[PATCH 04/10] staging: slicoss: slic.h: add a macro IOMEM_GET_FIELD64 to fix sparse warnings

From: Peng Sun
Date: Tue Sep 13 2016 - 23:00:32 EST


Signed-off-by: Peng Sun <sironhide0null@xxxxxxxxx>
---
drivers/staging/slicoss/slic.h | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)

diff --git a/drivers/staging/slicoss/slic.h b/drivers/staging/slicoss/slic.h
index 4c22863..b9595c4 100644
--- a/drivers/staging/slicoss/slic.h
+++ b/drivers/staging/slicoss/slic.h
@@ -560,6 +560,31 @@ static inline void slic_flush_write(struct adapter *adapter)
iowrite32(value, _base); \
})

+#ifdef CONFIG_64BIT
+#define IOMEM_GET_FIELD64(base, member) \
+({ \
+ char __iomem *_base = (char __iomem *)base; \
+ _base += offsetof(typeof(*base), member); \
+ readq(_base); \
+})
+#else
+#define IOMEM_GET_FIELD64(base, member) \
+({ \
+ char __iomem *_base = (char __iomem *)base; \
+ u64 val; \
+ _base += offsetof(typeof(*base), member); \
+ val = ((u64)ioread8(_base + 7)) << 56; \
+ val += ((u64)ioread8(_base + 6)) << 48; \
+ val += ((u64)ioread8(_base + 5)) << 40; \
+ val += ((u64)ioread8(_base + 4)) << 32; \
+ val += ((u64)ioread8(_base + 3)) << 24; \
+ val += ((u64)ioread8(_base + 2)) << 16; \
+ val += ((u64)ioread8(_base + 1)) << 8; \
+ val += ioread8(_base); \
+ le64_to_cpu(val); \
+})
+#endif
+
#define UPDATE_STATS(largestat, newstat, oldstat) \
{ \
if ((newstat) < (oldstat)) \
--
2.7.4