On 04/26/2018 08:01 AM, Mika Kuoppala wrote:
Oscar Mateo <oscar.mateo@xxxxxxxxx> writes:
Inherit workarounds from previous platforms that are still valid for
Icelake.
v2: GEN7_ROW_CHICKEN2 is masked
v3:
- Since it has been fixed already in upstream, removed the TODO
comment about WA_SET_BIT for WaInPlaceDecompressionHang.
- Squashed with this patch:
drm/i915/icl: add icelake_init_clock_gating()
from Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
- Squashed with this patch:
drm/i915/icl: WaForceEnableNonCoherent
from Oscar Mateo <oscar.mateo@xxxxxxxxx>
- WaPushConstantDereferenceHoldDisable is now Wa_1604370585 and
applies to B0 as well.
- WaPipeControlBefore3DStateSamplePattern WABB was being applied
to ICL incorrectly.
v4:
- Wrap the commit message
- s/dev_priv/p to please checkpatch
v5: Rebased on top of the WA refactoring
v6: Rebased on top of further whitelist registers refactoring (Michel)
v7: Added WaRsForcewakeAddDelayForAck
Cc: Tomasz Lis <tomasz.lis@xxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 9 +++++++
drivers/gpu/drm/i915/i915_gem_gtt.c | 4 +--
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_lrc.c | 2 ++
drivers/gpu/drm/i915/intel_pm.c | 4 ++-
drivers/gpu/drm/i915/intel_uncore.c | 7 +++--
drivers/gpu/drm/i915/intel_workarounds.c | 46 ++++++++++++++++++++++++++++++++
7 files changed, 68 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0286911..1dc157f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2462,6 +2462,15 @@ static inline unsigned int i915_sg_segment_size(void)
#define IS_CNL_REVID(p, since, until) \
(IS_CANNONLAKE(p) && IS_REVID(p, since, until))
+#define ICL_REVID_A0 0x0
+#define ICL_REVID_A2 0x1
Just noted that for some reason bspec puts A0 and A2 under
same revid. Bspec err?
That's what I hope. I have opened a bug against the BSpec to be 100% sure.
+#define ICL_REVID_B0 0x3
+#define ICL_REVID_B2 0x4
+#define ICL_REVID_C0 0x5
+
+#define IS_ICL_REVID(p, since, until) \
+ (IS_ICELAKE(p) && IS_REVID(p, since, until))
+
/*
* The genX designation typically refers to the render engine, so render
* capability related checks should use IS_GEN, while display and other checks
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 21d72f6..221b873 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2140,12 +2140,12 @@ 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,cnl */
+ /* WaIncreaseDefaultTLBEntries:chv,bdw,skl,bxt,kbl,glk,cfl,cnl,icl */
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) || IS_GEN10(dev_priv))
+ else if (IS_GEN9_BC(dev_priv) || IS_GEN10(dev_priv) || IS_GEN11(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 fb10602..f2ee225 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7203,6 +7203,7 @@ enum {
/* GEN8 chicken */
#define HDC_CHICKEN0 _MMIO(0x7300)
#define CNL_HDC_CHICKEN0 _MMIO(0xE5F0)
+#define ICL_HDC_CHICKEN0 _MMIO(0xE5F4)
#define HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE (1<<15)
#define HDC_FENCE_DEST_SLM_DISABLE (1<<14)
#define HDC_DONOT_FETCH_MEM_WHEN_MASKED (1<<11)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 029901a..2d6572a 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1636,6 +1636,8 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
return -EINVAL;
switch (INTEL_GEN(engine->i915)) {
+ case 11:
+ return 0;
case 10:
wa_bb_fn[0] = gen10_init_indirectctx_bb;
wa_bb_fn[1] = NULL;
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 4baab85..3b7d804 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9123,7 +9123,9 @@ 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_CANNONLAKE(dev_priv))
+ if (IS_ICELAKE(dev_priv))
+ dev_priv->display.init_clock_gating = nop_init_clock_gating;
+ else if (IS_CANNONLAKE(dev_priv))
dev_priv->display.init_clock_gating = cnl_init_clock_gating;
else if (IS_COFFEELAKE(dev_priv))
dev_priv->display.init_clock_gating = cfl_init_clock_gating;
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index d6e20f0..448293e 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -139,7 +139,9 @@ enum ack_type {
* in the hope that the original ack will be delivered along with
* the fallback ack.
*
- * This workaround is described in HSDES #1604254524
+ * This workaround is described in HSDES #1604254524 and it's known as:
+ * WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl
+ * although the name is a bit misleading.
Just for the record:
When I implemented this there was recommendation to do both, delaying
for ack and then this method of using a reserver bit. My interpretation
was that the delay was used as a first weapon to combat the issue. And
then later, reserve bit method appeared.
