diff options
Diffstat (limited to 'arch/mips/include/asm/dec/ecc.h')
| -rw-r--r-- | arch/mips/include/asm/dec/ecc.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/include/asm/dec/ecc.h b/arch/mips/include/asm/dec/ecc.h new file mode 100644 index 0000000..707ffdb --- /dev/null +++ b/arch/mips/include/asm/dec/ecc.h @@ -0,0 +1,55 @@ +/* + * 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 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#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 */ |
