linux-kernel - [PATCH 4.4 26/91] iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu

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Date:   Fri, 10 Mar 2017 10:08:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, iommu@...ts.linux-foundation.org,
        CQ Tang <cq.tang@...el.com>, Ashok Raj <ashok.raj@...el.com>,
        Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 4.4 26/91] iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: CQ Tang <cq.tang@...el.com>

commit aaa59306b0b7e0ca4ba92cc04c5db101cbb1c096 upstream.

Some of the macros are incorrect with wrong bit-shifts resulting in picking
the incorrect invalidation granularity. Incorrect Source-ID in extended
devtlb invalidation caused device side errors.

To: Joerg Roedel <joro@...tes.org>
To: David Woodhouse <dwmw2@...radead.org>
Cc: iommu@...ts.linux-foundation.org
Cc: linux-kernel@...r.kernel.org
Cc: CQ Tang <cq.tang@...el.com>
Cc: Ashok Raj <ashok.raj@...el.com>

Fixes: 2f26e0a9 ("iommu/vt-d: Add basic SVM PASID support")
Signed-off-by: CQ Tang <cq.tang@...el.com>
Signed-off-by: Ashok Raj <ashok.raj@...el.com>
Tested-by: CQ Tang <cq.tang@...el.com>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 include/linux/intel-iommu.h |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -153,8 +153,8 @@ static inline void dmar_writeq(void __io
 #define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60)
 #define DMA_TLB_DSI_FLUSH (((u64)2) << 60)
 #define DMA_TLB_PSI_FLUSH (((u64)3) << 60)
-#define DMA_TLB_IIRG(type) ((type >> 60) & 7)
-#define DMA_TLB_IAIG(val) (((val) >> 57) & 7)
+#define DMA_TLB_IIRG(type) ((type >> 60) & 3)
+#define DMA_TLB_IAIG(val) (((val) >> 57) & 3)
 #define DMA_TLB_READ_DRAIN (((u64)1) << 49)
 #define DMA_TLB_WRITE_DRAIN (((u64)1) << 48)
 #define DMA_TLB_DID(id)	(((u64)((id) & 0xffff)) << 32)
@@ -164,9 +164,9 @@ static inline void dmar_writeq(void __io
 
 /* INVALID_DESC */
 #define DMA_CCMD_INVL_GRANU_OFFSET  61
-#define DMA_ID_TLB_GLOBAL_FLUSH	(((u64)1) << 3)
-#define DMA_ID_TLB_DSI_FLUSH	(((u64)2) << 3)
-#define DMA_ID_TLB_PSI_FLUSH	(((u64)3) << 3)
+#define DMA_ID_TLB_GLOBAL_FLUSH	(((u64)1) << 4)
+#define DMA_ID_TLB_DSI_FLUSH	(((u64)2) << 4)
+#define DMA_ID_TLB_PSI_FLUSH	(((u64)3) << 4)
 #define DMA_ID_TLB_READ_DRAIN	(((u64)1) << 7)
 #define DMA_ID_TLB_WRITE_DRAIN	(((u64)1) << 6)
 #define DMA_ID_TLB_DID(id)	(((u64)((id & 0xffff) << 16)))
@@ -316,8 +316,8 @@ enum {
 #define QI_DEV_EIOTLB_SIZE	(((u64)1) << 11)
 #define QI_DEV_EIOTLB_GLOB(g)	((u64)g)
 #define QI_DEV_EIOTLB_PASID(p)	(((u64)p) << 32)
-#define QI_DEV_EIOTLB_SID(sid)	((u64)((sid) & 0xffff) << 32)
-#define QI_DEV_EIOTLB_QDEP(qd)	(((qd) & 0x1f) << 16)
+#define QI_DEV_EIOTLB_SID(sid)	((u64)((sid) & 0xffff) << 16)
+#define QI_DEV_EIOTLB_QDEP(qd)	((u64)((qd) & 0x1f) << 4)
 #define QI_DEV_EIOTLB_MAX_INVS	32
 
 #define QI_PGRP_IDX(idx)	(((u64)(idx)) << 55)