Commit | Line | Data |
---|---|---|
4a120276 AS |
1 | /* |
2 | * CPU feature definitions for module loading, used by | |
3 | * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features. | |
4 | * | |
5 | * Copyright 2016 Alastair D'Silva, IBM Corporation. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef __ASM_POWERPC_CPUFEATURE_H | |
14 | #define __ASM_POWERPC_CPUFEATURE_H | |
15 | ||
16 | #include <asm/cputable.h> | |
17 | ||
18 | /* Keep these in step with powerpc/include/asm/cputable.h */ | |
19 | #define MAX_CPU_FEATURES (2 * 32) | |
20 | ||
21 | /* | |
22 | * Currently we don't have a need for any of the feature bits defined in | |
23 | * cpu_user_features. When we do, they should be defined such as: | |
24 | * | |
25 | * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32)) | |
26 | */ | |
27 | ||
28 | #define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO)) | |
29 | ||
30 | #define cpu_feature(x) (x) | |
31 | ||
32 | static inline bool cpu_have_feature(unsigned int num) | |
33 | { | |
34 | if (num < 32) | |
35 | return !!(cur_cpu_spec->cpu_user_features & 1UL << num); | |
36 | else | |
37 | return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32)); | |
38 | } | |
39 | ||
40 | #endif /* __ASM_POWERPC_CPUFEATURE_H */ |