From nobody Tue Nov 4 11:01:34 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 150580759511690.32097223797257; Tue, 19 Sep 2017 00:53:15 -0700 (PDT) Received: from localhost ([::1]:40614 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1duDLG-0003du-CG for importer@patchew.org; Tue, 19 Sep 2017 03:53:14 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47846) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1duDHD-0000Ya-8P for qemu-devel@nongnu.org; Tue, 19 Sep 2017 03:49:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1duDH9-0001Di-2s for qemu-devel@nongnu.org; Tue, 19 Sep 2017 03:49:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53166) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1duDH6-0001CS-IL; Tue, 19 Sep 2017 03:48:56 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6F36C7EA90; Tue, 19 Sep 2017 07:48:55 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-197.ams2.redhat.com [10.36.116.197]) by smtp.corp.redhat.com (Postfix) with ESMTP id E58496134B; Tue, 19 Sep 2017 07:48:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 6F36C7EA90 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=eric.auger@redhat.com From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, peter.maydell@linaro.org, alex.williamson@redhat.com, mst@redhat.com, qemu-arm@nongnu.org, qemu-devel@nongnu.org, jean-philippe.brucker@arm.com Date: Tue, 19 Sep 2017 09:46:41 +0200 Message-Id: <1505807208-9063-10-git-send-email-eric.auger@redhat.com> In-Reply-To: <1505807208-9063-1-git-send-email-eric.auger@redhat.com> References: <1505807208-9063-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Tue, 19 Sep 2017 07:48:55 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC v4 09/16] virtio-iommu: Implement translate 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, marc.zyngier@arm.com, tn@semihalf.com, will.deacon@arm.com, drjones@redhat.com, peterx@redhat.com, linuc.decode@gmail.com, bharat.bhushan@nxp.com, christoffer.dall@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: 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 translate callback Signed-off-by: Eric Auger --- hw/virtio/trace-events | 1 + hw/virtio/virtio-iommu.c | 39 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 38 insertions(+), 2 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index da298c1..9010fbd 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -45,3 +45,4 @@ virtio_iommu_put_as(uint32_t asid) "Free asid=3D%d" virtio_iommu_unmap_left_interval(uint64_t low, uint64_t high, uint64_t nex= t_low, uint64_t next_high) "Unmap left [0x%"PRIx64",0x%"PRIx64"], new inter= val=3D[0x%"PRIx64",0x%"PRIx64"]" virtio_iommu_unmap_right_interval(uint64_t low, uint64_t high, uint64_t ne= xt_low, uint64_t next_high) "Unmap right [0x%"PRIx64",0x%"PRIx64"], new int= erval=3D[0x%"PRIx64",0x%"PRIx64"]" virtio_iommu_unmap_inc_interval(uint64_t low, uint64_t high) "Unmap inc [0= x%"PRIx64",0x%"PRIx64"]" +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 6f1a7d1..db46a91 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -496,19 +496,54 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemo= ryRegion *mr, hwaddr addr, IOMMUAccessFlags flag) { IOMMUDevice *sdev =3D container_of(mr, IOMMUDevice, iommu_mr); + VirtIOIOMMU *s =3D sdev->viommu; uint32_t sid; + viommu_dev *dev; + viommu_mapping *mapping; + viommu_interval interval; + + 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, - .perm =3D IOMMU_NONE, + .addr_mask =3D (1 << ctz32(s->config.page_size_mask)) - 1, + .perm =3D flag, }; =20 sid =3D virtio_iommu_get_sid(sdev); =20 trace_virtio_iommu_translate(mr->parent_obj.name, sid, addr, flag); + qemu_mutex_lock(&s->mutex); + + dev =3D g_tree_lookup(s->devices, GUINT_TO_POINTER(sid)); + if (!dev) { + /* device cannot be attached to another as */ + printf("%s sid=3D%d is not known!!\n", __func__, sid); + goto unlock; + } + + mapping =3D g_tree_lookup(dev->as->mappings, (gpointer)(&interval)); + if (!mapping) { + printf("%s no mapping for 0x%"PRIx64" for sid=3D%d\n", __func__, + addr, sid); + goto unlock; + } + + if (((flag & IOMMU_RO) && !(mapping->flags & VIRTIO_IOMMU_MAP_F_READ))= || + ((flag & IOMMU_WO) && !(mapping->flags & VIRTIO_IOMMU_MAP_F_WRITE)= )) { + error_report("Permission error on 0x%"PRIx64"(%d): allowed=3D%d", + addr, flag, mapping->flags); + entry.perm =3D IOMMU_NONE; + goto unlock; + } + entry.translated_addr =3D addr - mapping->virt_addr + mapping->phys_ad= dr, + trace_virtio_iommu_translate_out(addr, entry.translated_addr, sid); + +unlock: + qemu_mutex_unlock(&s->mutex); return entry; } =20 --=20 2.5.5