drm/amdgpu: remove job parameter from amdgpu_fence_emit()

What we actually care about is the amdgpu_fence object
so pass that in explicitly to avoid possible mistakes
in the future.

The job_run_counter handling can be safely removed at this
point as we no longer support job resubmission.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: alexdeucher

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

@@ -99,14 +99,14 @@ static u32 amdgpu_fence_read(struct amdgpu_ring *ring)
  *
  * @ring: ring the fence is associated with
  * @f: resulting fence object
- * @job: job the fence is embedded in
+ * @af: amdgpu fence input
  * @flags: flags to pass into the subordinate .emit_fence() call
  *
  * Emits a fence command on the requested ring (all asics).
  * Returns 0 on success, -ENOMEM on failure.
  */
-int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f, struct amdgpu_job *job,
-		      unsigned int flags)
+int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f,
+		      struct amdgpu_fence *af, unsigned int flags)
 {
 	struct amdgpu_device *adev = ring->adev;
 	struct dma_fence *fence;
@@ -115,36 +115,28 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f, struct amd
 	uint32_t seq;
 	int r;
 
-	if (job == NULL) {
+	if (!af) {
 		/* create a separate hw fence */
 		am_fence = kzalloc(sizeof(*am_fence), GFP_KERNEL);
 		if (!am_fence)
 			return -ENOMEM;
 	} else {
-		/* take use of job-embedded fence */
-		am_fence = &job->hw_fence;
+		am_fence = af;
 	}
 	fence = &am_fence->base;
 	am_fence->ring = ring;
 
 	seq = ++ring->fence_drv.sync_seq;
-	if (job && job->job_run_counter) {
-		/* reinit seq for resubmitted jobs */
-		fence->seqno = seq;
-		/* TO be inline with external fence creation and other drivers */
+	if (af) {
+		dma_fence_init(fence, &amdgpu_job_fence_ops,
+			       &ring->fence_drv.lock,
+			       adev->fence_context + ring->idx, seq);
+		/* Against remove in amdgpu_job_{free, free_cb} */
 		dma_fence_get(fence);
 	} else {
-		if (job) {
-			dma_fence_init(fence, &amdgpu_job_fence_ops,
-				       &ring->fence_drv.lock,
-				       adev->fence_context + ring->idx, seq);
-			/* Against remove in amdgpu_job_{free, free_cb} */
-			dma_fence_get(fence);
-		} else {
-			dma_fence_init(fence, &amdgpu_fence_ops,
-				       &ring->fence_drv.lock,
-				       adev->fence_context + ring->idx, seq);
-		}
+		dma_fence_init(fence, &amdgpu_fence_ops,
+			       &ring->fence_drv.lock,
+			       adev->fence_context + ring->idx, seq);
 	}
 
 	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,

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

@@ -128,6 +128,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs,
 	struct amdgpu_device *adev = ring->adev;
 	struct amdgpu_ib *ib = &ibs[0];
 	struct dma_fence *tmp = NULL;
+	struct amdgpu_fence *af;
 	bool need_ctx_switch;
 	struct amdgpu_vm *vm;
 	uint64_t fence_ctx;
@@ -154,13 +155,15 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs,
 		csa_va = job->csa_va;
 		gds_va = job->gds_va;
 		init_shadow = job->init_shadow;
+		af = &job->hw_fence;
 	} else {
 		vm = NULL;
 		fence_ctx = 0;
 		shadow_va = 0;
 		csa_va = 0;
 		gds_va = 0;
 		init_shadow = false;
+		af = NULL;
 	}
 
 	if (!ring->sched.ready) {
@@ -282,7 +285,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs,
 		amdgpu_ring_init_cond_exec(ring, ring->cond_exe_gpu_addr);
 	}
 
-	r = amdgpu_fence_emit(ring, f, job, fence_flags);
+	r = amdgpu_fence_emit(ring, f, af, fence_flags);
 	if (r) {
 		dev_err(adev->dev, "failed to emit fence (%d)\n", r);
 		if (job && job->vmid)

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

@@ -157,8 +157,8 @@ void amdgpu_fence_driver_hw_init(struct amdgpu_device *adev);
 void amdgpu_fence_driver_hw_fini(struct amdgpu_device *adev);
 int amdgpu_fence_driver_sw_init(struct amdgpu_device *adev);
 void amdgpu_fence_driver_sw_fini(struct amdgpu_device *adev);
-int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence, struct amdgpu_job *job,
-		      unsigned flags);
+int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f,
+		      struct amdgpu_fence *af, unsigned int flags);
 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,
 			      uint32_t timeout);
 bool amdgpu_fence_process(struct amdgpu_ring *ring);