From 8077b8e549cf39d9501fe5b66342ae47abb65058 Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Fri, 3 Jul 2020 16:59:42 +0100 Subject: [PATCH] virtio-iommu-pci: Add array of Interval properties 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=1,reserved-regions[0]=0xfee00000:0xfeefffff:1 would result in the following error message: qemu-system-aarch64: -device virtio-iommu-pci,addr=0xa, len-reserved-regions=1,reserved-regions[0]=0xfee00000:0xfeefffff: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=0xa,len-reserved-regions=2,\ reserved-regions[0]=0xfee00000:0xfeefffff:1,\ reserved-regions[1]=0x1000000:100ffff:1 Signed-off-by: Eric Auger Reviewed-by: Michael S. Tsirkin Reviewed-by: Jean-Philippe Brucker Reviewed-by: Peter Xu Message-id: 20200629070404.10969-5-eric.auger@redhat.com Signed-off-by: Peter Maydell --- hw/virtio/virtio-iommu-pci.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c index 4588361d6b..592abc9279 100644 --- a/hw/virtio/virtio-iommu-pci.c +++ b/hw/virtio/virtio-iommu-pci.c @@ -33,6 +33,9 @@ struct VirtIOIOMMUPCI { static Property virtio_iommu_pci_properties[] = { 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(), }; @@ -40,6 +43,7 @@ static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) { VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev); DeviceState *vdev = DEVICE(&dev->vdev); + VirtIOIOMMU *s = VIRTIO_IOMMU(vdev); if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) { MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); @@ -54,6 +58,13 @@ static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) "-no-acpi\n"); return; } + for (int i = 0; i < s->nb_reserved_regions; i++) { + if (s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_RESERVED && + s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_MSI) { + error_setg(errp, "reserved region %d has an invalid type", i); + error_append_hint(errp, "Valid values are 0 and 1\n"); + } + } object_property_set_link(OBJECT(dev), OBJECT(pci_get_bus(&vpci_dev->pci_dev)), "primary-bus", &error_abort);