From b403c8feaf4838ad54cb9c15d0ad8453aa90af50 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 23 Jan 2017 13:06:00 +0000 Subject: [PATCH] drm/i915: Remove BXT TDL state w/a This w/a (WaClearTdlStateAckDirtyBits) was only used for preproduction hw, which is no longer in use. Remove the workaround to simplify the code. Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Joonas Lahtinen Cc: Tvrtko Ursulin Link: http://patchwork.freedesktop.org/patch/msgid/20170123130601.2281-5-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- drivers/gpu/drm/i915/intel_lrc.c | 19 ------------------- 1 file changed, 19 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 029a60e8683d..32096d141d57 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1170,25 +1170,6 @@ static int gen9_init_perctx_bb(struct intel_engine_cs *engine, { uint32_t index = wa_ctx_start(wa_ctx, *offset, CACHELINE_DWORDS); - /* WaClearTdlStateAckDirtyBits:bxt */ - if (IS_BXT_REVID(engine->i915, 0, BXT_REVID_B0)) { - wa_ctx_emit(batch, index, MI_LOAD_REGISTER_IMM(4)); - - wa_ctx_emit_reg(batch, index, GEN8_STATE_ACK); - wa_ctx_emit(batch, index, _MASKED_BIT_DISABLE(GEN9_SUBSLICE_TDL_ACK_BITS)); - - wa_ctx_emit_reg(batch, index, GEN9_STATE_ACK_SLICE1); - wa_ctx_emit(batch, index, _MASKED_BIT_DISABLE(GEN9_SUBSLICE_TDL_ACK_BITS)); - - wa_ctx_emit_reg(batch, index, GEN9_STATE_ACK_SLICE2); - wa_ctx_emit(batch, index, _MASKED_BIT_DISABLE(GEN9_SUBSLICE_TDL_ACK_BITS)); - - wa_ctx_emit_reg(batch, index, GEN7_ROW_CHICKEN2); - /* dummy write to CS, mask bits are 0 to ensure the register is not modified */ - wa_ctx_emit(batch, index, 0x0); - wa_ctx_emit(batch, index, MI_NOOP); - } - wa_ctx_emit(batch, index, MI_BATCH_BUFFER_END); return wa_ctx_end(wa_ctx, *offset = index, 1); -- 2.20.1