[U-Boot] [PATCH] drivers/block/systemace: replaced in16/out16 with more common readw/writew macros
Алексей Бродкин
alexey.brodkin at gmail.com
Fri Jan 4 10:29:44 CET 2013
Hi Wolfgang,
but then do you think if there's any way to use some generic
read/write routines?
The problem is we use ml509 board loaded with Synopsys DW ACR700 core
and we need to access SystemACE CF-card controller (to boot Linux
kernel mainly).
Or should I just add conditional branch for ARC architecture?
Regards,
Alexey
2013/1/3 Wolfgang Denk <wd at denx.de>:
> Dear Alexey,
>
> please don't top post / full quote, and please keep the ML on Cc: - thanks.
>
> In message <CAML3pwX=dfC4vfRfg-Rft5Xuem7q4-7VjtmySvitzWzY3z8JBg at mail.gmail.com> you wrote:
>>
>> And what if you use "__raw_writew"/"__raw_readw" instead?
>
> I'd rather not try that, as the __raw_* functions are missing the
> memory barriers that are mandatory for such device access.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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> never learn anything from history. - George Bernard Shaw
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