[Intel-gfx] [PATCH v2] drm/i915/mtl: Add initial gt workarounds
Matt Atwood
matthew.s.atwood at intel.com
Thu Jan 5 23:39:13 UTC 2023
On Tue, Jan 03, 2023 at 04:18:27PM -0800, Matt Roper wrote:
> On Thu, Dec 15, 2022 at 03:30:55PM -0800, Matt Atwood wrote:
> > From: Matt Roper <matthew.d.roper at intel.com>
> >
> > This patch introduces initial gt workarounds for the MTL platform.
> >
> > v2: drop redundant/stale comments specifying wa platforms affected
>
> This is being discussed on the other thread, but it also doesn't look
> like this actually happened completely in v2 here. You removed a few
> but most of the workarounds still have them?
Ack.
>
> > (Lucas). Drop Wa_22011802037 for MTL.
>
> This statement doesn't seem right...Wa_22011802037 is still (correctly)
> present for the affected variant/steppings of MTL.
You're right.
>
>
> Matt
>
> >
> > Bspec: 66622
> >
> > Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
> > Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
> > ---
> > drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
> > .../drm/i915/gt/intel_execlists_submission.c | 6 +-
> > drivers/gpu/drm/i915/gt/intel_gt_mcr.c | 11 +-
> > drivers/gpu/drm/i915/gt/intel_gt_regs.h | 5 +
> > drivers/gpu/drm/i915/gt/intel_workarounds.c | 115 +++++++++++++-----
> > drivers/gpu/drm/i915/gt/uc/intel_guc.c | 9 +-
> > .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 8 +-
> > drivers/gpu/drm/i915/i915_drv.h | 4 +
> > drivers/gpu/drm/i915/intel_device_info.c | 6 +
> > 9 files changed, 128 insertions(+), 42 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > index 99c4b866addd..e3f30bdf7e61 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > @@ -1494,10 +1494,12 @@ static int __intel_engine_stop_cs(struct intel_engine_cs *engine,
> > intel_uncore_write_fw(uncore, mode, _MASKED_BIT_ENABLE(STOP_RING));
> >
> > /*
> > - * Wa_22011802037 : gen11, gen12, Prior to doing a reset, ensure CS is
> > + * Wa_22011802037 : Prior to doing a reset, ensure CS is
> > * stopped, set ring stop bit and prefetch disable bit to halt CS
> > */
> > - if (IS_GRAPHICS_VER(engine->i915, 11, 12))
> > + if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
> > + (GRAPHICS_VER(engine->i915) >= 11 &&
> > + GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
> > intel_uncore_write_fw(uncore, RING_MODE_GEN7(engine->mmio_base),
> > _MASKED_BIT_ENABLE(GEN12_GFX_PREFETCH_DISABLE));
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
> > index 49a8f10d76c7..c14476c777cc 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
> > @@ -2989,10 +2989,12 @@ static void execlists_reset_prepare(struct intel_engine_cs *engine)
> > intel_engine_stop_cs(engine);
> >
> > /*
> > - * Wa_22011802037:gen11/gen12: In addition to stopping the cs, we need
> > + * Wa_22011802037: In addition to stopping the cs, we need
> > * to wait for any pending mi force wakeups
> > */
> > - if (IS_GRAPHICS_VER(engine->i915, 11, 12))
> > + if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
> > + (GRAPHICS_VER(engine->i915) >= 11 &&
> > + GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
> > intel_engine_wait_for_pending_mi_fw(engine);
> >
> > engine->execlists.reset_ccid = active_ccid(engine);
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_mcr.c b/drivers/gpu/drm/i915/gt/intel_gt_mcr.c
> > index 41a237509dcf..4127830c33ca 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_mcr.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_mcr.c
> > @@ -164,8 +164,15 @@ void intel_gt_mcr_init(struct intel_gt *gt)
> > if (MEDIA_VER(i915) >= 13 && gt->type == GT_MEDIA) {
> > gt->steering_table[OADDRM] = xelpmp_oaddrm_steering_table;
> > } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) {
> > - fuse = REG_FIELD_GET(GT_L3_EXC_MASK,
> > - intel_uncore_read(gt->uncore, XEHP_FUSE4));
