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 | |
Igor Mammedov | 5202ef9 | 2012-10-16 03:57:21 +0200 | [diff] [blame] | 6 | typedef struct IRQState *qemu_irq; |
| 7 | |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 8 | typedef void (*qemu_irq_handler)(void *opaque, int n, int level); |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 9 | |
| 10 | void qemu_set_irq(qemu_irq irq, int level); |
| 11 | |
| 12 | static inline void qemu_irq_raise(qemu_irq irq) |
| 13 | { |
| 14 | qemu_set_irq(irq, 1); |
| 15 | } |
| 16 | |
| 17 | static inline void qemu_irq_lower(qemu_irq irq) |
| 18 | { |
| 19 | qemu_set_irq(irq, 0); |
| 20 | } |
| 21 | |
balrog | 106627d | 2007-12-05 03:23:39 +0000 | [diff] [blame] | 22 | static inline void qemu_irq_pulse(qemu_irq irq) |
| 23 | { |
| 24 | qemu_set_irq(irq, 1); |
| 25 | qemu_set_irq(irq, 0); |
| 26 | } |
| 27 | |
Peter A. G. Crosthwaite | 1e5b31e | 2012-07-31 12:24:06 +1000 | [diff] [blame] | 28 | /* Returns an array of N IRQs. Each IRQ is assigned the argument handler and |
| 29 | * opaque data. |
| 30 | */ |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 31 | qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n); |
Peter A. G. Crosthwaite | 1e5b31e | 2012-07-31 12:24:06 +1000 | [diff] [blame] | 32 | |
| 33 | /* Extends an Array of IRQs. Old IRQs have their handlers and opaque data |
| 34 | * preserved. New IRQs are assigned the argument handler and opaque data. |
| 35 | */ |
| 36 | qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler, |
| 37 | void *opaque, int n); |
| 38 | |
aliguori | 51bf9e7 | 2009-02-11 15:21:04 +0000 | [diff] [blame] | 39 | void qemu_free_irqs(qemu_irq *s); |
pbrook | d537cf6 | 2007-04-07 18:14:41 +0000 | [diff] [blame] | 40 | |
balrog | b50a656 | 2007-10-29 10:59:29 +0000 | [diff] [blame] | 41 | /* Returns a new IRQ with opposite polarity. */ |
| 42 | qemu_irq qemu_irq_invert(qemu_irq irq); |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 43 | |
Peter Maydell | 9793212 | 2011-02-21 20:57:52 +0000 | [diff] [blame] | 44 | /* Returns a new IRQ which feeds into both the passed IRQs */ |
| 45 | qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); |
| 46 | |
Avi Kivity | 22ec328 | 2011-09-18 15:58:26 +0300 | [diff] [blame] | 47 | /* Returns a new IRQ set which connects 1:1 to another IRQ set, which |
| 48 | * may be set later. |
| 49 | */ |
| 50 | qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); |
| 51 | |
Paolo Bonzini | 2028834 | 2012-03-28 15:42:03 +0200 | [diff] [blame] | 52 | /* For internal use in qtest. Similar to qemu_irq_split, but operating |
| 53 | on an existing vector of qemu_irq. */ |
| 54 | void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); |
| 55 | void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n); |
| 56 | |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 57 | #endif |