570 lines
17 KiB
C
570 lines
17 KiB
C
/*
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* 模块名称：NAND FTL 适配层（dhara + FatFS diskio 胶水）
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* 模块功能：实现 dhara NAND HAL 和 FatFS 磁盘 I/O，连接 GD5F2GQ5UE 底层驱动
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* 适用平台：STM32F407ZGT6
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* 作者：王建锋
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* 创建日期：2026-07-20
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* 修改记录：
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* 2026-07-20 王建锋 创建初始版本
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*/
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/* 头文件包含区 */
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#include <string.h>
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#include "gd5f2gq5ue.h"
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#include "ff.h"
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#include "diskio.h"
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#include "nand.h"
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#include "map.h"
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/* FTL 分区起始地址（块 0，偏移 0，占用全部 256MB） */
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#define FTL_FATFS_OFFSET 0U
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/* 调试输出配置 */
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#define DBG_TAG "[NAND_FTL]"
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#include "dbg_log.h"
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/* 私有宏定义区 */
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#define FTL_PAGE_SIZE GD5F_PAGE_SIZE
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#define FTL_SECTORS_PER_PAGE (FTL_PAGE_SIZE / 512)
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#define FTL_START_BLOCK (FTL_FATFS_OFFSET / GD5F_BLOCK_SIZE)
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#define FTL_NUM_BLOCKS (GD5F_TOTAL_BLOCKS - FTL_START_BLOCK)
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#define FTL_START_PAGE (FTL_START_BLOCK * GD5F_PAGES_PER_BLOCK)
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/* dhara 逻辑地址到物理地址转换 */
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static inline uint32_t ftl_phy_block(dhara_block_t b) { return b + FTL_START_BLOCK; }
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static inline uint32_t ftl_phy_page(dhara_page_t p) { return p + FTL_START_PAGE; }
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/* ======================== 私有变量 ======================== */
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/* dhara 核心数据结构 */
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static struct dhara_nand s_nand;
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static struct dhara_map s_map;
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static uint8_t s_page_buf[FTL_PAGE_SIZE]; /* dhara 内部页缓冲区 */
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/* 页面缓存（FatFS 读写缓存） */
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static uint8_t s_cache_buf[FTL_PAGE_SIZE];
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static dhara_sector_t s_cached_lpn;
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static uint8_t s_cache_dirty;
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/* 拷贝临时缓冲区 */
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static uint8_t s_copy_buf[FTL_PAGE_SIZE];
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/* 初始化状态 */
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static uint8_t s_initialized;
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/* ======================== 私有函数声明 ======================== */
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static int ftl_flush_cache(void);
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static int ftl_read_page(dhara_sector_t lpn);
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static void ftl_scan_checks_raw(void);
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/* SPI 原语从 gd5f2gq5ue.h 获取 */
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/* ======================== 页面缓存管理 ======================== */
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static int ftl_flush_cache(void) {
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if (!s_cache_dirty) {
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return GD5F_OK;
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}
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dhara_error_t err;
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if (dhara_map_write(&s_map, s_cached_lpn, s_cache_buf, &err) < 0) {
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DBG_ERROR("Cache flush failed: LPN=%lu err=%d", s_cached_lpn, err);
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return GD5F_ERROR;
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}
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s_cache_dirty = 0;
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return GD5F_OK;
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}
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static int ftl_read_page(dhara_sector_t lpn) {
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dhara_error_t err;
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if (dhara_map_read(&s_map, lpn, s_cache_buf, &err) < 0) {
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DBG_ERROR("Page read failed: LPN=%lu err=%d", lpn, err);
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return GD5F_ERROR;
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}
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s_cached_lpn = lpn;
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s_cache_dirty = 0;
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return GD5F_OK;
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}
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/* ======================== dhara NAND HAL ======================== */
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int dhara_nand_is_bad(const struct dhara_nand *n, dhara_block_t b) {
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(void)n;
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return gd5f2gq5ue_is_block_bad(ftl_phy_block(b));
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}
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void dhara_nand_mark_bad(const struct dhara_nand *n, dhara_block_t b) {
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(void)n;
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gd5f2gq5ue_mark_block_bad(ftl_phy_block(b));
