This patch adds the workaround to disable IC prefetch.
Original Author: Madhumitha Tolakanhalli Pradeep
Signed-off-by: Radhakrishna Sripada <[email protected]>
---
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
