Avivo crash in xf86MapPciMem (X1950Pro 512M) and CRT blanking

[Robert Tate]

As I think I mentioned in my original email, when I patched the driver to
limit the size to 256M, it did prevent the crash.   I'm somewhat ignorant of
how PCI devices are handled by X and the OS. but I expected it should be use
the smaller of RADEON_CONFIG_MEMSIZE and the BAR (although if you know the
BAR is never too big, that would be a good simplification).

Thanks,
Robert

On 7/29/07, Daniel Stone <daniel at fooishbar.org> wrote:
>
> On Sun, Jul 29, 2007 at 10:45:41AM -0400, Alex Deucher wrote:
> > On 7/28/07, Robert Tate <wrtate at users.sourceforge.net> wrote:
> > > The gzipped radeondumps are attached.  Also with respect to the
> crashing problem, I forgot to mention that the line "avivo->fb_size =
> INREG(RADEON_CONFIG_MEMSIZE);" set fb_size to 536870912 (512M), but fglrx
> only reports 256M.
> >
> > I think the max pci BAR size is 256 MB, so you'd need to clip the
> > videoram to 256 MB.  the additional vram is GPU only.  Try adding a
> > check to the driver to clip vram to 256 MB.
>
> Well, it should really be keying off the size of the BAR, not off
> RADEON_CONFIG_MEMSIZE.  Sorry.
>
> Cheers,
> Daniel
>
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