drm/amdgpu:implement CONTEXT_CONTROL (v5)

v1:
for gfx8, use CONTEXT_CONTROL package to dynamically
skip preamble CEIB and other load_xxx command in sequence.

v2:
support GFX7 as well.
remove cntxcntl in compute ring funcs because CPC doesn't
support this packet.

v3: fix reduntant judgement in cntxcntl.
v4: some cleanups, don't change cs_submit()
v5: keep old MESA supported & bump up KMS version.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Ack-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 56bde6436a1f..61b7e25535bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -850,6 +850,14 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
                 if (r)
                         return r;
 
+                if (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) {
+                        parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT;
+                        if (!parser->ctx->preamble_presented) {
+                                parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
+                                parser->ctx->preamble_presented = true;
+                        }
+                }
+
                 if (parser->job->ring && parser->job->ring != ring)
                         return -EINVAL;