1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/types.h>
3 #include <linux/export.h>
4 #include <asm/cpu.h>
5 
x86_family(unsigned int sig)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 
x86_model(unsigned int sig)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 
x86_stepping(unsigned int sig)34 unsigned int x86_stepping(unsigned int sig)
35 {
36 	return sig & 0xf;
37 }
38 EXPORT_SYMBOL_GPL(x86_stepping);
39