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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 | ||
28 | struct hv_guid { | |
29 | unsigned char data[16]; | |
30 | }; | |
31 | ||
a363bf7b S |
32 | #define MAX_PAGE_BUFFER_COUNT 16 |
33 | #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ | |
34 | ||
35 | #pragma pack(push, 1) | |
36 | ||
37 | /* Single-page buffer */ | |
38 | struct hv_page_buffer { | |
39 | u32 len; | |
40 | u32 offset; | |
41 | u64 pfn; | |
42 | }; | |
43 | ||
44 | /* Multiple-page buffer */ | |
45 | struct hv_multipage_buffer { | |
46 | /* Length and Offset determines the # of pfns in the array */ | |
47 | u32 len; | |
48 | u32 offset; | |
49 | u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; | |
50 | }; | |
51 | ||
52 | /* 0x18 includes the proprietary packet header */ | |
53 | #define MAX_PAGE_BUFFER_PACKET (0x18 + \ | |
54 | (sizeof(struct hv_page_buffer) * \ | |
55 | MAX_PAGE_BUFFER_COUNT)) | |
56 | #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ | |
57 | sizeof(struct hv_multipage_buffer)) | |
58 | ||
59 | ||
60 | #pragma pack(pop) | |
61 | ||
7effffb7 S |
62 | struct hv_ring_buffer { |
63 | /* Offset in bytes from the start of ring data below */ | |
64 | u32 write_index; | |
65 | ||
66 | /* Offset in bytes from the start of ring data below */ | |
67 | u32 read_index; | |
68 | ||
69 | u32 interrupt_mask; | |
70 | ||
71 | /* Pad it to PAGE_SIZE so that data starts on page boundary */ | |
72 | u8 reserved[4084]; | |
73 | ||
74 | /* NOTE: | |
75 | * The interrupt_mask field is used only for channels but since our | |
76 | * vmbus connection also uses this data structure and its data starts | |
77 | * here, we commented out this field. | |
78 | */ | |
79 | ||
80 | /* | |
81 | * Ring data starts here + RingDataStartOffset | |
82 | * !!! DO NOT place any fields below this !!! | |
83 | */ | |
84 | u8 buffer[0]; | |
85 | } __packed; | |
86 | ||
87 | struct hv_ring_buffer_info { | |
88 | struct hv_ring_buffer *ring_buffer; | |
89 | u32 ring_size; /* Include the shared header */ | |
90 | spinlock_t ring_lock; | |
91 | ||
92 | u32 ring_datasize; /* < ring_size */ | |
93 | u32 ring_data_startoffset; | |
94 | }; | |
95 | ||
96 | struct hv_ring_buffer_debug_info { | |
97 | u32 current_interrupt_mask; | |
98 | u32 current_read_index; | |
99 | u32 current_write_index; | |
100 | u32 bytes_avail_toread; | |
101 | u32 bytes_avail_towrite; | |
102 | }; | |
3f335ea2 | 103 | |
f7c6dfda S |
104 | /* |
105 | * We use the same version numbering for all Hyper-V modules. | |
106 | * | |
107 | * Definition of versioning is as follows; | |
108 | * | |
109 | * Major Number Changes for these scenarios; | |
110 | * 1. When a new version of Windows Hyper-V | |
111 | * is released. | |
112 | * 2. A Major change has occurred in the | |
113 | * Linux IC's. | |
114 | * (For example the merge for the first time | |
115 | * into the kernel) Every time the Major Number | |
116 | * changes, the Revision number is reset to 0. | |
117 | * Minor Number Changes when new functionality is added | |
118 | * to the Linux IC's that is not a bug fix. | |
119 | * | |
120 | * 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync | |
121 | */ | |
122 | #define HV_DRV_VERSION "3.1" | |
123 | ||
124 | ||
517d8dc6 S |
125 | /* |
126 | * A revision number of vmbus that is used for ensuring both ends on a | |
127 | * partition are using compatible versions. | |
