include/asm-sparc/memreg.h

   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__
  39 extern __volatile__ unsigned long __iomem *sun4c_memerr_reg;
  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) */