Messages in this thread Patch in this message | | | From | Will Deacon <> | Subject | [PATCH v2 05/18] alpha: io: implement relaxed accessor macros for writes | Date | Thu, 22 May 2014 17:47:17 +0100 |
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write{b,w,l,q}_relaxed are implemented by some architectures in order to permit memory-mapped I/O writes with weaker barrier semantics than the non-relaxed variants.
This patch implements these write macros for Alpha, in the same vein as the relaxed read macros, which are already implemented.
Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com> --- arch/alpha/include/asm/io.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index 5ebab5895edb..f05bdb4b1cb9 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -500,10 +500,14 @@ extern inline void writeq(u64 b, volatile void __iomem *addr) #define outb_p outb #define outw_p outw #define outl_p outl -#define readb_relaxed(addr) __raw_readb(addr) -#define readw_relaxed(addr) __raw_readw(addr) -#define readl_relaxed(addr) __raw_readl(addr) -#define readq_relaxed(addr) __raw_readq(addr) +#define readb_relaxed(addr) __raw_readb(addr) +#define readw_relaxed(addr) __raw_readw(addr) +#define readl_relaxed(addr) __raw_readl(addr) +#define readq_relaxed(addr) __raw_readq(addr) +#define writeb_relaxed(b, addr) __raw_writeb(b, addr) +#define writew_relaxed(b, addr) __raw_writew(b, addr) +#define writel_relaxed(b, addr) __raw_writel(b, addr) +#define writeq_relaxed(b, addr) __raw_writeq(b, addr) #define mmiowb() -- 1.9.2
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