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 42 struct drm_sysctl_list { 43 const char *name; 44 int (*f) DRM_SYSCTL_HANDLER_ARGS; 45 } drm_sysctl_list[] = { 46 {"name", drm_name_info}, 47 {"vm", drm_vm_info}, 48 {"clients", drm_clients_info}, 49 {"bufs", drm_bufs_info}, 50 }; 51 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list) 52 53 int drm_sysctl_init(struct drm_device *dev) 54 { 55 struct drm_sysctl_info *info; 56 struct sysctl_oid *oid; 57 struct sysctl_oid *top, *drioid; 58 int i; 59 60 info = kmalloc(sizeof *info, M_DRM, M_WAITOK | M_ZERO); 61 if ( !info ) 62 return 1; 63 dev->sysctl = info; 64 65 /* Add the sysctl node for DRI if it doesn't already exist */ 66 drioid = SYSCTL_ADD_NODE(&info->ctx, &sysctl__hw_children, OID_AUTO, 67 "dri", CTLFLAG_RW, NULL, "DRI Graphics"); 68 if (!drioid) 69 return 1; 70 71 /* Find the next free slot under hw.dri */ 72 i = 0; 73 SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) { 74 if (i <= oid->oid_arg2) 75 i = oid->oid_arg2 + 1; 76 } 77 if (i>9) 78 return 1; 79 80 dev->sysctl_node_idx = i; 81 /* Add the hw.dri.x for our device */ 82 info->name[0] = '0' + i; 83 info->name[1] = 0; 84 top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid), 85 OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 86 if (!top) 87 return 1; 88 89 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 90 oid = SYSCTL_ADD_OID(&info->ctx, 91 SYSCTL_CHILDREN(top), 92 OID_AUTO, 93 drm_sysctl_list[i].name, 94 CTLTYPE_STRING | CTLFLAG_RD, 95 dev, 96 0, 97 drm_sysctl_list[i].f, 98 "A", 99 NULL); 100 if (!oid) 101 return 1; 102 } 103 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug", 104 CTLFLAG_RW, &drm_debug, sizeof(drm_debug), 105 "Enable debugging output"); 106 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet", 107 CTLFLAG_RW, &drm_notyet_flag, sizeof(drm_debug), 108 "Enable notyet reminders"); 109 110 if (dev->driver->sysctl_init != NULL) 111 dev->driver->sysctl_init(dev, &info->ctx, top); 112 113 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 114 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay, 115 sizeof(drm_vblank_offdelay), 116 ""); 117 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, 118 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision, 119 sizeof(drm_timestamp_precision), 120 ""); 121 122 return (0); 123 } 124 125 int drm_sysctl_cleanup(struct drm_device *dev) 126 { 127 int error; 128 129 error = sysctl_ctx_free(&dev->sysctl->ctx); 130 drm_free(dev->sysctl, M_DRM); 131 dev->sysctl = NULL; 132 if (dev->driver->sysctl_cleanup != NULL) 133 dev->driver->sysctl_cleanup(dev); 134 135 return (error); 136 } 137 138 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 139 do { \ 140 ksnprintf(buf, sizeof(buf), fmt, ##arg); \ 141 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 142 if (retcode) \ 143 goto done; \ 144 } while (0) 145 146 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 147 { 148 struct drm_device *dev = arg1; 149 char buf[128]; 150 int retcode; 151 int hasunique = 0; 152 153 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode)); 154 155 DRM_LOCK(dev); 156 if (dev->unique) { 157 ksnprintf(buf, sizeof(buf), " %s", dev->unique); 158 hasunique = 1; 159 } 160 DRM_UNLOCK(dev); 161 162 if (hasunique) 163 SYSCTL_OUT(req, buf, strlen(buf)); 164 165 SYSCTL_OUT(req, "", 1); 166 167 done: 168 return retcode; 169 } 170 171 /** 172 * Called when "/proc/dri/.../vm" is read. 173 * 174 * Prints information about all mappings in drm_device::maplist. 