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0f2a6619 S |
1 | /* |
2 | * | |
3 | * Copyright (c) 2011, Microsoft Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
16 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
17 | * | |
18 | * Authors: | |
19 | * Haiyang Zhang <haiyangz@microsoft.com> | |
20 | * Hank Janssen <hjanssen@microsoft.com> | |
21 | * K. Y. Srinivasan <kys@microsoft.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #ifndef _HYPERV_VMBUS_H | |
26 | #define _HYPERV_VMBUS_H | |
27 | ||
43c698b9 S |
28 | #include <linux/list.h> |
29 | #include <asm/sync_bitops.h> | |
30 | #include <linux/atomic.h> | |
46a97191 | 31 | #include <linux/hyperv.h> |
43c698b9 | 32 | |
afbdc4a9 S |
33 | /* |
34 | * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent | |
35 | * is set by CPUID(HVCPUID_VERSION_FEATURES). | |
36 | */ | |
37 | enum hv_cpuid_function { | |
38 | HVCPUID_VERSION_FEATURES = 0x00000001, | |
39 | HVCPUID_VENDOR_MAXFUNCTION = 0x40000000, | |
40 | HVCPUID_INTERFACE = 0x40000001, | |
41 | ||
42 | /* | |
43 | * The remaining functions depend on the value of | |
44 | * HVCPUID_INTERFACE | |
45 | */ | |
46 | HVCPUID_VERSION = 0x40000002, | |
47 | HVCPUID_FEATURES = 0x40000003, | |
48 | HVCPUID_ENLIGHTENMENT_INFO = 0x40000004, | |
49 | HVCPUID_IMPLEMENTATION_LIMITS = 0x40000005, | |
50 | }; | |
51 | ||
52 | /* Define version of the synthetic interrupt controller. */ | |
53 | #define HV_SYNIC_VERSION (1) | |
54 | ||
55 | /* Define the expected SynIC version. */ | |
56 | #define HV_SYNIC_VERSION_1 (0x1) | |
57 | ||
58 | /* Define synthetic interrupt controller message constants. */ | |
59 | #define HV_MESSAGE_SIZE (256) | |
60 | #define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240) | |
61 | #define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30) | |
62 | #define HV_ANY_VP (0xFFFFFFFF) | |
63 | ||
64 | /* Define synthetic interrupt controller flag constants. */ | |
65 | #define HV_EVENT_FLAGS_COUNT (256 * 8) | |
66 | #define HV_EVENT_FLAGS_BYTE_COUNT (256) | |
67 | #define HV_EVENT_FLAGS_DWORD_COUNT (256 / sizeof(u32)) | |
68 | ||
69 | /* Define hypervisor message types. */ | |
70 | enum hv_message_type { | |
71 | HVMSG_NONE = 0x00000000, | |
72 | ||
73 | /* Memory access messages. */ | |
74 | HVMSG_UNMAPPED_GPA = 0x80000000, | |
75 | HVMSG_GPA_INTERCEPT = 0x80000001, | |
76 | ||
77 | /* Timer notification messages. */ | |
78 | HVMSG_TIMER_EXPIRED = 0x80000010, | |
79 | ||
80 | /* Error messages. */ | |
81 | HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020, | |
82 | HVMSG_UNRECOVERABLE_EXCEPTION = 0x80000021, | |
83 | HVMSG_UNSUPPORTED_FEATURE = 0x80000022, | |
84 | ||
85 | /* Trace buffer complete messages. */ | |
86 | HVMSG_EVENTLOG_BUFFERCOMPLETE = 0x80000040, | |
87 | ||
88 | /* Platform-specific processor intercept messages. */ | |
89 | HVMSG_X64_IOPORT_INTERCEPT = 0x80010000, | |
90 | HVMSG_X64_MSR_INTERCEPT = 0x80010001, | |
91 | HVMSG_X64_CPUID_INTERCEPT = 0x80010002, | |
92 | HVMSG_X64_EXCEPTION_INTERCEPT = 0x80010003, | |
93 | HVMSG_X64_APIC_EOI = 0x80010004, | |
94 | HVMSG_X64_LEGACY_FP_ERROR = 0x80010005 | |
95 | }; | |
96 | ||
97 | /* Define the number of synthetic interrupt sources. */ | |
98 | #define HV_SYNIC_SINT_COUNT (16) | |
99 | #define HV_SYNIC_STIMER_COUNT (4) | |
100 | ||
101 | /* Define invalid partition identifier. */ | |
