3 ms·
No. There is no direct memory access (DMA) in the USB 3.0 spec. It would be a security nightmare.
by windsurfer 17y ago
No. There is no direct memory access (DMA) in the USB 3.0 spec. It would be a security nightmare.
- bdonlan 17y agoI'm sure DMA happens between the controller and host - there's no way they could achieve those speeds with PIO. And DMA has nothing to do with pipelining - the controller could easily be programmed with a list of buffers in which to place USB responses.