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Documentation Home for Devicescape Wireless Infrastructure Platform > Package Reference
atheros-drv package
Information on this package is covered here.
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Package
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Description
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License
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atheros-drv
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Devicescape proprietary Atheros driver used by the IEEE80211 package.
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Summary
The Devicescape Atheros AR5K chip driver supporting both mini-PCI and system-on-a-chip (SoC) radios. This is a chip driver that requires the Devicescape IEEE 802.11 protocol stack module (see package ieee80211) to be loaded.
In addition to the basic IEEE 802.11 features, this driver supports the following extensions:
- Atheros Super A/G (access point mode only)
- Atheros XR (Access Point mode only)
- Wireless Multimedia Extensions (WMM) (formerly WME)
- WiFi Protected Access (WPA) and WPA2
- TKIP and CCMP (AES) encryption
- Multiple BSSID
Usage
Start/Stop Options
Use the following commands to control the Atheros driver on the target device.
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Action
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Command
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Start
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/etc/init.d/atheros-drv start
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Restart
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/etc/init.d/atheros-drv restart
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Module parameters can be set using the /etc/defaults/atheros-drv file to define a PARAMS variable. See the following section (Runtime Configuration) for information about these parameters.
Runtime Configuration
The chip driver is primarily configured using the interfaces exported by the Devicescape IEEE 802.11 protocol stack module. (See ieee80211 package.)
The exceptions to that are a number of module parameters that can be set at the time the module is loaded:
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Option
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Description
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queue_limit_data0
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TX queue length limit
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calibration_data_offset
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For SoC solutions only; the offset in flash of the radio calibration data. [0x3FC000]
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calibration_data_native_byte_order
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For SoC solutions only; the byte order of the radio calibration data
[default selected by build]
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MAC Revision Limitations
The following limitations exist with regard to the Medium Access Controller (MAC) layer for this driver:
- Atheros Extended Range (XR) does not work with ar5212
- Temporal Key Integrity Protocol (TKIP) with Wireless Multimedia Extensions (WMM) requires MAC revision 5.8 or newer for hardware acceleration.
- Counter mode/CBC-MAC Protocol (CCMP) hardware acceleration requires MAC revision 5.4 or newer.
Building the Package
Follow standard instructions for building kernel modules in the Devicescape Developer Guide topic on "Building the Packages", see subtopic: "Building a Kernel Module from a Source RPM"
Licensing
Atheros
Related Packages
Required
ieee80211 package
Suggested
ieee80211-tools package
hostapd package
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