From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
This leaves the ringbuff submission code in intel_ringbuffer.c
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_engine_cs.c | 834 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_ringbuffer.c | 834 --------------------------------
2 files changed, 834 insertions(+), 834 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 538d845d7251..afaedc3adc2e 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -525,6 +525,840 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
}
}
+static int wa_add(struct drm_i915_private *dev_priv,
+ i915_reg_t addr,
+ const u32 mask, const u32 val)
+{
+ const u32 idx = dev_priv->workarounds.count;
+
+ if (WARN_ON(idx >= I915_MAX_WA_REGS))
+ return -ENOSPC;
+
+ dev_priv->workarounds.reg[idx].addr = addr;
+ dev_priv->workarounds.reg[idx].value = val;
+ dev_priv->workarounds.reg[idx].mask = mask;
+
+ dev_priv->workarounds.count++;
+
+ return 0;
+}
+
+#define WA_REG(addr, mask, val) do { \
+ const int r = wa_add(dev_priv, (addr), (mask), (val)); \
+ if (r) \
+ return r; \
+ } while (0)
+
+#define WA_SET_BIT_MASKED(addr, mask) \
+ WA_REG(addr, (mask), _MASKED_BIT_ENABLE(mask))
+
+#define WA_CLR_BIT_MASKED(addr, mask) \
+ WA_REG(addr, (mask), _MASKED_BIT_DISABLE(mask))
+
+#define WA_SET_FIELD_MASKED(addr, mask, value) \
+ WA_REG(addr, mask, _MASKED_FIELD(mask, value))
+
+#define WA_SET_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) | (mask))
+#define WA_CLR_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) & ~(mask))
+
+#define WA_WRITE(addr, val) WA_REG(addr, 0xffffffff, val)
+
+static int wa_ring_whitelist_reg(struct intel_engine_cs *engine,
+ i915_reg_t reg)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ struct i915_workarounds *wa = &dev_priv->workarounds;
+ const uint32_t index = wa->hw_whitelist_count[engine->id];
+
+ if (WARN_ON(index >= RING_MAX_NONPRIV_SLOTS))
+ return -EINVAL;
+
+ WA_WRITE(RING_FORCE_TO_NONPRIV(engine->mmio_base, index),
+ i915_mmio_reg_offset(reg));
+ wa->hw_whitelist_count[engine->id]++;
+
+ return 0;
+}
+
+static int gen8_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+
+ WA_SET_BIT_MASKED(INSTPM, INSTPM_FORCE_ORDERING);
+
+ /* WaDisableAsyncFlipPerfMode:bdw,chv */
+ WA_SET_BIT_MASKED(MI_MODE, ASYNC_FLIP_PERF_DISABLE);
+
+ /* WaDisablePartialInstShootdown:bdw,chv */
+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
+ PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
+
+ /* Use Force Non-Coherent whenever executing a 3D context. This is a
+ * workaround for for a possible hang in the unlikely event a TLB
+ * invalidation occurs during a PSD flush.
+ */
+ /* WaForceEnableNonCoherent:bdw,chv */
+ /* WaHdcDisableFetchWhenMasked:bdw,chv */
+ WA_SET_BIT_MASKED(HDC_CHICKEN0,
+ HDC_DONOT_FETCH_MEM_WHEN_MASKED |
+ HDC_FORCE_NON_COHERENT);
+
+ /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0:
+ * "The Hierarchical Z RAW Stall Optimization allows non-overlapping
+ * polygons in the same 8x4 pixel/sample area to be processed without
+ * stalling waiting for the earlier ones to write to Hierarchical Z
+ * buffer."
+ *
+ * This optimization is off by default for BDW and CHV; turn it on.
+ */
+ WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE);
+
+ /* Wa4x4STCOptimizationDisable:bdw,chv */
+ WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);
+
+ /*
+ * BSpec recommends 8x4 when MSAA is used,
+ * however in practice 16x4 seems fastest.
+ *
+ * Note that PS/WM thread counts depend on the WIZ hashing
+ * disable bit, which we don't touch here, but it's good
+ * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
+ */
+ WA_SET_FIELD_MASKED(GEN7_GT_MODE,
+ GEN6_WIZ_HASHING_MASK,
+ GEN6_WIZ_HASHING_16x4);
+
+ return 0;
+}
+
+static int bdw_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen8_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /* WaDisableThreadStallDopClockGating:bdw (pre-production) */
+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE);
+
+ /* WaDisableDopClockGating:bdw
+ *
+ * Also see the related UCGTCL1 write in broadwell_init_clock_gating()
+ * to disable EUTC clock gating.
+ */
+ WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
+ DOP_CLOCK_GATING_DISABLE);
+
+ WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
+ GEN8_SAMPLER_POWER_BYPASS_DIS);
+
+ WA_SET_BIT_MASKED(HDC_CHICKEN0,
+ /* WaForceContextSaveRestoreNonCoherent:bdw */
+ HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
+ /* WaDisableFenceDestinationToSLM:bdw (pre-prod) */
+ (IS_BDW_GT3(dev_priv) ? HDC_FENCE_DEST_SLM_DISABLE : 0));
+
+ return 0;
+}
+
+static int chv_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen8_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /* WaDisableThreadStallDopClockGating:chv */
+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE);
+
+ /* Improve HiZ throughput on CHV. */
+ WA_SET_BIT_MASKED(HIZ_CHICKEN, CHV_HZ_8X8_MODE_IN_1X);
+
+ return 0;
+}
+
+static int gen9_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ /* WaConextSwitchWithConcurrentTLBInvalidate:skl,bxt,kbl,glk */
+ I915_WRITE(GEN9_CSFE_CHICKEN1_RCS, _MASKED_BIT_ENABLE(GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE));
+
+ /* WaEnableLbsSlaRetryTimerDecrement:skl,bxt,kbl,glk */
+ I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) |
+ GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE);
+
+ /* WaDisableKillLogic:bxt,skl,kbl */
+ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
+ ECOCHK_DIS_TLB);
+
+ /* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk */
+ /* WaDisablePartialInstShootdown:skl,bxt,kbl,glk */
+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
+ FLOW_CONTROL_ENABLE |
+ PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
+
+ /* Syncing dependencies between camera and graphics:skl,bxt,kbl */
+ WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
+ GEN9_DISABLE_OCL_OOB_SUPPRESS_LOGIC);
+
+ /* WaDisableDgMirrorFixInHalfSliceChicken5:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
+ WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
+ GEN9_DG_MIRROR_FIX_ENABLE);
+
+ /* WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
+ WA_SET_BIT_MASKED(GEN7_COMMON_SLICE_CHICKEN1,
+ GEN9_RHWO_OPTIMIZATION_DISABLE);
+ /*
+ * WA also requires GEN9_SLICE_COMMON_ECO_CHICKEN0[14:14] to be set
+ * but we do that in per ctx batchbuffer as there is an issue
+ * with this register not getting restored on ctx restore
+ */
+ }
+
+ /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt,kbl */
+ WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
+ GEN9_ENABLE_GPGPU_PREEMPTION);
+
+ /* Wa4x4STCOptimizationDisable:skl,bxt,kbl,glk */
+ /* WaDisablePartialResolveInVc:skl,bxt,kbl */
+ WA_SET_BIT_MASKED(CACHE_MODE_1, (GEN8_4x4_STC_OPTIMIZATION_DISABLE |
+ GEN9_PARTIAL_RESOLVE_IN_VC_DISABLE));
+
+ /* WaCcsTlbPrefetchDisable:skl,bxt,kbl,glk */
+ WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
+ GEN9_CCS_TLB_PREFETCH_ENABLE);
+
+ /* WaDisableMaskBasedCammingInRCC:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
+ WA_SET_BIT_MASKED(SLICE_ECO_CHICKEN0,
+ PIXEL_MASK_CAMMING_DISABLE);
+
+ /* WaForceContextSaveRestoreNonCoherent:skl,bxt,kbl */
+ WA_SET_BIT_MASKED(HDC_CHICKEN0,
+ HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
+ HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE);
+
+ /* WaForceEnableNonCoherent and WaDisableHDCInvalidation are
+ * both tied to WaForceContextSaveRestoreNonCoherent
+ * in some hsds for skl. We keep the tie for all gen9. The
+ * documentation is a bit hazy and so we want to get common behaviour,
+ * even though there is no clear evidence we would need both on kbl/bxt.
