Patchwork [Lucid] UBUNTU: Added driver fsam7400 kill switch for Fujitsu Siemens Amilo M 7400

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Submitter Manoj Iyer
Date Dec. 8, 2009, 6:24 p.m.
Message ID <alpine.DEB.2.00.0912081221300.3745@hungry>
Download mbox | patch
Permalink /patch/40656/
State Accepted
Delegated to: Andy Whitcroft
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Comments

Manoj Iyer - Dec. 8, 2009, 6:24 p.m.
Added fsam7400 to ubuntu/ current version is 0.5.2.

Test Kernel:
Andy Whitcroft - Dec. 9, 2009, 5:50 p.m.
On Tue, Dec 08, 2009 at 12:24:45PM -0600, Manoj Iyer wrote:
> 
> Added fsam7400 to ubuntu/ current version is 0.5.2.
[...]
>   debian.master/changelog    |    2 +-
>   ubuntu/Kconfig             |    1 +
>   ubuntu/Makefile            |    1 +
>   ubuntu/fsam7400/BOM        |    2 +
>   ubuntu/fsam7400/CHANGELOG  |   34 ++++
>   ubuntu/fsam7400/FILES      |    6 +
>   ubuntu/fsam7400/INSTALL    |  110 +++++++++++++
>   ubuntu/fsam7400/Kconfig    |    4 +
>   ubuntu/fsam7400/LICENSE    |  338 ++++++++++++++++++++++++++++++++++++++
>   ubuntu/fsam7400/Makefile   |   49 ++++++
>   ubuntu/fsam7400/README     |   60 +++++++
>   ubuntu/fsam7400/fsam7400.c |  386 ++++++++++++++++++++++++++++++++++++++++++++

There is already a version of fsam7400 in the tree, in ubuntu/misc.
Actually it seems more sensible to move this to the top level as this is
the only thing in misc.  I will therefore sort out ripping out the old
one.

Thanks.

-apw
Andy Whitcroft - Dec. 9, 2009, 11:15 p.m.
Ok, I've pulled this version into the tree and it should be in the first
upload after the Alpha-1 freeze lifts.

Applied to Lucid.

-apw

Patch

============
http://people.canonical.com/~manjo/lucid/fsam7400/

Git commit:
===========
The following changes since commit 
32d9c7cf3feb08a71caee60c5d2bfff0b9fc4884:
   Manoj Iyer (1):
         UBUNTU: Added driver fsam7400 kill switch for Fujitsu Siemens 
Amilo M 7400

are available in the git repository at:


ssh://zinc.canonical.com/srv/kernel.ubuntu.com/git/manjo/ubuntu-lucid.git 
fsam7400

Changes:
========
From 32d9c7cf3feb08a71caee60c5d2bfff0b9fc4884 Mon Sep 17 00:00:00 2001
From: Manoj Iyer <manoj.iyer@canonical.com>
Date: Tue, 8 Dec 2009 12:10:26 -0600
Subject: [PATCH] UBUNTU: Added driver fsam7400 kill switch for Fujitsu Siemens Amilo M 7400

ExternalDriver: fsam7400
Description: SW RF kill switch for Fujitsu Siemens Amilo M7400/Maxdata
7000DX and compatible hardware.
Url: http://www.iragan.com/linux/fsam7400/
Mask:
Version: 0.5.2

Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
---
  debian.master/changelog    |    2 +-
  ubuntu/Kconfig             |    1 +
  ubuntu/Makefile            |    1 +
  ubuntu/fsam7400/BOM        |    2 +
  ubuntu/fsam7400/CHANGELOG  |   34 ++++
  ubuntu/fsam7400/FILES      |    6 +
  ubuntu/fsam7400/INSTALL    |  110 +++++++++++++
  ubuntu/fsam7400/Kconfig    |    4 +
  ubuntu/fsam7400/LICENSE    |  338 ++++++++++++++++++++++++++++++++++++++
  ubuntu/fsam7400/Makefile   |   49 ++++++
  ubuntu/fsam7400/README     |   60 +++++++
  ubuntu/fsam7400/fsam7400.c |  386 ++++++++++++++++++++++++++++++++++++++++++++
  12 files changed, 992 insertions(+), 1 deletions(-)
  create mode 100644 ubuntu/fsam7400/BOM
  create mode 100644 ubuntu/fsam7400/CHANGELOG
  create mode 100644 ubuntu/fsam7400/FILES
  create mode 100644 ubuntu/fsam7400/INSTALL
  create mode 100644 ubuntu/fsam7400/Kconfig
  create mode 100644 ubuntu/fsam7400/LICENSE
  create mode 100644 ubuntu/fsam7400/Makefile
  create mode 100644 ubuntu/fsam7400/README
  create mode 100644 ubuntu/fsam7400/fsam7400.c