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}
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int dhara_nand_erase(const struct dhara_nand *n, dhara_block_t b, dhara_error_t *err) {
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(void)n;
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int ret = gd5f_block_erase(ftl_phy_block(b));
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if (ret == GD5F_ERASE_FAIL || ret != GD5F_OK) {
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dhara_nand_mark_bad(n, b);
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dhara_set_error(err, DHARA_E_BAD_BLOCK);
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return -1;
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}
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return 0;
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}
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int dhara_nand_prog(const struct dhara_nand *n, dhara_page_t p, const uint8_t *data, dhara_error_t *err) {
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int ret;
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uint32_t phy_pg = ftl_phy_page(p);
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gd5f_write_enable();
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ret = gd5f_program_load(0, data, FTL_PAGE_SIZE);
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if (ret != GD5F_OK) {
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dhara_nand_mark_bad(n, p >> n->log2_ppb);
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dhara_set_error(err, DHARA_E_BAD_BLOCK);
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return -1;
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}
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ret = gd5f_program_exec(phy_pg);
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if (ret == GD5F_PROGRAM_FAIL || ret != GD5F_OK) {
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dhara_nand_mark_bad(n, p >> n->log2_ppb);
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dhara_set_error(err, DHARA_E_BAD_BLOCK);
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return -1;
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}
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/* 编程回读校验（2026-09-20 台架实证）：供电低于标称（3.1V）时
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* program 可"状态成功"但 cell 未可靠 latch（ECC 不可纠或数据错位）——
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* 状态寄存器发现不了，下次复位 journal resume 因 ECC 门拒绝这些
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* checkpoint 页 → 新写入整体静默丢失（重格式化循环的真根因）。
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* 回读比对+ECC 检查，失败则标记坏块由 dhara 迁移，宁可丢块不丢卷。 */
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if (gd5f_page_read(phy_pg) != GD5F_OK) {
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dhara_nand_mark_bad(n, p >> n->log2_ppb);
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dhara_set_error(err, DHARA_E_ECC);
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DBG_ERROR("program verify: readback fail, blk %lu",
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(unsigned long)(p >> n->log2_ppb));
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return -1;
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}
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if (gd5f_check_ecc() != GD5F_OK) {
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dhara_nand_mark_bad(n, p >> n->log2_ppb);
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dhara_set_error(err, DHARA_E_ECC);
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DBG_ERROR("program verify: ecc uncorrectable, blk %lu",
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(unsigned long)(p >> n->log2_ppb));
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return -1;
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}
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gd5f_read_from_cache(0, s_copy_buf, FTL_PAGE_SIZE);
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if (memcmp(s_copy_buf, data, FTL_PAGE_SIZE) != 0) {
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dhara_nand_mark_bad(n, p >> n->log2_ppb);
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dhara_set_error(err, DHARA_E_BAD_BLOCK);
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DBG_ERROR("program verify: data mismatch, blk %lu",
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(unsigned long)(p >> n->log2_ppb));
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return -1;
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}
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return 0;
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}
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int dhara_nand_is_free(const struct dhara_nand *n, dhara_page_t p) {
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(void)n;
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uint32_t i;
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uint8_t buf[64];
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uint32_t phy_pg = ftl_phy_page(p);
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if (gd5f_page_read(phy_pg) != GD5F_OK) {
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return 0;
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}
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gd5f_read_from_cache(0, buf, sizeof(buf));
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for (i = 0; i < sizeof(buf); i++) {
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if (buf[i] != 0xFF) {
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return 0;
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}
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}
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return 1;
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}
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int dhara_nand_read(const struct dhara_nand *n, dhara_page_t p, size_t offset, size_t length, uint8_t *data, dhara_error_t *err) {
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(void)n;
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uint32_t phy_pg = ftl_phy_page(p);
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if (gd5f_page_read(phy_pg) != GD5F_OK) {
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dhara_set_error(err, DHARA_E_ECC);
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return -1;
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}
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if (gd5f_check_ecc() != GD5F_OK) {
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dhara_set_error(err, DHARA_E_ECC);
