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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 | ||
454f18a9 | 30 | /* Data types */ |
3e7ee490 HJ |
31 | |
32 | typedef void (*PFN_CHANNEL_MESSAGE_HANDLER)(VMBUS_CHANNEL_MESSAGE_HEADER* msg); | |
33 | ||
34 | typedef struct _VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY { | |
35 | VMBUS_CHANNEL_MESSAGE_TYPE messageType; | |
36 | PFN_CHANNEL_MESSAGE_HANDLER messageHandler; | |
37 | } VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY; | |
38 | ||
454f18a9 | 39 | /* Internal routines */ |
3e7ee490 HJ |
40 | |
41 | static void | |
42 | VmbusChannelOnOffer( | |
43 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
44 | ); | |
45 | static void | |
46 | VmbusChannelOnOpenResult( | |
47 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
48 | ); | |
49 | ||
50 | static void | |
51 | VmbusChannelOnOfferRescind( | |
52 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
53 | ); | |
54 | ||
55 | static void | |
56 | VmbusChannelOnGpadlCreated( | |
57 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
58 | ); | |
59 | ||
60 | static void | |
61 | VmbusChannelOnGpadlTorndown( | |
62 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
63 | ); | |
64 | ||
65 | static void | |
66 | VmbusChannelOnOffersDelivered( | |
67 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
68 | ); | |
69 | ||
70 | static void | |
71 | VmbusChannelOnVersionResponse( | |
72 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
73 | ); | |
74 | ||
75 | static void | |
76 | VmbusChannelProcessOffer( | |
8282c400 | 77 | void * context |
3e7ee490 HJ |
78 | ); |
79 | ||
80 | static void | |
81 | VmbusChannelProcessRescindOffer( | |
8282c400 | 82 | void * context |
3e7ee490 HJ |
83 | ); |
84 | ||
85 | ||
454f18a9 | 86 | /* Globals */ |
3e7ee490 HJ |
87 | |
88 | #define MAX_NUM_DEVICE_CLASSES_SUPPORTED 4 | |
89 | ||
bd1de709 | 90 | static const GUID gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPORTED]= { |
454f18a9 BP |
91 | /* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */ |
92 | {.Data = {0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f}},/* Storage - SCSI */ | |
93 | /* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */ | |
94 | {.Data = {0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E}}, /* Network */ | |
95 | /* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */ | |
96 | {.Data = {0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c, 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A}}, /* Input */ | |
97 | /* {32412632-86cb-44a2-9b5c-50d1417354f5} */ | |
98 | {.Data = {0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5}}, /* IDE */ | |
3e7ee490 HJ |
99 | |
100 | }; | |
101 | ||
454f18a9 | 102 | /* Channel message dispatch table */ |
bd1de709 | 103 | static VMBUS_CHANNEL_MESSAGE_TABLE_ENTRY gChannelMessageTable[ChannelMessageCount]= { |
3e7ee490 HJ |
104 | {ChannelMessageInvalid, NULL}, |
105 | {ChannelMessageOfferChannel, VmbusChannelOnOffer}, | |
106 | {ChannelMessageRescindChannelOffer, VmbusChannelOnOfferRescind}, | |
107 | {ChannelMessageRequestOffers, NULL}, | |
108 | {ChannelMessageAllOffersDelivered, VmbusChannelOnOffersDelivered}, | |
109 | {ChannelMessageOpenChannel, NULL}, | |
110 | {ChannelMessageOpenChannelResult, VmbusChannelOnOpenResult}, | |
111 | {ChannelMessageCloseChannel, NULL}, | |
