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 <linux/seq_file.h>
21 
22 #include <drm/drm_crtc.h>
23 #include <drm/drm_fb_helper.h>
24 
25 #include "omap_drv.h"
26 #include "omap_dmm_tiler.h"
27 
28 #ifdef CONFIG_DEBUG_FS
29 
30 static int gem_show(struct seq_file *m, void *arg)
31 {
32 	struct drm_info_node *node = (struct drm_info_node *) m->private;
33 	struct drm_device *dev = node->minor->dev;
34 	struct omap_drm_private *priv = dev->dev_private;
35 	int ret;
36 
37 	ret = mutex_lock_interruptible(&dev->struct_mutex);
38 	if (ret)
39 		return ret;
40 
41 	seq_printf(m, "All Objects:\n");
42 	omap_gem_describe_objects(&priv->obj_list, m);
43 
44 	mutex_unlock(&dev->struct_mutex);
45 
46 	return 0;
47 }
48 
49 static int mm_show(struct seq_file *m, void *arg)
50 {
51 	struct drm_info_node *node = (struct drm_info_node *) m->private;
52 	struct drm_device *dev = node->minor->dev;
53 	return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
54 }
55 
56 #ifdef CONFIG_DRM_FBDEV_EMULATION
57 static int fb_show(struct seq_file *m, void *arg)
58 {
59 	struct drm_info_node *node = (struct drm_info_node *) m->private;
60 	struct drm_device *dev = node->minor->dev;
61 	struct omap_drm_private *priv = dev->dev_private;
62 	struct drm_framebuffer *fb;
63 
64 	seq_printf(m, "fbcon ");
65 	omap_framebuffer_describe(priv->fbdev->fb, m);
66 
67 	mutex_lock(&dev->mode_config.fb_lock);
68 	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
69 		if (fb == priv->fbdev->fb)
70 			continue;
71 
72 		seq_printf(m, "user ");
73 		omap_framebuffer_describe(fb, m);
74 	}
75 	mutex_unlock(&dev->mode_config.fb_lock);
76 
77 	return 0;
78 }
79 #endif
80 
81 /* list of debufs files that are applicable to all devices */
82 static struct drm_info_list omap_debugfs_list[] = {
83 	{"gem", gem_show, 0},
84 	{"mm", mm_show, 0},
85 #ifdef CONFIG_DRM_FBDEV_EMULATION
86 	{"fb", fb_show, 0},
87 #endif
88 };
89 
90 /* list of debugfs files that are specific to devices with dmm/tiler */
91 static struct drm_info_list omap_dmm_debugfs_list[] = {
92 	{"tiler_map", tiler_map_show, 0},
93 };
94 
95 int omap_debugfs_init(struct drm_minor *minor)
96 {
97 	struct drm_device *dev = minor->dev;
98 	int ret;
99 
100 	ret = drm_debugfs_create_files(omap_debugfs_list,
101 			ARRAY_SIZE(omap_debugfs_list),
102 			minor->debugfs_root, minor);
103 
104 	if (ret) {
105 		dev_err(dev->dev, "could not install omap_debugfs_list\n");
106 		return ret;
107 	}
108 
109 	if (dmm_is_available())
110 		ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
111 				ARRAY_SIZE(omap_dmm_debugfs_list),
112 				minor->debugfs_root, minor);
113 
114 	if (ret) {
115 		dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
116 		return ret;
117 	}
118 
119 	return ret;
120 }
121 
122 void omap_debugfs_cleanup(struct drm_minor *minor)
123 {
124 	drm_debugfs_remove_files(omap_debugfs_list,
125 			ARRAY_SIZE(omap_debugfs_list), minor);
126 	if (dmm_is_available())
127 		drm_debugfs_remove_files(omap_dmm_debugfs_list,
128 				ARRAY_SIZE(omap_dmm_debugfs_list), minor);
129 }
130 
131 #endif
132