Wifi over SDIO
In this page, we tested a SDIO extend card with Marvell 8686 WIFI module, via BF548-EZKIT SD Host controller. We use 2009R1 uclinux-dist.
Kernel Configure
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wireless network stack:
Networking ---> [*] Networking support Wireless ---> <*> Improved wireless configuration API [*] nl80211 new netlink interface support [*] Old wireless static regulatory definitions -*- Wireless extensions [*] Wireless extensions sysfs files <*> Generic IEEE 802.11 Networking Stack (mac80211) -
Blackfin SD Host driver:
Device Drivers ---> <*> MMC/SD card support ---> *** MMC/SD Host Controller Drivers *** <*> Blackfin Secure Digital Host support [*] Blackfin EZkit Missing SDH_CMD Pull Up Resistor Workaround [*] Enable sdio irq for sdio device -
libertas driver: For details about libertas, see linux wireless
Device Drivers ---> [*] Network device support ---> Wireless LAN ---> [*] Wireless LAN (IEEE 802.11) <M> Marvell 8xxx Libertas WLAN driver support <M> Marvell Libertas 8385 and 8686 SDIO 802.11b/g cards [*] Support transferring block with size of power-of-2 only [*] Enable full debugging output in the Libertas module. -
Disable Nand flash controller support, because the Nand flash controller use the same DMA channel as SDH
Device Drivers ---> <*> Memory Technology Device (MTD) support ---> <*> NAND Device Support ---> < > Blackfin on-chip NAND Flash Controller driver
Setup Wifi
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Build wireless network tools:
Network Applications ---> --- Wireless-tools [*] wireless_tools support [*] iwconfig [*] iwgetid [*] iwlist [*] iwpriv [*] iwspy
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Add libertas firmware to rootfs: For details of the non-free firmware, see linux wireless - libertas driver
$ cd uclinux-dist $ mkdir romfs/lib/firmware $ cp …/sd8686.bin …/sd8686_helper.bin romfs/lib/firmware
Kernel Testing
Build the kernel image. Download to BF548-EZkit and boot.
- If the SDH driver found the card, there would be a message like:
mmc0: new SDIO card at address 0001
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Load libertas driver:
root:/> modprobe libertas root:/> modprobe libertas_sdio helper_name=sd8686_helper.bin fw_name=sd8686.bin libertas_sdio: Libertas SDIO driver libertas_sdio: Copyright Pierre Ossman firmware: requesting sd8686_helper.bin firmware: requesting sd8686.bin libertas: 00:13:e0:a1:69:92, fw 9.70.3p24, cap 0x00000303 libertas: unidentified region code; using the default (USA) libertas: PREP_CMD: command 0x00a3 failed: 2 libertas: PREP_CMD: command 0x00a3 failed: 2 libertas: eth1: Marvell WLAN 802.11 adapter
Connect to an Access Point (Managed Mode)
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Check eth1
root:/> iwconfig eth1 eth1 IEEE 802.11b/g ESSID:"" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Bit Rate:0 kb/s Tx-Power=18 dBm Retry short limit:8 RTS thr=2347 B Fragment thr=2346 B 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 -
scan for available APs :
root:/> ifconfig eth1 up root:/> iwlist eth1 scan eth1 Scan completed : Cell 01 - Address: 00:1C:F9:C0:73:00 ESSID:"ADIWLAN" Mode:Managed Frequency:2.412 GHz (Channel 1) Quality=99/100 Signal level=-47 dBm Noise level=-96 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s 11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (1) : TKIP Authentication Suites (1) : 802.1x Cell 02 - Address: 00:1C:F9:C0:73:01 ESSID:"ADICHINA" Mode:Managed Frequency:2.412 GHz (Channel 1) Quality=99/100 Signal level=-48 dBm Noise level=-96 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s 11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (1) : TKIP Authentication Suites (1) : 802.1x [snip] -
