sys_shutdown: initial implementation

Signed-off-by: Andy-Python-Programmer <andypythonappdeveloper@gmail.com>

Author: Andy-Python-Programmer

src/aero_kernel/src/drivers/lai.rs

@@ -36,7 +36,7 @@ impl lai::Host for LaiHost {
     fn sleep(&self, ms: u64) {
         scheduler::get_scheduler()
             .inner
-            .sleep(Some(ms as usize * 1_000_000))
+            .sleep(Some(ms as usize / 1000))
             .expect("lai: unexpected signal during sleep")
     }
 
@@ -88,6 +88,14 @@ impl lai::Host for LaiHost {
         let header = PciHeader::new(bus, slot, fun);
         unsafe { header.read::<u32>(offset as u32) }
     }
+
+    // Memory functions:
+    #[inline]
+    fn map(&self, address: usize, _count: usize) -> *mut u8 {
+        PhysAddr::new(address as u64)
+            .as_hhdm_virt()
+            .as_mut_ptr::<u8>()
+    }
 }
 
 pub fn init_lai() {
@@ -98,7 +106,6 @@ pub fn init_lai() {
     lai::create_namespace();
 
     lai::enable_acpi(1);
-    lai::enter_sleep(5);
 }
 
 crate::module_init!(init_lai);

src/aero_kernel/src/syscall/process.rs

@@ -28,6 +28,7 @@ use crate::fs::Path;
 use crate::mem::paging::VirtAddr;
 use crate::userland::scheduler;
 use crate::userland::signals::SignalEntry;
+use crate::utils::sync::IrqGuard;
 
 static HOSTNAME: Once<Mutex<String>> = Once::new();
 
@@ -309,6 +310,8 @@ pub fn shutdown() -> ! {
     fs::cache::clear_inode_cache();
     fs::cache::clear_dir_cache();
 
-    // TODO
-    loop {}
+    let _guard = IrqGuard::new();
+    lai::enter_sleep(5);
+
+    unreachable!("aml: failed to shutdown (enter state S5)")
 }

src/aero_kernel/src/utils/io.rs

@@ -85,9 +85,9 @@ pub unsafe fn inb(port: u16) -> u8 {
 #[inline]
 pub unsafe fn outw(port: u16, value: u16) {
     asm!(
-        "out dx, eax",
+        "out dx, ax",
         in("dx") port,
-        in("eax") value,
+        in("ax") value,
         options(preserves_flags, nomem, nostack)
     );
 }
@@ -114,7 +114,7 @@ pub unsafe fn inl(port: u16) -> u32 {
         "in eax, dx",
         in("dx") port,
         out("eax") ret,
-        options(preserves_flags, nomem, nostack)
+        options(nomem, nostack, preserves_flags)
     );
 
     ret
@@ -127,10 +127,10 @@ pub unsafe fn inw(port: u16) -> u16 {
     let ret: u16;
 
     asm!(
-        "in eax, dx",
-        out("eax") ret,
+        "in ax, dx",
+        out("ax") ret,
         in("dx") port,
-        options(preserves_flags, nomem, nostack)
+        options(nomem, nostack, preserves_flags)
     );
 
     ret

userland/apps/aero_shell/src/main.rs

@@ -157,6 +157,8 @@ fn repl(history: &mut Vec<String>) -> Result<(), AeroSyscallError> {
                 sys_sleep(&timespec)?;
             }
 
+            "shutdown" => sys_shutdown(),
+
             "doom" => {
                 let child = sys_fork()?;