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f173d57a4c
Allocate each IRQ individually on array allocations. This prepares for QOMification of IRQs, where pointers to individual IRQs may be taken and handed around for usage as QOM Links. The g_renew() scheme used here is too fragile and would break all existing links should an IRQ list be extended. We now have to pass the IRQ count to qemu_free_irqs(). We have so few call sites however, so this change is reasonably trivial. Cc: agarcia@igalia.com Cc: mst@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alberto Garcia <agarcia@igalia.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
#ifndef QEMU_IRQ_H
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#define QEMU_IRQ_H
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/* Generic IRQ/GPIO pin infrastructure. */
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typedef struct IRQState *qemu_irq;
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typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
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void qemu_set_irq(qemu_irq irq, int level);
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static inline void qemu_irq_raise(qemu_irq irq)
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{
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qemu_set_irq(irq, 1);
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}
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static inline void qemu_irq_lower(qemu_irq irq)
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{
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qemu_set_irq(irq, 0);
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}
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static inline void qemu_irq_pulse(qemu_irq irq)
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{
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qemu_set_irq(irq, 1);
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qemu_set_irq(irq, 0);
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}
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/* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
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* opaque data.
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*/
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qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
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/*
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* Allocates a single IRQ. The irq is assigned with a handler, an opaque
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* data and the interrupt number.
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*/
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qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n);
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/* Extends an Array of IRQs. Old IRQs have their handlers and opaque data
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* preserved. New IRQs are assigned the argument handler and opaque data.
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*/
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qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
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void *opaque, int n);
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void qemu_free_irqs(qemu_irq *s, int n);
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void qemu_free_irq(qemu_irq irq);
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/* Returns a new IRQ with opposite polarity. */
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qemu_irq qemu_irq_invert(qemu_irq irq);
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/* Returns a new IRQ which feeds into both the passed IRQs */
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qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
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/* Returns a new IRQ set which connects 1:1 to another IRQ set, which
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* may be set later.
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*/
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qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
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/* For internal use in qtest. Similar to qemu_irq_split, but operating
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on an existing vector of qemu_irq. */
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void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n);
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void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n);
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#endif
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