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How to support DMA in an eCos driver
- From: "Tianjun-ZDK" <Tianjun at zcom dot unimis dot com>
- To: "eCos Disuss" <ecos-discuss at ecos dot sourceware dot org>
- Date: Wed, 17 Aug 2005 08:59:10 +0800
- Subject: [ECOS] How to support DMA in an eCos driver
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~!
Sincerely yours,
Tian-Jun
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