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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 | --*/ | |
bd1de709 | 132 | static 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 | |
bfc30aae | 144 | channel->PollTimer = osd_TimerCreate(VmbusChannelOnTimer, channel); |
3e7ee490 HJ |
145 | if (!channel->PollTimer) |
146 | { | |
8c69f52a | 147 | kfree(channel); |
3e7ee490 HJ |
148 | return NULL; |
149 | } | |
150 | ||
454f18a9 | 151 | /* channel->dataWorkQueue = WorkQueueCreate("data"); */ |
de65a384 | 152 | channel->ControlWQ = create_workqueue("hv_vmbus_ctl"); |
3e7ee490 HJ |
153 | if (!channel->ControlWQ) |
154 | { | |
bfc30aae | 155 | osd_TimerClose(channel->PollTimer); |
8c69f52a | 156 | kfree(channel); |
3e7ee490 HJ |
157 | return NULL; |
158 | } | |
159 | ||
160 | return channel; | |
161 | } | |
162 | ||
163 | /*++ | |
164 | ||
165 | Name: | |
166 | ReleaseVmbusChannel() | |
167 | ||
168 | Description: | |
169 | Release the vmbus channel object itself | |
170 | ||
171 | --*/ | |
172 | static inline void ReleaseVmbusChannel(void* Context) | |
173 | { | |
174 | VMBUS_CHANNEL* channel = (VMBUS_CHANNEL*)Context; | |
175 | ||
176 | DPRINT_ENTER(VMBUS); | |
177 | ||
178 | DPRINT_DBG(VMBUS, "releasing channel (%p)", channel); | |
de65a384 | 179 | destroy_workqueue(channel->ControlWQ); |
3e7ee490 HJ |
180 | DPRINT_DBG(VMBUS, "channel released (%p)", channel); |
181 | ||
8c69f52a | 182 | kfree(channel); |
3e7ee490 HJ |
183 | |
184 | DPRINT_EXIT(VMBUS); | |
185 | } | |
186 | ||
187 | /*++ | |
188 | ||
189 | Name: | |
190 | FreeVmbusChannel() | |
191 | ||
192 | Description: | |
193 | Release the resources used by the vmbus channel object | |
194 | ||
195 | --*/ | |
bd1de709 | 196 | static void FreeVmbusChannel(VMBUS_CHANNEL* Channel) |
3e7ee490 | 197 | { |
bfc30aae | 198 | osd_TimerClose(Channel->PollTimer); |
3e7ee490 | 199 | |
454f18a9 BP |
200 | /* We have to release the channel's workqueue/thread in the vmbus's workqueue/thread context */ |
201 | /* ie we can't destroy ourselves. */ | |
de65a384 BP |
202 | osd_schedule_callback(gVmbusConnection.WorkQueue, ReleaseVmbusChannel, |
203 | (void *)Channel); | |
3e7ee490 HJ |
204 | } |
205 | ||
206 | ||
207 | /*++ | |
208 | ||
209 | Name: | |
210 | VmbusChannelProcessOffer() | |
211 | ||
212 | Description: | |
213 | Process the offer by creating a channel/device associated with this offer | |
214 | ||
215 | --*/ | |
216 | static void | |
217 | VmbusChannelProcessOffer( | |
8282c400 | 218 | void * context |
3e7ee490 HJ |
219 | ) |
220 | { | |
221 | int ret=0; | |
222 | VMBUS_CHANNEL* newChannel=(VMBUS_CHANNEL*)context; | |
223 | LIST_ENTRY* anchor; | |
224 | LIST_ENTRY* curr; | |
0e727613 | 225 | bool fNew = true; |
3e7ee490 | 226 | VMBUS_CHANNEL* channel; |
0f5e44ca | 227 | unsigned long flags; |
3e7ee490 HJ |
228 | |
229 | DPRINT_ENTER(VMBUS); | |
230 | ||
454f18a9 | 231 | /* Make sure this is a new offer */ |
0f5e44ca | 232 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
233 | |
234 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) | |
235 | { | |
236 | channel = CONTAINING_RECORD(curr, VMBUS_CHANNEL, ListEntry); | |
237 | ||
238 | if (!memcmp(&channel->OfferMsg.Offer.InterfaceType, &newChannel->OfferMsg.Offer.InterfaceType,sizeof(GUID)) && | |
239 | !memcmp(&channel->OfferMsg.Offer.InterfaceInstance, &newChannel->OfferMsg.Offer.InterfaceInstance, sizeof(GUID))) | |
240 | { | |
0e727613 | 241 | fNew = false; |
3e7ee490 HJ |
242 | break; |
243 | } | |
244 | } | |
245 | ||
246 | if (fNew) | |
247 | { | |
248 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelList, &newChannel->ListEntry); | |
249 | } | |
0f5e44ca | 250 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
251 | |
252 | if (!fNew) | |
253 | { | |
