From patchwork Thu Nov 3 09:27:20 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 690738 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3t8g5P3sVTz9t0v for ; Thu, 3 Nov 2016 20:43:37 +1100 (AEDT) Received: from localhost ([::1]:59901 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2EYY-0007of-Ow for incoming@patchwork.ozlabs.org; Thu, 03 Nov 2016 05:43:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58336) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2EJb-0003na-Ba for qemu-devel@nongnu.org; Thu, 03 Nov 2016 05:28:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c2EJa-0001tz-Ga for qemu-devel@nongnu.org; Thu, 03 Nov 2016 05:28:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43380) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c2EJa-0001td-Az for qemu-devel@nongnu.org; Thu, 03 Nov 2016 05:28:06 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 872E4C057EC9; Thu, 3 Nov 2016 09:28:05 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (vpn1-5-39.pek2.redhat.com [10.72.5.39]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id uA39ROZT022549; Thu, 3 Nov 2016 05:28:02 -0400 From: Jason Wang To: mst@redhat.com, peterx@redhat.com, wexu@redhat.com, qemu-devel@nongnu.org Date: Thu, 3 Nov 2016 17:27:20 +0800 Message-Id: <1478165243-4767-9-git-send-email-jasowang@redhat.com> In-Reply-To: <1478165243-4767-1-git-send-email-jasowang@redhat.com> References: <1478165243-4767-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Thu, 03 Nov 2016 09:28:05 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH V2 08/11] acpi: add ATSR for q35 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: vkaplans@redhat.com, pbonzini@redhat.com, Jason Wang , cornelia.huck@de.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch provides ATSR which was a requirement for software that wants to enable ATS on endpoint devices behind a Root Port. This is done simply by setting ALL_PORTS which indicates all PCI-Express Root Ports support ATS transactions. Signed-off-by: Jason Wang --- hw/i386/acpi-build.c | 9 +++++++++ include/hw/acpi/acpi-defs.h | 12 ++++++++++++ 2 files changed, 21 insertions(+) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 5cd1da9..2d10b0f 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2568,6 +2568,7 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker) AcpiTableDmar *dmar; AcpiDmarHardwareUnit *drhd; + AcpiDmarRootPortATS *atsr; uint8_t dmar_flags = 0; X86IOMMUState *iommu = x86_iommu_get_default(); AcpiDmarDeviceScope *scope = NULL; @@ -2600,6 +2601,14 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker) scope->bus = Q35_PSEUDO_BUS_PLATFORM; scope->path[0] = cpu_to_le16(Q35_PSEUDO_DEVFN_IOAPIC); + if (iommu->dt_supported) { + atsr = acpi_data_push(table_data, sizeof(*atsr)); + atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR); + atsr->length = cpu_to_le16(sizeof(*atsr)); + atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS; + atsr->pci_segment = cpu_to_le16(0); + } + build_header(linker, table_data, (void *)(table_data->data + dmar_start), "DMAR", table_data->len - dmar_start, 1, NULL, NULL); } diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index d1d1d61..420ea36 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -635,8 +635,20 @@ struct AcpiDmarHardwareUnit { } QEMU_PACKED; typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit; +/* Type 2: Root Port ATS Capability Reporting Structure */ +struct AcpiDmarRootPortATS { + uint16_t type; + uint16_t length; + uint8_t flags; + uint8_t reserved; + uint16_t pci_segment; + AcpiDmarDeviceScope scope[0]; +} QEMU_PACKED; +typedef struct AcpiDmarRootPortATS AcpiDmarRootPortATS; + /* Masks for Flags field above */ #define ACPI_DMAR_INCLUDE_PCI_ALL 1 +#define ACPI_DMAR_ATSR_ALL_PORTS 1 /* * Input Output Remapping Table (IORT)