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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/i915/gt/intel_workarounds.c | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_workarounds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_workarounds.c | 3389 |
1 files changed, 3389 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c new file mode 100644 index 0000000000..3ae0dbd39e --- /dev/null +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -0,0 +1,3389 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2014-2018 Intel Corporation + */ + +#include "i915_drv.h" +#include "i915_reg.h" +#include "intel_context.h" +#include "intel_engine_pm.h" +#include "intel_engine_regs.h" +#include "intel_gpu_commands.h" +#include "intel_gt.h" +#include "intel_gt_mcr.h" +#include "intel_gt_regs.h" +#include "intel_ring.h" +#include "intel_workarounds.h" + +/** + * DOC: Hardware workarounds + * + * Hardware workarounds are register programming documented to be executed in + * the driver that fall outside of the normal programming sequences for a + * platform. There are some basic categories of workarounds, depending on + * how/when they are applied: + * + * - Context workarounds: workarounds that touch registers that are + * saved/restored to/from the HW context image. The list is emitted (via Load + * Register Immediate commands) once when initializing the device and saved in + * the default context. That default context is then used on every context + * 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 + * platforms with render and compute engines. In this case (at least) one of + * them need to keeep the workaround programming: the approach taken in the + * driver is to tie those workarounds to the first compute/render engine that + * is registered. When executing with GuC submission, engine resets are + * outside of kernel driver control, hence the list of registers involved in + * written once, on engine initialization, and then passed to GuC, that + * 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 + * programming sequences when switching contexts. The support for workaround + * batchbuffers is enabled these hardware mechanisms: + * + * #. INDIRECT_CTX: A batchbuffer and an offset are provided in the default + * context, pointing the hardware to jump to that location when that offset + * is reached in the context restore. Workaround batchbuffer in the driver + * currently uses this mechanism for all platforms. + * + * #. BB_PER_CTX_PTR: A batchbuffer is provided in the default context, + * pointing the hardware to a buffer to continue executing after the + * engine registers are restored in a context restore sequence. This is + * currently not used in the driver. + * + * - Other: There are WAs that, due to their nature, cannot be applied from a + * central place. Those are peppered around the rest of the code, as needed. + * Workarounds related to the display IP are the main example. + * + * .. [1] Technically, some registers are powercontext saved & restored, so they + * survive a suspend/resume. In practice, writing them again is not too + * costly and simplifies things, so it's the approach taken in the driver. + */ + +static void wa_init_start(struct i915_wa_list *wal, struct intel_gt *gt, + const char *name, const char *engine_name) +{ + wal->gt = gt; + wal->name = name; + wal->engine_name = engine_name; +} + +#define WA_LIST_CHUNK (1 << 4) + +static void wa_init_finish(struct i915_wa_list *wal) +{ + /* Trim unused entries. */ + if (!IS_ALIGNED(wal->count, WA_LIST_CHUNK)) { + struct i915_wa *list = kmemdup(wal->list, + wal->count * sizeof(*list), + GFP_KERNEL); + + if (list) { + kfree(wal->list); + wal->list = list; + } + } + + if (!wal->count) + return; + + drm_dbg(&wal->gt->i915->drm, "Initialized %u %s workarounds on %s\n", + wal->wa_count, wal->name, wal->engine_name); +} + +static enum forcewake_domains +wal_get_fw_for_rmw(struct intel_uncore *uncore, const struct i915_wa_list *wal) +{ + enum forcewake_domains fw = 0; + struct i915_wa *wa; + unsigned int i; + + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) + fw |= intel_uncore_forcewake_for_reg(uncore, + wa->reg, + FW_REG_READ | + FW_REG_WRITE); + + return fw; +} + +static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa) +{ + unsigned int addr = i915_mmio_reg_offset(wa->reg); + struct drm_i915_private *i915 = wal->gt->i915; + unsigned int start = 0, end = wal->count; + const unsigned int grow = WA_LIST_CHUNK; + struct i915_wa *wa_; + + GEM_BUG_ON(!is_power_of_2(grow)); + + if (IS_ALIGNED(wal->count, grow)) { /* Either uninitialized or full. */ + struct i915_wa *list; + + list = kmalloc_array(ALIGN(wal->count + 1, grow), sizeof(*wa), + GFP_KERNEL); + if (!list) { + drm_err(&i915->drm, "No space for workaround init!\n"); + return; + } + + if (wal->list) { + memcpy(list, wal->list, sizeof(*wa) * wal->count); + kfree(wal->list); + } + + wal->list = list; + } + + while (start < end) { + unsigned int mid = start + (end - start) / 2; + + if (i915_mmio_reg_offset(wal->list[mid].reg) < addr) { + start = mid + 1; + } else if (i915_mmio_reg_offset(wal->list[mid].reg) > addr) { + end = mid; + } else { + wa_ = &wal->list[mid]; + + if ((wa->clr | wa_->clr) && !(wa->clr & ~wa_->clr)) { + drm_err(&i915->drm, + "Discarding overwritten w/a for reg %04x (clear: %08x, set: %08x)\n", + i915_mmio_reg_offset(wa_->reg), + wa_->clr, wa_->set); + + wa_->set &= ~wa->clr; + } + + wal->wa_count++; + wa_->set |= wa->set; + wa_->clr |= wa->clr; + wa_->read |= wa->read; + return; + } + } + + wal->wa_count++; + wa_ = &wal->list[wal->count++]; + *wa_ = *wa; + + while (wa_-- > wal->list) { + GEM_BUG_ON(i915_mmio_reg_offset(wa_[0].reg) == + i915_mmio_reg_offset(wa_[1].reg)); + if (i915_mmio_reg_offset(wa_[1].reg) > + i915_mmio_reg_offset(wa_[0].reg)) + break; + + swap(wa_[1], wa_[0]); + } +} + +static void wa_add(struct i915_wa_list *wal, i915_reg_t reg, + u32 clear, u32 set, u32 read_mask, bool masked_reg) +{ + struct i915_wa wa = { + .reg = reg, + .clr = clear, + .set = set, + .read = read_mask, + .masked_reg = masked_reg, + }; + + _wa_add(wal, &wa); +} + +static void wa_mcr_add(struct i915_wa_list *wal, i915_mcr_reg_t reg, + u32 clear, u32 set, u32 read_mask, bool masked_reg) +{ + struct i915_wa wa = { + .mcr_reg = reg, + .clr = clear, + .set = set, + .read = read_mask, + .masked_reg = masked_reg, + .is_mcr = 1, + }; + + _wa_add(wal, &wa); +} + +static void +wa_write_clr_set(struct i915_wa_list *wal, i915_reg_t reg, u32 clear, u32 set) +{ + wa_add(wal, reg, clear, set, clear | set, false); +} + +static void +wa_mcr_write_clr_set(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 clear, u32 set) +{ + wa_mcr_add(wal, reg, clear, set, clear | set, false); +} + +static void +wa_write(struct i915_wa_list *wal, i915_reg_t reg, u32 set) +{ + 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_write_clr_set(wal, reg, set, set); +} + +static void +wa_mcr_write_or(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 set) +{ + wa_mcr_write_clr_set(wal, reg, set, set); +} + +static void +wa_write_clr(struct i915_wa_list *wal, i915_reg_t reg, u32 clr) +{ + wa_write_clr_set(wal, reg, clr, 0); +} + +static void +wa_mcr_write_clr(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 clr) +{ + wa_mcr_write_clr_set(wal, reg, clr, 0); +} + +/* + * WA operations on "masked register". A masked register has the upper 16 bits + * documented as "masked" in b-spec. Its purpose is to allow writing to just a + * portion of the register without a rmw: you simply write in the upper 16 bits + * the mask of bits you are going to modify. + * + * The wa_masked_* family of functions already does the necessary operations to + * calculate the mask based on the parameters passed, so user only has to + * provide the lower 16 bits of that register. + */ + +static void +wa_masked_en(struct i915_wa_list *wal, i915_reg_t reg, u32 val) +{ + wa_add(wal, reg, 0, _MASKED_BIT_ENABLE(val), val, true); +} + +static void +wa_mcr_masked_en(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 val) +{ + wa_mcr_add(wal, reg, 0, _MASKED_BIT_ENABLE(val), val, true); +} + +static void +wa_masked_dis(struct i915_wa_list *wal, i915_reg_t reg, u32 val) +{ + wa_add(wal, reg, 0, _MASKED_BIT_DISABLE(val), val, true); +} + +static void +wa_mcr_masked_dis(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 val) +{ + wa_mcr_add(wal, reg, 0, _MASKED_BIT_DISABLE(val), val, true); +} + +static void +wa_masked_field_set(struct i915_wa_list *wal, i915_reg_t reg, + u32 mask, u32 val) +{ + wa_add(wal, reg, 0, _MASKED_FIELD(mask, val), mask, true); +} + +static void +wa_mcr_masked_field_set(struct i915_wa_list *wal, i915_mcr_reg_t reg, + u32 mask, u32 val) +{ + wa_mcr_add(wal, reg, 0, _MASKED_FIELD(mask, val), mask, true); +} + +static void gen6_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + wa_masked_en(wal, INSTPM, INSTPM_FORCE_ORDERING); +} + +static void gen7_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + wa_masked_en(wal, INSTPM, INSTPM_FORCE_ORDERING); +} + +static void gen8_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + wa_masked_en(wal, INSTPM, INSTPM_FORCE_ORDERING); + + /* WaDisableAsyncFlipPerfMode:bdw,chv */ + wa_masked_en(wal, RING_MI_MODE(RENDER_RING_BASE), ASYNC_FLIP_PERF_DISABLE); + + /* WaDisablePartialInstShootdown:bdw,chv */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, + PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); + + /* 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:bdw,chv */ + /* WaHdcDisableFetchWhenMasked:bdw,chv */ + wa_masked_en(wal, 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_masked_dis(wal, CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE); + + /* Wa4x4STCOptimizationDisable:bdw,chv */ + wa_masked_en(wal, 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_masked_field_set(wal, GEN7_GT_MODE, + GEN6_WIZ_HASHING_MASK, + GEN6_WIZ_HASHING_16x4); +} + +static void bdw_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + gen8_ctx_workarounds_init(engine, wal); + + /* WaDisableThreadStallDopClockGating:bdw (pre-production) */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE); + + /* WaDisableDopClockGating:bdw + * + * Also see the related UCGTCL1 write in bdw_init_clock_gating() + * to disable EUTC clock gating. + */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, + DOP_CLOCK_GATING_DISABLE); + + wa_mcr_masked_en(wal, GEN8_HALF_SLICE_CHICKEN3, + GEN8_SAMPLER_POWER_BYPASS_DIS); + + wa_masked_en(wal, HDC_CHICKEN0, + /* WaForceContextSaveRestoreNonCoherent:bdw */ + HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT | + /* WaDisableFenceDestinationToSLM:bdw (pre-prod) */ + (IS_BROADWELL_GT3(i915) ? HDC_FENCE_DEST_SLM_DISABLE : 0)); +} + +static void chv_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen8_ctx_workarounds_init(engine, wal); + + /* WaDisableThreadStallDopClockGating:chv */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE); + + /* Improve HiZ throughput on CHV. */ + wa_masked_en(wal, HIZ_CHICKEN, CHV_HZ_8X8_MODE_IN_1X); +} + +static void gen9_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + if (HAS_LLC(i915)) { + /* WaCompressedResourceSamplerPbeMediaNewHashMode:skl,kbl + * + * Must match Display Engine. See + * WaCompressedResourceDisplayNewHashMode. + */ + wa_masked_en(wal, COMMON_SLICE_CHICKEN2, + GEN9_PBE_COMPRESSED_HASH_SELECTION); + wa_mcr_masked_en(wal, GEN9_HALF_SLICE_CHICKEN7, + GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR); + } + + /* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk,cfl */ + /* WaDisablePartialInstShootdown:skl,bxt,kbl,glk,cfl */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, + FLOW_CONTROL_ENABLE | + PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); + + /* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt,kbl,glk,cfl */ + /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt,kbl,cfl */ + wa_mcr_masked_en(wal, GEN9_HALF_SLICE_CHICKEN7, + GEN9_ENABLE_YV12_BUGFIX | + GEN9_ENABLE_GPGPU_PREEMPTION); + + /* Wa4x4STCOptimizationDisable:skl,bxt,kbl,glk,cfl */ + /* WaDisablePartialResolveInVc:skl,bxt,kbl,cfl */ + wa_masked_en(wal, CACHE_MODE_1, + GEN8_4x4_STC_OPTIMIZATION_DISABLE | + GEN9_PARTIAL_RESOLVE_IN_VC_DISABLE); + + /* WaCcsTlbPrefetchDisable:skl,bxt,kbl,glk,cfl */ + wa_mcr_masked_dis(wal, GEN9_HALF_SLICE_CHICKEN5, + GEN9_CCS_TLB_PREFETCH_ENABLE); + + /* WaForceContextSaveRestoreNonCoherent:skl,bxt,kbl,cfl */ + wa_masked_en(wal, 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,cfl */ + wa_masked_en(wal, HDC_CHICKEN0, + HDC_FORCE_NON_COHERENT); + + /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt,kbl,cfl */ + if (IS_SKYLAKE(i915) || + IS_KABYLAKE(i915) || + IS_COFFEELAKE(i915) || + IS_COMETLAKE(i915)) + wa_mcr_masked_en(wal, GEN8_HALF_SLICE_CHICKEN3, + GEN8_SAMPLER_POWER_BYPASS_DIS); + + /* WaDisableSTUnitPowerOptimization:skl,bxt,kbl,glk,cfl */ + wa_mcr_masked_en(wal, HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE); + + /* + * Supporting preemption with fine-granularity requires changes in the + * batch buffer programming. Since we can't break old userspace, we + * need to set our default preemption level to safe value. Userspace is + * still able to use more fine-grained preemption levels, since in + * WaEnablePreemptionGranularityControlByUMD we're whitelisting the + * per-ctx register. As such, WaDisable{3D,GPGPU}MidCmdPreemption are + * not real HW workarounds, but merely a way to start using preemption + * while maintaining old contract with userspace. + */ + + /* WaDisable3DMidCmdPreemption:skl,bxt,glk,cfl,[cnl] */ + wa_masked_dis(wal, GEN8_CS_CHICKEN1, GEN9_PREEMPT_3D_OBJECT_LEVEL); + + /* WaDisableGPGPUMidCmdPreemption:skl,bxt,blk,cfl,[cnl] */ + wa_masked_field_set(wal, GEN8_CS_CHICKEN1, + GEN9_PREEMPT_GPGPU_LEVEL_MASK, + GEN9_PREEMPT_GPGPU_COMMAND_LEVEL); + + /* WaClearHIZ_WM_CHICKEN3:bxt,glk */ + if (IS_GEN9_LP(i915)) + wa_masked_en(wal, GEN9_WM_CHICKEN3, GEN9_FACTOR_IN_CLR_VAL_HIZ); +} + +static void skl_tune_iz_hashing(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct intel_gt *gt = engine->gt; + 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(gt->info.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(gt->info.sseu.subslice_7eu[i]) - 1; + vals[i] = 3 - ss; + } + + if (vals[0] == 0 && vals[1] == 0 && vals[2] == 0) + return; + + /* Tune IZ hashing. See intel_device_info_runtime_init() */ + wa_masked_field_set(wal, 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])); +} + +static void skl_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen9_ctx_workarounds_init(engine, wal); + skl_tune_iz_hashing(engine, wal); +} + +static void bxt_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen9_ctx_workarounds_init(engine, wal); + + /* WaDisableThreadStallDopClockGating:bxt */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, + STALL_DOP_GATING_DISABLE); + + /* WaToEnableHwFixForPushConstHWBug:bxt */ + wa_masked_en(wal, COMMON_SLICE_CHICKEN2, + GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION); +} + +static void kbl_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + gen9_ctx_workarounds_init(engine, wal); + + /* WaToEnableHwFixForPushConstHWBug:kbl */ + if (IS_KABYLAKE(i915) && IS_GRAPHICS_STEP(i915, STEP_C0, STEP_FOREVER)) + wa_masked_en(wal, COMMON_SLICE_CHICKEN2, + GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION); + + /* WaDisableSbeCacheDispatchPortSharing:kbl */ + wa_mcr_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1, + GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE); +} + +static void glk_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen9_ctx_workarounds_init(engine, wal); + + /* WaToEnableHwFixForPushConstHWBug:glk */ + wa_masked_en(wal, COMMON_SLICE_CHICKEN2, + GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION); +} + +static void cfl_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen9_ctx_workarounds_init(engine, wal); + + /* WaToEnableHwFixForPushConstHWBug:cfl */ + wa_masked_en(wal, COMMON_SLICE_CHICKEN2, + GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION); + + /* WaDisableSbeCacheDispatchPortSharing:cfl */ + wa_mcr_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1, + GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE); +} + +static void icl_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + /* Wa_1406697149 (WaDisableBankHangMode:icl) */ + wa_write(wal, GEN8_L3CNTLREG, GEN8_ERRDETBCTRL); + + /* 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_mcr_masked_en(wal, ICL_HDC_MODE, HDC_FORCE_NON_COHERENT); + + /* WaEnableFloatBlendOptimization:icl */ + wa_mcr_add(wal, GEN10_CACHE_MODE_SS, 0, + _MASKED_BIT_ENABLE(FLOAT_BLEND_OPTIMIZATION_ENABLE), + 0 /* write-only, so skip validation */, + true); + + /* WaDisableGPGPUMidThreadPreemption:icl */ + wa_masked_field_set(wal, GEN8_CS_CHICKEN1, + GEN9_PREEMPT_GPGPU_LEVEL_MASK, + GEN9_PREEMPT_GPGPU_THREAD_GROUP_LEVEL); + + /* allow headerless messages for preemptible GPGPU context */ + wa_mcr_masked_en(wal, GEN10_SAMPLER_MODE, + GEN11_SAMPLER_ENABLE_HEADLESS_MSG); + + /* Wa_1604278689:icl,ehl */ + wa_write(wal, IVB_FBC_RT_BASE, 0xFFFFFFFF & ~ILK_FBC_RT_VALID); + wa_write_clr_set(wal, IVB_FBC_RT_BASE_UPPER, + 0, + 0xFFFFFFFF); + + /* Wa_1406306137:icl,ehl */ + wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, GEN11_DIS_PICK_2ND_EU); +} + +/* + * These settings aren't actually workarounds, but general tuning settings that + * need to be programmed on dg2 platform. + */ +static void dg2_ctx_gt_tuning_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + wa_mcr_masked_en(wal, CHICKEN_RASTER_2, TBIMR_FAST_CLIP); + wa_mcr_write_clr_set(wal, XEHP_L3SQCREG5, L3_PWM_TIMER_INIT_VAL_MASK, + REG_FIELD_PREP(L3_PWM_TIMER_INIT_VAL_MASK, 0x7f)); + wa_mcr_write_clr_set(wal, XEHP_FF_MODE2, FF_MODE2_TDS_TIMER_MASK, + FF_MODE2_TDS_TIMER_128); +} + +static void gen12_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + /* + * Wa_1409142259:tgl,dg1,adl-p + * Wa_1409347922:tgl,dg1,adl-p + * Wa_1409252684:tgl,dg1,adl-p + * Wa_1409217633:tgl,dg1,adl-p + * Wa_1409207793:tgl,dg1,adl-p + * Wa_1409178076:tgl,dg1,adl-p + * Wa_1408979724:tgl,dg1,adl-p + * Wa_14010443199:tgl,rkl,dg1,adl-p + * Wa_14010698770:tgl,rkl,dg1,adl-s,adl-p + * Wa_1409342910:tgl,rkl,dg1,adl-s,adl-p + */ + wa_masked_en(wal, GEN11_COMMON_SLICE_CHICKEN3, + GEN12_DISABLE_CPS_AWARE_COLOR_PIPE); + + /* WaDisableGPGPUMidThreadPreemption:gen12 */ + wa_masked_field_set(wal, GEN8_CS_CHICKEN1, + GEN9_PREEMPT_GPGPU_LEVEL_MASK, + GEN9_PREEMPT_GPGPU_THREAD_GROUP_LEVEL); + + /* + * Wa_16011163337 - GS_TIMER + * + * TDS_TIMER: Although some platforms refer to it as Wa_1604555607, we + * need to program it even on those that don't explicitly list that + * workaround. + * + * Note that the programming of GEN12_FF_MODE2 is further modified + * according to the FF_MODE2 guidance given by Wa_1608008084. + * Wa_1608008084 tells us the FF_MODE2 register will return the wrong + * value when read from the CPU. + * + * The default value for this register is zero for all fields. + * So instead of doing a RMW we should just write the desired values + * for TDS and GS timers. Note that since the readback can't be trusted, + * the clear mask is just set to ~0 to make sure other bits are not + * inadvertently set. For the same reason read verification is ignored. + */ + wa_add(wal, + GEN12_FF_MODE2, + ~0, + FF_MODE2_TDS_TIMER_128 | FF_MODE2_GS_TIMER_224, + 0, false); + + if (!IS_DG1(i915)) { + /* Wa_1806527549 */ + wa_masked_en(wal, HIZ_CHICKEN, HZ_DEPTH_TEST_LE_GE_OPT_DISABLE); + + /* Wa_1606376872 */ + wa_masked_en(wal, COMMON_SLICE_CHICKEN4, DISABLE_TDC_LOAD_BALANCING_CALC); + } +} + +static void dg1_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + gen12_ctx_workarounds_init(engine, wal); + + /* Wa_1409044764 */ + wa_masked_dis(wal, GEN11_COMMON_SLICE_CHICKEN3, + DG1_FLOAT_POINT_BLEND_OPT_STRICT_MODE_EN); + + /* Wa_22010493298 */ + wa_masked_en(wal, HIZ_CHICKEN, + DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE); +} + +static void dg2_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + dg2_ctx_gt_tuning_init(engine, wal); + + /* Wa_16011186671:dg2_g11 */ + if (IS_DG2_GRAPHICS_STEP(engine->i915, G11, STEP_A0, STEP_B0)) { + wa_mcr_masked_dis(wal, VFLSKPD, DIS_MULT_MISS_RD_SQUASH); + wa_mcr_masked_en(wal, VFLSKPD, DIS_OVER_FETCH_CACHE); + } + + if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0)) { + /* Wa_14010469329:dg2_g10 */ + wa_mcr_masked_en(wal, XEHP_COMMON_SLICE_CHICKEN3, + XEHP_DUAL_SIMD8_SEQ_MERGE_DISABLE); + + /* + * Wa_22010465075:dg2_g10 + * Wa_22010613112:dg2_g10 + * Wa_14010698770:dg2_g10 + */ + wa_mcr_masked_en(wal, XEHP_COMMON_SLICE_CHICKEN3, + GEN12_DISABLE_CPS_AWARE_COLOR_PIPE); + } + + /* Wa_16013271637:dg2 */ + wa_mcr_masked_en(wal, XEHP_SLICE_COMMON_ECO_CHICKEN1, + MSC_MSAA_REODER_BUF_BYPASS_DISABLE); + + /* Wa_14014947963:dg2 */ + if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_B0, STEP_FOREVER) || + IS_DG2_G11(engine->i915) || IS_DG2_G12(engine->i915)) + wa_masked_field_set(wal, VF_PREEMPTION, PREEMPTION_VERTEX_COUNT, 0x4000); + + /* 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_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_18019271663:dg2 */ + wa_masked_en(wal, CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE); +} + +static void mtl_ctx_gt_tuning_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + dg2_ctx_gt_tuning_init(engine, wal); + + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_B0, STEP_FOREVER) || + IS_MTL_GRAPHICS_STEP(i915, P, STEP_B0, STEP_FOREVER)) + wa_add(wal, DRAW_WATERMARK, VERT_WM_VAL, 0x3FF, 0, false); +} + +static void mtl_ctx_workarounds_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + mtl_ctx_gt_tuning_init(engine, wal); + + 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) +{ + /* + * This is a "fake" workaround defined by software to ensure we + * maintain reliable, backward-compatible behavior for userspace with + * regards to how nested MI_BATCH_BUFFER_START commands are handled. + * + * The per-context setting