"Mark A. Greer" wrote: > > The changes to the openpic code for supporting serial interrupt mode are very > minor.
Actually IIRC they're already present in the version shipped with HHL-2.0. I don't remember making any changes for that at all on the MVME2100 support, but my memory has been known to be faulty. > What I mean is a table where you specify the irq, the offset fo the regs from > the base > address, the sensitivity, and the polarity all separately. Also the > appropriate > extensions to support serial interrupt mode (e.g., MVME2100 uses that). With > a table > format something like that, you can avoid the sparse and negative irq's on the > 8240/107 and still keep things pretty clean looking. That sounds right. It could also use the NIRQ field of the Feature Reporting Register to cross-check that the table given is the correct size for the chip it's controlling, and have some way of specifying the presence or absensce of a cascaded i8259 (presumably with its own table). - Andrew -- The world is such a cheerful place when viewed from upside-down It makes a rise of every fall, a smile of every frown ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