diff --git a/debian.master/changelog b/debian.master/changelog
index f8d90c2..6a84280 100644
--- a/debian.master/changelog
+++ b/debian.master/changelog
@@ -1,4 +1,4 @@ 
-linux (2.6.32-7.10) lucid; urgency=low
+linux (2.6.32-7.10~fsam7400manjo1) lucid; urgency=low

    [ Andy Whitcroft ]

diff --git a/ubuntu/Kconfig b/ubuntu/Kconfig
index 6beb553..934571a 100644
--- a/ubuntu/Kconfig
+++ b/ubuntu/Kconfig
@@ -6,6 +6,7 @@  source "ubuntu/aufs/Kconfig"
  source "ubuntu/compcache/Kconfig"
  source "ubuntu/dm-raid4-5/Kconfig"
  source "ubuntu/drbd/Kconfig"
+source "ubuntu/fsam7400/Kconfig"
  source "ubuntu/iscsitarget/Kconfig"
  source "ubuntu/lenovo-sl-laptop/Kconfig"
  source "ubuntu/lirc/Kconfig"
diff --git a/ubuntu/Makefile b/ubuntu/Makefile
index 60242f0..0dc80ff 100644
--- a/ubuntu/Makefile
+++ b/ubuntu/Makefile
@@ -7,6 +7,7 @@  obj-$(CONFIG_SECURITY_APPARMOR)        += apparmor/
  obj-$(CONFIG_AUFS_FS)		+= aufs/
  obj-$(CONFIG_BLK_DEV_COMPCACHE)	+= compcache/
  obj-$(CONFIG_DM_RAID45)		+= dm-raid4-5/
+obj-$(CONFIG_FSAM7400)		+= fsam7400/
  #obj-$(CONFIG_BLK_DEV_DRBD)	+= drbd/
  #obj-$(CONFIG_SCSI_ISCSITARGET)	+= iscsitarget/
  obj-$(CONFIG_LENOVO_SL_LAPTOP)	+= lenovo-sl-laptop/
diff --git a/ubuntu/fsam7400/BOM b/ubuntu/fsam7400/BOM
new file mode 100644
index 0000000..4bfee23
--- /dev/null
+++ b/ubuntu/fsam7400/BOM
@@ -0,0 +1,2 @@ 
+Downloaded from:	http://www.iragan.com/linux/fsam7400/
+Current Version:	0.5.2 (2008 Nov 22)
diff --git a/ubuntu/fsam7400/CHANGELOG b/ubuntu/fsam7400/CHANGELOG
new file mode 100644
index 0000000..cb17001
--- /dev/null
+++ b/ubuntu/fsam7400/CHANGELOG
@@ -0,0 +1,34 @@ 
+Nov 22 2008 Changes in 0.5.2 by legolas558
+* fixed some missing include files
+
+Sep 22 2006 Changes in 0.5.1
+* Fix: possible null pointer dereference in proc code
+* Fix: module exit code was mistakenly disabled
+
+Sep 22 2006 Changes in 0.5.0
+* fixed compilation problems with kernel 2.6.18
+* debug-output enabling via module parameter
+* hibernation support: reconstruct last radio state on resume
+* disabled autoload option by default
+
+Jul 16 2006 Changes in 0.4.1
+* new Makefile fixing problems with kernel 2.6.17
+* several bug fixes and compiler cleanups
+
+Aug 20 2004 Changes in 0.4.0
+* several bug fixes and compiler cleanups
+* UID/GID for procfs entry selectable via module parameter
+* Autoload support: fsam7400 modprobes and rmmods ipw2100 automatically
+  depending on radio state
+
+Apr 15 2004 Changes in 0.3.0
+* Fix: radio state was not displayed properly
+* some proc improvements
+* finished code for alternative routine address calculation
+* debug-output selectable at compile-time with CONFIG_IPW2100_DEBUG define
+  for smaller module size if no debug is needed ;)
+
+Apr 9 2004 Changes in 0.2.1
+* Initial release
+* Determines if wireless device is enabled by default Bios-settings
+* Auto-off functionality
diff --git a/ubuntu/fsam7400/FILES b/ubuntu/fsam7400/FILES
new file mode 100644
index 0000000..80899bf
--- /dev/null
+++ b/ubuntu/fsam7400/FILES
@@ -0,0 +1,6 @@ 
+CHANGELOG	Recently changes logged
+FILES		This file
+fsam7400.c	The source code, what else... :)
+INSTALL		Installation instructions
+Makefile	Makefile to build, install, uninstall the module
+README		don't forget to read it
diff --git a/ubuntu/fsam7400/INSTALL b/ubuntu/fsam7400/INSTALL
new file mode 100644
index 0000000..352e15b
--- /dev/null
+++ b/ubuntu/fsam7400/INSTALL
