linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2010 - 2015 UNISYS CORPORATION

 * All rights reserved.

 */

​

#ifndef __CONTROLVMCHANNEL_H__

#define __CONTROLVMCHANNEL_H__

​

#include <linux/uuid.h>

#include <linux/visorbus.h>

​

/* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */

#define VISOR_CONTROLVM_CHANNEL_GUID \

    GUID_INIT(0x2b3c2d10, 0x7ef5, 0x4ad8, \

          0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d)

​

#define CONTROLVM_MESSAGE_MAX 64

​

/*

 * 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_CONTROLVM_CHANNEL_VERSIONID 1

​

/* Defines for various channel queues */

#define CONTROLVM_QUEUE_REQUEST     0

#define CONTROLVM_QUEUE_RESPONSE    1

#define CONTROLVM_QUEUE_EVENT       2

#define CONTROLVM_QUEUE_ACK     3

​

/* Max num of messages stored during IOVM creation to be reused after crash */

#define CONTROLVM_CRASHMSG_MAX 2

​

/*

 * struct visor_segment_state

 * @enabled:   May enter other states.

 * @active:    Assigned to active partition.

 * @alive:     Configure message sent to service/server.

 * @revoked:   Similar to partition state ShuttingDown.

 * @allocated: Memory (device/port number) has been selected by Command.

 * @known:     Has been introduced to the service/guest partition.

 * @ready:     Service/Guest partition has responded to introduction.

 * @operating: Resource is configured and operating.

 * @reserved:  Natural alignment.

 *

 * Note: Don't use high bit unless we need to switch to ushort which is

 * non-compliant.

 */

struct visor_segment_state  {

    u16 enabled:1;

    u16 active:1;

    u16 alive:1;

    u16 revoked:1;

    u16 allocated:1;

    u16 known:1;

    u16 ready:1;

    u16 operating:1;

    u16 reserved:8;

} __packed;

​

static const struct visor_segment_state segment_state_running = {

    1, 1, 1, 0, 1, 1, 1, 1

};

​

static const struct visor_segment_state segment_state_paused = {

    1, 1, 1, 0, 1, 1, 1, 0

};

​

static const struct visor_segment_state segment_state_standby = {

    1, 1, 0, 0, 1, 1, 1, 0

};

​

/*

 * enum controlvm_id

 * @CONTROLVM_INVALID:

 * @CONTROLVM_BUS_CREATE:       CP --> SP, GP.

 * @CONTROLVM_BUS_DESTROY:      CP --> SP, GP.

 * @CONTROLVM_BUS_CONFIGURE:        CP --> SP.

 * @CONTROLVM_BUS_CHANGESTATE:      CP --> SP, GP.

 * @CONTROLVM_BUS_CHANGESTATE_EVENT:    SP, GP --> CP.

 * @CONTROLVM_DEVICE_CREATE:        CP --> SP, GP.

 * @CONTROLVM_DEVICE_DESTROY:       CP --> SP, GP.

 * @CONTROLVM_DEVICE_CONFIGURE:     CP --> SP.

 * @CONTROLVM_DEVICE_CHANGESTATE:   CP --> SP, GP.

 * @CONTROLVM_DEVICE_CHANGESTATE_EVENT: SP, GP --> CP.

 * @CONTROLVM_DEVICE_RECONFIGURE:   CP --> Boot.

 * @CONTROLVM_CHIPSET_INIT:     CP --> SP, GP.

 * @CONTROLVM_CHIPSET_STOP:     CP --> SP, GP.