Commit | Line | Data |
---|---|---|
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 | ||
96c1d058 NM |
52 | #define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE 0x400 |
53 | ||
54 | #define HV_X64_MSR_CRASH_P0 0x40000100 | |
55 | #define HV_X64_MSR_CRASH_P1 0x40000101 | |
56 | #define HV_X64_MSR_CRASH_P2 0x40000102 | |
57 | #define HV_X64_MSR_CRASH_P3 0x40000103 | |
58 | #define HV_X64_MSR_CRASH_P4 0x40000104 | |
59 | #define HV_X64_MSR_CRASH_CTL 0x40000105 | |
60 | ||
5ef5b692 | 61 | #define HV_CRASH_CTL_CRASH_NOTIFY (1ULL << 63) |
96c1d058 | 62 | |
afbdc4a9 S |
63 | /* Define version of the synthetic interrupt controller. */ |
64 | #define HV_SYNIC_VERSION (1) | |
65 | ||
afbdc4a9 S |
66 | /* Define synthetic interrupt controller message constants. */ |
67 | #define HV_MESSAGE_SIZE (256) | |
68 | #define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240) | |
69 | #define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30) | |
70 | #define HV_ANY_VP (0xFFFFFFFF) | |
71 | ||
72 | /* Define synthetic interrupt controller flag constants. */ | |
73 | #define HV_EVENT_FLAGS_COUNT (256 * 8) | |
74 | #define HV_EVENT_FLAGS_BYTE_COUNT (256) | |
75 | #define HV_EVENT_FLAGS_DWORD_COUNT (256 / sizeof(u32)) | |
76 | ||
77 | /* Define hypervisor message types. */ | |
78 | enum hv_message_type { | |
79 | HVMSG_NONE = 0x00000000, | |
80 | ||
81 | /* Memory access messages. */ | |
82 | HVMSG_UNMAPPED_GPA = 0x80000000, | |
83 | HVMSG_GPA_INTERCEPT = 0x80000001, | |
84 | ||
85 | /* Timer notification messages. */ | |
86 | HVMSG_TIMER_EXPIRED = 0x80000010, | |
87 | ||
88 | /* Error messages. */ | |
89 | HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020, | |
90 | HVMSG_UNRECOVERABLE_EXCEPTION = 0x80000021, | |
91 | HVMSG_UNSUPPORTED_FEATURE = 0x80000022, | |
92 | ||
93 | /* Trace buffer complete messages. */ | |
94 | HVMSG_EVENTLOG_BUFFERCOMPLETE = 0x80000040, | |
95 | ||
96 | /* Platform-specific processor intercept messages. */ | |
97 | HVMSG_X64_IOPORT_INTERCEPT = 0x80010000, | |
98 | HVMSG_X64_MSR_INTERCEPT = 0x80010001, | |
99 | HVMSG_X64_CPUID_INTERCEPT = 0x80010002, | |
100 | HVMSG_X64_EXCEPTION_INTERCEPT = 0x80010003, | |
101 | HVMSG_X64_APIC_EOI = 0x80010004, | |
102 | HVMSG_X64_LEGACY_FP_ERROR = 0x80010005 | |
103 | }; | |
104 | ||
afbdc4a9 S |
105 | #define HV_SYNIC_STIMER_COUNT (4) |
106 | ||
107 | /* Define invalid partition identifier. */ | |
108 | #define HV_PARTITION_ID_INVALID ((u64)0x0) | |
109 | ||
afbdc4a9 S |
110 | /* Define port identifier type. */ |
111 | union hv_port_id { | |
112 | u32 asu32; | |
113 | struct { | |
114 | u32 id:24; | |
115 | u32 reserved:8; | |
116 | } u ; | |
117 | }; | |
118 | ||
119 | /* Define port type. */ | |
120 | enum hv_port_type { | |
121 | HVPORT_MSG = 1, | |
122 | HVPORT_EVENT = 2, | |
123 | HVPORT_MONITOR = 3 | |
124 | }; | |
125 | ||
126 | /* Define port information structure. */ | |
127 | struct hv_port_info { | |
128 | enum hv_port_type port_type; | |
129 | u32 padding; | |
130 | union { | |
131 | struct { | |
132 | u32 target_sint; | |
133 | u32 target_vp; | |
134 | u64 rsvdz; | |
