* - Tegra2 Core code
*/
#include <acess.h>
+#include <timers.h> // MicroSleep
#include "platform_tegra2.h"
+#include "include/options.h"
// === CONSTANTS ===
#define TIMER0_INT (0*32+0) // Pri #0
// === PROTORTYPES ===
void Timer_IRQHandler_SysClock(int IRQ, void *_unused);
+void Timer_IRQHandler_Timer2(int IRQ, void *_unused);
+void Timer_IRQHandler_Timer3(int IRQ, void *_unused);
+void Timer_IRQHandler_Timer4(int IRQ, void *_unused);
void Time_Setup(void);
+tTime Time_GetTickOffset(void); // TODO: move to header
// === GLOBALS ===
// - Addresses for the GIC to use
-tPAddr gGIC_InterfaceAddr = 0x50040000;
-tPAddr gGIC_DistributorAddr = 0x50041000;
+tPAddr gGIC_InterfaceAddr = GICI_PADDR;
+tPAddr gGIC_DistributorAddr = GICD_PADDR;
// - Map of timer registers
volatile struct sTimersMap *gpTimersMap;
volatile struct sClockResetMap *gpClockResetMap;
{
giTimestamp += 100;
gpTimersMap->TMR1.PCR_0 = (1<<30);
+ Timer_CallTimers();
+}
+
+void Timer_IRQHandler_Timer2(int IRQ, void *_unused)
+{
+ Log_Debug("Tegra2Tme", "Timer 2");
+}
+void Timer_IRQHandler_Timer3(int IRQ, void *_unused)
+{
+ Log_Debug("Tegra2Tme", "Timer 3");
+}
+void Timer_IRQHandler_Timer4(int IRQ, void *_unused)
+{
+ Log_Debug("Tegra2Tme", "Timer 4");
+}
+
+void Time_MicroSleep(Uint16 Microsecs)
+{
+ Uint32 cur_ts = gpTimersMap->TIMERUS.CNTR_1US;
+ Uint32 tgt_ts = cur_ts + Microsecs;
+ if( tgt_ts < cur_ts )
+ while( gpTimersMap->TIMERUS.CNTR_1US > cur_ts )
+ ;
+ while( gpTimersMap->TIMERUS.CNTR_1US < tgt_ts )
+ ;
+}
+
+tTime Time_GetTickOffset(void)
+{
+ return (gpTimersMap->TIMERUS.CNTR_1US/1000) % 100;
}
void Time_Setup(void)
{
gpTimersMap = (void*)MM_MapHWPages(0x60005000, 1);
gpClockResetMap = (void*)MM_MapHWPages(0x60006000, 1);
+
// Timer 1 (used for system timekeeping)
IRQ_AddHandler(0*32+0, Timer_IRQHandler_SysClock, NULL);
+ IRQ_AddHandler(0*32+1, Timer_IRQHandler_Timer2, NULL);
+ IRQ_AddHandler(1*32+9, Timer_IRQHandler_Timer3, NULL);
+ IRQ_AddHandler(1*32+10, Timer_IRQHandler_Timer4, NULL);
gpTimersMap->TMR1.PTV_0 = (1<<31)|(1<<30)|(100*1000-1); // enable, periodic, 100 ms
gpTimersMap->TMR1.PCR_0 = (1<<30);
Log_Debug("Tegra2Tme", "TMR0.PCR = 0x%x", gpTimersMap->TMR1.PCR_0);