apic: move target-dependent definitions to cpu.h
[qemu.git] / include / hw / irq.h
1 #ifndef QEMU_IRQ_H
2 #define QEMU_IRQ_H
3
4 /* Generic IRQ/GPIO pin infrastructure. */
5
6 #define TYPE_IRQ "irq"
7
8 typedef struct IRQState *qemu_irq;
9
10 typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
11
12 void qemu_set_irq(qemu_irq irq, int level);
13
14 static inline void qemu_irq_raise(qemu_irq irq)
15 {
16 qemu_set_irq(irq, 1);
17 }
18
19 static inline void qemu_irq_lower(qemu_irq irq)
20 {
21 qemu_set_irq(irq, 0);
22 }
23
24 static inline void qemu_irq_pulse(qemu_irq irq)
25 {
26 qemu_set_irq(irq, 1);
27 qemu_set_irq(irq, 0);
28 }
29
30 /* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
31 * opaque data.
32 */
33 qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
34
35 /*
36 * Allocates a single IRQ. The irq is assigned with a handler, an opaque
37 * data and the interrupt number.
38 */
39 qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n);
40
41 /* Extends an Array of IRQs. Old IRQs have their handlers and opaque data
42 * preserved. New IRQs are assigned the argument handler and opaque data.
43 */
44 qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
45 void *opaque, int n);
46
47 void qemu_free_irqs(qemu_irq *s, int n);
48 void qemu_free_irq(qemu_irq irq);
49
50 /* Returns a new IRQ with opposite polarity. */
51 qemu_irq qemu_irq_invert(qemu_irq irq);
52
53 /* Returns a new IRQ which feeds into both the passed IRQs */
54 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
55
56 /* Returns a new IRQ set which connects 1:1 to another IRQ set, which
57 * may be set later.
58 */
59 qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
60
61 /* For internal use in qtest. Similar to qemu_irq_split, but operating
62 on an existing vector of qemu_irq. */
63 void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n);
64
65 #endif