> > + /* Wa_14016747170 */
> > + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
> > + IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0))
> > + fuse = REG_FIELD_GET(MTL_GT_L3_EXC_MASK,
> > + intel_uncore_read(gt->uncore,
> > + MTL_GT_ACTIVITY_FACTOR));
> > + else
> > + fuse = REG_FIELD_GET(GT_L3_EXC_MASK,
> > + intel_uncore_read(gt->uncore, XEHP_FUSE4));
> >
> > /*
> > * Despite the register field being named "exclude mask" the
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> > index f8eb807b56f9..470d6feb456a 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> > @@ -414,6 +414,7 @@
> > #define TBIMR_FAST_CLIP REG_BIT(5)
> >
> > #define VFLSKPD MCR_REG(0x62a8)
> > +#define VF_PREFETCH_TLB_DIS REG_BIT(5)
> > #define DIS_OVER_FETCH_CACHE REG_BIT(1)
> > #define DIS_MULT_MISS_RD_SQUASH REG_BIT(0)
> >
> > @@ -1535,6 +1536,10 @@
> >
> > #define MTL_MEDIA_MC6 _MMIO(0x138048)
> >
> > +/* Wa_14016747170:mtl-p[a0], mtl-m[a0] */
> > +#define MTL_GT_ACTIVITY_FACTOR _MMIO(0x138010)
> > +#define MTL_GT_L3_EXC_MASK REG_GENMASK(5, 3)
> > +
> > #define GEN6_GT_THREAD_STATUS_REG _MMIO(0x13805c)
> > #define GEN6_GT_THREAD_STATUS_CORE_MASK 0x7
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > index bf84efb3f15f..fc166e25f606 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > @@ -786,6 +786,32 @@ static void dg2_ctx_workarounds_init(struct intel_engine_cs *engine,
> > wa_masked_en(wal, CACHE_MODE_1, MSAA_OPTIMIZATION_REDUC_DISABLE);
> > }
> >
> > +static void mtl_ctx_workarounds_init(struct intel_engine_cs *engine,
> > + struct i915_wa_list *wal)
> > +{
> > + struct drm_i915_private *i915 = engine->i915;
> > +
> > + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
> > + IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0)) {
> > + /* Wa_14014947963:mtl */
> > + wa_masked_field_set(wal, VF_PREEMPTION,
> > + PREEMPTION_VERTEX_COUNT, 0x4000);
> > +
> > + /* Wa_16013271637:mtl */
> > + wa_mcr_masked_en(wal, XEHP_SLICE_COMMON_ECO_CHICKEN1,
> > + MSC_MSAA_REODER_BUF_BYPASS_DISABLE);
> > +
> > + /* Wa_18019627453:mtl */
> > + wa_mcr_masked_en(wal, VFLSKPD, VF_PREFETCH_TLB_DIS);
> > +
> > + /* Wa_18018764978:mtl */
> > + wa_masked_en(wal, PSS_MODE2, SCOREBOARD_STALL_FLUSH_CONTROL);
> > + }
> > +
> > + /* Wa_18019271663:mtl */
> > + 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)
> > {
> > @@ -872,7 +898,9 @@ __intel_engine_init_ctx_wa(struct intel_engine_cs *engine,
> > if (engine->class != RENDER_CLASS)
> > goto done;
> >
> > - if (IS_PONTEVECCHIO(i915))
> > + if (IS_METEORLAKE(i915))
> > + mtl_ctx_workarounds_init(engine, wal);
> > + else if (IS_PONTEVECCHIO(i915))
> > ; /* noop; none at this time */
> > else if (IS_DG2(i915))
> > dg2_ctx_workarounds_init(engine, wal);
> > @@ -1628,7 +1656,10 @@ pvc_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
> > static void
> > xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
> > {
> > - /* FIXME: Actual workarounds will be added in future patch(es) */
> > + /* Wa_14014830051:mtl */
> > + if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
> > + IS_MTL_GRAPHICS_STEP(gt->i915, P, STEP_A0, STEP_B0))
> > + wa_mcr_write_clr(wal, SARB_CHICKEN1, COMP_CKN_IN);
> >
> > /*
> > * Unlike older platforms, we no longer setup implicit steering here;
> > @@ -2168,7 +2199,9 @@ void intel_engine_init_whitelist(struct intel_engine_cs *engine)
> >
> > wa_init_start(w, engine->gt, "whitelist", engine->name);
> >
> > - if (IS_PONTEVECCHIO(i915))
> > + if (IS_METEORLAKE(i915))
> > + ; /* noop; none at this time */
> > + else if (IS_PONTEVECCHIO(i915))
> > pvc_whitelist_build(engine);
> > else if (IS_DG2(i915))
> > dg2_whitelist_build(engine);
> > @@ -2278,6 +2311,34 @@ 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:mtl */
