MPC8541E DMA transfer

[Bizhan Gholikhamseh (bgholikh)]

Is there any support in Linux 2.6.X for using this controller, if so,
are you aware of any test driver I can take a look at?

Thanks,
Bizhan

Many thanks in  

-----Original Message-----
From: Kumar Gala [mailto:kumar.gala at freescale.com] 
Sent: Wednesday, August 03, 2005 11:24 AM
To: Bizhan Gholikhamseh (bgholikh)
Cc: linuxppc-embedded at ozlabs.org
Subject: Re: MPC8541E DMA transfer

I dont see any reason you couldn't use the internal DMA engine on the
MPC8541E to do what you need.  You will just need to schedule the work
every 10ms.

- kumar

On Aug 3, 2005, at 10:04 AM, Bizhan Gholikhamseh \(((bgholikh\))) wrote:

>
> Hi all,
> I am developing a linux driver (2.6.10) for Freescale MPC8541E 
> (customized board) to read and write 8 buffers (each buffer is 960 
> bytes
> long) every 10 ms to/from a custom made PCI card with on board DSP 
> Chip.
> The chip's internal and external memories are memory mapped to the CPU

> address space.
> For reason that is beyond the discussion here, the DMA request line on

> the PCI card is not connected although the PCI card has DMA 
> capabilities.
> So what are my options?
> Could I still do DMA transfer from the Host to the device?
>
> Many thanks in advance,
> Bizhan
>
> <ATT293768.txt>
>