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1 | #ifndef _QP_H |
2 | #define _QP_H | |
3 | /* | |
05d6ac1d | 4 | * Copyright(c) 2015, 2016 Intel Corporation. |
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5 | * |
6 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
7 | * redistributing this file, you may do so under either license. | |
8 | * | |
9 | * GPL LICENSE SUMMARY | |
10 | * | |
77241056 MM |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * BSD LICENSE | |
21 | * | |
77241056 MM |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * | |
26 | * - Redistributions of source code must retain the above copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * - Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in | |
30 | * the documentation and/or other materials provided with the | |
31 | * distribution. | |
32 | * - Neither the name of Intel Corporation nor the names of its | |
33 | * contributors may be used to endorse or promote products derived | |
34 | * from this software without specific prior written permission. | |
35 | * | |
36 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
37 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
38 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
39 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
40 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
41 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
42 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
43 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
44 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
45 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
46 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
47 | * | |
48 | */ | |
49 | ||
50 | #include <linux/hash.h> | |
1c4b7d97 | 51 | #include <rdma/rdmavt_qp.h> |
77241056 | 52 | #include "verbs.h" |
13a69f52 | 53 | #include "sdma.h" |
77241056 | 54 | |
a2c2d608 DD |
55 | extern unsigned int hfi1_qp_table_size; |
56 | ||
895420dd DD |
57 | /* |
58 | * free_ahg - clear ahg from QP | |
13a69f52 | 59 | */ |
895420dd | 60 | static inline void clear_ahg(struct rvt_qp *qp) |
13a69f52 | 61 | { |
4c6829c5 DD |
62 | struct hfi1_qp_priv *priv = qp->priv; |
63 | ||
64 | priv->s_hdr->ahgcount = 0; | |
54d10c1e | 65 | qp->s_flags &= ~(RVT_S_AHG_VALID | RVT_S_AHG_CLEAR); |
4c6829c5 DD |
66 | if (priv->s_sde && qp->s_ahgidx >= 0) |
67 | sdma_ahg_free(priv->s_sde, qp->s_ahgidx); | |
13a69f52 | 68 | qp->s_ahgidx = -1; |
13a69f52 MM |
69 | } |
70 | ||
77241056 MM |
71 | /** |
72 | * hfi1_compute_aeth - compute the AETH (syndrome + MSN) | |
73 | * @qp: the queue pair to compute the AETH for | |
74 | * | |
75 | * Returns the AETH. | |
76 | */ | |
895420dd | 77 | __be32 hfi1_compute_aeth(struct rvt_qp *qp); |
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78 | |
79 | /** | |
80 | * hfi1_create_qp - create a queue pair for a device | |
81 | * @ibpd: the protection domain who's device we create the queue pair for | |
82 | * @init_attr: the attributes of the queue pair | |
83 | * @udata: user data for libibverbs.so | |
84 | * | |
85 | * Returns the queue pair on success, otherwise returns an errno. | |
86 | * | |
87 | * Called by the ib_create_qp() core verbs function. | |
88 | */ | |
89 | struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd, | |
90 | struct ib_qp_init_attr *init_attr, | |
91 | struct ib_udata *udata); | |
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92 | /** |
93 | * hfi1_get_credit - flush the send work queue of a QP | |
94 | * @qp: the qp who's send work queue to flush | |
95 | * @aeth: the Acknowledge Extended Transport Header | |
96 | * | |
97 | * The QP s_lock should be held. | |
98 | */ | |
895420dd | 99 | void hfi1_get_credit(struct rvt_qp *qp, u32 aeth); |
77241056 | 100 | |
77241056 | 101 | /** |
92d207f3 | 102 | * hfi1_qp_wakeup - wake up on the indicated event |
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103 | * @qp: the QP |
104 | * @flag: flag the qp on which the qp is stalled | |
105 | */ | |
895420dd | 106 | void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); |
77241056 | 107 | |
895420dd | 108 | struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); |
35f6befc | 109 | struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); |
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110 | |
111 | struct qp_iter; | |
112 | ||
113 | /** | |
92d207f3 | 114 | * qp_iter_init - initialize the iterator for the qp hash list |
77241056 MM |
115 | * @dev: the hfi1_ibdev |
116 | */ | |
117 | struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev); | |
118 | ||
119 | /** | |
92d207f3 | 120 | * qp_iter_next - Find the next qp in the hash list |
77241056 MM |
121 | * @iter: the iterator for the qp hash list |
122 | */ | |
123 | int qp_iter_next(struct qp_iter *iter); | |
124 | ||
125 | /** | |
92d207f3 | 126 | * qp_iter_print - print the qp information to seq_file |
77241056 MM |
127 | * @s: the seq_file to emit the qp information on |
128 | * @iter: the iterator for the qp hash list | |
129 | */ | |
130 | void qp_iter_print(struct seq_file *s, struct qp_iter *iter); | |
131 | ||
132 | /** | |
133 | * qp_comm_est - handle trap with QP established | |
134 | * @qp: the QP | |
135 | */ | |
895420dd | 136 | void qp_comm_est(struct rvt_qp *qp); |
77241056 | 137 | |
46a80d62 MM |
138 | void _hfi1_schedule_send(struct rvt_qp *qp); |
139 | void hfi1_schedule_send(struct rvt_qp *qp); | |
0a226edd | 140 | |
895420dd | 141 | void hfi1_migrate_qp(struct rvt_qp *qp); |
c2f3ffb0 | 142 | |
a2c2d608 DD |
143 | /* |
144 | * Functions provided by hfi1 driver for rdmavt to use | |
145 | */ | |
146 | void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, | |
147 | gfp_t gfp); | |
148 | void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); | |
149 | unsigned free_all_qps(struct rvt_dev_info *rdi); | |
150 | void notify_qp_reset(struct rvt_qp *qp); | |
ec4274f1 DD |
151 | int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
152 | struct ib_qp_attr *attr); | |
153 | void flush_qp_waiters(struct rvt_qp *qp); | |
154 | void notify_error_qp(struct rvt_qp *qp); | |
155 | void stop_send_queue(struct rvt_qp *qp); | |
156 | void quiesce_qp(struct rvt_qp *qp); | |
157 | u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); | |
158 | int mtu_to_path_mtu(u32 mtu); | |
0ec79e87 | 159 | void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); |
77241056 | 160 | #endif /* _QP_H */ |