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