src/vendorcode/amd/agesa/f15tn/Proc/Fch/Common/MemLib.c

/* $NoKeywords:$ */
/**
 * @file
 *
 * FCH memory access lib
 *
 *
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:     AGESA
 * @e sub-project: FCH
 * @e \$Revision: 63425 $   @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
 *
 */
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*/
#include "FchPlatform.h"
#include "Ids.h"
#define FILECODE PROC_FCH_COMMON_MEMLIB_FILECODE


/**
 * ReadMem - Read FCH BAR Memory
 *
 * @param[in] Address    - Memory BAR address
 * @param[in] OpFlag     - Access width
 * @param[in] *ValuePtr  - In/Out value pointer
 *
 */
VOID
ReadMem (
  IN  UINT32     Address,
  IN  UINT8      OpFlag,
  IN  VOID       *ValuePtr
  )
{
  OpFlag = OpFlag & 0x7f;

  switch ( OpFlag ) {
  case AccessWidth8:
    *((UINT8*)ValuePtr) = *((UINT8*) ((UINTN)Address));
    break;

  case AccessWidth16:
    *((UINT16*)ValuePtr) = *((UINT16*) ((UINTN)Address));
    break;

  case AccessWidth32:
    *((UINT32*)ValuePtr) = *((UINT32*) ((UINTN)Address));
    break;

  default:
    ASSERT (FALSE);
    break;
  }
}

/**
 * WriteMem - Write FCH BAR Memory
 *
 * @param[in] Address    - Memory BAR address
 * @param[in] OpFlag     - Access width
 * @param[in] *ValuePtr  - In/Out Value pointer
 *
 */
VOID
WriteMem (
  IN  UINT32     Address,
  IN  UINT8      OpFlag,
  IN  VOID       *ValuePtr
  )
{
  OpFlag = OpFlag & 0x7f;

  switch ( OpFlag ) {
  case AccessWidth8 :
    *((UINT8*) ((UINTN)Address)) = *((UINT8*)ValuePtr);
    break;

  case AccessWidth16:
    *((UINT16*) ((UINTN)Address)) = *((UINT16*)ValuePtr);
    break;

  case AccessWidth32:
    *((UINT32*) ((UINTN)Address)) = *((UINT32*)ValuePtr);
    break;

  default:
    ASSERT (FALSE);
    break;
  }
}

/**
 * RwMem - Read & Write FCH BAR Memory
 *
 * @param[in] Address    - Memory BAR address
 * @param[in] OpFlag     - Access width
 * @param[in] Mask       - Mask Value of data
 * @param[in] Data       - Write data
 *
 */
VOID
RwMem (
  IN  UINT32     Address,
  IN  UINT8      OpFlag,
  IN  UINT32     Mask,
  IN  UINT32     Data
  )
{
  UINT32 Result;

  ReadMem (Address, OpFlag, &Result);
  Result = (Result & Mask) | Data;
  WriteMem (Address, OpFlag, &Result);
}