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#include <kernel/interrupts/interrupts.h>
#include <kernel/io/io.h>
#include <kernel/graphics/vesa.h>
char mouse_cycle = 0;
char mouse_byte[3];
int mouse_x = 0;
int mouse_y = 0;
int mouse_but_1 = 0;
int mouse_but_2 = 0;
int mouse_but_3 = 0;
void mouse_handler(struct regs *a_r)
{
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);
mouse_x += mouse_byte[1];
mouse_y -= mouse_byte[2];
mouse_but_1 = mouse_byte[0] & 1;
mouse_but_2 = (mouse_byte[0] >> 1) & 1;
mouse_but_3 = (mouse_byte[0] >> 2) & 1;
mouse_cycle = 0;
if (mouse_x < 0) mouse_x = 0;
if (mouse_y < 0) mouse_y = 0;
if (mouse_x > vbe_width - 1) mouse_x = vbe_width - 1;
if (mouse_y > vbe_height - 1) mouse_y = vbe_height - 1;
vesa_draw_cursor(mouse_x, mouse_y);
break;
default:
break;
}
}
void mouse_wait(unsigned char a_type)
{
unsigned int 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(unsigned char 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()
{
unsigned char status;
// Enable auxiliary mouse device
mouse_wait(1);
outb(0x64, 0xA8);
// Enable interrupts
mouse_wait(1);
outb(0x64, 0x20);
mouse_wait(0);
status = (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 = mouse_read();
if (status == 3) serial_write("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 = mouse_read();
if (status == 4) serial_write("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);
info("Installed mouse handler");
}
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