[Intel-gfx] [PATCH 1/4] drm/i915/cnl: Introduce initial Cannonlake Workarounds.
Rodrigo Vivi
rodrigo.vivi at intel.com
Tue Aug 15 23:16:48 UTC 2017
Let's inherit workarounds from previous platforms that
according to wa_database and BSpec are still valid for
Cannonlake.
v2: Add missed workarounds.
v3: Rebase
v4: Remove bad chunk that was added to rc6 disable. (Ander)
Also remove A0 W/a that are not needed anymore.
v5: Rebase on top of CFL.
v6: Remove empty gen9_init_perctx_bb and gen9_init_indirectctx_bb
since they don't carry any gen10 related W/a. (by Oscar).
Also Remove A0 exclusive workaround.
v7: Remove more A0 exclusive workarounds. As pointed out by Oscar
many workarounds were changed to be A0 only so let's remove
them.
Cc: Oscar Mateo <oscar.mateo at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++--
drivers/gpu/drm/i915/i915_reg.h | 6 ++++++
drivers/gpu/drm/i915/intel_engine_cs.c | 19 +++++++++++++++++++
drivers/gpu/drm/i915/intel_lrc.c | 2 ++
drivers/gpu/drm/i915/intel_pm.c | 21 ++++++++++++++++++++-
5 files changed, 49 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index ef1881e256f4..7910784d2c88 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1885,12 +1885,12 @@ static void gtt_write_workarounds(struct drm_i915_private *dev_priv)
* called on driver load and after a GPU reset, so you can place
* workarounds here even if they get overwritten by GPU reset.
*/
- /* WaIncreaseDefaultTLBEntries:chv,bdw,skl,bxt,kbl,glk,cfl */
+ /* WaIncreaseDefaultTLBEntries:chv,bdw,skl,bxt,kbl,glk,cfl,cnl */
if (IS_BROADWELL(dev_priv))
I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_BDW);
else if (IS_CHERRYVIEW(dev_priv))
I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_CHV);
- else if (IS_GEN9_BC(dev_priv))
+ else if (IS_GEN9_BC(dev_priv) || IS_GEN10(dev_priv))
I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_SKL);
else if (IS_GEN9_LP(dev_priv))
I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_BXT);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index b2d785969d17..11d5cb690c9c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3806,6 +3806,12 @@ enum {
#define PWM1_GATING_DIS (1 << 13)
/*
+ * GEN10 clock gating regs
+ */
+#define SLICE_UNIT_LEVEL_CLKGATE _MMIO(0x94d4)
+#define SARBUNIT_CLKGATE_DIS (1 << 5)
+
+/*
* Display engine regs
*/
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 9ab596941372..58a235316f92 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1065,6 +1065,23 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine)
return 0;
}
+static int cnl_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ /* WaInPlaceDecompressionHang:cnl */
+ WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
+ GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+
+ /* WaEnablePreemptionGranularityControlByUMD:cnl */
+ ret= wa_ring_whitelist_reg(engine, GEN8_CS_CHICKEN1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
static int kbl_init_workarounds(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
@@ -1185,6 +1202,8 @@ int init_workarounds_ring(struct intel_engine_cs *engine)
err = glk_init_workarounds(engine);
else if (IS_COFFEELAKE(dev_priv))
err = cfl_init_workarounds(engine);
+ else if (IS_CANNONLAKE(dev_priv))
+ err = cnl_init_workarounds(engine);
else
err = 0;
if (err)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index b0738d2b2a7f..7f8b2f5cd1aa 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1175,6 +1175,8 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
return -EINVAL;
switch (INTEL_GEN(engine->i915)) {
+ case 10:
+ return 0;
case 9:
wa_bb_fn[0] = gen9_init_indirectctx_bb;
wa_bb_fn[1] = gen9_init_perctx_bb;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 66495ad36973..5d2d248d4c9e 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8254,6 +8254,23 @@ static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv,
I915_WRITE(GEN7_MISCCPCTL, misccpctl);
}
+static void cannonlake_init_clock_gating(struct drm_i915_private *dev_priv)
+{
+ /* WaEnableChickenDCPR:cnl */
+ I915_WRITE(GEN8_CHICKEN_DCPR_1,
+ I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
+
+ /* WaFbcWakeMemOn:cnl */
+ I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
+ DISP_FBC_MEMORY_WAKE);
+
+ /* WaSarbUnitClockGatingDisable:cnl (pre-prod) */
+ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
+ I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE,
+ I915_READ(SLICE_UNIT_LEVEL_CLKGATE) |
+ SARBUNIT_CLKGATE_DIS);
+}
+
static void kabylake_init_clock_gating(struct drm_i915_private *dev_priv)
{
gen9_init_clock_gating(dev_priv);
@@ -8734,7 +8751,9 @@ static void nop_init_clock_gating(struct drm_i915_private *dev_priv)
*/
void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
{
- if (IS_SKYLAKE(dev_priv))
+ if (IS_CANNONLAKE(dev_priv))
+ dev_priv->display.init_clock_gating = cannonlake_init_clock_gating;
+ else if (IS_SKYLAKE(dev_priv))
dev_priv->display.init_clock_gating = skylake_init_clock_gating;
else if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))
dev_priv->display.init_clock_gating = kabylake_init_clock_gating;
--
2.13.2
More information about the Intel-gfx
mailing list