[PATCH 2/3] rpmsg: glink: Add support to preallocate intents
From: Chris Lew <hidden>
Date: 2017-10-19 01:11:50
Also in:
linux-arm-msm, lkml
Subsystem:
arm/qualcomm mailing list, remote processor messaging (rpmsg) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
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 <redacted> --- drivers/rpmsg/qcom_glink_native.c | 36 ++++++++++++++++++++++++++++-------- 1 file changed, 28 insertions(+), 8 deletions(-)
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 5a5e927ea50f..05e04a8943e3 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c@@ -1143,19 +1143,39 @@ 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 qcom_glink *glink = channel->glink; - int num_intents = glink->intentless ? 0 : 5; + struct glink_core_rx_intent *intent; + const struct property *prop = NULL; + int num_groups = 1; + int num_intents; + int size; + __be32 base[2]; + int *val = base; + + if (rpdev->dev.of_node) + prop = of_find_property(rpdev->dev.of_node, "intents", NULL); + + if (prop && !glink->intentless) { + val = prop->value; + num_groups = prop->length / sizeof(u32) / 2; + } else { + base[0] = cpu_to_be32(SZ_1K); + base[1] = cpu_to_be32(glink->intentless ? 0 : 5); + } /* 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; }
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