drm/i915: Remove cnl pre-prod workarounds

Remove all the stepping dependent cnl workarounds. Bspec lists
more steppings than this so presumably these are classed as
pre-production. And this is cnl after all so no one should
really care anyway.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200430125822.21985-2-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 1c1923e..ab675d3 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -113,7 +113,6 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
        struct intel_uncore *uncore = rc6_to_uncore(rc6);
        struct intel_engine_cs *engine;
        enum intel_engine_id id;
-       u32 rc6_mode;
 
        /* 2b: Program RC6 thresholds.*/
        if (INTEL_GEN(rc6_to_i915(rc6)) >= 10) {
@@ -165,16 +164,11 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
        /* 3a: Enable RC6 */
        set(uncore, GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */
 
-       /* WaRsUseTimeoutMode:cnl (pre-prod) */
-       if (IS_CNL_REVID(rc6_to_i915(rc6), CNL_REVID_A0, CNL_REVID_C0))
-               rc6_mode = GEN7_RC_CTL_TO_MODE;
-       else
-               rc6_mode = GEN6_RC_CTL_EI_MODE(1);
 
        rc6->ctl_enable =
                GEN6_RC_CTL_HW_ENABLE |
                GEN6_RC_CTL_RC6_ENABLE |
-               rc6_mode;
+               GEN6_RC_CTL_EI_MODE(1);
 
        /*
         * WaRsDisableCoarsePowerGating:skl,cnl

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index adddc5c..aa90e6b 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -485,25 +485,14 @@ static void cfl_ctx_workarounds_init(struct intel_engine_cs *engine,
 static void cnl_ctx_workarounds_init(struct intel_engine_cs *engine,
                                     struct i915_wa_list *wal)
 {
-       struct drm_i915_private *i915 = engine->i915;
-
        /* WaForceContextSaveRestoreNonCoherent:cnl */
        WA_SET_BIT_MASKED(CNL_HDC_CHICKEN0,
                          HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT);
 
-       /* WaThrottleEUPerfToAvoidTDBackPressure:cnl(pre-prod) */
-       if (IS_CNL_REVID(i915, CNL_REVID_B0, CNL_REVID_B0))
-               WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, THROTTLE_12_5);
-
        /* WaDisableReplayBufferBankArbitrationOptimization:cnl */
        WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
                          GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
 
-       /* WaDisableEnhancedSBEVertexCaching:cnl (pre-prod) */
-       if (IS_CNL_REVID(i915, 0, CNL_REVID_B0))
-               WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
-                                 GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE);
-
        /* WaPushConstantDereferenceHoldDisable:cnl */
        WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2, PUSH_CONSTANT_DEREF_DISABLE);
 
@@ -872,12 +861,6 @@ cnl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
 {
        wa_init_mcr(i915, wal);
 
-       /* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
-       if (IS_CNL_REVID(i915, CNL_REVID_B0, CNL_REVID_B0))
-               wa_write_or(wal,
-                           GAMT_CHKN_BIT_REG,
-                           GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT);
-
        /* WaInPlaceDecompressionHang:cnl */
        wa_write_or(wal,
                    GEN9_GAMT_ECO_REG_RW_IA,

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c26f874..a4830a5 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5255,10 +5255,6 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state,
                                trans_offset_b;
        } else {
                res_blocks = wm0_sel_res_b + trans_offset_b;
-
-               /* WA BUG:1938466 add one block for non y-tile planes */
-               if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0))
-                       res_blocks += 1;
        }
 
        /*
@@ -6978,9 +6974,6 @@ static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
        val = I915_READ(SLICE_UNIT_LEVEL_CLKGATE);
        /* ReadHitWriteOnlyDisable:cnl */
        val |= RCCUNIT_CLKGATE_DIS;
-       /* WaSarbUnitClockGatingDisable:cnl (pre-prod) */
-       if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
-               val |= SARBUNIT_CLKGATE_DIS;
        I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, val);
 
        /* Wa_2201832410:cnl */

diff --git a/drivers/gpu/drm/i915/intel_wopcm.c b/drivers/gpu/drm/i915/intel_wopcm.c
index 6942487..ec77659 100644 (file)
--- a/drivers/gpu/drm/i915/intel_wopcm.c
+++ b/drivers/gpu/drm/i915/intel_wopcm.c
@@ -149,8 +149,7 @@ static bool check_hw_restrictions(struct drm_i915_private *i915,
                                                     guc_wopcm_size))
                return false;
 
-       if ((IS_GEN(i915, 9) ||
-            IS_CNL_REVID(i915, CNL_REVID_A0, CNL_REVID_A0)) &&
+       if (IS_GEN(i915, 9) &&
            !gen9_check_huc_fw_fits(i915, guc_wopcm_size, huc_fw_size))
                return false;