VT-d: support the device IOTLB

Enable the device IOTLB (i.e. ATS) for both the bare metal and KVM
environments.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 40561b224a17..482dc91fd53a 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -124,6 +124,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
 #define ecap_pass_through(e)    ((e >> 6) & 0x1)
 #define ecap_eim_support(e)     ((e >> 4) & 0x1)
 #define ecap_ir_support(e)      ((e >> 3) & 0x1)
+#define ecap_dev_iotlb_support(e)       (((e) >> 2) & 0x1)
 #define ecap_max_handle_mask(e) ((e >> 20) & 0xf)
 #define ecap_sc_support(e)      ((e >> 7) & 0x1) /* Snooping Control */