irq.h File Reference

#include <stdbool.h>
#include <stdint.h>
#include <pbl/kernel/compiler.h>
#include <pbl_arch_irq.h>

Macros
#define	PBL_IRQ_PRIO_KERNEL   CONFIG_KERNEL_IRQ_PRIO_KERNEL
	NVIC priority of the kernel's own interrupts (tick, context switch).
#define	PBL_IRQ_PRIO_MAX_SYSCALL   CONFIG_KERNEL_IRQ_PRIO_MAX_SYSCALL
	Most urgent NVIC priority from which kernel calls are allowed.
#define	PBL_IRQN(line)   ((pbl_irq_t)PBL_SOC_IRQN_##line)
	Number of a SoC interrupt line from soc_irqs.h.
#define	PBL_IRQ_ZERO_LATENCY   (1U << 0)
	Flag for an ISR that runs above PBL_IRQ_PRIO_MAX_SYSCALL.
#define	PBL_IRQ_CONNECT(line, prio, isr, arg, flags)    ARCH_IRQ_CONNECT(PBL_SOC_IRQN_##line, #line, prio, isr, arg, flags)
	Bind a SoC interrupt line to a handler at build time.
#define	PBL_IRQ_CONNECT_NUM(n, prio, isr, arg, flags)   ARCH_IRQ_CONNECT(n, #n, prio, isr, arg, flags)
	PBL_IRQ_CONNECT() with the line given by number, for generated code.
#define	PBL_IRQ_DIRECT(line, prio, flags)   ARCH_IRQ_DIRECT(PBL_SOC_IRQN_##line, #line, prio, flags)
	Bind a SoC interrupt line to the handler body that follows the macro.

Typedefs
typedef uint16_t	pbl_irq_t
	Line of the SoC interrupt controller.

Functions
void	pbl_irq_lock (void)
	Mask interrupts up to PBL_IRQ_PRIO_MAX_SYSCALL.
void	pbl_irq_unlock (void)
	Undo one pbl_irq_lock(), unmasking interrupts at the outermost one.
bool	pbl_in_isr (void)
	Check whether the caller runs in interrupt context.
bool	pbl_irq_is_locked (void)
	Check whether pbl_irq_lock() is in effect.
void	pbl_irq_init (void)
	Install the vector table and program the priority of every bound line.
void	pbl_irq_enable (pbl_irq_t irq)
	Enable an interrupt line.
void	pbl_irq_disable (pbl_irq_t irq)
	Disable an interrupt line.
bool	pbl_irq_is_enabled (pbl_irq_t irq)
	Check whether an interrupt line is enabled.
void	pbl_irq_set_pending (pbl_irq_t irq)
	Mark an interrupt line pending, so its handler runs once enabled and unmasked.
void	pbl_irq_clear_pending (pbl_irq_t irq)
	Clear the pending state of an interrupt line.
static unsigned int	pbl_irq_disable_all (void)
	Mask every interrupt, PBL_IRQ_ZERO_LATENCY ones included.
static void	pbl_irq_restore_all (unsigned int key)
	Restore the interrupt mask that pbl_irq_disable_all() replaced.
static bool	pbl_irq_window_pending (unsigned int key)
	Check for an interrupt that pbl_irq_window() would let run.
static void	pbl_irq_window (void)
	Let the pending interrupts run, then mask every interrupt again.