usb host timeout的原因是....usb controller過熱被保護電路關電.......
林老師卡好勒
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great~ it offers linux driver~
copy the directory Linux/rt73 in the Driver CDROM ( remember to chmod +w )
follow the README in Linux/rt73/module/
if you got error "undefined get_wireless_stats"
just fix rtmp_main.c, replace netdev->get_wireless_stats to netdev->get_stats
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編譯module
網路上有非官方driver : rt2x00 project
每天最新版本
或是直接用CVS更新
cvs -d:pserver:anonymous@rt2400.cvs.sourceforge.net:/cvsroot/rt2400 login
cvs -z3 -d:pserver:anonymous@rt2400.cvs.sourceforge.net:/cvsroot/rt2400 co -P source/rt73
修改Makefile
最前面增加五行
ARCH=arm
CROSS_COMPILE=/usr/local/arm/3.4.1/bin/arm-linux-
KERNDIR=/home2/fyodor/kernel/linux-2.6.25__from__2.6.24.3
(KERNDIR要指到目標板所使用的KERNEL SOURCE，而且KERNEL必須先設定好交叉編譯)
ROOTFS = /home2/fyodor/filesystem/rootfs
MODDIR = /lib/modules/2.6.24.3/extra
把module install 的目標位置依照目標kernel版本設定
否則就會安裝到目前uname -r 所找到的kernel module位置...
ps. make install時，modules.dep的設定不會跟著MODDIR而改變
所以還是得設定成extra
修改一行
FIRM_DIR := $(ROOTFS)/lib/firmware
編譯
(host)# make armdebug
警告訊息
!!! WARNING: Module file much too big (>1MB)
!!! Check your kernel settings or use 'strip'
*** Module rt73.ko built successfully
表示編出來的module太大了，這個好解決
必須削減(strip)多餘訊息 （strip之後，板子上無法modprobe！format不合）
(host)# arm-linux-strip ./rt73.ko
把module安裝到target rootfs
這一步，我不很確定怎麼做，試看看吧～
(host)# sudo make install
*** Install module in /lib/modules/2.6.24.3/extra ...
make[1]: Entering directory `/home2/fyodor/kernel/linux-2.6.25__from__2.6.24.3'
INSTALL /home2/fyodor/filesystem/tools/wirelessTool/WL-167G/rt73-cvs/rt73-cvs-2008042100/Module/rt73.ko
DEPMOD 2.6.24.3
make[1]: Leaving directory `/home2/fyodor/kernel/linux-2.6.25__from__2.6.24.3'
/sbin/depmod -a
*** Update /etc/modprobe.d/ralink alias for wlan*
*** Install firmware in /home2/fyodor/filesystem/rootfs/lib/firmware ...
*** Check old config ...
警告訊息
WARNING: Couldn't find symtab and strtab in module /lib/modules/2.6.20-15-generic/extra/rt73.ko
*** Update /etc/modprobe.d/ralink alias for wlan*
*** Install firmware in /home2/fyodor/filesystem/rootfs/lib/firmware ...
*** Check old config ...
因為這一個編譯所使用的kernel版本2.6.24.3，和host機器上目前使用的版本2.6.15不同導致這個錯誤不知道怎麼處理... 應該是沒關係因為真正運作時，這個module在板子上所配合的kernel 版本就對上了參考： http://www.linuxsir.org/bbs/thread307321.html
結束
一樣照著路徑複製到rootfs裡面
module : /lib/modules/2.6.24.3/extra/rt73.ko
firmware : /lib/firmware/rt73.bin
status code :
s3c2410-ohci s3c2410-ohci: urb c2704ec0 path 1 ep0in 5ec20000 cc 5
–> status -62
all status code : include/asm-generic/errno.h
#define ETIME 62 /* Timer expired */
Document of error codes : Documentation/usb/error-codes.txt
-ETIME (**)
No response packet received within the prescribed bus turn-around time. This error may instead be reported as -EPROTO or -EILSEQ.
懶惰的script
ROOTFS=/home2/fyodor/filesystem/rootfs
echo " install module to $ROOTFS/lib/modules/2.6.24.3/extra/"
cp /lib/modules/2.6.24.3/extra/rt73.ko $ROOTFS/lib/modules/2.6.24.3/extra/rt73.ko
echo " install firmware to $ROOTFS/lib/firmware/"
cp /lib/firmware/rt73.bin $ROOTFS/lib/firmware/
ls -alh $ROOTFS/lib/modules/2.6.24.3/extra/rt73.ko
ls -alh $ROOTFS/lib/firmware/rt73.binmodprobe
[busybox] # modprobe rt73 debug=15 firmware=/lib/firmware/rt73.bin
[busybox] # ifconfig wlan0 up
[busybox] # dmesg
rt73: USBVendorRequest TIMEOUT
rt73: Retry count exhausted or device removed!!!
rt73: BBP version = 0
s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0in 5ec20000 cc 5 --> status -62
rt73: USBVendorRequest TIMEOUT
s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0out 5ec20000 cc 5 --> status -62
rt73: USBVendorRequest TIMEOUT
s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0in 5ec20000 cc 5 --> status -62
rt73: USBVendorRequest TIMEOUT
s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0in 5ec20000 cc 5 --> status -62
rt73: USBVendorRequest TIMEOUT
s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0in 5ec20000 cc 5 --> status -62
rt73: USBVendorRequest TIMEOUT
rt73: Retry count exhausted or device removed!!!
rt73: BBP version = 0
為什麼會timeout勒..... 搞了一個禮拜還是搞不清楚
rt73: USBVendorRequest TIMEOUT是我自己加的訊息
總之status -62 = -ETIME，就是TIMEOUT
上面說過了，status code的詳細定義在$(KERNDIR)/include/asm-generic/errno.h
error的解釋在$(KERNDIR)/Documentation/usb/error-codes.txt
去rt2x00.serialmonkey.com post問題，一邊trace driver 一邊等
覺得問題比較有可能出在s3c2410-ohci
畢竟這部份的2440移植，我做的很粗糙
Error Code Tracing
rt73: USBVendorRequest TIMEOUT
$(RT73)/Module/rtusb_io.c ===> RTUSB_VendorRequest function內的ret 值
ret=usb_control_msg(pAd->pUsb_Dev, usb_sndctrlpipe( pAd->pUsb_Dev, 0 ), \
Request, RequestType, Value,Index, TransferBuffer, TransferBufferLength, \
CONTROL_TIMEOUT_JIFFIES);
message : s3c2410-ohci s3c2410-ohci: urb c1980840 path 1 ep0out 5ec20000 cc 5 --> status -62
來源：drivers/usb/host/ohci-q.c : dl_done_list() --> dl_reverse_done_list() --> ed_halted()
誰呼叫RTUSB_VendorRequest
RTUSBReadMACRegister
RTUSBWriteMACRegister
