linux-imx

/*

 *

 * Copyright (c) 2009, Microsoft Corporation.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope 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.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple

 * Place - Suite 330, Boston, MA 02111-1307 USA.

 *

 * Authors:

 *   Haiyang Zhang <haiyangz@microsoft.com>

 *   Hank Janssen  <hjanssen@microsoft.com>

 *

 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/wait.h>

#include <linux/delay.h>

#include <linux/mm.h>

#include <linux/slab.h>

#include <linux/vmalloc.h>

#include <linux/hyperv.h>

#include <linux/export.h>

#include <asm/mshyperv.h>

​

#include "hyperv_vmbus.h"

​

​

struct vmbus_connection vmbus_connection = {

    .conn_state     = DISCONNECTED,

    .next_gpadl_handle  = ATOMIC_INIT(0xE1E10),

};

EXPORT_SYMBOL_GPL(vmbus_connection);

​

/*

 * Negotiated protocol version with the host.

 */

__u32 vmbus_proto_version;

EXPORT_SYMBOL_GPL(vmbus_proto_version);

​

static __u32 vmbus_get_next_version(__u32 current_version)

{

    switch (current_version) {

    case (VERSION_WIN7):

        return VERSION_WS2008;

​

    case (VERSION_WIN8):

        return VERSION_WIN7;

​

    case (VERSION_WIN8_1):

        return VERSION_WIN8;

​

    case (VERSION_WIN10):