From nobody Mon Apr 29 09:42:32 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1506082791015715.3726053521103; Fri, 22 Sep 2017 05:19:51 -0700 (PDT) Received: from localhost ([::1]:58565 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dvMvo-0008Sd-Qx for importer@patchew.org; Fri, 22 Sep 2017 08:19:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51580) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dvMv2-00089G-J3 for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:18:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dvMuz-0005XK-Cc for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:18:56 -0400 Received: from chuckie.co.uk ([82.165.15.123]:39373 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dvMuz-0005W2-5h for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:18:53 -0400 Received: from host86-191-82-173.range86-191.btcentralplus.com ([86.191.82.173] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dvMus-0003Ny-Jj; Fri, 22 Sep 2017 13:18:47 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, mst@redhat.com, marcel@redhat.com Date: Fri, 22 Sep 2017 13:18:31 +0100 Message-Id: <1506082711-16004-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 X-SA-Exim-Connect-IP: 86.191.82.173 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCH] pci: allow 32-bit PCI IO accesses to pass through the PCI bridge X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Whilst the underlying PCI bridge implementation supports 32-bit PCI IO accesses, unfortunately they are truncated at the legacy 64K limit. Signed-off-by: Mark Cave-Ayland Reviewed-by: Richard Henderson --- hw/pci/pci_bridge.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c index 17feae5..a47d257 100644 --- a/hw/pci/pci_bridge.c +++ b/hw/pci/pci_bridge.c @@ -379,7 +379,8 @@ void pci_bridge_initfn(PCIDevice *dev, const char *type= name) sec_bus->address_space_mem =3D &br->address_space_mem; memory_region_init(&br->address_space_mem, OBJECT(br), "pci_bridge_pci= ", UINT64_MAX); sec_bus->address_space_io =3D &br->address_space_io; - memory_region_init(&br->address_space_io, OBJECT(br), "pci_bridge_io",= 65536); + memory_region_init(&br->address_space_io, OBJECT(br), "pci_bridge_io", + UINT32_MAX); br->windows =3D pci_bridge_region_init(br); QLIST_INIT(&sec_bus->child); QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling); --=20 1.7.10.4