| Message ID | 1400777250-17335-6-git-send-email-will.deacon@arm.com |
|---|---|
| State | Superseded |
| Headers | show |
On 05/22/2014 09:47 AM, Will Deacon wrote: > 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(-) Acked-by: Richard Henderson <rth@twiddle.net> r~ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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()
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(-)