Commit d464814a authored by Pranavkumar Sawargaonkar's avatar Pranavkumar Sawargaonkar Committed by Peter Maydell
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hw/pci-host/gpex: Implement PCI INTx routing 



Now we are able to retrieve the gsi from the INTx pin, let's
enable intx_to_irq routing. From that point on, irqfd becomes
usable along with INTx when assigning a PCIe device.

Signed-off-by: default avatarPranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: default avatarTushar Jagad <tushar.jagad@linaro.org>
Signed-off-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarAndrew Jones <drjones@redhat.com>
Tested-by: default avatarFeng Kan <fkan@apm.com>
Message-id: 1505296004-6798-4-git-send-email-eric.auger@redhat.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent c9bb8e16

hw/pci-host/gpex.c

+12 −0
Original line number Diff line number Diff line
@@ -53,6 +53,17 @@ int gpex_set_irq_num(GPEXHost *s, int index, int gsi) 
    return 0;

}



static PCIINTxRoute gpex_route_intx_pin_to_irq(void *opaque, int pin)

{

    PCIINTxRoute route;

    GPEXHost *s = opaque;



    route.mode = PCI_INTX_ENABLED;

    route.irq = s->irq_num[pin];



    return route;

}



static void gpex_host_realize(DeviceState *dev, Error **errp)

{

    PCIHostState *pci = PCI_HOST_BRIDGE(dev);
@@ -77,6 +88,7 @@ static void gpex_host_realize(DeviceState *dev, Error **errp) 
                                &s->io_ioport, 0, 4, TYPE_PCIE_BUS);



    qdev_set_parent_bus(DEVICE(&s->gpex_root), BUS(pci->bus));

    pci_bus_set_route_irq_fn(pci->bus, gpex_route_intx_pin_to_irq);

    qdev_init_nofail(DEVICE(&s->gpex_root));

}