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extern crate x86;
pub use x86::current::paging::{IOAddr, PAddr, VAddr};
use crate::pci::PCIAddress;
pub trait MsrInterface {
unsafe fn write(&mut self, msr: u32, value: u64) {
x86::msr::wrmsr(msr, value);
}
unsafe fn read(&mut self, msr: u32) -> u64 {
x86::msr::rdmsr(msr)
}
}
pub trait PciInterface {
const PCI_CONF_ADDR: u16 = 0xcf8;
const PCI_CONF_DATA: u16 = 0xcfc;
fn read(&self, addr: u32) -> u32 {
unsafe {
x86::io::outl(Self::PCI_CONF_ADDR, addr);
x86::io::inl(Self::PCI_CONF_DATA)
}
}
fn write(&mut self, addr: u32, value: u32) {
unsafe {
x86::io::outl(Self::PCI_CONF_ADDR, addr);
x86::io::outl(Self::PCI_CONF_DATA, value);
}
}
}
impl PciInterface for PCIAddress {
fn read(&self, offset: u32) -> u32 {
let addr = self.addr() | offset;
unsafe {
x86::io::outl(<Self as PciInterface>::PCI_CONF_ADDR, addr);
x86::io::inl(<Self as PciInterface>::PCI_CONF_DATA)
}
}
fn write(&mut self, offset: u32, value: u32) {
let addr = self.addr() | offset;
unsafe {
x86::io::outl(<Self as PciInterface>::PCI_CONF_ADDR, addr);
x86::io::outl(<Self as PciInterface>::PCI_CONF_DATA, value);
}
}
}