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 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, 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, 103 SYSCTL_CHILDREN(top), 104 OID_AUTO, 105 drm_sysctl_list[i].name, 106 CTLTYPE_STRING | CTLFLAG_RD, 107 dev, 108 0, 109 drm_sysctl_list[i].f, 110 "A", 111 NULL); 112 if (!oid) { 113 drm_sysctl_cleanup(dev); 114 return (-ENOMEM); 115 } 116 } 117 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 118 CTLFLAG_RW, &drm_debug, sizeof(drm_debug), 119 "Enable debugging output"); 120 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 121 CTLFLAG_RW, &drm_notyet, sizeof(drm_debug), 122 "Enable notyet reminders"); 123 124 if (dev->driver->sysctl_init != NULL) 125 dev->driver->sysctl_init(dev, &info->ctx, top); 126 127 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 128 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 129 sizeof(drm_vblank_offdelay), 130 ""); 131 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 132 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 133 sizeof(drm_timestamp_precision), 134 ""); 135 136 return (0); 137 } 138 139 int drm_sysctl_cleanup(struct drm_device *dev) 140 { 141 int error; 142 143 if (dev->sysctl == NULL) 144 return (0); 145 146 error = sysctl_ctx_free(&dev->sysctl->ctx); 147 free(dev->sysctl, DRM_MEM_DRIVER); 148 dev->sysctl = NULL; 149 if (dev->driver->sysctl_cleanup != NULL) 150 dev->driver->sysctl_cleanup(dev); 151 152 return (-error); 153 } 154 155 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 156 do { \ 157 snprintf(buf, sizeof(buf), fmt, ##arg); \ 158 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 159 if (retcode) \ 160 goto done; \ 161 } while (0) 162 163 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 164 { 165 struct drm_device *dev = arg1; 166 struct drm_minor *minor; 167 struct drm_master *master; 168 char buf[128]; 169 int retcode; 170 int hasunique = 0; 171 172 /* FIXME: This still uses primary minor. */ 173 minor = dev->primary; 174 DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name, 175 (uintmax_t)dev2udev(minor->device)); 176 177 DRM_LOCK(dev); 178 master = minor->master; 179 if (master != NULL && master->unique) { 180 snprintf(buf, sizeof(buf), " %s", master->unique); 181 hasunique = 1; 182 } 183 DRM_UNLOCK(dev); 184 185 if (hasunique) 186 SYSCTL_OUT(req, buf, strlen(buf)); 187 188 SYSCTL_OUT(req, "", 1); 189 190 done: 191 return retcode; 192 } 193 194 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 195 { 196 struct drm_device *dev = arg1; 197 struct drm_map_list *entry; 198 struct drm_local_map *map, *tempmaps; 199 const char *types[] = { 200 [_DRM_FRAME_BUFFER] = "FB", 201 [_DRM_REGISTERS] = "REG", 202 [_DRM_SHM] = "SHM", 203 [_DRM_AGP] = "AGP", 204 [_DRM_SCATTER_GATHER] = "SG", 205 [_DRM_CONSISTENT] = "CONS", 206 [_DRM_GEM] = "GEM" 207 }; 208 const char *type, *yesno; 209 int i, mapcount; 210 char buf[128]; 211 int retcode; 212 213 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 214 * temporary copy of all the map entries and then SYSCTL_OUT that. 215 */ 216 DRM_LOCK(dev); 217 218 mapcount = 0; 219 list_for_each_entry(entry, &dev->maplist, head) { 220 if (entry->map != NULL) 221 mapcount++; 222 } 223 224 tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER, 225 M_NOWAIT); 226 if (tempmaps == NULL) { 227 DRM_UNLOCK(dev); 228 return ENOMEM; 229 } 230 231 i = 0; 232 list_for_each_entry(entry, &dev->maplist, head) { 233 if (entry->map != NULL) 234 tempmaps[i++] = *entry->map; 235 } 236 237 DRM_UNLOCK(dev); 238 239 DRM_SYSCTL_PRINT("\nslot offset size " 240 "type flags address mtrr\n"); 241 242 for (i = 0; i < mapcount; i++) { 243 map = &tempmaps[i]; 244 245 switch(map->type) { 246 default: 247 type = "??"; 248 break; 249 case _DRM_FRAME_BUFFER: 