usr/src/uts/common/io/drm/drm_ioctl.c

   1 /*
   2  * drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
   3  * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
   4  */
   5 /*
   6  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   7  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   8  * All Rights Reserved.
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a
  11  * copy of this software and associated documentation files (the "Software"),
  12  * to deal in the Software without restriction, including without limitation
  13  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14  * and/or sell copies of the Software, and to permit persons to whom the
  15  * Software is furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice (including the next
  18  * paragraph) shall be included in all copies or substantial portions of the
  19  * Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  24  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  25  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  26  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  27  * OTHER DEALINGS IN THE SOFTWARE.
  28  *
  29  * Authors:
  30  *    Rickard E. (Rik) Faith <faith@valinux.com>
  31  *    Gareth Hughes <gareth@valinux.com>
  32  *
  33  */
  34
  35 /*
  36  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  37  * Use is subject to license terms.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 #include "drmP.h"
  43 #include "drm_io32.h"
  44
  45 /*
  46  * Beginning in revision 1.1 of the DRM interface, getunique will return
  47  * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
  48  * before setunique has been called.  The format for the bus-specific part of
  49  * the unique is not defined for any other bus.
  50  */
  51 /*ARGSUSED*/
  52 int
  53 drm_getunique(DRM_IOCTL_ARGS)
  54 {
  55         DRM_DEVICE;
  56         drm_unique_t     u1;
  57
  58 #ifdef  _MULTI_DATAMODEL
  59         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
  60                 drm_unique_32_t u32;
  61
  62                 DRM_COPYFROM_WITH_RETURN(&u32, (void *)data, sizeof (u32));
  63                 u1.unique_len = u32.unique_len;
  64                 u1.unique = (char __user *)(uintptr_t)u32.unique;
  65         } else
  66 #endif
  67                 DRM_COPYFROM_WITH_RETURN(&u1, (void *)data, sizeof (u1));
  68
  69         if (u1.unique_len >= dev->unique_len) {
  70                 if (dev->unique_len == 0) {
  71                         DRM_ERROR("drm_getunique: dev->unique_len = 0");
  72                         return (EFAULT);
  73                 }
  74                 if (DRM_COPY_TO_USER(u1.unique, dev->unique, dev->unique_len))
  75                         return (EFAULT);
  76         }
  77         u1.unique_len = dev->unique_len;
  78
  79 #ifdef  _MULTI_DATAMODEL
  80         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
  81                 drm_unique_32_t u32;
  82
  83                 u32.unique_len = (uint32_t)u1.unique_len;
  84                 u32.unique = (caddr32_t)(uintptr_t)u1.unique;
  85                 DRM_COPYTO_WITH_RETURN((void *)data, &u32, sizeof (u32));
  86         } else
  87 #endif
  88                 DRM_COPYTO_WITH_RETURN((void *)data, &u1, sizeof (u1));
  89
  90         return (0);
  91 }
  92
  93 /*
  94  * Deprecated in DRM version 1.1, and will return EBUSY when setversion has
  95  * requested version 1.1 or greater.
  96  */
  97 /*ARGSUSED*/
  98 int
  99 drm_setunique(DRM_IOCTL_ARGS)
 100 {
 101         return (EINVAL);
 102 }
 103
 104
 105 static int
 106 drm_set_busid(drm_device_t *dev)
 107 {
 108         DRM_LOCK();
 109
 110         if (dev->unique != NULL) {
 111                 DRM_UNLOCK();
 112                 return (EBUSY);
 113         }
 114
 115         dev->unique_len = 20;
 116         dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
 117         if (dev->unique == NULL) {
 118                 DRM_UNLOCK();
 119                 return (ENOMEM);
 120         }
 121
 122         (void) snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
 123             dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
 124
 125         DRM_UNLOCK();
 126
 127         return (0);
 128 }
 129
 130 /*ARGSUSED*/
 131 int
 132 drm_getmap(DRM_IOCTL_ARGS)
 133 {
 134         DRM_DEVICE;
 135         drm_map_t       map;
 136         drm_local_map_t    *mapinlist;
 137         int             idx;
 138         int             i = 0;
 139
 140 #ifdef  _MULTI_DATAMODEL
 141         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 142                 drm_map_32_t map32;
 143
 144                 DRM_COPYFROM_WITH_RETURN(&map32, (void *)data, sizeof (map32));
 145                 map.offset = map32.offset;
 146                 map.size = map32.size;
 147                 map.type = map32.type;
 148                 map.flags = map32.flags;
 149                 map.handle = map32.handle;
 150                 map.mtrr = map32.mtrr;
 151         } else
 152 #endif