@@ -0,0 +1,110 @@ 
+SW RF kill switch for Fujitsu Siemens Amilo M 7400
+Copyright (C) 2006, zwobbl
+For additional information, contact Marcel Naziri <fsam7400@zwobbl.de>
+
+COMPILER REQUIREMENTS
+---------   ------     ----       ---    --       --       -          -
+
+You need to be using GCC v3.0 or higher in order to build the fsam7400 module.
+Using older versions will result in several compilation errors.
+
+
+INSTALLING THE BITS
+------------ -----   -----       ----       ---       --         -
+
+# Unpack the source tarball
+
+% tar xvzf fsam7400-0.x.y.tgz
+% cd fsam7400-0.x.y
+
+Make sure to be root when performing the following operations. Also you must 
+have a kernel source tree installed under /usr/src/linux
+
+# Build the kernel module
+
+% make 
+
+Debug output is enabled by default. This is a good idea if you use the fsam module for 
+the first time, so you get some nice information printed on kernel log. If you don't 
+need the messages anymore, you have to comment out the line CONFIG_IPW2100_DEBUG=y in 
+the Makefile.
+
+# Install the kernel module
+
+% make install
+
+Now you are ready for...
+
+
+LOADING THE DRIVER
+------------ -----   -----       ----       ---       --         -
+
+Also easy to go... :)
+
+% modprobe fsam7400
+
+If you have set "wireless device" enabled in your "Advanced" bios settings of
+your Amilo M 7400 radio should be turned on at this point. So you're done!
+Watch out your kernel log if supported hardware was found. :)
+
+
+RADIO STATE AT LOADING
+
+You can override the wireless bios setting with
+
+% modprobe fsam7400 radio=[0|1]
+
+
+PROC FILESYSTEM
+
+If your hardware is supported by the driver you will get an entry in /proc 
+called driver/wireless/radio which will give you state information by typing
+
+% cat /proc/driver/wireless/radio
+
+You can turn the radio on and off at your will with 
+
+% echo [1|on] > /proc/driver/wireless/radio
+% echo [0|off] > /proc/driver/wireless/radio
+
+The module also recognizes parameters to set the user- and/or group-ID to 
+something other than root, so you don't have to adjust it by hand. 
+Just select your favourite IDs and type
+
+% modprobe fsam7400 uid=1000 gid=500
+
+Note, that /proc/driver/wireless/radio will only be read- and writeable by 
+user & group and only readable by others.
+
+If you want to see debug output on syslog use the following parameter when 
+loading the module 
+
+% modprobe fsam7400 debug=1
+
+
+AUTOMATION FEATURES
+
+By default the driver will turn off the radio automatically short before the 
+module is unloaded. To override this behaviour load the module adding the 
+following parameter
+
+% modprobe fsam7400 autooff=0
+
+Also since 0.4.0 the driver can automatically modprobe the ipw2100 module when
+radio state changes to on and rmmods it when radio is turned off by fsam7400.
+To enable autoload support, use
+
+% modprobe fsam7400 autoload=1
+
+
+HIBERNATION SUPPORT
+
+After hibernation and boot up of the system the wireless radio might be disabled
+again. To revert to the radio state before hibernation just put the following
+in the wakeup script
+
+% echo resume > /proc/driver/wireless/radio
+
+
+
+That's all for now. Have fun with the driver!
diff --git a/ubuntu/fsam7400/Kconfig b/ubuntu/fsam7400/Kconfig
new file mode 100644
index 0000000..b349ca2
--- /dev/null
+++ b/ubuntu/fsam7400/Kconfig
@@ -0,0 +1,4 @@ 
+config FSAM7400
