Add Rpmsg-Port-SPI transport layer.
Rpmsg Port SPI is a new rpmsg transport layer based on the Rpmsg Port,
it provides the capability for two SPI-connected (and two extra GPIO)
chips to communicate with each other using Rpmsg.
All already implemented Rpmsg Services can be used with this new transport
layer without any modifications.
Signed-off-by: liaoao <liaoao@xiaomi.com>
Rpmsg Physical Transport Layer is a new rpmsg transport, it's a
common part for the physical communication based rpmsg transport
layers such as Rpmsg-SPI and Rpmsg-Uart.
It implements three common parts:
1. Implement the NuttX and OpenAMP rpmsg frameworks' ops and the
rpmsg name service;
2. The buffer management and provide some APIs to lower layer to use;
Signed-off-by: liaoao <liaoao@xiaomi.com>
Rpmsg VirtIO is a virtio transport implementation for Rpmsg, and
it's different to the rptun framework.
rpmsg_virtio.c implements the rpmsg virtio transport layer by itself
to avoid use the remoteproc implementation in OpenAMP to save code
size, so it can be treated as a lightweight version of rptun.
Therefore, rpmsg_virtio.c only support the communication feature and
do not support contoll the life cycle of the remote core.
But benefit by it's small footprint, it can be used in the chips with
small flash.
Signed-off-by: Yongrong Wang <wangyongrong@xiaomi.com>
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
It should be possible to use ping without rptun being enabled, so striped rptun_ping out of rptun and rename to rpmsg_ping.
Signed-off-by: wangyongrong <wangyongrong@xiaomi.com>
nuttx/driver/rpmsg: new folder, extract common rpmsg api in rptun.c to rpmsg.c.
rpmsg provide rpmsg_ops to each backend for specific implementation.
Signed-off-by: wangyongrong <wangyongrong@xiaomi.com>