128 | */ | |
129 | #define VMBUS_REVISION_NUMBER 13 | |
130 | ||
131 | /* Make maximum size of pipe payload of 16K */ | |
132 | #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) | |
133 | ||
134 | /* Define PipeMode values. */ | |
135 | #define VMBUS_PIPE_TYPE_BYTE 0x00000000 | |
136 | #define VMBUS_PIPE_TYPE_MESSAGE 0x00000004 | |
137 | ||
138 | /* The size of the user defined data buffer for non-pipe offers. */ | |
139 | #define MAX_USER_DEFINED_BYTES 120 | |
140 | ||
141 | /* The size of the user defined data buffer for pipe offers. */ | |
142 | #define MAX_PIPE_USER_DEFINED_BYTES 116 | |
143 | ||
144 | /* | |
145 | * At the center of the Channel Management library is the Channel Offer. This | |
146 | * struct contains the fundamental information about an offer. | |
147 | */ | |
148 | struct vmbus_channel_offer { | |
149 | struct hv_guid if_type; | |
150 | struct hv_guid if_instance; | |
151 | u64 int_latency; /* in 100ns units */ | |
152 | u32 if_revision; | |
153 | u32 server_ctx_size; /* in bytes */ | |
154 | u16 chn_flags; | |
155 | u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ | |
156 | ||
157 | union { | |
158 | /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */ | |
159 | struct { | |
160 | unsigned char user_def[MAX_USER_DEFINED_BYTES]; | |
161 | } std; | |
162 | ||
163 | /* | |
164 | * Pipes: | |
165 | * The following sructure is an integrated pipe protocol, which | |
166 | * is implemented on top of standard user-defined data. Pipe | |
167 | * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own | |
168 | * use. | |
169 | */ | |
170 | struct { | |
171 | u32 pipe_mode; | |
172 | unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; | |
173 | } pipe; | |
174 | } u; | |
175 | u32 padding; | |
176 | } __packed; | |
177 | ||
178 | /* Server Flags */ | |
179 | #define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1 | |
180 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2 | |
181 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4 | |
182 | #define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10 | |
183 | #define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100 | |
184 | #define VMBUS_CHANNEL_PARENT_OFFER 0x200 | |
185 | #define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400 | |
186 | ||
50ed40e0 S |
187 | struct vmpacket_descriptor { |
188 | u16 type; | |
189 | u16 offset8; | |
190 | u16 len8; | |
191 | u16 flags; | |
192 | u64 trans_id; | |
193 | } __packed; | |
194 | ||
195 | struct vmpacket_header { | |
196 | u32 prev_pkt_start_offset; | |
197 | struct vmpacket_descriptor descriptor; | |
198 | } __packed; | |
199 | ||
200 | struct vmtransfer_page_range { | |
201 | u32 byte_count; | |
202 | u32 byte_offset; | |
203 | } __packed; | |
204 | ||
205 | struct vmtransfer_page_packet_header { | |
206 | struct vmpacket_descriptor d; | |
207 | u16 xfer_pageset_id; | |
208 | bool sender_owns_set; | |
209 | u8 reserved; | |
210 | u32 range_cnt; | |
211 | struct vmtransfer_page_range ranges[1]; | |
212 | } __packed; | |
213 | ||
214 | struct vmgpadl_packet_header { | |
215 | struct vmpacket_descriptor d; | |
216 | u32 gpadl; | |
217 | u32 reserved; | |
218 | } __packed; | |
219 | ||
220 | struct vmadd_remove_transfer_page_set { | |
221 | struct vmpacket_descriptor d; | |
222 | u32 gpadl; | |
223 | u16 xfer_pageset_id; | |
224 | u16 reserved; | |
225 | } __packed; | |
226 | ||
227 | /* | |
