> -----Original Message----- > From: Matt Edwards [mailto:[email protected]] > Sent: Wednesday, May 07, 2014 10:04 AM > To: [email protected] > Subject: [E1000-devel] 82579 Transmit hang with C200 and ME > > Hello, > > I have modified the current E1000 for a small embedded system. The driver > works well on systems that do not have Intel ME. On systems that have Intel > ME the transmit hangs. BTW the only systems I have tested with ME are > C200 PCH boards. The problem could also be the result of differences > between the C200 and C202. > > On transmit I have verified that transmit descriptor head and tail pointer > registers are correct after the driver loads up the DMA buffers but the MAC > never sends the frames and never updates the head, and never sets the DD > bit. This code works with other NIC's and on other 82579 NIC's. Receive DMA > works fine. > > I've had transmit hangs when the PHY throws data away, but when that > happens the MAC updates the descriptors as thought the packets were > transmitted. > > Is there something at the system level that must be running with Intel ME. > I've gone the E1000 driver to find all ME specific code and I think I have > included it. > > Any help is very much appreciated, > Best Regards, > Matt >
Good afternoon Matt, You started with the e1000 driver? Why not the e1000e driver? There are quite a few workarounds for 82579 in the e1000e driver that do not exist in e1000. Dave Ertman ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
