[PATCH 3/9] rpmsg: virtio: add rpmsg channel device ops

Arnaud Pouliquen
2020-07-31T11:47:49Z

Implement the create and release of the RPMsg channel
for the RPMsg virtio bus.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
drivers/rpmsg/virtio_rpmsg_bus.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)

diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 736bc7b9dea8..910d30818901 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -176,6 +176,12 @@ static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data,
int len, u32 dst);
static int virtio_rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src,
u32 dst, void *data, int len);
+static struct rpmsg_device *
+ virtio_rpmsg_create_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
+static int virtio_rpmsg_release_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
+

static const struct rpmsg_endpoint_ops virtio_endpoint_ops = {
.destroy_ept = virtio_rpmsg_destroy_ept,
@@ -372,6 +378,8 @@ static int virtio_rpmsg_announce_destroy(struct rpmsg_device *rpdev)
}

static const struct rpmsg_device_ops virtio_rpmsg_ops = {
+ .create_channel = virtio_rpmsg_create_channel,
+ .release_channel = virtio_rpmsg_release_channel,
.create_ept = virtio_rpmsg_create_ept,
.announce_create = virtio_rpmsg_announce_create,
.announce_destroy = virtio_rpmsg_announce_destroy,
@@ -439,6 +447,25 @@ __rpmsg_create_channel(struct virtproc_info *vrp,
return rpdev;
}

+static struct rpmsg_device *
+ virtio_rpmsg_create_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo)
+{
+ struct virtio_rpmsg_channel *vch = to_virtio_rpmsg_channel(rpdev);
+ struct virtproc_info *vrp = vch->vrp;
+
+ return __rpmsg_create_channel(vrp, chinfo);
+}
+
+static int virtio_rpmsg_release_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo)
+{
+ struct virtio_rpmsg_channel *vch = to_virtio_rpmsg_channel(rpdev);
+ struct virtproc_info *vrp = vch->vrp;
+
+ return rpmsg_unregister_device(&vrp->vdev->dev, chinfo);
+}
+
/* super simple buffer "allocator" that is just enough for now */
static void *get_a_tx_buf(struct virtproc_info *vrp)
{
--
2.17.1