135 | } message_port_info; | |
136 | struct { | |
137 | u32 target_sint; | |
138 | u32 target_vp; | |
e26009aa | 139 | u16 base_flag_number; |
afbdc4a9 S |
140 | u16 flag_count; |
141 | u32 rsvdz; | |
142 | } event_port_info; | |
143 | struct { | |
144 | u64 monitor_address; | |
145 | u64 rsvdz; | |
146 | } monitor_port_info; | |
147 | }; | |
148 | }; | |
149 | ||
150 | struct hv_connection_info { | |
151 | enum hv_port_type port_type; | |
152 | u32 padding; | |
153 | union { | |
154 | struct { | |
155 | u64 rsvdz; | |
156 | } message_connection_info; | |
157 | struct { | |
158 | u64 rsvdz; | |
159 | } event_connection_info; | |
160 | struct { | |
161 | u64 monitor_address; | |
162 | } monitor_connection_info; | |
163 | }; | |
164 | }; | |
165 | ||
166 | /* Define synthetic interrupt controller message flags. */ | |
167 | union hv_message_flags { | |
168 | u8 asu8; | |
169 | struct { | |
170 | u8 msg_pending:1; | |
171 | u8 reserved:7; | |
172 | }; | |
173 | }; | |
174 | ||
175 | /* Define synthetic interrupt controller message header. */ | |
176 | struct hv_message_header { | |
177 | enum hv_message_type message_type; | |
178 | u8 payload_size; | |
179 | union hv_message_flags message_flags; | |
180 | u8 reserved[2]; | |
181 | union { | |
182 | u64 sender; | |
183 | union hv_port_id port; | |
184 | }; | |
185 | }; | |
186 | ||
4061ed9e S |
187 | /* |
188 | * Timer configuration register. | |
189 | */ | |
190 | union hv_timer_config { | |
191 | u64 as_uint64; | |
192 | struct { | |
193 | u64 enable:1; | |
194 | u64 periodic:1; | |
195 | u64 lazy:1; | |
196 | u64 auto_enable:1; | |
197 | u64 reserved_z0:12; | |
198 | u64 sintx:4; | |
199 | u64 reserved_z1:44; | |
200 | }; | |
201 | }; | |
202 | ||
203 | ||
afbdc4a9 S |
204 | /* Define timer message payload structure. */ |
205 | struct hv_timer_message_payload { | |
206 | u32 timer_index; | |
207 | u32 reserved; | |
208 | u64 expiration_time; /* When the timer expired */ | |
209 | u64 delivery_time; /* When the message was delivered */ | |
210 | }; | |
211 | ||
212 | /* Define synthetic interrupt controller message format. */ | |
213 | struct hv_message { | |
214 | struct hv_message_header header; | |
215 | union { | |
216 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; | |
217 | } u ; | |
218 | }; | |
219 | ||
220 | /* Define the number of message buffers associated with each port. */ | |
221 | #define HV_PORT_MESSAGE_BUFFER_COUNT (16) | |
222 | ||
223 | /* Define the synthetic interrupt message page layout. */ | |
224 | struct hv_message_page { | |
225 | struct hv_message sint_message[HV_SYNIC_SINT_COUNT]; | |
226 | }; | |
227 | ||
228 | /* Define the synthetic interrupt controller event flags format. */ | |
229 | union hv_synic_event_flags { | |
230 | u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT]; | |
231 | u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT]; | |
232 | }; | |
233 | ||
234 | /* Define the synthetic interrupt flags page layout. */ | |
235 | struct hv_synic_event_flags_page { | |
236 | union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT]; | |
