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
7 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
10 /* First the synchronous error codes, these are usually just
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 */
23 #define SUN4C_SYNC_BOLIXED \
24 (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \
25 SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY)
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.
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 */
36 /* Memory parity error register with associated bit constants. */
38 extern __volatile__ unsigned long __iomem *sun4c_memerr_reg;
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) */
51 #endif /* !(_SPARC_MEMREG_H) */