228 | * This structure defines a range in guest physical space that can be made to | |
229 | * look virtually contiguous. | |
230 | */ | |
231 | struct gpa_range { | |
232 | u32 byte_count; | |
233 | u32 byte_offset; | |
234 | u64 pfn_array[0]; | |
235 | }; | |
236 | ||
237 | /* | |
238 | * This is the format for an Establish Gpadl packet, which contains a handle by | |
239 | * which this GPADL will be known and a set of GPA ranges associated with it. | |
240 | * This can be converted to a MDL by the guest OS. If there are multiple GPA | |
241 | * ranges, then the resulting MDL will be "chained," representing multiple VA | |
242 | * ranges. | |
243 | */ | |
244 | struct vmestablish_gpadl { | |
245 | struct vmpacket_descriptor d; | |
246 | u32 gpadl; | |
247 | u32 range_cnt; | |
248 | struct gpa_range range[1]; | |
249 | } __packed; | |
250 | ||
251 | /* | |
252 | * This is the format for a Teardown Gpadl packet, which indicates that the | |
253 | * GPADL handle in the Establish Gpadl packet will never be referenced again. | |
254 | */ | |
255 | struct vmteardown_gpadl { | |
256 | struct vmpacket_descriptor d; | |
257 | u32 gpadl; | |
258 | u32 reserved; /* for alignment to a 8-byte boundary */ | |
259 | } __packed; | |
260 | ||
261 | /* | |
262 | * This is the format for a GPA-Direct packet, which contains a set of GPA | |
263 | * ranges, in addition to commands and/or data. | |
264 | */ | |
265 | struct vmdata_gpa_direct { | |
266 | struct vmpacket_descriptor d; | |
267 | u32 reserved; | |
268 | u32 range_cnt; | |
269 | struct gpa_range range[1]; | |
270 | } __packed; | |
271 | ||
272 | /* This is the format for a Additional Data Packet. */ | |
273 | struct vmadditional_data { | |
274 | struct vmpacket_descriptor d; | |
275 | u64 total_bytes; | |
276 | u32 offset; | |
277 | u32 byte_cnt; | |
278 | unsigned char data[1]; | |
279 | } __packed; | |
280 | ||
281 | union vmpacket_largest_possible_header { | |
282 | struct vmpacket_descriptor simple_hdr; | |
283 | struct vmtransfer_page_packet_header xfer_page_hdr; | |
284 | struct vmgpadl_packet_header gpadl_hdr; | |
285 | struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr; | |
286 | struct vmestablish_gpadl establish_gpadl_hdr; | |
287 | struct vmteardown_gpadl teardown_gpadl_hdr; | |
288 | struct vmdata_gpa_direct data_gpa_direct_hdr; | |
289 | }; | |
290 | ||
291 | #define VMPACKET_DATA_START_ADDRESS(__packet) \ | |
292 | (void *)(((unsigned char *)__packet) + \ | |
293 | ((struct vmpacket_descriptor)__packet)->offset8 * 8) | |
294 | ||
295 | #define VMPACKET_DATA_LENGTH(__packet) \ | |
296 | ((((struct vmpacket_descriptor)__packet)->len8 - \ | |
297 | ((struct vmpacket_descriptor)__packet)->offset8) * 8) | |
298 | ||
299 | #define VMPACKET_TRANSFER_MODE(__packet) \ | |
300 | (((struct IMPACT)__packet)->type) | |
301 | ||
302 | enum vmbus_packet_type { | |
303 | VM_PKT_INVALID = 0x0, | |
304 | VM_PKT_SYNCH = 0x1, | |
305 | VM_PKT_ADD_XFER_PAGESET = 0x2, | |
306 | VM_PKT_RM_XFER_PAGESET = 0x3, | |
307 | VM_PKT_ESTABLISH_GPADL = 0x4, | |
308 | VM_PKT_TEARDOWN_GPADL = 0x5, | |
309 | VM_PKT_DATA_INBAND = 0x6, | |
310 | VM_PKT_DATA_USING_XFER_PAGES = 0x7, | |
311 | VM_PKT_DATA_USING_GPADL = 0x8, | |
312 | VM_PKT_DATA_USING_GPA_DIRECT = 0x9, | |
313 | VM_PKT_CANCEL_REQUEST = 0xa, | |
314 | VM_PKT_COMP = 0xb, | |
315 | VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc, | |
316 | VM_PKT_ADDITIONAL_DATA = 0xd | |
317 | }; | |