102 | #define HV_PARTITION_ID_INVALID ((u64)0x0) | |
103 | ||
104 | /* Define connection identifier type. */ | |
105 | union hv_connection_id { | |
106 | u32 asu32; | |
107 | struct { | |
108 | u32 id:24; | |
109 | u32 reserved:8; | |
110 | } u; | |
111 | }; | |
112 | ||
113 | /* Define port identifier type. */ | |
114 | union hv_port_id { | |
115 | u32 asu32; | |
116 | struct { | |
117 | u32 id:24; | |
118 | u32 reserved:8; | |
119 | } u ; | |
120 | }; | |
121 | ||
122 | /* Define port type. */ | |
123 | enum hv_port_type { | |
124 | HVPORT_MSG = 1, | |
125 | HVPORT_EVENT = 2, | |
126 | HVPORT_MONITOR = 3 | |
127 | }; | |
128 | ||
129 | /* Define port information structure. */ | |
130 | struct hv_port_info { | |
131 | enum hv_port_type port_type; | |
132 | u32 padding; | |
133 | union { | |
134 | struct { | |
135 | u32 target_sint; | |
136 | u32 target_vp; | |
137 | u64 rsvdz; | |
138 | } message_port_info; | |
139 | struct { | |
140 | u32 target_sint; | |
141 | u32 target_vp; | |
142 | u16 base_flag_bumber; | |
143 | u16 flag_count; | |
144 | u32 rsvdz; | |
145 | } event_port_info; | |
146 | struct { | |
147 | u64 monitor_address; | |
148 | u64 rsvdz; | |
149 | } monitor_port_info; | |
150 | }; | |
151 | }; | |
152 | ||
153 | struct hv_connection_info { | |
154 | enum hv_port_type port_type; | |
155 | u32 padding; | |
156 | union { | |
157 | struct { | |
158 | u64 rsvdz; | |
159 | } message_connection_info; | |
160 | struct { | |
161 | u64 rsvdz; | |
162 | } event_connection_info; | |
163 | struct { | |
164 | u64 monitor_address; | |
165 | } monitor_connection_info; | |
166 | }; | |
167 | }; | |
168 | ||
169 | /* Define synthetic interrupt controller message flags. */ | |
170 | union hv_message_flags { | |
171 | u8 asu8; | |
172 | struct { | |
173 | u8 msg_pending:1; | |
174 | u8 reserved:7; | |
175 | }; | |
176 | }; | |
177 | ||
178 | /* Define synthetic interrupt controller message header. */ | |
179 | struct hv_message_header { | |
180 | enum hv_message_type message_type; | |
181 | u8 payload_size; | |
182 | union hv_message_flags message_flags; | |
183 | u8 reserved[2]; | |
184 | union { | |
185 | u64 sender; | |
186 | union hv_port_id port; | |
187 | }; | |
188 | }; | |
189 | ||
190 | /* Define timer message payload structure. */ | |
191 | struct hv_timer_message_payload { | |
192 | u32 timer_index; | |
193 | u32 reserved; | |
194 | u64 expiration_time; /* When the timer expired */ | |
195 | u64 delivery_time; /* When the message was delivered */ | |
196 | }; | |
197 | ||
198 | /* Define synthetic interrupt controller message format. */ | |
199 | struct hv_message { | |
200 | struct hv_message_header header; | |
201 | union { | |
202 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; | |
203 | } u ; | |
204 | }; | |
205 | ||
206 | /* Define the number of message buffers associated with each port. */ | |
207 | #define HV_PORT_MESSAGE_BUFFER_COUNT (16) | |
208 | ||
209 | /* Define the synthetic interrupt message page layout. */ | |
210 | struct hv_message_page { | |
211 | struct hv_message sint_message[HV_SYNIC_SINT_COUNT]; | |
212 | }; | |
213 | ||
214 | /* Define the synthetic interrupt controller event flags format. */ | |
215 | union hv_synic_event_flags { | |
216 | u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT]; | |
217 | u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT]; | |
