// SPDX-License-Identifier: GPL-2.0-only
#include <linux/types.h>
#include <linux/export.h>
#include <asm/cpu.h>

unsigned int x86_family(unsigned int sig)
{
        unsigned int x86;

        x86 = (sig >> 8) & 0xf;

        if (x86 == 0xf)
                x86 += (sig >> 20) & 0xff;

        return x86;
}
EXPORT_SYMBOL_GPL(x86_family);

unsigned int x86_model(unsigned int sig)
{
        unsigned int fam, model;

        fam = x86_family(sig);

        model = (sig >> 4) & 0xf;

        if (fam >= 0x6)
                model += ((sig >> 16) & 0xf) << 4;

        return model;
}
EXPORT_SYMBOL_GPL(x86_model);

unsigned int x86_stepping(unsigned int sig)
{
        return sig & 0xf;
}
EXPORT_SYMBOL_GPL(x86_stepping);