Kernel - Fixed compilation of x86_64 and armv7

[tpg/acess2.git] / KernelLand / Kernel / arch / x86_64 / time.c

diff --git a/KernelLand/Kernel/arch/x86_64/time.c b/KernelLand/Kernel/arch/x86_64/time.c
index 03c889f..fabd928 100644 (file)
--- a/KernelLand/Kernel/arch/x86_64/time.c
+++ b/KernelLand/Kernel/arch/x86_64/time.c
@@ -5,12 +5,14 @@
  */
 #include <acess.h>
 #include <arch_config.h>
+#include <timers.h>
 
 // === MACROS ===
 #define        TIMER_QUANTUM   100
 #define TIMER_FREQ     PIT_TIMER_BASE_N/(PIT_TIMER_BASE_D*PIT_TIMER_DIVISOR)
 #define MS_PER_TICK_WHOLE      (1000*(PIT_TIMER_BASE_D*PIT_TIMER_DIVISOR)/PIT_TIMER_BASE_N)
 #define MS_PER_TICK_FRACT      ((0x80000000ULL*1000ULL*PIT_TIMER_BASE_D*PIT_TIMER_DIVISOR/PIT_TIMER_BASE_N)&0x7FFFFFFF)
+#define US_PER_TICK    (1000*1000/(TIMER_FREQ))
 
 // === IMPORTS ===
 extern volatile Sint64 giTimestamp;
@@ -103,6 +105,21 @@ void Time_TimerThread(void)
 }
 #endif
 
+void Time_MicroSleep(Uint16 Microsecs) // max 64 ms
+{
+       Uint64  cur_tsc = Time_ReadTSC();
+       // tsc_per_us * Microsec
+       Uint64  delta_tsc = (Uint64)Microsecs * giTime_TSCPerTick / US_PER_TICK;
+       Uint64  tgt_tsc = cur_tsc + delta_tsc;
+
+       if( tgt_tsc < cur_tsc )
+               while(Time_ReadTSC() > cur_tsc)
+                       ;       
+
+       while( Time_ReadTSC() < tgt_tsc )
+               ;
+}
+
 Uint64 Time_ReadTSC(void)
 {
        Uint32  a, d;