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3e7ee490 HJ |
1 | /* |
2 | * | |
3 | * Copyright (c) 2009, 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 | * | |
22 | */ | |
23 | ||
24 | ||
09d50ff8 GKH |
25 | #include "include/osd.h" |
26 | #include "include/logging.h" | |
3e7ee490 HJ |
27 | |
28 | #include "VmbusPrivate.h" | |
29 | ||
30 | // | |
31 | // Defines | |
32 | // | |
33 | ||
34 | // | |
35 | // Data types | |
36 | // | |
37 | ||
38 | typedef void (*PFN_CHANNEL_MESSAGE_HANDLER)(VMBUS_CHANNEL_MESSAGE_HEADER* msg); | |
39 | ||
40 | typedef struct _VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY { | |
41 | VMBUS_CHANNEL_MESSAGE_TYPE messageType; | |
42 | PFN_CHANNEL_MESSAGE_HANDLER messageHandler; | |
43 | } VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY; | |
44 | ||
45 | // | |
46 | // Internal routines | |
47 | // | |
48 | ||
49 | static void | |
50 | VmbusChannelOnOffer( | |
51 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
52 | ); | |
53 | static void | |
54 | VmbusChannelOnOpenResult( | |
55 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
56 | ); | |
57 | ||
58 | static void | |
59 | VmbusChannelOnOfferRescind( | |
60 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
61 | ); | |
62 | ||
63 | static void | |
64 | VmbusChannelOnGpadlCreated( | |
65 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
66 | ); | |
67 | ||
68 | static void | |
69 | VmbusChannelOnGpadlTorndown( | |
70 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
71 | ); | |
72 | ||
73 | static void | |
74 | VmbusChannelOnOffersDelivered( | |
75 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
76 | ); | |
77 | ||
78 | static void | |
79 | VmbusChannelOnVersionResponse( | |
80 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
81 | ); | |
82 | ||
83 | static void | |
84 | VmbusChannelProcessOffer( | |
8282c400 | 85 | void * context |
3e7ee490 HJ |
86 | ); |
87 | ||
88 | static void | |
89 | VmbusChannelProcessRescindOffer( | |
8282c400 | 90 | void * context |
3e7ee490 HJ |
91 | ); |
92 | ||
93 | ||
94 | // | |
95 | // Globals | |
96 | // | |
97 | ||
98 | #define MAX_NUM_DEVICE_CLASSES_SUPPORTED 4 | |
99 | ||
100 | const GUID gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPORTED]= { | |
101 | //{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} | |
102 | {.Data = {0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f}},// Storage - SCSI | |
103 | //{F8615163-DF3E-46c5-913F-F2D2F965ED0E} | |
104 | {.Data = {0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E}}, // Network | |
105 | //{CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} | |
106 | {.Data = {0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c, 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A}}, // Input | |
107 | //{32412632-86cb-44a2-9b5c-50d1417354f5} | |
108 | {.Data = {0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5}}, // IDE | |
109 | ||
110 | }; | |
111 | ||
112 | // Channel message dispatch table | |
113 | VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY gChannelMessageTable[ChannelMessageCount]= { | |
114 | {ChannelMessageInvalid, NULL}, | |
115 | {ChannelMessageOfferChannel, VmbusChannelOnOffer}, | |
116 | {ChannelMessageRescindChannelOffer, VmbusChannelOnOfferRescind}, | |
117 | {ChannelMessageRequestOffers, NULL}, | |
118 | {ChannelMessageAllOffersDelivered, VmbusChannelOnOffersDelivered}, | |
