* creation to have a "primed golden context", i.e. a context image that
* already contains the changes needed to all the registers.
*
+ * Context workarounds should be implemented in the \*_ctx_workarounds_init()
+ * variants respective to the targeted platforms.
+ *
* - Engine workarounds: the list of these WAs is applied whenever the specific
* engine is reset. It's also possible that a set of engine classes share a
* common power domain and they are reset together. This happens on some
* saves/restores their values before/after the reset takes place. See
* ``drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c`` for reference.
*
+ * Workarounds for registers specific to RCS and CCS should be implemented in
+ * rcs_engine_wa_init() and ccs_engine_wa_init(), respectively; those for
+ * registers belonging to BCS, VCS or VECS should be implemented in
+ * xcs_engine_wa_init(). Workarounds for registers not belonging to a specific
+ * engine's MMIO range but that are part of of the common RCS/CCS reset domain
+ * should be implemented in general_render_compute_wa_init().
+ *
* - GT workarounds: the list of these WAs is applied whenever these registers
* revert to their default values: on GPU reset, suspend/resume [1]_, etc.
*
+ * GT workarounds should be implemented in the \*_gt_workarounds_init()
+ * variants respective to the targeted platforms.
+ *
* - Register whitelist: some workarounds need to be implemented in userspace,
* but need to touch privileged registers. The whitelist in the kernel
* instructs the hardware to allow the access to happen. From the kernel side,
* this is just a special case of a MMIO workaround (as we write the list of
* these to/be-whitelisted registers to some special HW registers).
*
+ * Register whitelisting should be done in the \*_whitelist_build() variants
+ * respective to the targeted platforms.
+ *
* - Workaround batchbuffers: buffers that get executed automatically by the
* hardware on every HW context restore. These buffers are created and
* programmed in the default context so the hardware always go through those
wa_write_clr_set(wal, reg, ~0, set);
}
+static void
+wa_mcr_write(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 set)
+{
+ wa_mcr_write_clr_set(wal, reg, ~0, set);
+}
+
static void
wa_write_or(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
{
/* Wa_18018764978:dg2 */
if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_C0, STEP_FOREVER) ||
IS_DG2_G11(engine->i915) || IS_DG2_G12(engine->i915))
- wa_masked_en(wal, PSS_MODE2, SCOREBOARD_STALL_FLUSH_CONTROL);
+ wa_mcr_masked_en(wal, XEHP_PSS_MODE2, SCOREBOARD_STALL_FLUSH_CONTROL);
/* Wa_15010599737:dg2 */
wa_mcr_masked_en(wal, CHICKEN_RASTER_1, DIS_SF_ROUND_NEAREST_EVEN);
wa_masked_en(wal, CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE);
}
+static void mtl_ctx_workarounds_init(struct intel_engine_cs *engine,
+ struct i915_wa_list *wal)
+{
+ struct drm_i915_private *i915 = engine->i915;
+
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0)) {
+ /* Wa_14014947963 */
+ wa_masked_field_set(wal, VF_PREEMPTION,
+ PREEMPTION_VERTEX_COUNT, 0x4000);
+
+ /* Wa_16013271637 */
+ wa_mcr_masked_en(wal, XEHP_SLICE_COMMON_ECO_CHICKEN1,
+ MSC_MSAA_REODER_BUF_BYPASS_DISABLE);
+
+ /* Wa_18019627453 */
+ wa_mcr_masked_en(wal, VFLSKPD, VF_PREFETCH_TLB_DIS);
