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
54 struct vmbus_pcpu_data {
55 u_long *intr_cnt; /* Hyper-V interrupt counter */
56 struct vmbus_message *message; /* shared messages */
57 uint32_t vcpuid; /* virtual cpuid */
58 int event_flags_cnt;/* # of event flags */
59 struct vmbus_evtflags *event_flags; /* event flags from host */
61 /* Rarely used fields */
62 struct hyperv_dma message_dma; /* busdma glue */
63 struct hyperv_dma event_flags_dma;/* busdma glue */
64 struct taskqueue *event_tq; /* event taskq */
65 struct taskqueue *message_tq; /* message taskq */
66 struct task message_task; /* message task */
67 } __aligned(CACHE_LINE_SIZE);
70 void (*vmbus_event_proc)(struct vmbus_softc *, int);
71 u_long *vmbus_tx_evtflags;
72 /* event flags to host */
73 void *vmbus_mnf2; /* monitored by host */
75 u_long *vmbus_rx_evtflags;
76 /* compat evtflgs from host */
77 struct hv_vmbus_channel **vmbus_chmap;
78 struct vmbus_msghc_ctx *vmbus_msg_hc;
79 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
87 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */
88 uint32_t vmbus_version;
91 /* Shared memory for vmbus_{rx,tx}_evtflags */
93 struct hyperv_dma vmbus_evtflags_dma;
95 void *vmbus_mnf1; /* monitored by VM, unused */
96 struct hyperv_dma vmbus_mnf1_dma;
97 struct hyperv_dma vmbus_mnf2_dma;
99 struct mtx vmbus_scan_lock;
100 uint32_t vmbus_scan_chcnt;
101 #define VMBUS_SCAN_CHCNT_DONE 0x80000000
102 uint32_t vmbus_scan_devcnt;
104 struct mtx vmbus_chlist_lock;
105 TAILQ_HEAD(, hv_vmbus_channel) vmbus_chlist;
108 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */
109 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
111 extern struct vmbus_softc *vmbus_sc;
113 static __inline struct vmbus_softc *
114 vmbus_get_softc(void)
119 static __inline device_t
120 vmbus_get_device(void)
122 return vmbus_sc->vmbus_dev;
125 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field
126 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field
128 struct hv_vmbus_channel;
130 struct vmbus_message;
133 void vmbus_event_proc(struct vmbus_softc *, int);
134 void vmbus_event_proc_compat(struct vmbus_softc *, int);
135 void vmbus_handle_intr(struct trapframe *);
137 void vmbus_et_intr(struct trapframe *);
139 void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *);
141 struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t);
142 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *);
143 void *vmbus_msghc_dataptr(struct vmbus_msghc *);
144 int vmbus_msghc_exec_noresult(struct vmbus_msghc *);
145 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *);
146 const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *,
147 struct vmbus_msghc *);
148 void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *);
149 void vmbus_msghc_reset(struct vmbus_msghc *, size_t);
151 void vmbus_scan_done(struct vmbus_softc *);
152 void vmbus_scan_newchan(struct vmbus_softc *);
154 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *);
156 #endif /* !_VMBUS_VAR_H_ */