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/* $Id: memreg.h,v 1.1.1.1 2001-09-10 07:44:43 simons Exp $ */

#ifndef _SPARC_MEMREG_H

#define _SPARC_MEMREG_H

/* memreg.h:  Definitions of the values found in the synchronous

 *            and asynchronous memory error registers when a fault

 *            occurs on the sun4c.

 *

 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

 */

/* First the synchronous error codes, these are usually just

 * normal page faults.

 */

#define SUN4C_SYNC_WDRESET   0x0001  /* watchdog reset */

#define SUN4C_SYNC_SIZE      0x0002  /* bad access size? whuz this? */

#define SUN4C_SYNC_PARITY    0x0008  /* bad ram chips caused a parity error */

#define SUN4C_SYNC_SBUS      0x0010  /* the SBUS had some problems... */

#define SUN4C_SYNC_NOMEM     0x0020  /* translation to non-existent ram */

#define SUN4C_SYNC_PROT      0x0040  /* access violated pte protections */

#define SUN4C_SYNC_NPRESENT  0x0080  /* pte said that page was not present */

#define SUN4C_SYNC_BADWRITE  0x8000  /* while writing something went bogus */

#define SUN4C_SYNC_BOLIXED  \

        (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \

         SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY)

/* Now the asynchronous error codes, these are almost always produced

 * by the cache writing things back to memory and getting a bad translation.

 * Bad DVMA transactions can cause these faults too.

 */

#define SUN4C_ASYNC_BADDVMA 0x0010  /* error during DVMA access */

#define SUN4C_ASYNC_NOMEM   0x0020  /* write back pointed to bad phys addr */

#define SUN4C_ASYNC_BADWB   0x0080  /* write back points to non-present page */

#endif /* !(_SPARC_MEMREG_H) */