On Wed, 2024-10-09 at 21:22 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> TGL+ should no longer need any VT-d scanout workarounds.
> Don't apply any.
>
> Not 100% sure whether pre-SNB might also suffer from this. The
> workaround did originate on SNB but who knows if it was just
> never caught before that. Not that I ever managed to enable
> VT-d any older hardware. Last time I tried on my ILK it ate
> the disk!
Any possibility to have bspec reference or is it just some offline
documentation?
BR,
Jouni Högander
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 2afd10bbe7b8..7c25060e5f32 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -8694,5 +8694,5 @@ void intel_hpd_poll_fini(struct
> drm_i915_private *i915)
>
> bool intel_scanout_needs_vtd_wa(struct drm_i915_private *i915)
> {
> - return DISPLAY_VER(i915) >= 6 && i915_vtd_active(i915);
> + return IS_DISPLAY_VER(i915, 6, 11) && i915_vtd_active(i915);
> }
