| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * include/asm-mips/dec/ecc.h |
| 3 | * |
| 4 | * ECC handling logic definitions common to DECstation/DECsystem |
| 5 | * 5000/200 (KN02), 5000/240 (KN03), 5000/260 (KN05) and |
| 6 | * DECsystem 5900 (KN03), 5900/260 (KN05) systems. |
| 7 | * |
| 8 | * Copyright (C) 2003 Maciej W. Rozycki |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License |
| 12 | * as published by the Free Software Foundation; either version |
| 13 | * 2 of the License, or (at your option) any later version. |
| 14 | */ |
| 15 | #ifndef __ASM_MIPS_DEC_ECC_H |
| 16 | #define __ASM_MIPS_DEC_ECC_H |
| 17 | |
| 18 | /* |
| 19 | * Error Address Register bits. |
| 20 | * The register is r/wc -- any write clears it. |
| 21 | */ |
| 22 | #define KN0X_EAR_VALID (1<<31) /* error data valid, bus IRQ */ |
| 23 | #define KN0X_EAR_CPU (1<<30) /* CPU/DMA transaction */ |
| 24 | #define KN0X_EAR_WRITE (1<<29) /* write/read transaction */ |
| 25 | #define KN0X_EAR_ECCERR (1<<28) /* ECC/timeout or overrun */ |
| 26 | #define KN0X_EAR_RES_27 (1<<27) /* unused */ |
| 27 | #define KN0X_EAR_ADDRESS (0x7ffffff<<0) /* address involved */ |
| 28 | |
| 29 | /* |
| 30 | * Error Syndrome Register bits. |
| 31 | * The register is frozen when EAR.VALID is set, otherwise it records bits |
| 32 | * from the last memory read. The register is r/wc -- any write clears it. |
| 33 | */ |
| 34 | #define KN0X_ESR_VLDHI (1<<31) /* error data valid hi word */ |
| 35 | #define KN0X_ESR_CHKHI (0x7f<<24) /* check bits read from mem */ |
| 36 | #define KN0X_ESR_SNGHI (1<<23) /* single/double bit error */ |
| 37 | #define KN0X_ESR_SYNHI (0x7f<<16) /* syndrome from ECC logic */ |
| 38 | #define KN0X_ESR_VLDLO (1<<15) /* error data valid lo word */ |
| 39 | #define KN0X_ESR_CHKLO (0x7f<<8) /* check bits read from mem */ |
| 40 | #define KN0X_ESR_SNGLO (1<<7) /* single/double bit error */ |
| 41 | #define KN0X_ESR_SYNLO (0x7f<<0) /* syndrome from ECC logic */ |
| 42 | |
| 43 | |
| 44 | #ifndef __ASSEMBLY__ |
| 45 | |
| 46 | #include <linux/interrupt.h> |
| 47 | |
| 48 | struct pt_regs; |
| 49 | |
| 50 | extern void dec_ecc_be_init(void); |
| 51 | extern int dec_ecc_be_handler(struct pt_regs *regs, int is_fixup); |
| 52 | extern irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id); |
| 53 | #endif |
| 54 | |
| 55 | #endif /* __ASM_MIPS_DEC_ECC_H */ |