linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2010 - 2015 UNISYS CORPORATION

 * All rights reserved.

 */

​

#ifndef __VBUSCHANNEL_H__

#define __VBUSCHANNEL_H__

​

/*

 * The vbus channel is the channel area provided via the BUS_CREATE controlvm

 * message for each virtual bus.  This channel area is provided to both server

 * and client ends of the bus.  The channel header area is initialized by

 * the server, and the remaining information is filled in by the client.

 * We currently use this for the client to provide various information about

 * the client devices and client drivers for the server end to see.

 */

​

#include <linux/uuid.h>

#include <linux/visorbus.h>

​

/* {193b331b-c58f-11da-95a9-00e08161165f} */

#define VISOR_VBUS_CHANNEL_GUID                     \

    GUID_INIT(0x193b331b, 0xc58f, 0x11da,               \

          0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)

​

/*

 * Must increment this whenever you insert or delete fields within this channel

 * struct.  Also increment whenever you change the meaning of fields within this

 * channel struct so as to break pre-existing software.  Note that you can

 * usually add fields to the END of the channel struct withOUT needing to

 * increment this.

 */

#define VISOR_VBUS_CHANNEL_VERSIONID 1

​

/*

 * struct visor_vbus_deviceinfo

 * @devtype:  Short string identifying the device type.

 * @drvname:  Driver .sys file name.

 * @infostrs: Kernel vversion.

 * @reserved: Pad size to 256 bytes.

 *

 * An array of this struct is present in the channel area for each vbus. It is

 * filled in by the client side to provide info about the device and driver from

 * the client's perspective.

 */

struct visor_vbus_deviceinfo {

    u8 devtype[16];

    u8 drvname[16];

    u8 infostrs[96];

    u8 reserved[128];

} __packed;

​

/*

 * struct visor_vbus_headerinfo

 * @struct_bytes:         Size of this struct in bytes.

 * @device_info_struct_bytes: Size of VISOR_VBUS_DEVICEINFO.

 * @dev_info_count:       Num of items in DevInfo member. This is the

 *                allocated size.

 * @chp_info_offset:          Byte offset from beginning of this struct to the

 *                ChpInfo struct.

 * @bus_info_offset:          Byte offset from beginning of this struct to the

 *                BusInfo struct.