From 813d856f3d83cee02e44e87a2492a3a89f0f9ae0 Mon Sep 17 00:00:00 2001
From: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Date: Tue, 21 Sep 2021 16:20:16 -0700
Subject: drm/virtio: implement context init: probe for feature
Git-commit: 6198770a1fe01938921f8a383b777ddb881c94b6
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Let's probe for VIRTIO_GPU_F_CONTEXT_INIT.
Create a new DRM_INFO(..) line since the current one is getting
too long.
Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Acked-by: Lingfeng Yang <lfy@google.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-5-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/virtio/virtgpu_debugfs.c | 1 +
drivers/gpu/drm/virtio/virtgpu_drv.c | 1 +
drivers/gpu/drm/virtio/virtgpu_drv.h | 1 +
drivers/gpu/drm/virtio/virtgpu_kms.c | 8 +++++++-
4 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
index c2b20e0ee030..b6954e2f75e6 100644
--- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
+++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -52,6 +52,7 @@ static int virtio_gpu_features(struct seq_file *m, void *data)
vgdev->has_resource_assign_uuid);
virtio_gpu_add_bool(m, "blob resources", vgdev->has_resource_blob);
+ virtio_gpu_add_bool(m, "context init", vgdev->has_context_init);
virtio_gpu_add_int(m, "cap sets", vgdev->num_capsets);
virtio_gpu_add_int(m, "scanouts", vgdev->num_scanouts);
if (vgdev->host_visible_region.len) {
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index ed85a7863256..9d963f1fda8f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -172,6 +172,7 @@ static unsigned int features[] = {
VIRTIO_GPU_F_EDID,
VIRTIO_GPU_F_RESOURCE_UUID,
VIRTIO_GPU_F_RESOURCE_BLOB,
+ VIRTIO_GPU_F_CONTEXT_INIT,
};
static struct virtio_driver virtio_gpu_driver = {
.feature_table = features,
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 3023e16be0d6..5e1958a522ff 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -236,6 +236,7 @@ struct virtio_gpu_device {
bool has_resource_assign_uuid;
bool has_resource_blob;
bool has_host_visible;
+ bool has_context_init;
struct virtio_shm_region host_visible_region;
struct drm_mm host_visible_mm;
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 58a65121c200..21f410901694 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -191,13 +191,19 @@ int virtio_gpu_init(struct drm_device *dev)
(unsigned long)vgdev->host_visible_region.addr,
(unsigned long)vgdev->host_visible_region.len);
}
+ if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_CONTEXT_INIT)) {
+ vgdev->has_context_init = true;
+ }
- DRM_INFO("features: %cvirgl %cedid %cresource_blob %chost_visible\n",
+ DRM_INFO("features: %cvirgl %cedid %cresource_blob %chost_visible",
vgdev->has_virgl_3d ? '+' : '-',
vgdev->has_edid ? '+' : '-',
vgdev->has_resource_blob ? '+' : '-',
vgdev->has_host_visible ? '+' : '-');
+ DRM_INFO("features: %ccontext_init\n",
+ vgdev->has_context_init ? '+' : '-');
+
ret = virtio_find_vqs(vgdev->vdev, 2, vqs, callbacks, names, NULL);
if (ret) {
DRM_ERROR("failed to find virt queues\n");
--
2.38.1