forked from M-Labs/artiq-zynq
run idle kernel on flash
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parent
ccd3bf3003
commit
491e426222
@ -696,27 +696,6 @@ async fn handle_connection(
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}
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}
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async fn load_and_run_idle_kernel(
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buffer: &Vec<u8>,
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control: &Rc<RefCell<kernel::Control>>,
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up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
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aux_mutex: &Rc<Mutex<bool>>,
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routing_table: &drtio_routing::RoutingTable,
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timer: GlobalTimer,
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) {
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info!("Loading idle kernel");
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let res = handle_flash_kernel(buffer, control, up_destinations, aux_mutex, routing_table, timer).await;
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match res {
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Err(_) => warn!("error loading idle kernel"),
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_ => (),
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}
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info!("Running idle kernel");
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let _ = handle_run_kernel(None, control, up_destinations, aux_mutex, routing_table, timer)
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.await
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.map_err(|_| warn!("error running idle kernel"));
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info!("Idle kernel terminated");
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}
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pub fn main(timer: GlobalTimer, cfg: Config) {
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let net_addresses = net_settings::get_addresses(&cfg);
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info!("network addresses: {}", net_addresses);
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@ -777,7 +756,6 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
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moninj::start(timer, &aux_mutex, &drtio_routing_table);
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let control: Rc<RefCell<kernel::Control>> = Rc::new(RefCell::new(kernel::Control::start()));
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let idle_kernel = Rc::new(cfg.read("idle_kernel").ok());
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if let Ok(buffer) = cfg.read("startup_kernel") {
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info!("Loading startup kernel...");
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let routing_table = drtio_routing_table.borrow();
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@ -803,36 +781,27 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
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error!("Error loading startup kernel!");
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}
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}
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mgmt::start(cfg);
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let cfg = Rc::new(cfg);
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let restart_idle = Rc::new(Semaphore::new(1, 1));
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mgmt::start(cfg.clone(), restart_idle.clone());
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task::spawn(async move {
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let connection = Rc::new(Semaphore::new(0, 1));
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let connection = Rc::new(Semaphore::new(1, 1));
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let terminate = Rc::new(Semaphore::new(0, 1));
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{
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let control = control.clone();
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let idle_kernel = idle_kernel.clone();
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let connection = connection.clone();
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let terminate = terminate.clone();
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let up_destinations = up_destinations.clone();
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let aux_mutex = aux_mutex.clone();
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let routing_table = drtio_routing_table.clone();
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task::spawn(async move {
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let routing_table = routing_table.borrow();
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select_biased! {
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_ = (async {
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if let Some(buffer) = &*idle_kernel {
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load_and_run_idle_kernel(&buffer, &control, &up_destinations, &aux_mutex, &routing_table, timer).await;
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}
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}).fuse() => (),
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_ = terminate.async_wait().fuse() => ()
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}
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connection.signal();
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});
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}
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let can_restart_idle = Rc::new(Semaphore::new(1, 1));
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let restart_idle = restart_idle.clone();
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loop {
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let mut stream = TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap();
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let control = control.clone();
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let mut maybe_stream = select_biased! {
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s = (async {
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TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap()
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}).fuse() => Some(s),
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_ = (async {
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restart_idle.async_wait().await;
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can_restart_idle.async_wait().await;
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}).fuse() => None
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};
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if connection.try_wait().is_none() {
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// there is an existing connection
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@ -840,32 +809,56 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
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connection.async_wait().await;
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}
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let maybe_idle_kernel = cfg.read("idle_kernel").ok();
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if maybe_idle_kernel.is_none() && maybe_stream.is_none() {
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control.borrow_mut().restart(); // terminate idle kernel if running
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}
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let control = control.clone();
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let idle_kernel = idle_kernel.clone();
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let connection = connection.clone();
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let terminate = terminate.clone();
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let can_restart_idle = can_restart_idle.clone();
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let up_destinations = up_destinations.clone();
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let aux_mutex = aux_mutex.clone();
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let routing_table = drtio_routing_table.clone();
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// we make sure the value of terminate is 0 before we start
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let _ = terminate.try_wait();
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let _ = can_restart_idle.try_wait();
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task::spawn(async move {
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let routing_table = routing_table.borrow();
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select_biased! {
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_ = (async {
