sys/dev/drm2/drm_sysctl.c

   1 /*-
   2  * Copyright 2003 Eric Anholt
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  20  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <sys/cdefs.h>
  25 __FBSDID("$FreeBSD$");
  26
  27 /** @file drm_sysctl.c
  28  * Implementation of various sysctls for controlling DRM behavior and reporting
  29  * debug information.
  30  */
  31
  32 #include <dev/drm2/drmP.h>
  33 #include <dev/drm2/drm.h>
  34
  35 #include <sys/sysctl.h>
  36
  37 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  38 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  39 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  40 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  41 static int         drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
  42
  43 struct drm_sysctl_list {
  44         const char *name;
  45         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  46 } drm_sysctl_list[] = {
  47         {"name",    drm_name_info},
  48         {"vm",      drm_vm_info},
  49         {"clients", drm_clients_info},
  50         {"bufs",    drm_bufs_info},
  51         {"vblank",    drm_vblank_info},
  52 };
  53 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
  54
  55 struct drm_sysctl_info {
  56         struct sysctl_ctx_list ctx;
  57         char                   name[2];
  58 };
  59
  60 int drm_sysctl_init(struct drm_device *dev)
  61 {
  62         struct drm_sysctl_info *info;
  63         struct sysctl_oid *oid;
  64         struct sysctl_oid *top, *drioid;
  65         int               i;
  66
  67         info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
  68         dev->sysctl = info;
  69
  70         /* Add the sysctl node for DRI if it doesn't already exist */
  71         drioid = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(&sysctl___hw), OID_AUTO,
  72             "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  73         if (!drioid) {
  74                 free(dev->sysctl, DRM_MEM_DRIVER);
  75                 dev->sysctl = NULL;
  76                 return (-ENOMEM);
  77         }
  78
  79         /* Find the next free slot under hw.dri */
  80         i = 0;
  81         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  82                 if (i <= oid->oid_arg2)
  83                         i = oid->oid_arg2 + 1;
  84         }
  85         if (i > 9) {
  86                 drm_sysctl_cleanup(dev);
  87                 return (-ENOSPC);
  88         }
  89
  90         dev->sysctl_node_idx = i;
  91         /* Add the hw.dri.x for our device */
  92         info->name[0] = '0' + i;
  93         info->name[1] = 0;
  94         top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
  95             OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  96         if (!top) {
  97                 drm_sysctl_cleanup(dev);
  98                 return (-ENOMEM);
  99         }
 100
 101         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
 102                 oid = SYSCTL_ADD_OID(&info->ctx,
 103                         SYSCTL_CHILDREN(top),
 104                         OID_AUTO,
 105                         drm_sysctl_list[i].name,
 106                         CTLTYPE_STRING | CTLFLAG_RD,
 107                         dev,
 108                         0,
 109                         drm_sysctl_list[i].f,
 110                         "A",
 111                         NULL);
 112                 if (!oid) {
 113                         drm_sysctl_cleanup(dev);
 114                         return (-ENOMEM);
 115                 }
 116         }
 117         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
 118             CTLFLAG_RW, &drm_debug, sizeof(drm_debug),
 119             "Enable debugging output");
 120         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
 121             CTLFLAG_RW, &drm_notyet, sizeof(drm_debug),
 122             "Enable notyet reminders");
 123
 124         if (dev->driver->sysctl_init != NULL)
 125                 dev->driver->sysctl_init(dev, &info->ctx, top);
 126
 127         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 128             "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
 129             sizeof(drm_vblank_offdelay),
 130             "");
 131         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 132             "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
 133             sizeof(drm_timestamp_precision),
 134             "");
 135
 136         return (0);
 137 }
 138
 139 int drm_sysctl_cleanup(struct drm_device *dev)
 140 {
 141         int error;
 142
 143         if (dev->sysctl == NULL)
 144                 return (0);
 145
 146         error = sysctl_ctx_free(&dev->sysctl->ctx);
 147         free(dev->sysctl, DRM_MEM_DRIVER);
 148         dev->sysctl = NULL;
 149         if (dev->driver->sysctl_cleanup != NULL)
