drivers/gpu/drm/omapdrm/omap_debugfs.c

   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 #ifdef CONFIG_DRM_FBDEV_EMULATION
  55 static int fb_show(struct seq_file *m, void *arg)
  56 {
  57         struct drm_info_node *node = (struct drm_info_node *) m->private;
  58         struct drm_device *dev = node->minor->dev;
  59         struct omap_drm_private *priv = dev->dev_private;
  60         struct drm_framebuffer *fb;
  61
  62         seq_printf(m, "fbcon ");
  63         omap_framebuffer_describe(priv->fbdev->fb, m);
  64
  65         mutex_lock(&dev->mode_config.fb_lock);
  66         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
  67                 if (fb == priv->fbdev->fb)
  68                         continue;
  69
  70                 seq_printf(m, "user ");
  71                 omap_framebuffer_describe(fb, m);
  72         }
  73         mutex_unlock(&dev->mode_config.fb_lock);
  74
  75         return 0;
  76 }
  77 #endif
  78
  79 /* list of debufs files that are applicable to all devices */
  80 static struct drm_info_list omap_debugfs_list[] = {
  81         {"gem", gem_show, 0},
  82         {"mm", mm_show, 0},
  83 #ifdef CONFIG_DRM_FBDEV_EMULATION
  84         {"fb", fb_show, 0},
  85 #endif
  86 };
  87
  88 /* list of debugfs files that are specific to devices with dmm/tiler */
  89 static struct drm_info_list omap_dmm_debugfs_list[] = {
  90         {"tiler_map", tiler_map_show, 0},
  91 };
  92
  93 int omap_debugfs_init(struct drm_minor *minor)
  94 {
  95         struct drm_device *dev = minor->dev;
  96         int ret;
  97
  98         ret = drm_debugfs_create_files(omap_debugfs_list,
  99                         ARRAY_SIZE(omap_debugfs_list),
 100                         minor->debugfs_root, minor);
 101
 102         if (ret) {
 103                 dev_err(dev->dev, "could not install omap_debugfs_list\n");
 104                 return ret;
 105         }
 106
 107         if (dmm_is_available())
 108                 ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
 109                                 ARRAY_SIZE(omap_dmm_debugfs_list),
 110                                 minor->debugfs_root, minor);
 111
 112         if (ret) {
 113                 dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
 114                 return ret;
 115         }
 116
 117         return ret;
 118 }
 119
 120 void omap_debugfs_cleanup(struct drm_minor *minor)
 121 {
 122         drm_debugfs_remove_files(omap_debugfs_list,
 123                         ARRAY_SIZE(omap_debugfs_list), minor);
 124         if (dmm_is_available())
 125                 drm_debugfs_remove_files(omap_dmm_debugfs_list,
 126                                 ARRAY_SIZE(omap_dmm_debugfs_list), minor);
 127 }
 128
 129 #endif