From: Mika Kuoppala Date: Fri, 7 Feb 2020 15:51:37 +0000 (+0200) Subject: drm/i915: Disable tesselation clock gating on tgl A0 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=561db8296d8b88ac21e76f99ba95f8de2c830359;p=linux.git drm/i915: Disable tesselation clock gating on tgl A0 Disable TEDOP clock gating flow by programming 0x20A0[19] = 1 References: HSDES#1407928979 Signed-off-by: Mika Kuoppala Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20200207155138.30978-1-mika.kuoppala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 61106129287fe..4bbea781c142c 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1352,6 +1352,11 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) wa_write_or(wal, GEN7_SARCHKMD, GEN7_DISABLE_SAMPLER_PREFETCH); + + /* Wa_1407928979:tgl */ + wa_write_or(wal, + GEN7_FF_THREAD_MODE, + GEN12_FF_TESSELATION_DOP_GATE_DISABLE); } if (IS_GEN(i915, 11)) { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index dc206723f25ec..b62029a10ed65 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3165,6 +3165,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define GEN7_FF_THREAD_MODE _MMIO(0x20a0) #define GEN7_FF_SCHED_MASK 0x0077070 #define GEN8_FF_DS_REF_CNT_FFME (1 << 19) +#define GEN12_FF_TESSELATION_DOP_GATE_DISABLE BIT(19) #define GEN7_FF_TS_SCHED_HS1 (0x5 << 16) #define GEN7_FF_TS_SCHED_HS0 (0x3 << 16) #define GEN7_FF_TS_SCHED_LOAD_BALANCE (0x1 << 16)