mathieu
/
matos
1
1
Fork 0
Code Issues Pull Requests Releases Wiki Activity

PIT/Serial irq refactoring 

Serial IRQ still wip
This commit is contained in:
Mathieu Maret 2018-11-08 21:37:38 +01:00
parent e4200782ac
commit 00d7004815
6 changed files with 14 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
core/interrupt.h
View File

@ -9,3 +9,4 @@ void print_handler(struct interrupt_frame *frame, ulong error_code);
//IRQ
void keyboard_handler(struct interrupt_frame *frame);
void timer_handler(struct interrupt_frame *frame);
void serial_handler(struct interrupt_frame *frame);

2
core/irq_handler.c
View File

@ -25,5 +25,5 @@ __attribute__((interrupt)) void timer_handler(struct interrupt_frame *frame)
__attribute__((interrupt)) void serial_handler(struct interrupt_frame *frame)
{
EOIIrq(IRQ_COM1);
serial_do_irq((int)frame);
serial_do_irq(frame);
}

1
core/main.c
View File

@ -57,7 +57,6 @@ void kmain(unsigned long magic, unsigned long addr)
printf("Setting up IRQ handlers\n");
irqSetRoutine(IRQ_KEYBOARD, keyboard_handler);
irqSetRoutine(IRQ_TIMER, timer_handler);
printf("Enabling HW interrupts\n");
exceptionSetRoutine(EXCEPTION_DOUBLE_FAULT, print_handler);
// Enabling the HW interrupts

2
drivers/pit.c
View File

@ -1,5 +1,6 @@
#include "pit.h"
#include "io.h"
#include "irq.h"
int initPit(unsigned int freq)
{
@ -10,5 +11,6 @@ int initPit(unsigned int freq)
outb(PIT_CHAN_0, divisor & 0xFF);
outb(PIT_CHAN_0, divisor >> 8u);
irqSetRoutine(IRQ_TIMER, timer_handler);
return 0;
}

15
drivers/serial.c
View File

@ -1,6 +1,7 @@
#include "serial.h"
#include "io.h"
#include "irq.h"
#include "vga.h"
#define PORT 0x3f8 /* COM1 */
#define SERIAL_MAX_SPEED 115200
@ -31,11 +32,12 @@ void initSerial(int speed)
UART_NO_PARITY | UART_8BITS_WORD | UART_1_STOP_BIT); // 8 bits, no parity, one stop bit
outb(PORT + 2, 0xC7); // Enable FIFO, clear them, with 14-byte threshold
outb(PORT + 4, 0x0B); // IRQs enabled, RTS/DSR set
irqSetRoutine(IRQ_COM1, serial_handler);
}
int isTransmitEmpty()
{
return inb(PORT + 5) & 0x20;
return (inb(PORT + 5) & 0x20);
}
void writeSerial(char a)
@ -46,10 +48,9 @@ void writeSerial(char a)
outb(PORT, a);
}
void serial_do_irq(int level){
if(level == IRQ_COM1){
char c = inb(PORT + 5) & 1;
writeSerial(c);
}
return;
void serial_do_irq(struct interrupt_frame *level)
{
(void)level;
char c = inb(PORT);
writeSerial(c);
}

4
drivers/serial.h
View File

@ -1,6 +1,6 @@
#pragma once
#include "irq.h"
void initSerial(int speed);
void writeSerial(char a);
void serial_do_irq(int level);
void serial_do_irq(struct interrupt_frame *frame);