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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 HJ |
235 | VMBUS_CHANNEL* channel; |
236 | ||
237 | DPRINT_ENTER(VMBUS); | |
238 | ||
239 | // Make sure this is a new offer | |
240 | SpinlockAcquire(gVmbusConnection.ChannelLock); | |
241 | ||
242 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) | |
243 | { | |
244 | channel = CONTAINING_RECORD(curr, VMBUS_CHANNEL, ListEntry); | |
245 | ||
246 | if (!memcmp(&channel->OfferMsg.Offer.InterfaceType, &newChannel->OfferMsg.Offer.InterfaceType,sizeof(GUID)) && | |
247 | !memcmp(&channel->OfferMsg.Offer.InterfaceInstance, &newChannel->OfferMsg.Offer.InterfaceInstance, sizeof(GUID))) | |
248 | { | |
0e727613 | 249 | fNew = false; |
3e7ee490 HJ |
250 | break; |
251 | } | |
252 | } | |
253 | ||
254 | if (fNew) | |
255 | { | |
256 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelList, &newChannel->ListEntry); | |
257 | } | |
258 | SpinlockRelease(gVmbusConnection.ChannelLock); | |
259 | ||
260 | if (!fNew) | |
261 | { | |
262 | DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)", newChannel->OfferMsg.ChildRelId); | |
263 | FreeVmbusChannel(newChannel); | |
264 | DPRINT_EXIT(VMBUS); | |
265 | return; | |
266 | } | |
267 | ||
268 | // Start the process of binding this offer to the driver | |
269 | // We need to set the DeviceObject field before calling VmbusChildDeviceAdd() | |
270 | newChannel->DeviceObject = VmbusChildDeviceCreate( | |
271 | newChannel->OfferMsg.Offer.InterfaceType, | |
272 | newChannel->OfferMsg.Offer.InterfaceInstance, | |
273 | newChannel); | |
274 | ||
275 | DPRINT_DBG(VMBUS, "child device object allocated - %p", newChannel->DeviceObject); | |
276 | ||
277 | // Add the new device to the bus. This will kick off device-driver binding | |
278 | // which eventually invokes the device driver's AddDevice() method. | |
279 | ret = VmbusChildDeviceAdd(newChannel->DeviceObject); | |
280 | if (ret != 0) | |
281 | { | |
282 | DPRINT_ERR(VMBUS, "unable to add child device object (relid %d)", | |
283 | newChannel->OfferMsg.ChildRelId); | |
284 | ||
285 | SpinlockAcquire(gVmbusConnection.ChannelLock); | |
286 | REMOVE_ENTRY_LIST(&newChannel->ListEntry); | |
287 | SpinlockRelease(gVmbusConnection.ChannelLock); | |
288 | ||
289 | FreeVmbusChannel(newChannel); | |
290 | } | |
291 | else | |
292 | { | |
293 | // This state is used to indicate a successful open so that when we do close the channel normally, | |
294 | // we can cleanup properly | |
295 | newChannel->State = CHANNEL_OPEN_STATE; | |
296 | } | |
297 | DPRINT_EXIT(VMBUS); | |
298 | } | |
299 | ||
300 | /*++ | |
301 | ||
302 | Name: | |
303 | VmbusChannelProcessRescindOffer() | |
304 | ||
305 | Description: | |
306 | Rescind the offer by initiating a device removal | |
307 | ||
308 | --*/ | |
309 | static void | |
310 | VmbusChannelProcessRescindOffer( | |
8282c400 | 311 | void * context |
3e7ee490 HJ |
312 | ) |
313 | { | |
314 | VMBUS_CHANNEL* channel=(VMBUS_CHANNEL*)context; | |
315 | ||
316 | DPRINT_ENTER(VMBUS); | |
317 | ||
318 | VmbusChildDeviceRemove(channel->DeviceObject); | |
319 | ||
320 | DPRINT_EXIT(VMBUS); | |
321 | } | |
322 | ||
323 | ||
324 | /*++ | |
325 | ||
326 | Name: | |
327 | VmbusChannelOnOffer() | |
