From: Chris Wilson chris@chris-wilson.co.uk
commit fd2599bda5a989c3332f4956fd7760ec32bd51ee upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so that we remember to apply them after a GT reset, and that they are included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala mika.kuoppala@linux.intel.com Cc: stable@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-4-chris@c... (cherry picked from commit c3b93a943f2c9ee4a106db100a2fc3b2f126bfc5) Signed-off-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/i915/gt/intel_workarounds.c | 41 ++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_pm.c | 33 ---------------------- 2 files changed, 41 insertions(+), 33 deletions(-)
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -704,6 +704,45 @@ int intel_engine_emit_ctx_wa(struct i915 }
static void +snb_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal) +{ + /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ + wa_masked_en(wal, + _3D_CHICKEN, + _3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB); + + /* WaDisable_RenderCache_OperationalFlush:snb */ + wa_masked_dis(wal, CACHE_MODE_0, RC_OP_FLUSH_ENABLE); + + /* + * BSpec recommends 8x4 when MSAA is used, + * however in practice 16x4 seems fastest. + * + * Note that PS/WM thread counts depend on the WIZ hashing + * disable bit, which we don't touch here, but it's good + * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). + */ + wa_add(wal, + GEN6_GT_MODE, 0, + _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4), + GEN6_WIZ_HASHING_16x4); + + wa_masked_dis(wal, CACHE_MODE_0, CM0_STC_EVICT_DISABLE_LRA_SNB); + + wa_masked_en(wal, + _3D_CHICKEN3, + /* WaStripsFansDisableFastClipPerformanceFix:snb */ + _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL | + /* + * Bspec says: + * "This bit must be set if 3DSTATE_CLIP clip mode is set + * to normal and 3DSTATE_SF number of SF output attributes + * is more than 16." + */ + _3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH); +} + +static void ivb_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal) { /* WaDisableEarlyCull:ivb */ @@ -1084,6 +1123,8 @@ gt_init_workarounds(struct drm_i915_priv hsw_gt_workarounds_init(i915, wal); else if (IS_IVYBRIDGE(i915)) ivb_gt_workarounds_init(i915, wal); + else if (IS_GEN(i915, 6)) + snb_gt_workarounds_init(i915, wal); else if (INTEL_GEN(i915) <= 8) return; else --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6665,27 +6665,6 @@ static void gen6_init_clock_gating(struc I915_READ(ILK_DISPLAY_CHICKEN2) | ILK_ELPIN_409_SELECT);
- /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ - I915_WRITE(_3D_CHICKEN, - _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); - - /* WaDisable_RenderCache_OperationalFlush:snb */ - I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); - - /* - * BSpec recoomends 8x4 when MSAA is used, - * however in practice 16x4 seems fastest. - * - * Note that PS/WM thread counts depend on the WIZ hashing - * disable bit, which we don't touch here, but it's good - * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). - */ - I915_WRITE(GEN6_GT_MODE, - _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); - - I915_WRITE(CACHE_MODE_0, - _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); - I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | @@ -6708,18 +6687,6 @@ static void gen6_init_clock_gating(struc GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
- /* WaStripsFansDisableFastClipPerformanceFix:snb */ - I915_WRITE(_3D_CHICKEN3, - _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL)); - - /* - * Bspec says: - * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and - * 3DSTATE_SF number of SF output attributes is more than 16." - */ - I915_WRITE(_3D_CHICKEN3, - _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH)); - /* * According to the spec the following bits should be * set in order to enable memory self-refresh and fbc: