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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 | |
28 | #include <linux/list.h> |
29 | #include <asm/sync_bitops.h> |
30 | #include <linux/atomic.h> |
31 | #include <linux/hyperv.h> |
32 | |
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 port identifier type. */ |
105 | union hv_port_id { |
106 | u32 asu32; |
107 | struct { |
108 | u32 id:24; |
109 | u32 reserved:8; |
110 | } u ; |
111 | }; |
112 | |
113 | /* Define port type. */ |
114 | enum hv_port_type { |
115 | HVPORT_MSG = 1, |
116 | HVPORT_EVENT = 2, |
117 | HVPORT_MONITOR = 3 |
118 | }; |
119 | |
120 | /* Define port information structure. */ |
121 | struct hv_port_info { |
122 | enum hv_port_type port_type; |
123 | u32 padding; |
124 | union { |
125 | struct { |
126 | u32 target_sint; |
127 | u32 target_vp; |
128 | u64 rsvdz; |
129 | } message_port_info; |
130 | struct { |
131 | u32 target_sint; |
132 | u32 target_vp; |
133 | u16 base_flag_bumber; |
134 | u16 flag_count; |
135 | u32 rsvdz; |
136 | } event_port_info; |
137 | struct { |
138 | u64 monitor_address; |
139 | u64 rsvdz; |
140 | } monitor_port_info; |
141 | }; |
142 | }; |
143 | |
144 | struct hv_connection_info { |
145 | enum hv_port_type port_type; |
146 | u32 padding; |
147 | union { |
148 | struct { |
149 | u64 rsvdz; |
150 | } message_connection_info; |
151 | struct { |
152 | u64 rsvdz; |
153 | } event_connection_info; |
154 | struct { |
155 | u64 monitor_address; |
156 | } monitor_connection_info; |
157 | }; |
158 | }; |
159 | |
160 | /* Define synthetic interrupt controller message flags. */ |
161 | union hv_message_flags { |
162 | u8 asu8; |
163 | struct { |
164 | u8 msg_pending:1; |
165 | u8 reserved:7; |
166 | }; |
167 | }; |
168 | |
169 | /* Define synthetic interrupt controller message header. */ |
170 | struct hv_message_header { |
171 | enum hv_message_type message_type; |
172 | u8 payload_size; |
173 | union hv_message_flags message_flags; |
174 | u8 reserved[2]; |
175 | union { |
176 | u64 sender; |
177 | union hv_port_id port; |
178 | }; |
179 | }; |
180 | |
181 | /* Define timer message payload structure. */ |
182 | struct hv_timer_message_payload { |
183 | u32 timer_index; |
184 | u32 reserved; |
185 | u64 expiration_time; /* When the timer expired */ |
186 | u64 delivery_time; /* When the message was delivered */ |
187 | }; |
188 | |
189 | /* Define synthetic interrupt controller message format. */ |
190 | struct hv_message { |
191 | struct hv_message_header header; |
192 | union { |
193 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; |
194 | } u ; |
195 | }; |
196 | |
197 | /* Define the number of message buffers associated with each port. */ |
198 | #define HV_PORT_MESSAGE_BUFFER_COUNT (16) |
199 | |
200 | /* Define the synthetic interrupt message page layout. */ |
201 | struct hv_message_page { |
202 | struct hv_message sint_message[HV_SYNIC_SINT_COUNT]; |
203 | }; |
204 | |
205 | /* Define the synthetic interrupt controller event flags format. */ |
206 | union hv_synic_event_flags { |
207 | u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT]; |
208 | u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT]; |
209 | }; |
210 | |
211 | /* Define the synthetic interrupt flags page layout. */ |
212 | struct hv_synic_event_flags_page { |
213 | union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT]; |
214 | }; |
215 | |
216 | /* Define SynIC control register. */ |
