I'm not sure what you mean by "regular ports"---you would connect it with the standard gem5 memory-system ports, then use memory-mapped I/O to access it. The thing with a USB drive is that you will need a USB hub to talk to it, you can't plug a USB device directly into the memory system.
Steve On Sun, Jun 28, 2015 at 12:45 PM cao2 <c...@mail.usf.edu> wrote: > Hi Steve > > Thank you very much for the information. You said MMIO, so does it mean > that I can't connect the device and the membus with regular ports. The > reason I want a peripheral is to monitor the communication among the entire > system, I was planning to add an USB drive and monitor its communication, > do you think it's possible to implement it? > I really appreciate your help. > > Best, > Yuting > > On Jun 26, 2015, at 4:15 PM, Steve Reinhardt <ste...@gmail.com> wrote: > > You can certainly include devices in your system configuration regardless > of whether you're using SE or FS mode. Without a device driver, though, > it's tricky to actually use use device, unless you've explicitly designed > the device for user-mode access, or if your application has its own device > driver built in. Basically you can use the 'map()' method on the Process > object (see src/sim/Process.py) to map the device registers into your > program address space, but from there it's up to you to do the proper MMIO > accesses to get it to work. > > Steve > > > On Fri, Jun 26, 2015 at 12:47 PM cao2 <c...@mail.usf.edu> wrote: > >> Hi >> >> Can SE mode have peripherals like terminal, usb or anything? I can't seem >> to find any related documentation. >> >> Best, >> Cao >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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