diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_workarounds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_workarounds.c | 148 |
1 files changed, 80 insertions, 68 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 4d2dece96011..589d009032fc 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -123,6 +123,22 @@ static void wa_init_finish(struct i915_wa_list *wal) 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); @@ -225,13 +241,13 @@ static void wa_mcr_add(struct i915_wa_list *wal, i915_mcr_reg_t reg, 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, false); + 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, false); + wa_mcr_add(wal, reg, clear, set, clear | set, false); } static void @@ -621,10 +637,7 @@ 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, - intel_uncore_read(engine->uncore, GEN8_L3CNTLREG) | - GEN8_ERRDETBCTRL); + wa_write(wal, GEN8_L3CNTLREG, GEN8_ERRDETBCTRL); /* WaForceEnableNonCoherent:icl * This is not the same workaround as in early Gen9 platforms, where @@ -653,7 +666,7 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine, /* 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, /* write-only register; skip validation */ + 0, 0xFFFFFFFF); /* Wa_1406306137:icl,ehl */ @@ -670,38 +683,8 @@ static void dg2_ctx_gt_tuning_init(struct intel_engine_cs *engine, 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_add(wal, - XEHP_FF_MODE2, - FF_MODE2_TDS_TIMER_MASK, - FF_MODE2_TDS_TIMER_128, - 0, false); -} - -/* - * These settings aren't actually workarounds, but general tuning settings that - * need to be programmed on several platforms. - */ -static void gen12_ctx_gt_tuning_init(struct intel_engine_cs *engine, - struct i915_wa_list *wal) -{ - /* - * 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 this register is further modified - * according to the FF_MODE2 guidance given by Wa_1608008084:gen12. - * Wa_1608008084 tells us the FF_MODE2 register will return the wrong - * value when read. The default value for this register is zero for all - * fields and there are no bit masks. So instead of doing a RMW we - * should just write TDS timer value. For the same reason read - * verification is ignored. - */ - wa_add(wal, - GEN12_FF_MODE2, - FF_MODE2_TDS_TIMER_MASK, - FF_MODE2_TDS_TIMER_128, - 0, false); + 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, @@ -709,8 +692,6 @@ static void gen12_ctx_workarounds_init(struct intel_engine_cs *engine, { struct drm_i915_private *i915 = engine->i915; - gen12_ctx_gt_tuning_init(engine, wal); - /* * Wa_1409142259:tgl,dg1,adl-p * Wa_1409347922:tgl,dg1,adl-p @@ -732,15 +713,27 @@ static void gen12_ctx_workarounds_init(struct intel_engine_cs *engine, GEN9_PREEMPT_GPGPU_THREAD_GROUP_LEVEL); /* - * Wa_16011163337 + * 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. * - * Like in gen12_ctx_gt_tuning_init(), read verification is ignored due - * to Wa_1608008084. + * 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, - FF_MODE2_GS_TIMER_MASK, - FF_MODE2_GS_TIMER_224, + ~0, + FF_MODE2_TDS_TIMER_128 | FF_MODE2_GS_TIMER_224, 0, false); if (!IS_DG1(i915)) { @@ -987,6 +980,9 @@ void intel_engine_init_ctx_wa(struct intel_engine_cs *engine) 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; @@ -1003,13 +999,36 @@ int intel_engine_emit_ctx_wa(struct i915_request *rq) 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++ = wa->set; + *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); @@ -1485,6 +1504,18 @@ gen12_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *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 @@ -1710,7 +1741,6 @@ static void xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) { /* Wa_14018778641 / 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_22016670082 */ @@ -1743,8 +1773,6 @@ xelpmp_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) * GT, the media GT's versions are regular singleton registers. */ wa_write_or(wal, XELPMP_GSC_MOD_CTRL, FORCE_MISS_FTLB); - wa_write_or(wal, XELPMP_VDBX_MOD_CTRL, FORCE_MISS_FTLB); - wa_write_or(wal, XELPMP_VEBX_MOD_CTRL, FORCE_MISS_FTLB); debug_dump_steering(gt); } @@ -1850,22 +1878,6 @@ void intel_gt_init_workarounds(struct intel_gt *gt) wa_init_finish(wal); } -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 bool wa_verify(struct intel_gt *gt, const struct i915_wa *wa, u32 cur, const char *name, const char *from) @@ -3237,7 +3249,7 @@ wa_list_srm(struct i915_request *rq, const struct i915_wa_list *wal, struct i915_vma *vma) { - struct drm_i915_private *i915 = rq->engine->i915; + struct drm_i915_private *i915 = rq->i915; unsigned int i, count = 0; const struct i915_wa *wa; u32 srm, *cs; @@ -3336,7 +3348,7 @@ retry: err = 0; for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { - if (mcr_range(rq->engine->i915, i915_mmio_reg_offset(wa->reg))) + if (mcr_range(rq->i915, i915_mmio_reg_offset(wa->reg))) continue; if (!wa_verify(wal->gt, wa, results[i], wal->name, from)) |