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 * $FreeBSD: src/sys/dev/drm2/drm_sysctl.c,v 1.1 2012/05/22 11:07:44 kib Exp $ 24 */ 25 26 /** @file drm_sysctl.c 27 * Implementation of various sysctls for controlling DRM behavior and reporting 28 * debug information. 29 */ 30 31 #include <sys/conf.h> 32 #include <sys/sysctl.h> 33 #include <sys/types.h> 34 35 #include "dev/drm/drmP.h" 36 #include "dev/drm/drm.h" 37 38 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 39 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 40 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 41 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 42 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS; 43 44 struct drm_sysctl_list { 45 const char *name; 46 int (*f) DRM_SYSCTL_HANDLER_ARGS; 47 } drm_sysctl_list[] = { 48 {"name", drm_name_info}, 49 {"vm", drm_vm_info}, 50 {"clients", drm_clients_info}, 51 {"bufs", drm_bufs_info}, 52 {"vblank", drm_vblank_info}, 53 }; 54 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list) 55 56 struct drm_sysctl_info { 57 struct sysctl_ctx_list ctx; 58 char name[2]; 59 }; 60 61 int drm_sysctl_init(struct drm_device *dev) 62 { 63 struct drm_sysctl_info *info; 64 struct sysctl_oid *oid; 65 struct sysctl_oid *top, *drioid; 66 int i; 67 68 info = kmalloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 69 if ( !info ) 70 return 1; 71 dev->sysctl = info; 72 73 /* Add the sysctl node for DRI if it doesn't already exist */ 74 drioid = SYSCTL_ADD_NODE(&info->ctx, &sysctl__hw_children, OID_AUTO, 75 "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 76 if (!drioid) 77 return 1; 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 return 1; 87 88 dev->sysctl_node_idx = i; 89 /* Add the hw.dri.x for our device */ 90 info->name[0] = '0' + i; 91 info->name[1] = 0; 92 top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid), 93 OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 94 if (!top) 95 return 1; 96 97 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 98 oid = SYSCTL_ADD_OID(&info->ctx, 99 SYSCTL_CHILDREN(top), 100 OID_AUTO, 101 drm_sysctl_list[i].name, 102 CTLTYPE_STRING | CTLFLAG_RD, 103 dev, 104 0, 105 drm_sysctl_list[i].f, 106 "A", 107 NULL); 108 if (!oid) 109 return 1; 110 } 111 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 112 CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag), 113 "Enable debugging output"); 114 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 115 CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug_flag), 116 "Enable notyet reminders"); 117 118 if (dev->driver->sysctl_init != NULL) 119 dev->driver->sysctl_init(dev, &info->ctx, top); 120 121 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 122 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 123 sizeof(drm_vblank_offdelay), 124 ""); 125 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 126 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 127 sizeof(drm_timestamp_precision), 128 ""); 129 130 return (0); 131 } 132 133 int drm_sysctl_cleanup(struct drm_device *dev) 134 { 135 int error; 136 137 error = sysctl_ctx_free(&dev->sysctl->ctx); 138 drm_free(dev->sysctl, DRM_MEM_DRIVER); 139 dev->sysctl = NULL; 140 if (dev->driver->sysctl_cleanup != NULL) 141 dev->driver->sysctl_cleanup(dev); 142 143 return (error); 144 } 145 146 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 147 do { \ 148 ksnprintf(buf, sizeof(buf), fmt, ##arg); \ 149 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 150 if (retcode) \ 151 goto done; \ 152 } while (0) 153 154 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 155 { 156 struct drm_device *dev = arg1; 157 char buf[128]; 158 int retcode; 159 int hasunique = 0; 160 161 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 162 163 DRM_LOCK(dev); 164 if (dev->unique) { 165 ksnprintf(buf, sizeof(buf), " %s", dev->unique); 166 hasunique = 1; 167 } 168 DRM_UNLOCK(dev); 169 170 if (hasunique) 171 SYSCTL_OUT(req, buf, strlen(buf)); 172 173 SYSCTL_OUT(req, "", 1); 174 175 done: 176 return retcode; 177 } 178 179 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 180 { 181 struct drm_device *dev = arg1; 182 drm_local_map_t *map, *tempmaps; 183 const char *types[] = { 184 [_DRM_FRAME_BUFFER] = "FB", 185 [_DRM_REGISTERS] = "REG", 186 [_DRM_SHM] = "SHM", 187 [_DRM_AGP] = "AGP", 188 [_DRM_SCATTER_GATHER] = "SG", 189 [_DRM_CONSISTENT] = "CONS", 190 [_DRM_GEM] = "GEM" 191 }; 192 const char *type, *yesno; 193 int i, mapcount; 194 char buf[128]; 195 int retcode; 196 197 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 