Hi, On Wed, 2004-12-15 at 07:58, Michael S. Tsirkin wrote: > Hello! > I'd like to start working on MT25218 (aka Arbel memfree, aka native mode) > support for openib gen2. > > There are many similiarities with MT25208, but there are also > major differences, and a lot of extra setup to be done > to compensate for the absence of on-board memory, > which unfortunately affects not only the set-up > commands but also performance-critical data path verbs > (e.g. posting WQEs, CQ polling). > > What would be the best way to organise this code? > I guess could be two thinkable ways to do this: > > 1. Add the functionality to the mthca module, > use a run-time flag to describe hardware differences. > Thus, the same module will handle devices of all > types. > > 2. Create a sibling or a child directory to mthca, > and export common functions from mthca. > In this case we will have two kernel modules, > sharing some common files. > > I am leaning towards option 2 for both the performance > reasons and for better separation between drivers. > > > Therefore, I propose adding a directory memfree under > > https://openib.org/svn/gen2/trunk/src/linux-kernel/infiniband/hw/mthca/memfree > > and all memfree specific code will go there.
There already is some Arbel native code in mthca. I believe the path being taken is more in lines with approach 1. As Roland is the maintainer of this, you would need to coordinate with him. I would expect we can utilize your offer to accelerate Arbel native support, which a number of people have asked about. Also, with this work, would Tavor also be made to work with DDR hidden ? -- Hal _______________________________________________ openib-general mailing list [EMAIL PROTECTED] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