+ * This area has been source of system hangs so we play it safe
+ * and mimic the skl regardless of what bspec says.
+ *
+ * Use Force Non-Coherent whenever executing a 3D context. This
+ * is a workaround for a possible hang in the unlikely event
+ * a TLB invalidation occurs during a PSD flush.
+ */
+
+ /* WaForceEnableNonCoherent:skl,bxt,kbl */
+ WA_SET_BIT_MASKED(HDC_CHICKEN0,
+ HDC_FORCE_NON_COHERENT);
+
+ /* WaDisableHDCInvalidation:skl,bxt,kbl */
+ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
+ BDW_DISABLE_HDC_INVALIDATION);
+
+ /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt,kbl */
+ if (IS_SKYLAKE(dev_priv) ||
+ IS_KABYLAKE(dev_priv) ||
+ IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0))
+ WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
+ GEN8_SAMPLER_POWER_BYPASS_DIS);
+
+ /* WaDisableSTUnitPowerOptimization:skl,bxt,kbl,glk */
+ WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE);
+
+ /* WaOCLCoherentLineFlush:skl,bxt,kbl */
+ I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
+ GEN8_LQSC_FLUSH_COHERENT_LINES));
+
+ /* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk */
+ ret = wa_ring_whitelist_reg(engine, GEN9_CTX_PREEMPT_REG);
+ if (ret)
+ return ret;
+
+ /* WaEnablePreemptionGranularityControlByUMD:skl,bxt,kbl */
+ ret= wa_ring_whitelist_reg(engine, GEN8_CS_CHICKEN1);
+ if (ret)
+ return ret;
+
+ /* WaAllowUMDToModifyHDCChicken1:skl,bxt,kbl,glk */
+ ret = wa_ring_whitelist_reg(engine, GEN8_HDC_CHICKEN1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int skl_tune_iz_hashing(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ u8 vals[3] = { 0, 0, 0 };
+ unsigned int i;
+
+ for (i = 0; i < 3; i++) {
+ u8 ss;
+
+ /*
+ * Only consider slices where one, and only one, subslice has 7
+ * EUs
+ */
+ if (!is_power_of_2(INTEL_INFO(dev_priv)->sseu.subslice_7eu[i]))
+ continue;
+
+ /*
+ * subslice_7eu[i] != 0 (because of the check above) and
+ * ss_max == 4 (maximum number of subslices possible per slice)
+ *
+ * -> 0 <= ss <= 3;
+ */
+ ss = ffs(INTEL_INFO(dev_priv)->sseu.subslice_7eu[i]) - 1;
+ vals[i] = 3 - ss;
+ }
+
+ if (vals[0] == 0 && vals[1] == 0 && vals[2] == 0)
+ return 0;
+
+ /* Tune IZ hashing. See intel_device_info_runtime_init() */
+ WA_SET_FIELD_MASKED(GEN7_GT_MODE,
+ GEN9_IZ_HASHING_MASK(2) |
+ GEN9_IZ_HASHING_MASK(1) |
+ GEN9_IZ_HASHING_MASK(0),
+ GEN9_IZ_HASHING(2, vals[2]) |
+ GEN9_IZ_HASHING(1, vals[1]) |
+ GEN9_IZ_HASHING(0, vals[0]));
+
+ return 0;
+}
+
+static int skl_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen9_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /*
+ * Actual WA is to disable percontext preemption granularity control
+ * until D0 which is the default case so this is equivalent to
+ * !WaDisablePerCtxtPreemptionGranularityControl:skl
+ */
+ I915_WRITE(GEN7_FF_SLICE_CS_CHICKEN1,
+ _MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL));
+
+ /* WaEnableGapsTsvCreditFix:skl */
+ I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
+ GEN9_GAPS_TSV_CREDIT_DISABLE));
+
+ /* WaDisableGafsUnitClkGating:skl */
+ WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
+
+ /* WaInPlaceDecompressionHang:skl */
+ if (IS_SKL_REVID(dev_priv, SKL_REVID_H0, REVID_FOREVER))
+ WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
+ GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+
+ /* WaDisableLSQCROPERFforOCL:skl */
+ ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
+ if (ret)
+ return ret;
+
+ return skl_tune_iz_hashing(engine);
+}
+
+static int bxt_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen9_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /* WaStoreMultiplePTEenable:bxt */
+ /* This is a requirement according to Hardware specification */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
+ I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF);
+
+ /* WaSetClckGatingDisableMedia:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
+ I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) &
+ ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE));
+ }
+
+ /* WaDisableThreadStallDopClockGating:bxt */
+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
+ STALL_DOP_GATING_DISABLE);
+
+ /* WaDisablePooledEuLoadBalancingFix:bxt */
+ if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
+ WA_SET_BIT_MASKED(FF_SLICE_CS_CHICKEN2,
+ GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE);
+ }
+
+ /* WaDisableSbeCacheDispatchPortSharing:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0)) {
+ WA_SET_BIT_MASKED(
+ GEN7_HALF_SLICE_CHICKEN1,
+ GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
+ }
+
+ /* WaDisableObjectLevelPreemptionForTrifanOrPolygon:bxt */
+ /* WaDisableObjectLevelPreemptionForInstancedDraw:bxt */
+ /* WaDisableObjectLevelPreemtionForInstanceId:bxt */
+ /* WaDisableLSQCROPERFforOCL:bxt */
+ if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
+ ret = wa_ring_whitelist_reg(engine, GEN9_CS_DEBUG_MODE1);
+ if (ret)
+ return ret;
+
+ ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
+ if (ret)
+ return ret;
+ }
+
+ /* WaProgramL3SqcReg1DefaultForPerf:bxt */
+ if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER))
+ I915_WRITE(GEN8_L3SQCREG1, L3_GENERAL_PRIO_CREDITS(62) |
+ L3_HIGH_PRIO_CREDITS(2));
+
+ /* WaToEnableHwFixForPushConstHWBug:bxt */
+ if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
+ WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
+ GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
+
+ /* WaInPlaceDecompressionHang:bxt */
+ if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
+ WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
+ GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+
+ return 0;
+}
+
+static int kbl_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen9_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /* WaEnableGapsTsvCreditFix:kbl */
+ I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
+ GEN9_GAPS_TSV_CREDIT_DISABLE));
+
+ /* WaDisableDynamicCreditSharing:kbl */
+ if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
+ WA_SET_BIT(GAMT_CHKN_BIT_REG,
+ GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING);
+
+ /* WaDisableFenceDestinationToSLM:kbl (pre-prod) */
+ if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0))
+ WA_SET_BIT_MASKED(HDC_CHICKEN0,
+ HDC_FENCE_DEST_SLM_DISABLE);
+
+ /* WaToEnableHwFixForPushConstHWBug:kbl */
+ if (IS_KBL_REVID(dev_priv, KBL_REVID_C0, REVID_FOREVER))
+ WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
+ GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
+
+ /* WaDisableGafsUnitClkGating:kbl */
+ WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
+
+ /* WaDisableSbeCacheDispatchPortSharing:kbl */
+ WA_SET_BIT_MASKED(
+ GEN7_HALF_SLICE_CHICKEN1,
+ GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
+
+ /* WaInPlaceDecompressionHang:kbl */
+ WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
+ GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+
+ /* WaDisableLSQCROPERFforOCL:kbl */
+ ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int glk_init_workarounds(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+ int ret;
+
+ ret = gen9_init_workarounds(engine);
+ if (ret)
+ return ret;
+
+ /* WaToEnableHwFixForPushConstHWBug:glk */
+ WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
+ GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
+
+ return 0;
+}
+
+int init_workarounds_ring(struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+
+ WARN_ON(engine->id != RCS);
+
+ dev_priv->workarounds.count = 0;
+ dev_priv->workarounds.hw_whitelist_count[RCS] = 0;
+
+ if (IS_BROADWELL(dev_priv))
+ return bdw_init_workarounds(engine);
+
+ if (IS_CHERRYVIEW(dev_priv))
+ return chv_init_workarounds(engine);
+
+ if (IS_SKYLAKE(dev_priv))
+ return skl_init_workarounds(engine);
+
+ if (IS_BROXTON(dev_priv))
+ return bxt_init_workarounds(engine);
+
+ if (IS_KABYLAKE(dev_priv))
+ return kbl_init_workarounds(engine);
+
+ if (IS_GEMINILAKE(dev_priv))
+ return glk_init_workarounds(engine);
+
+ return 0;
+}
+
+int intel_ring_workarounds_emit(struct drm_i915_gem_request *req)
+{
+ struct i915_workarounds *w = &req->i915->workarounds;
+ u32 *cs;
+ int ret, i;
+
+ if (w->count == 0)
+ return 0;
+
+ ret = req->engine->emit_flush(req, EMIT_BARRIER);
+ if (ret)
+ return ret;
+
+ cs = intel_ring_begin(req, (w->count * 2 + 2));
+ if (IS_ERR(cs))
+ return PTR_ERR(cs);
+
+ *cs++ = MI_LOAD_REGISTER_IMM(w->count);
+ for (i = 0; i < w->count; i++) {
+ *cs++ = i915_mmio_reg_offset(w->reg[i].addr);
+ *cs++ = w->reg[i].value;
+ }
+ *cs++ = MI_NOOP;
+
+ intel_ring_advance(req, cs);
+
+ ret = req->engine->emit_flush(req, EMIT_BARRIER);
+ if (ret)
+ return ret;
+
+ DRM_DEBUG_DRIVER("Number of Workarounds emitted: %d\n", w->count);
+
+ return 0;
+}
+
+int intel_ring_pin(struct intel_ring *ring, unsigned int offset_bias)
+{
+ unsigned int flags;
+ enum i915_map_type map;
+ struct i915_vma *vma = ring->vma;
+ void *addr;
+ int ret;
+
+ GEM_BUG_ON(ring->vaddr);
+
+ map = HAS_LLC(ring->engine->i915) ? I915_MAP_WB : I915_MAP_WC;
+
+ flags = PIN_GLOBAL;
+ if (offset_bias)
+ flags |= PIN_OFFSET_BIAS | offset_bias;
+ if (vma->obj->stolen)
+ flags |= PIN_MAPPABLE;
+
+ if (!(vma->flags & I915_VMA_GLOBAL_BIND)) {
+ if (flags & PIN_MAPPABLE || map == I915_MAP_WC)
+ ret = i915_gem_object_set_to_gtt_domain(vma->obj, true);
+ else
+ ret = i915_gem_object_set_to_cpu_domain(vma->obj, true);
+ if (unlikely(ret))
+ return ret;
+ }
+
+ ret = i915_vma_pin(vma, 0, PAGE_SIZE, flags);
+ if (unlikely(ret))
+ return ret;
+
+ if (i915_vma_is_map_and_fenceable(vma))
+ addr = (void __force *)i915_vma_pin_iomap(vma);
+ else
+ addr = i915_gem_object_pin_map(vma->obj, map);
+ if (IS_ERR(addr))
+ goto err;
+
+ ring->vaddr = addr;
+ return 0;
+
+err:
+ i915_vma_unpin(vma);
+ return PTR_ERR(addr);
+}
+
+void intel_ring_unpin(struct intel_ring *ring)
+{
+ GEM_BUG_ON(!ring->vma);
+ GEM_BUG_ON(!ring->vaddr);
+
+ if (i915_vma_is_map_and_fenceable(ring->vma))
+ i915_vma_unpin_iomap(ring->vma);
+ else
+ i915_gem_object_unpin_map(ring->vma->obj);
+ ring->vaddr = NULL;
+
+ i915_vma_unpin(ring->vma);
+}
+
+static struct i915_vma *
+intel_ring_create_vma(struct drm_i915_private *dev_priv, int size)
+{
+ struct drm_i915_gem_object *obj;
+ struct i915_vma *vma;
+
+ obj = i915_gem_object_create_stolen(dev_priv, size);
+ if (!obj)
+ obj = i915_gem_object_create(dev_priv, size);
+ if (IS_ERR(obj))
+ return ERR_CAST(obj);
+
+ /* mark ring buffers as read-only from GPU side by default */
+ obj->gt_ro = 1;
+
+ vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
+ if (IS_ERR(vma))
+ goto err;
+
+ return vma;
+
+err:
+ i915_gem_object_put(obj);
+ return vma;
+}
+
+struct intel_ring *
+intel_engine_create_ring(struct intel_engine_cs *engine, int size)
+{
+ struct intel_ring *ring;
+ struct i915_vma *vma;
+
+ GEM_BUG_ON(!is_power_of_2(size));
+ GEM_BUG_ON(RING_CTL_SIZE(size) & ~RING_NR_PAGES);
+
+ ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ if (!ring)
+ return ERR_PTR(-ENOMEM);
+
+ ring->engine = engine;
+
+ INIT_LIST_HEAD(&ring->request_list);
+
+ ring->size = size;
+ /* Workaround an erratum on the i830 which causes a hang if
+ * the TAIL pointer points to within the last 2 cachelines
+ * of the buffer.
