root/include/asm-sparc/memreg.h

/* */

INCLUDED FROM

   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   0x1  /* watchdog reset, only the prom sees this */
  15 #define SUN4C_SYNC_SIZE      0x2  /* bad access size? whuz this? */
  16 #define SUN4C_SYNC_PARITY    0x8  /* bad ram chips caused a parity error */
  17 #define SUN4C_SYNC_SBUS      0x10 /* the SBUS had some problems... */
  18 #define SUN4C_SYNC_NOMEM     0x20 /* translation pointed to non-existant ram */
  19 #define SUN4C_SYNC_PROT      0x40 /* access violated pte protection settings */
  20 #define SUN4C_SYNC_NPRESENT  0x80 /* pte said that page was not present */
  21 #define SUN4C_SYNC_BADWRITE  0x8000  /* while writing something went bogus */
  22 
  23 /* Now the asynchronous error codes, these are almost always produced
  24  * by the cache writing things back to memory and getting a bad translation.
  25  * Bad DVMA transactions can cause these faults too.
  26  */
  27 
  28 #define SUN4C_ASYNC_BADDVMA  0x10 /* error during DVMA access */
  29 #define SUN4C_ASYNC_NOMEM    0x20 /* write back pointed to bad phys addr */
  30 #define SUN4C_ASYNC_BADWB    0x80 /* write back points to non-present page */
  31 
  32 /* These are the values passed as the first arguement to the fault
  33  * entry c-code from the assembly entry points.
  34  */
  35 #define FAULT_ASYNC          0x0
  36 #define FAULT_SYNC           0x1
  37 
  38 #endif /* !(_SPARC_MEMREG_H) */

/* */