1 #ifndef _SPARC_MEMREG_H 2 #define _SPARC_MEMREG_H 3 /* memreg.h: Definitions of the values found in the synchronous 4 * and asynchronous memory error registers when a fault 5 * occurs on the sun4c. 6 * 7 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 8 */ 9 10 /* First the synchronous error codes, these are usually just 11 * normal page faults. 12 */ 13 14 #define SUN4C_SYNC_WDRESET 0x0001 /* watchdog reset */ 15 #define SUN4C_SYNC_SIZE 0x0002 /* bad access size? whuz this? */ 16 #define SUN4C_SYNC_PARITY 0x0008 /* bad ram chips caused a parity error */ 17 #define SUN4C_SYNC_SBUS 0x0010 /* the SBUS had some problems... */ 18 #define SUN4C_SYNC_NOMEM 0x0020 /* translation to non-existent ram */ 19 #define SUN4C_SYNC_PROT 0x0040 /* access violated pte protections */ 20 #define SUN4C_SYNC_NPRESENT 0x0080 /* pte said that page was not present */ 21 #define SUN4C_SYNC_BADWRITE 0x8000 /* while writing something went bogus */ 22 23 #define SUN4C_SYNC_BOLIXED \ 24 (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \ 25 SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY) 26 27 /* Now the asynchronous error codes, these are almost always produced 28 * by the cache writing things back to memory and getting a bad translation. 29 * Bad DVMA transactions can cause these faults too. 30 */ 31 32 #define SUN4C_ASYNC_BADDVMA 0x0010 /* error during DVMA access */ 33 #define SUN4C_ASYNC_NOMEM 0x0020 /* write back pointed to bad phys addr */ 34 #define SUN4C_ASYNC_BADWB 0x0080 /* write back points to non-present page */ 35 36 /* Memory parity error register with associated bit constants. */ 37 #ifndef __ASSEMBLY__ 38 extern __volatile__ unsigned long __iomem *sun4c_memerr_reg; 39 #endif 40 41 #define SUN4C_MPE_ERROR 0x80 /* Parity error detected. (ro) */ 42 #define SUN4C_MPE_MULTI 0x40 /* Multiple parity errors detected. (ro) */ 43 #define SUN4C_MPE_TEST 0x20 /* Write inverse parity. (rw) */ 44 #define SUN4C_MPE_CHECK 0x10 /* Enable parity checking. (rw) */ 45 #define SUN4C_MPE_ERR00 0x08 /* Parity error in bits 0-7. (ro) */ 46 #define SUN4C_MPE_ERR08 0x04 /* Parity error in bits 8-15. (ro) */ 47 #define SUN4C_MPE_ERR16 0x02 /* Parity error in bits 16-23. (ro) */ 48 #define SUN4C_MPE_ERR24 0x01 /* Parity error in bits 24-31. (ro) */ 49 #define SUN4C_MPE_ERRS 0x0F /* Bit mask for the error bits. (ro) */ 50 51 #endif /* !(_SPARC_MEMREG_H) */ 52