drm/amdgpu: stop unmapping MQD for kernel queues v3

This looks unnecessary and actually extremely harmful since using kmap()
is not possible while inside the ring reset.

Remove all the extra mapping and unmapping of the MQDs.

v2: also fix debugfs
v3: fix coding style typo

Signed-off-by: Christian König <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 15 insertions, 87 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index dceb5ad38862..b6889e32dd8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -3001,37 +3001,19 @@ static int gfx_v12_0_kgq_init_queue(struct amdgpu_ring *ring, bool reset)
 
 static int gfx_v12_0_cp_async_gfx_ring_resume(struct amdgpu_device *adev)
 {
-	int r, i;
-	struct amdgpu_ring *ring;
+	int i, r;
 
 	for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
-		ring = &adev->gfx.gfx_ring[i];
-
-		r = amdgpu_bo_reserve(ring->mqd_obj, false);
-		if (unlikely(r != 0))
-			goto done;
-
-		r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-		if (!r) {
-			r = gfx_v12_0_kgq_init_queue(ring, false);
-			amdgpu_bo_kunmap(ring->mqd_obj);
-			ring->mqd_ptr = NULL;
-		}
-		amdgpu_bo_unreserve(ring->mqd_obj);
+		r = gfx_v12_0_kgq_init_queue(&adev->gfx.gfx_ring[i], false);
 		if (r)
-			goto done;
+			return r;
 	}
 
 	r = amdgpu_gfx_enable_kgq(adev, 0);
 	if (r)
-		goto done;
-
-	r = gfx_v12_0_cp_gfx_start(adev);
-	if (r)
-		goto done;
+		return r;
 
-done:
-	return r;
+	return gfx_v12_0_cp_gfx_start(adev);
 }
 
 static int gfx_v12_0_compute_mqd_init(struct amdgpu_device *adev, void *m,
@@ -3344,57 +3326,25 @@ static int gfx_v12_0_kcq_init_queue(struct amdgpu_ring *ring, bool reset)
 
 static int gfx_v12_0_kiq_resume(struct amdgpu_device *adev)
 {
-	struct amdgpu_ring *ring;
-	int r;
-
-	ring = &adev->gfx.kiq[0].ring;
-
-	r = amdgpu_bo_reserve(ring->mqd_obj, false);
-	if (unlikely(r != 0))
-		return r;
-
-	r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-	if (unlikely(r != 0)) {
-		amdgpu_bo_unreserve(ring->mqd_obj);
-		return r;
-	}
-
-	gfx_v12_0_kiq_init_queue(ring);
-	amdgpu_bo_kunmap(ring->mqd_obj);
-	ring->mqd_ptr = NULL;
-	amdgpu_bo_unreserve(ring->mqd_obj);
-	ring->sched.ready = true;
+	gfx_v12_0_kiq_init_queue(&adev->gfx.kiq[0].ring);
+	adev->gfx.kiq[0].ring.sched.ready = true;
 	return 0;
 }
 
 static int gfx_v12_0_kcq_resume(struct amdgpu_device *adev)
 {
-	struct amdgpu_ring *ring = NULL;
-	int r = 0, i;
+	int i, r;
 
 	if (!amdgpu_async_gfx_ring)
 		gfx_v12_0_cp_compute_enable(adev, true);
 
 	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
-		ring = &adev->gfx.compute_ring[i];
-
-		r = amdgpu_bo_reserve(ring->mqd_obj, false);
-		if (unlikely(r != 0))
-			goto done;
-		r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-		if (!r) {
-			r = gfx_v12_0_kcq_init_queue(ring, false);
-			amdgpu_bo_kunmap(ring->mqd_obj);
-			ring->mqd_ptr = NULL;
-		}
-		amdgpu_bo_unreserve(ring->mqd_obj);
+		r = gfx_v12_0_kcq_init_queue(&adev->gfx.compute_ring[i], false);
 		if (r)
-			goto done;
+			return r;
 	}
 
-	r = amdgpu_gfx_enable_kcq(adev, 0);
-done:
-	return r;
+	return amdgpu_gfx_enable_kcq(adev, 0);
 }
 
 static int gfx_v12_0_cp_resume(struct amdgpu_device *adev)
@@ -5224,20 +5174,9 @@ static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring, unsigned int vmid)
 		return r;
 	}
 
-	r = amdgpu_bo_reserve(ring->mqd_obj, false);
-	if (unlikely(r != 0)) {
-		dev_err(adev->dev, "fail to resv mqd_obj\n");
-		return r;
-	}
-	r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-	if (!r) {
-		r = gfx_v12_0_kgq_init_queue(ring, true);
-		amdgpu_bo_kunmap(ring->mqd_obj);
-		ring->mqd_ptr = NULL;
-	}
-	amdgpu_bo_unreserve(ring->mqd_obj);
+	r = gfx_v12_0_kgq_init_queue(ring, true);
 	if (r) {
-		DRM_ERROR("fail to unresv mqd_obj\n");
+		dev_err(adev->dev, "failed to init kgq\n");
 		return r;
 	}
 
@@ -5264,20 +5203,9 @@ static int gfx_v12_0_reset_kcq(struct amdgpu_ring *ring, unsigned int vmid)
 		return r;
 	}
 
-	r = amdgpu_bo_reserve(ring->mqd_obj, false);
-	if (unlikely(r != 0)) {
-		DRM_ERROR("fail to resv mqd_obj\n");
-		return r;
-	}
-	r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-	if (!r) {
-		r = gfx_v12_0_kcq_init_queue(ring, true);
-		amdgpu_bo_kunmap(ring->mqd_obj);
-		ring->mqd_ptr = NULL;
-	}
-	amdgpu_bo_unreserve(ring->mqd_obj);
+	r = gfx_v12_0_kcq_init_queue(ring, true);
 	if (r) {
-		DRM_ERROR("fail to unresv mqd_obj\n");
+		dev_err(adev->dev, "failed to init kcq\n");
 		return r;
 	}
 	r = amdgpu_mes_map_legacy_queue(adev, ring);