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drm/virtio: add virtio_gpu_object_array & helpers

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Some helper functions to manage an array of gem objects.

v9: use dma_resv_lock_interruptible.
v6:
 - add ticket to struct virtio_gpu_object_array.
 - add virtio_gpu_array_{lock,unlock}_resv helpers.
 - add virtio_gpu_array_add_fence helper.
v5: some small optimizations (Chia-I Wu).
v4: make them virtio-private instead of generic helpers.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190829103301.3539-8-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann
2019-08-29 12:32:50 +02:00
parent cde14fd4a6
commit 98abe21d07
2 changed files with 110 additions and 0 deletions
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17
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -84,6 +84,12 @@ struct virtio_gpu_object {
#define gem_to_virtio_gpu_obj(gobj) \
container_of((gobj), struct virtio_gpu_object, gem_base)
struct virtio_gpu_object_array {
struct ww_acquire_ctx ticket;
u32 nents, total;
struct drm_gem_object *objs[];
};
struct virtio_gpu_vbuffer;
struct virtio_gpu_device;
@@ -251,6 +257,17 @@ int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle, uint64_t *offset_p);
struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
struct virtio_gpu_object_array*
virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
struct drm_gem_object *obj);
int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
struct dma_fence *fence);
void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
/* virtio vg */
int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);