X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Ftime.c;h=5f7d59271dd33861cad6d6fec712eeae9e48b2f9;hb=54746c855c6e2fe42fde9f93b0ce3f41aeefc2e5;hp=4cfa280daaf1ebd694582656b105a0c1650d6b68;hpb=466eda7c917791866a29c253c6c22197faf41bf7;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/time.c b/Kernel/arch/x86/time.c
index 4cfa280d..5f7d5927 100644
--- a/Kernel/arch/x86/time.c
+++ b/Kernel/arch/x86/time.c
@@ -3,12 +3,13 @@
  * Timekeeping
  * arch/x86/time.c
  */
-#include <common.h>
+#include <acess.h>
 
 // === MACROS ===
 #define	NUM_TIMERS	8
 #define	TIMER_QUANTUM	100
-#define TIMER_FREQ	1024	//Hz
+#define TIMER_RATE	13	// (Max: 15, Min: 2) - 15 = 1Hz, 13 = 4Hz, 10 = 1024Hz
+#define TIMER_FREQ	(32768>>TIMER_RATE)	//Hz
 #define MS_PER_TICK_WHOLE	(1000/(TIMER_FREQ))
 #define MS_PER_TICK_FRACT	((Uint64)(1000*TIMER_FREQ-((Uint64)MS_PER_TICK_WHOLE)*0x80000000/TIMER_FREQ))
 
@@ -41,6 +42,14 @@ int Time_Setup()
 	outb(0x70, inb(0x70)&0x7F);	// Disable NMIs
 	__asm__ __volatile__ ("cli");	// Disable normal interrupts
 	
+	// Set IRQ8 firing rate
+	outb(0x70, 0x0A);	// Set the index to register A
+	val = inb(0x71); // Get the current value of register A
+	outb(0x70, 0x0A); // Reset index to A
+	val &= 0xF0;
+	val |= TIMER_RATE;
+	outb(0x71, val);	// Update the timer rate
+		
 	// Enable IRQ8
 	outb(0x70, 0x0B);	// Set the index to register B
 	val = inb(0x71);	// Read the current value of register B
@@ -69,15 +78,19 @@ void Time_Interrupt()
 		giPartMiliseconds -= 0x80000000;
 	}
 	
-	Log("giTimestamp = %lli", giTimestamp);
+	//Log("giTimestamp = %lli", giTimestamp);
 	
 	Timer_CallTimers();
+
+	// Make sure the RTC Fires again
+	outb(0x70, 0x0C); // Select register C
+	inb(0x71);	// Just throw away contents.
 }
 
+#if 0
 /**
  * \fn void Time_TimerThread()
  */
-#if 0
 void Time_TimerThread()
 {
 	Sint64	next;
@@ -114,9 +127,7 @@ void Timer_CallTimers()
 		i < NUM_TIMERS;
 		i ++)
 	{
-		Log("%i", i);
 		if(gTimers[i].Callback == NULL)	continue;
-		Log("%i - %lli < %lli", i, giTimestamp, gTimers[i].FiresAfter);
 		if(giTimestamp < gTimers[i].FiresAfter)	continue;
 		callback = gTimers[i].Callback;
 		gTimers[i].Callback = NULL;
@@ -141,8 +152,8 @@ int Time_CreateTimer(int Delta, void *Callback, void *Argument)
 		gTimers[ret].Callback = Callback;
 		gTimers[ret].FiresAfter = giTimestamp + Delta;
 		gTimers[ret].Argument = Argument;
-		Log("Callback = %p", Callback);
-		Log("Timer %i fires at %lli", ret, gTimers[ret].FiresAfter);
+		//Log("Callback = %p", Callback);
+		//Log("Timer %i fires at %lli", ret, gTimers[ret].FiresAfter);
 		return ret;
 	}
 	return -1;
@@ -166,3 +177,9 @@ void Time_Delay(int Delay)
 	Sint64	dest = giTimestamp + Delay;
 	while(dest < giTimestamp)	Threads_Yield();
 }
+
+// === EXPORTS ===
+EXPORT(now);
+EXPORT(Time_CreateTimer);
+EXPORT(Time_RemoveTimer);
+EXPORT(Time_Delay);