#[derive(Debug)]
pub enum PciClass {
    Legacy,
    Storage,
    Network,
    Display,
    Multimedia,
    Memory,
    Bridge,
    SimpleComms,
    Peripheral,
    Input,
    Docking,
    Processor,
    SerialBus,
    Wireless,
    IntelligentIo,
    SatelliteComms,
    Cryptography,
    SignalProc,
    Reserved(u8),
    Unknown
}

impl From<u8> for PciClass {
    fn from(class: u8) -> PciClass {
        match class {
            0x00 => PciClass::Legacy,
            0x01 => PciClass::Storage,
            0x02 => PciClass::Network,
            0x03 => PciClass::Display,
            0x04 => PciClass::Multimedia,
            0x05 => PciClass::Memory,
            0x06 => PciClass::Bridge,
            0x07 => PciClass::SimpleComms,
            0x08 => PciClass::Peripheral,
            0x09 => PciClass::Input,
            0x0A => PciClass::Docking,
            0x0B => PciClass::Processor,
            0x0C => PciClass::SerialBus,
            0x0D => PciClass::Wireless,
            0x0E => PciClass::IntelligentIo,
            0x0F => PciClass::SatelliteComms,
            0x10 => PciClass::Cryptography,
            0x11 => PciClass::SignalProc,
            0xFF => PciClass::Unknown,
            reserved => PciClass::Reserved(reserved)
        }
    }
}