[net-next-2.6.git] / drivers / staging / hv / hv_utils.c

/*
 * Copyright (c) 2010, 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>
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/sysctl.h>
#include <linux/reboot.h>
#include <linux/dmi.h>
#include <linux/pci.h>

#include "logging.h"
#include "osd.h"
#include "vmbus.h"
#include "vmbus_packet_format.h"
#include "vmbus_channel_interface.h"
#include "version_info.h"
#include "channel.h"
#include "vmbus_private.h"
#include "vmbus_api.h"
#include "utils.h"


static void shutdown_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u8 *buf;
	u32 buflen, recvlen;
	u64 requestid;
	u8  execute_shutdown = false;

	struct shutdown_msg_data *shutdown_msg;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;

	DPRINT_ENTER(VMBUS);

	buflen = PAGE_SIZE;
	buf = kmalloc(buflen, GFP_ATOMIC);

	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);

	if (recvlen > 0) {
		DPRINT_DBG(VMBUS, "shutdown packet: len=%d, requestid=%lld",
			   recvlen, requestid);

		icmsghdrp = (struct icmsg_hdr *)&buf[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			prep_negotiate_resp(icmsghdrp, negop, buf);
		} else {
			shutdown_msg = (struct shutdown_msg_data *)&buf[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			switch (shutdown_msg->flags) {
			case 0:
			case 1:
				icmsghdrp->status = HV_S_OK;
				execute_shutdown = true;

				DPRINT_INFO(VMBUS, "Shutdown request received -"
					    " gracefull shutdown initiated");
				break;
			default:
				icmsghdrp->status = HV_E_FAIL;
				execute_shutdown = false;

				DPRINT_INFO(VMBUS, "Shutdown request received -"
					    " Invalid request");
				break;
			};
		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		VmbusChannelSendPacket(channel, buf,
				       recvlen, requestid,
				       VmbusPacketTypeDataInBand, 0);
	}

	kfree(buf);

	DPRINT_EXIT(VMBUS);

	if (execute_shutdown == true)
		orderly_poweroff(false);
}

/*
 * Set guest time to host UTC time.
 */
static inline void do_adj_guesttime(u64 hosttime)
{
	s64 host_tns;
	struct timespec host_ts;

	host_tns = (hosttime - WLTIMEDELTA) * 100;
	host_ts = ns_to_timespec(host_tns);

	do_settimeofday(&host_ts);
}

/*
 * Synchronize time with host after reboot, restore, etc.
 *
 * ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM.
 * After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time
 * message after the timesync channel is opened. Since the hv_utils module is
 * loaded after hv_vmbus, the first message is usually missed. The other
 * thing is, systime is automatically set to emulated hardware clock which may
 * not be UTC time or in the same time zone. So, to override these effects, we
 * use the first 50 time samples for initial system time setting.
 */
static inline void adj_guesttime(u64 hosttime, u8 flags)
{
	static s32 scnt = 50;

	if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
		do_adj_guesttime(hosttime);
		return;
	}

	if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
		scnt--;
		do_adj_guesttime(hosttime);
	}
}

/*
 * Time Sync Channel message handler.
 */
static void timesync_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u8 *buf;
	u32 buflen, recvlen;
	u64 requestid;
	struct icmsg_hdr *icmsghdrp;
	struct ictimesync_data *timedatap;

	DPRINT_ENTER(VMBUS);

	buflen = PAGE_SIZE;
	buf = kmalloc(buflen, GFP_ATOMIC);

	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);

	if (recvlen > 0) {
		DPRINT_DBG(VMBUS, "timesync packet: recvlen=%d, requestid=%lld",
			recvlen, requestid);

		icmsghdrp = (struct icmsg_hdr *)&buf[
				sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			prep_negotiate_resp(icmsghdrp, NULL, buf);
		} else {
			timedatap = (struct ictimesync_data *)&buf[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];
			adj_guesttime(timedatap->parenttime, timedatap->flags);
		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		VmbusChannelSendPacket(channel, buf,
				recvlen, requestid,
				VmbusPacketTypeDataInBand, 0);
	}

	kfree(buf);

