1 files changed, 55 insertions, 0 deletions

diff --git a/include/asm-mips/dec/ecc.h b/include/asm-mips/dec/ecc.h
new file mode 100644
index 000000000000..724908b0bf13
--- /dev/null
+++ b/include/asm-mips/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, struct pt_regs *regs);
+#endif
+
+#endif /* __ASM_MIPS_DEC_ECC_H */