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 /** @file drm_sysctl.c 25 * Implementation of various sysctls for controlling DRM behavior and reporting 26 * debug information. 27 */ 28 29 #include "drmP.h" 30 #include "drm.h" 31 32 #include <sys/sysctl.h> 33 34 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 35 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 36 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 37 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 38 39 struct drm_sysctl_list { 40 const char *name; 41 int (*f) DRM_SYSCTL_HANDLER_ARGS; 42 } drm_sysctl_list[] = { 43 {"name", drm_name_info}, 44 {"vm", drm_vm_info}, 45 {"clients", drm_clients_info}, 46 {"bufs", drm_bufs_info}, 47 }; 48 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0])) 49 50 struct drm_sysctl_info { 51 #if defined(__FreeBSD__) 52 struct sysctl_ctx_list ctx; 53 char name[2]; 54 #elif defined(__NetBSD__) 55 const struct sysctlnode *dri, *dri_card, *dri_debug; 56 const struct sysctlnode *dri_rest[DRM_SYSCTL_ENTRIES]; 57 char name[7]; 58 struct sysctllog *log; 59 #endif 60 }; 61 62 int drm_sysctl_init(struct drm_device *dev) 63 { 64 struct drm_sysctl_info *info; 65 #if defined(__FreeBSD__) 66 struct sysctl_oid *oid; 67 struct sysctl_oid *top, *drioid; 68 #endif 69 int i; 70 71 info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 72 if ( !info ) 73 return 1; 74 dev->sysctl = info; 75 76 #if defined(__FreeBSD__) 77 /* Add the sysctl node for DRI if it doesn't already exist */ 78 drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 79 if (!drioid) 80 return 1; 81 82 /* Find the next free slot under hw.dri */ 83 i = 0; 84 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 85 if (i <= oid->oid_arg2) 86 i = oid->oid_arg2 + 1; 87 } 88 if (i>9) 89 return 1; 90 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), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 95 if (!top) 96 return 1; 97 98 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 99 oid = SYSCTL_ADD_OID(&info->ctx, 100 SYSCTL_CHILDREN(top), 101 OID_AUTO, 102 drm_sysctl_list[i].name, 103 CTLTYPE_INT | CTLFLAG_RD, 104 dev, 105 0, 106 drm_sysctl_list[i].f, 107 "A", 108 NULL); 109 if (!oid) 110 return 1; 111 } 112 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug", 113 CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag), 114 "Enable debugging output"); 115 #elif defined(__NetBSD__) 116 sysctl_createv(&info->log, 0, NULL, &info->dri, 117 CTLFLAG_READWRITE, CTLTYPE_NODE, 118 "dri", SYSCTL_DESCR("DRI Graphics"), NULL, 0, NULL, 0, 119 CTL_HW, CTL_CREATE); 120 snprintf(info->name, 7, "card%d", minor(dev->kdev)); 121 sysctl_createv(&info->log, 0, NULL, &info->dri_card, 122 CTLFLAG_READWRITE, CTLTYPE_NODE, 123 info->name, NULL, NULL, 0, NULL, 0, 124 CTL_HW, info->dri->sysctl_num, CTL_CREATE); 125 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) 126 sysctl_createv(&info->log, 0, NULL, &(info->dri_rest[i]), 127 CTLFLAG_READONLY, CTLTYPE_STRING, 128 drm_sysctl_list[i].name, NULL, 129 drm_sysctl_list[i].f, 0, (void *)dev, 130 sizeof(struct drm_device*), 131 CTL_HW, 132 info->dri->sysctl_num, 133 info->dri_card->sysctl_num, CTL_CREATE); 134 sysctl_createv(&info->log, 0, NULL, &info->dri_debug, 135 CTLFLAG_READWRITE, CTLTYPE_INT, 136 "debug", SYSCTL_DESCR("Enable debugging output"), 137 NULL, 0, 138 &drm_debug_flag, sizeof(drm_debug_flag), 139 CTL_HW, info->dri->sysctl_num, CTL_CREATE); 140 #endif 141 142 return 0; 143 } 144 145 int