Struct AcpiGenericAddress

pub struct AcpiGenericAddress {
    pub space_id: GasAddressSpace,
    pub bit_width: u8,
    pub bit_offset: u8,
    pub access_width: u8,
    pub address: u64,
}

GAS - Generic Address Structure

This struct represents an address in some address space - that could be main memory, port I/O, PCI configuration space, etc.

Fields

space_id: GasAddressSpace

What address space to access for this value

bit_width: u8

The size in bits of the data pointed to by the address

bit_offset: u8

The offset in bits of the data from the address

access_width: u8

A value representing the access size needed to read data.

The value in this register does not match to number of bytes, rather there is a mapping as follows:

• 1 = Byte access
• 2 = Word access (2 bytes)
• 3 = DWord access (4 bytes)
• 4 = QWord access (8 bytes)

The AcpiGenericAddress::ACCESS_WIDTH_* consts can be used to reference these values.

This field is not represented by an enum because some values of space_id could use a different system.

address: u64

The address where the data is stored

Implementations

impl AcpiGenericAddress

pub const ACCESS_WIDTH_1_BYTE: u8 = 1u8

The value of access_width corresponding to a byte access

pub const ACCESS_WIDTH_2_BYTES: u8 = 2u8

The value of access_width corresponding to a word access (2 bytes)

pub const ACCESS_WIDTH_4_BYTES: u8 = 3u8

The value of access_width corresponding to a double word access (4 bytes)

pub const ACCESS_WIDTH_8_BYTES: u8 = 4u8

The value of access_width corresponding to a quad word access (8 bytes)

Trait Implementations

impl Clone for AcpiGenericAddress

fn clone(&self) -> AcpiGenericAddress

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AcpiGenericAddress

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

Formats the value using the given formatter.

impl Copy for AcpiGenericAddress