[PATCH 21/42] drm/amdgpu/userq: add mes userq reset callback

[Alex Deucher]

Enable per queue reset for MES managed queues.

Signed-off-by: Alex Deucher <alexander.deuc...@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 14db2124ff81c..4f285a8218ddb 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
@@ -177,6 +177,26 @@ static int mes_userq_unmap(struct amdgpu_usermode_queue 
*queue)
        return r;
 }
 
+static int mes_userq_reset(struct amdgpu_usermode_queue *queue)
+{
+       struct amdgpu_userq_mgr *uq_mgr = queue->userq_mgr;
+       struct amdgpu_device *adev = uq_mgr->adev;
+       struct mes_reset_queue_input queue_input;
+       int r;
+
+       /* XXX: add a FW version check for SDMA per queue reset */
+       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)
+               return r;
+       return mes_userq_unmap(queue);
+}
+
 static int mes_userq_create_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
                                      struct amdgpu_usermode_queue *queue,
                                      struct drm_amdgpu_userq_in *mqd_user)
@@ -528,4 +548,5 @@ const struct amdgpu_userq_funcs userq_mes_funcs = {
        .detect_and_reset = mes_userq_detect_and_reset,
        .preempt = mes_userq_preempt,
        .restore = mes_userq_restore,
+       .reset = mes_userq_reset,
 };
-- 
2.54.0