From patchwork Thu Mar 3 10:15:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laszlo Ersek X-Patchwork-Id: 63451 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp2857344lbc; Thu, 3 Mar 2016 02:16:27 -0800 (PST) X-Received: by 10.66.220.162 with SMTP id px2mr2479698pac.15.1457000180106; Thu, 03 Mar 2016 02:16:20 -0800 (PST) Return-Path: Received: from ml01.01.org (ml01.01.org. [2001:19d0:306:5::1]) by mx.google.com with ESMTPS id ai6si11566682pad.181.2016.03.03.02.16.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Mar 2016 02:16:20 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 2001:19d0:306:5::1 as permitted sender) client-ip=2001:19d0:306:5::1; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 2001:19d0:306:5::1 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 3F26C1A1ECD; Thu, 3 Mar 2016 02:16:27 -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 279B91A1E9B for ; Thu, 3 Mar 2016 02:16:26 -0800 (PST) Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (Postfix) with ESMTPS id 47F0C65403; Thu, 3 Mar 2016 10:16:16 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-113-60.phx2.redhat.com [10.3.113.60]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u23AFvXw027378; Thu, 3 Mar 2016 05:16:15 -0500 From: Laszlo Ersek To: edk2-devel@ml01.01.org Date: Thu, 3 Mar 2016 11:15:48 +0100 Message-Id: <1457000154-23081-10-git-send-email-lersek@redhat.com> In-Reply-To: <1457000154-23081-1-git-send-email-lersek@redhat.com> References: <1457000154-23081-1-git-send-email-lersek@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 03 Mar 2016 10:16:16 +0000 (UTC) Cc: Ruiyu Ni , Jordan Justen , Marcel Apfelbaum Subject: [edk2] [PATCH v2 09/15] 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 Reviewed-by: Ruiyu Ni Reviewed-by: Jordan Justen --- 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 db260291b822..f1cefe416996 100644 --- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c +++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c @@ -82,6 +82,8 @@ InitRootBridge ( EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16; RootBus->Attributes = RootBus->Supports; + RootBus->DmaAbove4G = FALSE; + return EFI_OUT_OF_RESOURCES; }