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 * It's probably better to use the TYPE_SPLIT_IRQ device instead. 55 */ 56 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); 57 58 /* Returns a new IRQ set which connects 1:1 to another IRQ set, which 59 * may be set later. 60 */ 61 qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); 62 63 /* For internal use in qtest. Similar to qemu_irq_split, but operating 64 on an existing vector of qemu_irq. */ 65 void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); 66 67 #endif 68