112 | {ChannelMessageGpadlHeader, NULL}, | |
113 | {ChannelMessageGpadlBody, NULL}, | |
114 | {ChannelMessageGpadlCreated, VmbusChannelOnGpadlCreated}, | |
115 | {ChannelMessageGpadlTeardown, NULL}, | |
116 | {ChannelMessageGpadlTorndown, VmbusChannelOnGpadlTorndown}, | |
117 | {ChannelMessageRelIdReleased, NULL}, | |
118 | {ChannelMessageInitiateContact, NULL}, | |
119 | {ChannelMessageVersionResponse, VmbusChannelOnVersionResponse}, | |
120 | {ChannelMessageUnload, NULL}, | |
121 | }; | |
122 | ||
123 | /*++ | |
124 | ||
125 | Name: | |
126 | AllocVmbusChannel() | |
127 | ||
128 | Description: | |
129 | Allocate and initialize a vmbus channel object | |
130 | ||
131 | --*/ | |
b239549c | 132 | VMBUS_CHANNEL* AllocVmbusChannel(void) |
3e7ee490 HJ |
133 | { |
134 | VMBUS_CHANNEL* channel; | |
135 | ||
0a72f3cf | 136 | channel = kzalloc(sizeof(VMBUS_CHANNEL), GFP_ATOMIC); |
3e7ee490 HJ |
137 | if (!channel) |
138 | { | |
139 | return NULL; | |
140 | } | |
141 | ||
54411c42 | 142 | spin_lock_init(&channel->inbound_lock); |
3e7ee490 | 143 | |
c8a429a4 GKH |
144 | init_timer(&channel->poll_timer); |
145 | channel->poll_timer.data = (unsigned long)channel; | |
146 | channel->poll_timer.function = VmbusChannelOnTimer; | |
3e7ee490 | 147 | |
454f18a9 | 148 | /* channel->dataWorkQueue = WorkQueueCreate("data"); */ |
de65a384 | 149 | channel->ControlWQ = create_workqueue("hv_vmbus_ctl"); |
3e7ee490 HJ |
150 | if (!channel->ControlWQ) |
151 | { | |
8c69f52a | 152 | kfree(channel); |
3e7ee490 HJ |
153 | return NULL; |
154 | } | |
155 | ||
156 | return channel; | |
157 | } | |
158 | ||
159 | /*++ | |
160 | ||
161 | Name: | |
162 | ReleaseVmbusChannel() | |
163 | ||
164 | Description: | |
165 | Release the vmbus channel object itself | |
166 | ||
167 | --*/ | |
168 | static inline void ReleaseVmbusChannel(void* Context) | |
169 | { | |
170 | VMBUS_CHANNEL* channel = (VMBUS_CHANNEL*)Context; | |
171 | ||
172 | DPRINT_ENTER(VMBUS); | |
173 | ||
174 | DPRINT_DBG(VMBUS, "releasing channel (%p)", channel); | |
de65a384 | 175 | destroy_workqueue(channel->ControlWQ); |
3e7ee490 HJ |
176 | DPRINT_DBG(VMBUS, "channel released (%p)", channel); |
177 | ||
8c69f52a | 178 | kfree(channel); |
3e7ee490 HJ |
179 | |
180 | DPRINT_EXIT(VMBUS); | |
181 | } | |
182 | ||
183 | /*++ | |
184 | ||
185 | Name: | |
186 | FreeVmbusChannel() | |
187 | ||
188 | Description: | |
189 | Release the resources used by the vmbus channel object | |
190 | ||
191 | --*/ | |
b239549c | 192 | void FreeVmbusChannel(VMBUS_CHANNEL* Channel) |
3e7ee490 | 193 | { |
c8a429a4 | 194 | del_timer(&Channel->poll_timer); |
3e7ee490 | 195 | |
454f18a9 BP |
196 | /* We have to release the channel's workqueue/thread in the vmbus's workqueue/thread context */ |
197 | /* ie we can't destroy ourselves. */ | |
de65a384 BP |
198 | osd_schedule_callback(gVmbusConnection.WorkQueue, ReleaseVmbusChannel, |
199 | (void *)Channel); | |
3e7ee490 HJ |
200 | } |
201 | ||
202 | ||
203 | /*++ | |
204 | ||
205 | Name: | |
206 | VmbusChannelProcessOffer() | |
207 | ||
208 | Description: | |
209 | Process the offer by creating a channel/device associated with this offer | |
210 | ||
211 | --*/ | |
212 | static void | |
213 | VmbusChannelProcessOffer( | |
8282c400 | 214 | void * context |
3e7ee490 HJ |
215 | ) |
216 | { | |
217 | int ret=0; | |
218 | VMBUS_CHANNEL* newChannel=(VMBUS_CHANNEL*)context; | |
