[Xen-devel] [PATCH v2 08/10] igd: add q35 support

[Gerd Hoffmann <kraxel@xxxxxxxxxx>]

Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
 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


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