pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 1 | #ifndef QEMU_IRQ_H |
| 2 | #define QEMU_IRQ_H |
| 3 | |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 4 | /* Generic IRQ/GPIO pin infrastructure. */ |
| 5 | |
| 6 | typedef void (*qemu_irq_handler)(void *opaque, int n, int level); |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 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 | |
balrog | 106627d | 2007-12-05 03:23:39 +0000 | [diff] [blame] | 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 | |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 26 | /* Returns an array of N IRQs. */ |
| 27 | qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n); |
aliguori | 51bf9e7 | 2009-02-11 15:21:04 +0000 | [diff] [blame] | 28 | void qemu_free_irqs(qemu_irq *s); |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 29 | |
balrog | b50a656 | 2007-10-29 10:59:29 +0000 | [diff] [blame] | 30 | /* Returns a new IRQ with opposite polarity. */ |
| 31 | qemu_irq qemu_irq_invert(qemu_irq irq); |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 32 | |
Peter Maydell | 9793212 | 2011-02-21 20:57:52 +0000 | [diff] [blame] | 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 | |
Avi Kivity | 22ec328 | 2011-09-18 15:58:26 +0300 | [diff] [blame] | 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 | |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 41 | #endif |