Currently we just register this isa bridge when we use IGD
passthrough in Xen side.
Signed-off-by: Tiejun Chen <tiejun.c...@intel.com>
---
hw/xen/xen_pt.c | 18 ++++++++++++++++++
include/hw/xen/xen.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index 3bf2233..fff169d 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -676,6 +676,21 @@ static const MemoryListener xen_pt_io_listener = {
.priority = 10,
};
+static void
+xen_igd_passthrough_isa_bridge_create(XenPCIPassthroughState *s,
+ XenHostPCIDevice *dev)
+{
+ uint16_t gpu_dev_id;
+ PCIDevice *d = &s->dev;
+
+ if (!is_igd_vga_passthrough(dev)) {
+ return;
+ }
+
+ gpu_dev_id = dev->device_id;
+ igd_passthrough_isa_bridge_create(d->bus, gpu_dev_id);
+}
+
/* init */
static int xen_pt_initfn(PCIDevice *d)
@@ -725,6 +740,9 @@ static int xen_pt_initfn(PCIDevice *d)
xen_host_pci_device_put(&s->real_device);
return -1;
}
+
+ /* Register ISA bridge for passthrough GFX. */
+ xen_igd_passthrough_isa_bridge_create(s, &s->real_device);
}
/* Handle real device's MMIO/PIO BARs */
diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h
index 4356af4..703148e 100644
--- a/include/hw/xen/xen.h
+++ b/include/hw/xen/xen.h
@@ -51,4 +51,5 @@ void xen_register_framebuffer(struct MemoryRegion *mr);
# define HVM_MAX_VCPUS 32
#endif
+extern void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t
gpu_dev_id);
#endif /* QEMU_HW_XEN_H */
--
1.9.1
