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__hw_children, 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%x", dev->driver->name, dev2udev(dev->devnode));
 159
 160         DRM_LOCK(dev);
 161         if (dev->unique) {
 162                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 163                 hasunique = 1;
 164         }
 165         DRM_UNLOCK(dev);
 166
 167         if (hasunique)
 168                 SYSCTL_OUT(req, buf, strlen(buf));
 169
 170         SYSCTL_OUT(req, "", 1);
 171
 172 done:
 173         return retcode;
 174 }
 175
 176 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 177 {
 178         struct drm_device *dev = arg1;
 179         drm_local_map_t *map, *tempmaps;
 180         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 181         const char *type, *yesno;
 182         int i, mapcount;
 183         char buf[128];
 184         int retcode;
 185
 186         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 187          * temporary copy of all the map entries and then SYSCTL_OUT that.
 188          */
 189         DRM_LOCK(dev);
 190
 191         mapcount = 0;
 192         TAILQ_FOREACH(map, &dev->maplist, link)
 193                 mapcount++;
 194
 195         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 196             M_NOWAIT);
 197         if (tempmaps == NULL) {
 198                 DRM_UNLOCK(dev);
 199                 return ENOMEM;
 200         }
 201
 202         i = 0;
 203         TAILQ_FOREACH(map, &dev->maplist, link)
 204                 tempmaps[i++] = *map;
 205
 206         DRM_UNLOCK(dev);
 207
 208         DRM_SYSCTL_PRINT("\nslot offset         size       "
 209             "type flags address            handle mtrr\n");
 210
 211         for (i = 0; i < mapcount; i++) {
 212                 map = &tempmaps[i];
 213
 214                 if (map->type < 0 || map->type > 4)
 215                         type = "??";
 216                 else
 217                         type = types[map->type];
 218
 219                 if (!map->mtrr)
 220                         yesno = "no";
 221                 else
 222                         yesno = "yes";
 223
 224                 DRM_SYSCTL_PRINT(
 225                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %6d %s\n",
 226                     i, map->offset, map->size, type, map->flags,
 227                     (unsigned long)map->virtual,
 228                     (unsigned int)((unsigned long)map->handle >>
 229                     DRM_MAP_HANDLE_SHIFT), yesno);
 230         }
 231         SYSCTL_OUT(req, "", 1);
 232
 233 done:
 234         free(tempmaps, DRM_MEM_DRIVER);
 235         return retcode;
 236 }
 237
 238 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 239 {
 240         struct drm_device        *dev = arg1;
 241         drm_device_dma_t *dma = dev->dma;
 242         drm_device_dma_t tempdma;
 243         int *templists;
 244         int i;
 245         char buf[128];
 246         int retcode;
 247
 248         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 249          * copy of the whole structure and the relevant data from buflist.
 250          */
 251         DRM_LOCK(dev);
 252         if (dma == NULL) {
 253                 DRM_UNLOCK(dev);
 254                 return 0;
 255         }
 256         DRM_SPINLOCK(&dev->dma_lock);
 257         tempdma = *dma;
 258         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 259             M_NOWAIT);
 260         for (i = 0; i < dma->buf_count; i++)
 261                 templists[i] = dma->buflist[i]->list;
 262         dma = &tempdma;
 263         DRM_SPINUNLOCK(&dev->dma_lock);
 264         DRM_UNLOCK(dev);
 265
 266         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 267         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 268                 if (dma->bufs[i].buf_count)
 269                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 270                                        i,
 271                                        dma->bufs[i].buf_size,
 272                                        dma->bufs[i].buf_count,
 273                                        atomic_read(&dma->bufs[i]
 274                                                    .freelist.count),
 275                                        dma->bufs[i].seg_count,
 276                                        dma->bufs[i].seg_count
 277                                        *(1 << dma->bufs[i].page_order),
 278                                        (dma->bufs[i].seg_count
 279                                         * (1 << dma->bufs[i].page_order))
 280                                        * (int)PAGE_SIZE / 1024);
 281         }
 282         DRM_SYSCTL_PRINT("\n");
 283         for (i = 0; i < dma->buf_count; i++) {
 284                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 285                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 286         }
 287         DRM_SYSCTL_PRINT("\n");
 288
 289         SYSCTL_OUT(req, "", 1);
 290 done:
 291         free(templists, DRM_MEM_DRIVER);
 292         return retcode;
 293 }
 294
 295 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 296 {
 297         struct drm_device *dev = arg1;
 298         struct drm_file *priv, *tempprivs;
 299         char buf[128];
 300         int retcode;
 301         int privcount, i;
 302
 303         DRM_LOCK(dev);
 304
 305         privcount = 0;
 306         TAILQ_FOREACH(priv, &dev->files, link)
 307                 privcount++;
 308
 309         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 310             M_NOWAIT);
 311         if (tempprivs == NULL) {
 312                 DRM_UNLOCK(dev);
 313                 return ENOMEM;
 314         }
 315         i = 0;
 316         TAILQ_FOREACH(priv, &dev->files, link)
 317                 tempprivs[i++] = *priv;
 318
 319         DRM_UNLOCK(dev);
 320
 321         DRM_SYSCTL_PRINT(
 322             "\na dev            pid   uid      magic     ioctls\n");
 323         for (i = 0; i < privcount; i++) {
 324                 priv = &tempprivs[i];
 325                 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
 326                                priv->authenticated ? 'y' : 'n',
 327                                devtoname(priv->dev->devnode),
 328                                priv->pid,
 329                                priv->uid,
 330                                priv->magic,
 331                                priv->ioctl_count);
 332         }
 333
 334         SYSCTL_OUT(req, "", 1);
 335 done:
 336         free(tempprivs, DRM_MEM_DRIVER);
 337         return retcode;
 338 }
 339
 340 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 341 {
 342         struct drm_device *dev = arg1;
 343         char buf[128];
 344         int retcode;
 345         int i;
 346
 347         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 348         DRM_LOCK(dev);
 349         if (dev->_vblank_count == NULL)
 350                 goto done;
 351         for (i = 0 ; i < dev->num_crtcs ; i++) {
 352                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 353                     i, dev->vblank_refcount[i],
 354                     dev->_vblank_count[i],
 355                     dev->last_vblank[i],
 356                     dev->vblank_enabled[i],
 357                     dev->vblank_inmodeset[i]);
 358         }
 359 done:
 360         DRM_UNLOCK(dev);
 361
 362         SYSCTL_OUT(req, "", -1);
 363         return retcode;
 364 }