max80_fw/fw/irq.h

#ifndef IRQ_H
#define IRQ_H

#include <stddef.h>

#include "picorv32.h"

typedef void (*irqhandler_t)(unsigned int vector, size_t pc);
extern irqhandler_t __irq_handler_table[];

#define IRQHANDLER(x) \
  void irqhandler_ ##x (unsigned int, size_t);			     \
  void irqhandler_ ##x (unsigned int vector __attribute__((unused)), \
			size_t pc __attribute__((unused)))

static inline unsigned int disable_irqs(void)
{
    return p_maskirq(~0U, 0);
}
static inline unsigned int restore_irqs(unsigned int mask)
{
    return p_maskirq(mask, 0);
}
static inline unsigned int mask_irqs(unsigned int mask)
{
    return p_maskirq(mask, ~mask);
}
static inline unsigned int mask_irq(unsigned int vector)
{
    return mask_irqs(1U << vector);
}
static inline unsigned int unmask_irqs(unsigned int mask)
{
    return p_maskirq(0, ~mask);
}
static inline unsigned int unmask_irq(unsigned int vector)
{
    return unmask_irqs(1U << vector);
}
static inline unsigned int irqmask(void)
{
    return p_maskirq(0, ~0);
}

static inline unsigned int waitfor(unsigned int vector)
{
    const unsigned int mask = 1U << vector;
    return p_waitirq(mask, 0);
}

/* Wait for any enabled IRQ */
static inline unsigned int wait_for_irq(void)
{
    unsigned int mask = irqmask();
    return p_waitirq(mask, mask);
}

#endif /* IRQ_H */