+
+ /* Wa_18018764978 */
+ wa_mcr_masked_en(wal, XEHP_PSS_MODE2, SCOREBOARD_STALL_FLUSH_CONTROL);
+ }
+
+ /* Wa_18019271663 */
+ wa_masked_en(wal, CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE);
+}
+
static void fakewa_disable_nestedbb_mode(struct intel_engine_cs *engine,
struct i915_wa_list *wal)
{
if (engine->class != RENDER_CLASS)
goto done;
- if (IS_PONTEVECCHIO(i915))
+ if (IS_METEORLAKE(i915))
+ mtl_ctx_workarounds_init(engine, wal);
+ else if (IS_PONTEVECCHIO(i915))
; /* noop; none at this time */
else if (IS_DG2(i915))
dg2_ctx_workarounds_init(engine, wal);
/* Wa_14011060649:xehpsdv */
wa_14011060649(gt, wal);
+
+ /* Wa_14012362059:xehpsdv */
+ wa_mcr_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
+
+ /* Wa_14014368820:xehpsdv */
+ wa_mcr_write_or(wal, XEHP_GAMCNTRL_CTRL,
+ INVALIDATION_BROADCAST_MODE_DIS | GLOBAL_INVALIDATION_MODE);
}
static void
DSS_ROUTER_CLKGATE_DIS);
}
+ if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_B0) ||
+ IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_B0)) {
+ /* Wa_14012362059:dg2 */
+ wa_mcr_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
+ }
+
if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_B0)) {
/* Wa_14010948348:dg2_g10 */
wa_write_or(wal, UNSLCGCTL9430, MSQDUNIT_CLKGATE_DIS);
/* Wa_14011028019:dg2_g10 */
wa_mcr_write_or(wal, SSMCGCTL9530, RTFUNIT_CLKGATE_DIS);
+
+ /* Wa_14010680813:dg2_g10 */
+ wa_mcr_write_or(wal, XEHP_GAMSTLB_CTRL,
+ CONTROL_BLOCK_CLKGATE_DIS |
+ EGRESS_BLOCK_CLKGATE_DIS |
+ TAG_BLOCK_CLKGATE_DIS);
}
/* Wa_14014830051:dg2 */
wa_mcr_write_or(wal, XEHP_SQCM, EN_32B_ACCESS);
/* Wa_14015795083 */
- wa_mcr_write_clr(wal, GEN8_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
+ wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
+
+ /* Wa_18018781329 */
+ wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, XEHP_VDBX_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, XEHP_VEBX_MOD_CTRL, FORCE_MISS_FTLB);
+
+ /* Wa_1509235366:dg2 */
+ wa_mcr_write_or(wal, XEHP_GAMCNTRL_CTRL,
+ INVALIDATION_BROADCAST_MODE_DIS | GLOBAL_INVALIDATION_MODE);
}
static void
pvc_init_mcr(gt, wal);
/* Wa_14015795083 */
- wa_mcr_write_clr(wal, GEN8_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
+ wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
+
+ /* Wa_18018781329 */
+ wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, XEHP_VDBX_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, XEHP_VEBX_MOD_CTRL, FORCE_MISS_FTLB);
}
static void
xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
{
- /* FIXME: Actual workarounds will be added in future patch(es) */
+ if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(gt->i915, P, STEP_A0, STEP_B0)) {
+ /* Wa_14014830051 */
+ wa_mcr_write_clr(wal, SARB_CHICKEN1, COMP_CKN_IN);
+
+ /* Wa_18018781329 */
+ wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
+ }
/*
* Unlike older platforms, we no longer setup implicit steering here;
static void
xelpmp_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
{
- /* FIXME: Actual workarounds will be added in future patch(es) */
+ if (IS_MTL_MEDIA_STEP(gt->i915, STEP_A0, STEP_B0)) {
+ /*
+ * Wa_18018781329
+ *
+ * Note that although these registers are MCR on the primary
+ * GT, the media GT's versions are regular singleton registers.
