xen, gfx passthrough: register a isa bridge
Currently we just register this isa bridge when we use IGD passthrough in Xen side. Signed-off-by: Tiejun Chen <tiejun.chen@intel.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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@ -56,6 +56,7 @@
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#include "hw/pci/pci.h"
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#include "hw/xen/xen.h"
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#include "hw/i386/pc.h"
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#include "hw/xen/xen_backend.h"
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#include "xen_pt.h"
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#include "qemu/range.h"
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@ -684,6 +685,17 @@ static const MemoryListener xen_pt_io_listener = {
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.priority = 10,
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};
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static void
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xen_igd_passthrough_isa_bridge_create(XenPCIPassthroughState *s,
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XenHostPCIDevice *dev)
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{
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uint16_t gpu_dev_id;
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PCIDevice *d = &s->dev;
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gpu_dev_id = dev->device_id;
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igd_passthrough_isa_bridge_create(d->bus, gpu_dev_id);
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}
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/* init */
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static int xen_pt_initfn(PCIDevice *d)
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@ -728,11 +740,21 @@ static int xen_pt_initfn(PCIDevice *d)
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/* Setup VGA bios for passthrough GFX */
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if ((s->real_device.domain == 0) && (s->real_device.bus == 0) &&
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(s->real_device.dev == 2) && (s->real_device.func == 0)) {
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if (!is_igd_vga_passthrough(&s->real_device)) {
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XEN_PT_ERR(d, "Need to enable igd-passthru if you're trying"
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" to passthrough IGD GFX.\n");
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xen_host_pci_device_put(&s->real_device);
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return -1;
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}
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if (xen_pt_setup_vga(s, &s->real_device) < 0) {
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XEN_PT_ERR(d, "Setup VGA BIOS of passthrough GFX failed!\n");
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xen_host_pci_device_put(&s->real_device);
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return -1;
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}
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/* Register ISA bridge for passthrough GFX. */
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xen_igd_passthrough_isa_bridge_create(s, &s->real_device);
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}
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/* Handle real device's MMIO/PIO BARs */
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