SE(4) BSD Kernel Interfaces Manual SE(4)NAME
se -- Cabletron EA41x SCSI bus Ethernet interface driver
SYNOPSIS
se* at scsibus? target ? lun ?
DESCRIPTION
The se driver supports the Cabletron EA41x SCSI bus Ethernet interface.
This driver is a bit unusual. It must look like a network interface and it must also appear to be a SCSI device to the SCSI system.
In addition, to facilitate SCSI commands issued by userland programs, there are open(), close(), and ioctl() entry points. This allows a
user program to, for example, display the EA41x statistic and download new code into the adaptor - functions which can't be performed through
the ifconfig(8) interface. Normal operation does not require any special userland program.
SEE ALSO scsi(4), ifconfig(8)AUTHORS
Ian Dall <ian.dall@dsto.defence.gov.au>
Acknowledgement: Thanks are due to Philip L. Budne <budd@cs.bu.edu> who reverse engineered the EA41x. In developing this code, Phil's user-
land daemon "etherd", was referred to extensively in lieu of accurate documentation for the device.
BUGS
The EA41x doesn't conform to the SCSI specification in much at all. About the only standard command supported is "inquiry". Most commands
are 6 bytes long, but the recv data is only 1 byte. Data must be received by periodically polling the device with the recv command.
BSD February 3, 1997 BSD
Check Out this Related Man Page
CH(4) BSD Kernel Interfaces Manual CH(4)NAME
ch -- SCSI media changer driver
SYNOPSIS
ch* at scsibus? target ? lun ?
DESCRIPTION
The ch driver is essentially an ioctl(2) interface to a robot on a SCSI bus - a device that will change media (e.g. tapes, CD-ROMs, etc) in
and out of drives for that media. The chio(1) utility program uses this interface to manipulate such robots.
FILES
/dev/chu SCSI bus media changer unit u
/usr/include/sys/chio.h
DIAGNOSTICS
ch%d: waiting %d seconds for changer to settle... Some changers require a long time to settle out, to do tape inventory, for instance.
ch%d: offline The changer is not responding.
ch%d: warning, READ ELEMENT STATUS avail != count
ch%d: could not sense element address page
ch%d: could not sense capabilities page
SEE ALSO chio(1), ioctl(2), cd(4), intro(4), scsi(4), st(4)AUTHORS
Jason R. Thorpe
BSD June 10, 1998 BSD
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