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package cpufreq;

use common;
use detect_devices;

my %vendor_ids = (
    GenuineIntel => "Intel",
    AuthenticAMD => "AMD",
    CyrixInstead => "Cyrix",
    "Geode by NSC" => "NSC",
    TransmetaCPU => "Transmeta",
    GenuineTMx86 => "Transmeta",
    CentaurHauls => "Centaur",
);

sub get_vendor {
    my ($cpu) = @_;
    $vendor_ids{$cpu->{vendor_id}};
}

sub has_flag {
    my ($cpu, $flag) = @_;
    $cpu->{flags} =~ /\b$flag\b/;
}

my @cpus;
sub get_cpus() {
    @cpus ? @cpus : @cpus = detect_devices::getCPUs();
}

my @pci;
sub pci_probe() {
    @pci ? @pci : @pci = detect_devices::pci_probe();
}

sub find_pci_device {
    my (@devices) = @_;
    any { my $dev = $_; any { $_->{vendor} == $dev->[0] && $_->{id} == $dev->[1] } pci_probe() } @devices;
}

sub probe_acpi_cpufreq() {
    any {
        get_vendor($_) eq "Intel" &&
        $_->{'cpu family'} == 6 &&
        (
            has_flag($_, 'est') ||
            $_->{model} == 11
        );
    } get_cpus();
}

# see cpuid.c (from cpuid package) for a list of family/models
sub probe_centrino() {
    any {
        get_vendor($_) eq "Intel" &&
        has_flag($_, 'est') && (
            ($_->{'cpu family'} == 6 && $_->{model} == 9 && $_->{stepping} == 5 &&
             $_->{'model name'} =~ /^Intel\(R\) Pentium\(R\) M processor ( 900|1[0-7]00)MHz$/) ||
            ($_->{'cpu family'} == 6 && $_->{model} == 13 && member($_->{stepping}, 1, 2, 6)) ||
            ($_->{'cpu family'} == 15 && $_->{model} == 3 && $_->{stepping} == 4) ||
            ($_->{'cpu family'} == 15 && $_->{model} == 4 && $_->{stepping} == 1)
        );
    } get_cpus();
}

sub probe_ich() { find_pci_device([ 0x8086, 0x244c ], [ 0x8086, 0x24cc ], [ 0x8086, 0x248c ]) }

sub probe_smi() { find_pci_device([ 0x8086, 0x7190 ]) }

sub probe_nforce2() { find_pci_device([ 0x10de, 0x01e0 ]) }

sub probe_gsx() {
    (any { member(get_vendor($_), "Cyrix", "NSC") } get_cpus()) &&
    find_pci_device([ 0x1078, 0x0100 ], [ 0x1078, 0x0002 ], [ 0x1078, 0x0000 ]);
}

sub probe_powerpc() {
    arch() =~ /ppc/ && any {
        member($_->{motherboard}, ('PowerBook3,4', 'PowerBook3,5', 'PowerBook4,1', 'PowerBook3,2', 'MacRISC3')) &&
        # Kernel contains a special case for the supported 750FX,
        # not sure if the cpu name can be used, so use same test as kernel
        first($_->{revision} =~ /\bpvr\s+(\d+)\b/) == 7000;
    } get_cpus();
}

sub probe_p4() {
    any {
        get_vendor($_) eq "Intel" && (
            $_->{'cpu family'} == 15 ||
            ($_->{'cpu family'} == 6 && !has_flag($_, 'est') && member($_->{model}, 9, 13, 14, 15))
        );
    } get_cpus();
}

sub probe_powernow_k6() {
    any {
        get_vendor($_) eq "AMD" &&
        $_->{'cpu family'} == 5 &&
        member($_->{model}, 12, 13);
    } get_cpus();
}

sub probe_powernow_k7() {
    any {
        get_vendor($_) eq "AMD" &&
        $_->{'cpu family'} == 6;
    } get_cpus();
}

sub probe_powernow_k8() {
    any {
        get_vendor($_) eq "AMD" &&
        $_->{'cpu family'} == 15 &&


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