	DPRINT_EXIT(VMBUS);
}

/*
 * Heartbeat functionality.
 * Every two seconds, Hyper-V send us a heartbeat request message.
 * we respond to this message, and Hyper-V knows we are alive.
 */
static void heartbeat_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u8 *buf;
	u32 buflen, recvlen;
	u64 requestid;
	struct icmsg_hdr *icmsghdrp;
	struct heartbeat_msg_data *heartbeat_msg;

	DPRINT_ENTER(VMBUS);

	buflen = PAGE_SIZE;
	buf = kmalloc(buflen, GFP_ATOMIC);

	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);

	if (recvlen > 0) {
		DPRINT_DBG(VMBUS, "heartbeat packet: len=%d, requestid=%lld",
			   recvlen, requestid);

		icmsghdrp = (struct icmsg_hdr *)&buf[
			sizeof(struct vmbuspipe_hdr)];

		icmsghdrp = (struct icmsg_hdr *)&buf[
				sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			prep_negotiate_resp(icmsghdrp, NULL, buf);
		} else {
			heartbeat_msg = (struct heartbeat_msg_data *)&buf[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			DPRINT_DBG(VMBUS, "heartbeat seq = %lld",
				   heartbeat_msg->seq_num);

			heartbeat_msg->seq_num += 1;
		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		VmbusChannelSendPacket(channel, buf,
				       recvlen, requestid,
				       VmbusPacketTypeDataInBand, 0);
	}

	kfree(buf);

	DPRINT_EXIT(VMBUS);
}

static const struct pci_device_id __initconst
hv_utils_pci_table[] __maybe_unused = {
	{ PCI_DEVICE(0x1414, 0x5353) }, /* Hyper-V emulated VGA controller */
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, hv_utils_pci_table);


static const struct dmi_system_id __initconst
hv_utils_dmi_table[] __maybe_unused  = {
	{
		.ident = "Hyper-V",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
			DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
		},
	},
	{ },
};
MODULE_DEVICE_TABLE(dmi, hv_utils_dmi_table);


static int __init init_hyperv_utils(void)
{
	printk(KERN_INFO "Registering HyperV Utility Driver\n");

	if (!dmi_check_system(hv_utils_dmi_table))
		return -ENODEV;

	hv_cb_utils[HV_SHUTDOWN_MSG].channel->OnChannelCallback =
		&shutdown_onchannelcallback;
	hv_cb_utils[HV_SHUTDOWN_MSG].callback = &shutdown_onchannelcallback;

	hv_cb_utils[HV_TIMESYNC_MSG].channel->OnChannelCallback =
		&timesync_onchannelcallback;
	hv_cb_utils[HV_TIMESYNC_MSG].callback = &timesync_onchannelcallback;

	hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
		&heartbeat_onchannelcallback;
	hv_cb_utils[HV_HEARTBEAT_MSG].callback = &heartbeat_onchannelcallback;

	return 0;
}

static void exit_hyperv_utils(void)
{
	printk(KERN_INFO "De-Registered HyperV Utility Driver\n");

	hv_cb_utils[HV_SHUTDOWN_MSG].channel->OnChannelCallback =
		&chn_cb_negotiate;
	hv_cb_utils[HV_SHUTDOWN_MSG].callback = &chn_cb_negotiate;

	hv_cb_utils[HV_TIMESYNC_MSG].channel->OnChannelCallback =
		&chn_cb_negotiate;
	hv_cb_utils[HV_TIMESYNC_MSG].callback = &chn_cb_negotiate;

	hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
		&chn_cb_negotiate;
	hv_cb_utils[HV_HEARTBEAT_MSG].callback = &chn_cb_negotiate;
}

module_init(init_hyperv_utils);
module_exit(exit_hyperv_utils);