218 | }; | |
219 | ||
220 | /* Define the synthetic interrupt flags page layout. */ | |
221 | struct hv_synic_event_flags_page { | |
222 | union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT]; | |
223 | }; | |
224 | ||
225 | /* Define SynIC control register. */ | |
226 | union hv_synic_scontrol { | |
227 | u64 as_uint64; | |
228 | struct { | |
229 | u64 enable:1; | |
230 | u64 reserved:63; | |
231 | }; | |
232 | }; | |
233 | ||
234 | /* Define synthetic interrupt source. */ | |
235 | union hv_synic_sint { | |
236 | u64 as_uint64; | |
237 | struct { | |
238 | u64 vector:8; | |
239 | u64 reserved1:8; | |
240 | u64 masked:1; | |
241 | u64 auto_eoi:1; | |
242 | u64 reserved2:46; | |
243 | }; | |
244 | }; | |
245 | ||
246 | /* Define the format of the SIMP register */ | |
247 | union hv_synic_simp { | |
248 | u64 as_uint64; | |
249 | struct { | |
250 | u64 simp_enabled:1; | |
251 | u64 preserved:11; | |
252 | u64 base_simp_gpa:52; | |
253 | }; | |
254 | }; | |
255 | ||
256 | /* Define the format of the SIEFP register */ | |
257 | union hv_synic_siefp { | |
258 | u64 as_uint64; | |
259 | struct { | |
260 | u64 siefp_enabled:1; | |
261 | u64 preserved:11; | |
262 | u64 base_siefp_gpa:52; | |
263 | }; | |
264 | }; | |
265 | ||
266 | /* Definitions for the monitored notification facility */ | |
267 | union hv_monitor_trigger_group { | |
268 | u64 as_uint64; | |
269 | struct { | |
270 | u32 pending; | |
271 | u32 armed; | |
272 | }; | |
273 | }; | |
274 | ||
275 | struct hv_monitor_parameter { | |
276 | union hv_connection_id connectionid; | |
277 | u16 flagnumber; | |
278 | u16 rsvdz; | |
279 | }; | |
280 | ||
281 | union hv_monitor_trigger_state { | |
282 | u32 asu32; | |
283 | ||
284 | struct { | |
285 | u32 group_enable:4; | |
286 | u32 rsvdz:28; | |
287 | }; | |
288 | }; | |
289 | ||
290 | /* struct hv_monitor_page Layout */ | |
291 | /* ------------------------------------------------------ */ | |
292 | /* | 0 | TriggerState (4 bytes) | Rsvd1 (4 bytes) | */ | |
293 | /* | 8 | TriggerGroup[0] | */ | |
294 | /* | 10 | TriggerGroup[1] | */ | |
295 | /* | 18 | TriggerGroup[2] | */ | |
296 | /* | 20 | TriggerGroup[3] | */ | |
297 | /* | 28 | Rsvd2[0] | */ | |
298 | /* | 30 | Rsvd2[1] | */ | |
299 | /* | 38 | Rsvd2[2] | */ | |
300 | /* | 40 | NextCheckTime[0][0] | NextCheckTime[0][1] | */ | |
301 | /* | ... | */ | |
302 | /* | 240 | Latency[0][0..3] | */ | |
303 | /* | 340 | Rsvz3[0] | */ | |
304 | /* | 440 | Parameter[0][0] | */ | |
305 | /* | 448 | Parameter[0][1] | */ | |
306 | /* | ... | */ | |
307 | /* | 840 | Rsvd4[0] | */ | |
308 | /* ------------------------------------------------------ */ | |
309 | struct hv_monitor_page { | |
310 | union hv_monitor_trigger_state trigger_state; | |
311 | u32 rsvdz1; | |
312 | ||
313 | union hv_monitor_trigger_group trigger_group[4]; | |
314 | u64 rsvdz2[3]; | |
315 | ||
316 | s32 next_checktime[4][32]; | |
317 | ||
318 | u16 latency[4][32]; | |
319 | u64 rsvdz3[32]; | |
320 | ||
321 | struct hv_monitor_parameter parameter[4][32]; | |
322 | ||
323 | u8 rsvdz4[1984]; | |
324 | }; | |
325 | ||
326 | /* Declare the various hypercall operations. */ | |
327 | enum hv_call_code { | |
328 | HVCALL_POST_MESSAGE = 0x005c, | |
329 | HVCALL_SIGNAL_EVENT = 0x005d, | |
330 | }; | |
331 | ||
332 | /* Definition of the hv_post_message hypercall input structure. */ | |