+ */
+ ring->effective_size = size;
+ if (IS_I830(engine->i915) || IS_I845G(engine->i915))
+ ring->effective_size -= 2 * CACHELINE_BYTES;
+
+ ring->last_retired_head = -1;
+ intel_ring_update_space(ring);
+
+ vma = intel_ring_create_vma(engine->i915, size);
+ if (IS_ERR(vma)) {
+ kfree(ring);
+ return ERR_CAST(vma);
+ }
+ ring->vma = vma;
+
+ return ring;
+}
+
+void
+intel_ring_free(struct intel_ring *ring)
+{
+ struct drm_i915_gem_object *obj = ring->vma->obj;
+
+ i915_vma_close(ring->vma);
+ __i915_gem_object_release_unless_active(obj);
+
+ kfree(ring);
+}
+
+static int __intel_ring_space(int head, int tail, int size)
+{
+ int space = head - tail;
+ if (space <= 0)
+ space += size;
+ return space - I915_RING_FREE_SPACE;
+}
+
+static int wait_for_space(struct drm_i915_gem_request *req, int bytes)
+{
+ struct intel_ring *ring = req->ring;
+ struct drm_i915_gem_request *target;
+ long timeout;
+
+ lockdep_assert_held(&req->i915->drm.struct_mutex);
+
+ intel_ring_update_space(ring);
+ if (ring->space >= bytes)
+ return 0;
+
+ /*
+ * Space is reserved in the ringbuffer for finalising the request,
+ * as that cannot be allowed to fail. During request finalisation,
+ * reserved_space is set to 0 to stop the overallocation and the
+ * assumption is that then we never need to wait (which has the
+ * risk of failing with EINTR).
+ *
+ * See also i915_gem_request_alloc() and i915_add_request().
+ */
+ GEM_BUG_ON(!req->reserved_space);
+
+ list_for_each_entry(target, &ring->request_list, ring_link) {
+ unsigned space;
+
+ /* Would completion of this request free enough space? */
+ space = __intel_ring_space(target->postfix, ring->tail,
+ ring->size);
+ if (space >= bytes)
+ break;
+ }
+
+ if (WARN_ON(&target->ring_link == &ring->request_list))
+ return -ENOSPC;
+
+ timeout = i915_wait_request(target,
+ I915_WAIT_INTERRUPTIBLE | I915_WAIT_LOCKED,
+ MAX_SCHEDULE_TIMEOUT);
+ if (timeout < 0)
+ return timeout;
+
+ i915_gem_request_retire_upto(target);
+
+ intel_ring_update_space(ring);
+ GEM_BUG_ON(ring->space < bytes);
+ return 0;
+}
+
+u32 *intel_ring_begin(struct drm_i915_gem_request *req, int num_dwords)
+{
+ struct intel_ring *ring = req->ring;
+ int remain_actual = ring->size - ring->tail;
+ int remain_usable = ring->effective_size - ring->tail;
+ int bytes = num_dwords * sizeof(u32);
+ int total_bytes, wait_bytes;
+ bool need_wrap = false;
+ u32 *cs;
+
+ total_bytes = bytes + req->reserved_space;
+
+ if (unlikely(bytes > remain_usable)) {
+ /*
+ * Not enough space for the basic request. So need to flush
+ * out the remainder and then wait for base + reserved.
+ */
+ wait_bytes = remain_actual + total_bytes;
+ need_wrap = true;
+ } else if (unlikely(total_bytes > remain_usable)) {
+ /*
+ * The base request will fit but the reserved space
+ * falls off the end. So we don't need an immediate wrap
+ * and only need to effectively wait for the reserved
+ * size space from the start of ringbuffer.
