drivers/gpu/drm/drm_info.c

   1 /**
   2  * \file drm_info.c
   3  * DRM info file implementations
   4  *
   5  * \author Ben Gamari <[email protected]>
   6  */
   7
   8 /*
   9  * Created: Sun Dec 21 13:09:50 2008 by [email protected]
  10  *
  11  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  12  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  13  * Copyright 2008 Ben Gamari <[email protected]>
  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/drm_gem.h>
  39
  40 #include "drm_legacy.h"
  41
  42 /**
  43  * Called when "/proc/dri/.../name" is read.
  44  *
  45  * Prints the device name together with the bus id if available.
  46  */
  47 int drm_name_info(struct seq_file *m, void *data)
  48 {
  49         struct drm_info_node *node = (struct drm_info_node *) m->private;
  50         struct drm_minor *minor = node->minor;
  51         struct drm_device *dev = minor->dev;
  52         struct drm_master *master = minor->master;
  53         if (!master)
  54                 return 0;
  55
  56         if (master->unique) {
  57                 seq_printf(m, "%s %s %s\n",
  58                            dev->driver->name,
  59                            dev_name(dev->dev), master->unique);
  60         } else {
  61                 seq_printf(m, "%s %s\n",
  62                            dev->driver->name, dev_name(dev->dev));
  63         }
  64         return 0;
  65 }
  66
  67 /**
  68  * Called when "/proc/dri/.../vm" is read.
  69  *
  70  * Prints information about all mappings in drm_device::maplist.
  71  */
  72 int drm_vm_info(struct seq_file *m, void *data)
  73 {
  74         struct drm_info_node *node = (struct drm_info_node *) m->private;
  75         struct drm_device *dev = node->minor->dev;
  76         struct drm_local_map *map;
  77         struct drm_map_list *r_list;
  78
  79         /* Hardcoded from _DRM_FRAME_BUFFER,
  80            _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
  81            _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
  82         const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
  83         const char *type;
  84         int i;
  85
  86         mutex_lock(&dev->struct_mutex);
  87         seq_printf(m, "slot      offset       size type flags    address mtrr\n\n");
  88         i = 0;
  89         list_for_each_entry(r_list, &dev->maplist, head) {
  90                 map = r_list->map;
  91                 if (!map)
  92                         continue;
  93                 if (map->type < 0 || map->type > 5)
  94                         type = "??";
  95                 else
  96                         type = types[map->type];
  97
  98                 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%08lx ",
  99                            i,
 100                            (unsigned long long)map->offset,
 101                            map->size, type, map->flags,
 102                            (unsigned long) r_list->user_token);
 103                 if (map->mtrr < 0)
 104                         seq_printf(m, "none\n");
 105                 else
 106                         seq_printf(m, "%4d\n", map->mtrr);
 107                 i++;
 108         }
 109         mutex_unlock(&dev->struct_mutex);
 110         return 0;
 111 }
 112
 113 /**
 114  * Called when "/proc/dri/.../bufs" is read.
 115  */
 116 int drm_bufs_info(struct seq_file *m, void *data)
 117 {
 118         struct drm_info_node *node = (struct drm_info_node *) m->private;
 119         struct drm_device *dev = node->minor->dev;
 120         struct drm_device_dma *dma;
 121         int i, seg_pages;
 122
 123         mutex_lock(&dev->struct_mutex);
 124         dma = dev->dma;
 125         if (!dma) {
 126                 mutex_unlock(&dev->struct_mutex);
 127                 return 0;
 128         }
 129
 130         seq_printf(m, " o     size count  free   segs pages    kB\n\n");
 131         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 132                 if (dma->bufs[i].buf_count) {
 133                         seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
 134                         seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
 135                                    i,
 136                                    dma->bufs[i].buf_size,
 137                                    dma->bufs[i].buf_count,
 138                                    0,
 139                                    dma->bufs[i].seg_count,
 140                                    seg_pages,
 141                                    seg_pages * PAGE_SIZE / 1024);
 142                 }
 143         }
 144         seq_printf(m, "\n");
 145         for (i = 0; i < dma->buf_count; i++) {
 146                 if (i && !(i % 32))
 147                         seq_printf(m, "\n");
 148                 seq_printf(m, " %d", dma->buflist[i]->list);
 149         }
 150         seq_printf(m, "\n");
 151         mutex_unlock(&dev->struct_mutex);
 152         return 0;
 153 }
 154
 155 /**
 156  * Called when "/proc/dri/.../vblank" is read.
