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5c473400 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 | */ | |
3f335ea2 S |
24 | |
25 | #ifndef _HYPERV_H | |
26 | #define _HYPERV_H | |
27 | ||
5267cf02 | 28 | #include <uapi/linux/hyperv.h> |
2939437c | 29 | |
5267cf02 | 30 | #include <linux/types.h> |
8ff3e6fc S |
31 | #include <linux/scatterlist.h> |
32 | #include <linux/list.h> | |
33 | #include <linux/timer.h> | |
34 | #include <linux/workqueue.h> | |
35 | #include <linux/completion.h> | |
36 | #include <linux/device.h> | |
2e2c1d17 | 37 | #include <linux/mod_devicetable.h> |
8ff3e6fc S |
38 | |
39 | ||
7e5ec368 | 40 | #define MAX_PAGE_BUFFER_COUNT 32 |
a363bf7b S |
41 | #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ |
42 | ||
43 | #pragma pack(push, 1) | |
44 | ||
45 | /* Single-page buffer */ | |
46 | struct hv_page_buffer { | |
47 | u32 len; | |
48 | u32 offset; | |
49 | u64 pfn; | |
50 | }; | |
51 | ||
52 | /* Multiple-page buffer */ | |
53 | struct hv_multipage_buffer { | |
54 | /* Length and Offset determines the # of pfns in the array */ | |
55 | u32 len; | |
56 | u32 offset; | |
57 | u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; | |
58 | }; | |
59 | ||
60 | /* 0x18 includes the proprietary packet header */ | |
61 | #define MAX_PAGE_BUFFER_PACKET (0x18 + \ | |
62 | (sizeof(struct hv_page_buffer) * \ | |
63 | MAX_PAGE_BUFFER_COUNT)) | |
64 | #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ | |
65 | sizeof(struct hv_multipage_buffer)) | |
66 | ||
67 | ||
68 | #pragma pack(pop) | |
69 | ||
7effffb7 S |
70 | struct hv_ring_buffer { |
71 | /* Offset in bytes from the start of ring data below */ | |
72 | u32 write_index; | |
73 | ||
74 | /* Offset in bytes from the start of ring data below */ | |
75 | u32 read_index; | |
76 | ||
77 | u32 interrupt_mask; | |
78 | ||
2416603e S |
79 | /* |
80 | * Win8 uses some of the reserved bits to implement | |
81 | * interrupt driven flow management. On the send side | |
82 | * we can request that the receiver interrupt the sender | |
83 | * when the ring transitions from being full to being able | |
84 | * to handle a message of size "pending_send_sz". | |
85 | * | |
86 | * Add necessary state for this enhancement. | |
7effffb7 | 87 | */ |
2416603e S |
88 | u32 pending_send_sz; |
89 | ||
90 | u32 reserved1[12]; | |
91 | ||
92 | union { | |
93 | struct { | |
94 | u32 feat_pending_send_sz:1; | |
95 | }; | |
96 | u32 value; | |
97 | } feature_bits; | |
98 | ||
99 | /* Pad it to PAGE_SIZE so that data starts on page boundary */ | |
100 | u8 reserved2[4028]; | |
7effffb7 S |
101 | |
102 | /* | |
103 | * Ring data starts here + RingDataStartOffset | |
104 | * !!! DO NOT place any fields below this !!! | |
105 | */ | |
106 | u8 buffer[0]; | |
107 | } __packed; | |
108 | ||
109 | struct hv_ring_buffer_info { | |
110 | struct hv_ring_buffer *ring_buffer; | |
111 | u32 ring_size; /* Include the shared header */ | |
112 | spinlock_t ring_lock; | |
113 | ||
114 | u32 ring_datasize; /* < ring_size */ | |
115 | u32 ring_data_startoffset; | |
116 | }; | |
117 | ||
33be96e4 HZ |
118 | /* |
119 | * | |
120 | * hv_get_ringbuffer_availbytes() | |
121 | * | |
122 | * Get number of bytes available to read and to write to | |
123 | * for the specified ring buffer | |
124 | */ | |
125 | static inline void | |
126 | hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, | |
127 | u32 *read, u32 *write) | |
128 | { | |
129 | u32 read_loc, write_loc, dsize; | |
130 | ||
131 | smp_read_barrier_depends(); | |
132 | ||
133 | /* Capture the read/write indices before they changed */ | |
134 | read_loc = rbi->ring_buffer->read_index; | |
135 | write_loc = rbi->ring_buffer->write_index; | |
136 | dsize = rbi->ring_datasize; | |
137 | ||
138 | *write = write_loc >= read_loc ? dsize - (write_loc - read_loc) : | |
139 | read_loc - write_loc; | |
140 | *read = dsize - *write; | |
141 | } | |
142 | ||
eafa7072 S |
143 | /* |
144 | * VMBUS version is 32 bit entity broken up into | |
145 | * two 16 bit quantities: major_number. minor_number. | |
146 | * | |
147 | * 0 . 13 (Windows Server 2008) | |
148 | * 1 . 1 (Windows 7) | |
149 | * 2 . 4 (Windows 8) | |
03367ef5 | 150 | * 3 . 0 (Windows 8 R2) |
eafa7072 S |
151 | */ |
152 | ||
153 | #define VERSION_WS2008 ((0 << 16) | (13)) | |
154 | #define VERSION_WIN7 ((1 << 16) | (1)) | |
155 | #define VERSION_WIN8 ((2 << 16) | (4)) | |
03367ef5 | 156 | #define VERSION_WIN8_1 ((3 << 16) | (0)) |
eafa7072 S |
157 | |
158 | #define VERSION_INVAL -1 | |
159 | ||
03367ef5 | 160 | #define VERSION_CURRENT VERSION_WIN8_1 |
f7c6dfda | 161 | |
517d8dc6 S |
162 | /* Make maximum size of pipe payload of 16K */ |
163 | #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) | |
164 | ||
165 | /* Define PipeMode values. */ | |
166 | #define VMBUS_PIPE_TYPE_BYTE 0x00000000 | |
167 | #define VMBUS_PIPE_TYPE_MESSAGE 0x00000004 | |
168 | ||
169 | /* The size of the user defined data buffer for non-pipe offers. */ | |
170 | #define MAX_USER_DEFINED_BYTES 120 | |
171 | ||
172 | /* The size of the user defined data buffer for pipe offers. */ | |
