Struct acpi::mcfg::PciConfigRegions

pub struct PciConfigRegions<'a, A>where
    A: Allocator,{ /* private fields */ }

Describes a set of regions of physical memory used to access the PCIe configuration space. A region is created for each entry in the MCFG. Given the segment group, bus, device number, and function of a PCIe device, the physical_address method on this will give you the physical address of the start of that device function’s configuration space (each function has 4096 bytes of configuration space in PCIe).

Implementations

impl<'a> PciConfigRegions<'a, Global>

pub fn new<H>( tables: &AcpiTables<H> ) -> AcpiResult<PciConfigRegions<'a, Global>>where H: AcpiHandler,

impl<'a, A> PciConfigRegions<'a, A>where A: Allocator,

pub fn new_in<H>( tables: &AcpiTables<H>, allocator: A ) -> AcpiResult<PciConfigRegions<'a, A>>where H: AcpiHandler,

pub fn physical_address( &self, segment_group_no: u16, bus: u8, device: u8, function: u8 ) -> Option<u64>

Get the physical address of the start of the configuration space for a given PCIe device function. Returns None if there isn’t an entry in the MCFG that manages that device.

pub fn iter(&self) -> PciConfigEntryIterator<'_>

Returns an iterator providing information about the system’s present PCI busses. This is roughly equivalent to manually iterating the system’s MCFG table.