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Created a function to control the global S state

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This commit is contained in:
Connor Wood
2017-07-21 12:51:30 +01:00
parent 5c05b48921
commit 0365b6f2b7
2 changed files with 32 additions and 29 deletions
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30
src/acpi/mod.rs
View File

@@ -7,6 +7,8 @@ use collections::btree_map::BTreeMap;
use collections::string::String;
use alloc::boxed::Box;
use syscall::io::{Io, Pio};
use spin::{Mutex, RwLock};
use device::local_apic::LOCAL_APIC;
@@ -282,6 +284,34 @@ pub unsafe fn init(active_table: &mut ActivePageTable) {
*/
}
pub fn set_global_s_state(state: u8) {
if state == 5 {
let fadt = ACPI_TABLE.fadt.read();
if let Some(ref fadt) = *fadt {
let port = fadt.pm1a_control_block as u16;
let mut val = 1 << 13;
let namespace = ACPI_TABLE.namespace.read();
if let Some(ref namespace) = *namespace {
if let Some(s) = namespace.get("\\_S5") {
if let Ok(p) = s.get_as_package() {
let slp_typa = p[0].get_as_integer().expect("SLP_TYPa is not an integer");
let slp_typb = p[1].get_as_integer().expect("SLP_TYPb is not an integer");
println!("Shutdown SLP_TYPa {:X}, SLP_TYPb {:X}", slp_typa, slp_typb);
val |= slp_typa as u16;
println!("Shutdown with ACPI outw(0x{:X}, 0x{:X})", port, val);
Pio::<u16>::new(port).write(val);
}
}
}
}
}
}
pub struct Acpi {
pub fadt: RwLock<Option<Fadt>>,
pub namespace: RwLock<Option<BTreeMap<String, AmlValue>>>,

31
src/stop.rs
View File

@@ -4,35 +4,8 @@ use syscall::io::{Io, Pio};
#[no_mangle]
pub unsafe extern fn kstop() -> ! {
println!("kstop");
// ACPI shutdown
{
let fadt = acpi::ACPI_TABLE.fadt.read();
if let Some(ref fadt) = *fadt {
let port = fadt.pm1a_control_block as u16;
let mut val = 1 << 13;
let namespace = acpi::ACPI_TABLE.namespace.read();
if let Some(ref namespace) = *namespace {
if let Some(s) = namespace.get("\\_S5") {
if let Ok(p) = s.get_as_package() {
println!("{:?}", p);
let slp_typa = p[0].get_as_integer().expect("SLP_TYPa is not an integer");
let slp_typb = p[1].get_as_integer().expect("SLP_TYPb is not an integer");
println!("Shutdown SLP_TYPa {:X}, SLP_TYPb {:X}", slp_typa, slp_typb);
val |= slp_typa as u16;
println!("Shutdown with ACPI outw(0x{:X}, 0x{:X})", port, val);
Pio::<u16>::new(port).write(val);
}
}
}
}
}
acpi::set_global_s_state(5);
// Magic shutdown code for bochs and qemu (older versions).
for c in "Shutdown".bytes() {
let port = 0x8900;