328 | ||
329 | Description: | |
330 | Handler for channel offers from vmbus in parent partition. We ignore all offers except | |
331 | network and storage offers. For each network and storage offers, we create a channel object | |
332 | and queue a work item to the channel object to process the offer synchronously | |
333 | ||
334 | --*/ | |
335 | static void | |
336 | VmbusChannelOnOffer( | |
337 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
338 | ) | |
339 | { | |
340 | VMBUS_CHANNEL_OFFER_CHANNEL* offer = (VMBUS_CHANNEL_OFFER_CHANNEL*)hdr; | |
341 | VMBUS_CHANNEL* newChannel; | |
342 | ||
343 | GUID *guidType; | |
344 | GUID *guidInstance; | |
345 | int i; | |
346 | int fSupported=0; | |
347 | ||
348 | DPRINT_ENTER(VMBUS); | |
349 | ||
350 | for (i=0; i<MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) | |
351 | { | |
352 | if (memcmp(&offer->Offer.InterfaceType, &gSupportedDeviceClasses[i], sizeof(GUID)) == 0) | |
353 | { | |
354 | fSupported = 1; | |
355 | break; | |
356 | } | |
357 | } | |
358 | ||
359 | if (!fSupported) | |
360 | { | |
361 | DPRINT_DBG(VMBUS, "Ignoring channel offer notification for child relid %d", offer->ChildRelId); | |
362 | DPRINT_EXIT(VMBUS); | |
363 | ||
364 | return; | |
365 | } | |
366 | ||
367 | guidType = &offer->Offer.InterfaceType; | |
368 | guidInstance = &offer->Offer.InterfaceInstance; | |
369 | ||
370 | DPRINT_INFO(VMBUS, "Channel offer notification - child relid %d monitor id %d allocated %d, " | |
371 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x} " | |
372 | "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}", | |
373 | offer->ChildRelId, | |
374 | offer->MonitorId, | |
375 | offer->MonitorAllocated, | |
376 | 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], | |
377 | 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]); | |
378 | ||
379 | // Allocate the channel object and save this offer. | |
380 | newChannel = AllocVmbusChannel(); | |
381 | if (!newChannel) | |
382 | { | |
383 | DPRINT_ERR(VMBUS, "unable to allocate channel object"); | |
384 | return; | |
385 | } | |
386 | ||
387 | DPRINT_DBG(VMBUS, "channel object allocated - %p", newChannel); | |
388 | ||
389 | memcpy(&newChannel->OfferMsg, offer, sizeof(VMBUS_CHANNEL_OFFER_CHANNEL)); | |
5654e932 GKH |
390 | newChannel->MonitorGroup = (u8)offer->MonitorId / 32; |
391 | newChannel->MonitorBit = (u8)offer->MonitorId % 32; | |
3e7ee490 HJ |
392 | |
393 | // TODO: Make sure the offer comes from our parent partition | |
394 | WorkQueueQueueWorkItem(newChannel->ControlWQ, VmbusChannelProcessOffer, newChannel); | |
395 | ||
396 | DPRINT_EXIT(VMBUS); | |
397 | } | |
398 | ||
399 | ||
400 | /*++ | |
401 | ||
402 | Name: | |
403 | VmbusChannelOnOfferRescind() | |
404 | ||
405 | Description: | |
406 | Rescind offer handler. We queue a work item to process this offer | |
407 | synchronously | |
408 | ||
409 | --*/ | |
410 | static void | |
411 | VmbusChannelOnOfferRescind( | |
412 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
413 | ) | |
414 | { | |
415 | VMBUS_CHANNEL_RESCIND_OFFER* rescind = (VMBUS_CHANNEL_RESCIND_OFFER*)hdr; | |
416 | VMBUS_CHANNEL* channel; | |
417 | ||
418 | DPRINT_ENTER(VMBUS); | |
419 | ||
420 | channel = GetChannelFromRelId(rescind->ChildRelId); | |