Connect to AP:
root:/> iwconfig eth1 essid linksys root:/> ifconfig eth1 192.168.1.101 up root:/> iwconfig eth1 eth1 IEEE 802.11b/g ESSID:"linksys" Mode:Managed Frequency:2.437 GHz Access Point: 00:1A:70:D4:94:C7 Bit Rate:0 kb/s Tx-Power=13 dBm Retry short limit:8 RTS thr=2347 B Fragment thr=2346 B Encryption key:off Power Management:off Link Quality=95/100 Signal level=-39 dBm Noise level=-93 dBm Rx invalid nwid:0 Rx invalid crypt:2499 Rx invalid frag:0 Tx excessive retries:24 Invalid misc:6120 Missed beacon:0 root:/> route add default gw 192.168.1.1 root:/> ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1): 56 data bytes 64 bytes from 192.168.1.1: seq=0 ttl=64 time=24.000 ms 64 bytes from 192.168.1.1: seq=1 ttl=64 time=12.000 ms 64 bytes from 192.168.1.1: seq=2 ttl=64 time=12.000 ms 64 bytes from 192.168.1.1: seq=3 ttl=64 time=16.000 ms 64 bytes from 192.168.1.1: seq=4 ttl=64 time=12.000 ms 64 bytes from 192.168.1.1: seq=5 ttl=64 time=12.000 ms
Adhoc Mode
On both nodes. (One is 192.168.0.10, the other is 192.168.0.11), do bellow setup:
root:/> iwconfig eth1 mode ad-hoc
root:/> iwconfig eth1 essid my_network
root:/> iwconfig eth1 channel 1
root:/> ifconfig eth1 up
root:/> ifconfig eth1 192.168.1.11
root:/> iwconfig
eth1 IEEE 802.11b/g ESSID:"my_network"
Mode:Ad-Hoc Frequency:2.437 GHz Cell: 02:24:D4:0D:78:9D
Bit Rate:54 Mb/s Tx-Power=13 dBm
Retry short limit:8 RTS thr=2347 B Fragment thr=2346 B
Encryption key:off
Power Management:off
Link Quality=95/100 Signal level=-30 dBm Noise level=-92 dBm
Rx invalid nwid:0 Rx invalid crypt:2664 Rx invalid frag:0
Tx excessive retries:23 Invalid misc:5865 Missed beacon:0
root:/> ping 192.168.1.10
PING 192.168.1.10 (192.168.1.10): 56 data bytes
64 bytes from 192.168.1.10: seq=0 ttl=64 time=40.000 ms
64 bytes from 192.168.1.10: seq=1 ttl=64 time=12.000 ms
64 bytes from 192.168.1.10: seq=2 ttl=64 time=12.000 ms
64 bytes from 192.168.1.10: seq=3 ttl=64 time=16.000 ms
64 bytes from 192.168.1.10: seq=4 ttl=64 time=16.000 ms
^C
--- 192.168.1.10 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 12.000/19.200/40.000 ms
Performance
BF548-Ezkit
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System Setting
| Board Version | CCLK | SCLK | Kernel Version | Toolchain Version |
|---|---|---|---|---|
| BF548-EZKIT-1.4 - Rev 0.2 | 525MHz | 131MHz | 2.6.28.9-ADI-2009R1-pre-svn6259 | gcc 4.1.2 (svn-3305) |
iperf
Managed Mode
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AP: Linksys WRH54G
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Server side (a Linux PC with Intel WiFi link 5100)
linux-pc:/$ iwconfig wlan0 IEEE 802.11abgn ESSID:"linksys" Mode:Managed Frequency:2.437 GHz Access Point: 00:1A:70:D4:94:C7 Bit Rate=1 Mb/s Tx-Power=15 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Power Management:off Link Quality=100/100 Signal level:-22 dBm Noise level=-83 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 linux-pc:/$ ./iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------
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Client side
root:/> iwconfig eth1 eth1 IEEE 802.11b/g ESSID:"linksys" Mode:Managed Frequency:2.437 GHz Access Point: 00:1A:70:D4:94:C7 Bit Rate:1 Mb/s Tx-Power=13 dBm Retry short limit:8 RTS thr=2347 B Fragment thr=2346 B Encryption key:off Power Management:off Link Quality=100/100 Signal level=-23 dBm Noise level=-91 dBm Rx invalid nwid:0 Rx invalid crypt:2495 Rx invalid frag:0 Tx excessive retries:11276 Invalid misc:2789127 Missed beacon:0 root:/> iperf -v iperf version 2.0.4 (7 Apr 2008) pthreads root:/> iperf -c 192.168.1.100 -i 1 ------------------------------------------------------------ Client connecting to 192.168.1.100, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.101 port 35970 connected with 192.168.1.100 port 5001 [ ID] Interval Transfer Bandwidth [ 5] 0.0- 1.0 sec 264 KBytes 2.16 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 1.0- 2.0 sec 216 KBytes 1.77 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 2.0- 3.0 sec 240 KBytes 1.97 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 3.0- 4.