#include <linux/file.h>
#include <linux/fs.h>
#include <linux/anon_inodes.h>
+#include <linux/sync_file.h>
#include "drm_internal.h"
#include <drm/drm_syncobj.h>
return 0;
}
+int drm_syncobj_import_sync_file_fence(struct drm_file *file_private,
+ int fd, int handle)
+{
+ struct dma_fence *fence = sync_file_get_fence(fd);
+ struct drm_syncobj *syncobj;
+
+ if (!fence)
+ return -EINVAL;
+
+ syncobj = drm_syncobj_find(file_private, handle);
+ if (!syncobj) {
+ dma_fence_put(fence);
+ return -ENOENT;
+ }
+
+ drm_syncobj_replace_fence(file_private, syncobj, fence);
+ dma_fence_put(fence);
+ drm_syncobj_put(syncobj);
+ return 0;
+}
+
+int drm_syncobj_export_sync_file(struct drm_file *file_private,
+ int handle, int *p_fd)
+{
+ int ret;
+ struct dma_fence *fence;
+ struct sync_file *sync_file;
+ int fd = get_unused_fd_flags(O_CLOEXEC);
+
+ if (fd < 0)
+ return fd;
+
+ ret = drm_syncobj_fence_get(file_private, handle, &fence);
+ if (ret)
+ goto err_put_fd;
+
+ sync_file = sync_file_create(fence);
+
+ dma_fence_put(fence);
+
+ if (!sync_file) {
+ ret = -EINVAL;
+ goto err_put_fd;
+ }
+
+ fd_install(fd, sync_file->file);
+
+ *p_fd = fd;
+ return 0;
+err_put_fd:
+ put_unused_fd(fd);
+ return ret;
+}
/**
* drm_syncobj_open - initalizes syncobj file-private structures at devnode open time
* @dev: drm_device which is being opened by userspace
if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
return -ENODEV;
- if (args->pad || args->flags)
+ if (args->pad)
return -EINVAL;
+ if (args->flags != 0 &&
+ args->flags != DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
+ return -EINVAL;
+
+ if (args->flags & DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
+ return drm_syncobj_export_sync_file(file_private, args->handle,
+ &args->fd);
+
return drm_syncobj_handle_to_fd(file_private, args->handle,
&args->fd);
}
if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
return -ENODEV;
- if (args->pad || args->flags)
+ if (args->pad)
+ return -EINVAL;
+
+ if (args->flags != 0 &&
+ args->flags != DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE)
return -EINVAL;
+ if (args->flags & DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE)
+ return drm_syncobj_import_sync_file_fence(file_private,
+ args->fd,
+ args->handle);
+
return drm_syncobj_fd_to_handle(file_private, args->fd,
&args->handle);
}