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1 | /* |
2 | * Copyright(c) 2016 Intel Corporation. | |
3 | * | |
4 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
5 | * redistributing this file, you may do so under either license. | |
6 | * | |
7 | * GPL LICENSE SUMMARY | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of version 2 of the GNU General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * BSD LICENSE | |
19 | * | |
20 | * Redistribution and use in source and binary forms, with or without | |
21 | * modification, are permitted provided that the following conditions | |
22 | * are met: | |
23 | * | |
24 | * - Redistributions of source code must retain the above copyright | |
25 | * notice, this list of conditions and the following disclaimer. | |
26 | * - Redistributions in binary form must reproduce the above copyright | |
27 | * notice, this list of conditions and the following disclaimer in | |
28 | * the documentation and/or other materials provided with the | |
29 | * distribution. | |
30 | * - Neither the name of Intel Corporation nor the names of its | |
31 | * contributors may be used to endorse or promote products derived | |
32 | * from this software without specific prior written permission. | |
33 | * | |
34 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
35 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
36 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
37 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
38 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
39 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
41 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
42 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
43 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
45 | * | |
46 | */ | |
47 | ||
48 | #ifndef HFI1_VERBS_TXREQ_H | |
49 | #define HFI1_VERBS_TXREQ_H | |
50 | ||
51 | #include <linux/types.h> | |
52 | #include <linux/slab.h> | |
53 | ||
54 | #include "verbs.h" | |
55 | #include "sdma_txreq.h" | |
56 | #include "iowait.h" | |
57 | ||
58 | struct verbs_txreq { | |
59 | struct hfi1_pio_header phdr; | |
60 | struct sdma_txreq txreq; | |
61 | struct rvt_qp *qp; | |
62 | struct rvt_swqe *wqe; | |
63 | struct rvt_mregion *mr; | |
64 | struct rvt_sge_state *ss; | |
65 | struct sdma_engine *sde; | |
711e104d | 66 | struct send_context *psc; |
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67 | u16 hdr_dwords; |
68 | }; | |
69 | ||
70 | struct hfi1_ibdev; | |
71 | struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev, | |
72 | struct rvt_qp *qp); | |
73 | ||
74 | static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev, | |
75 | struct rvt_qp *qp) | |
2aee309d | 76 | __must_hold(&qp->slock) |
45842abb MM |
77 | { |
78 | struct verbs_txreq *tx; | |
711e104d | 79 | struct hfi1_qp_priv *priv = qp->priv; |
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80 | |
81 | tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC); | |
82 | if (unlikely(!tx)) { | |
83 | /* call slow path to get the lock */ | |
84 | tx = __get_txreq(dev, qp); | |
85 | if (IS_ERR(tx)) | |
86 | return tx; | |
87 | } | |
88 | tx->qp = qp; | |
89 | tx->mr = NULL; | |
711e104d MM |
90 | tx->sde = priv->s_sde; |
91 | tx->psc = priv->s_sendcontext; | |
92 | /* so that we can test if the sdma decriptors are there */ | |
93 | tx->txreq.num_desc = 0; | |
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94 | return tx; |
95 | } | |
96 | ||
14553ca1 MM |
97 | static inline struct sdma_txreq *get_sdma_txreq(struct verbs_txreq *tx) |
98 | { | |
99 | return &tx->txreq; | |
100 | } | |
101 | ||
711e104d MM |
102 | static inline struct verbs_txreq *get_waiting_verbs_txreq(struct rvt_qp *qp) |
103 | { | |
104 | struct sdma_txreq *stx; | |
105 | struct hfi1_qp_priv *priv = qp->priv; | |
106 | ||
107 | stx = iowait_get_txhead(&priv->s_iowait); | |
108 | if (stx) | |
109 | return container_of(stx, struct verbs_txreq, txreq); | |
110 | return NULL; | |
111 | } | |
112 | ||
45842abb MM |
113 | void hfi1_put_txreq(struct verbs_txreq *tx); |
114 | int verbs_txreq_init(struct hfi1_ibdev *dev); | |
115 | void verbs_txreq_exit(struct hfi1_ibdev *dev); | |
116 | ||
117 | #endif /* HFI1_VERBS_TXREQ_H */ |