237 | }; | |
238 | ||
239 | /* Define SynIC control register. */ | |
240 | union hv_synic_scontrol { | |
241 | u64 as_uint64; | |
242 | struct { | |
243 | u64 enable:1; | |
244 | u64 reserved:63; | |
245 | }; | |
246 | }; | |
247 | ||
248 | /* Define synthetic interrupt source. */ | |
249 | union hv_synic_sint { | |
250 | u64 as_uint64; | |
251 | struct { | |
252 | u64 vector:8; | |
253 | u64 reserved1:8; | |
254 | u64 masked:1; | |
255 | u64 auto_eoi:1; | |
256 | u64 reserved2:46; | |
257 | }; | |
258 | }; | |
259 | ||
260 | /* Define the format of the SIMP register */ | |
261 | union hv_synic_simp { | |
262 | u64 as_uint64; | |
263 | struct { | |
264 | u64 simp_enabled:1; | |
265 | u64 preserved:11; | |
266 | u64 base_simp_gpa:52; | |
267 | }; | |
268 | }; | |
269 | ||
270 | /* Define the format of the SIEFP register */ | |
271 | union hv_synic_siefp { | |
272 | u64 as_uint64; | |
273 | struct { | |
274 | u64 siefp_enabled:1; | |
275 | u64 preserved:11; | |
276 | u64 base_siefp_gpa:52; | |
277 | }; | |
278 | }; | |
279 | ||
280 | /* Definitions for the monitored notification facility */ | |
281 | union hv_monitor_trigger_group { | |
282 | u64 as_uint64; | |
283 | struct { | |
284 | u32 pending; | |
285 | u32 armed; | |
286 | }; | |
287 | }; | |
288 | ||
289 | struct hv_monitor_parameter { | |
290 | union hv_connection_id connectionid; | |
291 | u16 flagnumber; | |
292 | u16 rsvdz; | |
293 | }; | |
294 | ||
295 | union hv_monitor_trigger_state { | |
296 | u32 asu32; | |
297 | ||
298 | struct { | |
299 | u32 group_enable:4; | |
300 | u32 rsvdz:28; | |
301 | }; | |
302 | }; | |
303 | ||
304 | /* struct hv_monitor_page Layout */ | |
305 | /* ------------------------------------------------------ */ | |
306 | /* | 0 | TriggerState (4 bytes) | Rsvd1 (4 bytes) | */ | |
307 | /* | 8 | TriggerGroup[0] | */ | |
308 | /* | 10 | TriggerGroup[1] | */ | |
309 | /* | 18 | TriggerGroup[2] | */ | |
310 | /* | 20 | TriggerGroup[3] | */ | |
311 | /* | 28 | Rsvd2[0] | */ | |
312 | /* | 30 | Rsvd2[1] | */ | |
313 | /* | 38 | Rsvd2[2] | */ | |
314 | /* | 40 | NextCheckTime[0][0] | NextCheckTime[0][1] | */ | |
315 | /* | ... | */ | |
316 | /* | 240 | Latency[0][0..3] | */ | |
317 | /* | 340 | Rsvz3[0] | */ | |
318 | /* | 440 | Parameter[0][0] | */ | |
319 | /* | 448 | Parameter[0][1] | */ | |
320 | /* | ... | */ | |
321 | /* | 840 | Rsvd4[0] | */ | |
322 | /* ------------------------------------------------------ */ | |
323 | struct hv_monitor_page { | |
324 | union hv_monitor_trigger_state trigger_state; | |
325 | u32 rsvdz1; | |
326 | ||
327 | union hv_monitor_trigger_group trigger_group[4]; | |
328 | u64 rsvdz2[3]; | |
329 | ||
330 | s32 next_checktime[4][32]; | |
331 | ||
332 | u16 latency[4][32]; | |
333 | u64 rsvdz3[32]; | |
334 | ||
335 | struct hv_monitor_parameter parameter[4][32]; | |
336 | ||
337 | u8 rsvdz4[1984]; | |
338 | }; | |
339 | ||
340 | /* Declare the various hypercall operations. */ | |
341 | enum hv_call_code { | |
342 | HVCALL_POST_MESSAGE = 0x005c, | |
343 | HVCALL_SIGNAL_EVENT = 0x005d, | |
344 | }; | |
345 | ||
