[Open-graphics] Offer to help write the Linux kernel driver for OGD1, OGC1, etc

[Jesper Juhl]

On 20/10/06, Peter Lund <firefly at vax64.dk> wrote:
> On Fri, 2006-10-20 at 20:19 +0200, Rodolphe Ortalo wrote:
>
> > BTW, do you think it would be feasible to start writing the kernel
> > driver using the simulator?
>
> It should be!
>
> >  I'm thinking to user-mode linux, or maybe a
> > full emulator like qemu or Bochs. (BTW, in this case, maybe the
> > simulator itself may be viewed as something useful by the emulator's
> > developpers...)
>
> qemu needs a patch that will make it load "plugins" containing code for
> emulating various pieces of hardware.
>
> Then the open graphics card can be simulated by a .so file that qemu
> loads.  This would be VERY useful to other people who develop PCI
> hardware.
>
> There needs to be a special version of the plugin that interfaces with a
> verilog simulator, possibly over a socket, so the Verilog hardware model
> can be substituted for the C hardware model.  Or so they can be
> cosimulated and any discrepancies detected.
>
> I imagine the interface should be modelled very closely on PCI, but not
> at the level of individual signals, of course, but rather on the level
> of "here's a write of 6 bytes to that address, here's a read, here's a
> configuration space write, ..."
>

Something like that for qemu would be extremely cool and would let
someone like me get started writing the kernel driver.


-- 
Jesper Juhl <jesper.juhl at gmail.com>
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