1 /*
2  * drivers/gpu/drm/omapdrm/omap_debugfs.c
3  *
4  * Copyright (C) 2011 Texas Instruments
5  * Author: Rob Clark <rob.clark@linaro.org>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published by
9  * the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #include <drm/drm_crtc.h>
21 #include <drm/drm_fb_helper.h>
22 
23 #include "omap_drv.h"
24 #include "omap_dmm_tiler.h"
25 
26 #ifdef CONFIG_DEBUG_FS
27 
28 static int gem_show(struct seq_file *m, void *arg)
29 {
30 	struct drm_info_node *node = (struct drm_info_node *) m->private;
31 	struct drm_device *dev = node->minor->dev;
32 	struct omap_drm_private *priv = dev->dev_private;
33 	int ret;
34 
35 	ret = mutex_lock_interruptible(&dev->struct_mutex);
36 	if (ret)
37 		return ret;
38 
39 	seq_printf(m, "All Objects:\n");
40 	omap_gem_describe_objects(&priv->obj_list, m);
41 
42 	mutex_unlock(&dev->struct_mutex);
43 
44 	return 0;
45 }
46 
47 static int mm_show(struct seq_file *m, void *arg)
48 {
49 	struct drm_info_node *node = (struct drm_info_node *) m->private;
50 	struct drm_device *dev = node->minor->dev;
51 	return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
52 }
53 
54 static int fb_show(struct seq_file *m, void *arg)
55 {
56 	struct drm_info_node *node = (struct drm_info_node *) m->private;
57 	struct drm_device *dev = node->minor->dev;
58 	struct omap_drm_private *priv = dev->dev_private;
59 	struct drm_framebuffer *fb;
60 
61 	seq_printf(m, "fbcon ");
62 	omap_framebuffer_describe(priv->fbdev->fb, m);
63 
64 	mutex_lock(&dev->mode_config.fb_lock);
65 	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
66 		if (fb == priv->fbdev->fb)
67 			continue;
68 
69 		seq_printf(m, "user ");
70 		omap_framebuffer_describe(fb, m);
71 	}
72 	mutex_unlock(&dev->mode_config.fb_lock);
73 
74 	return 0;
75 }
76 
77 /* list of debufs files that are applicable to all devices */
78 static struct drm_info_list omap_debugfs_list[] = {
79 	{"gem", gem_show, 0},
80 	{"mm", mm_show, 0},
81 	{"fb", fb_show, 0},
82 };
83 
84 /* list of debugfs files that are specific to devices with dmm/tiler */
85 static struct drm_info_list omap_dmm_debugfs_list[] = {
86 	{"tiler_map", tiler_map_show, 0},
87 };
88 
89 int omap_debugfs_init(struct drm_minor *minor)
90 {
91 	struct drm_device *dev = minor->dev;
92 	int ret;
93 
94 	ret = drm_debugfs_create_files(omap_debugfs_list,
95 			ARRAY_SIZE(omap_debugfs_list),
96 			minor->debugfs_root, minor);
97 
98 	if (ret) {
99 		dev_err(dev->dev, "could not install omap_debugfs_list\n");
100 		return ret;
101 	}
102 
103 	if (dmm_is_available())
104 		ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
105 				ARRAY_SIZE(omap_dmm_debugfs_list),
106 				minor->debugfs_root, minor);
107 
108 	if (ret) {
109 		dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
110 		return ret;
111 	}
112 
113 	return ret;
114 }
115 
116 void omap_debugfs_cleanup(struct drm_minor *minor)
117 {
118 	drm_debugfs_remove_files(omap_debugfs_list,
119 			ARRAY_SIZE(omap_debugfs_list), minor);
120 	if (dmm_is_available())
121 		drm_debugfs_remove_files(omap_dmm_debugfs_list,
122 				ARRAY_SIZE(omap_dmm_debugfs_list), minor);
123 }
124 
125 #endif
126