igd-passthrough-isa-bridge is only requested in xen_pt but was
implemented in pc_piix.c. This caused xen_pt to dependend on i386/pc
which is hereby resolved.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
hw/i386/pc_piix.c | 118 --------------------------------------
hw/xen/xen_pt.c | 1 -
hw/xen/xen_pt.h | 1 +
hw/xen/xen_pt_graphics.c | 119 +++++++++++++++++++++++++++++++++++++++
include/hw/i386/pc.h | 1 -
5 files changed, 120 insertions(+), 120 deletions(-)
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index b72c03d0a6..6ad5c02f07 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -801,124 +801,6 @@ static void pc_i440fx_1_4_machine_options(MachineClass *m)
DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4_fn,
pc_i440fx_1_4_machine_options);
-typedef struct {
- uint16_t gpu_device_id;
- uint16_t pch_device_id;
- uint8_t pch_revision_id;
-} IGDDeviceIDInfo;
-
-/* In real world different GPU should have different PCH. But actually
- * the different PCH DIDs likely map to different PCH SKUs. We do the
- * same thing for the GPU. For PCH, the different SKUs are going to be
- * all the same silicon design and implementation, just different
- * features turn on and off with fuses. The SW interfaces should be
- * consistent across all SKUs in a given family (eg LPT). But just same
- * features may not be supported.
- *
- * Most of these different PCH features probably don't matter to the
- * Gfx driver, but obviously any difference in display port connections
- * will so it should be fine with any PCH in case of passthrough.
- *
- * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
- * scenarios, 0x9cc3 for BDW(Broadwell).
- */
-static const IGDDeviceIDInfo igd_combo_id_infos[] = {
- /* HSW Classic */
- {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
- {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
- {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
- {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
- {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
- /* HSW ULT */
- {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
- {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
- {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
- {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
- {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
- {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
- /* HSW CRW */
- {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
- {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
- /* HSW Server */
- {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
- /* HSW SRVR */
- {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
- /* BSW */
- {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
- {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
- {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
- {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
- {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
- {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
- {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
- {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
- {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
- {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
- {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
-};
-
-static void isa_bridge_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
- dc->desc = "ISA bridge faked to support IGD PT";
- set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
- k->vendor_id = PCI_VENDOR_ID_INTEL;
- k->class_id = PCI_CLASS_BRIDGE_ISA;
-};
-
-static const TypeInfo isa_bridge_info = {
- .name = "igd-passthrough-isa-bridge",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(PCIDevice),
- .class_init = isa_bridge_class_init,
- .interfaces = (InterfaceInfo[]) {
- { INTERFACE_CONVENTIONAL_PCI_DEVICE },
- { },
- },
-};
-
-static void pt_graphics_register_types(void)
-{
- type_register_static(&isa_bridge_info);
-}
-type_init(pt_graphics_register_types)
-
-void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
-{
- struct PCIDevice *bridge_dev;
- int i, num;
- uint16_t pch_dev_id = 0xffff;
- uint8_t pch_rev_id = 0;
-
- num = ARRAY_SIZE(igd_combo_id_infos);
- for (i = 0; i < num; i++) {
- if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
- pch_dev_id = igd_combo_id_infos[i].pch_device_id;
- pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
- }
- }
-
- if (pch_dev_id == 0xffff) {
- return;
- }
-
- /* Currently IGD drivers always need to access PCH by 1f.0. */
- bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
- "igd-passthrough-isa-bridge");
-
- /*
- * Note that vendor id is always PCI_VENDOR_ID_INTEL.
- */
- if (!bridge_dev) {
- fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
- return;
- }
- pci_config_set_device_id(bridge_dev->config, pch_dev_id);
- pci_config_set_revision(bridge_dev->config, pch_rev_id);
-}
-
#ifdef CONFIG_ISAPC
static void isapc_machine_options(MachineClass *m)
{
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index 027190fa44..829ea9985f 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -60,7 +60,6 @@
#include "hw/qdev-properties.h"
#include "hw/qdev-properties-system.h"
#include "hw/xen/xen.h"
-#include "hw/i386/pc.h"
#include "hw/xen/xen-legacy-backend.h"
#include "xen_pt.h"
#include "qemu/range.h"
diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
index 6b8e13cdee..806d832c94 100644
--- a/hw/xen/xen_pt.h
+++ b/hw/xen/xen_pt.h
@@ -43,6 +43,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(XenPCIPassthroughState, XEN_PT_DEVICE)
uint32_t igd_read_opregion(XenPCIPassthroughState *s);
void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val);
+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
/* function type for config reg */
typedef int (*xen_pt_conf_reg_init)
diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c
index a3bc7e3921..f1fbb98912 100644
--- a/hw/xen/xen_pt_graphics.c
+++ b/hw/xen/xen_pt_graphics.c
@@ -289,3 +289,122 @@ void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val)
(unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
(unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT));
}
+
+typedef struct {
+ uint16_t gpu_device_id;
+ uint16_t pch_device_id;
+ uint8_t pch_revision_id;
+} IGDDeviceIDInfo;
+
+/*
+ * In real world different GPU should have different PCH. But actually
+ * the different PCH DIDs likely map to different PCH SKUs. We do the
+ * same thing for the GPU. For PCH, the different SKUs are going to be
+ * all the same silicon design and implementation, just different
+ * features turn on and off with fuses. The SW interfaces should be
+ * consistent across all SKUs in a given family (eg LPT). But just same
+ * features may not be supported.
