Sync computers

src/main.rs

@@ -16,7 +16,7 @@ use log::info;
 
 use crate::{
     io::init_log,
-    pci::scan_pci_for_virtio_keyboard,
+    pci::{PciDeviceIterator, scan_pci_for_virtio_keyboard},
     riscv::enable_supervisor_interrupt,
     scheduler::{SCHEDULER, idle},
     user::{proc2, test},
@@ -60,6 +60,9 @@ static HEAP_INITIALIZED: AtomicBool = AtomicBool::new(false);
 // Usize is assumed to be an u64 in the whole kernel
 const _: () = assert!(core::mem::size_of::<usize>() == core::mem::size_of::<u64>());
 
+#[cfg(not(target_endian = "little"))]
+compile_error! {"This kernel implementation assume endianness is little-endian. Some memory access like PCI could not work in big-endian."}
+
 // 1. Allouer de la mémoire statique alignée pour la queue
 static mut KBD_QUEUE: Virtqueue = unsafe { core::mem::zeroed() };
 pub static mut KBD_DRIVER: Option<VirtioPciDriver> = None;
@@ -87,6 +90,10 @@ pub extern "C" fn supervisor_mode_entry() {
 
     enable_supervisor_interrupt();
 
+    for pci in PciDeviceIterator::new() {
+        println!("{:x?}", pci.vendor_and_device_id())
+    }
+
     unsafe {
         let pci_info = scan_pci_for_virtio_keyboard().unwrap();
         KBD_DRIVER = Some(VirtioPciDriver::new(