转自:http://blog.chinaunix.net/u2/75270/showart.php?id=1870742

前段时间移植了U-boot和linux2.6.27.9到mini2440上，最近有点空，手头有一个usb接口的zd1211b芯片的wifi无线网卡（PSP和NDSL玩家都知道的神卡），于是决定进行wifi无线网卡在嵌入式中的移植。要在内核中加入此无线网卡的驱动。我是在我移植的linux2.6.27.9内核上移植的。关于内核移植，请看我的这篇文章。

usb 1-1: USB disconnect, address 2
usb 1-1: new full speed USB device using s3c2410-ohci and address 3
usb 1-1: configuration #1 chosen from 1 choice
usb 1-1: reset full speed USB device using s3c2410-ohci and address 3
zd1211rw 1-1:1.0: phy1
表示无线网卡已被识别。使用cat /proc/net/wireless 命令，可以查看到系统中多了个wlan0网卡。此时，网卡还没工作。使用命

firmware: requesting zd1211/zd1211b_ub
firmware: requesting zd1211/zd1211b_uphr
zd1211rw 1-1:1.0: firmware version 4725
zd1211rw 1-1:1.0: zd1211b chip 0ace:1215 v4810 full 00-02-72 AL2230_RF pa0 g--N
网卡硬件开始正常工作了。其中，0ace:1215是网卡的ID，可以用主机linux系统命令lsusb查看到。

wlan0     Scan completed :
          Cell 01 - Address: 00:19:C6:53:B9:CE
                    ESSID:"rat-linux"
                    Mode:Master
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Quality=11/100 Signal level:66/100
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:tsf=000000056306469f
                    Extra: Last beacon: 1065ms ago

wlan0     IEEE 802.11bg ESSID:"rat-linux"
          Mode:Managed Frequency:2.417 GHz Access Point: 00:19:C6:53:B9:CE
          Bit Rate=1 Mb/s   Tx-Power=27 dBm
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B
          Encryption key:1234-56   Security mode:open
          Power Management:off
          Link Quality=100/100 Signal level:66/100
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0   Missed beacon:0