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无线网卡驱动 固件程序 There are currently 3 "programming generations" of Atheros 802.11 wireless devices (

Linux OpenHAL 20062302
======================
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
 * This is a port of the ar5k hal for atheros device drivers that is         *
 * source-compatible with the Madwifi driver for linux 			     *
 * (before the BSD - HEAD merge).					     *
 *									     *
 * Code ported, modified for combatibility and some bugs were fixed by 	     *
 * Nick "Mick Flemm" Kossifidis (Athens Wireless Metropolitan Network)	     *
 * <mickflemm'at'gmail.com> so ar5k can work propertly on Linux.	     *
 * Currently only the 5212 code has been tested due to lack of hardware.     *
 *									     *
 * Some code from John Bicket's port (roofnet project) was taken, you can    *
 * can find his OpenHAL here -> http://pdos.csail.mit.edu/~jbicket/openhal/  *
 *									     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES  *
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 	     *
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR   *
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    *
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN     *
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF   *
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.            *
\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */


About AR5K
=================
ar5k is a free replacement of the binary-only HAL used by some drivers
for Atheros chipsets. While using a different ABI, it tries to be
source-compatible with the original (non-free) HAL interface.

It is maintained by Reyk Floeter and many others. You can find more 
infos at http://team.vantronix.net/ar5k/ or inside ar5k's source.

The ar5k hal maintained at OpenBSD
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/ic/#dirlist


About channels and regulatory domains
=====================================

Regulatory domain restrictions are enabled by default to follow ETSI and FCC standards.
If you want to be legal you shouldn't disable regdomains, althow if you want to
experiment etc there are 2 ways you can override regdomains:

a) Change SUPERCHANNEL to 1 (opt_ah.h)
b) Change your card's regulatory domain (EEPROM) to 0x00

WARNING: Whatever you do with your hardware is YOUR resposibility, don't blame the developers
if you get caught using your hardware outside legal ranges etc, you 've been warned...

The goal of this project is to create an open-source free alternative to binary HAL from Atheros, 
NOT to allow more channels/frequencies etc.


About AWMN
==========
Athens Wireless Metropolitan Network is a community radio network based in Athens, Greece. 
Its members are node owners, comprising the Athens metropolitan area network, which at the
moment has roughly 750 active nodes, using 802.11b and 802.11a wireless technology for interconnection.

Its aims include:

    * The development and use of community wireless network throughout the greater Athens area.
    * The development of wireless technology and its implementation.
    * Making the public aware of wireless networks and their use.
    * Educating it's members and the public on the use and benefits of wireless networks.

The Athens Wireless Metropolitan Network
http://www.awmn.net


Building 
========
To build OpenHAL with MadWiFi, place the OpenHAL source directory in the
MadWiFi directory. Edit Makefile.inc and set the following:

HAL=${DEPTH}/<OpenHAL directory>
ATH_HAL=${DEPTH}/<OpenHAL directory>

After that, go to the top directory and build like you normally would. 

WARNING: Don't delete the empty files included (ah_desc.h etc)

Note: Currenty works for MadWiFi versions before HEAD - BSD merge
(that means it works with 07/11/05 snapshot).

Use
=====
You 'll have to set everything propertly for things to work
e.g. you 'll first need to set the mode (a/b/g) using 

iwpriv mode X

Then if you want to use it as an AP you'll have to set channel

iwconfig athX channel x

Txpower currently seems to be buggy, in measurements I did it seems that
tx power differs from -56 to -41 dbm, setting txpower does change txpower
but not in a normal way -needs revision.


TODO
====
* Lot's of tests and fixes.
* Make it combatible with newer versions of MadWiFi (after the merge).
* Test 5210/5211 code.