119 | {ChannelMessageOpenChannel, NULL}, | |
120 | {ChannelMessageOpenChannelResult, VmbusChannelOnOpenResult}, | |
121 | {ChannelMessageCloseChannel, NULL}, | |
122 | {ChannelMessageGpadlHeader, NULL}, | |
123 | {ChannelMessageGpadlBody, NULL}, | |
124 | {ChannelMessageGpadlCreated, VmbusChannelOnGpadlCreated}, | |
125 | {ChannelMessageGpadlTeardown, NULL}, | |
126 | {ChannelMessageGpadlTorndown, VmbusChannelOnGpadlTorndown}, | |
127 | {ChannelMessageRelIdReleased, NULL}, | |
128 | {ChannelMessageInitiateContact, NULL}, | |
129 | {ChannelMessageVersionResponse, VmbusChannelOnVersionResponse}, | |
130 | {ChannelMessageUnload, NULL}, | |
131 | }; | |
132 | ||
133 | /*++ | |
134 | ||
135 | Name: | |
136 | AllocVmbusChannel() | |
137 | ||
138 | Description: | |
139 | Allocate and initialize a vmbus channel object | |
140 | ||
141 | --*/ | |
142 | VMBUS_CHANNEL* AllocVmbusChannel(void) | |
143 | { | |
144 | VMBUS_CHANNEL* channel; | |
145 | ||
0a72f3cf | 146 | channel = kzalloc(sizeof(VMBUS_CHANNEL), GFP_ATOMIC); |
3e7ee490 HJ |
147 | if (!channel) |
148 | { | |
149 | return NULL; | |
150 | } | |
151 | ||
54411c42 | 152 | spin_lock_init(&channel->inbound_lock); |
3e7ee490 HJ |
153 | |
154 | channel->PollTimer = TimerCreate(VmbusChannelOnTimer, channel); | |
155 | if (!channel->PollTimer) | |
156 | { | |
8c69f52a | 157 | kfree(channel); |
3e7ee490 HJ |
158 | return NULL; |
159 | } | |
160 | ||
161 | //channel->dataWorkQueue = WorkQueueCreate("data"); | |
162 | channel->ControlWQ = WorkQueueCreate("control"); | |
163 | if (!channel->ControlWQ) | |
164 | { | |
165 | TimerClose(channel->PollTimer); | |
8c69f52a | 166 | kfree(channel); |
3e7ee490 HJ |
167 | return NULL; |
168 | } | |
169 | ||
170 | return channel; | |
171 | } | |
172 | ||
173 | /*++ | |
174 | ||
175 | Name: | |
176 | ReleaseVmbusChannel() | |
177 | ||
178 | Description: | |
179 | Release the vmbus channel object itself | |
180 | ||
181 | --*/ | |
182 | static inline void ReleaseVmbusChannel(void* Context) | |
183 | { | |
184 | VMBUS_CHANNEL* channel = (VMBUS_CHANNEL*)Context; | |
185 | ||
186 | DPRINT_ENTER(VMBUS); | |
187 | ||
188 | DPRINT_DBG(VMBUS, "releasing channel (%p)", channel); | |
189 | WorkQueueClose(channel->ControlWQ); | |
190 | DPRINT_DBG(VMBUS, "channel released (%p)", channel); | |
191 | ||
8c69f52a | 192 | kfree(channel); |
3e7ee490 HJ |
193 | |
194 | DPRINT_EXIT(VMBUS); | |
195 | } | |
196 | ||
197 | /*++ | |
198 | ||
199 | Name: | |
200 | FreeVmbusChannel() | |
201 | ||
202 | Description: | |
203 | Release the resources used by the vmbus channel object | |
204 | ||
205 | --*/ | |
206 | void FreeVmbusChannel(VMBUS_CHANNEL* Channel) | |
207 | { | |
3e7ee490 HJ |
208 | TimerClose(Channel->PollTimer); |
209 | ||
210 | // We have to release the channel's workqueue/thread in the vmbus's workqueue/thread context | |
211 | // ie we can't destroy ourselves. | |
212 | WorkQueueQueueWorkItem(gVmbusConnection.WorkQueue, ReleaseVmbusChannel, (void*)Channel); | |
213 | } | |
214 | ||
215 | ||
216 | /*++ | |
217 | ||
218 | Name: | |
219 | VmbusChannelProcessOffer() | |
220 | ||
221 | Description: | |
222 | Process the offer by creating a channel/device associated with this offer | |
223 | ||
224 | --*/ | |
225 | static void | |
226 | VmbusChannelProcessOffer( | |
8282c400 | 227 | void * context |
3e7ee490 HJ |
228 | ) |
229 | { | |
230 | int ret=0; | |
