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rpmsg updates for v4.15 

This turn RPMSG_VIRTIO into a user selectable config, fixes a few bugs in GLINK
 and provides the support for specifying initial buffer sizes for GLINK
 channels.
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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
This commit is contained in:
Linus Torvalds 2017-11-17 20:12:08 -08:00
parent d9ef1ccf7c 38a9acb3bb
commit bedf571986
4 changed files with 52 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
View File

@ -39,6 +39,14 @@ of these nodes are defined by the individual bindings for the specific function
Definition: a list of channels tied to this function, used for matching
the function to a set of virtual channels
- qcom,intents:
Usage: optional
Value type: <prop-encoded-array>
Definition: a list of size,amount pairs describing what intents should
be preallocated for this virtual channel. This can be used
to tweak the default intents available for the channel to
meet expectations of the remote.
= EXAMPLE
The following example represents the GLINK RPM node on a MSM8996 device, with
the function for the "rpm_request" channel defined, which is used for
@ -69,6 +77,8 @@ regualtors and root clocks.
compatible = "qcom,rpm-msm8996";
qcom,glink-channels = "rpm_requests";
qcom,intents = <0x400 5
0x800 1>;
...
};
};

4
drivers/remoteproc/Kconfig
View File

@ -28,7 +28,6 @@ config OMAP_REMOTEPROC
depends on OMAP_IOMMU
select MAILBOX
select OMAP2PLUS_MBOX
select RPMSG_VIRTIO
help
Say y here to support OMAP's remote processors (dual M3
and DSP on OMAP4) via the remote processor framework.
@ -58,7 +57,6 @@ config DA8XX_REMOTEPROC
tristate "DA8xx/OMAP-L13x remoteproc support"
depends on ARCH_DAVINCI_DA8XX
depends on DMA_CMA
select RPMSG_VIRTIO
help
Say y here to support DA8xx/OMAP-L13x remote processors via the
remote processor framework.
@ -79,7 +77,6 @@ config DA8XX_REMOTEPROC
config KEYSTONE_REMOTEPROC
tristate "Keystone Remoteproc support"
depends on ARCH_KEYSTONE
select RPMSG_VIRTIO
help
Say Y here here to support Keystone remote processors (DSP)
via the remote processor framework.
@ -135,7 +132,6 @@ config ST_REMOTEPROC
depends on ARCH_STI
select MAILBOX
select STI_MBOX
select RPMSG_VIRTIO
help
Say y here to support ST's adjunct processors via the remote
processor framework.

3
drivers/rpmsg/Kconfig
View File

@ -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

51
drivers/rpmsg/qcom_glink_native.c
View File

@ -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;
/* 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;
if (glink->intentless)
return 0;
qcom_glink_advertise_intent(glink, channel, intent);
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, size,
true);
if (!intent)
break;
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");