diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 1df79a952291..a09aae70e579 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -793,6 +793,16 @@ static int chv_init_workarounds(struct intel_engine_cs *ring) PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE | STALL_DOP_GATING_DISABLE); + /* Use Force Non-Coherent whenever executing a 3D context. This is a + * workaround for a possible hang in the unlikely event a TLB + * invalidation occurs during a PSD flush. + */ + /* WaForceEnableNonCoherent:chv */ + /* WaHdcDisableFetchWhenMasked:chv */ + WA_SET_BIT_MASKED(HDC_CHICKEN0, + HDC_FORCE_NON_COHERENT | + HDC_DONOT_FETCH_MEM_WHEN_MASKED); + return 0; } |