Subject: Re: [RFC PATCH 07/19] powerpc: gamecube/wii: declare as non-coherent platforms

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 26 Nov 2009 16:09:30 +1100

On Sun, 2009-11-22 at 23:01 +0100, Albert Herranz wrote:
> The processors bundled in the Nintendo GameCube and Wii video game consoles
> require explicit cache handling when DMA engines are used.

That reminds me we really need to make that a runtime option some day...

Cheers,
Ben.

> Signed-off-by: Albert Herranz <[email-masked]>
> ---
>  arch/powerpc/platforms/Kconfig.cputype     |    2 +-
>  arch/powerpc/platforms/embedded6xx/Kconfig |    1 +
>  2 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index e382cae..80d934b 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -312,7 +312,7 @@ config NR_CPUS
>  
>  config NOT_COHERENT_CACHE
>  	bool
> -	depends on 4xx || 8xx || E200 || PPC_MPC512x
> +	depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
>  	default y
>  
>  config CHECK_CACHE_COHERENCY
> diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
> index 97a2dbc..31487e4 100644
> --- a/arch/powerpc/platforms/embedded6xx/Kconfig
> +++ b/arch/powerpc/platforms/embedded6xx/Kconfig
> @@ -93,4 +93,5 @@ config MPC10X_STORE_GATHERING
>  
>  config GAMECUBE_COMMON
>  	bool
> +	select NOT_COHERENT_CACHE
>