346 | /* Definition of the hv_post_message hypercall input structure. */ | |
347 | struct hv_input_post_message { | |
348 | union hv_connection_id connectionid; | |
349 | u32 reserved; | |
350 | enum hv_message_type message_type; | |
351 | u32 payload_size; | |
352 | u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; | |
353 | }; | |
354 | ||
afbdc4a9 S |
355 | /* |
356 | * Versioning definitions used for guests reporting themselves to the | |
357 | * hypervisor, and visa versa. | |
358 | */ | |
359 | ||
360 | /* Version info reported by guest OS's */ | |
361 | enum hv_guest_os_vendor { | |
362 | HVGUESTOS_VENDOR_MICROSOFT = 0x0001 | |
363 | }; | |
364 | ||
365 | enum hv_guest_os_microsoft_ids { | |
366 | HVGUESTOS_MICROSOFT_UNDEFINED = 0x00, | |
367 | HVGUESTOS_MICROSOFT_MSDOS = 0x01, | |
368 | HVGUESTOS_MICROSOFT_WINDOWS3X = 0x02, | |
369 | HVGUESTOS_MICROSOFT_WINDOWS9X = 0x03, | |
370 | HVGUESTOS_MICROSOFT_WINDOWSNT = 0x04, | |
371 | HVGUESTOS_MICROSOFT_WINDOWSCE = 0x05 | |
372 | }; | |
373 | ||
374 | /* | |
375 | * Declare the MSR used to identify the guest OS. | |
376 | */ | |
377 | #define HV_X64_MSR_GUEST_OS_ID 0x40000000 | |
378 | ||
379 | union hv_x64_msr_guest_os_id_contents { | |
380 | u64 as_uint64; | |
381 | struct { | |
382 | u64 build_number:16; | |
383 | u64 service_version:8; /* Service Pack, etc. */ | |
384 | u64 minor_version:8; | |
385 | u64 major_version:8; | |
386 | u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */ | |
387 | u64 vendor_id:16; /* enum hv_guest_os_vendor */ | |
388 | }; | |
389 | }; | |
390 | ||
391 | /* | |
392 | * Declare the MSR used to setup pages used to communicate with the hypervisor. | |
393 | */ | |
394 | #define HV_X64_MSR_HYPERCALL 0x40000001 | |
395 | ||
396 | union hv_x64_msr_hypercall_contents { | |
397 | u64 as_uint64; | |
398 | struct { | |
399 | u64 enable:1; | |
400 | u64 reserved:11; | |
401 | u64 guest_physical_address:52; | |
402 | }; | |
403 | }; | |
404 | ||
3645a917 S |
405 | |
406 | enum { | |
407 | VMBUS_MESSAGE_CONNECTION_ID = 1, | |
408 | VMBUS_MESSAGE_PORT_ID = 1, | |
409 | VMBUS_EVENT_CONNECTION_ID = 2, | |
410 | VMBUS_EVENT_PORT_ID = 2, | |
411 | VMBUS_MONITOR_CONNECTION_ID = 3, | |
412 | VMBUS_MONITOR_PORT_ID = 3, | |
413 | VMBUS_MESSAGE_SINT = 2, | |
414 | }; | |
415 | ||
416 | /* #defines */ | |
417 | ||
418 | #define HV_PRESENT_BIT 0x80000000 | |
419 | ||
83ba0c4f S |
420 | /* |
421 | * The guest OS needs to register the guest ID with the hypervisor. | |
422 | * The guest ID is a 64 bit entity and the structure of this ID is | |
423 | * specified in the Hyper-V specification: | |
424 | * | |
425 | * http://msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx | |
426 | * | |
427 | * While the current guideline does not specify how Linux guest ID(s) | |
428 | * need to be generated, our plan is to publish the guidelines for | |
429 | * Linux and other guest operating systems that currently are hosted | |
430 | * on Hyper-V. The implementation here conforms to this yet | |
431 | * unpublished guidelines. | |
432 | * | |
433 | * | |
434 | * Bit(s) | |
