/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 * Copyright 2016 NXP
 *
 * 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 copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the above-listed copyright holders nor the
 * names of any 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") as published by the Free Software
 * Foundation, either version 2 of that License or (at your option) any
 * later version.
 *
 * 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 HOLDERS 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 __FSL_DPIO_H
#define __FSL_DPIO_H

struct fsl_mc_io;

int dpio_open(struct fsl_mc_io	*mc_io,
	      u32		cmd_flags,
	      int		dpio_id,
	      u16		*token);

int dpio_close(struct fsl_mc_io	*mc_io,
	       u32		cmd_flags,
	       u16		token);

/**
 * enum dpio_channel_mode - DPIO notification channel mode
 * @DPIO_NO_CHANNEL: No support for notification channel
 * @DPIO_LOCAL_CHANNEL: Notifications on data availability can be received by a
 *	dedicated channel in the DPIO; user should point the queue's
 *	destination in the relevant interface to this DPIO
 */
enum dpio_channel_mode {
	DPIO_NO_CHANNEL = 0,
	DPIO_LOCAL_CHANNEL = 1,
};

/**
 * struct dpio_cfg - Structure representing DPIO configuration
 * @channel_mode: Notification channel mode
 * @num_priorities: Number of priorities for the notification channel (1-8);
 *			relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
 */
struct dpio_cfg {
	enum dpio_channel_mode	channel_mode;
	u8		num_priorities;
};

int dpio_enable(struct fsl_mc_io	*mc_io,
		u32		cmd_flags,
		u16		token);

int dpio_disable(struct fsl_mc_io	*mc_io,
		 u32		cmd_flags,
		 u16		token);

/**
 * struct dpio_attr - Structure representing DPIO attributes
 * @id: DPIO object ID
 * @qbman_portal_ce_offset: offset of the software portal cache-enabled area
 * @qbman_portal_ci_offset: offset of the software portal cache-inhibited area
 * @qbman_portal_id: Software portal ID
 * @channel_mode: Notification channel mode
 * @num_priorities: Number of priorities for the notification channel (1-8);
 *			relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
 * @qbman_version: QBMAN version
 */
struct dpio_attr {
	int			id;
	u64		qbman_portal_ce_offset;
	u64		qbman_portal_ci_offset;
	u16		qbman_portal_id;
	enum dpio_channel_mode	channel_mode;
	u8			num_priorities;
	u32		qbman_version;
};

int dpio_get_attributes(struct fsl_mc_io	*mc_io,
			u32		cmd_flags,
			u16		token,
			struct dpio_attr	*attr);

int dpio_get_api_version(struct fsl_mc_io *mc_io,
			 u32 cmd_flags,
			 u16 *major_ver,
			 u16 *minor_ver);

#endif /* __FSL_DPIO_H */