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return -1;
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}
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gd5f_read_from_cache((uint16_t)offset, data, length);
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return 0;
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}
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int dhara_nand_copy(const struct dhara_nand *n, dhara_page_t src, dhara_page_t dst, dhara_error_t *err) {
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(void)n;
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if (dhara_nand_read(n, src, 0, FTL_PAGE_SIZE, s_copy_buf, err) < 0) {
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return -1;
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}
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if (dhara_nand_prog(n, dst, s_copy_buf, err) < 0) {
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return -1;
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}
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return 0;
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}
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/* ======================== FatFS 磁盘 I/O ======================== */
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DSTATUS disk_initialize(BYTE pdrv) {
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if (pdrv != 0) {
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return STA_NOINIT;
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}
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if (s_initialized) {
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return 0;
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}
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DBG_INFO("Initializing NAND FTL...");
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s_nand.log2_page_size = 11;
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s_nand.log2_ppb = 6;
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/* dhara 可见块数 = 总块数 - 保留块池（BBT 存储区不交给 dhara，避免被擦写） */
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s_nand.num_blocks = gd5f_get_usable_blocks();
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dhara_map_init(&s_map, &s_nand, s_page_buf, 4);
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/* 诊断：resume 前的裸 NAND checkpoint 扫描（复位后地面真值，
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* 不经 FTL 缓存）——判定上一开机的 checkpoint 页是否真正写入芯片 */
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DBG_INFO("Pre-resume raw check scan start: blocks=%lu",
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(unsigned long)s_nand.num_blocks);
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ftl_scan_checks_raw();
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memset(s_cache_buf, 0, FTL_PAGE_SIZE);
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s_cached_lpn = (dhara_sector_t)-1; /* -1 表示缓存未加载；LPN 0 合法，不能用 0 作哨兵 */
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s_cache_dirty = 0;
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{
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dhara_error_t err;
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if (dhara_map_resume(&s_map, &err) < 0) {
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DBG_INFO("No valid map found, creating fresh (err=%d)", err);
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dhara_map_clear(&s_map);
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} else {
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DBG_INFO("Map resumed: %lu/%lu sectors used",
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dhara_map_size(&s_map), dhara_map_capacity(&s_map));
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}
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}
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s_initialized = 1;
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DBG_INFO("NAND FTL ready (capacity: %lu pages = %lu MB)",
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dhara_map_capacity(&s_map),
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(dhara_map_capacity(&s_map) * FTL_PAGE_SIZE) / (1024 * 1024));
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return 0;
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}
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int nand_ftl_init(void)
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{
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DSTATUS sta = disk_initialize(0);
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return (sta == 0) ? 0 : -1;
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}
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void nand_ftl_deinit(void)
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{
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/* 复位 FTL 状态，使下次 nand_ftl_init() 真正重新走 dhara_map_resume，
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用于测试"掉电恢复"与"坏块注入后重建"场景（模拟设备重启） */
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s_initialized = 0;
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s_cached_lpn = (dhara_sector_t)-1;
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s_cache_dirty = 0;
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}
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DSTATUS disk_status(BYTE pdrv) {
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if (pdrv != 0) {
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return STA_NOINIT;
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}
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if (!s_initialized) {
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return STA_NOINIT;
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}
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return 0;
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}
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DRESULT disk_read(BYTE pdrv, BYTE *buff, LBA_t sector, UINT count) {
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if (pdrv != 0 || !buff) {
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return RES_PARERR;
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}
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if (!s_initialized && disk_initialize(pdrv) != 0) {
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return RES_NOTRDY;
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}
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while (count > 0) {
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dhara_sector_t lpn = (dhara_sector_t)(sector / FTL_SECTORS_PER_PAGE);
