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,
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.
32 #include <sys/param.h>
34 struct vmbus_pcpu_data
{
35 struct vmbus_message
*message
; /* shared messages */
36 int event_flags_cnt
;/* # of event flags */
37 struct vmbus_evtflags
*event_flags
; /* event flags from host */
39 struct vmbus_softc
*sc
;
49 struct hyperv_dma message_dma
; /* busdma glue */
50 struct hyperv_dma event_flags_dma
;/* busdma glue */
52 /* Interrupt stuffs */
54 struct resource
*intr_res
;
62 u_long
*vmbus_tx_evtflags
;
63 /* event flags to host */
64 void *vmbus_mnf2
; /* monitored by host */
66 u_long
*vmbus_rx_evtflags
;
67 /* compat evtflgs from host */
68 struct vmbus_pcpu_data vmbus_pcpu
[MAXCPU
];
75 struct vmbus_msghc_ctx
*vmbus_msg_hc
;
76 uint32_t vmbus_flags
; /* see VMBUS_FLAG_ */
77 uint32_t vmbus_version
; /* VMBUS_VERSION_ */
79 /* Shared memory for vmbus_{rx,tx}_evtflags */
81 struct hyperv_dma vmbus_evtflags_dma
;
83 void *vmbus_mnf1
; /* monitored by VM, unused */
84 struct hyperv_dma vmbus_mnf1_dma
;
85 struct hyperv_dma vmbus_mnf2_dma
;
88 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
90 #define VMBUS_PCPU(sc, cpu) &(sc)->vmbus_pcpu[(cpu)]
95 struct vmbus_msghc
*vmbus_msghc_get(struct vmbus_softc
*, size_t);
96 void vmbus_msghc_put(struct vmbus_softc
*, struct vmbus_msghc
*);
97 void *vmbus_msghc_dataptr(struct vmbus_msghc
*);
98 int vmbus_msghc_exec_noresult(struct vmbus_msghc
*);
99 int vmbus_msghc_exec(struct vmbus_softc
*, struct vmbus_msghc
*);
100 const struct vmbus_message
*vmbus_msghc_wait_result(struct vmbus_softc
*,
101 struct vmbus_msghc
*);
102 void vmbus_msghc_wakeup(struct vmbus_softc
*, const struct vmbus_message
*);
104 #endif /* !_VMBUS_VAR_H_ */