IABSD.fr/xenocara/lib/mesa/src/loader/pci_id_driver_map.c

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• Author : jsg
  Date : 2016-12-11 08:25:29
  Hash : a53e30e0
  Message : Import Mesa 13.0.2

• lib/mesa/src/loader/pci_id_driver_map.c

• /*
   * Copyright 2014 Ilia Mirkin
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  int is_nouveau_vieux(int fd);
  
  #ifdef HAVE_LIBDRM
  
  #include <stdlib.h>
  #include <xf86drm.h>
  #include <nouveau_drm.h>
  
  static int
  nouveau_chipset(int fd)
  {
     struct drm_nouveau_getparam gp = { NOUVEAU_GETPARAM_CHIPSET_ID, 0 };
     int ret;
  
     ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &gp, sizeof(gp));
     if (ret)
        return -1;
  
     return gp.value;
  }
  
  int
  is_nouveau_vieux(int fd)
  {
     int chipset = nouveau_chipset(fd);
     return (chipset > 0 && chipset < 0x30) ||
        (chipset < 0x40 && getenv("NOUVEAU_VIEUX") != NULL);
  }
  
  #else
  
  int is_nouveau_vieux(int fd) { return 0; }
  
  #endif