1 | // SPDX-License-Identifier: GPL-2.0-only |
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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 |