On 4/25/06, Dave Airlie <[email protected]> wrote:
>
> >
> > Maybe just add a DRM command to do it, so that old X versions (who don't
> > know about it) will just do it by hand, and then new X versions can do
> >
> > if (drm_ioctl(fd, DRM_SETUP_THE_DAMN_RESOURCES) < 0) {
> > /*
> > * I don't know what errno the drm-ioctl actually
> > * returns for unrecognized commands, so this is
> > * just an example
> > */
> > if (errno == ENOTTY) {
> > old kernel: do it by hand
> > }
> > }
> >
> > which allows us to go forward in a sane way, and finally leave the broken
> > X PCI-configuration-by-hand crap behind.
>
> It doesn't help of course, the fb drivers also pci_enable the devices,
> really X needs a kicking square, I'm trying to figure out some sort of fix
> here, but X does't some really stupid things with PCI resources...
>
> We really need a userspace way to pci_enable_device that X can call (via
> sysfs) so for cards that don't have a DRM or fb loaded we still get
> something..
You could make a null DRM driver that is loaded for every card that
doesn't have a real one. Give it aliases to make it match the X driver
names.
The right answer here is to start working towards a solution where the
OS is actually in control of hardware resources instead of a user app.
There can only be one entity in charge of PCI space or we will all go
insane. If we continue to say that old X binaries have to work we will
still have these same problems in 2060.
>
> Dave.
>
> --
> David Airlie, Software Engineer
> http://www.skynet.ie/~airlied / airlied at skynet.ie
> Linux kernel - DRI, VAX / pam_smb / ILUG
>
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--
Jon Smirl
[email protected]
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