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   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 */
22
23#define SUN4C_SYNC_BOLIXED  \
24        (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \
25         SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY)
26
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.
30 */
31
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 */
35
36/* Memory parity error register with associated bit constants. */
37#ifndef __ASSEMBLY__
38extern __volatile__ unsigned long __iomem *sun4c_memerr_reg;
39#endif
40
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) */
50
51#endif /* !(_SPARC_MEMREG_H) */