linux/include/linux/ntb.h
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   1/*
   2 * This file is provided under a dual BSD/GPLv2 license.  When using or
   3 *   redistributing this file, you may do so under either license.
   4 *
   5 *   GPL LICENSE SUMMARY
   6 *
   7 *   Copyright(c) 2012 Intel Corporation. All rights reserved.
   8 *
   9 *   This program is free software; you can redistribute it and/or modify
  10 *   it under the terms of version 2 of the GNU General Public License as
  11 *   published by the Free Software Foundation.
  12 *
  13 *   BSD LICENSE
  14 *
  15 *   Copyright(c) 2012 Intel Corporation. All rights reserved.
  16 *
  17 *   Redistribution and use in source and binary forms, with or without
  18 *   modification, are permitted provided that the following conditions
  19 *   are met:
  20 *
  21 *     * Redistributions of source code must retain the above copyright
  22 *       notice, this list of conditions and the following disclaimer.
  23 *     * Redistributions in binary form must reproduce the above copy
  24 *       notice, this list of conditions and the following disclaimer in
  25 *       the documentation and/or other materials provided with the
  26 *       distribution.
  27 *     * Neither the name of Intel Corporation nor the names of its
  28 *       contributors may be used to endorse or promote products derived
  29 *       from this software without specific prior written permission.
  30 *
  31 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  34 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  36 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  37 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  38 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  39 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  40 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  41 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  42 *
  43 * Intel PCIe NTB Linux driver
  44 *
  45 * Contact Information:
  46 * Jon Mason <jon.mason@intel.com>
  47 */
  48
  49struct ntb_transport_qp;
  50
  51struct ntb_client {
  52        struct device_driver driver;
  53        int (*probe) (struct pci_dev *pdev);
  54        void (*remove) (struct pci_dev *pdev);
  55};
  56
  57int ntb_register_client(struct ntb_client *drvr);
  58void ntb_unregister_client(struct ntb_client *drvr);
  59int ntb_register_client_dev(char *device_name);
  60void ntb_unregister_client_dev(char *device_name);
  61
  62struct ntb_queue_handlers {
  63        void (*rx_handler) (struct ntb_transport_qp *qp, void *qp_data,
  64                            void *data, int len);
  65        void (*tx_handler) (struct ntb_transport_qp *qp, void *qp_data,
  66                            void *data, int len);
  67        void (*event_handler) (void *data, int status);
  68};
  69
  70unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp);
  71unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp);
  72struct ntb_transport_qp *
  73ntb_transport_create_queue(void *data, struct pci_dev *pdev,
  74                           const struct ntb_queue_handlers *handlers);
  75void ntb_transport_free_queue(struct ntb_transport_qp *qp);
  76int ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data,
  77                             unsigned int len);
  78int ntb_transport_tx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data,
  79                             unsigned int len);
  80void *ntb_transport_rx_remove(struct ntb_transport_qp *qp, unsigned int *len);
  81void ntb_transport_link_up(struct ntb_transport_qp *qp);
  82void ntb_transport_link_down(struct ntb_transport_qp *qp);
  83bool ntb_transport_link_query(struct ntb_transport_qp *qp);
  84
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