[Qemu-devel] [v2][PATCH 4/5] xen:hw:pci-host:piix: introduce xen_igd_passthrough_i440fx_init

[Tiejun Chen <tiejun.chen@intel.com>]

This is almost same as an original i440fx_init but just
work with that xen igd host bridge to passthrough.

Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
---
 hw/pci-host/piix.c   | 32 ++++++++++++++++++++++++++++++++
 include/hw/i386/pc.h | 11 +++++++++++
 2 files changed, 43 insertions(+)

v2:

* Based on patch #2 to regenerate

diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index 8414864..5977841 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -465,6 +465,38 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
     return bus_bridge;
 }
 
+PCIBus *xen_igd_passthrough_i440fx_init(PCII440FXState **pi440fx_state,
+                    int *piix3_devfn,
+                    ISABus **isa_bus,
+                    qemu_irq *pic,
+                    MemoryRegion *address_space_mem,
+                    MemoryRegion *address_space_io,
+                    ram_addr_t ram_size,
+                    ram_addr_t below_4g_mem_size,
+                    ram_addr_t above_4g_mem_size,
+                    MemoryRegion *pci_address_space,
+                    MemoryRegion *ram_memory)
+{
+    PCIDevice *d;
+    DeviceState *dev_bridge;
+    PCIBus *bus_bridge;
+
+    i440fx_pci_host_create(&dev_bridge, &bus_bridge, address_space_io,
+                           pci_address_space);
+
+    d = i440fx_pci0_create(&bus_bridge,
+                           TYPE_XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE,
+                           pi440fx_state);
+
+    bus_bridge = i440fx_pci_setup(&dev_bridge, &bus_bridge, d, pi440fx_state,
+                                  piix3_devfn, isa_bus, pic, address_space_mem,
+                                  address_space_io, ram_size, below_4g_mem_size,
+                                  above_4g_mem_size, pci_address_space,
+                                  ram_memory);
+
+    return bus_bridge;
+}
+
 PCIBus *find_i440fx(void)
 {
     PCIHostState *s = OBJECT_CHECK(PCIHostState,
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index f4b9b2b..65b75a2 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -240,6 +240,17 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn,
                     MemoryRegion *pci_memory,
                     MemoryRegion *ram_memory);
 
+PCIBus *xen_igd_passthrough_i440fx_init(PCII440FXState **pi440fx_state,
+                                        int *piix_devfn,
+                                        ISABus **isa_bus, qemu_irq *pic,
+                                        MemoryRegion *address_space_mem,
+                                        MemoryRegion *address_space_io,
+                                        ram_addr_t ram_size,
+                                        ram_addr_t below_4g_mem_size,
+                                        ram_addr_t above_4g_mem_size,
+                                        MemoryRegion *pci_memory,
+                                        MemoryRegion *ram_memory);
+
 PCIBus *find_i440fx(void);
 /* piix4.c */
 extern PCIDevice *piix4_dev;
-- 
1.9.1