173 | #define MAX_PIPE_USER_DEFINED_BYTES 116 | |
174 | ||
175 | /* | |
176 | * At the center of the Channel Management library is the Channel Offer. This | |
177 | * struct contains the fundamental information about an offer. | |
178 | */ | |
179 | struct vmbus_channel_offer { | |
358d2ee2 S |
180 | uuid_le if_type; |
181 | uuid_le if_instance; | |
29423b7e S |
182 | |
183 | /* | |
184 | * These two fields are not currently used. | |
185 | */ | |
186 | u64 reserved1; | |
187 | u64 reserved2; | |
188 | ||
517d8dc6 S |
189 | u16 chn_flags; |
190 | u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ | |
191 | ||
192 | union { | |
193 | /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */ | |
194 | struct { | |
195 | unsigned char user_def[MAX_USER_DEFINED_BYTES]; | |
196 | } std; | |
197 | ||
198 | /* | |
199 | * Pipes: | |
200 | * The following sructure is an integrated pipe protocol, which | |
201 | * is implemented on top of standard user-defined data. Pipe | |
202 | * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own | |
203 | * use. | |
204 | */ | |
205 | struct { | |
206 | u32 pipe_mode; | |
207 | unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; | |
208 | } pipe; | |
209 | } u; | |
29423b7e S |
210 | /* |
211 | * The sub_channel_index is defined in win8. | |
212 | */ | |
213 | u16 sub_channel_index; | |
214 | u16 reserved3; | |
517d8dc6 S |
215 | } __packed; |
216 | ||
217 | /* Server Flags */ | |
218 | #define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1 | |
219 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2 | |
220 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4 | |
221 | #define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10 | |
222 | #define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100 | |
223 | #define VMBUS_CHANNEL_PARENT_OFFER 0x200 | |
224 | #define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400 | |
225 | ||
50ed40e0 S |
226 | struct vmpacket_descriptor { |
227 | u16 type; | |
228 | u16 offset8; | |
229 | u16 len8; | |
230 | u16 flags; | |
231 | u64 trans_id; | |
232 | } __packed; | |
233 | ||
234 | struct vmpacket_header { | |
235 | u32 prev_pkt_start_offset; | |
236 | struct vmpacket_descriptor descriptor; | |
237 | } __packed; | |
238 | ||
239 | struct vmtransfer_page_range { | |
240 | u32 byte_count; | |
241 | u32 byte_offset; | |
242 | } __packed; | |
243 | ||
244 | struct vmtransfer_page_packet_header { | |
245 | struct vmpacket_descriptor d; | |
246 | u16 xfer_pageset_id; | |
1508d811 | 247 | u8 sender_owns_set; |
50ed40e0 S |
248 | u8 reserved; |
249 | u32 range_cnt; | |
250 | struct vmtransfer_page_range ranges[1]; | |
251 | } __packed; | |
252 | ||
253 | struct vmgpadl_packet_header { | |
254 | struct vmpacket_descriptor d; | |
255 | u32 gpadl; | |
256 | u32 reserved; | |
257 | } __packed; | |
258 | ||
259 | struct vmadd_remove_transfer_page_set { | |
260 | struct vmpacket_descriptor d; | |
261 | u32 gpadl; | |
262 | u16 xfer_pageset_id; | |
263 | u16 reserved; | |
264 | } __packed; | |
265 | ||
266 | /* | |
267 | * This structure defines a range in guest physical space that can be made to | |
268 | * look virtually contiguous. | |
269 | */ | |
270 | struct gpa_range { | |
271 | u32 byte_count; | |
272 | u32 byte_offset; | |
273 | u64 pfn_array[0]; | |
274 | }; | |
275 | ||
276 | /* | |
277 | * This is the format for an Establish Gpadl packet, which contains a handle by | |
278 | * which this GPADL will be known and a set of GPA ranges associated with it. | |
279 | * This can be converted to a MDL by the guest OS. If there are multiple GPA | |
280 | * ranges, then the resulting MDL will be "chained," representing multiple VA | |
281 | * ranges. | |
282 | */ | |
283 | struct vmestablish_gpadl { | |
284 | struct vmpacket_descriptor d; | |
285 | u32 gpadl; | |
286 | u32 range_cnt; | |
287 | struct gpa_range range[1]; | |
288 | } __packed; | |
289 | ||
290 | /* | |
291 | * This is the format for a Teardown Gpadl packet, which indicates that the | |
292 | * GPADL handle in the Establish Gpadl packet will never be referenced again. | |
293 | */ | |
294 | struct vmteardown_gpadl { | |
295 | struct vmpacket_descriptor d; | |
296 | u32 gpadl; | |
297 | u32 reserved; /* for alignment to a 8-byte boundary */ | |
298 | } __packed; | |
299 | ||
300 | /* | |
301 | * This is the format for a GPA-Direct packet, which contains a set of GPA | |
302 | * ranges, in addition to commands and/or data. | |
303 | */ | |
304 | struct vmdata_gpa_direct { | |
305 | struct vmpacket_descriptor d; | |
306 | u32 reserved; | |
307 | u32 range_cnt; | |
308 | struct gpa_range range[1]; | |
309 | } __packed; | |
310 | ||
311 | /* This is the format for a Additional Data Packet. */ | |
312 | struct vmadditional_data { | |
313 | struct vmpacket_descriptor d; | |
314 | u64 total_bytes; | |
315 | u32 offset; | |
316 | u32 byte_cnt; | |
317 | unsigned char data[1]; | |
318 | } __packed; | |
319 | ||
320 | union vmpacket_largest_possible_header { | |
321 | struct vmpacket_descriptor simple_hdr; | |
322 | struct vmtransfer_page_packet_header xfer_page_hdr; | |