 150                 dev->driver->sysctl_cleanup(dev);
 151
 152         return (-error);
 153 }
 154
 155 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 156 do {                                                            \
 157         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 158         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 159         if (retcode)                                            \
 160                 goto done;                                      \
 161 } while (0)
 162
 163 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 164 {
 165         struct drm_device *dev = arg1;
 166         struct drm_minor *minor;
 167         struct drm_master *master;
 168         char buf[128];
 169         int retcode;
 170         int hasunique = 0;
 171
 172         /* FIXME: This still uses primary minor. */
 173         minor = dev->primary;
 174         DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name,
 175             (uintmax_t)dev2udev(minor->device));
 176
 177         DRM_LOCK(dev);
 178         master = minor->master;
 179         if (master != NULL && master->unique) {
 180                 snprintf(buf, sizeof(buf), " %s", master->unique);
 181                 hasunique = 1;
 182         }
 183         DRM_UNLOCK(dev);
 184
 185         if (hasunique)
 186                 SYSCTL_OUT(req, buf, strlen(buf));
 187
 188         SYSCTL_OUT(req, "", 1);
 189
 190 done:
 191         return retcode;
 192 }
 193
 194 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 195 {
 196         struct drm_device *dev = arg1;
 197         struct drm_map_list *entry;
 198         struct drm_local_map *map, *tempmaps;
 199         const char *types[] = {
 200                 [_DRM_FRAME_BUFFER] = "FB",
 201                 [_DRM_REGISTERS] = "REG",
 202                 [_DRM_SHM] = "SHM",
 203                 [_DRM_AGP] = "AGP",
 204                 [_DRM_SCATTER_GATHER] = "SG",
 205                 [_DRM_CONSISTENT] = "CONS",
 206                 [_DRM_GEM] = "GEM"
 207         };
 208         const char *type, *yesno;
 209         int i, mapcount;
 210         char buf[128];
 211         int retcode;
 212
 213         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 214          * temporary copy of all the map entries and then SYSCTL_OUT that.
 215          */
 216         DRM_LOCK(dev);
 217
 218         mapcount = 0;
 219         list_for_each_entry(entry, &dev->maplist, head) {
 220                 if (entry->map != NULL)
 221                         mapcount++;
 222         }
 223
 224         tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER,
 225             M_NOWAIT);
 226         if (tempmaps == NULL) {
 227                 DRM_UNLOCK(dev);
 228                 return ENOMEM;
 229         }
 230
 231         i = 0;
 232         list_for_each_entry(entry, &dev->maplist, head) {
 233                 if (entry->map != NULL)
 234                         tempmaps[i++] = *entry->map;
 235         }
 236
 237         DRM_UNLOCK(dev);
 238
 239         DRM_SYSCTL_PRINT("\nslot offset         size       "
 240             "type flags address            mtrr\n");
 241
 242         for (i = 0; i < mapcount; i++) {
 243                 map = &tempmaps[i];
 244
 245                 switch(map->type) {
 246                 default:
 247                         type = "??";
 248                         break;
 249                 case _DRM_FRAME_BUFFER:
 250                 case _DRM_REGISTERS:
 251                 case _DRM_SHM:
 252                 case _DRM_AGP:
 253                 case _DRM_SCATTER_GATHER:
 254                 case _DRM_CONSISTENT:
 255                 case _DRM_GEM:
 256                         type = types[map->type];
 257                         break;
 258                 }
 259
 260                 if (map->mtrr < 0)
 261                         yesno = "no";
 262                 else
 263                         yesno = "yes";
 264
 265                 DRM_SYSCTL_PRINT(
 266                     "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n",
 267                     i, (unsigned long long)map->offset, map->size, type,
 268                     map->flags, (unsigned long)map->handle, yesno);
 269         }
 270         SYSCTL_OUT(req, "", 1);
 271
 272 done:
 273         free(tempmaps, DRM_MEM_DRIVER);
 274         return retcode;
 275 }
 276
 277 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 278 {
 279         struct drm_device        *dev = arg1;
 280         struct drm_device_dma *dma = dev->dma;
 281         struct drm_device_dma tempdma;
 282         int *templists;
 283         int i;
 284         char buf[128];
 285         int retcode;
 286
 287         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 288          * copy of the whole structure and the relevant data from buflist.
