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%x", dev->driver->name, dev2udev(dev->devnode)); 159 160 DRM_LOCK(dev); 161 if (dev->unique) { 162 snprintf(buf, sizeof(buf), " %s", dev->unique); 163 hasunique = 1; 164 } 165 DRM_UNLOCK(dev); 166 167 if (hasunique) 168 SYSCTL_OUT(req, buf, strlen(buf)); 169 170 SYSCTL_OUT(req, "", 1); 171 172 done: 173 return retcode; 174 } 175 176 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 177 { 178 struct drm_device *dev = arg1; 179 drm_local_map_t *map, *tempmaps; 180 const char *types[] = { 181 [_DRM_FRAME_BUFFER] = "FB", 182 [_DRM_REGISTERS] = "REG", 183 [_DRM_SHM] = "SHM", 184 [_DRM_AGP] = "AGP", 185 [_DRM_SCATTER_GATHER] = "SG", 186 [_DRM_CONSISTENT] = "CONS", 187 [_DRM_GEM] = "GEM" 188 }; 189 const char *type, *yesno; 190 int i, mapcount; 191 char buf[128]; 192 int retcode; 193 194 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 195 * temporary copy of all the map entries and then SYSCTL_OUT that. 196 */ 197 DRM_LOCK(dev); 198 199 mapcount = 0; 200 TAILQ_FOREACH(map, &dev->maplist, link) 201 mapcount++; 202 203 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 204 M_NOWAIT); 205 if (tempmaps == NULL) { 206 DRM_UNLOCK(dev); 207 return ENOMEM; 208 } 209 210 i = 0; 211 TAILQ_FOREACH(map, &dev->maplist, link) 212 tempmaps[i++] = *map; 213 214 DRM_UNLOCK(dev); 215 216 DRM_SYSCTL_PRINT("\nslot offset size " 217 "type flags address handle mtrr\n"); 218 219 for (i = 0; i < mapcount; i++) { 220 map = &tempmaps[i]; 221 222 switch(map->type) { 223 default: 224 type = "??"; 225 break; 226 case _DRM_FRAME_BUFFER: 227 case _DRM_REGISTERS: 228 case _DRM_SHM: 229 case _DRM_AGP: 230 case _DRM_SCATTER_GATHER: 231 case _DRM_CONSISTENT: 232 case _DRM_GEM: 233 type = types[map->type]; 234 break; 235 } 236 237 if (!map->mtrr) 238 yesno = "no"; 239 else 240 yesno = "yes"; 241 242 DRM_SYSCTL_PRINT( 243 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %6d %s\n", 244 i, map->offset, map->size, type, map->flags, 245 (unsigned long)map->virtual, 246 (unsigned int)((unsigned long)map->handle >> 247 DRM_MAP_HANDLE_SHIFT), yesno); 248 } 249 SYSCTL_OUT(req, "", 1); 250 251 done: 252 free(tempmaps, DRM_MEM_DRIVER); 253 return retcode; 254 } 255 256 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 257 { 258 struct drm_device *dev = arg1; 259 drm_device_dma_t *dma = dev->dma; 260 drm_device_dma_t tempdma; 261 int *templists; 262 int i; 263 char buf[128]; 264 int retcode; 265 266 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 267 * copy of the whole structure and the relevant data from buflist. 268 */ 269 DRM_LOCK(dev); 270 if (dma == NULL) { 271 DRM_UNLOCK(dev); 272 return 0; 273 } 274 DRM_SPINLOCK(&dev->dma_lock); 275 tempdma = *dma; 276 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 277 M_NOWAIT); 278 for (i = 0; i < dma->buf_count; i++) 279 templists[i] = dma->buflist[i]->list; 280 dma = &tempdma; 281 DRM_SPINUNLOCK(&dev->dma_lock); 282 DRM_UNLOCK(dev); 283 284 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 285 for (i = 0; i <= DRM_MAX_ORDER; i++) { 286 if (dma->bufs[i].buf_count) 287 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 288 i, 289 dma->bufs[i].buf_size, 290 dma->bufs[i].buf_count, 291 atomic_read(&dma->bufs[i] 292 .freelist.count), 293 dma->bufs[i].seg_count, 294 dma->bufs[i].seg_count 295 *(1 << dma->bufs[i].page_order), 296 (dma->bufs[i].seg_count 297 * (1 << dma->bufs[i].page_order)) 298 * (int)PAGE_SIZE / 1024); 299 } 300 DRM_SYSCTL_PRINT("\n"); 301 for (i = 0; i < dma->buf_count; i++) { 302 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 303 DRM_SYSCTL_PRINT(" %d", templists[i]); 304 } 305 DRM_SYSCTL_PRINT("\n"); 306 307 SYSCTL_OUT(req, "", 1); 308 done: 309 free(templists, DRM_MEM_DRIVER); 310 return retcode; 311 } 312 313 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 314 { 315 struct drm_device *dev = arg1; 316 struct drm_file *priv, *tempprivs; 317 char buf[128]; 318 int retcode; 319 int privcount, i; 320 321 DRM_LOCK(dev); 322 323 privcount = 0; 324 TAILQ_FOREACH(priv, &dev->files, link) 325 privcount++; 326 327 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 328 M_NOWAIT); 329 if (tempprivs == NULL) { 330 DRM_UNLOCK(dev); 331 return ENOMEM; 332 } 333 i = 0; 334 TAILQ_FOREACH(priv, &dev->files, link) 335 tempprivs[i++] = *priv; 336 337 DRM_UNLOCK(dev); 338 339 DRM_SYSCTL_PRINT( 340 "\na dev pid uid magic ioctls\n"); 341 for (i = 0; i < privcount; i++) { 342 priv = &tempprivs[i]; 343 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 344 priv->authenticated ? 'y' : 'n', 345 devtoname(priv->dev->devnode), 346 priv->pid, 347 priv->uid, 348 priv->magic, 349 priv->ioctl_count); 350 } 351 352 SYSCTL_OUT(req, "", 1); 353 done: 354 free(tempprivs, DRM_MEM_DRIVER); 355 return retcode; 356 } 357 358 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 359 { 360 struct drm_device *dev = arg1; 361 char buf[128]; 362 int retcode; 363 int i; 364 365 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 366 DRM_LOCK(dev); 367 if (dev->_vblank_count == NULL) 368 goto done; 369 for (i = 0 ; i < dev->num_crtcs ; i++) { 370 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 371 i, dev->vblank_refcount[i], 372 dev->_vblank_count[i], 373 dev->last_vblank[i], 374 dev->vblank_enabled[i], 375 dev->vblank_inmodeset[i]); 376 } 377 done: 378 DRM_UNLOCK(dev); 379 380 SYSCTL_OUT(req, "", -1); 381 return retcode; 382 } 383