PeiSmbusLib.c

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#include "InternalSmbusLib.h"
 
EFI_PEI_SMBUS2_PPI *
InternalGetSmbusPpi (
  VOID
  )
{
  EFI_STATUS          Status;
  EFI_PEI_SMBUS2_PPI  *SmbusPpi;
 
  Status = PeiServicesLocatePpi (&gEfiPeiSmbus2PpiGuid, 0, NULL, (VOID **)&SmbusPpi);
  ASSERT_EFI_ERROR (Status);
  ASSERT (SmbusPpi != NULL);
 
  return SmbusPpi;
}
 
UINTN
InternalSmBusExec (
  IN     EFI_SMBUS_OPERATION  SmbusOperation,
  IN     UINTN                SmBusAddress,
  IN     UINTN                Length,
  IN OUT VOID                 *Buffer,
  OUT RETURN_STATUS           *Status        OPTIONAL
  )
{
  EFI_PEI_SMBUS2_PPI        *SmbusPpi;
  RETURN_STATUS             ReturnStatus;
  EFI_SMBUS_DEVICE_ADDRESS  SmbusDeviceAddress;
 
  SmbusPpi                              = InternalGetSmbusPpi ();
  SmbusDeviceAddress.SmbusDeviceAddress = SMBUS_LIB_SLAVE_ADDRESS (SmBusAddress);
 
  ReturnStatus = SmbusPpi->Execute (
                             SmbusPpi,
                             SmbusDeviceAddress,
                             SMBUS_LIB_COMMAND (SmBusAddress),
                             SmbusOperation,
                             SMBUS_LIB_PEC (SmBusAddress),
                             &Length,
                             Buffer
                             );
  if (Status != NULL) {
    *Status = ReturnStatus;
  }
 
  return Length;
}