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sysbus: add irq_routing_notifier

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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>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Auger 2015-07-06 12:15:14 -06:00 committed by Alex Williamson
parent 6a1a9cfa1c
commit 715ca691da
2 changed files with 7 additions and 0 deletions
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6
hw/core/sysbus.c
View File

@ -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 */

1
include/hw/sysbus.h
View File

@ -58,6 +58,7 @@ typedef struct SysBusDeviceClass {
* omitted then. (This is not considered a fatal error.)
*/
char *(*explicit_ofw_unit_address)(const SysBusDevice *dev);
void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
} SysBusDeviceClass;
struct SysBusDevice {