From nobody Tue Feb 10 01:33:16 2026 Delivered-To: importer@patchew.org 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; 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1580781115887640.4657849227939; Mon, 3 Feb 2020 17:51:55 -0800 (PST) Received: from localhost ([::1]:50128 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iynNa-0005Pb-RJ for importer@patchew.org; Mon, 03 Feb 2020 20:51:54 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48005) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iynIW-0007lM-JI for qemu-devel@nongnu.org; Mon, 03 Feb 2020 20:46:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iynIS-0008Jj-O1 for qemu-devel@nongnu.org; Mon, 03 Feb 2020 20:46:40 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:2751 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iynIJ-0008Av-3l; Mon, 03 Feb 2020 20:46:27 -0500 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 2A6CCDB06235DFBF1763; Tue, 4 Feb 2020 09:46:25 +0800 (CST) Received: from linux-TFkxOR.huawei.com (10.175.104.212) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.439.0; Tue, 4 Feb 2020 09:46:16 +0800 From: Heyi Guo To: Subject: [PATCH v3 3/7] arm/virt/acpi: remove _ADR from devices identified by _HID Date: Tue, 4 Feb 2020 09:43:21 +0800 Message-ID: <20200204014325.16279-4-guoheyi@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200204014325.16279-1-guoheyi@huawei.com> References: <20200204014325.16279-1-guoheyi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.104.212] X-CFilter-Loop: Reflected 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: 45.249.212.191 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 , "Michael S. Tsirkin" , Shannon Zhao , qemu-arm@nongnu.org, Igor Mammedov , Heyi Guo , wanghaibin.wang@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" According to ACPI spec, _ADR should be used for device on a bus that has a standard enumeration algorithm, but not for device which is on system bus and must be enumerated by OSPM. And it is not recommended to contain both _HID and _ADR in a single device. See ACPI 6.3, section 6.1, top of page 343: A device object must contain either an _HID object or an _ADR object, but should not contain both. (https://uefi.org/sites/default/files/resources/ACPI_6_3_May16.pdf) Signed-off-by: Heyi Guo Acked-by: Igor Mammedov Acked-by: Michael S. Tsirkin Reviewed-by: Michael S. Tsirkin --- Cc: Shannon Zhao Cc: Peter Maydell Cc: "Michael S. Tsirkin" Cc: Igor Mammedov Cc: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org --- hw/arm/virt-acpi-build.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 9f4c7d1889..be752c0ad8 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -78,11 +78,6 @@ static void acpi_dsdt_add_uart(Aml *scope, const MemMapE= ntry *uart_memmap, AML_EXCLUSIVE, &uart_irq, 1)); aml_append(dev, aml_name_decl("_CRS", crs)); =20 - /* The _ADR entry is used to link this device to the UART described - * in the SPCR table, i.e. SPCR.base_address.address =3D=3D _ADR. - */ - aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base))); - aml_append(scope, dev); } =20 @@ -170,7 +165,6 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapE= ntry *memmap, aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"))); aml_append(dev, aml_name_decl("_SEG", aml_int(0))); aml_append(dev, aml_name_decl("_BBN", aml_int(0))); - aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, aml_name_decl("_UID", aml_string("PCI0"))); aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device"))); aml_append(dev, aml_name_decl("_CCA", aml_int(1))); @@ -334,7 +328,6 @@ static void acpi_dsdt_add_gpio(Aml *scope, const MemMap= Entry *gpio_memmap, { Aml *dev =3D aml_device("GPO0"); aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061"))); - aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); =20 Aml *crs =3D aml_resource_template(); @@ -364,7 +357,6 @@ static void acpi_dsdt_add_power_button(Aml *scope) { Aml *dev =3D aml_device(ACPI_POWER_BUTTON_DEVICE); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C"))); - aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); aml_append(scope, dev); } --=20 2.19.1