231 | VMBUS_CHANNEL* newChannel=(VMBUS_CHANNEL*)context; | |
232 | LIST_ENTRY* anchor; | |
233 | LIST_ENTRY* curr; | |
0e727613 | 234 | bool fNew = true; |
3e7ee490 | 235 | VMBUS_CHANNEL* channel; |
0f5e44ca | 236 | unsigned long flags; |
3e7ee490 HJ |
237 | |
238 | DPRINT_ENTER(VMBUS); | |
239 | ||
240 | // Make sure this is a new offer | |
0f5e44ca | 241 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
242 | |
243 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) | |
244 | { | |
245 | channel = CONTAINING_RECORD(curr, VMBUS_CHANNEL, ListEntry); | |
246 | ||
247 | if (!memcmp(&channel->OfferMsg.Offer.InterfaceType, &newChannel->OfferMsg.Offer.InterfaceType,sizeof(GUID)) && | |
248 | !memcmp(&channel->OfferMsg.Offer.InterfaceInstance, &newChannel->OfferMsg.Offer.InterfaceInstance, sizeof(GUID))) | |
249 | { | |
0e727613 | 250 | fNew = false; |
3e7ee490 HJ |
251 | break; |
252 | } | |
253 | } | |
254 | ||
255 | if (fNew) | |
256 | { | |
257 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelList, &newChannel->ListEntry); | |
258 | } | |
0f5e44ca | 259 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
260 | |
261 | if (!fNew) | |
262 | { | |
263 | DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)", newChannel->OfferMsg.ChildRelId); | |
264 | FreeVmbusChannel(newChannel); | |
265 | DPRINT_EXIT(VMBUS); | |
266 | return; | |
267 | } | |
268 | ||
269 | // Start the process of binding this offer to the driver | |
270 | // We need to set the DeviceObject field before calling VmbusChildDeviceAdd() | |
271 | newChannel->DeviceObject = VmbusChildDeviceCreate( | |
272 | newChannel->OfferMsg.Offer.InterfaceType, | |
273 | newChannel->OfferMsg.Offer.InterfaceInstance, | |
274 | newChannel); | |
275 | ||
276 | DPRINT_DBG(VMBUS, "child device object allocated - %p", newChannel->DeviceObject); | |
277 | ||
278 | // Add the new device to the bus. This will kick off device-driver binding | |
279 | // which eventually invokes the device driver's AddDevice() method. | |
280 | ret = VmbusChildDeviceAdd(newChannel->DeviceObject); | |
281 | if (ret != 0) | |
282 | { | |
283 | DPRINT_ERR(VMBUS, "unable to add child device object (relid %d)", | |
284 | newChannel->OfferMsg.ChildRelId); | |
285 | ||
0f5e44ca | 286 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 | 287 | REMOVE_ENTRY_LIST(&newChannel->ListEntry); |
0f5e44ca | 288 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
289 | |
290 | FreeVmbusChannel(newChannel); | |
291 | } | |
292 | else | |
293 | { | |
294 | // This state is used to indicate a successful open so that when we do close the channel normally, | |
295 | // we can cleanup properly | |
296 | newChannel->State = CHANNEL_OPEN_STATE; | |
297 | } | |
298 | DPRINT_EXIT(VMBUS); | |
299 | } | |
300 | ||
301 | /*++ | |
302 | ||
303 | Name: | |
304 | VmbusChannelProcessRescindOffer() | |
305 | ||
306 | Description: | |
307 | Rescind the offer by initiating a device removal | |
308 | ||
309 | --*/ | |
310 | static void | |
311 | VmbusChannelProcessRescindOffer( | |
8282c400 | 312 | void * context |
3e7ee490 HJ |
313 | ) |
314 | { | |
315 | VMBUS_CHANNEL* channel=(VMBUS_CHANNEL*)context; | |
316 | ||
317 | DPRINT_ENTER(VMBUS); | |
318 | ||
319 | VmbusChildDeviceRemove(channel->DeviceObject); | |
320 | ||
321 | DPRINT_EXIT(VMBUS); | |
322 | } | |
323 | ||
324 | ||
325 | /*++ | |
326 | ||
327 | Name: | |
328 | VmbusChannelOnOffer() | |
