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/share/man/man4/man4.i386/sbni.4

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  1.\" Written by Denis I. Timofeev, 2002.
  2.\"
  3.\" Redistribution and use in source and binary forms, with or without
  4.\" modification, are permitted provided that the following conditions
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  6.\" 1. Redistributions of source code must retain the above copyright
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  8.\" 2. Redistributions in binary form must reproduce the above copyright
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 24.\" $FreeBSD$
 25.\"
 26.Dd January 8, 2002
 27.Dt SBNI 4 i386
 28.Os
 29.Sh NAME
 30.Nm sbni
 31.Nd Granch SBNI12 leased line modem driver
 32.Sh SYNOPSIS
 33.Cd "device sbni"
 34.Sh DESCRIPTION
 35The
 36.Nm
 37driver provides support for leased line modems of following models:
 38.Pp
 39.Bl -bullet -compact
 40.It
 41SBNI12-02, SBNI12D-02
 42.It
 43SBNI12-04, SBNI12D-04
 44.It
 45SBNI12-05, SBNI12D-05, ISA and PCI
 46.It
 47SBNI12-10, SBNI12D-10, ISA and PCI
 48.El
 49.Pp
 50and a kit for data link over a voice band:
 51.Bl -bullet
 52.It
 53SBNI12-11, SBNI12D-11, ISA and PCI.
 54.El
 55.Pp
 56In addition to the standard port and IRQ specifications, the
 57.Nm
 58driver also supports a number of
 59.Va flags
 60which can set baud rate, receive level, and low three bytes of Ethernet
 61MAC-address (high three are always
 62.Li 00:ff:01 ) ,
 63because Granch modems are
 64presented to the system as Ethernet-like network cards.
 65.Pp
 66The high byte of the
 67.Va flags
 68is a bit field, it is used to specify SBNI adapter receive level/baud rate:
 69.Bl -tag -width "Bits 0-3:" -offset indent
 70.It "Bits 0-3:"
 71receive level (0x00..0x0f)
 72.It "Bits 4-5:"
 73baud rate number:
 74.Pp
 75.Bl -inset -compact
 76.It "00 -"
 770 baud rate (2Mb in fast mode/500kb in slow)
 78.It "01 -"
 791 baud rate (1Mb/250kb)
 80.It "10 -"
 812 baud rate (500kb/125kb)
 82.It "11 -"
 833 baud rate (250kb/62.5kb)
 84.El
 85.It "Bit 6:"
 86use fixed receive level
 87.Pp
 88if bit 6 is set then receive level will be set according
 89to bits 0-3 value, otherwise receive level will be
 90autodetected
 91.It "Bit 7:"
 92use fixed baud rate
 93.Pp
 94if bit 7 is set then baud rate will be set according to
 95bits 4-5 value, otherwise baud rate is set to 2Mb
 96.El
 97.Sh FILES
 98The sources for the driver reside in:
 99.Pp
100.Bl -tag -width ".Pa /sys/dev/sbni/if_sbni.c" -compact
101.It Pa /sys/dev/sbni/if_sbni.c
102.It Pa /sys/dev/sbni/if_sbnireg.h
103.It Pa /sys/dev/sbni/if_sbnivar.h
104.El
105.Sh SEE ALSO
106.Xr arp 4 ,
107.Xr netintro 4 ,
108.Xr ifconfig 8
109.Sh HISTORY
110The
111.Nm
112device driver first appeared in
113.Fx 4.6 .
114.Sh AUTHORS
115.An -nosplit
116The
117.Nm
118device driver for
119.Fx
1204.x was written by
121.An Denis I. Timofeev ,
122partially based on
123.An David Greenman Ns 's
124.Xr ed 4
125driver.
126Earlier versions (available on
127.Pa ftp.granch.com )
128were written by
129.An Alexey V. Zverev .
130.Pp
131SBNI12 hardware was designed by
132.An Alexey V. Chirkov .