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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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, SYSCTL_CHILDREN(top),
 103                         OID_AUTO, drm_sysctl_list[i].name,
 104                         CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
 105                         dev, 0, drm_sysctl_list[i].f, "A", NULL);
 106                 if (!oid) {
 107                         drm_sysctl_cleanup(dev);
 108                         return (-ENOMEM);
 109                 }
 110         }
 111         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
 112             CTLFLAG_RW, &drm_debug, sizeof(drm_debug),
 113             "Enable debugging output");
 114         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
 115             CTLFLAG_RW, &drm_notyet, sizeof(drm_debug),
 116             "Enable notyet reminders");
 117
 118         if (dev->driver->sysctl_init != NULL)
 119                 dev->driver->sysctl_init(dev, &info->ctx, top);
 120
 121         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 122             "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
 123             sizeof(drm_vblank_offdelay),
 124             "");
 125         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 126             "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
 127             sizeof(drm_timestamp_precision),
 128             "");
 129
 130         return (0);
 131 }
 132
 133 int drm_sysctl_cleanup(struct drm_device *dev)
 134 {
 135         int error;
 136
 137         if (dev->sysctl == NULL)
 138                 return (0);
 139
 140         error = sysctl_ctx_free(&dev->sysctl->ctx);
 141         free(dev->sysctl, DRM_MEM_DRIVER);
 142         dev->sysctl = NULL;
 143         if (dev->driver->sysctl_cleanup != NULL)
 144                 dev->driver->sysctl_cleanup(dev);
 145
 146         return (-error);
 147 }
 148
 149 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 150 do {                                                            \
 151         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 152         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 153         if (retcode)                                            \
 154                 goto done;                                      \
 155 } while (0)
 156
 157 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 158 {
 159         struct drm_device *dev = arg1;
 160         struct drm_minor *minor;
 161         struct drm_master *master;
 162         char buf[128];
 163         int retcode;
 164         int hasunique = 0;
 165
 166         /* FIXME: This still uses primary minor. */
 167         minor = dev->primary;
 168         DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name,
 169             (uintmax_t)dev2udev(minor->device));
 170
 171         DRM_LOCK(dev);
 172         master = minor->master;
 173         if (master != NULL && master->unique) {
 174                 snprintf(buf, sizeof(buf), " %s", master->unique);
 175                 hasunique = 1;
 176         }
 177         DRM_UNLOCK(dev);
 178
 179         if (hasunique)
 180                 SYSCTL_OUT(req, buf, strlen(buf));
 181
 182         SYSCTL_OUT(req, "", 1);
 183
 184 done:
 185         return retcode;
 186 }
 187
 188 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 189 {
 190         struct drm_device *dev = arg1;
 191         struct drm_map_list *entry;
 192         struct drm_local_map *map, *tempmaps;
 193         const char *types[] = {
 194                 [_DRM_FRAME_BUFFER] = "FB",
 195                 [_DRM_REGISTERS] = "REG",
 196                 [_DRM_SHM] = "SHM",
 197                 [_DRM_AGP] = "AGP",
 198                 [_DRM_SCATTER_GATHER] = "SG",
 199                 [_DRM_CONSISTENT] = "CONS",
 200                 [_DRM_GEM] = "GEM"
 201         };
 202         const char *type, *yesno;
 203         int i, mapcount;
 204         char buf[128];
 205         int retcode;
 206
 207         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 208          * temporary copy of all the map entries and then SYSCTL_OUT that.
 209          */
 210         DRM_LOCK(dev);
 211
 212         mapcount = 0;
 213         list_for_each_entry(entry, &dev->maplist, head) {
 214                 if (entry->map != NULL)
 215                         mapcount++;
 216         }
 217
 218         tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER,
 219             M_NOWAIT);
 220         if (tempmaps == NULL) {
 221                 DRM_UNLOCK(dev);
 222                 return ENOMEM;
 223         }
 224
 225         i = 0;
 226         list_for_each_entry(entry, &dev->maplist, head) {
 227                 if (entry->map != NULL)
 228                         tempmaps[i++] = *entry->map;
 229         }
 230
 231         DRM_UNLOCK(dev);
 232
 233         DRM_SYSCTL_PRINT("\nslot offset         size       "
 234             "type flags address            mtrr\n");
 235
 236         for (i = 0; i < mapcount; i++) {
 237                 map = &tempmaps[i];
 238
 239                 switch(map->type) {
 240                 default:
 241                         type = "??";
 242                         break;
 243                 case _DRM_FRAME_BUFFER:
 244                 case _DRM_REGISTERS:
 245                 case _DRM_SHM:
 246                 case _DRM_AGP:
 247                 case _DRM_SCATTER_GATHER:
 248                 case _DRM_CONSISTENT:
 249                 case _DRM_GEM:
 250                         type = types[map->type];
 251                         break;
 252                 }
 253
 254                 if (map->mtrr < 0)
 255                         yesno = "no";
 256                 else
 257                         yesno = "yes";
 258
 259                 DRM_SYSCTL_PRINT(
 260                     "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n",
 261                     i, (unsigned long long)map->offset, map->size, type,
 262                     map->flags, (unsigned long)map->handle, yesno);
 263         }
 264         SYSCTL_OUT(req, "", 1);
 265
 266 done:
 267         free(tempmaps, DRM_MEM_DRIVER);
 268         return retcode;
 269 }
 270
 271 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 272 {
 273         struct drm_device        *dev = arg1;
 274         struct drm_device_dma *dma = dev->dma;
 275         struct drm_device_dma tempdma;
 276         int *templists;
 277         int i;
 278         char buf[128];
 279         int retcode;
 280
 281         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 282          * copy of the whole structure and the relevant data from buflist.
