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, 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 (len+=z,(len<*oldlenp)?(strcat((char*)oldp, y),0):EOVERFLOW) 168 #endif 169 170 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 171 do { \ 172 snprintf(buf, sizeof(buf), fmt, ##arg); \ 173 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 174 if (retcode) \ 175 goto done; \ 176 } while (0) 177 178 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 179 { 180 #if defined(__FreeBSD__) 181 struct drm_device *dev = arg1; 182 #elif defined(__NetBSD__) 183 struct drm_device *dev = rnode->sysctl_data; 184 int len = 0; 185 #endif 186 char buf[128]; 187 int retcode; 188 int hasunique = 0; 189 190 #if defined(__FreeBSD__) 191 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 192 #elif defined(__NetBSD__) 193 if (oldp == NULL) 194 return EINVAL; 195 *((char*)oldp) = '\0'; 196 197 DRM_SYSCTL_PRINT("%s", dev->driver->name); 198 #endif 199 200 DRM_LOCK(); 201 if (dev->unique) { 202 snprintf(buf, sizeof(buf), " %s", dev->unique); 203 hasunique = 1; 204 } 205 DRM_UNLOCK(); 206 207 if (hasunique) 208 SYSCTL_OUT(req, buf, strlen(buf)); 209 210 SYSCTL_OUT(req, "", 1); 211 212 done: 213 return retcode; 214 } 215 216 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 217 { 218 #if defined(__FreeBSD__) 219 struct drm_device *dev = arg1; 220 #elif defined(__NetBSD__) 221 struct drm_device *dev = rnode->sysctl_data; 222 int len = 0; 223 #endif 224 drm_local_map_t *map, *tempmaps; 225 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "GEM", "TTM" }; 226 const char *type, *yesno; 227 int i, mapcount; 228 char buf[128]; 229 int retcode; 230 231 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 232 * temporary copy of all the map entries and then SYSCTL_OUT that. 233 */ 234 DRM_LOCK(); 235 236 mapcount = 0; 237 TAILQ_FOREACH(map, &dev->maplist, link) 238 mapcount++; 239 240 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 241 M_NOWAIT); 242 if (tempmaps == NULL) { 243 DRM_UNLOCK(); 244 return ENOMEM; 245 } 246 247 i = 0; 248 TAILQ_FOREACH(map, &dev->maplist, link) 249 tempmaps[i++] = *map; 250 251 DRM_UNLOCK(); 252 253 DRM_SYSCTL_PRINT("\nslot offset size " 254 "type flags address mtrr\n"); 255 256 for (i = 0; i < mapcount; i++) { 257 map = &tempmaps[i]; 258 259 if (map->type > 4) 260 type = "??"; 261 else 262 type = types[map->type]; 263 264 if (!map->mtrr) 265 yesno = "no"; 266 else 267 yesno = "yes"; 268 269 DRM_SYSCTL_PRINT( 270 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", i, 271 map->offset, map->size, type, map->flags, 272 (unsigned long)map->handle, yesno); 273 } 274 SYSCTL_OUT(req, "", 1); 275 276 done: 277 free(tempmaps, DRM_MEM_DRIVER); 278 return retcode; 279 } 280 281 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 282 { 283 #if defined(__FreeBSD__) 284 struct drm_device *dev = arg1; 285 #elif defined(__NetBSD__) 286 struct drm_device *dev = rnode->sysctl_data; 287 int len = 0; 288 #endif 289 drm_device_dma_t *dma = dev->dma; 290 drm_device_dma_t tempdma; 291 int *templists; 292 int i; 293 char buf[128]; 294 int retcode; 295 296 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 297 * copy of the whole structure and the relevant data from buflist. 298 */ 299 DRM_LOCK(); 300 if (dma == NULL) { 301 DRM_UNLOCK(); 302 return 0; 303 } 304 DRM_SPINLOCK(&dev->dma_lock); 305 tempdma = *dma; 306 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 307 M_NOWAIT); 308 for (i = 0; i < dma->buf_count; i++) 309 templists[i] = dma->buflist[i]->list; 310 dma = &tempdma; 311 DRM_SPINUNLOCK(&dev->dma_lock); 312 DRM_UNLOCK(); 313 314 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 315 for (i = 0; i <= DRM_MAX_ORDER; i++) { 316 if (dma->bufs[i].buf_count) 317 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 318 i, 319 dma->bufs[i].buf_size, 320 dma->bufs[i].buf_count, 321 atomic_read(&dma->bufs[i] 322 .freelist.count), 323 dma->bufs[i].seg_count, 324 dma->bufs[i].seg_count 325 *(1 << dma->bufs[i].page_order), 326 (dma->bufs[i].seg_count 327 * (1 << dma->bufs[i].page_order)) 328 * PAGE_SIZE / 1024); 329 } 330 DRM_SYSCTL_PRINT("\n"); 331 for (i = 0; i < dma->buf_count; i++) { 332 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 333 DRM_SYSCTL_PRINT(" %d", templists[i]); 334 } 335 DRM_SYSCTL_PRINT("\n"); 336 337 SYSCTL_OUT(req, "", 1); 338 done: 339 free(templists, DRM_MEM_DRIVER); 340 return retcode; 341 } 342 343 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 344 { 345 #if defined(__FreeBSD__) 346 struct drm_device *dev = arg1; 347 #elif defined(__NetBSD__) 348 struct drm_device *dev = rnode->sysctl_data; 349 int len = 0; 350 #endif 351 struct drm_file *priv, *tempprivs; 352 char buf[128]; 353 int retcode; 354 int privcount, i; 355 356 DRM_LOCK(); 357 358 privcount = 0; 359 TAILQ_FOREACH(priv, &dev->files, link) 360 privcount++; 361 362 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 363 M_NOWAIT); 364 if (tempprivs == NULL) { 365 DRM_UNLOCK(); 366 return ENOMEM; 367 } 368 i = 0; 369 TAILQ_FOREACH(priv, &dev->files, link) 370 tempprivs[i++] = *priv; 371 372 DRM_UNLOCK(); 373 374 DRM_SYSCTL_PRINT("\na dev pid uid magic ioctls\n"); 375 for (i = 0; i < privcount; i++) { 376 priv = &tempprivs[i]; 377 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n", 378 priv->authenticated ? 'y' : 'n', 379 priv->minor, 380 priv->pid, 381 priv->uid, 382 priv->magic, 383 priv->ioctl_count); 384 } 385 386 SYSCTL_OUT(req, "", 1); 387 done: 388 free(tempprivs, DRM_MEM_DRIVER); 389 return retcode; 390 } 391