diff mbox series

[v4,4/8] HostIOMMUDevice: Store the aliased bus and devfn

Message ID 20240614095402.904691-5-eric.auger@redhat.com
State New
Headers show
Series VIRTIO-IOMMU/VFIO: Fix host iommu geometry handling for hotplugged devices | expand

Commit Message

Eric Auger June 14, 2024, 9:52 a.m. UTC 
Store the aliased bus and devfn in the HostIOMMUDevice.
This will be useful to handle info that are iommu group
specific and not device specific (such as reserved
iova ranges).

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 include/sysemu/host_iommu_device.h | 2 ++
 hw/pci/pci.c                       | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/sysemu/host_iommu_device.h b/include/sysemu/host_iommu_device.h
index 40e0fa13ef..ee6c813c8b 100644
--- a/include/sysemu/host_iommu_device.h
+++ b/include/sysemu/host_iommu_device.h
@@ -35,6 +35,8 @@  struct HostIOMMUDevice {
 
     char *name;
     void *agent; /* pointer to agent device, ie. VFIO or VDPA device */
+    PCIBus *aliased_bus;
+    int aliased_devfn;
     HostIOMMUDeviceCaps caps;
 };
 
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index c8a8aab306..50b86d5790 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2745,11 +2745,15 @@  AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
 bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod,
                                  Error **errp)
 {
-    PCIBus *iommu_bus;
+    PCIBus *iommu_bus, *aliased_bus;
+    int aliased_devfn;
 
     /* set_iommu_device requires device's direct BDF instead of aliased BDF */
-    pci_device_get_iommu_bus_devfn(dev, &iommu_bus, NULL, NULL);
+    pci_device_get_iommu_bus_devfn(dev, &iommu_bus,
+                                   &aliased_bus, &aliased_devfn);
     if (iommu_bus && iommu_bus->iommu_ops->set_iommu_device) {
+        hiod->aliased_bus = aliased_bus;
+        hiod->aliased_devfn = aliased_devfn;
         return iommu_bus->iommu_ops->set_iommu_device(pci_get_bus(dev),
                                                       iommu_bus->iommu_opaque,
                                                       dev->devfn, hiod, errp);