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>
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index e0a03af..5619f85 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -14,6 +14,7 @@
#define DMA_PTE_SNP (1 << 11)
#define CONTEXT_TT_MULTI_LEVEL 0
+#define CONTEXT_TT_DEV_IOTLB 1
#define CONTEXT_TT_PASS_THROUGH 2
struct intel_iommu;
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 40561b2..482dc91 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -124,6 +124,7 @@
#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 */