1 2NOTE 3---- 4 5This document was contributed by Cirrus Logic for kernel 2.2.5. This version 6has been updated for 2.3.48 by Andrew Morton. 7 8Cirrus make a copy of this driver available at their website, as 9described below. In general, you should use the driver version which 10comes with your Linux distribution. 11 12 13 14CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS 15Linux Network Interface Driver ver. 2.00 <kernel 2.3.48> 16=============================================================================== 17 18 19TABLE OF CONTENTS 20 211.0 CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS 22 1.1 Product Overview 23 1.2 Driver Description 24 1.2.1 Driver Name 25 1.2.2 File in the Driver Package 26 1.3 System Requirements 27 1.4 Licensing Information 28 292.0 ADAPTER INSTALLATION and CONFIGURATION 30 2.1 CS8900-based Adapter Configuration 31 2.2 CS8920-based Adapter Configuration 32 333.0 LOADING THE DRIVER AS A MODULE 34 354.0 COMPILING THE DRIVER 36 4.1 Compiling the Driver as a Loadable Module 37 4.2 Compiling the driver to support memory mode 38 4.3 Compiling the driver to support Rx DMA 39 4.4 Compiling the Driver into the Kernel 40 415.0 TESTING AND TROUBLESHOOTING 42 5.1 Known Defects and Limitations 43 5.2 Testing the Adapter 44 5.2.1 Diagnostic Self-Test 45 5.2.2 Diagnostic Network Test 46 5.3 Using the Adapter's LEDs 47 5.4 Resolving I/O Conflicts 48 496.0 TECHNICAL SUPPORT 50 6.1 Contacting Cirrus Logic's Technical Support 51 6.2 Information Required Before Contacting Technical Support 52 6.3 Obtaining the Latest Driver Version 53 6.4 Current maintainer 54 6.5 Kernel boot parameters 55 56 571.0 CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS 58=============================================================================== 59 60 611.1 PRODUCT OVERVIEW 62 63The CS8900-based ISA Ethernet Adapters from Cirrus Logic follow 64IEEE 802.3 standards and support half or full-duplex operation in ISA bus 65computers on 10 Mbps Ethernet networks. The adapters are designed for operation 66in 16-bit ISA or EISA bus expansion slots and are available in 6710BaseT-only or 3-media configurations (10BaseT, 10Base2, and AUI for 10Base-5 68or fiber networks). 69 70CS8920-based adapters are similar to the CS8900-based adapter with additional 71features for Plug and Play (PnP) support and Wakeup Frame recognition. As 72such, the configuration procedures differ somewhat between the two types of 73adapters. Refer to the "Adapter Configuration" section for details on 74configuring both types of adapters. 75 76 771.2 DRIVER DESCRIPTION 78 79The CS8900/CS8920 Ethernet Adapter driver for Linux supports the Linux 80v2.3.48 or greater kernel. It can be compiled directly into the kernel 81or loaded at run-time as a device driver module. 82 831.2.1 Driver Name: cs89x0 84 851.2.2 Files in the Driver Archive: 86 87The files in the driver at Cirrus' website include: 88 89 readme.txt - this file 90 build - batch file to compile cs89x0.c. 91 cs89x0.c - driver C code 92 cs89x0.h - driver header file 93 cs89x0.o - pre-compiled module (for v2.2.5 kernel) 94 config/Config.in - sample file to include cs89x0 driver in the kernel. 95 config/Makefile - sample file to include cs89x0 driver in the kernel. 96 config/Space.c - sample file to include cs89x0 driver in the kernel. 97 98 99 1001.3 SYSTEM REQUIREMENTS 101 102The following hardware is required: 103 104 * Cirrus Logic LAN (CS8900/20-based) Ethernet ISA Adapter 105 106 * IBM or IBM-compatible PC with: 107 * An 80386 or higher processor 108 * 16 bytes of contiguous IO space available between 210h - 370h 109 * One available IRQ (5,10,11,or 12 for the CS8900, 3-7,9-15 for CS8920). 110 111 * Appropriate cable (and connector for AUI, 10BASE-2) for your network 112 topology. 113 114The following software is required: 115 116* LINUX kernel version 2.3.48 or higher 117 118 * CS8900/20 Setup Utility (DOS-based) 119 120 * LINUX kernel sources for your kernel (if compiling into kernel) 121 122 * GNU Toolkit (gcc and make) v2.6 or above (if compiling into kernel 123 or a module) 124 125 126 1271.4 LICENSING INFORMATION 128 129This program is free software; you can redistribute it and/or modify it under 130the terms of the GNU General Public License as published by the Free Software 131Foundation, version 1. 