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sparc
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memreg.h

memreg.h 2.3 KB
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  1. #ifndef _SPARC_MEMREG_H
    2. 

  2. #define _SPARC_MEMREG_H
    3. 

  3. /* memreg.h:  Definitions of the values found in the synchronous
    4. 

  4.  *            and asynchronous memory error registers when a fault
    5. 

  5.  *            occurs on the sun4c.
    6. 

  6.  *
    7. 

  7.  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
    8. 

  8.  */
    9. 

  9. 

  10. /* First the synchronous error codes, these are usually just
    11. 

  11.  * normal page faults.
    12. 

  12.  */
    13. 

  13. 

  14. #define SUN4C_SYNC_WDRESET   0x0001  /* watchdog reset */
    15. 

  15. #define SUN4C_SYNC_SIZE      0x0002  /* bad access size? whuz this? */
    16. 

  16. #define SUN4C_SYNC_PARITY    0x0008  /* bad ram chips caused a parity error */
    17. 

  17. #define SUN4C_SYNC_SBUS      0x0010  /* the SBUS had some problems... */
    18. 

  18. #define SUN4C_SYNC_NOMEM     0x0020  /* translation to non-existent ram */
    19. 

  19. #define SUN4C_SYNC_PROT      0x0040  /* access violated pte protections */
    20. 

  20. #define SUN4C_SYNC_NPRESENT  0x0080  /* pte said that page was not present */
    21. 

  21. #define SUN4C_SYNC_BADWRITE  0x8000  /* while writing something went bogus */
    22. 

  22. 

  23. #define SUN4C_SYNC_BOLIXED  \
    24. 

  24.         (SUN4C_SYNC_WDRESET | SUN4C_SYNC_SIZE | SUN4C_SYNC_SBUS | \
    25. 

  25.          SUN4C_SYNC_NOMEM | SUN4C_SYNC_PARITY)
    26. 

  26. 

  27. /* Now the asynchronous error codes, these are almost always produced
    28. 

  28.  * by the cache writing things back to memory and getting a bad translation.
    29. 

  29.  * Bad DVMA transactions can cause these faults too.
    30. 

  30.  */
    31. 

  31. 

  32. #define SUN4C_ASYNC_BADDVMA 0x0010  /* error during DVMA access */
    33. 

  33. #define SUN4C_ASYNC_NOMEM   0x0020  /* write back pointed to bad phys addr */
    34. 

  34. #define SUN4C_ASYNC_BADWB   0x0080  /* write back points to non-present page */
    35. 

  35. 

  36. /* Memory parity error register with associated bit constants. */
    37. 

  37. #ifndef __ASSEMBLY__
    38. 

  38. extern __volatile__ unsigned long __iomem *sun4c_memerr_reg;
    39. 

  39. #endif
    40. 

  40. 

  41. #define	SUN4C_MPE_ERROR	0x80	/* Parity error detected. (ro) */
    42. 

  42. #define	SUN4C_MPE_MULTI	0x40	/* Multiple parity errors detected. (ro) */
    43. 

  43. #define	SUN4C_MPE_TEST	0x20	/* Write inverse parity. (rw) */
    44. 

  44. #define	SUN4C_MPE_CHECK	0x10	/* Enable parity checking. (rw) */
    45. 

  45. #define	SUN4C_MPE_ERR00	0x08	/* Parity error in bits 0-7. (ro) */
    46. 

  46. #define	SUN4C_MPE_ERR08	0x04	/* Parity error in bits 8-15. (ro) */
    47. 

  47. #define	SUN4C_MPE_ERR16	0x02	/* Parity error in bits 16-23. (ro) */
    48. 

  48. #define	SUN4C_MPE_ERR24	0x01	/* Parity error in bits 24-31. (ro) */
    49. 

  49. #define	SUN4C_MPE_ERRS	0x0F	/* Bit mask for the error bits. (ro) */
    50. 

  50. 

  51. #endif /* !(_SPARC_MEMREG_H) */
    52.