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  1. /*
  2.  * Copyright 2014 Ilia Mirkin
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21.  * SOFTWARE.
  22.  */
  23.  
  24. int is_nouveau_vieux(int fd);
  25.  
  26. #ifndef __NOT_HAVE_DRM_H
  27.  
  28. #include <xf86drm.h>
  29. #include <nouveau_drm.h>
  30.  
  31. static int
  32. nouveau_chipset(int fd)
  33. {
  34.    struct drm_nouveau_getparam gp = { NOUVEAU_GETPARAM_CHIPSET_ID, 0 };
  35.    int ret;
  36.  
  37.    ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &gp, sizeof(gp));
  38.    if (ret)
  39.       return -1;
  40.  
  41.    return gp.value;
  42. }
  43.  
  44. int
  45. is_nouveau_vieux(int fd)
  46. {
  47.    int chipset = nouveau_chipset(fd);
  48.    return chipset > 0 && chipset < 0x30;
  49. }
  50.  
  51. #else
  52.  
  53. int is_nouveau_vieux(int fd) { return 0; }
  54.  
  55. #endif
  56.