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bh=yR9gpUI9j7JmuCOH74Zh0p03m13fPVsW5VntZmtW9HU=; b=grcZb0xbQ3Um7Pc2LeSUTzEGqebNZUdi4O7bVRTUK8RPldeR4oHwPyvmT0Dd6UgptFDUlX 6iabUIt9he9aMtka8VL1MdH75QWzakbiysSDepFDGqEAjV4Hx3AuS9v2UYlVDsMIRfagsb QgtEGB1Fx9GQPotBy6Yawp0g1ZsQpYM= X-MC-Unique: 7T5rOhsQMNuZ557nSNFi9g-1 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, jean-philippe@linaro.org, alex.williamson@redhat.com, peter.maydell@linaro.org, zhenzhong.duan@intel.com, yanghliu@redhat.com Cc: mst@redhat.com, clg@redhat.com, jasowang@redhat.com Subject: [PATCH v2 1/3] virtio-iommu: Add an option to define the input range width Date: Thu, 1 Feb 2024 17:32:22 +0100 Message-ID: <20240201163324.564525-2-eric.auger@redhat.com> In-Reply-To: <20240201163324.564525-1-eric.auger@redhat.com> References: <20240201163324.564525-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 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=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.292, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: 1706805255671100005 Content-Type: text/plain; charset="utf-8" aw-bits is a new option that allows to set the bit width of the input address range. This value will be used as a default for the device config input_range.end. By default it is set to 64 bits which is the current value. Signed-off-by: Eric Auger Reviewed-by: C=C3=A9dric Le Goater Reviewed-by: Zhenzhong Duan --- v1 -> v2: - Check the aw-bits value is within [32,64] --- include/hw/virtio/virtio-iommu.h | 1 + hw/virtio/virtio-iommu.c | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-io= mmu.h index 781ebaea8f..5fbe4677c2 100644 --- a/include/hw/virtio/virtio-iommu.h +++ b/include/hw/virtio/virtio-iommu.h @@ -66,6 +66,7 @@ struct VirtIOIOMMU { bool boot_bypass; Notifier machine_done; bool granule_frozen; + uint8_t aw_bits; }; =20 #endif diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index ec2ba11d1d..7870bdbeee 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -1314,7 +1314,11 @@ static void virtio_iommu_device_realize(DeviceState = *dev, Error **errp) */ s->config.bypass =3D s->boot_bypass; s->config.page_size_mask =3D qemu_real_host_page_mask(); - s->config.input_range.end =3D UINT64_MAX; + if (s->aw_bits < 32 || s->aw_bits > 64) { + error_setg(errp, "aw-bits must be within [32,64]"); + } + s->config.input_range.end =3D + s->aw_bits =3D=3D 64 ? UINT64_MAX : BIT_ULL(s->aw_bits) - 1; s->config.domain_range.end =3D UINT32_MAX; s->config.probe_size =3D VIOMMU_PROBE_SIZE; =20 @@ -1525,6 +1529,7 @@ static Property virtio_iommu_properties[] =3D { DEFINE_PROP_LINK("primary-bus", VirtIOIOMMU, primary_bus, TYPE_PCI_BUS, PCIBus *), DEFINE_PROP_BOOL("boot-bypass", VirtIOIOMMU, boot_bypass, true), + DEFINE_PROP_UINT8("aw-bits", VirtIOIOMMU, aw_bits, 64), DEFINE_PROP_END_OF_LIST(), }; =20 --=20 2.41.0