1f48ad614SDennis Dalessandro #ifndef _QP_H 2f48ad614SDennis Dalessandro #define _QP_H 3f48ad614SDennis Dalessandro /* 4f48ad614SDennis Dalessandro * Copyright(c) 2015, 2016 Intel Corporation. 5f48ad614SDennis Dalessandro * 6f48ad614SDennis Dalessandro * This file is provided under a dual BSD/GPLv2 license. When using or 7f48ad614SDennis Dalessandro * redistributing this file, you may do so under either license. 8f48ad614SDennis Dalessandro * 9f48ad614SDennis Dalessandro * GPL LICENSE SUMMARY 10f48ad614SDennis Dalessandro * 11f48ad614SDennis Dalessandro * This program is free software; you can redistribute it and/or modify 12f48ad614SDennis Dalessandro * it under the terms of version 2 of the GNU General Public License as 13f48ad614SDennis Dalessandro * published by the Free Software Foundation. 14f48ad614SDennis Dalessandro * 15f48ad614SDennis Dalessandro * This program is distributed in the hope that it will be useful, but 16f48ad614SDennis Dalessandro * WITHOUT ANY WARRANTY; without even the implied warranty of 17f48ad614SDennis Dalessandro * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18f48ad614SDennis Dalessandro * General Public License for more details. 19f48ad614SDennis Dalessandro * 20f48ad614SDennis Dalessandro * BSD LICENSE 21f48ad614SDennis Dalessandro * 22f48ad614SDennis Dalessandro * Redistribution and use in source and binary forms, with or without 23f48ad614SDennis Dalessandro * modification, are permitted provided that the following conditions 24f48ad614SDennis Dalessandro * are met: 25f48ad614SDennis Dalessandro * 26f48ad614SDennis Dalessandro * - Redistributions of source code must retain the above copyright 27f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer. 28f48ad614SDennis Dalessandro * - Redistributions in binary form must reproduce the above copyright 29f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer in 30f48ad614SDennis Dalessandro * the documentation and/or other materials provided with the 31f48ad614SDennis Dalessandro * distribution. 32f48ad614SDennis Dalessandro * - Neither the name of Intel Corporation nor the names of its 33f48ad614SDennis Dalessandro * contributors may be used to endorse or promote products derived 34f48ad614SDennis Dalessandro * from this software without specific prior written permission. 35f48ad614SDennis Dalessandro * 36f48ad614SDennis Dalessandro * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 37f48ad614SDennis Dalessandro * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 38f48ad614SDennis Dalessandro * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 39f48ad614SDennis Dalessandro * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 40f48ad614SDennis Dalessandro * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41f48ad614SDennis Dalessandro * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42f48ad614SDennis Dalessandro * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 43f48ad614SDennis Dalessandro * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 44f48ad614SDennis Dalessandro * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 45f48ad614SDennis Dalessandro * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 46f48ad614SDennis Dalessandro * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 47f48ad614SDennis Dalessandro * 48f48ad614SDennis Dalessandro */ 49f48ad614SDennis Dalessandro 50f48ad614SDennis Dalessandro #include <linux/hash.h> 51f48ad614SDennis Dalessandro #include <rdma/rdmavt_qp.h> 52f48ad614SDennis Dalessandro #include "verbs.h" 53f48ad614SDennis Dalessandro #include "sdma.h" 54f48ad614SDennis Dalessandro 55f48ad614SDennis Dalessandro extern unsigned int hfi1_qp_table_size; 56f48ad614SDennis Dalessandro 571ac57c50SMike Marciniszyn extern const struct rvt_operation_params hfi1_post_parms[]; 581ac57c50SMike Marciniszyn 59f48ad614SDennis Dalessandro /* 60f48ad614SDennis Dalessandro * free_ahg - clear ahg from QP 61f48ad614SDennis Dalessandro */ 62f48ad614SDennis Dalessandro static inline void clear_ahg(struct rvt_qp *qp) 63f48ad614SDennis Dalessandro { 64f48ad614SDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv; 65f48ad614SDennis Dalessandro 66f48ad614SDennis Dalessandro priv->s_hdr->ahgcount = 0; 67f48ad614SDennis Dalessandro qp->s_flags &= ~(RVT_S_AHG_VALID | RVT_S_AHG_CLEAR); 68f48ad614SDennis Dalessandro if (priv->s_sde && qp->s_ahgidx >= 0) 69f48ad614SDennis Dalessandro sdma_ahg_free(priv->s_sde, qp->s_ahgidx); 70f48ad614SDennis Dalessandro qp->s_ahgidx = -1; 71f48ad614SDennis Dalessandro } 72f48ad614SDennis Dalessandro 73f48ad614SDennis Dalessandro /** 74f48ad614SDennis Dalessandro * hfi1_compute_aeth - compute the AETH (syndrome + MSN) 75f48ad614SDennis Dalessandro * @qp: the queue pair to compute the AETH for 76f48ad614SDennis Dalessandro * 77f48ad614SDennis Dalessandro * Returns the AETH. 78f48ad614SDennis Dalessandro */ 79f48ad614SDennis Dalessandro __be32 hfi1_compute_aeth(struct rvt_qp *qp); 80f48ad614SDennis Dalessandro 81f48ad614SDennis Dalessandro /** 82f48ad614SDennis Dalessandro * hfi1_create_qp - create a queue pair for a device 83f48ad614SDennis Dalessandro * @ibpd: the protection domain who's device we create the queue pair for 84f48ad614SDennis Dalessandro * @init_attr: the attributes of the queue pair 85f48ad614SDennis Dalessandro * @udata: user data for libibverbs.so 86f48ad614SDennis Dalessandro * 87f48ad614SDennis Dalessandro * Returns the queue pair on success, otherwise returns an errno. 