sys/external/bsd/drm/dist/bsd-core/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 /** @file drm_sysctl.c
  25  * Implementation of various sysctls for controlling DRM behavior and reporting
  26  * debug information.
  27  */
  28
  29 #include "drmP.h"
  30 #include "drm.h"
  31
  32 #include <sys/sysctl.h>
  33
  34 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  35 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  36 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  37 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  38
  39 struct drm_sysctl_list {
  40         const char *name;
  41         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  42 } drm_sysctl_list[] = {
  43         {"name",    drm_name_info},
  44         {"vm",      drm_vm_info},
  45         {"clients", drm_clients_info},
  46         {"bufs",    drm_bufs_info},
  47 };
  48 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
  49
  50 struct drm_sysctl_info {
  51 #if defined(__FreeBSD__)
  52         struct sysctl_ctx_list ctx;
  53         char                   name[2];
  54 #elif   defined(__NetBSD__)
  55         const struct sysctlnode *dri, *dri_card, *dri_debug;
  56         const struct sysctlnode *dri_rest[DRM_SYSCTL_ENTRIES];
  57         char                   name[7];
  58 #endif
  59 };
  60
  61 int drm_sysctl_init(struct drm_device *dev)
  62 {
  63         struct drm_sysctl_info *info;
  64 #if defined(__FreeBSD__)
  65         struct sysctl_oid *oid;
  66         struct sysctl_oid *top, *drioid;
  67 #endif
  68         int               i;
  69
  70         info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
  71         if ( !info )
  72                 return 1;
  73         dev->sysctl = info;
  74
  75 #if defined(__FreeBSD__)
  76         /* Add the sysctl node for DRI if it doesn't already exist */
  77         drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  78         if (!drioid)
  79                 return 1;
  80
  81         /* Find the next free slot under hw.dri */
  82         i = 0;
  83         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  84                 if (i <= oid->oid_arg2)
  85                         i = oid->oid_arg2 + 1;
  86         }
  87         if (i>9)
  88                 return 1;
  89
  90         /* Add the hw.dri.x for our device */
  91         info->name[0] = '0' + i;
  92         info->name[1] = 0;
  93         top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), 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_INT | 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(top), OID_AUTO, "debug",
 112             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 113             "Enable debugging output");
 114 #elif   defined(__NetBSD__)
 115         sysctl_createv(NULL, 0, NULL, &info->dri,
 116                         CTLFLAG_READWRITE, CTLTYPE_NODE,
 117                         "dri", SYSCTL_DESCR("DRI Graphics"), NULL, 0, NULL, 0,
 118                         CTL_HW, CTL_CREATE);
 119         snprintf(info->name, 7, "card%d", minor(dev->kdev));
 120         sysctl_createv(NULL, 0, NULL, &info->dri_card,
 121                         CTLFLAG_READWRITE, CTLTYPE_NODE,
 122                         info->name, NULL, NULL, 0, NULL, 0,
 123                         CTL_HW, info->dri->sysctl_num, CTL_CREATE);
 124         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++)
 125                 sysctl_createv(NULL, 0, NULL, &(info->dri_rest[i]),
 126                                 CTLFLAG_READONLY, CTLTYPE_STRING,
 127                                 drm_sysctl_list[i].name, NULL,
 128                                 drm_sysctl_list[i].f, 0, dev,
 129                                 sizeof(struct drm_device*),
 130                                 CTL_HW,
 131                                 info->dri->sysctl_num,
 132                                 info->dri_card->sysctl_num, CTL_CREATE);
 133         sysctl_createv(NULL, 0, NULL, &info->dri_debug,
