[Qemu-devel] systemc trial

[Nicolas SAUZEDE-NONST]

Hi Alessandro,

Ah OK, I see, your project seems to be way more ambitious than mine :-)
So my project may not help you as much as you could expect..
Maybe only the sysc/tcpip glue mechanism..

Anyway, attached is a tarball of my project, containing a patch against qemu-snapshot-2006-07-23_23 (I can provide it if it fails to patch against more recent versions) plus the directory related to sysc.

See sysc/README for more info..

Will be interested by your return.. and also by your PCI/sysc experiments also..
tell me if you manage to compile/run it (watch out the sysc signal trace log which is generated)

Can send me something from your project, just by curiosity ? :-)
I would be particularly interested by other sysc/qemu glue mechanism, and also to see if you managed to generate interrupts from sysc, and handled within qemu guest OS...

Good luck for your project,

NS.

ps: oops, I was not supposed to send my professional signature in the mail I sent you (fwd to the ML), well nevermind, I'll use another mail identity from now on.. :-)
pps: I also fwd it to the ML, in order for other interested people to have a look at it if anyone is interested..

Alessandro Corradi a écrit :

Hi Nicolas,
Thank you for reply! The "only" trouble is that I need to descrive it as a pci device. Taking the parallel port as an example is  very usefull for  simple  hardware  as you  made.  But I need some info for write my device into qemu, in particular the init function for pci device as the ne2000 (In init function of network card it set pci_conf, should I need to set up? And what arguments should I put in pci_register_io_region function?).
My emulated device for the moment need to run in i386 architeture so I have not to be completeness about cpu target etc...
Anyway I appreciate if you can send me your written device so I can see if it can help me!

Thanks

Ale

2006/8/22, Nicolas SAUZEDE:

Hi Alessandro,

Concerning your cosimulation problem, I may help a little bit,
because when you first posted on the qemu dev list about your sysc project,
it motivated me to first learn about systemc (which I didn't know) and to
start hacking qemu to connect them together.

Well I must admit I'm pretty satisfied of the results,
I managed to build some small sysc dumb devices (gates, counters,
ram/buffers, fpu etc..)
(with a FIR filter in mind indeed), defined some sort of sysc written
"interface" that offers a bus+signals to sysc, while connecting to qemu
via a socket.
Within qemu, I created a parallel-like device (as you said on the ml
recently) and so I can probe my device from within guest OS (dos, linux,
etc..)
the device is called remote.c (like a "remote" parallel-like device)

If you want I can send you some rough version of my project to see how
(ugly) I did
and maybe we can share our experiences...

Regards,

NS.

sysc0.tar.gz
Description: application/gzip