pakorn_0608 wrote:
> Thanks so much,BMS.
> It's very kind of you.
>
> I'm finding another source of knowledge for solve this problem.
> For "flush_dcache_page" included in "loop.c", It's good guildline for me.
> I'll see and learn from it.
>
> If any progress,i'll come to share again.
>
> BTW, I have to go to province on the evening and come back on monday, It's
> hardly to play the net.
> If any message from you,i may have chance to reply on monday.
>
> Thanks in advance.
>
>
Gosh - its been a long time since I've done this stuff.
Its coming back slowly.
First thing: check this reference:
http://www.xml.com/ldd/chapter/book/ch13.html
You might just want to buy a copy actually. I found it indispensable
when doing driver development.
Second, look at:
http://lxr.free-electrons.com/source/Documentation/DMA-API.txt
In particular, section Id on streaming maps. I believe you can just use
the dma_map_single api calls to correctly handle the cache coherency
needed for the M2M.
Good luck.
-bms
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