435 | * 63 - Indicates if the OS is Open Source or not; 1 is Open Source | |
436 | * 62:56 - Os Type; Linux is 0x100 | |
437 | * 55:48 - Distro specific identification | |
438 | * 47:16 - Linux kernel version number | |
439 | * 15:0 - Distro specific identification | |
440 | * | |
441 | * | |
442 | */ | |
443 | ||
444 | #define HV_LINUX_VENDOR_ID 0x8100 | |
445 | ||
446 | /* | |
447 | * Generate the guest ID based on the guideline described above. | |
448 | */ | |
449 | ||
450 | static inline __u64 generate_guest_id(__u8 d_info1, __u32 kernel_version, | |
451 | __u16 d_info2) | |
452 | { | |
453 | __u64 guest_id = 0; | |
454 | ||
455 | guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48); | |
456 | guest_id |= (((__u64)(d_info1)) << 48); | |
457 | guest_id |= (((__u64)(kernel_version)) << 16); | |
458 | guest_id |= ((__u64)(d_info2)); | |
459 | ||
460 | return guest_id; | |
461 | } | |
462 | ||
3645a917 S |
463 | |
464 | #define HV_CPU_POWER_MANAGEMENT (1 << 0) | |
465 | #define HV_RECOMMENDATIONS_MAX 4 | |
466 | ||
467 | #define HV_X64_MAX 5 | |
468 | #define HV_CAPS_MAX 8 | |
469 | ||
470 | ||
471 | #define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) | |
472 | ||
473 | ||
474 | /* Service definitions */ | |
475 | ||
476 | #define HV_SERVICE_PARENT_PORT (0) | |
477 | #define HV_SERVICE_PARENT_CONNECTION (0) | |
478 | ||
479 | #define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0) | |
480 | #define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1) | |
481 | #define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2) | |
482 | #define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3) | |
483 | ||
484 | #define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1) | |
485 | #define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2) | |
486 | #define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3) | |
487 | #define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4) | |
488 | #define HV_SERVICE_MAX_MESSAGE_ID (4) | |
489 | ||
490 | #define HV_SERVICE_PROTOCOL_VERSION (0x0010) | |
491 | #define HV_CONNECT_PAYLOAD_BYTE_COUNT 64 | |
492 | ||
493 | /* #define VMBUS_REVISION_NUMBER 6 */ | |
494 | ||
495 | /* Our local vmbus's port and connection id. Anything >0 is fine */ | |
496 | /* #define VMBUS_PORT_ID 11 */ | |
497 | ||
498 | /* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */ | |
358d2ee2 S |
499 | static const uuid_le VMBUS_SERVICE_ID = { |
500 | .b = { | |
3645a917 S |
501 | 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, |
502 | 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4 | |
503 | }, | |
504 | }; | |
505 | ||
3645a917 S |
506 | |
507 | ||
3645a917 S |
508 | struct hv_context { |
509 | /* We only support running on top of Hyper-V | |
510 | * So at this point this really can only contain the Hyper-V ID | |
511 | */ | |
512 | u64 guestid; | |
513 | ||
514 | void *hypercall_page; | |
ca9357bd | 515 | void *tsc_page; |
3645a917 S |
516 | |
517 | bool synic_initialized; | |
518 | ||
14c1bf8a S |
519 | void *synic_message_page[NR_CPUS]; |
520 | void *synic_event_page[NR_CPUS]; | |
917ea427 S |
521 | /* |
