NAME
hy —
Network Systems Hyperchannel
interface
SYNOPSIS
hy0 at uba0 csr 0172410 vector hyint
DESCRIPTION
NOTE: This driver has not been ported from
4.4BSD yet.
The
hy interface provides access to a Network Systems
Corporation Hyperchannel Adapter.
The network to which the interface is attached is specified at boot time with an
SIOCSIFADDR
ioctl(2). The host's address
is discovered by reading the adapter status register. The interface will not
transmit or receive packets until the network number is known.
DIAGNOSTICS
- hy%d: unit number 0x%x port %d type %x
microcode level 0x%x.
- Identifies the device during autoconfiguration.
- hy%d: can't handle af%d.
- The interface was handed a message with addresses
formatted in an unsuitable address family; the packet was dropped.
- hy%d: can't initialize.
- The interface was unable to allocate UNIBUS resources.
This is usually due to having too many network devices on an 11/750 where
there are only 3 buffered data paths.
- hy%d: NEX - Non Existent
Memory.
- Non existent memory error returned from hardware.
- hy%d: BAR overflow.
- Bus address register overflow error returned from
hardware.
- hy%d: Power Off bit set, trying to
reset.
- Adapter has lost power, driver will reset the bit and see
if power is still out in the adapter.
- hy%d: Power Off Error, network
shutdown.
- Power was really off in the adapter, network connections
are dropped. Software does not shut down the network unless power has been
off for a while.
- hy%d: RECVD MP > MPSIZE
(%d).
- A message proper was received that is too big. Probable a
driver bug. Shouldn't happen.
- hy%d: xmit error - len > hy_olen [%d
> %d].
- Probable driver error. Shouldn't happen.
- hy%d: DRIVER BUG - INVALID STATE
%d.
- The driver state machine reached a non-existent state.
Definite driver bug.
- hy%d: watchdog timer expired.
- A command in the adapter has taken too long to complete.
Driver will abort and retry the command.
- hy%d: adapter power restored.
- Software was able to reset the power off bit, indicating
that the power has been restored.
SEE ALSO
inet(4),
netintro(4)
HISTORY
The
hy interface appeared in
4.2BSD.
BUGS
If the adapter does not respond to the status command issued during
autoconfigure, the adapter is assumed down. A reboot is required to recognize
it.
The adapter power fail interrupt seems to occur sporadically when power has, in
fact, not failed. The driver will believe that power has failed only if it can
not reset the power fail latch after a “reasonable” time interval.
These seem to appear about 2-4 times a day on some machines. There seems to be
no correlation with adapter rev level, number of ports used etc. and whether a
machine will get these “bogus powerfails”. They don't seem to
cause any real problems so they have been ignored.