132 133This program is distributed in the hope that it will be useful, but WITHOUT 134ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 135FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 136more details. 137 138For a full copy of the GNU General Public License, write to the Free Software 139Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 140 141 142 1432.0 ADAPTER INSTALLATION and CONFIGURATION 144=============================================================================== 145 146Both the CS8900 and CS8920-based adapters can be configured using parameters 147stored in an on-board EEPROM. You must use the DOS-based CS8900/20 Setup 148Utility if you want to change the adapter's configuration in EEPROM. 149 150When loading the driver as a module, you can specify many of the adapter's 151configuration parameters on the command-line to override the EEPROM's settings 152or for interface configuration when an EEPROM is not used. (CS8920-based 153adapters must use an EEPROM.) See Section 3.0 LOADING THE DRIVER AS A MODULE. 154 155Since the CS8900/20 Setup Utility is a DOS-based application, you must install 156and configure the adapter in a DOS-based system using the CS8900/20 Setup 157Utility before installation in the target LINUX system. (Not required if 158installing a CS8900-based adapter and the default configuration is acceptable.) 159 160 1612.1 CS8900-BASED ADAPTER CONFIGURATION 162 163CS8900-based adapters shipped from Cirrus Logic have been configured 164with the following "default" settings: 165 166 Operation Mode: Memory Mode 167 IRQ: 10 168 Base I/O Address: 300 169 Memory Base Address: D0000 170 Optimization: DOS Client 171 Transmission Mode: Half-duplex 172 BootProm: None 173 Media Type: Autodetect (3-media cards) or 174 10BASE-T (10BASE-T only adapter) 175 176You should only change the default configuration settings if conflicts with 177another adapter exists. To change the adapter's configuration, run the 178CS8900/20 Setup Utility. 179 180 1812.2 CS8920-BASED ADAPTER CONFIGURATION 182 183CS8920-based adapters are shipped from Cirrus Logic configured as Plug 184and Play (PnP) enabled. However, since the cs89x0 driver does NOT 185support PnP, you must install the CS8920 adapter in a DOS-based PC and 186run the CS8900/20 Setup Utility to disable PnP and configure the 187adapter before installation in the target Linux system. Failure to do 188this will leave the adapter inactive and the driver will be unable to 189communicate with the adapter. 190 191 192 **************************************************************** 193 * CS8920-BASED ADAPTERS: * 194 * * 195 * CS8920-BASED ADAPTERS ARE PLUG and PLAY ENABLED BY DEFAULT. * 196 * THE CS89X0 DRIVER DOES NOT SUPPORT PnP. THEREFORE, YOU MUST * 197 * RUN THE CS8900/20 SETUP UTILITY TO DISABLE PnP SUPPORT AND * 198 * TO ACTIVATE THE ADAPTER. * 199 **************************************************************** 200 201 202 203 2043.0 LOADING THE DRIVER AS A MODULE 205=============================================================================== 206 207If the driver is compiled as a loadable module, you can load the driver module 208with the 'modprobe' command. Many of the adapter's configuration parameters can 209be specified as command-line arguments to the load command. This facility 210provides a means to override the EEPROM's settings or for interface 211configuration when an EEPROM is not used. 212 213Example: 214 215 insmod cs89x0.o io=0x200 irq=0xA media=aui 216 217This example loads the module and configures the adapter to use an IO port base 218address of 200h, interrupt 10, and use the AUI media connection. The following 219configuration options are available on the command line: 220 221* io=### - specify IO address (200h-360h) 222* irq=## - specify interrupt level 223* use_dma=1 - Enable DMA 224* dma=# - specify dma channel (Driver is compiled to support 225 Rx DMA only) 226* dmasize=# (16 or 64) - DMA size 16K or 64K. Default value is set to 16. 227* media=rj45 - specify media type 228 or media=bnc 229 or media=aui 230 or media=auto 231* duplex=full - specify forced half/full/autonegotiate duplex 232 or duplex=half 233 or duplex=auto 234* debug=# - debug level (only available if the driver was compiled 235 for debugging) 236 237NOTES: 238 239a) If an EEPROM is present, any specified command-line parameter 240 will override the corresponding configuration value stored in 241 EEPROM. 