1 pub mod x86_64; 2 #[cfg(target_arch = "x86_64")] 3 pub use self::x86_64::*; //公开x86_64架构下的函数，使外界接口统一 4 5 use crate::{ 6 driver::pci::pci::{BusDeviceFunction, PciAddr, PciError, PciRoot, SegmentGroupNumber}, 7 mm::PhysAddr, 8 }; 9 10 /// TraitPciArch Pci架构相关函数，任何架构都应独立实现trait里的函数 11 pub trait TraitPciArch { 12 /// @brief 读取寄存器值，x86_64架构通过读取两个特定io端口实现 13 /// @param bus_device_function 设备的唯一标识符 14 /// @param offset 寄存器偏移值 15 /// @return 读取到的值 16 fn read_config(bus_device_function: &BusDeviceFunction, offset: u8) -> u32; 17 /// @brief 写入寄存器值，x86_64架构通过读取两个特定io端口实现 18 /// @param bus_device_function 设备的唯一标识符 19 /// @param offset 寄存器偏移值 20 /// @param data 要写入的值 21 fn write_config(bus_device_function: &BusDeviceFunction, offset: u8, data: u32); 22 /// @brief PCI域地址到存储器域地址的转换,x86_64架构为一一对应 23 /// @param address PCI域地址 24 /// @return usize 转换结果 25 fn address_pci_to_physical(pci_address: PciAddr) -> PhysAddr; 26 /// @brief 获取Segement的root地址,x86_64架构为acpi mcfg表中读取 27 /// @param segement 组id 28 /// @return Result<PciRoot, PciError> 转换结果或出错原因 29 fn ecam_root(segement: SegmentGroupNumber) -> Result<PciRoot, PciError>; 30 } 31