编译安装3945驱动

编译安装3945驱动

By JonsenElizee

2009-12-28

第一步：编译、安装概要... 1

第二步：取得源代码和固件文件... 2

第三步：安装驱动前，判定内核是否支持... 2

第四步：配置内核编译参数... 3

第五步：编译驱动程序... 4

第六步：快速安装驱动... 5

第七步：安装MICROCODE. 7

第八步：加载驱动... 8

Intel Wireless Link Wifi (iwlwifi) driver for Linux* in support of:

Intel(R) Wireless WiFi Link 4965AGN

Intel(R) PRO/Wireless 3945ABG/BG Network Connection Adapter

Version: 1.2.25

Date : February 04, 2008

第一步：编译、安装概要

BUILD/INSTALLATION OVERVIEW

-----------------------------------------------

Installation of the current Intel PRO/Wireless 3945ABG Network Connection

driver for Linux involves several steps:

1) Get the iwlwifi source and microcode. See:

http://intellinuxwireless.org/?p=iwlwifi

2) Get mac80211 subsystem. Follow its README for installation

steps. See:

http://intellinuxwireless.org/?p=mac80211

3) Check for certain capabilities in your kernel, and rebuild the kernel

if necessary.

4) Build and install the kernel with mac80211 kernel.

5) Build and install the current iwlwifi module.

6) Download and install current microcode.

7) Read README.iwlwifi for much helpful information on how to use the

Intel PRO/Wireless 3945ABG Network Connection driver for Linux.

第二步：取得源代码和固件文件

GETTING THE SOURCE AND FIRMWARE

-----------------------------------------------

You can get the latest driver source code tarball and microcode from:

http://intellinuxwireless.org/iwlwifi

You must also obtain and install the mac80211 subsystem:

http://intellinuxwireless.org/mac80211

Each package contains installation steps on how to install the files

onto your system. You'll need to unpack the tarballs and then you

can view the INSTALL files. (Below example is for 3945, you should be

able to do the same for 4965):

% tar xzvf iwlwifi-1.2.25.tgz

% tar xzvf iwlwifi-3945-ucode-2.14.1.5.tgz

% less iwlwifi-1.2.25/INSTALL

% less iwlwifi-3945-ucode-2.14.1.5/INSTALL

第三步：安装驱动前，判定内核是否支持

KERNEL REQUIREMENTS - 2.6.18+

-----------------------------------------------

The Intel PRO/Wireless 3945ABG Network Connection driver for Linux is

currently maintained only for 2.6.18+ versions of the Linux kernel,

but may work in older versions. We try (when possible) to provide

backward compatibility patches to the driver to keep it working for as

long as possible with legacy kernels.

NOTE: The mac80211 subsystem must be installed before installing the iwlwifi driver.

See the HOWTO-mac80211 for information on installing mac80211.

You can tell if you have the mac80211 subsystem installed by running:

% modprobe mac80211

If it returns no errors, and running lsmod shows the mac80211 module is loaded.

% lsmod | grep mac80211

第四步：配置内核编译参数

KERNEL REQUIREMENTS - Configuration

如果探测到mac80211正确加载则跳过本节

-----------------------------------------------

Your kernel must be configured and compiled to provide certain capabilities

needed by the mac80211 and iwlwifi source files.

You can verify that your running kernel is configured properly by

searching the following file for the #define entries described below:

/lib/modules/$(uname -r)/build/include/linux/autoconf.h

If you need to change anything in your kernel configuration (e.g. using

make menuconfig), make sure that you also rebuild, install, and reboot to the

new kernel image before proceding with your iwlwifi driver upgrade. For help

or instructions on configuring and building the kernel, please consult the

documentation contained in your distribution.

MAKE SURE THAT THE FOLLOWING CAPABILITIES ARE ENABLED:

~~~~~~~~~~~~~~~~~~~~~~~~~~~

#define CONFIG_FW_LOADER 1

~~~~~~~~~~~~~~~~~~~~~~~~~~~

The driver loads the microcode image via the Linux firmware hotplug

capability (see later section on loading microcode). This is enabled

via menuconfig:

Device Drivers ->

Generic Driver Options ->

Hotplug firmware loading support

~~~~~~~~~~~~~~~~~~~~~~~~~~~

#define CONFIG_MAC80211 1

~~~~~~~~~~~~~~~~~~~~~~~~~~~

The driver requires the mac80211 subsystem be enabled in your kernel.

This is enabled via menuconfig:

Networking ->

Generic IEEE 802.11 Networking Stack (mac80211)

配置好内核编译参数后要重新编译内核，具体编译方法请参考www.google.com

第五步：编译驱动程序

BUILDING EXTERNAL (outside kernel source tree)

-----------------------------------------------

Unpack the iwlwifi-1.2.25.tgz archive:

% tar xzvf iwlwifi-1.2.25.tgz

% cd iwlwifi-1.2.25

The driver package contains a Makefile that can be used for building the

driver outside of the kernel tree. To build it for the currently running

kernel, simply type:

% make <--- You may need to run this as root

To build it for a different kernel than the running one, use the KSRC

parameter:

% make KSRC=/path/to/kernel

If you wish to install the modules into your currently running kernel you can

do so via:

# make install <--- You need to run this as root

If you wish to install the modules into other place, you can do so via:

# make install KMISC=/path/to/install <--- You need to run as root

第六步：快速安装驱动

QUICK INSTALL STEPS

-----------------------------------------------

The following provides steps that can be used to manually install and

load the driver.

