Allow userspace to handle IRQs (WIP). Create basic keyboard handler

drivers/ps2d/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "ps2d"
+version = "0.1.0"
+
+[dependencies.syscall]
+path = "../../syscall/"

drivers/ps2d/src/main.rs

@@ -0,0 +1,59 @@
+#![feature(asm)]
+
+extern crate syscall;
+
+use std::fs::File;
+use std::io::{Read, Write};
+use std::thread;
+
+use syscall::iopl;
+
+fn main() {
+    if true {
+        unsafe {
+            iopl(3).expect("pskbd: failed to get I/O permission");
+            asm!("cli" :::: "intel", "volatile");
+        }
+
+        let mut file = File::open("irq:1").expect("pskbd: failed to open irq:1");
+
+        println!("pskbd: Reading keyboard IRQs");
+
+        loop {
+            let mut irqs = [0; 8];
+            file.read(&mut irqs).expect("pskbd: failed to read irq:1");
+
+            let data: u8;
+            unsafe {
+                asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
+            }
+
+            println!("pskbd: IRQ {}: {:X}", unsafe { *(irqs.as_ptr() as *const usize) }, data);
+
+            file.write(&irqs).expect("pskbd: failed to write irq:1");
+        }
+    } else {
+        unsafe {
+            iopl(3).expect("psmsd: failed to get I/O permission");
+            asm!("cli" :::: "intel", "volatile");
+        }
+
+        let mut file = File::open("irq:12").expect("psmsd: failed to open irq:12");
+
+        println!("psmsd: Reading mouse IRQs");
+
+        loop {
+            let mut count = [0; 8];
+            file.read(&mut count).expect("psmsd: failed to read irq:12");
+
+            let data: u8;
+            unsafe {
+                asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
+            }
+
+            println!("psmsd: IRQ: {:X}", data);
+
+            file.write(&count).expect("psmsd: failed to write irq:12");
+        }
+    }
+}