1 #ifndef QEMU_IRQ_H 2 #define QEMU_IRQ_H 3 4 /* Generic IRQ/GPIO pin infrastructure. */ 5 6 typedef void (*qemu_irq_handler)(void *opaque, int n, int level); 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 /* Extends an Array of IRQs. Old IRQs have their handlers and opaque data 32 * preserved. New IRQs are assigned the argument handler and opaque data. 33 */ 34 qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler, 35 void *opaque, int n); 36 37 void qemu_free_irqs(qemu_irq *s); 38 39 /* Returns a new IRQ with opposite polarity. */ 40 qemu_irq qemu_irq_invert(qemu_irq irq); 41 42 /* Returns a new IRQ which feeds into both the passed IRQs */ 43 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); 44 45 /* Returns a new IRQ set which connects 1:1 to another IRQ set, which 46 * may be set later. 47 */ 48 qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); 49 50 /* For internal use in qtest. Similar to qemu_irq_split, but operating 51 on an existing vector of qemu_irq. */ 52 void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); 53 void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n); 54 55 #endif 56