318 | ||
319 | #define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 | |
517d8dc6 | 320 | |
b56dda06 S |
321 | |
322 | #include <linux/list.h> | |
323 | #include <linux/timer.h> | |
324 | #include <linux/workqueue.h> | |
325 | #include <linux/completion.h> | |
326 | #include "hyperv.h" | |
327 | ||
328 | /* Version 1 messages */ | |
329 | enum vmbus_channel_message_type { | |
330 | CHANNELMSG_INVALID = 0, | |
331 | CHANNELMSG_OFFERCHANNEL = 1, | |
332 | CHANNELMSG_RESCIND_CHANNELOFFER = 2, | |
333 | CHANNELMSG_REQUESTOFFERS = 3, | |
334 | CHANNELMSG_ALLOFFERS_DELIVERED = 4, | |
335 | CHANNELMSG_OPENCHANNEL = 5, | |
336 | CHANNELMSG_OPENCHANNEL_RESULT = 6, | |
337 | CHANNELMSG_CLOSECHANNEL = 7, | |
338 | CHANNELMSG_GPADL_HEADER = 8, | |
339 | CHANNELMSG_GPADL_BODY = 9, | |
340 | CHANNELMSG_GPADL_CREATED = 10, | |
341 | CHANNELMSG_GPADL_TEARDOWN = 11, | |
342 | CHANNELMSG_GPADL_TORNDOWN = 12, | |
343 | CHANNELMSG_RELID_RELEASED = 13, | |
344 | CHANNELMSG_INITIATE_CONTACT = 14, | |
345 | CHANNELMSG_VERSION_RESPONSE = 15, | |
346 | CHANNELMSG_UNLOAD = 16, | |
347 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
348 | CHANNELMSG_VIEWRANGE_ADD = 17, | |
349 | CHANNELMSG_VIEWRANGE_REMOVE = 18, | |
350 | #endif | |
351 | CHANNELMSG_COUNT | |
352 | }; | |
353 | ||
354 | struct vmbus_channel_message_header { | |
355 | enum vmbus_channel_message_type msgtype; | |
356 | u32 padding; | |
357 | } __packed; | |
358 | ||
359 | /* Query VMBus Version parameters */ | |
360 | struct vmbus_channel_query_vmbus_version { | |
361 | struct vmbus_channel_message_header header; | |
362 | u32 version; | |
363 | } __packed; | |
364 | ||
365 | /* VMBus Version Supported parameters */ | |
366 | struct vmbus_channel_version_supported { | |
367 | struct vmbus_channel_message_header header; | |
368 | bool version_supported; | |
369 | } __packed; | |
370 | ||
371 | /* Offer Channel parameters */ | |
372 | struct vmbus_channel_offer_channel { | |
373 | struct vmbus_channel_message_header header; | |
374 | struct vmbus_channel_offer offer; | |
375 | u32 child_relid; | |
376 | u8 monitorid; | |
377 | bool monitor_allocated; | |
378 | } __packed; | |
379 | ||
380 | /* Rescind Offer parameters */ | |
381 | struct vmbus_channel_rescind_offer { | |
382 | struct vmbus_channel_message_header header; | |
383 | u32 child_relid; | |
384 | } __packed; | |
385 | ||
386 | /* | |
387 | * Request Offer -- no parameters, SynIC message contains the partition ID | |
388 | * Set Snoop -- no parameters, SynIC message contains the partition ID | |
389 | * Clear Snoop -- no parameters, SynIC message contains the partition ID | |
390 | * All Offers Delivered -- no parameters, SynIC message contains the partition | |
391 | * ID | |
392 | * Flush Client -- no parameters, SynIC message contains the partition ID | |
393 | */ | |
394 | ||
395 | /* Open Channel parameters */ | |
396 | struct vmbus_channel_open_channel { | |
397 | struct vmbus_channel_message_header header; | |
398 | ||
399 | /* Identifies the specific VMBus channel that is being opened. */ | |
400 | u32 child_relid; | |
401 | ||
402 | /* ID making a particular open request at a channel offer unique. */ | |
403 | u32 openid; | |
404 | ||
405 | /* GPADL for the channel's ring buffer. */ | |
406 | u32 ringbuffer_gpadlhandle; | |
407 | ||
408 | /* GPADL for the channel's server context save area. */ | |
409 | u32 server_contextarea_gpadlhandle; | |
