drivers/gpu/drm/drm_info.c

   1 /**
   2  * \file drm_info.c
   3  * DRM info file implementations
   4  *
   5  * \author Ben Gamari <bgamari@gmail.com>
   6  */
   7
   8 /*
   9  * Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com
  10  *
  11  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  12  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  13  * Copyright 2008 Ben Gamari <bgamari@gmail.com>
  14  * All Rights Reserved.
  15  *
  16  * Permission is hereby granted, free of charge, to any person obtaining a
  17  * copy of this software and associated documentation files (the "Software"),
  18  * to deal in the Software without restriction, including without limitation
  19  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  20  * and/or sell copies of the Software, and to permit persons to whom the
  21  * Software is furnished to do so, subject to the following conditions:
  22  *
  23  * The above copyright notice and this permission notice (including the next
  24  * paragraph) shall be included in all copies or substantial portions of the
  25  * Software.
  26  *
  27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  28  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  29  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  30  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  31  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  32  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  33  * OTHER DEALINGS IN THE SOFTWARE.
  34  */
  35
  36 #include <linux/seq_file.h>
  37 #include <drm/drmP.h>
  38 #include "drm_legacy.h"
  39
  40 /**
  41  * Called when "/proc/dri/.../name" is read.
  42  *
  43  * Prints the device name together with the bus id if available.
  44  */
  45 int drm_name_info(struct seq_file *m, void *data)
  46 {
  47         struct drm_info_node *node = (struct drm_info_node *) m->private;
  48         struct drm_minor *minor = node->minor;
  49         struct drm_device *dev = minor->dev;
  50         struct drm_master *master = minor->master;
  51         if (!master)
  52                 return 0;
  53
  54         if (master->unique) {
  55                 seq_printf(m, "%s %s %s\n",
  56                            dev->driver->name,
  57                            dev_name(dev->dev), master->unique);
  58         } else {
  59                 seq_printf(m, "%s %s\n",
  60                            dev->driver->name, dev_name(dev->dev));
  61         }
  62         return 0;
  63 }
  64
  65 /**
  66  * Called when "/proc/dri/.../vm" is read.
  67  *
  68  * Prints information about all mappings in drm_device::maplist.
  69  */
  70 int drm_vm_info(struct seq_file *m, void *data)
  71 {
  72         struct drm_info_node *node = (struct drm_info_node *) m->private;
  73         struct drm_device *dev = node->minor->dev;
  74         struct drm_local_map *map;
  75         struct drm_map_list *r_list;
  76
  77         /* Hardcoded from _DRM_FRAME_BUFFER,
  78            _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
  79            _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
  80         const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
  81         const char *type;
  82         int i;
  83
  84         mutex_lock(&dev->struct_mutex);
  85         seq_printf(m, "slot      offset       size type flags    address mtrr\n\n");
  86         i = 0;
  87         list_for_each_entry(r_list, &dev->maplist, head) {
  88                 map = r_list->map;
  89                 if (!map)
  90                         continue;
  91                 if (map->type < 0 || map->type > 5)
  92                         type = "??";
  93                 else
  94                         type = types[map->type];
  95
  96                 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%08lx ",
  97                            i,
  98                            (unsigned long long)map->offset,
  99                            map->size, type, map->flags,
 100                            (unsigned long) r_list->user_token);
 101                 if (map->mtrr < 0)
 102                         seq_printf(m, "none\n");
 103                 else
 104                         seq_printf(m, "%4d\n", map->mtrr);
 105                 i++;
 106         }
 107         mutex_unlock(&dev->struct_mutex);
 108         return 0;
 109 }
 110
 111 /**
 112  * Called when "/proc/dri/.../bufs" is read.
