1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <linux/types.h> 3 #include <linux/export.h> 4 #include <asm/cpu.h> 5 6 unsigned int x86_family(unsigned int sig) 7 { 8 unsigned int x86; 9 10 x86 = (sig >> 8) & 0xf; 11 12 if (x86 == 0xf) 13 x86 += (sig >> 20) & 0xff; 14 15 return x86; 16 } 17 EXPORT_SYMBOL_GPL(x86_family); 18 19 unsigned int x86_model(unsigned int sig) 20 { 21 unsigned int fam, model; 22 23 fam = x86_family(sig); 24 25 model = (sig >> 4) & 0xf; 26 27 if (fam >= 0x6) 28 model += ((sig >> 16) & 0xf) << 4; 29 30 return model; 31 } 32 EXPORT_SYMBOL_GPL(x86_model); 33 34 unsigned int x86_stepping(unsigned int sig) 35 { 36 return sig & 0xf; 37 } 38 EXPORT_SYMBOL_GPL(x86_stepping); 39