360 lines
11 KiB
C
360 lines
11 KiB
C
/*
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* RT-Thread Device Interface for uffs
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "dfs_uffs.h"
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static int nand_init_flash(uffs_Device *dev)
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{
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return UFFS_FLASH_NO_ERR;
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}
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static int nand_release_flash(uffs_Device *dev)
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{
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return UFFS_FLASH_NO_ERR;
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}
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static int nand_erase_block(uffs_Device *dev, unsigned block)
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{
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int res;
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res = rt_mtd_nand_erase_block(RT_MTD_NAND_DEVICE(dev->_private), block);
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return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
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}
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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static int nand_check_block(uffs_Device *dev, unsigned block)
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{
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int res;
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res = rt_mtd_nand_check_block(RT_MTD_NAND_DEVICE(dev->_private), block);
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return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
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}
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static int nand_mark_badblock(uffs_Device *dev, unsigned block)
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{
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int res;
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res = rt_mtd_nand_mark_badblock(RT_MTD_NAND_DEVICE(dev->_private), block);
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return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
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}
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#endif
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#if (RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_NONE) || (RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_SOFT)
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static int nand_read_page(uffs_Device *dev,
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u32 block,
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u32 page,
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u8 *data,
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int data_len,
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u8 *ecc,
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rt_uint8_t *spare,
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int spare_len)
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{
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int res;
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page = block * dev->attr->pages_per_block + page;
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if (data == NULL && spare == NULL)
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{
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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RT_ASSERT(0); //should not be here
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#else
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/* check block status: bad or good */
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rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
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rt_memset(spare, 0, UFFS_MAX_SPARE_SIZE);
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rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
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page, RT_NULL, 0,
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spare, dev->attr->spare_size);//dev->mem.spare_data_size
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res = spare[dev->attr->block_status_offs] == 0xFF ?
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UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
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return res;
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#endif
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}
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rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
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page, data, data_len, spare, spare_len);
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return UFFS_FLASH_NO_ERR;
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}
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static int nand_write_page(uffs_Device *dev,
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u32 block,
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u32 page,
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const u8 *data,
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int data_len,
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const u8 *spare,
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int spare_len)
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{
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int res;
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RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
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page = block * dev->attr->pages_per_block + page;
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if (data == NULL && spare == NULL)
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{
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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RT_ASSERT(0); //should not be here
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#else
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/* mark bad block */
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rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
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rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
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spare[dev->attr->block_status_offs] = 0x00;
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res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
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page, RT_NULL, 0,
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spare, dev->attr->spare_size);//dev->mem.spare_data_size
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if (res != RT_EOK)
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goto __error;
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#endif
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}
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res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
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page, data, data_len, spare, spare_len);
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if (res != RT_EOK)
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goto __error;
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return UFFS_FLASH_NO_ERR;
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__error:
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return UFFS_FLASH_IO_ERR;
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}
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const uffs_FlashOps nand_ops =
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{
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nand_init_flash, /* InitFlash() */
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nand_release_flash, /* ReleaseFlash() */
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nand_read_page, /* ReadPage() */
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NULL, /* ReadPageWithLayout */
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nand_write_page, /* WritePage() */
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NULL, /* WirtePageWithLayout */
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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nand_check_block,
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nand_mark_badblock,
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#else
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NULL, /* IsBadBlock(), let UFFS take care of it. */
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NULL, /* MarkBadBlock(), let UFFS take care of it. */
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#endif
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nand_erase_block, /* EraseBlock() */
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};
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void uffs_setup_storage(struct uffs_StorageAttrSt *attr,
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struct rt_mtd_nand_device *nand)
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{
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rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
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// attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
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attr->page_data_size = nand->page_size; /* page data size */
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attr->pages_per_block = nand->pages_per_block; /* pages per block */
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attr->spare_size = nand->oob_size; /* page spare size */
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attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE; /* ecc option */
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attr->ecc_size = 0; /* ecc size is 0 , the uffs will calculate the ecc size*/
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attr->block_status_offs = attr->ecc_size; /* indicate block bad or good, offset in spare */
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attr->layout_opt = RT_CONFIG_UFFS_LAYOUT; /* let UFFS do the spare layout */
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}
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#elif RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_HW_AUTO
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static int WritePageWithLayout(uffs_Device *dev,
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u32 block,
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u32 page,
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const u8 *data,
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int data_len,
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const u8 *ecc, //NULL
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const uffs_TagStore *ts)
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{
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int res;
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int spare_len;
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rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
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RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
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page = block * dev->attr->pages_per_block + page;
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spare_len = dev->mem.spare_data_size;
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if (data == NULL && ts == NULL)
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{
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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RT_ASSERT(0); //should not be here
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#else
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/* mark bad block */
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rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
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spare[dev->attr->block_status_offs] = 0x00;
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res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
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page, RT_NULL, 0,
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spare, dev->attr->spare_size);//dev->mem.spare_data_size
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if (res != RT_EOK)
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goto __error;
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dev->st.io_write++;
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return UFFS_FLASH_NO_ERR;
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#endif
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}
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if (data != NULL && data_len != 0)
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{
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RT_ASSERT(data_len == dev->attr->page_data_size);
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dev->st.page_write_count++;
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dev->st.io_write += data_len;
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}
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if (ts != RT_NULL)
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{
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uffs_FlashMakeSpare(dev, ts, RT_NULL, (u8 *)spare);
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dev->st.spare_write_count++;
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dev->st.io_write += spare_len;
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}
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res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
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page, data, data_len, spare, spare_len);
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if (res != RT_EOK)
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goto __error;
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return UFFS_FLASH_NO_ERR;
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__error:
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return UFFS_FLASH_IO_ERR;
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}
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static URET ReadPageWithLayout(uffs_Device *dev,
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u32 block,
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u32 page,
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u8 *data,
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int data_len,
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u8 *ecc, //NULL
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uffs_TagStore *ts,
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u8 *ecc_store) //NULL
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{
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int res = UFFS_FLASH_NO_ERR;
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int spare_len;
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rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
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RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
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page = block * dev->attr->pages_per_block + page;
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spare_len = dev->mem.spare_data_size;
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if (data == RT_NULL && ts == RT_NULL)
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{
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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RT_ASSERT(0); //should not be here
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#else
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/* check block good or bad */
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rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
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page, RT_NULL, 0,
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spare, dev->attr->spare_size);//dev->mem.spare_data_size
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dev->st.io_read++;
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res = spare[dev->attr->block_status_offs] == 0xFF ?
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UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
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return res;
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#endif
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}
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if (data != RT_NULL)
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{
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dev->st.io_read += data_len;
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dev->st.page_read_count++;
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}
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res = rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
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page, data, data_len, spare, spare_len);
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if (res == 0)
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res = UFFS_FLASH_NO_ERR;
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else if (res == -1)
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{
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//TODO ecc correct, add code to use hardware do ecc correct
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res = UFFS_FLASH_ECC_OK;
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}
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else
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res = UFFS_FLASH_ECC_FAIL;
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if (ts != RT_NULL)
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{
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// unload ts and ecc from spare, you can modify it if you like
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uffs_FlashUnloadSpare(dev, (const u8 *)spare, ts, RT_NULL);
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if ((spare[spare_len - 1] == 0xFF) && (res == UFFS_FLASH_NO_ERR))
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res = UFFS_FLASH_NOT_SEALED;
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dev->st.io_read += spare_len;
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dev->st.spare_read_count++;
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}
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return res;
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}
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const uffs_FlashOps nand_ops =
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{
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nand_init_flash, /* InitFlash() */
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nand_release_flash, /* ReleaseFlash() */
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NULL, /* ReadPage() */
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ReadPageWithLayout, /* ReadPageWithLayout */
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NULL, /* WritePage() */
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WritePageWithLayout,/* WirtePageWithLayout */
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#if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
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nand_check_block,
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nand_mark_badblock,
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#else
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NULL, /* IsBadBlock(), let UFFS take care of it. */
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NULL, /* MarkBadBlock(), let UFFS take care of it. */
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#endif
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nand_erase_block, /* EraseBlock() */
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};
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static rt_uint8_t hw_flash_data_layout[UFFS_SPARE_LAYOUT_SIZE] =
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{
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0x05, 0x08, 0xFF, 0x00
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};
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static rt_uint8_t hw_flash_ecc_layout[UFFS_SPARE_LAYOUT_SIZE] =
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{
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0x00, 0x04, 0xFF, 0x00
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};
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void uffs_setup_storage(struct uffs_StorageAttrSt *attr,
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struct rt_mtd_nand_device *nand)
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{
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rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
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// attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
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attr->page_data_size = nand->page_size; /* page data size */
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attr->pages_per_block = nand->pages_per_block; /* pages per block */
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attr->spare_size = nand->oob_size; /* page spare size */
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attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE; /* ecc option */
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attr->ecc_size = nand->oob_size-nand->oob_free; /* ecc size */
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attr->block_status_offs = attr->ecc_size; /* indicate block bad or good, offset in spare */
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attr->layout_opt = RT_CONFIG_UFFS_LAYOUT; /* let UFFS do the spare layout */
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/* calculate the ecc layout array */
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hw_flash_data_layout[0] = attr->ecc_size + 1; /* ecc size + 1byte block status */
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hw_flash_data_layout[1] = 0x08;
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hw_flash_data_layout[2] = 0xFF;
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hw_flash_data_layout[3] = 0x00;
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hw_flash_ecc_layout[0] = 0;
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hw_flash_ecc_layout[1] = attr->ecc_size;
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hw_flash_ecc_layout[2] = 0xFF;
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hw_flash_ecc_layout[3] = 0x00;
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/* initialize _uffs_data_layout and _uffs_ecc_layout */
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rt_memcpy(attr->_uffs_data_layout, hw_flash_data_layout, UFFS_SPARE_LAYOUT_SIZE);
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rt_memcpy(attr->_uffs_ecc_layout, hw_flash_ecc_layout, UFFS_SPARE_LAYOUT_SIZE);
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attr->data_layout = attr->_uffs_data_layout;
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attr->ecc_layout = attr->_uffs_ecc_layout;
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}
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#endif
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