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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: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Tushar Jagad <tushar.jagad@linaro.org>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Feng Kan <fkan@apm.com>
Message-id: 1505296004-6798-4-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Pranavkumar Sawargaonkar 2017-09-14 18:43:19 +01:00 committed by Peter Maydell
parent c9bb8e1608
commit d464814ae7
1 changed files with 12 additions and 0 deletions
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12
hw/pci-host/gpex.c
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@ -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));
}