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
  39 /**
  40  * Called when "/proc/dri/.../name" is read.
  41  *
  42  * Prints the device name together with the bus id if available.
  43  */
  44 int drm_name_info(struct seq_file *m, void *data)
  45 {
  46         struct drm_info_node *node = (struct drm_info_node *) m->private;
  47         struct drm_minor *minor = node->minor;
  48         struct drm_device *dev = minor->dev;
  49         struct drm_master *master = minor->master;
  50         const char *bus_name;
  51         if (!master)
  52                 return 0;
  53
  54         bus_name = dev->driver->bus->get_name(dev);
  55         if (master->unique) {
  56                 seq_printf(m, "%s %s %s\n",
  57                            bus_name,
  58                            dev_name(dev->dev), master->unique);
  59         } else {
  60                 seq_printf(m, "%s %s\n",
  61                            bus_name, dev_name(dev->dev));
  62         }
  63         return 0;
  64 }
  65
  66 /**
  67  * Called when "/proc/dri/.../vm" is read.
  68  *
  69  * Prints information about all mappings in drm_device::maplist.
  70  */
  71 int drm_vm_info(struct seq_file *m, void *data)
  72 {
  73         struct drm_info_node *node = (struct drm_info_node *) m->private;
  74         struct drm_device *dev = node->minor->dev;
  75         struct drm_local_map *map;
  76         struct drm_map_list *r_list;
  77
  78         /* Hardcoded from _DRM_FRAME_BUFFER,
  79            _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
  80            _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
  81         const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
  82         const char *type;
  83         int i;
  84
  85         mutex_lock(&dev->struct_mutex);
  86         seq_printf(m, "slot      offset       size type flags    address mtrr\n\n");
  87         i = 0;
  88         list_for_each_entry(r_list, &dev->maplist, head) {
  89                 map = r_list->map;
  90                 if (!map)
  91                         continue;
  92                 if (map->type < 0 || map->type > 5)
  93                         type = "??";
  94                 else
  95                         type = types[map->type];
  96
  97                 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%08lx ",
  98                            i,
  99                            (unsigned long long)map->offset,
 100                            map->size, type, map->flags,
 101                            (unsigned long) r_list->user_token);
 102                 if (map->mtrr < 0)
 103                         seq_printf(m, "none\n");
 104                 else
 105                         seq_printf(m, "%4d\n", map->mtrr);
 106                 i++;
 107         }
 108         mutex_unlock(&dev->struct_mutex);
 109         return 0;
 110 }
 111
 112 /**
 113  * Called when "/proc/dri/.../bufs" is read.
 114  */
 115 int drm_bufs_info(struct seq_file *m, void *data)
 116 {
 117         struct drm_info_node *node = (struct drm_info_node *) m->private;
 118         struct drm_device *dev = node->minor->dev;
 119         struct drm_device_dma *dma;
 120         int i, seg_pages;
 121
 122         mutex_lock(&dev->struct_mutex);
 123         dma = dev->dma;
 124         if (!dma) {
 125                 mutex_unlock(&dev->struct_mutex);
 126                 return 0;
 127         }
 128
 129         seq_printf(m, " o     size count  free   segs pages    kB\n\n");
 130         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 131                 if (dma->bufs[i].buf_count) {
 132                         seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
 133                         seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
 134                                    i,
 135                                    dma->bufs[i].buf_size,
 136                                    dma->bufs[i].buf_count,
 137                                    atomic_read(&dma->bufs[i].freelist.count),
 138                                    dma->bufs[i].seg_count,
 139                                    seg_pages,
 140                                    seg_pages * PAGE_SIZE / 1024);
 141                 }
 142         }
 143         seq_printf(m, "\n");
 144         for (i = 0; i < dma->buf_count; i++) {
 145                 if (i && !(i % 32))
 146                         seq_printf(m, "\n");
 147                 seq_printf(m, " %d", dma->buflist[i]->list);
 148         }
 149         seq_printf(m, "\n");
 150         mutex_unlock(&dev->struct_mutex);
 151         return 0;
 152 }
 153
 154 /**
 155  * Called when "/proc/dri/.../vblank" is read.
 156  */
 157 int drm_vblank_info(struct seq_file *m, void *data)
 158 {
 159         struct drm_info_node *node = (struct drm_info_node *) m->private;
 160         struct drm_device *dev = node->minor->dev;
 161         int crtc;
 162
 163         mutex_lock(&dev->struct_mutex);
 164         for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
 165                 seq_printf(m, "CRTC %d enable:     %d\n",
 166                            crtc, atomic_read(&dev->vblank[crtc].refcount));
 167                 seq_printf(m, "CRTC %d counter:    %d\n",
 168                            crtc, drm_vblank_count(dev, crtc));
 169                 seq_printf(m, "CRTC %d last wait:  %d\n",
 170                            crtc, dev->vblank[crtc].last_wait);
 171                 seq_printf(m, "CRTC %d in modeset: %d\n",
 172                            crtc, dev->vblank[crtc].inmodeset);
 173         }
 174         mutex_unlock(&dev->struct_mutex);
 175         return 0;
 176 }
 177
 178 /**
 179  * Called when "/proc/dri/.../clients" is read.