522 | * Hypervisor's notion of virtual processor ID is different from | |
523 | * Linux' notion of CPU ID. This information can only be retrieved | |
524 | * in the context of the calling CPU. Setup a map for easy access | |
525 | * to this information: | |
526 | * | |
527 | * vp_index[a] is the Hyper-V's processor ID corresponding to | |
528 | * Linux cpuid 'a'. | |
529 | */ | |
530 | u32 vp_index[NR_CPUS]; | |
db11f12a S |
531 | /* |
532 | * Starting with win8, we can take channel interrupts on any CPU; | |
533 | * we will manage the tasklet that handles events on a per CPU | |
534 | * basis. | |
535 | */ | |
536 | struct tasklet_struct *event_dpc[NR_CPUS]; | |
3a28fa35 S |
537 | /* |
538 | * To optimize the mapping of relid to channel, maintain | |
539 | * per-cpu list of the channels based on their CPU affinity. | |
540 | */ | |
541 | struct list_head percpu_list[NR_CPUS]; | |
b29ef354 S |
542 | /* |
543 | * buffer to post messages to the host. | |
544 | */ | |
545 | void *post_msg_page[NR_CPUS]; | |
4061ed9e S |
546 | /* |
547 | * Support PV clockevent device. | |
548 | */ | |
549 | struct clock_event_device *clk_evt[NR_CPUS]; | |
9f01ec53 S |
550 | /* |
551 | * To manage allocations in a NUMA node. | |
552 | * Array indexed by numa node ID. | |
553 | */ | |
554 | struct cpumask *hv_numa_map; | |
3645a917 S |
555 | }; |
556 | ||
557 | extern struct hv_context hv_context; | |
558 | ||
ca9357bd S |
559 | struct ms_hyperv_tsc_page { |
560 | volatile u32 tsc_sequence; | |
561 | u32 reserved1; | |
562 | volatile u64 tsc_scale; | |
563 | volatile s64 tsc_offset; | |
564 | u64 reserved2[509]; | |
565 | }; | |
566 | ||
1fdde16d GKH |
567 | struct hv_ring_buffer_debug_info { |
568 | u32 current_interrupt_mask; | |
569 | u32 current_read_index; | |
570 | u32 current_write_index; | |
571 | u32 bytes_avail_toread; | |
572 | u32 bytes_avail_towrite; | |
573 | }; | |
3645a917 S |
574 | |
575 | /* Hv Interface */ | |
576 | ||
577 | extern int hv_init(void); | |
578 | ||
579 | extern void hv_cleanup(void); | |
580 | ||
415f0a02 | 581 | extern int hv_post_message(union hv_connection_id connection_id, |
3645a917 S |
582 | enum hv_message_type message_type, |
583 | void *payload, size_t payload_size); | |
584 | ||
1f42248d | 585 | extern u16 hv_signal_event(void *con_id); |
3645a917 | 586 | |
2608fb65 JW |
587 | extern int hv_synic_alloc(void); |
588 | ||
589 | extern void hv_synic_free(void); | |
590 | ||
3645a917 S |
591 | extern void hv_synic_init(void *irqarg); |
592 | ||
593 | extern void hv_synic_cleanup(void *arg); | |
594 | ||
e086748c VK |
595 | extern void hv_synic_clockevents_cleanup(void); |
596 | ||
5fbebb2d S |
597 | /* |
598 | * Host version information. | |
599 | */ | |
600 | extern unsigned int host_info_eax; | |
601 | extern unsigned int host_info_ebx; | |
602 | extern unsigned int host_info_ecx; | |
603 | extern unsigned int host_info_edx; | |
940655c1 S |
604 | |
605 | /* Interface */ | |
606 | ||
607 | ||
608 | int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void *buffer, | |
609 | u32 buflen); | |
610 | ||
