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/*
* Error Corrected Code Controller (ECC) - System peripherals regsters.
* Based on AT91SAM9260 datasheet revision B.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef ATMEL_NAND_ECC_H
#define ATMEL_NAND_ECC_H
#define ATMEL_ECC_CR 0x00 /* Control register */
#define ATMEL_ECC_RST (1 << 0) /* Reset parity */
#define ATMEL_ECC_MR 0x04 /* Mode register */
#define ATMEL_ECC_PAGESIZE (3 << 0) /* Page Size */
#define ATMEL_ECC_PAGESIZE_528 (0)
#define ATMEL_ECC_PAGESIZE_1056 (1)
#define ATMEL_ECC_PAGESIZE_2112 (2)
#define ATMEL_ECC_PAGESIZE_4224 (3)
#define ATMEL_ECC_SR 0x08 /* Status register */
#define ATMEL_ECC_RECERR (1 << 0) /* Recoverable Error */
#define ATMEL_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */
#define ATMEL_ECC_MULERR (1 << 2) /* Multiple Errors */
#define ATMEL_ECC_PR 0x0c /* Parity register */
#define ATMEL_ECC_BITADDR (0xf << 0) /* Bit Error Address */
#define ATMEL_ECC_WORDADDR (0xfff << 4) /* Word Error Address */
#define ATMEL_ECC_NPR 0x10 /* NParity register */
#define ATMEL_ECC_NPARITY (0xffff << 0) /* NParity */
/* Register access macros for PMECC */
#define pmecc_readl(addr, reg) \
readl(&addr->reg)
#define pmecc_readb(addr, reg) \
readb(&addr->reg)
#define pmecc_writel(addr, reg, value) \
writel((value), &addr->reg)
/* PMECC Register Definitions */
#define PMECC_MAX_SECTOR_NUM 8
struct pmecc_regs {
u32 cfg; /* 0x00 PMECC Configuration Register */
u32 sarea; /* 0x04 PMECC Spare Area Size Register */
u32 saddr; /* 0x08 PMECC Start Address Register */
u32 eaddr; /* 0x0C PMECC End Address Register */
u32 clk; /* 0x10 PMECC Clock Control Register */
u32 ctrl; /* 0x14 PMECC Control Register */
u32 sr; /* 0x18 PMECC Status Register */
u32 ier; /* 0x1C PMECC Interrupt Enable Register */
u32 idr; /* 0x20 PMECC Interrupt Disable Register */
u32 imr; /* 0x24 PMECC Interrupt Mask Register */
u32 isr; /* 0x28 PMECC Interrupt Status Register */
u32 reserved0[5]; /* 0x2C-0x3C Reserved */
/* 0x40 + sector_num * (0x40), Redundancy Registers */
struct {
#ifdef CONFIG_SAMA5D2
u8 ecc[56]; /* PMECC Generated Redundancy Byte Per Sector */
u32 reserved1[2];
#else
u8 ecc[44]; /* PMECC Generated Redundancy Byte Per Sector */
u32 reserved1[5];
#endif
} ecc_port[PMECC_MAX_SECTOR_NUM];
/* 0x240 + sector_num * (0x40) Remainder Registers */
struct {
#ifdef CONFIG_SAMA5D2
u32 rem[16];
#else
u32 rem[12];
u32 reserved2[4];
#endif
} rem_port[PMECC_MAX_SECTOR_NUM];
u32 reserved3[16]; /* 0x440-0x47C Reserved */
};
/* For PMECC Configuration Register */
#define PMECC_CFG_BCH_ERR2 (0 << 0)
#define PMECC_CFG_BCH_ERR4 (1 << 0)
#define PMECC_CFG_BCH_ERR8 (2 << 0)
#define PMECC_CFG_BCH_ERR12 (3 << 0)
#define PMECC_CFG_BCH_ERR24 (4 << 0)
#define PMECC_CFG_BCH_ERR32 (5 << 0)
#define PMECC_CFG_SECTOR512 (0 << 4)
#define PMECC_CFG_SECTOR1024 (1 << 4)
#define PMECC_CFG_PAGE_1SECTOR (0 << 8)
#define PMECC_CFG_PAGE_2SECTORS (1 << 8)
#define PMECC_CFG_PAGE_4SECTORS (2 << 8)
#define PMECC_CFG_PAGE_8SECTORS (3 << 8)
