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41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
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/*
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* CPU feature definitions for module loading, used by
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* module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
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*
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* Copyright 2016 Alastair D'Silva, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef __ASM_POWERPC_CPUFEATURE_H
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#define __ASM_POWERPC_CPUFEATURE_H
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#include <asm/cputable.h>
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/* Keep these in step with powerpc/include/asm/cputable.h */
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#define MAX_CPU_FEATURES (2 * 32)
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/*
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* Currently we don't have a need for any of the feature bits defined in
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* cpu_user_features. When we do, they should be defined such as:
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*
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* #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
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*/
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#define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
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#define cpu_feature(x) (x)
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static inline bool cpu_have_feature(unsigned int num)
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{
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if (num < 32)
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return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
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else
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return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
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}
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#endif /* __ASM_POWERPC_CPUFEATURE_H */
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