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2006-05-31 Joel Sherrill <joel@OARcorp.com>

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* at91rm9200/clock/clock.c: Convert to using shared clock driver shell.
This commit is contained in:
Joel Sherrill
2006-05-31 13:46:23 +00:00
parent 2ba4b723d0
commit 5c89efae6a
2 changed files with 57 additions and 102 deletions
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4
c/src/lib/libcpu/arm/ChangeLog
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@@ -1,3 +1,7 @@
2006-05-31 Joel Sherrill <joel@OARcorp.com>
* at91rm9200/clock/clock.c: Convert to using shared clock driver shell.
2006-05-16 Ralf Corsépius <ralf.corsepius@rtems.org> 2006-05-16 Ralf Corsépius <ralf.corsepius@rtems.org>
* configure.ac: Use RTEMS_AMPOLISH3. * configure.ac: Use RTEMS_AMPOLISH3.

155
c/src/lib/libcpu/arm/at91rm9200/clock/clock.c
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@@ -24,110 +24,8 @@
#include <at91rm9200_pmc.h> #include <at91rm9200_pmc.h>
rtems_device_major_number rtems_clock_major = ~0;
rtems_device_minor_number rtems_clock_minor;
volatile uint32_t Clock_driver_ticks;
static unsigned long st_pimr_reload; static unsigned long st_pimr_reload;
rtems_isr clock_isr(rtems_vector_number vector);
void Clock_exit(void);
static void clock_isr_on(const rtems_irq_connect_data *unused);
static void clock_isr_off(const rtems_irq_connect_data *unused);
static int clock_isr_is_on(const rtems_irq_connect_data *irq);
/* Replace the first value with the clock's interrupt name. */
rtems_irq_connect_data clock_isr_data = {AT91RM9200_INT_SYSIRQ,
(rtems_irq_hdl)clock_isr,
clock_isr_on,
clock_isr_off,
clock_isr_is_on,
3, /* unused for ARM cpus */
0 }; /* unused for ARM cpus */
rtems_isr clock_isr(rtems_vector_number vector)
{
uint32_t st_str;
Clock_driver_ticks++;
/* read the status to clear the int */
st_str = ST_REG(ST_SR);
rtems_clock_tick();
}
void Install_clock(rtems_isr_entry clock_isr)
{
uint32_t st_str;
int slck;
Clock_driver_ticks = 0;
BSP_install_rtems_irq_handler(&clock_isr_data);
/* the system timer is driven from SLCK */
slck = at91rm9200_get_slck();
st_pimr_reload = (((BSP_Configuration.microseconds_per_tick * slck) + (1000000/2))/
1000000);
/* read the status to clear the int */
st_str = ST_REG(ST_SR);
/* set priority */
AIC_SMR_REG(AIC_SMR_SYSIRQ) = AIC_SMR_PRIOR(0x7);
/* set the timer value */
ST_REG(ST_PIMR) = st_pimr_reload;
atexit( Clock_exit );
}
void Clock_exit( void )
{
BSP_remove_rtems_irq_handler(&clock_isr_data);
}
rtems_device_driver Clock_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
Install_clock( clock_isr );
rtems_clock_major = major;
rtems_clock_minor = minor;
return RTEMS_SUCCESSFUL;
}
rtems_device_driver Clock_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
uint32_t isrlevel;
rtems_libio_ioctl_args_t *args = pargp;
if (args == 0) {
return RTEMS_SUCCESSFUL;
}
if (args->command == rtems_build_name('I', 'S', 'R', ' ')) {
clock_isr(0);
} else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) {
rtems_interrupt_disable(isrlevel);
BSP_install_rtems_irq_handler(args->buffer);
rtems_interrupt_enable(isrlevel);
}
return RTEMS_SUCCESSFUL;
}
/** /**
* Enables clock interrupt. * Enables clock interrupt.
* *
@@ -162,3 +60,56 @@ static int clock_isr_is_on(const rtems_irq_connect_data *irq)
/* check timer interrupt */ /* check timer interrupt */
return ST_REG(ST_IMR) & ST_SR_PITS; return ST_REG(ST_IMR) & ST_SR_PITS;
} }
rtems_isr Clock_isr(rtems_vector_number vector);
/* Replace the first value with the clock's interrupt name. */
rtems_irq_connect_data clock_isr_data = {AT91RM9200_INT_SYSIRQ,
(rtems_irq_hdl)Clock_isr,
clock_isr_on,
clock_isr_off,
clock_isr_is_on,
3, /* unused for ARM cpus */
0 }; /* unused for ARM cpus */
#define Clock_driver_support_install_isr( _new, _old ) \
BSP_install_rtems_irq_handler(&clock_isr_data)
void Clock_driver_support_initialize_hardware(void)
{
uint32_t st_str;
int slck;
/* the system timer is driven from SLCK */
slck = at91rm9200_get_slck();
st_pimr_reload =
(((BSP_Configuration.microseconds_per_tick * slck) + (1000000/2))/ 1000000);
/* read the status to clear the int */
st_str = ST_REG(ST_SR);
/* set priority */
AIC_SMR_REG(AIC_SMR_SYSIRQ) = AIC_SMR_PRIOR(0x7);
/* set the timer value */
ST_REG(ST_PIMR) = st_pimr_reload;
}
#define CLOCK_VECTOR 0
#define Clock_driver_support_at_tick() \
do { \
uint32_t st_str; \
\
/* read the status to clear the int */ \
st_str = ST_REG(ST_SR); \
} while (0)
void Clock_driver_support_shutdown_hardware( void )
{
BSP_remove_rtems_irq_handler(&clock_isr_data);
}
#include "../../../../libbsp/shared/clockdrv_shell.c"