PCI: Move ATS implementation into own file

ATS does not depend on IOV support, so move the code into
its own file. This file will also include support for the
PRI and PASID capabilities later.
Also give ATS its own Kconfig variable to allow selecting it
without IOV support.

Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 0fa466a91bf..1d8ce839586 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -71,9 +71,13 @@ config HT_IRQ
 
            If unsure say Y.
 
+config PCI_ATS
+        bool
+
 config PCI_IOV
         bool "PCI IOV support"
         depends on PCI
+        select PCI_ATS
         help
           I/O Virtualization is a PCI feature supported by some devices
           which allows them to create virtual devices which share their