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| author | Will Deacon <will.deacon@arm.com> | 2013-09-03 20:10:11 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-10-20 19:49:17 +0200 |
| commit | f6b3b7a9fa44ffa01f9c4f5ed13a9c48921e1ff2 (patch) | |
| tree | 427de36817a19ed210a3c9ee28fdc5b8ed8388e6 | |
| parent | cris: io: implement dummy relaxed accessor macros for writes (diff) | |
| download | linux-f6b3b7a9fa44ffa01f9c4f5ed13a9c48921e1ff2.tar.xz linux-f6b3b7a9fa44ffa01f9c4f5ed13a9c48921e1ff2.zip | |
ia64: io: implement dummy relaxed accessor macros for writes
write{b,w,l,q}_relaxed are implemented by some architectures in order to
permit memory-mapped I/O accesses with weaker barrier semantics than the
non-relaxed variants.
This patch adds dummy macros for the write accessors to ia64, which may
be able to be optimised in a similar manner to the relaxed read
accessors at a later date.
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
| -rw-r--r-- | arch/ia64/include/asm/io.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h index bee0acd52f7e..80a7e34be009 100644 --- a/arch/ia64/include/asm/io.h +++ b/arch/ia64/include/asm/io.h @@ -393,6 +393,10 @@ __writeq (unsigned long val, volatile void __iomem *addr) #define writew(v,a) __writew((v), (a)) #define writel(v,a) __writel((v), (a)) #define writeq(v,a) __writeq((v), (a)) +#define writeb_relaxed(v,a) __writeb((v), (a)) +#define writew_relaxed(v,a) __writew((v), (a)) +#define writel_relaxed(v,a) __writel((v), (a)) +#define writeq_relaxed(v,a) __writeq((v), (a)) #define __raw_writeb writeb #define __raw_writew writew #define __raw_writel writel |