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

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Date:	Wed, 22 Oct 2014 17:11:55 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	mathieu.poirier@...aro.org
Cc:	catalin.marinas@....com, stefano.stabellini@...citrix.com,
	ezequiel.garcia@...e-electrons.com, Liviu.Dudau@....com,
	thomas.petazzoni@...e-electrons.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: supplementing IO accessors with 64 bit capability

On Wed, Oct 22, 2014 at 10:06:23AM -0600, mathieu.poirier@...aro.org 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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