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
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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 1.9 2008/07/09 16:23:55 thomas Exp $
39 .Nd synchronous RISCom/N2 / WANic 400/405 device driver
43 .Cd "pseudo-device sppp"
47 driver supports the WANic 400/405 PCI cards
48 that are based on the HD64570 chip.
52 sppp code is used for the link level layer.
54 default protocol used is PPP.
55 The Cisco HDLC protocol can be used by
61 Alternately, the driver can be compiled to support
68 If it isn't specified, the driver will
70 .Bl -hang -offset indent
71 .It "The card has 2 ports."
72 .It "The clock for the serial ports is external and the transmitter uses"
73 the same clock as the receiver.
78 are a bit field and can be used to force a different
79 behaviour than the default.
80 .Bl -hang -offset indent
82 The card has only one port.
84 Use separate external clocks for transmit and receive on port 0.
86 Use separate external clocks for transmit and receive on port 1.
89 Only one line for each card is needed in the kernel configuration file.
90 The first card's ports will be installed from sr0. The numbering of the
91 next card will continue where the first stopped, eg. if the first card
92 is a two port card it will use sr0 and sr1. The next card will then
95 The card only supports IRQ 3, 4, 5, 7, 10, 11, 12 and 15.
97 The iomem area is a 16Kb block and must start at a 16Kb boundary.
99 If the kernel is compiled with
100 .Cd "options NETGRAPH"
101 then the sppp and Cisco HDLC modes are disabled (and the sppp driver
102 is unneeded), and this driver functions as a
104 node with a single hook named
106 Connecting to this hook enables the transmission of raw HDLC frames.
107 The node will have the same name as the device with ``sync_''
111 .Bl -tag -width ".Pa /sys/dev/netif/sr/if_sr_pci.c" -compact
112 .It Pa /sys/dev/netif/sr/if_sr.c
113 .It Pa /sys/dev/netif/sr/if_sr.h
114 .It Pa /sys/dev/netif/sr/if_sr_pci.c
115 .It Pa /sys/dev/netif/sr/if_srregs.h
119 .It "sr%d: Warning illegal interrupt %d."
120 The card cannot use the specified interrupt.
121 Choose a different one.
132 device driver was written by
133 .An John Hay Aq jhay@FreeBSD.org .
135 Netgraph support was added by
136 .An Julian Elischer Aq julian@FreeBSD.org .
138 At the moment only the X.21 interface is tested.
140 may need tweaks to the clock selection code.
142 The code can probably stand some optimizing.