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authorDong Jia Shi <bjsdjshi@linux.vnet.ibm.com>2017-03-17 04:17:31 +0100
committerCornelia Huck <cornelia.huck@de.ibm.com>2017-03-31 12:55:04 +0200
commit63f1934d562de7cf3124de0ef617dcd3be98b279 (patch)
treed3613dee9a8c23ab9db3770aa192b3fbe6a8a458 /drivers/iommu
parentaec390b937dcaf11c01483b8c348a2b004119aa7 (diff)
downloadlinux-63f1934d562de7cf3124de0ef617dcd3be98b279.tar.bz2
vfio: ccw: basic implementation for vfio_ccw driver
To make vfio support subchannel devices, we need a css driver for the vfio subchannels. This patch adds a basic vfio-ccw subchannel driver for this purpose. To enable VFIO for vfio-ccw, enable S390_CCW_IOMMU config option and configure VFIO as required. Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-5-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 37e204f3d9be..6ee3a25ae731 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -327,6 +327,14 @@ config S390_IOMMU
help
Support for the IOMMU API for s390 PCI devices.
+config S390_CCW_IOMMU
+ bool "S390 CCW IOMMU Support"
+ depends on S390 && CCW
+ select IOMMU_API
+ help
+ Enables bits of IOMMU API required by VFIO. The iommu_ops
+ is not implemented as it is not necessary for VFIO.
+
config MTK_IOMMU
bool "MTK IOMMU Support"
depends on ARM || ARM64