drm_sysctl.c revision 282199
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: stable/10/sys/dev/drm2/drm_sysctl.c 282199 2015-04-28 19:35:05Z dumbbell $"); 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 37static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 38static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 39static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 40static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 41static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS; 42 43struct 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 55struct drm_sysctl_info { 56 struct sysctl_ctx_list ctx; 57 char name[2]; 58}; 59 60int 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__hw_children, 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 139int 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...) \ 156do { \ 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 163static 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%x", dev->driver->name, dev2udev(minor->device)); 175 176 DRM_LOCK(dev); 177 master = minor->master; 178 if (master != NULL && master->unique) { 179 snprintf(buf, sizeof(buf), " %s", master->unique); 180 hasunique = 1; 181 } 182 DRM_UNLOCK(dev); 183 184 if (hasunique) 185 SYSCTL_OUT(req, buf, strlen(buf)); 186 187 SYSCTL_OUT(req, "", 1); 188 189done: 190 return retcode; 191} 192 193static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 194{ 195 struct drm_device *dev = arg1; 196 struct drm_map_list *entry; 197 struct drm_local_map *map, *tempmaps; 198 const char *types[] = { 199 [_DRM_FRAME_BUFFER] = "FB", 200 [_DRM_REGISTERS] = "REG", 201 [_DRM_SHM] = "SHM", 202 [_DRM_AGP] = "AGP", 203 [_DRM_SCATTER_GATHER] = "SG", 204 [_DRM_CONSISTENT] = "CONS", 205 [_DRM_GEM] = "GEM" 206 }; 207 const char *type, *yesno; 208 int i, mapcount; 209 char buf[128]; 210 int retcode; 211 212 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 213 * temporary copy of all the map entries and then SYSCTL_OUT that. 214 */ 215 DRM_LOCK(dev); 216 217 mapcount = 0; 218 list_for_each_entry(entry, &dev->maplist, head) { 219 if (entry->map != NULL) 220 mapcount++; 221 } 222 223 tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER, 224 M_NOWAIT); 225 if (tempmaps == NULL) { 226 DRM_UNLOCK(dev); 227 return ENOMEM; 228 } 229 230 i = 0; 231 list_for_each_entry(entry, &dev->maplist, head) { 232 if (entry->map != NULL) 233 tempmaps[i++] = *entry->map; 234 } 235 236 DRM_UNLOCK(dev); 237 238 DRM_SYSCTL_PRINT("\nslot offset size " 239 "type flags address mtrr\n"); 240 241 for (i = 0; i < mapcount; i++) { 242 map = &tempmaps[i]; 243 244 switch(map->type) { 245 default: 246 type = "??"; 247 break; 248 case _DRM_FRAME_BUFFER: 249 case _DRM_REGISTERS: 250 case _DRM_SHM: 251 case _DRM_AGP: 252 case _DRM_SCATTER_GATHER: 253 case _DRM_CONSISTENT: 254 case _DRM_GEM: 255 type = types[map->type]; 256 break; 257 } 258 259 if (map->mtrr < 0) 260 yesno = "no"; 261 else 262 yesno = "yes"; 263 264 DRM_SYSCTL_PRINT( 265 "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", 266 i, (unsigned long long)map->offset, map->size, type, 267 map->flags, (unsigned long)map->handle, yesno); 268 } 269 SYSCTL_OUT(req, "", 1); 270 271done: 272 free(tempmaps, DRM_MEM_DRIVER); 273 return retcode; 274} 275 276static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 277{ 278 struct drm_device *dev = arg1; 279 struct drm_device_dma *dma = dev->dma; 280 struct drm_device_dma tempdma; 281 int *templists; 282 int i; 283 char buf[128]; 284 int retcode; 285 286 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 287 * copy of the whole structure and the relevant data from buflist. 288 */ 289 DRM_LOCK(dev); 290 if (dma == NULL) { 291 DRM_UNLOCK(dev); 292 return 0; 293 } 294 DRM_SPINLOCK(&dev->dma_lock); 295 tempdma = *dma; 296 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 297 M_NOWAIT); 298 for (i = 0; i < dma->buf_count; i++) 299 templists[i] = dma->buflist[i]->list; 300 dma = &tempdma; 301 DRM_SPINUNLOCK(&dev->dma_lock); 302 DRM_UNLOCK(dev); 303 304 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 305 for (i = 0; i <= DRM_MAX_ORDER; i++) { 306 if (dma->bufs[i].buf_count) 307 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 308 i, 309 dma->bufs[i].buf_size, 310 dma->bufs[i].buf_count, 311 atomic_read(&dma->bufs[i] 312 .freelist.count), 313 dma->bufs[i].seg_count, 314 dma->bufs[i].seg_count 315 *(1 << dma->bufs[i].page_order), 316 (dma->bufs[i].seg_count 317 * (1 << dma->bufs[i].page_order)) 318 * (int)PAGE_SIZE / 1024); 319 } 320 DRM_SYSCTL_PRINT("\n"); 321 for (i = 0; i < dma->buf_count; i++) { 322 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 323 DRM_SYSCTL_PRINT(" %d", templists[i]); 324 } 325 DRM_SYSCTL_PRINT("\n"); 326 327 SYSCTL_OUT(req, "", 1); 328done: 329 free(templists, DRM_MEM_DRIVER); 330 return retcode; 331} 332 333static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 334{ 335 struct drm_device *dev = arg1; 336 struct drm_file *priv, *tempprivs; 337 char buf[128]; 338 int retcode; 339 int privcount, i; 340 341 DRM_LOCK(dev); 342 343 privcount = 0; 344 list_for_each_entry(priv, &dev->filelist, lhead) 345 privcount++; 346 347 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 348 M_NOWAIT); 349 if (tempprivs == NULL) { 350 DRM_UNLOCK(dev); 351 return ENOMEM; 352 } 353 i = 0; 354 list_for_each_entry(priv, &dev->filelist, lhead) 355 tempprivs[i++] = *priv; 356 357 DRM_UNLOCK(dev); 358 359 DRM_SYSCTL_PRINT( 360 "\na dev pid uid magic ioctls\n"); 361 for (i = 0; i < privcount; i++) { 362 priv = &tempprivs[i]; 363 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 364 priv->authenticated ? 'y' : 'n', 365 devtoname(priv->minor->device), 366 priv->pid, 367 priv->uid, 368 priv->magic, 369 priv->ioctl_count); 370 } 371 372 SYSCTL_OUT(req, "", 1); 373done: 374 free(tempprivs, DRM_MEM_DRIVER); 375 return retcode; 376} 377 378static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 379{ 380 struct drm_device *dev = arg1; 381 char buf[128]; 382 int retcode; 383 int i; 384 385 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 386 DRM_LOCK(dev); 387 if (dev->_vblank_count == NULL) 388 goto done; 389 for (i = 0 ; i < dev->num_crtcs ; i++) { 390 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 391 i, dev->vblank_refcount[i], 392 dev->_vblank_count[i], 393 dev->last_vblank[i], 394 dev->vblank_enabled[i], 395 dev->vblank_inmodeset[i]); 396 } 397done: 398 DRM_UNLOCK(dev); 399 400 SYSCTL_OUT(req, "", -1); 401 return retcode; 402} 403