linux-user: stack_base is now mandatory on all targets
[qemu.git] / hw / irq.h
1 #ifndef QEMU_IRQ_H
2 #define QEMU_IRQ_H
3
4 /* Generic IRQ/GPIO pin infrastructure. */
5
6 typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
7
8 void qemu_set_irq(qemu_irq irq, int level);
9
10 static inline void qemu_irq_raise(qemu_irq irq)
11 {
12 qemu_set_irq(irq, 1);
13 }
14
15 static inline void qemu_irq_lower(qemu_irq irq)
16 {
17 qemu_set_irq(irq, 0);
18 }
19
20 static inline void qemu_irq_pulse(qemu_irq irq)
21 {
22 qemu_set_irq(irq, 1);
23 qemu_set_irq(irq, 0);
24 }
25
26 /* Returns an array of N IRQs. */
27 qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
28 void qemu_free_irqs(qemu_irq *s);
29
30 /* Returns a new IRQ with opposite polarity. */
31 qemu_irq qemu_irq_invert(qemu_irq irq);
32
33 /* Returns a new IRQ which feeds into both the passed IRQs */
34 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
35
36 /* Returns a new IRQ set which connects 1:1 to another IRQ set, which
37 * may be set later.
38 */
39 qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
40
41 #endif