From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6AD14C433DB for ; Tue, 2 Feb 2021 14:10:16 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0948364E9C for ; Tue, 2 Feb 2021 14:10:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0948364E9C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=Huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51412 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6wNj-0001h1-5w for qemu-devel@archiver.kernel.org; Tue, 02 Feb 2021 09:10:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33824) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6wBQ-0006Uh-15 for qemu-devel@nongnu.org; Tue, 02 Feb 2021 08:57:36 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2096) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6wBN-0005zS-Ih for qemu-devel@nongnu.org; Tue, 02 Feb 2021 08:57:31 -0500 Received: from fraeml706-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4DVR6m5zQMz67h9N; Tue, 2 Feb 2021 21:51:12 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml706-chm.china.huawei.com (10.206.15.55) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2106.2; Tue, 2 Feb 2021 14:57:23 +0100 Received: from localhost (10.47.79.68) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Tue, 2 Feb 2021 13:57:20 +0000 Date: Tue, 2 Feb 2021 13:56:34 +0000 From: Jonathan Cameron To: Ben Widawsky Subject: Re: [RFC PATCH v3 14/31] acpi/pci: Consolidate host bridge setup Message-ID: <20210202135634.0000325d@Huawei.com> In-Reply-To: <20210202005948.241655-15-ben.widawsky@intel.com> References: <20210202005948.241655-1-ben.widawsky@intel.com> <20210202005948.241655-15-ben.widawsky@intel.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; i686-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.47.79.68] X-ClientProxiedBy: lhreml745-chm.china.huawei.com (10.201.108.195) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Hildenbrand , Vishal Verma , "John Groves \(jgroves\)" , Chris Browy , qemu-devel@nongnu.org, linux-cxl@vger.kernel.org, Markus Armbruster , "Michael S. Tsirkin" , Igor Mammedov , Dan Williams , Ira Weiny , Philippe =?ISO-8859-1?Q?Mathieu-Da?= =?ISO-8859-1?Q?ud=E9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, 1 Feb 2021 16:59:31 -0800 Ben Widawsky wrote: > This cleanup will make it easier to add support for CXL to the mix. > > Signed-off-by: Ben Widawsky One trivial but up to you on whether you think it's worth changing. > --- > hw/i386/acpi-build.c | 31 +++++++++++++++++-------------- > 1 file changed, 17 insertions(+), 14 deletions(-) > > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > index f56d699c7f..cf6eb54c22 100644 > --- a/hw/i386/acpi-build.c > +++ b/hw/i386/acpi-build.c > @@ -1194,6 +1194,20 @@ static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func) > aml_append(table, scope); > } > > +enum { PCI, PCIE }; > +static void init_pci_acpi(Aml *dev, int uid, int type) > +{ > + if (type == PCI) { > + aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); > + aml_append(dev, aml_name_decl("_UID", aml_int(uid))); > + } else { > + aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); > + aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); > + aml_append(dev, aml_name_decl("_UID", aml_int(uid))); > + aml_append(dev, build_q35_osc_method()); > + } Gut feeling would be this will end up nicer as a switch. I suspect this isn't the last time this will get extended! > +} > + > static void > build_dsdt(GArray *table_data, BIOSLinker *linker, > AcpiPmInfo *pm, AcpiMiscInfo *misc, > @@ -1222,9 +1236,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > if (misc->is_piix4) { > sb_scope = aml_scope("_SB"); > dev = aml_device("PCI0"); > - aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); > + init_pci_acpi(dev, 0, PCI); > aml_append(dev, aml_name_decl("_ADR", aml_int(0))); > - aml_append(dev, aml_name_decl("_UID", aml_int(0))); > aml_append(sb_scope, dev); > aml_append(dsdt, sb_scope); > > @@ -1238,11 +1251,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > } else { > sb_scope = aml_scope("_SB"); > dev = aml_device("PCI0"); > - aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); > - aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); > + init_pci_acpi(dev, 0, PCIE); > aml_append(dev, aml_name_decl("_ADR", aml_int(0))); > - aml_append(dev, aml_name_decl("_UID", aml_int(0))); > - aml_append(dev, build_q35_osc_method()); > aml_append(sb_scope, dev); > > if (pm->smi_on_cpuhp) { > @@ -1345,15 +1355,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > > scope = aml_scope("\\_SB"); > dev = aml_device("PC%.02X", bus_num); > - aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); > aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); > - if (pci_bus_is_express(bus)) { > - aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); > - aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); > - aml_append(dev, build_q35_osc_method()); > - } else { > - aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); > - } > + init_pci_acpi(dev, bus_num, pci_bus_is_express(bus) ? PCIE : PCI); > > if (numa_node != NUMA_NODE_UNASSIGNED) { > aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));