323 | struct vmgpadl_packet_header gpadl_hdr; | |
324 | struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr; | |
325 | struct vmestablish_gpadl establish_gpadl_hdr; | |
326 | struct vmteardown_gpadl teardown_gpadl_hdr; | |
327 | struct vmdata_gpa_direct data_gpa_direct_hdr; | |
328 | }; | |
329 | ||
330 | #define VMPACKET_DATA_START_ADDRESS(__packet) \ | |
331 | (void *)(((unsigned char *)__packet) + \ | |
332 | ((struct vmpacket_descriptor)__packet)->offset8 * 8) | |
333 | ||
334 | #define VMPACKET_DATA_LENGTH(__packet) \ | |
335 | ((((struct vmpacket_descriptor)__packet)->len8 - \ | |
336 | ((struct vmpacket_descriptor)__packet)->offset8) * 8) | |
337 | ||
338 | #define VMPACKET_TRANSFER_MODE(__packet) \ | |
339 | (((struct IMPACT)__packet)->type) | |
340 | ||
341 | enum vmbus_packet_type { | |
342 | VM_PKT_INVALID = 0x0, | |
343 | VM_PKT_SYNCH = 0x1, | |
344 | VM_PKT_ADD_XFER_PAGESET = 0x2, | |
345 | VM_PKT_RM_XFER_PAGESET = 0x3, | |
346 | VM_PKT_ESTABLISH_GPADL = 0x4, | |
347 | VM_PKT_TEARDOWN_GPADL = 0x5, | |
348 | VM_PKT_DATA_INBAND = 0x6, | |
349 | VM_PKT_DATA_USING_XFER_PAGES = 0x7, | |
350 | VM_PKT_DATA_USING_GPADL = 0x8, | |
351 | VM_PKT_DATA_USING_GPA_DIRECT = 0x9, | |
352 | VM_PKT_CANCEL_REQUEST = 0xa, | |
353 | VM_PKT_COMP = 0xb, | |
354 | VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc, | |
355 | VM_PKT_ADDITIONAL_DATA = 0xd | |
356 | }; | |
357 | ||
358 | #define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 | |
517d8dc6 | 359 | |
b56dda06 | 360 | |
b56dda06 S |
361 | /* Version 1 messages */ |
362 | enum vmbus_channel_message_type { | |
363 | CHANNELMSG_INVALID = 0, | |
364 | CHANNELMSG_OFFERCHANNEL = 1, | |
365 | CHANNELMSG_RESCIND_CHANNELOFFER = 2, | |
366 | CHANNELMSG_REQUESTOFFERS = 3, | |
367 | CHANNELMSG_ALLOFFERS_DELIVERED = 4, | |
368 | CHANNELMSG_OPENCHANNEL = 5, | |
369 | CHANNELMSG_OPENCHANNEL_RESULT = 6, | |
370 | CHANNELMSG_CLOSECHANNEL = 7, | |
371 | CHANNELMSG_GPADL_HEADER = 8, | |
372 | CHANNELMSG_GPADL_BODY = 9, | |
373 | CHANNELMSG_GPADL_CREATED = 10, | |
374 | CHANNELMSG_GPADL_TEARDOWN = 11, | |
375 | CHANNELMSG_GPADL_TORNDOWN = 12, | |
376 | CHANNELMSG_RELID_RELEASED = 13, | |
377 | CHANNELMSG_INITIATE_CONTACT = 14, | |
378 | CHANNELMSG_VERSION_RESPONSE = 15, | |
379 | CHANNELMSG_UNLOAD = 16, | |
380 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
381 | CHANNELMSG_VIEWRANGE_ADD = 17, | |
382 | CHANNELMSG_VIEWRANGE_REMOVE = 18, | |
383 | #endif | |
384 | CHANNELMSG_COUNT | |
385 | }; | |
386 | ||
387 | struct vmbus_channel_message_header { | |
388 | enum vmbus_channel_message_type msgtype; | |
389 | u32 padding; | |
390 | } __packed; | |
391 | ||
392 | /* Query VMBus Version parameters */ | |
393 | struct vmbus_channel_query_vmbus_version { | |
394 | struct vmbus_channel_message_header header; | |
395 | u32 version; | |
396 | } __packed; | |
397 | ||
398 | /* VMBus Version Supported parameters */ | |
399 | struct vmbus_channel_version_supported { | |
400 | struct vmbus_channel_message_header header; | |
1508d811 | 401 | u8 version_supported; |
b56dda06 S |
402 | } __packed; |
403 | ||
404 | /* Offer Channel parameters */ | |
405 | struct vmbus_channel_offer_channel { | |
406 | struct vmbus_channel_message_header header; | |
407 | struct vmbus_channel_offer offer; | |
408 | u32 child_relid; | |
409 | u8 monitorid; | |
29423b7e S |
410 | /* |
411 | * win7 and beyond splits this field into a bit field. | |
412 | */ | |
413 | u8 monitor_allocated:1; | |
414 | u8 reserved:7; | |
415 | /* | |
416 | * These are new fields added in win7 and later. | |
417 | * Do not access these fields without checking the | |
418 | * negotiated protocol. | |
419 | * | |
420 | * If "is_dedicated_interrupt" is set, we must not set the | |
421 | * associated bit in the channel bitmap while sending the | |
422 | * interrupt to the host. | |
423 | * | |
424 | * connection_id is to be used in signaling the host. | |
425 | */ | |
426 | u16 is_dedicated_interrupt:1; | |
427 | u16 reserved1:15; | |
428 | u32 connection_id; | |
b56dda06 S |
429 | } __packed; |
430 | ||
431 | /* Rescind Offer parameters */ | |
432 | struct vmbus_channel_rescind_offer { | |
433 | struct vmbus_channel_message_header header; | |
434 | u32 child_relid; | |
435 | } __packed; | |
436 | ||
437 | /* | |
438 | * Request Offer -- no parameters, SynIC message contains the partition ID | |
439 | * Set Snoop -- no parameters, SynIC message contains the partition ID | |
440 | * Clear Snoop -- no parameters, SynIC message contains the partition ID | |
441 | * All Offers Delivered -- no parameters, SynIC message contains the partition | |
442 | * ID | |
443 | * Flush Client -- no parameters, SynIC message contains the partition ID | |
444 | */ | |
445 | ||
446 | /* Open Channel parameters */ | |
447 | struct vmbus_channel_open_channel { | |
448 | struct vmbus_channel_message_header header; | |
449 | ||
450 | /* Identifies the specific VMBus channel that is being opened. */ | |
451 | u32 child_relid; | |
452 | ||
453 | /* ID making a particular open request at a channel offer unique. */ | |
