userc361.c (1612B)
1/* 2 * Copyright 2018 Red Hat Inc. 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 shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22#include <nvif/user.h> 23 24static u64 25nvif_userc361_time(struct nvif_user *user) 26{ 27 u32 hi, lo; 28 29 do { 30 hi = nvif_rd32(&user->object, 0x084); 31 lo = nvif_rd32(&user->object, 0x080); 32 } while (hi != nvif_rd32(&user->object, 0x084)); 33 34 return ((u64)hi << 32 | lo); 35} 36 37static void 38nvif_userc361_doorbell(struct nvif_user *user, u32 token) 39{ 40 nvif_wr32(&user->object, 0x90, token); 41} 42 43const struct nvif_user_func 44nvif_userc361 = { 45 .doorbell = nvif_userc361_doorbell, 46 .time = nvif_userc361_time, 47};