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1da177e4 LT |
1 | /* $Id: memreg.h,v 1.8 1996/08/29 09:48:23 davem Exp $ */ |
2 | #ifndef _SPARC_MEMREG_H | |
3 | #define _SPARC_MEMREG_H | |
4 | /* memreg.h: Definitions of the values found in the synchronous | |
5 | * and asynchronous memory error registers when a fault | |
6 | * occurs on the sun4c. | |
7 | * | |
8 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
9 | */ | |
10 | ||
11 | /* First the synchronous error codes, these are usually just | |
12 | * normal page faults. | |
13 | */ | |
14 | ||
15 | #define SUN4C_SYNC_WDRESET 0x0001 /* watchdog reset */ | |
16 | #define SUN4C_SYNC_SIZE 0x0002 /* bad access size? whuz this? */ | |
17 | #define SUN4C_SYNC_PARITY 0x0008 /* bad ram chips caused a parity error */ | |
18 | #define SUN4C_SYNC_SBUS 0x0010 /* the SBUS had some problems... */ | |
19 | #define SUN4C_SYNC_NOMEM 0x0020 /* translation to non-existent ram */ | |
20 | #define SUN4C_SYNC_PROT 0x0040 /* access violated pte protections */ | |
21 | #define SUN4C_SYNC_NPRESENT 0x0080 /* pte said that page was not present */ | |
22 | #define SUN4C_SYNC_BADWRITE 0x8000 /* while writing something went bogus */ | |
23 | ||
24 | #define SUN4C_SYNC_BOLIXED \ | |
25 | (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \ | |
26 | SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY) | |
27 | ||
28 | /* Now the asynchronous error codes, these are almost always produced | |
29 | * by the cache writing things back to memory and getting a bad translation. | |
30 | * Bad DVMA transactions can cause these faults too. | |
31 | */ | |
32 | ||
33 | #define SUN4C_ASYNC_BADDVMA 0x0010 /* error during DVMA access */ | |
34 | #define SUN4C_ASYNC_NOMEM 0x0020 /* write back pointed to bad phys addr */ | |
35 | #define SUN4C_ASYNC_BADWB 0x0080 /* write back points to non-present page */ | |
36 | ||
37 | /* Memory parity error register with associated bit constants. */ | |
38 | #ifndef __ASSEMBLY__ | |
a3297296 | 39 | extern __volatile__ unsigned long __iomem *sun4c_memerr_reg; |
1da177e4 LT |
40 | #endif |
41 | ||
42 | #define SUN4C_MPE_ERROR 0x80 /* Parity error detected. (ro) */ | |
43 | #define SUN4C_MPE_MULTI 0x40 /* Multiple parity errors detected. (ro) */ | |
44 | #define SUN4C_MPE_TEST 0x20 /* Write inverse parity. (rw) */ | |
45 | #define SUN4C_MPE_CHECK 0x10 /* Enable parity checking. (rw) */ | |
46 | #define SUN4C_MPE_ERR00 0x08 /* Parity error in bits 0-7. (ro) */ | |
47 | #define SUN4C_MPE_ERR08 0x04 /* Parity error in bits 8-15. (ro) */ | |
48 | #define SUN4C_MPE_ERR16 0x02 /* Parity error in bits 16-23. (ro) */ | |
49 | #define SUN4C_MPE_ERR24 0x01 /* Parity error in bits 24-31. (ro) */ | |
50 | #define SUN4C_MPE_ERRS 0x0F /* Bit mask for the error bits. (ro) */ | |
51 | ||
52 | #endif /* !(_SPARC_MEMREG_H) */ |