MODULE_DESCRIPTION("Hyper-V Utilities");
MODULE_VERSION(HV_DRV_VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
c88c4e4c HJ	1	/*
	2	* Copyright (c) 2010, Microsoft Corporation.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms and conditions of the GNU General Public License,
	6	* version 2, as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
	15	* Place - Suite 330, Boston, MA 02111-1307 USA.
	16	*
	17	* Authors:
	18	* Haiyang Zhang <haiyangz@microsoft.com>
	19	* Hank Janssen <hjanssen@microsoft.com>
	20	*/
	21	#include <linux/kernel.h>
	22	#include <linux/init.h>
	23	#include <linux/module.h>
	24	#include <linux/slab.h>
	25	#include <linux/sysctl.h>
9e629075	26	#include <linux/reboot.h>
d750785f HZ	27	#include <linux/dmi.h>
d750785f HZ	28	#include <linux/pci.h>
c88c4e4c HJ	29
	30	#include "logging.h"
	31	#include "osd.h"
	32	#include "vmbus.h"
f8e5add2	33	#include "vmbus_packet_format.h"
0e0ab5f5	34	#include "vmbus_channel_interface.h"
2d82f6c7	35	#include "version_info.h"
4df90be5	36	#include "channel.h"
72daf320	37	#include "vmbus_private.h"
447fc67e	38	#include "vmbus_api.h"
c88c4e4c HJ	39	#include "utils.h"
	40
	41
6610944a	42	static void shutdown_onchannelcallback(void *context)
c88c4e4c HJ	43	{
	44	struct vmbus_channel *channel = context;
	45	u8 *buf;
	46	u32 buflen, recvlen;
	47	u64 requestid;
	48	u8 execute_shutdown = false;
	49
	50	struct shutdown_msg_data *shutdown_msg;
	51
	52	struct icmsg_hdr *icmsghdrp;
	53	struct icmsg_negotiate *negop = NULL;
	54
	55	DPRINT_ENTER(VMBUS);
	56
	57	buflen = PAGE_SIZE;
	58	buf = kmalloc(buflen, GFP_ATOMIC);
	59
	60	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);
	61
	62	if (recvlen > 0) {
	63	DPRINT_DBG(VMBUS, "shutdown packet: len=%d, requestid=%lld",
	64	recvlen, requestid);
	65
	66	icmsghdrp = (struct icmsg_hdr *)&buf[
	67	sizeof(struct vmbuspipe_hdr)];
	68
	69	if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
	70	prep_negotiate_resp(icmsghdrp, negop, buf);
	71	} else {
	72	shutdown_msg = (struct shutdown_msg_data *)&buf[
	73	sizeof(struct vmbuspipe_hdr) +
	74	sizeof(struct icmsg_hdr)];
	75
	76	switch (shutdown_msg->flags) {
	77	case 0:
	78	case 1:
	79	icmsghdrp->status = HV_S_OK;
	80	execute_shutdown = true;
	81
	82	DPRINT_INFO(VMBUS, "Shutdown request received -"
	83	" gracefull shutdown initiated");
	84	break;
	85	default:
	86	icmsghdrp->status = HV_E_FAIL;
	87	execute_shutdown = false;
	88
	89	DPRINT_INFO(VMBUS, "Shutdown request received -"
	90	" Invalid request");
	91	break;
	92	};
	93	}
	94
	95	icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
	96	\| ICMSGHDRFLAG_RESPONSE;
	97
	98	VmbusChannelSendPacket(channel, buf,
	99	recvlen, requestid,
	100	VmbusPacketTypeDataInBand, 0);
	101	}
	102
	103	kfree(buf);
	104
	105	DPRINT_EXIT(VMBUS);
	106
107	if (execute_shutdown == true)
9e629075	108	orderly_poweroff(false);
c88c4e4c HJ	109	}
c88c4e4c HJ	110
39c4e9c3	111	/*
e9ec3603	112	* Set guest time to host UTC time.
39c4e9c3	113	*/
e9ec3603	114	static inline void do_adj_guesttime(u64 hosttime)
39c4e9c3 HZ	115	{
	116	s64 host_tns;
	117	struct timespec host_ts;
39c4e9c3 HZ	118
	119	host_tns = (hosttime - WLTIMEDELTA) * 100;