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uint32_t offset = (uint32_t)(sector % FTL_SECTORS_PER_PAGE) * 512;
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uint32_t batch = FTL_SECTORS_PER_PAGE - (sector % FTL_SECTORS_PER_PAGE);
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if (batch > count) {
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batch = count;
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}
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if (lpn != s_cached_lpn) {
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if (ftl_flush_cache() != GD5F_OK) {
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return RES_ERROR;
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}
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if (ftl_read_page(lpn) != GD5F_OK) {
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return RES_ERROR;
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}
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}
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memcpy(buff, s_cache_buf + offset, batch * 512);
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buff += batch * 512;
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sector += batch;
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count -= (UINT)batch;
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}
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return RES_OK;
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}
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DRESULT disk_write(BYTE pdrv, const BYTE *buff, LBA_t sector, UINT count) {
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if (pdrv != 0 || !buff) {
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return RES_PARERR;
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}
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if (!s_initialized && disk_initialize(pdrv) != 0) {
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return RES_NOTRDY;
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}
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while (count > 0) {
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dhara_sector_t lpn = (dhara_sector_t)(sector / FTL_SECTORS_PER_PAGE);
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uint32_t offset = (uint32_t)(sector % FTL_SECTORS_PER_PAGE) * 512;
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uint32_t batch = FTL_SECTORS_PER_PAGE - (sector % FTL_SECTORS_PER_PAGE);
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if (batch > count) {
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batch = count;
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}
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if (lpn != s_cached_lpn) {
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if (ftl_flush_cache() != GD5F_OK) {
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return RES_ERROR;
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}
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if (ftl_read_page(lpn) != GD5F_OK) {
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return RES_ERROR;
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}
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}
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memcpy(s_cache_buf + offset, buff, batch * 512);
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s_cache_dirty = 1;
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if (offset == 0 && batch == FTL_SECTORS_PER_PAGE) {
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if (ftl_flush_cache() != GD5F_OK) {
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return RES_ERROR;
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}
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}
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buff += batch * 512;
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sector += batch;
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count -= (UINT)batch;
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}
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return RES_OK;
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}
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DRESULT disk_ioctl(BYTE pdrv, BYTE cmd, void *buff) {
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if (pdrv != 0) {
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return RES_PARERR;
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}
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if (!s_initialized) {
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return RES_NOTRDY;
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}
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switch (cmd) {
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case CTRL_SYNC:
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if (ftl_flush_cache() != GD5F_OK) {
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return RES_ERROR;
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}
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{
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dhara_error_t err;
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if (dhara_map_sync(&s_map, &err) < 0) {
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DBG_ERROR("Map sync failed: %d", err);
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return RES_ERROR;
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}
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}
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return RES_OK;
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case GET_SECTOR_COUNT: {
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LBA_t *p_sectors = (LBA_t *)buff;
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dhara_sector_t pages = dhara_map_capacity(&s_map);
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*p_sectors = pages * FTL_SECTORS_PER_PAGE;
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return RES_OK;
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}
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case GET_SECTOR_SIZE:
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*(WORD *)buff = 512;
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return RES_OK;
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case GET_BLOCK_SIZE:
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*(DWORD *)buff = 1;
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return RES_OK;
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default:
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return RES_PARERR;
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}
