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