410 | ||
411 | /* | |
412 | * The upstream ring buffer begins at offset zero in the memory | |
413 | * described by RingBufferGpadlHandle. The downstream ring buffer | |
414 | * follows it at this offset (in pages). | |
415 | */ | |
416 | u32 downstream_ringbuffer_pageoffset; | |
417 | ||
418 | /* User-specific data to be passed along to the server endpoint. */ | |
419 | unsigned char userdata[MAX_USER_DEFINED_BYTES]; | |
420 | } __packed; | |
421 | ||
422 | /* Open Channel Result parameters */ | |
423 | struct vmbus_channel_open_result { | |
424 | struct vmbus_channel_message_header header; | |
425 | u32 child_relid; | |
426 | u32 openid; | |
427 | u32 status; | |
428 | } __packed; | |
429 | ||
430 | /* Close channel parameters; */ | |
431 | struct vmbus_channel_close_channel { | |
432 | struct vmbus_channel_message_header header; | |
433 | u32 child_relid; | |
434 | } __packed; | |
435 | ||
436 | /* Channel Message GPADL */ | |
437 | #define GPADL_TYPE_RING_BUFFER 1 | |
438 | #define GPADL_TYPE_SERVER_SAVE_AREA 2 | |
439 | #define GPADL_TYPE_TRANSACTION 8 | |
440 | ||
441 | /* | |
442 | * The number of PFNs in a GPADL message is defined by the number of | |
443 | * pages that would be spanned by ByteCount and ByteOffset. If the | |
444 | * implied number of PFNs won't fit in this packet, there will be a | |
445 | * follow-up packet that contains more. | |
446 | */ | |
447 | struct vmbus_channel_gpadl_header { | |
448 | struct vmbus_channel_message_header header; | |
449 | u32 child_relid; | |
450 | u32 gpadl; | |
451 | u16 range_buflen; | |
452 | u16 rangecount; | |
453 | struct gpa_range range[0]; | |
454 | } __packed; | |
455 | ||
456 | /* This is the followup packet that contains more PFNs. */ | |
457 | struct vmbus_channel_gpadl_body { | |
458 | struct vmbus_channel_message_header header; | |
459 | u32 msgnumber; | |
460 | u32 gpadl; | |
461 | u64 pfn[0]; | |
462 | } __packed; | |
463 | ||
464 | struct vmbus_channel_gpadl_created { | |
465 | struct vmbus_channel_message_header header; | |
466 | u32 child_relid; | |
467 | u32 gpadl; | |
468 | u32 creation_status; | |
469 | } __packed; | |
470 | ||
471 | struct vmbus_channel_gpadl_teardown { | |
472 | struct vmbus_channel_message_header header; | |
473 | u32 child_relid; | |
474 | u32 gpadl; | |
475 | } __packed; | |
476 | ||
477 | struct vmbus_channel_gpadl_torndown { | |
478 | struct vmbus_channel_message_header header; | |
479 | u32 gpadl; | |
480 | } __packed; | |
481 | ||
482 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
483 | struct vmbus_channel_view_range_add { | |
484 | struct vmbus_channel_message_header header; | |
485 | PHYSICAL_ADDRESS viewrange_base; | |
486 | u64 viewrange_length; | |
487 | u32 child_relid; | |
488 | } __packed; | |
489 | ||
490 | struct vmbus_channel_view_range_remove { | |
491 | struct vmbus_channel_message_header header; | |
492 | PHYSICAL_ADDRESS viewrange_base; | |
493 | u32 child_relid; | |
494 | } __packed; | |
495 | #endif | |
496 | ||
497 | struct vmbus_channel_relid_released { | |
498 | struct vmbus_channel_message_header header; | |
499 | u32 child_relid; | |
500 | } __packed; | |
501 | ||
502 | struct vmbus_channel_initiate_contact { | |
503 | struct vmbus_channel_message_header header; | |
504 | u32 vmbus_version_requested; | |
505 | u32 padding2; | |
506 | u64 interrupt_page; | |
507 | u64 monitor_page1; | |
508 | u64 monitor_page2; | |
509 | } __packed; | |
