diff options
Diffstat (limited to 'perl-install/cpufreq.pm')
| -rw-r--r-- | perl-install/cpufreq.pm | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/perl-install/cpufreq.pm b/perl-install/cpufreq.pm new file mode 100644 index 000000000..5468e45ae --- /dev/null +++ b/perl-install/cpufreq.pm @@ -0,0 +1,167 @@ +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" && + $_->{'cpu family'} == 15 && + ($_->{'power management'} =~ /\bfid\b/ || has_flag($_, 'fid')); # frequency ID control + } get_cpus(); +} + +sub probe_longhaul() { + any { + get_vendor($_) eq "Centaur" && + $_->{'cpu family'} == 6 && + member($_->{model}, 6, 7, 8, 9); + } get_cpus(); +} + +sub probe_longrun() { + any { + get_vendor($_) eq "Transmeta" && + has_flag($_, 'longrun'); + } get_cpus(); +} + +my @modules = ( + # probe centrino first, it will get detected on ICH chipset and + # speedstep-ich doesn't work with it + [ "speedstep-centrino", \&probe_centrino ], + [ "acpi-cpufreq", \&probe_acpi_cpufreq ], + # try to find cpufreq compliant northbridge + [ "speedstep-ich", \&probe_ich ], + [ "speedstep-smi", \&probe_smi ], + [ "cpufreq-nforce2", \&probe_nforce2 ], + [ "gsx-suspmod", \&probe_gsx ], + # try to find a cpufreq compliant processor + [ "p4-clockmod", \&probe_p4 ], + [ "powernow-k6", \&probe_powernow_k6 ], + [ "powernow-k7", \&probe_powernow_k7 ], + [ "powernow-k8", \&probe_powernow_k8 ], + [ "longhaul", \&probe_longhaul ], + [ "longrun", \&probe_longrun ], +); + +sub find_driver() { + my $m = find { $_->[1]->() } @modules; + $m && $m->[0]; +} + +my @governor_modules = map { "cpufreq_$_" } qw(performance powersave conservative ondemand); + +sub get_modules() { + my $module; + if (probe_powerpc() || ($module = find_driver())) { + return if_($module, $module), @governor_modules; + } + (); +} + +1; |