 153                 DRM_COPYFROM_WITH_RETURN(&map, (void *)data, sizeof (map));
 154
 155         idx = (int)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 = (unsigned long long)(uintptr_t)
 170                             mapinlist->handle;
 171                         map.mtrr   = mapinlist->mtrr;
 172                         break;
 173                 }
 174                 i++;
 175         }
 176
 177         DRM_UNLOCK();
 178
 179         if (mapinlist == NULL)
 180                 return (EINVAL);
 181
 182 #ifdef  _MULTI_DATAMODEL
 183         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 184                 drm_map_32_t map32;
 185
 186                 map32.offset = map.offset;
 187                 map32.size = (uint32_t)map.size;
 188                 map32.type = map.type;
 189                 map32.flags = map.flags;
 190                 map32.handle = (uintptr_t)map.handle;
 191                 map32.mtrr = map.mtrr;
 192                 DRM_COPYTO_WITH_RETURN((void *)data, &map32, sizeof (map32));
 193         } else
 194 #endif
 195                 DRM_COPYTO_WITH_RETURN((void *)data, &map, sizeof (map));
 196
 197         return (0);
 198 }
 199
 200 /*ARGSUSED*/
 201 int
 202 drm_getclient(DRM_IOCTL_ARGS)
 203 {
 204         DRM_DEVICE;
 205         drm_client_t    client;
 206         drm_file_t      *pt;
 207         int             idx;
 208         int             i = 0;
 209
 210 #ifdef  _MULTI_DATAMODEL
 211         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 212                 drm_client_32_t client32;
 213
 214                 DRM_COPYFROM_WITH_RETURN(&client32, (void *)data,
 215                     sizeof (client32));
 216                 client.idx = client32.idx;
 217                 client.auth = client32.auth;
 218                 client.pid = client32.pid;
 219                 client.uid = client32.uid;
 220                 client.magic = client32.magic;
 221                 client.iocs = client32.iocs;
 222         } else
 223 #endif
 224                 DRM_COPYFROM_WITH_RETURN(&client, (void *)data,
 225                     sizeof (client));
 226
 227         idx = client.idx;
 228         DRM_LOCK();
 229         TAILQ_FOREACH(pt, &dev->files, link) {
 230                 if (i == idx) {
 231                         client.auth  = pt->authenticated;
 232                         client.pid   = pt->pid;
 233                         client.uid   = pt->uid;
 234                         client.magic = pt->magic;
 235                         client.iocs  = pt->ioctl_count;
 236                         DRM_UNLOCK();
 237
 238 #ifdef  _MULTI_DATAMODEL
 239                         if (ddi_model_convert_from(mode & FMODELS) ==
 240                             DDI_MODEL_ILP32) {
 241                                 drm_client_32_t client32;
 242
 243                                 client32.idx = client.idx;
 244                                 client32.auth = client.auth;
 245                                 client32.pid = (uint32_t)client.pid;
 246                                 client32.uid = (uint32_t)client.uid;
 247                                 client32.magic = (uint32_t)client.magic;
 248                                 client32.iocs = (uint32_t)client.iocs;
 249
 250                                 DRM_COPYTO_WITH_RETURN((void *)data, &client32,
 251                                     sizeof (client32));
 252                         } else
 253 #endif
 254                                 DRM_COPYTO_WITH_RETURN((void *)data,
 255                                     &client, sizeof (client));
 256
 257                         return (0);
 258                 }
 259                 i++;
 260         }
 261         DRM_UNLOCK();
 262         return (EINVAL);
 263 }
 264
 265 /*ARGSUSED*/
 266 int
 267 drm_getstats(DRM_IOCTL_ARGS)
 268 {
 269         DRM_DEVICE;
 270         drm_stats_t     stats;
 271         int             i;
 272
 273         bzero(&stats, sizeof (stats));
 274
 275         DRM_LOCK();
 276
 277         for (i = 0; i < dev->counters; i++) {
 278                 if (dev->types[i] == _DRM_STAT_LOCK) {
 279                         stats.data[i].value
 280                             = (dev->lock.hw_lock
 281                             ? dev->lock.hw_lock->lock : 0);
 282                 } else
 283                         stats.data[i].value = atomic_read(&dev->counts[i]);
 284                 stats.data[i].type  = dev->types[i];
 285         }
 286
 287         stats.count = dev->counters;
 288
 289         DRM_UNLOCK();
 290
 291 #ifdef  _MULTI_DATAMODEL
 292         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 293                 drm_stats_32_t stats32;
 294                 stats32.count = (uint32_t)stats.count;
 295                 for (i = 0; i < 15; i++) {
 296                         stats32.data[i].value = stats.data[i].value;
 297                         stats32.data[i].type = stats.data[i].type;
 298                 }
 299                 DRM_COPYTO_WITH_RETURN((void *)data, &stats32,