254 | DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)", newChannel->OfferMsg.ChildRelId); | |
255 | FreeVmbusChannel(newChannel); | |
256 | DPRINT_EXIT(VMBUS); | |
257 | return; | |
258 | } | |
259 | ||
454f18a9 BP |
260 | /* Start the process of binding this offer to the driver */ |
261 | /* We need to set the DeviceObject field before calling VmbusChildDeviceAdd() */ | |
3e7ee490 HJ |
262 | newChannel->DeviceObject = VmbusChildDeviceCreate( |
263 | newChannel->OfferMsg.Offer.InterfaceType, | |
264 | newChannel->OfferMsg.Offer.InterfaceInstance, | |
265 | newChannel); | |
266 | ||
267 | DPRINT_DBG(VMBUS, "child device object allocated - %p", newChannel->DeviceObject); | |
268 | ||
454f18a9 BP |
269 | /* |
270 | * Add the new device to the bus. This will kick off device-driver | |
271 | * binding which eventually invokes the device driver's AddDevice() | |
272 | * method. | |
273 | */ | |
274 | ||
3e7ee490 HJ |
275 | ret = VmbusChildDeviceAdd(newChannel->DeviceObject); |
276 | if (ret != 0) | |
277 | { | |
278 | DPRINT_ERR(VMBUS, "unable to add child device object (relid %d)", | |
279 | newChannel->OfferMsg.ChildRelId); | |
280 | ||
0f5e44ca | 281 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 | 282 | REMOVE_ENTRY_LIST(&newChannel->ListEntry); |
0f5e44ca | 283 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
284 | |
285 | FreeVmbusChannel(newChannel); | |
286 | } | |
287 | else | |
288 | { | |
454f18a9 BP |
289 | /* |
290 | * This state is used to indicate a successful open | |
291 | * so that when we do close the channel normally, we | |
292 | * can cleanup properly | |
293 | */ | |
3e7ee490 HJ |
294 | newChannel->State = CHANNEL_OPEN_STATE; |
295 | } | |
296 | DPRINT_EXIT(VMBUS); | |
297 | } | |
298 | ||
299 | /*++ | |
300 | ||
301 | Name: | |
302 | VmbusChannelProcessRescindOffer() | |
303 | ||
304 | Description: | |
305 | Rescind the offer by initiating a device removal | |
306 | ||
307 | --*/ | |
308 | static void | |
309 | VmbusChannelProcessRescindOffer( | |
8282c400 | 310 | void * context |
3e7ee490 HJ |
311 | ) |
312 | { | |
313 | VMBUS_CHANNEL* channel=(VMBUS_CHANNEL*)context; | |
314 | ||
315 | DPRINT_ENTER(VMBUS); | |
316 | ||
317 | VmbusChildDeviceRemove(channel->DeviceObject); | |
318 | ||
319 | DPRINT_EXIT(VMBUS); | |
320 | } | |
321 | ||
322 | ||
323 | /*++ | |
324 | ||
325 | Name: | |
326 | VmbusChannelOnOffer() | |
327 | ||
328 | Description: | |
329 | Handler for channel offers from vmbus in parent partition. We ignore all offers except | |
330 | network and storage offers. For each network and storage offers, we create a channel object | |
331 | and queue a work item to the channel object to process the offer synchronously | |
332 | ||
333 | --*/ | |
334 | static void | |
335 | VmbusChannelOnOffer( | |
336 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
337 | ) | |
338 | { | |
339 | VMBUS_CHANNEL_OFFER_CHANNEL* offer = (VMBUS_CHANNEL_OFFER_CHANNEL*)hdr; | |
340 | VMBUS_CHANNEL* newChannel; | |
341 | ||
342 | GUID *guidType; | |
343 | GUID *guidInstance; | |
344 | int i; | |
345 | int fSupported=0; | |
346 | ||
347 | DPRINT_ENTER(VMBUS); | |
348 | ||
349 | for (i=0; i<MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) | |
350 | { | |
351 | if (memcmp(&offer->Offer.InterfaceType, &gSupportedDeviceClasses[i], sizeof(GUID)) == 0) | |
352 | { | |
353 | fSupported = 1; | |
354 | break; | |
355 | } | |
356 | } | |
357 | ||
358 | if (!fSupported) | |
359 | { | |
360 | DPRINT_DBG(VMBUS, "Ignoring channel offer notification for child relid %d", offer->ChildRelId); | |
361 | DPRINT_EXIT(VMBUS); | |
362 | ||
363 | return; | |
364 | } | |
365 | ||
366 | guidType = &offer->Offer.InterfaceType; | |
367 | guidInstance = &offer->Offer.InterfaceInstance; | |
368 | ||
