1 Released 1994-06-13
2
3
4 CONTENTS:
5
6 1. Introduction.
7 2. License.
8 3. Files in this release.
9 4. Installation.
10 5. Problems and tuning.
11 6. Using the drivers with earlier releases.
12 7. Acknowledgments.
13
14
15 1. INTRODUCTION.
16
17 This is a set of Ethernet drivers for the D-Link DE-600/DE-620
18 pocket adapters, for the parallel port on a Linux based machine.
19 Some adapter "clones" will also work. Xircom is _not_ a clone...
20 These drivers _can_ be used as loadable modules,
21 and were developed for use on Linux 1.1.13 and above.
22 For use on Linux 1.0.X, or earlier releases, see below.
23
24 I have used these drivers for NFS, ftp, telnet and X-clients on
25 remote machines. Transmissions with ftp seems to work as
26 good as can be expected (i.e. > 80k bytes/sec) from a
27 parallel port...:-) Receive speeds will be about 60-80% of this.
28 Depending on your machine, somewhat higher speeds can be achieved.
29
30 All comments/fixes to Bjorn Ekwall (bj0rn@blox.se).
31
32
33 2. LICENSE.
34
35 This program is free software; you can redistribute it
36 and/or modify it under the terms of the GNU General Public
37 License as published by the Free Software Foundation; either
38 version 2, or (at your option) any later version.
39
40 This program is distributed in the hope that it will be
41 useful, but WITHOUT ANY WARRANTY; without even the implied
42 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
43 PURPOSE. See the GNU General Public License for more
44 details.
45
46 You should have received a copy of the GNU General Public
47 License along with this program; if not, write to the Free
48 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
49 02139, USA.
50
51
52 3. FILES IN THIS RELEASE.
53
54 README.DLINK This file.
55 de600.c The Source (may it be with You :-) for the DE-600
56 de620.c ditto for the DE-620
57 de620.h Macros for de620.c
58
59 If you are upgrading from the d-link tar release, there will
60 also be a "dlink-patches" file that will patch Linux 1.1.18:
61 linux/drivers/net/Makefile
62 linux/drivers/net/CONFIG
63 linux/drivers/net/MODULES
64 linux/drivers/net/Space.c
65 linux/config.in
66 Apply the patch by:
67 "cd /usr/src; patch -p0 < linux/drivers/net/dlink-patches"
68 The old source, "linux/drivers/net/d_link.c", can be removed.
69
70
71 4. INSTALLATION.
72
73 o Get the latest net binaries, according to current net.wisdom.
74
75 o Read the NET-2 and Ethernet HOWTOs and modify your setup.
76
77 o If your parallel port has a strange address or irq,
78 modify "linux/drivers/net/CONFIG" accordingly, or adjust
79 the parameters in the "tuning" section in the sources.
80
81 If you are going to use the drivers as loadable modules, do _not_
82 enable them while doing "make config", but instead make sure that
83 the drivers are included in "linux/drivers/net/MODULES".
84
85 If you are _not_ going to use the driver(s) as loadable modules,
86 but instead have them included in the kernel, remember to enable
87 the drivers while doing "make config".
88
89 o To include networking and DE600/DE620 support in your kernel:
90 # cd /linux
91 (as modules:)
92 # make config (answer yes on CONFIG_NET and CONFIG_INET)
93 (else included in the kernel:)
94 # make config (answer yes on CONFIG _NET, _INET and _DE600 or _DE620)
95 # make clean
96 # make zImage (or whatever magic you usually do)
97
98 o I use lilo to boot multiple kernels, so that I at least
99 can have one working kernel :-). If you do too, append
100 these lines to /etc/lilo/config:
101
102 image = /linux/zImage
103 label = newlinux
104 root = /dev/hda2 (or whatever YOU have...)
105
106 # /etc/lilo/install
107
108 o Do "sync" and reboot the new kernel with a D-Link
109 DE-600/DE-620 pocket adapter connected.
110
111 o The adapter can be configured with ifconfig eth?
112 where the actual number is decided by the kernel
113 when the drivers are initialized.
