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| author | Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> | 2021-03-11 15:04:11 +0100 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-03-17 14:16:36 -0500 |
| commit | b4ce7e2ebcc52ff907c5a922bf19c3dfa39dddb1 (patch) | |
| tree | e98843f646f5c09539eaf9c989118e15e06c7469 /drivers/rpmsg/qcom_glink_native.c | |
| parent | 809328b40cfb152f75541aa3dcbbe4903098963b (diff) | |
| download | linux-b4ce7e2ebcc52ff907c5a922bf19c3dfa39dddb1.tar.bz2 | |
rpmsg: char: Use rpmsg_sendto to specify the message destination address
When the endpoint device is created by the application, a destination
address is specified in the rpmsg_channel_info structure. Since the
rpmsg_endpoint structure does not store the destination address,
this destination address must be specified when sending a message.
Replaces rpmsg_send with rpmsg_sendto to allow to specify the
destination address. This implementation is requested for compatibly with
some rpmsg backends like the virtio backend.
For this, the GLINK an SMD drivers have been updated to support the
rpmsg_sendto, even if the destination address is ignored for these
backends. For these drivers, the rpmsg_send and rpmsg_trysend ops are
preserved to avoid breaking the legacy.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210311140413.31725-5-arnaud.pouliquen@foss.st.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg/qcom_glink_native.c')
| -rw-r--r-- | drivers/rpmsg/qcom_glink_native.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 27a05167c18c..edae0c9a8236 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1332,6 +1332,20 @@ static int qcom_glink_trysend(struct rpmsg_endpoint *ept, void *data, int len) return __qcom_glink_send(channel, data, len, false); } +static int qcom_glink_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +{ + struct glink_channel *channel = to_glink_channel(ept); + + return __qcom_glink_send(channel, data, len, true); +} + +static int qcom_glink_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +{ + struct glink_channel *channel = to_glink_channel(ept); + + return __qcom_glink_send(channel, data, len, false); +} + /* * Finds the device_node for the glink child interested in this channel. */ @@ -1364,7 +1378,9 @@ static const struct rpmsg_device_ops glink_device_ops = { static const struct rpmsg_endpoint_ops glink_endpoint_ops = { .destroy_ept = qcom_glink_destroy_ept, .send = qcom_glink_send, + .sendto = qcom_glink_sendto, .trysend = qcom_glink_trysend, + .trysendto = qcom_glink_trysendto, }; static void qcom_glink_rpdev_release(struct device *dev) |