Re: Re: [ECOS] How to support DMA in an eCos driver

Re: Re: [ECOS] How to support DMA in an eCos driver

[TIanJUn]

Hi, Gary Thomas

	thanks for your help  .

    at this moment ,i run run my devive on a i386 PC.

Sincerely yours,
Tian-Jun
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 >On Wed, 2005-08-17 at 08:59 +0800, Tianjun-ZDK wrote:
>> Hi,evrybody
>> 
>> I am have a question:
>> 
>> i write a driver for a PCI device,and must support DMA,
>> 
>> but i cannot find any document which introduce this.
>> 
>> Can anybody tell me how to allocate the shared memory
>> 
>> for DMA,and how to get the physical address of a allocated
>> 
>> memory,or how to carry out DMA ?
>> 
>> thanks a lot~!
>
>There is no generic DMA support in eCos - it's done on an
>ad hoc basis, per platform.
>
>What target/platform does your device run on?
>
>-- 
>------------------------------------------------------------
>Gary Thomas                 |  Consulting for the
>MLB Associates              |    Embedded world
>------------------------------------------------------------
>
>
>-- 
>Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
>and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>


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Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss