Rt3070 WiFi模块驱动.docx

Rt3070 无线网卡驱动WiFi芯片：RT3070开发环境：ubuntu12.04 OK6410开发板系统：linux3.0.1编译器：arm-linux-gcc编译器版本：4.3.2 1. 摘要驱动分为STA驱动和SoftAP驱动两种，STA驱动支持无线网卡工作在STA模式下，而SoftAP的驱动支持无线网卡工作在软AP的模式下，可以作为一个基于软件支持的接入点。本文所采用的STA驱动为：2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO.bz2，SoftAP的驱动为：2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2。要分别实现无线网卡的STA功能以及AP功能，需要移植STA驱动和SoftAP驱动，本文将分别介绍这两种功能的实现方法。2. STA功能实现2.1 源码下载及解压缩从网上下载STA驱动包：#tar jxvf 2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO.bz2cd 2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO修改原有的Makefile文件如下（只给出需要修改的部分，“-”表示删除的行，“+”表示添加的行）：+#Makefile for RT3070 on MBC-SAM9G45+#2010_11_13 by liyiRT28xx_MODE = STATARGET = LINUXCHIPSET = 3070-PLATFORM = PC+PLATFORM = IXPifeq ($(PLATFORM),IXP)-LINUX_SRC =/project-CROSS_COMPILE = arm-linux-+LINUX_SRC = /home/Embest_SAM9G45/linux-2.6.30+CROSS_COMPILE = /usr/local/arm2007q1/bin/arm-none-linux-gnueabi-endif修改os/linux文件夹中的config.mk文件，需要修改的地方如下（只给出需要修改的部分）：# Support Wpa_Supplicant- HAS_WPA_SUPPLICANT=n+HAS_WPA_SUPPLICANT=y# Support Native WpaSupplicant for Network Maganger-HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=n+HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=yifeq ($(PLATFORM),IXP)- WFLAGS += -DRT_BIG_ENDIAN+#WFLAGS += -DRT_BIG_ENDIANendififeq ($(PLATFORM),IXP)EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/includeendififeq ($(PLATFORM),IXP)-CFLAGS := -v -D_KERNEL_ -DMODULE -I$(LINUX_SRC)/include -I$(RT28xx_DIR)/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Uarm -fno-common -pipe -mapcs-32 -D_LINUX_ARM_ARCH_=5 -mcpu=xscale -mtune=xscale -malignment-traps -msoft-float $(WFLAGS)-EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/include-export CFLAGS-+endif修改完成以后，通过以下命令编译：make ARCH=arm KBUILD_NOPEDANTIC=1如果不加KBUILD_NOPEDANTIC=1将出现CFLAGS was changed in . Fix it to use EXTRA_CFLAGS的错误，编译不能通过。编译完成后，会在os/linux文件夹中生成rt3070sta.ko的驱动模块。此模块通过下载工具可以下载到/mnt目录。在驱动目录下新建一个文件夹Wireless/RT2870STA，将RT2870STA.dat复制进Wireless/RT2870STAm目录下，同时将此文件夹拷贝进开发板。从超级终端进入开发板目录/mnt使用以下命令将Wireless文件夹拷贝到/etc目录下，将rt3070sta.ko拷贝进/home/root用户目录下：#cp /mnt/Wireless /usr r#cp /mnt/rt3070sta.ko /home/root打开root目录，加载驱动模块：#cd /home/root#insmod rt3070sta.ko如果加载出现一下错误：#insmod rt3070sta.koinsmod: error inserting rt3070sta.ko: -1 Unknown symbol in module#dmesg | grep rt3070 2443.154486 rt2070ap: Unknown symbol usb_alloc_urb 2443.154628 rt2070ap: Unknown symbol usb_free_urb 2443.155032 rt2070ap: Unknown symbol usb_register_driver 2443.155324 rt2070ap: Unknown symbol usb_put_dev 2443.155439 rt2070ap: Unknown symbol usb_get_dev 2443.155652 rt2070ap: Unknown symbol usb_submit_urb 2443.156164 rt2070ap: Unknown symbol usb_control_msg 2443.156553 rt2070ap: Unknown symbol usb_deregister 2443.157013 rt2070ap: Unknown symbol usb_kill_urb 2443.157116 rt2070ap: Unknown symbol usb_buffer_free 2443.157443 rt2070ap: Unknown symbol find_vpid 2443.157675 rt2070ap: Unknown symbol usb_buffer_alloc则需要在文件os/linux/usb_main_dev.c文件的开头加上如下一行代码：MODULE_LICENSE(“GPL”);然后重新编译、重新加载，即可得到正确的结果。