xemu/hw/irq.h
balrog b50a6563d8 Add a qemu_irq_invert() shortcut for inverting a signal.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3485 c046a42c-6fe2-441c-8c8c-71466251a162
2007-10-29 10:59:29 +00:00

24 lines
553 B
C

/* Generic IRQ/GPIO pin infrastructure. */
typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
typedef struct IRQState *qemu_irq;
void qemu_set_irq(qemu_irq irq, int level);
static inline void qemu_irq_raise(qemu_irq irq)
{
qemu_set_irq(irq, 1);
}
static inline void qemu_irq_lower(qemu_irq irq)
{
qemu_set_irq(irq, 0);
}
/* Returns an array of N IRQs. */
qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
/* Returns a new IRQ with opposite polarity. */
qemu_irq qemu_irq_invert(qemu_irq irq);