242 243b) The "io" parameter must be specified on the command-line. 244 245c) The driver's hardware probe routine is designed to avoid 246 writing to I/O space until it knows that there is a cs89x0 247 card at the written addresses. This could cause problems 248 with device probing. To avoid this behaviour, add one 249 to the `io=' module parameter. This doesn't actually change 250 the I/O address, but it is a flag to tell the driver 251 to partially initialise the hardware before trying to 252 identify the card. This could be dangerous if you are 253 not sure that there is a cs89x0 card at the provided address. 254 255 For example, to scan for an adapter located at IO base 0x300, 256 specify an IO address of 0x301. 257 258d) The "duplex=auto" parameter is only supported for the CS8920. 259 260e) The minimum command-line configuration required if an EEPROM is 261 not present is: 262 263 io 264 irq 265 media type (no autodetect) 266 267f) The following additional parameters are CS89XX defaults (values 268 used with no EEPROM or command-line argument). 269 270 * DMA Burst = enabled 271 * IOCHRDY Enabled = enabled 272 * UseSA = enabled 273 * CS8900 defaults to half-duplex if not specified on command-line 274 * CS8920 defaults to autoneg if not specified on command-line 275 * Use reset defaults for other config parameters 276 * dma_mode = 0 277 278g) You can use ifconfig to set the adapter's Ethernet address. 279 280h) Many Linux distributions use the 'modprobe' command to load 281 modules. This program uses the '/etc/conf.modules' file to 282 determine configuration information which is passed to a driver 283 module when it is loaded. All the configuration options which are 284 described above may be placed within /etc/conf.modules. 285 286 For example: 287 288 > cat /etc/conf.modules 289 ... 290 alias eth0 cs89x0 291 options cs89x0 io=0x0200 dma=5 use_dma=1 292 ... 293 294 In this example we are telling the module system that the 295 ethernet driver for this machine should use the cs89x0 driver. We 296 are asking 'modprobe' to pass the 'io', 'dma' and 'use_dma' 297 arguments to the driver when it is loaded. 298 299i) Cirrus recommend that the cs89x0 use the ISA DMA channels 5, 6 or 300 7. You will probably find that other DMA channels will not work. 301 302j) The cs89x0 supports DMA for receiving only. DMA mode is 303 significantly more efficient. Flooding a 400 MHz Celeron machine 304 with large ping packets consumes 82% of its CPU capacity in non-DMA 305 mode. With DMA this is reduced to 45%. 306 307k) If your Linux kernel was compiled with inbuilt plug-and-play 308 support you will be able to find information about the cs89x0 card 309 with the command 310 311 cat /proc/isapnp 312 313l) If during DMA operation you find erratic behavior or network data 314 corruption you should use your PC's BIOS to slow the EISA bus clock. 315 316m) If the cs89x0 driver is compiled directly into the kernel 317 (non-modular) then its I/O address is automatically determined by 318 ISA bus probing. The IRQ number, media options, etc are determined 319 from the card's EEPROM. 320 321n) If the cs89x0 driver is compiled directly into the kernel, DMA 322 mode may be selected by providing the kernel with a boot option 323 'cs89x0_dma=N' where 'N' is the desired DMA channel number (5, 6 or 7). 324 325 Kernel boot options may be provided on the LILO command line: 326 327 LILO boot: linux cs89x0_dma=5 328 329 or they may be placed in /etc/lilo.conf: 330 331 image=/boot/bzImage-2.3.48 332 append="cs89x0_dma=5" 333 label=linux 334 root=/dev/hda5 335 read-only 336 337 The DMA Rx buffer size is hardwired to 16 kbytes in this mode. 338 (64k mode is not available). 339 340 3414.0 COMPILING THE DRIVER 342=============================================================================== 343 344The cs89x0 driver can be compiled directly into the kernel or compiled into 345a loadable device driver module. 