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
49 * NOTE: DO NOT CHANGE THESE
51 #define VMBUS_CONNID_MESSAGE 1
52 #define VMBUS_CONNID_EVENT 2
57 typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *,
58 const struct vmbus_message *);
60 #define VMBUS_CHANMSG_PROC(name, func) \
61 [VMBUS_CHANMSG_TYPE_##name] = func
62 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \
63 VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup)
65 struct vmbus_pcpu_data {
66 u_long *intr_cnt; /* Hyper-V interrupt counter */
67 struct vmbus_message *message; /* shared messages */
68 uint32_t vcpuid; /* virtual cpuid */
69 int event_flags_cnt;/* # of event flags */
70 struct vmbus_evtflags *event_flags; /* event flags from host */
72 /* Rarely used fields */
73 struct hyperv_dma message_dma; /* busdma glue */
74 struct hyperv_dma event_flags_dma;/* busdma glue */
75 struct taskqueue *event_tq; /* event taskq */
76 struct taskqueue *message_tq; /* message taskq */
77 struct task message_task; /* message task */
78 } __aligned(CACHE_LINE_SIZE);
81 void (*vmbus_event_proc)(struct vmbus_softc *, int);
82 u_long *vmbus_tx_evtflags;
83 /* event flags to host */
84 struct vmbus_mnf *vmbus_mnf2; /* monitored by host */
86 u_long *vmbus_rx_evtflags;
87 /* compat evtflgs from host */
88 struct vmbus_channel **vmbus_chmap;
89 struct vmbus_msghc_ctx *vmbus_msg_hc;
90 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
98 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */
99 uint32_t vmbus_version;
100 uint32_t vmbus_gpadl;
102 /* Shared memory for vmbus_{rx,tx}_evtflags */
103 void *vmbus_evtflags;
104 struct hyperv_dma vmbus_evtflags_dma;
106 void *vmbus_mnf1; /* monitored by VM, unused */
107 struct hyperv_dma vmbus_mnf1_dma;
108 struct hyperv_dma vmbus_mnf2_dma;
110 struct mtx vmbus_scan_lock;
111 uint32_t vmbus_scan_chcnt;
112 #define VMBUS_SCAN_CHCNT_DONE 0x80000000
113 uint32_t vmbus_scan_devcnt;
115 /* Primary channels */
116 struct mtx vmbus_prichan_lock;
117 TAILQ_HEAD(, vmbus_channel) vmbus_prichans;
120 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */
121 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
123 extern struct vmbus_softc *vmbus_sc;
125 static __inline struct vmbus_softc *
126 vmbus_get_softc(void)
131 static __inline device_t
132 vmbus_get_device(void)
134 return vmbus_sc->vmbus_dev;
137 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field
138 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field
140 struct vmbus_channel;
142 struct vmbus_message;
145 void vmbus_handle_intr(struct trapframe *);
146 int vmbus_add_child(struct vmbus_channel *);
147 int vmbus_delete_child(struct vmbus_channel *);
148 void vmbus_et_intr(struct trapframe *);
149 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *);
151 struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t);
152 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *);
153 void *vmbus_msghc_dataptr(struct vmbus_msghc *);
154 int vmbus_msghc_exec_noresult(struct vmbus_msghc *);
155 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *);
156 const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *,
157 struct vmbus_msghc *);
158 void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *);
159 void vmbus_msghc_reset(struct vmbus_msghc *, size_t);
161 #endif /* !_VMBUS_VAR_H_ */