[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [v3][PATCH 3/4] xen:hw:pci-host:piix: create host bridge to passthrough
Implement a pci host bridge specific to passthrough. Actually this just inherits the standard one. This is based on http://patchwork.ozlabs.org/patch/363810/. Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxx> --- hw/pci-host/piix.c | 41 +++++++++++++++++++++++++++++++++++++++++ include/hw/i386/pc.h | 2 ++ 2 files changed, 43 insertions(+) v3: * Rebase v2: * Just add prefix with XEN_IGD_PASSTHROUGH/xen_igd_passthrough diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index 0cd82b8..26ba1e5 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -93,6 +93,9 @@ typedef struct PIIX3State { #define I440FX_PCI_DEVICE(obj) \ OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE) +#define XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE(obj) \ + OBJECT_CHECK(PCII440FXState, (obj), TYPE_XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE) + struct PCII440FXState { /*< private >*/ PCIDevice parent_obj; @@ -303,6 +306,16 @@ static int i440fx_initfn(PCIDevice *dev) return 0; } +static int xen_igd_passthrough_i440fx_initfn(PCIDevice *dev) +{ + PCII440FXState *d = XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE(dev); + + dev->config[I440FX_SMRAM] = 0x02; + + cpu_smm_register(&i440fx_set_smm, d); + return 0; +} + PCIBus *i440fx_init(const char *host_type, const char *pci_type, PCII440FXState **pi440fx_state, int *piix3_devfn, @@ -703,6 +716,33 @@ static const TypeInfo i440fx_info = { .class_init = i440fx_class_init, }; +static void xen_igd_passthrough_i440fx_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = xen_igd_passthrough_i440fx_initfn; + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = PCI_DEVICE_ID_INTEL_82441; + k->revision = 0x02; + k->class_id = PCI_CLASS_BRIDGE_HOST; + dc->desc = "IGD PT XEN Host bridge"; + dc->vmsd = &vmstate_i440fx; + /* + * PCI-facing part of the host bridge, not usable without the + * host-facing part, which can't be device_add'ed, yet. + */ + dc->cannot_instantiate_with_device_add_yet = true; + dc->hotpluggable = false; +} + +static const TypeInfo xen_igd_passthrough_i440fx_info = { + .name = TYPE_XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCII440FXState), + .class_init = xen_igd_passthrough_i440fx_class_init, +}; + static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge, PCIBus *rootbus) { @@ -744,6 +784,7 @@ static const TypeInfo i440fx_pcihost_info = { static void i440fx_register_types(void) { type_register_static(&i440fx_info); + type_register_static(&xen_igd_passthrough_i440fx_info); type_register_static(&piix3_info); type_register_static(&piix3_xen_info); type_register_static(&i440fx_pcihost_info); diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 9778a71..98ae1a3 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -233,6 +233,8 @@ typedef struct PCII440FXState PCII440FXState; #define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost" #define TYPE_I440FX_PCI_DEVICE "i440FX" +#define TYPE_XEN_IGD_PASSTHROUGH_I440FX_PCI_DEVICE "xen-igd-passthrough-i440FX" + PCIBus *i440fx_init(const char *host_type, const char *pci_type, PCII440FXState **pi440fx_state, int *piix_devfn, ISABus **isa_bus, qemu_irq *pic, -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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