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>
33 #include <sys/taskqueue.h>
35 #include <dev/hyperv/include/hyperv_busdma.h>
38 * NOTE: DO NOT CHANGE THIS.
40 #define VMBUS_SINT_MESSAGE 2
43 * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE.
44 * - DO NOT set it to 0.
46 #define VMBUS_SINT_TIMER 4
48 struct vmbus_pcpu_data {
49 u_long *intr_cnt; /* Hyper-V interrupt counter */
50 struct vmbus_message *message; /* shared messages */
51 uint32_t vcpuid; /* virtual cpuid */
52 int event_flags_cnt;/* # of event flags */
53 struct vmbus_evtflags *event_flags; /* event flags from host */
55 /* Rarely used fields */
56 struct hyperv_dma message_dma; /* busdma glue */
57 struct hyperv_dma event_flags_dma;/* busdma glue */
58 struct taskqueue *event_tq; /* event taskq */
59 struct taskqueue *message_tq; /* message taskq */
60 struct task message_task; /* message task */
61 } __aligned(CACHE_LINE_SIZE);
64 void (*vmbus_event_proc)(struct vmbus_softc *, int);
65 u_long *vmbus_tx_evtflags;
66 /* event flags to host */
67 void *vmbus_mnf2; /* monitored by host */
69 u_long *vmbus_rx_evtflags;
70 /* compat evtflgs from host */
71 struct vmbus_msghc_ctx *vmbus_msg_hc;
72 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
74 /* Rarely used fields */
77 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */
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;
87 struct mtx vmbus_scan_lock;
88 uint32_t vmbus_scan_chcnt;
89 #define VMBUS_SCAN_CHCNT_DONE 0x80000000
90 uint32_t vmbus_scan_devcnt;
93 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */
94 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
96 extern struct vmbus_softc *vmbus_sc;
98 static __inline struct vmbus_softc *
104 static __inline device_t
105 vmbus_get_device(void)
107 return vmbus_sc->vmbus_dev;
110 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field
111 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field
113 struct hv_vmbus_channel;
115 struct vmbus_message;
118 void vmbus_on_channel_open(const struct hv_vmbus_channel *);
119 void vmbus_event_proc(struct vmbus_softc *, int);
120 void vmbus_event_proc_compat(struct vmbus_softc *, int);
121 void vmbus_handle_intr(struct trapframe *);
123 void vmbus_et_intr(struct trapframe *);
125 void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *);
127 struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t);
128 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *);
129 void *vmbus_msghc_dataptr(struct vmbus_msghc *);
130 int vmbus_msghc_exec_noresult(struct vmbus_msghc *);
131 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *);
132 const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *,
133 struct vmbus_msghc *);
134 void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *);
136 void vmbus_scan_done(struct vmbus_softc *);
137 void vmbus_scan_newchan(struct vmbus_softc *);
139 #endif /* !_VMBUS_VAR_H_ */