From patchwork Sat Feb 27 00:23:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laszlo Ersek X-Patchwork-Id: 63130 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp145842lbc; Fri, 26 Feb 2016 16:24:12 -0800 (PST) X-Received: by 10.67.24.104 with SMTP id ih8mr5984754pad.124.1456532645220; Fri, 26 Feb 2016 16:24:05 -0800 (PST) Return-Path: Received: from ml01.01.org (ml01.01.org. [198.145.21.10]) by mx.google.com with ESMTPS id u27si23119829pfi.159.2016.02.26.16.24.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 26 Feb 2016 16:24:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) client-ip=198.145.21.10; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 67D7B1A1E57; Fri, 26 Feb 2016 16:24:06 -0800 (PST) X-Original-To: edk2-devel@ml01.01.org Delivered-To: edk2-devel@ml01.01.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 5C8A91A1E57 for ; Fri, 26 Feb 2016 16:24:05 -0800 (PST) Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 916BD337742; Sat, 27 Feb 2016 00:23:59 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-113-45.phx2.redhat.com [10.3.113.45]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1R0NdFb026697; Fri, 26 Feb 2016 19:23:58 -0500 From: Laszlo Ersek To: edk2-devel-01 Date: Sat, 27 Feb 2016 01:23:30 +0100 Message-Id: <1456532616-32475-12-git-send-email-lersek@redhat.com> In-Reply-To: <1456532616-32475-1-git-send-email-lersek@redhat.com> References: <1456532616-32475-1-git-send-email-lersek@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 Cc: Ruiyu Ni , Jordan Justen , Marcel Apfelbaum Subject: [edk2] [PATCH 11/17] OvmfPkg: PciHostBridgeLib: clear RootBus->DmaAbove4G X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" When this BOOLEAN member is FALSE, and the caller tries to set up a DMA transfer between a PCI device and a host buffer not entirely under 4GB, then "MdeModulePkg/Bus/Pci/PciHostBridgeDxe" sets up a bounce buffer under 4GB, in the implementation of EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.Map(). Since that's exactly what RootBridgeIoMap() does in "OvmfPkg/PciHostBridgeDxe/PciRootBridgeIo.c", stick with it in this conversion. Cc: Jordan Justen Cc: Ruiyu Ni Cc: Marcel Apfelbaum Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek --- OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c | 2 ++ 1 file changed, 2 insertions(+) -- 1.8.3.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c index d7b01114c4aa..ba08c9b43b54 100644 --- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c +++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c @@ -84,6 +84,8 @@ InitRootBridge ( EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16; RootBus->Attributes = RootBus->Supports; + RootBus->DmaAbove4G = FALSE; + return EFI_OUT_OF_RESOURCES; }