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sr (4)
  • >> sr (4) ( FreeBSD man: Специальные файлы /dev/* )

  • BSD mandoc
     

    NAME

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

    SYNOPSIS

    device sr

    For ISA cards, in /boot/device.hints hint.sr.0.at=isa hint.sr.0.port=0x300 hint.sr.0.irq=10 hint.sr.0.maddr=0xd0000 hint.sr.0.flags=0x0

    device sppp  

    DESCRIPTION

    The driver supports the RISCom/N2 ISA cards, N2pci and the WANic 400/405 PCI cards that are based on the HD64570 chip.

    If you have ISA cards, you need to specify the resources for them in /boot/device.hints If you have the second ISA card, add

    hint.sr.1.at="isa"
    hint.sr.1.port="0x310"
    hint.sr.1.irq="11"
    hint.sr.1.maddr="0xd0000"
    hint.sr.1.flags="0x0"

    The standard Fx 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 specification in /boot/device.hints is optional. If it is not 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.

    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.  

    HARDWARE

    The driver supports the following hardware:

     

    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.

     

    SEE ALSO

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

    AUTHORS

    An -nosplit The device driver was written by An John Hay Aq [email protected] .

    Netgraph support was added by An Julian Elischer Aq [email protected] .  

    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.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    HARDWARE
    NETGRAPH SUPPORT
    DIAGNOSTICS
    SEE ALSO
    AUTHORS
    BUGS


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