Re: [Qemu-devel] [PATCH v20 4/7] pvpanic: pass configurable ioport to seabios

[Hu Tao]

On Wed, Apr 24, 2013 at 06:35:49PM +0200, Markus Armbruster wrote:
> Hu Tao <address@hidden> writes:
> 
> > This lets seabios patch the corresponding SSDT entry.
> >
> > Signed-off-by: Hu Tao <address@hidden>
> > ---
> >  hw/misc/pvpanic.c         | 14 ++++++++++++++
> >  hw/nvram/fw_cfg.c         |  8 +++++++-
> >  include/hw/nvram/fw_cfg.h |  2 ++
> >  3 files changed, 23 insertions(+), 1 deletion(-)
> >
> > diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
> > index 01cfe0b..a80fae5 100644
> > --- a/hw/misc/pvpanic.c
> > +++ b/hw/misc/pvpanic.c
> > @@ -18,6 +18,8 @@
> >  #include "sysemu/sysemu.h"
> >  #include "qemu/log.h"
> >  
> > +#include "hw/nvram/fw_cfg.h"
> > +
> >  /* The bit of supported pv event */
> >  #define PVPANIC_F_PANICKED      0
> >  
> > @@ -86,10 +88,22 @@ static const MemoryRegionOps pvpanic_ops = {
> >  static int pvpanic_isa_initfn(ISADevice *dev)
> >  {
> >      PVPanicState *s = ISA_PVPANIC_DEVICE(dev);
> > +    static bool port_configured;
> > +    void *fw_cfg;
> >  
> >      memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
> >      isa_register_ioport(dev, &s->io, s->ioport);
> >  
> > +    if (!port_configured) {
> > +        fw_cfg = object_resolve_path("/machine/fw_cfg", NULL);
> > +        if (fw_cfg) {
> > +            fw_cfg_add_file(fw_cfg, "etc/pvpanic-port",
> > +                            g_memdup(&s->ioport, sizeof(s->ioport)),
> > +                            sizeof(s->ioport));
> > +            port_configured = true;
> > +        }
> > +    }
> > +
> >      return 0;
> >  }
> >  
> > diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
> > index 97bba87..1a7e49c 100644
> > --- a/hw/nvram/fw_cfg.c
> > +++ b/hw/nvram/fw_cfg.c
> > @@ -489,11 +489,17 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t 
> > data_port,
> >      dev = qdev_create(NULL, "fw_cfg");
> >      qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
> >      qdev_prop_set_uint32(dev, "data_iobase", data_port);
> > -    qdev_init_nofail(dev);
> >      d = SYS_BUS_DEVICE(dev);
> >  
> >      s = DO_UPCAST(FWCfgState, busdev.qdev, dev);
> >  
> > +    if (!object_resolve_path("/machine/fw_cfg", NULL)) {
> > +        object_property_add_child(qdev_get_machine(), "fw_cfg", OBJECT(s),
> > +                                  NULL);
> > +    }
> > +
> > +    qdev_init_nofail(dev);
> > +
> >      if (ctl_addr) {
> >          sysbus_mmio_map(d, 0, ctl_addr);
> >      }
> 
> Oh, and while you're at it: mention the new QOM object in the commit
> message?

You mean fw_cfg is added to /machine/fw_cfg?