sbni4

Usage

Overview

The sbni driver provides support for leased line modems of following models:

• SBNI12-02, SBNI12D-02

• SBNI12-04, SBNI12D-04

• SBNI12-05, SBNI12D-05, ISA and PCI

• SBNI12-10, SBNI12D-10, ISA and PCI

and a kit for data link over a voice band:

• SBNI12-11, SBNI12D-11, ISA and PCI.

In addition to the standard port and IRQ specifications, the sbni driver also supports a number of flags which can set baud rate, receive level, and low three bytes of Ethernet MAC-address (high three are always 00:ff:01), because Granch modems are presented to the system as Ethernet-like network cards.

The high byte of the flags is a bit field, it is used to specify SBNI adapter receive level/baud rate:

Bits 0-3:

receive level (0x00..0x0f)

Bits 4-5:

baud rate number:

00 -

0 baud rate (2Mb in fast mode/500kb in slow)

01 -

1 baud rate (1Mb/250kb)

10 -

2 baud rate (500kb/125kb)

11 -

3 baud rate (250kb/62.5kb)

Bit 6:

use fixed receive level

if bit 6 is set then receive level will be set according to bits 0-3 value, otherwise receive level will be autodetected

Bit 7:

use fixed baud rate

if bit 7 is set then baud rate will be set according to bits 4-5 value, otherwise baud rate is set to 2Mb

Files

The sources for the driver reside in:

/sys/dev/sbni/if_sbni.c

/sys/dev/sbni/if_sbnireg.h

/sys/dev/sbni/if_sbnivar.h