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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 20:12:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 20:12:08 -0800
commitbedf571986990046ddc4578e6378de146cf75b9e (patch)
tree60ceae16db9c3b5efbe8d53fab4ecf3499ccc1bb /drivers/rpmsg
parentd9ef1ccf7cf1210d5ca49c652045bc03c97c8b59 (diff)
parent38a9acb3bb7b2561a08144ff80a292889f389a9b (diff)
Merge tag 'rpmsg-v4.15' of git://github.com/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson: - turn RPMSG_VIRTIO into a user selectable config - fix few bugs in GLINK - provide the support for specifying initial buffer sizes for GLINK channels. * tag 'rpmsg-v4.15' of git://github.com/andersson/remoteproc: rpmsg: glink: The mbox client knows_txdone rpmsg: glink: Add missing MODULE_LICENSE rpmsg: glink: Use best fit intent during tx rpmsg: glink: Add support to preallocate intents dt-bindings: soc: qcom: Support GLINK intents rpmsg: glink: Initialize the "intent_req_comp" completion variable rpmsg: Allow RPMSG_VIRTIO to be enabled via menuconfig or defconfig
Diffstat (limited to 'drivers/rpmsg')
-rw-r--r--drivers/rpmsg/Kconfig3
-rw-r--r--drivers/rpmsg/qcom_glink_native.c51
2 files changed, 42 insertions, 12 deletions
diff --git a/drivers/rpmsg/Kconfig b/drivers/rpmsg/Kconfig
index 0fe6eac46512..65a9f6b892f0 100644
--- a/drivers/rpmsg/Kconfig
+++ b/drivers/rpmsg/Kconfig
@@ -47,7 +47,8 @@ config RPMSG_QCOM_SMD
platforms.
config RPMSG_VIRTIO
- tristate
+ tristate "Virtio RPMSG bus driver"
+ depends on HAS_DMA
select RPMSG
select VIRTIO
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 5dcc9bf1c5bc..40d76d2a5eff 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -227,6 +227,7 @@ static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink,
init_completion(&channel->open_req);
init_completion(&channel->open_ack);
+ init_completion(&channel->intent_req_comp);
INIT_LIST_HEAD(&channel->done_intents);
INIT_WORK(&channel->intent_work, qcom_glink_rx_done_work);
@@ -1148,19 +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;
}
@@ -1237,11 +1257,16 @@ static int __qcom_glink_send(struct glink_channel *channel,
spin_lock_irqsave(&channel->intent_lock, flags);
idr_for_each_entry(&channel->riids, tmp, iid) {
if (tmp->size >= len && !tmp->in_use) {
- tmp->in_use = true;
- intent = tmp;
- break;
+ if (!intent)
+ intent = tmp;
+ else if (intent->size > tmp->size)
+ intent = tmp;
+ if (intent->size == len)
+ break;
}
}
+ if (intent)
+ intent->in_use = true;
spin_unlock_irqrestore(&channel->intent_lock, flags);
/* We found an available intent */
@@ -1551,6 +1576,7 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev,
idr_init(&glink->rcids);
glink->mbox_client.dev = dev;
+ glink->mbox_client.knows_txdone = true;
glink->mbox_chan = mbox_request_channel(&glink->mbox_client, 0);
if (IS_ERR(glink->mbox_chan)) {
if (PTR_ERR(glink->mbox_chan) != -EPROBE_DEFER)
@@ -1616,3 +1642,6 @@ void qcom_glink_native_unregister(struct qcom_glink *glink)
device_unregister(glink->dev);
}
EXPORT_SYMBOL_GPL(qcom_glink_native_unregister);
+
+MODULE_DESCRIPTION("Qualcomm GLINK driver");
+MODULE_LICENSE("GPL v2");

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