346 347 3484.1 COMPILING THE DRIVER AS A LOADABLE MODULE 349 350To compile the driver into a loadable module, use the following command 351(single command line, without quotes): 352 353"gcc -D__KERNEL__ -I/usr/src/linux/include -I/usr/src/linux/net/inet -Wall 354-Wstrict-prototypes -O2 -fomit-frame-pointer -DMODULE -DCONFIG_MODVERSIONS 355-c cs89x0.c" 356 3574.2 COMPILING THE DRIVER TO SUPPORT MEMORY MODE 358 359Support for memory mode was not carried over into the 2.3 series kernels. 360 3614.3 COMPILING THE DRIVER TO SUPPORT Rx DMA 362 363The compile-time optionality for DMA was removed in the 2.3 kernel 364series. DMA support is now unconditionally part of the driver. It is 365enabled by the 'use_dma=1' module option. 366 3674.4 COMPILING THE DRIVER INTO THE KERNEL 368 369If your Linux distribution already has support for the cs89x0 driver 370then simply copy the source file to the /usr/src/linux/drivers/net 371directory to replace the original ones and run the make utility to 372rebuild the kernel. See Step 3 for rebuilding the kernel. 373 374If your Linux does not include the cs89x0 driver, you need to edit three 375configuration files, copy the source file to the /usr/src/linux/drivers/net 376directory, and then run the make utility to rebuild the kernel. 377 3781. Edit the following configuration files by adding the statements as 379indicated. (When possible, try to locate the added text to the section of the 380file containing similar statements). 381 382 383a.) In /usr/src/linux/drivers/net/Config.in, add: 384 385tristate 'CS89x0 support' CONFIG_CS89x0 386 387Example: 388 389 if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then 390 tristate 'ICL EtherTeam 16i/32 support' CONFIG_ETH16I 391 fi 392 393 tristate 'CS89x0 support' CONFIG_CS89x0 394 395 tristate 'NE2000/NE1000 support' CONFIG_NE2000 396 if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then 397 tristate 'NI5210 support' CONFIG_NI52 398 399 400b.) In /usr/src/linux/drivers/net/Makefile, add the following lines: 401 402ifeq ($(CONFIG_CS89x0),y) 403L_OBJS += cs89x0.o 404else 405 ifeq ($(CONFIG_CS89x0),m) 406 M_OBJS += cs89x0.o 407 endif 408endif 409 410 411c.) In /linux/drivers/net/Space.c file, add the line: 412 413extern int cs89x0_probe(struct device *dev); 414 415 416Example: 417 418 extern int ultra_probe(struct device *dev); 419 extern int wd_probe(struct device *dev); 420 extern int el2_probe(struct device *dev); 421 422 extern int cs89x0_probe(struct device *dev); 423 424 extern int ne_probe(struct device *dev); 425 extern int hp_probe(struct device *dev); 426 extern int hp_plus_probe(struct device *dev); 427 428 429Also add: 430 431 #ifdef CONFIG_CS89x0 432 { cs89x0_probe,0 }, 433 #endif 434 435 4362.) Copy the driver source files (cs89x0.c and cs89x0.h) 437into the /usr/src/linux/drivers/net directory. 438 439 4403.) Go to /usr/src/linux directory and run 'make config' followed by 'make' 441(or make bzImage) to rebuild the kernel. 442 4434.) Use the DOS 'setup' utility to disable plug and play on the NIC. 444 445 4465.0 TESTING AND TROUBLESHOOTING 447=============================================================================== 448 4495.1 KNOWN DEFECTS and LIMITATIONS 450 451Refer to the RELEASE.TXT file distributed as part of this archive for a list of 452known defects, driver limitations, and work arounds. 453 454 4555.2 TESTING THE ADAPTER 456 457Once the adapter has been installed and configured, the diagnostic option of 458the CS8900/20 Setup Utility can be used to test the functionality of the 459adapter and its network connection. Use the diagnostics 'Self Test' option to 460test the functionality of the adapter with the hardware configuration you have 461assigned. You can use the diagnostics 'Network Test' to test the ability of the 462adapter to communicate across the Ethernet with another PC equipped with a 463CS8900/20-based adapter card (it must also be running the CS8900/20 Setup 464Utility). 465 466 NOTE: The Setup Utility's diagnostics are designed to run in a 467 DOS-only operating system environment. DO NOT run the diagnostics 468 from a DOS or command prompt session under Windows 95, Windows NT, 469 OS/2, or other operating system. 470 471To run the diagnostics tests on the CS8900/20 adapter: 472 473 1.) Boot DOS on the PC and start the CS8900/20 Setup Utility. 474 475 2.) The adapter's current configuration is displayed. Hit the ENTER key to 476 get to the main menu. 477 478 4.) Select 'Diagnostics' (ALT-G) from the main menu. 479 * Select 'Self-Test' to test the adapter's basic functionality. 