From 3deaef2a5d5ca3ad8a4339c21be3b054fba4fda2 Mon Sep 17 00:00:00 2001
From: Lee Lup Yuen <luppy@appkaki.com>
Date: Sat, 20 Jan 2024 09:40:32 +0800
Subject: [PATCH] To handle a keypress, we trigger the UART3 Interrupt

---
 riscv_cpu.c | 1 +
 virtio.c    | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/riscv_cpu.c b/riscv_cpu.c
index 26f9ba3..c20e8e7 100644
--- a/riscv_cpu.c
+++ b/riscv_cpu.c
@@ -1157,6 +1157,7 @@ static void raise_exception2(RISCVCPUState *s, uint32_t cause,
 static void raise_exception(RISCVCPUState *s, uint32_t cause)
 {
     printf("raise_exception: cause=%d\n", cause);////
+    printf("raise_exception: sleep\n"); sleep(1);////
     raise_exception2(s, cause, 0);
 }
 
diff --git a/virtio.c b/virtio.c
index bc6a8cb..a586cee 100644
--- a/virtio.c
+++ b/virtio.c
@@ -1334,8 +1334,8 @@ int virtio_console_write_data(VIRTIODevice *s, const uint8_t *buf, int buf_len)
     //// To handle a keypress, we trigger the UART3 Interrupt.
     //// TODO: Pass the keypress to VM Guest
     printf("[%c]\n", buf[0]); ////
-    // s->int_status |= 1;
-    // set_irq(s->irq, 1);
+    s->int_status |= 1;
+    set_irq(s->irq, 1);
 
     // TODO: Clear the interrupt after reading keypress
     // set_irq(s->irq, 0);