1// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
 2// Copyright (c) 2019 Hisilicon Limited.
 3
 4#include "hnae3.h"
 5#include "hns_roce_device.h"
 6#include "hns_roce_cmd.h"
 7#include "hns_roce_hw_v2.h"
 8
 9int hns_roce_v2_query_cqc_info(struct hns_roce_dev *hr_dev, u32 cqn,
10			       int *buffer)
11{
12	struct hns_roce_v2_cq_context *cq_context;
13	struct hns_roce_cmd_mailbox *mailbox;
14	int ret;
15
16	mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
17	if (IS_ERR(mailbox))
18		return PTR_ERR(mailbox);
19
20	cq_context = mailbox->buf;
21	ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, cqn, 0,
22				HNS_ROCE_CMD_QUERY_CQC,
23				HNS_ROCE_CMD_TIMEOUT_MSECS);
24	if (ret) {
25		dev_err(hr_dev->dev, "QUERY cqc cmd process error\n");
26		goto err_mailbox;
27	}
28
29	memcpy(buffer, cq_context, sizeof(*cq_context));
30
31err_mailbox:
32	hns_roce_free_cmd_mailbox(hr_dev, mailbox);
33
34	return ret;
35}