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
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