329 | ||
330 | Description: | |
331 | Handler for channel offers from vmbus in parent partition. We ignore all offers except | |
332 | network and storage offers. For each network and storage offers, we create a channel object | |
333 | and queue a work item to the channel object to process the offer synchronously | |
334 | ||
335 | --*/ | |
336 | static void | |
337 | VmbusChannelOnOffer( | |
338 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
339 | ) | |
340 | { | |
341 | VMBUS_CHANNEL_OFFER_CHANNEL* offer = (VMBUS_CHANNEL_OFFER_CHANNEL*)hdr; | |
342 | VMBUS_CHANNEL* newChannel; | |
343 | ||
344 | GUID *guidType; | |
345 | GUID *guidInstance; | |
346 | int i; | |
347 | int fSupported=0; | |
348 | ||
349 | DPRINT_ENTER(VMBUS); | |
350 | ||
351 | for (i=0; i<MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) | |
352 | { | |
353 | if (memcmp(&offer->Offer.InterfaceType, &gSupportedDeviceClasses[i], sizeof(GUID)) == 0) | |
354 | { | |
355 | fSupported = 1; | |
356 | break; | |
357 | } | |
358 | } | |
359 | ||
360 | if (!fSupported) | |
361 | { | |
362 | DPRINT_DBG(VMBUS, "Ignoring channel offer notification for child relid %d", offer->ChildRelId); | |
363 | DPRINT_EXIT(VMBUS); | |
364 | ||
365 | return; | |
366 | } | |
367 | ||
368 | guidType = &offer->Offer.InterfaceType; | |
369 | guidInstance = &offer->Offer.InterfaceInstance; | |
370 | ||
371 | DPRINT_INFO(VMBUS, "Channel offer notification - child relid %d monitor id %d allocated %d, " | |
372 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x} " | |
373 | "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}", | |
374 | offer->ChildRelId, | |
375 | offer->MonitorId, | |
376 | offer->MonitorAllocated, | |
377 | guidType->Data[3], guidType->Data[2], guidType->Data[1], guidType->Data[0], guidType->Data[5], guidType->Data[4], guidType->Data[7], guidType->Data[6], guidType->Data[8], guidType->Data[9], guidType->Data[10], guidType->Data[11], guidType->Data[12], guidType->Data[13], guidType->Data[14], guidType->Data[15], | |
378 | guidInstance->Data[3], guidInstance->Data[2], guidInstance->Data[1], guidInstance->Data[0], guidInstance->Data[5], guidInstance->Data[4], guidInstance->Data[7], guidInstance->Data[6], guidInstance->Data[8], guidInstance->Data[9], guidInstance->Data[10], guidInstance->Data[11], guidInstance->Data[12], guidInstance->Data[13], guidInstance->Data[14], guidInstance->Data[15]); | |
379 | ||
380 | // Allocate the channel object and save this offer. | |
381 | newChannel = AllocVmbusChannel(); | |
382 | if (!newChannel) | |
383 | { | |
384 | DPRINT_ERR(VMBUS, "unable to allocate channel object"); | |
385 | return; | |
386 | } | |
387 | ||
388 | DPRINT_DBG(VMBUS, "channel object allocated - %p", newChannel); | |
389 | ||
390 | memcpy(&newChannel->OfferMsg, offer, sizeof(VMBUS_CHANNEL_OFFER_CHANNEL)); | |
5654e932 GKH |
391 | newChannel->MonitorGroup = (u8)offer->MonitorId / 32; |
392 | newChannel->MonitorBit = (u8)offer->MonitorId % 32; | |
3e7ee490 HJ |
393 | |
394 | // TODO: Make sure the offer comes from our parent partition | |
395 | WorkQueueQueueWorkItem(newChannel->ControlWQ, VmbusChannelProcessOffer, newChannel); | |
396 | ||
397 | DPRINT_EXIT(VMBUS); | |
398 | } | |
399 | ||
400 | ||
401 | /*++ | |
402 | ||
403 | Name: | |
404 | VmbusChannelOnOfferRescind() | |
405 | ||
406 | Description: | |
