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 <drm/drmP.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 NELEM(drm_sysctl_list) 54 55 int drm_sysctl_init(struct drm_device *dev) 56 { 57 struct drm_sysctl_info *info; 58 struct sysctl_oid *oid; 59 struct sysctl_oid *top, *drioid; 60 int i; 61 62 info = kmalloc(sizeof *info, M_DRM, M_WAITOK | M_ZERO); 63 if ( !info ) 64 return 1; 65 dev->sysctl = info; 66 67 /* Add the sysctl node for DRI if it doesn't already exist */ 68 drioid = SYSCTL_ADD_NODE(&info->ctx, &sysctl__hw_children, OID_AUTO, 69 "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 70 if (!drioid) 71 return 1; 72 73 /* Find the next free slot under hw.dri */ 74 i = 0; 75 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 76 if (i <= oid->oid_arg2) 77 i = oid->oid_arg2 + 1; 78 } 79 if (i>9) 80 return 1; 81 82 dev->sysctl_node_idx = i; 83 /* Add the hw.dri.x for our device */ 84 info->name[0] = '0' + i; 85 info->name[1] = 0; 86 top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid), 87 OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 88 if (!top) 89 return 1; 90 91 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 92 oid = SYSCTL_ADD_OID(&info->ctx, 93 SYSCTL_CHILDREN(top), 94 OID_AUTO, 95 drm_sysctl_list[i].name, 96 CTLTYPE_STRING | CTLFLAG_RD, 97 dev, 98 0, 99 drm_sysctl_list[i].f, 100 "A", 101 NULL); 102 if (!oid) 103 return 1; 104 } 105 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 106 CTLFLAG_RW, &drm_debug, sizeof(drm_debug), 107 "Enable debugging output"); 108 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 109 CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug), 110 "Enable notyet reminders"); 111 112 if (dev->driver->sysctl_init != NULL) 113 dev->driver->sysctl_init(dev, &info->ctx, top); 114 115 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 116 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 117 sizeof(drm_vblank_offdelay), 118 ""); 119 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 120 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 121 sizeof(drm_timestamp_precision), 122 ""); 123 124 return (0); 125 } 126 127 int drm_sysctl_cleanup(struct drm_device *dev) 128 { 129 int error; 130 131 error = sysctl_ctx_free(&dev->sysctl->ctx); 132 drm_free(dev->sysctl, M_DRM); 133 dev->sysctl = NULL; 134 if (dev->driver->sysctl_cleanup != NULL) 135 dev->driver->sysctl_cleanup(dev); 136 137 return (error); 138 } 139 140 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 141 do { \ 142 ksnprintf(buf, sizeof(buf), fmt, ##arg); \ 143 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 144 if (retcode) \ 145 goto done; \ 146 } while (0) 147 148 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 149 { 150 struct drm_device *dev = arg1; 151 char buf[128]; 152 int retcode; 153 int hasunique = 0; 154 155 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 156 157 DRM_LOCK(dev); 158 if (dev->unique) { 159 ksnprintf(buf, sizeof(buf), " %s", dev->unique); 160 hasunique = 1; 161 } 162 DRM_UNLOCK(dev); 163 164 if (hasunique) 165 SYSCTL_OUT(req, buf, strlen(buf)); 166 167 SYSCTL_OUT(req, "", 1); 168 169 done: 170 return retcode; 171 } 172 173 /** 174 * Called when "/proc/dri/.../vm" is read. 175 * 176 * Prints information about all mappings in drm_device::maplist. 