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#include <stdint.h>
#include "mouse.h"
#include "ringbuffer.h"
#include "compositor.h"
#include "interrupts.h"
#include "kernel/kernel.h"
#include "log.h"
#include "driver/vesa.h"
#include "asm_x86.h"
static volatile uint8_t mouse_cycle;
static volatile uint8_t mouse_byte[3];
static volatile int16_t mouse_x;
static volatile int16_t mouse_y;
static ringbuffer mouse_in;
bool mouse_worker()
{
if(ringbuffer_full(&mouse_in))
{
klog("mouse buffer full");
}
bool wake=false;
while(ringbuffer_has(&mouse_in)){
mouse_handler(ringbuffer_get(&mouse_in));
wake=true;
}
return wake;
}
void mouse_wait(uint8_t a_type) //unsigned char
{
uint32_t _time_out=100000; //unsigned int
if(a_type==0)
{
while(_time_out--) //Data
{
if((x86_inb(0x64) & 1)==1)
{
return;
}
}
return;
}
else
{
while(_time_out--) //Signal
{
if((x86_inb(0x64) & 2)==0)
{
return;
}
}
return;
}
}
static uint8_t mouse_read()
{
//Get's response from mouse
mouse_wait(0);
return x86_inb(0x60);
}
static void mouse_write(uint8_t a_write)
{
//Wait to be able to send a command
mouse_wait(1);
//Tell the mouse we are sending a command
x86_outb(0x64, 0xD4);
//Wait for the final part
mouse_wait(1);
//Finally write
x86_outb(0x60, a_write);
}
uint32_t mouse_interrupt(uint32_t esp)
{
uint8_t b=x86_inb(0x60);
ringbuffer_put(&mouse_in,b);
return esp;
}
void mouse_init()
{
mouse_in=ringbuffer_init(1);// 4096 bytes ringbuffer;
uint8_t _status; //unsigned char
//Enable the auxiliary mouse device
mouse_wait(1);
x86_outb(0x64, 0xA8);
//Enable the interrupts
mouse_wait(1);
x86_outb(0x64, 0x20);
mouse_wait(0);
_status=(x86_inb(0x60) | 2);
mouse_wait(1);
x86_outb(0x64, 0x60);
mouse_wait(1);
x86_outb(0x60, _status);
//Tell the mouse to use default settings
mouse_write(0xF6);
mouse_read(); //Acknowledge
//Enable the mouse
mouse_write(0xF4);
mouse_read(); //Acknowledge
interrupt_register(INTERRUPT_MOUSE,&mouse_interrupt);
}
// called as we filled the 3 bytes, everytime.
void mouse_action()
{
//klog("mouse %02x / %02x / %02x ",mouse_byte[0], mouse_byte[1],mouse_byte[2]);
//TODO: ignore last packet for 4packets mouse and resync if you get out of sync
if(mouse_byte[0]&0x80||mouse_byte[0]&0x40)
{
// klog("mouse overflow, skipping packet");
return; //skip packet on overflow
}
//OOOMG!!//
if(mouse_byte[1]>127){
mouse_x-=256;
mouse_x+=mouse_byte[1];
}
else
{
mouse_x+=mouse_byte[1];
}
if(mouse_byte[2]>127){
mouse_y-=256;
mouse_y+=mouse_byte[2];
}
else
{
mouse_y+=mouse_byte[2];
}
if(mouse_x<0)mouse_x=0;
if(mouse_y<0)mouse_y=0;
if(mouse_x>=1920)mouse_x=1920-1;
if(mouse_y>=1080)mouse_y=1080-1;
compositor_mouse_handle(mouse_x,1080-mouse_y, mouse_byte[0]);
}
void mouse_handler(uint8_t byte)//struct regs *a_r) //struct regs *a_r (not used but just there)
{
// X86_IRQ_BEGIN
switch(mouse_cycle)
{
case 0:
mouse_byte[0]=byte;
mouse_cycle++;
if(!(mouse_byte[0]&0x8))
{
//klog("mouse out of sync, try resync");
mouse_cycle--;
// kpanic("mouse packets out of sync!?"); // this bit is always 1, otherwise panic!
}
break;
case 1:
mouse_byte[1]=byte;
mouse_cycle++;
break;
case 2:
mouse_byte[2]=byte;
mouse_cycle=0;
mouse_action();
break;
}
// X86_IRQ_END
}
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