114
115
116 5. "PROBLEMS" AND TUNING,
117
118 o If you see error messages from the driver, and if the traffic
119 stops on the adapter, try to do "ifconfig" and "route" once
120 more, just as in "rc.inet1". This should take care of most
121 problems, including effects from power loss, or adapters that
122 aren't connected to the printer port in some way or another.
123 You can somewhat change the behaviour by enabling/disabling
124 the macro SHUTDOWN_WHEN_LOST in the "tuning" section.
125 For the DE-600 there is another macro, CHECK_LOST_DE600,
126 that you might want to read about in the "tuning" section.
127
128 o Some machines have trouble handling the parallel port and
129 the adapter at high speed. If you experience problems:
130
131 DE-600:
132 - The adapter is not recognized at boot, i.e. an Ethernet
133 address of 00:80:c8:... is not shown, try to add another
134 "; SLOW_DOWN_IO"
135 at DE600_SLOW_DOWN in the "tuning" section. As a last resort,
136 uncomment: "#define REALLY_SLOW_IO" (see <asm/io.h> for hints).
137
138 - You experience "timeout" messages: first try to add another
139 "; SLOW_DOWN_IO"
140 at DE600_SLOW_DOWN in the "tuning" section, _then_ try to
141 increase the value (original value: 5) at
142 "if (tickssofar < 5)" near line 422.
143
144 DE-620:
145 - Your parallel port might be "sluggish". To cater for
146 this, there are the macros LOWSPEED and READ_DELAY/WRITE_DELAY
147 in the "tuning" section. Your first step should be to enable
148 LOWSPEED, and after that you can "tune" the XXX_DELAY values.
149
150 o If the adapter _is_ recognized at boot but you get messages
151 about "Network Unreachable", then the problem is probably
152 _not_ with the driver. Check your net configuration instead
153 (ifconfig and route) in "rc.inet1".
154
155 o There is some rudimentary support for debugging, look at
156 the source. Use "-DDE600_DEBUG=3" or "-DDE620_DEBUG=3"
157 when compiling, or include it in "linux/drivers/net/CONFIG".
158 IF YOU HAVE PROBLEMS YOU CAN'T SOLVE: PLEASE COMPILE THE DRIVER
159 WITH DEBUGGING ENABLED, AND SEND ME THE RESULTING OUTPUT!
160
161
162 6. USING THE DRIVERS WITH EARLIER RELEASES.
163
164 The later 1.1.X releases of the Linux kernel include some
165 changes in the networking layer (a.k.a. NET3). This affects
166 these drivers in a few places. The hints that follow are
167 _not_ tested by me, since I don't have the disk space to keep
168 all releases on-line.
169 Known needed changes to date:
170 - release patchfile: some patches will fail, but they should
171 be easy to apply "by hand", since they are trivial.
172 (Space.c: d_link_init() is now called de600_probe())
173 - de600.c: change "mark_bh(NET_BH)" to "mark_bh(INET_BH)".
174 - de620.c: (maybe) change the code around "netif_rx(skb);" to be
175 similar to the code around "dev_rint(...)" in de600.c
176
177
178 7. ACKNOWLEDGMENTS.
179
180 These drivers wouldn't have been done without the base
181 (and support) from Ross Biro, and D-Link Systems Inc.
182 The driver relies upon GPL-ed source from D-Link Systems Inc.
183 and from Russel Nelson at Crynwr Software <nelson@crynwr.com>.
184
185 Additional input also from:
186 Donald Becker <becker@super.org>, Alan Cox <A.Cox@swansea.ac.uk>
187 and Fred N. van Kempen <waltje@uWalt.NL.Mugnet.ORG>
188
189 DE-600 alpha release primary victim^H^H^H^H^H^Htester:
190 - Erik Proper <erikp@cs.kun.nl>.
191 Good input also from several users, most notably
192 - Mark Burton <markb@ordern.demon.co.uk>.
193
194 DE-620 alpha release victims^H^H^H^H^H^H^Htesters:
195 - J. Joshua Kopper <kopper@rtsg.mot.com>
196 - Olav Kvittem <Olav.Kvittem@uninett.no>
197 - Germano Caronni <caronni@nessie.cs.id.ethz.ch>
198 - Jeremy Fitzhardinge <jeremy@suite.sw.oz.au>
199
200
201 Happy hacking!
202
203 Bjorn Ekwall == bj0rn@blox.se
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