Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
SR(4)               FreeBSD Kernel Interfaces Manual (i386)              SR(4)

NAME
     sr - synchronous RISCom/N2 / WANic 400/405 device driver

SYNOPSIS
     device sr0 at isa? port 0x300 irq 10 iomem 0xd0000
     device sr1 at isa? port 0x310 irq 11 flags 0x1 iomem 0xd0000

     pseudo-device sppp

DESCRIPTION
     The sr driver supports the RISCom/N2 ISA cards and the WANic 400/405 PCI
     cards that is based on the HD64570 chip.

     The standard FreeBSD sppp code is used for the link level layer.  The
     default protocol used is PPP.  The Cisco HDLC protocol can be used by
     adding link2 to ifconfig(8).

     Alternately, the driver can be compiled to support netgraph(4) (see
     below).

     The flags field is optional.  If it isn't specified, the driver will
     assume the following:

           The card has 2 ports.

           The clock for the serial ports is external and the transmitter uses the
                   same clock as the receiver.

     The flags are a bit field and can be used to force a different behaviour
     than the default.

           0x01    The card has only one port.

           0x10    Use separate external clocks for transmit and receive on
                   port 0.

           0x40    Use separate external clocks for transmit and receive on
                   port 1.

NUMBERING
     Only one line for each card is needed in the kernel configuration file.
     The first card's ports will be installed from sr0. The numbering of the
     next card will continue where the first stopped, eg. if the first card is
     a two port card it will use sr0 and sr1. The next card will then start at
     sr2.

     The card only supports IRQ 3, 4, 5, 7, 10, 11, 12 and 15.

     The iomem area is a 16Kb block and must start at a 16Kb boundary.

NETGRAPH SUPPORT
     If the kernel is compiled with options NETGRAPH then the sppp and Cisco
     HDLC modes are disabled (and the sppp driver is unneeded), and this
     driver functions as a netgraph(4) node with a single hook named rawdata.
     Connecting to this hook enables the transmission of raw HDLC frames.  The
     node will have the same name as the device with ``sync_'' prepended,
     e.g., sync_sr0.

DIAGNOSTICS
     sr%d: Warning illegal interrupt %d.  The card cannot use the specified
     interrupt.  Choose a different one.

FILES
     /sys/i386/isa/ic/hd64570.h
     /sys/i386/isa/if_srregs.h
     /sys/i386/isa/if_sr.c
     /sys/i386/isa/if_sr.h
     /sys/pci/if_sr_p.c

BUGS
     At the moment only the X.21 interface is tested.  The others may need
     tweaks to the clock selection code.

     The code can probably stand some optimizing.

SEE ALSO
     ar(4), cx(4), netgraph(4), netintro(4), ifconfig(8)

AUTHORS
     The sr device driver was written by John Hay <jhay@FreeBSD.org>.

     Netgraph support was added by Julian Elischer <julian@FreeBSD.org>.

FreeBSD 11.0-PRERELEASE          July 4, 1996          FreeBSD 11.0-PRERELEASE

NAME | SYNOPSIS | DESCRIPTION | NUMBERING | NETGRAPH SUPPORT | DIAGNOSTICS | FILES | BUGS | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=sr&sektion=4&manpath=FreeBSD+4.5-RELEASE>

home | help