Move serial driver to arch::x86_64::dev::serial

kernel/Cargo.toml

@@ -12,6 +12,13 @@ spin = "0.9.8"
 pic8259 = "0.11.0"
 pc-keyboard = "0.8.0"
 libm = { version = "0.1.0", path = "../libm" }
+crossbeam = { version = "0.8.4", default-features = false, features = [
+    # "alloc",
+    "crossbeam-queue",
+] }
+futures-util = { version = "0.3.31", default-features = false, features = [
+    # "alloc",
+] }
 
 [build-dependencies]
 cc = "1.2.14"

kernel/src/arch/x86_64/dev/mod.rs

@@ -1 +1,2 @@
 pub mod pic;
+pub mod serial;

kernel/src/arch/x86_64/dev/serial.rs

@@ -8,7 +8,7 @@ use x86_64::instructions::interrupts;
 
 #[macro_export]
 macro_rules! serial_print {
-    ($($arg:tt)*) => ($crate::io::serial::_serial_write(format_args!($($arg)*)));
+    ($($arg:tt)*) => ($crate::arch::x86_64::dev::serial::_serial_write(format_args!($($arg)*)));
 }
 
 #[macro_export]

kernel/src/arch/x86_64/memmap.rs

@@ -1,5 +1,4 @@
 //! Sets up a memory map using Limine.
-
 use limine::{
     request::{HhdmRequest, KernelAddressRequest, MemoryMapRequest},
     response::MemoryMapResponse,

kernel/src/io/keyboard.rs

@@ -1,32 +1,36 @@
-/* use core::{
+use core::{
     pin::Pin,
     task::{Context, Poll},
 };
 
+use crossbeam::queue::ArrayQueue;
+use futures_util::{Stream, StreamExt, task::AtomicWaker};
 use pc_keyboard::{
     DecodedKey, HandleControl, KeyCode, Keyboard, ScancodeSet1,
     layouts::{self, Uk105Key},
 };
 use spin::{Lazy, Mutex, Once};
 
-// static KBD_QUEUE: Once<ArrayQueue<u8>> = Once::new();
-// static WAKER: AtomicWaker = AtomicWaker::new();
+static KBD_QUEUE: Once<ArrayQueue<u8>> = Once::new();
+static WAKER: AtomicWaker = AtomicWaker::new();
 
-pub static KEYBOARD: Lazy<Mutex<Keyboard<Uk105Key, ScancodeSet1>>> = Lazy::new(|| {
-    Mutex::new(Keyboard::new(
-        ScancodeSet1::new(),
-        // TODO: Expose an API to change the default KB layout.
-        layouts::Uk105Key,
-        HandleControl::Ignore,
-    ))
-});
+pub static KEYBOARD: Lazy<Mutex<Keyboard<Uk105Key, ScancodeSet1>>> =
+    Lazy::new(|| {
+        Mutex::new(Keyboard::new(
+            ScancodeSet1::new(),
+            // TODO: Expose an API to change the default KB layout.
+            layouts::Uk105Key,
+            HandleControl::Ignore,
+        ))
+    });
 pub static SCANCODE_STREAM: Lazy<Mutex<ScancodeStream>> =
     Lazy::new(|| Mutex::new(ScancodeStream::new()));
 
 pub fn add_scancode(scancode: u8) {
     if let Some(queue) = KBD_QUEUE.get() {
         if queue.push(scancode).is_err() {
-            // println!("WARNING: scancode queue full; dropping keyboard input");
+            // println!("WARNING: scancode queue full; dropping keyboard
+            // input");
         } else {
             WAKER.wake();
         }
@@ -59,7 +63,10 @@ impl Default for ScancodeStream {
 impl Stream for ScancodeStream {
     type Item = u8;
 
-    fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Self::Item>> {
         let queue = KBD_QUEUE.get().unwrap();
 
         if let Some(scancode) = queue.pop() {
@@ -200,4 +207,3 @@ impl core::fmt::Display for KeyStroke {
         }
     }
 }
- */

kernel/src/io/mod.rs

@@ -1,14 +1 @@
-pub mod keyboard;
-pub mod serial;
-
-// Re-exported macro definitions.
-
-/* pub use crate::print;
-pub use crate::print_log;
-pub use crate::printerr;
-pub use crate::println;
-pub use crate::println_log;
-pub use crate::printlnerr;
-pub use crate::serial_print;
-pub use crate::serial_println;
-*/
+// pub mod keyboard;

kernel/src/lib.rs

@@ -11,10 +11,10 @@
     rustdoc::missing_panics_doc
 )]
 
+use arch::x86_64::dev::serial;
 use arch::x86_64::{gdt, interrupts};
 use core::arch::asm;
 use graphics::font::{FONT_SPLEEN_8X16, Font};
-use io::serial;
 use limine::BaseRevision;
 
 pub mod arch;