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let _ = handle_connection(&mut stream, control.clone(), &up_destinations, &aux_mutex, &routing_table, timer)
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.await
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.map_err(|e| warn!("connection terminated: {}", e));
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if let Some(buffer) = &*idle_kernel {
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load_and_run_idle_kernel(&buffer, &control, &up_destinations, &aux_mutex, &routing_table, timer).await;
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if let Some(stream) = &mut maybe_stream {
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let _ = handle_connection(stream, control.clone(), &up_destinations, &aux_mutex, &routing_table, timer)
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.await
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.map_err(|e| warn!("connection terminated: {}", e));
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}
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can_restart_idle.signal();
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match maybe_idle_kernel {
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Some(buffer) => {
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info!("loading idle kernel");
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match handle_flash_kernel(&buffer, &control, &up_destinations, &aux_mutex, &routing_table, timer).await {
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Ok(_) => {
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info!("running idle kernel");
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match handle_run_kernel(None, &control, &up_destinations, &aux_mutex, &routing_table, timer).await {
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Ok(_) => info!("idle kernel finished"),
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Err(_) => warn!("idle kernel running error")
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}
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},
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Err(_) => warn!("idle kernel loading error")
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}
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},
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None => info!("no idle kernel found")
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}
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}).fuse() => (),
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_ = terminate.async_wait().fuse() => ()
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}
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connection.signal();
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let _ = stream.flush().await;
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let _ = stream.abort().await;
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if let Some(stream) = maybe_stream {
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let _ = stream.flush().await;
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let _ = stream.abort().await;
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}
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});
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}
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});
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@ -913,8 +906,9 @@ pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
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};
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Sockets::init(32);
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mgmt::start(cfg);
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let dummy = Rc::new(Semaphore::new(0, 1));
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mgmt::start(Rc::new(cfg), dummy);
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// getting eth settings disables the LED as it resets GPIO
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// need to re-enable it here
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@ -6,6 +6,7 @@ use libasync::{smoltcp::TcpStream, task};
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use libboard_artiq::logger::{BufferLogger, LogBufferRef};
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use libboard_zynq::{slcr, smoltcp};
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use libconfig::Config;
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use libcortex_a9::semaphore::Semaphore;
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use log::{self, debug, error, info, warn, LevelFilter};
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use num_derive::FromPrimitive;
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use num_traits::FromPrimitive;
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@ -111,7 +112,7 @@ async fn read_key(stream: &mut TcpStream) -> Result<String> {
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Ok(String::from_utf8(buffer).unwrap())
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}
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async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cfg: Rc<Config>) -> Result<()> {
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async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cfg: Rc<Config>, restart_idle: Rc<Semaphore>) -> Result<()> {
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if !expect(&stream, b"ARTIQ management\n").await? {
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return Err(Error::UnexpectedPattern);
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}
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@ -200,6 +201,9 @@ async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cf
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let value = cfg.write(&key, buffer);
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if value.is_ok() {
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debug!("write success");
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if key == "idle_kernel" {
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restart_idle.signal();
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}
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write_i8(stream, Reply::Success as i8).await?;
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} else {
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// this is an error because we do not expect write to fail
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@ -213,6 +217,9 @@ async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cf
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let value = cfg.remove(&key);
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if value.is_ok() {
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debug!("erase success");
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if key == "idle_kernel" {
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restart_idle.signal();
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}
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write_i8(stream, Reply::Success as i8).await?;
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} else {
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warn!("erase failed");
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@ -229,17 +236,17 @@ async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cf
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}
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}
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pub fn start(cfg: Config) {
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pub fn start(cfg: Rc<Config>, restart_idle: Rc<Semaphore>) {
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task::spawn(async move {
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let pull_id = Rc::new(RefCell::new(0u32));
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let cfg = Rc::new(cfg);
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loop {
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let mut stream = TcpStream::accept(1380, 2048, 2048).await.unwrap();
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let pull_id = pull_id.clone();
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let cfg = cfg.clone();
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let restart_idle = restart_idle.clone();
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task::spawn(async move {
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info!("received connection");
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let _ = handle_connection(&mut stream, pull_id, cfg)
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let _ = handle_connection(&mut stream, pull_id, cfg, restart_idle)
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.await
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.map_err(|e| warn!("connection terminated: {:?}", e));
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let _ = stream.flush().await;
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