1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * CPU feature definitions for module loading, used by
4 * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
5 *
6 * Copyright 2016 Alastair D'Silva, IBM Corporation.
7 */
8
9 #ifndef __ASM_POWERPC_CPUFEATURE_H
10 #define __ASM_POWERPC_CPUFEATURE_H
11
12 #include <asm/cputable.h>
13
14 /* Keep these in step with powerpc/include/asm/cputable.h */
15 #define MAX_CPU_FEATURES (2 * 32)
16
17 /*
18 * Currently we don't have a need for any of the feature bits defined in
19 * cpu_user_features. When we do, they should be defined such as:
20 *
21 * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
22 */
23
24 #define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
25 #define PPC_MODULE_FEATURE_P10 (32 + ilog2(PPC_FEATURE2_ARCH_3_1))
26
27 #define cpu_feature(x) (x)
28
29 static inline bool cpu_have_feature(unsigned int num)
30 {
31 if (num < 32)
32 return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
33 else
34 return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
35 }
36
37 #endif /* __ASM_POWERPC_CPUFEATURE_H */
38
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