421 | if (channel == NULL) | |
422 | { | |
423 | DPRINT_DBG(VMBUS, "channel not found for relId %d", rescind->ChildRelId); | |
424 | return; | |
425 | } | |
426 | ||
427 | WorkQueueQueueWorkItem(channel->ControlWQ, VmbusChannelProcessRescindOffer, channel); | |
428 | ||
429 | DPRINT_EXIT(VMBUS); | |
430 | } | |
431 | ||
432 | ||
433 | /*++ | |
434 | ||
435 | Name: | |
436 | VmbusChannelOnOffersDelivered() | |
437 | ||
438 | Description: | |
439 | This is invoked when all offers have been delivered. | |
440 | Nothing to do here. | |
441 | ||
442 | --*/ | |
443 | static void | |
444 | VmbusChannelOnOffersDelivered( | |
445 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
446 | ) | |
447 | { | |
448 | DPRINT_ENTER(VMBUS); | |
449 | DPRINT_EXIT(VMBUS); | |
450 | } | |
451 | ||
452 | ||
453 | /*++ | |
454 | ||
455 | Name: | |
456 | VmbusChannelOnOpenResult() | |
457 | ||
458 | Description: | |
459 | Open result handler. This is invoked when we received a response | |
460 | to our channel open request. Find the matching request, copy the | |
461 | response and signal the requesting thread. | |
462 | ||
463 | --*/ | |
464 | static void | |
465 | VmbusChannelOnOpenResult( | |
466 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
467 | ) | |
468 | { | |
469 | VMBUS_CHANNEL_OPEN_RESULT* result = (VMBUS_CHANNEL_OPEN_RESULT*)hdr; | |
470 | LIST_ENTRY* anchor; | |
471 | LIST_ENTRY* curr; | |
472 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
473 | VMBUS_CHANNEL_MESSAGE_HEADER* requestHeader; | |
474 | VMBUS_CHANNEL_OPEN_CHANNEL* openMsg; | |
dd0813b6 | 475 | unsigned long flags; |
3e7ee490 HJ |
476 | |
477 | DPRINT_ENTER(VMBUS); | |
478 | ||
479 | DPRINT_DBG(VMBUS, "vmbus open result - %d", result->Status); | |
480 | ||
481 | // Find the open msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 482 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
483 | |
484 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
485 | { | |
486 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
487 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
488 | ||
489 | if (requestHeader->MessageType == ChannelMessageOpenChannel) | |
490 | { | |
491 | openMsg = (VMBUS_CHANNEL_OPEN_CHANNEL*)msgInfo->Msg; | |
492 | if (openMsg->ChildRelId == result->ChildRelId && | |
493 | openMsg->OpenId == result->OpenId) | |
494 | { | |
495 | memcpy(&msgInfo->Response.OpenResult, result, sizeof(VMBUS_CHANNEL_OPEN_RESULT)); | |
496 | WaitEventSet(msgInfo->WaitEvent); | |
497 | break; | |
498 | } | |
499 | } | |
500 | } | |
dd0813b6 | 501 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
502 | |
503 | DPRINT_EXIT(VMBUS); | |
504 | } | |
505 | ||
506 | ||
507 | /*++ | |
508 | ||
509 | Name: | |
510 | VmbusChannelOnGpadlCreated() | |
511 | ||
512 | Description: | |
513 | GPADL created handler. This is invoked when we received a response | |
514 | to our gpadl create request. Find the matching request, copy the | |
515 | response and signal the requesting thread. | |
516 | ||
517 | --*/ | |
518 | static void | |
519 | VmbusChannelOnGpadlCreated( | |
520 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
521 | ) | |
522 | { | |
523 | VMBUS_CHANNEL_GPADL_CREATED *gpadlCreated = (VMBUS_CHANNEL_GPADL_CREATED*)hdr; | |
