ca871fb75c
The prepares to kill device private fields in channel struct, which are not flexible and extensible. MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7243
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*-
|
|
* Copyright (c) 2014,2016 Microsoft Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* A common driver for all hyper-V util services.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/timetc.h>
|
|
#include <sys/syscallsubr.h>
|
|
|
|
#include <dev/hyperv/include/hyperv.h>
|
|
#include <dev/hyperv/include/vmbus.h>
|
|
#include <dev/hyperv/utilities/hv_utilreg.h>
|
|
#include "hv_util.h"
|
|
#include "vmbus_if.h"
|
|
|
|
static const struct hyperv_guid service_guid = { .hv_guid =
|
|
{0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49,
|
|
0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB} };
|
|
|
|
/**
|
|
* Shutdown
|
|
*/
|
|
static void
|
|
hv_shutdown_cb(struct hv_vmbus_channel *channel, void *context)
|
|
{
|
|
uint8_t* buf;
|
|
uint8_t execute_shutdown = 0;
|
|
hv_vmbus_icmsg_hdr* icmsghdrp;
|
|
uint32_t recv_len;
|
|
uint64_t request_id;
|
|
int ret;
|
|
hv_vmbus_shutdown_msg_data* shutdown_msg;
|
|
hv_util_sc *softc;
|
|
|
|
softc = (hv_util_sc*)context;
|
|
buf = softc->receive_buffer;
|
|
|
|
recv_len = PAGE_SIZE;
|
|
ret = vmbus_chan_recv(channel, buf, &recv_len, &request_id);
|
|
KASSERT(ret != ENOBUFS, ("hvshutdown recvbuf is not large enough"));
|
|
/* XXX check recv_len to make sure that it contains enough data */
|
|
|
|
if ((ret == 0) && recv_len > 0) {
|
|
|
|
icmsghdrp = (struct hv_vmbus_icmsg_hdr *)
|
|
&buf[sizeof(struct hv_vmbus_pipe_hdr)];
|
|
|
|
if (icmsghdrp->icmsgtype == HV_ICMSGTYPE_NEGOTIATE) {
|
|
hv_negotiate_version(icmsghdrp, NULL, buf);
|
|
|
|
} else {
|
|
shutdown_msg =
|
|
(struct hv_vmbus_shutdown_msg_data *)
|
|
&buf[sizeof(struct hv_vmbus_pipe_hdr) +
|
|
sizeof(struct hv_vmbus_icmsg_hdr)];
|
|
|
|
switch (shutdown_msg->flags) {
|
|
case 0:
|
|
case 1:
|
|
icmsghdrp->status = HV_S_OK;
|
|
execute_shutdown = 1;
|
|
if(bootverbose)
|
|
printf("Shutdown request received -"
|
|
" graceful shutdown initiated\n");
|
|
break;
|
|
default:
|
|
icmsghdrp->status = HV_E_FAIL;
|
|
execute_shutdown = 0;
|
|
printf("Shutdown request received -"
|
|
" Invalid request\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
icmsghdrp->icflags = HV_ICMSGHDRFLAG_TRANSACTION |
|
|
HV_ICMSGHDRFLAG_RESPONSE;
|
|
|
|
vmbus_chan_send(channel, VMBUS_CHANPKT_TYPE_INBAND, 0,
|
|
buf, recv_len, request_id);
|
|
}
|
|
|
|
if (execute_shutdown)
|
|
shutdown_nice(RB_POWEROFF);
|
|
}
|
|
|
|
static int
|
|
hv_shutdown_probe(device_t dev)
|
|
{
|
|
if (resource_disabled("hvshutdown", 0))
|
|
return ENXIO;
|
|
|
|
if (VMBUS_PROBE_GUID(device_get_parent(dev), dev, &service_guid) == 0) {
|
|
device_set_desc(dev, "Hyper-V Shutdown Service");
|
|
return BUS_PROBE_DEFAULT;
|
|
}
|
|
return ENXIO;
|
|
}
|
|
|
|
static int
|
|
hv_shutdown_attach(device_t dev)
|
|
{
|
|
hv_util_sc *softc = (hv_util_sc*)device_get_softc(dev);
|
|
|
|
softc->callback = hv_shutdown_cb;
|
|
|
|
return hv_util_attach(dev);
|
|
}
|
|
|
|
static device_method_t shutdown_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, hv_shutdown_probe),
|
|
DEVMETHOD(device_attach, hv_shutdown_attach),
|
|
DEVMETHOD(device_detach, hv_util_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t shutdown_driver = { "hvshutdown", shutdown_methods, sizeof(hv_util_sc)};
|
|
|
|
static devclass_t shutdown_devclass;
|
|
|
|
DRIVER_MODULE(hv_shutdown, vmbus, shutdown_driver, shutdown_devclass, NULL, NULL);
|
|
MODULE_VERSION(hv_shutdown, 1);
|
|
MODULE_DEPEND(hv_shutdown, vmbus, 1, 1, 1);
|