From nobody Mon Nov 10 19:45:33 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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 (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.intel.com ARC-Seal: i=1; a=rsa-sha256; t=1558409761; cv=none; d=zoho.com; s=zohoarc; b=W7AqyOi9oUCfYXvHZntP8wvoB2spZHOyu0C5Gj1QHst03ZgDlVRbkeSotrLkvVGKI4lHSf+qwojJPRK+sFF5+frrjZ8GSnavRmIlQG34z7mCsLuSGNA/1DQbjVbS5GldwyPX/uepGy58t0nJCZlD3DI0866OrHnCd7sXw4Mnp+0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1558409761; h=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:ARC-Authentication-Results; bh=CqmxaBfXdAE7a6xBxu9zSuZV7bID4QszY54tu6fsTHE=; b=MICvUrLqMBFNUa/6fLC19mfIvjtGsx18N8s5g1C/2+dyS9kcm574h35N5FxWlcTssyKDnnfDx35U8cv/GcqNmrlpLs870E2fDENbWKdIkofdrJkDrZsbU8V95us24gGZ+JCL+vl0RM7dlD8Zbpn2WDxGvObnq7PBBXcJXYVzPQk= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1558409761526102.30938433795723; Mon, 20 May 2019 20:36:01 -0700 (PDT) Received: from localhost ([127.0.0.1]:45853 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSvZD-000737-IX for importer@patchew.org; Mon, 20 May 2019 23:35:55 -0400 Received: from eggs.gnu.org ([209.51.188.92]:55376) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSvXL-0005xA-92 for qemu-devel@nongnu.org; Mon, 20 May 2019 23:34:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSvXJ-0004Li-7h for qemu-devel@nongnu.org; Mon, 20 May 2019 23:33:59 -0400 Received: from mga09.intel.com ([134.134.136.24]:39825) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hSvXD-0004Jg-JT; Mon, 20 May 2019 23:33:52 -0400 Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 May 2019 20:33:50 -0700 Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by fmsmga006.fm.intel.com with ESMTP; 20 May 2019 20:33:48 -0700 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 From: Wei Yang To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Date: Tue, 21 May 2019 11:32:49 +0800 Message-Id: <20190521033249.1960-3-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190521033249.1960-1-richardw.yang@linux.intel.com> References: <20190521033249.1960-1-richardw.yang@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.24 Subject: [Qemu-devel] [PATCH v5 2/2] acpi: pci: use build_append_foo() API to construct MCFG 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: yang.zhong@intel.com, peter.maydell@linaro.org, thuth@redhat.com, mst@redhat.com, shannon.zhaosl@gmail.com, Wei Yang , imammedo@redhat.com, philmd@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" build_append_foo() API doesn't need explicit endianness conversions which eliminates a source of errors and it makes build_mcfg() look like declarative definition of MCFG table in ACPI spec, which makes it easy to review. Signed-off-by: Wei Yang Suggested-by: Igor Mammedov Reviewed-by: Igor Mammedov --- v5: * miss the reserved[8] of MCFG in last version, add it back * drop SOBs and make sure bios-tables-test all OK --- hw/acpi/pci.c | 35 +++++++++++++++++++++++------------ include/hw/acpi/acpi-defs.h | 18 ------------------ 2 files changed, 23 insertions(+), 30 deletions(-) diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c index fa0fa30bb9..49df7b7d54 100644 --- a/hw/acpi/pci.c +++ b/hw/acpi/pci.c @@ -30,17 +30,28 @@ =20 void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info) { - AcpiTableMcfg *mcfg; - int len =3D sizeof(*mcfg) + sizeof(mcfg->allocation[0]); - - mcfg =3D acpi_data_push(table_data, len); - mcfg->allocation[0].address =3D cpu_to_le64(info->base); - - /* Only a single allocation so no need to play with segments */ - mcfg->allocation[0].pci_segment =3D cpu_to_le16(0); - mcfg->allocation[0].start_bus_number =3D 0; - mcfg->allocation[0].end_bus_number =3D PCIE_MMCFG_BUS(info->size - 1); - - build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, N= ULL); + int mcfg_start =3D table_data->len; + + acpi_data_push(table_data, sizeof(AcpiTableHeader)); + + /* + * PCI Firmware Specification, Revision 3.0 + * 4.1.2 MCFG Table Description. + */ + /* Reserved */ + build_append_int_noprefix(table_data, 0, 8); + /* Base address, processor-relative */ + build_append_int_noprefix(table_data, info->base, 8); + /* PCI segment group number */ + build_append_int_noprefix(table_data, 0, 2); + /* Starting PCI Bus number */ + build_append_int_noprefix(table_data, 0, 1); + /* Final PCI Bus number */ + build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), = 1); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 4); + + build_header(linker, table_data, (void *)(table_data->data + mcfg_star= t), + "MCFG", table_data->len - mcfg_start, 1, NULL, NULL); } =20 diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index f9aa4bd398..57a3f58b0c 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -449,24 +449,6 @@ struct AcpiSratProcessorGiccAffinity { =20 typedef struct AcpiSratProcessorGiccAffinity AcpiSratProcessorGiccAffinity; =20 -/* PCI fw r3.0 MCFG table. */ -/* Subtable */ -struct AcpiMcfgAllocation { - uint64_t address; /* Base address, processor-relative */ - uint16_t pci_segment; /* PCI segment group number */ - uint8_t start_bus_number; /* Starting PCI Bus number */ - uint8_t end_bus_number; /* Final PCI Bus number */ - uint32_t reserved; -} QEMU_PACKED; -typedef struct AcpiMcfgAllocation AcpiMcfgAllocation; - -struct AcpiTableMcfg { - ACPI_TABLE_HEADER_DEF; - uint8_t reserved[8]; - AcpiMcfgAllocation allocation[0]; -} QEMU_PACKED; -typedef struct AcpiTableMcfg AcpiTableMcfg; - /* * TCPA Description Table * --=20 2.19.1