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We should disable sie before trapping back to user.

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This commit is contained in:
Yifan Wu 2022-03-10 16:27:05 -08:00
parent 26f44233f6
commit ba611a1458
8 changed files with 43 additions and 33 deletions
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13
os/src/boards/qemu.rs
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@ -28,31 +28,18 @@ pub fn device_init() {
plic.enable(hart_id, supervisor, intr_src_id);
plic.set_priority(intr_src_id, 1);
}
crate::println!(
"Hart0M threshold = {}",
plic.get_threshold(hart_id, IntrTargetPriority::Machine)
);
crate::println!(
"Hart0S threshold = {}",
plic.get_threshold(hart_id, IntrTargetPriority::Supervisor)
);
crate::println!("1 prio = {}", plic.get_priority(1));
crate::println!("10 prio = {}", plic.get_priority(10));
unsafe {
sie::set_sext();
}
}
pub fn irq_handler() {
//crate::println!("->irq_handler");
let mut plic = unsafe { PLIC::new(VIRT_PLIC) };
let intr_src_id = plic.claim(0, IntrTargetPriority::Supervisor);
//crate::println!("intr_src={}", intr_src_id);
match intr_src_id {
1 => BLOCK_DEVICE.handle_irq(),
10 => UART.handle_irq(),
_ => panic!("unsupported IRQ {}", intr_src_id),
}
plic.complete(0, IntrTargetPriority::Supervisor, intr_src_id);
//crate::println!("irq_handler->");
}