611 | void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info); | |
612 | ||
613 | int hv_ringbuffer_write(struct hv_ring_buffer_info *ring_info, | |
011a7c3c S |
614 | struct kvec *kv_list, |
615 | u32 kv_count, bool *signal); | |
940655c1 S |
616 | |
617 | int hv_ringbuffer_peek(struct hv_ring_buffer_info *ring_info, void *buffer, | |
618 | u32 buflen); | |
619 | ||
620 | int hv_ringbuffer_read(struct hv_ring_buffer_info *ring_info, | |
621 | void *buffer, | |
622 | u32 buflen, | |
c2b8e520 | 623 | u32 offset, bool *signal); |
940655c1 | 624 | |
940655c1 | 625 | |
940655c1 S |
626 | void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info, |
627 | struct hv_ring_buffer_debug_info *debug_info); | |
628 | ||
6fdf3b21 S |
629 | void hv_begin_read(struct hv_ring_buffer_info *rbi); |
630 | ||
631 | u32 hv_end_read(struct hv_ring_buffer_info *rbi); | |
632 | ||
89b2ca47 S |
633 | /* |
634 | * Maximum channels is determined by the size of the interrupt page | |
635 | * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt | |
636 | * and the other is receive endpoint interrupt | |
637 | */ | |
638 | #define MAX_NUM_CHANNELS ((PAGE_SIZE >> 1) << 3) /* 16348 channels */ | |
639 | ||
640 | /* The value here must be in multiple of 32 */ | |
641 | /* TODO: Need to make this configurable */ | |
642 | #define MAX_NUM_CHANNELS_SUPPORTED 256 | |
643 | ||
644 | ||
645 | enum vmbus_connect_state { | |
646 | DISCONNECTED, | |
647 | CONNECTING, | |
648 | CONNECTED, | |
649 | DISCONNECTING | |
650 | }; | |
651 | ||
652 | #define MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT | |
653 | ||
654 | struct vmbus_connection { | |
655 | enum vmbus_connect_state conn_state; | |
656 | ||
657 | atomic_t next_gpadl_handle; | |
658 | ||
2db84eff | 659 | struct completion unload_event; |
89b2ca47 S |
660 | /* |
661 | * Represents channel interrupts. Each bit position represents a | |
662 | * channel. When a channel sends an interrupt via VMBUS, it finds its | |
663 | * bit in the sendInterruptPage, set it and calls Hv to generate a port | |
664 | * event. The other end receives the port event and parse the | |
665 | * recvInterruptPage to see which bit is set | |
666 | */ | |
667 | void *int_page; | |
668 | void *send_int_page; | |
669 | void *recv_int_page; | |
670 | ||
671 | /* | |
672 | * 2 pages - 1st page for parent->child notification and 2nd | |
673 | * is child->parent notification | |
674 | */ | |
8681db44 | 675 | struct hv_monitor_page *monitor_pages[2]; |
89b2ca47 S |
676 | struct list_head chn_msg_list; |
677 | spinlock_t channelmsg_lock; | |
678 | ||
679 | /* List of channels */ | |
680 | struct list_head chn_list; | |
681 | spinlock_t channel_lock; | |
682 | ||
683 | struct workqueue_struct *work_queue; | |
684 | }; | |
685 | ||
686 | ||
687 | struct vmbus_msginfo { | |
688 | /* Bookkeeping stuff */ | |
689 | struct list_head msglist_entry; | |
690 | ||
691 | /* The message itself */ | |
692 | unsigned char msg[0]; | |
693 | }; | |
694 | ||
695 | ||
696 | extern struct vmbus_connection vmbus_connection; | |
697 | ||
652594c7 DC |
698 | enum vmbus_message_handler_type { |