219 | LIST_ENTRY* anchor; | |
220 | LIST_ENTRY* curr; | |
0e727613 | 221 | bool fNew = true; |
3e7ee490 | 222 | VMBUS_CHANNEL* channel; |
0f5e44ca | 223 | unsigned long flags; |
3e7ee490 HJ |
224 | |
225 | DPRINT_ENTER(VMBUS); | |
226 | ||
454f18a9 | 227 | /* Make sure this is a new offer */ |
0f5e44ca | 228 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
229 | |
230 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) | |
231 | { | |
232 | channel = CONTAINING_RECORD(curr, VMBUS_CHANNEL, ListEntry); | |
233 | ||
234 | if (!memcmp(&channel->OfferMsg.Offer.InterfaceType, &newChannel->OfferMsg.Offer.InterfaceType,sizeof(GUID)) && | |
235 | !memcmp(&channel->OfferMsg.Offer.InterfaceInstance, &newChannel->OfferMsg.Offer.InterfaceInstance, sizeof(GUID))) | |
236 | { | |
0e727613 | 237 | fNew = false; |
3e7ee490 HJ |
238 | break; |
239 | } | |
240 | } | |
241 | ||
242 | if (fNew) | |
243 | { | |
244 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelList, &newChannel->ListEntry); | |
245 | } | |
0f5e44ca | 246 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
247 | |
248 | if (!fNew) | |
249 | { | |
250 | DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)", newChannel->OfferMsg.ChildRelId); | |
251 | FreeVmbusChannel(newChannel); | |
252 | DPRINT_EXIT(VMBUS); | |
253 | return; | |
254 | } | |
255 | ||
454f18a9 BP |
256 | /* Start the process of binding this offer to the driver */ |
257 | /* We need to set the DeviceObject field before calling VmbusChildDeviceAdd() */ | |
3e7ee490 HJ |
258 | newChannel->DeviceObject = VmbusChildDeviceCreate( |
259 | newChannel->OfferMsg.Offer.InterfaceType, | |
260 | newChannel->OfferMsg.Offer.InterfaceInstance, | |
261 | newChannel); | |
262 | ||
263 | DPRINT_DBG(VMBUS, "child device object allocated - %p", newChannel->DeviceObject); | |
264 | ||
454f18a9 BP |
265 | /* |
266 | * Add the new device to the bus. This will kick off device-driver | |
267 | * binding which eventually invokes the device driver's AddDevice() | |
268 | * method. | |
269 | */ | |
270 | ||
3e7ee490 HJ |
271 | ret = VmbusChildDeviceAdd(newChannel->DeviceObject); |
272 | if (ret != 0) | |
273 | { | |
274 | DPRINT_ERR(VMBUS, "unable to add child device object (relid %d)", | |
275 | newChannel->OfferMsg.ChildRelId); | |
276 | ||
0f5e44ca | 277 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 | 278 | REMOVE_ENTRY_LIST(&newChannel->ListEntry); |
0f5e44ca | 279 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
280 | |
281 | FreeVmbusChannel(newChannel); | |
282 | } | |
283 | else | |
284 | { | |
454f18a9 BP |
285 | /* |
286 | * This state is used to indicate a successful open | |
287 | * so that when we do close the channel normally, we | |
288 | * can cleanup properly | |
289 | */ | |
3e7ee490 HJ |
290 | newChannel->State = CHANNEL_OPEN_STATE; |
291 | } | |
292 | DPRINT_EXIT(VMBUS); | |
293 | } | |
294 | ||
295 | /*++ | |
296 | ||
297 | Name: | |
298 | VmbusChannelProcessRescindOffer() | |
299 | ||
300 | Description: | |
301 | Rescind the offer by initiating a device removal | |
302 | ||
303 | --*/ | |
304 | static void | |
305 | VmbusChannelProcessRescindOffer( | |
8282c400 | 306 | void * context |
3e7ee490 HJ |
307 | ) |
308 | { | |
309 | VMBUS_CHANNEL* channel=(VMBUS_CHANNEL*)context; | |
310 | ||
311 | DPRINT_ENTER(VMBUS); | |
312 | ||
