[PATCH v15 09/10] sysbus: add irq_routing_notifier

Eric Auger
2015-04-30T12:41:06Z

Add a new connect_irq_notifier notifier in the SysBusDeviceClass. This
notifier, if populated, is called after sysbus_connect_irq.

This mechanism is used to setup VFIO signaling once VFIO platform
devices get attached to their platform bus, on a machine init done
notifier.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>

---
v14 -> v15:
add Peter R-b

v2 -> v3 (integrated into this series v14):
- rename irq_routing_notifier into connect_irq_notifier

v1 -> v2:
- duly put the notifier in the class and not in the device
---
hw/core/sysbus.c | 6 ++++++
include/hw/sysbus.h | 1 +
2 files changed, 7 insertions(+)

diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c
index b53c351..2d22aec 100644
--- a/hw/core/sysbus.c
+++ b/hw/core/sysbus.c
@@ -109,7 +109,13 @@ qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n)

void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
{
+ SysBusDeviceClass *sbd = SYS_BUS_DEVICE_GET_CLASS(dev);
+
qdev_connect_gpio_out_named(DEVICE(dev), SYSBUS_DEVICE_GPIO_IRQ, n, irq);
+
+ if (sbd->connect_irq_notifier) {
+ sbd->connect_irq_notifier(dev, irq);
+ }
}

/* Check whether an MMIO region exists */
diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h
index d1f3f00..e80b26d 100644
--- a/include/hw/sysbus.h
+++ b/include/hw/sysbus.h
@@ -41,6 +41,7 @@ typedef struct SysBusDeviceClass {
/*< public >*/

int (*init)(SysBusDevice *dev);
+ void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
} SysBusDeviceClass;

struct SysBusDevice {
--
1.8.3.2