I've taken the code modifications originally begun by Gerald Heinig (and continued by Erik Reid) and have been poking at it in order to bring Indigo R4k support in line with the IP22/24. It is essentially there, supporting SCSI, ethernet and the dp clock. Currently it's a mess of ifdef's which, for the most part, alter HPC3 register offsets as well as the DMA descriptor layout. My aim is to work the code into such a shape where a kernel can be built for any of the HPC platforms (at least IP20-24).

I've discussed this a little bit already with Rafal and would appreciate some brain storming from other developers as to the best way of achieving this. I think that a separate HPC driver and dma functions will need to be written for the 1.5. If that were to happen, would the standard naming scheme follow say, the sun cg6 graphics adapter: hpcone*, hpcthree*, etc?

There may be far better solutions I cannot conceive of. Any input is appreciated.

Recent code tracking -current, in a workable, but very hacked up state, can be found at www.cataclysmic.org/sgimips/

-Steve