524 | LIST_ENTRY *anchor; | |
525 | LIST_ENTRY *curr; | |
526 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
527 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
528 | VMBUS_CHANNEL_GPADL_HEADER *gpadlHeader; | |
dd0813b6 | 529 | unsigned long flags; |
3e7ee490 HJ |
530 | |
531 | DPRINT_ENTER(VMBUS); | |
532 | ||
533 | DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d", gpadlCreated->CreationStatus); | |
534 | ||
535 | // Find the establish msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 536 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
537 | |
538 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
539 | { | |
540 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
541 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
542 | ||
543 | if (requestHeader->MessageType == ChannelMessageGpadlHeader) | |
544 | { | |
545 | gpadlHeader = (VMBUS_CHANNEL_GPADL_HEADER*)requestHeader; | |
546 | ||
547 | if ((gpadlCreated->ChildRelId == gpadlHeader->ChildRelId) && | |
548 | (gpadlCreated->Gpadl == gpadlHeader->Gpadl)) | |
549 | { | |
550 | memcpy(&msgInfo->Response.GpadlCreated, gpadlCreated, sizeof(VMBUS_CHANNEL_GPADL_CREATED)); | |
551 | WaitEventSet(msgInfo->WaitEvent); | |
552 | break; | |
553 | } | |
554 | } | |
555 | } | |
dd0813b6 | 556 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
557 | |
558 | DPRINT_EXIT(VMBUS); | |
559 | } | |
560 | ||
561 | ||
562 | /*++ | |
563 | ||
564 | Name: | |
565 | VmbusChannelOnGpadlTorndown() | |
566 | ||
567 | Description: | |
568 | GPADL torndown handler. This is invoked when we received a response | |
569 | to our gpadl teardown request. Find the matching request, copy the | |
570 | response and signal the requesting thread. | |
571 | ||
572 | --*/ | |
573 | static void | |
574 | VmbusChannelOnGpadlTorndown( | |
575 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
576 | ) | |
577 | { | |
578 | VMBUS_CHANNEL_GPADL_TORNDOWN* gpadlTorndown = (VMBUS_CHANNEL_GPADL_TORNDOWN*)hdr; | |
579 | LIST_ENTRY* anchor; | |
580 | LIST_ENTRY* curr; | |
581 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
582 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
583 | VMBUS_CHANNEL_GPADL_TEARDOWN *gpadlTeardown; | |
dd0813b6 | 584 | unsigned long flags; |
3e7ee490 HJ |
585 | |
586 | DPRINT_ENTER(VMBUS); | |
587 | ||
588 | // Find the open msg, copy the result and signal/unblock the wait event | |
dd0813b6 | 589 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
590 | |
591 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
592 | { | |
593 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
594 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
595 | ||
596 | if (requestHeader->MessageType == ChannelMessageGpadlTeardown) | |
597 | { | |
598 | gpadlTeardown = (VMBUS_CHANNEL_GPADL_TEARDOWN*)requestHeader; | |
599 | ||
600 | if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl) | |
601 | { | |
602 | memcpy(&msgInfo->Response.GpadlTorndown, gpadlTorndown, sizeof(VMBUS_CHANNEL_GPADL_TORNDOWN)); | |
603 | WaitEventSet(msgInfo->WaitEvent); | |
604 | break; | |
605 | } | |
606 | } | |
607 | } | |
dd0813b6 | 608 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
609 | |
610 | DPRINT_EXIT(VMBUS); | |
611 | } | |