313 | VmbusChildDeviceRemove(channel->DeviceObject); | |
314 | ||
315 | DPRINT_EXIT(VMBUS); | |
316 | } | |
317 | ||
318 | ||
319 | /*++ | |
320 | ||
321 | Name: | |
322 | VmbusChannelOnOffer() | |
323 | ||
324 | Description: | |
325 | Handler for channel offers from vmbus in parent partition. We ignore all offers except | |
326 | network and storage offers. For each network and storage offers, we create a channel object | |
327 | and queue a work item to the channel object to process the offer synchronously | |
328 | ||
329 | --*/ | |
330 | static void | |
331 | VmbusChannelOnOffer( | |
332 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
333 | ) | |
334 | { | |
335 | VMBUS_CHANNEL_OFFER_CHANNEL* offer = (VMBUS_CHANNEL_OFFER_CHANNEL*)hdr; | |
336 | VMBUS_CHANNEL* newChannel; | |
337 | ||
338 | GUID *guidType; | |
339 | GUID *guidInstance; | |
340 | int i; | |
341 | int fSupported=0; | |
342 | ||
343 | DPRINT_ENTER(VMBUS); | |
344 | ||
345 | for (i=0; i<MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) | |
346 | { | |
347 | if (memcmp(&offer->Offer.InterfaceType, &gSupportedDeviceClasses[i], sizeof(GUID)) == 0) | |
348 | { | |
349 | fSupported = 1; | |
350 | break; | |
351 | } | |
352 | } | |
353 | ||
354 | if (!fSupported) | |
355 | { | |
356 | DPRINT_DBG(VMBUS, "Ignoring channel offer notification for child relid %d", offer->ChildRelId); | |
357 | DPRINT_EXIT(VMBUS); | |
358 | ||
359 | return; | |
360 | } | |
361 | ||
362 | guidType = &offer->Offer.InterfaceType; | |
363 | guidInstance = &offer->Offer.InterfaceInstance; | |
364 | ||
365 | DPRINT_INFO(VMBUS, "Channel offer notification - child relid %d monitor id %d allocated %d, " | |
366 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x} " | |
367 | "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}", | |
368 | offer->ChildRelId, | |
369 | offer->MonitorId, | |
370 | offer->MonitorAllocated, | |
371 | 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], | |
372 | 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]); | |
373 | ||
454f18a9 | 374 | /* Allocate the channel object and save this offer. */ |
3e7ee490 HJ |
375 | newChannel = AllocVmbusChannel(); |
376 | if (!newChannel) | |
377 | { | |
378 | DPRINT_ERR(VMBUS, "unable to allocate channel object"); | |
379 | return; | |
380 | } | |
381 | ||
382 | DPRINT_DBG(VMBUS, "channel object allocated - %p", newChannel); | |
383 | ||
384 | memcpy(&newChannel->OfferMsg, offer, sizeof(VMBUS_CHANNEL_OFFER_CHANNEL)); | |
5654e932 GKH |
385 | newChannel->MonitorGroup = (u8)offer->MonitorId / 32; |
386 | newChannel->MonitorBit = (u8)offer->MonitorId % 32; | |
3e7ee490 | 387 | |
454f18a9 | 388 | /* TODO: Make sure the offer comes from our parent partition */ |
de65a384 BP |
389 | osd_schedule_callback(newChannel->ControlWQ, VmbusChannelProcessOffer, |
390 | newChannel); | |
3e7ee490 HJ |
391 | |
392 | DPRINT_EXIT(VMBUS); | |
393 | } | |
394 | ||
395 | ||
396 | /*++ | |
397 | ||
398 | Name: | |
399 | VmbusChannelOnOfferRescind() | |
400 | ||
401 | Description: | |
402 | Rescind offer handler. We queue a work item to process this offer | |
403 | synchronously | |
404 | ||
405 | --*/ | |
406 | static void | |
407 | VmbusChannelOnOfferRescind( | |
408 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
409 | ) | |
410 | { | |
411 | VMBUS_CHANNEL_RESCIND_OFFER* rescind = (VMBUS_CHANNEL_RESCIND_OFFER*)hdr; | |
