On Jun 6, 2014, at 10:40 AM, David Young <[email protected]> wrote: > 1 An MI API for establishing "mailboxes" (or "doorbells" or whatever > we may call them). A mailbox is a special physical address (PA) or > PA/data-pair in correspondence with a callback (function, argument). > > An MI API for mapping the mailbox into various address spaces, > but especially the message-signalling devices. In this way, the > mailbox API is a use or an extension of bus_dma(9). > > Somewhere I have a draft proposal for this MI API, I will try to > dig it up.
Note that some system need to point the MSI at a specific address (PPC PQIII for instance).
