This patch allocates a doorbell slot in the bar, for the usermode queue.
We are using the unique queue-id to get this slot from MES.
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
index a91cc304cb9e..b566ce4cb7f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
@@ -50,6 +50,25 @@ amdgpu_userqueue_remove_index(struct amdgpu_device *adev, struct amdgpu_usermode
ida_simple_remove(&uqg->ida, queue->queue_id);
}
+static int
+amdgpu_userqueue_get_doorbell(struct amdgpu_device *adev,
+ struct amdgpu_usermode_queue *queue)
+{
+ int r;
+ unsigned int doorbell_index;
+
+ r = amdgpu_mes_alloc_process_doorbells(adev, &doorbell_index);
+ if (r < 0) {
+ DRM_ERROR("Failed to allocate doorbell for user queue\n");
+ return r;
+ }
+
+ /* We are using qnique queue-id to get doorbell here */
+ queue->doorbell_index = amdgpu_mes_get_doorbell_dw_offset_in_bar(adev,
+ doorbell_index, queue->queue_id);
+ return 0;
+}
+
static void
amdgpu_userqueue_setup_mqd(struct amdgpu_device *adev, struct amdgpu_usermode_queue *queue)
{
@@ -257,12 +276,21 @@ int amdgpu_userqueue_create(struct amdgpu_device *adev, struct drm_file *filp,
goto free_queue;
}
+ r = amdgpu_userqueue_get_doorbell(adev, queue);
+ if (r) {
+ DRM_ERROR("Failed to create doorbell for queue\n");
+ goto free_mqd;
+ }
+
ctx->userq = queue;
args->out.q_id = queue->queue_id;
args->out.flags = 0;
mutex_unlock(&adev->userq.userq_mutex);
return 0;
+free_mqd:
+ amdgpu_userqueue_destroy_mqd(queue);
+
free_queue:
amdgpu_userqueue_remove_index(adev, queue);
mutex_unlock(&adev->userq.userq_mutex);
--
2.34.1