412 | VMBUS_CHANNEL* channel; | |
413 | ||
414 | DPRINT_ENTER(VMBUS); | |
415 | ||
416 | channel = GetChannelFromRelId(rescind->ChildRelId); | |
417 | if (channel == NULL) | |
418 | { | |
419 | DPRINT_DBG(VMBUS, "channel not found for relId %d", rescind->ChildRelId); | |
420 | return; | |
421 | } | |
422 | ||
de65a384 BP |
423 | osd_schedule_callback(channel->ControlWQ, |
424 | VmbusChannelProcessRescindOffer, | |
425 | channel); | |
3e7ee490 HJ |
426 | |
427 | DPRINT_EXIT(VMBUS); | |
428 | } | |
429 | ||
430 | ||
431 | /*++ | |
432 | ||
433 | Name: | |
434 | VmbusChannelOnOffersDelivered() | |
435 | ||
436 | Description: | |
437 | This is invoked when all offers have been delivered. | |
438 | Nothing to do here. | |
439 | ||
440 | --*/ | |
441 | static void | |
442 | VmbusChannelOnOffersDelivered( | |
443 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
444 | ) | |
445 | { | |
446 | DPRINT_ENTER(VMBUS); | |
447 | DPRINT_EXIT(VMBUS); | |
448 | } | |
449 | ||
450 | ||
451 | /*++ | |
452 | ||
453 | Name: | |
454 | VmbusChannelOnOpenResult() | |
455 | ||
456 | Description: | |
457 | Open result handler. This is invoked when we received a response | |
458 | to our channel open request. Find the matching request, copy the | |
459 | response and signal the requesting thread. | |
460 | ||
461 | --*/ | |
462 | static void | |
463 | VmbusChannelOnOpenResult( | |
464 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
465 | ) | |
466 | { | |
467 | VMBUS_CHANNEL_OPEN_RESULT* result = (VMBUS_CHANNEL_OPEN_RESULT*)hdr; | |
468 | LIST_ENTRY* anchor; | |
469 | LIST_ENTRY* curr; | |
470 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
471 | VMBUS_CHANNEL_MESSAGE_HEADER* requestHeader; | |
472 | VMBUS_CHANNEL_OPEN_CHANNEL* openMsg; | |
dd0813b6 | 473 | unsigned long flags; |
3e7ee490 HJ |
474 | |
475 | DPRINT_ENTER(VMBUS); | |
476 | ||
477 | DPRINT_DBG(VMBUS, "vmbus open result - %d", result->Status); | |
478 | ||
454f18a9 | 479 | /* Find the open msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 480 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
481 | |
482 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
483 | { | |
484 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
485 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
486 | ||
487 | if (requestHeader->MessageType == ChannelMessageOpenChannel) | |
488 | { | |
489 | openMsg = (VMBUS_CHANNEL_OPEN_CHANNEL*)msgInfo->Msg; | |
490 | if (openMsg->ChildRelId == result->ChildRelId && | |
491 | openMsg->OpenId == result->OpenId) | |
492 | { | |
493 | memcpy(&msgInfo->Response.OpenResult, result, sizeof(VMBUS_CHANNEL_OPEN_RESULT)); | |
bfc30aae | 494 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
495 | break; |
496 | } | |
497 | } | |
498 | } | |
dd0813b6 | 499 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
500 | |
501 | DPRINT_EXIT(VMBUS); | |
502 | } | |
503 | ||
504 | ||
505 | /*++ | |
506 | ||
507 | Name: | |
508 | VmbusChannelOnGpadlCreated() | |
509 | ||
510 | Description: | |
511 | GPADL created handler. This is invoked when we received a response | |
512 | to our gpadl create request. Find the matching request, copy the | |
513 | response and signal the requesting thread. | |
514 | ||
515 | --*/ | |
516 | static void | |
517 | VmbusChannelOnGpadlCreated( | |
518 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
