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Re: [Qemu-arm] [Qemu-devel] [PATCH RESEND v3 3/3] hw/pci-host/gpex: Impl
From: |
Andrew Jones |
Subject: |
Re: [Qemu-arm] [Qemu-devel] [PATCH RESEND v3 3/3] hw/pci-host/gpex: Implement PCI INTx routing |
Date: |
Mon, 11 Sep 2017 14:52:45 +0200 |
User-agent: |
Mutt/1.6.0.1 (2016-04-01) |
On Sun, Jul 09, 2017 at 11:02:19PM +0200, Eric Auger wrote:
> From: Pranavkumar Sawargaonkar <address@hidden>
>
> 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 <address@hidden>
> Signed-off-by: Tushar Jagad <address@hidden>
> Signed-off-by: Eric Auger <address@hidden>
> ---
> hw/pci-host/gpex.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/hw/pci-host/gpex.c b/hw/pci-host/gpex.c
> index 0d42ac2..94cc3c1 100644
> --- a/hw/pci-host/gpex.c
> +++ b/hw/pci-host/gpex.c
> @@ -53,6 +53,17 @@ int gpex_set_irq_num(GPEXHost *s, int index, uint32_t 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 = (int)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));
> }
>
> --
> 2.5.5
>
>
Wouldn't need the cast if irq_num was an array of ints, but otherwise
Reviewed-by: Andrew Jones <address@hidden>
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