用ifconfig-a命令查看网络，如果加载成功，不会有任何提示，同时可以查看到ra0设备的存在。加载上模块过后，可以用相关命令设置无线网卡。命令包括iwpriv、iwconfig、iwlist、ifconfig等。比如设置无线网卡地址为192.168.1.5：ifconfig ra0 192.168.1.5设置无线网络模式为ad-hoc模式：iwpriv ra0 set NetworkType=Adhoc设置SSID名为isn313：iwconf ra0 essid isn313查看无线网络：iwlist ra0 scanningSoftAP驱动移植解压驱动2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2，然后进入目录：tar jxvf 2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2cd 2010_0203_RT3070_SoftAP_v2.4.0.1_DPA修改Makefile如下（“-”表示删除的行，“+”表示添加的行）：+#Makefile for RT3070 on MBC-SAM9G45+#2010_11_13 by liyiRT28xx_MODE =APTARGET = LINUXCHIPSET = 3070-PLATFORM = PC+PLATFORM = IXPifeq ($(PLATFORM),IXP)-Linux_SRC = /project.-CROSS_COMPILE = arm-linux-+LINUX_SRC = /home/Embest_SAM9G45/linux-2.6.30+CROSS_COMPILE = /usr/local/arm2007q1/bin/arm-none-linux-gnueabi-endif注意，在2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2驱动中，有三个文件夹，分别为MODULE、NETIF、UTIL，在这三个文件中均有Makefile，所有的Makefile都需要如上修改，同样，三个文件夹中的config.mk文件也都需要修改。修改config.mk配置文件。ifeq ($(PLATFORM),IXP)- WFLAGS += -DRT_BIG_ENDIAN+#WFLAGS += -DRT_BIG_ENDIANendififeq ($(PLATFORM),IXP)#WFLAGS += -DRT_BIG_ENDIANendififeq ($(PLATFORM),IXP)CFLAGS := -v -D_KERNEL_ -DMODULE -I$(LINUX_SRC)/include -I$(RT28xx_DIR)/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Uarm -fno-common -pipe -mapcs-32 -D_LINUX_ARM_ARCH_=5 -mcpu=xscale -mtune=xscale -malignment-traps -msoft-float $(WFLAGS)EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/includeexport CFLAGSendif对不起，在修改驱动config.mk文件的时候，红色修改部分没有给全，应该是把CFLAGS和EXTRA_FLAGS中的-mbig-endian选项去掉，因为在ARM中采用的小端模式！特此更正！所有的config.mk都修改好以后，通过以下命令进行编译：make ARCH=arm KBUILD_NOPEDANTIC=1如果编译不能通过，请检查是否所有的文件夹中的Makefile和config.mk都已经修改。编译通过后，将在三个文件夹中分别生成三个可加载模块：rt3070ap.ko，rtutil3070ap.ko，rtnet3070ap.ko。通过USB接口将这三个模块和rt2870ap.dat文件下载到开发板目录下。并将文件移动到相应位置：#mkdir /etc/Wireless/#mkdir /etc/Wireless/RT2870AP/#cp /mnt/rt2870ap.dat /etc/Wireless/RT2870AP/RT2870AP.dat#cp /mnt/rt3070ap.ko /home/root#cp /mnt/rtutil3070ap.ko /home/root#cp /mnt/rtnet3070ap.ko /home/root第三行中，在RT2870AP文件夹中的.dat文件名必须是大写的，否则模块将无法读取。移动好后，进入root目录并加载模块：#cd /home/root#insmod rtutil3070ap.ko#insmod rt3070ap.ko#insmod rtnet3070ap.ko#ifconfig ra0 up此处，加载模块一定要按此顺序加载，否则将出现以下错误（用dmesg函数可查看相关错误信息）：#insmod rt3070sta.koinsmod: error inserting rt3070sta.ko: -1 Unknown symbol in module#dmesg | grep rt3070 1011.612979 rt3070ap: Unknown symbol rausb_buffer_free 1011.613153 rt3070ap: Unknown symbol RtmpOSTaskNotifyToExit 1011.613410 rt3070ap: Unknown symbol rausb_buffer_alloc 1011.613536 rt3070ap: Unknown symbol RTMPFreeNdisPacket 1011.613692 rt3070ap: Unknown symbol AdapterBlockAllocateMemory 1011.613816 rt3070ap: Unknown symbol RTMP_IndicateMediaState 1011.614106 rt3070ap: Unknown symbol RTMP_SetPeriodicTimer 1011.614241 rt3070ap: Unknown symbol os_alloc_mem 