250 case _DRM_REGISTERS: 251 case _DRM_SHM: 252 case _DRM_AGP: 253 case _DRM_SCATTER_GATHER: 254 case _DRM_CONSISTENT: 255 case _DRM_GEM: 256 type = types[map->type]; 257 break; 258 } 259 260 if (map->mtrr < 0) 261 yesno = "no"; 262 else 263 yesno = "yes"; 264 265 DRM_SYSCTL_PRINT( 266 "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", 267 i, (unsigned long long)map->offset, map->size, type, 268 map->flags, (unsigned long)map->handle, yesno); 269 } 270 SYSCTL_OUT(req, "", 1); 271 272 done: 273 free(tempmaps, DRM_MEM_DRIVER); 274 return retcode; 275 } 276 277 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 278 { 279 struct drm_device *dev = arg1; 280 struct drm_device_dma *dma = dev->dma; 281 struct drm_device_dma tempdma; 282 int *templists; 283 int i; 284 char buf[128]; 285 int retcode; 286 287 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 288 * copy of the whole structure and the relevant data from buflist. 289 */ 290 DRM_LOCK(dev); 291 if (dma == NULL) { 292 DRM_UNLOCK(dev); 293 return 0; 294 } 295 DRM_SPINLOCK(&dev->dma_lock); 296 tempdma = *dma; 297 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 298 M_NOWAIT); 299 for (i = 0; i < dma->buf_count; i++) 300 templists[i] = dma->buflist[i]->list; 301 dma = &tempdma; 302 DRM_SPINUNLOCK(&dev->dma_lock); 303 DRM_UNLOCK(dev); 304 305 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 306 for (i = 0; i <= DRM_MAX_ORDER; i++) { 307 if (dma->bufs[i].buf_count) 308 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 309 i, 310 dma->bufs[i].buf_size, 311 dma->bufs[i].buf_count, 312 atomic_read(&dma->bufs[i] 313 .freelist.count), 314 dma->bufs[i].seg_count, 315 dma->bufs[i].seg_count 316 *(1 << dma->bufs[i].page_order), 317 (dma->bufs[i].seg_count 318 * (1 << dma->bufs[i].page_order)) 319 * (int)PAGE_SIZE / 1024); 320 } 321 DRM_SYSCTL_PRINT("\n"); 322 for (i = 0; i < dma->buf_count; i++) { 323 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 324 DRM_SYSCTL_PRINT(" %d", templists[i]); 325 } 326 DRM_SYSCTL_PRINT("\n"); 327 328 SYSCTL_OUT(req, "", 1); 329 done: 330 free(templists, DRM_MEM_DRIVER); 331 return retcode; 332 } 333 334 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 335 { 336 struct drm_device *dev = arg1; 337 struct drm_file *priv, *tempprivs; 338 char buf[128]; 339 int retcode; 340 int privcount, i; 341 342 DRM_LOCK(dev); 343 344 privcount = 0; 345 list_for_each_entry(priv, &dev->filelist, lhead) 346 privcount++; 347 348 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 349 M_NOWAIT); 350 if (tempprivs == NULL) { 351 DRM_UNLOCK(dev); 352 return ENOMEM; 353 } 354 i = 0; 355 list_for_each_entry(priv, &dev->filelist, lhead) 356 tempprivs[i++] = *priv; 357 358 DRM_UNLOCK(dev); 359 360 DRM_SYSCTL_PRINT( 361 "\na dev pid uid magic ioctls\n"); 362 for (i = 0; i < privcount; i++) { 363 priv = &tempprivs[i]; 364 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 365 priv->authenticated ? 'y' : 'n', 366 devtoname(priv->minor->device), 367 priv->pid, 368 priv->uid, 369 priv->magic, 370 priv->ioctl_count); 371 } 372 373 SYSCTL_OUT(req, "", 1); 374 done: 375 free(tempprivs, DRM_MEM_DRIVER); 376 return retcode; 377 } 378 379 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 380 { 381 struct drm_device *dev = arg1; 382 char buf[128]; 383 int retcode; 384 int i; 385 386 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 387 DRM_LOCK(dev); 388 if (dev->_vblank_count == NULL) 389 goto done; 390 for (i = 0 ; i < dev->num_crtcs ; i++) { 391 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 392 i, dev->vblank_refcount[i], 393 dev->_vblank_count[i], 394 dev->last_vblank[i], 395 dev->vblank_enabled[i], 396 dev->vblank_inmodeset[i]); 397 } 398 done: 399 DRM_UNLOCK(dev); 400 401 SYSCTL_OUT(req, "", -1); 402 return retcode; 403 } 404