From: Oscar Mateo <oscar.mateo@intel.com>
Date: Tue, 8 May 2018 14:29:23 -0700
Subject: drm/i915/icl: Introduce initial Icelake Workarounds
Git-commit: cc38cae7c4e9350c93aa2da506086415fecd6e4a
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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@intel.com>
- Squashed with this patch:
drm/i915/icl: WaForceEnableNonCoherent
from Oscar Mateo <oscar.mateo@intel.com>
- 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
v8: s/ICL_HDC_CHICKEN0/ICL_HDC_MODE (Mika)
v9:
- C, not lisp (Chris)
- WaIncreaseDefaultTLBEntries is the same for GEN > 9_LP (Tvrtko)
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525814984-20039-2-git-send-email-oscar.mateo@intel.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/i915_drv.h | 9 ++++++
drivers/gpu/drm/i915/i915_gem_gtt.c | 6 ++--
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, 69 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2470,6 +2470,15 @@ intel_info(const struct drm_i915_private
#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
+#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
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2138,15 +2138,15 @@ static void gtt_write_workarounds(struct
* 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))
- 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);
+ else if (INTEL_GEN(dev_priv) >= 9)
+ I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_SKL);
/*
* To support 64K PTEs we need to first enable the use of the
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7238,6 +7238,7 @@ enum {
/* GEN8 chicken */
#define HDC_CHICKEN0 _MMIO(0x7300)
#define CNL_HDC_CHICKEN0 _MMIO(0xE5F0)
+#define ICL_HDC_MODE _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)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1682,6 +1682,8 @@ static int intel_init_workaround_bb(stru
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;
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9190,7 +9190,9 @@ static void nop_init_clock_gating(struct
*/
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;
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -139,7 +139,9 @@ fw_domain_wait_ack_with_fallback(const s
* 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.
*/
pass = 1;
@@ -1394,7 +1396,8 @@ static void intel_uncore_fw_domains_init
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,
--- 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(stru
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);
+
+ /* 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_MODE, HDC_FORCE_NON_COHERENT);
+
+ 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 dr
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(str
_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);
+}
+
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 d
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 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
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));