arch/tile/include/hv/drv_mshim_intf.h

   1 /*
   2  * Copyright 2011 Tilera Corporation. All Rights Reserved.
   3  *
   4  *   This program is free software; you can redistribute it and/or
   5  *   modify it under the terms of the GNU General Public License
   6  *   as published by the Free Software Foundation, version 2.
   7  *
   8  *   This program is distributed in the hope that it will be useful, but
   9  *   WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  11  *   NON INFRINGEMENT.  See the GNU General Public License for
  12  *   more details.
  13  */
  14
  15 /**
  16  * @file drv_mshim_intf.h
  17  * Interface definitions for the Linux EDAC memory controller driver.
  18  */
  19
  20 #ifndef _SYS_HV_INCLUDE_DRV_MSHIM_INTF_H
  21 #define _SYS_HV_INCLUDE_DRV_MSHIM_INTF_H
  22
  23 /** Number of memory controllers in the public API. */
  24 #define TILE_MAX_MSHIMS 4
  25
  26 /** Memory info under each memory controller. */
  27 struct mshim_mem_info
  28 {
  29   uint64_t mem_size;     /**< Total memory size in bytes. */
  30   uint8_t mem_type;      /**< Memory type, DDR2 or DDR3. */
  31   uint8_t mem_ecc;       /**< Memory supports ECC. */
  32 };
  33
  34 /**
  35  * DIMM error structure.
  36  * For now, only correctable errors are counted and the mshim doesn't record
  37  * the error PA. HV takes panic upon uncorrectable errors.
  38  */
  39 struct mshim_mem_error
  40 {
  41   uint32_t sbe_count;     /**< Number of single-bit errors. */
  42 };
  43
  44 /** Read this offset to get the memory info per mshim. */
  45 #define MSHIM_MEM_INFO_OFF 0x100
  46
  47 /** Read this offset to check DIMM error. */
  48 #define MSHIM_MEM_ERROR_OFF 0x200
  49
  50 #endif /* _SYS_HV_INCLUDE_DRV_MSHIM_INTF_H */