Commit 715ca691 authored by Eric Auger's avatar Eric Auger Committed by Alex Williamson
Browse files

sysbus: add irq_routing_notifier 



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: default avatarEric Auger <eric.auger@linaro.org>
Reviewed-by: default avatarPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Tested-by: default avatarVikram Sethi <vikrams@codeaurora.org>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 6a1a9cfa

hw/core/sysbus.c

+6 −0
Original line number Diff line number Diff line
@@ -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 */

include/hw/sysbus.h

+1 −0
Original line number Diff line number Diff line
@@ -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 {