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authorChris Lew <clew@codeaurora.org>2017-10-26 15:28:55 -0700
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-10-30 21:25:04 -0700
commit073893778dc2f68e41d65d79925ca89db526b4ab (patch)
tree03fa10264a50b2fcb7bc33e30a9f280ce58fad85 /drivers/rpmsg/qcom_glink_native.c
parenteace566c3406cac3131d44198f05b7b55f79651f (diff)
downloadlinux-073893778dc2f68e41d65d79925ca89db526b4ab.tar.gz
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>
Diffstat (limited to 'drivers/rpmsg/qcom_glink_native.c')
-rw-r--r--drivers/rpmsg/qcom_glink_native.c35
1 files changed, 27 insertions, 8 deletions
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;
}