From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53247) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Za5UE-0000rC-0q for qemu-devel@nongnu.org; Thu, 10 Sep 2015 13:18:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Za5UA-0007Xi-4w for qemu-devel@nongnu.org; Thu, 10 Sep 2015 13:18:13 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:31832) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Za5UA-0007XV-1E for qemu-devel@nongnu.org; Thu, 10 Sep 2015 13:18:10 -0400 From: Stefano Stabellini Date: Thu, 10 Sep 2015 18:15:41 +0100 Message-ID: <1441905361-31967-9-git-send-email-stefano.stabellini@eu.citrix.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PULL 09/29] xen, gfx passthrough: register a isa bridge List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: peter.maydell@linaro.org Cc: Tiejun Chen , xen-devel@lists.xensource.com, qemu-devel@nongnu.org, Stefano Stabellini From: Tiejun Chen Currently we just register this isa bridge when we use IGD passthrough in Xen side. Signed-off-by: Tiejun Chen Acked-by: Stefano Stabellini Signed-off-by: Stefano Stabellini --- hw/xen/xen_pt.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 15b02cb..d67bccf 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -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 */ -- 1.7.10.4