X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Ftime.c;h=6a2d0399218713d28e7830a84230cb0e11b3586d;hb=41769c02317835472d7678d3531ecfc23df8e17a;hp=49d515e4e5cd76966e8a1ffdfb0795ffda820738;hpb=fed0a8f469f7b187d26c0c8cb109bfd6930efaee;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/time.c b/Kernel/arch/x86/time.c
index 49d515e4..6a2d0399 100644
--- a/Kernel/arch/x86/time.c
+++ b/Kernel/arch/x86/time.c
@@ -8,10 +8,12 @@
 // === MACROS ===
 #define	TIMER_QUANTUM	100
 // 2^(15-rate), 15: 1HZ, 5: 1024Hz, 2: 8192Hz
-#define TIMER_RATE	12	// (Max: 15, Min: 2) - 15 = 1Hz, 13 = 4Hz, 12 = 8Hz, 11 = 16Hz 10 = 32Hz, 2
+// (Max: 15, Min: 2) - 15 = 1Hz, 13 = 4Hz, 12 = 8Hz, 11 = 16Hz 10 = 32Hz, 2 = 8192Hz
+#define TIMER_RATE	12
+//#define TIMER_RATE	15
 #define TIMER_FREQ	(0x8000>>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))
+#define MS_PER_TICK_FRACT	((0x80000000*(1000%TIMER_FREQ))/TIMER_FREQ)
 
 // === IMPORTS ===
 extern Sint64	giTimestamp;
@@ -20,17 +22,20 @@ extern Uint64	giPartMiliseconds;
 extern void	Timer_CallTimers(void);
 
 // === PROTOTYPES ===
-void	Time_Interrupt();
+void	Time_Interrupt(int);
 
 // === CODE ===
 /**
- * \fn int Time_Setup()
+ * \fn int Time_Setup(void)
  * \brief Sets the system time from the Realtime-Clock
  */
-int Time_Setup()
+int Time_Setup(void)
 {
 	Uint8	val;
 	
+	Log_Log("Timer", "RTC Timer firing at %iHz (%i divisor), %i.0x%08x",
+		TIMER_FREQ, TIMER_RATE, MS_PER_TICK_WHOLE, MS_PER_TICK_FRACT);
+	
 	outb(0x70, inb(0x70)&0x7F);	// Disable NMIs
 	__asm__ __volatile__ ("cli");	// Disable normal interrupts
 	
@@ -48,20 +53,27 @@ int Time_Setup()
 	outb(0x70, 0x0B);	// Set the index again (a read will reset the index to register D)
 	outb(0x71, val | 0x40);	// Write the previous value or'd with 0x40. This turns on bit 6 of register D
 	
-	__asm__ __volatile__ ("sti");	// Disable normal interrupts
-	outb(0x70, inb(0x70)|0x80);	// Disable NMIs
+	__asm__ __volatile__ ("sti");	// Re-enable normal interrupts
+	outb(0x70, inb(0x70)|0x80);	// Re-enable NMIs
 	
 	// Install IRQ Handler
 	IRQ_AddHandler(8, Time_Interrupt);
+	
+	// Make sure the RTC actually fires
+	outb(0x70, 0x0C); // Select register C
+	inb(0x71);	// Just throw away contents.
+	
 	return 0;
 }
 
 /**
- * \fn void Time_Interrupt()
  * \brief Called on the timekeeping IRQ
+ * \param irq	IRQ number (unused)
  */
-void Time_Interrupt()
+void Time_Interrupt(int irq)
 {
+	//Log("RTC Tick");
+	
 	giTicks ++;
 	giTimestamp += MS_PER_TICK_WHOLE;
 	giPartMiliseconds += MS_PER_TICK_FRACT;
@@ -79,9 +91,9 @@ void Time_Interrupt()
 
 #if 0
 /**
- * \fn void Time_TimerThread()
+ * \fn void Time_TimerThread(void)
  */
-void Time_TimerThread()
+void Time_TimerThread(void)
 {
 	Sint64	next;
 	Threads_SetName("TIMER");