drivers/gpu/drm/exynos/exynos_drm_debugfs.c

   1 /*
   2  * Copyright (c) 2014 Samsung Electronics Co., Ltd
   3  * Author: YoungJun Cho <yj44.cho@samsung.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8 */
   9
  10 #include <drm/drmP.h>
  11
  12 #include <linux/debugfs.h>
  13
  14 #include "exynos_drm_drv.h"
  15 #include "exynos_drm_gem.h"
  16
  17 struct exynos_drm_debugfs_gem_info_data {
  18         struct drm_file *filp;
  19         struct seq_file *m;
  20 };
  21
  22 static int exynos_drm_debugfs_gem_one_info(int id, void *ptr, void *data)
  23 {
  24         struct exynos_drm_debugfs_gem_info_data *gem_info_data =
  25                                 (struct exynos_drm_debugfs_gem_info_data *)data;
  26         struct drm_file *filp = gem_info_data->filp;
  27         struct drm_exynos_file_private *file_priv = filp->driver_priv;
  28         struct drm_gem_object *obj = (struct drm_gem_object *)ptr;
  29         struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
  30
  31         seq_printf(gem_info_data->m,
  32                         "%5d\t%5d\t%4d\t%4d\t%4d\t0x%08lx\t0x%x\t%4d\t%4d\t"
  33                         "%4d\t0x%p\n",
  34                                 pid_nr(filp->pid),
  35                                 file_priv->tgid,
  36                                 id,
  37                                 kref_read(&obj->refcount),
  38                                 obj->handle_count,
  39                                 exynos_gem->size,
  40                                 exynos_gem->flags,
  41                                 0,
  42                                 obj->dma_buf ? 1 : 0,
  43                                 obj->import_attach ? 1 : 0,
  44                                 obj);
  45
  46         return 0;
  47 }
  48
  49 static int exynos_drm_debugfs_gem_info(struct seq_file *m, void *data)
  50 {
  51         struct drm_info_node *node = (struct drm_info_node *)m->private;
  52         struct drm_minor *minor = node->minor;
  53         struct drm_device *drm_dev = minor->dev;
  54         struct exynos_drm_debugfs_gem_info_data gem_info_data;
  55         struct drm_file *filp;
  56
  57         gem_info_data.m = m;
  58
  59         seq_puts(m, "pid\ttgid\thandle\tref_cnt\thdl_cnt\tsize\t\tflags\t"
  60                         "pfnmap\texport\timport\tobj_addr\n");
  61
  62         mutex_lock(&drm_dev->struct_mutex);
  63         list_for_each_entry(filp, &drm_dev->filelist, lhead) {
  64                 gem_info_data.filp = filp;
  65
  66                 spin_lock(&filp->table_lock);
  67                 idr_for_each(&filp->object_idr, exynos_drm_debugfs_gem_one_info,
  68                                 &gem_info_data);
  69                 spin_unlock(&filp->table_lock);
  70         }
  71         mutex_unlock(&drm_dev->struct_mutex);
  72
  73         return 0;
  74 }
  75
  76 static struct drm_info_list exynos_drm_debugfs_list[] = {
  77         {"gem_info",    exynos_drm_debugfs_gem_info,    DRIVER_GEM},
  78 };
  79 #define EXYNOS_DRM_DEBUGFS_ENTRIES      ARRAY_SIZE(exynos_drm_debugfs_list)
  80
  81 int exynos_drm_debugfs_init(struct drm_minor *minor)
  82 {
  83         return drm_debugfs_create_files(exynos_drm_debugfs_list,
  84                                         EXYNOS_DRM_DEBUGFS_ENTRIES,
  85                                         minor->debugfs_root, minor);
  86 }