Enum GasAddressSpace

pub enum GasAddressSpace {
    SystemMemory,
    SystemIO,
    PciConfigurationSpace,
    EmbeddedController,
    SMBus,
    SystemCMOS,
    PciBarTarget,
    IPMI,
    GeneralPurposeIO,
    GenericSerialBus,
    PlatformCommunicationsChannel,
    PlatformRuntimeMechanism,
    FunctionalFixedHardware,
    Other(u8),
}

A type of address space that a generic address structure can point into

Variants

SystemMemory

A physical address in main memory

SystemIO

An IO port number

PciConfigurationSpace

A register in the PCI configuration space. PCI addresses in a GAS are confined to devices on PCI Segment Group 0, bus 0.

Using this address space, address is interpreted as follows:

• Most significant word: Ignored, must be 0
• Next word: Device number on bus 0
• Next word: Function number
• Least significant word: Offset into the configuration registers (TODO: is this in bytes or registers?)

For example: Offset 0x23 of Function 2 on device 7 on bus 0 segment 0 would be represented as 0x0000 0007 0002 0023.

EmbeddedController

An embedded controller

SMBus

The system management bus

SystemCMOS

The system’s CMOS chip

PciBarTarget

A register inside an MMIO region, located by a BAR located in the PCI configuration space.

Using this address space, address is interpreted as follows:

Bits 63:56 – PCI Segment
Bits 55:48 – PCI Bus
Bits 47:43 – PCI Device
Bits 42:40 – PCI Function
Bits 39:37 – BAR Number
Bits 36:0 – Offset from BAR in DWORDs\

IPMI

The IPMI bus

GeneralPurposeIO

An address relating to GPIO

GenericSerialBus

A serial bus

PlatformCommunicationsChannel

The platform communications channel

PlatformRuntimeMechanism

The platform runtime mechanism

FunctionalFixedHardware

Functional fixed hardware

Other(u8)

An unknown or reserved value

Trait Implementations

impl Clone for GasAddressSpace

fn clone(&self) -> GasAddressSpace

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GasAddressSpace

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for GasAddressSpace

fn eq(&self, other: &GasAddressSpace) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GasAddressSpace

impl Eq for GasAddressSpace

impl StructuralPartialEq for GasAddressSpace