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 */
66