> > + 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:dg2,mtl */
> > + wa_mcr_masked_en(wal, GEN10_SAMPLER_MODE,
> > + SC_DISABLE_POWER_OPTIMIZATION_EBB);
> > +
> > + /* Wa_22013037850:dg2,mtl */
> > + wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW,
> > + DISABLE_128B_EVICTION_COMMAND_UDW);
> > + }
> > +
> > + 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:dg2,mtl */
> > + wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2,
> > + GEN12_DISABLE_READ_SUPPRESSION);
> > + }
> > +
> > if (IS_DG2(i915)) {
> > /* Wa_1509235366:dg2 */
> > wa_write_or(wal, GEN12_GAMCNTRL_CTRL, INVALIDATION_BROADCAST_MODE_DIS |
> > @@ -2289,13 +2350,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
> > wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2, GEN12_ENABLE_LARGE_GRF_MODE);
> > }
> >
> > - if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
> > - IS_DG2_G11(i915) || IS_DG2_G12(i915)) {
> > - /* Wa_1509727124:dg2 */
> > - wa_mcr_masked_en(wal, GEN10_SAMPLER_MODE,
> > - SC_DISABLE_POWER_OPTIMIZATION_EBB);
> > - }
> > -
> > if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0) ||
> > IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) {
> > /* Wa_14012419201:dg2 */
> > @@ -2327,14 +2381,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
> >
> > if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_B0, STEP_FOREVER) ||
> > IS_DG2_G11(i915) || IS_DG2_G12(i915)) {
> > - /* Wa_22013037850:dg2 */
> > - wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW,
> > - DISABLE_128B_EVICTION_COMMAND_UDW);
> > -
> > - /* Wa_22012856258:dg2 */
> > - wa_mcr_masked_en(wal, GEN8_ROW_CHICKEN2,
> > - GEN12_DISABLE_READ_SUPPRESSION);
> > -
> > /*
> > * Wa_22010960976:dg2
> > * Wa_14013347512:dg2
> > @@ -2944,6 +2990,27 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
> >
> > add_render_compute_tuning_settings(i915, wal);
> >
> > + if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
> > + IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0) ||
> > + IS_PONTEVECCHIO(i915) ||
> > + IS_DG2(i915)) {
> > + /* Wa_18018781329:dg2,pvc,mtl */
> > + wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
> > + wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
> > + wa_mcr_write_or(wal, VDBX_MOD_CTRL, FORCE_MISS_FTLB);
> > + wa_mcr_write_or(wal, VEBX_MOD_CTRL, FORCE_MISS_FTLB);
> > +
> > + /* Wa_22014226127:dg2,pvc,mtl */
> > + 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:dg2,mtl */
> > + wa_masked_en(wal, VFG_PREEMPTION_CHICKEN, POLYGON_TRIFAN_LINELOOP_DISABLE);
> > + }
> > +
> > if (IS_PONTEVECCHIO(i915)) {
> > /* Wa_16016694945 */
> > wa_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC);
> > @@ -2985,17 +3052,8 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
> > /* Wa_14015227452:dg2,pvc */
> > wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN4, XEHP_DIS_BBL_SYSPIPE);
> >
> > - /* Wa_22014226127:dg2,pvc */
> > - wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0, DISABLE_D8_D16_COASLESCE);
> > -
> > /* Wa_16015675438:dg2,pvc */
> > wa_masked_en(wal, FF_SLICE_CS_CHICKEN2, GEN12_PERF_FIX_BALANCING_CFE_DISABLE);
> > -
> > - /* Wa_18018781329:dg2,pvc */
> > - wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
> > - wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
> > - wa_mcr_write_or(wal, VDBX_MOD_CTRL, FORCE_MISS_FTLB);
> > - wa_mcr_write_or(wal, VEBX_MOD_CTRL, FORCE_MISS_FTLB);
> > }
> >
> > if (IS_DG2(i915)) {
> > @@ -3004,9 +3062,6 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
> > * Wa_22015475538:dg2
> > */
> > wa_mcr_write_or(wal, LSC_CHICKEN_BIT_0_UDW, DIS_CHAIN_2XSIMD8);
> > -
> > - /* Wa_18017747507:dg2 */
> > - wa_masked_en(wal, VFG_PREEMPTION_CHICKEN, POLYGON_TRIFAN_LINELOOP_DISABLE);
> > }
> >
> > if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_C0) || IS_DG2_G11(i915))
> > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
> > index c0b5aa6fde26..aed2973e5f8d 100644
> > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
> > +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
> > @@ -274,8 +274,9 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc)
> > if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_B0))
> > flags |= GUC_WA_GAM_CREDITS;
> >
> > - /* Wa_14014475959:dg2 */
> > - if (IS_DG2(gt->i915))
> > + /* Wa_14014475959:dg2,mtl */
> > + if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
> > + IS_DG2(gt->i915))
> > flags |= GUC_WA_HOLD_CCS_SWITCHOUT;
> >
> > /*
> > @@ -289,7 +290,9 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc)
> > flags |= GUC_WA_DUAL_QUEUE;
> >
> > /* Wa_22011802037: graphics version 11/12 */
> > - if (IS_GRAPHICS_VER(gt->i915, 11, 12))
> > + if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
> > + (GRAPHICS_VER(gt->i915) >= 11 &&
> > + GRAPHICS_VER_FULL(gt->i915) < IP_VER(12, 70)))
> > flags |= GUC_WA_PRE_PARSER;
> >
> > /* Wa_16011777198:dg2 */
> > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> > index 53f7f599cde3..f2d917132693 100644
> > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> > +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> > @@ -1621,7 +1621,7 @@ static void guc_engine_reset_prepare(struct intel_engine_cs *engine)
> > intel_engine_stop_cs(engine);
> >
> > /*
> > - * Wa_22011802037:gen11/gen12: In addition to stopping the cs, we need
> > + * Wa_22011802037: In addition to stopping the cs, we need
> > * to wait for any pending mi force wakeups
> > */
> > intel_engine_wait_for_pending_mi_fw(engine);
> > @@ -4202,8 +4202,10 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine)
> > engine->flags |= I915_ENGINE_HAS_TIMESLICES;
> >
> > /* Wa_14014475959:dg2 */
> > - if (IS_DG2(engine->i915) && engine->class == COMPUTE_CLASS)
> > - engine->flags |= I915_ENGINE_USES_WA_HOLD_CCS_SWITCHOUT;
> > + if (engine->class == COMPUTE_CLASS)
> > + if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
> > + IS_DG2(engine->i915))
> > + engine->flags |= I915_ENGINE_USES_WA_HOLD_CCS_SWITCHOUT;
> >
> > /*
> > * TODO: GuC supports timeslicing and semaphores as well, but they're
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > index 48fd82722f12..f742328c4d95 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -735,6 +735,10 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
> > (IS_METEORLAKE(__i915) && \
> > IS_DISPLAY_STEP(__i915, since, until))
> >
> > +#define IS_MTL_GRAPHICS_STEP(__i915, variant, since, until) \
> > + (IS_SUBPLATFORM(__i915, INTEL_METEORLAKE, INTEL_SUBPLATFORM_##variant) && \
> > + IS_GRAPHICS_STEP(__i915, since, until))
> > +
> > /*
> > * DG2 hardware steppings are a bit unusual. The hardware design was forked to
> > * create three variants (G10, G11, and G12) which each have distinct
> > diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
> > index 849baf6c3b3c..7add88dde79e 100644
> > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > @@ -343,6 +343,12 @@ static void intel_ipver_early_init(struct drm_i915_private *i915)
> >
> > ip_ver_read(i915, i915_mmio_reg_offset(GMD_ID_GRAPHICS),
> > &runtime->graphics.ip);
> > + /* Wa_22012778468:mtl */
> > + if (runtime->graphics.ip.ver == 0x0 &&
> > + INTEL_INFO(i915)->platform == INTEL_METEORLAKE) {
> > + RUNTIME_INFO(i915)->graphics.ip.ver = 12;
> > + RUNTIME_INFO(i915)->graphics.ip.rel = 70;
> > + }
> > ip_ver_read(i915, i915_mmio_reg_offset(GMD_ID_DISPLAY),
> > &runtime->display.ip);
> > ip_ver_read(i915, i915_mmio_reg_offset(GMD_ID_MEDIA),
> > --
> > 2.38.1
> >
>
> --
> Matt Roper
> Graphics Software Engineer
> VTT-OSGC Platform Enablement
> Intel Corporation
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