[PATCH 7/9] drm/amdgpu/sdma: Move SDMA v5.x queue reset to common code

["Timur Kristóf" <timur.kristof@gmail.com>]

The code was exactly the same between SDMA v5.0 and v5.2
furthermore the exact same implementation can be shared
between all SDMA versions that don't use MES.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 37 ++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h |  4 +++
 drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c   | 25 +---------------
 drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c   | 25 +---------------
 4 files changed, 43 insertions(+), 48 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index 3495b7553950..71a7a70a80c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -628,3 +628,40 @@ int amdgpu_sdma_reset_engine(struct amdgpu_device *adev, uint32_t instance_id,
 
 	return ret;
 }
+
+/**
+ * amdgpu_sdma_reset_queue_legacy() - Reset legacy SDMA queue after timeout (without MES)
+ *
+ * @ring: Pointer to the ring of the SDMA queue
+ * @vmid: VMID of the timed out job
+ * @timedout_fence: Fence of the timed out job
+ *
+ * Common implementation for resetting SDMA queues without MES (legacy).
+ * This relies on the proper amdgpu_sdma_funcs to be set up
+ * for the given ring.
+ *
+ * Applicable to SDMA versions that don't rely on the MES yet,
+ * that is all versions up to SDMA v5.x and older.
+ */
+int amdgpu_sdma_reset_queue_legacy(struct amdgpu_ring *ring,
+				   unsigned int vmid,
+				   struct amdgpu_fence *timedout_fence)
+{
+	struct amdgpu_device *adev = ring->adev;
+	int r;
+
+	if (ring->me >= adev->sdma.num_instances) {
+		dev_err(adev->dev, "sdma instance not found\n");
+		return -EINVAL;
+	}
+
+	amdgpu_ring_reset_helper_begin(ring, timedout_fence);
+
+	amdgpu_amdkfd_suspend(adev, true);
+	r = amdgpu_sdma_reset_engine(adev, ring->me, true);
+	amdgpu_amdkfd_resume(adev, true);
+	if (r)
+		return r;
+
+	return amdgpu_ring_reset_helper_end(ring, timedout_fence);
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
index 44ba997c8e80..fb0316b28f9d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
@@ -157,6 +157,10 @@ struct amdgpu_buffer_funcs {
 int amdgpu_sdma_reset_engine(struct amdgpu_device *adev, uint32_t instance_id,
 			     bool caller_handles_kernel_queues);
 
+int amdgpu_sdma_reset_queue_legacy(struct amdgpu_ring *ring,
+				   unsigned int vmid,
+				   struct amdgpu_fence *timedout_fence);
+
 #define amdgpu_emit_copy_buffer(adev, ib, s, d, b, t) (adev)->mman.buffer_funcs->emit_copy_buffer((ib),  (s), (d), (b), (t))
 #define amdgpu_emit_fill_buffer(adev, ib, s, d, b) (adev)->mman.buffer_funcs->emit_fill_buffer((ib), (s), (d), (b))
 
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
index d24659a69382..a4d2a107c74f 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
@@ -1495,29 +1495,6 @@ static int sdma_v5_0_wait_for_idle(struct amdgpu_ip_block *ip_block)
 	return -ETIMEDOUT;
 }
 
-static int sdma_v5_0_reset_queue(struct amdgpu_ring *ring,
-				 unsigned int vmid,
-				 struct amdgpu_fence *timedout_fence)
-{
-	struct amdgpu_device *adev = ring->adev;
-	int r;
-
-	if (ring->me >= adev->sdma.num_instances) {
-		dev_err(adev->dev, "sdma instance not found\n");
-		return -EINVAL;
-	}
-
-	amdgpu_ring_reset_helper_begin(ring, timedout_fence);
-
-	amdgpu_amdkfd_suspend(adev, true);
-	r = amdgpu_sdma_reset_engine(adev, ring->me, true);
-	amdgpu_amdkfd_resume(adev, true);
-	if (r)
-		return r;
-
-	return amdgpu_ring_reset_helper_end(ring, timedout_fence);
-}
-
 static int sdma_v5_0_stop_queue(struct amdgpu_ring *ring)
 {
 	u32 f32_cntl, freeze, cntl, stat1_reg;
@@ -1913,7 +1890,7 @@ static const struct amdgpu_ring_funcs sdma_v5_0_ring_funcs = {
 	.emit_reg_write_reg_wait = sdma_v5_0_ring_emit_reg_write_reg_wait,
 	.init_cond_exec = sdma_v5_0_ring_init_cond_exec,
 	.preempt_ib = sdma_v5_0_ring_preempt_ib,
-	.reset = sdma_v5_0_reset_queue,
+	.reset = amdgpu_sdma_reset_queue_legacy,
 };
 
 static void sdma_v5_0_set_ring_funcs(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
index 76e1f9f39525..e7613e27e774 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
@@ -1414,29 +1414,6 @@ static int sdma_v5_2_wait_for_idle(struct amdgpu_ip_block *ip_block)
 	return -ETIMEDOUT;
 }
 
-static int sdma_v5_2_reset_queue(struct amdgpu_ring *ring,
-				 unsigned int vmid,
-				 struct amdgpu_fence *timedout_fence)
-{
-	struct amdgpu_device *adev = ring->adev;
-	int r;
-
-	if (ring->me >= adev->sdma.num_instances) {
-		dev_err(adev->dev, "sdma instance not found\n");
-		return -EINVAL;
-	}
-
-	amdgpu_ring_reset_helper_begin(ring, timedout_fence);
-
-	amdgpu_amdkfd_suspend(adev, true);
-	r = amdgpu_sdma_reset_engine(adev, ring->me, true);
-	amdgpu_amdkfd_resume(adev, true);
-	if (r)
-		return r;
-
-	return amdgpu_ring_reset_helper_end(ring, timedout_fence);
-}
-
 static int sdma_v5_2_stop_queue(struct amdgpu_ring *ring)
 {
 	u32 f32_cntl, freeze, cntl, stat1_reg;
@@ -1929,7 +1906,7 @@ static const struct amdgpu_ring_funcs sdma_v5_2_ring_funcs = {
 	.emit_reg_write_reg_wait = sdma_v5_2_ring_emit_reg_write_reg_wait,
 	.init_cond_exec = sdma_v5_2_ring_init_cond_exec,
 	.preempt_ib = sdma_v5_2_ring_preempt_ib,
-	.reset = sdma_v5_2_reset_queue,
+	.reset = amdgpu_sdma_reset_queue_legacy,
 };
 
 static void sdma_v5_2_set_ring_funcs(struct amdgpu_device *adev)
-- 
2.55.0