sys/dev/drm/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  * $FreeBSD: src/sys/dev/drm2/drm_sysctl.c,v 1.1 2012/05/22 11:07:44 kib Exp $
  24  */
  25
  26 /** @file drm_sysctl.c
  27  * Implementation of various sysctls for controlling DRM behavior and reporting
  28  * debug information.
  29  */
  30
  31 #include <sys/conf.h>
  32 #include <sys/sysctl.h>
  33 #include <sys/types.h>
  34
  35 #include "dev/drm/drmP.h"
  36 #include "dev/drm/drm.h"
  37
  38 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  39 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  40 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  41 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  42 static int         drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
  43
  44 struct drm_sysctl_list {
  45         const char *name;
  46         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  47 } drm_sysctl_list[] = {
  48         {"name",    drm_name_info},
  49         {"vm",      drm_vm_info},
  50         {"clients", drm_clients_info},
  51         {"bufs",    drm_bufs_info},
  52         {"vblank",    drm_vblank_info},
  53 };
  54 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list)
  55
  56 struct drm_sysctl_info {
  57         struct sysctl_ctx_list ctx;
  58         char                   name[2];
  59 };
  60
  61 int drm_sysctl_init(struct drm_device *dev)
  62 {
  63         struct drm_sysctl_info *info;
  64         struct sysctl_oid *oid;
  65         struct sysctl_oid *top, *drioid;
  66         int               i;
  67
  68         info = kmalloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
  69         if ( !info )
  70                 return 1;
  71         dev->sysctl = info;
  72
  73         /* Add the sysctl node for DRI if it doesn't already exist */
  74         drioid = SYSCTL_ADD_NODE(&info->ctx, &sysctl__hw_children, OID_AUTO,
  75             "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  76         if (!drioid)
  77                 return 1;
  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                 return 1;
  87
  88         dev->sysctl_node_idx = i;
  89         /* Add the hw.dri.x for our device */
  90         info->name[0] = '0' + i;
  91         info->name[1] = 0;
  92         top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
  93             OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  94         if (!top)
  95                 return 1;
  96
  97         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  98                 oid = SYSCTL_ADD_OID(&info->ctx,
  99                         SYSCTL_CHILDREN(top),
 100                         OID_AUTO,
 101                         drm_sysctl_list[i].name,
 102                         CTLTYPE_STRING | CTLFLAG_RD,
 103                         dev,
 104                         0,
 105                         drm_sysctl_list[i].f,
 106                         "A",
 107                         NULL);
 108                 if (!oid)
 109                         return 1;
 110         }
 111         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
 112             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 113             "Enable debugging output");
 114         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
 115             CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug_flag),
 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         error = sysctl_ctx_free(&dev->sysctl->ctx);
 138         drm_free(dev->sysctl, DRM_MEM_DRIVER);
 139         dev->sysctl = NULL;
 140         if (dev->driver->sysctl_cleanup != NULL)
 141                 dev->driver->sysctl_cleanup(dev);
 142
 143         return (error);
 144 }
 145
 146 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 147 do {                                                            \
 148         ksnprintf(buf, sizeof(buf), fmt, ##arg);                        \
 149         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 150         if (retcode)                                            \
 151                 goto done;                                      \
 152 } while (0)
 153
 154 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 155 {
 156         struct drm_device *dev = arg1;
 157         char buf[128];
 158         int retcode;
 159         int hasunique = 0;
 160
 161         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode));
 162
 163         DRM_LOCK(dev);
 164         if (dev->unique) {
 165                 ksnprintf(buf, sizeof(buf), " %s", dev->unique);
 166                 hasunique = 1;
 167         }
 168         DRM_UNLOCK(dev);
 169
 170         if (hasunique)
 171                 SYSCTL_OUT(req, buf, strlen(buf));
 172
 173         SYSCTL_OUT(req, "", 1);
 174
 175 done:
 176         return retcode;
 177 }
 178
 179 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 180 {
 181         struct drm_device *dev = arg1;
 182         drm_local_map_t *map, *tempmaps;
 183         const char *types[] = {
 184                 [_DRM_FRAME_BUFFER] = "FB",
 185                 [_DRM_REGISTERS] = "REG",
 186                 [_DRM_SHM] = "SHM",
 187                 [_DRM_AGP] = "AGP",
 188                 [_DRM_SCATTER_GATHER] = "SG",
 189                 [_DRM_CONSISTENT] = "CONS",
 190                 [_DRM_GEM] = "GEM"
 191         };
 192         const char *type, *yesno;
 193         int i, mapcount;
 194         char buf[128];
 195         int retcode;
 196
 197         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 198          * temporary copy of all the map entries and then SYSCTL_OUT that.
