drivers/staging/greybus/greybus_firmware.h

/*
 * Greybus Firmware Management User Header
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2016 Google Inc. All rights reserved.
 * Copyright(c) 2016 Linaro Ltd. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * 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 version 2 for more details.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2016 Google Inc. All rights reserved.
 * Copyright(c) 2016 Linaro Ltd. All rights reserved.
 *
 * 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 Google Inc. or Linaro Ltd. nor the names of
 *    its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written
 *    permission.
 *
 * 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 GOOGLE INC. OR
 * LINARO LTD. 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 __GREYBUS_FIRMWARE_USER_H
#define __GREYBUS_FIRMWARE_USER_H

#include <linux/ioctl.h>
#include <linux/types.h>

#define GB_FIRMWARE_U_TAG_MAX_SIZE		10

#define GB_FW_U_LOAD_METHOD_UNIPRO		0x01
#define GB_FW_U_LOAD_METHOD_INTERNAL		0x02

#define GB_FW_U_LOAD_STATUS_FAILED		0x00
#define GB_FW_U_LOAD_STATUS_UNVALIDATED		0x01
#define GB_FW_U_LOAD_STATUS_VALIDATED		0x02
#define GB_FW_U_LOAD_STATUS_VALIDATION_FAILED	0x03

#define GB_FW_U_BACKEND_FW_STATUS_SUCCESS	0x01
#define GB_FW_U_BACKEND_FW_STATUS_FAIL_FIND	0x02
#define GB_FW_U_BACKEND_FW_STATUS_FAIL_FETCH	0x03
#define GB_FW_U_BACKEND_FW_STATUS_FAIL_WRITE	0x04
#define GB_FW_U_BACKEND_FW_STATUS_INT		0x05
#define GB_FW_U_BACKEND_FW_STATUS_RETRY		0x06
#define GB_FW_U_BACKEND_FW_STATUS_NOT_SUPPORTED	0x07

#define GB_FW_U_BACKEND_VERSION_STATUS_SUCCESS		0x01
#define GB_FW_U_BACKEND_VERSION_STATUS_NOT_AVAILABLE	0x02
#define GB_FW_U_BACKEND_VERSION_STATUS_NOT_SUPPORTED	0x03
#define GB_FW_U_BACKEND_VERSION_STATUS_RETRY		0x04
#define GB_FW_U_BACKEND_VERSION_STATUS_FAIL_INT		0x05

/* IOCTL support */
struct fw_mgmt_ioc_get_intf_version {
	__u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE];
	__u16 major;
	__u16 minor;
} __attribute__ ((__packed__));

struct fw_mgmt_ioc_get_backend_version {
	__u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE];
	__u16 major;
	__u16 minor;
	__u8 status;
} __attribute__ ((__packed__));

struct fw_mgmt_ioc_intf_load_and_validate {
	__u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE];
	__u8 load_method;
	__u8 status;
	__u16 major;
	__u16 minor;
} __attribute__ ((__packed__));

struct fw_mgmt_ioc_backend_fw_update {
	__u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE];
	__u8 status;
} __attribute__ ((__packed__));

#define FW_MGMT_IOCTL_BASE			'F'
#define FW_MGMT_IOC_GET_INTF_FW			_IOR(FW_MGMT_IOCTL_BASE, 0, struct fw_mgmt_ioc_get_intf_version)
#define FW_MGMT_IOC_GET_BACKEND_FW		_IOWR(FW_MGMT_IOCTL_BASE, 1, struct fw_mgmt_ioc_get_backend_version)
#define FW_MGMT_IOC_INTF_LOAD_AND_VALIDATE	_IOWR(FW_MGMT_IOCTL_BASE, 2, struct fw_mgmt_ioc_intf_load_and_validate)
#define FW_MGMT_IOC_INTF_BACKEND_FW_UPDATE	_IOWR(FW_MGMT_IOCTL_BASE, 3, struct fw_mgmt_ioc_backend_fw_update)
#define FW_MGMT_IOC_SET_TIMEOUT_MS		_IOW(FW_MGMT_IOCTL_BASE, 4, unsigned int)
#define FW_MGMT_IOC_MODE_SWITCH			_IO(FW_MGMT_IOCTL_BASE, 5)

#endif /* __GREYBUS_FIRMWARE_USER_H */