Messages in this thread | | | Date | Tue, 25 Apr 2006 22:10:18 -0400 | From | "Jon Smirl" <> | Subject | Re: PCI ROM resource allocation issue with 2.6.17-rc2 |
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On 4/25/06, Dave Airlie <airlied@linux.ie> 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 > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
-- Jon Smirl jonsmirl@gmail.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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