333 | struct hv_input_post_message { | |
334 | union hv_connection_id connectionid; | |
335 | u32 reserved; | |
336 | enum hv_message_type message_type; | |
337 | u32 payload_size; | |
338 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; | |
339 | }; | |
340 | ||
341 | /* Definition of the hv_signal_event hypercall input structure. */ | |
342 | struct hv_input_signal_event { | |
343 | union hv_connection_id connectionid; | |
344 | u16 flag_number; | |
345 | u16 rsvdz; | |
346 | }; | |
347 | ||
348 | /* | |
349 | * Versioning definitions used for guests reporting themselves to the | |
350 | * hypervisor, and visa versa. | |
351 | */ | |
352 | ||
353 | /* Version info reported by guest OS's */ | |
354 | enum hv_guest_os_vendor { | |
355 | HVGUESTOS_VENDOR_MICROSOFT = 0x0001 | |
356 | }; | |
357 | ||
358 | enum hv_guest_os_microsoft_ids { | |
359 | HVGUESTOS_MICROSOFT_UNDEFINED = 0x00, | |
360 | HVGUESTOS_MICROSOFT_MSDOS = 0x01, | |
361 | HVGUESTOS_MICROSOFT_WINDOWS3X = 0x02, | |
362 | HVGUESTOS_MICROSOFT_WINDOWS9X = 0x03, | |
363 | HVGUESTOS_MICROSOFT_WINDOWSNT = 0x04, | |
364 | HVGUESTOS_MICROSOFT_WINDOWSCE = 0x05 | |
365 | }; | |
366 | ||
367 | /* | |
368 | * Declare the MSR used to identify the guest OS. | |
369 | */ | |
370 | #define HV_X64_MSR_GUEST_OS_ID 0x40000000 | |
371 | ||
372 | union hv_x64_msr_guest_os_id_contents { | |
373 | u64 as_uint64; | |
374 | struct { | |
375 | u64 build_number:16; | |
376 | u64 service_version:8; /* Service Pack, etc. */ | |
377 | u64 minor_version:8; | |
378 | u64 major_version:8; | |
379 | u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */ | |
380 | u64 vendor_id:16; /* enum hv_guest_os_vendor */ | |
381 | }; | |
382 | }; | |
383 | ||
384 | /* | |
385 | * Declare the MSR used to setup pages used to communicate with the hypervisor. | |
386 | */ | |
387 | #define HV_X64_MSR_HYPERCALL 0x40000001 | |
388 | ||
389 | union hv_x64_msr_hypercall_contents { | |
390 | u64 as_uint64; | |
391 | struct { | |
392 | u64 enable:1; | |
393 | u64 reserved:11; | |
394 | u64 guest_physical_address:52; | |
395 | }; | |
396 | }; | |
397 | ||
3645a917 S |
398 | |
399 | enum { | |
400 | VMBUS_MESSAGE_CONNECTION_ID = 1, | |
401 | VMBUS_MESSAGE_PORT_ID = 1, | |
402 | VMBUS_EVENT_CONNECTION_ID = 2, | |
403 | VMBUS_EVENT_PORT_ID = 2, | |
404 | VMBUS_MONITOR_CONNECTION_ID = 3, | |
405 | VMBUS_MONITOR_PORT_ID = 3, | |
406 | VMBUS_MESSAGE_SINT = 2, | |
407 | }; | |
408 | ||
409 | /* #defines */ | |
410 | ||
411 | #define HV_PRESENT_BIT 0x80000000 | |
412 | ||
413 | #define HV_LINUX_GUEST_ID_LO 0x00000000 | |
bd8a4f06 | 414 | #define HV_LINUX_GUEST_ID_HI 2976579765 |
3645a917 S |
415 | #define HV_LINUX_GUEST_ID (((u64)HV_LINUX_GUEST_ID_HI << 32) | \ |
416 | HV_LINUX_GUEST_ID_LO) | |
417 | ||
418 | #define HV_CPU_POWER_MANAGEMENT (1 << 0) | |
419 | #define HV_RECOMMENDATIONS_MAX 4 | |
420 | ||
421 | #define HV_X64_MAX 5 | |
422 | #define HV_CAPS_MAX 8 | |
423 | ||
424 | ||
425 | #define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) | |
426 | ||
427 | ||
428 | /* Service definitions */ | |
429 | ||
430 | #define HV_SERVICE_PARENT_PORT (0) | |
431 | #define HV_SERVICE_PARENT_CONNECTION (0) | |
432 | ||
433 | #define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0) | |
434 | #define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1) | |
