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Sylvain,<br>
<br>
Thanks for the information... I will try this.<br>
What I really need to do is to map these pages at user level (these
pages will be contiguous pages, because they are used for DMA purpose).<br>
<br>
I want to do using an mmap() entry point in a driver, in order to map
this to the user. Of course in that case ioremap() does not work.<br>
<br>
Any Clue ?<br>
<br>
Thanks - Jose<br>
<br>
Joyeau Sylvain wrote:
<blockquote
cite="midB00307ADBC68954AA8D6FB3AC8FD66F30141DE36@rennsmail05.eu.thmulti.com"
type="cite">
<pre wrap="">Jose,
You are right, PQ3 supports endianess choice on a per page basis.
Without any hook in Linux, you can remap physical address range (but RAM), by calling __ioremap() with the "_PAGE_ENDIAN" bit set in the flags.
--
sj
</pre>
<blockquote type="cite">
<pre wrap="">-----Original Message-----
From:
<a class="moz-txt-link-abbreviated" href="mailto:linuxppc-embedded-bounces+sylvain.joyeau=thomson.net@ozlabs.or">linuxppc-embedded-bounces+sylvain.joyeau=thomson.net@ozlabs.or</a>
g
[<a class="moz-txt-link-freetext" href="mailto:linuxppc-embedded-bounces+sylvain.joyeau=thomson.net@o">mailto:linuxppc-embedded-bounces+sylvain.joyeau=thomson.net@o</a>
zlabs.org] On Behalf Of Jose Almeida
Sent: vendredi 24 août 2007 09:59
To: <a class="moz-txt-link-abbreviated" href="mailto:Linuxppc-embedded@ozlabs.org">Linuxppc-embedded@ozlabs.org</a>
Subject: little endian page mapping on PQ3
Hi all,
Looking at PQ3 documentation, it looks like there is a way to select
on a page basis if we would like to map one particular page in BIG or
LITTLE endian.
This is a very nice feature when you need to exchange some data
between a PC and a PQ3 target.
I am wondering if someone have already tryed this PQ3 feature ?
I guess this would require some kind of hook in the kernel ...
Any clue ?
Thanks - Jose
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<br>
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