+ */
+ wa_write_or(wal, XELPMP_GSC_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_write_or(wal, XELPMP_VDBX_MOD_CTRL, FORCE_MISS_FTLB);
+ wa_write_or(wal, XELPMP_VEBX_MOD_CTRL, FORCE_MISS_FTLB);
+ }
debug_dump_steering(gt);
}
fw = wal_get_fw_for_rmw(uncore, wal);
- spin_lock_irqsave(&uncore->lock, flags);
+ intel_gt_mcr_lock(gt, &flags);
+ spin_lock(&uncore->lock);
intel_uncore_forcewake_get__locked(uncore, fw);
for (i = 0, wa = wal->list; i < wal->count; i++, wa++) {
}
intel_uncore_forcewake_put__locked(uncore, fw);
- spin_unlock_irqrestore(&uncore->lock, flags);
+ spin_unlock(&uncore->lock);
+ intel_gt_mcr_unlock(gt, flags);
}
void intel_gt_apply_workarounds(struct intel_gt *gt)
fw = wal_get_fw_for_rmw(uncore, wal);
- spin_lock_irqsave(&uncore->lock, flags);
+ intel_gt_mcr_lock(gt, &flags);
+ spin_lock(&uncore->lock);
intel_uncore_forcewake_get__locked(uncore, fw);
for (i = 0, wa = wal->list; i < wal->count; i++, wa++)
wal->name, from);
intel_uncore_forcewake_put__locked(uncore, fw);
- spin_unlock_irqrestore(&uncore->lock, flags);
+ spin_unlock(&uncore->lock);
+ intel_gt_mcr_unlock(gt, flags);
return ok;
}
wa_init_start(w, engine->gt, "whitelist", engine->name);
- if (IS_PONTEVECCHIO(i915))
+ if (IS_METEORLAKE(i915))
+ ; /* noop; none at this time */
+ else if (IS_PONTEVECCHIO(i915))
pvc_whitelist_build(engine);
else if (IS_DG2(i915))
dg2_whitelist_build(engine);
{
struct drm_i915_private *i915 = engine->i915;
- if (IS_DG2(i915)) {
- /* Wa_1509235366:dg2 */
- wa_write_or(wal, GEN12_GAMCNTRL_CTRL, INVALIDATION_BROADCAST_MODE_DIS |
- GLOBAL_INVALIDATION_MODE);
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0)) {
+ /* Wa_22014600077 */
+ wa_mcr_masked_en(wal, GEN10_CACHE_MODE_SS,
+ ENABLE_EU_COUNT_FOR_TDL_FLUSH);
}
- if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) {
- /* Wa_14013392000:dg2_g11 */
- wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, GEN12_ENABLE_LARGE_GRF_MODE);
- }
-
- if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0) ||
+ IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
IS_DG2_G11(i915) || IS_DG2_G12(i915)) {
- /* Wa_1509727124:dg2 */
+ /* Wa_1509727124 */
wa_mcr_masked_en(wal, GEN10_SAMPLER_MODE,
SC_DISABLE_POWER_OPTIMIZATION_EBB);
}
+ if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
+ IS_DG2_G11(i915) || IS_DG2_G12(i915) ||
+ IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0)) {
+ /* Wa_22012856258 */
+ wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2,
+ GEN12_DISABLE_READ_SUPPRESSION);
+ }
+
+ if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) {
+ /* Wa_14013392000:dg2_g11 */
+ wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, GEN12_ENABLE_LARGE_GRF_MODE);
+ }
+
if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0) ||
IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) {
/* Wa_14012419201:dg2 */
GEN12_DISABLE_HDR_PAST_PAYLOAD_HOLD_FIX);
}
- if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_C0) ||
- IS_DG2_G11(i915)) {
- /*
- * Wa_22012826095:dg2
- * Wa_22013059131:dg2
- */
- wa_mcr_write_clr_set(wal, LSC_CHICKEN_BIT_0_UDW,
- MAXREQS_PER_BANK,
- REG_FIELD_PREP(MAXREQS_PER_BANK, 2));
-
- /* Wa_22013059131:dg2 */
- wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0,
- FORCE_1_SUB_MESSAGE_PER_FRAGMENT);
- }
-
/* Wa_1308578152:dg2_g10 when first gslice is fused off */
if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_C0) &&
needs_wa_1308578152(engine)) {
if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
IS_DG2_G11(i915) || IS_DG2_G12(i915)) {
- /* Wa_22013037850:dg2 */
- wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW,
- DISABLE_128B_EVICTION_COMMAND_UDW);
-
- /* Wa_22012856258:dg2 */
- wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2,
- GEN12_DISABLE_READ_SUPPRESSION);
-
/*
* Wa_22010960976:dg2
* Wa_14013347512:dg2
*/
wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN,
MDQ_ARBITRATION_MODE | UGM_BACKUP_MODE);
-
- /*
- * Wa_14010918519:dg2_g10
- *
- * LSC_CHICKEN_BIT_0 always reads back as 0 is this stepping,
- * so ignoring verification.
