hw/irq: Introduce qemu_init_irqs() helper

While qemu_init_irq() initialize a single IRQ,
qemu_init_irqs() initialize an array of them.

Suggested-by: Bernhard Beschow <shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250121155526.29982-2-philmd@linaro.org>

2 files changed, 19 insertions, 0 deletions

diff --git a/hw/core/irq.c b/hw/core/irq.c
index 7d5b0038c1..6dd8d47bd6 100644
--- a/hw/core/irq.c
+++ b/hw/core/irq.c
@@ -49,6 +49,14 @@ void qemu_init_irq(IRQState *irq, qemu_irq_handler handler, void *opaque,
     init_irq_fields(irq, handler, opaque, n);
 }
 
+void qemu_init_irqs(IRQState irq[], size_t count,
+                    qemu_irq_handler handler, void *opaque)
+{
+    for (size_t i = 0; i < count; i++) {
+        qemu_init_irq(&irq[i], handler, opaque, i);
+    }
+}
+
 qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
                            void *opaque, int n)
 {
diff --git a/include/hw/irq.h b/include/hw/irq.h
index c861c1debd..b3012237ac 100644
--- a/include/hw/irq.h
+++ b/include/hw/irq.h
@@ -41,6 +41,17 @@ static inline void qemu_irq_pulse(qemu_irq irq)
 void qemu_init_irq(IRQState *irq, qemu_irq_handler handler, void *opaque,
                    int n);
 
+/**
+ * qemu_init_irqs: Initialize an array of IRQs.
+ *
+ * @irq: Array of IRQs to initialize
+ * @count: number of IRQs to initialize
+ * @handler: handler to assign to each IRQ
+ * @opaque: opaque data to pass to @handler
+ */
+void qemu_init_irqs(IRQState irq[], size_t count,
+                    qemu_irq_handler handler, void *opaque);
+
 /* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
  * opaque data.
  */