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kernel/linux-rt-4.4.41/arch/sparc/include/asm/estate.h 2.2 KB
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  #ifndef _SPARC64_ESTATE_H
  #define _SPARC64_ESTATE_H
  
  /* UltraSPARC-III E-cache Error Enable */
  #define ESTATE_ERROR_FMT	0x0000000000040000 /* Force MTAG ECC		*/
  #define ESTATE_ERROR_FMESS	0x000000000003c000 /* Forced MTAG ECC val	*/
  #define ESTATE_ERROR_FMD	0x0000000000002000 /* Force DATA ECC		*/
  #define ESTATE_ERROR_FDECC	0x0000000000001ff0 /* Forced DATA ECC val	*/
  #define ESTATE_ERROR_UCEEN	0x0000000000000008 /* See below			*/
  #define ESTATE_ERROR_NCEEN	0x0000000000000002 /* See below			*/
  #define ESTATE_ERROR_CEEN	0x0000000000000001 /* See below			*/
  
  /* UCEEN enables the fast_ECC_error trap for: 1) software correctable E-cache
   * errors 2) uncorrectable E-cache errors.  Such events only occur on reads
   * of the E-cache by the local processor for: 1) data loads 2) instruction
   * fetches 3) atomic operations.  Such events _cannot_ occur for: 1) merge
   * 2) writeback 2) copyout.  The AFSR bits associated with these traps are
   * UCC and UCU.
   */
  
  /* NCEEN enables instruction_access_error, data_access_error, and ECC_error traps
   * for uncorrectable ECC errors and system errors.
   *
   * Uncorrectable system bus data error or MTAG ECC error, system bus TimeOUT,
   * or system bus BusERR:
   * 1) As the result of an instruction fetch, will generate instruction_access_error
   * 2) As the result of a load etc. will generate data_access_error.
   * 3) As the result of store merge completion, writeback, or copyout will
   *    generate a disrupting ECC_error trap.
   * 4) As the result of such errors on instruction vector fetch can generate any
   *    of the 3 trap types.
   *
   * The AFSR bits associated with these traps are EMU, EDU, WDU, CPU, IVU, UE,
   * BERR, and TO.
   */
  
  /* CEEN enables the ECC_error trap for hardware corrected ECC errors.  System bus
   * reads resulting in a hardware corrected data or MTAG ECC error will generate an
   * ECC_error disrupting trap with this bit enabled.
   *
   * This same trap will also be generated when a hardware corrected ECC error results
   * during store merge, writeback, and copyout operations.
   */
  
  /* In general, if the trap enable bits above are disabled the AFSR bits will still
   * log the events even though the trap will not be generated by the processor.
   */
  
  #endif /* _SPARC64_ESTATE_H */