put it in Store-and-Forward mode right from the get-go. This eliminates
the DMA underrun errors that prevented the receive filter setup from working
and caused smashed packets to go out onto the wire.
My NetGear FA310-TX board now works.
There are still "filter setup failed to complete" messages, however they
don't appear to indicate that the filter setup actually failed, since
unicast and multicast packet reception work fine. I will address this
problem shortly.
Reading the log for the FreeBSD `pn' driver suggests that these chips are,
in fact, pretty crappy, riddled with hardware bugs (for which more workarounds
are coming).
todo:
-IPv6
-clean up jumbo buffer allocation - NetBSD provides an opaque argument
to the free function, thus doesn't need the hack done here
-deal correctly with the mapping of the shared memory
rewrite of the driver for the DECchip 21x4x Ethernet chips, and a variety
of clones.
Currently, the driver supports the Winbond 89C840F (this works pretty
well), and the Lite-On PNIC (e.g. NetGear PCI boards), however Lite-On
support may be broken [I may simply have a busted test board].
Eventually, support for the Macronix and ASIX chips will filter into
this driver, and then, slowly, support for the genuine DEC chips,
and maybe even the DE-425 EISA model.
again when switching link0 on.
XXX This stuff needs to be thought about, especially with the doomming IPv6
support, which uses yet another default mtu.
chip-dependant code this required the following changes:
- Instead of attaching the device in a generic way with some chip-dependant
routines, use a chip-dependant attach routine with some common code
factored out. The code is marginally bigger, but this allows the CMD64x
flag hack to go away.
- For chips that report per-channel 'irq triggered', test this before calling
wdcintr() for the native-pci irq case (compat intr can't be shared),
as wdcintr() has no good way to know if a irq was for it or not, and
ends up with irq loss. XXX for chips that don't have this feature irq sharing
will not work properly !
- add my copyrigth notice (could have been done some time ago I think :)
There are still some issues to be solved with the Promise controller and
ATAPI devices.
Many thanks to Paul Newhouse for shipping me 2 Ultra/33 boards for doing this
work.
now uses the DMACSR_READ bit and no longer keeps _nd_dmadir in softc
unified transfer cleanup code, now in routine next_dma_finish_xfer()
fixed bounds checking on registers after transfer.
removed checking for bus errors since the bit is always set on some nexts
(specifically, on mourning, a 25mhz 68040 mono slab)
fixed a couple of dma bugs involving chaining dma buffers.
since a few things don't yet work properly:
- Sense data isn't reported properly (err, at all).
- It doesn't work with anything other than the Iomega USB Zip drive.
- Hot-unplug doesn't work yet.
...but this is enough to make my shiny new USB Zip drive go.
thorpej