[PATCH 02/13] drm/amdgpu:enable mcbp for gfx9

[Monk Liu]

set bit 21 of IB.control filed to actually enable
MCBP for SRIOV

Change-Id: Ie5126d5be95e037087cf7167c28c61975f40d784
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index ad82ab7..0d8fb51 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3016,6 +3016,9 @@ static void gfx_v9_0_ring_emit_ib_gfx(struct amdgpu_ring *ring,
 
         control |= ib->length_dw | (vm_id << 24);
 
+		if (amdgpu_sriov_vf(ring->adev) && (ib->flags & AMDGPU_IB_FLAG_PREEMPT))
+			control |= (1 << 21);
+
         amdgpu_ring_write(ring, header);
 	BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
         amdgpu_ring_write(ring,
-- 
2.7.4