612 | ||
613 | ||
614 | /*++ | |
615 | ||
616 | Name: | |
617 | VmbusChannelOnVersionResponse() | |
618 | ||
619 | Description: | |
620 | Version response handler. This is invoked when we received a response | |
621 | to our initiate contact request. Find the matching request, copy the | |
622 | response and signal the requesting thread. | |
623 | ||
624 | --*/ | |
625 | static void | |
626 | VmbusChannelOnVersionResponse( | |
627 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
628 | ) | |
629 | { | |
630 | LIST_ENTRY* anchor; | |
631 | LIST_ENTRY* curr; | |
632 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
633 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
634 | VMBUS_CHANNEL_INITIATE_CONTACT *initiate; | |
635 | VMBUS_CHANNEL_VERSION_RESPONSE *versionResponse = (VMBUS_CHANNEL_VERSION_RESPONSE*)hdr; | |
dd0813b6 | 636 | unsigned long flags; |
3e7ee490 HJ |
637 | |
638 | DPRINT_ENTER(VMBUS); | |
639 | ||
dd0813b6 | 640 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
641 | |
642 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
643 | { | |
644 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
645 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
646 | ||
647 | if (requestHeader->MessageType == ChannelMessageInitiateContact) | |
648 | { | |
649 | initiate = (VMBUS_CHANNEL_INITIATE_CONTACT*)requestHeader; | |
650 | memcpy(&msgInfo->Response.VersionResponse, versionResponse, sizeof(VMBUS_CHANNEL_VERSION_RESPONSE)); | |
651 | WaitEventSet(msgInfo->WaitEvent); | |
652 | } | |
653 | } | |
dd0813b6 | 654 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
655 | |
656 | DPRINT_EXIT(VMBUS); | |
657 | } | |
658 | ||
659 | ||
660 | /*++ | |
661 | ||
662 | Name: | |
663 | VmbusOnChannelMessage() | |
664 | ||
665 | Description: | |
666 | Handler for channel protocol messages. | |
667 | This is invoked in the vmbus worker thread context. | |
668 | ||
669 | --*/ | |
e20f683b | 670 | void |
3e7ee490 HJ |
671 | VmbusOnChannelMessage( |
672 | void *Context | |
673 | ) | |
674 | { | |
675 | HV_MESSAGE *msg=(HV_MESSAGE*)Context; | |
676 | VMBUS_CHANNEL_MESSAGE_HEADER* hdr; | |
677 | int size; | |
678 | ||
679 | DPRINT_ENTER(VMBUS); | |
680 | ||
681 | hdr = (VMBUS_CHANNEL_MESSAGE_HEADER*)msg->u.Payload; | |
682 | size=msg->Header.PayloadSize; | |
683 | ||
684 | DPRINT_DBG(VMBUS, "message type %d size %d", hdr->MessageType, size); | |
685 | ||
686 | if (hdr->MessageType >= ChannelMessageCount) | |
687 | { | |
688 | DPRINT_ERR(VMBUS, "Received invalid channel message type %d size %d", hdr->MessageType, size); | |
689 | PrintBytes((unsigned char *)msg->u.Payload, size); | |
8c69f52a | 690 | kfree(msg); |
3e7ee490 HJ |
691 | return; |
692 | } | |
693 | ||
694 | if (gChannelMessageTable[hdr->MessageType].messageHandler) | |
695 | { | |
696 | gChannelMessageTable[hdr->MessageType].messageHandler(hdr); | |
697 | } | |
698 | else | |
699 | { | |
700 | DPRINT_ERR(VMBUS, "Unhandled channel message type %d", hdr->MessageType); | |
701 | } | |
702 | ||
703 | // Free the msg that was allocated in VmbusOnMsgDPC() | |
8c69f52a | 704 | kfree(msg); |
3e7ee490 HJ |
705 | DPRINT_EXIT(VMBUS); |
706 | } | |
707 | ||
708 | ||
709 | /*++ | |
710 | ||
711 | Name: | |
712 | VmbusChannelRequestOffers() | |