88f48ad614SDennis Dalessandro * 89f48ad614SDennis Dalessandro * Called by the ib_create_qp() core verbs function. 90f48ad614SDennis Dalessandro */ 91f48ad614SDennis Dalessandro struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd, 92f48ad614SDennis Dalessandro struct ib_qp_init_attr *init_attr, 93f48ad614SDennis Dalessandro struct ib_udata *udata); 94f48ad614SDennis Dalessandro /** 95f48ad614SDennis Dalessandro * hfi1_get_credit - flush the send work queue of a QP 96f48ad614SDennis Dalessandro * @qp: the qp who's send work queue to flush 97f48ad614SDennis Dalessandro * @aeth: the Acknowledge Extended Transport Header 98f48ad614SDennis Dalessandro * 99f48ad614SDennis Dalessandro * The QP s_lock should be held. 100f48ad614SDennis Dalessandro */ 101f48ad614SDennis Dalessandro void hfi1_get_credit(struct rvt_qp *qp, u32 aeth); 102f48ad614SDennis Dalessandro 103f48ad614SDennis Dalessandro /** 104f48ad614SDennis Dalessandro * hfi1_qp_wakeup - wake up on the indicated event 105f48ad614SDennis Dalessandro * @qp: the QP 106f48ad614SDennis Dalessandro * @flag: flag the qp on which the qp is stalled 107f48ad614SDennis Dalessandro */ 108f48ad614SDennis Dalessandro void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); 109f48ad614SDennis Dalessandro 110f48ad614SDennis Dalessandro struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); 111f48ad614SDennis Dalessandro struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); 112f48ad614SDennis Dalessandro 113f48ad614SDennis Dalessandro struct qp_iter; 114f48ad614SDennis Dalessandro 115f48ad614SDennis Dalessandro /** 116f48ad614SDennis Dalessandro * qp_iter_init - initialize the iterator for the qp hash list 117f48ad614SDennis Dalessandro * @dev: the hfi1_ibdev 118f48ad614SDennis Dalessandro */ 119f48ad614SDennis Dalessandro struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev); 120f48ad614SDennis Dalessandro 121f48ad614SDennis Dalessandro /** 122f48ad614SDennis Dalessandro * qp_iter_next - Find the next qp in the hash list 123f48ad614SDennis Dalessandro * @iter: the iterator for the qp hash list 124f48ad614SDennis Dalessandro */ 125f48ad614SDennis Dalessandro int qp_iter_next(struct qp_iter *iter); 126f48ad614SDennis Dalessandro 127f48ad614SDennis Dalessandro /** 128f48ad614SDennis Dalessandro * qp_iter_print - print the qp information to seq_file 129f48ad614SDennis Dalessandro * @s: the seq_file to emit the qp information on 130f48ad614SDennis Dalessandro * @iter: the iterator for the qp hash list 131f48ad614SDennis Dalessandro */ 132f48ad614SDennis Dalessandro void qp_iter_print(struct seq_file *s, struct qp_iter *iter); 133f48ad614SDennis Dalessandro 134f48ad614SDennis Dalessandro /** 135f48ad614SDennis Dalessandro * qp_comm_est - handle trap with QP established 136f48ad614SDennis Dalessandro * @qp: the QP 137f48ad614SDennis Dalessandro */ 138f48ad614SDennis Dalessandro void qp_comm_est(struct rvt_qp *qp); 139f48ad614SDennis Dalessandro 140f48ad614SDennis Dalessandro void _hfi1_schedule_send(struct rvt_qp *qp); 141f48ad614SDennis Dalessandro void hfi1_schedule_send(struct rvt_qp *qp); 142f48ad614SDennis Dalessandro 143f48ad614SDennis Dalessandro void hfi1_migrate_qp(struct rvt_qp *qp); 144f48ad614SDennis Dalessandro 145f48ad614SDennis Dalessandro /* 146f48ad614SDennis Dalessandro * Functions provided by hfi1 driver for rdmavt to use 147f48ad614SDennis Dalessandro */ 148f48ad614SDennis Dalessandro void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, 149f48ad614SDennis Dalessandro gfp_t gfp); 150f48ad614SDennis Dalessandro void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 151f48ad614SDennis Dalessandro unsigned free_all_qps(struct rvt_dev_info *rdi); 152f48ad614SDennis Dalessandro void notify_qp_reset(struct rvt_qp *qp); 153f48ad614SDennis Dalessandro int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 154f48ad614SDennis Dalessandro struct ib_qp_attr *attr); 155f48ad614SDennis Dalessandro void flush_qp_waiters(struct rvt_qp *qp); 156f48ad614SDennis Dalessandro void notify_error_qp(struct rvt_qp *qp); 157f48ad614SDennis Dalessandro void stop_send_queue(struct rvt_qp *qp); 158f48ad614SDennis Dalessandro void quiesce_qp(struct rvt_qp *qp); 159f48ad614SDennis Dalessandro u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 160f48ad614SDennis Dalessandro int mtu_to_path_mtu(u32 mtu); 161f48ad614SDennis Dalessandro void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); 162f48ad614SDennis Dalessandro #endif /* _QP_H */ 163