217 | union hv_synic_scontrol { |
218 | u64 as_uint64; |
219 | struct { |
220 | u64 enable:1; |
221 | u64 reserved:63; |
222 | }; |
223 | }; |
224 | |
225 | /* Define synthetic interrupt source. */ |
226 | union hv_synic_sint { |
227 | u64 as_uint64; |
228 | struct { |
229 | u64 vector:8; |
230 | u64 reserved1:8; |
231 | u64 masked:1; |
232 | u64 auto_eoi:1; |
233 | u64 reserved2:46; |
234 | }; |
235 | }; |
236 | |
237 | /* Define the format of the SIMP register */ |
238 | union hv_synic_simp { |
239 | u64 as_uint64; |
240 | struct { |
241 | u64 simp_enabled:1; |
242 | u64 preserved:11; |
243 | u64 base_simp_gpa:52; |
244 | }; |
245 | }; |
246 | |
247 | /* Define the format of the SIEFP register */ |
248 | union hv_synic_siefp { |
249 | u64 as_uint64; |
250 | struct { |
251 | u64 siefp_enabled:1; |
252 | u64 preserved:11; |
253 | u64 base_siefp_gpa:52; |
254 | }; |
255 | }; |
256 | |
257 | /* Definitions for the monitored notification facility */ |
258 | union hv_monitor_trigger_group { |
259 | u64 as_uint64; |
260 | struct { |
261 | u32 pending; |
262 | u32 armed; |
263 | }; |
264 | }; |
265 | |
266 | struct hv_monitor_parameter { |
267 | union hv_connection_id connectionid; |
268 | u16 flagnumber; |
269 | u16 rsvdz; |
270 | }; |
271 | |
272 | union hv_monitor_trigger_state { |
273 | u32 asu32; |
274 | |
275 | struct { |
276 | u32 group_enable:4; |
277 | u32 rsvdz:28; |
278 | }; |
279 | }; |
280 | |
281 | /* struct hv_monitor_page Layout */ |
282 | /* ------------------------------------------------------ */ |
283 | /* | 0 | TriggerState (4 bytes) | Rsvd1 (4 bytes) | */ |
284 | /* | 8 | TriggerGroup[0] | */ |
285 | /* | 10 | TriggerGroup[1] | */ |
286 | /* | 18 | TriggerGroup[2] | */ |
287 | /* | 20 | TriggerGroup[3] | */ |
288 | /* | 28 | Rsvd2[0] | */ |
289 | /* | 30 | Rsvd2[1] | */ |
290 | /* | 38 | Rsvd2[2] | */ |
291 | /* | 40 | NextCheckTime[0][0] | NextCheckTime[0][1] | */ |
292 | /* | ... | */ |
293 | /* | 240 | Latency[0][0..3] | */ |
294 | /* | 340 | Rsvz3[0] | */ |
295 | /* | 440 | Parameter[0][0] | */ |
296 | /* | 448 | Parameter[0][1] | */ |
297 | /* | ... | */ |
298 | /* | 840 | Rsvd4[0] | */ |
299 | /* ------------------------------------------------------ */ |
300 | struct hv_monitor_page { |
301 | union hv_monitor_trigger_state trigger_state; |
302 | u32 rsvdz1; |
303 | |
304 | union hv_monitor_trigger_group trigger_group[4]; |
305 | u64 rsvdz2[3]; |
306 | |
307 | s32 next_checktime[4][32]; |
308 | |
309 | u16 latency[4][32]; |
310 | u64 rsvdz3[32]; |
311 | |
312 | struct hv_monitor_parameter parameter[4][32]; |
313 | |
314 | u8 rsvdz4[1984]; |
315 | }; |
316 | |
317 | /* Declare the various hypercall operations. */ |
318 | enum hv_call_code { |
319 | HVCALL_POST_MESSAGE = 0x005c, |
320 | HVCALL_SIGNAL_EVENT = 0x005d, |
321 | }; |
322 | |
323 | /* Definition of the hv_post_message hypercall input structure. */ |
324 | struct hv_input_post_message { |
325 | union hv_connection_id connectionid; |
326 | u32 reserved; |
327 | enum hv_message_type message_type; |
328 | u32 payload_size; |
329 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; |
330 | }; |
331 | |
332 | /* |
333 | * Versioning definitions used for guests reporting themselves to the |
334 | * hypervisor, and visa versa. |
335 | */ |
336 | |
337 | /* Version info reported by guest OS's */ |
338 | enum hv_guest_os_vendor { |
339 | HVGUESTOS_VENDOR_MICROSOFT = 0x0001 |
340 | }; |
341 | |
