2 * Copyright (c) 2009-2012,2016 Microsoft Corp.
3 * Copyright (c) 2012 NetApp Inc.
4 * Copyright (c) 2012 Citrix Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * HyperV definitions for messages that are sent between instances of the
33 * Channel Management Library in separate partitions, or in some cases,
40 #include <sys/param.h>
42 #include <sys/queue.h>
43 #include <sys/malloc.h>
44 #include <sys/kthread.h>
45 #include <sys/taskqueue.h>
46 #include <sys/systm.h>
50 #include <sys/mutex.h>
52 #include <sys/sysctl.h>
54 #include <vm/vm_param.h>
57 #include <amd64/include/xen/synch_bitops.h>
58 #include <amd64/include/atomic.h>
59 #include <dev/hyperv/include/hyperv_busdma.h>
62 * VMBUS version is 32 bit, upper 16 bit for major_number and lower
63 * 16 bit for minor_number.
65 * 0.13 -- Windows Server 2008
70 #define VMBUS_VERSION_WS2008 ((0 << 16) | (13))
71 #define VMBUS_VERSION_WIN7 ((1 << 16) | (1))
72 #define VMBUS_VERSION_WIN8 ((2 << 16) | (4))
73 #define VMBUS_VERSION_WIN8_1 ((3 << 16) | (0))
75 #define VMBUS_VERSION_MAJOR(ver) (((uint32_t)(ver)) >> 16)
76 #define VMBUS_VERSION_MINOR(ver) (((uint32_t)(ver)) & 0xffff)
82 #define HYPERV_GUID_STRLEN 40
84 int hyperv_guid2str(const struct hyperv_guid *, char *, size_t);
88 * offset in bytes from the start of ring data below
90 volatile uint32_t write_index;
92 * offset in bytes from the start of ring data below
94 volatile uint32_t read_index;
96 * NOTE: The interrupt_mask field is used only for channels, but
97 * vmbus connection also uses this data structure
99 volatile uint32_t interrupt_mask;
100 /* pad it to PAGE_SIZE so that data starts on a page */
101 uint8_t reserved[4084];
104 * WARNING: Ring data starts here
105 * !!! DO NOT place any fields below this !!!
107 uint8_t buffer[0]; /* doubles as interrupt mask */
108 } __packed hv_vmbus_ring_buffer;
111 hv_vmbus_ring_buffer* ring_buffer;
112 struct mtx ring_lock;
113 uint32_t ring_data_size; /* ring_size */
114 } hv_vmbus_ring_buffer_info;
116 struct hv_vmbus_channel;
118 typedef void (*vmbus_chan_callback_t)(struct hv_vmbus_channel *, void *);
120 typedef struct hv_vmbus_channel {
122 struct vmbus_softc *ch_vmbus;
123 uint32_t ch_flags; /* VMBUS_CHAN_FLAG_ */
124 uint32_t ch_id; /* channel id */
127 * These are based on the offer_msg.monitor_id.
128 * Save it here for easy access.
130 int ch_montrig_idx; /* MNF trig index */
131 uint32_t ch_montrig_mask;/* MNF trig mask */
134 * TX bufring; at the beginning of ch_bufring.
136 hv_vmbus_ring_buffer_info ch_txbr;
138 * RX bufring; immediately following ch_txbr.
140 hv_vmbus_ring_buffer_info ch_rxbr;
142 struct taskqueue *ch_tq;
144 vmbus_chan_callback_t ch_cb;
147 struct hyperv_mon_param *ch_monprm;
148 struct hyperv_dma ch_monprm_dma;
150 int ch_cpuid; /* owner cpu */
152 * Virtual cpuid for ch_cpuid; it is used to communicate cpuid
153 * related information w/ Hyper-V. If MSR_HV_VP_INDEX does not
154 * exist, ch_vcpuid will always be 0 for compatibility.
159 * If this is a primary channel, ch_subchan* fields
160 * contain sub-channels belonging to this primary
163 struct mtx ch_subchan_lock;
164 TAILQ_HEAD(, hv_vmbus_channel) ch_subchans;
167 /* If this is a sub-channel */
168 TAILQ_ENTRY(hv_vmbus_channel) ch_sublink; /* sub-channel link */
169 struct hv_vmbus_channel *ch_prichan; /* owner primary chan */
171 void *ch_bufring; /* TX+RX bufrings */
172 struct hyperv_dma ch_bufring_dma;
173 uint32_t ch_bufring_gpadl;
175 struct task ch_detach_task;
176 TAILQ_ENTRY(hv_vmbus_channel) ch_prilink; /* primary chan link */
177 uint32_t ch_subidx; /* subchan index */
178 volatile uint32_t ch_stflags; /* atomic-op */
180 struct hyperv_guid ch_guid_type;
181 struct hyperv_guid ch_guid_inst;
183 struct sysctl_ctx_list ch_sysctl_ctx;
186 #define VMBUS_CHAN_ISPRIMARY(chan) ((chan)->ch_subidx == 0)
188 #define VMBUS_CHAN_FLAG_HASMNF 0x0001
190 * If this flag is set, this channel's interrupt will be masked in ISR,
191 * and the RX bufring will be drained before this channel's interrupt is
194 * This flag is turned on by default. Drivers can turn it off according
195 * to their own requirement.
197 #define VMBUS_CHAN_FLAG_BATCHREAD 0x0002
199 #define VMBUS_CHAN_ST_OPENED_SHIFT 0
200 #define VMBUS_CHAN_ST_OPENED (1 << VMBUS_CHAN_ST_OPENED_SHIFT)
203 * @brief Get physical address from virtual
205 static inline unsigned long
206 hv_get_phys_addr(void *virt)
209 ret = (vtophys(virt) | ((vm_offset_t) virt & PAGE_MASK));
213 static __inline struct hv_vmbus_channel *
214 vmbus_get_channel(device_t dev)
216 return device_get_ivars(dev);
219 #endif /* __HYPERV_H__ */