From nobody Mon Feb 9 12:42:39 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; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1643049375; cv=none; d=zohomail.com; s=zohoarc; b=TNmsqPI0V5mdChGnyXxHRS2KgX1BMXpJtafSSGEu3cJW9RddViBuuPieDwWx9Xy65huCrQPgqoIrJCL5wcMQJKr+lER7zW3yuxu4bGk5E/wjE2Hx/NUuyjXGl/m82w4UGaZuEP9FIlaRqT+S4As+MpRoecneAM2O0miEQ4R98qQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1643049375; 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:Reply-To:References:Sender:Subject:To; bh=fWXBx+WF2cPmR5Pk3kwrNBM22g9AwIeim7Z6p3Zqr8M=; b=XJ3Qyd9rF8xIBgHR15L9SeVTKm2PZhaqSIJtR00uC9FV8tRNQ6txGuAbrcLThZ68CJd0U64B4L+FeGEimhQXUSXnhWhDYS54nmGJ7ElCgWRGobUYfxbaFJr41XoX3Bj4mgkv1ovkzoJskb58PKaM6aPOeAAHS8mf+wWerTnoI1c= 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; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1643049375610197.4966646780207; Mon, 24 Jan 2022 10:36:15 -0800 (PST) Received: from localhost ([::1]:49504 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nC4CM-0005V4-Lu for importer@patchew.org; Mon, 24 Jan 2022 13:36:14 -0500 Received: from eggs.gnu.org ([209.51.188.92]:59128) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3DB-0000i8-Al for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:33:06 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2199) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3D9-0001gZ-Fs for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:33:00 -0500 Received: from fraeml703-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4JjH9v3rSxz686wr; Tue, 25 Jan 2022 01:32:35 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml703-chm.china.huawei.com (10.206.15.52) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.21; Mon, 24 Jan 2022 18:32:56 +0100 Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) 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 15.1.2308.21; Mon, 24 Jan 2022 17:32:55 +0000 To: , Marcel Apfelbaum , "Michael S . Tsirkin" , Igor Mammedov CC: , Ben Widawsky , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Peter Maydell , , Shameerali Kolothum Thodi , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Saransh Gupta1 , Shreyas Shah , Chris Browy , Samarth Saxena , "Dan Williams" Subject: [PATCH v4 31/42] hw/pci-host/gpex-acpi: Add support for dsdt construction for pxb-cxl Date: Mon, 24 Jan 2022 17:16:54 +0000 Message-ID: <20220124171705.10432-32-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> References: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhreml740-chm.china.huawei.com (10.201.108.190) 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: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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: 2.1.29 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" Reply-to: Jonathan Cameron From: Jonathan Cameron via X-ZM-MESSAGEID: 1643049378689100001 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 Signed-off-by: Ben Widawsky --- hw/arm/Kconfig | 1 + hw/pci-host/gpex-acpi.c | 22 +++++++++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 2e0049196d..3df419fa6d 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -29,6 +29,7 @@ config ARM_VIRT select ACPI_APEI select ACPI_VIOT select VIRTIO_MEM_SUPPORTED + select ACPI_CXL =20 config CHEETAH bool diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c index e7e162a00a..fb60aa517f 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) { @@ -139,6 +140,7 @@ 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; @@ -153,9 +155,19 @@ 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"= ))); @@ -175,7 +187,11 @@ 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 2.32.0