summaryrefslogtreecommitdiffstats
path: root/arch/sparc/include/asm/memreg.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/include/asm/memreg.h')
-rw-r--r--arch/sparc/include/asm/memreg.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/memreg.h b/arch/sparc/include/asm/memreg.h
new file mode 100644
index 000000000000..845ad2b39183
--- /dev/null
+++ b/arch/sparc/include/asm/memreg.h
@@ -0,0 +1,51 @@
+#ifndef _SPARC_MEMREG_H
+#define _SPARC_MEMREG_H
+/* memreg.h: Definitions of the values found in the synchronous
+ * and asynchronous memory error registers when a fault
+ * occurs on the sun4c.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+/* First the synchronous error codes, these are usually just
+ * normal page faults.
+ */
+
+#define SUN4C_SYNC_WDRESET 0x0001 /* watchdog reset */
+#define SUN4C_SYNC_SIZE 0x0002 /* bad access size? whuz this? */
+#define SUN4C_SYNC_PARITY 0x0008 /* bad ram chips caused a parity error */
+#define SUN4C_SYNC_SBUS 0x0010 /* the SBUS had some problems... */
+#define SUN4C_SYNC_NOMEM 0x0020 /* translation to non-existent ram */
+#define SUN4C_SYNC_PROT 0x0040 /* access violated pte protections */
+#define SUN4C_SYNC_NPRESENT 0x0080 /* pte said that page was not present */
+#define SUN4C_SYNC_BADWRITE 0x8000 /* while writing something went bogus */
+
+#define SUN4C_SYNC_BOLIXED \
+ (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \
+ SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY)
+
+/* Now the asynchronous error codes, these are almost always produced
+ * by the cache writing things back to memory and getting a bad translation.
+ * Bad DVMA transactions can cause these faults too.
+ */
+
+#define SUN4C_ASYNC_BADDVMA 0x0010 /* error during DVMA access */
+#define SUN4C_ASYNC_NOMEM 0x0020 /* write back pointed to bad phys addr */
+#define SUN4C_ASYNC_BADWB 0x0080 /* write back points to non-present page */
+
+/* Memory parity error register with associated bit constants. */
+#ifndef __ASSEMBLY__
+extern __volatile__ unsigned long __iomem *sun4c_memerr_reg;
+#endif
+
+#define SUN4C_MPE_ERROR 0x80 /* Parity error detected. (ro) */
+#define SUN4C_MPE_MULTI 0x40 /* Multiple parity errors detected. (ro) */
+#define SUN4C_MPE_TEST 0x20 /* Write inverse parity. (rw) */
+#define SUN4C_MPE_CHECK 0x10 /* Enable parity checking. (rw) */
+#define SUN4C_MPE_ERR00 0x08 /* Parity error in bits 0-7. (ro) */
+#define SUN4C_MPE_ERR08 0x04 /* Parity error in bits 8-15. (ro) */
+#define SUN4C_MPE_ERR16 0x02 /* Parity error in bits 16-23. (ro) */
+#define SUN4C_MPE_ERR24 0x01 /* Parity error in bits 24-31. (ro) */
+#define SUN4C_MPE_ERRS 0x0F /* Bit mask for the error bits. (ro) */
+
+#endif /* !(_SPARC_MEMREG_H) */