1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <linux/types.h> 3 #include <linux/export.h> 4 5 #include <asm/cpu.h> 6 #include <asm/cpuid/leaf_types.h> 7 8 static unsigned int __x86_family(unsigned int base_fam, unsigned int ext_fam) 9 { 10 if (base_fam == 0xf) 11 base_fam += ext_fam; 12 13 return base_fam; 14 } 15 16 static unsigned int __x86_model(unsigned int family, unsigned int base_model, 17 unsigned int ext_model) 18 { 19 if (family >= 0x6) 20 base_model |= ext_model << 4; 21 22 return base_model; 23 } 24 25 unsigned int x86_family(unsigned int sig) 26 { 27 return __x86_family((sig >> 8) & 0xf, (sig >> 20) & 0xff); 28 } 29 EXPORT_SYMBOL_GPL(x86_family); 30 31 unsigned int x86_model(unsigned int sig) 32 { 33 return __x86_model(x86_family(sig), (sig >> 4) & 0xf, (sig >> 16) & 0xf); 34 } 35 EXPORT_SYMBOL_GPL(x86_model); 36 37 unsigned int x86_stepping(unsigned int sig) 38 { 39 return sig & 0xf; 40 } 41 EXPORT_SYMBOL_GPL(x86_stepping); 42 43 unsigned int cpuid_family(const struct leaf_0x1_0 *l) 44 { 45 return __x86_family(l->base_family_id, l->ext_family); 46 } 47 48 unsigned int cpuid_model(const struct leaf_0x1_0 *l) 49 { 50 return __x86_model(cpuid_family(l), l->base_model, l->ext_model); 51 } 52