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 #ifdef HAVE_LIBDRM 27 28 #include <stdlib.h> 29 #include <xf86drm.h> 30 #include <nouveau_drm.h> 31 32 static int 33 nouveau_chipset(int fd) 34 { 35 struct drm_nouveau_getparam gp = { NOUVEAU_GETPARAM_CHIPSET_ID, 0 }; 36 int ret; 37 38 ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &gp, sizeof(gp)); 39 if (ret) 40 return -1; 41 42 return gp.value; 43 } 44 45 int 46 is_nouveau_vieux(int fd) 47 { 48 int chipset = nouveau_chipset(fd); 49 return (chipset > 0 && chipset < 0x30) || 50 (chipset < 0x40 && getenv("NOUVEAU_VIEUX") != NULL); 51 } 52 53 #else 54 55 int is_nouveau_vieux(int fd) { return 0; } 56 57 #endif 58
