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
38 struct adapter;
39 struct cpl_srq_table_rpl;
40
41 #define SRQ_WAIT_TO (HZ * 5)
42
43 struct 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
53 struct 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
60 struct srq_data *t4_init_srq(int srq_size);
61 int cxgb4_get_srq_entry(struct net_device *dev,
62 int srq_idx, struct srq_entry *entryp);
63 void do_srq_table_rpl(struct adapter *adap,
64 const struct cpl_srq_table_rpl *rpl);
65 #endif /* __CXGB4_SRQ_H */