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authorAlexey Kardashevskiy <aik@ozlabs.ru>2018-12-19 11:52:31 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2018-12-21 08:20:47 +0300
commitc2c0f1cde0ef56ba5d6f553db73f51e753d7550a (patch)
tree975d29fb75d537175d8e110a6616715642529ebc /drivers/vfio/pci
parenta15b1883fee11e07e5db7f003a863cc419647e79 (diff)
downloadlinux-c2c0f1cde0ef56ba5d6f553db73f51e753d7550a.tar.xz
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>
Diffstat (limited to 'drivers/vfio/pci')
-rw-r--r--drivers/vfio/pci/vfio_pci.c6
-rw-r--r--drivers/vfio/pci/vfio_pci_private.h3
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 9a86470f4ed9..0c94204e21f5 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -750,6 +750,12 @@ static long vfio_pci_ioctl(void *device_data,
if (ret)
return ret;
+ if (vdev->region[i].ops->add_capability) {
+ ret = vdev->region[i].ops->add_capability(vdev,
+ &vdev->region[i], &caps);
+ if (ret)
+ return ret;
+ }
}
}
diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h
index 86aab05d3d46..93c1738dae11 100644
--- a/drivers/vfio/pci/vfio_pci_private.h
+++ b/drivers/vfio/pci/vfio_pci_private.h
@@ -62,6 +62,9 @@ struct vfio_pci_regops {
int (*mmap)(struct vfio_pci_device *vdev,
struct vfio_pci_region *region,
struct vm_area_struct *vma);
+ int (*add_capability)(struct vfio_pci_device *vdev,
+ struct vfio_pci_region *region,
+ struct vfio_info_cap *caps);
};
struct vfio_pci_region {