/*-
 * This file is provided under a dual BSD/GPLv2 license. When using or
 * redistributing this file, you may do so under either license.
 *
 *   BSD LICENSE
 *
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 * Copyright (c) 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.
 *
 *   GPL LICENSE SUMMARY
 *
 * 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_DPBP_H
#define __FSL_DPBP_H

/* Data Path Buffer Pool API
 * Contains initialization APIs and runtime control APIs for DPBP
 */

struct fsl_mc_io;

/**
 * dpbp_open() - Open a control session for the specified object.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @dpbp_id:	DPBP unique ID
 * @token:	Returned token; use in subsequent API calls
 *
 * This function can be used to open a control session for an
 * already created object; an object may have been declared in
 * the DPL or by calling the dpbp_create function.
 * This function returns a unique authentication token,
 * associated with the specific object ID and the specific MC
 * portal; this token must be used in all subsequent commands for
 * this specific object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_open(struct fsl_mc_io	*mc_io,
	      uint32_t		cmd_flags,
	      int		dpbp_id,
	      uint16_t		*token);

/**
 * dpbp_close() - Close the control session of the object
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * After this function is called, no further operations are
 * allowed on the object without opening a new control session.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_close(struct fsl_mc_io	*mc_io,
	       uint32_t		cmd_flags,
	       uint16_t		token);

/**
 * struct dpbp_cfg - Structure representing DPBP configuration
 * @options:	place holder
 */
struct dpbp_cfg {
	uint32_t options;
};

/**
 * dpbp_create() - Create the DPBP object.
 * @mc_io:	Pointer to MC portal's I/O object
 * @dprc_token:	Parent container token; '0' for default container
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @cfg:	Configuration structure
 * @obj_id: returned object id
 *
 * Create the DPBP object, allocate required resources and
 * perform required initialization.
 *
 * The object can be created either by declaring it in the
 * DPL file, or by calling this function.
 *
 * The function accepts an authentication token of a parent
 * container that this object should be assigned to. The token
 * can be '0' so the object will be assigned to the default container.
 * The newly created object can be opened with the returned
 * object id and using the container's associated tokens and MC portals.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_create(struct fsl_mc_io	*mc_io,
		uint16_t		dprc_token,
		uint32_t		cmd_flags,
		const struct dpbp_cfg	*cfg,
		uint32_t		*obj_id);

/**
 * dpbp_destroy() - Destroy the DPBP object and release all its resources.
 * @dprc_token: Parent container token; '0' for default container
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @object_id:	The object id; it must be a valid id within the container that
 * created this object;
 *
 * Return:	'0' on Success; error code otherwise.
 */
int dpbp_destroy(struct fsl_mc_io	*mc_io,
		 uint16_t		dprc_token,
		 uint32_t		cmd_flags,
		 uint32_t		object_id);

/**
 * dpbp_enable() - Enable the DPBP.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_enable(struct fsl_mc_io	*mc_io,
		uint32_t		cmd_flags,
		uint16_t		token);

/**
 * dpbp_disable() - Disable the DPBP.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_disable(struct fsl_mc_io	*mc_io,
		 uint32_t		cmd_flags,
		 uint16_t		token);

/**
 * dpbp_is_enabled() - Check if the DPBP is enabled.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 * @en:		Returns '1' if object is enabled; '0' otherwise
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_is_enabled(struct fsl_mc_io	*mc_io,
		    uint32_t		cmd_flags,
		    uint16_t		token,
		    int			*en);

/**
 * dpbp_reset() - Reset the DPBP, returns the object to initial state.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_reset(struct fsl_mc_io	*mc_io,
	       uint32_t		cmd_flags,
	       uint16_t		token);

/**
 * struct dpbp_attr - Structure representing DPBP attributes
 * @id:		DPBP object ID
 * @bpid:	Hardware buffer pool ID; should be used as an argument in
 *		acquire/release operations on buffers
 */
struct dpbp_attr {
	int id;
	uint16_t bpid;
};

/**
 * dpbp_get_attributes - Retrieve DPBP attributes.
 *
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 * @attr:	Returned object's attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_get_attributes(struct fsl_mc_io	*mc_io,
			uint32_t		cmd_flags,
			uint16_t		token,
			struct dpbp_attr	*attr);

/**
 * dpbp_get_api_version() - Get buffer pool API version
 * @mc_io:  Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @major_ver:	Major version of data path buffer pool API
 * @minor_ver:	Minor version of data path buffer pool API
 *
 * Return:  '0' on Success; Error code otherwise.
 */
int dpbp_get_api_version(struct fsl_mc_io *mc_io,
			 uint32_t cmd_flags,
			 uint16_t *major_ver,
			 uint16_t *minor_ver);

/**
 * dpbp_get_num_free_bufs() - Get number of free buffers in the buffer pool
 * @mc_io:  Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 * @num_free_bufs:	Number of free buffers
 *
 * Return:  '0' on Success; Error code otherwise.
 */
int dpbp_get_num_free_bufs(struct fsl_mc_io *mc_io,
			   uint32_t cmd_flags,
			   uint16_t token,
			   uint32_t *num_free_bufs);

#endif /* __FSL_DPBP_H */