- */
- wa_mcr_add(wal, LSC_CHICKEN_BIT_0_UDW, 0,
- FORCE_SLM_FENCE_SCOPE_TO_TILE | FORCE_UGM_FENCE_SCOPE_TO_TILE,
- 0, false);
}
if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) {
wa_mcr_masked_en(wal, GEN9_HALF_SLICE_CHICKEN7,
DG2_DISABLE_ROUND_ENABLE_ALLOW_FOR_SSLA);
- if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0)) {
- /* Wa_14010680813:dg2_g10 */
- wa_write_or(wal, GEN12_GAMSTLB_CTRL, CONTROL_BLOCK_CLKGATE_DIS |
- EGRESS_BLOCK_CLKGATE_DIS | TAG_BLOCK_CLKGATE_DIS);
- }
-
- if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0) ||
- IS_DG2_GRAPHICS_STEP(engine->i915, G11, STEP_A0, STEP_B0)) {
- /* Wa_14012362059:dg2 */
- wa_mcr_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
- }
-
if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_B0, STEP_FOREVER) ||
IS_DG2_G10(i915)) {
/* Wa_22014600077:dg2 */
struct i915_wa_list *wal)
{
if (IS_PONTEVECCHIO(i915)) {
- wa_write(wal, XEHPC_L3SCRUB,
- SCRUB_CL_DWNGRADE_SHARED | SCRUB_RATE_4B_PER_CLK);
+ wa_mcr_write(wal, XEHPC_L3SCRUB,
+ SCRUB_CL_DWNGRADE_SHARED | SCRUB_RATE_4B_PER_CLK);
+ wa_mcr_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_HOSTCACHEEN);
}
if (IS_DG2(i915)) {
wa_mcr_write_or(wal, XEHP_L3SCQREG7, BLEND_FILL_CACHING_OPT_DIS);
wa_mcr_write_clr_set(wal, RT_CTRL, STACKID_CTRL, STACKID_CTRL_512);
-
- /*
- * This is also listed as Wa_22012654132 for certain DG2
- * steppings, but the tuning setting programming is a superset
- * since it applies to all DG2 variants and steppings.
- *
- * Note that register 0xE420 is write-only and cannot be read
- * back for verification on DG2 (due to Wa_14012342262), so
- * we need to explicitly skip the readback.
