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SAMA5 NAND: Fix some PMECC setup logic

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This commit is contained in:
Gregory Nutt
2013-12-04 11:56:56 -06:00
parent 68ccbc0855
commit ae01f868b2
6 changed files with 248 additions and 91 deletions
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include/nuttx/mtd/nand_scheme.h
+72 -2
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@@ -65,11 +65,11 @@ struct nand_scheme_s
uint8_t eccsize; /* Number of bytes of ECC correction */
uint8_t nxbytes; /* Number of extra bytes */
/* ECC byte positions */
/* ECC byte position offsets */
uint8_t eccbytepos[CONFIG_MTD_NAND_MAXSPAREECCBYTES];
/* Extra byte positions */
/* Extra byte position offsets */
uint8_t xbytepos[CONFIG_MTD_NAND_MAXSPAREEXTRABYTES];
};
@@ -138,6 +138,41 @@ void nandscheme_readbadblockmarker(FAR const struct nand_scheme_s *scheme,
void nandscheme_writebadblockmarker(FAR const struct nand_scheme_s *scheme,
FAR uint8_t *spare, uint8_t marker);
/****************************************************************************
* Name: nandscheme_eccoffset
*
* Description:
* Return the offset to the first byte of ECC information. This define
* makes the assumption that the first byte of the eccbytepos[] array
* is an offset to beginning of the ECC area. This might not necessarily
* be true!
*
* Input Parameters:
* scheme Pointer to a nand_scheme_s instance.
*
* Returned Values:
* Offset in the spare area to the first ECC byte
*
****************************************************************************/
#define nandscheme_eccoffset(s) ((s)->eccbytepos[0])
/****************************************************************************
* Name: nandscheme_eccsize
*
* Description:
* Return the size of the ECC information in the spare area
*
* Input Parameters:
* scheme Pointer to a nand_scheme_s instance.
*
* Returned Values:
* Size of the ECC information in the spare area.
*
****************************************************************************/
#define nandscheme_eccsize(s) ((s)->eccsize)
/****************************************************************************
* Name: nandscheme_readecc
*
@@ -176,6 +211,41 @@ void nandscheme_readecc(FAR const struct nand_scheme_s *scheme,
void nandscheme_writeecc(FAR const struct nand_scheme_s *scheme,
FAR uint8_t *spare, FAR const uint8_t *ecc);
/****************************************************************************
* Name: nandscheme_xoffset
*
* Description:
* Return the offset to the first byte of extra information. This define
* makes the assumption that the first byte of the xbytepos[] array
* is an offset to the beginning of the extra information area. This
* might not necessarily be true!
*
* Input Parameters:
* scheme Pointer to a nand_scheme_s instance.
*
* Returned Values:
* Offset in the spare area to the first extra byte
*
****************************************************************************/
#define nandscheme_xoffset(s) ((s)->xbytepos[0])
/****************************************************************************
* Name: nandscheme_xsize
*
* Description:
* Return the size of the extra information in the spare area
*
* Input Parameters:
* scheme Pointer to a nand_scheme_s instance.
*
* Returned Values:
* Size of the extra information in the spare area.
*
****************************************************************************/
#define nandscheme_xsize(s) ((s)->nxbytes)
/****************************************************************************
* Name: nandscheme_readextra
*