From nobody Tue Feb 10 04:03:02 2026 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 (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1513868123115754.5202077278948; Thu, 21 Dec 2017 06:55:23 -0800 (PST) Received: from localhost ([::1]:53364 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eS2Fi-0003mT-1V for importer@patchew.org; Thu, 21 Dec 2017 09:55:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45980) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eS1qp-00086T-D4 for qemu-devel@nongnu.org; Thu, 21 Dec 2017 09:29:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eS1qo-0005sa-Em for qemu-devel@nongnu.org; Thu, 21 Dec 2017 09:29:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39314) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eS1qo-0005rb-4P for qemu-devel@nongnu.org; Thu, 21 Dec 2017 09:29:34 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 40626820F3; Thu, 21 Dec 2017 14:29:33 +0000 (UTC) Received: from redhat.com (ovpn-124-215.rdu2.redhat.com [10.10.124.215]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4E4A6503B3; Thu, 21 Dec 2017 14:29:26 +0000 (UTC) Date: Thu, 21 Dec 2017 16:29:25 +0200 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1513866427-27125-17-git-send-email-mst@redhat.com> References: <1513866427-27125-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1513866427-27125-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 21 Dec 2017 14:29:33 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 16/25] hw/pci-host/piix: QOM'ify the IGD Passthrough host 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: , Cc: Marcel Apfelbaum , Peter Maydell , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" From: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Marcel Apfelbaum --- hw/pci-host/piix.c | 45 ++++++++++++++++++++------------------------- 1 file changed, 20 insertions(+), 25 deletions(-) diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index effe3db..0e60834 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -804,60 +804,55 @@ static const IGDHostInfo igd_host_bridge_infos[] =3D { {0xa8, 4}, /* SNB: base of GTT stolen memory */ }; =20 -static int host_pci_config_read(int pos, int len, uint32_t *val) +static void host_pci_config_read(int pos, int len, uint32_t *val, Error **= errp) { - char path[PATH_MAX]; - int config_fd; - ssize_t size =3D sizeof(path); + int rc, config_fd; /* Access real host bridge. */ - int rc =3D snprintf(path, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%= d/%s", - 0, 0, 0, 0, "config"); - int ret =3D 0; - - if (rc >=3D size || rc < 0) { - return -ENODEV; - } + char *path =3D g_strdup_printf("/sys/bus/pci/devices/%04x:%02x:%02x.%d= /%s", + 0, 0, 0, 0, "config"); =20 config_fd =3D open(path, O_RDWR); if (config_fd < 0) { - return -ENODEV; + error_setg_errno(errp, errno, "Failed to open: %s", path); + goto out; } =20 if (lseek(config_fd, pos, SEEK_SET) !=3D pos) { - ret =3D -errno; - goto out; + error_setg_errno(errp, errno, "Failed to seek: %s", path); + goto out_close_fd; } =20 do { rc =3D read(config_fd, (uint8_t *)val, len); } while (rc < 0 && (errno =3D=3D EINTR || errno =3D=3D EAGAIN)); if (rc !=3D len) { - ret =3D -errno; + error_setg_errno(errp, errno, "Failed to read: %s", path); } =20 -out: +out_close_fd: close(config_fd); - return ret; +out: + g_free(path); } =20 -static int igd_pt_i440fx_initfn(struct PCIDevice *pci_dev) +static void igd_pt_i440fx_realize(PCIDevice *pci_dev, Error **errp) { uint32_t val =3D 0; - int rc, i, num; + int i, num; int pos, len; + Error *local_err =3D NULL; =20 num =3D ARRAY_SIZE(igd_host_bridge_infos); for (i =3D 0; i < num; i++) { pos =3D igd_host_bridge_infos[i].offset; len =3D igd_host_bridge_infos[i].len; - rc =3D host_pci_config_read(pos, len, &val); - if (rc) { - return -ENODEV; + host_pci_config_read(pos, len, &val, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; } pci_default_write_config(pci_dev, pos, val, len); } - - return 0; } =20 static void igd_passthrough_i440fx_class_init(ObjectClass *klass, void *da= ta) @@ -865,7 +860,7 @@ static void igd_passthrough_i440fx_class_init(ObjectCla= ss *klass, void *data) DeviceClass *dc =3D DEVICE_CLASS(klass); PCIDeviceClass *k =3D PCI_DEVICE_CLASS(klass); =20 - k->init =3D igd_pt_i440fx_initfn; + k->realize =3D igd_pt_i440fx_realize; dc->desc =3D "IGD Passthrough Host bridge"; } =20 --=20 MST