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 return 1; 75 76 /* Find the next free slot under hw.dri */ 77 i = 0; 78 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 79 if (i <= oid->oid_arg2) 80 i = oid->oid_arg2 + 1; 81 } 82 if (i > 9) 83 return (1); 84 85 dev->sysctl_node_idx = i; 86 /* Add the hw.dri.x for our device */ 87 info->name[0] = '0' + i; 88 info->name[1] = 0; 89 top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid), 90 OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 91 if (!top) 92 return 1; 93 94 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 95 oid = SYSCTL_ADD_OID(&info->ctx, 96 SYSCTL_CHILDREN(top), 97 OID_AUTO, 98 drm_sysctl_list[i].name, 99 CTLTYPE_STRING | CTLFLAG_RD, 100 dev, 101 0, 102 drm_sysctl_list[i].f, 103 "A", 104 NULL); 105 if (!oid) 106 return 1; 107 } 108 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 109 CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag), 110 "Enable debugging output"); 111 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 112 CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug_flag), 113 "Enable notyet reminders"); 114 115 if (dev->driver->sysctl_init != NULL) 116 dev->driver->sysctl_init(dev, &info->ctx, top); 117 118 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 119 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 120 sizeof(drm_vblank_offdelay), 121 ""); 122 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 123 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 124 sizeof(drm_timestamp_precision), 125 ""); 126 127 return (0); 128 } 129 130 int drm_sysctl_cleanup(struct drm_device *dev) 131 { 132 int error; 133 134 error = sysctl_ctx_free(&dev->sysctl->ctx); 135 free(dev->sysctl, DRM_MEM_DRIVER); 136 dev->sysctl = NULL; 137 if (dev->driver->sysctl_cleanup != NULL) 138 dev->driver->sysctl_cleanup(dev); 139 140 return (error); 141 } 142 143 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 144 do { \ 145 snprintf(buf, sizeof(buf), fmt, ##arg); \ 146 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 147 if (retcode) \ 148 goto done; \ 149 } while (0) 150 151 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 152 { 153 struct drm_device *dev = arg1; 154 char buf[128]; 155 int retcode; 156 int hasunique = 0; 157 158 DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name, 159 (uintmax_t)dev2udev(dev->devnode)); 160 161 DRM_LOCK(dev); 162 if (dev->unique) { 163 snprintf(buf, sizeof(buf), " %s", dev->unique); 164 hasunique = 1; 165 } 166 DRM_UNLOCK(dev); 167 168 if (hasunique) 169 SYSCTL_OUT(req, buf, strlen(buf)); 170 171 SYSCTL_OUT(req, "", 1); 172 173 done: 174 return retcode; 175 } 176 177 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 178 { 179 struct drm_device *dev = arg1; 180 drm_local_map_t *map, *tempmaps; 181 const char *types[] = { 182 [_DRM_FRAME_BUFFER] = "FB", 183 [_DRM_REGISTERS] = "REG", 184 [_DRM_SHM] = "SHM", 185 [_DRM_AGP] = "AGP", 186 [_DRM_SCATTER_GATHER] = "SG", 187 [_DRM_CONSISTENT] = "CONS", 188 [_DRM_GEM] = "GEM" 189 }; 190 const char *type, *yesno; 191 int i, mapcount; 192 char buf[128]; 193 int retcode; 194 195 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 196 * temporary copy of all the map entries and then SYSCTL_OUT that. 197 */ 198 DRM_LOCK(dev); 199 200 mapcount = 0; 201 TAILQ_FOREACH(map, &dev->maplist, link) 202 mapcount++; 203 204 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 205 M_NOWAIT); 206 if (tempmaps == NULL) { 207 DRM_UNLOCK(dev); 208 return ENOMEM; 209 } 210 211 i = 0; 212 TAILQ_FOREACH(map, &dev->maplist, link) 213 tempmaps[i++] = *map; 214 215 DRM_UNLOCK(dev); 216 217 DRM_SYSCTL_PRINT("\nslot offset size " 218 "type flags address handle mtrr\n"); 219 220 for (i = 0; i < mapcount; i++) { 221 map = &tempmaps[i]; 222 223 switch(map->type) { 224 default: 225 type = "??"; 226 break; 