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/*
* Freescale Layerscape MC I/O wrapper
*
* Copyright (C) 2013-2015 Freescale Semiconductor, Inc.
* Author: German Rivera <German.Rivera@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*!
* @file fsl_dpbp.h
* @brief Data Path Buffer Pool API
*/
#ifndef __FSL_DPBP_H
#define __FSL_DPBP_H
/* DPBP Version */
#define DPBP_VER_MAJOR 2
#define DPBP_VER_MINOR 0
/* Command IDs */
#define DPBP_CMDID_CLOSE 0x800
#define DPBP_CMDID_OPEN 0x804
#define DPBP_CMDID_ENABLE 0x002
#define DPBP_CMDID_DISABLE 0x003
#define DPBP_CMDID_GET_ATTR 0x004
#define DPBP_CMDID_RESET 0x005
/* cmd, param, offset, width, type, arg_name */
#define DPBP_CMD_OPEN(cmd, dpbp_id) \
MC_CMD_OP(cmd, 0, 0, 32, int, dpbp_id)
/* cmd, param, offset, width, type, arg_name */
#define DPBP_RSP_GET_ATTRIBUTES(cmd, attr) \
do { \
MC_RSP_OP(cmd, 0, 16, 16, uint16_t, attr->bpid); \
MC_RSP_OP(cmd, 0, 32, 32, int, attr->id);\
MC_RSP_OP(cmd, 1, 0, 16, uint16_t, attr->version.major);\
MC_RSP_OP(cmd, 1, 16, 16, uint16_t, attr->version.minor);\
} while (0)
/* 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
* @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, 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
* @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, uint16_t token);
/**
* dpbp_enable() - Enable the DPBP.
* @mc_io: Pointer to MC portal's I/O object
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_enable(struct fsl_mc_io *mc_io, uint16_t token);
/**
* dpbp_disable() - Disable the DPBP.
* @mc_io: Pointer to MC portal's I/O object
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_disable(struct fsl_mc_io *mc_io, uint16_t token);
/**
* dpbp_reset() - Reset the DPBP, returns the object to initial state.
* @mc_io: Pointer to MC portal's I/O object
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_reset(struct fsl_mc_io *mc_io, uint16_t token);
/**
* struct dpbp_attr - Structure representing DPBP attributes
* @id: DPBP object ID
* @version: DPBP version
* @bpid: Hardware buffer pool ID; should be used as an argument in
* acquire/release operations on buffers
*/
struct dpbp_attr {
int id;
/**
* struct version - Structure representing DPBP version
* @major: DPBP major version
* @minor: DPBP minor version
*/
struct {
uint16_t major;
uint16_t minor;
} version;
uint16_t bpid;
};
/**
* dpbp_get_attributes - Retrieve DPBP attributes.
*
* @mc_io: Pointer to MC portal's I/O object
* @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,
uint16_t token,
struct dpbp_attr *attr);
/** @} */
#endif /* __FSL_DPBP_H */
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