[RFC v1 2/2] uio: Add Kconfig and Makefile support for UIO_PCI_GENERIC_SVA

[Yaxing Guo]

Add config symbol and build infrastructure for the UIO PCI generic
driver with SVA (Shared Virtual Addressing) support.

This introduces:
- A new tristate config option 'UIO_PCI_GENERIC_SVA' in Kconfig,
  dependent on PCI and IOMMU_SVA.
- Build rule in Makefile to compile uio_pci_generic_sva.o when enabled.

Signed-off-by: Yaxing Guo <guoyaxing@xxxxxxxxxx>
---
 drivers/uio/Kconfig  | 5 +++++
 drivers/uio/Makefile | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
index b060dcd7c635..9849e53d1932 100644
--- a/drivers/uio/Kconfig
+++ b/drivers/uio/Kconfig
@@ -164,4 +164,9 @@ config UIO_DFL
 	    opae-sdk/tools/libopaeuio/
 
 	  If you compile this as a module, it will be called uio_dfl.
+
+config UIO_PCI_GENERIC_SVA
+	tristate "Generic driver for PCI Express that supports sva"
+	depends on PCI && IOMMU_SVA
+
 endif
diff --git a/drivers/uio/Makefile b/drivers/uio/Makefile
index 1c5f3b5a95cf..5352e21e918d 100644
--- a/drivers/uio/Makefile
+++ b/drivers/uio/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_UIO_MF624)         += uio_mf624.o
 obj-$(CONFIG_UIO_FSL_ELBC_GPCM)	+= uio_fsl_elbc_gpcm.o
 obj-$(CONFIG_UIO_HV_GENERIC)	+= uio_hv_generic.o
 obj-$(CONFIG_UIO_DFL)	+= uio_dfl.o
+obj-$(CONFIG_UIO_PCI_GENERIC_SVA)  += uio_pci_generic_sva.o
-- 
2.34.1