From 5b7a59de4845460a313d93d4839258bfb982357c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 3 Jun 2024 13:35:05 -0400 Subject: drm/amdgpu/mes: add API for user queue reset Add API for resetting user queues. Acked-by: Vitaly Prosyak Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 43 +++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index c598c3edff7e..04a4f0dfec15 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -793,6 +793,49 @@ int amdgpu_mes_remove_hw_queue(struct amdgpu_device *adev, int queue_id) return 0; } +int amdgpu_mes_reset_hw_queue(struct amdgpu_device *adev, int queue_id) +{ + unsigned long flags; + struct amdgpu_mes_queue *queue; + struct amdgpu_mes_gang *gang; + struct mes_reset_queue_input queue_input; + int r; + + /* + * Avoid taking any other locks under MES lock to avoid circular + * lock dependencies. + */ + amdgpu_mes_lock(&adev->mes); + + /* remove the mes gang from idr list */ + spin_lock_irqsave(&adev->mes.queue_id_lock, flags); + + queue = idr_find(&adev->mes.queue_id_idr, queue_id); + if (!queue) { + spin_unlock_irqrestore(&adev->mes.queue_id_lock, flags); + amdgpu_mes_unlock(&adev->mes); + DRM_ERROR("queue id %d doesn't exist\n", queue_id); + return -EINVAL; + } + spin_unlock_irqrestore(&adev->mes.queue_id_lock, flags); + + DRM_DEBUG("try to reset queue, doorbell off = 0x%llx\n", + queue->doorbell_off); + + gang = queue->gang; + queue_input.doorbell_offset = queue->doorbell_off; + queue_input.gang_context_addr = gang->gang_ctx_gpu_addr; + + r = adev->mes.funcs->reset_hw_queue(&adev->mes, &queue_input); + if (r) + DRM_ERROR("failed to reset hardware queue, queue id = %d\n", + queue_id); + + amdgpu_mes_unlock(&adev->mes); + + return 0; +} + int amdgpu_mes_map_legacy_queue(struct amdgpu_device *adev, struct amdgpu_ring *ring) { -- cgit v1.2.3-70-g09d2