/*
 * drivers/net/ethernet/mellanox/mlxfw/mlxfw.h
 * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * 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.
 */

#ifndef _MLXFW_H
#define _MLXFW_H

#include <linux/firmware.h>

enum mlxfw_fsm_state {
	MLXFW_FSM_STATE_IDLE,
	MLXFW_FSM_STATE_LOCKED,
	MLXFW_FSM_STATE_INITIALIZE,
	MLXFW_FSM_STATE_DOWNLOAD,
	MLXFW_FSM_STATE_VERIFY,
	MLXFW_FSM_STATE_APPLY,
	MLXFW_FSM_STATE_ACTIVATE,
};

enum mlxfw_fsm_state_err {
	MLXFW_FSM_STATE_ERR_OK,
	MLXFW_FSM_STATE_ERR_ERROR,
	MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR,
	MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE,
	MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY,
	MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED,
	MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED,
	MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE,
	MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT,
	MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET,
	MLXFW_FSM_STATE_ERR_MAX,
};

struct mlxfw_dev;

struct mlxfw_dev_ops {
	int (*component_query)(struct mlxfw_dev *mlxfw_dev, u16 component_index,
			       u32 *p_max_size, u8 *p_align_bits,
			       u16 *p_max_write_size);

	int (*fsm_lock)(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle);

	int (*fsm_component_update)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
				    u16 component_index, u32 component_size);

	int (*fsm_block_download)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
				  u8 *data, u16 size, u32 offset);

	int (*fsm_component_verify)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
				    u16 component_index);

	int (*fsm_activate)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);

	int (*fsm_query_state)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
			       enum mlxfw_fsm_state *fsm_state,
			       enum mlxfw_fsm_state_err *fsm_state_err);

	void (*fsm_cancel)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);

	void (*fsm_release)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
};

struct mlxfw_dev {
	const struct mlxfw_dev_ops *ops;
	const char *psid;
	u16 psid_size;
};

#if IS_REACHABLE(CONFIG_MLXFW)
int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
			 const struct firmware *firmware);
#else
static inline
int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
			 const struct firmware *firmware)
{
	return -EOPNOTSUPP;
}
#endif

#endif