+ */
+ wait_bytes = remain_actual + req->reserved_space;
+ } else {
+ /* No wrapping required, just waiting. */
+ wait_bytes = total_bytes;
+ }
+
+ if (wait_bytes > ring->space) {
+ int ret = wait_for_space(req, wait_bytes);
+ if (unlikely(ret))
+ return ERR_PTR(ret);
+ }
+
+ if (unlikely(need_wrap)) {
+ GEM_BUG_ON(remain_actual > ring->space);
+ GEM_BUG_ON(ring->tail + remain_actual > ring->size);
+
+ /* Fill the tail with MI_NOOP */
+ memset(ring->vaddr + ring->tail, 0, remain_actual);
+ ring->tail = 0;
+ ring->space -= remain_actual;
+ }
+
+ GEM_BUG_ON(ring->tail > ring->size - bytes);
+ cs = ring->vaddr + ring->tail;
+ ring->tail += bytes;
+ ring->space -= bytes;
+ GEM_BUG_ON(ring->space < 0);
+
+ return cs;
+}
+
+void intel_ring_update_space(struct intel_ring *ring)
+{
+ if (ring->last_retired_head != -1) {
+ ring->head = ring->last_retired_head;
+ ring->last_retired_head = -1;
+ }
+
+ ring->space = __intel_ring_space(ring->head & HEAD_ADDR,
+ ring->tail, ring->size);
+}
+
+/* Align the ring tail to a cacheline boundary */
+int intel_ring_cacheline_align(struct drm_i915_gem_request *req)
+{
+ int num_dwords =
+ (req->ring->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
+ u32 *cs;
+
+ if (num_dwords == 0)
+ return 0;
+
+ num_dwords = CACHELINE_BYTES / sizeof(uint32_t) - num_dwords;
+ cs = intel_ring_begin(req, num_dwords);
+ if (IS_ERR(cs))
+ return PTR_ERR(cs);
+
+ while (num_dwords--)
+ *cs++ = MI_NOOP;
+
+ intel_ring_advance(req, cs);
+
+ return 0;
+}
+
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_engine.c"
#endif
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 8c17db72489f..a8ff5903bb90 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -39,25 +39,6 @@
*/
#define LEGACY_REQUEST_SIZE 200
-static int __intel_ring_space(int head, int tail, int size)
-{
- int space = head - tail;
- if (space <= 0)
- space += size;
- return space - I915_RING_FREE_SPACE;
-}
-
-void intel_ring_update_space(struct intel_ring *ring)
-{
- if (ring->last_retired_head != -1) {
- ring->head = ring->last_retired_head;
- ring->last_retired_head = -1;
- }
-
- ring->space = __intel_ring_space(ring->head & HEAD_ADDR,
- ring->tail, ring->size);
-}
-
static int
gen2_render_ring_flush(struct drm_i915_gem_request *req, u32 mode)
{
@@ -644,41 +625,6 @@ static void reset_ring_common(struct intel_engine_cs *engine,
}
}
-int intel_ring_workarounds_emit(struct drm_i915_gem_request *req)
-{
- struct i915_workarounds *w = &req->i915->workarounds;
- u32 *cs;
- int ret, i;
-
- if (w->count == 0)
- return 0;
-
- ret = req->engine->emit_flush(req, EMIT_BARRIER);
- if (ret)
- return ret;
-
- cs = intel_ring_begin(req, (w->count * 2 + 2));
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- *cs++ = MI_LOAD_REGISTER_IMM(w->count);
- for (i = 0; i < w->count; i++) {
- *cs++ = i915_mmio_reg_offset(w->reg[i].addr);
- *cs++ = w->reg[i].value;
- }
- *cs++ = MI_NOOP;
-
- intel_ring_advance(req, cs);
-
- ret = req->engine->emit_flush(req, EMIT_BARRIER);
- if (ret)
- return ret;
-
- DRM_DEBUG_DRIVER("Number of Workarounds emitted: %d\n", w->count);
-
- return 0;
-}
-
static int intel_rcs_ctx_init(struct drm_i915_gem_request *req)
{
int ret;
@@ -694,521 +640,6 @@ static int intel_rcs_ctx_init(struct drm_i915_gem_request *req)
return 0;
}
-static int wa_add(struct drm_i915_private *dev_priv,
- i915_reg_t addr,
- const u32 mask, const u32 val)
-{
- const u32 idx = dev_priv->workarounds.count;
-
- if (WARN_ON(idx >= I915_MAX_WA_REGS))
- return -ENOSPC;
-
- dev_priv->workarounds.reg[idx].addr = addr;
- dev_priv->workarounds.reg[idx].value = val;
- dev_priv->workarounds.reg[idx].mask = mask;
-
- dev_priv->workarounds.count++;
-
- return 0;
-}
-
-#define WA_REG(addr, mask, val) do { \
- const int r = wa_add(dev_priv, (addr), (mask), (val)); \
- if (r) \
- return r; \
- } while (0)
-
-#define WA_SET_BIT_MASKED(addr, mask) \
- WA_REG(addr, (mask), _MASKED_BIT_ENABLE(mask))
-
-#define WA_CLR_BIT_MASKED(addr, mask) \
- WA_REG(addr, (mask), _MASKED_BIT_DISABLE(mask))
-
-#define WA_SET_FIELD_MASKED(addr, mask, value) \
- WA_REG(addr, mask, _MASKED_FIELD(mask, value))
-
-#define WA_SET_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) | (mask))
-#define WA_CLR_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) & ~(mask))
-
-#define WA_WRITE(addr, val) WA_REG(addr, 0xffffffff, val)
-
-static int wa_ring_whitelist_reg(struct intel_engine_cs *engine,
- i915_reg_t reg)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- struct i915_workarounds *wa = &dev_priv->workarounds;
- const uint32_t index = wa->hw_whitelist_count[engine->id];
-
- if (WARN_ON(index >= RING_MAX_NONPRIV_SLOTS))
- return -EINVAL;
-
- WA_WRITE(RING_FORCE_TO_NONPRIV(engine->mmio_base, index),
- i915_mmio_reg_offset(reg));
- wa->hw_whitelist_count[engine->id]++;
-
- return 0;
-}
-
-static int gen8_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
-
- WA_SET_BIT_MASKED(INSTPM, INSTPM_FORCE_ORDERING);
-
- /* WaDisableAsyncFlipPerfMode:bdw,chv */
- WA_SET_BIT_MASKED(MI_MODE, ASYNC_FLIP_PERF_DISABLE);
-
- /* WaDisablePartialInstShootdown:bdw,chv */
- WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
- PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
-
- /* Use Force Non-Coherent whenever executing a 3D context. This is a
- * workaround for for a possible hang in the unlikely event a TLB
- * invalidation occurs during a PSD flush.
- */
- /* WaForceEnableNonCoherent:bdw,chv */
- /* WaHdcDisableFetchWhenMasked:bdw,chv */
- WA_SET_BIT_MASKED(HDC_CHICKEN0,
- HDC_DONOT_FETCH_MEM_WHEN_MASKED |
- HDC_FORCE_NON_COHERENT);
-
- /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0:
- * "The Hierarchical Z RAW Stall Optimization allows non-overlapping
- * polygons in the same 8x4 pixel/sample area to be processed without
- * stalling waiting for the earlier ones to write to Hierarchical Z
- * buffer."
- *
- * This optimization is off by default for BDW and CHV; turn it on.
- */
- WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE);
-
- /* Wa4x4STCOptimizationDisable:bdw,chv */
- WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);
-
- /*
- * BSpec recommends 8x4 when MSAA is used,
- * however in practice 16x4 seems fastest.
- *
- * Note that PS/WM thread counts depend on the WIZ hashing
- * disable bit, which we don't touch here, but it's good
- * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
- */
- WA_SET_FIELD_MASKED(GEN7_GT_MODE,
- GEN6_WIZ_HASHING_MASK,
- GEN6_WIZ_HASHING_16x4);
-
- return 0;
-}
-
-static int bdw_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen8_init_workarounds(engine);
- if (ret)
- return ret;
-
- /* WaDisableThreadStallDopClockGating:bdw (pre-production) */
- WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE);
-
- /* WaDisableDopClockGating:bdw
- *
- * Also see the related UCGTCL1 write in broadwell_init_clock_gating()
- * to disable EUTC clock gating.
