>>>>> "Matthias" == Matthias Drochner <drochner@zelux6.zel.kfa-juelich.de> writes:
    Matthias> You should make sure that the common code does compile
    Matthias> even if the platform doesn't implement the bus_dma interface.
 
  Agreed.

    Matthias> Perhaps some words to the code structure which got one more
    Matthias> dimension since I split the am7990 and am79900 code:
    Matthias> am7990 is the old LANCE chip with 16-bit descriptors (and
    Matthias> 24-bit addressing capability). This driver part is used by all
  
  One thing that confused me about the 7990 stuff. When they are present on
VME/obio sun3/sparc'en, I know that they do DVMA. As far I can tell, they
use a rather small buffer of DVMA. (On sbus, there is an lebuffer, which
I assume they are restricted to.)

    Matthias> So the "direct DMA" capability should be orthogonal to the
    Matthias> existing features. This looks quite like a challenge, but it is
    Matthias> certainly worth a try.

  Okay. 

   :!mcr!:            |  Network and security consulting/contract programming
   Michael Richardson |         Firewalls, TCP/IP and Unix administration
 Personal: http://www.sandelman.ottawa.on.ca/People/Michael_Richardson/Bio.html
 Corporate: http://www.sandelman.ottawa.on.ca/SSW/
	ON HUMILITY: To err is human, to moo bovine.