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authorRalf Corsepius <ralf.corsepius@rtems.org>2009-11-30 05:09:41 +0000
committerRalf Corsepius <ralf.corsepius@rtems.org>2009-11-30 05:09:41 +0000
commit359e5374164ccb2a66833354b412a859c144ea2f (patch)
tree6f065d7d6247bc255f43ddb0152fc26c50bd4f87 /c/src/lib/libcpu/powerpc/ppc403/clock/clock.c
parentWhitespace removal. (diff)
downloadrtems-359e5374164ccb2a66833354b412a859c144ea2f.tar.bz2
Whitespace removal.
Diffstat (limited to 'c/src/lib/libcpu/powerpc/ppc403/clock/clock.c')
-rw-r--r--c/src/lib/libcpu/powerpc/ppc403/clock/clock.c90
1 files changed, 45 insertions, 45 deletions
diff --git a/c/src/lib/libcpu/powerpc/ppc403/clock/clock.c b/c/src/lib/libcpu/powerpc/ppc403/clock/clock.c
index afd282acdb..c9d9243b52 100644
--- a/c/src/lib/libcpu/powerpc/ppc403/clock/clock.c
+++ b/c/src/lib/libcpu/powerpc/ppc403/clock/clock.c
@@ -67,7 +67,7 @@ static uint32_t pit_value, tick_time;
static bool auto_restart;
void Clock_exit( void );
-
+
rtems_isr_entry set_vector( /* returns old vector */
rtems_isr_entry handler, /* isr routine */
rtems_vector_number vector, /* vector number */
@@ -77,10 +77,10 @@ rtems_isr_entry set_vector( /* returns old vector */
/*
* These are set by clock driver during its init
*/
-
+
rtems_device_major_number rtems_clock_major = ~0;
rtems_device_minor_number rtems_clock_minor;
-
+
static inline uint32_t get_itimer(void)
{
register uint32_t rc;
@@ -117,10 +117,10 @@ void Clock_isr(void* handle)
* setup for next interrupt; making sure the new value is reasonably
* in the future.... in case we lost out on an interrupt somehow
*/
-
+
itimer_value = get_itimer();
tick_time += pit_value;
-
+
/*
* how far away is next interrupt *really*
* It may be a long time; this subtraction works even if
@@ -128,42 +128,42 @@ void Clock_isr(void* handle)
* the miracle of unsigned math.
*/
clicks_til_next_interrupt = tick_time - itimer_value;
-
+
/*
* If it is too soon then bump it up.
* This should only happen if CPU_HPPA_CLICKS_PER_TICK is too small.
* But setting it low is useful for debug, so...
*/
-
+
if (clicks_til_next_interrupt < 400)
{
tick_time = itimer_value + 1000;
clicks_til_next_interrupt = 1000;
/* XXX: count these! this should be rare */
}
-
+
/*
* If it is too late, that means we missed the interrupt somehow.
* Rather than wait 35-50s for a wrap, we just fudge it here.
*/
-
+
if (clicks_til_next_interrupt > pit_value)
{
tick_time = itimer_value + 1000;
clicks_til_next_interrupt = 1000;
/* XXX: count these! this should never happen :-) */
}
-
- asm volatile ("mtspr 0x3db, %0" :: "r"
+
+ asm volatile ("mtspr 0x3db, %0" :: "r"
(clicks_til_next_interrupt)); /* PIT */
}
-
+
asm volatile ( "mtspr 0x3d8, %0" :: "r" (0x08000000)); /* TSR */
-
+
Clock_driver_ticks++;
/* Give BSP a chance to say if they want to re-enable interrupts */
-
+
#if defined(BSP_PPC403_CLOCK_ISR_IRQ_LEVEL)
_ISR_Set_level(BSP_PPC403_CLOCK_ISR_IRQ_LEVEL);
#endif
@@ -183,9 +183,9 @@ void Clock_isr(void* handle)
int ClockIsOn(const rtems_irq_connect_data* unused)
{
register uint32_t tcr;
-
+
asm volatile ("mfspr %0, 0x3da" : "=r" ((tcr))); /* TCR */
-
+
return (tcr & 0x04000000) != 0;
}
#endif
@@ -199,12 +199,12 @@ void ClockOff(
)
{
register uint32_t tcr;
-
+
asm volatile ("mfspr %0, 0x3da" : "=r" ((tcr))); /* TCR */
-
+
tcr &= ~ 0x04400000;
-
- asm volatile ("mtspr 0x3da, %0" : "=r" ((tcr)) : "0" ((tcr))); /* TCR */
+
+ asm volatile ("mtspr 0x3da, %0" : "=r" ((tcr)) : "0" ((tcr))); /* TCR */
}
void ClockOn(
@@ -222,9 +222,9 @@ void ClockOn(
