1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * CPU feature definitions for module loading, used by 4*4882a593Smuzhiyun * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright 2016 Alastair D'Silva, IBM Corporation. 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef __ASM_POWERPC_CPUFEATURE_H 10*4882a593Smuzhiyun #define __ASM_POWERPC_CPUFEATURE_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <asm/cputable.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* Keep these in step with powerpc/include/asm/cputable.h */ 15*4882a593Smuzhiyun #define MAX_CPU_FEATURES (2 * 32) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* 18*4882a593Smuzhiyun * Currently we don't have a need for any of the feature bits defined in 19*4882a593Smuzhiyun * cpu_user_features. When we do, they should be defined such as: 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32)) 22*4882a593Smuzhiyun */ 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO)) 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #define cpu_feature(x) (x) 27*4882a593Smuzhiyun cpu_have_feature(unsigned int num)28*4882a593Smuzhiyunstatic inline bool cpu_have_feature(unsigned int num) 29*4882a593Smuzhiyun { 30*4882a593Smuzhiyun if (num < 32) 31*4882a593Smuzhiyun return !!(cur_cpu_spec->cpu_user_features & 1UL << num); 32*4882a593Smuzhiyun else 33*4882a593Smuzhiyun return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32)); 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #endif /* __ASM_POWERPC_CPUFEATURE_H */ 37