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bh=EEJC5V3lK/VQAM8iH0Zn+wfUIgAwt0asMzG0ygzjCmQ=; b=Uqv8Mysix2WI9bS7ymL3RddzfBT1T5CG1embfC6P4xnwHSuIIXYijJ1XzUkEM0cigCfMQD BqhEBez4wYpNF2WWCtZyqwAEjM1IDEhHO65cCCqo1CliBZVAJCCXPiCTyg8b/wgyjsTOrc KjbII0Q3ZPNMm0XpmiYOTwHwgofDh9M= X-MC-Unique: ewigfKSKPZWFU_XPLYyxlw-1 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, mst@redhat.com, armbru@redhat.com, pbonzini@redhat.com, jean-philippe@linaro.org, bbhushan2@marvell.com, peterx@redhat.com Subject: [PATCH v5 4/5] virtio-iommu-pci: Add array of Interval properties Date: Wed, 24 Jun 2020 15:26:24 +0200 Message-Id: <20200624132625.27453-5-eric.auger@redhat.com> In-Reply-To: <20200624132625.27453-1-eric.auger@redhat.com> References: <20200624132625.27453-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" The machine may need to pass reserved regions to the virtio-iommu-pci device (such as the MSI window on x86 or the MSI doorbells on ARM). So let's add an array of Interval properties. Note: if some reserved regions are already set by the machine code - which should be the case in general -, the length of the property array is already set and prevents the end-user from modifying them. For example, attempting to use: -device virtio-iommu-pci,\ len-reserved-regions=3D1,reserved-regions[0]=3D0xfee00000:0xfeefffff:1 would result in the following error message: -device virtio-iommu-pci,len-reserved-regions=3D1,len-reserved-regions=3D1, reserved-regions[0]=3D0xfee00000:0xfeefffff:1: array size property len-reserved-regions may not be set more than once Otherwise, for example, adding two reserved regions is achieved using the following options: -device virtio-iommu-pci,addr=3D0xa,len-reserved-regions=3D2,\ reserved-regions[0]=3D0xfee00000:0xfeefffff:1,\ reserved-regions[1]=3D0x1000000:100ffff:1 Signed-off-by: Eric Auger Reviewed-by: Jean-Philippe Brucker --- v3 -> v4: - added examples in the commit message as suggested by Markus - added Jean's R-b --- hw/virtio/virtio-iommu-pci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c index 632533abaf..d0746fa93c 100644 --- a/hw/virtio/virtio-iommu-pci.c +++ b/hw/virtio/virtio-iommu-pci.c @@ -33,6 +33,9 @@ struct VirtIOIOMMUPCI { =20 static Property virtio_iommu_pci_properties[] =3D { DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), + DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI, + vdev.nb_reserved_regions, vdev.reserved_regions, + qdev_prop_reserved_region, ReservedRegion), DEFINE_PROP_END_OF_LIST(), }; =20 --=20 2.20.1