Signed-off-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>
---
include/linux/intel-iommu.h | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 6240063..08802b9 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -59,14 +59,11 @@
#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */
#define OFFSET_STRIDE (9)
-/*
-#define dmar_readl(dmar, reg) readl(dmar + reg)
-#define dmar_readq(dmar, reg) ({ \
- u32 lo, hi; \
- lo = readl(dmar + reg); \
- hi = readl(dmar + reg + 4); \
- (((u64) hi) << 32) + lo; })
-*/
+
+#ifdef CONFIG_64BIT
+#define dmar_readq(a) readq(a)
+#define dmar_writeq(a,v) writeq(v,a)
+#else
static inline u64 dmar_readq(void __iomem *addr)
{
u32 lo, hi;
@@ -80,6 +77,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
writel((u32)val, addr);
writel((u32)(val >> 32), addr + 4);
}
+#endif
#define DMAR_VER_MAJOR(v) (((v) & 0xf0) >> 4)
#define DMAR_VER_MINOR(v) ((v) & 0x0f)
--
2.4.3
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@xxxxxxxxx Intel Corporation
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