- */
- WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
- DOP_CLOCK_GATING_DISABLE);
-
- WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
- GEN8_SAMPLER_POWER_BYPASS_DIS);
-
- WA_SET_BIT_MASKED(HDC_CHICKEN0,
- /* WaForceContextSaveRestoreNonCoherent:bdw */
- HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
- /* WaDisableFenceDestinationToSLM:bdw (pre-prod) */
- (IS_BDW_GT3(dev_priv) ? HDC_FENCE_DEST_SLM_DISABLE : 0));
-
- return 0;
-}
-
-static int chv_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen8_init_workarounds(engine);
- if (ret)
- return ret;
-
- /* WaDisableThreadStallDopClockGating:chv */
- WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE);
-
- /* Improve HiZ throughput on CHV. */
- WA_SET_BIT_MASKED(HIZ_CHICKEN, CHV_HZ_8X8_MODE_IN_1X);
-
- return 0;
-}
-
-static int gen9_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- /* WaConextSwitchWithConcurrentTLBInvalidate:skl,bxt,kbl,glk */
- I915_WRITE(GEN9_CSFE_CHICKEN1_RCS, _MASKED_BIT_ENABLE(GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE));
-
- /* WaEnableLbsSlaRetryTimerDecrement:skl,bxt,kbl,glk */
- I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) |
- GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE);
-
- /* WaDisableKillLogic:bxt,skl,kbl */
- I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
- ECOCHK_DIS_TLB);
-
- /* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk */
- /* WaDisablePartialInstShootdown:skl,bxt,kbl,glk */
- WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
- FLOW_CONTROL_ENABLE |
- PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
-
- /* Syncing dependencies between camera and graphics:skl,bxt,kbl */
- WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
- GEN9_DISABLE_OCL_OOB_SUPPRESS_LOGIC);
-
- /* WaDisableDgMirrorFixInHalfSliceChicken5:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
- WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
- GEN9_DG_MIRROR_FIX_ENABLE);
-
- /* WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
- WA_SET_BIT_MASKED(GEN7_COMMON_SLICE_CHICKEN1,
- GEN9_RHWO_OPTIMIZATION_DISABLE);
- /*
- * WA also requires GEN9_SLICE_COMMON_ECO_CHICKEN0[14:14] to be set
- * but we do that in per ctx batchbuffer as there is an issue
- * with this register not getting restored on ctx restore
- */
- }
-
- /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt,kbl */
- WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
- GEN9_ENABLE_GPGPU_PREEMPTION);
-
- /* Wa4x4STCOptimizationDisable:skl,bxt,kbl,glk */
- /* WaDisablePartialResolveInVc:skl,bxt,kbl */
- WA_SET_BIT_MASKED(CACHE_MODE_1, (GEN8_4x4_STC_OPTIMIZATION_DISABLE |
- GEN9_PARTIAL_RESOLVE_IN_VC_DISABLE));
-
- /* WaCcsTlbPrefetchDisable:skl,bxt,kbl,glk */
- WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
- GEN9_CCS_TLB_PREFETCH_ENABLE);
-
- /* WaDisableMaskBasedCammingInRCC:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
- WA_SET_BIT_MASKED(SLICE_ECO_CHICKEN0,
- PIXEL_MASK_CAMMING_DISABLE);
-
- /* WaForceContextSaveRestoreNonCoherent:skl,bxt,kbl */
- WA_SET_BIT_MASKED(HDC_CHICKEN0,
- HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
- HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE);
-
- /* WaForceEnableNonCoherent and WaDisableHDCInvalidation are
- * both tied to WaForceContextSaveRestoreNonCoherent
- * in some hsds for skl. We keep the tie for all gen9. The
- * documentation is a bit hazy and so we want to get common behaviour,
- * even though there is no clear evidence we would need both on kbl/bxt.
- * This area has been source of system hangs so we play it safe
- * and mimic the skl regardless of what bspec says.
- *
- * Use Force Non-Coherent whenever executing a 3D context. This
- * is a workaround for a possible hang in the unlikely event
- * a TLB invalidation occurs during a PSD flush.
- */
-
- /* WaForceEnableNonCoherent:skl,bxt,kbl */
- WA_SET_BIT_MASKED(HDC_CHICKEN0,
- HDC_FORCE_NON_COHERENT);
-
- /* WaDisableHDCInvalidation:skl,bxt,kbl */
- I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
- BDW_DISABLE_HDC_INVALIDATION);
-
- /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt,kbl */
- if (IS_SKYLAKE(dev_priv) ||
- IS_KABYLAKE(dev_priv) ||
- IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0))
- WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
- GEN8_SAMPLER_POWER_BYPASS_DIS);
-
- /* WaDisableSTUnitPowerOptimization:skl,bxt,kbl,glk */
- WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE);
-
- /* WaOCLCoherentLineFlush:skl,bxt,kbl */
- I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
- GEN8_LQSC_FLUSH_COHERENT_LINES));
-
- /* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk */
- ret = wa_ring_whitelist_reg(engine, GEN9_CTX_PREEMPT_REG);
- if (ret)
- return ret;
-
- /* WaEnablePreemptionGranularityControlByUMD:skl,bxt,kbl */
- ret= wa_ring_whitelist_reg(engine, GEN8_CS_CHICKEN1);
- if (ret)
- return ret;
-
- /* WaAllowUMDToModifyHDCChicken1:skl,bxt,kbl,glk */
- ret = wa_ring_whitelist_reg(engine, GEN8_HDC_CHICKEN1);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int skl_tune_iz_hashing(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- u8 vals[3] = { 0, 0, 0 };
- unsigned int i;
-
- for (i = 0; i < 3; i++) {
- u8 ss;
-
- /*
- * Only consider slices where one, and only one, subslice has 7
- * EUs
- */
- if (!is_power_of_2(INTEL_INFO(dev_priv)->sseu.subslice_7eu[i]))
- continue;
-
- /*
- * subslice_7eu[i] != 0 (because of the check above) and
- * ss_max == 4 (maximum number of subslices possible per slice)
- *
- * -> 0 <= ss <= 3;
- */
- ss = ffs(INTEL_INFO(dev_priv)->sseu.subslice_7eu[i]) - 1;
- vals[i] = 3 - ss;
- }
-
- if (vals[0] == 0 && vals[1] == 0 && vals[2] == 0)
- return 0;
-
- /* Tune IZ hashing. See intel_device_info_runtime_init() */
- WA_SET_FIELD_MASKED(GEN7_GT_MODE,
- GEN9_IZ_HASHING_MASK(2) |
- GEN9_IZ_HASHING_MASK(1) |
- GEN9_IZ_HASHING_MASK(0),
- GEN9_IZ_HASHING(2, vals[2]) |
- GEN9_IZ_HASHING(1, vals[1]) |
- GEN9_IZ_HASHING(0, vals[0]));
-
- return 0;
-}
-
-static int skl_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen9_init_workarounds(engine);
- if (ret)
- return ret;
-
- /*
- * Actual WA is to disable percontext preemption granularity control
- * until D0 which is the default case so this is equivalent to
- * !WaDisablePerCtxtPreemptionGranularityControl:skl
- */
- I915_WRITE(GEN7_FF_SLICE_CS_CHICKEN1,
- _MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL));
-
- /* WaEnableGapsTsvCreditFix:skl */
- I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
- GEN9_GAPS_TSV_CREDIT_DISABLE));
-
- /* WaDisableGafsUnitClkGating:skl */
- WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
-
- /* WaInPlaceDecompressionHang:skl */
- if (IS_SKL_REVID(dev_priv, SKL_REVID_H0, REVID_FOREVER))
- WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
- GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
-
- /* WaDisableLSQCROPERFforOCL:skl */
- ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
- if (ret)
- return ret;
-
- return skl_tune_iz_hashing(engine);
-}
-
-static int bxt_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen9_init_workarounds(engine);