407 | Rescind offer handler. We queue a work item to process this offer | |
408 | synchronously | |
409 | ||
410 | --*/ | |
411 | static void | |
412 | VmbusChannelOnOfferRescind( | |
413 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
414 | ) | |
415 | { | |
416 | VMBUS_CHANNEL_RESCIND_OFFER* rescind = (VMBUS_CHANNEL_RESCIND_OFFER*)hdr; | |
417 | VMBUS_CHANNEL* channel; | |
418 | ||
419 | DPRINT_ENTER(VMBUS); | |
420 | ||
421 | channel = GetChannelFromRelId(rescind->ChildRelId); | |
422 | if (channel == NULL) | |
423 | { | |
424 | DPRINT_DBG(VMBUS, "channel not found for relId %d", rescind->ChildRelId); | |
425 | return; | |
426 | } | |
427 | ||
428 | WorkQueueQueueWorkItem(channel->ControlWQ, VmbusChannelProcessRescindOffer, channel); | |
429 | ||
430 | DPRINT_EXIT(VMBUS); | |
431 | } | |
432 | ||
433 | ||
434 | /*++ | |
435 | ||
436 | Name: | |
437 | VmbusChannelOnOffersDelivered() | |
438 | ||
439 | Description: | |
440 | This is invoked when all offers have been delivered. | |
441 | Nothing to do here. | |
442 | ||
443 | --*/ | |
444 | static void | |
445 | VmbusChannelOnOffersDelivered( | |
446 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
447 | ) | |
448 | { | |
449 | DPRINT_ENTER(VMBUS); | |
450 | DPRINT_EXIT(VMBUS); | |
451 | } | |
452 | ||
453 | ||
454 | /*++ | |
455 | ||
456 | Name: | |
457 | VmbusChannelOnOpenResult() | |
458 | ||
459 | Description: | |
460 | Open result handler. This is invoked when we received a response | |
461 | to our channel open request. Find the matching request, copy the | |
462 | response and signal the requesting thread. | |
463 | ||
464 | --*/ | |
465 | static void | |
466 | VmbusChannelOnOpenResult( | |
467 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
468 | ) | |
469 | { | |
470 | VMBUS_CHANNEL_OPEN_RESULT* result = (VMBUS_CHANNEL_OPEN_RESULT*)hdr; | |
471 | LIST_ENTRY* anchor; | |
472 | LIST_ENTRY* curr; | |
473 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
474 | VMBUS_CHANNEL_MESSAGE_HEADER* requestHeader; | |
475 | VMBUS_CHANNEL_OPEN_CHANNEL* openMsg; | |
dd0813b6 | 476 | unsigned long flags; |
3e7ee490 HJ |
477 | |
478 | DPRINT_ENTER(VMBUS); | |
479 | ||
480 | DPRINT_DBG(VMBUS, "vmbus open result - %d", result->Status); | |
481 | ||
482 | // Find the open msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 483 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
484 | |
485 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
486 | { | |
487 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
488 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
489 | ||
490 | if (requestHeader->MessageType == ChannelMessageOpenChannel) | |
491 | { | |
492 | openMsg = (VMBUS_CHANNEL_OPEN_CHANNEL*)msgInfo->Msg; | |
493 | if (openMsg->ChildRelId == result->ChildRelId && | |
494 | openMsg->OpenId == result->OpenId) | |
495 | { | |
496 | memcpy(&msgInfo->Response.OpenResult, result, sizeof(VMBUS_CHANNEL_OPEN_RESULT)); | |
497 | WaitEventSet(msgInfo->WaitEvent); | |
498 | break; | |
499 | } | |
500 | } | |
501 | } | |
dd0813b6 | 502 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
503 | |
504 | DPRINT_EXIT(VMBUS); | |
505 | } | |
506 | ||
507 | ||
508 | /*++ | |
509 | ||
510 | Name: | |
511 | VmbusChannelOnGpadlCreated() | |
512 | ||
513 | Description: | |
514 | GPADL created handler. This is invoked when we received a response | |
515 | to our gpadl create request. Find the matching request, copy the | |
