[PATCH 5/9] drm/amdgpu: add mes userq reset callback

[Alex Deucher]

Used to reset a hung queue.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_userqueue.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c b/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
index d6f50b13e2ba0..650fdb68db127 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
@@ -347,9 +347,30 @@ mes_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr,
 	amdgpu_userq_destroy_object(uq_mgr, &queue->mqd);
 }
 
+static int mes_userq_reset(struct amdgpu_userq_mgr *uq_mgr,
+			   struct amdgpu_usermode_queue *queue)
+{
+	struct amdgpu_device *adev = uq_mgr->adev;
+	struct mes_reset_queue_input queue_input;
+	int r;
+
+	memset(&queue_input, 0x0, sizeof(struct mes_reset_queue_input));
+
+	queue_input.doorbell_offset = queue->doorbell_index;
+	queue_input.queue_type = queue->queue_type;
+
+	amdgpu_mes_lock(&adev->mes);
+	r = adev->mes.funcs->reset_hw_queue(&adev->mes, &queue_input);
+	amdgpu_mes_unlock(&adev->mes);
+	if (r)
+		dev_err(adev->dev, "Failed to reset queue, err (%d)\n", r);
+	return r;
+}
+
 const struct amdgpu_userq_funcs userq_mes_funcs = {
 	.mqd_create = mes_userq_mqd_create,
 	.mqd_destroy = mes_userq_mqd_destroy,
 	.unmap = mes_userq_unmap,
 	.map = mes_userq_map,
+	.reset = mes_userq_reset,
 };
-- 
2.49.0