summaryrefslogtreecommitdiffstats
path: root/include/asm-mips/dec/ecc.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-mips/dec/ecc.h')
-rw-r--r--include/asm-mips/dec/ecc.h55
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 0000000..724908b
--- /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 */
OpenPOWER on IntegriCloud