Architecture-specific IRQ APIs

Functions
static bool	arch_is_in_isr (void)
static unsigned int	arch_irq_lock (void)
static void	arch_irq_unlock (unsigned int key)
static bool	arch_irq_unlocked (unsigned int key)
void	arch_irq_disable (unsigned int irq)
void	arch_irq_enable (unsigned int irq)
int	arch_irq_is_enabled (unsigned int irq)
int	arch_irq_connect_dynamic (unsigned int irq, unsigned int priority, void(*routine)(const void *parameter), const void *parameter, uint32_t flags)

Detailed Description

Function Documentation

arch_irq_connect_dynamic()

int arch_irq_connect_dynamic	(	unsigned int	irq,
		unsigned int	priority,
		void(*)(const void *parameter)	routine,
		const void *	parameter,
		uint32_t	flags
	)

#include <include/sys/arch_interface.h>

Arch-specific hook to install a dynamic interrupt.

Parameters

irq	IRQ line number
priority	Interrupt priority
routine	Interrupt service routine
parameter	ISR parameter
flags	Arch-specific IRQ configuration flag

Returns

The vector assigned to this interrupt

arch_irq_disable()

void arch_irq_disable

(

unsigned int

irq

)

#include <include/sys/arch_interface.h>

Disable the specified interrupt line

Note

: The behavior of interrupts that arrive after this call returns and before the corresponding call to arch_irq_enable() is undefined. The hardware is not required to latch and deliver such an interrupt, though on some architectures that may work. Other architectures will simply lose such an interrupt and never deliver it. Many drivers and subsystems are not tolerant of such dropped interrupts and it is the job of the application layer to ensure that behavior remains correct.

See also

irq_disable()

arch_irq_enable()

void arch_irq_enable

(

unsigned int

irq

)

#include <include/sys/arch_interface.h>

Enable the specified interrupt line

See also

irq_enable()

arch_irq_is_enabled()

int arch_irq_is_enabled

(

unsigned int

irq

)

#include <include/sys/arch_interface.h>

Test if an interrupt line is enabled

See also

irq_is_enabled()

arch_irq_lock()

static unsigned int arch_irq_lock ( void  )

inlinestatic

#include <include/sys/arch_interface.h>

Lock interrupts on the current CPU

See also

irq_lock()

arch_irq_unlock()

static void arch_irq_unlock ( unsigned int  key )

inlinestatic

#include <include/sys/arch_interface.h>

Unlock interrupts on the current CPU

See also

irq_unlock()

arch_irq_unlocked()

static bool arch_irq_unlocked ( unsigned int  key )

inlinestatic

#include <include/sys/arch_interface.h>

Test if calling arch_irq_unlock() with this key would unlock irqs

Parameters

key	value returned by arch_irq_lock()

Returns

true if interrupts were unlocked prior to the arch_irq_lock() call that produced the key argument.

arch_is_in_isr()

static bool arch_is_in_isr ( void  )

inlinestatic

#include <kernel/include/kernel_arch_interface.h>

Test if the current context is in interrupt context

XXX: This is inconsistently handled among arches wrt exception context See: #17656

Returns

true if we are in interrupt context