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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef EC_GOOGLE_WILCO_EC_H
#define EC_GOOGLE_WILCO_EC_H
#include <stddef.h>
#include <stdint.h>
/* Different supported message types */
enum wilco_ec_msg_type {
WILCO_EC_MSG_RAW, /* Raw message, do not skip any data */
WILCO_EC_MSG_DEFAULT, /* Skip 1 byte of response data */
WILCO_EC_MSG_NO_RESPONSE, /* EC does not respond to command */
};
/**
* wilco_ec_mailbox
*
* Send a command request to the EC mailbox and receive the response.
*
* @type: Mailbox message type, see enum above
* @command: Command to execute
* @request_data: Request data buffer
* @request_size: Number of bytes in request data buffer (max 32)
* @response_data: Response data buffer
* @response_size: Number of bytes in response data buffer (max 32)
*
* @return number of bytes received, negative error code on failure
*/
int wilco_ec_mailbox(enum wilco_ec_msg_type type, uint8_t command,
const void *request_data, size_t request_size,
void *response_data, size_t response_size);
#endif /* EC_GOOGLE_WILCO_EC_H */
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