summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorJoerg Roedel <jroedel@suse.de>2016-05-09 15:33:17 +0200
committerJoerg Roedel <jroedel@suse.de>2016-05-09 15:33:17 +0200
commit9a51f3fc77f52b0ebdca5797bbbdb8e043037807 (patch)
tree38aa2e340f7d67c033e7bdd501db5082d4fbcbaa /include
parent809eac54cdd62c67afea1e17080e681dfa33dc09 (diff)
parent8801561ce029ef2bf6927c53b834d711830bc8be (diff)
downloadlinux-9a51f3fc77f52b0ebdca5797bbbdb8e043037807.tar.gz
Merge branch 'arm/smmu' into core
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/io.h4
-rw-r--r--include/linux/io-64-nonatomic-hi-lo.h25
-rw-r--r--include/linux/io-64-nonatomic-lo-hi.h25
3 files changed, 52 insertions, 2 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index eed3bbe88c8a..002b81f6f2bc 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -191,7 +191,7 @@ static inline void writeq(u64 value, volatile void __iomem *addr)
#define readl_relaxed readl
#endif
-#ifndef readq_relaxed
+#if defined(readq) && !defined(readq_relaxed)
#define readq_relaxed readq
#endif
@@ -207,7 +207,7 @@ static inline void writeq(u64 value, volatile void __iomem *addr)
#define writel_relaxed writel
#endif
-#ifndef writeq_relaxed
+#if defined(writeq) && !defined(writeq_relaxed)
#define writeq_relaxed writeq
#endif
diff --git a/include/linux/io-64-nonatomic-hi-lo.h b/include/linux/io-64-nonatomic-hi-lo.h
index 11d7e840d913..defcc4644ce3 100644
--- a/include/linux/io-64-nonatomic-hi-lo.h
+++ b/include/linux/io-64-nonatomic-hi-lo.h
@@ -21,6 +21,23 @@ static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr)
writel(val, addr);
}
+static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr)
+{
+ const volatile u32 __iomem *p = addr;
+ u32 low, high;
+
+ high = readl_relaxed(p + 1);
+ low = readl_relaxed(p);
+
+ return low + ((u64)high << 32);
+}
+
+static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr)
+{
+ writel_relaxed(val >> 32, addr + 4);
+ writel_relaxed(val, addr);
+}
+
#ifndef readq
#define readq hi_lo_readq
#endif
@@ -29,4 +46,12 @@ static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr)
#define writeq hi_lo_writeq
#endif
+#ifndef readq_relaxed
+#define readq_relaxed hi_lo_readq_relaxed
+#endif
+
+#ifndef writeq_relaxed
+#define writeq_relaxed hi_lo_writeq_relaxed
+#endif
+
#endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */
diff --git a/include/linux/io-64-nonatomic-lo-hi.h b/include/linux/io-64-nonatomic-lo-hi.h
index 1a4315f97360..084461a4e5ab 100644
--- a/include/linux/io-64-nonatomic-lo-hi.h
+++ b/include/linux/io-64-nonatomic-lo-hi.h
@@ -21,6 +21,23 @@ static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
writel(val >> 32, addr + 4);
}
+static inline __u64 lo_hi_readq_relaxed(const volatile void __iomem *addr)
+{
+ const volatile u32 __iomem *p = addr;
+ u32 low, high;
+
+ low = readl_relaxed(p);
+ high = readl_relaxed(p + 1);
+
+ return low + ((u64)high << 32);
+}
+
+static inline void lo_hi_writeq_relaxed(__u64 val, volatile void __iomem *addr)
+{
+ writel_relaxed(val, addr);
+ writel_relaxed(val >> 32, addr + 4);
+}
+
#ifndef readq
#define readq lo_hi_readq
#endif
@@ -29,4 +46,12 @@ static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
#define writeq lo_hi_writeq
#endif
+#ifndef readq_relaxed
+#define readq_relaxed lo_hi_readq_relaxed
+#endif
+
+#ifndef writeq_relaxed
+#define writeq_relaxed lo_hi_writeq_relaxed
+#endif
+
#endif /* _LINUX_IO_64_NONATOMIC_LO_HI_H_ */