2 * Copyright (c) 2016 Microsoft Corp.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
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.
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,
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20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/param.h>
33 #include <sys/bus_dma.h>
34 #include <dev/hyperv/include/hyperv_busdma.h>
36 struct 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 */
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);
51 void (*vmbus_event_proc)(struct vmbus_softc *, int);
52 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
54 /* Rarely used fields */
59 extern struct vmbus_softc *vmbus_sc;
61 static __inline struct vmbus_softc *
67 static __inline device_t
68 vmbus_get_device(void)
70 return vmbus_sc->vmbus_dev;
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
76 void vmbus_on_channel_open(const struct hv_vmbus_channel *);
77 void vmbus_event_proc(struct vmbus_softc *, int);
78 void vmbus_event_proc_compat(struct vmbus_softc *, int);
80 #endif /* !_VMBUS_VAR_H_ */