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Move PS/2 driver to userspace

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This commit is contained in:
Jeremy Soller 2016-09-19 17:19:49 -06:00
parent c957c2a105
commit 0b3be623fc
14 changed files with 178 additions and 173 deletions
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71
drivers/ps2d/src/main.rs
View file

@ -1,77 +1,42 @@
#![feature(asm)]
#[macro_use]
extern crate bitflags;
extern crate io;
extern crate syscall;
use std::fs::File;
use std::io::{Read, Write};
use std::mem;
use std::thread;
use syscall::iopl;
mod controller;
mod keyboard;
mod keymap;
fn keyboard() {
let mut file = File::open("irq:1").expect("pskbd: failed to open irq:1");
loop {
let mut irqs = [0; 8];
if file.read(&mut irqs).expect("pskbd: failed to read irq:1") >= mem::size_of::<usize>() {
let data: u8;
unsafe {
asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
}
let (scancode, pressed) = if data >= 0x80 {
(data - 0x80, false)
} else {
(data, true)
};
println!("pskbd: IRQ {}: {:X}: {:X}: {}: {}", unsafe { *(irqs.as_ptr() as *const usize) }, data, scancode, keymap::get_char(scancode), pressed);
file.write(&irqs).expect("pskbd: failed to write irq:1");
} else {
thread::yield_now();
}
}
}
fn mouse() {
let mut file = File::open("irq:12").expect("psmsd: failed to open irq:12");
loop {
let mut irqs = [0; 8];
if file.read(&mut irqs).expect("psmsd: failed to read irq:12") >= mem::size_of::<usize>() {
let data: u8;
unsafe {
asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
}
println!("psmsd: IRQ {}: {:X}", unsafe { *(irqs.as_ptr() as *const usize) }, data);
file.write(&irqs).expect("psmsd: failed to write irq:12");
} else {
thread::yield_now();
}
}
}
mod mouse;
fn main() {
unsafe {
iopl(3).expect("ps2d: failed to get I/O permission");
asm!("cli" :::: "intel", "volatile");
}
let extra_packet = controller::Ps2::new().init();
thread::spawn(|| {
unsafe {
iopl(3).expect("pskbd: failed to get I/O permission");
iopl(3).expect("ps2d: failed to get I/O permission");
asm!("cli" :::: "intel", "volatile");
}
keyboard();
keyboard::keyboard();
});
thread::spawn(|| {
thread::spawn(move || {
unsafe {
iopl(3).expect("psmsd: failed to get I/O permission");
iopl(3).expect("ps2d: failed to get I/O permission");
asm!("cli" :::: "intel", "volatile");
}
mouse();
mouse::mouse(extra_packet);
});
}