summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libbsp/i386/pc386/timer/timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libbsp/i386/pc386/timer/timer.c')
-rw-r--r--c/src/lib/libbsp/i386/pc386/timer/timer.c66
1 files changed, 33 insertions, 33 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/timer/timer.c b/c/src/lib/libbsp/i386/pc386/timer/timer.c
index db152cffac..3024ac70c7 100644
--- a/c/src/lib/libbsp/i386/pc386/timer/timer.c
+++ b/c/src/lib/libbsp/i386/pc386/timer/timer.c
@@ -79,7 +79,7 @@ extern void timerisr(void);
| Description: Read the value of PENTIUM on-chip cycle counter.
| Global Variables: None.
| Arguments: None.
-| Returns: Value of PENTIUM on-chip cycle counter.
+| Returns: Value of PENTIUM on-chip cycle counter.
+--------------------------------------------------------------------------*/
static inline unsigned long long
rdtsc(void)
@@ -97,7 +97,7 @@ rdtsc(void)
| not really necessary, since there will be a reset at exit.
| Global Variables: None.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Timer_exit(void)
@@ -110,7 +110,7 @@ Timer_exit(void)
| Description: Timer initialization routine.
| Global Variables: Ttimer_val.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Timer_initialize(void)
@@ -132,9 +132,9 @@ Timer_initialize(void)
| Description: Read hardware timer value.
| Global Variables: Ttimer_val, Timer_driver_Find_average_overhead.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
-uint32_t
+uint32_t
Read_timer(void)
{
register uint32_t total;
@@ -163,7 +163,7 @@ Read_timer(void)
| not really necessary, since there will be a reset at exit.
| Global Variables: None.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
static void
timerOff(const rtems_raw_irq_connect_data* used)
@@ -179,7 +179,7 @@ timerOff(const rtems_raw_irq_connect_data* used)
} /* Timer_exit */
-static void
+static void
timerOn(const rtems_raw_irq_connect_data* used)
{
/* load timer for US_PER_ISR microsecond period */
@@ -192,7 +192,7 @@ timerOn(const rtems_raw_irq_connect_data* used)
BSP_irq_enable_at_i8259s(used->idtIndex - BSP_IRQ_VECTOR_BASE);
}
-static int
+static int
timerIsOn(const rtems_raw_irq_connect_data *used)
{
return BSP_irq_enabled_at_i8259s(used->idtIndex - BSP_IRQ_VECTOR_BASE);}
@@ -211,7 +211,7 @@ static rtems_raw_irq_connect_data timer_raw_irq_data = {
| not really necessary, since there will be a reset at exit.
| Global Variables: None.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Timer_exit(void)
@@ -224,7 +224,7 @@ Timer_exit(void)
| Description: Timer initialization routine.
| Global Variables: Ttimer_val.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Timer_initialize(void)
@@ -254,9 +254,9 @@ Timer_initialize(void)
| Description: Read hardware timer value.
| Global Variables: Ttimer_val, Timer_driver_Find_average_overhead.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
-uint32_t
+uint32_t
Read_timer(void)
{
register uint32_t total, clicks;
@@ -284,20 +284,20 @@ Read_timer(void)
| Description: Empty function used in time tests.
| Global Variables: None.
| Arguments: None.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
rtems_status_code Empty_function(void)
{
return RTEMS_SUCCESSFUL;
} /* Empty function */
-
+
/*-------------------------------------------------------------------------+
| Function: Set_find_average_overhead
| Description: Set internal Timer_driver_Find_average_overhead flag value.
| Global Variables: Timer_driver_Find_average_overhead.
| Arguments: find_flag - new value of the flag.
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Set_find_average_overhead(rtems_boolean find_flag)
@@ -321,9 +321,9 @@ void loadTimerValue( unsigned short loadedValue )
/*-------------------------------------------------------------------------+
-| Description: Reads the current value of the timer, and converts the
-| number of ticks to micro-seconds.
-| Returns: number of clock bits elapsed since last load.
+| Description: Reads the current value of the timer, and converts the
+| number of ticks to micro-seconds.
+| Returns: number of clock bits elapsed since last load.
+--------------------------------------------------------------------------*/
unsigned int readTimer0()
{
@@ -338,7 +338,7 @@ unsigned int readTimer0()
count = ( msb << 8 ) | lsb ;
if (status & RB_OUTPUT )
count += lastLoadedValue;
-
+
return (2*lastLoadedValue - count);
}
@@ -372,19 +372,19 @@ Calibrate_loop_1ms(void)
unsigned int targetClockBits, currentClockBits;
unsigned int slowLoopGranularity, fastLoopGranularity;
rtems_interrupt_level level;
-
+
#ifdef DEBUG_CALIBRATE
printk( "Calibrate_loop_1ms is starting, please wait ( but not too loooong. )\n" );
-#endif
+#endif
targetClockBits = US_TO_TICK(1000);
-
+
rtems_interrupt_disable(level);
/*
* Fill up the cache to get a correct offset
*/
Timer0Reset();
readTimer0();
- /*
+ /*
* Compute the minimal offset to apply due to read counter register.
*/
offset = 0xffffffff;
@@ -437,24 +437,24 @@ Calibrate_loop_1ms(void)
while (1);
}
slowLoopGranularity = (res - offset - emptyCall)/ 10;
-
+
if (slowLoopGranularity == 0) {
printk("Problem #3 in Calibrate_loop_1ms in file libbsp/i386/pc386/timer/timer.c\n");
while (1);
}
targetClockBits += offset;
-#ifdef DEBUG_CALIBRATE
+#ifdef DEBUG_CALIBRATE
printk("offset = %u, emptyCall = %u, targetClockBits = %u\n",
offset, emptyCall, targetClockBits);
printk("slowLoopGranularity = %u fastLoopGranularity = %u\n",
slowLoopGranularity, fastLoopGranularity);
-#endif
+#endif
slowLoop1ms = (targetClockBits - emptyCall) / slowLoopGranularity;
if (slowLoop1ms != 0) {
fastLoop1ms = targetClockBits % slowLoopGranularity;
if (fastLoop1ms > emptyCall) fastLoop1ms -= emptyCall;
- }
+ }
else
fastLoop1ms = targetClockBits - emptyCall / fastLoopGranularity;
@@ -462,7 +462,7 @@ Calibrate_loop_1ms(void)
/*
* calibrate slow loop
*/
-
+
while(1)
{
int previousSign = 0; /* 0 = unset, 1 = incrementing, 2 = decrementing */
@@ -497,7 +497,7 @@ Calibrate_loop_1ms(void)
/*
* calibrate fast loop
*/
-
+
if (fastLoopGranularity != 0 ) {
while(1) {
int previousSign = 0; /* 0 = unset, 1 = incrementing, 2 = decrementing */
@@ -525,11 +525,11 @@ Calibrate_loop_1ms(void)
}
}
}
-#ifdef DEBUG_CALIBRATE
+#ifdef DEBUG_CALIBRATE
printk("slowLoop1ms = %u, fastLoop1ms = %u\n", slowLoop1ms, fastLoop1ms);
-#endif
+#endif
rtems_interrupt_enable(level);
-
+
}
/*-------------------------------------------------------------------------+
@@ -537,7 +537,7 @@ Calibrate_loop_1ms(void)
| Description: loop which waits at least timeToWait ms
| Global Variables: loop1ms
| Arguments: timeToWait
-| Returns: Nothing.
+| Returns: Nothing.
+--------------------------------------------------------------------------*/
void
Wait_X_ms( unsigned int timeToWait){
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 23:40:35 +0000