78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
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/*
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* spinand_ecc_op.h for SUNXI NAND .
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*
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* Copyright (C) 2016 Allwinner.
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*
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef __NAND_ECC_OP_H
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#define __NAND_ECC_OP_H
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#include <mach/sunxi_spinand.h>
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/**
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* name format:
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* 1. EccBitCount
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* 2. LimitValue
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* 3. ErrValue
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*
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* [example]
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* BIT3: 3 bit ecc status
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* LIMIT2: value 2 (010b) up to limit
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* ERR7: value 7 (111b) up to error
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*/
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#define ECC_TYPE_BITMAP (0x0000FFFF)
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#define HAS_EXT_ECC_STATUS (1 << 16)
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#define HAS_EXT_ECC_SE01 (1 << 17)
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enum ecc_type {
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ECC_TYPE_ERR = 0,
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BIT3_LIMIT3_TO_6_ERR7,
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BIT2_LIMIT1_ERR2,
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BIT2_LIMIT1_ERR2_LIMIT3,
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BIT4_LIMIT3_TO_4_ERR15,
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BIT3_LIMIT3_TO_4_ERR7,
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BIT3_LIMIT5_ERR2,
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BIT4_LIMIT5_TO_7_ERR8_LIMIT_12,
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BIT4_LIMIT5_TO_7_ERR8,
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BIT2_LIMIT3_ERR2,
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BIT3_LIMIT3_LIMIT_5_ERR2,
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BIT4_LIMIT5_TO_8_ERR15,
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BIT3_LIMIT2_TO_6_ERR7,
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};
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extern __s32 spinand_check_ecc(enum ecc_type type, __u8 status);
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/**
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* name format:
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* 1. SIZE: size in bytes of each spare area
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* 2. OFF: offset in bytes without ecc protected
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* 3. LEN: ecc protected length in bytes
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*
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* [example] - MX35LF1GE4AB
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* SIZE16: each size of spare area is 16 bytes
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* OFF4: 4 bytes length without ecc protected
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* LEN12: 12 bytes under ecc protected
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*/
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enum ecc_protected_type {
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ECC_PROTECTED_TYPE = 0,
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SIZE16_OFF0_LEN16, /* all spare data are under ecc protection */
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SIZE16_OFF4_LEN12,
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SIZE16_OFF4_LEN4_OFF8,
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SIZE16_OFF4_LEN8_OFF4, /*compatible with GD5F1GQ4UBYIG@R6*/
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SIZE64_OFF32_LEN32,
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SIZE64_OFF8_LEN40_OFF16,
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SIZE256_OFF64_LEN64,
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SIZE16_OFF8_LEN16,
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};
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extern __s32 spinand_copy_to_spare(enum ecc_protected_type type, __u8 *to,
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__u8 *from, __u32 cnt);
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extern __s32 spinand_copy_from_spare(enum ecc_protected_type type, __u8 *to,
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__u8 *from, __u32 cnt);
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extern __u32 spinand_get_spare_size(__u32 type);
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#endif
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