rpmsg: glink: Add support to preallocate intents
The base intents prequeued during channel creation may not satisfy a
channel's throughput requirement. Add support for intents dt-binding to
allow channels to specify the size and amount of intents to prequeue
during endpoint announcement.
Signed-off-by: Chris Lew <clew@codeaurora.org>
[bjorn: Altered how defaults are expressed]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index fcd46ab..2dff778 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1149,19 +1149,38 @@
static int qcom_glink_announce_create(struct rpmsg_device *rpdev)
{
struct glink_channel *channel = to_glink_channel(rpdev->ept);
- struct glink_core_rx_intent *intent;
+ struct device_node *np = rpdev->dev.of_node;
struct qcom_glink *glink = channel->glink;
- int num_intents = glink->intentless ? 0 : 5;
+ struct glink_core_rx_intent *intent;
+ const struct property *prop = NULL;
+ __be32 defaults[] = { cpu_to_be32(SZ_1K), cpu_to_be32(5) };
+ int num_intents;
+ int num_groups = 1;
+ __be32 *val = defaults;
+ int size;
- /* Channel is now open, advertise base set of intents */
- while (num_intents--) {
- intent = qcom_glink_alloc_intent(glink, channel, SZ_1K, true);
- if (!intent)
- break;
+ if (glink->intentless)
+ return 0;
- qcom_glink_advertise_intent(glink, channel, intent);
+ prop = of_find_property(np, "qcom,intents", NULL);
+ if (prop) {
+ val = prop->value;
+ num_groups = prop->length / sizeof(u32) / 2;
}
+ /* Channel is now open, advertise base set of intents */
+ while (num_groups--) {
+ size = be32_to_cpup(val++);
+ num_intents = be32_to_cpup(val++);
+ while (num_intents--) {
+ intent = qcom_glink_alloc_intent(glink, channel, size,
+ true);
+ if (!intent)
+ break;
+
+ qcom_glink_advertise_intent(glink, channel, intent);
+ }
+ }
return 0;
}