1// SPDX-License-Identifier: GPL-2.0-only
2#include <linux/types.h>
3#include <linux/export.h>
4#include <asm/cpu.h>
5
6unsigned 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}
17EXPORT_SYMBOL_GPL(x86_family);
18
19unsigned 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}
32EXPORT_SYMBOL_GPL(x86_model);
33
34unsigned int x86_stepping(unsigned int sig)
35{
36 return sig & 0xf;
37}
38EXPORT_SYMBOL_GPL(x86_stepping);
39