From patchwork Wed Mar 18 09:06:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tiejun Chen X-Patchwork-Id: 451286 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3CF5214009B for ; Wed, 18 Mar 2015 20:10:49 +1100 (AEDT) Received: from localhost ([::1]:59863 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YY9zz-0000J2-B1 for incoming@patchwork.ozlabs.org; Wed, 18 Mar 2015 05:10:47 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46360) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YY9xN-00048v-D6 for qemu-devel@nongnu.org; Wed, 18 Mar 2015 05:08:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YY9xI-0001y5-Ag for qemu-devel@nongnu.org; Wed, 18 Mar 2015 05:08:05 -0400 Received: from mga03.intel.com ([134.134.136.65]:50843) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YY9xI-0001uB-5s for qemu-devel@nongnu.org; Wed, 18 Mar 2015 05:08:00 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP; 18 Mar 2015 02:04:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,421,1422950400"; d="scan'208";a="468829620" Received: from tchen0-linux.bj.intel.com ([10.238.154.91]) by FMSMGA003.fm.intel.com with ESMTP; 18 Mar 2015 02:00:41 -0700 From: Tiejun Chen To: mst@redhat.com, kraxel@redhat.com, pbonzini@redhat.com, rth@twiddle.net Date: Wed, 18 Mar 2015 17:06:39 +0800 Message-Id: <1426669601-13891-9-git-send-email-tiejun.chen@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1426669601-13891-1-git-send-email-tiejun.chen@intel.com> References: <1426669601-13891-1-git-send-email-tiejun.chen@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.65 Cc: allen.m.kay@intel.com, qemu-devel@nongnu.org Subject: [Qemu-devel] [v7][PATCH 08/10] xen, gfx passthrough: register a isa bridge X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Currently we just register this isa bridge when we use IGD passthrough in Xen side. Signed-off-by: Tiejun Chen --- 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 fcc9f1c..2d5cebb 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -632,6 +632,21 @@ 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) @@ -680,6 +695,9 @@ 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 */