feat(keyboard): add simple keyboard handler

Signed-off-by: Julien CLEMENT <julien.clement@epita.fr>

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)

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);

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;

k/events/pic/keyboard.c

@@ -0,0 +1,7 @@
+#include "keyboard.h"
+#include "io.h"
+
+void keyboard_handler(void)
+{
+    inb(KEYBOARD_IO);
+}

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 */