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
24 static u64
nvif_userc361_time(struct nvif_user * user)25 nvif_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
37 static void
nvif_userc361_doorbell(struct nvif_user * user,u32 token)38 nvif_userc361_doorbell(struct nvif_user *user, u32 token)
39 {
40 nvif_wr32(&user->object, 0x90, token);
41 }
42
43 const struct nvif_user_func
44 nvif_userc361 = {
45 .doorbell = nvif_userc361_doorbell,
46 .time = nvif_userc361_time,
47 };
48