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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=isahint.sr.0.port=0x300hint.sr.0.irq=10hint.sr.0.maddr=0xd0000hint.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:
SDL Communications RISCom/N2 ISA
SDL Communications N2pci
SDL Communications WANic 400/405 PCI
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.