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}
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/* ======================== 公共函数定义 ======================== */
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int nand_ftl_format(void) {
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dhara_error_t err;
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if (!s_initialized) {
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if (disk_initialize(0) != 0) {
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return GD5F_ERROR;
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}
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}
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if (ftl_flush_cache() != GD5F_OK) {
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return GD5F_ERROR;
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}
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dhara_map_clear(&s_map);
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if (dhara_map_sync(&s_map, &err) < 0) {
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DBG_ERROR("Map sync after clear failed: %d", err);
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return GD5F_ERROR;
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}
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s_cache_dirty = 0;
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s_cached_lpn = (dhara_sector_t)-1;
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DBG_INFO("NAND FTL formatted, capacity: %lu pages", dhara_map_capacity(&s_map));
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return GD5F_OK;
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}
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/* ======================== 诊断（跨复位日志持久性分析） ======================== */
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/* 打印当前 journal/map 状态（epoch/head/tail/root/容量） */
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void nand_ftl_log_state(const char *tag)
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{
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const struct dhara_journal *j = &s_map.journal;
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if (!s_initialized) {
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return;
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}
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DBG_INFO("FTL state %s: epoch=%u head=%lu tail=%lu root=%lu jsize=%lu map=%lu",
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tag, (unsigned int)j->epoch,
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(unsigned long)j->head, (unsigned long)j->tail,
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(unsigned long)j->root,
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(unsigned long)dhara_journal_size(j),
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(unsigned long)dhara_map_size(&s_map));
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}
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/* 打印某块 checkpoint 页的 16 字节 header（magic/epoch/tail/bb），
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* 用于区分"未落盘(全FF)"/"编程失败(花)"/"完整" 三种状态 */
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static void ftl_dump_checkheader(uint32_t blk)
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{
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uint8_t hdr[16];
|
||
|
||
const uint32_t pg = ftl_phy_page((blk << s_nand.log2_ppb) |
|
||
((1u << s_map.journal.log2_ppc) - 1u));
|
||
if (gd5f_page_read(pg) != GD5F_OK) {
|
||
DBG_INFO("check hdr blk %lu: read fail", (unsigned long)blk);
|
||
return;
|
||
}
|
||
gd5f_read_from_cache(0, hdr, sizeof(hdr));
|
||
DBG_INFO("check hdr blk %lu: %02X %02X %02X %02X %02X %02X %02X %02X "
|
||
"%02X %02X %02X %02X %02X %02X %02X %02X",
|
||
(unsigned long)blk,
|
||
(unsigned int)hdr[0], (unsigned int)hdr[1], (unsigned int)hdr[2],
|
||
(unsigned int)hdr[3], (unsigned int)hdr[4], (unsigned int)hdr[5],
|
||
(unsigned int)hdr[6], (unsigned int)hdr[7],
|
||
(unsigned int)hdr[8], (unsigned int)hdr[9], (unsigned int)hdr[10],
|
||
(unsigned int)hdr[11], (unsigned int)hdr[12], (unsigned int)hdr[13],
|
||
(unsigned int)hdr[14], (unsigned int)hdr[15]);
|
||
}
|
||
|
||
/* 全扫每块首组 checkpoint 页（magic+epoch），打印连续区段分布，
|
||
* 用于识别 journal 环上的 epoch 分界与空洞。
|
||
* 裸读（gd5f 页读），不受 FTL 缓存影响 = NAND 真实内容。 */
|
||
static void ftl_scan_checks_raw(void)
|
||
{
|
||
uint32_t i;
|
||
uint8_t buf[8];
|
||
uint32_t total = 0;
|
||
uint32_t run_start = 0;
|
||
uint32_t run_prev = 0;
|
||
uint32_t run_len = 0;
|
||
uint32_t run_ecc_fail = 0;
|
||
uint32_t run_ecc_first = 0;
|
||
uint32_t run_ecc_last = 0;
|
||
uint8_t run_epoch = 0;
|
||
uint8_t run_open = 0;
|
||
|
||
for (i = 0; i < s_nand.num_blocks; i++) {
|
||
const uint32_t pg = ftl_phy_page((i << s_nand.log2_ppb) |
|
||
((1u << s_map.journal.log2_ppc) - 1u));
|
||
|
||
if (gd5f_page_read(pg) != GD5F_OK) {
|
||
continue;
|
||
}
|
||
gd5f_read_from_cache(0, buf, sizeof(buf));
|
||
if (buf[0] == 'D' && buf[1] == 'h' && buf[2] == 'a') {
|
||
const uint8_t ep = buf[3];
|
||
int ecc = 0;
|
||
|
||
total++;
|
||
ecc = gd5f_check_ecc();
|
||
if (ecc != GD5F_OK) {
|
||
run_ecc_fail++;
|
||
if (!run_ecc_fail) {
|
||
run_ecc_first = i;
|
||
}
|
||
run_ecc_last = i;
|
||
}
|
||
if (!run_open || (i != run_prev + 1) || (ep != run_epoch)) {
|
||
if (run_open) {
|
||
DBG_INFO("check run: blk %lu..%lu epoch=%u (%lu blocks)",
|
||
(unsigned long)run_start, (unsigned long)run_prev,
|
||
(unsigned int)run_epoch, (unsigned long)run_len);
|
||
if (run_ecc_fail) {
|
||
DBG_INFO(" run ecc-fail: %lu blocks (blk %lu..%lu)",
|
||
(unsigned long)run_ecc_fail,
|
||
(unsigned long)run_ecc_first,
|
||
(unsigned long)run_ecc_last);
|
||
}
|
||
ftl_dump_checkheader(run_start);
|
||
}
|
||
run_start = i;
|
||
run_epoch = ep;
|
||
run_len = 0;
|
||
run_ecc_fail = 0;
|
||
run_open = 1;
|
||
}
|
||
run_prev = i;
|
||
run_len++;
|
||
}
|
||
}
|
||
if (run_open) {
|
||
DBG_INFO("check run: blk %lu..%lu epoch=%u (%lu blocks)",
|
||
(unsigned long)run_start, (unsigned long)run_prev,
|
||
(unsigned int)run_epoch, (unsigned long)run_len);
|
||
if (run_ecc_fail) {
|
||
DBG_INFO(" run ecc-fail: %lu blocks (blk %lu..%lu)",
|
||
(unsigned long)run_ecc_fail,
|
||
(unsigned long)run_ecc_first,
|
||
(unsigned long)run_ecc_last);
|
||
}
|
||
ftl_dump_checkheader(run_start);
|
||
}
|
||
DBG_INFO("check scan done: %lu checkpoint blocks", (unsigned long)total);
|
||
}
|
||
|
||
void nand_ftl_scan_checks(void)
|
||
{
|
||
if (!s_initialized) {
|
||
return;
|
||
}
|
||
|
||
DBG_INFO("check scan start: blocks=%lu", (unsigned long)s_nand.num_blocks);
|
||
ftl_scan_checks_raw();
|
||
}
|