In Indirect and Per context w/a batch buffer,
+WaDisableCtxRestoreArbitration
Signed-off-by: Rafael Barbalho <rafael.barbalho@xxxxxxxxx>
Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_lrc.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index ee968e1..8ed6433 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1121,7 +1121,6 @@ create_wa_bb(struct intel_engine_cs *ring, uint32_t bb_size)
static int gen8_init_indirectctx_bb(struct intel_engine_cs *ring,
struct intel_context *ctx)
{
- int i;
struct intel_ringbuffer *ringbuf = NULL;
ringbuf = create_wa_bb(ring, PAGE_SIZE);
@@ -1130,10 +1129,11 @@ static int gen8_init_indirectctx_bb(struct intel_engine_cs *ring,
ctx->indirect_ctx_wa_bb = ringbuf;
- /* FIXME: fill one cache line with NOOPs.
- * Replace these instructions with WA
- */
- for (i = 0; i < 16; ++i)
+ /* WaDisableCtxRestoreArbitration:bdw,chv */
+ intel_logical_ring_emit(ringbuf, MI_ARB_ON_OFF | MI_ARB_DISABLE);
+
+ /* padding */
+ while (((unsigned long) ringbuf->tail % CACHELINE_BYTES) != 0)
intel_logical_ring_emit(ringbuf, MI_NOOP);
/*
@@ -1156,8 +1156,11 @@ static int gen8_init_perctx_bb(struct intel_engine_cs *ring,
ctx->per_ctx_wa_bb = ringbuf;
- /* FIXME: Replace these instructions with WA */
- for (i = 0; i < 15; ++i)
+ /* WaDisableCtxRestoreArbitration:bdw,chv */
+ intel_logical_ring_emit(ringbuf, MI_ARB_ON_OFF | MI_ARB_ENABLE);
+
+ /* padding */
+ for (i = 0; i < 14; ++i)
intel_logical_ring_emit(ringbuf, MI_NOOP);
intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_END);
--
2.3.0
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