#![feature(
core_intrinsics,
allocator_api,
nonnull_slice_from_raw_parts
)]
#![cfg_attr(unix, feature(libc))]
#![no_std]
#[cfg_attr(unix, macro_use)]
#[cfg(unix)]
extern crate std;
extern crate alloc;
#[cfg(unix)]
extern crate byteorder;
#[cfg(unix)]
extern crate libc;
#[cfg_attr(unix, macro_use(matches, assert_matches))]
#[cfg(unix)]
extern crate matches;
#[cfg(unix)]
extern crate mmap;
#[cfg(target_os = "barrelfish")]
extern crate libbarrelfish;
extern crate x86;
pub mod devq;
pub mod iomem;
pub mod pci;
#[cfg(unix)]
pub mod timedops;
pub mod net;
#[cfg(target_os = "barrelfish")]
mod barrelfish;
#[cfg(target_os = "linux")]
mod linux;
#[cfg(target_os = "barrelfish")]
pub use barrelfish::*;
#[cfg(target_os = "linux")]
pub use linux::*;
#[derive(Debug, Eq, PartialEq, Clone, Copy)]
pub enum DriverState {
Uninitialized,
Initialized,
Attached(usize),
Detached,
Destroyed,
}
pub trait DriverControl: Sized {
fn init(&mut self) {
assert!(self.state() == DriverState::Uninitialized);
self.set_state(DriverState::Initialized);
}
fn attach(&mut self) {
#[cfg(unix)]
assert!(
self.state() == DriverState::Initialized
|| self.state() == DriverState::Detached
|| matches!(self.state(), DriverState::Attached(_))
);
self.set_state(DriverState::Attached(0));
}
fn detach(&mut self) {
#[cfg(unix)]
assert!(matches!(self.state(), DriverState::Attached(_)));
self.set_state(DriverState::Detached);
}
fn set_sleep_level(&mut self, level: usize) {
#[cfg(unix)]
assert_matches!(self.state(), DriverState::Attached(_));
self.set_state(DriverState::Attached(level));
}
fn destroy(mut self) {
#[cfg(unix)]
assert!(matches!(self.state(), DriverState::Attached(_)));
self.set_state(DriverState::Destroyed);
}
fn state(&self) -> DriverState;
fn set_state(&mut self, ds: DriverState);
}
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);
}
}
}