From patchwork Wed Aug 4 03:48:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 12417753 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DD1BC4338F for ; Wed, 4 Aug 2021 03:49:20 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6F4EF603E7 for ; Wed, 4 Aug 2021 03:49:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6F4EF603E7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:54968 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mB7uA-0000M6-Fq for qemu-devel@archiver.kernel.org; Tue, 03 Aug 2021 23:49:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44744) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mB7tJ-0006lr-U6 for qemu-devel@nongnu.org; Tue, 03 Aug 2021 23:48:25 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:57822) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mB7tI-0000N9-Dt for qemu-devel@nongnu.org; Tue, 03 Aug 2021 23:48:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1628048903; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0ptP2saJcjmNSscLJyKkxAtiVNxPPWQgEJ848xCAK5I=; b=PI6uxL4ON4ba99ULNue7IH+maM0FybrPIq7yifdU1Crv6lNkDEfVFr8iuTEu80LUDngc98 tXHWZs94O+h/g4fBfNqYTArbeZRxsuopOp3IXumlguQ+PCvr6+/QB3UO5D6TPtTYmcBpej bMJ+aOBMhnkt56/t0ue1gL4rTLu7wS0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-204-O_KCfFESP8-eyzzcGBo9mg-1; Tue, 03 Aug 2021 23:48:22 -0400 X-MC-Unique: O_KCfFESP8-eyzzcGBo9mg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3D47F824F8D; Wed, 4 Aug 2021 03:48:21 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-234.pek2.redhat.com [10.72.12.234]) by smtp.corp.redhat.com (Postfix) with ESMTP id CDB4D781E8; Wed, 4 Aug 2021 03:48:17 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org Subject: [PATCH 1/3] virtio-bus: introduce iommu_enabled() Date: Wed, 4 Aug 2021 11:48:01 +0800 Message-Id: <20210804034803.1644-2-jasowang@redhat.com> In-Reply-To: <20210804034803.1644-1-jasowang@redhat.com> References: <20210804034803.1644-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mst@redhat.com, Jason Wang , Wei.Huang2@amd.com, dgilbert@redhat.com, peterx@redhat.com, Sriyash.Caculo@amd.com, pbonzini@redhat.com, chao.gao@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch introduce a new method for the virtio-bus for the transport to report whether or not the IOMMU is enabled for the device. Signed-off-by: Jason Wang --- hw/virtio/virtio-bus.c | 14 ++++++++++++++ include/hw/virtio/virtio-bus.h | 4 +++- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index 859978d248..d23db98c56 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -325,6 +325,20 @@ static char *virtio_bus_get_fw_dev_path(DeviceState *dev) return NULL; } +bool virtio_bus_device_iommu_enabled(VirtIODevice *vdev) +{ + DeviceState *qdev = DEVICE(vdev); + BusState *qbus = BUS(qdev_get_parent_bus(qdev)); + VirtioBusState *bus = VIRTIO_BUS(qbus); + VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus); + + if (!klass->iommu_enabled) { + return false; + } + + return klass->iommu_enabled(qbus->parent); +} + static void virtio_bus_class_init(ObjectClass *klass, void *data) { BusClass *bus_class = BUS_CLASS(klass); diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index ef8abe49c5..7ab8c9dab0 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -93,6 +93,7 @@ struct VirtioBusClass { */ bool has_variable_vring_alignment; AddressSpace *(*get_dma_as)(DeviceState *d); + bool (*iommu_enabled)(DeviceState *d); }; struct VirtioBusState { @@ -154,5 +155,6 @@ void virtio_bus_release_ioeventfd(VirtioBusState *bus); int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign); /* Tell the bus that the ioeventfd handler is no longer required. */ void virtio_bus_cleanup_host_notifier(VirtioBusState *bus, int n); - +/* Whether the IOMMU is enabled for this device */ +bool virtio_bus_device_iommu_enabled(VirtIODevice *vdev); #endif /* VIRTIO_BUS_H */