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author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2021-10-26 19:20:22 +0100 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2021-11-01 18:49:10 -0400 |
commit | 1b3bf13890fd849b2628ca8c059f8d63c74b9572 (patch) | |
tree | 192599f84d1245eb500fb3cfa09ee46a27087dc5 /hw | |
parent | 867e9c9f4cbc152aee5ed6157257986ecad29096 (diff) | |
download | qemu-1b3bf13890fd849b2628ca8c059f8d63c74b9572.zip qemu-1b3bf13890fd849b2628ca8c059f8d63c74b9572.tar.gz qemu-1b3bf13890fd849b2628ca8c059f8d63c74b9572.tar.bz2 |
hw/i386/pc: Move IOMMU singleton into PCMachineState
We're about to support a third vIOMMU for x86, virtio-iommu which
doesn't inherit X86IOMMUState. Move the IOMMU singleton into
PCMachineState, so it can be shared between all three vIOMMUs.
The x86_iommu_get_default() helper is still needed by KVM and IOAPIC to
fetch the default IRQ-remapping IOMMU. Since virtio-iommu doesn't
support IRQ remapping, this interface doesn't need to change for the
moment. We could later replace X86IOMMUState with an "IRQ remapping
IOMMU" interface if necessary.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-Id: <20211026182024.2642038-4-jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/i386/pc.c | 12 | ||||
-rw-r--r-- | hw/i386/x86-iommu.c | 26 |
2 files changed, 19 insertions, 19 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 86223ac..7b1c4f4 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1330,6 +1330,15 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) { pc_virtio_md_pci_pre_plug(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE)) { + PCMachineState *pcms = PC_MACHINE(hotplug_dev); + + if (pcms->iommu) { + error_setg(errp, "QEMU does not support multiple vIOMMUs " + "for x86 yet."); + return; + } + pcms->iommu = dev; } } @@ -1384,7 +1393,8 @@ static HotplugHandler *pc_get_hotplug_handler(MachineState *machine, if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || object_dynamic_cast(OBJECT(dev), TYPE_CPU) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) || - object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) { + object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI) || + object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE)) { return HOTPLUG_HANDLER(machine); } diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c index dc968c7..01d1132 100644 --- a/hw/i386/x86-iommu.c +++ b/hw/i386/x86-iommu.c @@ -77,25 +77,17 @@ void x86_iommu_irq_to_msi_message(X86IOMMUIrq *irq, MSIMessage *msg_out) msg_out->data = msg.msi_data; } -/* Default X86 IOMMU device */ -static X86IOMMUState *x86_iommu_default = NULL; - -static void x86_iommu_set_default(X86IOMMUState *x86_iommu) +X86IOMMUState *x86_iommu_get_default(void) { - assert(x86_iommu); + MachineState *ms = MACHINE(qdev_get_machine()); + PCMachineState *pcms = + PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE)); - if (x86_iommu_default) { - error_report("QEMU does not support multiple vIOMMUs " - "for x86 yet."); - exit(1); + if (pcms && + object_dynamic_cast(OBJECT(pcms->iommu), TYPE_X86_IOMMU_DEVICE)) { + return X86_IOMMU_DEVICE(pcms->iommu); } - - x86_iommu_default = x86_iommu; -} - -X86IOMMUState *x86_iommu_get_default(void) -{ - return x86_iommu_default; + return NULL; } static void x86_iommu_realize(DeviceState *dev, Error **errp) @@ -131,8 +123,6 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp) if (x86_class->realize) { x86_class->realize(dev, errp); } - - x86_iommu_set_default(X86_IOMMU_DEVICE(dev)); } static Property x86_iommu_properties[] = { |