diff options
| author |   Will Deacon <will.deacon@arm.com> | 2013-09-04 11:34:08 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-10-20 18:49:18 +0100 |
| commit | 5da590574cbc39e48d1b71d87b62766c044b9b52 (patch) | |
| tree | 075ee1b4d8173479dec12aeeddc0a5cd3307ac6b /arch/powerpc/include/asm/io.h | |
| parent | parisc: io: implement dummy relaxed accessor macros for writes (diff) | |
| download | linux-dev-5da590574cbc39e48d1b71d87b62766c044b9b52.tar.xz linux-dev-5da590574cbc39e48d1b71d87b62766c044b9b52.zip | |
powerpc: 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 powerpc, in the
same vein as the dummy definitions for the relaxed read accessors.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/powerpc/include/asm/io.h')
| -rw-r--r-- | arch/powerpc/include/asm/io.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 97d3869991ca..9eaf301ac952 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -617,10 +617,14 @@ static inline void name at \ /* * We don't do relaxed operations yet, at least not with this semantic */ -#define readb_relaxed(addr) readb(addr) -#define readw_relaxed(addr) readw(addr) -#define readl_relaxed(addr) readl(addr) -#define readq_relaxed(addr) readq(addr) +#define readb_relaxed(addr) readb(addr) +#define readw_relaxed(addr) readw(addr) +#define readl_relaxed(addr) readl(addr) +#define readq_relaxed(addr) readq(addr) +#define writeb_relaxed(v, addr) writeb(v, addr) +#define writew_relaxed(v, addr) writew(v, addr) +#define writel_relaxed(v, addr) writel(v, addr) +#define writeq_relaxed(v, addr) writeq(v, addr) #ifdef CONFIG_PPC32 #define mmiowb() |