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 |
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 |
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 | |