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 * $DragonFly: src/sys/dev/drm/drm_sysctl.c,v 1.1 2008/04/05 18:12:29 hasso 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 "drmP.h" 32 #include "drm.h" 33 34 #include <sys/sysctl.h> 35 36 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 37 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 38 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 39 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 40 41 struct drm_sysctl_list { 42 const char *name; 43 int (*f) DRM_SYSCTL_HANDLER_ARGS; 44 } drm_sysctl_list[] = { 45 {"name", drm_name_info}, 46 {"vm", drm_vm_info}, 47 {"clients", drm_clients_info}, 48 {"bufs", drm_bufs_info}, 49 }; 50 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0])) 51 52 struct drm_sysctl_info { 53 struct sysctl_ctx_list ctx; 54 char name[2]; 55 }; 56 57 int drm_sysctl_init(drm_device_t *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, M_DRM, 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(drm_device_t *dev) 112 { 113 int error; 114 error = sysctl_ctx_free( &dev->sysctl->ctx ); 115 116 free(dev->sysctl, M_DRM); 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 drm_device_t *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 drm_device_t *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, M_DRM, M_NOWAIT); 175 if (tempmaps == NULL) { 176 DRM_UNLOCK(); 177 return ENOMEM; 178 } 179 180 i = 0; 181 TAILQ_FOREACH(map, &dev->maplist, link) 182 tempmaps[i++] = *map; 183 184 DRM_UNLOCK(); 185 186 DRM_SYSCTL_PRINT("\nslot offset size type flags " 187 "address mtrr\n"); 188 189 for (i = 0; i < mapcount; i++) { 190 map = &tempmaps[i]; 191 192 if (map->type < 0 || map->type > 4) 193 type = "??"; 194 else 195 type = types[map->type]; 196 197 if (!map->mtrr) 198 yesno = "no"; 199 else 200 yesno = "yes"; 201 202 DRM_SYSCTL_PRINT( 203 "%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx %s\n", i, 204 map->offset, map->size, type, map->flags, 205 (unsigned long)map->handle, yesno); 206 } 207 SYSCTL_OUT(req, "", 1); 208 209 done: 210 free(tempmaps, M_DRM); 211 return retcode; 212 } 213 214 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 215 { 216 drm_device_t *dev = arg1; 217 drm_device_dma_t *dma = dev->dma; 218 drm_device_dma_t tempdma; 219 int *templists; 220 int i; 221 char buf[128]; 222 int retcode; 223 224 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 225 * copy of the whole structure and the relevant data from buflist. 226 */ 227 DRM_LOCK(); 228 if (dma == NULL) { 229 DRM_UNLOCK(); 230 return 0; 231 } 232 DRM_SPINLOCK(&dev->dma_lock); 233 tempdma = *dma; 234 templists = malloc(sizeof(int) * dma->buf_count, M_DRM, M_NOWAIT); 235 for (i = 0; i < dma->buf_count; i++) 236 templists[i] = dma->buflist[i]->list; 237 dma = &tempdma; 238 DRM_SPINUNLOCK(&dev->dma_lock); 239 DRM_UNLOCK(); 240 241 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 242 for (i = 0; i <= DRM_MAX_ORDER; i++) { 243 if (dma->bufs[i].buf_count) 244 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n", 245 i, 246 dma->bufs[i].buf_size, 247 dma->bufs[i].buf_count, 248 atomic_read(&dma->bufs[i] 249 .freelist.count), 250 dma->bufs[i].seg_count, 251 dma->bufs[i].seg_count 252 *(1 << dma->bufs[i].page_order), 253 (dma->bufs[i].seg_count 254 * (1 << dma->bufs[i].page_order)) 255 * PAGE_SIZE / 1024); 256 } 257 DRM_SYSCTL_PRINT("\n"); 258 for (i = 0; i < dma->buf_count; i++) { 259 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 260 DRM_SYSCTL_PRINT(" %d", templists[i]); 261 } 262 DRM_SYSCTL_PRINT("\n"); 263 264 SYSCTL_OUT(req, "", 1); 265 done: 266 free(templists, M_DRM); 267 return retcode; 268 } 269 270 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 271 { 272 drm_device_t *dev = arg1; 273 drm_file_t *priv, *tempprivs; 274 char buf[128]; 275 int retcode; 276 int privcount, i; 277 278 DRM_LOCK(); 279 280 privcount = 0; 281 TAILQ_FOREACH(priv, &dev->files, link) 282 privcount++; 283 284 tempprivs = malloc(sizeof(drm_file_t) * privcount, M_DRM, M_NOWAIT); 285 if (tempprivs == NULL) { 286 DRM_UNLOCK(); 287 return ENOMEM; 288 } 289 i = 0; 290 TAILQ_FOREACH(priv, &dev->files, link) 291 tempprivs[i++] = *priv; 292 293 DRM_UNLOCK(); 294 295 DRM_SYSCTL_PRINT("\na dev pid uid magic ioctls\n"); 296 for (i = 0; i < privcount; i++) { 297 priv = &tempprivs[i]; 298 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n", 299 priv->authenticated ? 'y' : 'n', 300 priv->minor, 301 priv->pid, 302 priv->uid, 303 priv->magic, 304 priv->ioctl_count); 305 } 306 307 SYSCTL_OUT(req, "", 1); 308 done: 309 free(tempprivs, M_DRM); 310 return retcode; 311 } 312