Shader feature to prefetch binding tables does not support 16:6 18:8 BTP formats. Enabling fault handling could result in hangs with faults. Disabling demand prefetch would disable binding table prefetch.
V2: Fix the stepping rivision to B0(Mika) References: HSDES#1406609255, HSDES#1406573985 Cc: Mika Kuoppala <[email protected]> Signed-off-by: Radhakrishna Sripada <[email protected]> --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c8a187d8db0f..fa020425754f 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7413,6 +7413,9 @@ enum { #define GEN9_SLICE_COMMON_ECO_CHICKEN1 _MMIO(0x731c) #define GEN11_STATE_CACHE_REDIRECT_TO_CS (1 << 11) +#define GEN7_SARCHKMD _MMIO(0xB000) +#define GEN7_DISABLE_DEMAND_PREFETCH (1 << 31) + #define GEN7_L3SQCREG1 _MMIO(0xB010) #define VLV_B0_WA_L3SQCREG1_VALUE 0x00D30000 diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c index 65cd36cd2957..cf4f4c1f86ab 100644 --- a/drivers/gpu/drm/i915/intel_workarounds.c +++ b/drivers/gpu/drm/i915/intel_workarounds.c @@ -905,6 +905,12 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv) I915_WRITE(GAMT_CHKN_BIT_REG, I915_READ(GAMT_CHKN_BIT_REG) | GAMT_CHKN_DISABLE_L3_COH_PIPE); + + /* Wa_1406609255:icl (pre-prod) */ + if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_B0)) + I915_WRITE(GEN7_SARCHKMD, + I915_READ(GEN7_SARCHKMD) | + GEN7_DISABLE_DEMAND_PREFETCH); } void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv) -- 2.9.3 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
