disabling mpt2sas interrupts on per reply_q basis and blk-iopoll

I've been playing around with adding blk-iopoll support in the mpt2sas driver. The problem I ran into is that I need a way to mask interrupts per reply_q instead of the global per controller interrupt mask. Does anyone know if that is possible and how to do that? I don't think it's possible to support blk-iopoll properly with the 1:1 of reply_q per CPU otherwise. Maybe one of the LSI guys is watching the mailing list and can respond to my question? :) Thanks!