Struct PciRoot

pub struct PciRoot {
    pub physical_address_base: u64,
    pub mmio_base: Option<*mut u32>,
    pub segement_group_number: SegmentGroupNumber,
    pub bus_begin: u8,
    pub bus_end: u8,
}

代表一个PCI segement greoup.

Fields

physical_address_base: u64

mmio_base: Option<*mut u32>

segement_group_number: SegmentGroupNumber

bus_begin: u8

bus_end: u8

Implementations

impl PciRoot

pub fn new(segment_group_number: SegmentGroupNumber) -> Result<Self, PciError>

@brief 初始化结构体，获取ecam root所在物理地址后map到虚拟地址，再将该虚拟地址加入mmio_base变量 @return 成功返回结果，错误返回错误类型

pub fn read_config( &self, bus_device_function: BusDeviceFunction, register_offset: u16, ) -> u32

@brief 通过bus_device_function和offset读取相应位置寄存器的值（32位） @param bus_device_function 在同一个group中pci设备的唯一标识符 @param register_offset 寄存器在设备中的offset @return u32 寄存器读值结果

pub fn write_config( &mut self, bus_device_function: BusDeviceFunction, register_offset: u16, data: u32, )

@brief 通过bus_device_function和offset写入相应位置寄存器值（32位） @param bus_device_function 在同一个group中pci设备的唯一标识符 @param register_offset 寄存器在设备中的offset @param data 要写入的值

pub fn external_capabilities( &self, bus_device_function: BusDeviceFunction, ) -> ExternalCapabilityIterator<'_>

@brief 返回迭代器，遍历pcie设备的external_capabilities

Trait Implementations

impl Clone for PciRoot

fn clone(&self) -> PciRoot

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PciRoot

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

Formats the value using the given formatter.

impl Display for PciRoot

实现PciRoot的Display trait，自定义输出

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

Formats the value using the given formatter.

impl PartialEq for PciRoot

fn eq(&self, other: &PciRoot) -> 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 PciRoot

impl Send for PciRoot

线程间共享需要，该结构体只需要在初始化时写入数据，无需读写锁保证线程安全

impl StructuralPartialEq for PciRoot

impl Sync for PciRoot