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 /** @file drm_sysctl.c 26 * Implementation of various sysctls for controlling DRM behavior and reporting 27 * debug information. 28 */ 29 30 #include <dev/drm2/drmP.h> 31 #include <dev/drm2/drm.h> 32 33 #include <sys/sysctl.h> 34 35 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 36 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 37 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 38 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 39 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS; 40 41 struct drm_sysctl_list { 42 const char *name; 43 int (*f) DRM_SYSCTL_HANDLER_ARGS; 44 } drm_sysctl_list[] = { 45 {"name", drm_name_info}, 46 {"vm", drm_vm_info}, 47 {"clients", drm_clients_info}, 48 {"bufs", drm_bufs_info}, 49 {"vblank", drm_vblank_info}, 50 }; 51 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0])) 52 53 struct drm_sysctl_info { 54 struct sysctl_ctx_list ctx; 55 char name[2]; 56 }; 57 58 int drm_sysctl_init(struct drm_device *dev) 59 { 60 struct drm_sysctl_info *info; 61 struct sysctl_oid *oid; 62 struct sysctl_oid *top, *drioid; 63 int i; 64 65 info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 66 dev->sysctl = info; 67 68 /* Add the sysctl node for DRI if it doesn't already exist */ 69 drioid = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(&sysctl___hw), OID_AUTO, 70 "dri", CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, "DRI Graphics"); 71 if (!drioid) { 72 free(dev->sysctl, DRM_MEM_DRIVER); 73 dev->sysctl = NULL; 74 return (-ENOMEM); 75 } 76 77 /* Find the next free slot under hw.dri */ 78 i = 0; 79 SYSCTL_FOREACH(oid, SYSCTL_CHILDREN(drioid)) { 80 if (i <= oid->oid_arg2) 81 i = oid->oid_arg2 + 1; 82 } 83 if (i > 9) { 84 drm_sysctl_cleanup(dev); 85 return (-ENOSPC); 86 } 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 | CTLFLAG_MPSAFE, NULL, NULL); 94 if (!top) { 95 drm_sysctl_cleanup(dev); 96 return (-ENOMEM); 97 } 98 99 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 100 oid = SYSCTL_ADD_OID(&info->ctx, SYSCTL_CHILDREN(top), 101 OID_AUTO, drm_sysctl_list[i].name, 102 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT, 103 dev, 0, drm_sysctl_list[i].f, "A", NULL); 104 if (!oid) { 105 drm_sysctl_cleanup(dev); 106 return (-ENOMEM); 107 } 108 } 109 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 110 CTLFLAG_RW, &drm_debug, sizeof(drm_debug), 111 "Enable debugging output"); 112 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 113 CTLFLAG_RW, &drm_notyet, sizeof(drm_debug), 114 "Enable notyet reminders"); 115 116 if (dev->driver->sysctl_init != NULL) 117 dev->driver->sysctl_init(dev, &info->ctx, top); 118 119 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 120 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 121 sizeof(drm_vblank_offdelay), 122 ""); 123 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 124 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 125 sizeof(drm_timestamp_precision), 126 ""); 127 128 return (0); 129 } 130 131 int drm_sysctl_cleanup(struct drm_device *dev) 132 { 133 int error; 134 135 if (dev->sysctl == NULL) 136 return (0); 137 138 error = sysctl_ctx_free(&dev->sysctl->ctx); 139 free(dev->sysctl, DRM_MEM_DRIVER); 140 dev->sysctl = NULL; 141 if (dev->driver->sysctl_cleanup != NULL) 142 dev->driver->sysctl_cleanup(dev); 143 144 return (-error); 145 } 146 147 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 148 do { \ 149 snprintf(buf, sizeof(buf), fmt, ##arg); \ 150 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 151 if (retcode) \ 152 goto done; \ 153 } while (0) 154 155 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 156 { 157 struct drm_device *dev = arg1; 158 struct drm_minor *minor; 159 struct drm_master *master; 160 char buf[128]; 161 int retcode; 162 int hasunique = 0; 163 164 /* FIXME: This still uses primary minor. */ 165 minor = dev->primary; 166 DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name, 167 (uintmax_t)dev2udev(minor->device)); 168 169 DRM_LOCK(dev); 170 master = minor->master; 171 if (master != NULL && master->unique) { 172 snprintf(buf, sizeof(buf), " %s", master->unique); 173 hasunique = 1; 174 } 175 DRM_UNLOCK(dev); 176 177 if (hasunique) 178 SYSCTL_OUT(req, buf, strlen(buf)); 179 180 SYSCTL_OUT(req, "", 1); 181 182 done: 183 return retcode; 184 } 185 186 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 187 { 188 struct drm_device *dev = arg1; 189 struct drm_map_list *entry; 190 struct drm_local_map *map, *tempmaps; 191 const char *types[] = { 192 [_DRM_FRAME_BUFFER] = "FB", 193 [_DRM_REGISTERS] = "REG", 194 [_DRM_SHM] = "SHM", 195 [_DRM_AGP] = "AGP", 196 [_DRM_SCATTER_GATHER] = "SG", 197 [_DRM_CONSISTENT] = "CONS", 198 [_DRM_GEM] = "GEM" 199 }; 200 const char *type, *yesno; 201 int i, mapcount; 202 char buf[128]; 203 int retcode; 204 205 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 206 * temporary copy of all the map entries and then SYSCTL_OUT that. 207 */ 208 DRM_LOCK(dev); 209 210 mapcount = 0; 211 list_for_each_entry(entry, &dev->maplist, head) { 212 if (entry->map != NULL) 213 mapcount++; 214 } 215 216 tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER, 217 M_NOWAIT); 218 if (tempmaps == NULL) { 219 DRM_UNLOCK(dev); 220 return ENOMEM; 221 } 222 223 i = 0; 224 list_for_each_entry(entry, &dev->maplist, head) { 225 if (entry->map != NULL) 226 tempmaps[i++] = *entry->map; 227 } 228 229 DRM_UNLOCK(dev); 230 231 DRM_SYSCTL_PRINT("\nslot offset size " 232 "type flags address mtrr\n"); 233 234 for (i = 0; i < mapcount; i++) { 235 map = &tempmaps[i]; 236 237 switch(map->type) { 238 default: 239 type = "??"; 240 break; 241 case _DRM_FRAME_BUFFER: 242 case _DRM_REGISTERS: 243 case _DRM_SHM: 244 case _DRM_AGP: 245 case _DRM_SCATTER_GATHER: 246 case _DRM_CONSISTENT: 247 case _DRM_GEM: 248 type = types[map->type]; 249 break; 250 } 251 252 if (map->mtrr < 0) 253 yesno = "no"; 254 else 255 yesno = "yes"; 256 257 DRM_SYSCTL_PRINT( 258 "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", 259 i, (unsigned long long)map->offset, map->size, type, 260 map->flags, (unsigned long)map->handle, yesno); 261 } 262 SYSCTL_OUT(req, "", 1); 263 264 done: 265 free(tempmaps, DRM_MEM_DRIVER); 266 return retcode; 267 } 268 269 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 270 { 271 struct drm_device *dev = arg1; 272 struct drm_device_dma *dma = dev->dma; 273 struct drm_device_dma tempdma; 274 int *templists; 275 int i; 276 char buf[128]; 277 int retcode; 278 279 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 280 * copy of the whole structure and the relevant data from buflist. 281 */ 282 DRM_LOCK(dev); 283 if (dma == NULL) { 284 DRM_UNLOCK(dev); 285 return 0; 286 } 287 DRM_SPINLOCK(&dev->dma_lock); 288 tempdma = *dma; 289 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 290 M_NOWAIT); 291 for (i = 0; i < dma->buf_count; i++) 292 templists[i] = dma->buflist[i]->list; 293 dma = &tempdma; 294 DRM_SPINUNLOCK(&dev->dma_lock); 295 DRM_UNLOCK(dev); 296 297 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 298 for (i = 0; i <= DRM_MAX_ORDER; i++) { 299 if (dma->bufs[i].buf_count) 300 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 301 i, 302 dma->bufs[i].buf_size, 303 dma->bufs[i].buf_count, 304 atomic_read(&dma->bufs[i] 305 .freelist.count), 306 dma->bufs[i].seg_count, 307 dma->bufs[i].seg_count 308 *(1 << dma->bufs[i].page_order), 309 (dma->bufs[i].seg_count 310 * (1 << dma->bufs[i].page_order)) 311 * (int)PAGE_SIZE / 1024); 312 } 313 DRM_SYSCTL_PRINT("\n"); 314 for (i = 0; i < dma->buf_count; i++) { 315 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 316 DRM_SYSCTL_PRINT(" %d", templists[i]); 317 } 318 DRM_SYSCTL_PRINT("\n"); 319 320 SYSCTL_OUT(req, "", 1); 321 done: 322 free(templists, DRM_MEM_DRIVER); 323 return retcode; 324 } 325 326 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 327 { 328 struct drm_device *dev = arg1; 329 struct drm_file *priv, *tempprivs; 330 char buf[128]; 331 int retcode; 332 int privcount, i; 333 334 DRM_LOCK(dev); 335 336 privcount = 0; 337 list_for_each_entry(priv, &dev->filelist, lhead) 338 privcount++; 339 340 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 341 M_NOWAIT); 342 if (tempprivs == NULL) { 343 DRM_UNLOCK(dev); 344 return ENOMEM; 345 } 346 i = 0; 347 list_for_each_entry(priv, &dev->filelist, lhead) 348 tempprivs[i++] = *priv; 349 350 DRM_UNLOCK(dev); 351 352 DRM_SYSCTL_PRINT( 353 "\na dev pid uid magic ioctls\n"); 354 for (i = 0; i < privcount; i++) { 355 priv = &tempprivs[i]; 356 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 357 priv->authenticated ? 'y' : 'n', 358 devtoname(priv->minor->device), 359 priv->pid, 360 priv->uid, 361 priv->magic, 362 priv->ioctl_count); 363 } 364 365 SYSCTL_OUT(req, "", 1); 366 done: 367 free(tempprivs, DRM_MEM_DRIVER); 368 return retcode; 369 } 370 371 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 372 { 373 struct drm_device *dev = arg1; 374 char buf[128]; 375 int retcode; 376 int i; 377 378 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 379 DRM_LOCK(dev); 380 if (dev->_vblank_count == NULL) 381 goto done; 382 for (i = 0 ; i < dev->num_crtcs ; i++) { 383 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 384 i, dev->vblank_refcount[i], 385 dev->_vblank_count[i], 386 dev->last_vblank[i], 387 dev->vblank_enabled[i], 388 dev->vblank_inmodeset[i]); 389 } 390 done: 391 DRM_UNLOCK(dev); 392 393 SYSCTL_OUT(req, "", -1); 394 return retcode; 395 } 396