1 #ifndef DEF_RDMAVT_INCCQ_H
2 #define DEF_RDMAVT_INCCQ_H
5 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
7 * This file is provided under a dual BSD/GPLv2 license. When using or
8 * redistributing this file, you may do so under either license.
12 * Copyright(c) 2016 Intel Corporation.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of version 2 of the GNU General Public License as
16 * published by the Free Software Foundation.
18 * This program is distributed in the hope that it will be useful, but
19 * WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * General Public License for more details.
25 * Copyright(c) 2015 Intel Corporation.
27 * Redistribution and use in source and binary forms, with or without
28 * modification, are permitted provided that the following conditions
31 * - Redistributions of source code must retain the above copyright
32 * notice, this list of conditions and the following disclaimer.
33 * - Redistributions in binary form must reproduce the above copyright
34 * notice, this list of conditions and the following disclaimer in
35 * the documentation and/or other materials provided with the
37 * - Neither the name of Intel Corporation nor the names of its
38 * contributors may be used to endorse or promote products derived
39 * from this software without specific prior written permission.
41 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
42 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
43 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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51 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 #include <linux/kthread.h>
57 #include <rdma/ib_user_verbs.h>
60 * Define an ib_cq_notify value that is not valid so we know when CQ
61 * notifications are armed.
63 #define RVT_CQ_NONE (IB_CQ_NEXT_COMP + 1)
66 * This structure is used to contain the head pointer, tail pointer,
67 * and completion queue entries as a single memory allocation so
68 * it can be mmap'ed into user space.
71 u32 head; /* index of next entry to fill */
72 u32 tail; /* index of next ib_poll_cq() entry */
74 /* these are actually size ibcq.cqe + 1 */
75 struct ib_uverbs_wc uqueue[0];
76 struct ib_wc kqueue[0];
81 * The completion queue structure.
85 struct kthread_work comptask;
86 spinlock_t lock; /* protect changes in this struct */
89 struct rvt_dev_info *rdi;
90 struct rvt_cq_wc *queue;
91 struct rvt_mmap_info *ip;
94 static inline struct rvt_cq *ibcq_to_rvtcq(struct ib_cq *ibcq)
96 return container_of(ibcq, struct rvt_cq, ibcq);
99 void rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited);
101 #endif /* DEF_RDMAVT_INCCQH */