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--- wlan:conceptronicc22c [2006/11/13 12:38] – 206.161.192.10
+++ wlan:conceptronicc22c [2006/11/13 13:48] (current) – old revision restored andi
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+====== Conceptronic C22C on Linux ======
+{{wlan:concept-front.jpg?250}} {{wlan:concept-back.jpg?200}}
+This cards official name is //Wireless 22Mbps PC Card for Notebooks//. It's an 32Bit Cardbus card with the model name //C22C//.
+Inserting this card immediatly froze my machine after printing these lines:
+  cs: cb_alloc(bus 1): vendor 0x104c, device 0x8400
+  PCI: Enabling device 01:00.0 (0000 -> 0003)
+After disabling the cardmanager (''/etc/init.d/pcmcia-cs stop'') and I was able to insert the card without a crash and to reveal the following info with ''lspci -v'':
+:01:00.0 Network controller: Texas Instruments ACX 100 22Mbps Wireless Interface
+        Subsystem: Texas Instruments: Unknown device 8401
+        Flags: medium devsel, IRQ 9
+        I/O ports at 4000 [size=32]
+        Memory at 10800000 (32-bit, non-prefetchable) [size=4K]
+        Memory at 10810000 (32-bit, non-prefetchable) [size=64K]
+        Capabilities: [40] Power Management version 2
+===== General setup =====
+I'll use a vanilla Kernel 2.4.26 from www.kernel.org with PCMCIA and Wireless LAN support. In userspace I use the latest ''pcmcia-cs'' (3.2.5-7), ''[[:hotplug]]'' (0.0.20040329-11) and ''wireless-tools'' (26+27pre22-1) packages from [[:Debian]]s unstable branch. Everything is done on my Fujitsu-Siemens [[:Lifebook]].
+===== The acx100 driver =====
+A GPL'd driver for the TI chipset is available here: http://acx100.sourceforge.net/
+  $> wget http://switch.dl.sourceforge.net/sourceforge/acx100/acx100-0.2.0pre8.tar.bz2
+  $> tar -xjvf acx100-0.2.0pre8.tar.bz2
+  $> cd acx100-0.2.0pre8
+So far so easy. The driver needs a firmware which is, for legal reasons, not included in the download. This firmware can be extracted from the windows drivers (available at [[http://www.conceptronic.net/support/file_list01.asp?g=9&p=C22C&t=dr|conceptronic.net]]) or you can let the Makefile fetch and extract the needed firmware from the net. I go for the latter:
+  $> make fetch_firmware
+Now compile and install
+  $> make
+  #> make install
+Inserting the card no longer freezes the machine even with the cardmanager running but ''dmesg'' shows still some errors:
+<code>
+cs: cb_alloc(bus 1): vendor 0x104c, device 0x8400
+PCI: Enabling device 01:00.0 (0000 -> 0003)
+acx100: It looks like you were coaxed into buying a wireless network card
+acx100: that uses the mysterious ACX100 chip from Texas Instruments.
+acx100: You should better have bought e.g. a PRISM(R) chipset based card,
+acx100: since that would mean REAL vendor Linux support.
+acx100: Given this info, it's evident that this driver is quite EXPERIMENTAL,
+acx100: thus your mileage may vary. Visit http://acx100.sf.net for support.
+acx100_init_module: dev_info is: TI acx_pci
+acx100_init_module: TI acx_pci.o: Ver 0.2.0pre8 Driver initialized, waiting for cards to probe...
+PCI: Setting latency timer of device 01:00.0 to 64
+Found ACX100-based wireless network card at 01:00.0, irq:9, phymem1:0x10800000, phymem2:0x10810000, mem1:0xd096c000, mem1_size:4096, mem2:0xd096e000, mem2_size:65536.
+acx100_probe_pci: using ACX100 io resource addresses (size: 54)
+hw_unavailable = 1
+reset hw_unavailable++
+acx100_reset_mac: enable soft reset...
+acx100_reset_mac: disable soft reset and go to init mode...
+ERROR: no directory for firmware file specified, ABORTING. Make sure to set module parameter 'firmware_dir'! (specified as absolute path!)
+acx100_reset_dev: Failed to upload firmware to the ACX100
+acx100_probe_pci: TI acx_pci: MAC initialize failure!
+acx100_probe_pci: TI acx_pci.o: Ver 0.2.0pre8 Loading FAILED
+</code>
+Obviously it fails to load the firmware. The location of the firmware files has to be given as module parameter. First lets copy the firmware files downloaded by ''make fetch_firmware'' to some sane place. I suggest ''/usr/local/share/acx100-firmware''.
+  #> mkdir -p /usr/local/share/acx100-firmware
+  #> cp firmware/*.BIN /usr/local/share/acx100-firmware/
+Now we need to tell modprobe were we put it. For the [[Debian]] way we just create a new file called ''/etc/modutils/acx_wlan'' with the following content:
+<file>
+options acx_pci firmware_dir=/usr/local/share/acx100-firmware/
+</file>
+Then run ''update-modules'' as root.
+Note: For 2.6.x Kernel you have to put this file in the ''/etc/modprobe.d'' directory.
+Now inserting the card loads the driver with the right firmware and registers a ''wlan0'' device to work with:
+  #> iwconfig wlan0 essid "MeinKleinesWLAN" key restricted 's:13chars ASCII' mode Managed
+  #> dhclient wlan0
+Another card with wicked hardware mastered :-)