+ *
+ * Most of these different PCH features probably don't matter to the
+ * Gfx driver, but obviously any difference in display port connections
+ * will so it should be fine with any PCH in case of passthrough.
+ *
+ * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
+ * scenarios, 0x9cc3 for BDW(Broadwell).
+ */
+static const IGDDeviceIDInfo igd_combo_id_infos[] = {
+ /* HSW Classic */
+ {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
+ {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
+ {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
+ {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
+ {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
+ /* HSW ULT */
+ {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
+ {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
+ {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
+ {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
+ {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
+ {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
+ /* HSW CRW */
+ {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
+ {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
+ /* HSW Server */
+ {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
+ /* HSW SRVR */
+ {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
+ /* BSW */
+ {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
+ {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
+ {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
+ {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
+ {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
+ {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
+ {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
+ {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
+ {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
+ {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
+ {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
+};
+
+static void isa_bridge_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ dc->desc = "ISA bridge faked to support IGD PT";
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ k->vendor_id = PCI_VENDOR_ID_INTEL;
+ k->class_id = PCI_CLASS_BRIDGE_ISA;
+};
+
+static const TypeInfo isa_bridge_info = {
+ .name = "igd-passthrough-isa-bridge",
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(PCIDevice),
+ .class_init = isa_bridge_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { },
+ },
+};
+
+static void pt_graphics_register_types(void)
+{
+ type_register_static(&isa_bridge_info);
+}
+type_init(pt_graphics_register_types)
+
+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
+{
+ struct PCIDevice *bridge_dev;
+ int i, num;
+ uint16_t pch_dev_id = 0xffff;
+ uint8_t pch_rev_id = 0;
+
+ num = ARRAY_SIZE(igd_combo_id_infos);
+ for (i = 0; i < num; i++) {
+ if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
+ pch_dev_id = igd_combo_id_infos[i].pch_device_id;
+ pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
+ }
+ }
+
+ if (pch_dev_id == 0xffff) {
+ return;
+ }
+
+ /* Currently IGD drivers always need to access PCH by 1f.0. */
+ bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
+ "igd-passthrough-isa-bridge");
+
+ /*
+ * Note that vendor id is always PCI_VENDOR_ID_INTEL.
+ */
+ if (!bridge_dev) {
+ fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
+ return;
+ }
+ pci_config_set_device_id(bridge_dev->config, pch_dev_id);
+ pci_config_set_revision(bridge_dev->config, pch_rev_id);
+}
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 1a27de9c8b..926a507a0c 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -312,5 +312,4 @@ extern const size_t pc_compat_1_4_len;
} \
type_init(pc_machine_init_##suffix)
-extern void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
#endif
--
2.35.1On Sat, Mar 26, 2022 at 05:58:23PM +0100, Bernhard Beschow wrote: > igd-passthrough-isa-bridge is only requested in xen_pt but was > implemented in pc_piix.c. This caused xen_pt to dependend on i386/pc > which is hereby resolved. > > Signed-off-by: Bernhard Beschow <shentey@gmail.com> Acked-by: Anthony PERARD <anthony.perard@citrix.com> Thanks, -- Anthony PERARD
Am 26. März 2022 16:58:23 UTC schrieb Bernhard Beschow <shentey@gmail.com>:
>igd-passthrough-isa-bridge is only requested in xen_pt but was
>implemented in pc_piix.c. This caused xen_pt to dependend on i386/pc
>which is hereby resolved.