 180  *
 181  */
 182 int drm_clients_info(struct seq_file *m, void *data)
 183 {
 184         struct drm_info_node *node = (struct drm_info_node *) m->private;
 185         struct drm_device *dev = node->minor->dev;
 186         struct drm_file *priv;
 187
 188         mutex_lock(&dev->struct_mutex);
 189         seq_printf(m, "a dev    pid    uid      magic\n\n");
 190         list_for_each_entry(priv, &dev->filelist, lhead) {
 191                 seq_printf(m, "%c %3d %5d %5d %10u\n",
 192                            priv->authenticated ? 'y' : 'n',
 193                            priv->minor->index,
 194                            pid_vnr(priv->pid),
 195                            from_kuid_munged(seq_user_ns(m), priv->uid),
 196                            priv->magic);
 197         }
 198         mutex_unlock(&dev->struct_mutex);
 199         return 0;
 200 }
 201
 202
 203 static int drm_gem_one_name_info(int id, void *ptr, void *data)
 204 {
 205         struct drm_gem_object *obj = ptr;
 206         struct seq_file *m = data;
 207
 208         seq_printf(m, "%6d %8zd %7d %8d\n",
 209                    obj->name, obj->size,
 210                    obj->handle_count,
 211                    atomic_read(&obj->refcount.refcount));
 212         return 0;
 213 }
 214
 215 int drm_gem_name_info(struct seq_file *m, void *data)
 216 {
 217         struct drm_info_node *node = (struct drm_info_node *) m->private;
 218         struct drm_device *dev = node->minor->dev;
 219
 220         seq_printf(m, "  name     size handles refcount\n");
 221
 222         mutex_lock(&dev->object_name_lock);
 223         idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
 224         mutex_unlock(&dev->object_name_lock);
 225
 226         return 0;
 227 }
 228
 229 #if DRM_DEBUG_CODE
 230
 231 int drm_vma_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         struct drm_vma_entry *pt;
 236         struct vm_area_struct *vma;
 237         unsigned long vma_count = 0;
 238 #if defined(__i386__)
 239         unsigned int pgprot;
 240 #endif
 241
 242         mutex_lock(&dev->struct_mutex);
 243         list_for_each_entry(pt, &dev->vmalist, head)
 244                 vma_count++;
 245
 246         seq_printf(m, "vma use count: %lu, high_memory = %pK, 0x%pK\n",
 247                    vma_count, high_memory,
 248                    (void *)(unsigned long)virt_to_phys(high_memory));
 249
 250         list_for_each_entry(pt, &dev->vmalist, head) {
 251                 vma = pt->vma;
 252                 if (!vma)
 253                         continue;
 254                 seq_printf(m,
 255                            "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000",
 256                            pt->pid,
 257                            (void *)vma->vm_start, (void *)vma->vm_end,
 258                            vma->vm_flags & VM_READ ? 'r' : '-',
 259                            vma->vm_flags & VM_WRITE ? 'w' : '-',
 260                            vma->vm_flags & VM_EXEC ? 'x' : '-',
 261                            vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
 262                            vma->vm_flags & VM_LOCKED ? 'l' : '-',
 263                            vma->vm_flags & VM_IO ? 'i' : '-',
 264                            vma->vm_pgoff);
 265
 266 #if defined(__i386__)
 267                 pgprot = pgprot_val(vma->vm_page_prot);
 268                 seq_printf(m, " %c%c%c%c%c%c%c%c%c",
 269                            pgprot & _PAGE_PRESENT ? 'p' : '-',
 270                            pgprot & _PAGE_RW ? 'w' : 'r',
 271                            pgprot & _PAGE_USER ? 'u' : 's',
 272                            pgprot & _PAGE_PWT ? 't' : 'b',
 273                            pgprot & _PAGE_PCD ? 'u' : 'c',
 274                            pgprot & _PAGE_ACCESSED ? 'a' : '-',
 275                            pgprot & _PAGE_DIRTY ? 'd' : '-',
 276                            pgprot & _PAGE_PSE ? 'm' : 'k',
 277                            pgprot & _PAGE_GLOBAL ? 'g' : 'l');
 278 #endif
 279                 seq_printf(m, "\n");
 280         }
 281         mutex_unlock(&dev->struct_mutex);
 282         return 0;
 283 }
 284
 285 #endif
 286