19 #define JZ_REG_NAND_ECC_CTRL	0x00
20 #define JZ_REG_NAND_DATA	0x04
21 #define JZ_REG_NAND_PAR0	0x08
22 #define JZ_REG_NAND_PAR1	0x0C
23 #define JZ_REG_NAND_PAR2	0x10
24 #define JZ_REG_NAND_IRQ_STAT	0x14
25 #define JZ_REG_NAND_IRQ_CTRL	0x18
26 #define JZ_REG_NAND_ERR(x)	(0x1C + ((x) << 2))
32 #define JZ_NAND_ECC_CTRL_ENABLE		BIT(0)
39 #define JZ_NAND_STATUS_ERROR		BIT(0)
42 	0xcd, 0x9d, 0x90, 0x58, 0xf4, 0x8b, 0xff, 0xb7, 0x6f
50 	writel(0, ecc->base + JZ_REG_NAND_IRQ_STAT);  in jz4740_ecc_reset()
79 	if (timeout == 0)  in jz4740_ecc_calculate()
86 	for (i = 0; i < params->bytes; ++i)  in jz4740_ecc_calculate()
90 	 * If the written data is completely 0xff, we also want to write 0xff as  in jz4740_ecc_calculate()
93 	if (memcmp(ecc_code, empty_block_ecc, sizeof(empty_block_ecc)) == 0)  in jz4740_ecc_calculate()
94 		memset(ecc_code, 0xff, sizeof(empty_block_ecc));  in jz4740_ecc_calculate()
96 	return 0;  in jz4740_ecc_calculate()
101 	int offset = index & 0x7;  in jz_nand_correct_data()
109 	mask ^= (data >> offset) & 0x1ff;  in jz_nand_correct_data()
110 	data &= ~(0x1ff << offset);  in jz_nand_correct_data()
113 	buf[index] = data & 0xff;  in jz_nand_correct_data()
114 	buf[index + 1] = (data >> 8) & 0xff;  in jz_nand_correct_data()
127 	for (i = 0; i < params->bytes; ++i)  in jz4740_ecc_correct()
138 	if (timeout == 0)  in jz4740_ecc_correct()
151 		for (i = 0; i < error_count; ++i) {  in jz4740_ecc_correct()
153 			index = ((error >> 16) & 0x1ff) - 1;  in jz4740_ecc_correct()
154 			if (index >= 0 && index < params->size)  in jz4740_ecc_correct()
155 				jz_nand_correct_data(buf, index, error & 0x1ff);  in jz4740_ecc_correct()
161 	return 0;  in jz4740_ecc_correct()
168 	writel(0, ecc->base + JZ_REG_NAND_IRQ_STAT);  in jz4740_ecc_disable()