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pci: Add a pci-level initialization function for IOMMU notifiers

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This is meant to be used by ATS-capable devices.

Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250520071823.764266-10-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
CLEMENT MATHIEU--DRIF 2025-05-20 07:19:01 +00:00 • committed by Michael S. Tsirkin
parent 7e94e45296
commit a849ff5d6f
2 changed files with 50 additions and 0 deletions
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17
hw/pci/pci.c
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@ -2939,6 +2939,23 @@ AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
return &address_space_memory;
}
int pci_iommu_init_iotlb_notifier(PCIDevice *dev, IOMMUNotifier *n,
IOMMUNotify fn, void *opaque)
{
PCIBus *bus;
PCIBus *iommu_bus;
int devfn;
pci_device_get_iommu_bus_devfn(dev, &bus, &iommu_bus, &devfn);
if (iommu_bus && iommu_bus->iommu_ops->init_iotlb_notifier) {
iommu_bus->iommu_ops->init_iotlb_notifier(bus, iommu_bus->iommu_opaque,
devfn, n, fn, opaque);
return 0;
}
return -ENODEV;
}
bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod,
Error **errp)
{