 289          */
 290         DRM_LOCK(dev);
 291         if (dma == NULL) {
 292                 DRM_UNLOCK(dev);
 293                 return 0;
 294         }
 295         DRM_SPINLOCK(&dev->dma_lock);
 296         tempdma = *dma;
 297         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 298             M_NOWAIT);
 299         for (i = 0; i < dma->buf_count; i++)
 300                 templists[i] = dma->buflist[i]->list;
 301         dma = &tempdma;
 302         DRM_SPINUNLOCK(&dev->dma_lock);
 303         DRM_UNLOCK(dev);
 304
 305         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 306         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 307                 if (dma->bufs[i].buf_count)
 308                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 309                                        i,
 310                                        dma->bufs[i].buf_size,
 311                                        dma->bufs[i].buf_count,
 312                                        atomic_read(&dma->bufs[i]
 313                                                    .freelist.count),
 314                                        dma->bufs[i].seg_count,
 315                                        dma->bufs[i].seg_count
 316                                        *(1 << dma->bufs[i].page_order),
 317                                        (dma->bufs[i].seg_count
 318                                         * (1 << dma->bufs[i].page_order))
 319                                        * (int)PAGE_SIZE / 1024);
 320         }
 321         DRM_SYSCTL_PRINT("\n");
 322         for (i = 0; i < dma->buf_count; i++) {
 323                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 324                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 325         }
 326         DRM_SYSCTL_PRINT("\n");
 327
 328         SYSCTL_OUT(req, "", 1);
 329 done:
 330         free(templists, DRM_MEM_DRIVER);
 331         return retcode;
 332 }
 333
 334 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 335 {
 336         struct drm_device *dev = arg1;
 337         struct drm_file *priv, *tempprivs;
 338         char buf[128];
 339         int retcode;
 340         int privcount, i;
 341
 342         DRM_LOCK(dev);
 343
 344         privcount = 0;
 345         list_for_each_entry(priv, &dev->filelist, lhead)
 346                 privcount++;
 347
 348         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 349             M_NOWAIT);
 350         if (tempprivs == NULL) {
 351                 DRM_UNLOCK(dev);
 352                 return ENOMEM;
 353         }
 354         i = 0;
 355         list_for_each_entry(priv, &dev->filelist, lhead)
 356                 tempprivs[i++] = *priv;
 357
 358         DRM_UNLOCK(dev);
 359
 360         DRM_SYSCTL_PRINT(
 361             "\na dev            pid   uid      magic     ioctls\n");
 362         for (i = 0; i < privcount; i++) {
 363                 priv = &tempprivs[i];
 364                 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
 365                                priv->authenticated ? 'y' : 'n',
 366                                devtoname(priv->minor->device),
 367                                priv->pid,
 368                                priv->uid,
 369                                priv->magic,
 370                                priv->ioctl_count);
 371         }
 372
 373         SYSCTL_OUT(req, "", 1);
 374 done:
 375         free(tempprivs, DRM_MEM_DRIVER);
 376         return retcode;
 377 }
 378
 379 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 380 {
 381         struct drm_device *dev = arg1;
 382         char buf[128];
 383         int retcode;
 384         int i;
 385
 386         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 387         DRM_LOCK(dev);
 388         if (dev->_vblank_count == NULL)
 389                 goto done;
 390         for (i = 0 ; i < dev->num_crtcs ; i++) {
 391                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 392                     i, dev->vblank_refcount[i],
 393                     dev->_vblank_count[i],
 394                     dev->last_vblank[i],
 395                     dev->vblank_enabled[i],
 396                     dev->vblank_inmodeset[i]);
 397         }
 398 done:
 399         DRM_UNLOCK(dev);
 400
 401         SYSCTL_OUT(req, "", -1);
 402         return retcode;
 403 }