 113  */
 114 int drm_bufs_info(struct seq_file *m, void *data)
 115 {
 116         struct drm_info_node *node = (struct drm_info_node *) m->private;
 117         struct drm_device *dev = node->minor->dev;
 118         struct drm_device_dma *dma;
 119         int i, seg_pages;
 120
 121         mutex_lock(&dev->struct_mutex);
 122         dma = dev->dma;
 123         if (!dma) {
 124                 mutex_unlock(&dev->struct_mutex);
 125                 return 0;
 126         }
 127
 128         seq_printf(m, " o     size count  free   segs pages    kB\n\n");
 129         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 130                 if (dma->bufs[i].buf_count) {
 131                         seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
 132                         seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
 133                                    i,
 134                                    dma->bufs[i].buf_size,
 135                                    dma->bufs[i].buf_count,
 136                                    0,
 137                                    dma->bufs[i].seg_count,
 138                                    seg_pages,
 139                                    seg_pages * PAGE_SIZE / 1024);
 140                 }
 141         }
 142         seq_printf(m, "\n");
 143         for (i = 0; i < dma->buf_count; i++) {
 144                 if (i && !(i % 32))
 145                         seq_printf(m, "\n");
 146                 seq_printf(m, " %d", dma->buflist[i]->list);
 147         }
 148         seq_printf(m, "\n");
 149         mutex_unlock(&dev->struct_mutex);
 150         return 0;
 151 }
 152
 153 /**
 154  * Called when "/proc/dri/.../vblank" is read.
 155  */
 156 int drm_vblank_info(struct seq_file *m, void *data)
 157 {
 158         struct drm_info_node *node = (struct drm_info_node *) m->private;
 159         struct drm_device *dev = node->minor->dev;
 160         int crtc;
 161
 162         mutex_lock(&dev->struct_mutex);
 163         for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
 164                 seq_printf(m, "CRTC %d enable:     %d\n",
 165                            crtc, atomic_read(&dev->vblank[crtc].refcount));
 166                 seq_printf(m, "CRTC %d counter:    %d\n",
 167                            crtc, drm_vblank_count(dev, crtc));
 168                 seq_printf(m, "CRTC %d last wait:  %d\n",
 169                            crtc, dev->vblank[crtc].last_wait);
 170                 seq_printf(m, "CRTC %d in modeset: %d\n",
 171                            crtc, dev->vblank[crtc].inmodeset);
 172         }
 173         mutex_unlock(&dev->struct_mutex);
 174         return 0;
 175 }
 176
 177 /**
 178  * Called when "/proc/dri/.../clients" is read.
 179  *
 180  */
 181 int drm_clients_info(struct seq_file *m, void *data)
 182 {
 183         struct drm_info_node *node = (struct drm_info_node *) m->private;
 184         struct drm_device *dev = node->minor->dev;
 185         struct drm_file *priv;
 186
 187         seq_printf(m,
 188                    "%20s %5s %3s master a %5s %10s\n",
 189                    "command",
 190                    "pid",
 191                    "dev",
 192                    "uid",
 193                    "magic");
 194
 195         /* dev->filelist is sorted youngest first, but we want to present
 196          * oldest first (i.e. kernel, servers, clients), so walk backwardss.
 197          */
 198         mutex_lock(&dev->struct_mutex);
 199         list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
 200                 struct task_struct *task;
 201
 202                 rcu_read_lock(); /* locks pid_task()->comm */
 203                 task = pid_task(priv->pid, PIDTYPE_PID);
 204                 seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u\n",
 205                            task ? task->comm : "<unknown>",
 206                            pid_vnr(priv->pid),
 207                            priv->minor->index,
 208                            priv->is_master ? 'y' : 'n',
 209                            priv->authenticated ? 'y' : 'n',
 210                            from_kuid_munged(seq_user_ns(m), priv->uid),
 211                            priv->magic);
 212                 rcu_read_unlock();
 213         }
 214         mutex_unlock(&dev->struct_mutex);
 215         return 0;
 216 }
 217
 218
 219 static int drm_gem_one_name_info(int id, void *ptr, void *data)
 220 {
 221         struct drm_gem_object *obj = ptr;
 222         struct seq_file *m = data;
 223
 224         seq_printf(m, "%6d %8zd %7d %8d\n",
 225                    obj->name, obj->size,
 226                    obj->handle_count,
 227                    atomic_read(&obj->refcount.refcount));
 228         return 0;
 229 }
 230
 231 int drm_gem_name_info(struct seq_file *m, void *data)
 232 {
 233         struct drm_info_node *node = (struct drm_info_node *) m->private;
 234         struct drm_device *dev = node->minor->dev;
 235
 236         seq_printf(m, "  name     size handles refcount\n");
 237
 238         mutex_lock(&dev->object_name_lock);
 239         idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
 240         mutex_unlock(&dev->object_name_lock);
 241
 242         return 0;
 243 }