Re: [OpenBIOS] [PATCH 0/2] Sparc64: virtio-block and interrupt support

[Artyom Tarasenko]

On Sat, May 12, 2012 at 3:54 PM, Blue Swirl  wrote:
> On Sat, May 12, 2012 at 1:34 PM, Artyom Tarasenko  wrote:
> > On Sat, May 12, 2012 at 1:42 PM, Blue Swirl  wrote:
> > > Based on Artyom's Sparc64 work (thanks a lot!), I added some minimal
> > > support for virtio-block and interrupt nodes.
> >
> > Hey, that was fast! Does it mean your patches also allow booting from
> > a virtio device?
>
> No, only a warning for the unknown device is avoided and Linux can use
> the interrupts.
>
> Making a simple driver does not look very difficult, here are some examples:
> http://fxr.watson.org/fxr/source/dev/virtio/block/virtio_blk.c
> http://fxr.watson.org/fxr/source/drivers/block/virtio_blk.c?v=linux-2.6
> http://git.qemu.org/?p=seabios.git;a=blob;f=src/virtio-blk.c;h=194deaf98b41a...

Fair enough. On the other hand, if we implement it too soon, there
will be less motivation in fixing the cmd646 emulation in qemu... ;-)
> > > With these patches and QEMU HEAD, Linux can boot like Artyom describes in
> > > http://tyom.blogspot.de/2012_05_01_archive.html
> > > but without any manual OpenBIOS setup.
> > >
> > > Blue Swirl (2):
> > >  pci: identify virtio-scsi devices
> > >  Sparc64: fix interrupt properties
> > >
> > > drivers/ide.c          |    2 ++
> > >  drivers/pc_serial.c    |    3 +++
> > >  drivers/pci.c          |   23 +++++++++++++++++++++++
> > >  drivers/pci_database.c |   19 ++++++++++++++++++-
> > >  drivers/pci_database.h |    1 +
> > >  include/drivers/pci.h  |    3 +++
> > >  6 files changed, 50 insertions(+), 1 deletion(-)