ntb_transport.h revision 304380
12926Sphk/*- 22926Sphk * Copyright (c) 2016 Alexander Motin <mav@FreeBSD.org> 32926Sphk * All rights reserved. 493150Sphk * 52926Sphk * Redistribution and use in source and binary forms, with or without 62926Sphk * modification, are permitted provided that the following conditions 72926Sphk * are met: 82926Sphk * 1. Redistributions of source code must retain the above copyright 950479Speter * notice, this list of conditions and the following disclaimer. 102926Sphk * 2. Redistributions in binary form must reproduce the above copyright 112926Sphk * notice, this list of conditions and the following disclaimer in the 122926Sphk * documentation and/or other materials provided with the distribution. 132886Sphk * 142926Sphk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 152886Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 162886Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 174816Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 182886Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 192886Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 202886Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 216889Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 222886Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 232886Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 242886Sphk * SUCH DAMAGE. 252886Sphk * 2617946Sphk * $FreeBSD: stable/10/sys/dev/ntb/ntb_transport.h 304380 2016-08-18 10:39:00Z mav $ 272886Sphk */ 2817946Sphk 296889Sphkstruct ntb_transport_qp; 309491Sphk 318857Srgrimesextern devclass_t ntb_transport_devclass; 328857Srgrimes 334816Sphkenum ntb_link_event { 342886Sphk NTB_LINK_DOWN = 0, 352886Sphk NTB_LINK_UP, 362886Sphk}; 372886Sphk 382886Sphkstruct ntb_queue_handlers { 398857Srgrimes void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data, 402886Sphk void *data, int len); 412886Sphk void (*tx_handler)(struct ntb_transport_qp *qp, void *qp_data, 422886Sphk void *data, int len); 432886Sphk void (*event_handler)(void *data, enum ntb_link_event status); 442886Sphk}; 452886Sphk 462886Sphkunsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp); 478857Srgrimesunsigned int ntb_transport_max_size(struct ntb_transport_qp *qp); 482886Sphkstruct ntb_transport_qp * 492886Sphkntb_transport_create_queue(void *data, device_t dev, 502886Sphk const struct ntb_queue_handlers *handlers); 512886Sphkvoid ntb_transport_free_queue(struct ntb_transport_qp *qp); 522886Sphkint ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, 532886Sphk unsigned int len); 542886Sphkint ntb_transport_tx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, 552886Sphk unsigned int len); 562886Sphkvoid *ntb_transport_rx_remove(struct ntb_transport_qp *qp, unsigned int *len); 576889Sphkvoid ntb_transport_link_up(struct ntb_transport_qp *qp); 5817946Sphkvoid ntb_transport_link_down(struct ntb_transport_qp *qp); 5917946Sphkbool ntb_transport_link_query(struct ntb_transport_qp *qp); 607395Sphkunsigned int ntb_transport_tx_free_entry(struct ntb_transport_qp *qp); 6117946Sphk