2 .\" Copyright (c) 1996 John Hay. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
12 .\" 3. All advertising materials mentioning features or use of this software
13 .\" must display the following acknowledgement:
14 .\" This product includes software developed by John Hay.
15 .\" 4. Neither the name of the author nor the names of any co-contributors
16 .\" may be used to endorse or promote products derived from this software
17 .\" without specific prior written permission.
19 .\" THIS SOFTWARE IS PROVIDED BY John Hay ``AS IS'' AND
20 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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26 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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31 .\" $FreeBSD: src/share/man/man4/man4.i386/sr.4,v 1.15.2.4 2001/08/17 13:08:46 ru Exp $
32 .\" $DragonFly: src/share/man/man4/man4.i386/sr.4,v 1.7 2006/11/14 22:27:49 swildner Exp $
39 .Nd synchronous RISCom/N2 / WANic 400/405 device driver
41 .Cd "device sr0 at isa? port 0x300 irq 10 iomem 0xd0000"
42 .Cd "device sr1 at isa? port 0x310 irq 11 flags 0x1 iomem 0xd0000"
44 .Cd "pseudo-device sppp"
48 driver supports the RISCom/N2 ISA cards and the WANic 400/405 PCI cards
49 that is based on the HD64570 chip.
53 sppp code is used for the link level layer.
55 default protocol used is PPP.
56 The Cisco HDLC protocol can be used by
62 Alternately, the driver can be compiled to support
69 If it isn't specified, the driver will
72 .Bl -hang -offset indent
73 .It "The card has 2 ports."
74 .It "The clock for the serial ports is external and the transmitter uses"
75 the same clock as the receiver.
80 are a bit field and can be used to force a different
81 behaviour than the default.
83 .Bl -hang -offset indent
85 The card has only one port.
87 Use separate external clocks for transmit and receive on port 0.
89 Use separate external clocks for transmit and receive on port 1.
92 Only one line for each card is needed in the kernel configuration file.
93 The first card's ports will be installed from sr0. The numbering of the
94 next card will continue where the first stopped, eg. if the first card
95 is a two port card it will use sr0 and sr1. The next card will then
98 The card only supports IRQ 3, 4, 5, 7, 10, 11, 12 and 15.
100 The iomem area is a 16Kb block and must start at a 16Kb boundary.
102 If the kernel is compiled with
103 .Cd "options NETGRAPH"
104 then the sppp and Cisco HDLC modes are disabled (and the sppp driver
105 is unneeded), and this driver functions as a
107 node with a single hook named
109 Connecting to this hook enables the transmission of raw HDLC frames.
110 The node will have the same name as the device with ``sync_''
114 .Bl -tag -width /sys/machine/pc32/isa/ic/hd64570.h -compact
115 .It Pa /sys/dev/netif/sr/if_sr.c
116 .It Pa /sys/dev/netif/sr/if_sr.h
117 .It Pa /sys/dev/netif/sr/if_sr_pci.c
118 .It Pa /sys/dev/netif/sr/if_srregs.h
119 .It Pa /sys/machine/pc32/isa/ic/hd64570.h
123 .It "sr%d: Warning illegal interrupt %d."
124 The card cannot use the specified interrupt.
125 Choose a different one.
137 device driver was written by
138 .An John Hay Aq jhay@FreeBSD.org .
140 Netgraph support was added by
141 .An Julian Elischer Aq julian@FreeBSD.org .
143 At the moment only the X.21 interface is tested.
145 may need tweaks to the clock selection code.
147 The code can probably stand some optimizing.