454 | u32 openid; | |
455 | ||
456 | /* GPADL for the channel's ring buffer. */ | |
457 | u32 ringbuffer_gpadlhandle; | |
458 | ||
abbf3b2a S |
459 | /* |
460 | * Starting with win8, this field will be used to specify | |
461 | * the target virtual processor on which to deliver the interrupt for | |
462 | * the host to guest communication. | |
463 | * Prior to win8, incoming channel interrupts would only | |
464 | * be delivered on cpu 0. Setting this value to 0 would | |
465 | * preserve the earlier behavior. | |
466 | */ | |
467 | u32 target_vp; | |
b56dda06 S |
468 | |
469 | /* | |
470 | * The upstream ring buffer begins at offset zero in the memory | |
471 | * described by RingBufferGpadlHandle. The downstream ring buffer | |
472 | * follows it at this offset (in pages). | |
473 | */ | |
474 | u32 downstream_ringbuffer_pageoffset; | |
475 | ||
476 | /* User-specific data to be passed along to the server endpoint. */ | |
477 | unsigned char userdata[MAX_USER_DEFINED_BYTES]; | |
478 | } __packed; | |
479 | ||
480 | /* Open Channel Result parameters */ | |
481 | struct vmbus_channel_open_result { | |
482 | struct vmbus_channel_message_header header; | |
483 | u32 child_relid; | |
484 | u32 openid; | |
485 | u32 status; | |
486 | } __packed; | |
487 | ||
488 | /* Close channel parameters; */ | |
489 | struct vmbus_channel_close_channel { | |
490 | struct vmbus_channel_message_header header; | |
491 | u32 child_relid; | |
492 | } __packed; | |
493 | ||
494 | /* Channel Message GPADL */ | |
495 | #define GPADL_TYPE_RING_BUFFER 1 | |
496 | #define GPADL_TYPE_SERVER_SAVE_AREA 2 | |
497 | #define GPADL_TYPE_TRANSACTION 8 | |
498 | ||
499 | /* | |
500 | * The number of PFNs in a GPADL message is defined by the number of | |
501 | * pages that would be spanned by ByteCount and ByteOffset. If the | |
502 | * implied number of PFNs won't fit in this packet, there will be a | |
503 | * follow-up packet that contains more. | |
504 | */ | |
505 | struct vmbus_channel_gpadl_header { | |
506 | struct vmbus_channel_message_header header; | |
507 | u32 child_relid; | |
508 | u32 gpadl; | |
509 | u16 range_buflen; | |
510 | u16 rangecount; | |
511 | struct gpa_range range[0]; | |
512 | } __packed; | |
513 | ||
514 | /* This is the followup packet that contains more PFNs. */ | |
515 | struct vmbus_channel_gpadl_body { | |
516 | struct vmbus_channel_message_header header; | |
517 | u32 msgnumber; | |
518 | u32 gpadl; | |
519 | u64 pfn[0]; | |
520 | } __packed; | |
521 | ||
522 | struct vmbus_channel_gpadl_created { | |
523 | struct vmbus_channel_message_header header; | |
524 | u32 child_relid; | |
525 | u32 gpadl; | |
526 | u32 creation_status; | |
527 | } __packed; | |
528 | ||
529 | struct vmbus_channel_gpadl_teardown { | |
530 | struct vmbus_channel_message_header header; | |
531 | u32 child_relid; | |
532 | u32 gpadl; | |
533 | } __packed; | |
534 | ||
535 | struct vmbus_channel_gpadl_torndown { | |
536 | struct vmbus_channel_message_header header; | |
537 | u32 gpadl; | |
538 | } __packed; | |
539 | ||
540 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
541 | struct vmbus_channel_view_range_add { | |
542 | struct vmbus_channel_message_header header; | |
543 | PHYSICAL_ADDRESS viewrange_base; | |
544 | u64 viewrange_length; | |
545 | u32 child_relid; | |
546 | } __packed; | |
547 | ||
548 | struct vmbus_channel_view_range_remove { | |
549 | struct vmbus_channel_message_header header; | |
550 | PHYSICAL_ADDRESS viewrange_base; | |
551 | u32 child_relid; | |
552 | } __packed; | |
553 | #endif | |
554 | ||
555 | struct vmbus_channel_relid_released { | |
556 | struct vmbus_channel_message_header header; | |
557 | u32 child_relid; | |
558 | } __packed; | |
559 | ||
560 | struct vmbus_channel_initiate_contact { | |
561 | struct vmbus_channel_message_header header; | |
562 | u32 vmbus_version_requested; | |
e28bab48 | 563 | u32 target_vcpu; /* The VCPU the host should respond to */ |
b56dda06 S |
564 | u64 interrupt_page; |
565 | u64 monitor_page1; | |
566 | u64 monitor_page2; | |
567 | } __packed; | |
568 | ||
569 | struct vmbus_channel_version_response { | |
570 | struct vmbus_channel_message_header header; | |
1508d811 | 571 | u8 version_supported; |
b56dda06 S |
572 | } __packed; |
573 | ||
574 | enum vmbus_channel_state { | |
575 | CHANNEL_OFFER_STATE, | |
576 | CHANNEL_OPENING_STATE, | |
577 | CHANNEL_OPEN_STATE, | |
e68d2971 | 578 | CHANNEL_OPENED_STATE, |
b56dda06 S |
579 | }; |
580 | ||
b56dda06 S |
581 | /* |
582 | * Represents each channel msg on the vmbus connection This is a | |
583 | * variable-size data structure depending on the msg type itself | |
584 | */ | |
585 | struct vmbus_channel_msginfo { | |
586 | /* Bookkeeping stuff */ | |
587 | struct list_head msglistentry; | |
588 | ||
589 | /* So far, this is only used to handle gpadl body message */ | |
590 | struct list_head submsglist; | |
591 | ||
592 | /* Synchronize the request/response if needed */ | |
593 | struct completion waitevent; | |
594 | union { | |
595 | struct vmbus_channel_version_supported version_supported; | |
