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/kernel.h>
34 #include <sys/taskqueue.h>
37 #include <dev/hyperv/include/hyperv_busdma.h>
38 #include <dev/pci/pcivar.h>
39 #include <dev/pci/pcib_private.h>
42 * NOTE: DO NOT CHANGE THIS.
44 #define VMBUS_SINT_MESSAGE 2
47 * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE.
48 * - DO NOT set it to 0.
50 #define VMBUS_SINT_TIMER 4
53 * NOTE: DO NOT CHANGE THESE
55 #define VMBUS_CONNID_MESSAGE 1
56 #define VMBUS_CONNID_EVENT 2
61 typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *,
62 const struct vmbus_message *);
64 #define VMBUS_CHANMSG_PROC(name, func) \
65 [VMBUS_CHANMSG_TYPE_##name] = func
66 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \
67 VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup)
69 struct vmbus_pcpu_data {
70 u_long *intr_cnt; /* Hyper-V interrupt counter */
71 struct vmbus_message *message; /* shared messages */
72 uint32_t vcpuid; /* virtual cpuid */
73 int event_flags_cnt;/* # of event flags */
74 struct vmbus_evtflags *event_flags; /* event flags from host */
76 /* Rarely used fields */
77 struct hyperv_dma message_dma; /* busdma glue */
78 struct hyperv_dma event_flags_dma;/* busdma glue */
79 struct taskqueue *event_tq; /* event taskq */
80 struct taskqueue *message_tq; /* message taskq */
81 struct task message_task; /* message task */
82 } __aligned(CACHE_LINE_SIZE);
84 #if __FreeBSD_version < 1100000
85 typedef u_long rman_res_t;
89 void (*vmbus_event_proc)(struct vmbus_softc *, int);
90 u_long *vmbus_tx_evtflags;
91 /* event flags to host */
92 struct vmbus_mnf *vmbus_mnf2; /* monitored by host */
94 u_long *vmbus_rx_evtflags;
95 /* compat evtflgs from host */
96 struct vmbus_channel *volatile *vmbus_chmap;
97 struct vmbus_xact_ctx *vmbus_xc;
98 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
106 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */
107 uint32_t vmbus_version;
108 uint32_t vmbus_gpadl;
110 /* Shared memory for vmbus_{rx,tx}_evtflags */
111 void *vmbus_evtflags;
112 struct hyperv_dma vmbus_evtflags_dma;
114 void *vmbus_mnf1; /* monitored by VM, unused */
115 struct hyperv_dma vmbus_mnf1_dma;
116 struct hyperv_dma vmbus_mnf2_dma;
119 struct task vmbus_scandone_task;
121 struct taskqueue *vmbus_devtq; /* for dev attach/detach */
122 struct taskqueue *vmbus_subchtq; /* for sub-chan attach/detach */
124 /* Primary channels */
125 struct mtx vmbus_prichan_lock;
126 TAILQ_HEAD(, vmbus_channel) vmbus_prichans;
128 /* Complete channel list */
129 struct mtx vmbus_chan_lock;
130 TAILQ_HEAD(, vmbus_channel) vmbus_chans;
132 struct intr_config_hook vmbus_intrhook;
135 /* The list of usable MMIO ranges for PCIe pass-through */
136 struct pcib_host_resources vmbus_mmio_res;
140 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */
141 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
143 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field
144 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field
146 struct vmbus_channel;
148 struct vmbus_message;
151 void vmbus_handle_intr(struct trapframe *);
152 int vmbus_add_child(struct vmbus_channel *);
153 int vmbus_delete_child(struct vmbus_channel *);
154 void vmbus_et_intr(struct trapframe *);
155 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *);
158 vmbus_msghc_get(struct vmbus_softc *, size_t);
159 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *);
160 void *vmbus_msghc_dataptr(struct vmbus_msghc *);
161 int vmbus_msghc_exec_noresult(struct vmbus_msghc *);
162 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *);
163 void vmbus_msghc_exec_cancel(struct vmbus_softc *,
164 struct vmbus_msghc *);
165 const struct vmbus_message *
166 vmbus_msghc_wait_result(struct vmbus_softc *,
167 struct vmbus_msghc *);
168 const struct vmbus_message *
169 vmbus_msghc_poll_result(struct vmbus_softc *,
170 struct vmbus_msghc *);
171 void vmbus_msghc_wakeup(struct vmbus_softc *,
172 const struct vmbus_message *);
173 void vmbus_msghc_reset(struct vmbus_msghc *, size_t);
175 #endif /* !_VMBUS_VAR_H_ */