 134                         CTLFLAG_READWRITE, CTLTYPE_INT,
 135                         "debug", SYSCTL_DESCR("Enable debugging output"),
 136                         NULL, 0,
 137                         &drm_debug_flag, sizeof(drm_debug_flag),
 138                         CTL_HW, info->dri->sysctl_num, CTL_CREATE);
 139 #endif
 140
 141         return 0;
 142 }
 143
 144 int drm_sysctl_cleanup(struct drm_device *dev)
 145 {
 146 #if defined(__FreeBSD__)
 147         int error;
 148         error = sysctl_ctx_free( &dev->sysctl->ctx );
 149
 150         free(dev->sysctl, DRM_MEM_DRIVER);
 151         dev->sysctl = NULL;
 152
 153         return error;
 154 #elif   defined(__NetBSD__)
 155         int i;
 156
 157         sysctl_destroyv(NULL, CTL_HW, dev->sysctl->dri->sysctl_num,
 158                                       dev->sysctl->dri_debug->sysctl_num,
 159                                       CTL_DESTROY);
 160         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++)
 161                 sysctl_destroyv(NULL, CTL_HW, dev->sysctl->dri->sysctl_num,
 162                                               dev->sysctl->dri_card->sysctl_num,
 163                                            dev->sysctl->dri_rest[i]->sysctl_num,
 164                                               CTL_DESTROY);
 165         sysctl_destroyv(NULL, CTL_HW, dev->sysctl->dri->sysctl_num,
 166                                       dev->sysctl->dri_card->sysctl_num,
 167                                       CTL_DESTROY);
 168         sysctl_destroyv(NULL, CTL_HW, dev->sysctl->dri->sysctl_num, CTL_DESTROY);
 169
 170         free(dev->sysctl, DRM_MEM_DRIVER);
 171         dev->sysctl = NULL;
 172
 173         return 0;
 174 #endif
 175 }
 176
 177 #ifdef __NetBSD__
 178 #define SYSCTL_OUT(x, y, z) \
 179         (len+=z,(len<*oldlenp)?(strcat((char*)oldp, y),0):EOVERFLOW)
 180 #endif
 181
 182 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 183 do {                                                            \
 184         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 185         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 186         if (retcode)                                            \
 187                 goto done;                                      \
 188 } while (0)
 189
 190 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 191 {
 192 #if defined(__FreeBSD__)
 193         struct drm_device *dev = arg1;
 194 #elif   defined(__NetBSD__)
 195         struct drm_device *dev = rnode->sysctl_data;
 196         int len = 0;
 197 #endif
 198         char buf[128];
 199         int retcode;
 200         int hasunique = 0;
 201
 202 #if defined(__FreeBSD__)
 203         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode));
 204 #elif   defined(__NetBSD__)
 205         if (oldp == NULL)
 206                 return EINVAL;
 207         *((char*)oldp) = '\0';
 208
 209         DRM_SYSCTL_PRINT("%s", dev->driver->name);
 210 #endif
 211
 212         DRM_LOCK();
 213         if (dev->unique) {
 214                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 215                 hasunique = 1;
 216         }
 217         DRM_UNLOCK();
 218
 219         if (hasunique)
 220                 SYSCTL_OUT(req, buf, strlen(buf));
 221
 222         SYSCTL_OUT(req, "", 1);
 223
 224 done:
 225         return retcode;
 226 }
 227
 228 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 229 {
 230 #if defined(__FreeBSD__)
 231         struct drm_device *dev = arg1;
 232 #elif   defined(__NetBSD__)
 233         struct drm_device *dev = rnode->sysctl_data;
 234         int len = 0;
 235 #endif
 236         drm_local_map_t *map, *tempmaps;
 237         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 238         const char *type, *yesno;
 239         int i, mapcount;
 240         char buf[128];
 241         int retcode;
 242
 243         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 244          * temporary copy of all the map entries and then SYSCTL_OUT that.
