| /* $Id: memreg.h,v 1.8 1996/08/29 09:48:23 davem Exp $ */ |
| #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 *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) */ |