- */
- wa_mcr_add(wal, GEN10_CACHE_MODE_SS, 0,
- _MASKED_BIT_ENABLE(ENABLE_PREFETCH_INTO_IC),
- 0 /* write-only, so skip validation */,
- true);
}
/*
if (INTEL_INFO(i915)->tuning_thread_rr_after_dep)
wa_mcr_masked_field_set(wal, GEN9_ROW_CHICKEN4, THREAD_EX_ARB_MODE,
THREAD_EX_ARB_MODE_RR_AFTER_DEP);
+
+ if (GRAPHICS_VER(i915) == 12 && GRAPHICS_VER_FULL(i915) < IP_VER(12, 50))
+ wa_write_clr(wal, GEN8_GARBCNTL, GEN12_BUS_HASH_CTL_BIT_EXC);
}
/*
add_render_compute_tuning_settings(i915, wal);
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0) ||
+ IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
+ IS_DG2_G11(i915) || IS_DG2_G12(i915)) {
+ /* Wa_22013037850 */
+ wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW,
+ DISABLE_128B_EVICTION_COMMAND_UDW);
+ }
+
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0) ||
+ IS_PONTEVECCHIO(i915) ||
+ IS_DG2(i915)) {
+ /* Wa_22014226127 */
+ wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0, DISABLE_D8_D16_COASLESCE);
+ }
+
+ if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+ IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0) ||
+ IS_DG2(i915)) {
+ /* Wa_18017747507 */
+ wa_masked_en(wal, VFG_PREEMPTION_CHICKEN, POLYGON_TRIFAN_LINELOOP_DISABLE);
+ }
+
+ if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_C0) ||
+ IS_DG2_G11(i915)) {
+ /*
+ * Wa_22012826095:dg2
+ * Wa_22013059131:dg2
+ */
+ wa_mcr_write_clr_set(wal, LSC_CHICKEN_BIT_0_UDW,
+ MAXREQS_PER_BANK,
+ REG_FIELD_PREP(MAXREQS_PER_BANK, 2));
+
+ /* Wa_22013059131:dg2 */
+ wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0,
+ FORCE_1_SUB_MESSAGE_PER_FRAGMENT);
+ }
+
+ if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) {
+ /*
+ * Wa_14010918519:dg2_g10
+ *
+ * LSC_CHICKEN_BIT_0 always reads back as 0 is this stepping,
+ * so ignoring verification.
+ */
+ wa_mcr_add(wal, LSC_CHICKEN_BIT_0_UDW, 0,
+ FORCE_SLM_FENCE_SCOPE_TO_TILE | FORCE_UGM_FENCE_SCOPE_TO_TILE,
+ 0, false);
+ }
+
if (IS_PONTEVECCHIO(i915)) {
/* Wa_16016694945 */
- wa_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC);
+ wa_mcr_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC);
}
if (IS_XEHPSDV(i915)) {
wa_mcr_masked_dis(wal, MLTICTXCTL, TDONRENDER);
wa_mcr_write_or(wal, L3SQCREG1_CCS0, FLUSHALLNONCOH);
}
-
- /* Wa_14012362059:xehpsdv */
- wa_mcr_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
-
- /* Wa_14014368820:xehpsdv */
- wa_write_or(wal, GEN12_GAMCNTRL_CTRL, INVALIDATION_BROADCAST_MODE_DIS |
- GLOBAL_INVALIDATION_MODE);
}
if (IS_DG2(i915) || IS_PONTEVECCHIO(i915)) {
/* Wa_14015227452:dg2,pvc */
wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, XEHP_DIS_BBL_SYSPIPE);
- /* Wa_22014226127:dg2,pvc */
- wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0, DISABLE_D8_D16_COASLESCE);
-
/* Wa_16015675438:dg2,pvc */
wa_masked_en(wal, FF_SLICE_CS_CHICKEN2, GEN12_PERF_FIX_BALANCING_CFE_DISABLE);
-
- /* Wa_18018781329:dg2,pvc */
- wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
- wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
- wa_mcr_write_or(wal, VDBX_MOD_CTRL, FORCE_MISS_FTLB);
- wa_mcr_write_or(wal, VEBX_MOD_CTRL, FORCE_MISS_FTLB);
}
if (IS_DG2(i915)) {
* Wa_22015475538:dg2
*/
wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW, DIS_CHAIN_2XSIMD8);
-
- /* Wa_18017747507:dg2 */
- wa_masked_en(wal, VFG_PREEMPTION_CHICKEN, POLYGON_TRIFAN_LINELOOP_DISABLE);
}
+
+ if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_C0) || IS_DG2_G11(i915))
+ /*
+ * Wa_22012654132
+ *
+ * Note that register 0xE420 is write-only and cannot be read
+ * back for verification on DG2 (due to Wa_14012342262), so
+ * we need to explicitly skip the readback.
+ */
+ wa_mcr_add(wal, GEN10_CACHE_MODE_SS, 0,
+ _MASKED_BIT_ENABLE(ENABLE_PREFETCH_INTO_IC),
+ 0 /* write-only, so skip validation */,
+ true);
}
static void
projects / linux.git / blobdiff