596 | struct vmbus_channel_open_result open_result; | |
597 | struct vmbus_channel_gpadl_torndown gpadl_torndown; | |
598 | struct vmbus_channel_gpadl_created gpadl_created; | |
599 | struct vmbus_channel_version_response version_response; | |
600 | } response; | |
601 | ||
602 | u32 msgsize; | |
603 | /* | |
604 | * The channel message that goes out on the "wire". | |
605 | * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header | |
606 | */ | |
607 | unsigned char msg[0]; | |
608 | }; | |
609 | ||
f9f1db83 S |
610 | struct vmbus_close_msg { |
611 | struct vmbus_channel_msginfo info; | |
612 | struct vmbus_channel_close_channel msg; | |
613 | }; | |
614 | ||
b3bf60c7 S |
615 | /* Define connection identifier type. */ |
616 | union hv_connection_id { | |
617 | u32 asu32; | |
618 | struct { | |
619 | u32 id:24; | |
620 | u32 reserved:8; | |
621 | } u; | |
622 | }; | |
623 | ||
624 | /* Definition of the hv_signal_event hypercall input structure. */ | |
625 | struct hv_input_signal_event { | |
626 | union hv_connection_id connectionid; | |
627 | u16 flag_number; | |
628 | u16 rsvdz; | |
629 | }; | |
630 | ||
631 | struct hv_input_signal_event_buffer { | |
632 | u64 align8; | |
633 | struct hv_input_signal_event event; | |
634 | }; | |
635 | ||
7d7c75cd S |
636 | struct vmbus_channel { |
637 | struct list_head listentry; | |
638 | ||
639 | struct hv_device *device_obj; | |
640 | ||
641 | struct work_struct work; | |
642 | ||
643 | enum vmbus_channel_state state; | |
7d7c75cd S |
644 | |
645 | struct vmbus_channel_offer_channel offermsg; | |
646 | /* | |
647 | * These are based on the OfferMsg.MonitorId. | |
648 | * Save it here for easy access. | |
649 | */ | |
650 | u8 monitor_grp; | |
651 | u8 monitor_bit; | |
652 | ||
653 | u32 ringbuffer_gpadlhandle; | |
654 | ||
655 | /* Allocated memory for ring buffer */ | |
656 | void *ringbuffer_pages; | |
657 | u32 ringbuffer_pagecount; | |
658 | struct hv_ring_buffer_info outbound; /* send to parent */ | |
659 | struct hv_ring_buffer_info inbound; /* receive from parent */ | |
660 | spinlock_t inbound_lock; | |
661 | struct workqueue_struct *controlwq; | |
662 | ||
f9f1db83 S |
663 | struct vmbus_close_msg close_msg; |
664 | ||
7d7c75cd S |
665 | /* Channel callback are invoked in this workqueue context */ |
666 | /* HANDLE dataWorkQueue; */ | |
667 | ||
668 | void (*onchannel_callback)(void *context); | |
669 | void *channel_callback_context; | |
132368bd S |
670 | |
671 | /* | |
672 | * A channel can be marked for efficient (batched) | |
673 | * reading: | |
674 | * If batched_reading is set to "true", we read until the | |
675 | * channel is empty and hold off interrupts from the host | |
676 | * during the entire read process. | |
677 | * If batched_reading is set to "false", the client is not | |
678 | * going to perform batched reading. | |
679 | * | |
680 | * By default we will enable batched reading; specific | |
681 | * drivers that don't want this behavior can turn it off. | |
682 | */ | |
683 | ||
684 | bool batched_reading; | |
b3bf60c7 S |
685 | |
686 | bool is_dedicated_interrupt; | |
687 | struct hv_input_signal_event_buffer sig_buf; | |
688 | struct hv_input_signal_event *sig_event; | |
abbf3b2a S |
689 | |
690 | /* | |
691 | * Starting with win8, this field will be used to specify | |
692 | * the target virtual processor on which to deliver the interrupt for | |
693 | * the host to guest communication. | |
694 | * Prior to win8, incoming channel interrupts would only | |
695 | * be delivered on cpu 0. Setting this value to 0 would | |
696 | * preserve the earlier behavior. | |
697 | */ | |
698 | u32 target_vp; | |
e68d2971 S |
699 | /* |
700 | * Support for sub-channels. For high performance devices, | |
701 | * it will be useful to have multiple sub-channels to support | |
702 | * a scalable communication infrastructure with the host. | |
703 | * The support for sub-channels is implemented as an extention | |
704 | * to the current infrastructure. | |
705 | * The initial offer is considered the primary channel and this | |
706 | * offer message will indicate if the host supports sub-channels. | |
707 | * The guest is free to ask for sub-channels to be offerred and can | |
708 | * open these sub-channels as a normal "primary" channel. However, | |
709 | * all sub-channels will have the same type and instance guids as the | |
710 | * primary channel. Requests sent on a given channel will result in a | |
711 | * response on the same channel. | |
712 | */ | |
713 | ||
714 | /* | |
715 | * Sub-channel creation callback. This callback will be called in | |
716 | * process context when a sub-channel offer is received from the host. | |
717 | * The guest can open the sub-channel in the context of this callback. | |
718 | */ | |
719 | void (*sc_creation_callback)(struct vmbus_channel *new_sc); | |
720 | ||
721 | spinlock_t sc_lock; | |
722 | /* | |
723 | * All Sub-channels of a primary channel are linked here. | |
724 | */ | |
725 | struct list_head sc_list; | |
726 | /* | |
727 | * The primary channel this sub-channel belongs to. | |
