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bh=0fClSLFNTnj1PBBeNErEhvIOOlv5XDQmnbvHzzG3f0E=; b=UQgBpjXPFRF9zAIbIbINQ7HN5CLSYRCXLGvXGV62iw6M0jeUwiYe7sS9/GVpqJH0C6W8Xq zD8QPGeQYnXzZ0BeZUP6RlH41uXEgwDnMRXpR2wn/YWnJnvIDAFcvO+wRzQkbYyBNY8zf1 vbYl+VumzmjpAulGv5fbIu5OH3pTaXE= X-MC-Unique: CBDaXKdjPeGayDcBfJDI3A-1 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 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1693814866553100003 Content-Type: text/plain; charset="utf-8" This helper will allow to convey information about valid IOVA ranges to virtual IOMMUS. Signed-off-by: Eric Auger Reviewed-by: David Hildenbrand Reviewed-by: Peter Xu --- 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 I= OVA + * 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); }; =20 typedef struct RamDiscardListener RamDiscardListener; @@ -1845,6 +1866,11 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemo= ryRegion *iommu_mr, uint64_t page_size_mask, Error **errp); =20 +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(IOMMUMemo= ryRegion *iommu_mr, return ret; } =20 +int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu_mr, + uint32_t nr_ranges, + struct Range *iova_ranges, + Error **errp) +{ + IOMMUMemoryRegionClass *imrc =3D IOMMU_MEMORY_REGION_GET_CLASS(iommu_m= r); + int ret =3D 0; + + if (imrc->iommu_set_iova_ranges) { + ret =3D 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) { --=20 2.41.0