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From aeb5a8995d3eb533fb870f0493c7844679062610 Mon Sep 17 00:00:00 2001
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From: Auger Eric <eric.auger@redhat.com>
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Date: Mon, 6 Nov 2017 17:08:44 +0100
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Subject: [PATCH 8/9] hw/pci-host/gpex: Implement PCI INTx routing
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RH-Author: Auger Eric <eric.auger@redhat.com>
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Message-id: <1509988125-30275-4-git-send-email-eric.auger@redhat.com>
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Patchwork-id: 77510
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O-Subject: [RHV7.5 qemu-kvm-ma PATCH 3/4] hw/pci-host/gpex: Implement PCI INTx routing
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Bugzilla: 1460957
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RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
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Now we are able to retrieve the gsi from the INTx pin, let's
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enable intx_to_irq routing. From that point on, irqfd becomes
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usable along with INTx when assigning a PCIe device.
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Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
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Signed-off-by: Tushar Jagad <tushar.jagad@linaro.org>
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Reviewed-by: Andrew Jones <drjones@redhat.com>
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Tested-by: Feng Kan <fkan@apm.com>
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Message-id: 1505296004-6798-4-git-send-email-eric.auger@redhat.com
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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(cherry picked from commit d464814ae729f3200234ff74d5f050ddad4f1f20)
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/pci-host/gpex.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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diff --git a/hw/pci-host/gpex.c b/hw/pci-host/gpex.c
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index d6cf621..4090793 100644
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--- a/hw/pci-host/gpex.c
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+++ b/hw/pci-host/gpex.c
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@@ -53,6 +53,17 @@ int gpex_set_irq_num(GPEXHost *s, int index, int gsi)
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return 0;
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}
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+static PCIINTxRoute gpex_route_intx_pin_to_irq(void *opaque, int pin)
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+{
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+ PCIINTxRoute route;
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+ GPEXHost *s = opaque;
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+
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+ route.mode = PCI_INTX_ENABLED;
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+ route.irq = s->irq_num[pin];
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+
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+ return route;
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+}
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+
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static void gpex_host_realize(DeviceState *dev, Error **errp)
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{
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PCIHostState *pci = PCI_HOST_BRIDGE(dev);
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@@ -77,6 +88,7 @@ static void gpex_host_realize(DeviceState *dev, Error **errp)
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&s->io_ioport, 0, 4, TYPE_PCIE_BUS);
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qdev_set_parent_bus(DEVICE(&s->gpex_root), BUS(pci->bus));
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+ pci_bus_set_route_irq_fn(pci->bus, gpex_route_intx_pin_to_irq);
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qdev_init_nofail(DEVICE(&s->gpex_root));
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}
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--
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1.8.3.1
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