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 "dev/drm/drmP.h" 30 #include "dev/drm/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 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS; 39 40 struct drm_sysctl_list { 41 const char *name; 42 int (*f) DRM_SYSCTL_HANDLER_ARGS; 43 } drm_sysctl_list[] = { 44 {"name", drm_name_info}, 45 {"vm", drm_vm_info}, 46 {"clients", drm_clients_info}, 47 {"bufs", drm_bufs_info}, 48 {"vblank", drm_vblank_info}, 49 }; 50 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list) 51 52 struct drm_sysctl_info { 53 struct sysctl_ctx_list ctx; 54 char name[2]; 55 }; 56 57 int drm_sysctl_init(struct drm_device *dev) 58 { 59 struct drm_sysctl_info *info; 60 struct sysctl_oid *oid; 61 struct sysctl_oid *top, *drioid; 62 int i; 63 64 info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO); 65 if ( !info ) 66 return 1; 67 dev->sysctl = info; 68 69 /* Add the sysctl node for DRI if it doesn't already exist */ 70 drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 71 if (!drioid) 72 return 1; 73 74 /* Find the next free slot under hw.dri */ 75 i = 0; 76 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 77 if (i <= oid->oid_arg2) 78 i = oid->oid_arg2 + 1; 79 } 80 if (i>9) 81 return 1; 82 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), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 87 if (!top) 88 return 1; 89 90 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 91 oid = SYSCTL_ADD_OID(&info->ctx, 92 SYSCTL_CHILDREN(top), 93 OID_AUTO, 94 drm_sysctl_list[i].name, 95 CTLTYPE_INT | CTLFLAG_RD, 96 dev, 97 0, 98 drm_sysctl_list[i].f, 99 "A", 100 NULL); 101 if (!oid) 102 return 1; 103 } 104 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug", 105 CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag), 106 "Enable debugging output"); 107 108 return 0; 109 } 110 111 int drm_sysctl_cleanup(struct drm_device *dev) 112 { 113 int error; 114 error = sysctl_ctx_free( &dev->sysctl->ctx ); 115 116 free(dev->sysctl, DRM_MEM_DRIVER); 117 dev->sysctl = NULL; 118 119 return error; 120 } 121 122 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 123 do { \ 124 snprintf(buf, sizeof(buf), fmt, ##arg); \ 125 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 126 if (retcode) \ 127 goto done; \ 128 } while (0) 129 130 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 131 { 132 struct drm_device *dev = arg1; 133 char buf[128]; 134 int retcode; 135 int hasunique = 0; 136 137 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 138 139 DRM_LOCK(); 140 if (dev->unique) { 141 snprintf(buf, sizeof(buf), " %s", dev->unique); 142 hasunique = 1; 143 } 144 DRM_UNLOCK(); 145 146 if (hasunique) 147 SYSCTL_OUT(req, buf, strlen(buf)); 148 149 SYSCTL_OUT(req, "", 1); 150 151 done: 152 return retcode; 153 } 154 155 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 156 { 157 struct drm_device *dev = arg1; 158 drm_local_map_t *map, *tempmaps; 159 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG" }; 160 const char *type, *yesno; 161 int i, mapcount; 162 char buf[128]; 163 int retcode; 164 165 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 166 * temporary copy of all the map entries and then SYSCTL_OUT that. 167 */ 168 DRM_LOCK(); 169 170 mapcount = 0; 171 TAILQ_FOREACH(map, &dev->maplist, link) 172 mapcount++; 173 174 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 175 M_NOWAIT); 176 if (tempmaps == NULL) { 177 DRM_UNLOCK(); 178 return ENOMEM; 179 } 180 181 i = 0; 182 TAILQ_FOREACH(map, &dev->maplist, link) 183 tempmaps[i++] = *map; 184 185 DRM_UNLOCK(); 186 187 DRM_SYSCTL_PRINT("\nslot offset size " 188 "type flags address mtrr\n"); 189 190 for (i = 0; i < mapcount; i++) { 191 map = &tempmaps[i]; 192 193 if (map->type < 0 || map->type > 4) 194 type = "??"; 195 else 196 type = types[map->type]; 197 198 if (!map->mtrr) 199 yesno = "no"; 200 else 201 yesno = "yes"; 202 203 DRM_SYSCTL_PRINT( 204 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n", i, 205 map->offset, map->size, type, map->flags, 206 (unsigned long)map->handle, yesno); 207 } 208 SYSCTL_OUT(req, "", 1); 209 210 done: 211 free(tempmaps, DRM_MEM_DRIVER); 212 return retcode; 213 } 214 215 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 216 { 217 struct drm_device *dev = arg1; 218 drm_device_dma_t *dma = dev->dma; 219 drm_device_dma_t tempdma; 220 int *templists; 221 int i; 222 char buf[128]; 223 int retcode; 224 225 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 226 * copy of the whole structure and the relevant data from buflist. 227 */ 228 DRM_LOCK(); 229 if (dma == NULL) { 230 DRM_UNLOCK(); 231 return 0; 232 } 233 DRM_SPINLOCK(&dev->dma_lock); 234 tempdma = *dma; 235 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 236 M_NOWAIT); 237 for (i = 0; i < dma->buf_count; i++) 238 templists[i] = dma->buflist[i]->list; 239 dma = &tempdma; 240 DRM_SPINUNLOCK(&dev->dma_lock); 241 DRM_UNLOCK(); 242 243 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 244 for (i = 0; i <= DRM_MAX_ORDER; i++) { 245 if (dma->bufs[i].buf_count) 246 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 247 i, 248 dma->bufs[i].buf_size, 249 dma->bufs[i].buf_count, 250 atomic_read(&dma->bufs[i] 251 .freelist.count), 252 dma->bufs[i].seg_count, 253 dma->bufs[i].seg_count 254 *(1 << dma->bufs[i].page_order), 255 (dma->bufs[i].seg_count 256 * (1 << dma->bufs[i].page_order)) 257 * PAGE_SIZE / 1024); 258 } 259 DRM_SYSCTL_PRINT("\n"); 260 for (i = 0; i < dma->buf_count; i++) { 261 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 262 DRM_SYSCTL_PRINT(" %d", templists[i]); 263 } 264 DRM_SYSCTL_PRINT("\n"); 265 266 SYSCTL_OUT(req, "", 1); 267 done: 268 free(templists, DRM_MEM_DRIVER); 269 return retcode; 270 } 271 272 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 273 { 274 struct drm_device *dev = arg1; 275 struct drm_file *priv, *tempprivs; 276 char buf[128]; 277 int retcode; 278 int privcount, i; 279 280 DRM_LOCK(); 281 282 privcount = 0; 283 TAILQ_FOREACH(priv, &dev->files, link) 284 privcount++; 285 286 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 287 M_NOWAIT); 288 if (tempprivs == NULL) { 289 DRM_UNLOCK(); 290 return ENOMEM; 291 } 292 i = 0; 293 TAILQ_FOREACH(priv, &dev->files, link) 294 tempprivs[i++] = *priv; 295 296 DRM_UNLOCK(); 297 298 DRM_SYSCTL_PRINT("\na dev pid uid magic ioctls\n"); 299 for (i = 0; i < privcount; i++) { 300 priv = &tempprivs[i]; 301 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n", 302 priv->authenticated ? 'y' : 'n', 303 priv->minor, 304 priv->pid, 305 priv->uid, 306 priv->magic, 307 priv->ioctl_count); 308 } 309 310 SYSCTL_OUT(req, "", 1); 311 done: 312 free(tempprivs, DRM_MEM_DRIVER); 313 return retcode; 314 } 315 316 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 317 { 318 struct drm_device *dev = arg1; 319 char buf[128]; 320 int retcode; 321 int i; 322 323 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 324 for(i = 0 ; i < dev->num_crtcs ; i++) { 325 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 326 i, atomic_load_acq_32(&dev->vblank[i].refcount), 327 atomic_load_acq_32(&dev->vblank[i].count), 328 atomic_load_acq_32(&dev->vblank[i].last), 329 atomic_load_acq_int(&dev->vblank[i].enabled), 330 atomic_load_acq_int(&dev->vblank[i].inmodeset)); 331 } 332 333 SYSCTL_OUT(req, "", -1); 334 done: 335 return retcode; 336 } 337