xref: /linux/drivers/gpu/drm/virtio/virtgpu_debugfs.c (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
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/string_helpers.h>
27 
28 #include <drm/drm_debugfs.h>
29 #include <drm/drm_file.h>
30 
31 #include "virtgpu_drv.h"
32 
virtio_gpu_add_bool(struct seq_file * m,const char * name,bool value)33 static void virtio_gpu_add_bool(struct seq_file *m, const char *name,
34 				bool value)
35 {
36 	seq_printf(m, "%-16s : %s\n", name, str_yes_no(value));
37 }
38 
virtio_gpu_add_int(struct seq_file * m,const char * name,int value)39 static void virtio_gpu_add_int(struct seq_file *m, const char *name, int value)
40 {
41 	seq_printf(m, "%-16s : %d\n", name, value);
42 }
43 
virtio_gpu_features(struct seq_file * m,void * data)44 static int virtio_gpu_features(struct seq_file *m, void *data)
45 {
46 	struct drm_info_node *node = (struct drm_info_node *)m->private;
47 	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
48 
49 	virtio_gpu_add_bool(m, "virgl", vgdev->has_virgl_3d);
50 	virtio_gpu_add_bool(m, "edid", vgdev->has_edid);
51 	virtio_gpu_add_bool(m, "indirect", vgdev->has_indirect);
52 
53 	virtio_gpu_add_bool(m, "resource uuid",
54 			    vgdev->has_resource_assign_uuid);
55 
56 	virtio_gpu_add_bool(m, "blob resources", vgdev->has_resource_blob);
57 	virtio_gpu_add_bool(m, "context init", vgdev->has_context_init);
58 	virtio_gpu_add_int(m, "cap sets", vgdev->num_capsets);
59 	virtio_gpu_add_int(m, "scanouts", vgdev->num_scanouts);
60 	if (vgdev->host_visible_region.len) {
61 		seq_printf(m, "%-16s : 0x%lx +0x%lx\n", "host visible region",
62 			   (unsigned long)vgdev->host_visible_region.addr,
63 			   (unsigned long)vgdev->host_visible_region.len);
64 	}
65 	return 0;
66 }
67 
68 static int
virtio_gpu_debugfs_irq_info(struct seq_file * m,void * data)69 virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
70 {
71 	struct drm_info_node *node = (struct drm_info_node *) m->private;
72 	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
73 
74 	seq_printf(m, "fence %llu %lld\n",
75 		   (u64)atomic64_read(&vgdev->fence_drv.last_fence_id),
76 		   vgdev->fence_drv.current_fence_id);
77 	return 0;
78 }
79 
80 static int
virtio_gpu_debugfs_host_visible_mm(struct seq_file * m,void * data)81 virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
82 {
83 	struct drm_info_node *node = (struct drm_info_node *)m->private;
84 	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
85 	struct drm_printer p;
86 
87 	if (!vgdev->has_host_visible) {
88 		seq_puts(m, "Host allocations not visible to guest\n");
89 		return 0;
90 	}
91 
92 	p = drm_seq_file_printer(m);
93 	drm_mm_print(&vgdev->host_visible_mm, &p);
94 	return 0;
95 }
96 
97 static struct drm_info_list virtio_gpu_debugfs_list[] = {
98 	{ "virtio-gpu-features", virtio_gpu_features },
99 	{ "virtio-gpu-irq-fence", virtio_gpu_debugfs_irq_info, 0, NULL },
100 	{ "virtio-gpu-host-visible-mm", virtio_gpu_debugfs_host_visible_mm },
101 };
102 
103 #define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
104 
105 void
virtio_gpu_debugfs_init(struct drm_minor * minor)106 virtio_gpu_debugfs_init(struct drm_minor *minor)
107 {
108 	drm_debugfs_create_files(virtio_gpu_debugfs_list,
109 				 VIRTIO_GPU_DEBUGFS_ENTRIES,
110 				 minor->debugfs_root, minor);
111 }
112