bhanu jampala wrote:
Hi All,
How do I convert a DMA buffer address to its respective virtual
address in Linux PPC world?
I am not finding appropriate functions to do that?
How are people doing it on PPC platforms?
What I trying to do:
This is for MCC i.e. Buffer Desc and buffer are in main memory (DMA
memory)
I have submitted some DMA buffer from a chunk of memory to Device.
Now at the end of successful receive, where I know the DMA address by
reading from the buffer Descriptors.
Now from this DMA address, how do I find out the Virtual address so
that I can perform a read on that buffer?
If you know the physical address of the device buffer you could use
mmap() to get the virtual address.
Regards,
Mukund Jampala
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Regards,
R.S.Shree Ram
GDA Technologies Ltd.