 199          */
 200         DRM_LOCK(dev);
 201
 202         mapcount = 0;
 203         TAILQ_FOREACH(map, &dev->maplist, link)
 204                 mapcount++;
 205
 206         tempmaps = kmalloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 207             M_NOWAIT);
 208         if (tempmaps == NULL) {
 209                 DRM_UNLOCK(dev);
 210                 return ENOMEM;
 211         }
 212
 213         i = 0;
 214         TAILQ_FOREACH(map, &dev->maplist, link)
 215                 tempmaps[i++] = *map;
 216
 217         DRM_UNLOCK(dev);
 218
 219         DRM_SYSCTL_PRINT("\nslot offset         size       "
 220             "type flags address            handle mtrr\n");
 221
 222         for (i = 0; i < mapcount; i++) {
 223                 map = &tempmaps[i];
 224
 225                 switch(map->type) {
 226                 default:
 227                         type = "??";
 228                         break;
 229                 case _DRM_FRAME_BUFFER:
 230                 case _DRM_REGISTERS:
 231                 case _DRM_SHM:
 232                 case _DRM_AGP:
 233                 case _DRM_SCATTER_GATHER:
 234                 case _DRM_CONSISTENT:
 235                 case _DRM_GEM:
 236                         type = types[map->type];
 237                         break;
 238                 }
 239
 240                 if (!map->mtrr)
 241                         yesno = "no";
 242                 else
 243                         yesno = "yes";
 244
 245                 DRM_SYSCTL_PRINT(
 246                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %6d %s\n",
 247                     i, map->offset, map->size, type, map->flags,
 248                     (unsigned long)map->virtual,
 249                     (unsigned int)((unsigned long)map->handle >>
 250                     DRM_MAP_HANDLE_SHIFT), yesno);
 251         }
 252         SYSCTL_OUT(req, "", 1);
 253
 254 done:
 255         drm_free(tempmaps, DRM_MEM_DRIVER);
 256         return retcode;
 257 }
 258
 259 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 260 {
 261         struct drm_device        *dev = arg1;
 262         drm_device_dma_t *dma = dev->dma;
 263         drm_device_dma_t tempdma;
 264         int *templists;
 265         int i;
 266         char buf[128];
 267         int retcode;
 268
 269         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 270          * copy of the whole structure and the relevant data from buflist.
 271          */
 272         DRM_LOCK(dev);
 273         if (dma == NULL) {
 274                 DRM_UNLOCK(dev);
 275                 return 0;
 276         }
 277         spin_lock(&dev->dma_lock);
 278         tempdma = *dma;
 279         templists = kmalloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 280             M_NOWAIT);
 281         for (i = 0; i < dma->buf_count; i++)
 282                 templists[i] = dma->buflist[i]->list;
 283         dma = &tempdma;
 284         spin_unlock(&dev->dma_lock);
 285         DRM_UNLOCK(dev);
 286
 287         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 288         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 289                 if (dma->bufs[i].buf_count)
 290                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 291                                        i,
 292                                        dma->bufs[i].buf_size,
 293                                        dma->bufs[i].buf_count,
 294                                        atomic_read(&dma->bufs[i]
 295                                                    .freelist.count),
 296                                        dma->bufs[i].seg_count,
 297                                        dma->bufs[i].seg_count
 298                                        *(1 << dma->bufs[i].page_order),
 299                                        (dma->bufs[i].seg_count
 300                                         * (1 << dma->bufs[i].page_order))
 301                                        * (int)PAGE_SIZE / 1024);
 302         }
 303         DRM_SYSCTL_PRINT("\n");
 304         for (i = 0; i < dma->buf_count; i++) {
 305                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 306                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 307         }
 308         DRM_SYSCTL_PRINT("\n");
 309
 310         SYSCTL_OUT(req, "", 1);
 311 done:
 312         drm_free(templists, DRM_MEM_DRIVER);
 313         return retcode;
 314 }
 315
 316 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 317 {
 318         struct drm_device *dev = arg1;
 319         struct drm_file *priv, *tempprivs;
 320         char buf[128];
 321         int retcode;
 322         int privcount, i;
 323
 324         DRM_LOCK(dev);
 325
 326         privcount = 0;
 327         TAILQ_FOREACH(priv, &dev->files, link)
 328                 privcount++;
 329
 330         tempprivs = kmalloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 331             M_NOWAIT);
 332         if (tempprivs == NULL) {
 333                 DRM_UNLOCK(dev);
 334                 return ENOMEM;
 335         }
 336         i = 0;
 337         TAILQ_FOREACH(priv, &dev->files, link)
 338                 tempprivs[i++] = *priv;
 339
 340         DRM_UNLOCK(dev);
 341
 342         DRM_SYSCTL_PRINT(
 343             "\na dev            pid   uid      magic     ioctls\n");
 344         for (i = 0; i < privcount; i++) {
 345                 priv = &tempprivs[i];
 346                 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
 347                                priv->authenticated ? 'y' : 'n',
 348                                devtoname(priv->dev->devnode),
 349                                priv->pid,
 350                                priv->uid,
 351                                priv->magic,
 352                                priv->ioctl_count);
 353         }
 354
 355         SYSCTL_OUT(req, "", 1);
 356 done:
 357         drm_free(tempprivs, DRM_MEM_DRIVER);
 358         return retcode;
 359 }
 360
 361 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 362 {
 363         struct drm_device *dev = arg1;
 364         char buf[128];
 365         int retcode;
 366         int i;
 367
 368         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 369         DRM_LOCK(dev);
 370         if (dev->_vblank_count == NULL)
 371                 goto done;
 372         for (i = 0 ; i < dev->num_crtcs ; i++) {
 373                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 374                     i, dev->vblank_refcount[i],
 375                     dev->_vblank_count[i],
 376                     dev->last_vblank[i],
 377                     dev->vblank_enabled[i],
 378                     dev->vblank_inmodeset[i]);
 379         }
 380 done:
 381         DRM_UNLOCK(dev);
 382
 383         SYSCTL_OUT(req, "", -1);
 384         return retcode;
 385 }