root / hw / irq.h @ 95499a1d
History | View | Annotate | Download (821 Bytes)
1 | 87ecb68b | pbrook | #ifndef QEMU_IRQ_H
|
---|---|---|---|
2 | 87ecb68b | pbrook | #define QEMU_IRQ_H
|
3 | 87ecb68b | pbrook | |
4 | d537cf6c | pbrook | /* Generic IRQ/GPIO pin infrastructure. */
|
5 | d537cf6c | pbrook | |
6 | d537cf6c | pbrook | typedef void (*qemu_irq_handler)(void *opaque, int n, int level); |
7 | d537cf6c | pbrook | |
8 | d537cf6c | pbrook | void qemu_set_irq(qemu_irq irq, int level); |
9 | d537cf6c | pbrook | |
10 | d537cf6c | pbrook | static inline void qemu_irq_raise(qemu_irq irq) |
11 | d537cf6c | pbrook | { |
12 | d537cf6c | pbrook | qemu_set_irq(irq, 1);
|
13 | d537cf6c | pbrook | } |
14 | d537cf6c | pbrook | |
15 | d537cf6c | pbrook | static inline void qemu_irq_lower(qemu_irq irq) |
16 | d537cf6c | pbrook | { |
17 | d537cf6c | pbrook | qemu_set_irq(irq, 0);
|
18 | d537cf6c | pbrook | } |
19 | d537cf6c | pbrook | |
20 | 106627d0 | balrog | static inline void qemu_irq_pulse(qemu_irq irq) |
21 | 106627d0 | balrog | { |
22 | 106627d0 | balrog | qemu_set_irq(irq, 1);
|
23 | 106627d0 | balrog | qemu_set_irq(irq, 0);
|
24 | 106627d0 | balrog | } |
25 | 106627d0 | balrog | |
26 | d537cf6c | pbrook | /* Returns an array of N IRQs. */
|
27 | d537cf6c | pbrook | qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n); |
28 | 51bf9e7e | aliguori | void qemu_free_irqs(qemu_irq *s);
|
29 | d537cf6c | pbrook | |
30 | b50a6563 | balrog | /* Returns a new IRQ with opposite polarity. */
|
31 | b50a6563 | balrog | qemu_irq qemu_irq_invert(qemu_irq irq); |
32 | 87ecb68b | pbrook | |
33 | 9793212b | Peter Maydell | /* Returns a new IRQ which feeds into both the passed IRQs */
|
34 | 9793212b | Peter Maydell | qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); |
35 | 9793212b | Peter Maydell | |
36 | 87ecb68b | pbrook | #endif |