1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
5 */
6#ifndef _VNIC_CQ_COPY_H_
7#define _VNIC_CQ_COPY_H_
8
9#include "fcpio.h"
10
11static inline unsigned int vnic_cq_copy_service(
12	struct vnic_cq *cq,
13	int (*q_service)(struct vnic_dev *vdev,
14			 unsigned int index,
15			 struct fcpio_fw_req *desc),
16	unsigned int work_to_do)
17
18{
19	struct fcpio_fw_req *desc;
20	unsigned int work_done = 0;
21	u8 color;
22
23	desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
24		cq->ring.desc_size * cq->to_clean);
25	fcpio_color_dec(desc, &color);
26
27	while (color != cq->last_color) {
28
29		if ((*q_service)(cq->vdev, cq->index, desc))
30			break;
31
32		cq->to_clean++;
33		if (cq->to_clean == cq->ring.desc_count) {
34			cq->to_clean = 0;
35			cq->last_color = cq->last_color ? 0 : 1;
36		}
37
38		desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
39			cq->ring.desc_size * cq->to_clean);
40		fcpio_color_dec(desc, &color);
41
42		work_done++;
43		if (work_done >= work_to_do)
44			break;
45	}
46
47	return work_done;
48}
49
50#endif /* _VNIC_CQ_COPY_H_ */
51