From 0e43e73fc762f2027e2da48810bfd7394377e95f Mon Sep 17 00:00:00 2001
From: Julien CLEMENT <julien.clement@epita.fr>
Date: Mon, 26 Jul 2021 09:04:30 +0200
Subject: [PATCH] feat(keyboard): add simple keyboard handler

Signed-off-by: Julien CLEMENT <julien.clement@epita.fr>
---
 k/Makefile              | 3 ++-
 k/events/idt.c          | 9 +++++++++
 k/events/idt.h          | 2 ++
 k/events/pic/keyboard.c | 7 +++++++
 k/events/pic/keyboard.h | 9 +++++++++
 5 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 k/events/pic/keyboard.c
 create mode 100644 k/events/pic/keyboard.h

diff --git a/k/Makefile b/k/Makefile
index f56fdfa..0eee6ca 100644
--- a/k/Makefile
+++ b/k/Makefile
@@ -34,7 +34,8 @@ OBJS	= \
 	  gdt.o \
 	  events/idt.o \
 	  events/isr.o \
-	  events/pic/pic.o
+	  events/pic/pic.o \
+	  events/pic/keyboard.o
 
 
 DEPS = $(OBJS:.o=.d)
diff --git a/k/events/idt.c b/k/events/idt.c
index c13418a..735cc24 100644
--- a/k/events/idt.c
+++ b/k/events/idt.c
@@ -1,6 +1,7 @@
 #include "idt.h"
 #include "stdio.h"
 #include "pic/pic.h"
+#include "pic/keyboard.h"
 #include "io.h"
 
 static struct idt idt = { 0 };
@@ -45,6 +46,14 @@ static struct idt_entry_descriptor idt_entries_descriptors[IDT_NB_ENTRIES] = {
 void interrupt_handler(struct isr_param *isr_param)
 {
     printf("Oh no %d!\r\n", isr_param->int_vector);
+
+    switch (isr_param->int_vector)
+    {
+        case KEYBOARD_INT_VECTOR:
+            keyboard_handler();
+            break;
+    }
+
     if (isr_param->int_vector > IDT_RESERVED_ENTRIES
             && isr_param->int_vector < IDT_RESERVED_ENTRIES + 16)
         acknowledge(isr_param->int_vector);
diff --git a/k/events/idt.h b/k/events/idt.h
index 88a306a..b50948f 100644
--- a/k/events/idt.h
+++ b/k/events/idt.h
@@ -12,6 +12,8 @@
 #define INTERRUPT_TYPE 0x6
 #define TRAP_TYPE      0x7
 
+#define KEYBOARD_INT_VECTOR 33
+
 struct idt_entry
 {
     uint16_t offset_1   : 16;
diff --git a/k/events/pic/keyboard.c b/k/events/pic/keyboard.c
new file mode 100644
index 0000000..47f2c85
--- /dev/null
+++ b/k/events/pic/keyboard.c
@@ -0,0 +1,7 @@
+#include "keyboard.h"
+#include "io.h"
+
+void keyboard_handler(void)
+{
+    inb(KEYBOARD_IO);
+}
diff --git a/k/events/pic/keyboard.h b/k/events/pic/keyboard.h
new file mode 100644
index 0000000..8913deb
--- /dev/null
+++ b/k/events/pic/keyboard.h
@@ -0,0 +1,9 @@
+#ifndef KEYBOARD_H
+#define KEYBOARD_H
+
+#define KEYBOARD_IO 0x60
+#define KEYBOARD_STATUS 0x64
+
+void keyboard_handler(void);
+
+#endif /* !KEYBOARD_H */