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xen, gfx passthrough: register a isa bridge

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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>
This commit is contained in:
Tiejun Chen 2015-07-15 13:37:48 +08:00 committed by Stefano Stabellini
parent bd8107d730
commit f37d630a69
1 changed files with 22 additions and 0 deletions
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22
hw/xen/xen_pt.c
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@ -56,6 +56,7 @@
#include "hw/pci/pci.h"
#include "hw/xen/xen.h"
#include "hw/i386/pc.h"
#include "hw/xen/xen_backend.h"
#include "xen_pt.h"
#include "qemu/range.h"
@ -684,6 +685,17 @@ 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;
gpu_dev_id = dev->device_id;
igd_passthrough_isa_bridge_create(d->bus, gpu_dev_id);
}
/* init */
static int xen_pt_initfn(PCIDevice *d)
@ -728,11 +740,21 @@ static int xen_pt_initfn(PCIDevice *d)
/* Setup VGA bios for passthrough GFX */
if ((s->real_device.domain == 0) && (s->real_device.bus == 0) &&
(s->real_device.dev == 2) && (s->real_device.func == 0)) {
if (!is_igd_vga_passthrough(&s->real_device)) {
XEN_PT_ERR(d, "Need to enable igd-passthru if you're trying"
" to passthrough IGD GFX.\n");
xen_host_pci_device_put(&s->real_device);
return -1;
}
if (xen_pt_setup_vga(s, &s->real_device) < 0) {
XEN_PT_ERR(d, "Setup VGA BIOS of passthrough GFX failed!\n");
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 */