From nobody Mon Feb 9 05:19:08 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1612193562; cv=none; d=zohomail.com; s=zohoarc; b=gZrVrbVzfcXutcZ8XjYTMbX210XvKmIUef2oTwwGDQIpigKtu4ju2HKoGEaCz9CPSjlnSrc99P7AhRQgKLT4J2bSYW/ClyGd1HiLCeEcvIq2ygOtSmnTVjAL3XUZKX7JiSJU3zvBhLbhSbOJeucCXMFtFC/xRqUJee7hxaAx0bU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1612193562; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=OiNHi/f/5rf23gwG8x3RCLDmqDQKTOiqtsHst5+YWgU=; b=mdhmSYuwSP/VsZUrgNM8DqZfeMvRmKeHhu/1XT93B5D2gaESm7ysxizM8TrI4wVYVQw3U6b2AjYPPsK7V0U2AKrZCzzmADGIwFqWSf01xcRd2AgBVVN2liZfgKUU8cMx1KY9jkyrOh2AtJucdLK73H5hJyylc7Nf9SC0EMSlk1U= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1612193562647128.99245087407655; Mon, 1 Feb 2021 07:32:42 -0800 (PST) Received: from localhost ([::1]:35568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6bBx-0001MM-JN for importer@patchew.org; Mon, 01 Feb 2021 10:32:41 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:38792) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6bAZ-0008Gh-Cl for qemu-devel@nongnu.org; Mon, 01 Feb 2021 10:31:15 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2088) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6bAX-00087O-FD for qemu-devel@nongnu.org; Mon, 01 Feb 2021 10:31:15 -0500 Received: from fraeml704-chm.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4DTsJc3tFdz67jfx; Mon, 1 Feb 2021 23:27:44 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml704-chm.china.huawei.com (10.206.15.53) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2106.2; Mon, 1 Feb 2021 16:31:11 +0100 Received: from lhrphicprd00229.huawei.com (10.123.41.22) 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; Mon, 1 Feb 2021 15:31:11 +0000 From: Jonathan Cameron To: Subject: [RFC PATCH 1/3] hw/pci-host/gpex-acpi: Add support for dsdt construction for pxb-cxl Date: Mon, 1 Feb 2021 23:26:53 +0800 Message-ID: <20210201152655.31027-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20210201152655.31027-1-Jonathan.Cameron@huawei.com> References: <20210201152655.31027-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml751-chm.china.huawei.com (10.201.108.201) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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: Peter Maydell , Thomas Huth , Ben Widawsky , "Michael S . Tsirkin" , Jonathan Cameron , Vishal Verma , f.fangjian@huawei.com, Chris Browy , f4bug@amsat.org, linuxarm@openeuler.org, jcm@redhat.com, Prashant V Agarwal , Igor Mammedov , Dan Williams , Richard Henderson , alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" This adds code to instantiate the slightly extended ACPI root port description in DSDT as per the CXL 2.0 specification. Basically a cut and paste job from the i386/pc code. Signed-off-by: Jonathan Cameron --- hw/pci-host/gpex-acpi.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c index 446912d771..58f67ee4b0 100644 --- a/hw/pci-host/gpex-acpi.c +++ b/hw/pci-host/gpex-acpi.c @@ -5,6 +5,7 @@ #include "hw/pci/pci_bus.h" #include "hw/pci/pci_bridge.h" #include "hw/pci/pcie_host.h" +#include "hw/acpi/cxl.h" =20 static void acpi_dsdt_add_pci_route_table(Aml *dev, uint32_t irq) { @@ -155,6 +156,7 @@ void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *= cfg) QLIST_FOREACH(bus, &bus->child, sibling) { uint8_t bus_num =3D pci_bus_num(bus); uint8_t numa_node =3D pci_bus_numa_node(bus); + bool is_cxl; =20 if (!pci_bus_is_root(bus)) { continue; @@ -169,9 +171,19 @@ void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig = *cfg) nr_pcie_buses =3D bus_num; } =20 + is_cxl =3D pci_bus_is_cxl(bus); + dev =3D aml_device("PC%.02X", bus_num); - aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08"))); - aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"))); + if (is_cxl) { + struct Aml *pkg =3D aml_package(2); + aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016= "))); + aml_append(pkg, aml_eisaid("PNP0A08")); + aml_append(pkg, aml_eisaid("PNP0A03")); + aml_append(dev, aml_name_decl("_CID", pkg)); + } else { + aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08"= ))); + aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"= ))); + } aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); aml_append(dev, aml_name_decl("_STR", aml_unicode("pxb Device"= ))); @@ -190,7 +202,11 @@ void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig = *cfg) cfg->pio.base, 0, 0, 0); aml_append(dev, aml_name_decl("_CRS", crs)); =20 - acpi_dsdt_add_pci_osc(dev); + if (is_cxl) { + build_cxl_osc_method(dev); + } else { + acpi_dsdt_add_pci_osc(dev); + } =20 aml_append(scope, dev); } --=20 2.19.1