/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * include/asm-mips/dec/ecc.h * * ECC handling logic definitions common to DECstation/DECsystem * 5000/200 (KN02), 5000/240 (KN03), 5000/260 (KN05) and * DECsystem 5900 (KN03), 5900/260 (KN05) systems. * * Copyright (C) 2003 Maciej W. Rozycki */ #ifndef __ASM_MIPS_DEC_ECC_H #define __ASM_MIPS_DEC_ECC_H /* * Error Address Register bits. * The register is r/wc -- any write clears it. */ #define KN0X_EAR_VALID (1<<31) /* error data valid, bus IRQ */ #define KN0X_EAR_CPU (1<<30) /* CPU/DMA transaction */ #define KN0X_EAR_WRITE (1<<29) /* write/read transaction */ #define KN0X_EAR_ECCERR (1<<28) /* ECC/timeout or overrun */ #define KN0X_EAR_RES_27 (1<<27) /* unused */ #define KN0X_EAR_ADDRESS (0x7ffffff<<0) /* address involved */ /* * Error Syndrome Register bits. * The register is frozen when EAR.VALID is set, otherwise it records bits * from the last memory read. The register is r/wc -- any write clears it. */ #define KN0X_ESR_VLDHI (1<<31) /* error data valid hi word */ #define KN0X_ESR_CHKHI (0x7f<<24) /* check bits read from mem */ #define KN0X_ESR_SNGHI (1<<23) /* single/double bit error */ #define KN0X_ESR_SYNHI (0x7f<<16) /* syndrome from ECC logic */ #define KN0X_ESR_VLDLO (1<<15) /* error data valid lo word */ #define KN0X_ESR_CHKLO (0x7f<<8) /* check bits read from mem */ #define KN0X_ESR_SNGLO (1<<7) /* single/double bit error */ #define KN0X_ESR_SYNLO (0x7f<<0) /* syndrome from ECC logic */ #ifndef __ASSEMBLY__ #include <linux/interrupt.h> struct pt_regs; extern void dec_ecc_be_init(void); extern int dec_ecc_be_handler(struct pt_regs *regs, int is_fixup); extern irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id); #endif #endif /* __ASM_MIPS_DEC_ECC_H */