 245          */
 246         DRM_LOCK();
 247
 248         mapcount = 0;
 249         TAILQ_FOREACH(map, &dev->maplist, link)
 250                 mapcount++;
 251
 252         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 253             M_NOWAIT);
 254         if (tempmaps == NULL) {
 255                 DRM_UNLOCK();
 256                 return ENOMEM;
 257         }
 258
 259         i = 0;
 260         TAILQ_FOREACH(map, &dev->maplist, link)
 261                 tempmaps[i++] = *map;
 262
 263         DRM_UNLOCK();
 264
 265         DRM_SYSCTL_PRINT("\nslot offset         size       "
 266             "type flags address            mtrr\n");
 267
 268         for (i = 0; i < mapcount; i++) {
 269                 map = &tempmaps[i];
 270
 271                 if (map->type > 4)
 272                         type = "??";
 273                 else
 274                         type = types[map->type];
 275
 276                 if (!map->mtrr)
 277                         yesno = "no";
 278                 else
 279                         yesno = "yes";
 280
 281                 DRM_SYSCTL_PRINT(
 282                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n", i,
 283                     map->offset, map->size, type, map->flags,
 284                     (unsigned long)map->handle, yesno);
 285         }
 286         SYSCTL_OUT(req, "", 1);
 287
 288 done:
 289         free(tempmaps, DRM_MEM_DRIVER);
 290         return retcode;
 291 }
 292
 293 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 294 {
 295 #if defined(__FreeBSD__)
 296         struct drm_device *dev = arg1;
 297 #elif   defined(__NetBSD__)
 298         struct drm_device *dev = rnode->sysctl_data;
 299         int len = 0;
 300 #endif
 301         drm_device_dma_t *dma = dev->dma;
 302         drm_device_dma_t tempdma;
 303         int *templists;
 304         int i;
 305         char buf[128];
 306         int retcode;
 307
 308         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 309          * copy of the whole structure and the relevant data from buflist.
 310          */
 311         DRM_LOCK();
 312         if (dma == NULL) {
 313                 DRM_UNLOCK();
 314                 return 0;
 315         }
 316         DRM_SPINLOCK(&dev->dma_lock);
 317         tempdma = *dma;
 318         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 319             M_NOWAIT);
 320         for (i = 0; i < dma->buf_count; i++)
 321                 templists[i] = dma->buflist[i]->list;
 322         dma = &tempdma;
 323         DRM_SPINUNLOCK(&dev->dma_lock);
 324         DRM_UNLOCK();
 325
 326         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 327         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 328                 if (dma->bufs[i].buf_count)
 329                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 330                                        i,
 331                                        dma->bufs[i].buf_size,
 332                                        dma->bufs[i].buf_count,
 333                                        atomic_read(&dma->bufs[i]
 334                                                    .freelist.count),
 335                                        dma->bufs[i].seg_count,
 336                                        dma->bufs[i].seg_count
 337                                        *(1 << dma->bufs[i].page_order),
 338                                        (dma->bufs[i].seg_count
 339                                         * (1 << dma->bufs[i].page_order))
 340                                        * PAGE_SIZE / 1024);
 341         }
 342         DRM_SYSCTL_PRINT("\n");
 343         for (i = 0; i < dma->buf_count; i++) {
 344                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 345                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 346         }
 347         DRM_SYSCTL_PRINT("\n");
 348
 349         SYSCTL_OUT(req, "", 1);
 350 done:
 351         free(templists, DRM_MEM_DRIVER);
 352         return retcode;
 353 }
 354
 355 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 356 {
 357 #if defined(__FreeBSD__)
 358         struct drm_device *dev = arg1;
 359 #elif   defined(__NetBSD__)
 360         struct drm_device *dev = rnode->sysctl_data;
 361         int len = 0;
 362 #endif
 363         struct drm_file *priv, *tempprivs;
 364         char buf[128];
 365         int retcode;
 366         int privcount, i;
 367
 368         DRM_LOCK();
 369
 370         privcount = 0;
 371         TAILQ_FOREACH(priv, &dev->files, link)
 372                 privcount++;
 373
 374         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 375             M_NOWAIT);
 376         if (tempprivs == NULL) {
 377                 DRM_UNLOCK();
 378                 return ENOMEM;
 379         }
 380         i = 0;
 381         TAILQ_FOREACH(priv, &dev->files, link)
 382                 tempprivs[i++] = *priv;
 383
 384         DRM_UNLOCK();
 385
 386         DRM_SYSCTL_PRINT("\na dev       pid    uid      magic     ioctls\n");
 387         for (i = 0; i < privcount; i++) {
 388                 priv = &tempprivs[i];
 389                 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
 390                                priv->authenticated ? 'y' : 'n',
 391                                priv->minor,
 392                                priv->pid,
 393                                priv->uid,
 394                                priv->magic,
 395                                priv->ioctl_count);
 396         }
 397
 398         SYSCTL_OUT(req, "", 1);
 399 done:
 400         free(tempprivs, DRM_MEM_DRIVER);
 401         return retcode;
 402 }