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Diffstat (limited to 'arch/powerpc/include/asm/cpufeature.h')
| -rw-r--r-- | arch/powerpc/include/asm/cpufeature.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/cpufeature.h b/arch/powerpc/include/asm/cpufeature.h new file mode 100644 index 0000000000..2dcc66225e --- /dev/null +++ b/arch/powerpc/include/asm/cpufeature.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * CPU feature definitions for module loading, used by + * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features. + * + * Copyright 2016 Alastair D'Silva, IBM Corporation. + */ + +#ifndef __ASM_POWERPC_CPUFEATURE_H +#define __ASM_POWERPC_CPUFEATURE_H + +#include <asm/cputable.h> + +/* Keep these in step with powerpc/include/asm/cputable.h */ +#define MAX_CPU_FEATURES (2 * 32) + +/* + * Currently we don't have a need for any of the feature bits defined in + * cpu_user_features. When we do, they should be defined such as: + * + * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32)) + */ + +#define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO)) +#define PPC_MODULE_FEATURE_P10 (32 + ilog2(PPC_FEATURE2_ARCH_3_1)) + +#define cpu_feature(x) (x) + +static inline bool cpu_have_feature(unsigned int num) +{ + if (num < 32) + return !!(cur_cpu_spec->cpu_user_features & 1UL << num); + else + return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32)); +} + +#endif /* __ASM_POWERPC_CPUFEATURE_H */ |