- No more distinction between i/o-mapped and memory-mapped
devices. It's all "bus space" now, and space tags
differentiate the space with finer grain than the
bus chipset tag.
- Add memory barrier methods.
- Implement space alloc/free methods.
- Implement region read/write methods (like memcpy to/from
bus space).
This interface provides a better abstraction for dealing with
machine-independent chipset drivers.
While I'm here, convert driver to use <machine/bus.h> and the new PCI
I/O space interface (the new PCI interrupt interface was already in-use).
Also, correct a "corrected" printf.
naming conflicts between bus attachments on ports that can have
multiple instances of the LANCE.
Add a real PCI front-end for PCnet-PCI Ethernet cards.
Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_reset)()
to take a struct ifnet *, rather than a unit number.