699 | /* The related handler can sleep. */ | |
700 | VMHT_BLOCKING = 0, | |
701 | ||
702 | /* The related handler must NOT sleep. */ | |
703 | VMHT_NON_BLOCKING = 1, | |
704 | }; | |
705 | ||
706 | struct vmbus_channel_message_table_entry { | |
707 | enum vmbus_channel_message_type message_type; | |
708 | enum vmbus_message_handler_type handler_type; | |
709 | void (*message_handler)(struct vmbus_channel_message_header *msg); | |
710 | }; | |
711 | ||
712 | extern struct vmbus_channel_message_table_entry | |
713 | channel_message_table[CHANNELMSG_COUNT]; | |
714 | ||
89b2ca47 S |
715 | /* General vmbus interface */ |
716 | ||
1b9d48f2 | 717 | struct hv_device *vmbus_device_create(const uuid_le *type, |
718 | const uuid_le *instance, | |
719 | struct vmbus_channel *channel); | |
89b2ca47 | 720 | |
22794281 | 721 | int vmbus_device_register(struct hv_device *child_device_obj); |
696453ba | 722 | void vmbus_device_unregister(struct hv_device *device_obj); |
89b2ca47 S |
723 | |
724 | /* static void */ | |
725 | /* VmbusChildDeviceDestroy( */ | |
726 | /* struct hv_device *); */ | |
727 | ||
d43e2fe7 | 728 | struct vmbus_channel *relid2channel(u32 relid); |
89b2ca47 | 729 | |
93e5bd06 | 730 | void vmbus_free_channels(void); |
89b2ca47 S |
731 | |
732 | /* Connection interface */ | |
733 | ||
734 | int vmbus_connect(void); | |
09a19628 | 735 | void vmbus_disconnect(void); |
89b2ca47 | 736 | |
89b2ca47 S |
737 | int vmbus_post_msg(void *buffer, size_t buflen); |
738 | ||
21c3bef5 | 739 | int vmbus_set_event(struct vmbus_channel *channel); |
89b2ca47 S |
740 | |
741 | void vmbus_on_event(unsigned long data); | |
742 | ||
3647a83d VK |
743 | int hv_kvp_init(struct hv_util_service *); |
744 | void hv_kvp_deinit(void); | |
745 | void hv_kvp_onchannelcallback(void *); | |
746 | ||
747 | int hv_vss_init(struct hv_util_service *); | |
748 | void hv_vss_deinit(void); | |
749 | void hv_vss_onchannelcallback(void *); | |
750 | ||
01325476 S |
751 | int hv_fcopy_init(struct hv_util_service *); |
752 | void hv_fcopy_deinit(void); | |
753 | void hv_fcopy_onchannelcallback(void *); | |
2db84eff | 754 | void vmbus_initiate_unload(void); |
01325476 | 755 | |
8efe78fd VK |
756 | static inline void hv_poll_channel(struct vmbus_channel *channel, |
757 | void (*cb)(void *)) | |
758 | { | |
759 | if (!channel) | |
760 | return; | |
761 | ||
762 | if (channel->target_cpu != smp_processor_id()) | |
763 | smp_call_function_single(channel->target_cpu, | |
764 | cb, channel, true); | |
765 | else | |
766 | cb(channel); | |
767 | } | |
89b2ca47 | 768 | |
636c88da VK |
769 | enum hvutil_device_state { |
770 | HVUTIL_DEVICE_INIT = 0, /* driver is loaded, waiting for userspace */ | |
771 | HVUTIL_READY, /* userspace is registered */ | |
772 | HVUTIL_HOSTMSG_RECEIVED, /* message from the host was received */ | |
773 | HVUTIL_USERSPACE_REQ, /* request to userspace was sent */ | |
774 | HVUTIL_USERSPACE_RECV, /* reply from userspace was received */ | |
775 | HVUTIL_DEVICE_DYING, /* driver unload is in progress */ | |
776 | }; | |
777 | ||
0f2a6619 | 778 | #endif /* _HYPERV_VMBUS_H */ |