+	tristate "SW RF kill switch for Fujitsu Siemens Amilo M 7400"
+	default m
+	---help---
diff --git a/ubuntu/fsam7400/LICENSE b/ubuntu/fsam7400/LICENSE
new file mode 100644
index 0000000..1fe7297
--- /dev/null
+++ b/ubuntu/fsam7400/LICENSE
@@ -0,0 +1,338 @@ 
+"This software program is licensed subject to the GNU General Public License 
+(GPL). Version 2, June 1991, available at 
+<http://www.fsf.org/copyleft/gpl.html>"
+
+GNU General Public License 
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+exclusion of warranty; and each file should have at least the "copyright" 
+line and a pointer to where the full notice is found. 
+
+one line to give the program's name and an idea of what it does.
+Copyright (C) yyyy  name of author
+
+This program is free software; you can redistribute it and/or modify it 
+under the terms of the GNU General Public License as published by the Free 
+Software Foundation; either version 2 of the License, or (at your option) 
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT 
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 
+Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+Also add information on how to contact you by electronic and paper mail. 
+
+If the program is interactive, make it output a short notice like this when 
+it starts in an interactive mode: 
+
+Gnomovision version 69, Copyright (C) year name of author Gnomovision comes 
+with ABSOLUTELY NO WARRANTY; for details type 'show w'.  This is free 
+software, and you are welcome to redistribute it under certain conditions; 
+type 'show c' for details.
+
+The hypothetical commands 'show w' and 'show c' should show the appropriate 
+parts of the General Public License. Of course, the commands you use may be 
+called something other than 'show w' and 'show c'; they could even be 
+mouse-clicks or menu items--whatever suits your program. 
+
+You should also get your employer (if you work as a programmer) or your 
+school, if any, to sign a "copyright disclaimer" for the program, if 
+necessary. Here is a sample; alter the names: 
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in the program 
+'Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+signature of Ty Coon, 1 April 1989
+Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into 
+proprietary programs. If your program is a subroutine library, you may 
+consider it more useful to permit linking proprietary applications with the 
+library. If this is what you want to do, use the GNU Library General Public 
+License instead of this License.
diff --git a/ubuntu/fsam7400/Makefile b/ubuntu/fsam7400/Makefile
new file mode 100644
index 0000000..b5a3a15
--- /dev/null
+++ b/ubuntu/fsam7400/Makefile
@@ -0,0 +1,49 @@ 
+KERNELSRC?=/lib/modules/`uname -r`/build
+KERNELVERSION=$(shell awk -F\" '/REL/ {print $$2}' $(shell grep -s -l REL $(KERNELSRC)/include/linux/version.h $(KERNELSRC)/include/linux/utsrelease.h))
+KERNELMAJOR=$(shell echo $(KERNELVERSION)|head -c3)
+
+CONFIG_FSAM7400?=m
+obj-$(CONFIG_FSAM7400) += fsam7400.o
+
+EXTRA_CFLAGS+=-c -Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
+INCLUDE=-I$(KERNELSRC)/include
+
+ifeq ($(KERNELMAJOR), 2.6)
+KERNEL26 := 1
+TARGET := fsam7400.ko
+else
+TARGET := fsam7400.o
+endif
+
+SOURCE := fsam7400.c
+
+all: $(TARGET)
+
+help:
+	@echo Possible targets:
+	@echo -e all\\t- default target, builds kernel module
+	@echo -e install\\t- copies module binary to /lib/modules/$(KERNELVERSION)/extra/