516 | response and signal the requesting thread. | |
517 | ||
518 | --*/ | |
519 | static void | |
520 | VmbusChannelOnGpadlCreated( | |
521 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
522 | ) | |
523 | { | |
524 | VMBUS_CHANNEL_GPADL_CREATED *gpadlCreated = (VMBUS_CHANNEL_GPADL_CREATED*)hdr; | |
525 | LIST_ENTRY *anchor; | |
526 | LIST_ENTRY *curr; | |
527 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
528 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
529 | VMBUS_CHANNEL_GPADL_HEADER *gpadlHeader; | |
dd0813b6 | 530 | unsigned long flags; |
3e7ee490 HJ |
531 | |
532 | DPRINT_ENTER(VMBUS); | |
533 | ||
534 | DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d", gpadlCreated->CreationStatus); | |
535 | ||
536 | // Find the establish msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 537 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
538 | |
539 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
540 | { | |
541 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
542 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
543 | ||
544 | if (requestHeader->MessageType == ChannelMessageGpadlHeader) | |
545 | { | |
546 | gpadlHeader = (VMBUS_CHANNEL_GPADL_HEADER*)requestHeader; | |
547 | ||
548 | if ((gpadlCreated->ChildRelId == gpadlHeader->ChildRelId) && | |
549 | (gpadlCreated->Gpadl == gpadlHeader->Gpadl)) | |
550 | { | |
551 | memcpy(&msgInfo->Response.GpadlCreated, gpadlCreated, sizeof(VMBUS_CHANNEL_GPADL_CREATED)); | |
552 | WaitEventSet(msgInfo->WaitEvent); | |
553 | break; | |
554 | } | |
555 | } | |
556 | } | |
dd0813b6 | 557 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
558 | |
559 | DPRINT_EXIT(VMBUS); | |
560 | } | |
561 | ||
562 | ||
563 | /*++ | |
564 | ||
565 | Name: | |
566 | VmbusChannelOnGpadlTorndown() | |
567 | ||
568 | Description: | |
569 | GPADL torndown handler. This is invoked when we received a response | |
570 | to our gpadl teardown request. Find the matching request, copy the | |
571 | response and signal the requesting thread. | |
572 | ||
573 | --*/ | |
574 | static void | |
575 | VmbusChannelOnGpadlTorndown( | |
576 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
577 | ) | |
578 | { | |
579 | VMBUS_CHANNEL_GPADL_TORNDOWN* gpadlTorndown = (VMBUS_CHANNEL_GPADL_TORNDOWN*)hdr; | |
580 | LIST_ENTRY* anchor; | |
581 | LIST_ENTRY* curr; | |
582 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
583 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
584 | VMBUS_CHANNEL_GPADL_TEARDOWN *gpadlTeardown; | |
dd0813b6 | 585 | unsigned long flags; |
3e7ee490 HJ |
586 | |
587 | DPRINT_ENTER(VMBUS); | |
588 | ||
589 | // Find the open msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 590 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
591 | |
592 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
593 | { | |
594 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
595 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
596 | ||
597 | if (requestHeader->MessageType == ChannelMessageGpadlTeardown) | |
598 | { | |
599 | gpadlTeardown = (VMBUS_CHANNEL_GPADL_TEARDOWN*)requestHeader; | |
600 | ||
601 | if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl) | |
602 | { | |
603 | memcpy(&msgInfo->Response.GpadlTorndown, gpadlTorndown, sizeof(VMBUS_CHANNEL_GPADL_TORNDOWN)); | |
604 | WaitEventSet(msgInfo->WaitEvent); | |
605 | break; | |
