From patchwork Mon Sep 4 08:03:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1829356 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=UQgBpjXP; dkim-atps=neutral Authentication-Results: legolas.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=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RfLpp5lL8z1ygx for ; Mon, 4 Sep 2023 18:07:46 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qd4bE-0000xq-Al; Mon, 04 Sep 2023 04:06:20 -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 1qd4bC-0000vT-AU for qemu-devel@nongnu.org; Mon, 04 Sep 2023 04:06:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qd4b7-0006AB-Fi for qemu-devel@nongnu.org; Mon, 04 Sep 2023 04:06:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1693814772; 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=0fClSLFNTnj1PBBeNErEhvIOOlv5XDQmnbvHzzG3f0E=; b=UQgBpjXPFRF9zAIbIbINQ7HN5CLSYRCXLGvXGV62iw6M0jeUwiYe7sS9/GVpqJH0C6W8Xq zD8QPGeQYnXzZ0BeZUP6RlH41uXEgwDnMRXpR2wn/YWnJnvIDAFcvO+wRzQkbYyBNY8zf1 vbYl+VumzmjpAulGv5fbIu5OH3pTaXE= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-295-CBDaXKdjPeGayDcBfJDI3A-1; Mon, 04 Sep 2023 04:05:02 -0400 X-MC-Unique: CBDaXKdjPeGayDcBfJDI3A-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 01F0D8015AA; Mon, 4 Sep 2023 08:05:02 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id A1592400D277; Mon, 4 Sep 2023 08:04:59 +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 02/13] memory: Introduce memory_region_iommu_set_iova_ranges Date: Mon, 4 Sep 2023 10:03:45 +0200 Message-ID: <20230904080451.424731-3-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=170.10.129.124; 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This helper will allow to convey information about valid IOVA ranges to virtual IOMMUS. Signed-off-by: Eric Auger Reviewed-by: Peter Xu Reviewed-by: David Hildenbrand --- include/exec/memory.h | 26 ++++++++++++++++++++++++++ softmmu/memory.c | 15 +++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 184cb3a01b..f6fb99dd3f 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -519,6 +519,27 @@ struct IOMMUMemoryRegionClass { int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu, uint64_t page_size_mask, Error **errp); + /** + * @iommu_set_iova_ranges: + * + * Propagate information about the usable IOVA ranges for a given IOMMU + * memory region. Used for example to propagate host physical device + * reserved memory region constraints to the virtual IOMMU. + * + * Optional method: if this method is not provided, then the default IOVA + * aperture is used. + * + * @nr_ranges: number of IOVA ranges + * + * @iova_ranges: an array of @nr_ranges usable IOVA ranges + * + * Returns 0 on success, or a negative error. In case of failure, the error + * object must be created. + */ + int (*iommu_set_iova_ranges)(IOMMUMemoryRegion *iommu, + uint32_t nr_ranges, + struct Range *iova_ranges, + Error **errp); }; typedef struct RamDiscardListener RamDiscardListener; @@ -1845,6 +1866,11 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr, uint64_t page_size_mask, Error **errp); +int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu, + uint32_t nr_ranges, + struct Range *iova_ranges, + Error **errp); + /** * memory_region_name: get a memory region's name * diff --git a/softmmu/memory.c b/softmmu/memory.c index 7d9494ce70..07499457aa 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1905,6 +1905,21 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr, return ret; } +int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu_mr, + uint32_t nr_ranges, + struct Range *iova_ranges, + Error **errp) +{ + IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); + int ret = 0; + + if (imrc->iommu_set_iova_ranges) { + ret = imrc->iommu_set_iova_ranges(iommu_mr, nr_ranges, + iova_ranges, errp); + } + return ret; +} + int memory_region_register_iommu_notifier(MemoryRegion *mr, IOMMUNotifier *n, Error **errp) {