>
>Signed-off-by: Bernhard Beschow <shentey@gmail.com>
>---
> hw/i386/pc_piix.c | 118 --------------------------------------
> hw/xen/xen_pt.c | 1 -
> hw/xen/xen_pt.h | 1 +
> hw/xen/xen_pt_graphics.c | 119 +++++++++++++++++++++++++++++++++++++++
> include/hw/i386/pc.h | 1 -
> 5 files changed, 120 insertions(+), 120 deletions(-)
>
>diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
>index b72c03d0a6..6ad5c02f07 100644
>--- a/hw/i386/pc_piix.c
>+++ b/hw/i386/pc_piix.c
>@@ -801,124 +801,6 @@ static void pc_i440fx_1_4_machine_options(MachineClass *m)
> DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4_fn,
> pc_i440fx_1_4_machine_options);
>
>-typedef struct {
>- uint16_t gpu_device_id;
>- uint16_t pch_device_id;
>- uint8_t pch_revision_id;
>-} IGDDeviceIDInfo;
>-
>-/* In real world different GPU should have different PCH. But actually
>- * the different PCH DIDs likely map to different PCH SKUs. We do the
>- * same thing for the GPU. For PCH, the different SKUs are going to be
>- * all the same silicon design and implementation, just different
>- * features turn on and off with fuses. The SW interfaces should be
>- * consistent across all SKUs in a given family (eg LPT). But just same
>- * features may not be supported.
>- *
>- * Most of these different PCH features probably don't matter to the
>- * Gfx driver, but obviously any difference in display port connections
>- * will so it should be fine with any PCH in case of passthrough.
>- *
>- * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
>- * scenarios, 0x9cc3 for BDW(Broadwell).
>- */
>-static const IGDDeviceIDInfo igd_combo_id_infos[] = {
>- /* HSW Classic */
>- {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
>- {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
>- {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
>- {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
>- {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
>- /* HSW ULT */
>- {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
>- {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
>- {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
>- {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
>- {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
>- {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
>- /* HSW CRW */
>- {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
>- {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
>- /* HSW Server */
>- {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
>- /* HSW SRVR */
>- {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
>- /* BSW */
>- {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
>- {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
>- {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
>- {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
>- {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
>- {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
>- {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
>- {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
>- {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
>- {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
>- {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
>-};
>-
>-static void isa_bridge_class_init(ObjectClass *klass, void *data)
>-{
>- DeviceClass *dc = DEVICE_CLASS(klass);
>- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>-
>- dc->desc = "ISA bridge faked to support IGD PT";
>- set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
>- k->vendor_id = PCI_VENDOR_ID_INTEL;
>- k->class_id = PCI_CLASS_BRIDGE_ISA;
>-};
>-
>-static const TypeInfo isa_bridge_info = {
>- .name = "igd-passthrough-isa-bridge",
>- .parent = TYPE_PCI_DEVICE,
>- .instance_size = sizeof(PCIDevice),
>- .class_init = isa_bridge_class_init,
>- .interfaces = (InterfaceInfo[]) {
>- { INTERFACE_CONVENTIONAL_PCI_DEVICE },
>- { },
>- },
>-};
>-
>-static void pt_graphics_register_types(void)
>-{
>- type_register_static(&isa_bridge_info);
>-}
>-type_init(pt_graphics_register_types)
>-
>-void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
>-{
>- struct PCIDevice *bridge_dev;
>- int i, num;
>- uint16_t pch_dev_id = 0xffff;
>- uint8_t pch_rev_id = 0;
>-
>- num = ARRAY_SIZE(igd_combo_id_infos);
>- for (i = 0; i < num; i++) {
>- if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
>- pch_dev_id = igd_combo_id_infos[i].pch_device_id;
>- pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
>- }
>- }
>-
>- if (pch_dev_id == 0xffff) {
>- return;
>- }
>-
>- /* Currently IGD drivers always need to access PCH by 1f.0. */
>- bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
>- "igd-passthrough-isa-bridge");
>-
>- /*
>- * Note that vendor id is always PCI_VENDOR_ID_INTEL.