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 4.0- 5.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 5.0- 6.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 6.0- 7.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 7.0- 8.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 8.0- 9.0 sec 248 KBytes 2.03 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 9.0-10.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 2.27 MBytes 1.91 Mbits/sec
Adhoc Mode
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Server side (a Linux PC with Intel WiFi link 5100)
linux-pc:/$ ./iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------
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Client side
root:/> iwconfig eth1 IEEE 802.11b/g ESSID:"my_network" Mode:Ad-Hoc Frequency:2.437 GHz Cell: 02:24:D4:0D:78:9D Bit Rate:54 Mb/s Tx-Power=13 dBm Retry short limit:8 RTS thr=2347 B Fragment thr=2346 B Encryption key:off Power Management:off Link Quality=95/100 Signal level=-30 dBm Noise level=-92 dBm Rx invalid nwid:0 Rx invalid crypt:2664 Rx invalid frag:0 Tx excessive retries:23 Invalid misc:5865 Missed beacon:0 root:/> iperf -c 192.168.1.10 -i 1 ------------------------------------------------------------ Client connecting to 192.168.1.10, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.11 port 38997 connected with 192.168.1.10 port 5001 [ ID] Interval Transfer Bandwidth [ 5] 0.0- 1.0 sec 248 KBytes 2.03 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 1.0- 2.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 2.0- 3.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 3.0- 4.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 4.0- 5.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 5.0- 6.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 6.0- 7.0 sec 224 KBytes 1.84 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 7.0- 8.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 8.0- 9.0 sec 240 KBytes 1.97 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 9.0-10.0 sec 232 KBytes 1.90 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 2.26 MBytes 1.90 Mbits/sec
BF518F-Ezkit
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System Setting
| Board Version | CCLK | SCLK | Kernel Version | Toolchain Version |
|---|---|---|---|---|
| BF518F-ezkit-0.1 - Rev 0.0 | 400MHz | 100MHz | 2.6.28.9-ADI-2009R1-pre-svn6277 | gcc 4.1.2 (09r1-rc5) |
iperf
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Client side
root:/> iperf -c 192.168.1.2 -i 1 ------------------------------------------------------------ Client connecting to 192.168.1.2, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.101 port 33900 connected with 192.168.1.2 port 5001 [ 5] 0.0- 1.0 sec 256 KBytes 2.10 Mbits/sec [ 5] 1.0- 2.0 sec 224 KBytes 1.84 Mbits/sec [ 5] 2.0- 3.0 sec 232 KBytes 1.90 Mbits/sec [ 5] 3.0- 4.0 sec 224 KBytes 1.84 Mbits/sec [ 5] 4.0- 5.0 sec 232 KBytes 1.90 Mbits/sec [ 5] 5.0- 6.0 sec 224 KBytes 1.84 Mbits/sec [ 5] 6.0- 7.0 sec 232 KBytes 1.90 Mbits/sec [ 5] 7.0- 8.0 sec 200 KBytes 1.64 Mbits/sec [ 5] 8.0- 9.0 sec 232 KBytes 1.90 Mbits/sec [ 5] 9.0-10.0 sec 232 KBytes 1.90 Mbits/sec [ 5] 0.0-10.1 sec 2.24 MBytes 1.86 Mbits/sec