Re: Iso write function
Brought to you by:
aeb,
bencollins
From: Andreas B. <and...@mu...> - 2000-04-25 19:56:55
|
On Tue, Apr 25, 2000 at 03:31:32PM +0200, ACCARIE Jean-Paul wrote: > I'd like to know what is the current situation concerning > iso write function: > 1- I browsed the source code very quickly and didn't find > anything whatever the level (ohci1394, ieee1394 or raw1394) > Is this the same for pcilynx and aic5800? It seems simple to implement iso sending for the PCILynx hardware. I guess OHCI isn't that hard either. > 2- I'd like to know if there is somebody already in charge of > writing such iso writing function. > If so, I'd like to know how I can contribute (coding, > debugging,...) although I am very busy as everybody there;-) I'd do the PCILynx part anyway. > 3- Is there somebody here who already coded some basic implementation > even if it has not been registered within CVS and that could be > taken as a basis? The subsystem supports different types of packets to send (iso is one of them), but e.g. PCILynx just assumes async packets. The hardware part should be implemented first and be tested. > 4- I was also wondering why this feature was missing: is there > any tricky issues? Management and allocation of resources (and reallocation after bus reset). While I'm implementing GUID collecting here I found out it's not that hard to do subsystem initiated transactions (i.e. transactions which were not requested by a process). -- Andreas E. Bombe <and...@mu...> DSA key 0x04880A44 http://home.pages.de/~andreas.bombe/ http://linux1394.sourceforge.net/ |