435 | #define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2) | |
436 | #define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3) | |
437 | ||
438 | #define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1) | |
439 | #define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2) | |
440 | #define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3) | |
441 | #define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4) | |
442 | #define HV_SERVICE_MAX_MESSAGE_ID (4) | |
443 | ||
444 | #define HV_SERVICE_PROTOCOL_VERSION (0x0010) | |
445 | #define HV_CONNECT_PAYLOAD_BYTE_COUNT 64 | |
446 | ||
447 | /* #define VMBUS_REVISION_NUMBER 6 */ | |
448 | ||
449 | /* Our local vmbus's port and connection id. Anything >0 is fine */ | |
450 | /* #define VMBUS_PORT_ID 11 */ | |
451 | ||
452 | /* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */ | |
358d2ee2 S |
453 | static const uuid_le VMBUS_SERVICE_ID = { |
454 | .b = { | |
3645a917 S |
455 | 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, |
456 | 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4 | |
457 | }, | |
458 | }; | |
459 | ||
3645a917 S |
460 | |
461 | ||
462 | struct hv_input_signal_event_buffer { | |
463 | u64 align8; | |
464 | struct hv_input_signal_event event; | |
465 | }; | |
466 | ||
467 | struct hv_context { | |
468 | /* We only support running on top of Hyper-V | |
469 | * So at this point this really can only contain the Hyper-V ID | |
470 | */ | |
471 | u64 guestid; | |
472 | ||
473 | void *hypercall_page; | |
474 | ||
475 | bool synic_initialized; | |
476 | ||
477 | /* | |
478 | * This is used as an input param to HvCallSignalEvent hypercall. The | |
479 | * input param is immutable in our usage and must be dynamic mem (vs | |
480 | * stack or global). */ | |
481 | struct hv_input_signal_event_buffer *signal_event_buffer; | |
482 | /* 8-bytes aligned of the buffer above */ | |
483 | struct hv_input_signal_event *signal_event_param; | |
484 | ||
14c1bf8a S |
485 | void *synic_message_page[NR_CPUS]; |
486 | void *synic_event_page[NR_CPUS]; | |
3645a917 S |
487 | }; |
488 | ||
489 | extern struct hv_context hv_context; | |
490 | ||
491 | ||
492 | /* Hv Interface */ | |
493 | ||
494 | extern int hv_init(void); | |
495 | ||
496 | extern void hv_cleanup(void); | |
497 | ||
415f0a02 | 498 | extern int hv_post_message(union hv_connection_id connection_id, |
3645a917 S |
499 | enum hv_message_type message_type, |
500 | void *payload, size_t payload_size); | |
501 | ||
502 | extern u16 hv_signal_event(void); | |
503 | ||
504 | extern void hv_synic_init(void *irqarg); | |
505 | ||
506 | extern void hv_synic_cleanup(void *arg); | |
507 | ||
940655c1 S |
508 | |
509 | /* Interface */ | |
510 | ||
511 | ||
512 | int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void *buffer, | |
513 | u32 buflen); | |
514 | ||
515 | void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info); | |
516 | ||
517 | int hv_ringbuffer_write(struct hv_ring_buffer_info *ring_info, | |
518 | struct scatterlist *sglist, | |
519 | u32 sgcount); | |
520 | ||
521 | int hv_ringbuffer_peek(struct hv_ring_buffer_info *ring_info, void *buffer, | |
522 | u32 buflen); | |
523 | ||
524 | int hv_ringbuffer_read(struct hv_ring_buffer_info *ring_info, | |
525 | void *buffer, | |
526 | u32 buflen, | |
527 | u32 offset); | |
