1 /*
2  * Copyright (C) 2015 Red Hat, Inc.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 #include <linux/debugfs.h>
27 
28 #include "drmP.h"
29 #include "virtgpu_drv.h"
30 
31 static int
32 virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
33 {
34 	struct drm_info_node *node = (struct drm_info_node *) m->private;
35 	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
36 
37 	seq_printf(m, "fence %ld %lld\n",
38 		   atomic64_read(&vgdev->fence_drv.last_seq),
39 		   vgdev->fence_drv.sync_seq);
40 	return 0;
41 }
42 
43 static struct drm_info_list virtio_gpu_debugfs_list[] = {
44 	{ "irq_fence", virtio_gpu_debugfs_irq_info, 0, NULL },
45 };
46 
47 #define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
48 
49 int
50 virtio_gpu_debugfs_init(struct drm_minor *minor)
51 {
52 	drm_debugfs_create_files(virtio_gpu_debugfs_list,
53 				 VIRTIO_GPU_DEBUGFS_ENTRIES,
54 				 minor->debugfs_root, minor);
55 	return 0;
56 }
57 
58 void
59 virtio_gpu_debugfs_takedown(struct drm_minor *minor)
60 {
61 	drm_debugfs_remove_files(virtio_gpu_debugfs_list,
62 				 VIRTIO_GPU_DEBUGFS_ENTRIES,
63 				 minor);
64 }
65