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 */
41