Anything the change to nexus.c that Peter Wemm made would change?
1.15 Mon Aug 23 19:23:33 1999 UTC by peter
CVS Tags: HEAD
Diffs to 1.14
The nexus_attach() code works a lot better if it's actually connected to
the device methods... Also, don't fail to add eisa/isa because a
previous device failed to attach.
1.14 Sun Aug 22 19:56:55 1999 UTC by peter
Diffs to 1.13
Take advantage of the apm/npx code and let them identify themselves
rather than having explicit hooks here. Treat the eisa/isa attach a
little differently so that we defer the decision about to attach
eisa/isa to the motherboard directly only if the PCI probe (if it
exists) fails to turn up a PCI->EISA/ISA bridge. This restores the
original device geometry where ISA and/or EISA attach to their bridge
rather than bypassing and going to the root.
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/nexus.c
> > Okay, further investigation shows that configure() has the following
> > code:
> >
> > #if NPNP > 0
> > /* Activate PNP. If no drivers are found, let ISA probe them.. */
> > pnp_configure();
> > #endif
> >
> > /*
> > * Explicitly probe and attach ISA last. The isa bus saves
> > * it's device node at attach time for us here.
> > */
> > if (isa_bus_device)
> > bus_generic_attach(isa_bus_device);
> >
> > However isa_bus_device is still NULL so we never get any ISA devices
> > attached. No ISA devices means no console (the VGA card and serial ports
> > are both ISA devices), so we explode.
> >
> > Since the ISA bus in this machine is on-board instead of being hung
> > off a PCI to ISA bridge, I suspect that somebody broke the handling
> > on on-board ISA buses.
> >
> > Thank you very much, may I have another.
>
> It seems like isa bus is never being attached for some reason. Have a
> look at nexus_attach() and see if anything suspicious is happening (like
> an error return from device_probe_and_attach()).
>
> --
> Doug Rabson Mail: [EMAIL PROTECTED]
> Nonlinear Systems Ltd. Phone: +44 181 442 9037
>
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