On 04/06/2017 07:15 PM, Rodrigo Vivi wrote:
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
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
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 | 26 ++++++++++++++++++++
drivers/gpu/drm/i915/intel_lrc.c | 1 +
drivers/gpu/drm/i915/intel_pm.c | 44 +++++++++++++++++++++++++++++-----
5 files changed, 73 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 8bab4ae..3c8457d 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1881,12 +1881,12 @@ 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 */
+ /* WaIncreaseDefaultTLBEntries:chv,bdw,skl,bxt,kbl,glk,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 efbbeb8..a09a0d7 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3424,6 +3424,12 @@ 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 854e8e0..da819a7 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -946,6 +946,30 @@ 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;
+
+ /* WaAllowUMDToModifyHDCChicken1:cnl (pre-prod) */
+ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0)) {
+ ret = wa_ring_whitelist_reg(engine, GEN8_HDC_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;
@@ -1032,6 +1056,8 @@ int init_workarounds_ring(struct intel_engine_cs *engine)
err = kbl_init_workarounds(engine);
else if (IS_GEMINILAKE(dev_priv))
err = glk_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 0dc1cc4..23e2bed 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1093,6 +1093,7 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
return -EINVAL;
switch (INTEL_GEN(engine->i915)) {
+ case 10:
Are you sure this is what you want? gen9_init_perctx_bb is just an empty
batchbuffer, but gen9_init_indirectctx_bb introduces some WAs that do
not apply to CNL (WaFlushCoherentL3CacheLinesAtContextSwitch,
WaClearSlmSpaceAtContextSwitch, etc...)
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 55e1e88..b6ecab9 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -58,24 +58,24 @@
static void gen9_init_clock_gating(struct drm_i915_private *dev_priv)
{
- /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl */
+ /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cnl */
I915_WRITE(CHICKEN_PAR1_1,
I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP);
I915_WRITE(GEN8_CONFIG0,
I915_READ(GEN8_CONFIG0) | GEN9_DEFAULT_FIXES);
- /* WaEnableChickenDCPR:skl,bxt,kbl,glk */
+ /* WaEnableChickenDCPR:skl,bxt,kbl,glk,cnl */
I915_WRITE(GEN8_CHICKEN_DCPR_1,
I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
- /* WaFbcTurnOffFbcWatermark:skl,bxt,kbl */
- /* WaFbcWakeMemOn:skl,bxt,kbl,glk */
+ /* WaFbcTurnOffFbcWatermark:skl,bxt,kbl,cnl */
+ /* WaFbcWakeMemOn:skl,bxt,kbl,glk,cnl */
I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
DISP_FBC_WM_DIS |
DISP_FBC_MEMORY_WAKE);
- /* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl */
+ /* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl,cnl */
I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
ILK_DPFC_DISABLE_DUMMY0);
}
@@ -5428,8 +5428,19 @@ int intel_set_rps(struct drm_i915_private *dev_priv, u8 val)
static void gen9_disable_rc6(struct drm_i915_private *dev_priv)
{
+ gen9_init_clock_gating(dev_priv);
+
I915_WRITE(GEN6_RC_CONTROL, 0);
I915_WRITE(GEN9_PG_ENABLE, 0);
+
+ /* WaDisableGamClockGating:cnl (pre-prod) */
+ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0))
+ I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
+ GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
+
+ /* WaFbcNukeOnHostModify:cnl */
+ I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
+ ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
}
static void gen9_disable_rps(struct drm_i915_private *dev_priv)
@@ -7474,6 +7485,25 @@ 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)
+{
+ gen9_init_clock_gating(dev_priv);
+
+ /* WaDisableGamClockGating:cnl (pre-prod) */
+ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0))
+ I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
+ GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
+
+ /* WaFbcNukeOnHostModify:cnl */
+ I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
+ ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
+
+ /* 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);
@@ -7954,7 +7984,9 @@ 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))
dev_priv->display.init_clock_gating = kabylake_init_clock_gating;
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