Messages in this thread Patch in this message | | | From | Bean Huo 霍斌斌 (beanhuo) <> | Subject | [PATCH 1/9] drivers:nand:mtd: add support for UBI bakvol in mtd layer | Date | Mon, 28 Sep 2015 07:02:37 +0000 |
| |
Add support for UBI bakvol in mtd layer.
This solution based on MLC NAND dual plane program. so add hook in mtd layer.
Signed-off-by: Bean Huo <beanhuo@micron.com> --- include/linux/mtd/mtd.h | 19 +++++++++++++++++++ include/linux/mtd/nand.h | 4 ++++ include/linux/mtd/ubi.h | 9 +++++++++ 3 files changed, 32 insertions(+)
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index f17fa75..cfcb3a68 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -204,6 +204,9 @@ struct mtd_info { struct mtd_oob_ops *ops); int (*_write_oob) (struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops); + int (*_dual_plane_write_oob) (struct mtd_info *mtd, loff_t to_plane0, + struct mtd_oob_ops *ops_plane0, loff_t to_plane1, + struct mtd_oob_ops *ops_plane1); int (*_get_fact_prot_info) (struct mtd_info *mtd, size_t len, size_t *retlen, struct otp_info *buf); int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, @@ -280,6 +283,22 @@ static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to, return mtd->_write_oob(mtd, to, ops); } +static inline int mtd_write_dual_plane_oob(struct mtd_info *mtd, + loff_t to_plane0, struct mtd_oob_ops *ops0, loff_t to_plane1, + struct mtd_oob_ops *ops1) +{ + ops0->retlen = ops0->oobretlen = 0; + ops1->retlen = ops1->oobretlen = 0; + + if (!mtd->_dual_plane_write_oob) + return -EOPNOTSUPP; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + + return mtd->_dual_plane_write_oob(mtd, to_plane0, ops0, + to_plane1, ops1); +} + int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen, struct otp_info *buf); int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 272f429..4c5be01 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -77,6 +77,7 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); #define NAND_CMD_READ1 1 #define NAND_CMD_RNDOUT 5 #define NAND_CMD_PAGEPROG 0x10 +#define NAND_CMD_MULTI_PAGEPROG 0x11 #define NAND_CMD_READOOB 0x50 #define NAND_CMD_ERASE1 0x60 #define NAND_CMD_STATUS 0x70 @@ -671,6 +672,9 @@ struct nand_chip { int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, uint32_t offset, int data_len, const uint8_t *buf, int oob_required, int page, int cached, int raw); + int (*write_plane_page)(struct mtd_info *mtd, struct nand_chip *chip, + uint32_t offset, int data_len, const uint8_t *buf, + int oob_required, int page, int plane, int raw); int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip, int feature_addr, uint8_t *subfeature_para); int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip, diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h index 1e271cb..1da3418 100644 --- a/include/linux/mtd/ubi.h +++ b/include/linux/mtd/ubi.h @@ -35,6 +35,15 @@ */ #define UBI_MAX_SG_COUNT 64 +enum { + UBI_BAKVOL_UNONE, + UBI_BAKVOL_INIT_INFO, + UBI_BAKVOL_INIT_INFO_DONE, + UBI_BAKVOL_INIT_VOLUME, + UBI_BAKVOL_INIT_VOLUME_DONE, + UBI_BAKVOL_RUN +}; + /* * enum ubi_open_mode - UBI volume open mode constants. * -- 1.9.1 | |