+	@echo -e clean\\t- removes all binaries and temporary files
+
+fsam7400.ko: $(SOURCE) 
+	$(MAKE) -C $(KERNELSRC) SUBDIRS=$(PWD) modules
+
+fsam7400.o: $(SOURCE)
+	$(CC) $(INCLUDE) $(EXTRA_CFLAGS) -DDEBUG -DMODVERSIONS -DMODULE -D__KERNEL__ -o $(TARGET) $(SOURCE)
+
+clean:
+	@echo -n "sweeping directory... "
+	@rm -f *~ *.o *.ko .fsam7400* *.mod.c *symvers .tmp_versions/*
+	@if [ -d .tmp_versions ]; then rmdir .tmp_versions; fi
+	@echo "done"
+
+load:	$(TARGET)
+	insmod $(TARGET)
+
+unload:
+	rmmod fsam7400
+
+install: $(TARGET)
+	mkdir -p /lib/modules/$(KERNELVERSION)/extra
+	cp -v $(TARGET) /lib/modules/$(KERNELVERSION)/extra/
+	depmod -a
diff --git a/ubuntu/fsam7400/README b/ubuntu/fsam7400/README
new file mode 100644
index 0000000..d03ef62
--- /dev/null
+++ b/ubuntu/fsam7400/README
@@ -0,0 +1,60 @@ 
+SW RF kill switch for Fujitsu Siemens Amilo M 7400 / Maxdata 7000DX
+and compatible hardware.
+
+Please be sure that CONFIG_CHECK_SIGNATURE=y in your kernel configuration!
+Otherwise this module will not compile.
+
+Nov 22, 2008 - Release 0.5.2
+
+This package, with minor modifications from zwobbl's 0.5.1, was created
+by legolas558.
+
+More information at:
+http://legolas558.iragan.com/fsam7400
+
+Sep 24, 2006 - Release 0.5.1
+------------ -----   -----       ----       ---       --         -
+
+* Fix: possible null pointer dereference in proc code
+
+* Fix: module exit code was mistakenly disabled
+
+
+for prior changes see CHANGELOG
+
+
+TODO
+------------ -----   -----       ----       ---       --         -
+
+* Fix bugs (if there are any ;))
+
+
+------------ -----   -----       ----       ---       --         -
+
+Have a look in INSTALL for further details to get things working!
+
+
+License
+------------ -----   -----       ----       ---       --         -
+
+  Copyright(c) 2006 zwobbl. All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by the Free
+  Software Foundation; either version 2 of the License, or (at your option)
+  any later version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc., 59
+  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+  The full GNU General Public License is included in this distribution in the
+  file called LICENSE.
+
+  Contact Information:
+  Marcel Naziri <fsam7400@zwobbl.de>
diff --git a/ubuntu/fsam7400/fsam7400.c b/ubuntu/fsam7400/fsam7400.c
new file mode 100644
index 0000000..cbc40b8
--- /dev/null
+++ b/ubuntu/fsam7400/fsam7400.c
@@ -0,0 +1,386 @@ 
+/*******************************************************************************
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by the Free
+  Software Foundation; either version 2 of the License, or (at your option)
+  any later version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc., 59
+  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+  The full GNU General Public License is included in this distribution in the
+  file called LICENSE.
+
+  Author:
+  Marcel Naziri <fsam7400@zwobbl.de>
+
+  Based on:
+  pbe5.c by Pedro Ramalhais <pmr09313@students.fct.unl.pt>
+
+  Many thanks to:
+  Pedro Ramalhais for spending several nights with me on IRC
+
+*******************************************************************************/
+
+#ifdef CONFIG_X86
+#include <linux/version.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+#include <linux/moduleparam.h>
+#else
+#include <linux/modversions.h>
