Added mouse driver and better event system

2 files changed, 165 insertions, 3 deletions

diff --git a/kernel/drivers/keyboard.c b/kernel/drivers/keyboard.c
index b60e437..14445d4 100644
--- a/kernel/drivers/keyboard.c
+++ b/kernel/drivers/keyboard.c
@@ -4,9 +4,12 @@
 #include <def.h>
 #include <event.h>
 #include <interrupts.h>
+#include <mem.h>
 #include <print.h>
+#include <sys.h>
 
 char keymap[128];
+struct event_keyboard *event;
 
 int state = 0;
 int merged = 0;
@@ -26,9 +29,10 @@ void keyboard_handler()
 	// TODO: "Merge" scancode to linux keycode?
 	/* printf("%x %x = %x\n", scancode, state ? 0xe0 : 0, merged); */
 
-	if ((scancode & 0x80) == 0) { // PRESS
-		event_trigger(EVENT_KEYBOARD, (u32 *)scancode);
-	}
+	event->magic = KEYBOARD_MAGIC;
+	event->press = (scancode & 0x80) == 0;
+	event->scancode = event->press ? scancode : scancode & ~0x80;
+	event_trigger(EVENT_KEYBOARD, event);
 
 	state = 0;
 	merged = 0;
@@ -50,6 +54,7 @@ void keyboard_rate()
 void keyboard_install()
 {
 	//keyboard_rate(); TODO: Fix keyboard rate?
+	event = malloc(sizeof(*event));
 	irq_install_handler(1, keyboard_handler);
 }
 
diff --git a/kernel/drivers/mouse.c b/kernel/drivers/mouse.c
new file mode 100644
index 0000000..64204c3
--- /dev/null
+++ b/kernel/drivers/mouse.c
@@ -0,0 +1,157 @@
+// MIT License, Copyright (c) 2020 Marvin Borner
+
+#include <cpu.h>
+#include <event.h>
+#include <interrupts.h>
+#include <mem.h>
+#include <print.h>
+#include <sys.h>
+
+char mouse_cycle = 0;
+char mouse_byte[3];
+
+struct event_mouse *event;
+
+void mouse_handler()
+{
+	switch (mouse_cycle) {
+	case 0:
+		mouse_byte[0] = inb(0x60);
+		if (((mouse_byte[0] >> 3) & 1) == 1)
+			mouse_cycle++;
+		else
+			mouse_cycle = 0;
+		break;
+	case 1:
+		mouse_byte[1] = inb(0x60);
+		mouse_cycle++;
+		break;
+	case 2:
+		mouse_byte[2] = inb(0x60);
+
+		event->magic = MOUSE_MAGIC;
+		event->diff_x = mouse_byte[1];
+		event->diff_y = mouse_byte[2];
+		event->but1 = mouse_byte[0] & 1;
+		event->but2 = (mouse_byte[0] >> 1) & 1;
+		event->but3 = (mouse_byte[0] >> 2) & 1;
+		event_trigger(EVENT_MOUSE, event);
+
+		mouse_cycle = 0;
+		break;
+	default:
+		break;
+	}
+}
+
+void mouse_wait(u8 a_type)
+{
+	u32 time_out = 100000;
+	if (a_type == 0) {
+		while (time_out--)
+			if ((inb(0x64) & 1) == 1)
+				return;
+		return;
+	} else {
+		while (time_out--)
+			if ((inb(0x64) & 2) == 0)
+				return;
+		return;
+	}
+}
+
+void mouse_write(u8 a_write)
+{
+	mouse_wait(1);
+	outb(0x64, 0xD4);
+	mouse_wait(1);
+	outb(0x60, a_write);
+}
+
+char mouse_read()
+{
+	mouse_wait(0);
+	return inb(0x60);
+}
+
+void mouse_install()
+{
+	event = malloc(sizeof(*event));
+
+	u8 status;
+
+	// Enable auxiliary mouse device
+	mouse_wait(1);
+	outb(0x64, 0xA8);
+
+	// Enable interrupts
+	mouse_wait(1);
+	outb(0x64, 0x20);
+	mouse_wait(0);
+	status = (u8)(inb(0x60) | 3);
+	mouse_wait(1);
+	outb(0x64, 0x60);
+	mouse_wait(1);
+	outb(0x60, status);
+
+	// Enable mousewheel
+	mouse_write(0xF2);
+	mouse_read();
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(200);
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(100);
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(80);
+	mouse_read();
+	mouse_write(0xF2);
+	mouse_read();
+	status = (u8)mouse_read();
+	if (status == 3)
+		printf("Scrollwheel support!\n");
+
+	// Activate 4th and 5th mouse buttons
+	mouse_write(0xF2);
+	mouse_read();
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(200);
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(200);
+	mouse_read();
+	mouse_write(0xF3);
+	mouse_read();
+	mouse_write(80);
+	mouse_read();
+	mouse_write(0xF2);
+	mouse_read();
+	status = (u8)mouse_read();
+	if (status == 4)
+		printf("4th and 5th mouse button support!\n");
+
+	/* TODO: Fix mouse laggyness
+    mouse_write(0xE8);
+    mouse_read();
+    mouse_write(0x03);
+    mouse_read();
+    mouse_write(0xF3);
+    mouse_read();
+    mouse_write(200);
+    mouse_read(); */
+
+	// Enable mouse
+	mouse_write(0xF4);
+	mouse_read();
+
+	// Setup the mouse handler
+	irq_install_handler(12, mouse_handler);
+}