177 */ 178 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 179 { 180 char buf[128]; 181 int retcode; 182 struct drm_device *dev = arg1; 183 struct drm_local_map *map; 184 struct drm_map_list *r_list; 185 186 /* Hardcoded from _DRM_FRAME_BUFFER, 187 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and 188 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ 189 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; 190 const char *type; 191 int i; 192 193 DRM_LOCK(dev); 194 DRM_SYSCTL_PRINT("\nslot offset size " 195 "type flags address handle mtrr\n"); 196 i = 0; 197 list_for_each_entry(r_list, &dev->maplist, head) { 198 map = r_list->map; 199 if (!map) 200 continue; 201 if (map->type < 0 || map->type > 5) 202 type = "??"; 203 else 204 type = types[map->type]; 205 206 DRM_SYSCTL_PRINT("%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ", 207 i, 208 (unsigned long long)map->offset, 209 map->size, type, map->flags, 210 (unsigned long) r_list->user_token); 211 if (map->mtrr < 0) 212 DRM_SYSCTL_PRINT("none\n"); 213 else 214 DRM_SYSCTL_PRINT("%4d\n", map->mtrr); 215 i++; 216 217 } 218 SYSCTL_OUT(req, "", 1); 219 DRM_UNLOCK(dev); 220 221 done: 222 return 0; 223 } 224 225 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 226 { 227 struct drm_device *dev = arg1; 228 drm_device_dma_t *dma = dev->dma; 229 drm_device_dma_t tempdma; 230 int *templists; 231 int i; 232 char buf[128]; 233 int retcode; 234 235 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 236 * copy of the whole structure and the relevant data from buflist. 237 */ 238 DRM_LOCK(dev); 239 if (dma == NULL) { 240 DRM_UNLOCK(dev); 241 return 0; 242 } 243 spin_lock(&dev->dma_lock); 244 tempdma = *dma; 245 templists = kmalloc(sizeof(int) * dma->buf_count, M_DRM, 246 M_WAITOK | M_NULLOK); 247 for (i = 0; i < dma->buf_count; i++) 248 templists[i] = dma->buflist[i]->list; 249 dma = &tempdma; 250 spin_unlock(&dev->dma_lock); 251 DRM_UNLOCK(dev); 252 253 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 254 for (i = 0; i <= DRM_MAX_ORDER; i++) { 255 if (dma->bufs[i].buf_count) 256 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 257 i, 258 dma->bufs[i].buf_size, 259 dma->bufs[i].buf_count, 260 atomic_read(&dma->bufs[i] 261 .freelist.count), 262 dma->bufs[i].seg_count, 263 dma->bufs[i].seg_count 264 *(1 << dma->bufs[i].page_order), 265 (dma->bufs[i].seg_count 266 * (1 << dma->bufs[i].page_order)) 267 * (int)PAGE_SIZE / 1024); 268 } 269 DRM_SYSCTL_PRINT("\n"); 270 for (i = 0; i < dma->buf_count; i++) { 271 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 272 DRM_SYSCTL_PRINT(" %d", templists[i]); 273 } 274 DRM_SYSCTL_PRINT("\n"); 275 276 SYSCTL_OUT(req, "", 1); 277 done: 278 drm_free(templists, M_DRM); 279 return retcode; 280 } 281 282 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 283 { 284 struct drm_device *dev = arg1; 285 struct drm_file *priv, *tempprivs; 286 char buf[128]; 287 int retcode; 288 int privcount, i; 289 290 DRM_LOCK(dev); 291 292 privcount = 0; 293 list_for_each_entry(priv, &dev->filelist, lhead) 294 privcount++; 295 296 tempprivs = kmalloc(sizeof(struct drm_file) * privcount, M_DRM, 297 M_WAITOK | M_NULLOK); 298 if (tempprivs == NULL) { 299 DRM_UNLOCK(dev); 300 return ENOMEM; 301 } 302 i = 0; 303 list_for_each_entry(priv, &dev->filelist, lhead) 304 tempprivs[i++] = *priv; 305 306 DRM_UNLOCK(dev); 307 308 DRM_SYSCTL_PRINT( 309 "\na dev pid uid magic ioctls\n"); 310 for (i = 0; i < privcount; i++) { 311 priv = &tempprivs[i]; 312 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 313 priv->authenticated ? 'y' : 'n', 314 devtoname(priv->dev->devnode), 315 priv->pid, 316 priv->uid, 317 priv->magic, 318 priv->ioctl_count); 319 } 320 321 SYSCTL_OUT(req, "", 1); 322 done: 323 drm_free(tempprivs, M_DRM); 324 return retcode; 325 } 326 327 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 328 { 329 struct drm_device *dev = arg1; 330 char buf[128]; 331 int retcode; 332 int i; 333 334 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 335 DRM_LOCK(dev); 336 if (dev->_vblank_count == NULL) 337 goto done; 338 for (i = 0 ; i < dev->num_crtcs ; i++) { 339 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 340 i, dev->vblank_refcount[i].counter, 341 dev->_vblank_count[i].counter, 342 dev->last_vblank[i], 343 dev->vblank_enabled[i], 344 dev->vblank_inmodeset[i]); 345 } 346 done: 347 DRM_UNLOCK(dev); 348 349 SYSCTL_OUT(req, "", -1); 350 return retcode; 351 } 352