1 #ifndef _QP_H 2 #define _QP_H 3 /* 4 * Copyright(c) 2015, 2016 Intel Corporation. 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 * 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 * 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> 51 #include <rdma/rdmavt_qp.h> 52 #include "verbs.h" 53 #include "sdma.h" 54 55 extern unsigned int hfi1_qp_table_size; 56 57 extern const struct rvt_operation_params hfi1_post_parms[]; 58 59 /* 60 * free_ahg - clear ahg from QP 61 */ 62 static inline void clear_ahg(struct rvt_qp *qp) 63 { 64 struct hfi1_qp_priv *priv = qp->priv; 65 66 priv->s_ahg->ahgcount = 0; 67 qp->s_flags &= ~(RVT_S_AHG_VALID | RVT_S_AHG_CLEAR); 68 if (priv->s_sde && qp->s_ahgidx >= 0) 69 sdma_ahg_free(priv->s_sde, qp->s_ahgidx); 70 qp->s_ahgidx = -1; 71 } 72 73 /** 74 * hfi1_create_qp - create a queue pair for a device 75 * @ibpd: the protection domain who's device we create the queue pair for 76 * @init_attr: the attributes of the queue pair 77 * @udata: user data for libibverbs.so 78 * 79 * Returns the queue pair on success, otherwise returns an errno. 80 * 81 * Called by the ib_create_qp() core verbs function. 82 */ 83 struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd, 84 struct ib_qp_init_attr *init_attr, 85 struct ib_udata *udata); 86 87 /** 88 * hfi1_qp_wakeup - wake up on the indicated event 89 * @qp: the QP 90 * @flag: flag the qp on which the qp is stalled 91 */ 92 void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); 93 94 struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); 95 struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); 96 97 struct qp_iter; 98 99 /** 100 * qp_iter_init - initialize the iterator for the qp hash list 101 * @dev: the hfi1_ibdev 102 */ 103 struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev); 104 105 /** 106 * qp_iter_next - Find the next qp in the hash list 107 * @iter: the iterator for the qp hash list 108 */ 109 int qp_iter_next(struct qp_iter *iter); 110 111 /** 112 * qp_iter_print - print the qp information to seq_file 113 * @s: the seq_file to emit the qp information on 114 * @iter: the iterator for the qp hash list 115 */ 116 void qp_iter_print(struct seq_file *s, struct qp_iter *iter); 117 118 void _hfi1_schedule_send(struct rvt_qp *qp); 119 void hfi1_schedule_send(struct rvt_qp *qp); 120 121 void hfi1_migrate_qp(struct rvt_qp *qp); 122 123 /* 124 * Functions provided by hfi1 driver for rdmavt to use 125 */ 126 void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp); 127 void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 128 unsigned free_all_qps(struct rvt_dev_info *rdi); 129 void notify_qp_reset(struct rvt_qp *qp); 130 int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 131 struct ib_qp_attr *attr); 132 void flush_qp_waiters(struct rvt_qp *qp); 133 void notify_error_qp(struct rvt_qp *qp); 134 void stop_send_queue(struct rvt_qp *qp); 135 void quiesce_qp(struct rvt_qp *qp); 136 u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 137 int mtu_to_path_mtu(u32 mtu); 138 void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); 139 #endif /* _QP_H */ 140