of MI_MODE[12] determines whether the bits + * of a nested MI_BATCH_BUFFER_START instruction should be interpreted + * in the traditional manner or whether they should instead use a new + * tgl+ meaning that breaks backward compatibility, but allows nesting + * into 3rd-level batchbuffers. When this new capability was first + * added in TGL, it remained off by default unless a context + * intentionally opted in to the new behavior. However Xe_HPG now + * flips this on by default and requires that we explicitly opt out if + * we don't want the new behavior. + * + * From a SW perspective, we want to maintain the backward-compatible + * behavior for userspace, so we'll apply a fake workaround to set it + * back to the legacy behavior on platforms where the hardware default + * is to break compatibility. At the moment there is no Linux + * userspace that utilizes third-level batchbuffers, so this will avoid + * userspace from needing to make any changes. using the legacy + * meaning is the correct thing to do. If/when we have userspace + * consumers that want to utilize third-level batch nesting, we can + * provide a context parameter to allow them to opt-in. + */ + wa_masked_dis(wal, RING_MI_MODE(engine->mmio_base), TGL_NESTED_BB_EN); +} + +static void gen12_ctx_gt_mocs_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + u8 mocs; + + /* + * Some blitter commands do not have a field for MOCS, those + * commands will use MOCS index pointed by BLIT_CCTL. + * BLIT_CCTL registers are needed to be programmed to un-cached. + */ + if (engine->class == COPY_ENGINE_CLASS) { + mocs = engine->gt->mocs.uc_index; + wa_write_clr_set(wal, + BLIT_CCTL(engine->mmio_base), + BLIT_CCTL_MASK, + BLIT_CCTL_MOCS(mocs, mocs)); + } +} + +/* + * gen12_ctx_gt_fake_wa_init() aren't programmingan official workaround + * defined by the hardware team, but it programming general context registers. + * Adding those context register programming in context workaround + * allow us to use the wa framework for proper application and validation. + */ +static void +gen12_ctx_gt_fake_wa_init(struct intel_engine_cs *engine, + struct i915_wa_list *wal) +{ + if (GRAPHICS_VER_FULL(engine->i915) >= IP_VER(12, 55)) + fakewa_disable_nestedbb_mode(engine, wal); + + gen12_ctx_gt_mocs_init(engine, wal); +} + +static void +__intel_engine_init_ctx_wa(struct intel_engine_cs *engine, + struct i915_wa_list *wal, + const char *name) +{ + struct drm_i915_private *i915 = engine->i915; + + wa_init_start(wal, engine->gt, name, engine->name); + + /* Applies to all engines */ + /* + * Fake workarounds are not the actual workaround but + * programming of context registers using workaround framework. + */ + if (GRAPHICS_VER(i915) >= 12) + gen12_ctx_gt_fake_wa_init(engine, wal); + + if (engine->class != RENDER_CLASS) + goto done; + + 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); + else if (IS_XEHPSDV(i915)) + ; /* noop; none at this time */ + else if (IS_DG1(i915)) + dg1_ctx_workarounds_init(engine, wal); + else if (GRAPHICS_VER(i915) == 12) + gen12_ctx_workarounds_init(engine, wal); + else if (GRAPHICS_VER(i915) == 11) + icl_ctx_workarounds_init(engine, wal); + else if (IS_COFFEELAKE(i915) || IS_COMETLAKE(i915)) + cfl_ctx_workarounds_init(engine, wal); + else if (IS_GEMINILAKE(i915)) + glk_ctx_workarounds_init(engine, wal); + else if (IS_KABYLAKE(i915)) + kbl_ctx_workarounds_init(engine, wal); + else if (IS_BROXTON(i915)) + bxt_ctx_workarounds_init(engine, wal); + else if (IS_SKYLAKE(i915)) + skl_ctx_workarounds_init(engine, wal); + else if (IS_CHERRYVIEW(i915)) + chv_ctx_workarounds_init(engine, wal); + else if (IS_BROADWELL(i915)) + bdw_ctx_workarounds_init(engine, wal); + else if (GRAPHICS_VER(i915) == 7) + gen7_ctx_workarounds_init(engine, wal); + else if (GRAPHICS_VER(i915) == 6) + gen6_ctx_workarounds_init(engine, wal); + else if (GRAPHICS_VER(i915) < 8) + ; + else + MISSING_CASE(GRAPHICS_VER(i915)); + +done: + wa_init_finish(wal); +} + +void intel_engine_init_ctx_wa(struct intel_engine_cs *engine) +{ + __intel_engine_init_ctx_wa(engine, &engine->ctx_wa_list, "context"); +} + +int intel_engine_emit_ctx_wa(struct i915_request *rq) +{ + struct i915_wa_list *wal = &rq->engine->ctx_wa_list; + struct intel_uncore *uncore = rq->engine->uncore; + enum forcewake_domains fw; + unsigned long flags; + struct i915_wa *wa; + unsigned int i; + u32 *cs; + int ret; + + if (wal->count == 0) + return 0; + + ret = rq->engine->emit_flush(rq, EMIT_BARRIER); + if (ret) + return ret; + + cs = intel_ring_begin(rq, (wal->count * 2 + 2)); + if (IS_ERR(cs)) + return PTR_ERR(cs); + + fw = wal_get_fw_for_rmw(uncore, wal); + + intel_gt_mcr_lock(wal->gt, &flags); + spin_lock(&uncore->lock); + intel_uncore_forcewake_get__locked(uncore, fw); + + *cs++ = MI_LOAD_REGISTER_IMM(wal->count); + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + u32 val; + + /* Skip reading the register if it's not really needed */ + if (wa->masked_reg || (wa->clr | wa->set) == U32_MAX) { + val = wa->set; + } else { + val = wa->is_mcr ? + intel_gt_mcr_read_any_fw(wal->gt, wa->mcr_reg) : + intel_uncore_read_fw(uncore, wa->reg); + val &= ~wa->clr; + val |= wa->set; + } + + *cs++ = i915_mmio_reg_offset(wa->reg); + *cs++ = val; + } + *cs++ = MI_NOOP; + + intel_uncore_forcewake_put__locked(uncore, fw); + spin_unlock(&uncore->lock); + intel_gt_mcr_unlock(wal->gt, flags); + + intel_ring_advance(rq, cs); + + ret = rq->engine->emit_flush(rq, EMIT_BARRIER); + if (ret) + return ret; + + return 0; +} + +static void +gen4_gt_workarounds_init(struct intel_gt *gt, + struct i915_wa_list *wal) +{ + /* WaDisable_RenderCache_OperationalFlush:gen4,ilk */ + wa_masked_dis(wal, CACHE_MODE_0, RC_OP_FLUSH_ENABLE); +} + +static void +g4x_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen4_gt_workarounds_init(gt, wal); + + /* WaDisableRenderCachePipelinedFlush:g4x,ilk */ + wa_masked_en(wal, CACHE_MODE_0, CM0_PIPELINED_RENDER_FLUSH_DISABLE); +} + +static void +ilk_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + g4x_gt_workarounds_init(gt, wal); + + wa_masked_en(wal, _3D_CHICKEN2, _3D_CHICKEN2_WM_READ_PIPELINED); +} + +static void +snb_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ +} + +static void +ivb_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ + wa_masked_dis(wal, + GEN7_COMMON_SLICE_CHICKEN1, + GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); + + /* WaApplyL3ControlAndL3ChickenMode:ivb */ + wa_write(wal, GEN7_L3CNTLREG1, GEN7_WA_FOR_GEN7_L3_CONTROL); + wa_write(wal, GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE); + + /* WaForceL3Serialization:ivb */ + wa_write_clr(wal, GEN7_L3SQCREG4, L3SQ_URB_READ_CAM_MATCH_DISABLE); +} + +static void +vlv_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + /* WaForceL3Serialization:vlv */ + wa_write_clr(wal, GEN7_L3SQCREG4, L3SQ_URB_READ_CAM_MATCH_DISABLE); + + /* + * WaIncreaseL3CreditsForVLVB0:vlv + * This is the hardware default actually. + */ + wa_write(wal, GEN7_L3SQCREG1, VLV_B0_WA_L3SQCREG1_VALUE); +} + +static void +hsw_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + /* L3 caching of data atomics doesn't work -- disable it. */ + wa_write(wal, HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); + + wa_add(wal, + HSW_ROW_CHICKEN3, 0, + _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE), + 0 /* XXX does this reg exist? */, true); + + /* WaVSRefCountFullforceMissDisable:hsw */ + wa_write_clr(wal, GEN7_FF_THREAD_MODE, GEN7_FF_VS_REF_CNT_FFME); +} + +static void +gen9_wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal) +{ + const struct sseu_dev_info *sseu = &to_gt(i915)->info.sseu; + unsigned int slice, subslice; + u32 mcr, mcr_mask; + + GEM_BUG_ON(GRAPHICS_VER(i915) != 9); + + /* + * WaProgramMgsrForCorrectSliceSpecificMmioReads:gen9,glk,kbl,cml + * Before any MMIO read into slice/subslice specific registers, MCR + * packet control register needs to be programmed to point to any + * enabled s/ss pair. Otherwise, incorrect values will be returned. + * This means each subsequent MMIO read will be forwarded to an + * specific s/ss combination, but this is OK since these registers + * are consistent across s/ss in almost all cases. In the rare + * occasions, such as INSTDONE, where this value is dependent + * on s/ss combo, the read should be done with read_subslice_reg. + */ + slice = ffs(sseu->slice_mask) - 1; + GEM_BUG_ON(slice >= ARRAY_SIZE(sseu->subslice_mask.hsw)); + subslice = ffs(intel_sseu_get_hsw_subslices(sseu, slice)); + GEM_BUG_ON(!subslice); + subslice--; + + /* + * We use GEN8_MCR..() macros to calculate the |mcr| value for + * Gen9 to address WaProgramMgsrForCorrectSliceSpecificMmioReads + */ + mcr = GEN8_MCR_SLICE(slice) | GEN8_MCR_SUBSLICE(subslice); + mcr_mask = GEN8_MCR_SLICE_MASK | GEN8_MCR_SUBSLICE_MASK; + + drm_dbg(&i915->drm, "MCR slice:%d/subslice:%d = %x\n", slice, subslice, mcr); + + wa_write_clr_set(wal, GEN8_MCR_SELECTOR, mcr_mask, mcr); +} + +static void +gen9_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = gt->i915; + + /* WaProgramMgsrForCorrectSliceSpecificMmioReads:glk,kbl,cml,gen9 */ + gen9_wa_init_mcr(i915, wal); + + /* WaDisableKillLogic:bxt,skl,kbl */ + if (!IS_COFFEELAKE(i915) && !IS_COMETLAKE(i915)) + wa_write_or(wal, + GAM_ECOCHK, + ECOCHK_DIS_TLB); + + if (HAS_LLC(i915)) { + /* WaCompressedResourceSamplerPbeMediaNewHashMode:skl,kbl + * + * Must match Display Engine. See + * WaCompressedResourceDisplayNewHashMode. + */ + wa_write_or(wal, + MMCD_MISC_CTRL, + MMCD_PCLA | MMCD_HOTSPOT_EN); + } + + /* WaDisableHDCInvalidation:skl,bxt,kbl,cfl */ + wa_write_or(wal, + GAM_ECOCHK, + BDW_DISABLE_HDC_INVALIDATION); +} + +static void +skl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen9_gt_workarounds_init(gt, wal); + + /* WaDisableGafsUnitClkGating:skl */ + wa_write_or(wal, + GEN7_UCGCTL4, + GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE); + + /* WaInPlaceDecompressionHang:skl */ + if (IS_SKYLAKE(gt->i915) && IS_GRAPHICS_STEP(gt->i915, STEP_A0, STEP_H0)) + wa_write_or(wal, + GEN9_GAMT_ECO_REG_RW_IA, + GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS); +} + +static void +kbl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen9_gt_workarounds_init(gt, wal); + + /* WaDisableDynamicCreditSharing:kbl */ + if (IS_KABYLAKE(gt->i915) && IS_GRAPHICS_STEP(gt->i915, 0, STEP_C0)) + wa_write_or(wal, + GAMT_CHKN_BIT_REG, + GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING); + + /* WaDisableGafsUnitClkGating:kbl */ + wa_write_or(wal, + GEN7_UCGCTL4, + GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE); + + /* WaInPlaceDecompressionHang:kbl */ + wa_write_or(wal, + GEN9_GAMT_ECO_REG_RW_IA, + GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS); +} + +static void +glk_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen9_gt_workarounds_init(gt, wal); +} + +static void +cfl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen9_gt_workarounds_init(gt, wal); + + /* WaDisableGafsUnitClkGating:cfl */ + wa_write_or(wal, + GEN7_UCGCTL4, + GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE); + + /* WaInPlaceDecompressionHang:cfl */ + wa_write_or(wal, + GEN9_GAMT_ECO_REG_RW_IA, + GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS); +} + +static void __set_mcr_steering(struct i915_wa_list *wal, + i915_reg_t steering_reg, + unsigned int slice, unsigned int subslice) +{ + u32 mcr, mcr_mask; + + mcr = GEN11_MCR_SLICE(slice) | GEN11_MCR_SUBSLICE(subslice); + mcr_mask = GEN11_MCR_SLICE_MASK | GEN11_MCR_SUBSLICE_MASK; + + wa_write_clr_set(wal, steering_reg, mcr_mask, mcr); +} + +static void debug_dump_steering(struct intel_gt *gt) +{ + struct drm_printer p = drm_debug_printer("MCR Steering:"); + + if (drm_debug_enabled(DRM_UT_DRIVER)) + intel_gt_mcr_report_steering(&p, gt, false); +} + +static void __add_mcr_wa(struct intel_gt *gt, struct i915_wa_list *wal, + unsigned int slice, unsigned int subslice) +{ + __set_mcr_steering(wal, GEN8_MCR_SELECTOR, slice, subslice); + + gt->default_steering.groupid = slice; + gt->default_steering.instanceid = subslice; + + debug_dump_steering(gt); +} + +static void +icl_wa_init_mcr(struct intel_gt *gt, struct i915_wa_list *wal) +{ + const struct sseu_dev_info *sseu = >->info.sseu; + unsigned int subslice; + + GEM_BUG_ON(GRAPHICS_VER(gt->i915) < 11); + GEM_BUG_ON(hweight8(sseu->slice_mask) > 1); + + /* + * Although a platform may have subslices, we need to always steer + * reads to the lowest instance that isn't fused off. When Render + * Power Gating is enabled, grabbing forcewake will only power up a + * single subslice (the "minconfig") if there isn't a real workload + * that needs to be run; this means that if we steer register reads to + * one of the higher subslices, we run the risk of reading back 0's or + * random garbage. + */ + subslice = __ffs(intel_sseu_get_hsw_subslices(sseu, 0)); + + /* + * If the subslice we picked above also steers us to a valid L3 bank, + * then we can just rely on the default steering and won't need to + * worry about explicitly re-steering L3BANK reads later. + */ + if (gt->info.l3bank_mask & BIT(subslice)) + gt->steering_table[L3BANK] = NULL; + + __add_mcr_wa(gt, wal, 0, subslice); +} + +static void +xehp_init_mcr(struct intel_gt *gt, struct i915_wa_list *wal) +{ + const struct sseu_dev_info *sseu = >->info.sseu; + unsigned long slice, subslice = 0, slice_mask = 0; + u32 lncf_mask = 0; + int i; + + /* + * On Xe_HP the steering increases in complexity. There are now several + * more units that require steering and we're not guaranteed to be able + * to find a common setting for all of them. These are: + * - GSLICE (fusable) + * - DSS (sub-unit within gslice; fusable) + * - L3 Bank (fusable) + * - MSLICE (fusable) + * - LNCF (sub-unit within mslice; always present if mslice is present) + * + * We'll do our default/implicit steering based on GSLICE (in the + * sliceid field) and DSS (in the subsliceid field). If we can + * find overlap between the valid MSLICE and/or LNCF values with + * a suitable GSLICE, then we can just re-use the default value and + * skip and explicit steering at runtime. + * + * We only need to look for overlap between GSLICE/MSLICE/LNCF to find + * a valid sliceid value. DSS steering is the only type of steering + * that utilizes the 'subsliceid' bits. + * + * Also note that, even though the steering domain is called "GSlice" + * and it is encoded in the register using the gslice format, the spec + * says that the combined (geometry | compute) fuse should be used to + * select the steering. + */ + + /* Find the potential gslice candidates */ + slice_mask = intel_slicemask_from_xehp_dssmask(sseu->subslice_mask, + GEN_DSS_PER_GSLICE); + + /* + * Find the potential LNCF candidates. Either LNCF within a valid + * mslice is fine. + */ + for_each_set_bit(i, >->info.mslice_mask, GEN12_MAX_MSLICES) + lncf_mask |= (0x3 << (i * 2)); + + /* + * Are there any sliceid values that work for both GSLICE and LNCF + * steering? + */ + if (slice_mask & lncf_mask) { + slice_mask &= lncf_mask; + gt->steering_table[LNCF] = NULL; + } + + /* How about sliceid values that also work for MSLICE steering? */ + if (slice_mask & gt->info.mslice_mask) { + slice_mask &= gt->info.mslice_mask; + gt->steering_table[MSLICE] = NULL; + } + + if (IS_XEHPSDV(gt->i915) && slice_mask & BIT(0)) + gt->steering_table[GAM] = NULL; + + slice = __ffs(slice_mask); + subslice = intel_sseu_find_first_xehp_dss(sseu, GEN_DSS_PER_GSLICE, slice) % + GEN_DSS_PER_GSLICE; + + __add_mcr_wa(gt, wal, slice, subslice); + + /* + * SQIDI ranges are special because they use different steering + * registers than everything else we work with. On XeHP SDV and + * DG2-G10, any value in the steering registers will work fine since + * all instances are present, but DG2-G11 only has SQIDI instances at + * ID's 2 and 3, so we need to steer to one of those. For simplicity + * we'll just steer to a hardcoded "2" since that value will work + * everywhere. + */ + __set_mcr_steering(wal, MCFG_MCR_SELECTOR, 0, 2); + __set_mcr_steering(wal, SF_MCR_SELECTOR, 0, 2); + + /* + * On DG2, GAM registers have a dedicated steering control register + * and must always be programmed to a hardcoded groupid of "1." + */ + if (IS_DG2(gt->i915)) + __set_mcr_steering(wal, GAM_MCR_SELECTOR, 1, 0); +} + +static void +pvc_init_mcr(struct intel_gt *gt, struct i915_wa_list *wal) +{ + unsigned int dss; + + /* + * Setup implicit steering for COMPUTE and DSS ranges to the first + * non-fused-off DSS. All other types of MCR registers will be + * explicitly steered. + */ + dss = intel_sseu_find_first_xehp_dss(>->info.sseu, 0, 0); + __add_mcr_wa(gt, wal, dss / GEN_DSS_PER_CSLICE, dss % GEN_DSS_PER_CSLICE); +} + +static void +icl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = gt->i915; + + icl_wa_init_mcr(gt, wal); + + /* WaModifyGamTlbPartitioning:icl */ + wa_write_clr_set(wal, + GEN11_GACB_PERF_CTRL, + GEN11_HASH_CTRL_MASK, + GEN11_HASH_CTRL_BIT0 | GEN11_HASH_CTRL_BIT4); + + /* Wa_1405766107:icl + * Formerly known as WaCL2SFHalfMaxAlloc + */ + wa_write_or(wal, + GEN11_LSN_UNSLCVC, + GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC | + GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MAXALLOC); + + /* Wa_220166154:icl + * Formerly known as WaDisCtxReload + */ + wa_write_or(wal, + GEN8_GAMW_ECO_DEV_RW_IA, + GAMW_ECO_DEV_CTX_RELOAD_DISABLE); + + /* Wa_1406463099:icl + * Formerly known as WaGamTlbPendError + */ + wa_write_or(wal, + GAMT_CHKN_BIT_REG, + GAMT_CHKN_DISABLE_L3_COH_PIPE); + + /* + * Wa_1408615072:icl,ehl (vsunit) + * Wa_1407596294:icl,ehl (hsunit) + */ + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE, + VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS); + + /* Wa_1407352427:icl,ehl */ + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2, + PSDUNIT_CLKGATE_DIS); + + /* Wa_1406680159:icl,ehl */ + wa_mcr_write_or(wal, + GEN11_SUBSLICE_UNIT_LEVEL_CLKGATE, + GWUNIT_CLKGATE_DIS); + + /* Wa_1607087056:icl,ehl,jsl */ + if (IS_ICELAKE(i915) || + ((IS_JASPERLAKE(i915) || IS_ELKHARTLAKE(i915)) && + IS_GRAPHICS_STEP(i915, STEP_A0, STEP_B0))) + wa_write_or(wal, + GEN11_SLICE_UNIT_LEVEL_CLKGATE, + L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS); + + /* + * This is not a documented workaround, but rather an optimization + * to reduce sampler power. + */ + wa_mcr_write_clr(wal, GEN10_DFR_RATIO_EN_AND_CHICKEN, DFR_DISABLE); +} + +/* + * Though there are per-engine instances of these registers, + * they retain their value through engine resets and should + * only be provided on the GT workaround list rather than + * the engine-specific workaround list. + */ +static void +wa_14011060649(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct intel_engine_cs *engine; + int id; + + for_each_engine(engine, gt, id) { + if (engine->class != VIDEO_DECODE_CLASS || + (engine->instance % 2)) + continue; + + wa_write_or(wal, VDBOX_CGCTL3F10(engine->mmio_base), + IECPUNIT_CLKGATE_DIS); + } +} + +static void +gen12_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + icl_wa_init_mcr(gt, wal); + + /* Wa_14011060649:tgl,rkl,dg1,adl-s,adl-p */ + wa_14011060649(gt, wal); + + /* Wa_14011059788:tgl,rkl,adl-s,dg1,adl-p */ + wa_mcr_write_or(wal, GEN10_DFR_RATIO_EN_AND_CHICKEN, DFR_DISABLE); + + /* + * Wa_14015795083 + * + * Firmware on some gen12 platforms locks the MISCCPCTL register, + * preventing i915 from modifying it for this workaround. Skip the + * readback verification for this workaround on debug builds; if the + * workaround doesn't stick due to firmware behavior, it's not an error + * that we want CI to flag. + */ + wa_add(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE, + 0, 0, false); +} + +static void +dg1_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + gen12_gt_workarounds_init(gt, wal); + + /* Wa_1409420604:dg1 */ + wa_mcr_write_or(wal, SUBSLICE_UNIT_LEVEL_CLKGATE2, + CPSSUNIT_CLKGATE_DIS); + + /* Wa_1408615072:dg1 */ + /* Empirical testing shows this register is unaffected by engine reset. */ + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2, VSUNIT_CLKGATE_DIS_TGL); +} + +static void +xehpsdv_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = gt->i915; + + xehp_init_mcr(gt, wal); + + /* Wa_1409757795:xehpsdv */ + wa_mcr_write_or(wal, SCCGCTL94DC, CG3DDISURB); + + /* Wa_18011725039:xehpsdv */ + if (IS_XEHPSDV_GRAPHICS_STEP(i915, STEP_A1, STEP_B0)) { + wa_mcr_masked_dis(wal, MLTICTXCTL, TDONRENDER); + wa_mcr_write_or(wal, L3SQCREG1_CCS0, FLUSHALLNONCOH); + } + + /* Wa_16011155590:xehpsdv */ + if (IS_XEHPSDV_GRAPHICS_STEP(i915, STEP_A0, STEP_B0)) + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE, + TSGUNIT_CLKGATE_DIS); + + /* Wa_14011780169:xehpsdv */ + if (IS_XEHPSDV_GRAPHICS_STEP(i915, STEP_B0, STEP_FOREVER)) { + wa_write_or(wal, UNSLCGCTL9440, GAMTLBOACS_CLKGATE_DIS | + GAMTLBVDBOX7_CLKGATE_DIS | + GAMTLBVDBOX6_CLKGATE_DIS | + GAMTLBVDBOX5_CLKGATE_DIS | + GAMTLBVDBOX4_CLKGATE_DIS | + GAMTLBVDBOX3_CLKGATE_DIS | + GAMTLBVDBOX2_CLKGATE_DIS | + GAMTLBVDBOX1_CLKGATE_DIS | + GAMTLBVDBOX0_CLKGATE_DIS | + GAMTLBKCR_CLKGATE_DIS | + GAMTLBGUC_CLKGATE_DIS | + GAMTLBBLT_CLKGATE_DIS); + wa_write_or(wal, UNSLCGCTL9444, GAMTLBGFXA0_CLKGATE_DIS | + GAMTLBGFXA1_CLKGATE_DIS | + GAMTLBCOMPA0_CLKGATE_DIS | + GAMTLBCOMPA1_CLKGATE_DIS | + GAMTLBCOMPB0_CLKGATE_DIS | + GAMTLBCOMPB1_CLKGATE_DIS | + GAMTLBCOMPC0_CLKGATE_DIS | + GAMTLBCOMPC1_CLKGATE_DIS | + GAMTLBCOMPD0_CLKGATE_DIS | + GAMTLBCOMPD1_CLKGATE_DIS | + GAMTLBMERT_CLKGATE_DIS | + GAMTLBVEBOX3_CLKGATE_DIS | + GAMTLBVEBOX2_CLKGATE_DIS | + GAMTLBVEBOX1_CLKGATE_DIS | + GAMTLBVEBOX0_CLKGATE_DIS); + } + + /* Wa_16012725990:xehpsdv */ + if (IS_XEHPSDV_GRAPHICS_STEP(i915, STEP_A1, STEP_FOREVER)) + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE, VFUNIT_CLKGATE_DIS); + + /* 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); + + /* Wa_14010670810:xehpsdv */ + wa_mcr_write_or(wal, XEHP_L3NODEARBCFG, XEHP_LNESPARE); +} + +static void +dg2_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct intel_engine_cs *engine; + int id; + + xehp_init_mcr(gt, wal); + + /* Wa_14011060649:dg2 */ + wa_14011060649(gt, wal); + + /* + * Although there are per-engine instances of these registers, + * they technically exist outside the engine itself and are not + * impacted by engine resets. Furthermore, they're part of the + * GuC blacklist so trying to treat them as engine workarounds + * will result in GuC initialization failure and a wedged GPU. + */ + for_each_engine(engine, gt, id) { + if (engine->class != VIDEO_DECODE_CLASS) + continue; + + /* Wa_16010515920:dg2_g10 */ + if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_B0)) + wa_write_or(wal, VDBOX_CGCTL3F18(engine->mmio_base), + ALNUNIT_CLKGATE_DIS); + } + + if (IS_DG2_G10(gt->i915)) { + /* Wa_22010523718:dg2 */ + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE, + CG3DDISCFEG_CLKGATE_DIS); + + /* Wa_14011006942:dg2 */ + wa_mcr_write_or(wal, GEN11_SUBSLICE_UNIT_LEVEL_CLKGATE, + 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_14011037102:dg2_g10 */ + wa_write_or(wal, UNSLCGCTL9444, LTCDD_CLKGATE_DIS); + + /* Wa_14011371254:dg2_g10 */ + wa_mcr_write_or(wal, XEHP_SLICE_UNIT_LEVEL_CLKGATE, NODEDSS_CLKGATE_DIS); + + /* Wa_14011431319:dg2_g10 */ + wa_write_or(wal, UNSLCGCTL9440, GAMTLBOACS_CLKGATE_DIS | + GAMTLBVDBOX7_CLKGATE_DIS | + GAMTLBVDBOX6_CLKGATE_DIS | + GAMTLBVDBOX5_CLKGATE_DIS | + GAMTLBVDBOX4_CLKGATE_DIS | + GAMTLBVDBOX3_CLKGATE_DIS | + GAMTLBVDBOX2_CLKGATE_DIS | + GAMTLBVDBOX1_CLKGATE_DIS | + GAMTLBVDBOX0_CLKGATE_DIS | + GAMTLBKCR_CLKGATE_DIS | + GAMTLBGUC_CLKGATE_DIS | + GAMTLBBLT_CLKGATE_DIS); + wa_write_or(wal, UNSLCGCTL9444, GAMTLBGFXA0_CLKGATE_DIS | + GAMTLBGFXA1_CLKGATE_DIS | + GAMTLBCOMPA0_CLKGATE_DIS | + GAMTLBCOMPA1_CLKGATE_DIS | + GAMTLBCOMPB0_CLKGATE_DIS | + GAMTLBCOMPB1_CLKGATE_DIS | + GAMTLBCOMPC0_CLKGATE_DIS | + GAMTLBCOMPC1_CLKGATE_DIS | + GAMTLBCOMPD0_CLKGATE_DIS | + GAMTLBCOMPD1_CLKGATE_DIS | + GAMTLBMERT_CLKGATE_DIS | + GAMTLBVEBOX3_CLKGATE_DIS | + GAMTLBVEBOX2_CLKGATE_DIS | + GAMTLBVEBOX1_CLKGATE_DIS | + GAMTLBVEBOX0_CLKGATE_DIS); + + /* Wa_14010569222:dg2_g10 */ + wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE, + GAMEDIA_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_clr(wal, SARB_CHICKEN1, COMP_CKN_IN); + + /* Wa_14015795083 */ + 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); + + /* Wa_14010648519:dg2 */ + wa_mcr_write_or(wal, XEHP_L3NODEARBCFG, XEHP_LNESPARE); +} + +static void +pvc_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + pvc_init_mcr(gt, wal); + + /* Wa_14015795083 */ + 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_16016694945 */ + wa_mcr_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC); +} + +static void +xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + /* Wa_14018778641 / Wa_18018781329 */ + wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB); + + /* Wa_22016670082 */ + wa_write_or(wal, GEN12_SQCNT1, GEN12_STRICT_RAR_ENABLE); + + 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_14015795083 */ + wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE); + } + + /* + * Unlike older platforms, we no longer setup implicit steering here; + * all MCR accesses are explicitly steered. + */ + debug_dump_steering(gt); +} + +static void +xelpmp_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{ + /* + * Wa_14018778641 + * 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); + + debug_dump_steering(gt); +} + +/* + * The bspec performance guide has recommended MMIO tuning settings. These + * aren't truly "workarounds" but we want to program them through the + * workaround infrastructure to make sure they're (re)applied at the proper + * times. + * + * The programming in this function is for settings that persist through + * engine resets and also are not part of any engine's register state context. + * I.e., settings that only need to be re-applied in the event of a full GT + * reset. + */ +static void gt_tuning_settings(struct intel_gt *gt, struct i915_wa_list *wal) +{ + if (IS_METEORLAKE(gt->i915)) { + if (gt->type != GT_MEDIA) + wa_mcr_write_or(wal, XEHP_L3SCQREG7, BLEND_FILL_CACHING_OPT_DIS); + + wa_mcr_write_or(wal, XEHP_SQCM, EN_32B_ACCESS); + } + + if (IS_PONTEVECCHIO(gt->i915)) { + 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(gt->i915)) { + wa_mcr_write_or(wal, XEHP_L3SCQREG7, BLEND_FILL_CACHING_OPT_DIS); + wa_mcr_write_or(wal, XEHP_SQCM, EN_32B_ACCESS); + } +} + +static void +gt_init_workarounds(struct intel_gt *gt, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = gt->i915; + + gt_tuning_settings(gt, wal); + + if (gt->type == GT_MEDIA) { + if (MEDIA_VER(i915) >= 13) + xelpmp_gt_workarounds_init(gt, wal); + else + MISSING_CASE(MEDIA_VER(i915)); + + return; + } + + if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) + xelpg_gt_workarounds_init(gt, wal); + else if (IS_PONTEVECCHIO(i915)) + pvc_gt_workarounds_init(gt, wal); + else if (IS_DG2(i915)) + dg2_gt_workarounds_init(gt, wal); + else if (IS_XEHPSDV(i915)) + xehpsdv_gt_workarounds_init(gt, wal); + else if (IS_DG1(i915)) + dg1_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) == 12) + gen12_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) == 11) + icl_gt_workarounds_init(gt, wal); + else if (IS_COFFEELAKE(i915) || IS_COMETLAKE(i915)) + cfl_gt_workarounds_init(gt, wal); + else if (IS_GEMINILAKE(i915)) + glk_gt_workarounds_init(gt, wal); + else if (IS_KABYLAKE(i915)) + kbl_gt_workarounds_init(gt, wal); + else if (IS_BROXTON(i915)) + gen9_gt_workarounds_init(gt, wal); + else if (IS_SKYLAKE(i915)) + skl_gt_workarounds_init(gt, wal); + else if (IS_HASWELL(i915)) + hsw_gt_workarounds_init(gt, wal); + else if (IS_VALLEYVIEW(i915)) + vlv_gt_workarounds_init(gt, wal); + else if (IS_IVYBRIDGE(i915)) + ivb_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) == 6) + snb_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) == 5) + ilk_gt_workarounds_init(gt, wal); + else if (IS_G4X(i915)) + g4x_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) == 4) + gen4_gt_workarounds_init(gt, wal); + else if (GRAPHICS_VER(i915) <= 8) + ; + else + MISSING_CASE(GRAPHICS_VER(i915)); +} + +void intel_gt_init_workarounds(struct intel_gt *gt) +{ + struct i915_wa_list *wal = >->wa_list; + + wa_init_start(wal, gt, "GT", "global"); + gt_init_workarounds(gt, wal); + wa_init_finish(wal); +} + +static bool +wa_verify(struct intel_gt *gt, const struct i915_wa *wa, u32 cur, + const char *name, const char *from) +{ + if ((cur ^ wa->set) & wa->read) { + drm_err(>->i915->drm, + "%s workaround lost on %s! (reg[%x]=0x%x, relevant bits were 0x%x vs expected 0x%x)\n", + name, from, i915_mmio_reg_offset(wa->reg), + cur, cur & wa->read, wa->set & wa->read); + + return false; + } + + return true; +} + +static void wa_list_apply(const struct i915_wa_list *wal) +{ + struct intel_gt *gt = wal->gt; + struct intel_uncore *uncore = gt->uncore; + enum forcewake_domains fw; + unsigned long flags; + struct i915_wa *wa; + unsigned int i; + + if (!wal->count) + return; + + fw = wal_get_fw_for_rmw(uncore, wal); + + 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++) { + u32 val, old = 0; + + /* open-coded rmw due to steering */ + if (wa->clr) + old = wa->is_mcr ? + intel_gt_mcr_read_any_fw(gt, wa->mcr_reg) : + intel_uncore_read_fw(uncore, wa->reg); + val = (old & ~wa->clr) | wa->set; + if (val != old || !wa->clr) { + if (wa->is_mcr) + intel_gt_mcr_multicast_write_fw(gt, wa->mcr_reg, val); + else + intel_uncore_write_fw(uncore, wa->reg, val); + } + + if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) { + u32 val = wa->is_mcr ? + intel_gt_mcr_read_any_fw(gt, wa->mcr_reg) : + intel_uncore_read_fw(uncore, wa->reg); + + wa_verify(gt, wa, val, wal->name, "application"); + } + } + + intel_uncore_forcewake_put__locked(uncore, fw); + spin_unlock(&uncore->lock); + intel_gt_mcr_unlock(gt, flags); +} + +void intel_gt_apply_workarounds(struct intel_gt *gt) +{ + wa_list_apply(>->wa_list); +} + +static bool wa_list_verify(struct intel_gt *gt, + const struct i915_wa_list *wal, + const char *from) +{ + struct intel_uncore *uncore = gt->uncore; + struct i915_wa *wa; + enum forcewake_domains fw; + unsigned long flags; + unsigned int i; + bool ok = true; + + fw = wal_get_fw_for_rmw(uncore, wal); + + 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++) + ok &= wa_verify(wal->gt, wa, wa->is_mcr ? + intel_gt_mcr_read_any_fw(gt, wa->mcr_reg) : + intel_uncore_read_fw(uncore, wa->reg), + wal->name, from); + + intel_uncore_forcewake_put__locked(uncore, fw); + spin_unlock(&uncore->lock); + intel_gt_mcr_unlock(gt, flags); + + return ok; +} + +bool intel_gt_verify_workarounds(struct intel_gt *gt, const char *from) +{ + return wa_list_verify(gt, >->wa_list, from); +} + +__maybe_unused +static bool is_nonpriv_flags_valid(u32 flags) +{ + /* Check only valid flag bits are set */ + if (flags & ~RING_FORCE_TO_NONPRIV_MASK_VALID) + return false; + + /* NB: Only 3 out of 4 enum values are valid for access field */ + if ((flags & RING_FORCE_TO_NONPRIV_ACCESS_MASK) == + RING_FORCE_TO_NONPRIV_ACCESS_INVALID) + return false; + + return true; +} + +static void +whitelist_reg_ext(struct i915_wa_list *wal, i915_reg_t reg, u32 flags) +{ + struct i915_wa wa = { + .reg = reg + }; + + if (GEM_DEBUG_WARN_ON(wal->count >= RING_MAX_NONPRIV_SLOTS)) + return; + + if (GEM_DEBUG_WARN_ON(!is_nonpriv_flags_valid(flags))) + return; + + wa.reg.reg |= flags; + _wa_add(wal, &wa); +} + +static void +whitelist_mcr_reg_ext(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 flags) +{ + struct i915_wa wa = { + .mcr_reg = reg, + .is_mcr = 1, + }; + + if (GEM_DEBUG_WARN_ON(wal->count >= RING_MAX_NONPRIV_SLOTS)) + return; + + if (GEM_DEBUG_WARN_ON(!is_nonpriv_flags_valid(flags))) + return; + + wa.mcr_reg.reg |= flags; + _wa_add(wal, &wa); +} + +static void +whitelist_reg(struct i915_wa_list *wal, i915_reg_t reg) +{ + whitelist_reg_ext(wal, reg, RING_FORCE_TO_NONPRIV_ACCESS_RW); +} + +static void +whitelist_mcr_reg(struct i915_wa_list *wal, i915_mcr_reg_t reg) +{ + whitelist_mcr_reg_ext(wal, reg, RING_FORCE_TO_NONPRIV_ACCESS_RW); +} + +static void gen9_whitelist_build(struct i915_wa_list *w) +{ + /* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk,cfl */ + whitelist_reg(w, GEN9_CTX_PREEMPT_REG); + + /* WaEnablePreemptionGranularityControlByUMD:skl,bxt,kbl,cfl,[cnl] */ + whitelist_reg(w, GEN8_CS_CHICKEN1); + + /* WaAllowUMDToModifyHDCChicken1:skl,bxt,kbl,glk,cfl */ + whitelist_reg(w, GEN8_HDC_CHICKEN1); + + /* WaSendPushConstantsFromMMIO:skl,bxt */ + whitelist_reg(w, COMMON_SLICE_CHICKEN2); +} + +static void skl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + if (engine->class != RENDER_CLASS) + return; + + gen9_whitelist_build(w); + + /* WaDisableLSQCROPERFforOCL:skl */ + whitelist_mcr_reg(w, GEN8_L3SQCREG4); +} + +static void bxt_whitelist_build(struct intel_engine_cs *engine) +{ + if (engine->class != RENDER_CLASS) + return; + + gen9_whitelist_build(&engine->whitelist); +} + +static void kbl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + if (engine->class != RENDER_CLASS) + return; + + gen9_whitelist_build(w); + + /* WaDisableLSQCROPERFforOCL:kbl */ + whitelist_mcr_reg(w, GEN8_L3SQCREG4); +} + +static void glk_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + if (engine->class != RENDER_CLASS) + return; + + gen9_whitelist_build(w); + + /* WA #0862: Userspace has to set "Barrier Mode" to avoid hangs. */ + whitelist_reg(w, GEN9_SLICE_COMMON_ECO_CHICKEN1); +} + +static void cfl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + if (engine->class != RENDER_CLASS) + return; + + gen9_whitelist_build(w); + + /* + * WaAllowPMDepthAndInvocationCountAccessFromUMD:cfl,whl,cml,aml + * + * This covers 4 register which are next to one another : + * - PS_INVOCATION_COUNT + * - PS_INVOCATION_COUNT_UDW + * - PS_DEPTH_COUNT + * - PS_DEPTH_COUNT_UDW + */ + whitelist_reg_ext(w, PS_INVOCATION_COUNT, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); +} + +static void allow_read_ctx_timestamp(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + if (engine->class != RENDER_CLASS) + whitelist_reg_ext(w, + RING_CTX_TIMESTAMP(engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); +} + +static void cml_whitelist_build(struct intel_engine_cs *engine) +{ + allow_read_ctx_timestamp(engine); + + cfl_whitelist_build(engine); +} + +static void icl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + allow_read_ctx_timestamp(engine); + + switch (engine->class) { + case RENDER_CLASS: + /* WaAllowUMDToModifyHalfSliceChicken7:icl */ + whitelist_mcr_reg(w, GEN9_HALF_SLICE_CHICKEN7); + + /* WaAllowUMDToModifySamplerMode:icl */ + whitelist_mcr_reg(w, GEN10_SAMPLER_MODE); + + /* WaEnableStateCacheRedirectToCS:icl */ + whitelist_reg(w, GEN9_SLICE_COMMON_ECO_CHICKEN1); + + /* + * WaAllowPMDepthAndInvocationCountAccessFromUMD:icl + * + * This covers 4 register which are next to one another : + * - PS_INVOCATION_COUNT + * - PS_INVOCATION_COUNT_UDW + * - PS_DEPTH_COUNT + * - PS_DEPTH_COUNT_UDW + */ + whitelist_reg_ext(w, PS_INVOCATION_COUNT, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); + break; + + case VIDEO_DECODE_CLASS: + /* hucStatusRegOffset */ + whitelist_reg_ext(w, _MMIO(0x2000 + engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); + /* hucUKernelHdrInfoRegOffset */ + whitelist_reg_ext(w, _MMIO(0x2014 + engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); + /* hucStatus2RegOffset */ + whitelist_reg_ext(w, _MMIO(0x23B0 + engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); + break; + + default: + break; + } +} + +static void tgl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + allow_read_ctx_timestamp(engine); + + switch (engine->class) { + case RENDER_CLASS: + /* + * WaAllowPMDepthAndInvocationCountAccessFromUMD:tgl + * Wa_1408556865:tgl + * + * This covers 4 registers which are next to one another : + * - PS_INVOCATION_COUNT + * - PS_INVOCATION_COUNT_UDW + * - PS_DEPTH_COUNT + * - PS_DEPTH_COUNT_UDW + */ + whitelist_reg_ext(w, PS_INVOCATION_COUNT, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); + + /* + * Wa_1808121037:tgl + * Wa_14012131227:dg1 + * Wa_1508744258:tgl,rkl,dg1,adl-s,adl-p + */ + whitelist_reg(w, GEN7_COMMON_SLICE_CHICKEN1); + + /* Wa_1806527549:tgl */ + whitelist_reg(w, HIZ_CHICKEN); + + /* Required by recommended tuning setting (not a workaround) */ + whitelist_reg(w, GEN11_COMMON_SLICE_CHICKEN3); + + break; + default: + break; + } +} + +static void dg2_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + switch (engine->class) { + case RENDER_CLASS: + /* + * Wa_1507100340:dg2_g10 + * + * This covers 4 registers which are next to one another : + * - PS_INVOCATION_COUNT + * - PS_INVOCATION_COUNT_UDW + * - PS_DEPTH_COUNT + * - PS_DEPTH_COUNT_UDW + */ + if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0)) + whitelist_reg_ext(w, PS_INVOCATION_COUNT, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); + + /* Required by recommended tuning setting (not a workaround) */ + whitelist_mcr_reg(w, XEHP_COMMON_SLICE_CHICKEN3); + + break; + case COMPUTE_CLASS: + /* Wa_16011157294:dg2_g10 */ + if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0)) + whitelist_reg(w, GEN9_CTX_PREEMPT_REG); + break; + default: + break; + } +} + +static void blacklist_trtt(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + /* + * Prevent read/write access to [0x4400, 0x4600) which covers + * the TRTT range across all engines. Note that normally userspace + * cannot access the other engines' trtt control, but for simplicity + * we cover the entire range on each engine. + */ + whitelist_reg_ext(w, _MMIO(0x4400), + RING_FORCE_TO_NONPRIV_DENY | + RING_FORCE_TO_NONPRIV_RANGE_64); + whitelist_reg_ext(w, _MMIO(0x4500), + RING_FORCE_TO_NONPRIV_DENY | + RING_FORCE_TO_NONPRIV_RANGE_64); +} + +static void pvc_whitelist_build(struct intel_engine_cs *engine) +{ + /* Wa_16014440446:pvc */ + blacklist_trtt(engine); +} + +static void mtl_whitelist_build(struct intel_engine_cs *engine) +{ + struct i915_wa_list *w = &engine->whitelist; + + switch (engine->class) { + case RENDER_CLASS: + /* Required by recommended tuning setting (not a workaround) */ + whitelist_mcr_reg(w, XEHP_COMMON_SLICE_CHICKEN3); + + break; + default: + break; + } +} + +void intel_engine_init_whitelist(struct intel_engine_cs *engine) +{ + struct drm_i915_private *i915 = engine->i915; + struct i915_wa_list *w = &engine->whitelist; + + wa_init_start(w, engine->gt, "whitelist", engine->name); + + if (IS_METEORLAKE(i915)) + mtl_whitelist_build(engine); + else if (IS_PONTEVECCHIO(i915)) + pvc_whitelist_build(engine); + else if (IS_DG2(i915)) + dg2_whitelist_build(engine); + else if (IS_XEHPSDV(i915)) + ; /* none needed */ + else if (GRAPHICS_VER(i915) == 12) + tgl_whitelist_build(engine); + else if (GRAPHICS_VER(i915) == 11) + icl_whitelist_build(engine); + else if (IS_COMETLAKE(i915)) + cml_whitelist_build(engine); + else if (IS_COFFEELAKE(i915)) + cfl_whitelist_build(engine); + else if (IS_GEMINILAKE(i915)) + glk_whitelist_build(engine); + else if (IS_KABYLAKE(i915)) + kbl_whitelist_build(engine); + else if (IS_BROXTON(i915)) + bxt_whitelist_build(engine); + else if (IS_SKYLAKE(i915)) + skl_whitelist_build(engine); + else if (GRAPHICS_VER(i915) <= 8) + ; + else + MISSING_CASE(GRAPHICS_VER(i915)); + + wa_init_finish(w); +} + +void intel_engine_apply_whitelist(struct intel_engine_cs *engine) +{ + const struct i915_wa_list *wal = &engine->whitelist; + struct intel_uncore *uncore = engine->uncore; + const u32 base = engine->mmio_base; + struct i915_wa *wa; + unsigned int i; + + if (!wal->count) + return; + + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) + intel_uncore_write(uncore, + RING_FORCE_TO_NONPRIV(base, i), + i915_mmio_reg_offset(wa->reg)); + + /* And clear the rest just in case of garbage */ + for (; i < RING_MAX_NONPRIV_SLOTS; i++) + intel_uncore_write(uncore, + RING_FORCE_TO_NONPRIV(base, i), + i915_mmio_reg_offset(RING_NOPID(base))); +} + +/* + * engine_fake_wa_init(), a place holder to program the registers + * which are not part of an official workaround defined by the + * hardware team. + * Adding programming of those register inside workaround will + * allow utilizing wa framework to proper application and verification. + */ +static void +engine_fake_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) +{ + u8 mocs_w, mocs_r; + + /* + * RING_CMD_CCTL specifies the default MOCS entry that will be used + * by the command streamer when executing commands that don't have + * a way to explicitly specify a MOCS setting. The default should + * usually reference whichever MOCS entry corresponds to uncached + * behavior, although use of a WB cached entry is recommended by the + * spec in certain circumstances on specific platforms. + */ + if (GRAPHICS_VER(engine->i915) >= 12) { + mocs_r = engine->gt->mocs.uc_index; + mocs_w = engine->gt->mocs.uc_index; + + if (HAS_L3_CCS_READ(engine->i915) && + engine->class == COMPUTE_CLASS) { + mocs_r = engine->gt->mocs.wb_index; + + /* + * Even on the few platforms where MOCS 0 is a + * legitimate table entry, it's never the correct + * setting to use here; we can assume the MOCS init + * just forgot to initialize wb_index. + */ + drm_WARN_ON(&engine->i915->drm, mocs_r == 0); + } + + wa_masked_field_set(wal, + RING_CMD_CCTL(engine->mmio_base), + CMD_CCTL_MOCS_MASK, + CMD_CCTL_MOCS_OVERRIDE(mocs_w, mocs_r)); + } +} + +static bool needs_wa_1308578152(struct intel_engine_cs *engine) +{ + return intel_sseu_find_first_xehp_dss(&engine->gt->info.sseu, 0, 0) >= + GEN_DSS_PER_GSLICE; +} + +static void +rcs_engine_wa_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_22014600077 */ + wa_mcr_masked_en(wal, GEN10_CACHE_MODE_SS, + ENABLE_EU_COUNT_FOR_TDL_FLUSH); + } + + 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 */ + 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 */ + wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, + GEN12_DISABLE_HDR_PAST_PAYLOAD_HOLD_FIX); + } + + /* 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)) { + wa_masked_dis(wal, GEN12_CS_DEBUG_MODE1_CCCSUNIT_BE_COMMON, + GEN12_REPLAY_MODE_GRANULARITY); + } + + if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) || + IS_DG2_G11(i915) || IS_DG2_G12(i915)) { + /* + * Wa_22010960976:dg2 + * Wa_14013347512:dg2 + */ + wa_mcr_masked_dis(wal, XEHP_HDC_CHICKEN0, + LSC_L1_FLUSH_CTL_3D_DATAPORT_FLUSH_EVENTS_MASK); + } + + if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) { + /* + * Wa_1608949956:dg2_g10 + * Wa_14010198302:dg2_g10 + */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN, + MDQ_ARBITRATION_MODE | UGM_BACKUP_MODE); + } + + if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) + /* Wa_22010430635:dg2 */ + wa_mcr_masked_en(wal, + GEN9_ROW_CHICKEN4, + GEN12_DISABLE_GRF_CLEAR); + + /* Wa_14013202645:dg2 */ + if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_C0) || + IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) + wa_mcr_write_or(wal, RT_CTRL, DIS_NULL_QUERY); + + /* Wa_22012532006:dg2 */ + if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_C0) || + IS_DG2_GRAPHICS_STEP(engine->i915, G11, 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(i915, G11, STEP_B0, STEP_FOREVER) || + IS_DG2_G10(i915)) { + /* Wa_22014600077:dg2 */ + wa_mcr_add(wal, GEN10_CACHE_MODE_SS, 0, + _MASKED_BIT_ENABLE(ENABLE_EU_COUNT_FOR_TDL_FLUSH), + 0 /* Wa_14012342262 write-only reg, so skip verification */, + true); + } + + if (IS_ALDERLAKE_P(i915) || IS_ALDERLAKE_S(i915) || IS_DG1(i915) || + IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) { + /* Wa_1606931601:tgl,rkl,dg1,adl-s,adl-p */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, GEN12_DISABLE_EARLY_READ); + + /* + * Wa_1407928979:tgl A* + * Wa_18011464164:tgl[B0+],dg1[B0+] + * Wa_22010931296:tgl[B0+],dg1[B0+] + * Wa_14010919138:rkl,dg1,adl-s,adl-p + */ + wa_write_or(wal, GEN7_FF_THREAD_MODE, + GEN12_FF_TESSELATION_DOP_GATE_DISABLE); + } + + if (IS_ALDERLAKE_P(i915) || IS_DG2(i915) || IS_ALDERLAKE_S(i915) || + IS_DG1(i915) || IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) { + /* + * Wa_1606700617:tgl,dg1,adl-p + * Wa_22010271021:tgl,rkl,dg1,adl-s,adl-p + * Wa_14010826681:tgl,dg1,rkl,adl-p + * Wa_18019627453:dg2 + */ + wa_masked_en(wal, + GEN9_CS_DEBUG_MODE1, + FF_DOP_CLOCK_GATE_DISABLE); + } + + if (IS_ALDERLAKE_P(i915) || IS_ALDERLAKE_S(i915) || + IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) { + /* Wa_1409804808 */ + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, + GEN12_PUSH_CONST_DEREF_HOLD_DIS); + + /* Wa_14010229206 */ + wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, GEN12_DISABLE_TDL_PUSH); + } + + if (IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915) || IS_ALDERLAKE_P(i915)) { + /* + * Wa_1607297627 + * + * On TGL and RKL there are multiple entries for this WA in the + * BSpec; some indicate this is an A0-only WA, others indicate + * it applies to all steppings so we trust the "all steppings." + */ + wa_masked_en(wal, + RING_PSMI_CTL(RENDER_RING_BASE), + GEN12_WAIT_FOR_EVENT_POWER_DOWN_DISABLE | + GEN8_RC_SEMA_IDLE_MSG_DISABLE); + } + + if (IS_DG1(i915) || IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915) || + IS_ALDERLAKE_S(i915) || IS_ALDERLAKE_P(i915)) { + /* Wa_1406941453:tgl,rkl,dg1,adl-s,adl-p */ + wa_mcr_masked_en(wal, + GEN10_SAMPLER_MODE, + ENABLE_SMALLPL); + } + + if (GRAPHICS_VER(i915) == 11) { + /* This is not an Wa. Enable for better image quality */ + wa_masked_en(wal, + _3D_CHICKEN3, + _3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE); + + /* + * Wa_1405543622:icl + * Formerly known as WaGAPZPriorityScheme + */ + wa_write_or(wal, + GEN8_GARBCNTL, + GEN11_ARBITRATION_PRIO_ORDER_MASK); + + /* + * Wa_1604223664:icl + * Formerly known as WaL3BankAddressHashing + */ + wa_write_clr_set(wal, + GEN8_GARBCNTL, + GEN11_HASH_CTRL_EXCL_MASK, + GEN11_HASH_CTRL_EXCL_BIT0); + wa_write_clr_set(wal, + GEN11_GLBLINVL, + GEN11_BANK_HASH_ADDR_EXCL_MASK, + GEN11_BANK_HASH_ADDR_EXCL_BIT0); + + /* + * Wa_1405733216:icl + * Formerly known as WaDisableCleanEvicts + */ + wa_mcr_write_or(wal, + GEN8_L3SQCREG4, + GEN11_LQSC_CLEAN_EVICT_DISABLE); + + /* Wa_1606682166:icl */ + wa_write_or(wal, + GEN7_SARCHKMD, + GEN7_DISABLE_SAMPLER_PREFETCH); + + /* Wa_1409178092:icl */ + wa_mcr_write_clr_set(wal, + GEN11_SCRATCH2, + GEN11_COHERENT_PARTIAL_WRITE_MERGE_ENABLE, + 0); + + /* WaEnable32PlaneMode:icl */ + wa_masked_en(wal, GEN9_CSFE_CHICKEN1_RCS, + GEN11_ENABLE_32_PLANE_MODE); + + /* + * Wa_1408767742:icl[a2..forever],ehl[all] + * Wa_1605460711:icl[a0..c0] + */ + wa_write_or(wal, + GEN7_FF_THREAD_MODE, + GEN12_FF_TESSELATION_DOP_GATE_DISABLE); + + /* Wa_22010271021 */ + wa_masked_en(wal, + GEN9_CS_DEBUG_MODE1, + FF_DOP_CLOCK_GATE_DISABLE); + } + + /* + * Intel platforms that support fine-grained preemption (i.e., gen9 and + * beyond) allow the kernel-mode driver to choose between two different + * options for controlling preemption granularity and behavior. + * + * Option 1 (hardware default): + * Preemption settings are controlled in a global manner via + * kernel-only register CS_DEBUG_MODE1 (0x20EC). Any granularity + * and settings chosen by the kernel-mode driver will apply to all + * userspace clients. + * + * Option 2: + * Preemption settings are controlled on a per-context basis via + * register CS_CHICKEN1 (0x2580). CS_CHICKEN1 is saved/restored on + * context switch and is writable by userspace (e.g., via + * MI_LOAD_REGISTER_IMMEDIATE instructions placed in a batch buffer) + * which allows different userspace drivers/clients to select + * different settings, or to change those settings on the fly in + * response to runtime needs. This option was known by name + * "FtrPerCtxtPreemptionGranularityControl" at one time, although + * that name is somewhat misleading as other non-granularity + * preemption settings are also impacted by this decision. + * + * On Linux, our policy has always been to let userspace drivers + * control preemption granularity/settings (Option 2). This was + * originally mandatory on gen9 to prevent ABI breakage (old gen9 + * userspace developed before object-level preemption was enabled would + * not behave well if i915 were to go with Option 1 and enable that + * preemption in a global manner). On gen9 each context would have + * object-level preemption disabled by default (see + * WaDisable3DMidCmdPreemption in gen9_ctx_workarounds_init), but + * userspace drivers could opt-in to object-level preemption as they + * saw fit. For post-gen9 platforms, we continue to utilize Option 2; + * even though it is no longer necessary for ABI compatibility when + * enabling a new platform, it does ensure that userspace will be able + * to implement any workarounds that show up requiring temporary + * adjustments to preemption behavior at runtime. + * + * Notes/Workarounds: + * - Wa_14015141709: On DG2 and early steppings of MTL, + * CS_CHICKEN1[0] does not disable object-level preemption as + * it is supposed to (nor does CS_DEBUG_MODE1[0] if we had been + * using Option 1). Effectively this means userspace is unable + * to disable object-level preemption on these platforms/steppings + * despite the setting here. + * + * - Wa_16013994831: May require that userspace program + * CS_CHICKEN1[10] when certain runtime conditions are true. + * Userspace requires Option 2 to be in effect for their update of + * CS_CHICKEN1[10] to be effective. + * + * Other workarounds may appear in the future that will also require + * Option 2 behavior to allow proper userspace implementation. + */ + if (GRAPHICS_VER(i915) >= 9) + wa_masked_en(wal, + GEN7_FF_SLICE_CS_CHICKEN1, + GEN9_FFSC_PERCTX_PREEMPT_CTRL); + + if (IS_SKYLAKE(i915) || + IS_KABYLAKE(i915) || + IS_COFFEELAKE(i915) || + IS_COMETLAKE(i915)) { + /* WaEnableGapsTsvCreditFix:skl,kbl,cfl */ + wa_write_or(wal, + GEN8_GARBCNTL, + GEN9_GAPS_TSV_CREDIT_DISABLE); + } + + if (IS_BROXTON(i915)) { + /* WaDisablePooledEuLoadBalancingFix:bxt */ + wa_masked_en(wal, + FF_SLICE_CS_CHICKEN2, + GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE); + } + + if (GRAPHICS_VER(i915) == 9) { + /* WaContextSwitchWithConcurrentTLBInvalidate:skl,bxt,kbl,glk,cfl */ + wa_masked_en(wal, + GEN9_CSFE_CHICKEN1_RCS, + GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE); + + /* WaEnableLbsSlaRetryTimerDecrement:skl,bxt,kbl,glk,cfl */ + wa_mcr_write_or(wal, + BDW_SCRATCH1, + GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE); + + /* WaProgramL3SqcReg1DefaultForPerf:bxt,glk */ + if (IS_GEN9_LP(i915)) + wa_mcr_write_clr_set(wal, + GEN8_L3SQCREG1, + L3_PRIO_CREDITS_MASK, + L3_GENERAL_PRIO_CREDITS(62) | + L3_HIGH_PRIO_CREDITS(2)); + + /* WaOCLCoherentLineFlush:skl,bxt,kbl,cfl */ + wa_mcr_write_or(wal, + GEN8_L3SQCREG4, + GEN8_LQSC_FLUSH_COHERENT_LINES); + + /* Disable atomics in L3 to prevent unrecoverable hangs */ + wa_write_clr_set(wal, GEN9_SCRATCH_LNCF1, + GEN9_LNCF_NONIA_COHERENT_ATOMICS_ENABLE, 0); + wa_mcr_write_clr_set(wal, GEN8_L3SQCREG4, + GEN8_LQSQ_NONIA_COHERENT_ATOMICS_ENABLE, 0); + wa_mcr_write_clr_set(wal, GEN9_SCRATCH1, + EVICTION_PERF_FIX_ENABLE, 0); + } + + if (IS_HASWELL(i915)) { + /* WaSampleCChickenBitEnable:hsw */ + wa_masked_en(wal, + HSW_HALF_SLICE_CHICKEN3, HSW_SAMPLE_C_PERFORMANCE); + + wa_masked_dis(wal, + CACHE_MODE_0_GEN7, + /* enable HiZ Raw Stall Optimization */ + HIZ_RAW_STALL_OPT_DISABLE); + } + + if (IS_VALLEYVIEW(i915)) { + /* WaDisableEarlyCull:vlv */ + wa_masked_en(wal, + _3D_CHICKEN3, + _3D_CHICKEN_SF_DISABLE_OBJEND_CULL); + + /* + * WaVSThreadDispatchOverride:ivb,vlv + * + * This actually overrides the dispatch + * mode for all thread types. + */ + wa_write_clr_set(wal, + GEN7_FF_THREAD_MODE, + GEN7_FF_SCHED_MASK, + GEN7_FF_TS_SCHED_HW | + GEN7_FF_VS_SCHED_HW | + GEN7_FF_DS_SCHED_HW); + + /* WaPsdDispatchEnable:vlv */ + /* WaDisablePSDDualDispatchEnable:vlv */ + wa_masked_en(wal, + GEN7_HALF_SLICE_CHICKEN1, + GEN7_MAX_PS_THREAD_DEP | + GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE); + } + + if (IS_IVYBRIDGE(i915)) { + /* WaDisableEarlyCull:ivb */ + wa_masked_en(wal, + _3D_CHICKEN3, + _3D_CHICKEN_SF_DISABLE_OBJEND_CULL); + + if (0) { /* causes HiZ corruption on ivb:gt1 */ + /* enable HiZ Raw Stall Optimization */ + wa_masked_dis(wal, + CACHE_MODE_0_GEN7, + HIZ_RAW_STALL_OPT_DISABLE); + } + + /* + * WaVSThreadDispatchOverride:ivb,vlv + * + * This actually overrides the dispatch + * mode for all thread types. + */ + wa_write_clr_set(wal, + GEN7_FF_THREAD_MODE, + GEN7_FF_SCHED_MASK, + GEN7_FF_TS_SCHED_HW | + GEN7_FF_VS_SCHED_HW | + GEN7_FF_DS_SCHED_HW); + + /* WaDisablePSDDualDispatchEnable:ivb */ + if (IS_IVB_GT1(i915)) + wa_masked_en(wal, + GEN7_HALF_SLICE_CHICKEN1, + GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE); + } + + if (GRAPHICS_VER(i915) == 7) { + /* WaBCSVCSTlbInvalidationMode:ivb,vlv,hsw */ + wa_masked_en(wal, + RING_MODE_GEN7(RENDER_RING_BASE), + GFX_TLB_INVALIDATE_EXPLICIT | GFX_REPLAY_MODE); + + /* WaDisable_RenderCache_OperationalFlush:ivb,vlv,hsw */ + wa_masked_dis(wal, CACHE_MODE_0_GEN7, RC_OP_FLUSH_ENABLE); + + /* + * BSpec says this must be set, even though + * WaDisable4x2SubspanOptimization:ivb,hsw + * WaDisable4x2SubspanOptimization isn't listed for VLV. + */ + wa_masked_en(wal, + CACHE_MODE_1, + PIXEL_SUBSPAN_COLLECT_OPT_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_masked_field_set(wal, + GEN7_GT_MODE, + GEN6_WIZ_HASHING_MASK, + GEN6_WIZ_HASHING_16x4); + } + + if (IS_GRAPHICS_VER(i915, 6, 7)) + /* + * We need to disable the AsyncFlip performance optimisations in + * order to use MI_WAIT_FOR_EVENT within the CS. It should + * already be programmed to '1' on all products. + * + * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv + */ + wa_masked_en(wal, + RING_MI_MODE(RENDER_RING_BASE), + ASYNC_FLIP_PERF_DISABLE); + + if (GRAPHICS_VER(i915) == 6) { + /* + * Required for the hardware to program scanline values for + * waiting + * WaEnableFlushTlbInvalidationMode:snb + */ + wa_masked_en(wal, + GFX_MODE, + GFX_TLB_INVALIDATE_EXPLICIT); + + /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ + wa_masked_en(wal, + _3D_CHICKEN, + _3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB); + + wa_masked_en(wal, + _3D_CHICKEN3, + /* WaStripsFansDisableFastClipPerformanceFix:snb */ + _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL | + /* + * Bspec says: + * "This bit must be set if 3DSTATE_CLIP clip mode is set + * to normal and 3DSTATE_SF number of SF output attributes + * is more than 16." + */ + _3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH); + + /* + * 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_masked_field_set(wal, + GEN6_GT_MODE, + GEN6_WIZ_HASHING_MASK, + GEN6_WIZ_HASHING_16x4); + + /* WaDisable_RenderCache_OperationalFlush:snb */ + wa_masked_dis(wal, CACHE_MODE_0, RC_OP_FLUSH_ENABLE); + + /* + * From the Sandybridge PRM, volume 1 part 3, page 24: + * "If this bit is set, STCunit will have LRA as replacement + * policy. [...] This bit must be reset. LRA replacement + * policy is not supported." + */ + wa_masked_dis(wal, + CACHE_MODE_0, + CM0_STC_EVICT_DISABLE_LRA_SNB); + } + + if (IS_GRAPHICS_VER(i915, 4, 6)) + /* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */ + wa_add(wal, RING_MI_MODE(RENDER_RING_BASE), + 0, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH), + /* XXX bit doesn't stick on Broadwater */ + IS_I965G(i915) ? 