From 073893778dc2f68e41d65d79925ca89db526b4ab Mon Sep 17 00:00:00 2001 From: Chris Lew Date: Thu, 26 Oct 2017 15:28:55 -0700 Subject: 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 [bjorn: Altered how defaults are expressed] Signed-off-by: Bjorn Andersson --- drivers/rpmsg/qcom_glink_native.c | 35 +++++++++++++++++++++++++++-------- 1 file changed, 27 insertions(+), 8 deletions(-) (limited to 'drivers/rpmsg') diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index fcd46ab090a7..2dff77882ced 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -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_intents--) { - intent = qcom_glink_alloc_intent(glink, channel, SZ_1K, true); - if (!intent) - break; + 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); + qcom_glink_advertise_intent(glink, channel, intent); + } } - return 0; } -- cgit v1.2.3