1011.614373 rt3070ap: Unknown symbol ClonePacket 1011.614505 rt3070ap: Unknown symbol RTDebugLevel 1011.614646 rt3070ap: Unknown symbol announce_802_3_packet 1011.614780 rt3070ap: Unknown symbol Sniff2BytesFromNdisBuffer 1011.614916 rt3070ap: Unknown symbol RTMP_OS_Add_Timer 1011.615043 rt3070ap: Unknown symbol rausb_submit_urb 1011.615167 rt3070ap: Unknown symbol RTMP_AllocateFragPacketBuffer 1011.615292 rt3070ap: Unknown symbol rausb_alloc_urb 1011.615491 rt3070ap: Unknown symbol RtmpOSNetPktAlloc 1011.615616 rt3070ap: Unknown symbol VLAN_8023_Header_Copy 1011.615739 rt3070ap: Unknown symbol RTMP_OS_Mod_Timer 1011.615863 rt3070ap: Unknown symbol os_free_mem 1011.616005 rt3070ap: Unknown symbol rausb_control_msg 1011.616079 rt3070ap: Unknown symbol duplicate_pkt_with_TKIP_MIC 1011.616079 rt3070ap: Unknown symbol duplicate_pkt_with_VLAN 1011.616079 rt3070ap: Unknown symbol DuplicatePacket 1011.616079 rt3070ap: Unknown symbol RtmpOSTaskCustomize 1011.616079 rt3070ap: Unknown symbol RTMP_OS_Del_Timer 1011.616079 rt3070ap: Unknown symbol rausb_free_urb 1011.616079 rt3070ap: Unknown symbol get_netdev_from_bssid 1011.616079 rt3070ap: Unknown symbol hex_dump 1011.616079 rt3070ap: Unknown symbol RtmpOSFileOpen 1011.616079 rt3070ap: Unknown symbol RTMPFreeAdapter 1011.616079 rt3070ap: Unknown symbol RtmpOSFSInfoChange 1011.616079 rt3070ap: Unknown symbol wlan_802_11_to_802_3_packet 1011.618201 rt3070ap: Unknown symbol RTMP_GetCurrentSystemTime 1011.618341 rt3070ap: Unknown symbol RTMPAllocateNdisPacket 1011.618498 rt3070ap: Unknown symbol RTMPSendWirelessEvent 1011.618621 rt3070ap: Unknown symbol RTMPL2FrameTxAction 1011.618747 rt3070ap: Unknown symbol rausb_kill_urb 1011.618899 rt3070ap: Unknown symbol RTMP_OS_Init_Timer 1011.619022 rt3070ap: Unknown symbol RTMPusecDelay 1011.619147 rt3070ap: Unknown symbol update_os_packet_info 1011.619312 rt3070ap: Unknown symbol RtmpOSFileRead 1011.619517 rt3070ap: Unknown symbol RtmpOSFileClose 1011.619641 rt3070ap: Unknown symbol RTMP_QueryPacketInfo 1011.619764 rt3070ap: Unknown symbol RtmpOSFileWrite在加载过程中若出现以下错误：421.461365 rt3070ap: module license RALINK taints kernel.421.461723 Disabling lock debugging due to kernel taint请修改UTIL/os/linux/usb_main_dev.c文件，在文件的开头加上如下一行程序：MODULE_LICENSE(“GPL”)重新编译：#make clean#make KBUILD_NOPEDANTIC=1然后再重新下载，按顺序加载模块即可成功。模块加载成功后，用一下命令可查看相关信息：#ifconfig aeth0Link encap:EthernetHWaddr 3A:1F:34:08:54:54BROADCAST MULTICASTMTU:1500Metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 B)TX bytes:0 (0.0 B)Interrupt:25 Base address:0xc000loLink encap:Local Loopbackinet addr:127.0.0.1Mask:255.0.0.0UP LOOPBACK RUNNINGMTU:16436Metric:1RX packets:8 errors:0 dropped:0 overruns:0 frame:0TX packets:8 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:0RX bytes:576 (576.0 B)TX bytes:576 (576.0 B)ra0Link encap:EthernetHWaddr 00:00:00:00:00:00BROADCAST MULTICASTMTU:1500Metric:1RX p