728 | * This will be NULL for the primary channel. | |
729 | */ | |
730 | struct vmbus_channel *primary_channel; | |
8a7206a8 S |
731 | /* |
732 | * Support per-channel state for use by vmbus drivers. | |
733 | */ | |
734 | void *per_channel_state; | |
7d7c75cd | 735 | }; |
b56dda06 | 736 | |
132368bd S |
737 | static inline void set_channel_read_state(struct vmbus_channel *c, bool state) |
738 | { | |
739 | c->batched_reading = state; | |
740 | } | |
741 | ||
8a7206a8 S |
742 | static inline void set_per_channel_state(struct vmbus_channel *c, void *s) |
743 | { | |
744 | c->per_channel_state = s; | |
745 | } | |
746 | ||
747 | static inline void *get_per_channel_state(struct vmbus_channel *c) | |
748 | { | |
749 | return c->per_channel_state; | |
750 | } | |
751 | ||
b56dda06 S |
752 | void vmbus_onmessage(void *context); |
753 | ||
754 | int vmbus_request_offers(void); | |
755 | ||
e68d2971 S |
756 | /* |
757 | * APIs for managing sub-channels. | |
758 | */ | |
759 | ||
760 | void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel, | |
761 | void (*sc_cr_cb)(struct vmbus_channel *new_sc)); | |
762 | ||
763 | /* | |
764 | * Retrieve the (sub) channel on which to send an outgoing request. | |
765 | * When a primary channel has multiple sub-channels, we choose a | |
766 | * channel whose VCPU binding is closest to the VCPU on which | |
767 | * this call is being made. | |
768 | */ | |
769 | struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary); | |
770 | ||
771 | /* | |
772 | * Check if sub-channels have already been offerred. This API will be useful | |
773 | * when the driver is unloaded after establishing sub-channels. In this case, | |
774 | * when the driver is re-loaded, the driver would have to check if the | |
775 | * subchannels have already been established before attempting to request | |
776 | * the creation of sub-channels. | |
777 | * This function returns TRUE to indicate that subchannels have already been | |
778 | * created. | |
779 | * This function should be invoked after setting the callback function for | |
780 | * sub-channel creation. | |
781 | */ | |
782 | bool vmbus_are_subchannels_present(struct vmbus_channel *primary); | |
783 | ||
c35470b2 S |
784 | /* The format must be the same as struct vmdata_gpa_direct */ |
785 | struct vmbus_channel_packet_page_buffer { | |
786 | u16 type; | |
787 | u16 dataoffset8; | |
788 | u16 length8; | |
789 | u16 flags; | |
790 | u64 transactionid; | |
791 | u32 reserved; | |
792 | u32 rangecount; | |
793 | struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT]; | |
794 | } __packed; | |
795 | ||
796 | /* The format must be the same as struct vmdata_gpa_direct */ | |
797 | struct vmbus_channel_packet_multipage_buffer { | |
798 | u16 type; | |
799 | u16 dataoffset8; | |
800 | u16 length8; | |
801 | u16 flags; | |
802 | u64 transactionid; | |
803 | u32 reserved; | |
804 | u32 rangecount; /* Always 1 in this case */ | |
805 | struct hv_multipage_buffer range; | |
806 | } __packed; | |
807 | ||
808 | ||
809 | extern int vmbus_open(struct vmbus_channel *channel, | |
810 | u32 send_ringbuffersize, | |
811 | u32 recv_ringbuffersize, | |
812 | void *userdata, | |
813 | u32 userdatalen, | |
814 | void(*onchannel_callback)(void *context), | |
815 | void *context); | |
816 | ||
817 | extern void vmbus_close(struct vmbus_channel *channel); | |
818 | ||
819 | extern int vmbus_sendpacket(struct vmbus_channel *channel, | |
011a7c3c | 820 | void *buffer, |
c35470b2 S |
821 | u32 bufferLen, |
822 | u64 requestid, | |
823 | enum vmbus_packet_type type, | |
824 | u32 flags); | |
825 | ||
826 | extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, | |
827 | struct hv_page_buffer pagebuffers[], | |
828 | u32 pagecount, | |
829 | void *buffer, | |
830 | u32 bufferlen, | |
831 | u64 requestid); | |
832 | ||
833 | extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, | |
834 | struct hv_multipage_buffer *mpb, | |
835 | void *buffer, | |
836 | u32 bufferlen, | |
837 | u64 requestid); | |
838 | ||
839 | extern int vmbus_establish_gpadl(struct vmbus_channel *channel, | |
840 | void *kbuffer, | |
841 | u32 size, | |
842 | u32 *gpadl_handle); | |
843 | ||
844 | extern int vmbus_teardown_gpadl(struct vmbus_channel *channel, | |
845 | u32 gpadl_handle); | |
846 | ||
847 | extern int vmbus_recvpacket(struct vmbus_channel *channel, | |
848 | void *buffer, | |
849 | u32 bufferlen, | |
850 | u32 *buffer_actual_len, | |
851 | u64 *requestid); | |
852 | ||
853 | extern int vmbus_recvpacket_raw(struct vmbus_channel *channel, | |
854 | void *buffer, | |
855 | u32 bufferlen, | |
856 | u32 *buffer_actual_len, | |
857 | u64 *requestid); | |
858 | ||
c35470b2 | 859 | |
c35470b2 S |
860 | extern void vmbus_ontimer(unsigned long data); |
861 | ||
35ea09c3 S |
862 | /* Base driver object */ |
863 | struct hv_driver { | |
864 | const char *name; | |
865 | ||
866 | /* the device type supported by this driver */ | |
358d2ee2 | 867 | uuid_le dev_type; |
2e2c1d17 | 868 | const struct hv_vmbus_device_id *id_table; |
35ea09c3 S |
869 | |
870 | struct device_driver driver; | |
