Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/drm_sysctl.c
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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/drm/drmP.h" 33 #include "dev/drm/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 if ( !info ) 69 return 1; 70 dev->sysctl = info; 71 72 /* Add the sysctl node for DRI if it doesn't already exist */ 73 drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 74 if (!drioid) 75 return 1; 76 77 /* Find the next free slot under hw.dri */ 78 i = 0; 79 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 80 if (i <= oid->oid_arg2) 81 i = oid->oid_arg2 + 1; 82 } 83 if (i>9) 84 return 1; 85 86 /* Add the hw.dri.x for our device */ 87 info->name[0] = '' + i; 88 info->name[1] = 0; 89 top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 90 if (!top) 91 return 1; 92 93 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 94 oid = SYSCTL_ADD_OID(&info->ctx, 95 SYSCTL_CHILDREN(top), 96 OID_AUTO, 97 drm_sysctl_list[i].name, 98 CTLTYPE_STRING | CTLFLAG_RD, 99 dev, 100 0, 101 drm_sysctl_list[i].f, 102 "A", 103 NULL); 104 if (!oid) 105 return 1; 106 } 107 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug", 108 CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag), 109 "Enable debugging output"); 110 111 return 0; 112 } 113 114 int drm_sysctl_cleanup(struct drm_device *dev) 115 { 116 int error; 117 error = sysctl_ctx_free( &dev->sysctl->ctx ); 118 119 free(dev->sysctl, DRM_MEM_DRIVER); 120 dev->sysctl = NULL; 121 122 return error; 123 } 124 125 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 126 do { \ 127 snprintf(buf, sizeof(buf), fmt, ##arg); \ 128 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 129 if (retcode) \ 130 goto done; \ 131 } while (0) 132 133 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 134 { 135 struct drm_device *dev = arg1; 136 char buf[128]; 137 int retcode; 138 int hasunique = 0; 139 140 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 141 142 DRM_LOCK(); 143 if (dev->unique) { 144 snprintf(buf, sizeof(buf), " %s", dev->unique); 145 hasunique = 1; 146 } 147 DRM_UNLOCK(); 148 149 if (hasunique) 150 SYSCTL_OUT(req, buf, strlen(buf)); 151 152 SYSCTL_OUT(req, "", 1); 153 154 done: 155 return retcode; 156 } 157 158 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 159 { 160 struct drm_device *dev = arg1; 161 drm_local_map_t *map, *tempmaps; 162 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG" }; 163 const char *type, *yesno; 164 int i, mapcount; 165 char buf[128]; 166 int retcode; 167 168 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a 169 * temporary copy of all the map entries and then SYSCTL_OUT that. 170 */ 171 DRM_LOCK(); 172 173 mapcount = 0; 174 TAILQ_FOREACH(map, &dev->maplist, link) 175 mapcount++; 176 177 tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER, 178 M_NOWAIT); 179 if (tempmaps == NULL) { 180 DRM_UNLOCK(); 181 return ENOMEM; 182 } 183 184 i = 0; 185 TAILQ_FOREACH(map, &dev->maplist, link) 186 tempmaps[i++] = *map; 187 188 DRM_UNLOCK(); 189 190 DRM_SYSCTL_PRINT("\nslot offset size " 191 "type flags address handle mtrr\n"); 192 193 for (i = 0; i < mapcount; i++) { 194 map = &tempmaps[i]; 195 196 if (map->type < 0 || map->type > 4) 197 type = "??"; 198 else 199 type = types[map->type]; 200 201 if (!map->mtrr) 202 yesno = "no"; 203 else 204 yesno = "yes"; 205 206 DRM_SYSCTL_PRINT( 207 "%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %6d %s\n", 208 i, map->offset, map->size, type, map->flags, 209 (unsigned long)map->virtual, 210 (unsigned int)((unsigned long)map->handle >> 211 DRM_MAP_HANDLE_SHIFT), yesno); 212 } 213 SYSCTL_OUT(req, "", 1); 214 215 done: 216 free(tempmaps, DRM_MEM_DRIVER); 217 return retcode; 218 } 219 220 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 221 { 222 struct drm_device *dev = arg1; 223 drm_device_dma_t *dma = dev->dma; 224 drm_device_dma_t tempdma; 225 int *templists; 226 int i; 227 char buf[128]; 228 int retcode; 229 230 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 231 * copy of the whole structure and the relevant data from buflist. 232 */ 233 DRM_LOCK(); 234 if (dma == NULL) { 235 DRM_UNLOCK(); 236 return 0; 237 } 238 DRM_SPINLOCK(&dev->dma_lock); 239 tempdma = *dma; 240 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER, 241 M_NOWAIT); 242 for (i = 0; i < dma->buf_count; i++) 243 templists[i] = dma->buflist[i]->list; 244 dma = &tempdma; 245 DRM_SPINUNLOCK(&dev->dma_lock); 246 DRM_UNLOCK(); 247 248 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 249 for (i = 0; i <= DRM_MAX_ORDER; i++) { 250 if (dma->bufs[i].buf_count) 251 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 252 i, 253 dma->bufs[i].buf_size, 254 dma->bufs[i].buf_count, 255 atomic_read(&dma->bufs[i] 256 .freelist.count), 257 dma->bufs[i].seg_count, 258 dma->bufs[i].seg_count 259 *(1 << dma->bufs[i].page_order), 260 (dma->bufs[i].seg_count 261 * (1 << dma->bufs[i].page_order)) 262 * (int)PAGE_SIZE / 1024); 263 } 264 DRM_SYSCTL_PRINT("\n"); 265 for (i = 0; i < dma->buf_count; i++) { 266 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 267 DRM_SYSCTL_PRINT(" %d", templists[i]); 268 } 269 DRM_SYSCTL_PRINT("\n"); 270 271 SYSCTL_OUT(req, "", 1); 272 done: 273 free(templists, DRM_MEM_DRIVER); 274 return retcode; 275 } 276 277 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 278 { 279 struct drm_device *dev = arg1; 280 struct drm_file *priv, *tempprivs; 281 char buf[128]; 282 int retcode; 283 int privcount, i; 284 285 DRM_LOCK(); 286 287 privcount = 0; 288 TAILQ_FOREACH(priv, &dev->files, link) 289 privcount++; 290 291 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER, 292 M_NOWAIT); 293 if (tempprivs == NULL) { 294 DRM_UNLOCK(); 295 return ENOMEM; 296 } 297 i = 0; 298 TAILQ_FOREACH(priv, &dev->files, link) 299 tempprivs[i++] = *priv; 300 301 DRM_UNLOCK(); 302 303 DRM_SYSCTL_PRINT( 304 "\na dev pid uid magic ioctls\n"); 305 for (i = 0; i < privcount; i++) { 306 priv = &tempprivs[i]; 307 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 308 priv->authenticated ? 'y' : 'n', 309 devtoname(priv->dev->devnode), 310 priv->pid, 311 priv->uid, 312 priv->magic, 313 priv->ioctl_count); 314 } 315 316 SYSCTL_OUT(req, "", 1); 317 done: 318 free(tempprivs, DRM_MEM_DRIVER); 319 return retcode; 320 } 321 322 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS 323 { 324 struct drm_device *dev = arg1; 325 char buf[128]; 326 int retcode; 327 int i; 328 329 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n"); 330 for(i = 0 ; i < dev->num_crtcs ; i++) { 331 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n", 332 i, atomic_load_acq_32(&dev->vblank[i].refcount), 333 atomic_load_acq_32(&dev->vblank[i].count), 334 atomic_load_acq_32(&dev->vblank[i].last), 335 atomic_load_acq_int(&dev->vblank[i].enabled), 336 atomic_load_acq_int(&dev->vblank[i].inmodeset)); 337 } 338 339 SYSCTL_OUT(req, "", -1); 340 done: 341 return retcode; 342 }
Cache object: a5b544c6eff269b632a2ae70be320fad
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