713 | ||
714 | Description: | |
715 | Send a request to get all our pending offers. | |
716 | ||
717 | --*/ | |
718 | int | |
719 | VmbusChannelRequestOffers( | |
e20f683b | 720 | void |
3e7ee490 HJ |
721 | ) |
722 | { | |
723 | int ret=0; | |
724 | VMBUS_CHANNEL_MESSAGE_HEADER* msg; | |
725 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
726 | ||
727 | DPRINT_ENTER(VMBUS); | |
728 | ||
e40d37cc | 729 | msgInfo = kmalloc(sizeof(VMBUS_CHANNEL_MSGINFO) + sizeof(VMBUS_CHANNEL_MESSAGE_HEADER), GFP_KERNEL); |
3e7ee490 HJ |
730 | ASSERT(msgInfo != NULL); |
731 | ||
732 | msgInfo->WaitEvent = WaitEventCreate(); | |
733 | msg = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
734 | ||
735 | msg->MessageType = ChannelMessageRequestOffers; | |
736 | ||
737 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
738 | INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList, &msgInfo->msgListEntry); | |
739 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
740 | ||
741 | ret = VmbusPostMessage(msg, sizeof(VMBUS_CHANNEL_MESSAGE_HEADER)); | |
742 | if (ret != 0) | |
743 | { | |
744 | DPRINT_ERR(VMBUS, "Unable to request offers - %d", ret); | |
745 | ||
746 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
747 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
748 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
749 | ||
750 | goto Cleanup; | |
751 | } | |
752 | //WaitEventWait(msgInfo->waitEvent); | |
753 | ||
754 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
755 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
756 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
757 | ||
758 | ||
759 | Cleanup: | |
760 | if (msgInfo) | |
761 | { | |
762 | WaitEventClose(msgInfo->WaitEvent); | |
8c69f52a | 763 | kfree(msgInfo); |
3e7ee490 HJ |
764 | } |
765 | ||
766 | DPRINT_EXIT(VMBUS); | |
767 | ||
768 | return ret; | |
769 | } | |
770 | ||
771 | /*++ | |
772 | ||
773 | Name: | |
774 | VmbusChannelReleaseUnattachedChannels() | |
775 | ||
776 | Description: | |
777 | Release channels that are unattached/unconnected ie (no drivers associated) | |
778 | ||
779 | --*/ | |
780 | void | |
781 | VmbusChannelReleaseUnattachedChannels( | |
e20f683b | 782 | void |
3e7ee490 HJ |
783 | ) |
784 | { | |
785 | LIST_ENTRY *entry; | |
786 | VMBUS_CHANNEL *channel; | |
787 | VMBUS_CHANNEL *start=NULL; | |
788 | ||
789 | SpinlockAcquire(gVmbusConnection.ChannelLock); | |
790 | ||
791 | while (!IsListEmpty(&gVmbusConnection.ChannelList)) | |
792 | { | |
793 | entry = TOP_LIST_ENTRY(&gVmbusConnection.ChannelList); | |
794 | channel = CONTAINING_RECORD(entry, VMBUS_CHANNEL, ListEntry); | |
795 | ||
796 | if (channel == start) | |
797 | break; | |
798 | ||
799 | if (!channel->DeviceObject->Driver) | |
800 | { | |
801 | REMOVE_ENTRY_LIST(&channel->ListEntry); | |
802 | DPRINT_INFO(VMBUS, "Releasing unattached device object %p", channel->DeviceObject); | |
803 | ||
804 | VmbusChildDeviceRemove(channel->DeviceObject); | |
805 | FreeVmbusChannel(channel); | |
806 | } | |
807 | else | |
808 | { | |
809 | if (!start) | |
810 | { | |
811 | start = channel; | |
812 | } | |
813 | } | |
814 | } | |
815 | ||
816 | SpinlockRelease(gVmbusConnection.ChannelLock); | |
817 | } | |
818 | ||
819 | // eof | |
820 |