1 use crate::{ 2 driver::pci::pci::{BusDeviceFunction, PciAddr, PciError, PciRoot, SegmentGroupNumber}, 3 mm::PhysAddr, 4 }; 5 6 #[cfg(target_arch = "x86_64")] 7 pub mod x86_64; 8 #[cfg(target_arch = "x86_64")] 9 pub use self::x86_64::*; // 公开x86_64架构下的函数，使外界接口统一 10 11 #[cfg(target_arch = "riscv64")] 12 pub mod riscv64; 13 #[cfg(target_arch = "riscv64")] 14 pub use self::riscv64::*; // 公开riscv64架构下的函数，使外界接口统一 15 16 pub mod io; 17 18 /// TraitPciArch Pci架构相关函数，任何架构都应独立实现trait里的函数 19 pub trait TraitPciArch { 20 /// @brief 读取寄存器值，x86_64架构通过读取两个特定io端口实现 21 /// @param bus_device_function 设备的唯一标识符 22 /// @param offset 寄存器偏移值 23 /// @return 读取到的值 24 fn read_config(bus_device_function: &BusDeviceFunction, offset: u8) -> u32; 25 /// @brief 写入寄存器值，x86_64架构通过读取两个特定io端口实现 26 /// @param bus_device_function 设备的唯一标识符 27 /// @param offset 寄存器偏移值 28 /// @param data 要写入的值 29 fn write_config(bus_device_function: &BusDeviceFunction, offset: u8, data: u32); 30 /// @brief PCI域地址到存储器域地址的转换,x86_64架构为一一对应 31 /// @param address PCI域地址 32 /// @return usize 转换结果 33 fn address_pci_to_physical(pci_address: PciAddr) -> PhysAddr; 34 /// @brief 获取Segement的root地址,x86_64架构为acpi mcfg表中读取 35 /// @param segement 组id 36 /// @return Result<PciRoot, PciError> 转换结果或出错原因 37 fn ecam_root(segement: SegmentGroupNumber) -> Result<PciRoot, PciError>; 38 } 39