519 | ) | |
520 | { | |
521 | VMBUS_CHANNEL_GPADL_CREATED *gpadlCreated = (VMBUS_CHANNEL_GPADL_CREATED*)hdr; | |
522 | LIST_ENTRY *anchor; | |
523 | LIST_ENTRY *curr; | |
524 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
525 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
526 | VMBUS_CHANNEL_GPADL_HEADER *gpadlHeader; | |
dd0813b6 | 527 | unsigned long flags; |
3e7ee490 HJ |
528 | |
529 | DPRINT_ENTER(VMBUS); | |
530 | ||
531 | DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d", gpadlCreated->CreationStatus); | |
532 | ||
454f18a9 | 533 | /* Find the establish msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 534 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
535 | |
536 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
537 | { | |
538 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
539 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
540 | ||
541 | if (requestHeader->MessageType == ChannelMessageGpadlHeader) | |
542 | { | |
543 | gpadlHeader = (VMBUS_CHANNEL_GPADL_HEADER*)requestHeader; | |
544 | ||
545 | if ((gpadlCreated->ChildRelId == gpadlHeader->ChildRelId) && | |
546 | (gpadlCreated->Gpadl == gpadlHeader->Gpadl)) | |
547 | { | |
548 | memcpy(&msgInfo->Response.GpadlCreated, gpadlCreated, sizeof(VMBUS_CHANNEL_GPADL_CREATED)); | |
bfc30aae | 549 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
550 | break; |
551 | } | |
552 | } | |
553 | } | |
dd0813b6 | 554 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
555 | |
556 | DPRINT_EXIT(VMBUS); | |
557 | } | |
558 | ||
559 | ||
560 | /*++ | |
561 | ||
562 | Name: | |
563 | VmbusChannelOnGpadlTorndown() | |
564 | ||
565 | Description: | |
566 | GPADL torndown handler. This is invoked when we received a response | |
567 | to our gpadl teardown request. Find the matching request, copy the | |
568 | response and signal the requesting thread. | |
569 | ||
570 | --*/ | |
571 | static void | |
572 | VmbusChannelOnGpadlTorndown( | |
573 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
574 | ) | |
575 | { | |
576 | VMBUS_CHANNEL_GPADL_TORNDOWN* gpadlTorndown = (VMBUS_CHANNEL_GPADL_TORNDOWN*)hdr; | |
577 | LIST_ENTRY* anchor; | |
578 | LIST_ENTRY* curr; | |
579 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
580 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
581 | VMBUS_CHANNEL_GPADL_TEARDOWN *gpadlTeardown; | |
dd0813b6 | 582 | unsigned long flags; |
3e7ee490 HJ |
583 | |
584 | DPRINT_ENTER(VMBUS); | |
585 | ||
454f18a9 | 586 | /* Find the open msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 587 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
588 | |
589 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
590 | { | |
591 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
592 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
593 | ||
594 | if (requestHeader->MessageType == ChannelMessageGpadlTeardown) | |
595 | { | |
596 | gpadlTeardown = (VMBUS_CHANNEL_GPADL_TEARDOWN*)requestHeader; | |
597 | ||
598 | if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl) | |
599 | { | |
600 | memcpy(&msgInfo->Response.GpadlTorndown, gpadlTorndown, sizeof(VMBUS_CHANNEL_GPADL_TORNDOWN)); | |
bfc30aae | 601 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
602 | break; |
603 | } | |
604 | } | |
605 | } | |
dd0813b6 | 606 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
