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vfio_pci: Allow regions to add own capabilities
VFIO regions already support region capabilities with a limited set of fields. However the subdriver might have to report to the userspace additional bits. This adds an add_capability() hook to vfio_pci_regops. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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2 changed files with 9 additions and 0 deletions
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@ -750,6 +750,12 @@ static long vfio_pci_ioctl(void *device_data,
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if (ret)
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if (ret)
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return ret;
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return ret;
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if (vdev->region[i].ops->add_capability) {
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ret = vdev->region[i].ops->add_capability(vdev,
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&vdev->region[i], &caps);
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if (ret)
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return ret;
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}
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}
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}
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}
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}
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@ -62,6 +62,9 @@ struct vfio_pci_regops {
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int (*mmap)(struct vfio_pci_device *vdev,
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int (*mmap)(struct vfio_pci_device *vdev,
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struct vfio_pci_region *region,
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struct vfio_pci_region *region,
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struct vm_area_struct *vma);
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struct vm_area_struct *vma);
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int (*add_capability)(struct vfio_pci_device *vdev,
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struct vfio_pci_region *region,
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struct vfio_info_cap *caps);
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};
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};
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struct vfio_pci_region {
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struct vfio_pci_region {
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