CMD_RAW_LEN … #define NFC_COLUMN_ADDR_0 … #define NFC_COLUMN_ADDR_1 … struct meson_nfc_nand_chip { … }; struct meson_nand_ecc { … }; struct meson_nfc_data { … }; struct meson_nfc_param { … }; struct nand_rw_cmd { … }; struct nand_timing { … }; struct meson_nfc { … }; enum { … }; #define MESON_ECC_DATA(b, s, sz) … static struct meson_nand_ecc meson_ecc[] = …; static int meson_nand_calc_ecc_bytes(int step_size, int strength) { … } NAND_ECC_CAPS_SINGLE(…); static const int axg_stepinfo_strengths[] = …; static const struct nand_ecc_step_info axg_stepinfo[] = …; static const struct nand_ecc_caps meson_axg_ecc_caps = …; static struct meson_nfc_nand_chip *to_meson_nand(struct nand_chip *nand) { … } static void meson_nfc_select_chip(struct nand_chip *nand, int chip) { … } static void meson_nfc_cmd_idle(struct meson_nfc *nfc, u32 time) { … } static void meson_nfc_cmd_seed(struct meson_nfc *nfc, u32 seed) { … } static int meson_nfc_is_boot_page(struct nand_chip *nand, int page) { … } static void meson_nfc_cmd_access(struct nand_chip *nand, int raw, bool dir, int page) { … } static void meson_nfc_drain_cmd(struct meson_nfc *nfc) { … } static int meson_nfc_wait_cmd_finish(struct meson_nfc *nfc, unsigned int timeout_ms) { … } static int meson_nfc_wait_dma_finish(struct meson_nfc *nfc) { … } static u8 *meson_nfc_oob_ptr(struct nand_chip *nand, int i) { … } static u8 *meson_nfc_data_ptr(struct nand_chip *nand, int i) { … } static void meson_nfc_get_data_oob(struct nand_chip *nand, u8 *buf, u8 *oobbuf) { … } static void meson_nfc_set_data_oob(struct nand_chip *nand, const u8 *buf, u8 *oobbuf) { … } static int meson_nfc_wait_no_rb_pin(struct nand_chip *nand, int timeout_ms, bool need_cmd_read0) { … } static int meson_nfc_wait_rb_pin(struct meson_nfc *nfc, int timeout_ms) { … } static int meson_nfc_queue_rb(struct nand_chip *nand, int timeout_ms, bool need_cmd_read0) { … } static void meson_nfc_set_user_byte(struct nand_chip *nand, u8 *oob_buf) { … } static void meson_nfc_get_user_byte(struct nand_chip *nand, u8 *oob_buf) { … } static int meson_nfc_ecc_correct(struct nand_chip *nand, u32 *bitflips, u64 *correct_bitmap) { … } static int meson_nfc_dma_buffer_setup(struct nand_chip *nand, void *databuf, int datalen, void *infobuf, int infolen, enum dma_data_direction dir) { … } static void meson_nfc_dma_buffer_release(struct nand_chip *nand, int datalen, int infolen, enum dma_data_direction dir) { … } static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len) { … } static int meson_nfc_write_buf(struct nand_chip *nand, u8 *buf, int len) { … } static int meson_nfc_rw_cmd_prepare_and_execute(struct nand_chip *nand, int page, bool in) { … } static int meson_nfc_write_page_sub(struct nand_chip *nand, int page, int raw) { … } static int meson_nfc_write_page_raw(struct nand_chip *nand, const u8 *buf, int oob_required, int page) { … } static int meson_nfc_write_page_hwecc(struct nand_chip *nand, const u8 *buf, int oob_required, int page) { … } static void meson_nfc_check_ecc_pages_valid(struct meson_nfc *nfc, struct nand_chip *nand, int raw) { … } static int meson_nfc_read_page_sub(struct nand_chip *nand, int page, int raw) { … } static int meson_nfc_read_page_raw(struct nand_chip *nand, u8 *buf, int oob_required, int page) { … } static int meson_nfc_read_page_hwecc(struct nand_chip *nand, u8 *buf, int oob_required, int page) { … } static int meson_nfc_read_oob_raw(struct nand_chip *nand, int page) { … } static int meson_nfc_read_oob(struct nand_chip *nand, int page) { … } static bool meson_nfc_is_buffer_dma_safe(const void *buffer) { … } static void * meson_nand_op_get_dma_safe_input_buf(const struct nand_op_instr *instr) { … } static void meson_nand_op_put_dma_safe_input_buf(const struct nand_op_instr *instr, void *buf) { … } static void * meson_nand_op_get_dma_safe_output_buf(const struct nand_op_instr *instr) { … } static void meson_nand_op_put_dma_safe_output_buf(const struct nand_op_instr *instr, const void *buf) { … } static int meson_nfc_check_op(struct nand_chip *chip, const struct nand_operation *op) { … } static int meson_nfc_exec_op(struct nand_chip *nand, const struct nand_operation *op, bool check_only) { … } static int meson_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *oobregion) { … } static int meson_ooblayout_free(struct mtd_info *mtd, int section, struct mtd_oob_region *oobregion) { … } static const struct mtd_ooblayout_ops meson_ooblayout_ops = …; static int meson_nfc_clk_init(struct meson_nfc *nfc) { … } static void meson_nfc_disable_clk(struct meson_nfc *nfc) { … } static void meson_nfc_free_buffer(struct nand_chip *nand) { … } static int meson_chip_buffer_init(struct nand_chip *nand) { … } static int meson_nfc_setup_interface(struct nand_chip *nand, int csline, const struct nand_interface_config *conf) { … } static int meson_nand_bch_mode(struct nand_chip *nand) { … } static void meson_nand_detach_chip(struct nand_chip *nand) { … } static int meson_nand_attach_chip(struct nand_chip *nand) { … } static const struct nand_controller_ops meson_nand_controller_ops = …; static int meson_nfc_nand_chip_init(struct device *dev, struct meson_nfc *nfc, struct device_node *np) { … } static void meson_nfc_nand_chips_cleanup(struct meson_nfc *nfc) { … } static int meson_nfc_nand_chips_init(struct device *dev, struct meson_nfc *nfc) { … } static irqreturn_t meson_nfc_irq(int irq, void *id) { … } static const struct meson_nfc_data meson_gxl_data = …; static const struct meson_nfc_data meson_axg_data = …; static const struct of_device_id meson_nfc_id_table[] = …; MODULE_DEVICE_TABLE(of, meson_nfc_id_table); static int meson_nfc_probe(struct platform_device *pdev) { … } static void meson_nfc_remove(struct platform_device *pdev) { … } static struct platform_driver meson_nfc_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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