607 | |
608 | DPRINT_EXIT(VMBUS); | |
609 | } | |
610 | ||
611 | ||
612 | /*++ | |
613 | ||
614 | Name: | |
615 | VmbusChannelOnVersionResponse() | |
616 | ||
617 | Description: | |
618 | Version response handler. This is invoked when we received a response | |
619 | to our initiate contact request. Find the matching request, copy the | |
620 | response and signal the requesting thread. | |
621 | ||
622 | --*/ | |
623 | static void | |
624 | VmbusChannelOnVersionResponse( | |
625 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
626 | ) | |
627 | { | |
628 | LIST_ENTRY* anchor; | |
629 | LIST_ENTRY* curr; | |
630 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
631 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
632 | VMBUS_CHANNEL_INITIATE_CONTACT *initiate; | |
633 | VMBUS_CHANNEL_VERSION_RESPONSE *versionResponse = (VMBUS_CHANNEL_VERSION_RESPONSE*)hdr; | |
dd0813b6 | 634 | unsigned long flags; |
3e7ee490 HJ |
635 | |
636 | DPRINT_ENTER(VMBUS); | |
637 | ||
dd0813b6 | 638 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
639 | |
640 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
641 | { | |
642 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
643 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
644 | ||
645 | if (requestHeader->MessageType == ChannelMessageInitiateContact) | |
646 | { | |
647 | initiate = (VMBUS_CHANNEL_INITIATE_CONTACT*)requestHeader; | |
648 | memcpy(&msgInfo->Response.VersionResponse, versionResponse, sizeof(VMBUS_CHANNEL_VERSION_RESPONSE)); | |
bfc30aae | 649 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
650 | } |
651 | } | |
dd0813b6 | 652 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
653 | |
654 | DPRINT_EXIT(VMBUS); | |
655 | } | |
656 | ||
657 | ||
658 | /*++ | |
659 | ||
660 | Name: | |
661 | VmbusOnChannelMessage() | |
662 | ||
663 | Description: | |
664 | Handler for channel protocol messages. | |
665 | This is invoked in the vmbus worker thread context. | |
666 | ||
667 | --*/ | |
b239549c | 668 | void VmbusOnChannelMessage(void *Context) |
3e7ee490 HJ |
669 | { |
670 | HV_MESSAGE *msg=(HV_MESSAGE*)Context; | |
671 | VMBUS_CHANNEL_MESSAGE_HEADER* hdr; | |
672 | int size; | |
673 | ||
674 | DPRINT_ENTER(VMBUS); | |
675 | ||
676 | hdr = (VMBUS_CHANNEL_MESSAGE_HEADER*)msg->u.Payload; | |
677 | size=msg->Header.PayloadSize; | |
678 | ||
679 | DPRINT_DBG(VMBUS, "message type %d size %d", hdr->MessageType, size); | |
680 | ||
681 | if (hdr->MessageType >= ChannelMessageCount) | |
682 | { | |
683 | DPRINT_ERR(VMBUS, "Received invalid channel message type %d size %d", hdr->MessageType, size); | |
04f50c4d GKH |
684 | print_hex_dump_bytes("", DUMP_PREFIX_NONE, |
685 | (unsigned char *)msg->u.Payload, size); | |
8c69f52a | 686 | kfree(msg); |
3e7ee490 HJ |
687 | return; |
688 | } | |
689 | ||
690 | if (gChannelMessageTable[hdr->MessageType].messageHandler) | |
691 | { | |
692 | gChannelMessageTable[hdr->MessageType].messageHandler(hdr); | |
693 | } | |
694 | else | |
695 | { | |
696 | DPRINT_ERR(VMBUS, "Unhandled channel message type %d", hdr->MessageType); | |
697 | } | |
698 | ||
454f18a9 | 699 | /* Free the msg that was allocated in VmbusOnMsgDPC() */ |
8c69f52a | 700 | kfree(msg); |
3e7ee490 HJ |
701 | DPRINT_EXIT(VMBUS); |
702 | } | |
703 | ||
704 | ||
705 | /*++ | |
706 | ||
707 | Name: | |
