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drm/i915/tgl: Implement Wa_1406941453

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Enable Small PL for power benefit.

Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190713010940.17711-18-lucas.demarchi@intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20190726000226.26914-4-lucas.demarchi@intel.com
This commit is contained in:
Michel Thierry 2019-07-25 17:02:26 -07:00 committed by Lucas De Marchi
parent 1c75749709
commit 7f0cc34b53
2 changed files with 10 additions and 0 deletions
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7
drivers/gpu/drm/i915/gt/intel_workarounds.c
View File

@ -1260,6 +1260,13 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
{
struct drm_i915_private *i915 = engine->i915;
if (IS_GEN(i915, 12)) {
/* Wa_1406941453:tgl */
wa_masked_en(wal,
SAMPLER_MODE,
SAMPLER_ENABLE_SMALL_PL);
}
if (IS_GEN(i915, 11)) {
/* This is not an Wa. Enable for better image quality */
wa_masked_en(wal,

3
drivers/gpu/drm/i915/i915_reg.h
View File

@ -8965,6 +8965,9 @@ enum {
#define GEN9_DG_MIRROR_FIX_ENABLE (1 << 5)
#define GEN9_CCS_TLB_PREFETCH_ENABLE (1 << 3)
#define SAMPLER_MODE _MMIO(0xe18c)
#define SAMPLER_ENABLE_SMALL_PL (1 << 15)
#define GEN8_ROW_CHICKEN _MMIO(0xe4f0)
#define FLOW_CONTROL_ENABLE (1 << 15)
#define PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE (1 << 8)