198 * temporary copy of all the map entries and then SYSCTL_OUT that. 199 */ 200 DRM_LOCK(dev); 201 202 mapcount = 0; 203 TAILQ_FOREACH(map, &dev->maplist, link) 204 mapcount++; 205 206 tempmaps = kmalloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 207 M_NOWAIT); 208 if (tempmaps == NULL) { 209 DRM_UNLOCK(dev); 210 return ENOMEM; 211 } 212 213 i = 0; 214 TAILQ_FOREACH(map, &dev->maplist, link) 215 tempmaps[i++] = *map; 216 217 DRM_UNLOCK(dev); 218 219 DRM_SYSCTL_PRINT("\nslot offset size " 220 "type flags address handle mtrr\n"); 221 222 for (i = 0; i < mapcount; i++) { 223 map = &tempmaps[i]; 224 225 switch(map->type) { 226 default: 227 type = "??"; 228 break; 229 case _DRM_FRAME_BUFFER: 230 case _DRM_REGISTERS: 231 case _DRM_SHM: 232 case _DRM_AGP: 233 case _DRM_SCATTER_GATHER: 234 case _DRM_CONSISTENT: 235 case _DRM_GEM: 236 type = types[map->type]; 237 break; 238 } 239 240 if (!map->mtrr) 241 yesno = "no"; 242 else 243 yesno = "yes"; 244 245 DRM_SYSCTL_PRINT( 246 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %6d %s\n", 247 i, map->offset, map->size, type, map->flags, 248 (unsigned long)map->virtual, 249 (unsigned int)((unsigned long)map->handle >> 250 DRM_MAP_HANDLE_SHIFT), yesno); 251 } 252 SYSCTL_OUT(req, "", 1); 253 254 done: 255 drm_free(tempmaps, DRM_MEM_DRIVER); 256 return retcode; 257 } 258 259 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 260 { 261 struct drm_device *dev = arg1; 262 drm_device_dma_t *dma = dev->dma; 263 drm_device_dma_t tempdma; 264 int *templists; 265 int i; 266 char buf[128]; 267 int retcode; 268 269 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 270 * copy of the whole structure and the relevant data from buflist. 271 */ 272 DRM_LOCK(dev); 273 if (dma == NULL) { 274 DRM_UNLOCK(dev); 275 return 0; 276 } 277 spin_lock(&dev->dma_lock); 278 tempdma = *dma; 279 templists = kmalloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 280 M_NOWAIT); 281 for (i = 0; i < dma->buf_count; i++) 282 templists[i] = dma->buflist[i]->list; 283 dma = &tempdma; 284 spin_unlock(&dev->dma_lock); 285 DRM_UNLOCK(dev); 286 287 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 288 for (i = 0; i <= DRM_MAX_ORDER; i++) { 289 if (dma->bufs[i].buf_count) 290 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 291 i, 292 dma->bufs[i].buf_size, 293 dma->bufs[i].buf_count, 294 atomic_read(&dma->bufs[i] 295 .freelist.count), 296 dma->bufs[i].seg_count, 297 dma->bufs[i].seg_count 298 *(1 << dma->bufs[i].page_order), 299 (dma->bufs[i].seg_count 300 * (1 << dma->bufs[i].page_order)) 301 * (int)PAGE_SIZE / 1024); 302 } 303 DRM_SYSCTL_PRINT("\n"); 304 for (i = 0; i < dma->buf_count; i++) { 305 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 306 DRM_SYSCTL_PRINT(" %d", templists[i]); 307 } 308 DRM_SYSCTL_PRINT("\n"); 309 310 SYSCTL_OUT(req, "", 1); 311 done: 312 drm_free(templists, DRM_MEM_DRIVER); 313 return retcode; 314 } 315 316 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 317 { 318 struct drm_device *dev = arg1; 319 struct drm_file *priv, *tempprivs; 320 char buf[128]; 321 int retcode; 322 int privcount, i; 323 324 DRM_LOCK(dev); 325 326 privcount = 0; 327 TAILQ_FOREACH(priv, &dev->files, link) 328 privcount++; 329 330 tempprivs = kmalloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 331 M_NOWAIT); 332 if (tempprivs == NULL) { 333 DRM_UNLOCK(dev); 334 return ENOMEM; 335 } 336 i = 0; 337 TAILQ_FOREACH(priv, &dev->files, link) 338 tempprivs[i++] = *priv; 339 340 DRM_UNLOCK(dev); 341 342 DRM_SYSCTL_PRINT( 343 "\na dev pid uid magic ioctls\n"); 344 for (i = 0; i < privcount; i++) { 345 priv = &tempprivs[i]; 346 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 347 priv->authenticated ? 'y' : 'n', 348 devtoname(priv->dev->devnode), 349 priv->pid, 350 priv->uid, 351 priv->magic, 352 priv->ioctl_count); 353 } 354 355 SYSCTL_OUT(req, "", 1); 356 done: 357 drm_free(tempprivs, DRM_MEM_DRIVER); 358 return retcode; 359 } 360 361 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 362 { 363 struct drm_device *dev = arg1; 364 char buf[128]; 365 int retcode; 366 int i; 367 368 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 369 DRM_LOCK(dev); 370 if (dev->_vblank_count == NULL) 371 goto done; 372 for (i = 0 ; i < dev->num_crtcs ; i++) { 373 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 374 i, dev->vblank_refcount[i], 375 dev->_vblank_count[i], 376 dev->last_vblank[i], 377 dev->vblank_enabled[i], 378 dev->vblank_inmodeset[i]); 379 } 380 done: 381 DRM_UNLOCK(dev); 382 383 SYSCTL_OUT(req, "", -1); 384 return retcode; 385 } 386