From 7373a8cc381978cfafa4b0285cdd935682f1b2d2 Mon Sep 17 00:00:00 2001
From: Lu Baolu <baolu.lu@linux.intel.com>
Date: Mon, 10 Dec 2018 09:59:03 +0800
Subject: iommu/vt-d: Setup context and enable RID2PASID support

This patch enables the translation for requests without PASID in
the scalable mode by setting up the root and context entries.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/intel-pasid.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/iommu/intel-pasid.h')

diff --git a/drivers/iommu/intel-pasid.h b/drivers/iommu/intel-pasid.h
index d6f4fead4491..55bb8715329d 100644
--- a/drivers/iommu/intel-pasid.h
+++ b/drivers/iommu/intel-pasid.h
@@ -17,6 +17,7 @@
 #define PASID_PTE_PRESENT		1
 #define PDE_PFN_MASK			PAGE_MASK
 #define PASID_PDE_SHIFT			6
+#define MAX_NR_PASID_BITS		20
 
 /*
  * Domain ID reserved for pasid entries programmed for first-level
-- 
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