[PATCH 4/4] drm/amdgpu:enable MCBP for SR-IOV

[Monk Liu]

Change-Id: I779abc6a47593be0ff5234c3e2f2cdfd25ba70ca
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 8dba5ff..be49c30 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6552,6 +6552,10 @@ static void gfx_v8_0_ring_emit_ib_gfx(struct amdgpu_ring *ring,
 
 	control |= ib->length_dw | (vm_id << 24);
 
+	if (ring && amdgpu_sriov_vf(ring->adev) &&
+		ib->flags & AMDGPU_IB_FLAG_PREEMPT)
+		control |= (1<<21);
+
 	amdgpu_ring_write(ring, header);
 	amdgpu_ring_write(ring,
 #ifdef __BIG_ENDIAN
-- 
2.7.4