871 | ||
84946899 | 872 | int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *); |
35ea09c3 S |
873 | int (*remove)(struct hv_device *); |
874 | void (*shutdown)(struct hv_device *); | |
875 | ||
876 | }; | |
877 | ||
878 | /* Base device object */ | |
879 | struct hv_device { | |
880 | /* the device type id of this device */ | |
358d2ee2 | 881 | uuid_le dev_type; |
35ea09c3 S |
882 | |
883 | /* the device instance id of this device */ | |
358d2ee2 | 884 | uuid_le dev_instance; |
35ea09c3 S |
885 | |
886 | struct device device; | |
887 | ||
888 | struct vmbus_channel *channel; | |
35ea09c3 S |
889 | }; |
890 | ||
27b5b3ca S |
891 | |
892 | static inline struct hv_device *device_to_hv_device(struct device *d) | |
893 | { | |
894 | return container_of(d, struct hv_device, device); | |
895 | } | |
896 | ||
897 | static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d) | |
898 | { | |
899 | return container_of(d, struct hv_driver, driver); | |
900 | } | |
901 | ||
ab101e86 S |
902 | static inline void hv_set_drvdata(struct hv_device *dev, void *data) |
903 | { | |
904 | dev_set_drvdata(&dev->device, data); | |
905 | } | |
906 | ||
907 | static inline void *hv_get_drvdata(struct hv_device *dev) | |
908 | { | |
909 | return dev_get_drvdata(&dev->device); | |
910 | } | |
27b5b3ca S |
911 | |
912 | /* Vmbus interface */ | |
768fa219 GKH |
913 | #define vmbus_driver_register(driver) \ |
914 | __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) | |
915 | int __must_check __vmbus_driver_register(struct hv_driver *hv_driver, | |
916 | struct module *owner, | |
917 | const char *mod_name); | |
918 | void vmbus_driver_unregister(struct hv_driver *hv_driver); | |
27b5b3ca | 919 | |
c45cf2d4 GKH |
920 | /** |
921 | * VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device | |
922 | * | |
923 | * This macro is used to create a struct hv_vmbus_device_id that matches a | |
924 | * specific device. | |
925 | */ | |
926 | #define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \ | |
927 | g8, g9, ga, gb, gc, gd, ge, gf) \ | |
928 | .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \ | |
929 | g8, g9, ga, gb, gc, gd, ge, gf }, | |
930 | ||
7fb96565 S |
931 | /* |
932 | * GUID definitions of various offer types - services offered to the guest. | |
933 | */ | |
934 | ||
935 | /* | |
936 | * Network GUID | |
937 | * {f8615163-df3e-46c5-913f-f2d2f965ed0e} | |
938 | */ | |
939 | #define HV_NIC_GUID \ | |
940 | .guid = { \ | |
941 | 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, \ | |
942 | 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e \ | |
943 | } | |
944 | ||
945 | /* | |
946 | * IDE GUID | |
947 | * {32412632-86cb-44a2-9b5c-50d1417354f5} | |
948 | */ | |
949 | #define HV_IDE_GUID \ | |
950 | .guid = { \ | |
951 | 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \ | |
952 | 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 \ | |
953 | } | |
954 | ||
955 | /* | |
956 | * SCSI GUID | |
957 | * {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} | |
958 | */ | |
959 | #define HV_SCSI_GUID \ | |
960 | .guid = { \ | |
961 | 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \ | |
962 | 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f \ | |
963 | } | |
964 | ||
965 | /* | |
966 | * Shutdown GUID | |
967 | * {0e0b6031-5213-4934-818b-38d90ced39db} | |
968 | */ | |
969 | #define HV_SHUTDOWN_GUID \ | |
970 | .guid = { \ | |
971 | 0x31, 0x60, 0x0b, 0x0e, 0x13, 0x52, 0x34, 0x49, \ | |
972 | 0x81, 0x8b, 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb \ | |
973 | } | |
974 | ||
975 | /* | |
976 | * Time Synch GUID | |
977 | * {9527E630-D0AE-497b-ADCE-E80AB0175CAF} | |
978 | */ | |
979 | #define HV_TS_GUID \ | |
980 | .guid = { \ | |
981 | 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, \ | |
982 | 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf \ | |
983 | } | |
984 | ||
985 | /* | |
986 | * Heartbeat GUID | |
987 | * {57164f39-9115-4e78-ab55-382f3bd5422d} | |
988 | */ | |
989 | #define HV_HEART_BEAT_GUID \ | |
990 | .guid = { \ | |
991 | 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, \ | |
992 | 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d \ | |
993 | } | |
994 | ||
995 | /* | |
996 | * KVP GUID | |
997 | * {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6} | |
998 | */ | |
999 | #define HV_KVP_GUID \ | |
1000 | .guid = { \ | |
1001 | 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, \ | |
1002 | 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 \ | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * Dynamic memory GUID | |
1007 | * {525074dc-8985-46e2-8057-a307dc18a502} | |
1008 | */ | |
1009 | #define HV_DM_GUID \ | |
1010 | .guid = { \ | |
1011 | 0xdc, 0x74, 0x50, 0X52, 0x85, 0x89, 0xe2, 0x46, \ | |
1012 | 0x80, 0x57, 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02 \ | |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * Mouse GUID | |
1017 | * {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a} | |
1018 | */ | |
1019 | #define HV_MOUSE_GUID \ | |
1020 | .guid = { \ | |
