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