From patchwork Mon Sep 4 08:03:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13373566 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8D54DC71153 for ; Mon, 4 Sep 2023 08:09:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qd4bc-00017y-G7; Mon, 04 Sep 2023 04:06:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qd4bR-00011Q-PJ for qemu-devel@nongnu.org; Mon, 04 Sep 2023 04:06:35 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qd4bD-0006HN-Vq for qemu-devel@nongnu.org; Mon, 04 Sep 2023 04:06:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1693814778; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IAZop55Ny6Gxc5AQo+TBRznDjzisZRxOxhW8y3kjP5o=; b=FH1iXBTbDzp746Mur2ieJBce3mKMgApmM7SVH4XSdjTiYqwSFclrp3e2bk0jFAGoHqGsMj a3ShWHEC4/L59q35hZk5eKT5hlzOC7hbqqN6AUub2G4167sLzdoLQGN1AASUeBWbHMXLi0 UtZuV9v2hs9f84lqoInRxPi/ep10Rfs= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-696-s3V8MV8DNhqsH4pJDynJrA-1; Mon, 04 Sep 2023 04:05:11 -0400 X-MC-Unique: s3V8MV8DNhqsH4pJDynJrA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 99107382C967; Mon, 4 Sep 2023 08:05:10 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id 47B0C40D2962; Mon, 4 Sep 2023 08:05:08 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, alex.williamson@redhat.com, clg@redhat.com, jean-philippe@linaro.org, mst@redhat.com, pbonzini@redhat.com Cc: peter.maydell@linaro.org, peterx@redhat.com, david@redhat.com, philmd@linaro.org Subject: [PATCH 05/13] virtio-iommu: Introduce per IOMMUDevice reserved regions Date: Mon, 4 Sep 2023 10:03:48 +0200 Message-ID: <20230904080451.424731-6-eric.auger@redhat.com> In-Reply-To: <20230904080451.424731-1-eric.auger@redhat.com> References: <20230904080451.424731-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org For the time being the per device reserved regions are just a duplicate of IOMMU wide reserved regions. Subsequent patches will combine those with host reserved regions, if any. Signed-off-by: Eric Auger --- include/hw/virtio/virtio-iommu.h | 1 + hw/virtio/virtio-iommu.c | 42 ++++++++++++++++++++++++++------ 2 files changed, 35 insertions(+), 8 deletions(-) diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h index eea4564782..70b8ace34d 100644 --- a/include/hw/virtio/virtio-iommu.h +++ b/include/hw/virtio/virtio-iommu.h @@ -39,6 +39,7 @@ typedef struct IOMMUDevice { AddressSpace as; MemoryRegion root; /* The root container of the device */ MemoryRegion bypass_mr; /* The alias of shared memory MR */ + GList *resv_regions; } IOMMUDevice; typedef struct IOMMUPciBus { diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 979cdb5648..ea359b586a 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -624,22 +624,48 @@ static int virtio_iommu_unmap(VirtIOIOMMU *s, return ret; } +static int consolidate_resv_regions(IOMMUDevice *sdev) +{ + VirtIOIOMMU *s = sdev->viommu; + int i; + + for (i = 0; i < s->nr_prop_resv_regions; i++) { + ReservedRegion *reg = g_new0(ReservedRegion, 1); + + *reg = s->prop_resv_regions[i]; + sdev->resv_regions = g_list_append(sdev->resv_regions, reg); + } + return 0; +} + static ssize_t virtio_iommu_fill_resv_mem_prop(VirtIOIOMMU *s, uint32_t ep, uint8_t *buf, size_t free) { struct virtio_iommu_probe_resv_mem prop = {}; size_t size = sizeof(prop), length = size - sizeof(prop.head), total; - int i; + IOMMUDevice *sdev; + GList *l; + int ret; - total = size * s->nr_prop_resv_regions; + sdev = container_of(virtio_iommu_mr(s, ep), IOMMUDevice, iommu_mr); + if (!sdev) { + return -EINVAL; + } + ret = consolidate_resv_regions(sdev); + if (ret) { + return ret; + } + + total = size * g_list_length(sdev->resv_regions); if (total > free) { return -ENOSPC; } - for (i = 0; i < s->nr_prop_resv_regions; i++) { - unsigned subtype = s->prop_resv_regions[i].type; - Range *range = &s->prop_resv_regions[i].range; + for (l = sdev->resv_regions; l; l = l->next) { + ReservedRegion *reg = l->data; + unsigned subtype = reg->type; + Range *range = ®->range; assert(subtype == VIRTIO_IOMMU_RESV_MEM_T_RESERVED || subtype == VIRTIO_IOMMU_RESV_MEM_T_MSI); @@ -857,7 +883,7 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemoryRegion *mr, hwaddr addr, bool bypass_allowed; int granule; bool found; - int i; + GList *l; interval.low = addr; interval.high = addr + 1; @@ -895,8 +921,8 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemoryRegion *mr, hwaddr addr, goto unlock; } - for (i = 0; i < s->nr_prop_resv_regions; i++) { - ReservedRegion *reg = &s->prop_resv_regions[i]; + for (l = sdev->resv_regions; l; l = l->next) { + ReservedRegion *reg = l->data; if (range_contains(®->range, addr)) { switch (reg->type) {