+#endif
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/kmod.h>
+#include <linux/io.h>
+#include <asm/uaccess.h>
+
+#define DRV_NAME         "fsam7400"
+#define DRV_VERSION      "0.5.2"
+#define DRV_DESCRIPTION  "SW RF kill switch for Fujitsu Siemens Amilo M 7400 / Maxdata 7000DX"
+#define DRV_COPYRIGHT    "Copyright(c) 2004 zwobbl"
+#define DRV_AUTHOR       "Marcel Naziri"
+#define DRV_LICENSE      "GPL"
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_LICENSE(DRV_LICENSE);
+
+#define RADIO_NONE     0xFFFFFFFF
+#define RADIO_OFF      0x00000000
+#define RADIO_ON       0x00000010
+
+static int radio = RADIO_NONE;
+static int autooff = 1;
+static int autoload = 0;
+static int uid = 0;
+static int gid = 0;
+static int debug = 0;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+module_param(radio, int, 0444);
+module_param(autooff, int, 0444);
+module_param(autoload, int, 0444);
+module_param(uid, int, 0444);
+module_param(gid, int, 0444);
+module_param(debug, int, 0444);
+#else
+MODULE_PARM(radio, "i");
+MODULE_PARM(autooff, "i");
+MODULE_PARM(autoload, "i");
+MODULE_PARM(uid, "i");
+MODULE_PARM(gid, "i");
+MODULE_PARM(debug, "i");
+#endif
+
+MODULE_PARM_DESC(radio, "desired radio state when loading module");
+MODULE_PARM_DESC(autooff, "turns radio off when unloading module (default)");
+MODULE_PARM_DESC(autoload, "load/unloads ipw2100 driver when toggling radio");
+MODULE_PARM_DESC(uid, "user ID for proc entry");
+MODULE_PARM_DESC(gid, "group ID for proc entry");
+MODULE_PARM_DESC(debug, "enables debug output on syslog");
+
+/* some more or less useful macros */
+
+#define DEBUG if (debug)
+#define DEBUG_OUT0(a) DEBUG printk(KERN_INFO DRV_NAME ": " a)
+#define DEBUG_OUT1(a,b) DEBUG printk(KERN_INFO DRV_NAME ": " a,b)
+#define DEBUG_OUT2(a,b,c) DEBUG printk(KERN_INFO DRV_NAME ": " a,b,c)
+#define DEBUG_OUT3(a,b,c,d) DEBUG printk(KERN_INFO DRV_NAME ": " a,b,c,d)
+
+#define ONOFF(x) (x) ? "ON" : "OFF"
+#define RADIO_ONOFF(x) (x) == RADIO_ON ? "ON" : "OFF"
+#define TOUL(x) (unsigned long) (x)
+
+/*
+ * NOTE: These values were obtained from disassembling the wbutton.sys driver
+ * installed in the Fujitsu Siemens Amilo M 7400 laptop. The names were guessed,
+ * so don't rely on them.
+ */
+
+/*** hardware dependant stuff ***/
+
+#define BIOS_CODE_ADDR       0x000F0000
+#define BIOS_CODE_ALT_MASK   0xFFFFC000
+
+#define BIOS_CODE_MAPSIZE      0x010000
+#define BIOS_CODE_ALT_MAPSIZE  0x004000
+
+#define BIOS_MAGIC_COMMAND    0x9610
+#define BIOS_MAGIC_OFF        0x0035
+#define BIOS_MAGIC_ON         0x0135
+#define BIOS_MAGIC_CHECK      0x0235
+
+#define PTR_POSITION  5
+#define ALLIGNED_STEP 0x10
+
+#define BIOS_SIGN_SIZE 4
+static const char bios_sign[] = {
+   0x42, 0x21, 0x55, 0x30
+};
+
+#define WLAN_DISABLED_IN_BIOS  0x01
+#define WLAN_ENABLED_IN_BIOS   0x03
+
+static unsigned long bios_code = 0;
+
+static int fsam_bios_routine(int eax, int ebx)
+{
+   __asm__ __volatile__(
+      "call *%3 \t\n"
+      : "=a"(eax)
+      : "a"(eax), "b"(ebx), "c"(bios_code)
+      );
+   return (eax & 0xFF);
+}
+
+static int fsam_call_bios(int value)
+{
+   if (bios_code) {
+      int command = BIOS_MAGIC_COMMAND;
+      DEBUG_OUT2("bios routine gets parameter eax=%X and ebx=%X\n",
+                  command, value);
+      value = fsam_bios_routine(command, value);
+      DEBUG_OUT1("bios routine results %X\n", value);
+      return value;