480 * Select 'Network Test' to test the network connection and cabling. 481 482 4835.2.1 DIAGNOSTIC SELF-TEST 484 485The diagnostic self-test checks the adapter's basic functionality as well as 486its ability to communicate across the ISA bus based on the system resources 487assigned during hardware configuration. The following tests are performed: 488 489 * IO Register Read/Write Test 490 The IO Register Read/Write test insures that the CS8900/20 can be 491 accessed in IO mode, and that the IO base address is correct. 492 493 * Shared Memory Test 494 The Shared Memory test insures the CS8900/20 can be accessed in memory 495 mode and that the range of memory addresses assigned does not conflict 496 with other devices in the system. 497 498 * Interrupt Test 499 The Interrupt test insures there are no conflicts with the assigned IRQ 500 signal. 501 502 * EEPROM Test 503 The EEPROM test insures the EEPROM can be read. 504 505 * Chip RAM Test 506 The Chip RAM test insures the 4K of memory internal to the CS8900/20 is 507 working properly. 508 509 * Internal Loop-back Test 510 The Internal Loop Back test insures the adapter's transmitter and 511 receiver are operating properly. If this test fails, make sure the 512 adapter's cable is connected to the network (check for LED activity for 513 example). 514 515 * Boot PROM Test 516 The Boot PROM test insures the Boot PROM is present, and can be read. 517 Failure indicates the Boot PROM was not successfully read due to a 518 hardware problem or due to a conflicts on the Boot PROM address 519 assignment. (Test only applies if the adapter is configured to use the 520 Boot PROM option.) 521 522Failure of a test item indicates a possible system resource conflict with 523another device on the ISA bus. In this case, you should use the Manual Setup 524option to reconfigure the adapter by selecting a different value for the system 525resource that failed. 526 527 5285.2.2 DIAGNOSTIC NETWORK TEST 529 530The Diagnostic Network Test verifies a working network connection by 531transferring data between two CS8900/20 adapters installed in different PCs 532on the same network. (Note: the diagnostic network test should not be run 533between two nodes across a router.) 534 535This test requires that each of the two PCs have a CS8900/20-based adapter 536installed and have the CS8900/20 Setup Utility running. The first PC is 537configured as a Responder and the other PC is configured as an Initiator. 538Once the Initiator is started, it sends data frames to the Responder which 539returns the frames to the Initiator. 540 541The total number of frames received and transmitted are displayed on the 542Initiator's display, along with a count of the number of frames received and 543transmitted OK or in error. The test can be terminated anytime by the user at 544either PC. 545 546To setup the Diagnostic Network Test: 547 548 1.) Select a PC with a CS8900/20-based adapter and a known working network 549 connection to act as the Responder. Run the CS8900/20 Setup Utility 550 and select 'Diagnostics -> Network Test -> Responder' from the main 551 menu. Hit ENTER to start the Responder. 552 553 2.) Return to the PC with the CS8900/20-based adapter you want to test and 554 start the CS8900/20 Setup Utility. 555 556 3.) From the main menu, Select 'Diagnostic -> Network Test -> Initiator'. 557 Hit ENTER to start the test. 558 559You may stop the test on the Initiator at any time while allowing the Responder 560to continue running. In this manner, you can move to additional PCs and test 561them by starting the Initiator on another PC without having to stop/start the 562Responder. 563 564 565 5665.3 USING THE ADAPTER'S LEDs 567 568The 2 and 3-media adapters have two LEDs visible on the back end of the board 569located near the 10Base-T connector. 570 571Link Integrity LED: A "steady" ON of the green LED indicates a valid 10Base-T 572connection. (Only applies to 10Base-T. The green LED has no significance for 573a 10Base-2 or AUI connection.) 574 575TX/RX LED: The yellow LED lights briefly each time the adapter transmits or 576receives data. (The yellow LED will appear to "flicker" on a typical network.) 