移远EC20的4G模块驱动程序源码

Gobi3000 network driver 2011-07-29-1026 This readme covers important information concerning the Gobi Net driver. Table of Contents 1. What's new in this release 2. Known issues 3. Known platform issues ------------------------------------------------------------------------------- 1. WHAT'S NEW This Release (Gobi3000 network driver 2011-07-29-1026) a. Signal the device to leave low power mode on enumeration b. Add "txQueueLength" parameter, which will set the Tx Queue Length c. Send SetControlLineState message during driver/device removal d. Change to new date-based versioning scheme Prior Release (Gobi3000 network driver 1.0.60) 06/29/2011 a. Add UserspacePoll() function, to support select() b. Fix possible deadlock on GobiUSBNetTXTimeout() c. Fix memory leak on data transmission Prior Release (Gobi3000 network driver 1.0.50) 05/18/2011 a. Add support for kernels up to 2.6.38 b. Add support for dynamic interface binding Prior Release (Gobi3000 network driver 1.0.40) 02/28/2011 a. In cases of QMI read errors, discard the error and continue reading. b. Add "interruptible" parameter, which may be disabled for debugging purposes. Prior Release (Gobi3000 network driver 1.0.30) 01/05/2011 a. Fix rare kernel PANIC if a process terminates while file handle close or device removal is in progress. Prior Release (Gobi3000 network driver 1.0.20) 11/01/2010 a. Fix possible kernel WARNING if device removed before QCWWANDisconnect(). b. Fix multiple memory leaks in error cases. Prior Release (Gobi3000 network driver 1.0.10) 09/17/2010 a. Initial release ------------------------------------------------------------------------------- 2. KNOWN ISSUES No known issues. ------------------------------------------------------------------------------- 3. KNOWN PLATFORM ISSUES a. Enabling autosuspend: Autosuspend is supported by the Gobi3000 module and its drivers, but by default it is not enabled by the open source kernel. As such, the Gobi3000 module will not enter autosuspend unless the user specifically turns on autosuspend with the command: echo auto > /sys/bus/usb/devices/.../power/level b. Ksoftirq using 100% CPU: There is a known issue with the open source usbnet driver that can result in infinite software interrupts. The fix for this is to test (in the usbnet_bh() function) if the usb_device can submit URBs before attempting to submit the response URB buffers. c. NetworkManager does not recognize connection after resume: After resuming from sleep/hibernate, NetworkManager may not recognize new network connections by the Gobi device. This is a system issue not specific to the Gobi device, which may result in dhcp not being run and the default route not being updated. One way to fix this is to simply restart the NetworkManager service. -------------------------------------------------------------------------------