vmbus_var.h revision 302126 
1/*-
2 * Copyright (c) 2016 Microsoft Corp.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/dev/hyperv/vmbus/vmbus_var.h 302126 2016-06-23 07:36:03Z sephe $
27 */
28
29#ifndef _VMBUS_VAR_H_
30#define _VMBUS_VAR_H_
31
32#include <sys/param.h>
33#include <sys/bus_dma.h>
34#include <dev/hyperv/include/hyperv_busdma.h>
35
36struct vmbus_pcpu_data {
37	u_long			*intr_cnt;	/* Hyper-V interrupt counter */
38	struct vmbus_message	*message;	/* shared messages */
39	int			event_flag_cnt;	/* # of event flags */
40	union vmbus_event_flags	*event_flag;	/* shared event flags */
41
42	/* Rarely used fields */
43	struct hyperv_dma	message_dma;	/* busdma glue */
44	struct hyperv_dma	event_flag_dma;	/* busdma glue */
45	struct taskqueue	*event_tq;	/* event taskq */
46	struct taskqueue	*message_tq;	/* message taskq */
47	struct task		message_task;	/* message task */
48} __aligned(CACHE_LINE_SIZE);
49
50struct vmbus_softc {
51	void			(*vmbus_event_proc)(struct vmbus_softc *, int);
52	struct vmbus_pcpu_data	vmbus_pcpu[MAXCPU];
53
54	/* Rarely used fields */
55	device_t		vmbus_dev;
56	int			vmbus_idtvec;
57};
58
59extern struct vmbus_softc	*vmbus_sc;
60
61static __inline struct vmbus_softc *
62vmbus_get_softc(void)
63{
64	return vmbus_sc;
65}
66
67static __inline device_t
68vmbus_get_device(void)
69{
70	return vmbus_sc->vmbus_dev;
71}
72
73#define VMBUS_PCPU_GET(sc, field, cpu)	(sc)->vmbus_pcpu[(cpu)].field
74#define VMBUS_PCPU_PTR(sc, field, cpu)	&(sc)->vmbus_pcpu[(cpu)].field
75
76void	vmbus_on_channel_open(const struct hv_vmbus_channel *);
77void	vmbus_event_proc(struct vmbus_softc *, int);
78void	vmbus_event_proc_compat(struct vmbus_softc *, int);
79
80#endif	/* !_VMBUS_VAR_H_ */
81