Re: [Qemu-devel] [PATCH 7/7] igd: add q35 support

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Dec 08, 2015 at 03:07:28PM +0100, Gerd Hoffmann wrote:
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Acked-by: Michael S. Tsirkin <mst@redhat.com>

Generally are you merging this through your tree?


> ---
>  hw/pci-host/igd.c | 41 ++++++++++++++++++++++++++++++++++++++++-
>  hw/pci-host/q35.c |  6 +++++-
>  2 files changed, 45 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/pci-host/igd.c b/hw/pci-host/igd.c
> index ec48875..f6e3f7a 100644
> --- a/hw/pci-host/igd.c
> +++ b/hw/pci-host/igd.c
> @@ -1,5 +1,6 @@
>  #include "qemu-common.h"
>  #include "hw/pci/pci.h"
> +#include "hw/pci-host/q35.h"
>  #include "hw/i386/pc.h"
>  
>  /* IGD Passthrough Host Bridge. */
> @@ -76,7 +77,7 @@ static void igd_passthrough_i440fx_class_init(ObjectClass *klass, void *data)
>  
>      i440fx_realize = k->realize;
>      k->realize = igd_pt_i440fx_realize;
> -    dc->desc = "IGD Passthrough Host bridge";
> +    dc->desc = "IGD Passthrough Host bridge (i440fx)";
>  }
>  
>  static const TypeInfo igd_passthrough_i440fx_info = {
> @@ -85,9 +86,47 @@ static const TypeInfo igd_passthrough_i440fx_info = {
>      .class_init    = igd_passthrough_i440fx_class_init,
>  };
>  
> +static void (*q35_realize)(PCIDevice *pci_dev, Error **errp);
> +static void igd_pt_q35_realize(PCIDevice *pci_dev, Error **errp)
> +{
> +    Error *err = NULL;
> +
> +    q35_realize(pci_dev, &err);
> +    if (err != NULL) {
> +        error_propagate(errp, err);
> +        return;
> +    }
> +
> +    host_pci_config_copy(pci_dev, "0000:00:00.0",
> +                         igd_host_bridge_infos,
> +                         ARRAY_SIZE(igd_host_bridge_infos),
> +                         &err);
> +    if (err != NULL) {
> +        error_propagate(errp, err);
> +        return;
> +    }
> +}
> +
> +static void igd_passthrough_q35_class_init(ObjectClass *klass, void *data)
> +{
> +    DeviceClass *dc = DEVICE_CLASS(klass);
> +    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> +
> +    q35_realize = k->realize;
> +    k->realize = igd_pt_q35_realize;
> +    dc->desc = "IGD Passthrough Host bridge (q35)";
> +}
> +
> +static const TypeInfo igd_passthrough_q35_info = {
> +    .name          = "igd-passthrough-q35-mch",
> +    .parent        = TYPE_MCH_PCI_DEVICE,
> +    .class_init    = igd_passthrough_q35_class_init,
> +};
> +
>  static void igd_register_types(void)
>  {
>      type_register_static(&igd_passthrough_i440fx_info);
> +    type_register_static(&igd_passthrough_q35_info);
>  }
>  
>  type_init(igd_register_types)
> diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
> index 1fb4707..07dc595 100644
> --- a/hw/pci-host/q35.c
> +++ b/hw/pci-host/q35.c
> @@ -151,7 +151,11 @@ static void q35_host_initfn(Object *obj)
>      memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops, phb,
>                            "pci-conf-data", 4);
>  
> -    object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE);
> +    if (object_property_get_bool(qdev_get_machine(), "igd-passthru", NULL)) {
> +        object_initialize(&s->mch, sizeof(s->mch), "igd-passthrough-q35-mch");
> +    } else {
> +        object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE);
> +    }
>      object_property_add_child(OBJECT(s), "mch", OBJECT(&s->mch), NULL);
>      qdev_prop_set_uint32(DEVICE(&s->mch), "addr", PCI_DEVFN(0, 0));
>      qdev_prop_set_bit(DEVICE(&s->mch), "multifunction", false);
> -- 
> 1.8.3.1