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drm/i915: Emit SRM after the MSG_FBC_REND_STATE LRI

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The spec tells us that we need to emit an SRM after the LRI
to MSG_FBC_REND_STATE.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-11-06 23:02:20 +02:00 committed by Daniel Vetter
parent 9688ecadd2
commit 37c1d94fa8
2 changed files with 5 additions and 2 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -235,6 +235,7 @@
*/
#define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*x-1)
#define MI_STORE_REGISTER_MEM(x) MI_INSTR(0x24, 2*x-1)
#define MI_SRM_LRM_GLOBAL_GTT (1<<22)
#define MI_FLUSH_DW MI_INSTR(0x26, 1) /* for GEN6 */
#define MI_FLUSH_DW_STORE_INDEX (1<<21)
#define MI_INVALIDATE_TLB (1<<18)

6
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -285,14 +285,16 @@ static int gen7_ring_fbc_flush(struct intel_ring_buffer *ring, u32 value)
if (!ring->fbc_dirty)
return 0;
ret = intel_ring_begin(ring, 4);
ret = intel_ring_begin(ring, 6);
if (ret)
return ret;
intel_ring_emit(ring, MI_NOOP);
/* WaFbcNukeOn3DBlt:ivb/hsw */
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
intel_ring_emit(ring, MSG_FBC_REND_STATE);
intel_ring_emit(ring, value);
intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) | MI_SRM_LRM_GLOBAL_GTT);
intel_ring_emit(ring, MSG_FBC_REND_STATE);
intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
intel_ring_advance(ring);
ring->fbc_dirty = false;