510 | ||
511 | struct vmbus_channel_version_response { | |
512 | struct vmbus_channel_message_header header; | |
513 | bool version_supported; | |
514 | } __packed; | |
515 | ||
516 | enum vmbus_channel_state { | |
517 | CHANNEL_OFFER_STATE, | |
518 | CHANNEL_OPENING_STATE, | |
519 | CHANNEL_OPEN_STATE, | |
520 | }; | |
521 | ||
522 | struct vmbus_channel { | |
523 | struct list_head listentry; | |
524 | ||
525 | struct hv_device *device_obj; | |
526 | ||
527 | struct timer_list poll_timer; /* SA-111 workaround */ | |
528 | struct work_struct work; | |
529 | ||
530 | enum vmbus_channel_state state; | |
531 | ||
532 | struct vmbus_channel_offer_channel offermsg; | |
533 | /* | |
534 | * These are based on the OfferMsg.MonitorId. | |
535 | * Save it here for easy access. | |
536 | */ | |
537 | u8 monitor_grp; | |
538 | u8 monitor_bit; | |
539 | ||
540 | u32 ringbuffer_gpadlhandle; | |
541 | ||
542 | /* Allocated memory for ring buffer */ | |
543 | void *ringbuffer_pages; | |
544 | u32 ringbuffer_pagecount; | |
545 | struct hv_ring_buffer_info outbound; /* send to parent */ | |
546 | struct hv_ring_buffer_info inbound; /* receive from parent */ | |
547 | spinlock_t inbound_lock; | |
548 | struct workqueue_struct *controlwq; | |
549 | ||
550 | /* Channel callback are invoked in this workqueue context */ | |
551 | /* HANDLE dataWorkQueue; */ | |
552 | ||
553 | void (*onchannel_callback)(void *context); | |
554 | void *channel_callback_context; | |
555 | }; | |
556 | ||
557 | struct vmbus_channel_debug_info { | |
558 | u32 relid; | |
559 | enum vmbus_channel_state state; | |
560 | struct hv_guid interfacetype; | |
561 | struct hv_guid interface_instance; | |
562 | u32 monitorid; | |
563 | u32 servermonitor_pending; | |
564 | u32 servermonitor_latency; | |
565 | u32 servermonitor_connectionid; | |
566 | u32 clientmonitor_pending; | |
567 | u32 clientmonitor_latency; | |
568 | u32 clientmonitor_connectionid; | |
569 | ||
570 | struct hv_ring_buffer_debug_info inbound; | |
571 | struct hv_ring_buffer_debug_info outbound; | |
572 | }; | |
573 | ||
574 | /* | |
575 | * Represents each channel msg on the vmbus connection This is a | |
576 | * variable-size data structure depending on the msg type itself | |
577 | */ | |
578 | struct vmbus_channel_msginfo { | |
579 | /* Bookkeeping stuff */ | |
580 | struct list_head msglistentry; | |
581 | ||
582 | /* So far, this is only used to handle gpadl body message */ | |
583 | struct list_head submsglist; | |
584 | ||
585 | /* Synchronize the request/response if needed */ | |
586 | struct completion waitevent; | |
587 | union { | |
588 | struct vmbus_channel_version_supported version_supported; | |
589 | struct vmbus_channel_open_result open_result; | |
590 | struct vmbus_channel_gpadl_torndown gpadl_torndown; | |
591 | struct vmbus_channel_gpadl_created gpadl_created; | |
592 | struct vmbus_channel_version_response version_response; | |
593 | } response; | |
594 | ||
595 | u32 msgsize; | |
596 | /* | |
597 | * The channel message that goes out on the "wire". | |
598 | * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header | |
599 | */ | |
600 | unsigned char msg[0]; | |
601 | }; | |
602 | ||
603 | ||
604 | void free_channel(struct vmbus_channel *channel); | |
605 | ||
606 | void vmbus_onmessage(void *context); | |
607 | ||
608 | int vmbus_request_offers(void); | |
609 | ||
c35470b2 S |
610 | /* The format must be the same as struct vmdata_gpa_direct */ |