Lines beginning with % can be run as any user. Lines beginning with #

must be run as root.

First, you build and install the mac80211 subsystem. See:

http://intellinuxwireless.org/mac80211

After you download and patch the tree you need to build the kernel,

making sure all options under mac80211 are enabled.

Once the mac80211 kernel is installed and running, you build the

iwlwifi.ko module:

% tar xzvf iwlwifi-1.2.25.tgz

% cd iwlwifi-1.2.25

% make

Now you install the firmware. First, determine where to install the

file. You can look in the hotplug script '/etc/hotplug/firmware.agent'

to determine which directory FIRMWARE_DIR is set to when the script

runs. The following command will determine that for you:

% DIR=$(sed -ne "s:^FIRMWARE_DIR=\([^, ]*\).*:\1:p" \

/etc/hotplug/firmware.agent)

NOTE: 'DIR' above typically works out to /lib/firmware.

To see what the above command found, type:

% echo

Now you can fetch and install the uCode (below example is for 3945,

you should be able to do the same for 4965):

% wget http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-3945-ucode-2.14.1.5.tgz .

% tar xzvf iwlwifi-3945-ucode-2.14.1.5.tgz

% less iwlwifi-3945-ucode-2.14.1.5/LICENSE.iwlwifi-3945-ucode

% less iwlwifi-3945-ucode-2.14.1.5/README.iwlwifi-3945-ucode

% cp iwlwifi-3945-ucode-2.14.1.5/iwlwifi-3945.ucode $DIR

And now you can try to load the module, first clearing the kernel log:

% ./load debug=0

Finally you can check to see if things worked:

% ifconfig wlan0 up

% iwconfig wlan0

You should see something like:

wlan0 unassociated ESSID:off/any

Mode:Managed Channel=0 Access Point: 00:00:00:00:00:00

Bit Rate=0 kb/s Tx-Power=20 dBm

RTS thr:off Fragment thr:off

Encryption key:off

Power Management:off

Link Quality:0 Signal level:0 Noise level:0

Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0

Tx excessive retries:0 Invalid misc:0 Missed beacon:0

And now you are ready to go.

First, find your AP:

% iwlist scan

Configure to use AP using iwconfig:

% iwconfig wlan0 channel <channel>

% iwconfig wlan0 key <key>

% iwconfig wlan0 essid <name>

% iwconfig wlan0 ap <mac>

wlan0 IEEE 802.11g ESSID:"......."

Mode:Managed Frequency:..... Access Point: ..:..:..:..:..:..

Bit Rate=54 Mb/s Tx-Power=20 dBm

RTS thr:off Fragment thr:off

Encryption key:....-....-.. Security mode:open

Power Management:off

Link Quality=98/100 Signal level=-53 dBm Noise level=-81 dBm

Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0

Tx excessive retries:0 Invalid misc:0 Missed beacon:0

The specifics of how to bring up the interface is heavily dependent on

the specific distribution you are using from here on out.

If things don't work, try loading the driver with the debug level

turned, retry the operation, and check the kernel log:

% ./load debug=0x43fff

< misc. commands >

% dmesg -c | less -S

INSTALLING IN YOUR LINUX DISTRIBUTION

-----------------------------------------------

Since each distribution is different, you can not cover all of the steps that

may be required to install and configure your device for the particular

distribution you are using.

Please refer to your distribution's documentation for information on how

to configure a wireless network driver within your environment.

第七步：安装MICROCODE

INSTALLING MICROCODE

-----------------------------------------------

Before you can load the driver, you need the microcode image. You can find

instructions for obtaining the microcode by going to:

http://intellinuxwireless.org/?p=iwlwifi&n=downloads

(Below example is for 3945, you should be able to do the same for 4965.)

Once you have the microcode archive, untar it:

% tar xzvf iwlwifi-3945-ucode-2.14.1.5.tgz

This will create a new directory. In it you should find three files:

LICENSE.iwlwifi-3945-ucode A copy of the microcode license

README.iwlwifi-3945-ucode Information about the microcode

iwlwifi-3945.ucode Binary microcode file

You need to place the iwlwifi-3945.ucode file into the hotplug firmware

directory, e.g. /usr/lib/hotplug/firmware/ or /lib/firmware/. Check the

contents of the /etc/hotplug/firmware.agent to determine the specific location

for your distribution. Most newer systems default to /lib/firmware.

If you do not have /etc/hotplug/firmware.agent, then you need to upgrade your

hotplug scripts to something later than 2003_10_07. You can obtain the latest

hotplug scripts via the following link (look for hotplug,

not firmwarehotplug):

http://sourceforge.net/project/showfiles.php?group_id=17679

Also, make sure that your kernel supports the hotplug firmware loader.

See the section above, KERNEL REQUIREMENTS -- Configuration, on

CONFIG_FW_LOADER .

NOTE: Loading this microcode image will not affect the hardware in any other

operating systems you may boot. Each OS keeps its own copy of the microcode,

and loads its own copy onto the hardware each time the OS initializes the

card.

第八步：加载驱动

LOADING THE DRIVER

-----------------------------------------------

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