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 "drmP.h" 37 38 int drm_set_busid(struct drm_device *); 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 47 drm_getunique(struct drm_device *dev, void *data, 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 64 drm_setunique(struct drm_device *dev, void *data, struct drm_file *file_priv) 65 { 66 struct drm_unique *u = data; 67 char *busid; 68 int domain, bus, slot, func, ret; 69 #if defined (__NetBSD__) 70 return EOPNOTSUPP; 71 #endif 72 73 /* Check and copy in the submitted Bus ID */ 74 if (!u->unique_len || u->unique_len > 1024) 75 return EINVAL; 76 77 busid = drm_alloc(u->unique_len + 1, DRM_MEM_DRIVER); 78 if (busid == NULL) 79 return ENOMEM; 80 81 if (DRM_COPY_FROM_USER(busid, u->unique, u->unique_len)) { 82 drm_free(busid, u->unique_len + 1, DRM_MEM_DRIVER); 83 return EFAULT; 84 } 85 busid[u->unique_len] = '\0'; 86 87 /* Return error if the busid submitted doesn't match the device's actual 88 * busid. 89 */ 90 #ifdef __FreeBSD__ 91 ret = sscanf(busid, "PCI:%d:%d:%d", &bus, &slot, &func); 92 #endif /* Net and Openbsd don't have sscanf in the kernel this is deprecated anyway. */ 93 94 if (ret != 3) { 95 drm_free(busid, u->unique_len + 1, DRM_MEM_DRIVER); 96 return EINVAL; 97 } 98 domain = bus >> 8; 99 bus &= 0xff; 100 101 if ((domain != dev->pci_domain) || (bus != dev->pci_bus) || 102 (slot != dev->pci_slot) || (func != dev->pci_func)) { 103 drm_free(busid, u->unique_len + 1, DRM_MEM_DRIVER); 104 return EINVAL; 105 } 106 107 /* Actually set the device's busid now. */ 108 DRM_LOCK(); 109 if (dev->unique_len || dev->unique) { 110 DRM_UNLOCK(); 111 return EBUSY; 112 } 113 114 dev->unique_len = u->unique_len; 115 dev->unique = busid; 116 DRM_UNLOCK(); 117 118 return 0; 119 } 120 121 122 int 123 drm_set_busid(struct drm_device *dev) 124 { 125 126 DRM_LOCK(); 127 128 if (dev->unique != NULL) { 129 DRM_UNLOCK(); 130 return EBUSY; 131 } 132 133 dev->unique_len = 20; 134 dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER); 135 if (dev->unique == NULL) { 136 DRM_UNLOCK(); 137 return ENOMEM; 138 } 139 140 snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x", 141 dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); 142 143 DRM_UNLOCK(); 144 145 return 0; 146 } 147 148 int 149 drm_getmap(struct drm_device *dev, void *data, struct drm_file *file_priv) 150 { 151 struct drm_map *map = data; 152 drm_local_map_t *mapinlist; 153 int idx, i = 0; 154 155 idx = map->offset; 156 157 DRM_LOCK(); 158 if (idx < 0) { 159 DRM_UNLOCK(); 160 return EINVAL; 161 } 162 163 TAILQ_FOREACH(mapinlist, &dev->maplist, link) { 164 if (i == idx) { 165 map->offset = mapinlist->offset; 166 map->size = mapinlist->size; 167 map->type = mapinlist->type; 168 map->flags = mapinlist->flags; 169 map->handle = mapinlist->handle; 170 map->mtrr = mapinlist->mtrr; 171 break; 172 } 173 i++; 174 } 175 176 DRM_UNLOCK(); 177 178 if (mapinlist == NULL) 179 return EINVAL; 180 181 return 0; 182 } 183 184 int 185 drm_getclient(struct drm_device *dev, void *data, struct drm_file *file_priv) 186 { 187 return (EINVAL); 188 } 189 190 int 191 drm_getstats(struct drm_device *dev, void *data, struct drm_file *file_priv) 192 { 193 return (EINVAL); 194 } 195 196 #define DRM_IF_MAJOR 1 197 #define DRM_IF_MINOR 2 198 199 int 200 drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_priv) 201 { 202 struct drm_set_version ver, *sv = data; 203 int if_version; 204 205 /* Save the incoming data, and set the response before continuing 206 * any further. 207 */ 208 ver = *sv; 209 sv->drm_di_major = DRM_IF_MAJOR; 210 sv->drm_di_minor = DRM_IF_MINOR; 211 sv->drm_dd_major = dev->driver.major; 212 sv->drm_dd_minor = dev->driver.minor; 213 214 if (ver.drm_di_major != -1) { 215 if (ver.drm_di_major != DRM_IF_MAJOR || ver.drm_di_minor < 0 || 216 ver.drm_di_minor > DRM_IF_MINOR) { 217 return EINVAL; 218 } 219 if_version = DRM_IF_VERSION(ver.drm_di_major, ver.drm_dd_minor); 220 dev->if_version = DRM_MAX(if_version, dev->if_version); 221 if (ver.drm_di_minor >= 1) { 222 /* 223 * Version 1.1 includes tying of DRM to specific device 224 */ 225 drm_set_busid(dev); 226 } 227 } 228 229 if (ver.drm_dd_major != -1) { 230 if (ver.drm_dd_major != dev->driver.major || 231 ver.drm_dd_minor < 0 || 232 ver.drm_dd_minor > dev->driver.minor) 233 { 234 return EINVAL; 235 } 236 } 237 238 return 0; 239 } 240 241 242 int 243 drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv) 244 { 245 DRM_DEBUG("\n"); 246 return 0; 247 } 248