configuring w/o SIO broke compilation. I forget why, but there was at one
point (and may still be) a dependency between SIO and EISA. This change
just makes things compile sensibly again. It may make no sense to build
a kernel w/o sio in this case. I can't test this conveniently because I
haven't got a 4100 with a video card in it at the moment.
- Actually display the kn300 irq, not the MCPCIA irq, in the interrupt
string. Also, don't bother displaying device/pin on strays, since
it doesn't play will with shared interrupts that would happen due to
a PCI-PCI bridge.
- Shave a few more cycles out of the interrupt dispatch routine.
The access is more efficient this way (and this was done in the interrupt
dispatch code, so some cycles are actually shaved), and gcc gets annoyed
when chars are used as array subscripts.
- Adjust for the fixed Rawhide console initialization.
- When mapping a PCI interrupt, don't always map device 1 to IRQ 16. Device
1 is only the internal 53c810 on MID 5, and is an invalid device number
on any other MID.
- Adjust for change mcpcia_config/mcpcia_softc structures.
- Nuke the kludgy linked list of mcpcia_softc structures. Instead, just
use savunit[v] to index into mcpcia_cd.cd_devs[] to find the MCPCIA
which has the stray interrupt.
- Some other minor cosmetic cleanup.
mjacob