PciAtuRegs
volatile PciAtuRegs* atu = (PciAtuRegs*)(fDbiBase + kPciAtuOffset
+ (2 * index + direction) * sizeof(PciAtuRegs));
volatile PciAtuRegs* atu = (PciAtuRegs*)(fDbiBase
+ kPciAtuOffset + (2 * index + direction) * sizeof(PciAtuRegs));