#define PMECC_CFG_READ_OP (0 << 12)
#define PMECC_CFG_WRITE_OP (1 << 12)
#define PMECC_CFG_SPARE_ENABLE (1 << 16)
#define PMECC_CFG_SPARE_DISABLE (0 << 16)
#define PMECC_CFG_AUTO_ENABLE (1 << 20)
#define PMECC_CFG_AUTO_DISABLE (0 << 20)
/* For PMECC Clock Control Register */
#define PMECC_CLK_133MHZ (2 << 0)
/* For PMECC Control Register */
#define PMECC_CTRL_RST (1 << 0)
#define PMECC_CTRL_DATA (1 << 1)
#define PMECC_CTRL_USER (1 << 2)
#define PMECC_CTRL_ENABLE (1 << 4)
#define PMECC_CTRL_DISABLE (1 << 5)
/* For PMECC Status Register */
#define PMECC_SR_BUSY (1 << 0)
#define PMECC_SR_ENABLE (1 << 4)
/* PMERRLOC Register Definitions */
struct pmecc_errloc_regs {
u32 elcfg; /* 0x00 Error Location Configuration Register */
u32 elprim; /* 0x04 Error Location Primitive Register */
u32 elen; /* 0x08 Error Location Enable Register */
u32 eldis; /* 0x0C Error Location Disable Register */
u32 elsr; /* 0x10 Error Location Status Register */
u32 elier; /* 0x14 Error Location Interrupt Enable Register */
u32 elidr; /* 0x08 Error Location Interrupt Disable Register */
u32 elimr; /* 0x0C Error Location Interrupt Mask Register */
u32 elisr; /* 0x20 Error Location Interrupt Status Register */
u32 reserved0; /* 0x24 Reserved */
#ifdef CONFIG_SAMA5D2
u32 sigma[33]; /* 0x28-0xA8 Error Location Sigma Registers */
u32 el[32]; /* 0xAC-0x128 Error Location Registers */
/*
* 0x12C-0x1FC:
* Reserved for SAMA5D2.
*/
u32 reserved1[53];
#else
u32 sigma[25]; /* 0x28-0x88 Error Location Sigma Registers */
u32 el[24]; /* 0x8C-0xE8 Error Location Registers */
u32 reserved1[5]; /* 0xEC-0xFC Reserved */
#endif
/*
* SAMA5 chip HSMC registers start here. But for 9X5 chip it is just
* reserved.
*
* Offset 0x00-0xF8:
*/
u32 reserved2[63];
/*
* Offset 0xFC:
* PMECC version for AT91SAM9X5, AT91SAM9N12.
* HSMC version for SAMA5D3, SAMA5D4. Can refer as PMECC version.
*/
u32 version;
};
/* For Error Location Configuration Register */
#define PMERRLOC_ELCFG_SECTOR_512 (0 << 0)
#define PMERRLOC_ELCFG_SECTOR_1024 (1 << 0)
#define PMERRLOC_ELCFG_NUM_ERRORS(n) ((n) << 16)
/* For Error Location Disable Register */
#define PMERRLOC_DISABLE (1 << 0)
/* For Error Location Interrupt Status Register */
#ifdef CONFIG_SAMA5D2
#define PMERRLOC_ERR_NUM_MASK (0x3f << 8)
#else
#define PMERRLOC_ERR_NUM_MASK (0x1f << 8)
#endif
#define PMERRLOC_CALC_DONE (1 << 0)
/* PMECC IP version */
#define PMECC_VERSION_SAMA5D2 0x210
#define PMECC_VERSION_SAMA5D4 0x113
#define PMECC_VERSION_SAMA5D3 0x112
#define PMECC_VERSION_AT91SAM9N12 0x102
#define PMECC_VERSION_AT91SAM9X5 0x101
/* Galois field dimension */
#define PMECC_GF_DIMENSION_13 13
#define PMECC_GF_DIMENSION_14 14
/* Primitive Polynomial used by PMECC */
#define PMECC_GF_13_PRIMITIVE_POLY 0x201b
#define PMECC_GF_14_PRIMITIVE_POLY 0x4443
#define PMECC_INDEX_TABLE_SIZE_512 0x2000
#define PMECC_INDEX_TABLE_SIZE_1024 0x4000
#define PMECC_MAX_TIMEOUT_US (100 * 1000)
/* Reserved bytes in oob area */
#define PMECC_OOB_RESERVED_BYTES 2
#endif
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