From mboxrd@z Thu Jan 1 00:00:00 1970 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 4C71EC2BA83 for ; Fri, 14 Feb 2020 13:30:22 +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 18B8A24649 for ; Fri, 14 Feb 2020 13:30:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LekoJZPR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 18B8A24649 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2b2z-0003fN-Ae for qemu-devel@archiver.kernel.org; Fri, 14 Feb 2020 08:30:21 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52165) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2b1d-0001ab-IP for qemu-devel@nongnu.org; Fri, 14 Feb 2020 08:28:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j2b1c-0008Ak-2B for qemu-devel@nongnu.org; Fri, 14 Feb 2020 08:28:57 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:52603 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j2b1b-00088Z-Tr for qemu-devel@nongnu.org; Fri, 14 Feb 2020 08:28:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581686935; 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=7XfbrPqq3Dt9SyCTxhSyVra/GnCrepGKOQlPZdwqAe4=; b=LekoJZPRcsmp3mjUtojNS+sfBILnV1lGSwQzkCnXENTteedY1iNjraOUWjSpjz2Aq6b7t0 u3neeq/Hfjp1K+G/CzJ0PY5vr8nf4x3ZdW7Xu530pOHRToFhgzoACHBHDsCSkmEMI4s14j 053i44QqeUgyR+szUnPOVtoUJpJPYV4= 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-212-PELZ7BcMND-Q5cnwvymkLA-1; Fri, 14 Feb 2020 08:28:54 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BF719100550E; Fri, 14 Feb 2020 13:28:52 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-37.ams2.redhat.com [10.36.116.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1614D5DA7D; Fri, 14 Feb 2020 13:28:44 +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, jean-philippe@linaro.org, dgilbert@redhat.com, quintela@redhat.com, mst@redhat.com, peterx@redhat.com Subject: [PATCH v16 05/10] virtio-iommu: Implement translate Date: Fri, 14 Feb 2020 14:27:40 +0100 Message-Id: <20200214132745.23392-6-eric.auger@redhat.com> In-Reply-To: <20200214132745.23392-1-eric.auger@redhat.com> References: <20200214132745.23392-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: PELZ7BcMND-Q5cnwvymkLA-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 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: kevin.tian@intel.com, bharatb.linux@gmail.com, tnowicki@marvell.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch implements the translate callback Signed-off-by: Eric Auger Reviewed-by: Jean-Philippe Brucker Reviewed-by: Michael S. Tsirkin --- v11 -> v12: - Added Jean's R-b - s/qemu_log_mask/error_report_once v10 -> v11: - take into account the new value struct and use g_tree_lookup_extended - switched to error_report_once v6 -> v7: - implemented bypass-mode v5 -> v6: - replace error_report by qemu_log_mask v4 -> v5: - check the device domain is not NULL - s/printf/error_report - set flags to IOMMU_NONE in case of all translation faults --- hw/virtio/trace-events | 1 + hw/virtio/virtio-iommu.c | 60 +++++++++++++++++++++++++++++++++++++++- 2 files changed, 60 insertions(+), 1 deletion(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 22162d6583..095aa8b509 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -71,3 +71,4 @@ virtio_iommu_get_endpoint(uint32_t ep_id) "Alloc endpoint= =3D%d" virtio_iommu_put_endpoint(uint32_t ep_id) "Free endpoint=3D%d" virtio_iommu_get_domain(uint32_t domain_id) "Alloc domain=3D%d" virtio_iommu_put_domain(uint32_t domain_id) "Free domain=3D%d" +virtio_iommu_translate_out(uint64_t virt_addr, uint64_t phys_addr, uint32_= t sid) "0x%"PRIx64" -> 0x%"PRIx64 " for sid=3D%d" diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 844d34c270..59e9cd3d9a 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -473,19 +473,77 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemo= ryRegion *mr, hwaddr addr, int iommu_idx) { IOMMUDevice *sdev =3D container_of(mr, IOMMUDevice, iommu_mr); + VirtIOIOMMUInterval interval, *mapping_key; + VirtIOIOMMUMapping *mapping_value; + VirtIOIOMMU *s =3D sdev->viommu; + VirtIOIOMMUEndpoint *ep; + bool bypass_allowed; uint32_t sid; + bool found; + + interval.low =3D addr; + interval.high =3D addr + 1; =20 IOMMUTLBEntry entry =3D { .target_as =3D &address_space_memory, .iova =3D addr, .translated_addr =3D addr, - .addr_mask =3D ~(hwaddr)0, + .addr_mask =3D (1 << ctz32(s->config.page_size_mask)) - 1, .perm =3D IOMMU_NONE, }; =20 + bypass_allowed =3D virtio_vdev_has_feature(&s->parent_obj, + VIRTIO_IOMMU_F_BYPASS); + sid =3D virtio_iommu_get_bdf(sdev); =20 trace_virtio_iommu_translate(mr->parent_obj.name, sid, addr, flag); + qemu_mutex_lock(&s->mutex); + + ep =3D g_tree_lookup(s->endpoints, GUINT_TO_POINTER(sid)); + if (!ep) { + if (!bypass_allowed) { + error_report_once("%s sid=3D%d is not known!!", __func__, sid)= ; + } else { + entry.perm =3D flag; + } + goto unlock; + } + + if (!ep->domain) { + if (!bypass_allowed) { + error_report_once("%s %02x:%02x.%01x not attached to any domai= n", + __func__, PCI_BUS_NUM(sid), + PCI_SLOT(sid), PCI_FUNC(sid)); + } else { + entry.perm =3D flag; + } + goto unlock; + } + + found =3D g_tree_lookup_extended(ep->domain->mappings, (gpointer)(&int= erval), + (void **)&mapping_key, + (void **)&mapping_value); + if (!found) { + error_report_once("%s no mapping for 0x%"PRIx64" for sid=3D%d", + __func__, addr, sid); + goto unlock; + } + + if (((flag & IOMMU_RO) && + !(mapping_value->flags & VIRTIO_IOMMU_MAP_F_READ)) || + ((flag & IOMMU_WO) && + !(mapping_value->flags & VIRTIO_IOMMU_MAP_F_WRITE))) { + error_report_once("%s permission error on 0x%"PRIx64"(%d): allowed= =3D%d", + __func__, addr, flag, mapping_value->flags); + goto unlock; + } + entry.translated_addr =3D addr - mapping_key->low + mapping_value->phy= s_addr; + entry.perm =3D flag; + trace_virtio_iommu_translate_out(addr, entry.translated_addr, sid); + +unlock: + qemu_mutex_unlock(&s->mutex); return entry; } =20 --=20 2.20.1