1Released 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 204