On Thu, Jan 19, 2023 at 05:06:39PM -0800, Radhakrishna Sripada wrote: > This patch adds the workaround to disable IC prefetch. > > Original Author: Madhumitha Tolakanhalli Pradeep ditto > Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx> > --- > drivers/gpu/drm/i915/gt/intel_workarounds.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c > index c52c5f9ad9ce..47ff4ca2bd61 100644 > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c > @@ -1677,6 +1677,10 @@ xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) > IS_MTL_GRAPHICS_STEP(gt->i915, P, STEP_A0, STEP_B0)) > wa_mcr_write_clr(wal, SARB_CHICKEN1, COMP_CKN_IN); > > + /* Wa_22015279794: mtl-p[a0] */ > + if (IS_MTL_GRAPHICS_STEP(gt->i915, P, STEP_A0, STEP_B0)) > + wa_mcr_masked_en(wal, GEN10_CACHE_MODE_SS, > + ENABLE_PREFETCH_INTO_IC); > /* > * Unlike older platforms, we no longer setup implicit steering here; > * all MCR accesses are explicitly steered. > -- > 2.34.1 >
