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 <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