mppb —
Prometheus PCI bridge driver
mppb* at zbus0
pci* at mppb?
The mppb driver provides support for the PCI bus present
on Prometheus Zorro III to PCI bridge card.
The mppb driver supports the following hardware:
- PROMETHEUS
- Matay Prometheus. Manufacturer 44359, product 1.
The mppb device first appeared in
NetBSD 6.0.
The hardware does not support DMA to host memory.
The Prometheus does not support repeating of PCI transactions,
instead if the PCI card demands a retry of transaction, it returns value
0xFFFFFFFF. This is currently not handled by the
mppb driver and will confuse some PCI card
drivers.