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