611 | struct vmbus_channel_packet_page_buffer { | |
612 | u16 type; | |
613 | u16 dataoffset8; | |
614 | u16 length8; | |
615 | u16 flags; | |
616 | u64 transactionid; | |
617 | u32 reserved; | |
618 | u32 rangecount; | |
619 | struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT]; | |
620 | } __packed; | |
621 | ||
622 | /* The format must be the same as struct vmdata_gpa_direct */ | |
623 | struct vmbus_channel_packet_multipage_buffer { | |
624 | u16 type; | |
625 | u16 dataoffset8; | |
626 | u16 length8; | |
627 | u16 flags; | |
628 | u64 transactionid; | |
629 | u32 reserved; | |
630 | u32 rangecount; /* Always 1 in this case */ | |
631 | struct hv_multipage_buffer range; | |
632 | } __packed; | |
633 | ||
634 | ||
635 | extern int vmbus_open(struct vmbus_channel *channel, | |
636 | u32 send_ringbuffersize, | |
637 | u32 recv_ringbuffersize, | |
638 | void *userdata, | |
639 | u32 userdatalen, | |
640 | void(*onchannel_callback)(void *context), | |
641 | void *context); | |
642 | ||
643 | extern void vmbus_close(struct vmbus_channel *channel); | |
644 | ||
645 | extern int vmbus_sendpacket(struct vmbus_channel *channel, | |
646 | const void *buffer, | |
647 | u32 bufferLen, | |
648 | u64 requestid, | |
649 | enum vmbus_packet_type type, | |
650 | u32 flags); | |
651 | ||
652 | extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, | |
653 | struct hv_page_buffer pagebuffers[], | |
654 | u32 pagecount, | |
655 | void *buffer, | |
656 | u32 bufferlen, | |
657 | u64 requestid); | |
658 | ||
659 | extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, | |
660 | struct hv_multipage_buffer *mpb, | |
661 | void *buffer, | |
662 | u32 bufferlen, | |
663 | u64 requestid); | |
664 | ||
665 | extern int vmbus_establish_gpadl(struct vmbus_channel *channel, | |
666 | void *kbuffer, | |
667 | u32 size, | |
668 | u32 *gpadl_handle); | |
669 | ||
670 | extern int vmbus_teardown_gpadl(struct vmbus_channel *channel, | |
671 | u32 gpadl_handle); | |
672 | ||
673 | extern int vmbus_recvpacket(struct vmbus_channel *channel, | |
674 | void *buffer, | |
675 | u32 bufferlen, | |
676 | u32 *buffer_actual_len, | |
677 | u64 *requestid); | |
678 | ||
679 | extern int vmbus_recvpacket_raw(struct vmbus_channel *channel, | |
680 | void *buffer, | |
681 | u32 bufferlen, | |
682 | u32 *buffer_actual_len, | |
683 | u64 *requestid); | |
684 | ||
685 | extern void vmbus_onchannel_event(struct vmbus_channel *channel); | |
686 | ||
687 | extern void vmbus_get_debug_info(struct vmbus_channel *channel, | |
688 | struct vmbus_channel_debug_info *debug); | |
689 | ||
690 | extern void vmbus_ontimer(unsigned long data); | |
691 | ||
f63c9149 S |
692 | |
693 | #define LOWORD(dw) ((unsigned short)(dw)) | |
694 | #define HIWORD(dw) ((unsigned short)(((unsigned int) (dw) >> 16) & 0xFFFF)) | |
695 | ||
696 | ||
697 | #define VMBUS 0x0001 | |
698 | #define STORVSC 0x0002 | |
699 | #define NETVSC 0x0004 | |
700 | #define INPUTVSC 0x0008 | |
701 | #define BLKVSC 0x0010 | |
702 | #define VMBUS_DRV 0x0100 | |
703 | #define STORVSC_DRV 0x0200 | |
704 | #define NETVSC_DRV 0x0400 | |
705 | #define INPUTVSC_DRV 0x0800 | |
706 | #define BLKVSC_DRV 0x1000 | |
707 | ||
708 | #define ALL_MODULES (VMBUS |\ | |
709 | STORVSC |\ | |
710 | NETVSC |\ | |
711 | INPUTVSC |\ | |
712 | BLKVSC |\ | |
713 | VMBUS_DRV |\ | |
714 | STORVSC_DRV |\ | |
715 | NETVSC_DRV |\ | |
716 | INPUTVSC_DRV|\ | |
