// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 *
 */
#include <linux/kernel.h>
#include <linux/fsl/mc.h>

#include "fsl-mc-private.h"

/**
 * 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,
              u32 cmd_flags,
              int dpbp_id,
              u16 *token)
{
        struct fsl_mc_command cmd = { 0 };
        struct dpbp_cmd_open *cmd_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
                                          cmd_flags, 0);
        cmd_params = (struct dpbp_cmd_open *)cmd.params;
        cmd_params->dpbp_id = cpu_to_le32(dpbp_id);

        /* send command to mc*/
        err = mc_send_command(mc_io, &cmd);
        if (err)
                return err;

        /* retrieve response parameters */
        *token = mc_cmd_hdr_read_token(&cmd);

        return err;
}
EXPORT_SYMBOL_GPL(dpbp_open);

/**
 * 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,
               u32 cmd_flags,
               u16 token)
{
        struct fsl_mc_command cmd = { 0 };

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
                                          token);

        /* send command to mc*/
        return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_close);

/**
 * 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,
                u32 cmd_flags,
                u16 token)
{
        struct fsl_mc_command cmd = { 0 };

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
                                          token);

        /* send command to mc*/
        return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_enable);

/**
 * 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,
                 u32 cmd_flags,
                 u16 token)
{
        struct fsl_mc_command cmd = { 0 };

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
                                          cmd_flags, token);

        /* send command to mc*/
        return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_disable);

/**
 * 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,
               u32 cmd_flags,
               u16 token)
{
        struct fsl_mc_command cmd = { 0 };

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
                                          cmd_flags, token);

        /* send command to mc*/
        return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_reset);

/**
 * 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,
                        u32 cmd_flags,
                        u16 token,
                        struct dpbp_attr *attr)
{
        struct fsl_mc_command cmd = { 0 };
        struct dpbp_rsp_get_attributes *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
                                          cmd_flags, token);

        /* send command to mc*/
        err = mc_send_command(mc_io, &cmd);
        if (err)
                return err;

        /* retrieve response parameters */
        rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
        attr->bpid = le16_to_cpu(rsp_params->bpid);
        attr->id = le32_to_cpu(rsp_params->id);

        return 0;
}
EXPORT_SYMBOL_GPL(dpbp_get_attributes);