1 /*
2  * Copyright © 2012 Intel Corporation
3  * Copyright © 2014 The Chromium OS Authors
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice (including the next
13  * paragraph) shall be included in all copies or substantial portions of the
14  * Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22  * IN THE SOFTWARE.
23  *
24  * Authors:
25  *    Ben Widawsky <ben@bwidawsk.net>
26  *
27  */
28 
29 #ifndef _VGEM_DRV_H_
30 #define _VGEM_DRV_H_
31 
32 #include <drm/drm_gem.h>
33 #include <drm/drm_cache.h>
34 
35 #include <uapi/drm/vgem_drm.h>
36 
37 struct vgem_file {
38 	struct idr fence_idr;
39 	struct mutex fence_mutex;
40 };
41 
42 #define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
43 struct drm_vgem_gem_object {
44 	struct drm_gem_object base;
45 
46 	struct page **pages;
47 	unsigned int pages_pin_count;
48 	struct mutex pages_lock;
49 
50 	struct sg_table *table;
51 };
52 
53 int vgem_fence_open(struct vgem_file *file);
54 int vgem_fence_attach_ioctl(struct drm_device *dev,
55 			    void *data,
56 			    struct drm_file *file);
57 int vgem_fence_signal_ioctl(struct drm_device *dev,
58 			    void *data,
59 			    struct drm_file *file);
60 void vgem_fence_close(struct vgem_file *file);
61 
62 #endif
63