On Tue, 13 Jun 2000, Mayhall, Tony wrote:
> Does anyone have an example (that works) of how to DMA from a PCI card into
> user space on a PC running Linux? We do this on Unix systems and need to be
> able to do this under Linux.
>
> Thanks for any input you can give,
>
> Anthony Mayhall
> Boeing Phantom Works
> (256)876-2204
>
Hmm. From what Unix Systems? Suns don't have 'ports'. All memory-mapped
I/O. The PCI spec was designed around shared memory. Once you got shared
memory, all you have to do is mmap it. No DMA required.
Cheers,
Dick Johnson
Penguin : Linux version 2.3.36 on an i686 machine (400.59 BogoMips).
"Memory is like gasoline. You use it up when you are running. Of
course you get it all back when you reboot..."; Actual explanation
obtained from the Micro$oft help desk.
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