From c2c0f1cde0ef56ba5d6f553db73f51e753d7550a Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Wed, 19 Dec 2018 19:52:31 +1100 Subject: 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 Acked-by: Alex Williamson Signed-off-by: Michael Ellerman --- drivers/vfio/pci/vfio_pci.c | 6 ++++++ drivers/vfio/pci/vfio_pci_private.h | 3 +++ 2 files changed, 9 insertions(+) (limited to 'drivers/vfio') 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 { -- cgit