1 /*- 2 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Rickard E. (Rik) Faith <faith@valinux.com> 27 * Gareth Hughes <gareth@valinux.com> 28 * 29 * $FreeBSD: src/sys/dev/drm2/drm_ioctl.c,v 1.1 2012/05/22 11:07:44 kib Exp $ 30 */ 31 32 /** @file drm_ioctl.c 33 * Varios minor DRM ioctls not applicable to other files, such as versioning 34 * information and reporting DRM information to userland. 35 */ 36 37 #include "dev/drm/drmP.h" 38 #include <dev/drm/drm_core.h> 39 40 /* 41 * Beginning in revision 1.1 of the DRM interface, getunique will return 42 * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function) 43 * before setunique has been called. The format for the bus-specific part of 44 * the unique is not defined for any other bus. 45 */ 46 int drm_getunique(struct drm_device *dev, void *data, 47 struct drm_file *file_priv) 48 { 49 struct drm_unique *u = data; 50 51 if (u->unique_len >= dev->unique_len) { 52 if (DRM_COPY_TO_USER(u->unique, dev->unique, dev->unique_len)) 53 return EFAULT; 54 } 55 u->unique_len = dev->unique_len; 56 57 return 0; 58 } 59 60 /* Deprecated in DRM version 1.1, and will return EBUSY when setversion has 61 * requested version 1.1 or greater. 62 */ 63 int drm_setunique(struct drm_device *dev, void *data, 64 struct drm_file *file_priv) 65 { 66 struct drm_unique *u = data; 67 int domain, bus, slot, func, ret; 68 char *busid; 69 70 /* Check and copy in the submitted Bus ID */ 71 if (!u->unique_len || u->unique_len > 1024) 72 return EINVAL; 73 74 busid = kmalloc(u->unique_len + 1, DRM_MEM_DRIVER, M_WAITOK); 75 if (busid == NULL) 76 return ENOMEM; 77 78 if (DRM_COPY_FROM_USER(busid, u->unique, u->unique_len)) { 79 drm_free(busid, DRM_MEM_DRIVER); 80 return EFAULT; 81 } 82 busid[u->unique_len] = '\0'; 83 84 /* Return error if the busid submitted doesn't match the device's actual 85 * busid. 86 */ 87 ret = ksscanf(busid, "PCI:%d:%d:%d", &bus, &slot, &func); 88 if (ret != 3) { 89 drm_free(busid, DRM_MEM_DRIVER); 90 return EINVAL; 91 } 92 domain = bus >> 8; 93 bus &= 0xff; 94 95 if ((domain != dev->pci_domain) || 96 (bus != dev->pci_bus) || 97 (slot != dev->pci_slot) || 98 (func != dev->pci_func)) { 99 drm_free(busid, DRM_MEM_DRIVER); 100 return EINVAL; 101 } 102 103 /* Actually set the device's busid now. */ 104 DRM_LOCK(dev); 105 if (dev->unique_len || dev->unique) { 106 DRM_UNLOCK(dev); 107 return EBUSY; 108 } 109 110 dev->unique_len = u->unique_len; 111 dev->unique = busid; 112 DRM_UNLOCK(dev); 113 114 return 0; 115 } 116 117 118 static int 119 drm_set_busid(struct drm_device *dev) 120 { 121 122 DRM_LOCK(dev); 123 124 if (dev->unique != NULL) { 125 DRM_UNLOCK(dev); 126 return EBUSY; 127 } 128 129 dev->unique_len = 20; 130 dev->unique = kmalloc(dev->unique_len + 1, DRM_MEM_DRIVER, M_NOWAIT); 131 if (dev->unique == NULL) { 132 DRM_UNLOCK(dev); 133 return ENOMEM; 134 } 135 136 ksnprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x", 137 dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); 138 139 DRM_UNLOCK(dev); 140 141 return 0; 142 } 143 144 int drm_getmap(struct drm_device *dev, void *data, struct drm_file *file_priv) 145 { 146 struct drm_map *map = data; 147 drm_local_map_t *mapinlist; 148 int idx; 149 int i = 0; 150 151 idx = map->offset; 152 153 DRM_LOCK(dev); 154 if (idx < 0) { 155 DRM_UNLOCK(dev); 156 return EINVAL; 157 } 158 159 TAILQ_FOREACH(mapinlist, &dev->maplist, link) { 160 if (i == idx) { 161 map->offset = mapinlist->offset; 162 map->size = mapinlist->size; 163 map->type = mapinlist->type; 164 map->flags = mapinlist->flags; 165 map->handle = mapinlist->handle; 166 map->mtrr = mapinlist->mtrr; 167 break; 168 } 169 i++; 170 } 171 172 DRM_UNLOCK(dev); 173 174 if (mapinlist == NULL) 175 return EINVAL; 176 177 return 0; 178 } 179 180 int drm_getclient(struct drm_device *dev, void *data, 181 struct drm_file *file_priv) 182 { 183 struct drm_client *client = data; 184 struct drm_file *pt; 185 int idx; 186 int i = 0; 187 188 idx = client->idx; 189 DRM_LOCK(dev); 190 TAILQ_FOREACH(pt, &dev->files, link) { 191 if (i == idx) { 192 client->auth = pt->authenticated; 193 client->pid = pt->pid; 194 client->uid = pt->uid; 195 client->magic = pt->magic; 196 client->iocs = pt->ioctl_count; 197 DRM_UNLOCK(dev); 198 return 0; 199 } 200 i++; 201 } 202 DRM_UNLOCK(dev); 203 204 return EINVAL; 205 } 206 207 int drm_getstats(struct drm_device *dev, void *data, struct drm_file *file_priv) 208 { 209 struct drm_stats *stats = data; 210 int i; 211 212 memset(stats, 0, sizeof(struct drm_stats)); 213 214 DRM_LOCK(dev); 215 216 for (i = 0; i < dev->counters; i++) { 217 if (dev->types[i] == _DRM_STAT_LOCK) 218 stats->data[i].value = 219 (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0); 220 else 221 stats->data[i].value = atomic_read(&dev->counts[i]); 222 stats->data[i].type = dev->types[i]; 223 } 224 225 stats->count = dev->counters; 226 227 DRM_UNLOCK(dev); 228 229 return 0; 230 } 231 232 int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv) 233 { 234 struct drm_get_cap *req = data; 235 236 req->value = 0; 237 switch (req->capability) { 238 case DRM_CAP_DUMB_BUFFER: 239 if (dev->driver->dumb_create) 240 req->value = 1; 241 break; 242 case DRM_CAP_VBLANK_HIGH_CRTC: 243 req->value = 1; 244 break; 245 case DRM_CAP_DUMB_PREFERRED_DEPTH: 246 req->value = dev->mode_config.preferred_depth; 247 break; 248 case DRM_CAP_DUMB_PREFER_SHADOW: 249 req->value = dev->mode_config.prefer_shadow; 250 break; 251 default: 252 return EINVAL; 253 } 254 return 0; 255 } 256 257 int drm_setversion(struct drm_device *dev, void *data, 258 struct drm_file *file_priv) 259 { 260 struct drm_set_version *sv = data; 261 struct drm_set_version ver; 262 int if_version; 263 264 /* Save the incoming data, and set the response before continuing 265 * any further. 266 */ 267 ver = *sv; 268 sv->drm_di_major = DRM_IF_MAJOR; 269 sv->drm_di_minor = DRM_IF_MINOR; 270 sv->drm_dd_major = dev->driver->major; 271 sv->drm_dd_minor = dev->driver->minor; 272 273 DRM_DEBUG("ver.drm_di_major %d ver.drm_di_minor %d " 274 "ver.drm_dd_major %d ver.drm_dd_minor %d\n", 275 ver.drm_di_major, ver.drm_di_minor, ver.drm_dd_major, 276 ver.drm_dd_minor); 277 DRM_DEBUG("sv->drm_di_major %d sv->drm_di_minor %d " 278 "sv->drm_dd_major %d sv->drm_dd_minor %d\n", 279 sv->drm_di_major, sv->drm_di_minor, sv->drm_dd_major, 280 sv->drm_dd_minor); 281 282 if (ver.drm_di_major != -1) { 283 if (ver.drm_di_major != DRM_IF_MAJOR || 284 ver.drm_di_minor < 0 || ver.drm_di_minor > DRM_IF_MINOR) { 285 return EINVAL; 286 } 287 if_version = DRM_IF_VERSION(ver.drm_di_major, 288 ver.drm_dd_minor); 289 dev->if_version = DRM_MAX(if_version, dev->if_version); 290 if (ver.drm_di_minor >= 1) { 291 /* 292 * Version 1.1 includes tying of DRM to specific device 293 */ 294 drm_set_busid(dev); 295 } 296 } 297 298 if (ver.drm_dd_major != -1) { 299 if (ver.drm_dd_major != dev->driver->major || 300 ver.drm_dd_minor < 0 || 301 ver.drm_dd_minor > dev->driver->minor) 302 { 303 return EINVAL; 304 } 305 } 306 307 return 0; 308 } 309 310 311 int drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv) 312 { 313 DRM_DEBUG("\n"); 314 return 0; 315 } 316