diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_workarounds.c | 13 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index f0317bde3aab..987def26ce82 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2242,6 +2242,7 @@ enum i915_power_well_id { #define RING_RESET_CTL(base) _MMIO((base)+0xd0) #define RESET_CTL_REQUEST_RESET (1 << 0) #define RESET_CTL_READY_TO_RESET (1 << 1) +#define RING_SEMA_WAIT_POLL(base) _MMIO((base) + 0x24c) #define HSW_GTT_CACHE_EN _MMIO(0x4024) #define GTT_CACHE_EN_ALL 0xF0007FFF diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index bb03f6d8b3d1..b892ca8396e8 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -2174,6 +2174,8 @@ int intel_gpu_reset(struct drm_i915_private *dev_priv, unsigned engine_mask) * Thus assume it is best to stop engines on all gens * where we have a gpu reset. * + * WaKBLVECSSemaphoreWaitPoll:kbl (on ALL_ENGINES) + * * WaMediaResetMainRingCleanup:ctg,elk (presumably) * * FIXME: Wa for more modern gens needs to be validated diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c index b1ab56a1ec31..24b929ce3341 100644 --- a/drivers/gpu/drm/i915/intel_workarounds.c +++ b/drivers/gpu/drm/i915/intel_workarounds.c @@ -666,6 +666,19 @@ static void kbl_gt_workarounds_apply(struct drm_i915_private *dev_priv) I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA, I915_READ(GEN9_GAMT_ECO_REG_RW_IA) | GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS); + + /* WaKBLVECSSemaphoreWaitPoll:kbl */ + if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_E0)) { + struct intel_engine_cs *engine; + unsigned int tmp; + + for_each_engine(engine, dev_priv, tmp) { + if (engine->id == RCS) + continue; + + I915_WRITE(RING_SEMA_WAIT_POLL(engine->mmio_base), 1); + } + } } static void glk_gt_workarounds_apply(struct drm_i915_private *dev_priv) |