342 | enum hv_guest_os_microsoft_ids { |
343 | HVGUESTOS_MICROSOFT_UNDEFINED = 0x00, |
344 | HVGUESTOS_MICROSOFT_MSDOS = 0x01, |
345 | HVGUESTOS_MICROSOFT_WINDOWS3X = 0x02, |
346 | HVGUESTOS_MICROSOFT_WINDOWS9X = 0x03, |
347 | HVGUESTOS_MICROSOFT_WINDOWSNT = 0x04, |
348 | HVGUESTOS_MICROSOFT_WINDOWSCE = 0x05 |
349 | }; |
350 | |
351 | /* |
352 | * Declare the MSR used to identify the guest OS. |
353 | */ |
354 | #define HV_X64_MSR_GUEST_OS_ID 0x40000000 |
355 | |
356 | union hv_x64_msr_guest_os_id_contents { |
357 | u64 as_uint64; |
358 | struct { |
359 | u64 build_number:16; |
360 | u64 service_version:8; /* Service Pack, etc. */ |
361 | u64 minor_version:8; |
362 | u64 major_version:8; |
363 | u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */ |
364 | u64 vendor_id:16; /* enum hv_guest_os_vendor */ |
365 | }; |
366 | }; |
367 | |
368 | /* |
369 | * Declare the MSR used to setup pages used to communicate with the hypervisor. |
370 | */ |
371 | #define HV_X64_MSR_HYPERCALL 0x40000001 |
372 | |
373 | union hv_x64_msr_hypercall_contents { |
374 | u64 as_uint64; |
375 | struct { |
376 | u64 enable:1; |
377 | u64 reserved:11; |
378 | u64 guest_physical_address:52; |
379 | }; |
380 | }; |
381 | |
382 | |
383 | enum { |
384 | VMBUS_MESSAGE_CONNECTION_ID = 1, |
385 | VMBUS_MESSAGE_PORT_ID = 1, |
386 | VMBUS_EVENT_CONNECTION_ID = 2, |
387 | VMBUS_EVENT_PORT_ID = 2, |
388 | VMBUS_MONITOR_CONNECTION_ID = 3, |
389 | VMBUS_MONITOR_PORT_ID = 3, |
390 | VMBUS_MESSAGE_SINT = 2, |
391 | }; |
392 | |
393 | /* #defines */ |
394 | |
395 | #define HV_PRESENT_BIT 0x80000000 |
396 | |
397 | /* |
398 | * The guest OS needs to register the guest ID with the hypervisor. |
399 | * The guest ID is a 64 bit entity and the structure of this ID is |
400 | * specified in the Hyper-V specification: |
401 | * |
402 | * http://msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx |
403 | * |
404 | * While the current guideline does not specify how Linux guest ID(s) |
405 | * need to be generated, our plan is to publish the guidelines for |
406 | * Linux and other guest operating systems that currently are hosted |
407 | * on Hyper-V. The implementation here conforms to this yet |
408 | * unpublished guidelines. |
409 | * |
410 | * |
411 | * Bit(s) |
412 | * 63 - Indicates if the OS is Open Source or not; 1 is Open Source |
413 | * 62:56 - Os Type; Linux is 0x100 |
414 | * 55:48 - Distro specific identification |
415 | * 47:16 - Linux kernel version number |
416 | * 15:0 - Distro specific identification |
417 | * |
418 | * |
419 | */ |
420 | |
421 | #define HV_LINUX_VENDOR_ID 0x8100 |
422 | |
423 | /* |
424 | * Generate the guest ID based on the guideline described above. |
425 | */ |
426 | |
427 | static inline __u64 generate_guest_id(__u8 d_info1, __u32 kernel_version, |
428 | __u16 d_info2) |
429 | { |
430 | __u64 guest_id = 0; |
431 | |
432 | guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48); |
433 | guest_id |= (((__u64)(d_info1)) << 48); |
434 | guest_id |= (((__u64)(kernel_version)) << 16); |
435 | guest_id |= ((__u64)(d_info2)); |
436 | |
437 | return guest_id; |
438 | } |
439 | |
440 | |
441 | #define HV_CPU_POWER_MANAGEMENT (1 << 0) |
442 | #define HV_RECOMMENDATIONS_MAX 4 |
443 | |
444 | #define HV_X64_MAX 5 |
445 | #define HV_CAPS_MAX 8 |
446 | |
447 | |
448 | #define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) |
449 | |
450 | |
451 | /* Service definitions */ |
452 | |
453 | #define HV_SERVICE_PARENT_PORT (0) |
