PCICFG_COMMAND_BUS_MASTER
#define PCICFG_COMMAND_BUS_MASTER (1<<2)
val &= ~PCICFG_COMMAND_BUS_MASTER;
val |= PCICFG_COMMAND_BUS_MASTER;
val |= PCICFG_COMMAND_BUS_MASTER;
RESET_FLAGS( val, PCICFG_COMMAND_BUS_MASTER );
if( 0 == GET_FLAGS( val, PCICFG_COMMAND_BUS_MASTER ) )
SET_FLAGS( val, PCICFG_COMMAND_BUS_MASTER );