	120	host_ts = ns_to_timespec(host_tns);
	121
e9ec3603 HZ	122	do_settimeofday(&host_ts);
	123	}
	124
	125	/*
	126	* Synchronize time with host after reboot, restore, etc.
	127	*
	128	* ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM.
	129	* After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time
	130	* message after the timesync channel is opened. Since the hv_utils module is
	131	* loaded after hv_vmbus, the first message is usually missed. The other
	132	* thing is, systime is automatically set to emulated hardware clock which may
	133	* not be UTC time or in the same time zone. So, to override these effects, we
	134	* use the first 50 time samples for initial system time setting.
	135	*/
	136	static inline void adj_guesttime(u64 hosttime, u8 flags)
	137	{
	138	static s32 scnt = 50;
	139
39c4e9c3	140	if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
e9ec3603	141	do_adj_guesttime(hosttime);
39c4e9c3 HZ	142	return;
	143	}
	144
e9ec3603	145	if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
39c4e9c3	146	scnt--;
e9ec3603	147	do_adj_guesttime(hosttime);
39c4e9c3	148	}
39c4e9c3 HZ	149	}
	150
	151	/*
	152	* Time Sync Channel message handler.
	153	*/
	154	static void timesync_onchannelcallback(void *context)
	155	{
	156	struct vmbus_channel *channel = context;
	157	u8 *buf;
	158	u32 buflen, recvlen;
	159	u64 requestid;
	160	struct icmsg_hdr *icmsghdrp;
	161	struct ictimesync_data *timedatap;
	162
	163	DPRINT_ENTER(VMBUS);
	164
	165	buflen = PAGE_SIZE;
	166	buf = kmalloc(buflen, GFP_ATOMIC);
	167
	168	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);
	169
	170	if (recvlen > 0) {
	171	DPRINT_DBG(VMBUS, "timesync packet: recvlen=%d, requestid=%lld",
	172	recvlen, requestid);
	173
	174	icmsghdrp = (struct icmsg_hdr *)&buf[
	175	sizeof(struct vmbuspipe_hdr)];
	176
	177	if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
	178	prep_negotiate_resp(icmsghdrp, NULL, buf);
	179	} else {
	180	timedatap = (struct ictimesync_data *)&buf[
	181	sizeof(struct vmbuspipe_hdr) +
	182	sizeof(struct icmsg_hdr)];
	183	adj_guesttime(timedatap->parenttime, timedatap->flags);
	184	}
	185
	186	icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
	187	\| ICMSGHDRFLAG_RESPONSE;
	188
	189	VmbusChannelSendPacket(channel, buf,
	190	recvlen, requestid,
	191	VmbusPacketTypeDataInBand, 0);
	192	}
	193
	194	kfree(buf);
	195
	196	DPRINT_EXIT(VMBUS);
	197	}
	198
9153f7b9 HJ	199	/*
	200	* Heartbeat functionality.
	201	* Every two seconds, Hyper-V send us a heartbeat request message.
	202	* we respond to this message, and Hyper-V knows we are alive.
	203	*/
	204	static void heartbeat_onchannelcallback(void *context)
	205	{
	206	struct vmbus_channel *channel = context;
	207	u8 *buf;
	208	u32 buflen, recvlen;
	209	u64 requestid;
	210	struct icmsg_hdr *icmsghdrp;
	211	struct heartbeat_msg_data *heartbeat_msg;
	212
	213	DPRINT_ENTER(VMBUS);
	214
	215	buflen = PAGE_SIZE;
	216	buf = kmalloc(buflen, GFP_ATOMIC);
	217
	218	VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);
	219
	220	if (recvlen > 0) {
	221	DPRINT_DBG(VMBUS, "heartbeat packet: len=%d, requestid=%lld",
	222	recvlen, requestid);
