Jan Krupa

In the last few days I was solving problem with accessing EEPROM in Atheros cards in case there is checksum error when loading MadWifi + original Atheros HAL.

After few hours of experiments I found working solution provided by madwifi-old driver in combination with OpenHAL (from ath-driver.org), which is open-source implementation of Atheros HAL (not yet finished). Here are few notes how to get these things to work.

First you need to checkout madwifi-old driver from SVN.

svn checkout http://svn.madwifi.org/…/madwifi-old -r 1142 madwifi

And fix bug in net80211/ieee80211_ra­diotap.h – remove ending „)“ on line 175.

Original line:

#if !defined(__KER­NEL__) && !defined(_KERNEL))

After patching

#if !defined(__KER­NEL__) && !defined(_KERNEL)

Then you need to download OpenHAL.

git clone rsync://rsync.ath-driver.org/gnu­monks_users/mb/o­penhal.git ./openhal

When you've got patched madwifi-old and OpenHAL, you need to move openhal directory to madwifi-old directory structure and do some changes in Makefile.inc.

Change these lines in Makefile.inc:

HAL=${obj}/${DEP­TH}/hal

ATH_HAL=${DEP­TH}/ath_hal

Into these:

HAL=${obj}/${DEP­TH}/openhal

ATH_HAL=${DEP­TH}/openhal

If you want unlimited channel availability, you need to do this change to openhal/opt_ah.h (be carefull when using this – you can break laws in your country very easy).

Before change:

#define SUPERCHANNEL 0

After change:

#define SUPERCHANNEL 1

And then usual make, make install and modprobe ath_pci. I recommend to read opehal/README since there are some limitations when using OpenHAL.

UPDATE: There are new webpages for OpenHAL on MadWifi website Wiki.

This entry was posted on Saturday, January 13th, 2007 at 2:22 pm and is filed under EN, WiFi.