369 | DPRINT_INFO(VMBUS, "Channel offer notification - child relid %d monitor id %d allocated %d, " | |
370 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x} " | |
371 | "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}", | |
372 | offer->ChildRelId, | |
373 | offer->MonitorId, | |
374 | offer->MonitorAllocated, | |
375 | 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], | |
376 | 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]); | |
377 | ||
454f18a9 | 378 | /* Allocate the channel object and save this offer. */ |
3e7ee490 HJ |
379 | newChannel = AllocVmbusChannel(); |
380 | if (!newChannel) | |
381 | { | |
382 | DPRINT_ERR(VMBUS, "unable to allocate channel object"); | |
383 | return; | |
384 | } | |
385 | ||
386 | DPRINT_DBG(VMBUS, "channel object allocated - %p", newChannel); | |
387 | ||
388 | memcpy(&newChannel->OfferMsg, offer, sizeof(VMBUS_CHANNEL_OFFER_CHANNEL)); | |
5654e932 GKH |
389 | newChannel->MonitorGroup = (u8)offer->MonitorId / 32; |
390 | newChannel->MonitorBit = (u8)offer->MonitorId % 32; | |
3e7ee490 | 391 | |
454f18a9 | 392 | /* TODO: Make sure the offer comes from our parent partition */ |
de65a384 BP |
393 | osd_schedule_callback(newChannel->ControlWQ, VmbusChannelProcessOffer, |
394 | newChannel); | |
3e7ee490 HJ |
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 | ||
de65a384 BP |
427 | osd_schedule_callback(channel->ControlWQ, |
428 | VmbusChannelProcessRescindOffer, | |
429 | channel); | |
3e7ee490 HJ |
430 | |
431 | DPRINT_EXIT(VMBUS); | |
432 | } | |
433 | ||
434 | ||
435 | /*++ | |
436 | ||
437 | Name: | |
438 | VmbusChannelOnOffersDelivered() | |
439 | ||
440 | Description: | |
441 | This is invoked when all offers have been delivered. | |
442 | Nothing to do here. | |
443 | ||
444 | --*/ | |
445 | static void | |
446 | VmbusChannelOnOffersDelivered( | |
447 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
448 | ) | |
449 | { | |
450 | DPRINT_ENTER(VMBUS); | |
451 | DPRINT_EXIT(VMBUS); | |
452 | } | |
453 | ||
454 | ||
455 | /*++ | |
456 | ||
457 | Name: | |
458 | VmbusChannelOnOpenResult() | |
459 | ||
460 | Description: | |
461 | Open result handler. This is invoked when we received a response | |
462 | to our channel open request. Find the matching request, copy the | |
463 | response and signal the requesting thread. | |
464 | ||
465 | --*/ | |
466 | static void | |
467 | VmbusChannelOnOpenResult( | |
468 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
469 | ) | |
470 | { | |
471 | VMBUS_CHANNEL_OPEN_RESULT* result = (VMBUS_CHANNEL_OPEN_RESULT*)hdr; | |
472 | LIST_ENTRY* anchor; | |
473 | LIST_ENTRY* curr; | |
474 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
475 | VMBUS_CHANNEL_MESSAGE_HEADER* requestHeader; | |
476 | VMBUS_CHANNEL_OPEN_CHANNEL* openMsg; | |
dd0813b6 | 477 | unsigned long flags; |
3e7ee490 HJ |
478 | |
479 | DPRINT_ENTER(VMBUS); | |
480 | ||
481 | DPRINT_DBG(VMBUS, "vmbus open result - %d", result->Status); | |
482 | ||
454f18a9 | 483 | /* Find the open msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 484 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
485 | |
486 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
487 | { | |
488 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
489 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
490 | ||
491 | if (requestHeader->MessageType == ChannelMessageOpenChannel) | |
492 | { | |
493 | openMsg = (VMBUS_CHANNEL_OPEN_CHANNEL*)msgInfo->Msg; | |
494 | if (openMsg->ChildRelId == result->ChildRelId && | |
495 | openMsg->OpenId == result->OpenId) | |
496 | { | |
497 | memcpy(&msgInfo->Response.OpenResult, result, sizeof(VMBUS_CHANNEL_OPEN_RESULT)); | |
bfc30aae | 498 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
499 | break; |
500 | } | |
501 | } | |
