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pbrook87ecb682007-11-17 17:14:51 +00001#ifndef QEMU_IRQ_H
2#define QEMU_IRQ_H
3
pbrookd537cf62007-04-07 18:14:41 +00004/* Generic IRQ/GPIO pin infrastructure. */
5
Igor Mammedov5202ef92012-10-16 03:57:21 +02006typedef struct IRQState *qemu_irq;
7
pbrookd537cf62007-04-07 18:14:41 +00008typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
pbrookd537cf62007-04-07 18:14:41 +00009
10void qemu_set_irq(qemu_irq irq, int level);
11
12static inline void qemu_irq_raise(qemu_irq irq)
13{
14 qemu_set_irq(irq, 1);
15}
16
17static inline void qemu_irq_lower(qemu_irq irq)
18{
19 qemu_set_irq(irq, 0);
20}
21
balrog106627d2007-12-05 03:23:39 +000022static inline void qemu_irq_pulse(qemu_irq irq)
23{
24 qemu_set_irq(irq, 1);
25 qemu_set_irq(irq, 0);
26}
27
Peter A. G. Crosthwaite1e5b31e2012-07-31 12:24:06 +100028/* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
29 * opaque data.
30 */
pbrookd537cf62007-04-07 18:14:41 +000031qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
Peter A. G. Crosthwaite1e5b31e2012-07-31 12:24:06 +100032
33/* Extends an Array of IRQs. Old IRQs have their handlers and opaque data
34 * preserved. New IRQs are assigned the argument handler and opaque data.
35 */
36qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
37 void *opaque, int n);
38
aliguori51bf9e72009-02-11 15:21:04 +000039void qemu_free_irqs(qemu_irq *s);
pbrookd537cf62007-04-07 18:14:41 +000040
balrogb50a6562007-10-29 10:59:29 +000041/* Returns a new IRQ with opposite polarity. */
42qemu_irq qemu_irq_invert(qemu_irq irq);
pbrook87ecb682007-11-17 17:14:51 +000043
Peter Maydell97932122011-02-21 20:57:52 +000044/* Returns a new IRQ which feeds into both the passed IRQs */
45qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
46
Avi Kivity22ec3282011-09-18 15:58:26 +030047/* Returns a new IRQ set which connects 1:1 to another IRQ set, which
48 * may be set later.
49 */
50qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
51
Paolo Bonzini20288342012-03-28 15:42:03 +020052/* For internal use in qtest. Similar to qemu_irq_split, but operating
53 on an existing vector of qemu_irq. */
54void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n);
55void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n);
56
pbrook87ecb682007-11-17 17:14:51 +000057#endif