restoring PCI config space
John Baldwin
jhb at freebsd.org
Wed Feb 7 17:37:44 UTC 2007
On Wednesday 31 January 2007 12:08, Scott Long wrote:
> Andrew Gallatin wrote:
> > Scott Long writes:
> > > I need to do the same thing, and I concluded that pci_cfg_restore needs
> > > to be exported out via a DEVMETHOD. It might also be useful to export
> >
> > Hurray! Do you plan to do this soon?
> >
> > > a pci_cfg_save function.
> >
> > Doesn't the config space get saved in pci_add_child?
> >
> > Drew
>
> Wouldn't you want to preserve driver-local changes that are made to the
> config space? Things like the busmaster enable bit comes to mind.
If you use 'pci_enable_busmaster()' then that updates the copy in the dinfo.
--
John Baldwin
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