1157     type Backend = MmioBackend;
1167 pub struct MmioBackend;  struct
1169 impl IoBackend for MmioBackend {  implementation
1213 impl_mmio_io_capable!(MmioBackend, u8, readb, writeb);
1214 impl_mmio_io_capable!(MmioBackend, u16, readw, writew);
1215 impl_mmio_io_capable!(MmioBackend, u32, readl, writel);
1218 impl_mmio_io_capable!(MmioBackend, u64, readq, writeq);
1220 impl IoCopyable for MmioBackend {  implementation
1266         MmioBackend::as_ptr(view.0)  in as_ptr()
1275         RelaxedMmio(unsafe { MmioBackend::project_view(view.0, ptr) })  in project_view()
1536             IoSysMap::Io(l) => MmioBackend::as_ptr(l),  in as_ptr()
1548             IoSysMap::Io(l) => IoSysMap::Io(unsafe { MmioBackend::project_view(l, ptr) }),  in project_view()
1557     MmioBackend: IoCapable<T>,
1563             IoSysMap::Io(l) => MmioBackend::io_read(l),  in io_read()
1571             IoSysMap::Io(l) => MmioBackend::io_write(l, value),  in io_write()
1582             IoSysMap::Io(l) => unsafe { MmioBackend::copy_from_io(l, buffer) },  in copy_from_io()
1592             IoSysMap::Io(l) => unsafe { MmioBackend::copy_to_io(l, buffer) },  in copy_to_io()
1601             IoSysMap::Io(l) => MmioBackend::copy_read(l),  in copy_read()
1609             IoSysMap::Io(l) => MmioBackend::copy_write(l, value),  in copy_write()