1/*
2 * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
3 *
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
16 */
17
18#ifndef _VNIC_CQ_FW_H_
19#define _VNIC_CQ_FW_H_
20
21#include "snic_fwint.h"
22
23static inline unsigned int
24vnic_cq_fw_service(struct vnic_cq *cq,
25		   int (*q_service)(struct vnic_dev *vdev,
26				    unsigned int index,
27				    struct snic_fw_req *desc),
28		   unsigned int work_to_do)
29
30{
31	struct snic_fw_req *desc;
32	unsigned int work_done = 0;
33	u8 color;
34
35	desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
36		cq->ring.desc_size * cq->to_clean);
37	snic_color_dec(desc, &color);
38
39	while (color != cq->last_color) {
40
41		if ((*q_service)(cq->vdev, cq->index, desc))
42			break;
43
44		cq->to_clean++;
45		if (cq->to_clean == cq->ring.desc_count) {
46			cq->to_clean = 0;
47			cq->last_color = cq->last_color ? 0 : 1;
48		}
49
50		desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
51			cq->ring.desc_size * cq->to_clean);
52		snic_color_dec(desc, &color);
53
54		work_done++;
55		if (work_done >= work_to_do)
56			break;
57	}
58
59	return work_done;
60}
61
62#endif /* _VNIC_CQ_FW_H_ */
63