From patchwork Sat Jan 25 17:19:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1229249 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=AHwr8cgy; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 484jVc46cnz9sPW for ; Sun, 26 Jan 2020 04:22:00 +1100 (AEDT) Received: from localhost ([::1]:55704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ivP8A-0008Lu-HY for incoming@patchwork.ozlabs.org; Sat, 25 Jan 2020 12:21:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:37917) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ivP7L-0007vz-5Q for qemu-devel@nongnu.org; Sat, 25 Jan 2020 12:21:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ivP7I-0004v0-2q for qemu-devel@nongnu.org; Sat, 25 Jan 2020 12:21:06 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:36724 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ivP7H-0004uZ-W3 for qemu-devel@nongnu.org; Sat, 25 Jan 2020 12:21:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579972863; 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=pNgLxLk2625oZeDAzOkowJF+BXrSL1Vo5ZqvHzz8lgE=; b=AHwr8cgydRHJNDg1Yo6YsaaR7aXHRkqtPHubrY3A435dc6rEFM5TvaLIiGJuC0tlfeJF+T yr80UmHUGsRWrC8vMSTPj69Q+OvSxy+5LYA7PSolOUtaHSiYyDf6jqcZBXCh8MMqCR6J2P hgG7aHrEA2amDvxQbuHYEvcsDJw7nZs= 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-157-CmFQjkZrN8G9KLuyc-Sawg-1; Sat, 25 Jan 2020 12:21:02 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D328713E9; Sat, 25 Jan 2020 17:21:00 +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 506E886E19; Sat, 25 Jan 2020 17:20:54 +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 v13 05/10] virtio-iommu: Implement translate Date: Sat, 25 Jan 2020 18:19:50 +0100 Message-Id: <20200125171955.12825-6-eric.auger@redhat.com> In-Reply-To: <20200125171955.12825-1-eric.auger@redhat.com> References: <20200125171955.12825-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: CmFQjkZrN8G9KLuyc-Sawg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 207.211.31.120 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch implements the translate callback Signed-off-by: Eric Auger Reviewed-by: Jean-Philippe Brucker --- 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=%d" virtio_iommu_put_endpoint(uint32_t ep_id) "Free endpoint=%d" virtio_iommu_get_domain(uint32_t domain_id) "Alloc domain=%d" virtio_iommu_put_domain(uint32_t domain_id) "Free domain=%d" +virtio_iommu_translate_out(uint64_t virt_addr, uint64_t phys_addr, uint32_t sid) "0x%"PRIx64" -> 0x%"PRIx64 " for sid=%d" diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index e1e0c69473..cc0715284f 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -477,19 +477,77 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemoryRegion *mr, hwaddr addr, int iommu_idx) { IOMMUDevice *sdev = container_of(mr, IOMMUDevice, iommu_mr); + VirtIOIOMMUInterval interval, *mapping_key; + VirtIOIOMMUMapping *mapping_value; + VirtIOIOMMU *s = sdev->viommu; + VirtIOIOMMUEndpoint *ep; + bool bypass_allowed; uint32_t sid; + bool found; + + interval.low = addr; + interval.high = addr + 1; IOMMUTLBEntry entry = { .target_as = &address_space_memory, .iova = addr, .translated_addr = addr, - .addr_mask = ~(hwaddr)0, + .addr_mask = (1 << ctz32(s->config.page_size_mask)) - 1, .perm = IOMMU_NONE, }; + bypass_allowed = virtio_vdev_has_feature(&s->parent_obj, + VIRTIO_IOMMU_F_BYPASS); + sid = virtio_iommu_get_bdf(sdev); trace_virtio_iommu_translate(mr->parent_obj.name, sid, addr, flag); + qemu_mutex_lock(&s->mutex); + + ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(sid)); + if (!ep) { + if (!bypass_allowed) { + error_report_once("%s sid=%d is not known!!", __func__, sid); + } else { + entry.perm = flag; + } + goto unlock; + } + + if (!ep->domain) { + if (!bypass_allowed) { + error_report_once("%s %02x:%02x.%01x not attached to any domain", + __func__, PCI_BUS_NUM(sid), + PCI_SLOT(sid), PCI_FUNC(sid)); + } else { + entry.perm = flag; + } + goto unlock; + } + + found = g_tree_lookup_extended(ep->domain->mappings, (gpointer)(&interval), + (void **)&mapping_key, + (void **)&mapping_value); + if (!found) { + error_report_once("%s no mapping for 0x%"PRIx64" for sid=%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=%d", + __func__, addr, flag, mapping_value->flags); + goto unlock; + } + entry.translated_addr = addr - mapping_key->low + mapping_value->phys_addr; + entry.perm = flag; + trace_virtio_iommu_translate_out(addr, entry.translated_addr, sid); + +unlock: + qemu_mutex_unlock(&s->mutex); return entry; }