Lots of stuff added : heap, timer, device managment, ...

1 files changed, 56 insertions, 0 deletions

diff --git a/Source/Kernel/Devices/Timer.class.cpp b/Source/Kernel/Devices/Timer.class.cpp
new file mode 100644
index 0000000..42a6d1c
--- /dev/null
+++ b/Source/Kernel/Devices/Timer.class.cpp
@@ -0,0 +1,56 @@
+#include "Timer.class.h"
+
+#include <DeviceManager/Dev.ns.h>
+#include <DeviceManager/Time.ns.h>
+
+using namespace Sys; //For outb
+
+Timer::Timer(u8int frequency) {
+	m_ticks = 0;
+	m_seconds = 0;
+
+	Dev::requestIRQ(this, 0);
+	Time::setTimer(this);
+	setFrequency(frequency);
+}
+
+String Timer::getClass() {
+	return String("timer");
+}
+
+String Timer::getName() {
+	return String("Programmable interrupt timer");
+}
+
+void Timer::setFrequency(u8int frequency) {
+	m_frequency = frequency;
+	u32int divisor = 1193180 / (u32int)frequency;
+	outb(0x43, 0x36);
+	
+	u8int l = (u8int)(divisor & 0xFF);
+	u8int h = (u8int)( (divisor >> 8) & 0xFF);
+
+	outb(0x40, l);
+	outb(0x40, h);
+}
+
+u32int Timer::uptime() {
+	return m_seconds;
+}
+
+u32int Timer::time() {
+	return (m_seconds * 1000) + ((m_ticks * 1000) / m_frequency);
+}
+
+void Timer::handleIRQ(registers_t registers, int irq) {
+	if (irq == 0) {
+		m_ticks++;
+		if (m_ticks == m_frequency) {
+			m_ticks = 0;
+			m_seconds++;
+		}
+		//Switching task is called in Dev::handleInterrupt
+	}
+}
+
+