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 <bean...@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