175 */ 176 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 177 { 178 char buf[128]; 179 int retcode; 180 struct drm_device *dev = arg1; 181 struct drm_local_map *map; 182 struct drm_map_list *r_list; 183 184 /* Hardcoded from _DRM_FRAME_BUFFER, 185 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and 186 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ 187 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; 188 const char *type; 189 int i; 190 191 DRM_LOCK(dev); 192 DRM_SYSCTL_PRINT("\nslot offset size " 193 "type flags address handle mtrr\n"); 194 i = 0; 195 list_for_each_entry(r_list, &dev->maplist, head) { 196 map = r_list->map; 197 if (!map) 198 continue; 199 if (map->type < 0 || map->type > 5) 200 type = "??"; 201 else 202 type = types[map->type]; 203 204 DRM_SYSCTL_PRINT("%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ", 205 i, 206 (unsigned long long)map->offset, 207 map->size, type, map->flags, 208 (unsigned long) r_list->user_token); 209 if (map->mtrr < 0) 210 DRM_SYSCTL_PRINT("none\n"); 211 else 212 DRM_SYSCTL_PRINT("%4d\n", map->mtrr); 213 i++; 214 215 } 216 SYSCTL_OUT(req, "", 1); 217 DRM_UNLOCK(dev); 218 219 done: 220 return 0; 221 } 222 223 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 224 { 225 struct drm_device *dev = arg1; 226 drm_device_dma_t *dma = dev->dma; 227 drm_device_dma_t tempdma; 228 int *templists; 229 int i; 230 char buf[128]; 231 int retcode; 232 233 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 234 * copy of the whole structure and the relevant data from buflist. 235 */ 236 DRM_LOCK(dev); 237 if (dma == NULL) { 238 DRM_UNLOCK(dev); 239 return 0; 240 } 241 spin_lock(&dev->dma_lock); 242 tempdma = *dma; 243 templists = kmalloc(sizeof(int) * dma->buf_count, M_DRM, 244 M_WAITOK | M_NULLOK); 245 for (i = 0; i < dma->buf_count; i++) 246 templists[i] = dma->buflist[i]->list; 247 dma = &tempdma; 248 spin_unlock(&dev->dma_lock); 249 DRM_UNLOCK(dev); 250 251 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 252 for (i = 0; i <= DRM_MAX_ORDER; i++) { 253 if (dma->bufs[i].buf_count) 254 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d\n", 255 i, 256 dma->bufs[i].buf_size, 257 dma->bufs[i].buf_count, 258 dma->bufs[i].seg_count, 259 dma->bufs[i].seg_count 260 *(1 << dma->bufs[i].page_order), 261 (dma->bufs[i].seg_count 262 * (1 << dma->bufs[i].page_order)) 263 * (int)PAGE_SIZE / 1024); 264 } 265 DRM_SYSCTL_PRINT("\n"); 266 for (i = 0; i < dma->buf_count; i++) { 267 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 268 DRM_SYSCTL_PRINT(" %d", templists[i]); 269 } 270 DRM_SYSCTL_PRINT("\n"); 271 272 SYSCTL_OUT(req, "", 1); 273 done: 274 drm_free(templists, M_DRM); 275 return retcode; 276 } 277 278 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 279 { 280 struct drm_device *dev = arg1; 281 struct drm_file *priv, *tempprivs; 282 char buf[128]; 283 int retcode; 284 int privcount, i; 285 286 DRM_LOCK(dev); 287 288 privcount = 0; 289 list_for_each_entry(priv, &dev->filelist, lhead) 290 privcount++; 291 292 tempprivs = kmalloc(sizeof(struct drm_file) * privcount, M_DRM, 293 M_WAITOK | M_NULLOK); 294 if (tempprivs == NULL) { 295 DRM_UNLOCK(dev); 296 return ENOMEM; 297 } 298 i = 0; 299 list_for_each_entry(priv, &dev->filelist, lhead) 300 tempprivs[i++] = *priv; 301 302 DRM_UNLOCK(dev); 303 304 DRM_SYSCTL_PRINT( 305 "\na dev pid uid magic ioctls\n"); 306 for (i = 0; i < privcount; i++) { 307 priv = &tempprivs[i]; 308 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n", 309 priv->authenticated ? 'y' : 'n', 310 devtoname(priv->dev->devnode), 311 priv->pid, 312 priv->uid, 313 priv->magic, 314 priv->ioctl_count); 315 } 316 317 SYSCTL_OUT(req, "", 1); 318 done: 319 drm_free(tempprivs, M_DRM); 320 return retcode; 321 } 322