1021 | 0x9e, 0xb6, 0xa8, 0xcf, 0x4a, 0x5b, 0xc0, 0x4c, \ | |
1022 | 0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \ | |
1023 | } | |
1024 | ||
96dd86fa S |
1025 | /* |
1026 | * VSS (Backup/Restore) GUID | |
1027 | */ | |
1028 | #define HV_VSS_GUID \ | |
1029 | .guid = { \ | |
1030 | 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \ | |
1031 | 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \ | |
1032 | } | |
68a2d20b HZ |
1033 | /* |
1034 | * Synthetic Video GUID | |
1035 | * {DA0A7802-E377-4aac-8E77-0558EB1073F8} | |
1036 | */ | |
1037 | #define HV_SYNTHVID_GUID \ | |
1038 | .guid = { \ | |
1039 | 0x02, 0x78, 0x0a, 0xda, 0x77, 0xe3, 0xac, 0x4a, \ | |
1040 | 0x8e, 0x77, 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8 \ | |
1041 | } | |
1042 | ||
98b80d89 S |
1043 | /* |
1044 | * Synthetic FC GUID | |
1045 | * {2f9bcc4a-0069-4af3-b76b-6fd0be528cda} | |
1046 | */ | |
1047 | #define HV_SYNTHFC_GUID \ | |
1048 | .guid = { \ | |
1049 | 0x4A, 0xCC, 0x9B, 0x2F, 0x69, 0x00, 0xF3, 0x4A, \ | |
1050 | 0xB7, 0x6B, 0x6F, 0xD0, 0xBE, 0x52, 0x8C, 0xDA \ | |
1051 | } | |
1052 | ||
01325476 S |
1053 | /* |
1054 | * Guest File Copy Service | |
1055 | * {34D14BE3-DEE4-41c8-9AE7-6B174977C192} | |
1056 | */ | |
1057 | ||
1058 | #define HV_FCOPY_GUID \ | |
1059 | .guid = { \ | |
1060 | 0xE3, 0x4B, 0xD1, 0x34, 0xE4, 0xDE, 0xC8, 0x41, \ | |
1061 | 0x9A, 0xE7, 0x6B, 0x17, 0x49, 0x77, 0xC1, 0x92 \ | |
1062 | } | |
1063 | ||
b189702d S |
1064 | /* |
1065 | * Common header for Hyper-V ICs | |
1066 | */ | |
1067 | ||
1068 | #define ICMSGTYPE_NEGOTIATE 0 | |
1069 | #define ICMSGTYPE_HEARTBEAT 1 | |
1070 | #define ICMSGTYPE_KVPEXCHANGE 2 | |
1071 | #define ICMSGTYPE_SHUTDOWN 3 | |
1072 | #define ICMSGTYPE_TIMESYNC 4 | |
1073 | #define ICMSGTYPE_VSS 5 | |
1074 | ||
1075 | #define ICMSGHDRFLAG_TRANSACTION 1 | |
1076 | #define ICMSGHDRFLAG_REQUEST 2 | |
1077 | #define ICMSGHDRFLAG_RESPONSE 4 | |
1078 | ||
b189702d | 1079 | |
a29b643c S |
1080 | /* |
1081 | * While we want to handle util services as regular devices, | |
1082 | * there is only one instance of each of these services; so | |
1083 | * we statically allocate the service specific state. | |
1084 | */ | |
1085 | ||
1086 | struct hv_util_service { | |
1087 | u8 *recv_buffer; | |
1088 | void (*util_cb)(void *); | |
1089 | int (*util_init)(struct hv_util_service *); | |
1090 | void (*util_deinit)(void); | |
1091 | }; | |
1092 | ||
b189702d S |
1093 | struct vmbuspipe_hdr { |
1094 | u32 flags; | |
1095 | u32 msgsize; | |
1096 | } __packed; | |
1097 | ||
1098 | struct ic_version { | |
1099 | u16 major; | |
1100 | u16 minor; | |
1101 | } __packed; | |
1102 | ||
1103 | struct icmsg_hdr { | |
1104 | struct ic_version icverframe; | |
1105 | u16 icmsgtype; | |
1106 | struct ic_version icvermsg; | |
1107 | u16 icmsgsize; | |
1108 | u32 status; | |
1109 | u8 ictransaction_id; | |
1110 | u8 icflags; | |
1111 | u8 reserved[2]; | |
1112 | } __packed; | |
1113 | ||
1114 | struct icmsg_negotiate { | |
1115 | u16 icframe_vercnt; | |
1116 | u16 icmsg_vercnt; | |
1117 | u32 reserved; | |
1118 | struct ic_version icversion_data[1]; /* any size array */ | |
1119 | } __packed; | |
1120 | ||
1121 | struct shutdown_msg_data { | |
1122 | u32 reason_code; | |
1123 | u32 timeout_seconds; | |
1124 | u32 flags; | |
1125 | u8 display_message[2048]; | |
1126 | } __packed; | |
1127 | ||
1128 | struct heartbeat_msg_data { | |
1129 | u64 seq_num; | |
1130 | u32 reserved[8]; | |
1131 | } __packed; | |
1132 | ||
1133 | /* Time Sync IC defs */ | |
1134 | #define ICTIMESYNCFLAG_PROBE 0 | |
1135 | #define ICTIMESYNCFLAG_SYNC 1 | |
1136 | #define ICTIMESYNCFLAG_SAMPLE 2 | |
1137 | ||
1138 | #ifdef __x86_64__ | |
1139 | #define WLTIMEDELTA 116444736000000000L /* in 100ns unit */ | |
1140 | #else | |
1141 | #define WLTIMEDELTA 116444736000000000LL | |
1142 | #endif | |
1143 | ||
1144 | struct ictimesync_data { | |
1145 | u64 parenttime; | |
1146 | u64 childtime; | |
1147 | u64 roundtriptime; | |
1148 | u8 flags; | |
1149 | } __packed; | |
1150 | ||
b189702d S |
1151 | struct hyperv_service_callback { |
1152 | u8 msg_type; | |
1153 | char *log_msg; | |
358d2ee2 | 1154 | uuid_le data; |
b189702d S |
1155 | struct vmbus_channel *channel; |
1156 | void (*callback) (void *context); | |
1157 | }; | |
1158 | ||
c836d0ab | 1159 | #define MAX_SRV_VER 0x7ffffff |
6741335b | 1160 | extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *, |
c836d0ab S |
1161 | struct icmsg_negotiate *, u8 *, int, |
1162 | int); | |
b189702d | 1163 | |
2939437c S |
1164 | int hv_kvp_init(struct hv_util_service *); |
1165 | void hv_kvp_deinit(void); | |
1166 | void hv_kvp_onchannelcallback(void *); | |
1167 | ||
96dd86fa S |
1168 | int hv_vss_init(struct hv_util_service *); |
1169 | void hv_vss_deinit(void); | |
1170 | void hv_vss_onchannelcallback(void *); | |
1171 | ||
90eedf0c | 1172 | extern struct resource hyperv_mmio; |
90f34535 | 1173 | |
37f7278b S |
1174 | /* |
1175 | * Negotiated version with the Host. | |
1176 | */ | |
1177 | ||
1178 | extern __u32 vmbus_proto_version; | |
1179 | ||
3f335ea2 | 1180 | #endif /* _HYPERV_H */ |