1/*
2 * This file is part of the Chelsio T6 Ethernet driver for Linux.
3 *
4 * Copyright (c) 2017-2018 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses.  You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 *     Redistribution and use in source and binary forms, with or
13 *     without modification, are permitted provided that the following
14 *     conditions are met:
15 *
16 *      - Redistributions of source code must retain the above
17 *        copyright notice, this list of conditions and the following
18 *        disclaimer.
19 *
20 *      - Redistributions in binary form must reproduce the above
21 *        copyright notice, this list of conditions and the following
22 *        disclaimer in the documentation and/or other materials
23 *        provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef __CXGB4_SRQ_H
36#define __CXGB4_SRQ_H
37
38struct adapter;
39struct cpl_srq_table_rpl;
40
41#define SRQ_WAIT_TO	(HZ * 5)
42
43struct srq_entry {
44	u8 valid;
45	u8 idx;
46	u8 qlen;
47	u16 pdid;
48	u16 cur_msn;
49	u16 max_msn;
50	u32 qbase;
51};
52
53struct srq_data {
54	unsigned int srq_size;
55	struct srq_entry *entryp;
56	struct completion comp;
57	struct mutex lock; /* generic mutex for srq data */
58};
59
60struct srq_data *t4_init_srq(int srq_size);
61int cxgb4_get_srq_entry(struct net_device *dev,
62			int srq_idx, struct srq_entry *entryp);
63void do_srq_table_rpl(struct adapter *adap,
64		      const struct cpl_srq_table_rpl *rpl);
65#endif  /* __CXGB4_SRQ_H */
66