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Commit 7defe4c3 authored by Chris Lew's avatar Chris Lew
Browse files

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.

Change-Id: Ic0465e8afe69874429328d65e393e29cb89d3722
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent b17a6e97

drivers/rpmsg/qcom_glink_native.c

+27 −8
Original line number Diff line number Diff line
@@ -1149,19 +1149,38 @@ static struct rpmsg_endpoint *qcom_glink_create_ept(struct rpmsg_device *rpdev, 
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;



	if (glink->intentless)

		return 0;



	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, SZ_1K, true);

			intent = qcom_glink_alloc_intent(glink, channel, size,

							 true);

			if (!intent)

				break;



			qcom_glink_advertise_intent(glink, channel, intent);

		}



	}

	return 0;

}