>- */
>- if (!bridge_dev) {
>- fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
>- return;
>- }
>- pci_config_set_device_id(bridge_dev->config, pch_dev_id);
>- pci_config_set_revision(bridge_dev->config, pch_rev_id);
>-}
>-
> #ifdef CONFIG_ISAPC
> static void isapc_machine_options(MachineClass *m)
> {
>diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
>index 027190fa44..829ea9985f 100644
>--- a/hw/xen/xen_pt.c
>+++ b/hw/xen/xen_pt.c
>@@ -60,7 +60,6 @@
> #include "hw/qdev-properties.h"
> #include "hw/qdev-properties-system.h"
> #include "hw/xen/xen.h"
>-#include "hw/i386/pc.h"
> #include "hw/xen/xen-legacy-backend.h"
> #include "xen_pt.h"
> #include "qemu/range.h"
>diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
>index 6b8e13cdee..806d832c94 100644
>--- a/hw/xen/xen_pt.h
>+++ b/hw/xen/xen_pt.h
>@@ -43,6 +43,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(XenPCIPassthroughState, XEN_PT_DEVICE)
>
> uint32_t igd_read_opregion(XenPCIPassthroughState *s);
> void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val);
>+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
>
> /* function type for config reg */
> typedef int (*xen_pt_conf_reg_init)
>diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c
>index a3bc7e3921..f1fbb98912 100644
>--- a/hw/xen/xen_pt_graphics.c
>+++ b/hw/xen/xen_pt_graphics.c
>@@ -289,3 +289,122 @@ void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val)
> (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
> (unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT));
> }
>+
>+typedef struct {
>+ uint16_t gpu_device_id;
>+ uint16_t pch_device_id;
>+ uint8_t pch_revision_id;
>+} IGDDeviceIDInfo;
>+
>+/*
>+ * In real world different GPU should have different PCH. But actually
>+ * the different PCH DIDs likely map to different PCH SKUs. We do the
>+ * same thing for the GPU. For PCH, the different SKUs are going to be
>+ * all the same silicon design and implementation, just different
>+ * features turn on and off with fuses. The SW interfaces should be
>+ * consistent across all SKUs in a given family (eg LPT). But just same
>+ * features may not be supported.
>+ *
>+ * Most of these different PCH features probably don't matter to the
>+ * Gfx driver, but obviously any difference in display port connections
>+ * will so it should be fine with any PCH in case of passthrough.
>+ *
>+ * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
>+ * scenarios, 0x9cc3 for BDW(Broadwell).
>+ */
>+static const IGDDeviceIDInfo igd_combo_id_infos[] = {
>+ /* HSW Classic */
>+ {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
>+ {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
>+ {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
>+ {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
>+ {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
>+ /* HSW ULT */
>+ {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
>+ {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
>+ {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
>+ {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
>+ {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
>+ {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
>+ /* HSW CRW */
>+ {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
>+ {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
>+ /* HSW Server */
>+ {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
>+ /* HSW SRVR */
>+ {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
>+ /* BSW */
>+ {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
>+ {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
>+ {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
>+ {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
>+ {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
>+ {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
>+ {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
>+ {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
>+ {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
>+ {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
>+ {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
>+};
>+
>+static void isa_bridge_class_init(ObjectClass *klass, void *data)
>+{
>+ DeviceClass *dc = DEVICE_CLASS(klass);
>+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>+
>+ dc->desc = "ISA bridge faked to support IGD PT";
>+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
>+ k->vendor_id = PCI_VENDOR_ID_INTEL;
>+ k->class_id = PCI_CLASS_BRIDGE_ISA;
>+};
>+
>+static const TypeInfo isa_bridge_info = {
>+ .name = "igd-passthrough-isa-bridge",
>+ .parent = TYPE_PCI_DEVICE,
>+ .instance_size = sizeof(PCIDevice),
>+ .class_init = isa_bridge_class_init,
>+ .interfaces = (InterfaceInfo[]) {
>+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
>+ { },
>+ },
>+};
>+
>+static void pt_graphics_register_types(void)
>+{
>+ type_register_static(&isa_bridge_info);
>+}
>+type_init(pt_graphics_register_types)
>+
>+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
>+{
>+ struct PCIDevice *bridge_dev;
>+ int i, num;
>+ uint16_t pch_dev_id = 0xffff;
>+ uint8_t pch_rev_id = 0;
>+
>+ num = ARRAY_SIZE(igd_combo_id_infos);
>+ for (i = 0; i < num; i++) {
>+ if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
>+ pch_dev_id = igd_combo_id_infos[i].pch_device_id;
>+ pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
>+ }
>+ }
>+
>+ if (pch_dev_id == 0xffff) {
>+ return;
>+ }
>+
>+ /* Currently IGD drivers always need to access PCH by 1f.0. */
>+ bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
>+ "igd-passthrough-isa-bridge");
>+
>+ /*
>+ * Note that vendor id is always PCI_VENDOR_ID_INTEL.
>+ */
>+ if (!bridge_dev) {
>+ fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
>+ return;
>+ }
>+ pci_config_set_device_id(bridge_dev->config, pch_dev_id);
>+ pci_config_set_revision(bridge_dev->config, pch_rev_id);
>+}
>diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
>index 1a27de9c8b..926a507a0c 100644
>--- a/include/hw/i386/pc.h
>+++ b/include/hw/i386/pc.h
>@@ -312,5 +312,4 @@ extern const size_t pc_compat_1_4_len;
> } \
> type_init(pc_machine_init_##suffix)
>
>-extern void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
> #endif
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