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Subject[PATCH v2 6/6] drm/virtio: move virtio_gpu_cmd_create_resource call into virtio_gpu_object_create
Date
Specifically call virtio_gpu_object_create() before ttm_bo_init(), so
the object is already created when ttm calls the
virtio_gpu_ttm_tt_bind() callback (which in turn calls
virtio_gpu_object_attach()).

With that in place virtio_gpu_object_attach() will never be called with
an object which is not yet created, so the extra
virtio_gpu_object_attach() calls done after
virtio_gpu_cmd_create_resource() is not needed any more.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 2 ++
drivers/gpu/drm/virtio/virtgpu_gem.c | 12 +-----------
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 10 +---------
drivers/gpu/drm/virtio/virtgpu_object.c | 10 ++++++++--
drivers/gpu/drm/virtio/virtgpu_vq.c | 4 ++--
5 files changed, 14 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 3265e62725..52f3950f82 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -56,7 +56,9 @@ struct virtio_gpu_object_params {
uint32_t height;
unsigned long size;
bool pinned;
+ bool dumb;
/* 3d */
+ bool virgl;
uint32_t target;
uint32_t bind;
uint32_t depth;
diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
index 3a63ffcd4b..b5d7df17ac 100644
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -82,9 +82,7 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
- struct virtio_gpu_device *vgdev = dev->dev_private;
struct drm_gem_object *gobj;
- struct virtio_gpu_object *obj;
struct virtio_gpu_object_params params = { 0 };
int ret;
uint32_t pitch;
@@ -101,20 +99,12 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
params.width = args->width;
params.height = args->height;
params.size = args->size;
+ params.dumb = true;
ret = virtio_gpu_gem_create(file_priv, dev, &params, &gobj,
&args->handle);
if (ret)
goto fail;

- obj = gem_to_virtio_gpu_obj(gobj);
- virtio_gpu_cmd_create_resource(vgdev, obj, &params);
-
- /* attach the object to the resource */
- ret = virtio_gpu_object_attach(vgdev, obj, NULL);
- if (ret)
- goto fail;
-
- obj->dumb = true;
args->pitch = pitch;
return ret;

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index da06ebbb3a..3a1c447098 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -300,6 +300,7 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
params.height = rc->height;
params.size = rc->size;
if (vgdev->has_virgl_3d) {
+ params.virgl = true;
params.target = rc->target;
params.bind = rc->bind;
params.depth = rc->depth;
@@ -317,15 +318,6 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
return PTR_ERR(qobj);
obj = &qobj->gem_base;

- if (!vgdev->has_virgl_3d) {
- virtio_gpu_cmd_create_resource(vgdev, qobj, &params);
-
- ret = virtio_gpu_object_attach(vgdev, qobj, NULL);
- } else {
- virtio_gpu_cmd_resource_create_3d(vgdev, qobj, &params);
- ret = virtio_gpu_object_attach(vgdev, qobj, NULL);
- }
-
ret = drm_gem_handle_create(file_priv, obj, &handle);
if (ret) {
drm_gem_object_release(obj);
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index 62367e3f80..94da9e68d2 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -106,9 +106,15 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
kfree(bo);
return ret;
}
- bo->dumb = false;
+ bo->dumb = params->dumb;
+
+ if (params->virgl) {
+ virtio_gpu_cmd_resource_create_3d(vgdev, bo, params);
+ } else {
+ virtio_gpu_cmd_create_resource(vgdev, bo, params);
+ }
+
virtio_gpu_init_ttm_placement(bo, params->pinned);
-
ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, params->size,
ttm_bo_type_device, &bo->placement, 0,
true, acc_size, NULL, NULL,
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index ca93ec6ca3..292663c192 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -932,8 +932,8 @@ int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
struct scatterlist *sg;
int si, nents;

- if (!obj->created)
- return 0;
+ if (WARN_ON_ONCE(!obj->created))
+ return -EINVAL;

if (!obj->pages) {
int ret;
--
2.9.3
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