drm_sysctl_cleanup(struct drm_device *dev) 146 { 147 #if defined(__FreeBSD__) 148 int error; 149 error = sysctl_ctx_free( &dev->sysctl->ctx ); 150 151 free(dev->sysctl, DRM_MEM_DRIVER); 152 dev->sysctl = NULL; 153 154 return error; 155 #elif defined(__NetBSD__) 156 sysctl_teardown(&dev->sysctl->log); 157 158 free(dev->sysctl, DRM_MEM_DRIVER); 159 dev->sysctl = NULL; 160 161 return 0; 162 #endif 163 } 164 165 #ifdef __NetBSD__ 166 #define SYSCTL_OUT(x, y, z) \ 167 drm_sysctl_out(oldp, oldlenp, &len, y, z, &error, &retcode); 168 169 static int 170 drm_sysctl_out(void *oldp, size_t *oldlenp, size_t *lenp, 171 const char *buf, size_t buflen, 172 int *errorp, int *retcodep) 173 { 174 size_t copylen; 175 int error = 0; 176 177 /* 178 * If there's room left in the user buffer, 179 * copy out as much data as there is room for. 180 */ 181 182 if (*lenp < *oldlenp) { 183 copylen = MIN(buflen, *oldlenp - *lenp); 184 error = copyout(buf, (char *)oldp + *lenp, copylen); 185 if (error) { 186 *errorp = error; 187 } 188 } else { 189 copylen = 0; 190 } 191 *lenp += buflen; 192 193 /* 194 * If we didn't copy everything, remember that we should 195 * return ENOMEM at the end. 196 */ 197 198 if (copylen < buflen && *errorp == 0) { 199 *errorp = ENOMEM; 200 } 201 202 /* 203 * If this is the final call (indicated by the buffer 204 * being the string terminator byte), return the 205 * total space required in *oldlenp and return 206 * the saved error in *retcodep. 207 */ 208 209 if (buflen == 1 && *buf == 0) { 210 *oldlenp = *lenp; 211 *retcodep = *errorp; 212 } 213 return error; 214 } 215 216 #endif 217 218 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 219 do { \ 220 snprintf(buf, sizeof(buf), fmt, ##arg); \ 221 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 222 if (retcode) \ 223 goto done; \ 224 } while (0) 225 226 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 227 { 228 #if defined(__FreeBSD__) 229 struct drm_device *dev = arg1; 230 #elif defined(__NetBSD__) 231 struct drm_device *dev = rnode->sysctl_data; 232 size_t len = 0; 233 int error = 0; 234 #endif 235 char buf[128]; 236 int retcode; 237 int hasunique = 0; 238 239 #if defined(__FreeBSD__) 240 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 241 #elif defined(__NetBSD__) 242 if (oldp == NULL) 243 return EINVAL; 244 *((char*)oldp) = '\0'; 245 246 DRM_SYSCTL_PRINT("%s", dev->driver->name); 247 #endif 248 249 DRM_LOCK(); 250 if (dev->unique) { 251 snprintf(buf, sizeof(buf), " %s", dev->unique); 252 hasunique = 1; 253 } 254 DRM_UNLOCK(); 255 256 if (hasunique) 257 SYSCTL_OUT(req, buf, strlen(buf)); 258 259 SYSCTL_OUT(req, "", 1); 260 261 done: 262 return retcode; 263 } 264 265 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 266 { 267 #if defined(__FreeBSD__) 268 struct drm_device *dev = arg1; 269 #elif defined(__NetBSD__) 270 struct drm_device *dev = rnode->sysctl_data; 271 size_t len = 0; 272 int error = 0; 273 #endif 274 drm_local_map_t *map, *tempmaps; 275 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "GEM", "TTM" }; 276 const char *type, *yesno; 277 int i, mapcount; 278 char buf[128]; 279 int retcode; 280 281 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 282 * temporary copy of all the map entries and then SYSCTL_OUT that. 283 */ 284 DRM_LOCK(); 285 286 mapcount = 0; 287 TAILQ_FOREACH(map, &dev->maplist, link) 288 mapcount++; 289 290 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 291 M_WAITOK); 292 293 i = 0; 294 