717 | BLKVSC_DRV) | |
718 | ||
719 | /* Logging Level */ | |
720 | #define ERROR_LVL 3 | |
721 | #define WARNING_LVL 4 | |
722 | #define INFO_LVL 6 | |
723 | #define DEBUG_LVL 7 | |
724 | #define DEBUG_LVL_ENTEREXIT 8 | |
725 | #define DEBUG_RING_LVL 9 | |
726 | ||
727 | extern unsigned int vmbus_loglevel; | |
728 | ||
729 | #define DPRINT(mod, lvl, fmt, args...) do {\ | |
730 | if ((mod & (HIWORD(vmbus_loglevel))) && \ | |
731 | (lvl <= LOWORD(vmbus_loglevel))) \ | |
732 | printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ | |
733 | } while (0) | |
734 | ||
735 | #define DPRINT_DBG(mod, fmt, args...) do {\ | |
736 | if ((mod & (HIWORD(vmbus_loglevel))) && \ | |
737 | (DEBUG_LVL <= LOWORD(vmbus_loglevel))) \ | |
738 | printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ | |
739 | } while (0) | |
740 | ||
741 | #define DPRINT_INFO(mod, fmt, args...) do {\ | |
742 | if ((mod & (HIWORD(vmbus_loglevel))) && \ | |
743 | (INFO_LVL <= LOWORD(vmbus_loglevel))) \ | |
744 | printk(KERN_INFO #mod": " fmt "\n", ## args);\ | |
745 | } while (0) | |
746 | ||
747 | #define DPRINT_WARN(mod, fmt, args...) do {\ | |
748 | if ((mod & (HIWORD(vmbus_loglevel))) && \ | |
749 | (WARNING_LVL <= LOWORD(vmbus_loglevel))) \ | |
750 | printk(KERN_WARNING #mod": WARNING! " fmt "\n", ## args);\ | |
751 | } while (0) | |
752 | ||
753 | #define DPRINT_ERR(mod, fmt, args...) do {\ | |
754 | if ((mod & (HIWORD(vmbus_loglevel))) && \ | |
755 | (ERROR_LVL <= LOWORD(vmbus_loglevel))) \ | |
756 | printk(KERN_ERR #mod": %s() ERROR!! " fmt "\n", \ | |
757 | __func__, ## args);\ | |
758 | } while (0) | |
759 | ||
35ea09c3 S |
760 | |
761 | ||
762 | #include <linux/device.h> | |
763 | #include <linux/workqueue.h> | |
764 | ||
765 | struct hv_driver; | |
766 | struct hv_device; | |
767 | ||
768 | struct hv_dev_port_info { | |
769 | u32 int_mask; | |
770 | u32 read_idx; | |
771 | u32 write_idx; | |
772 | u32 bytes_avail_toread; | |
773 | u32 bytes_avail_towrite; | |
774 | }; | |
775 | ||
776 | struct hv_device_info { | |
777 | u32 chn_id; | |
778 | u32 chn_state; | |
779 | struct hv_guid chn_type; | |
780 | struct hv_guid chn_instance; | |
781 | ||
782 | u32 monitor_id; | |
783 | u32 server_monitor_pending; | |
784 | u32 server_monitor_latency; | |
785 | u32 server_monitor_conn_id; | |
786 | u32 client_monitor_pending; | |
787 | u32 client_monitor_latency; | |
788 | u32 client_monitor_conn_id; | |
789 | ||
790 | struct hv_dev_port_info inbound; | |
791 | struct hv_dev_port_info outbound; | |
792 | }; | |
793 | ||
794 | /* Base driver object */ | |
795 | struct hv_driver { | |
796 | const char *name; | |
797 | ||
798 | /* the device type supported by this driver */ | |
799 | struct hv_guid dev_type; | |
800 | ||
801 | struct device_driver driver; | |
802 | ||
803 | int (*probe)(struct hv_device *); | |
804 | int (*remove)(struct hv_device *); | |
805 | void (*shutdown)(struct hv_device *); | |
806 | ||
807 | }; | |
808 | ||
809 | /* Base device object */ | |
810 | struct hv_device { | |
811 | /* the device type id of this device */ | |
812 | struct hv_guid dev_type; | |
813 | ||
814 | /* the device instance id of this device */ | |
815 | struct hv_guid dev_instance; | |
816 | ||
817 | struct device device; | |
818 | ||
819 | struct vmbus_channel *channel; | |
820 | ||
821 | /* Device extension; */ | |
822 | void *ext; | |
823 | }; | |
824 | ||
3f335ea2 | 825 | #endif /* _HYPERV_H */ |