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