ntb_hw_amd.h | Explore in Territory

/*
 * 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) 2016 Advanced Micro Devices, Inc. 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) 2016 Advanced Micro Devices, Inc. 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 AMD 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.
 *
 * AMD PCIe NTB Linux driver
 *
 * Contact Information:
 * Xiangliang Yu <[email protected]>
 */

#ifndef NTB_HW_AMD_H
#define NTB_HW_AMD_H

#include <linux/ntb.h>
#include <linux/pci.h>

#define AMD_LINK_HB_TIMEOUT …
#define NTB_LNK_STA_SPEED_MASK …
#define NTB_LNK_STA_WIDTH_MASK …
#define NTB_LNK_STA_SPEED(x) …
#define NTB_LNK_STA_WIDTH(x) …

#ifndef read64
#ifdef readq
#define read64 …
#else
#define read64 …
static inline u64 _read64(void __iomem *mmio)
{
	u64 low, high;

	low = readl(mmio);
	high = readl(mmio + sizeof(u32));
	return low | (high << 32);
}
#endif
#endif

#ifndef write64
#ifdef writeq
#define write64 …
#else
#define write64 …
static inline void _write64(u64 val, void __iomem *mmio)
{
	writel(val, mmio);
	writel(val >> 32, mmio + sizeof(u32));
}
#endif
#endif

enum { … };

struct ntb_dev_data { … };

struct amd_ntb_dev;

struct amd_ntb_vec { … };

struct amd_ntb_dev { … };

#define ntb_ndev(__ntb) …
#define hb_ndev(__work) …

static void amd_set_side_info_reg(struct amd_ntb_dev *ndev, bool peer);
static void amd_clear_side_info_reg(struct amd_ntb_dev *ndev, bool peer);
static int amd_poll_link(struct amd_ntb_dev *ndev);

#endif
linux/drivers/ntb/hw/amd/ntb_hw_amd.h
