linux/drivers/ntb/hw/intel/ntb_hw_gen3.c

/*
 * 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
 *
 *   Copyright(c) 2017 Intel Corporation. All rights reserved.
 *
 *   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.
 *
 *   BSD LICENSE
 *
 *   Copyright(c) 2017 Intel Corporation. All rights reserved.
 *
 *   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 copy
 *       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.
 *
 * Intel PCIe GEN3 NTB Linux driver
 *
 */

#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/ntb.h>

#include "ntb_hw_intel.h"
#include "ntb_hw_gen1.h"
#include "ntb_hw_gen3.h"

static int gen3_poll_link(struct intel_ntb_dev *ndev);

static const struct intel_ntb_reg gen3_reg = …;

static const struct intel_ntb_alt_reg gen3_pri_reg = …;

static const struct intel_ntb_alt_reg gen3_b2b_reg = …;

static const struct intel_ntb_xlat_reg gen3_sec_xlat = …;

static int gen3_poll_link(struct intel_ntb_dev *ndev)
{ … }

static int gen3_init_isr(struct intel_ntb_dev *ndev)
{ … }

static int gen3_setup_b2b_mw(struct intel_ntb_dev *ndev,
			    const struct intel_b2b_addr *addr,
			    const struct intel_b2b_addr *peer_addr)
{ … }

static int gen3_init_ntb(struct intel_ntb_dev *ndev)
{ … }

int gen3_init_dev(struct intel_ntb_dev *ndev)
{ … }

ssize_t ndev_ntb3_debugfs_read(struct file *filp, char __user *ubuf,
				      size_t count, loff_t *offp)
{ … }

int intel_ntb3_link_enable(struct ntb_dev *ntb, enum ntb_speed max_speed,
		enum ntb_width max_width)
{ … }
static int intel_ntb3_mw_set_trans(struct ntb_dev *ntb, int pidx, int idx,
				   dma_addr_t addr, resource_size_t size)
{ … }

int intel_ntb3_peer_db_addr(struct ntb_dev *ntb, phys_addr_t *db_addr,
				   resource_size_t *db_size,
				   u64 *db_data, int db_bit)
{ … }

int intel_ntb3_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
{ … }

u64 intel_ntb3_db_read(struct ntb_dev *ntb)
{ … }

int intel_ntb3_db_clear(struct ntb_dev *ntb, u64 db_bits)
{ … }

const struct ntb_dev_ops intel_ntb3_ops = …;