708 | VmbusChannelRequestOffers() | |
709 | ||
710 | Description: | |
711 | Send a request to get all our pending offers. | |
712 | ||
713 | --*/ | |
b239549c | 714 | int VmbusChannelRequestOffers(void) |
3e7ee490 HJ |
715 | { |
716 | int ret=0; | |
717 | VMBUS_CHANNEL_MESSAGE_HEADER* msg; | |
718 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
719 | ||
720 | DPRINT_ENTER(VMBUS); | |
721 | ||
e40d37cc | 722 | msgInfo = kmalloc(sizeof(VMBUS_CHANNEL_MSGINFO) + sizeof(VMBUS_CHANNEL_MESSAGE_HEADER), GFP_KERNEL); |
3e7ee490 HJ |
723 | ASSERT(msgInfo != NULL); |
724 | ||
bfc30aae | 725 | msgInfo->WaitEvent = osd_WaitEventCreate(); |
3e7ee490 HJ |
726 | msg = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; |
727 | ||
728 | msg->MessageType = ChannelMessageRequestOffers; | |
729 | ||
730 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
731 | INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList, &msgInfo->msgListEntry); | |
732 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
733 | ||
734 | ret = VmbusPostMessage(msg, sizeof(VMBUS_CHANNEL_MESSAGE_HEADER)); | |
735 | if (ret != 0) | |
736 | { | |
737 | DPRINT_ERR(VMBUS, "Unable to request offers - %d", ret); | |
738 | ||
739 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
740 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
741 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
742 | ||
743 | goto Cleanup; | |
744 | } | |
bfc30aae | 745 | /* osd_WaitEventWait(msgInfo->waitEvent); */ |
3e7ee490 HJ |
746 | |
747 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
748 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
749 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
750 | ||
751 | ||
752 | Cleanup: | |
753 | if (msgInfo) | |
754 | { | |
420beac4 | 755 | kfree(msgInfo->WaitEvent); |
8c69f52a | 756 | kfree(msgInfo); |
3e7ee490 HJ |
757 | } |
758 | ||
759 | DPRINT_EXIT(VMBUS); | |
760 | ||
761 | return ret; | |
762 | } | |
763 | ||
764 | /*++ | |
765 | ||
766 | Name: | |
767 | VmbusChannelReleaseUnattachedChannels() | |
768 | ||
769 | Description: | |
770 | Release channels that are unattached/unconnected ie (no drivers associated) | |
771 | ||
772 | --*/ | |
b239549c | 773 | void VmbusChannelReleaseUnattachedChannels(void) |
3e7ee490 HJ |
774 | { |
775 | LIST_ENTRY *entry; | |
776 | VMBUS_CHANNEL *channel; | |
777 | VMBUS_CHANNEL *start=NULL; | |
0f5e44ca | 778 | unsigned long flags; |
3e7ee490 | 779 | |
0f5e44ca | 780 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
781 | |
782 | while (!IsListEmpty(&gVmbusConnection.ChannelList)) | |
783 | { | |
784 | entry = TOP_LIST_ENTRY(&gVmbusConnection.ChannelList); | |
785 | channel = CONTAINING_RECORD(entry, VMBUS_CHANNEL, ListEntry); | |
786 | ||
787 | if (channel == start) | |
788 | break; | |
789 | ||
790 | if (!channel->DeviceObject->Driver) | |
791 | { | |
792 | REMOVE_ENTRY_LIST(&channel->ListEntry); | |
793 | DPRINT_INFO(VMBUS, "Releasing unattached device object %p", channel->DeviceObject); | |
794 | ||
795 | VmbusChildDeviceRemove(channel->DeviceObject); | |
796 | FreeVmbusChannel(channel); | |
797 | } | |
798 | else | |
799 | { | |
800 | if (!start) | |
801 | { | |
802 | start = channel; | |
803 | } | |
804 | } | |
805 | } | |
806 | ||
0f5e44ca | 807 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
808 | } |
809 | ||
454f18a9 | 810 | /* eof */ |