	223
	224	icmsghdrp = (struct icmsg_hdr *)&buf[
	225	sizeof(struct vmbuspipe_hdr)];
	226
	227	icmsghdrp = (struct icmsg_hdr *)&buf[
	228	sizeof(struct vmbuspipe_hdr)];
	229
	230	if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
	231	prep_negotiate_resp(icmsghdrp, NULL, buf);
	232	} else {
	233	heartbeat_msg = (struct heartbeat_msg_data *)&buf[
	234	sizeof(struct vmbuspipe_hdr) +
	235	sizeof(struct icmsg_hdr)];
	236
	237	DPRINT_DBG(VMBUS, "heartbeat seq = %lld",
	238	heartbeat_msg->seq_num);
	239
	240	heartbeat_msg->seq_num += 1;
	241	}
	242
	243	icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
	244	\| ICMSGHDRFLAG_RESPONSE;
	245
	246	VmbusChannelSendPacket(channel, buf,
	247	recvlen, requestid,
	248	VmbusPacketTypeDataInBand, 0);
	249	}
	250
	251	kfree(buf);
	252
	253	DPRINT_EXIT(VMBUS);
	254	}
39c4e9c3	255
d750785f HZ	256	static const struct pci_device_id __initconst
	257	hv_utils_pci_table[] __maybe_unused = {
	258	{ PCI_DEVICE(0x1414, 0x5353) }, /* Hyper-V emulated VGA controller */
	259	{ 0 }
	260	};
	261	MODULE_DEVICE_TABLE(pci, hv_utils_pci_table);
	262
	263
	264	static const struct dmi_system_id __initconst
	265	hv_utils_dmi_table[] __maybe_unused = {
	266	{
	267	.ident = "Hyper-V",
	268	.matches = {
	269	DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
	270	DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
	271	DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
	272	},
	273	},
	274	{ },
	275	};
	276	MODULE_DEVICE_TABLE(dmi, hv_utils_dmi_table);
	277
	278
c88c4e4c HJ	279	static int __init init_hyperv_utils(void)
	280	{
	281	printk(KERN_INFO "Registering HyperV Utility Driver\n");
	282
d750785f HZ	283	if (!dmi_check_system(hv_utils_dmi_table))
	284	return -ENODEV;
	285
c88c4e4c HJ	286	hv_cb_utils[HV_SHUTDOWN_MSG].channel->OnChannelCallback =
	287	&shutdown_onchannelcallback;
	288	hv_cb_utils[HV_SHUTDOWN_MSG].callback = &shutdown_onchannelcallback;
	289
39c4e9c3 HZ	290	hv_cb_utils[HV_TIMESYNC_MSG].channel->OnChannelCallback =
	291	&timesync_onchannelcallback;
	292	hv_cb_utils[HV_TIMESYNC_MSG].callback = &timesync_onchannelcallback;
	293
9153f7b9 HJ	294	hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
	295	&heartbeat_onchannelcallback;
	296	hv_cb_utils[HV_HEARTBEAT_MSG].callback = &heartbeat_onchannelcallback;
	297
c88c4e4c HJ	298	return 0;
	299	}
	300
	301	static void exit_hyperv_utils(void)
	302	{
	303	printk(KERN_INFO "De-Registered HyperV Utility Driver\n");
	304
	305	hv_cb_utils[HV_SHUTDOWN_MSG].channel->OnChannelCallback =
	306	&chn_cb_negotiate;
	307	hv_cb_utils[HV_SHUTDOWN_MSG].callback = &chn_cb_negotiate;
39c4e9c3 HZ	308
	309	hv_cb_utils[HV_TIMESYNC_MSG].channel->OnChannelCallback =
	310	&chn_cb_negotiate;
	311	hv_cb_utils[HV_TIMESYNC_MSG].callback = &chn_cb_negotiate;
9153f7b9 HJ	312
	313	hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
	314	&chn_cb_negotiate;
	315	hv_cb_utils[HV_HEARTBEAT_MSG].callback = &chn_cb_negotiate;
c88c4e4c HJ	316	}
	317
	318	module_init(init_hyperv_utils);
	319	module_exit(exit_hyperv_utils);
	320
	321	MODULE_DESCRIPTION("Hyper-V Utilities");
	322	MODULE_VERSION(HV_DRV_VERSION);
	323	MODULE_LICENSE("GPL");