- if (ret)
- return ret;
-
- /* WaStoreMultiplePTEenable:bxt */
- /* This is a requirement according to Hardware specification */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
- I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF);
-
- /* WaSetClckGatingDisableMedia:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
- I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) &
- ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE));
- }
-
- /* WaDisableThreadStallDopClockGating:bxt */
- WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
- STALL_DOP_GATING_DISABLE);
-
- /* WaDisablePooledEuLoadBalancingFix:bxt */
- if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
- WA_SET_BIT_MASKED(FF_SLICE_CS_CHICKEN2,
- GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE);
- }
-
- /* WaDisableSbeCacheDispatchPortSharing:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0)) {
- WA_SET_BIT_MASKED(
- GEN7_HALF_SLICE_CHICKEN1,
- GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
- }
-
- /* WaDisableObjectLevelPreemptionForTrifanOrPolygon:bxt */
- /* WaDisableObjectLevelPreemptionForInstancedDraw:bxt */
- /* WaDisableObjectLevelPreemtionForInstanceId:bxt */
- /* WaDisableLSQCROPERFforOCL:bxt */
- if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
- ret = wa_ring_whitelist_reg(engine, GEN9_CS_DEBUG_MODE1);
- if (ret)
- return ret;
-
- ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
- if (ret)
- return ret;
- }
-
- /* WaProgramL3SqcReg1DefaultForPerf:bxt */
- if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER))
- I915_WRITE(GEN8_L3SQCREG1, L3_GENERAL_PRIO_CREDITS(62) |
- L3_HIGH_PRIO_CREDITS(2));
-
- /* WaToEnableHwFixForPushConstHWBug:bxt */
- if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
- WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
- GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
-
- /* WaInPlaceDecompressionHang:bxt */
- if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
- WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
- GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
-
- return 0;
-}
-
-static int kbl_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen9_init_workarounds(engine);
- if (ret)
- return ret;
-
- /* WaEnableGapsTsvCreditFix:kbl */
- I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
- GEN9_GAPS_TSV_CREDIT_DISABLE));
-
- /* WaDisableDynamicCreditSharing:kbl */
- if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
- WA_SET_BIT(GAMT_CHKN_BIT_REG,
- GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING);
-
- /* WaDisableFenceDestinationToSLM:kbl (pre-prod) */
- if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0))
- WA_SET_BIT_MASKED(HDC_CHICKEN0,
- HDC_FENCE_DEST_SLM_DISABLE);
-
- /* WaToEnableHwFixForPushConstHWBug:kbl */
- if (IS_KBL_REVID(dev_priv, KBL_REVID_C0, REVID_FOREVER))
- WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
- GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
-
- /* WaDisableGafsUnitClkGating:kbl */
- WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
-
- /* WaDisableSbeCacheDispatchPortSharing:kbl */
- WA_SET_BIT_MASKED(
- GEN7_HALF_SLICE_CHICKEN1,
- GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
-
- /* WaInPlaceDecompressionHang:kbl */
- WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
- GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
-
- /* WaDisableLSQCROPERFforOCL:kbl */
- ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int glk_init_workarounds(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- int ret;
-
- ret = gen9_init_workarounds(engine);
- if (ret)
- return ret;
-
- /* WaToEnableHwFixForPushConstHWBug:glk */
- WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
- GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
-
- return 0;
-}
-
-int init_workarounds_ring(struct intel_engine_cs *engine)
-{
- struct drm_i915_private *dev_priv = engine->i915;
-
- WARN_ON(engine->id != RCS);
-
- dev_priv->workarounds.count = 0;
- dev_priv->workarounds.hw_whitelist_count[RCS] = 0;
-
- if (IS_BROADWELL(dev_priv))
- return bdw_init_workarounds(engine);
-
- if (IS_CHERRYVIEW(dev_priv))
- return chv_init_workarounds(engine);
-
- if (IS_SKYLAKE(dev_priv))
- return skl_init_workarounds(engine);
-
- if (IS_BROXTON(dev_priv))
- return bxt_init_workarounds(engine);
-
- if (IS_KABYLAKE(dev_priv))
- return kbl_init_workarounds(engine);
-
- if (IS_GEMINILAKE(dev_priv))
- return glk_init_workarounds(engine);
-
- return 0;
-}
-
static int init_render_ring(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
@@ -1842,142 +1273,6 @@ static int init_phys_status_page(struct intel_engine_cs *engine)
return 0;
}
-int intel_ring_pin(struct intel_ring *ring, unsigned int offset_bias)
-{
- unsigned int flags;
- enum i915_map_type map;
- struct i915_vma *vma = ring->vma;
- void *addr;
- int ret;
-
- GEM_BUG_ON(ring->vaddr);
-
- map = HAS_LLC(ring->engine->i915) ? I915_MAP_WB : I915_MAP_WC;
-
- flags = PIN_GLOBAL;
- if (offset_bias)
- flags |= PIN_OFFSET_BIAS | offset_bias;
- if (vma->obj->stolen)
- flags |= PIN_MAPPABLE;
-
- if (!(vma->flags & I915_VMA_GLOBAL_BIND)) {
- if (flags & PIN_MAPPABLE || map == I915_MAP_WC)
- ret = i915_gem_object_set_to_gtt_domain(vma->obj, true);
- else
- ret = i915_gem_object_set_to_cpu_domain(vma->obj, true);
- if (unlikely(ret))
- return ret;
- }
-
- ret = i915_vma_pin(vma, 0, PAGE_SIZE, flags);
- if (unlikely(ret))
- return ret;
-
- if (i915_vma_is_map_and_fenceable(vma))
- addr = (void __force *)i915_vma_pin_iomap(vma);
- else
- addr = i915_gem_object_pin_map(vma->obj, map);
- if (IS_ERR(addr))
- goto err;
-
- ring->vaddr = addr;
- return 0;
-
-err:
- i915_vma_unpin(vma);
- return PTR_ERR(addr);
-}
-
-void intel_ring_unpin(struct intel_ring *ring)
-{
- GEM_BUG_ON(!ring->vma);
- GEM_BUG_ON(!ring->vaddr);
-
- if (i915_vma_is_map_and_fenceable(ring->vma))
- i915_vma_unpin_iomap(ring->vma);
- else
- i915_gem_object_unpin_map(ring->vma->obj);
- ring->vaddr = NULL;
-
- i915_vma_unpin(ring->vma);
-}
-
-static struct i915_vma *
-intel_ring_create_vma(struct drm_i915_private *dev_priv, int size)
-{
- struct drm_i915_gem_object *obj;
- struct i915_vma *vma;
-
- obj = i915_gem_object_create_stolen(dev_priv, size);
- if (!obj)
- obj = i915_gem_object_create(dev_priv, size);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- /* mark ring buffers as read-only from GPU side by default */
- obj->gt_ro = 1;
-
- vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL);
- if (IS_ERR(vma))
- goto err;
-
- return vma;
-
-err:
- i915_gem_object_put(obj);
- return vma;
-}
-
-struct intel_ring *
-intel_engine_create_ring(struct intel_engine_cs *engine, int size)
-{
- struct intel_ring *ring;
- struct i915_vma *vma;
-
- GEM_BUG_ON(!is_power_of_2(size));
- GEM_BUG_ON(RING_CTL_SIZE(size) & ~RING_NR_PAGES);
-
- ring = kzalloc(sizeof(*ring), GFP_KERNEL);
- if (!ring)
- return ERR_PTR(-ENOMEM);
-
- ring->engine = engine;
-
- INIT_LIST_HEAD(&ring->request_list);
-
- ring->size = size;
- /* Workaround an erratum on the i830 which causes a hang if
- * the TAIL pointer points to within the last 2 cachelines
- * of the buffer.