#ifdef ppc403
uint32_t pvr;
#endif /* ppc403 */
-
+
Clock_driver_ticks = 0;
-
+
#ifndef ppc405 /* this is a ppc403 */
asm volatile ("mfdcr %0, 0xa0" : "=r" (iocr)); /* IOCR */
if (bsp_timer_internal_clock) {
@@ -234,21 +234,21 @@ void ClockOn(
iocr |= 4; /* select external timer clock */
}
asm volatile ("mtdcr 0xa0, %0" : "=r" (iocr) : "0" (iocr)); /* IOCR */
-
+
asm volatile ("mfspr %0, 0x11f" : "=r" ((pvr))); /* PVR */
if (((pvr & 0xffff0000) >> 16) != 0x0020)
return; /* Not a ppc403 */
-
+
if ((pvr & 0xff00) == 0x0000) /* 403GA */
#if 0 /* FIXME: in which processor versions will "autoload" work properly? */
auto_restart = (pvr & 0x00f0) > 0x0000 ? true : false;
-#else
+#else
/* no known chip version supports auto restart of timer... */
auto_restart = false;
#endif
else if ((pvr & 0xff00) == 0x0100) /* 403GB */
auto_restart = true;
-
+
#else /* ppc405 */
asm volatile ("mfdcr %0, 0x0b2" : "=r" (iocr)); /*405GP CPC0_CR1 */
if (bsp_timer_internal_clock) {
@@ -268,20 +268,20 @@ void ClockOn(
#endif /* ppc405 */
pit_value = rtems_configuration_get_microseconds_per_tick() *
bsp_clicks_per_usec;
-
+
/*
* Set PIT value
*/
asm volatile ("mtspr 0x3db, %0" : : "r" (pit_value)); /* PIT */
-
- /*
+
+ /*
* Set timer to autoreload, bit TCR->ARE = 1 0x0400000
* Enable PIT interrupt, bit TCR->PIE = 1 0x4000000
*/
tick_time = get_itimer() + pit_value;
- asm volatile ("mfspr %0, 0x3da" : "=r" ((tcr))); /* TCR */
+ asm volatile ("mfspr %0, 0x3da" : "=r" ((tcr))); /* TCR */
tcr = (tcr & ~0x04400000) | (auto_restart ? 0x04400000 : 0x04000000);
#if 1
asm volatile ("mtspr 0x3da, %0" : "=r" ((tcr)) : "0" ((tcr))); /* TCR */
@@ -304,9 +304,9 @@ void Install_clock(
#ifdef ppc403
uint32_t pvr;
#endif /* ppc403 */
-
+
Clock_driver_ticks = 0;
-
+
/*
* initialize the interval here
* First tick is set to right amount of time in the future
@@ -355,9 +355,9 @@ ReInstall_clock(
)
{
uint32_t isrlevel = 0;
-
+
rtems_interrupt_disable(isrlevel);
-
+
#if PPC_HAS_CLASSIC_EXCEPTIONS
{
rtems_isr_entry previous_isr;
@@ -372,15 +372,15 @@ ReInstall_clock(
#else
{
rtems_irq_connect_data clockIrqConnData;
-
+
clockIrqConnData.name = BSP_PIT;
if (!BSP_get_current_rtems_irq_handler(&clockIrqConnData)) {
printk("Unable to stop system clock\n");
rtems_fatal_error_occurred(1);
}
-
+
BSP_remove_rtems_irq_handler (&clockIrqConnData);
-
+
clockIrqConnData.on = ClockOn;
clockIrqConnData.off = ClockOff;
clockIrqConnData.isOn = ClockIsOn;
@@ -402,15 +402,15 @@ ReInstall_clock(
* Called via atexit()
* Remove the clock interrupt handler by setting handler to NULL
*
- * This will not work on the 405GP because
- * when bit's are set in TCR they can only be unset by a reset
+ * This will not work on the 405GP because
+ * when bit's are set in TCR they can only be unset by a reset
*/
void Clock_exit(void)
{
#if PPC_HAS_CLASSIC_EXCEPTIONS
ClockOff();
-
+
(void) set_vector(0, PPC_IRQ_PIT, 1);
#elif defined(BSP_PPC403_CLOCK_HOOK_EXCEPTION)
ClockOff();
@@ -418,13 +418,13 @@ void Clock_exit(void)
#else
{
rtems_irq_connect_data clockIrqConnData;
-
+
clockIrqConnData.name = BSP_PIT;
if (!BSP_get_current_rtems_irq_handler(&clockIrqConnData)) {
printk("Unable to stop system clock\n");
rtems_fatal_error_occurred(1);
}
-
+
BSP_remove_rtems_irq_handler (&clockIrqConnData);
}
#endif
@@ -437,13 +437,13 @@ rtems_device_driver Clock_initialize(
)
{
Install_clock( Clock_isr );
-
+
/*
* make major/minor avail to others such as shared memory driver
*/
-
+
rtems_clock_major = major;
rtems_clock_minor = minor;
-
+
return RTEMS_SUCCESSFUL;
}