* Covert DMA address to Virtual address on Linux PPC
@ 2008-09-17 19:13 bhanu jampala
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From: bhanu jampala @ 2008-09-17 19:13 UTC (permalink / raw)
To: linuxppc-embedded; +Cc: rmcguire, M. Warner Losh
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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?
Regards,
Mukund Jampala
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2008-09-17 19:13 Covert DMA address to Virtual address on Linux PPC bhanu jampala
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