577 578 5795.4 RESOLVING I/O CONFLICTS 580 581An IO conflict occurs when two or more adapter use the same ISA resource (IO 582address, memory address or IRQ). You can usually detect an IO conflict in one 583of four ways after installing and or configuring the CS8900/20-based adapter: 584 585 1.) The system does not boot properly (or at all). 586 587 2.) The driver cannot communicate with the adapter, reporting an "Adapter 588 not found" error message. 589 590 3.) You cannot connect to the network or the driver will not load. 591 592 4.) If you have configured the adapter to run in memory mode but the driver 593 reports it is using IO mode when loading, this is an indication of a 594 memory address conflict. 595 596If an IO conflict occurs, run the CS8900/20 Setup Utility and perform a 597diagnostic self-test. Normally, the ISA resource in conflict will fail the 598self-test. If so, reconfigure the adapter selecting another choice for the 599resource in conflict. Run the diagnostics again to check for further IO 600conflicts. 601 602In some cases, such as when the PC will not boot, it may be necessary to remove 603the adapter and reconfigure it by installing it in another PC to run the 604CS8900/20 Setup Utility. Once reinstalled in the target system, run the 605diagnostics self-test to ensure the new configuration is free of conflicts 606before loading the driver again. 607 608When manually configuring the adapter, keep in mind the typical ISA system 609resource usage as indicated in the tables below. 610 611I/O Address Device IRQ Device 612----------- -------- --- -------- 613 200-20F Game I/O adapter 3 COM2, Bus Mouse 614 230-23F Bus Mouse 4 COM1 615 270-27F LPT3: third parallel port 5 LPT2 616 2F0-2FF COM2: second serial port 6 Floppy Disk controller 617 320-32F Fixed disk controller 7 LPT1 618 8 Real-time Clock 619 9 EGA/VGA display adapter 620 12 Mouse (PS/2) 621Memory Address Device 13 Math Coprocessor 622-------------- --------------------- 14 Hard Disk controller 623A000-BFFF EGA Graphics Adapter 624A000-C7FF VGA Graphics Adapter 625B000-BFFF Mono Graphics Adapter 626B800-BFFF Color Graphics Adapter 627E000-FFFF AT BIOS 628 629 630 631 6326.0 TECHNICAL SUPPORT 633=============================================================================== 634 6356.1 CONTACTING CIRRUS LOGIC'S TECHNICAL SUPPORT 636 637Cirrus Logic's CS89XX Technical Application Support can be reached at: 638 639Telephone :(800) 888-5016 (from inside U.S. and Canada) 640 :(512) 442-7555 (from outside the U.S. and Canada) 641Fax :(512) 912-3871 642Email :ethernet@crystal.cirrus.com 643WWW :http://www.cirrus.com 644 645 6466.2 INFORMATION REQUIRED BEFORE CONTACTING TECHNICAL SUPPORT 647 648Before contacting Cirrus Logic for technical support, be prepared to provide as 649Much of the following information as possible. 650 6511.) Adapter type (CRD8900, CDB8900, CDB8920, etc.) 652 6532.) Adapter configuration 654 655 * IO Base, Memory Base, IO or memory mode enabled, IRQ, DMA channel 656 * Plug and Play enabled/disabled (CS8920-based adapters only) 657 * Configured for media auto-detect or specific media type (which type). 658 6593.) PC System's Configuration 660 661 * Plug and Play system (yes/no) 662 * BIOS (make and version) 663 * System make and model 664 * CPU (type and speed) 665 * System RAM 666 * SCSI Adapter 667 6684.) Software 669 670 * CS89XX driver and version 671 * Your network operating system and version 672 * Your system's OS version 673 * Version of all protocol support files 674 6755.) Any Error Message displayed. 676 677 678 6796.3 OBTAINING THE LATEST DRIVER VERSION 680 681You can obtain the latest CS89XX drivers and support software from Cirrus Logic's 682Web site. You can also contact Cirrus Logic's Technical Support (email: 683ethernet@crystal.cirrus.com) and request that you be registered for automatic 684software-update notification. 685 686Cirrus Logic maintains a web page at http://www.cirrus.com with the 687latest drivers and technical publications. 688 689 6906.4 Current maintainer 691 692In February 2000 the maintenance of this driver was assumed by Andrew 693Morton. 694 6956.5 Kernel module parameters 696 697For use in embedded environments with no cs89x0 EEPROM, the kernel boot 698parameter `cs89x0_media=' has been implemented. Usage is: 699 700 cs89x0_media=rj45 or 701 cs89x0_media=aui or 702 cs89x0_media=bnc 703 704