Signed-off-by: Sjur Brændeland <sjur.brandel...@stericsson.com> --- >> Please pick the virtio spec from >> >> https://github.com/rustyrussell/virtio-spec >> >> and update the spec with info for remote-proc. > >Hi Sjur, > >I didn't hear back from you on this.. >
Hi Amit Sorry for the delay. I've had this ready for a while waiting for go-ahead from our legal dept, and then it got stuck in my backlog. Anyway, here is a stab at describing the rproc serial device. Feedback is welcomed. Thanks, Sjur virtio-spec.lyx | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/virtio-spec.lyx b/virtio-spec.lyx index 83f2771..bbb5c75 100644 --- a/virtio-spec.lyx +++ b/virtio-spec.lyx @@ -9079,6 +9079,64 @@ For MMC devices (inquiry type 5) there would be some overlap between this \end_deeper \begin_layout Chapter* +Appendix J: Rproc Serial Device +\end_layout + +\begin_layout Standard +The Remoteproc Serial Device device is used when communicating with a remote + processor. + The remote processor may be a modem communicating over a shared memory + interface, or a CPU in an asymmetric multi-processing (AMP) configuration. + The Remoteproc Serial Device provides a simple device for data IO. + A device has one port and a single pair of virtqueues for input and output. + Empty buffers are placed in one virtqueue for receiving packets, and outgoing + packets are enqueued into another for transmission. +\end_layout + +\begin_layout Section* +Configuration +\end_layout + +\begin_layout Description +Subsystem +\begin_inset space ~ +\end_inset + +Device +\begin_inset space ~ +\end_inset + +ID 11 +\end_layout + +\begin_deeper +\begin_layout Description +Virtqueues 0:receiveq(port0). + 1:transmitq(port0), +\end_layout + +\begin_layout Section* +Device Initialization +\end_layout + +\begin_layout Enumerate +The receiveq for each port is populated with one or more receive buffers. +\end_layout + +\begin_layout Section* +Device Operation +\end_layout + +\begin_layout Enumerate +For output, a buffer containing the characters is placed in the port's transmitq. +\end_layout + +\begin_layout Enumerate +Inbound messages are placed in the receiveq and signalled by an interrupt. +\end_layout + +\end_deeper +\begin_layout Chapter* Appendix X: virtio-mmio \end_layout -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
