drm/amdgpu: job is secure iff CS is secure (v5)

Mark a job as secure, if and only if the command
submission flag has the secure flag set.

v2: fix the null job pointer while in vmid 0
submission.
v3: Context --> Command submission.
v4: filling cs parser with cs->in.flags
v5: move the job secure flag setting out of amdgpu_cs_submit()
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -232,6 +232,8 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
 	if (ret)
 		goto free_all_kdata;
 
+	p->job->secure = cs->in.flags & AMDGPU_CS_FLAGS_SECURE;
+
 	if (p->ctx->vram_lost_counter != p->job->vram_lost_counter) {
 		ret = -ECANCELED;
 		goto free_all_kdata;

drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c

@@ -214,7 +214,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 	if (job && ring->funcs->emit_cntxcntl) {
 		status |= job->preamble_status;
 		status |= job->preemption_status;
-		amdgpu_ring_emit_cntxcntl(ring, status, false);
+		amdgpu_ring_emit_cntxcntl(ring, status, job->secure);
 	}
 
 	for (i = 0; i < num_ibs; ++i) {
@@ -233,7 +233,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 	}
 
 	if (ring->funcs->emit_tmz)
-		amdgpu_ring_emit_tmz(ring, false, false);
+		amdgpu_ring_emit_tmz(ring, false, job ? job->secure : false);
 
 #ifdef CONFIG_X86_64
 	if (!(adev->flags & AMD_IS_APU))

drivers/gpu/drm/amd/amdgpu/amdgpu_job.h

@@ -63,6 +63,8 @@ struct amdgpu_job {
 	uint64_t		uf_addr;
 	uint64_t		uf_sequence;
 
+	/* the job is due to a secure command submission */
+	bool			secure;
 };
 
 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,