| #ifndef _QP_H |
| #define _QP_H |
| /* |
| * Copyright(c) 2015, 2016 Intel Corporation. |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * BSD LICENSE |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * - Neither the name of Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <linux/hash.h> |
| #include <rdma/rdmavt_qp.h> |
| #include "verbs.h" |
| #include "sdma.h" |
| |
| extern unsigned int hfi1_qp_table_size; |
| |
| /* |
| * free_ahg - clear ahg from QP |
| */ |
| static inline void clear_ahg(struct rvt_qp *qp) |
| { |
| struct hfi1_qp_priv *priv = qp->priv; |
| |
| priv->s_hdr->ahgcount = 0; |
| qp->s_flags &= ~(RVT_S_AHG_VALID | RVT_S_AHG_CLEAR); |
| if (priv->s_sde && qp->s_ahgidx >= 0) |
| sdma_ahg_free(priv->s_sde, qp->s_ahgidx); |
| qp->s_ahgidx = -1; |
| } |
| |
| /** |
| * hfi1_compute_aeth - compute the AETH (syndrome + MSN) |
| * @qp: the queue pair to compute the AETH for |
| * |
| * Returns the AETH. |
| */ |
| __be32 hfi1_compute_aeth(struct rvt_qp *qp); |
| |
| /** |
| * hfi1_create_qp - create a queue pair for a device |
| * @ibpd: the protection domain who's device we create the queue pair for |
| * @init_attr: the attributes of the queue pair |
| * @udata: user data for libibverbs.so |
| * |
| * Returns the queue pair on success, otherwise returns an errno. |
| * |
| * Called by the ib_create_qp() core verbs function. |
| */ |
| struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd, |
| struct ib_qp_init_attr *init_attr, |
| struct ib_udata *udata); |
| /** |
| * hfi1_get_credit - flush the send work queue of a QP |
| * @qp: the qp who's send work queue to flush |
| * @aeth: the Acknowledge Extended Transport Header |
| * |
| * The QP s_lock should be held. |
| */ |
| void hfi1_get_credit(struct rvt_qp *qp, u32 aeth); |
| |
| /** |
| * hfi1_qp_wakeup - wake up on the indicated event |
| * @qp: the QP |
| * @flag: flag the qp on which the qp is stalled |
| */ |
| void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); |
| |
| struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); |
| struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); |
| |
| struct qp_iter; |
| |
| /** |
| * qp_iter_init - initialize the iterator for the qp hash list |
| * @dev: the hfi1_ibdev |
| */ |
| struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev); |
| |
| /** |
| * qp_iter_next - Find the next qp in the hash list |
| * @iter: the iterator for the qp hash list |
| */ |
| int qp_iter_next(struct qp_iter *iter); |
| |
| /** |
| * qp_iter_print - print the qp information to seq_file |
| * @s: the seq_file to emit the qp information on |
| * @iter: the iterator for the qp hash list |
| */ |
| void qp_iter_print(struct seq_file *s, struct qp_iter *iter); |
| |
| /** |
| * qp_comm_est - handle trap with QP established |
| * @qp: the QP |
| */ |
| void qp_comm_est(struct rvt_qp *qp); |
| |
| void _hfi1_schedule_send(struct rvt_qp *qp); |
| void hfi1_schedule_send(struct rvt_qp *qp); |
| |
| void hfi1_migrate_qp(struct rvt_qp *qp); |
| |
| /* |
| * Functions provided by hfi1 driver for rdmavt to use |
| */ |
| void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
| gfp_t gfp); |
| void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); |
| unsigned free_all_qps(struct rvt_dev_info *rdi); |
| void notify_qp_reset(struct rvt_qp *qp); |
| int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
| struct ib_qp_attr *attr); |
| void flush_qp_waiters(struct rvt_qp *qp); |
| void notify_error_qp(struct rvt_qp *qp); |
| void stop_send_queue(struct rvt_qp *qp); |
| void quiesce_qp(struct rvt_qp *qp); |
| u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); |
| int mtu_to_path_mtu(u32 mtu); |
| void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); |
| #endif /* _QP_H */ |
