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 | 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. Each IRQ is assigned the argument handler and |
27 | * opaque data. |
28 | */ |
29 | qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n); |
30 | |
31 | /* |
32 | * Allocates a single IRQ. The irq is assigned with a handler, an opaque |
33 | * data and the interrupt number. |
34 | */ |
35 | qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n); |
36 | |
37 | /* Extends an Array of IRQs. Old IRQs have their handlers and opaque data |
38 | * preserved. New IRQs are assigned the argument handler and opaque data. |
39 | */ |
40 | qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler, |
41 | void *opaque, int n); |
42 | |
43 | void qemu_free_irqs(qemu_irq *s, int n); |
44 | void qemu_free_irq(qemu_irq irq); |
45 | |
46 | /* Returns a new IRQ with opposite polarity. */ |
47 | qemu_irq qemu_irq_invert(qemu_irq irq); |
48 | |
49 | /* Returns a new IRQ which feeds into both the passed IRQs. |
50 | * It's probably better to use the TYPE_SPLIT_IRQ device instead. |
51 | */ |
52 | qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); |
53 | |
54 | /* Returns a new IRQ set which connects 1:1 to another IRQ set, which |
55 | * may be set later. |
56 | */ |
57 | qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); |
58 | |
59 | /* For internal use in qtest. Similar to qemu_irq_split, but operating |
60 | on an existing vector of qemu_irq. */ |
61 | void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); |
62 | |
63 | #endif |
64 | |