From nobody Wed Nov 5 08:12:27 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; 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 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533586678655411.437414683302; Mon, 6 Aug 2018 13:17:58 -0700 (PDT) Received: from localhost ([::1]:36100 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fmlwz-0007yg-Fi for importer@patchew.org; Mon, 06 Aug 2018 16:17:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fmluQ-0006Es-0f for qemu-devel@nongnu.org; Mon, 06 Aug 2018 16:15:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fmluP-0006hO-35 for qemu-devel@nongnu.org; Mon, 06 Aug 2018 16:15:17 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46918 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fmluL-0006fH-Bo; Mon, 06 Aug 2018 16:15:13 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D39328780F; Mon, 6 Aug 2018 20:15:12 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-58.ams2.redhat.com [10.36.116.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5C976215670D; Mon, 6 Aug 2018 20:15:10 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, alex.williamson@redhat.com, mst@redhat.com, jean-philippe.brucker@arm.com Date: Mon, 6 Aug 2018 22:14:34 +0200 Message-Id: <1533586484-5737-7-git-send-email-eric.auger@redhat.com> In-Reply-To: <1533586484-5737-1-git-send-email-eric.auger@redhat.com> References: <1533586484-5737-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 06 Aug 2018 20:15:12 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 06 Aug 2018 20:15:12 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eric.auger@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC v7 06/16] virtio-iommu: Implement attach/detach command 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: wei@redhat.com, kevin.tian@intel.com, tn@semihalf.com, will.deacon@arm.com, drjones@redhat.com, peterx@redhat.com, linuc.decode@gmail.com, bharat.bhushan@nxp.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This patch implements the endpoint attach/detach to/from a domain. Signed-off-by: Eric Auger --- hw/virtio/virtio-iommu.c | 43 +++++++++++++++++++++++++++++++++++-------- 1 file changed, 35 insertions(+), 8 deletions(-) diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 8bbb116..4cb6e15 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -83,8 +83,8 @@ static void virtio_iommu_detach_endpoint_from_domain(viom= mu_endpoint *ep) ep->domain =3D NULL; } =20 -viommu_endpoint *virtio_iommu_get_endpoint(VirtIOIOMMU *s, uint32_t ep_id); -viommu_endpoint *virtio_iommu_get_endpoint(VirtIOIOMMU *s, uint32_t ep_id) +static viommu_endpoint *virtio_iommu_get_endpoint(VirtIOIOMMU *s, + uint32_t ep_id) { viommu_endpoint *ep; =20 @@ -113,8 +113,8 @@ static void virtio_iommu_put_endpoint(gpointer data) g_free(ep); } =20 -viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s, uint32_t domain_id); -viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s, uint32_t domain_id) +static viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s, + uint32_t domain_id) { viommu_domain *domain; =20 @@ -193,6 +193,8 @@ static int virtio_iommu_attach(VirtIOIOMMU *s, uint32_t domain_id =3D le32_to_cpu(req->domain); uint32_t ep_id =3D le32_to_cpu(req->endpoint); uint32_t reserved =3D le32_to_cpu(req->reserved); + viommu_domain *domain; + viommu_endpoint *ep; =20 trace_virtio_iommu_attach(domain_id, ep_id); =20 @@ -200,7 +202,22 @@ static int virtio_iommu_attach(VirtIOIOMMU *s, return VIRTIO_IOMMU_S_INVAL; } =20 - return VIRTIO_IOMMU_S_UNSUPP; + ep =3D virtio_iommu_get_endpoint(s, ep_id); + if (ep->domain) { + /* + * the device is already attached to a domain, + * detach it first + */ + virtio_iommu_detach_endpoint_from_domain(ep); + } + + domain =3D virtio_iommu_get_domain(s, domain_id); + QLIST_INSERT_HEAD(&domain->endpoint_list, ep, next); + + ep->domain =3D domain; + g_tree_ref(domain->mappings); + + return VIRTIO_IOMMU_S_OK; } =20 static int virtio_iommu_detach(VirtIOIOMMU *s, @@ -208,14 +225,24 @@ static int virtio_iommu_detach(VirtIOIOMMU *s, { uint32_t ep_id =3D le32_to_cpu(req->endpoint); uint32_t reserved =3D le32_to_cpu(req->reserved); - - trace_virtio_iommu_detach(ep_id); + viommu_endpoint *ep; =20 if (reserved) { return VIRTIO_IOMMU_S_INVAL; } =20 - return VIRTIO_IOMMU_S_UNSUPP; + ep =3D g_tree_lookup(s->endpoints, GUINT_TO_POINTER(ep_id)); + if (!ep) { + return VIRTIO_IOMMU_S_NOENT; + } + + if (!ep->domain) { + return VIRTIO_IOMMU_S_INVAL; + } + + virtio_iommu_detach_endpoint_from_domain(ep); + trace_virtio_iommu_detach(ep_id); + return VIRTIO_IOMMU_S_OK; } =20 static int virtio_iommu_map(VirtIOIOMMU *s, --=20 2.5.5