 157  */
 158 int drm_vblank_info(struct seq_file *m, void *data)
 159 {
 160         struct drm_info_node *node = (struct drm_info_node *) m->private;
 161         struct drm_device *dev = node->minor->dev;
 162         int crtc;
 163
 164         mutex_lock(&dev->struct_mutex);
 165         for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
 166                 seq_printf(m, "CRTC %d enable:     %d\n",
 167                            crtc, atomic_read(&dev->vblank[crtc].refcount));
 168                 seq_printf(m, "CRTC %d counter:    %d\n",
 169                            crtc, drm_vblank_count(dev, crtc));
 170                 seq_printf(m, "CRTC %d last wait:  %d\n",
 171                            crtc, dev->vblank[crtc].last_wait);
 172                 seq_printf(m, "CRTC %d in modeset: %d\n",
 173                            crtc, dev->vblank[crtc].inmodeset);
 174         }
 175         mutex_unlock(&dev->struct_mutex);
 176         return 0;
 177 }
 178
 179 /**
 180  * Called when "/proc/dri/.../clients" is read.
 181  *
 182  */
 183 int drm_clients_info(struct seq_file *m, void *data)
 184 {
 185         struct drm_info_node *node = (struct drm_info_node *) m->private;
 186         struct drm_device *dev = node->minor->dev;
 187         struct drm_file *priv;
 188
 189         seq_printf(m,
 190                    "%20s %5s %3s master a %5s %10s\n",
 191                    "command",
 192                    "pid",
 193                    "dev",
 194                    "uid",
 195                    "magic");
 196
 197         /* dev->filelist is sorted youngest first, but we want to present
 198          * oldest first (i.e. kernel, servers, clients), so walk backwardss.
 199          */
 200         mutex_lock(&dev->struct_mutex);
 201         list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
 202                 struct task_struct *task;
 203
 204                 rcu_read_lock(); /* locks pid_task()->comm */
 205                 task = pid_task(priv->pid, PIDTYPE_PID);
 206                 seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u\n",
 207                            task ? task->comm : "<unknown>",
 208                            pid_vnr(priv->pid),
 209                            priv->minor->index,
 210                            priv->is_master ? 'y' : 'n',
 211                            priv->authenticated ? 'y' : 'n',
 212                            from_kuid_munged(seq_user_ns(m), priv->uid),
 213                            priv->magic);
 214                 rcu_read_unlock();
 215         }
 216         mutex_unlock(&dev->struct_mutex);
 217         return 0;
 218 }
 219
 220
 221 static int drm_gem_one_name_info(int id, void *ptr, void *data)
 222 {
 223         struct drm_gem_object *obj = ptr;
 224         struct seq_file *m = data;
 225
 226         seq_printf(m, "%6d %8zd %7d %8d\n",
 227                    obj->name, obj->size,
 228                    obj->handle_count,
 229                    atomic_read(&obj->refcount.refcount));
 230         return 0;
 231 }
 232
 233 int drm_gem_name_info(struct seq_file *m, void *data)
 234 {
 235         struct drm_info_node *node = (struct drm_info_node *) m->private;
 236         struct drm_device *dev = node->minor->dev;
 237
 238         seq_printf(m, "  name     size handles refcount\n");
 239
 240         mutex_lock(&dev->object_name_lock);
 241         idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
 242         mutex_unlock(&dev->object_name_lock);
 243
 244         return 0;
 245 }