I did not use WaRsForcewakeAddDelayForAck as I thought that this will be
named differently. And also I think this method is a superset,
making delaying irrelevant. As we fallback to reserve is we miss ack
so no need to delay before polling. And adding delay to hotpath should
be the last resort anyways.
I think this is the evolution of WaRsForcewakeAddDelayForAck
(v2) and there is no better name, we should keep it.
Yes, I read the mailing lists comments about this. AFAICT, there is no
better name.
*/
pass = 1;
@@ -1394,7 +1396,8 @@ static void intel_uncore_fw_domains_init(struct drm_i915_private *dev_priv)
if (INTEL_GEN(dev_priv) >= 11) {
int i;
- dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
+ dev_priv->uncore.funcs.force_wake_get =
+ fw_domains_get_with_fallback;
dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
FORCEWAKE_RENDER_GEN9,
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index ec9d340..3f00623 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -441,6 +441,27 @@ static int cnl_ctx_workarounds_init(struct drm_i915_private *dev_priv)
return 0;
}
+static int icl_ctx_workarounds_init(struct drm_i915_private *dev_priv)
+{
+ /* Wa_1604370585:icl (pre-prod)
+ * Formerly known as WaPushConstantDereferenceHoldDisable
+ */
+ if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_B0))
+ WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
+ PUSH_CONSTANT_DEREF_DISABLE);
Inherited from CNL and had to check if we have that on cnl. We do.
+
+ /* WaForceEnableNonCoherent:icl
+ * This is not the same workaround as in early Gen9 platforms, where
+ * lacking this could cause system hangs, but coherency performance
+ * overhead is high and only a few compute workloads really need it
+ * (the register is whitelisted in hardware now, so UMDs can opt in
+ * for coherency if they have a good reason).
+ */
+ WA_SET_BIT_MASKED(ICL_HDC_CHICKEN0, HDC_FORCE_NON_COHERENT);
Right, but the register name should be ICL_HDC_MODE.
ACK
+
+ return 0;
+}
+
int intel_ctx_workarounds_init(struct drm_i915_private *dev_priv)
{
int err = 0;
@@ -465,6 +486,8 @@ int intel_ctx_workarounds_init(struct drm_i915_private *dev_priv)
err = cfl_ctx_workarounds_init(dev_priv);
else if (IS_CANNONLAKE(dev_priv))
err = cnl_ctx_workarounds_init(dev_priv);
+ else if (IS_ICELAKE(dev_priv))
+ err = icl_ctx_workarounds_init(dev_priv);
else
MISSING_CASE(INTEL_GEN(dev_priv));
if (err)
@@ -663,6 +686,21 @@ static void cnl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
_MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL));
}
+static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
+{
+ /* This is not an Wa. Enable for better image quality */
+ I915_WRITE(_3D_CHICKEN3,
+ _MASKED_BIT_ENABLE(_3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE));
+
+ /* WaInPlaceDecompressionHang:icl */
+ I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA, (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+ GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
+
+ /* WaPipelineFlushCoherentLines:icl */
+ I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
+ GEN8_LQSC_FLUSH_COHERENT_LINES));
Didn't find a HSDES entry for this. The workaround name and the reg/bit
matches tho.
But the real question in here is that do we need to set this through
indirect bb like we do with gen[8,9].
And just to note that cnl is missing this too. But that can be done
as a followup when we first figure out that should we use the indirect
bb for all >= gen8.
-Mika
Hmmmm... looking at it more carefully: isn't that a slightly different
WA: WaPipelineFlushCoherentLines (not needed starting CNL)?
This is equivalent to a different WA: WaOCLCoherentLineFlush.
But indeed, it seems to be required for CNL as well. In fact, I'm pretty
sure I added it to this patch because I saw it in CNL. Did it get lost?
+}
+
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
{
if (INTEL_GEN(dev_priv) < 8)
@@ -683,6 +721,8 @@ void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
cfl_gt_workarounds_apply(dev_priv);
else if (IS_CANNONLAKE(dev_priv))
cnl_gt_workarounds_apply(dev_priv);
+ else if (IS_ICELAKE(dev_priv))
+ icl_gt_workarounds_apply(dev_priv);
else
MISSING_CASE(INTEL_GEN(dev_priv));
}
@@ -761,6 +801,10 @@ static void cnl_whitelist_build(struct whitelist *w)
whitelist_reg(w, GEN8_CS_CHICKEN1);
}
+static void icl_whitelist_build(struct whitelist *w)
+{
+}
+
static struct whitelist *whitelist_build(struct intel_engine_cs *engine,
struct whitelist *w)
{
@@ -789,6 +833,8 @@ static struct whitelist *whitelist_build(struct intel_engine_cs *engine,
cfl_whitelist_build(w);
else if (IS_CANNONLAKE(i915))
cnl_whitelist_build(w);
+ else if (IS_ICELAKE(i915))
+ icl_whitelist_build(w);
else
MISSING_CASE(INTEL_GEN(i915));
--
1.9.1
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