Date: Wed, 07 Feb 2007 10:54:59 -0700 From: Scott Long <scottl@samsco.org> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org, Andrew Gallatin <gallatin@cs.duke.edu> Subject: Re: restoring PCI config space Message-ID: <45CA1273.8080205@samsco.org> In-Reply-To: <200702071212.06578.jhb@freebsd.org> References: <17855.30388.764471.322562@grasshopper.cs.duke.edu> <17855.31464.891778.783293@grasshopper.cs.duke.edu> <45C0CCFE.5090407@samsco.org> <200702071212.06578.jhb@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
John Baldwin wrote: > 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. > Do changes to the MSI/MSIX config space registers also get preserved? Scott
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?45CA1273.8080205>