+   }
+   return ~0;
+}
+
+/* pointer to mapped memory*/
+static void *mem_code = NULL;
+
+static inline void fsam_unmap_memory(void)
+{
+   bios_code = 0;
+   if (mem_code) {
+      iounmap(mem_code);
+   }
+}
+
+static inline int fsam_map_memory(void)
+{
+   const unsigned long max_offset = BIOS_CODE_MAPSIZE - BIOS_SIGN_SIZE - PTR_POSITION;
+   unsigned long offset;
+   unsigned int addr;
+   mem_code = ioremap(BIOS_CODE_ADDR, BIOS_CODE_MAPSIZE);
+   if (!mem_code)
+      goto fail;
+   DEBUG_OUT3("physical memory %x-%x mapped to virtual address %p\n",
+              BIOS_CODE_ADDR, BIOS_CODE_ADDR+BIOS_CODE_MAPSIZE, mem_code);
+   for ( offset = 0; offset < max_offset; offset += ALLIGNED_STEP )
+      if (check_signature((void*)TOUL(mem_code) + offset, bios_sign, BIOS_SIGN_SIZE))
+         break;
+   if (offset >= max_offset)
+     goto fail;
+   DEBUG_OUT1("bios signature found at offset %lx\n", offset);
+   addr = readl((void*)TOUL(mem_code) + offset + PTR_POSITION);
+   if (addr < BIOS_CODE_ADDR) {
+      DEBUG_OUT0("bios routine out of memory range, "
+                 "doing some new memory mapping...\n");
+      iounmap(mem_code);
+      mem_code = NULL;
+      addr &= BIOS_CODE_ALT_MASK;
+      mem_code = ioremap(addr, BIOS_CODE_ALT_MAPSIZE);
+      if (!mem_code)
+         goto fail;
+      DEBUG_OUT3("physical memory %x-%x mapped to virtual address %p\n",
+                 addr, addr+BIOS_CODE_ALT_MAPSIZE, mem_code);
+      addr &= 0x3FFF;
+   } else
+     addr &= 0xFFFF;
+
+   bios_code = addr + TOUL(mem_code);
+   DEBUG_OUT1("supposed address of bios routine is %lx\n", bios_code);
+   return 1;
+ fail:
+   fsam_unmap_memory();
+   return 0;
+}
+
+/*** ipw2100 loading ***/
+
+static inline void do_ipw2100_loading(int state) 
+{
+  int status;
+  char *mode;
+  char *envp[] = { "HOME=/",
+                   "TERM=linux",
+                   "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
+  if (state == RADIO_ON) {
+    char *argv[] = { "/sbin/modprobe", "-s", "-k", "ipw2100", NULL };
+    mode = "loading";
+    status = call_usermodehelper(argv[0], argv, envp, 1);
+  } else {
+    char *argv[] = { "/sbin/rmmod", "ipw2100", NULL };
+    mode = "removing";
+    status = call_usermodehelper(argv[0], argv, envp, 1);
+  }
+  DEBUG_OUT2("%s of ipw2100 module %s\n", mode, status == 0 ? "successful" : "FAILED");
+}
+
+/*** interface stuff ***/
+
+static void rfkill_set_radio(int value)
+{
+   radio = value == RADIO_ON ? fsam_call_bios(BIOS_MAGIC_ON) :
+                               fsam_call_bios(BIOS_MAGIC_OFF);
+   if (autoload) do_ipw2100_loading(radio);
+}
+
+static inline int rfkill_get_radio(void)
+{
+   return radio;
+}
+
+static inline int rfkill_supported(void)
+{
+   return bios_code != 0;
+}
+
+static inline void rfkill_initialize(void) {
+   fsam_map_memory();
+   if (rfkill_supported()) {
+      radio = radio != RADIO_NONE
+              ? ( radio ? RADIO_ON : RADIO_OFF ) /*module parameter*/
+              : ( fsam_call_bios(BIOS_MAGIC_CHECK) == WLAN_ENABLED_IN_BIOS
+                  ? RADIO_ON : RADIO_OFF );
+   }
+}
+
+static inline void rfkill_uninitialize(void) {
+   fsam_unmap_memory();
+}
+
+/*** proc stuff ***/
+
+static inline int common_proc_set_radio(struct file *file, const char *buffer, 
+                                        unsigned long count, void *data)
+{
+   unsigned long len = 7;
+   char newstate[len];
