Add device driver support for USB ethernet adapters based on the CATC

USB-EL1202A chipset. Between this and the other two drivers, we should
have support for pretty much every USB ethernet adapter on the market.
The only other USB chip that I know of is the SMC USB97C196, and right
now I don't know of any adapters that use it (including the ones made
by SMC :/ ).

Note that the CATC chip supports a nifty feature: read and write combining.
This allows multiple ethernet packets to be transfered in a single USB
bulk in/out transaction. However I'm again having trouble with large
bulk in transfers like I did with the ADMtek chip, which leads me to
believe that our USB stack needs some work before we can really make
use of this feature. When/if things improve, I intend to revisit the
aue and cue drivers. For now, I've lost enough sanity points.

1 files changed, 85 insertions, 0 deletions

diff --git a/share/man/man4/cue.4 b/share/man/man4/cue.4
new file mode 100644
index 0000000..41e2b18
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+++ b/share/man/man4/cue.4
@@ -0,0 +1,85 @@
+.\" Copyright (c) 1997, 1998, 1999, 2000
+.\"	Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
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+.\"	This product includes software developed by Bill Paul.
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+.\"
+.\" $FreeBSD$
+.\"
+.Dd January 13, 2000
+.Dt CUE 4 i386
+.Os FreeBSD
+.Sh NAME
+.Nm cue
+.Nd
+CATC USB-EL1201A USB Ethernet driver
+.Sh SYNOPSIS
+.Cd "controller uhci0"
+.Cd "controller ohci0"
+.Cd "controller usb0"
+.Cd "device cue0"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for USB ethernet adapters based on the Computer
+Access Technology Corporation's USB-EL1202A chipset, including the
+CATC Netmate and Netmate II, and the Belkin F5U111.
+.Pp
+The USB-EL1202A supports a 512-bit multicast hash filter, single perfect
+filter entry for the station address and promiscuous mode. Packets are
+received and transmitted over separate USB bulk transfer endpoints.
+.Pp
+The CATC adapter supports only 10mbps half-duplex mode, hence there
+are no
+.Xr ifmedia 4
+modes to select.
+.Pp
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "cue%d: watchdog timeout"
+A packet was queued for transmission and a transmit command was
+issued, however the device failed to acknowledge the transmission
+before a timeout expired.
+.It "cue%d: no memory for rx list"
+The driver failed to allocate an mbuf for the receiver ring.
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr netintro 4 , 
+.Xr ifconfig 8
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 4.0 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Bill Paul Aq wpaul@ee.columbia.edu .