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authorJason Gunthorpe <jgg@nvidia.com>2022-11-29 23:31:51 +0300
committerJason Gunthorpe <jgg@nvidia.com>2022-12-02 18:52:03 +0300
commita4d1f91db5021c57e14721ac090616c90386ac70 (patch)
tree9c589738a6d193c2ddabe40b6b93412c0932e5c2 /drivers/vfio/platform/vfio_amba.c
parent2a3dab19a0a6c1823645764188776f271de1b3cf (diff)
downloadlinux-a4d1f91db5021c57e14721ac090616c90386ac70.tar.xz
vfio-iommufd: Support iommufd for physical VFIO devices
This creates the iommufd_device for the physical VFIO drivers. These are all the drivers that are calling vfio_register_group_dev() and expect the type1 code to setup a real iommu_domain against their parent struct device. The design gives the driver a choice in how it gets connected to iommufd by providing bind_iommufd/unbind_iommufd/attach_ioas callbacks to implement as required. The core code provides three default callbacks for physical mode using a real iommu_domain. This is suitable for drivers using vfio_register_group_dev() Link: https://lore.kernel.org/r/6-v4-42cd2eb0e3eb+335a-vfio_iommufd_jgg@nvidia.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Tested-by: Alex Williamson <alex.williamson@redhat.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Tested-by: Yi Liu <yi.l.liu@intel.com> Tested-by: Lixiao Yang <lixiao.yang@intel.com> Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> Tested-by: Yu He <yu.he@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/vfio/platform/vfio_amba.c')
-rw-r--r--drivers/vfio/platform/vfio_amba.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c
index eaea63e5294c..5a046098d0bd 100644
--- a/drivers/vfio/platform/vfio_amba.c
+++ b/drivers/vfio/platform/vfio_amba.c
@@ -117,6 +117,9 @@ static const struct vfio_device_ops vfio_amba_ops = {
.read = vfio_platform_read,
.write = vfio_platform_write,
.mmap = vfio_platform_mmap,
+ .bind_iommufd = vfio_iommufd_physical_bind,
+ .unbind_iommufd = vfio_iommufd_physical_unbind,
+ .attach_ioas = vfio_iommufd_physical_attach_ioas,
};
static const struct amba_id pl330_ids[] = {