EMPB(4) | Device Drivers Manual (amiga) | EMPB(4) |
empb
— ELBOX
Mediator 1200 PCI bridge driver
empb0 at zbus0
emmem0 at zbus0
empm0 at zbus0
pci* at empb0
options PCI_NETBSD_CONFIGURE
The empb
driver provides support for the
PCI bus present on Mediator 1200 bridge for Amiga 1200.
The empb
driver supports the following
hardware:
BUS_SPACE_MAP_LINEAR
flag. Due to the windowed
design of Mediator, it is expected to fail miserably if normal memory
space access methods (e.g., pointer dereference) are used instead of
bus_space(9)
methods.empb
driver will work anyway, but only PCI I/O
space will be accessible. To enable memory space set the WINDOW jumper to
4MB or 8MB.The empb
device first appeared in
NetBSD 7.0.
The empb
driver was written by
Radoslaw Kujawa
<radoslaw.kujawa@gmail.com>.
It was developed using information obtained through reverse engineering by
Frank Wille and Radoslaw
Kujawa. The authors have no access to official documentation (which
is only available under NDA).
Mediator ZIV might work but is untested.
DMA to host memory is not supported. This is a hardware limitation. It is possible to implement DMA through bounce buffers in graphics card memory, but this needs further research.
February 17, 2017 | NetBSD 10.99 |