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drm/virtio: Support virtgpu exported resources

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Add support for UUID-based resource sharing mechanism to virtgpu. This
implements the new virtgpu commands and hooks them up to dma-buf's
get_uuid callback.

Signed-off-by: David Stevens <stevensd@chromium.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-4-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
David Stevens
2020-08-18 16:13:43 +09:00
committed by Gerd Hoffmann
parent 592d9fba33
commit c84adb304c
5 changed files with 176 additions and 3 deletions
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21
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -49,6 +49,10 @@
#define DRIVER_MINOR 1
#define DRIVER_PATCHLEVEL 0
#define UUID_INITIALIZING 0
#define UUID_INITIALIZED 1
#define UUID_INITIALIZATION_FAILED 2
struct virtio_gpu_object_params {
uint32_t format;
uint32_t width;
@@ -71,6 +75,9 @@ struct virtio_gpu_object {
uint32_t hw_res_handle;
bool dumb;
bool created;
int uuid_state;
uuid_t uuid;
};
#define gem_to_virtio_gpu_obj(gobj) \
container_of((gobj), struct virtio_gpu_object, base.base)
@@ -200,6 +207,7 @@ struct virtio_gpu_device {
bool has_virgl_3d;
bool has_edid;
bool has_indirect;
bool has_resource_assign_uuid;
struct work_struct config_changed_work;
@@ -210,6 +218,9 @@ struct virtio_gpu_device {
struct virtio_gpu_drv_capset *capsets;
uint32_t num_capsets;
struct list_head cap_cache;
/* protects resource state when exporting */
spinlock_t resource_export_lock;
};
struct virtio_gpu_fpriv {
@@ -336,6 +347,10 @@ void virtio_gpu_dequeue_fence_func(struct work_struct *work);
void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
int
virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object_array *objs);
/* virtgpu_display.c */
void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
@@ -367,6 +382,12 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
/* virtgpu_prime.c */
struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
int flags);
struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
struct dma_buf *buf);
int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
uuid_t *uuid);
struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *sgt);