blob: 7a40e3ed263bcac717d5db93817c108898f909c8 [file] [log] [blame]
#ifndef QEMU_IRQ_H
#define QEMU_IRQ_H
/* Generic IRQ/GPIO pin infrastructure. */
#define TYPE_IRQ "irq"
typedef struct IRQState *qemu_irq;
typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
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);
static inline void qemu_irq_pulse(qemu_irq irq)
qemu_set_irq(irq, 1);
qemu_set_irq(irq, 0);
/* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
* opaque data.
qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
* Allocates a single IRQ. The irq is assigned with a handler, an opaque
* data and the interrupt number.
qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n);
/* Extends an Array of IRQs. Old IRQs have their handlers and opaque data
* preserved. New IRQs are assigned the argument handler and opaque data.
qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
void *opaque, int n);
void qemu_free_irqs(qemu_irq *s, int n);
void qemu_free_irq(qemu_irq irq);
/* Returns a new IRQ with opposite polarity. */
qemu_irq qemu_irq_invert(qemu_irq irq);
/* Returns a new IRQ which feeds into both the passed IRQs.
* It's probably better to use the TYPE_SPLIT_IRQ device instead.
qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
/* Returns a new IRQ set which connects 1:1 to another IRQ set, which
* may be set later.
qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
/* For internal use in qtest. Similar to qemu_irq_split, but operating
on an existing vector of qemu_irq. */
void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n);