TAILQ_FOREACH(map, &dev->maplist, link) 295 tempmaps[i++] = *map; 296 297 DRM_UNLOCK(); 298 299 DRM_SYSCTL_PRINT("\nslot offset size " 300 "type flags address mtrr\n"); 301 302 for (i = 0; i < mapcount; i++) { 303 map = &tempmaps[i]; 304 305 if (map->type > 4) 306 type = "??"; 307 else 308 type = types[map->type]; 309 310 if (!map->mtrr) 311 yesno = "no"; 312 else 313 yesno = "yes"; 314 315 DRM_SYSCTL_PRINT( 316 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", i, 317 map->offset, map->size, type, map->flags, 318 (unsigned long)map->handle, yesno); 319 } 320 SYSCTL_OUT(req, "", 1); 321 322 done: 323 free(tempmaps, DRM_MEM_DRIVER); 324 return retcode; 325 } 326 327 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 328 { 329 #if defined(__FreeBSD__) 330 struct drm_device *dev = arg1; 331 #elif defined(__NetBSD__) 332 struct drm_device *dev = rnode->sysctl_data; 333 size_t len = 0; 334 int error = 0; 335 #endif 336 drm_device_dma_t *dma = dev->dma; 337 drm_device_dma_t tempdma; 338 int *templists; 339 int i; 340 char buf[128]; 341 int retcode; 342 343 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 344 * copy of the whole structure and the relevant data from buflist. 345 */ 346 DRM_LOCK(); 347 if (dma == NULL) { 348 DRM_UNLOCK(); 349 return 0; 350 } 351 DRM_SPINLOCK(&dev->dma_lock); 352 tempdma = *dma; 353 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 354 M_WAITOK); 355 for (i = 0; i < dma->buf_count; i++) 356 templists[i] = dma->buflist[i]->list; 357 dma = &tempdma; 358 DRM_SPINUNLOCK(&dev->dma_lock); 359 DRM_UNLOCK(); 360 361 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 362 for (i = 0; i <= DRM_MAX_ORDER; i++) { 363 if (dma->bufs[i].buf_count) 364 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 365 i, 366 dma->bufs[i].buf_size, 367 dma->bufs[i].buf_count, 368 atomic_read(&dma->bufs[i] 369 .freelist.count), 370 dma->bufs[i].seg_count, 371 dma->bufs[i].seg_count 372 *(1 << dma->bufs[i].page_order), 373 (dma->bufs[i].seg_count 374 * (1 << dma->bufs[i].page_order)) 375 * PAGE_SIZE / 1024); 376 } 377 DRM_SYSCTL_PRINT("\n"); 378 for (i = 0; i < dma->buf_count; i++) { 379 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 380 DRM_SYSCTL_PRINT(" %d", templists[i]); 381 } 382 DRM_SYSCTL_PRINT("\n"); 383 384 SYSCTL_OUT(req, "", 1); 385 done: 386 free(templists, DRM_MEM_DRIVER); 387 return retcode; 388 } 389 390 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 391 { 392 #if defined(__FreeBSD__) 393 struct drm_device *dev = arg1; 394 #elif defined(__NetBSD__) 395 struct drm_device *dev = rnode->sysctl_data; 396 size_t len = 0; 397 int error = 0; 398 #endif 399 struct drm_file *priv, *tempprivs; 400 char buf[128]; 401 int retcode; 402 int privcount, i; 403 404 DRM_LOCK(); 405 406 privcount = 0; 407 TAILQ_FOREACH(priv, &dev->files, link) 408 privcount++; 409 410 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 411 M_WAITOK); 412 i = 0; 413 TAILQ_FOREACH(priv, &dev->files, link) 414 tempprivs[i++] = *priv; 415 416 DRM_UNLOCK(); 417 418 DRM_SYSCTL_PRINT("\na dev pid uid magic ioctls\n"); 419 for (i = 0; i < privcount; i++) { 420 priv = &tempprivs[i]; 421 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n", 422 priv->authenticated ? 'y' : 'n', 423 priv->minor, 424 priv->pid, 425 priv->uid, 426 priv->magic, 427 priv->ioctl_count); 428 } 429 430 SYSCTL_OUT(req, "", 1); 431 done: 432 free(tempprivs, DRM_MEM_DRIVER); 433 return retcode; 434 } 435
Indexes created Sat Sep 20 22:09:52 GMT 2025