0 : VS_TIMER_DISPATCH, true); + + if (GRAPHICS_VER(i915) == 4) + /* + * Disable CONSTANT_BUFFER before it is loaded from the context + * image. For as it is loaded, it is executed and the stored + * address may no longer be valid, leading to a GPU hang. + * + * This imposes the requirement that userspace reload their + * CONSTANT_BUFFER on every batch, fortunately a requirement + * they are already accustomed to from before contexts were + * enabled. + */ + wa_add(wal, ECOSKPD(RENDER_RING_BASE), + 0, _MASKED_BIT_ENABLE(ECO_CONSTANT_BUFFER_SR_DISABLE), + 0 /* XXX bit doesn't stick on Broadwater */, + true); +} + +static void +xcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + /* WaKBLVECSSemaphoreWaitPoll:kbl */ + if (IS_KABYLAKE(i915) && IS_GRAPHICS_STEP(i915, STEP_A0, STEP_F0)) { + wa_write(wal, + RING_SEMA_WAIT_POLL(engine->mmio_base), + 1); + } +} + +static void +ccs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) +{ + if (IS_PVC_CT_STEP(engine->i915, STEP_A0, STEP_C0)) { + /* Wa_14014999345:pvc */ + wa_mcr_masked_en(wal, GEN10_CACHE_MODE_SS, DISABLE_ECC); + } +} + +/* + * The bspec performance guide has recommended MMIO tuning settings. These + * aren't truly "workarounds" but we want to program them with the same + * workaround infrastructure to ensure that they're automatically added to + * the GuC save/restore lists, re-applied at the right times, and checked for + * any conflicting programming requested by real workarounds. + * + * Programming settings should be added here only if their registers are not + * part of an engine's register state context. If a register is part of a + * context, then any tuning settings should be programmed in an appropriate + * function invoked by __intel_engine_init_ctx_wa(). + */ +static void +add_render_compute_tuning_settings(struct drm_i915_private *i915, + struct i915_wa_list *wal) +{ + if (IS_METEORLAKE(i915) || IS_DG2(i915)) + wa_mcr_write_clr_set(wal, RT_CTRL, STACKID_CTRL, STACKID_CTRL_512); + + /* + * This tuning setting proves beneficial only on ATS-M designs; the + * default "age based" setting is optimal on regular DG2 and other + * platforms. + */ + 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); +} + +/* + * The workarounds in this function apply to shared registers in + * the general render reset domain that aren't tied to a + * specific engine. Since all render+compute engines get reset + * together, and the contents of these registers are lost during + * the shared render domain reset, we'll define such workarounds + * here and then add them to just a single RCS or CCS engine's + * workaround list (whichever engine has the XXXX flag). + */ +static void +general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) +{ + struct drm_i915_private *i915 = engine->i915; + + add_render_compute_tuning_settings(i915, wal); + + if (GRAPHICS_VER(i915) >= 11) { + /* This is not a Wa (although referred to as + * WaSetInidrectStateOverride in places), this allows + * applications that reference sampler states through + * the BindlessSamplerStateBaseAddress to have their + * border color relative to DynamicStateBaseAddress + * rather than BindlessSamplerStateBaseAddress. + * + * Otherwise SAMPLER_STATE border colors have to be + * copied in multiple heaps (DynamicStateBaseAddress & + * BindlessSamplerStateBaseAddress) + * + * BSpec: 46052 + */ + wa_mcr_masked_en(wal, + GEN10_SAMPLER_MODE, + GEN11_INDIRECT_STATE_BASE_ADDR_OVERRIDE); + } + + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_B0, STEP_FOREVER) || + IS_MTL_GRAPHICS_STEP(i915, P, STEP_B0, STEP_FOREVER)) + /* Wa_14017856879 */ + wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN3, MTL_DISABLE_FIX_FOR_EOT_FLUSH); + + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) || + IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0)) + /* + * Wa_14017066071 + * Wa_14017654203 + */ + wa_mcr_masked_en(wal, GEN10_SAMPLER_MODE, + MTL_DISABLE_SAMPLER_SC_OOO); + + if (IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0)) + /* Wa_22015279794 */ + wa_mcr_masked_en(wal, GEN10_CACHE_MODE_SS, + DISABLE_PREFETCH_INTO_IC); + + 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_XEHPSDV(i915)) { + /* Wa_1409954639 */ + wa_mcr_masked_en(wal, + GEN8_ROW_CHICKEN, + SYSTOLIC_DOP_CLOCK_GATING_DIS); + + /* Wa_1607196519 */ + wa_mcr_masked_en(wal, + GEN9_ROW_CHICKEN4, + GEN12_DISABLE_GRF_CLEAR); + + /* Wa_14010449647:xehpsdv */ + wa_mcr_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1, + GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE); + } + + if (IS_DG2(i915) || IS_PONTEVECCHIO(i915)) { + /* Wa_14015227452:dg2,pvc */ + wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, XEHP_DIS_BBL_SYSPIPE); + + /* Wa_16015675438:dg2,pvc */ + wa_masked_en(wal, FF_SLICE_CS_CHICKEN2, GEN12_PERF_FIX_BALANCING_CFE_DISABLE); + } + + if (IS_DG2(i915)) { + /* + * Wa_16011620976:dg2_g11 + * Wa_22015475538:dg2 + */ + wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW, DIS_CHAIN_2XSIMD8); + } + + 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 +engine_init_workarounds(struct intel_engine_cs *engine, struct i915_wa_list *wal) +{ + if (GRAPHICS_VER(engine->i915) < 4) + return; + + engine_fake_wa_init(engine, wal); + + /* + * These are common workarounds that just need to applied + * to a single RCS/CCS engine's workaround list since + * they're reset as part of the general render domain reset. + */ + if (engine->flags & I915_ENGINE_FIRST_RENDER_COMPUTE) + general_render_compute_wa_init(engine, wal); + + if (engine->class == COMPUTE_CLASS) + ccs_engine_wa_init(engine, wal); + else if (engine->class == RENDER_CLASS) + rcs_engine_wa_init(engine, wal); + else + xcs_engine_wa_init(engine, wal); +} + +void intel_engine_init_workarounds(struct intel_engine_cs *engine) +{ + struct i915_wa_list *wal = &engine->wa_list; + + wa_init_start(wal, engine->gt, "engine", engine->name); + engine_init_workarounds(engine, wal); + wa_init_finish(wal); +} + +void intel_engine_apply_workarounds(struct intel_engine_cs *engine) +{ + wa_list_apply(&engine->wa_list); +} + +static const struct i915_range mcr_ranges_gen8[] = { + { .start = 0x5500, .end = 0x55ff }, + { .start = 0x7000, .end = 0x7fff }, + { .start = 0x9400, .end = 0x97ff }, + { .start = 0xb000, .end = 0xb3ff }, + { .start = 0xe000, .end = 0xe7ff }, + {}, +}; + +static const struct i915_range mcr_ranges_gen12[] = { + { .start = 0x8150, .end = 0x815f }, + { .start = 0x9520, .end = 0x955f }, + { .start = 0xb100, .end = 0xb3ff }, + { .start = 0xde80, .end = 0xe8ff }, + { .start = 0x24a00, .end = 0x24a7f }, + {}, +}; + +static const struct i915_range mcr_ranges_xehp[] = { + { .start = 0x4000, .end = 0x4aff }, + { .start = 0x5200, .end = 0x52ff }, + { .start = 0x5400, .end = 0x7fff }, + { .start = 0x8140, .end = 0x815f }, + { .start = 0x8c80, .end = 0x8dff }, + { .start = 0x94d0, .end = 0x955f }, + { .start = 0x9680, .end = 0x96ff }, + { .start = 0xb000, .end = 0xb3ff }, + { .start = 0xc800, .end = 0xcfff }, + { .start = 0xd800, .end = 0xd8ff }, + { .start = 0xdc00, .end = 0xffff }, + { .start = 0x17000, .end = 0x17fff }, + { .start = 0x24a00, .end = 0x24a7f }, + {}, +}; + +static bool mcr_range(struct drm_i915_private *i915, u32 offset) +{ + const struct i915_range *mcr_ranges; + int i; + + if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) + mcr_ranges = mcr_ranges_xehp; + else if (GRAPHICS_VER(i915) >= 12) + mcr_ranges = mcr_ranges_gen12; + else if (GRAPHICS_VER(i915) >= 8) + mcr_ranges = mcr_ranges_gen8; + else + return false; + + /* + * Registers in these ranges are affected by the MCR selector + * which only controls CPU initiated MMIO. Routing does not + * work for CS access so we cannot verify them on this path. + */ + for (i = 0; mcr_ranges[i].start; i++) + if (offset >= mcr_ranges[i].start && + offset <= mcr_ranges[i].end) + return true; + + return false; +} + +static int +wa_list_srm(struct i915_request *rq, + const struct i915_wa_list *wal, + struct i915_vma *vma) +{ + struct drm_i915_private *i915 = rq->i915; + unsigned int i, count = 0; + const struct i915_wa *wa; + u32 srm, *cs; + + srm = MI_STORE_REGISTER_MEM | MI_SRM_LRM_GLOBAL_GTT; + if (GRAPHICS_VER(i915) >= 8) + srm++; + + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + if (!mcr_range(i915, i915_mmio_reg_offset(wa->reg))) + count++; + } + + cs = intel_ring_begin(rq, 4 * count); + if (IS_ERR(cs)) + return PTR_ERR(cs); + + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + u32 offset = i915_mmio_reg_offset(wa->reg); + + if (mcr_range(i915, offset)) + continue; + + *cs++ = srm; + *cs++ = offset; + *cs++ = i915_ggtt_offset(vma) + sizeof(u32) * i; + *cs++ = 0; + } + intel_ring_advance(rq, cs); + + return 0; +} + +static int engine_wa_list_verify(struct intel_context *ce, + const struct i915_wa_list * const wal, + const char *from) +{ + const struct i915_wa *wa; + struct i915_request *rq; + struct i915_vma *vma; + struct i915_gem_ww_ctx ww; + unsigned int i; + u32 *results; + int err; + + if (!wal->count) + return 0; + + vma = __vm_create_scratch_for_read(&ce->engine->gt->ggtt->vm, + wal->count * sizeof(u32)); + if (IS_ERR(vma)) + return PTR_ERR(vma); + + intel_engine_pm_get(ce->engine); + i915_gem_ww_ctx_init(&ww, false); +retry: + err = i915_gem_object_lock(vma->obj, &ww); + if (err == 0) + err = intel_context_pin_ww(ce, &ww); + if (err) + goto err_pm; + + err = i915_vma_pin_ww(vma, &ww, 0, 0, + i915_vma_is_ggtt(vma) ? PIN_GLOBAL : PIN_USER); + if (err) + goto err_unpin; + + rq = i915_request_create(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto err_vma; + } + + err = i915_vma_move_to_active(vma, rq, EXEC_OBJECT_WRITE); + if (err == 0) + err = wa_list_srm(rq, wal, vma); + + i915_request_get(rq); + if (err) + i915_request_set_error_once(rq, err); + i915_request_add(rq); + + if (err) + goto err_rq; + + if (i915_request_wait(rq, 0, HZ / 5) < 0) { + err = -ETIME; + goto err_rq; + } + + results = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); + if (IS_ERR(results)) { + err = PTR_ERR(results); + goto err_rq; + } + + err = 0; + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + if (mcr_range(rq->i915, i915_mmio_reg_offset(wa->reg))) + continue; + + if (!wa_verify(wal->gt, wa, results[i], wal->name, from)) + err = -ENXIO; + } + + i915_gem_object_unpin_map(vma->obj); + +err_rq: + i915_request_put(rq); +err_vma: + i915_vma_unpin(vma); +err_unpin: + intel_context_unpin(ce); +err_pm: + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(&ww); + if (!err) + goto retry; + } + i915_gem_ww_ctx_fini(&ww); + intel_engine_pm_put(ce->engine); + i915_vma_put(vma); + return err; +} + +int intel_engine_verify_workarounds(struct intel_engine_cs *engine, + const char *from) +{ + return engine_wa_list_verify(engine->kernel_context, + &engine->wa_list, + from); +} + +#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) +#include "selftest_workarounds.c" +#endif |