drm/amdgpu: fix for suspend/resume sequence under sriov

- clear kiq ring after suspend/resume under sriov to aviod kiq ring
test failure
- update irq after resume to fix kiq interrput loss

Signed-off-by: Victor Zhao <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: vizhao

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

@@ -4197,6 +4197,8 @@ int amdgpu_device_resume(struct drm_device *dev, bool fbcon)
 	}
 
 	/* Make sure IB tests flushed */
+	if (amdgpu_sriov_vf(adev))
+		amdgpu_irq_gpu_reset_resume_helper(adev);
 	flush_delayed_work(&adev->delayed_init_work);
 
 	if (adev->in_s0ix) {

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -6909,6 +6909,8 @@ static int gfx_v10_0_kiq_init_queue(struct amdgpu_ring *ring)
 		mutex_unlock(&adev->srbm_mutex);
 	} else {
 		memset((void *)mqd, 0, sizeof(*mqd));
+		if (amdgpu_sriov_vf(adev) && adev->in_suspend)
+			amdgpu_ring_clear_ring(ring);
 		mutex_lock(&adev->srbm_mutex);
 		nv_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
 		amdgpu_ring_init_mqd(ring);

drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c

@@ -4004,6 +4004,8 @@ static int gfx_v11_0_kiq_init_queue(struct amdgpu_ring *ring)
 		mutex_unlock(&adev->srbm_mutex);
 	} else {
 		memset((void *)mqd, 0, sizeof(*mqd));
+		if (amdgpu_sriov_vf(adev) && adev->in_suspend)
+			amdgpu_ring_clear_ring(ring);
 		mutex_lock(&adev->srbm_mutex);
 		soc21_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
 		amdgpu_ring_init_mqd(ring);

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -4643,6 +4643,8 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring)
 		memset((void *)mqd, 0, sizeof(struct vi_mqd_allocation));
 		((struct vi_mqd_allocation *)mqd)->dynamic_cu_mask = 0xFFFFFFFF;
 		((struct vi_mqd_allocation *)mqd)->dynamic_rb_mask = 0xFFFFFFFF;
+		if (amdgpu_sriov_vf(adev) && adev->in_suspend)
+			amdgpu_ring_clear_ring(ring);
 		mutex_lock(&adev->srbm_mutex);
 		vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
 		gfx_v8_0_mqd_init(ring);

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -3581,6 +3581,8 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring *ring)
 		memset((void *)mqd, 0, sizeof(struct v9_mqd_allocation));
 		((struct v9_mqd_allocation *)mqd)->dynamic_cu_mask = 0xFFFFFFFF;
 		((struct v9_mqd_allocation *)mqd)->dynamic_rb_mask = 0xFFFFFFFF;
+		if (amdgpu_sriov_vf(adev) && adev->in_suspend)
+			amdgpu_ring_clear_ring(ring);
 		mutex_lock(&adev->srbm_mutex);
 		soc15_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
 		gfx_v9_0_mqd_init(ring);