528 | ||
529 | u32 hv_get_ringbuffer_interrupt_mask(struct hv_ring_buffer_info *ring_info); | |
530 | ||
940655c1 S |
531 | void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info, |
532 | struct hv_ring_buffer_debug_info *debug_info); | |
533 | ||
89b2ca47 S |
534 | /* |
535 | * Maximum channels is determined by the size of the interrupt page | |
536 | * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt | |
537 | * and the other is receive endpoint interrupt | |
538 | */ | |
539 | #define MAX_NUM_CHANNELS ((PAGE_SIZE >> 1) << 3) /* 16348 channels */ | |
540 | ||
541 | /* The value here must be in multiple of 32 */ | |
542 | /* TODO: Need to make this configurable */ | |
543 | #define MAX_NUM_CHANNELS_SUPPORTED 256 | |
544 | ||
545 | ||
546 | enum vmbus_connect_state { | |
547 | DISCONNECTED, | |
548 | CONNECTING, | |
549 | CONNECTED, | |
550 | DISCONNECTING | |
551 | }; | |
552 | ||
553 | #define MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT | |
554 | ||
555 | struct vmbus_connection { | |
556 | enum vmbus_connect_state conn_state; | |
557 | ||
558 | atomic_t next_gpadl_handle; | |
559 | ||
560 | /* | |
561 | * Represents channel interrupts. Each bit position represents a | |
562 | * channel. When a channel sends an interrupt via VMBUS, it finds its | |
563 | * bit in the sendInterruptPage, set it and calls Hv to generate a port | |
564 | * event. The other end receives the port event and parse the | |
565 | * recvInterruptPage to see which bit is set | |
566 | */ | |
567 | void *int_page; | |
568 | void *send_int_page; | |
569 | void *recv_int_page; | |
570 | ||
571 | /* | |
572 | * 2 pages - 1st page for parent->child notification and 2nd | |
573 | * is child->parent notification | |
574 | */ | |
575 | void *monitor_pages; | |
576 | struct list_head chn_msg_list; | |
577 | spinlock_t channelmsg_lock; | |
578 | ||
579 | /* List of channels */ | |
580 | struct list_head chn_list; | |
581 | spinlock_t channel_lock; | |
582 | ||
583 | struct workqueue_struct *work_queue; | |
584 | }; | |
585 | ||
586 | ||
587 | struct vmbus_msginfo { | |
588 | /* Bookkeeping stuff */ | |
589 | struct list_head msglist_entry; | |
590 | ||
591 | /* The message itself */ | |
592 | unsigned char msg[0]; | |
593 | }; | |
594 | ||
595 | ||
596 | extern struct vmbus_connection vmbus_connection; | |
597 | ||
598 | /* General vmbus interface */ | |
599 | ||
f2c73011 | 600 | struct hv_device *vmbus_device_create(uuid_le *type, |
358d2ee2 | 601 | uuid_le *instance, |
89b2ca47 S |
602 | struct vmbus_channel *channel); |
603 | ||
22794281 | 604 | int vmbus_device_register(struct hv_device *child_device_obj); |
696453ba | 605 | void vmbus_device_unregister(struct hv_device *device_obj); |
89b2ca47 S |
606 | |
607 | /* static void */ | |
608 | /* VmbusChildDeviceDestroy( */ | |
609 | /* struct hv_device *); */ | |
610 | ||
611 | struct vmbus_channel *relid2channel(u32 relid); | |
612 | ||
93e5bd06 | 613 | void vmbus_free_channels(void); |
89b2ca47 S |
614 | |
615 | /* Connection interface */ | |
616 | ||
617 | int vmbus_connect(void); | |
618 | ||
89b2ca47 S |
619 | int vmbus_post_msg(void *buffer, size_t buflen); |
620 | ||
621 | int vmbus_set_event(u32 child_relid); | |
622 | ||
623 | void vmbus_on_event(unsigned long data); | |
624 | ||
625 | ||
0f2a6619 | 626 | #endif /* _HYPERV_VMBUS_H */ |