Hi All, I am trying to attach an ethernet device to ARM SMMU and use it in the dist setup where two ARM systems are connected through the ethernet link. I am new to gem5 internals and I appreciate any help with this. I notice the use of attachSMMU at https://github.com/ARM-software/ATP-Engine/blob/be1066029d6256626b37be004e2a663fbc29f37e/gem5/baremetal_atp.py#L76 I could not find any other examples on SMMU, please let me know if you have any examples. I tried to change the ethernet device connection similarly in ARM bigLITTLE example configuration as below: Original function: https://github.com/gem5/gem5/blob/f29bfc0640c88a79eb7f94454ce31b3237ec0066/configs/example/arm/dist_bigLITTLE.py#L138 Before change: def addEthernet(system, options): # create NIC dev = IGbE_e1000() system.attach_pci(dev) system.ethernet = dev ... ... After change: def addEthernet(system, options): # create NIC dev = IGbE_e1000() system.realview.attachSmmu([dev],system.iobus) system.ethernet = dev ... ... With this change, I am getting the following warning and error: warn: system.realview.smmu adopting orphan SimObject param 'device_interfaces' AttributeError: Can't resolve proxy 'any' of type 'PciHost' from 'system.ethernet' Error in unproxying param 'host' of system.ethernet Again, I am new to gem5 internals and the above change might be completely wrong. I really appreciate any help in resolving this issue. Thanks, Chathura

Hi, Thank you for asking the question. This question is already in discussion on gem5 GitHub: https://github.com/orgs/gem5/discussions/239.I hope you find the answer to your question there. Regards, HarshilPatel On Mon, Aug 28, 2023 at 10:57 AM Chathura Rajapaksha via gem5-users < gem5-users@gem5.org> wrote: > Hi All, > > I am trying to attach an ethernet device to ARM SMMU and use it in the > dist setup where two ARM systems are connected through the ethernet > link. > I am new to gem5 internals and I appreciate any help with this. > > I notice the use of attachSMMU at > > https://github.com/ARM-software/ATP-Engine/blob/be1066029d6256626b37be004e2a663fbc29f37e/gem5/baremetal_atp.py#L76 > I could not find any other examples on SMMU, please let me know if you > have any examples. > > I tried to change the ethernet device connection similarly in ARM > bigLITTLE example configuration as below: > > Original function: > > https://github.com/gem5/gem5/blob/f29bfc0640c88a79eb7f94454ce31b3237ec0066/configs/example/arm/dist_bigLITTLE.py#L138 > > Before change: > def addEthernet(system, options): > # create NIC > dev = IGbE_e1000() > system.attach_pci(dev) > system.ethernet = dev > ... > ... > > After change: > def addEthernet(system, options): > # create NIC > dev = IGbE_e1000() > system.realview.attachSmmu([dev],system.iobus) > system.ethernet = dev > ... > ... > > With this change, I am getting the following warning and error: > warn: system.realview.smmu adopting orphan SimObject param > 'device_interfaces' > AttributeError: Can't resolve proxy 'any' of type 'PciHost' from > 'system.ethernet' > Error in unproxying param 'host' of system.ethernet > > Again, I am new to gem5 internals and the above change might be > completely wrong. > I really appreciate any help in resolving this issue. > > Thanks, > Chathura > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-leave@gem5.org >