- */
- ring->effective_size = size;
- if (IS_I830(engine->i915) || IS_I845G(engine->i915))
- ring->effective_size -= 2 * CACHELINE_BYTES;
-
- ring->last_retired_head = -1;
- intel_ring_update_space(ring);
-
- vma = intel_ring_create_vma(engine->i915, size);
- if (IS_ERR(vma)) {
- kfree(ring);
- return ERR_CAST(vma);
- }
- ring->vma = vma;
-
- return ring;
-}
-
-void
-intel_ring_free(struct intel_ring *ring)
-{
- struct drm_i915_gem_object *obj = ring->vma->obj;
-
- i915_vma_close(ring->vma);
- __i915_gem_object_release_unless_active(obj);
-
- kfree(ring);
-}
-
static int context_pin(struct i915_gem_context *ctx)
{
struct i915_vma *vma = ctx->engine[RCS].state;
@@ -2160,135 +1455,6 @@ static int ring_request_alloc(struct drm_i915_gem_request *request)
return 0;
}
-static int wait_for_space(struct drm_i915_gem_request *req, int bytes)
-{
- struct intel_ring *ring = req->ring;
- struct drm_i915_gem_request *target;
- long timeout;
-
- lockdep_assert_held(&req->i915->drm.struct_mutex);
-
- intel_ring_update_space(ring);
- if (ring->space >= bytes)
- return 0;
-
- /*
- * Space is reserved in the ringbuffer for finalising the request,
- * as that cannot be allowed to fail. During request finalisation,
- * reserved_space is set to 0 to stop the overallocation and the
- * assumption is that then we never need to wait (which has the
- * risk of failing with EINTR).
- *
- * See also i915_gem_request_alloc() and i915_add_request().
- */
- GEM_BUG_ON(!req->reserved_space);
-
- list_for_each_entry(target, &ring->request_list, ring_link) {
- unsigned space;
-
- /* Would completion of this request free enough space? */
- space = __intel_ring_space(target->postfix, ring->tail,
- ring->size);
- if (space >= bytes)
- break;
- }
-
- if (WARN_ON(&target->ring_link == &ring->request_list))
- return -ENOSPC;
-
- timeout = i915_wait_request(target,
- I915_WAIT_INTERRUPTIBLE | I915_WAIT_LOCKED,
- MAX_SCHEDULE_TIMEOUT);
- if (timeout < 0)
- return timeout;
-
- i915_gem_request_retire_upto(target);
-
- intel_ring_update_space(ring);
- GEM_BUG_ON(ring->space < bytes);
- return 0;
-}
-
-u32 *intel_ring_begin(struct drm_i915_gem_request *req, int num_dwords)
-{
- struct intel_ring *ring = req->ring;
- int remain_actual = ring->size - ring->tail;
- int remain_usable = ring->effective_size - ring->tail;
- int bytes = num_dwords * sizeof(u32);
- int total_bytes, wait_bytes;
- bool need_wrap = false;
- u32 *cs;
-
- total_bytes = bytes + req->reserved_space;
-
- if (unlikely(bytes > remain_usable)) {
- /*
- * Not enough space for the basic request. So need to flush
- * out the remainder and then wait for base + reserved.
- */
- wait_bytes = remain_actual + total_bytes;
- need_wrap = true;
- } else if (unlikely(total_bytes > remain_usable)) {
- /*
- * The base request will fit but the reserved space
- * falls off the end. So we don't need an immediate wrap
- * and only need to effectively wait for the reserved
- * size space from the start of ringbuffer.
- */
- wait_bytes = remain_actual + req->reserved_space;
- } else {
- /* No wrapping required, just waiting. */
- wait_bytes = total_bytes;
- }
-
- if (wait_bytes > ring->space) {
- int ret = wait_for_space(req, wait_bytes);
- if (unlikely(ret))
- return ERR_PTR(ret);
- }
-
- if (unlikely(need_wrap)) {
- GEM_BUG_ON(remain_actual > ring->space);
- GEM_BUG_ON(ring->tail + remain_actual > ring->size);
-
- /* Fill the tail with MI_NOOP */
- memset(ring->vaddr + ring->tail, 0, remain_actual);
- ring->tail = 0;
- ring->space -= remain_actual;
- }
-
- GEM_BUG_ON(ring->tail > ring->size - bytes);
- cs = ring->vaddr + ring->tail;
- ring->tail += bytes;
- ring->space -= bytes;
- GEM_BUG_ON(ring->space < 0);
-
- return cs;
-}
-
-/* Align the ring tail to a cacheline boundary */
-int intel_ring_cacheline_align(struct drm_i915_gem_request *req)
-{
- int num_dwords =
- (req->ring->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
- u32 *cs;
-
- if (num_dwords == 0)
- return 0;
-
- num_dwords = CACHELINE_BYTES / sizeof(uint32_t) - num_dwords;
- cs = intel_ring_begin(req, num_dwords);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- while (num_dwords--)
- *cs++ = MI_NOOP;
-
- intel_ring_advance(req, cs);
-
- return 0;
-}
-
static void gen6_bsd_submit_request(struct drm_i915_gem_request *request)
{
struct drm_i915_private *dev_priv = request->i915;
--
2.9.3
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