[Intel-gfx] [PATCH] drm/i915/vlv: disable PPGTT on early revs

[Ville Syrjälä]

On Fri, Jun 13, 2014 at 08:32:38AM -0700, Jesse Barnes wrote:
> Early revs didn't have PPGTT support, so disable there.
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=79669
> References: https://bugs.freedesktop.org/show_bug.cgi?id=79670
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> ---
>  drivers/gpu/drm/i915/i915_gem_gtt.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index 8b3cde7..01287d9 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -63,6 +63,10 @@ static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt)
>  	}
>  #endif
>  
> +	/* Early VLV doesn't have this */
> +	if (IS_VALLEYVIEW(dev) && dev->pdev->revision < 0xc)

Did you mean < 0xb?

> +		return 0;
> +
>  	return HAS_ALIASING_PPGTT(dev) ? 1 : 0;
>  }
>  
> -- 
> 1.7.9.5
> 
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-- 
Ville Syrjälä
Intel OTC