606 | } | |
607 | } | |
608 | } | |
dd0813b6 | 609 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
610 | |
611 | DPRINT_EXIT(VMBUS); | |
612 | } | |
613 | ||
614 | ||
615 | /*++ | |
616 | ||
617 | Name: | |
618 | VmbusChannelOnVersionResponse() | |
619 | ||
620 | Description: | |
621 | Version response handler. This is invoked when we received a response | |
622 | to our initiate contact request. Find the matching request, copy the | |
623 | response and signal the requesting thread. | |
624 | ||
625 | --*/ | |
626 | static void | |
627 | VmbusChannelOnVersionResponse( | |
628 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
629 | ) | |
630 | { | |
631 | LIST_ENTRY* anchor; | |
632 | LIST_ENTRY* curr; | |
633 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
634 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
635 | VMBUS_CHANNEL_INITIATE_CONTACT *initiate; | |
636 | VMBUS_CHANNEL_VERSION_RESPONSE *versionResponse = (VMBUS_CHANNEL_VERSION_RESPONSE*)hdr; | |
dd0813b6 | 637 | unsigned long flags; |
3e7ee490 HJ |
638 | |
639 | DPRINT_ENTER(VMBUS); | |
640 | ||
dd0813b6 | 641 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
642 | |
643 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
644 | { | |
645 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
646 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
647 | ||
648 | if (requestHeader->MessageType == ChannelMessageInitiateContact) | |
649 | { | |
650 | initiate = (VMBUS_CHANNEL_INITIATE_CONTACT*)requestHeader; | |
651 | memcpy(&msgInfo->Response.VersionResponse, versionResponse, sizeof(VMBUS_CHANNEL_VERSION_RESPONSE)); | |
652 | WaitEventSet(msgInfo->WaitEvent); | |
653 | } | |
654 | } | |
dd0813b6 | 655 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
656 | |
657 | DPRINT_EXIT(VMBUS); | |
658 | } | |
659 | ||
660 | ||
661 | /*++ | |
662 | ||
663 | Name: | |
664 | VmbusOnChannelMessage() | |
665 | ||
666 | Description: | |
667 | Handler for channel protocol messages. | |
668 | This is invoked in the vmbus worker thread context. | |
669 | ||
670 | --*/ | |
e20f683b | 671 | void |
3e7ee490 HJ |
672 | VmbusOnChannelMessage( |
673 | void *Context | |
674 | ) | |
675 | { | |
676 | HV_MESSAGE *msg=(HV_MESSAGE*)Context; | |
677 | VMBUS_CHANNEL_MESSAGE_HEADER* hdr; | |
678 | int size; | |
679 | ||
680 | DPRINT_ENTER(VMBUS); | |
681 | ||
682 | hdr = (VMBUS_CHANNEL_MESSAGE_HEADER*)msg->u.Payload; | |
683 | size=msg->Header.PayloadSize; | |
684 | ||
685 | DPRINT_DBG(VMBUS, "message type %d size %d", hdr->MessageType, size); | |
686 | ||
687 | if (hdr->MessageType >= ChannelMessageCount) | |
688 | { | |
689 | DPRINT_ERR(VMBUS, "Received invalid channel message type %d size %d", hdr->MessageType, size); | |
04f50c4d GKH |
690 | print_hex_dump_bytes("", DUMP_PREFIX_NONE, |
691 | (unsigned char *)msg->u.Payload, size); | |
8c69f52a | 692 | kfree(msg); |
3e7ee490 HJ |
693 | return; |
694 | } | |
695 | ||
696 | if (gChannelMessageTable[hdr->MessageType].messageHandler) | |
697 | { | |
698 | gChannelMessageTable[hdr->MessageType].messageHandler(hdr); | |
699 | } | |
700 | else | |
701 | { | |
702 | DPRINT_ERR(VMBUS, "Unhandled channel message type %d", hdr->MessageType); | |
703 | } | |
704 | ||
705 | // Free the msg that was allocated in VmbusOnMsgDPC() | |
8c69f52a | 706 | kfree(msg); |
3e7ee490 HJ |
707 | DPRINT_EXIT(VMBUS); |
708 | } | |
709 | ||
710 | ||