+   len = count < len ? count : len;
+   if ( copy_from_user(newstate, buffer, len) != 0 )
+     return -EFAULT;
+   if ( (*newstate == '1' || *newstate == '0') &&
+        (count == 1 || isspace(newstate[1])) )
+     rfkill_set_radio(*newstate == '1' ? RADIO_ON : RADIO_OFF);
+   else
+   if ( !strncmp(newstate, "on", 2)  &&
+        (count == 2 || isspace(newstate[2])) )
+     rfkill_set_radio(RADIO_ON);
+   else
+   if ( !strncmp(newstate, "off", 3) &&
+        (count == 3 || isspace(newstate[3])) )
+     rfkill_set_radio(RADIO_OFF);
+   else
+   if ( !strncmp(newstate, "resume", 6) &&
+        (count == 6 || isspace(newstate[6])) )
+     rfkill_set_radio(radio);
+   return count;
+}
+
+static inline int common_proc_get_radio(char *page, char **start, off_t offset,
+                                        int count, int *eof, void *data)
+{
+   int len = snprintf(page, count, DRV_DESCRIPTION ", v" DRV_VERSION "\n"
+                                   "  auto-off is %s, auto-load is %s\n",
+                                   ONOFF(autooff), ONOFF(autoload));
+   len += snprintf(page+len, count-len, "  radio state is %s\n",
+                                        RADIO_ONOFF(rfkill_get_radio()));
+   *eof = 1;
+   return len;
+}
+
+#define PROC_DIR    "driver/wireless"
+#define PROC_RADIO  "radio"
+
+static struct proc_dir_entry *dir_base = NULL;
+
+static inline void common_proc_cleanup(void)
+{
+   if (dir_base) {
+      remove_proc_entry(PROC_RADIO, dir_base);
+      remove_proc_entry(PROC_DIR, NULL);
+      dir_base = NULL;
+   }
+}
+
+static inline int common_proc_init(void)
+{
+   struct proc_dir_entry *ent;
+   int err = 0;
+   dir_base = proc_mkdir(PROC_DIR, NULL);
+   if (dir_base == NULL) {
+      printk(KERN_ERR DRV_NAME ": Unable to initialize /proc/" PROC_DIR "\n");
+      err = -ENOMEM;
+      goto fail;
+   }
+   ent = create_proc_entry(PROC_RADIO,
+                           S_IFREG | S_IRUGO | S_IWUSR | S_IWGRP,
+                           dir_base);
+   if (ent) {
+      ent->uid = uid;
+      ent->gid = gid;
+      ent->read_proc = common_proc_get_radio;
+      ent->write_proc = common_proc_set_radio;
+   } else {
+      printk(KERN_ERR DRV_NAME ": Unable to initialize /proc/"
+                      PROC_DIR "/" PROC_RADIO "\n");
+      err = -ENOMEM;
+      goto fail;
+   }
+   return 0;
+ fail:
+   common_proc_cleanup();
+   return err;
+}
+
+/*** module stuff ***/
+
+static int __init common_init(void)
+{ 
+   printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", v" DRV_VERSION "\n");
+   printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
+   rfkill_initialize();
+   if (rfkill_supported()) {
+      common_proc_init();
+      if (radio != RADIO_NONE)
+         rfkill_set_radio(radio);
+   } else
+      printk(KERN_INFO DRV_NAME ": no supported wireless hardware found\n");
+   return 0;
+}
+
+static void __exit common_exit(void)
+{
+   if (rfkill_supported() && autooff)
+      rfkill_set_radio(RADIO_OFF);
+   common_proc_cleanup();
+   rfkill_uninitialize();
+   printk(KERN_INFO DRV_NAME ": module removed successfully\n");
+}
+
+module_init(common_init);
+module_exit(common_exit);
+
+#else
+#error This driver is only available for X86 architecture
+#endif
+
+/*
+         1         2         3         4         5         6         7
+12345678901234567890123456789012345678901234567890123456789012345678901234567890
+*/