 283          */
 284         DRM_LOCK(dev);
 285         if (dma == NULL) {
 286                 DRM_UNLOCK(dev);
 287                 return 0;
 288         }
 289         DRM_SPINLOCK(&dev->dma_lock);
 290         tempdma = *dma;
 291         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 292             M_NOWAIT);
 293         for (i = 0; i < dma->buf_count; i++)
 294                 templists[i] = dma->buflist[i]->list;
 295         dma = &tempdma;
 296         DRM_SPINUNLOCK(&dev->dma_lock);
 297         DRM_UNLOCK(dev);
 298
 299         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 300         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 301                 if (dma->bufs[i].buf_count)
 302                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 303                                        i,
 304                                        dma->bufs[i].buf_size,
 305                                        dma->bufs[i].buf_count,
 306                                        atomic_read(&dma->bufs[i]
 307                                                    .freelist.count),
 308                                        dma->bufs[i].seg_count,
 309                                        dma->bufs[i].seg_count
 310                                        *(1 << dma->bufs[i].page_order),
 311                                        (dma->bufs[i].seg_count
 312                                         * (1 << dma->bufs[i].page_order))
 313                                        * (int)PAGE_SIZE / 1024);
 314         }
 315         DRM_SYSCTL_PRINT("\n");
 316         for (i = 0; i < dma->buf_count; i++) {
 317                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 318                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 319         }
 320         DRM_SYSCTL_PRINT("\n");
 321
 322         SYSCTL_OUT(req, "", 1);
 323 done:
 324         free(templists, DRM_MEM_DRIVER);
 325         return retcode;
 326 }
 327
 328 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 329 {
 330         struct drm_device *dev = arg1;
 331         struct drm_file *priv, *tempprivs;
 332         char buf[128];
 333         int retcode;
 334         int privcount, i;
 335
 336         DRM_LOCK(dev);
 337
 338         privcount = 0;
 339         list_for_each_entry(priv, &dev->filelist, lhead)
 340                 privcount++;
 341
 342         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 343             M_NOWAIT);
 344         if (tempprivs == NULL) {
 345                 DRM_UNLOCK(dev);
 346                 return ENOMEM;
 347         }
 348         i = 0;
 349         list_for_each_entry(priv, &dev->filelist, lhead)
 350                 tempprivs[i++] = *priv;
 351
 352         DRM_UNLOCK(dev);
 353
 354         DRM_SYSCTL_PRINT(
 355             "\na dev            pid   uid      magic     ioctls\n");
 356         for (i = 0; i < privcount; i++) {
 357                 priv = &tempprivs[i];
 358                 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
 359                                priv->authenticated ? 'y' : 'n',
 360                                devtoname(priv->minor->device),
 361                                priv->pid,
 362                                priv->uid,
 363                                priv->magic,
 364                                priv->ioctl_count);
 365         }
 366
 367         SYSCTL_OUT(req, "", 1);
 368 done:
 369         free(tempprivs, DRM_MEM_DRIVER);
 370         return retcode;
 371 }
 372
 373 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 374 {
 375         struct drm_device *dev = arg1;
 376         char buf[128];
 377         int retcode;
 378         int i;
 379
 380         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 381         DRM_LOCK(dev);
 382         if (dev->_vblank_count == NULL)
 383                 goto done;
 384         for (i = 0 ; i < dev->num_crtcs ; i++) {
 385                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 386                     i, dev->vblank_refcount[i],
 387                     dev->_vblank_count[i],
 388                     dev->last_vblank[i],
 389                     dev->vblank_enabled[i],
 390                     dev->vblank_inmodeset[i]);
 391         }
 392 done:
 393         DRM_UNLOCK(dev);
 394
 395         SYSCTL_OUT(req, "", -1);
 396         return retcode;
 397 }