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                 return 1;
  75
  76         /* Find the next free slot under hw.dri */
  77         i = 0;
  78         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  79                 if (i <= oid->oid_arg2)
  80                         i = oid->oid_arg2 + 1;
  81         }
  82         if (i > 9)
  83                 return (1);
  84
  85         dev->sysctl_node_idx = i;
  86         /* Add the hw.dri.x for our device */
  87         info->name[0] = '0' + i;
  88         info->name[1] = 0;
  89         top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
  90             OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  91         if (!top)
  92                 return 1;
  93
  94         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  95                 oid = SYSCTL_ADD_OID(&info->ctx,
  96                         SYSCTL_CHILDREN(top),
  97                         OID_AUTO,
  98                         drm_sysctl_list[i].name,
  99                         CTLTYPE_STRING | CTLFLAG_RD,
 100                         dev,
 101                         0,
 102                         drm_sysctl_list[i].f,
 103                         "A",
 104                         NULL);
 105                 if (!oid)
 106                         return 1;
 107         }
 108         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
 109             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 110             "Enable debugging output");
 111         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
 112             CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug_flag),
 113             "Enable notyet reminders");
 114
 115         if (dev->driver->sysctl_init != NULL)
 116                 dev->driver->sysctl_init(dev, &info->ctx, top);
 117
 118         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 119             "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
 120             sizeof(drm_vblank_offdelay),
 121             "");
 122         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
 123             "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
 124             sizeof(drm_timestamp_precision),
 125             "");
 126
 127         return (0);
 128 }
 129
 130 int drm_sysctl_cleanup(struct drm_device *dev)
 131 {
 132         int error;
 133
 134         error = sysctl_ctx_free(&dev->sysctl->ctx);
 135         free(dev->sysctl, DRM_MEM_DRIVER);
 136         dev->sysctl = NULL;
 137         if (dev->driver->sysctl_cleanup != NULL)
 138                 dev->driver->sysctl_cleanup(dev);
 139
 140         return (error);
 141 }
 142
 143 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 144 do {                                                            \
 145         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 146         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 147         if (retcode)                                            \
 148                 goto done;                                      \
 149 } while (0)
 150
 151 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 152 {
 153         struct drm_device *dev = arg1;
 154         char buf[128];
 155         int retcode;
 156         int hasunique = 0;
 157
 158         DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name,
 159             (uintmax_t)dev2udev(dev->devnode));
 160
 161         DRM_LOCK(dev);
 162         if (dev->unique) {
 163                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 164                 hasunique = 1;
 165         }
 166         DRM_UNLOCK(dev);
 167
 168         if (hasunique)
 169                 SYSCTL_OUT(req, buf, strlen(buf));
 170
 171         SYSCTL_OUT(req, "", 1);
 172
 173 done:
 174         return retcode;
 175 }
 176
 177 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 178 {
 179         struct drm_device *dev = arg1;
 180         drm_local_map_t *map, *tempmaps;
 181         const char *types[] = {
 182                 [_DRM_FRAME_BUFFER] = "FB",
 183                 [_DRM_REGISTERS] = "REG",
 184                 [_DRM_SHM] = "SHM",
 185                 [_DRM_AGP] = "AGP",
 186                 [_DRM_SCATTER_GATHER] = "SG",
 187                 [_DRM_CONSISTENT] = "CONS",
 188                 [_DRM_GEM] = "GEM"
 189         };
 190         const char *type, *yesno;
 191         int i, mapcount;
 192         char buf[128];
 193         int retcode;
 194
 195         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 196          * temporary copy of all the map entries and then SYSCTL_OUT that.
 197          */
 198         DRM_LOCK(dev);
 199
 200         mapcount = 0;
 201         TAILQ_FOREACH(map, &dev->maplist, link)
 202                 mapcount++;
 203
 204         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 205             M_NOWAIT);
 206         if (tempmaps == NULL) {
 207                 DRM_UNLOCK(dev);
 208                 return ENOMEM;
 209         }
 210
 211         i = 0;
 212         TAILQ_FOREACH(map, &dev->maplist, link)
 213                 tempmaps[i++] = *map;
 214
 215         DRM_UNLOCK(dev);
 216
 217         DRM_SYSCTL_PRINT("\nslot offset         size       "
 218             "type flags address            handle mtrr\n");
 219
 220         for (i = 0; i < mapcount; i++) {
 221                 map = &tempmaps[i];
 222
 223                 switch(map->type) {
 224                 default:
 225                         type = "??";
 226                         break;
 227                 case _DRM_FRAME_BUFFER:
 228                 case _DRM_REGISTERS:
 229                 case _DRM_SHM:
 230                 case _DRM_AGP:
 231                 case _DRM_SCATTER_GATHER:
 232                 case _DRM_CONSISTENT:
 233                 case _DRM_GEM:
 234                         type = types[map->type];
 235                         break;
 236                 }
 237
 238                 if (!map->mtrr)
 239                         yesno = "no";
 240                 else
 241                         yesno = "yes";
 242
 243                 DRM_SYSCTL_PRINT(
 244                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %6d %s\n",
 245                     i, map->offset, map->size, type, map->flags,
 246                     (unsigned long)map->virtual,
 247                     (unsigned int)((unsigned long)map->handle >>
 248                     DRM_MAP_HANDLE_SHIFT), yesno);
 249         }
 250         SYSCTL_OUT(req, "", 1);
 251
 252 done:
 253         free(tempmaps, DRM_MEM_DRIVER);
 254         return retcode;
 255 }
 256
 257 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 258 {
 259         struct drm_device        *dev = arg1;
 260         drm_device_dma_t *dma = dev->dma;
 261         drm_device_dma_t tempdma;
 262         int *templists;
 263         int i;
 264         char buf[128];
 265         int retcode;
 266
 267         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 268          * copy of the whole structure and the relevant data from buflist.
 269          */
 270         DRM_LOCK(dev);
 271         if (dma == NULL) {
 272                 DRM_UNLOCK(dev);
 273                 return 0;
 274         }
 275         DRM_SPINLOCK(&dev->dma_lock);
 276         tempdma = *dma;
 277         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 278             M_NOWAIT);
 279         for (i = 0; i < dma->buf_count; i++)
 280                 templists[i] = dma->buflist[i]->list;
 281         dma = &tempdma;
 282         DRM_SPINUNLOCK(&dev->dma_lock);
 283         DRM_UNLOCK(dev);
 284
 285         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 286         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 287                 if (dma->bufs[i].buf_count)
 288                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 289                                        i,
 290                                        dma->bufs[i].buf_size,
 291                                        dma->bufs[i].buf_count,
 292                                        atomic_read(&dma->bufs[i]
 293                                                    .freelist.count),
 294                                        dma->bufs[i].seg_count,
 295                                        dma->bufs[i].seg_count
 296                                        *(1 << dma->bufs[i].page_order),
 297                                        (dma->bufs[i].seg_count
 298                                         * (1 << dma->bufs[i].page_order))
 299                                        * (int)PAGE_SIZE / 1024);
 300         }
 301         DRM_SYSCTL_PRINT("\n");
 302         for (i = 0; i < dma->buf_count; i++) {
 303                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 304                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 305         }
 306         DRM_SYSCTL_PRINT("\n");
 307
 308         SYSCTL_OUT(req, "", 1);
 309 done:
 310         free(templists, DRM_MEM_DRIVER);
 311         return retcode;
 312 }
 313
 314 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 315 {
 316         struct drm_device *dev = arg1;
 317         struct drm_file *priv, *tempprivs;
 318         char buf[128];
 319         int retcode;
 320         int privcount, i;
 321
 322         DRM_LOCK(dev);
 323
 324         privcount = 0;
 325         TAILQ_FOREACH(priv, &dev->files, link)
 326                 privcount++;
 327
 328         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 329             M_NOWAIT);
 330         if (tempprivs == NULL) {
 331                 DRM_UNLOCK(dev);
 332                 return ENOMEM;
 333         }
 334         i = 0;
 335         TAILQ_FOREACH(priv, &dev->files, link)
 336                 tempprivs[i++] = *priv;
 337
 338         DRM_UNLOCK(dev);
 339
 340         DRM_SYSCTL_PRINT(
 341             "\na dev            pid   uid      magic     ioctls\n");
 342         for (i = 0; i < privcount; i++) {
 343                 priv = &tempprivs[i];
 344                 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
 345                                priv->authenticated ? 'y' : 'n',
 346                                devtoname(priv->dev->devnode),
 347                                priv->pid,
 348                                priv->uid,
 349                                priv->magic,
 350                                priv->ioctl_count);
 351         }
 352
 353         SYSCTL_OUT(req, "", 1);
 354 done:
 355         free(tempprivs, DRM_MEM_DRIVER);
 356         return retcode;
 357 }
 358
 359 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 360 {
 361         struct drm_device *dev = arg1;
 362         char buf[128];
 363         int retcode;
 364         int i;
 365
 366         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 367         DRM_LOCK(dev);
 368         if (dev->_vblank_count == NULL)
 369                 goto done;
 370         for (i = 0 ; i < dev->num_crtcs ; i++) {
 371                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 372                     i, dev->vblank_refcount[i],
 373                     dev->_vblank_count[i],
 374                     dev->last_vblank[i],
 375                     dev->vblank_enabled[i],
 376                     dev->vblank_inmodeset[i]);
 377         }
 378 done:
 379         DRM_UNLOCK(dev);
 380
 381         SYSCTL_OUT(req, "", -1);
 382         return retcode;
 383 }