10d09e41aSPaolo Bonzini #ifndef QEMU_IRQ_H 20d09e41aSPaolo Bonzini #define QEMU_IRQ_H 30d09e41aSPaolo Bonzini 40d09e41aSPaolo Bonzini /* Generic IRQ/GPIO pin infrastructure. */ 50d09e41aSPaolo Bonzini 60d09e41aSPaolo Bonzini typedef struct IRQState *qemu_irq; 70d09e41aSPaolo Bonzini 80d09e41aSPaolo Bonzini typedef void (*qemu_irq_handler)(void *opaque, int n, int level); 90d09e41aSPaolo Bonzini 100d09e41aSPaolo Bonzini void qemu_set_irq(qemu_irq irq, int level); 110d09e41aSPaolo Bonzini 120d09e41aSPaolo Bonzini static inline void qemu_irq_raise(qemu_irq irq) 130d09e41aSPaolo Bonzini { 140d09e41aSPaolo Bonzini qemu_set_irq(irq, 1); 150d09e41aSPaolo Bonzini } 160d09e41aSPaolo Bonzini 170d09e41aSPaolo Bonzini static inline void qemu_irq_lower(qemu_irq irq) 180d09e41aSPaolo Bonzini { 190d09e41aSPaolo Bonzini qemu_set_irq(irq, 0); 200d09e41aSPaolo Bonzini } 210d09e41aSPaolo Bonzini 220d09e41aSPaolo Bonzini static inline void qemu_irq_pulse(qemu_irq irq) 230d09e41aSPaolo Bonzini { 240d09e41aSPaolo Bonzini qemu_set_irq(irq, 1); 250d09e41aSPaolo Bonzini qemu_set_irq(irq, 0); 260d09e41aSPaolo Bonzini } 270d09e41aSPaolo Bonzini 280d09e41aSPaolo Bonzini /* Returns an array of N IRQs. Each IRQ is assigned the argument handler and 290d09e41aSPaolo Bonzini * opaque data. 300d09e41aSPaolo Bonzini */ 310d09e41aSPaolo Bonzini qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n); 320d09e41aSPaolo Bonzini 33*a8a9d30bSMarcel Apfelbaum /* 34*a8a9d30bSMarcel Apfelbaum * Allocates a single IRQ. The irq is assigned with a handler, an opaque 35*a8a9d30bSMarcel Apfelbaum * data and the interrupt number. 36*a8a9d30bSMarcel Apfelbaum */ 37*a8a9d30bSMarcel Apfelbaum qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n); 38*a8a9d30bSMarcel Apfelbaum 390d09e41aSPaolo Bonzini /* Extends an Array of IRQs. Old IRQs have their handlers and opaque data 400d09e41aSPaolo Bonzini * preserved. New IRQs are assigned the argument handler and opaque data. 410d09e41aSPaolo Bonzini */ 420d09e41aSPaolo Bonzini qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler, 430d09e41aSPaolo Bonzini void *opaque, int n); 440d09e41aSPaolo Bonzini 450d09e41aSPaolo Bonzini void qemu_free_irqs(qemu_irq *s); 46*a8a9d30bSMarcel Apfelbaum void qemu_free_irq(qemu_irq irq); 470d09e41aSPaolo Bonzini 480d09e41aSPaolo Bonzini /* Returns a new IRQ with opposite polarity. */ 490d09e41aSPaolo Bonzini qemu_irq qemu_irq_invert(qemu_irq irq); 500d09e41aSPaolo Bonzini 510d09e41aSPaolo Bonzini /* Returns a new IRQ which feeds into both the passed IRQs */ 520d09e41aSPaolo Bonzini qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); 530d09e41aSPaolo Bonzini 540d09e41aSPaolo Bonzini /* Returns a new IRQ set which connects 1:1 to another IRQ set, which 550d09e41aSPaolo Bonzini * may be set later. 560d09e41aSPaolo Bonzini */ 570d09e41aSPaolo Bonzini qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); 580d09e41aSPaolo Bonzini 590d09e41aSPaolo Bonzini /* For internal use in qtest. Similar to qemu_irq_split, but operating 600d09e41aSPaolo Bonzini on an existing vector of qemu_irq. */ 610d09e41aSPaolo Bonzini void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); 620d09e41aSPaolo Bonzini void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n); 630d09e41aSPaolo Bonzini 640d09e41aSPaolo Bonzini #endif 65