 300                     sizeof (stats32));
 301         } else
 302 #endif
 303                 DRM_COPYTO_WITH_RETURN((void *)data, &stats, sizeof (stats));
 304
 305         return (0);
 306 }
 307
 308 #define DRM_IF_MAJOR    1
 309 #define DRM_IF_MINOR    2
 310
 311 /*ARGSUSED*/
 312 int
 313 drm_setversion(DRM_IOCTL_ARGS)
 314 {
 315         DRM_DEVICE;
 316         drm_set_version_t sv;
 317         drm_set_version_t retv;
 318         int if_version;
 319
 320         DRM_COPYFROM_WITH_RETURN(&sv, (void *)data, sizeof (sv));
 321
 322         retv.drm_di_major = DRM_IF_MAJOR;
 323         retv.drm_di_minor = DRM_IF_MINOR;
 324         retv.drm_dd_major = dev->driver->driver_major;
 325         retv.drm_dd_minor = dev->driver->driver_minor;
 326
 327         DRM_COPYTO_WITH_RETURN((void *)data, &retv, sizeof (sv));
 328
 329         if (sv.drm_di_major != -1) {
 330                 if (sv.drm_di_major != DRM_IF_MAJOR ||
 331                     sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
 332                         return (EINVAL);
 333                 if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_dd_minor);
 334                 dev->if_version = DRM_MAX(if_version, dev->if_version);
 335                 if (sv.drm_di_minor >= 1) {
 336                         /*
 337                          * Version 1.1 includes tying of DRM to specific device
 338                          */
 339                         (void) drm_set_busid(dev);
 340                 }
 341         }
 342
 343         if (sv.drm_dd_major != -1) {
 344                 if (sv.drm_dd_major != dev->driver->driver_major ||
 345                     sv.drm_dd_minor < 0 ||
 346                     sv.drm_dd_minor > dev->driver->driver_minor)
 347                         return (EINVAL);
 348         }
 349         return (0);
 350 }
 351
 352
 353 /*ARGSUSED*/
 354 int
 355 drm_noop(DRM_IOCTL_ARGS)
 356 {
 357         DRM_DEBUG("drm_noop\n");
 358         return (0);
 359 }
 360
 361 /*ARGSUSED*/
 362 int
 363 drm_version(DRM_IOCTL_ARGS)
 364 {
 365         DRM_DEVICE;
 366         drm_version_t version;
 367         size_t len;
 368
 369 #ifdef  _MULTI_DATAMODEL
 370         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 371                 drm_version_32_t version32;
 372
 373                 DRM_COPYFROM_WITH_RETURN(&version32,
 374                     (void *)data, sizeof (drm_version_32_t));
 375                 version.name_len = version32.name_len;
 376                 version.name = (char *)(uintptr_t)version32.name;
 377                 version.date_len = version32.date_len;
 378                 version.date = (char *)(uintptr_t)version32.date;
 379                 version.desc_len = version32.desc_len;
 380                 version.desc = (char *)(uintptr_t)version32.desc;
 381         } else
 382 #endif
 383                 DRM_COPYFROM_WITH_RETURN(&version, (void *)data,
 384                     sizeof (version));
 385
 386 #define DRM_COPY(name, value)                                         \
 387         len = strlen(value);                                          \
 388         if (len > name##_len) len = name##_len;                       \
 389                 name##_len = strlen(value);                                   \
 390         if (len && name) {                                            \
 391                 if (DRM_COPY_TO_USER(name, value, len))             \
 392                         return (EFAULT);                         \
 393         }
 394
 395         version.version_major = dev->driver->driver_major;
 396         version.version_minor = dev->driver->driver_minor;
 397         version.version_patchlevel = dev->driver->driver_patchlevel;
 398
 399         DRM_COPY(version.name, dev->driver->driver_name);
 400         DRM_COPY(version.date, dev->driver->driver_date);
 401         DRM_COPY(version.desc, dev->driver->driver_desc);
 402
 403 #ifdef  _MULTI_DATAMODEL
 404         if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
 405                 drm_version_32_t version32;
 406
 407                 version32.version_major = version.version_major;
 408                 version32.version_minor = version.version_minor;
 409                 version32.version_patchlevel = version.version_patchlevel;
 410                 version32.name_len = (uint32_t)version.name_len;
 411                 version32.name = (caddr32_t)(uintptr_t)version.name;
 412                 version32.date_len = (uint32_t)version.date_len;
 413                 version32.date = (caddr32_t)(uintptr_t)version.date;
 414                 version32.desc_len = (uint32_t)version.desc_len;
 415                 version32.desc = (caddr32_t)(uintptr_t)version.desc;
 416                 DRM_COPYTO_WITH_RETURN((void *)data, &version32,
 417                     sizeof (drm_version_32_t));
 418         } else
 419 #endif
 420                 DRM_COPYTO_WITH_RETURN((void *)data, &version,
 421                     sizeof (version));
 422
 423         return (0);
 424 }