Re: [PATCH] ARM: supplementing IO accessors with 64 bit capability

From: Russell King - ARM Linux
Date: Wed Oct 22 2014 - 12:12:26 EST


On Wed, Oct 22, 2014 at 10:06:23AM -0600, mathieu.poirier@xxxxxxxxxx wrote:
> @@ -306,10 +324,13 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
> __raw_readw(c)); __r; })
> #define readl_relaxed(c) ({ u32 __r = le32_to_cpu((__force __le32) \
> __raw_readl(c)); __r; })
> +#define readq_relaxed(c) ({ u64 __r = le64_to_cpu((__force __le64) \
> + __raw_readq(c)); __r; })
>
> #define writeb_relaxed(v,c) __raw_writeb(v,c)
> #define writew_relaxed(v,c) __raw_writew((__force u16) cpu_to_le16(v),c)
> #define writel_relaxed(v,c) __raw_writel((__force u32) cpu_to_le32(v),c)
> +#define writeq_relaxed(v,c) __raw_writeq((__force u64) cpu_to_le64(v),c)

You should only define these if we have the corresponding __raw_ versions
too.

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