On 10/25/22 11:03 AM, Matt Atwood wrote: > Wa_18018764978 applies to specific steppings of DG2 (G11 C0+, > G11 and G12 A0+). > > Bspec: 66622 > > Signed-off-by: Matt Atwood <matthew.s.atwood@xxxxxxxxx> With fixups to commit messages as mentioned by Gustavo, Reviewed-by: Wayne Boyer <wayne.boyer@xxxxxxxxx> > --- > drivers/gpu/drm/i915/gt/intel_gt_regs.h | 3 +++ > drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++ > 2 files changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > index 36d95b79022c..e8372d4cd548 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > @@ -448,6 +448,9 @@ > #define GEN8_L3CNTLREG _MMIO(0x7034) > #define GEN8_ERRDETBCTRL (1 << 9) > > +#define PSS_MODE2 _MMIO(0x703c) > +#define SCOREBOARD_STALL_FLUSH_CONTROL REG_BIT(5) > + > #define GEN7_SC_INSTDONE _MMIO(0x7100) > #define GEN12_SC_INSTDONE_EXTRA _MMIO(0x7104) > #define GEN12_SC_INSTDONE_EXTRA2 _MMIO(0x7108) > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c > index 63e1e6becf34..ced3a26cf7e7 100644 > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c > @@ -743,6 +743,11 @@ static void dg2_ctx_workarounds_init(struct intel_engine_cs *engine, > 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_masked_en(wal, PSS_MODE2, SCOREBOARD_STALL_FLUSH_CONTROL); > + > /* Wa_15010599737:dg2 */ > wa_masked_en(wal, CHICKEN_RASTER_1, DIS_SF_ROUND_NEAREST_EVEN); > } -- Wayne Boyer Graphics Software Engineer AXG SCSS Platform Enablement
