1. Software 12/1/2008

2. Software components Host Driver ST Licensed code
Provided as sources under NDA
Portable to multiple OS
Upper MAC
ST Proprietary code
Provided as static linkable library file under NDA
Linked in with the driver during compile
API/MIB documentation provided
Lower MAC
Provided as a binary file under NDA
Downloaded to the STLC4560 during driver initialization
HW Interface Driver
Platform specific
Customer required to write/create this driver for their specific hardware platform

3. HW/SW Overview - SoftMAC Architecture
User Space, WPA Supplicant
Supplicant required to:
Handle user input/configuration
WPA handshaking
Transport protocol (EAP/PEAP)
Handle certificates
Install keys in UMAC
Wi-Fi DRIVER
Allows for porting to custom embedded OS and Processor
UMAC
Binary Library file
Links with driver
Provides configuration API to:
Select encryption type
Set Key
Handles initial Authentication/Association to the AP
Configures LMAC for the correct encryption
LMAC
Binary file, contains ARM executable code
Hardware encryption/decryption of data according to configured encryption type and key.
Host
USER SPACE/WPA SUPPLICANT
Kernel
802.3 Frames
DRV
DRV
Wi-Fi DRIVER*
DRV
Upper API
DRV
UMAC
Driver API
Frames and control messages
Resource management: frames, memory, timers, debug
Interconnect API
Wi-Fi Module
HW Layer
LMAC
Customer responsible for porting the WiFi Driver and any user space applications such as the supplicant.

4. HW/SW Overview - Software Matrix
WEP = Wired Equivalent Privacy
TKIP = Temporal Key Integrity Protocol
AES/CCMP (HW Accelerator) = Advanced Encryption Standard/Counter Mode with Cipher Block Chaining Message Authentication Code Protocol
WPA = WiFi Protected Access
WPA2

5. HW/SW Overview - SoftMAC Architecture
Deliverables
Sample Linux driver code
UMAC binary Library and header file (host specific)
LMAC binary File. ARM executable code which is downloaded from the host to the module during Driver startup.
Required porting activities
Compile UMAC for target OS (done by ST/Sagrad)
Port driver to embedded host/OS
Memory handling - allocation/free
Timers – Start/Stop
Frame handling - allocation/free/
Debug message handling.
Mechanism to pass frames from and to the UMAC
Register/Unregister driver with kernel
Pass “Interconnect” messages to/from the UMAC which are sent/received over the hardware interface.

6. Pre-compiled Binaries for Processor Families
Vast number of processors already supported.
Big Endian and Little Endian support
Software integration has been simplified by providing a sample driver.
Ability to work with the customer to compile the UMAC for their specific platform and processor.
Little Endian
Big Endian
Arm X
Arm4
Arm9e
Armi
i386
mips
powerpc sh
sh4
thumb
xscale
Specific Processor list available upon request.