454 | #define HV_SERVICE_PARENT_CONNECTION (0) |
455 | |
456 | #define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0) |
457 | #define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1) |
458 | #define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2) |
459 | #define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3) |
460 | |
461 | #define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1) |
462 | #define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2) |
463 | #define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3) |
464 | #define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4) |
465 | #define HV_SERVICE_MAX_MESSAGE_ID (4) |
466 | |
467 | #define HV_SERVICE_PROTOCOL_VERSION (0x0010) |
468 | #define HV_CONNECT_PAYLOAD_BYTE_COUNT 64 |
469 | |
470 | /* #define VMBUS_REVISION_NUMBER 6 */ |
471 | |
472 | /* Our local vmbus's port and connection id. Anything >0 is fine */ |
473 | /* #define VMBUS_PORT_ID 11 */ |
474 | |
475 | /* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */ |
476 | static const uuid_le VMBUS_SERVICE_ID = { |
477 | .b = { |
478 | 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, |
479 | 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4 |
480 | }, |
481 | }; |
482 | |
483 | |
484 | |
485 | struct hv_context { |
486 | /* We only support running on top of Hyper-V |
487 | * So at this point this really can only contain the Hyper-V ID |
488 | */ |
489 | u64 guestid; |
490 | |
491 | void *hypercall_page; |
492 | |
493 | bool synic_initialized; |
494 | |
495 | void *synic_message_page[NR_CPUS]; |
496 | void *synic_event_page[NR_CPUS]; |
497 | /* |
498 | * Hypervisor's notion of virtual processor ID is different from |
499 | * Linux' notion of CPU ID. This information can only be retrieved |
500 | * in the context of the calling CPU. Setup a map for easy access |
501 | * to this information: |
502 | * |
503 | * vp_index[a] is the Hyper-V's processor ID corresponding to |
504 | * Linux cpuid 'a'. |
505 | */ |
506 | u32 vp_index[NR_CPUS]; |
507 | /* |
508 | * Starting with win8, we can take channel interrupts on any CPU; |
509 | * we will manage the tasklet that handles events on a per CPU |
510 | * basis. |
511 | */ |
512 | struct tasklet_struct *event_dpc[NR_CPUS]; |
513 | }; |
514 | |
515 | extern struct hv_context hv_context; |
516 | |
517 | |
518 | /* Hv Interface */ |
519 | |
520 | extern int hv_init(void); |
521 | |
522 | extern void hv_cleanup(void); |
523 | |
524 | extern int hv_post_message(union hv_connection_id connection_id, |
525 | enum hv_message_type message_type, |
526 | void *payload, size_t payload_size); |
527 | |
528 | extern u16 hv_signal_event(void *con_id); |
529 | |
530 | extern void hv_synic_init(void *irqarg); |
531 | |
532 | extern void hv_synic_cleanup(void *arg); |
533 | |
534 | /* |
535 | * Host version information. |
536 | */ |
537 | extern unsigned int host_info_eax; |
538 | extern unsigned int host_info_ebx; |
539 | extern unsigned int host_info_ecx; |
540 | extern unsigned int host_info_edx; |
541 | |
542 | /* Interface */ |
543 | |
544 | |
545 | int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void *buffer, |
546 | u32 buflen); |
547 | |
548 | void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info); |
549 | |
550 | int hv_ringbuffer_write(struct hv_ring_buffer_info *ring_info, |
551 | struct scatterlist *sglist, |
552 | u32 sgcount, bool *signal); |
