strat9_kernel/hardware/usb/
mod.rs

1// USB subsystem
2//
3// Supports:
4// - xHCI (USB 3.0)
5// - EHCI (USB 2.0)
6// - UHCI (USB 1.1)
7// - HID devices (keyboard, mouse)
8
9pub mod ehci;
10pub mod hid;
11pub mod uhci;
12pub mod xhci;
13
14/// Performs the init operation.
15pub fn init() {
16    // Initialize controllers in order: xHCI first (USB 3.0), then EHCI (USB 2.0), then UHCI (USB 1.1)
17    // This ensures we use the fastest available controller for each device
18
19    log::info!("[USB] Initializing USB subsystem...");
20
21    // xHCI (USB 3.0) - must be initialized first as it may control EHCI
22    xhci::init();
23
24    // EHCI (USB 2.0)
25    ehci::init();
26
27    // UHCI (USB 1.1) - for legacy devices
28    uhci::init();
29
30    // Initialize HID drivers after controllers are ready
31    hid::init();
32
33    let total_controllers = (if xhci::is_available() { 1 } else { 0 })
34        + (if ehci::is_available() { 1 } else { 0 })
35        + (if uhci::is_available() { 1 } else { 0 });
36
37    log::info!("[USB] Total USB controllers: {}", total_controllers);
38}
strat9_kernel/hardware/usb/mod.rs

strat9_kernel/hardware/usb/
mod.rs
