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 */ 30 31 /** @file drm_ioctl.c 32 * Varios minor DRM ioctls not applicable to other files, such as versioning 33 * information and reporting DRM information to userland. 34 */ 35 36 #include "dev/drm/drmP.h" 37 38 /* 39 * Beginning in revision 1.1 of the DRM interface, getunique will return 40 * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function) 41 * before setunique has been called. The format for the bus-specific part of 42 * the unique is not defined for any other bus. 43 */ 44 int drm_getunique(struct drm_device *dev, void *data, 45 struct drm_file *file_priv) 46 { 47 struct drm_unique *u = data; 48 49 if (u->unique_len >= dev->unique_len) { 50 if (DRM_COPY_TO_USER(u->unique, dev->unique, dev->unique_len)) 51 return EFAULT; 52 } 53 u->unique_len = dev->unique_len; 54 55 return 0; 56 } 57 58 /* Deprecated in DRM version 1.1, and will return EBUSY when setversion has 59 * requested version 1.1 or greater. 60 */ 61 int drm_setunique(struct drm_device *dev, void *data, 62 struct drm_file *file_priv) 63 { 64 struct drm_unique *u = data; 65 int domain, bus, slot, func, ret; 66 char *busid; 67 68 /* Check and copy in the submitted Bus ID */ 69 if (!u->unique_len || u->unique_len > 1024) 70 return EINVAL; 71 72 busid = malloc(u->unique_len + 1, DRM_MEM_DRIVER, M_WAITOK); 73 if (busid == NULL) 74 return ENOMEM; 75 76 if (DRM_COPY_FROM_USER(busid, u->unique, u->unique_len)) { 77 free(busid, DRM_MEM_DRIVER); 78 return EFAULT; 79 } 80 busid[u->unique_len] = '\0'; 81 82 /* Return error if the busid submitted doesn't match the device's actual 83 * busid. 84 */ 85 ret = sscanf(busid, "PCI:%d:%d:%d", &bus, &slot, &func); 86 if (ret != 3) { 87 free(busid, DRM_MEM_DRIVER); 88 return EINVAL; 89 } 90 domain = bus >> 8; 91 bus &= 0xff; 92 93 if ((domain != dev->pci_domain) || 94 (bus != dev->pci_bus) || 95 (slot != dev->pci_slot) || 96 (func != dev->pci_func)) { 97 free(busid, DRM_MEM_DRIVER); 98 return EINVAL; 99 } 100 101 /* Actually set the device's busid now. */ 102 DRM_LOCK(); 103 if (dev->unique_len || dev->unique) { 104 DRM_UNLOCK(); 105 return EBUSY; 106 } 107 108 dev->unique_len = u->unique_len; 109 dev->unique = busid; 110 DRM_UNLOCK(); 111 112 return 0; 113 } 114 115 116 static int 117 drm_set_busid(struct drm_device *dev) 118 { 119 120 DRM_LOCK(); 121 122 if (dev->unique != NULL) { 123 DRM_UNLOCK(); 124 return EBUSY; 125 } 126 127 dev->unique_len = 20; 128 dev->unique = malloc(dev->unique_len + 1, DRM_MEM_DRIVER, M_NOWAIT); 129 if (dev->unique == NULL) { 130 DRM_UNLOCK(); 131 return ENOMEM; 132 } 133 134 snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x", 135 dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); 136 137 DRM_UNLOCK(); 138 139 return 0; 140 } 141 142 int drm_getmap(struct drm_device *dev, void *data, struct drm_file *file_priv) 143 { 144 struct drm_map *map = data; 145 drm_local_map_t *mapinlist; 146 int idx; 147 int i = 0; 148 149 idx = map->offset; 150 151 DRM_LOCK(); 152 if (idx < 0) { 153 DRM_UNLOCK(); 154 return EINVAL; 155 } 156 157 TAILQ_FOREACH(mapinlist, &dev->maplist, link) { 158 if (i == idx) { 159 map->offset = mapinlist->offset; 160 map->size = mapinlist->size; 161 map->type = mapinlist->type; 162 map->flags = mapinlist->flags; 163 map->handle = mapinlist->handle; 164 map->mtrr = mapinlist->mtrr; 165 break; 166 } 167 i++; 168 } 169 170 DRM_UNLOCK(); 171 172 if (mapinlist == NULL) 173 return EINVAL; 174 175 return 0; 176 } 177 178 int drm_getclient(struct drm_device *dev, void *data, 179 struct drm_file *file_priv) 180 { 181 struct drm_client *client = data; 182 struct drm_file *pt; 183 int idx; 184 int i = 0; 185 186 idx = client->idx; 187 DRM_LOCK(); 188 TAILQ_FOREACH(pt, &dev->files, link) { 189 if (i == idx) { 190 client->auth = pt->authenticated; 191 client->pid = pt->pid; 192 client->uid = pt->uid; 193 client->magic = pt->magic; 194 client->iocs = pt->ioctl_count; 195 DRM_UNLOCK(); 196 return 0; 197 } 198 i++; 199 } 200 DRM_UNLOCK(); 201 202 return EINVAL; 203 } 204 205 int drm_getstats(struct drm_device *dev, void *data, struct drm_file *file_priv) 206 { 207 struct drm_stats *stats = data; 208 int i; 209 210 memset(stats, 0, sizeof(struct drm_stats)); 211 212 DRM_LOCK(); 213 214 for (i = 0; i < dev->counters; i++) { 215 if (dev->types[i] == _DRM_STAT_LOCK) 216 stats->data[i].value = 217 (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0); 218 else 219 stats->data[i].value = atomic_read(&dev->counts[i]); 220 stats->data[i].type = dev->types[i]; 221 } 222 223 stats->count = dev->counters; 224 225 DRM_UNLOCK(); 226 227 return 0; 228 } 229 230 #define DRM_IF_MAJOR 1 231 #define DRM_IF_MINOR 2 232 233 int drm_setversion(struct drm_device *dev, void *data, 234 struct drm_file *file_priv) 235 { 236 struct drm_set_version *sv = data; 237 struct drm_set_version ver; 238 int if_version; 239 240 /* Save the incoming data, and set the response before continuing 241 * any further. 242 */ 243 ver = *sv; 244 sv->drm_di_major = DRM_IF_MAJOR; 245 sv->drm_di_minor = DRM_IF_MINOR; 246 sv->drm_dd_major = dev->driver->major; 247 sv->drm_dd_minor = dev->driver->minor; 248 249 if (ver.drm_di_major != -1) { 250 if (ver.drm_di_major != DRM_IF_MAJOR || 251 ver.drm_di_minor < 0 || ver.drm_di_minor > DRM_IF_MINOR) { 252 return EINVAL; 253 } 254 if_version = DRM_IF_VERSION(ver.drm_di_major, 255 ver.drm_dd_minor); 256 dev->if_version = DRM_MAX(if_version, dev->if_version); 257 if (ver.drm_di_minor >= 1) { 258 /* 259 * Version 1.1 includes tying of DRM to specific device 260 */ 261 drm_set_busid(dev); 262 } 263 } 264 265 if (ver.drm_dd_major != -1) { 266 if (ver.drm_dd_major != dev->driver->major || 267 ver.drm_dd_minor < 0 || 268 ver.drm_dd_minor > dev->driver->minor) 269 { 270 return EINVAL; 271 } 272 } 273 274 return 0; 275 } 276 277 278 int drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv) 279 { 280 DRM_DEBUG("\n"); 281 return 0; 282 } 283