227 case _DRM_FRAME_BUFFER: 228 case _DRM_REGISTERS: 229 case _DRM_SHM: 230 case _DRM_AGP: 231 case _DRM_SCATTER_GATHER: 232 case _DRM_CONSISTENT: 233 case _DRM_GEM: 234 type = types[map->type]; 235 break; 236 } 237 238 if (!map->mtrr) 239 yesno = "no"; 240 else 241 yesno = "yes"; 242 243 DRM_SYSCTL_PRINT( 244 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %6d %s\n", 245 i, map->offset, map->size, type, map->flags, 246 (unsigned long)map->virtual, 247 (unsigned int)((unsigned long)map->handle >> 248 DRM_MAP_HANDLE_SHIFT), yesno); 249 } 250 SYSCTL_OUT(req, "", 1); 251 252 done: 253 free(tempmaps, DRM_MEM_DRIVER); 254 return retcode; 255 } 256 257 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 258 { 259 struct drm_device *dev = arg1; 260 drm_device_dma_t *dma = dev->dma; 261 drm_device_dma_t tempdma; 262 int *templists; 263 int i; 264 char buf[128]; 265 int retcode; 266 267 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 268 * copy of the whole structure and the relevant data from buflist. 269 */ 270 DRM_LOCK(dev); 271 if (dma == NULL) { 272 DRM_UNLOCK(dev); 273 return 0; 274 } 275 DRM_SPINLOCK(&dev->dma_lock); 276 tempdma = *dma; 277 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 278 M_NOWAIT); 279 for (i = 0; i < dma->buf_count; i++) 280 templists[i] = dma->buflist[i]->list; 281 dma = &tempdma; 282 DRM_SPINUNLOCK(&dev->dma_lock); 283 DRM_UNLOCK(dev); 284 285 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 286 for (i = 0; i <= DRM_MAX_ORDER; i++) { 287 if (dma->bufs[i].buf_count) 288 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 289 i, 290 dma->bufs[i].buf_size, 291 dma->bufs[i].buf_count, 292 atomic_read(&dma->bufs[i] 293 .freelist.count), 294 dma->bufs[i].seg_count, 295 dma->bufs[i].seg_count 296 *(1 << dma->bufs[i].page_order), 297 (dma->bufs[i].seg_count 298 * (1 << dma->bufs[i].page_order)) 299 * (int)PAGE_SIZE / 1024); 300 } 301 DRM_SYSCTL_PRINT("\n"); 302 for (i = 0; i < dma->buf_count; i++) { 303 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 304 DRM_SYSCTL_PRINT(" %d", templists[i]); 305 } 306 DRM_SYSCTL_PRINT("\n"); 307 308 SYSCTL_OUT(req, "", 1); 309 done: 310 free(templists, DRM_MEM_DRIVER); 311 return retcode; 312 } 313 314 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 315 { 316 struct drm_device *dev = arg1; 317 struct drm_file *priv, *tempprivs; 318 char buf[128]; 319 int retcode; 320 int privcount, i; 321 322 DRM_LOCK(dev); 323 324 privcount = 0; 325 TAILQ_FOREACH(priv, &dev->files, link) 326 privcount++; 327 328 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 329 M_NOWAIT); 330 if (tempprivs == NULL) { 331 DRM_UNLOCK(dev); 332 return ENOMEM; 333 } 334 i = 0; 335 TAILQ_FOREACH(priv, &dev->files, link) 336 tempprivs[i++] = *priv; 337 338 DRM_UNLOCK(dev); 339 340 DRM_SYSCTL_PRINT( 341 "\na dev pid uid magic ioctls\n"); 342 for (i = 0; i < privcount; i++) { 343 priv = &tempprivs[i]; 344 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 345 priv->authenticated ? 'y' : 'n', 346 devtoname(priv->dev->devnode), 347 priv->pid, 348 priv->uid, 349 priv->magic, 350 priv->ioctl_count); 351 } 352 353 SYSCTL_OUT(req, "", 1); 354 done: 355 free(tempprivs, DRM_MEM_DRIVER); 356 return retcode; 357 } 358 359 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 360 { 361 struct drm_device *dev = arg1; 362 char buf[128]; 363 int retcode; 364 int i; 365 366 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 367 DRM_LOCK(dev); 368 if (dev->_vblank_count == NULL) 369 goto done; 370 for (i = 0 ; i < dev->num_crtcs ; i++) { 371 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 372 i, dev->vblank_refcount[i], 373 dev->_vblank_count[i], 374 dev->last_vblank[i], 375 dev->vblank_enabled[i], 376 dev->vblank_inmodeset[i]); 377 } 378 done: 379 DRM_UNLOCK(dev); 380 381 SYSCTL_OUT(req, "", -1); 382 return retcode; 383 } 384