// 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"

/**
 * dpcon_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_'
 * @dpcon_id:   DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io,
               u32 cmd_flags,
               int dpcon_id,
               u16 *token)
{
        struct fsl_mc_command cmd = { 0 };
        struct dpcon_cmd_open *dpcon_cmd;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
                                          cmd_flags,
                                          0);
        dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
        dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_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 0;
}
EXPORT_SYMBOL_GPL(dpcon_open);

/**
 * dpcon_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 DPCON 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 dpcon_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(DPCON_CMDID_CLOSE,
                                          cmd_flags,
                                          token);

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

/**
 * dpcon_enable() - Enable the DPCON
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPCON object
 *
 * Return:      '0' on Success; Error code otherwise
 */
int dpcon_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(DPCON_CMDID_ENABLE,
                                          cmd_flags,
                                          token);

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

/**
 * dpcon_disable() - Disable the DPCON
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPCON object
 *
 * Return:      '0' on Success; Error code otherwise
 */
int dpcon_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(DPCON_CMDID_DISABLE,
                                          cmd_flags,
                                          token);

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

/**
 * dpcon_reset() - Reset the DPCON, 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 DPCON object
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dpcon_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(DPCON_CMDID_RESET,
                                          cmd_flags, token);

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

/**
 * dpcon_get_attributes() - Retrieve DPCON 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 DPCON object
 * @attr:       Object's attributes
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dpcon_get_attributes(struct fsl_mc_io *mc_io,
                         u32 cmd_flags,
                         u16 token,
                         struct dpcon_attr *attr)
{
        struct fsl_mc_command cmd = { 0 };
        struct dpcon_rsp_get_attr *dpcon_rsp;
        int err;

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

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

        /* retrieve response parameters */
        dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
        attr->id = le32_to_cpu(dpcon_rsp->id);
        attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
        attr->num_priorities = dpcon_rsp->num_priorities;

        return 0;
}
EXPORT_SYMBOL_GPL(dpcon_get_attributes);

/**
 * dpcon_set_notification() - Set DPCON notification destination
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPCON object
 * @cfg:        Notification parameters
 *
 * Return:      '0' on Success; Error code otherwise
 */
int dpcon_set_notification(struct fsl_mc_io *mc_io,
                           u32 cmd_flags,
                           u16 token,
                           struct dpcon_notification_cfg *cfg)
{
        struct fsl_mc_command cmd = { 0 };
        struct dpcon_cmd_set_notification *dpcon_cmd;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
                                          cmd_flags,
                                          token);
        dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
        dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
        dpcon_cmd->priority = cfg->priority;
        dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);

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