Gabriel, I tried your suggestion and while the OS doesn't detect a link, it does send the following right after toggling the link:
e1000: set_ics 4, ICR 4, IMR 0 e1000: set_ics 4, ICR 4, IMR 0 Without diving into the intel programming guide myself does that help in any way? Perhaps it's expecting an interrupt to fire that isn't? On Thu, Jun 5, 2014 at 10:44 PM, Gabriel L. Somlo <gso...@gmail.com> wrote: > Matthew Gamble <mgam...@mgamble.ca> wrote: > > I'm trying to get a VXWorks image running inside a qemu guest. I have > > the machine running, however, the vxworks image only has support for the > > 82544EI device so I had to change the device ID in e1000.c to get the > > device even recognized so I'm not sure if this is a bug or an issue for > > the development list. > > > > After changing e1000.c, the device is now seen by the guest OS, however, > it never gets a link. I've attached the e1000 debug logs in the hopes that > someone can help me understand where to start looking into why this guest > won't get a link. > > > > I tested the updated e1000 driver with a debian live CD and the card > > works under it, so it doesn't appear that the issue is with the driver > > string change but rather something in the e1000 driver itself. > > > > Here is the command I'm using to start QEMU: > > > > /opt/qemu/bin/qemu-system-i386 -cpu coreduo -hda /root/vxworks_test -m > > 2048 -netdev tap,ifname=tap0,id=net0 -netdev tap,ifname=tap1,id=net1 > > -device e1000,netdev=net0,mac=00:00:e8:01:02:03 -device > > e1000,netdev=net1,mac=00:00:e8:01:02:04 -boot c -curses -no-kvm -D > > /tmp/qemu.log 2>/tmp/e1000.log > > Can you try this: > > Add "-monitor stdio" to your qemu command line, and give an id to at > least one of your e1000 devices, like so: > > "-device e1000,netdev=net0,mac=00:00:e8:01:02:03,id=eth0" > > Then after the guest is finished booting (with no link on the e1000 > interfaces), from the qemu monitor prompt issue these two commands: > > set_link eth0 off > set_link eth0 on > > I'd be curious to find out if this causes the guest to see a link > become available... > > Thanks, > --Gabriel >
