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         struct drm_printer p = drm_seq_file_printer(m);
  54
  55         drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
  56
  57         return 0;
  58 }
  59
  60 #ifdef CONFIG_DRM_FBDEV_EMULATION
  61 static int fb_show(struct seq_file *m, void *arg)
  62 {
  63         struct drm_info_node *node = (struct drm_info_node *) m->private;
  64         struct drm_device *dev = node->minor->dev;
  65         struct omap_drm_private *priv = dev->dev_private;
  66         struct drm_framebuffer *fb;
  67
  68         seq_printf(m, "fbcon ");
  69         omap_framebuffer_describe(priv->fbdev->fb, m);
  70
  71         mutex_lock(&dev->mode_config.fb_lock);
  72         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
  73                 if (fb == priv->fbdev->fb)
  74                         continue;
  75
  76                 seq_printf(m, "user ");
  77                 omap_framebuffer_describe(fb, m);
  78         }
  79         mutex_unlock(&dev->mode_config.fb_lock);
  80
  81         return 0;
  82 }
  83 #endif
  84
  85 /* list of debufs files that are applicable to all devices */
  86 static struct drm_info_list omap_debugfs_list[] = {
  87         {"gem", gem_show, 0},
  88         {"mm", mm_show, 0},
  89 #ifdef CONFIG_DRM_FBDEV_EMULATION
  90         {"fb", fb_show, 0},
  91 #endif
  92 };
  93
  94 /* list of debugfs files that are specific to devices with dmm/tiler */
  95 static struct drm_info_list omap_dmm_debugfs_list[] = {
  96         {"tiler_map", tiler_map_show, 0},
  97 };
  98
  99 int omap_debugfs_init(struct drm_minor *minor)
 100 {
 101         struct drm_device *dev = minor->dev;
 102         int ret;
 103
 104         ret = drm_debugfs_create_files(omap_debugfs_list,
 105                         ARRAY_SIZE(omap_debugfs_list),
 106                         minor->debugfs_root, minor);
 107
 108         if (ret) {
 109                 dev_err(dev->dev, "could not install omap_debugfs_list\n");
 110                 return ret;
 111         }
 112
 113         if (dmm_is_available())
 114                 ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
 115                                 ARRAY_SIZE(omap_dmm_debugfs_list),
 116                                 minor->debugfs_root, minor);
 117
 118         if (ret) {
 119                 dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
 120                 return ret;
 121         }
 122
 123         return ret;
 124 }
 125
 126 #endif