711 | /*++ | |
712 | ||
713 | Name: | |
714 | VmbusChannelRequestOffers() | |
715 | ||
716 | Description: | |
717 | Send a request to get all our pending offers. | |
718 | ||
719 | --*/ | |
720 | int | |
721 | VmbusChannelRequestOffers( | |
e20f683b | 722 | void |
3e7ee490 HJ |
723 | ) |
724 | { | |
725 | int ret=0; | |
726 | VMBUS_CHANNEL_MESSAGE_HEADER* msg; | |
727 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
728 | ||
729 | DPRINT_ENTER(VMBUS); | |
730 | ||
e40d37cc | 731 | msgInfo = kmalloc(sizeof(VMBUS_CHANNEL_MSGINFO) + sizeof(VMBUS_CHANNEL_MESSAGE_HEADER), GFP_KERNEL); |
3e7ee490 HJ |
732 | ASSERT(msgInfo != NULL); |
733 | ||
734 | msgInfo->WaitEvent = WaitEventCreate(); | |
735 | msg = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
736 | ||
737 | msg->MessageType = ChannelMessageRequestOffers; | |
738 | ||
739 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
740 | INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList, &msgInfo->msgListEntry); | |
741 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
742 | ||
743 | ret = VmbusPostMessage(msg, sizeof(VMBUS_CHANNEL_MESSAGE_HEADER)); | |
744 | if (ret != 0) | |
745 | { | |
746 | DPRINT_ERR(VMBUS, "Unable to request offers - %d", ret); | |
747 | ||
748 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
749 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
750 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
751 | ||
752 | goto Cleanup; | |
753 | } | |
754 | //WaitEventWait(msgInfo->waitEvent); | |
755 | ||
756 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
757 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
758 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
759 | ||
760 | ||
761 | Cleanup: | |
762 | if (msgInfo) | |
763 | { | |
764 | WaitEventClose(msgInfo->WaitEvent); | |
8c69f52a | 765 | kfree(msgInfo); |
3e7ee490 HJ |
766 | } |
767 | ||
768 | DPRINT_EXIT(VMBUS); | |
769 | ||
770 | return ret; | |
771 | } | |
772 | ||
773 | /*++ | |
774 | ||
775 | Name: | |
776 | VmbusChannelReleaseUnattachedChannels() | |
777 | ||
778 | Description: | |
779 | Release channels that are unattached/unconnected ie (no drivers associated) | |
780 | ||
781 | --*/ | |
782 | void | |
783 | VmbusChannelReleaseUnattachedChannels( | |
e20f683b | 784 | void |
3e7ee490 HJ |
785 | ) |
786 | { | |
787 | LIST_ENTRY *entry; | |
788 | VMBUS_CHANNEL *channel; | |
789 | VMBUS_CHANNEL *start=NULL; | |
0f5e44ca | 790 | unsigned long flags; |
3e7ee490 | 791 | |
0f5e44ca | 792 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
793 | |
794 | while (!IsListEmpty(&gVmbusConnection.ChannelList)) | |
795 | { | |
796 | entry = TOP_LIST_ENTRY(&gVmbusConnection.ChannelList); | |
797 | channel = CONTAINING_RECORD(entry, VMBUS_CHANNEL, ListEntry); | |
798 | ||
799 | if (channel == start) | |
800 | break; | |
801 | ||
802 | if (!channel->DeviceObject->Driver) | |
803 | { | |
804 | REMOVE_ENTRY_LIST(&channel->ListEntry); | |
805 | DPRINT_INFO(VMBUS, "Releasing unattached device object %p", channel->DeviceObject); | |
806 | ||
807 | VmbusChildDeviceRemove(channel->DeviceObject); | |
808 | FreeVmbusChannel(channel); | |
809 | } | |
810 | else | |
811 | { | |
812 | if (!start) | |
813 | { | |
814 | start = channel; | |
815 | } | |
816 | } | |
817 | } | |
818 | ||
0f5e44ca | 819 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
820 | } |
821 | ||
822 | // eof | |
823 |