Hello Sam, Thanks for your response. Actually, I did exactly what you said pkt->makeTimingResponse(), and pkt->setData(&value). And when debugging I follow the packet and the attribute pkt->req don't change, so logically the crossbar should have the proper routing, but it's not the case. Do you have any other ideas, where this problem can come from.
Thanks again for your help, I appreciate it. Iliass ----- Mail original ----- De: "Samuel Thomas" <samuel_tho...@brown.edu> À: "gem5 users mailing list" <gem5-users@gem5.org> Cc: "Iliass Lasri" <iliass.la...@telecom-paris.fr> Envoyé: Mardi 16 Juillet 2024 22:07:32 Objet: Re: [gem5-users] new SimObject fails to send a response packet due to crossbar issue Hi Iliass, This error typically happens when the XBar receives a packet that it didn’t send to the SimObject as a response. Are you making a new response packet? If so, try using the pkt->makeTimingResponse() function to send the received packet directly back to the XBar. Hopefully this helps. Best, Sam > On Jul 16, 2024, at 3:18 PM, Iliass Lasri via gem5-users > <gem5-users@gem5.org> wrote: > > > Hello gem5 community, > > I created a new SimObject that does just like the memory, the object has a > Response port when it recieves a read command it sends a ReadResponse, but > when it arrives to the xbar, the xbar fails to route it, and the assersion in > line 454 in coherent_xbar.cc _assert(route_lookup != routeTo.end()); fails, > however While debugging I made sure to have to send a Response packet and I > just modify the data like this : pkt->setData(&value); pkt->makeResponse(); > port.sendTimingResp(pkt); > > More details : I just write a C code reading from the address I assigned to > the module and the Request packet arrives to the new object and the REsponse > packet succesufly leaves the new object and get to the xbar. the problem is > just with the routing in the xbar, knowimg that I don't modify pkt->req, used > by the xbar to remember the reauest came from where. > > So I don't really know where the problem can come from, thank you all for > your help. > > Iliass Lasri > Msc of Engineering Student at Télécom Paris > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org To unsubscribe send an email to gem5-users-le...@gem5.org
