hyperv/utils: Code rearrange and cleanup

Split heartbeat, shutdown and timesync out of utils code
and name them properly.

Submitted by:	Jun Su <junsu microsoft com>
Reviewed by:	adrian, sephe, Hongjiang Zhang <honzhan microsoft com>
MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D5216

1 files changed, 151 insertions, 0 deletions

diff --git a/sys/dev/hyperv/utilities/hv_shutdown.c b/sys/dev/hyperv/utilities/hv_shutdown.c
new file mode 100644
index 0000000..20bc65e
--- /dev/null
+++ b/sys/dev/hyperv/utilities/hv_shutdown.c
@@ -0,0 +1,151 @@
+/*-
+ * Copyright (c) 2014 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 "hv_util.h"
+
+static hv_guid service_guid = { .data =
+	{0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49,
+	0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB} };
+
+/**
+ * Shutdown
+ */
+static void
+hv_shutdown_cb(void *context)
+{
+	uint8_t*			buf;
+	hv_vmbus_channel*		channel;
+	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;;
+	channel = softc->hv_dev->channel;
+	ret = hv_vmbus_channel_recv_packet(channel, buf, PAGE_SIZE,
+					    &recv_len, &request_id);
+
+	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;
+
+	    hv_vmbus_channel_send_packet(channel, buf,
+					recv_len, request_id,
+					HV_VMBUS_PACKET_TYPE_DATA_IN_BAND, 0);
+	}
+
+	if (execute_shutdown)
+	    shutdown_nice(RB_POWEROFF);
+}
+
+static int
+hv_shutdown_probe(device_t dev)
+{
+	const char *p = vmbus_get_type(dev);
+	if (!memcmp(p, &service_guid, sizeof(hv_guid))) {
+		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);