553 | |
554 | int hv_ringbuffer_peek(struct hv_ring_buffer_info *ring_info, void *buffer, |
555 | u32 buflen); |
556 | |
557 | int hv_ringbuffer_read(struct hv_ring_buffer_info *ring_info, |
558 | void *buffer, |
559 | u32 buflen, |
560 | u32 offset, bool *signal); |
561 | |
562 | |
563 | void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info, |
564 | struct hv_ring_buffer_debug_info *debug_info); |
565 | |
566 | void hv_begin_read(struct hv_ring_buffer_info *rbi); |
567 | |
568 | u32 hv_end_read(struct hv_ring_buffer_info *rbi); |
569 | |
570 | /* |
571 | * Maximum channels is determined by the size of the interrupt page |
572 | * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt |
573 | * and the other is receive endpoint interrupt |
574 | */ |
575 | #define MAX_NUM_CHANNELS ((PAGE_SIZE >> 1) << 3) /* 16348 channels */ |
576 | |
577 | /* The value here must be in multiple of 32 */ |
578 | /* TODO: Need to make this configurable */ |
579 | #define MAX_NUM_CHANNELS_SUPPORTED 256 |
580 | |
581 | |
582 | enum vmbus_connect_state { |
583 | DISCONNECTED, |
584 | CONNECTING, |
585 | CONNECTED, |
586 | DISCONNECTING |
587 | }; |
588 | |
589 | #define MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT |
590 | |
591 | struct vmbus_connection { |
592 | enum vmbus_connect_state conn_state; |
593 | |
594 | atomic_t next_gpadl_handle; |
595 | |
596 | /* |
597 | * Represents channel interrupts. Each bit position represents a |
598 | * channel. When a channel sends an interrupt via VMBUS, it finds its |
599 | * bit in the sendInterruptPage, set it and calls Hv to generate a port |
600 | * event. The other end receives the port event and parse the |
601 | * recvInterruptPage to see which bit is set |
602 | */ |
603 | void *int_page; |
604 | void *send_int_page; |
605 | void *recv_int_page; |
606 | |
607 | /* |
608 | * 2 pages - 1st page for parent->child notification and 2nd |
609 | * is child->parent notification |
610 | */ |
611 | void *monitor_pages; |
612 | struct list_head chn_msg_list; |
613 | spinlock_t channelmsg_lock; |
614 | |
615 | /* List of channels */ |
616 | struct list_head chn_list; |
617 | spinlock_t channel_lock; |
618 | |
619 | struct workqueue_struct *work_queue; |
620 | }; |
621 | |
622 | |
623 | struct vmbus_msginfo { |
624 | /* Bookkeeping stuff */ |
625 | struct list_head msglist_entry; |
626 | |
627 | /* The message itself */ |
628 | unsigned char msg[0]; |
629 | }; |
630 | |
631 | |
632 | extern struct vmbus_connection vmbus_connection; |
633 | |
634 | /* General vmbus interface */ |
635 | |
636 | struct hv_device *vmbus_device_create(uuid_le *type, |
637 | uuid_le *instance, |
638 | struct vmbus_channel *channel); |
639 | |
640 | int vmbus_device_register(struct hv_device *child_device_obj); |
641 | void vmbus_device_unregister(struct hv_device *device_obj); |
642 | |
643 | /* static void */ |
644 | /* VmbusChildDeviceDestroy( */ |
645 | /* struct hv_device *); */ |
646 | |
647 | struct vmbus_channel *relid2channel(u32 relid); |
648 | |
649 | void vmbus_free_channels(void); |
650 | |
651 | /* Connection interface */ |
652 | |
653 | int vmbus_connect(void); |
654 | |
655 | int vmbus_post_msg(void *buffer, size_t buflen); |
656 | |
657 | int vmbus_set_event(struct vmbus_channel *channel); |
658 | |
659 | void vmbus_on_event(unsigned long data); |
660 | |
661 | |
662 | #endif /* _HYPERV_VMBUS_H */ |
663 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9