1 | /* |
2 | * SPDX-License-Identifier: MIT |
3 | * |
4 | * Copyright © 2017-2018 Intel Corporation |
5 | */ |
6 | |
7 | #ifndef _INTEL_WOPCM_H_ |
8 | #define _INTEL_WOPCM_H_ |
9 | |
10 | #include <linux/types.h> |
11 | |
12 | /** |
13 | * struct intel_wopcm - Overall WOPCM info and WOPCM regions. |
14 | * @size: Size of overall WOPCM. |
15 | * @guc: GuC WOPCM Region info. |
16 | * @guc.base: GuC WOPCM base which is offset from WOPCM base. |
17 | * @guc.size: Size of the GuC WOPCM region. |
18 | */ |
19 | struct intel_wopcm { |
20 | u32 size; |
21 | struct { |
22 | u32 base; |
23 | u32 size; |
24 | } guc; |
25 | }; |
26 | |
27 | /** |
28 | * intel_wopcm_guc_base() |
29 | * @wopcm: intel_wopcm structure |
30 | * |
31 | * Returns the base of the WOPCM shadowed region. |
32 | * |
33 | * Returns: |
34 | * 0 if GuC is not present or not in use. |
35 | * Otherwise, the GuC WOPCM base. |
36 | */ |
37 | static inline u32 intel_wopcm_guc_base(struct intel_wopcm *wopcm) |
38 | { |
39 | return wopcm->guc.base; |
40 | } |
41 | |
42 | /** |
43 | * intel_wopcm_guc_size() |
44 | * @wopcm: intel_wopcm structure |
45 | * |
46 | * Returns size of the WOPCM shadowed region. |
47 | * |
48 | * Returns: |
49 | * 0 if GuC is not present or not in use. |
50 | * Otherwise, the GuC WOPCM size. |
51 | */ |
52 | static inline u32 intel_wopcm_guc_size(struct intel_wopcm *wopcm) |
53 | { |
54 | return wopcm->guc.size; |
55 | } |
56 | |
57 | void intel_wopcm_init_early(struct intel_wopcm *wopcm); |
58 | void intel_wopcm_init(struct intel_wopcm *wopcm); |
59 | |
60 | #endif |
61 | |