502 | } | |
dd0813b6 | 503 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
504 | |
505 | DPRINT_EXIT(VMBUS); | |
506 | } | |
507 | ||
508 | ||
509 | /*++ | |
510 | ||
511 | Name: | |
512 | VmbusChannelOnGpadlCreated() | |
513 | ||
514 | Description: | |
515 | GPADL created handler. This is invoked when we received a response | |
516 | to our gpadl create request. Find the matching request, copy the | |
517 | response and signal the requesting thread. | |
518 | ||
519 | --*/ | |
520 | static void | |
521 | VmbusChannelOnGpadlCreated( | |
522 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
523 | ) | |
524 | { | |
525 | VMBUS_CHANNEL_GPADL_CREATED *gpadlCreated = (VMBUS_CHANNEL_GPADL_CREATED*)hdr; | |
526 | LIST_ENTRY *anchor; | |
527 | LIST_ENTRY *curr; | |
528 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
529 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
530 | VMBUS_CHANNEL_GPADL_HEADER *gpadlHeader; | |
dd0813b6 | 531 | unsigned long flags; |
3e7ee490 HJ |
532 | |
533 | DPRINT_ENTER(VMBUS); | |
534 | ||
535 | DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d", gpadlCreated->CreationStatus); | |
536 | ||
454f18a9 | 537 | /* Find the establish msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 538 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
539 | |
540 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
541 | { | |
542 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
543 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
544 | ||
545 | if (requestHeader->MessageType == ChannelMessageGpadlHeader) | |
546 | { | |
547 | gpadlHeader = (VMBUS_CHANNEL_GPADL_HEADER*)requestHeader; | |
548 | ||
549 | if ((gpadlCreated->ChildRelId == gpadlHeader->ChildRelId) && | |
550 | (gpadlCreated->Gpadl == gpadlHeader->Gpadl)) | |
551 | { | |
552 | memcpy(&msgInfo->Response.GpadlCreated, gpadlCreated, sizeof(VMBUS_CHANNEL_GPADL_CREATED)); | |
bfc30aae | 553 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
554 | break; |
555 | } | |
556 | } | |
557 | } | |
dd0813b6 | 558 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
559 | |
560 | DPRINT_EXIT(VMBUS); | |
561 | } | |
562 | ||
563 | ||
564 | /*++ | |
565 | ||
566 | Name: | |
567 | VmbusChannelOnGpadlTorndown() | |
568 | ||
569 | Description: | |
570 | GPADL torndown handler. This is invoked when we received a response | |
571 | to our gpadl teardown request. Find the matching request, copy the | |
572 | response and signal the requesting thread. | |
573 | ||
574 | --*/ | |
575 | static void | |
576 | VmbusChannelOnGpadlTorndown( | |
577 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
578 | ) | |
579 | { | |
580 | VMBUS_CHANNEL_GPADL_TORNDOWN* gpadlTorndown = (VMBUS_CHANNEL_GPADL_TORNDOWN*)hdr; | |
581 | LIST_ENTRY* anchor; | |
582 | LIST_ENTRY* curr; | |
583 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
584 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
585 | VMBUS_CHANNEL_GPADL_TEARDOWN *gpadlTeardown; | |
dd0813b6 | 586 | unsigned long flags; |
3e7ee490 HJ |
587 | |
588 | DPRINT_ENTER(VMBUS); | |
589 | ||
454f18a9 | 590 | /* Find the open msg, copy the result and signal/unblock the wait event */ |
dd0813b6 | 591 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
592 | |
593 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
594 | { | |
595 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
596 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
597 | ||
598 | if (requestHeader->MessageType == ChannelMessageGpadlTeardown) | |
599 | { | |
600 | gpadlTeardown = (VMBUS_CHANNEL_GPADL_TEARDOWN*)requestHeader; | |
601 | ||
602 | if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl) | |
603 | { | |
604 | memcpy(&msgInfo->Response.GpadlTorndown, gpadlTorndown, sizeof(VMBUS_CHANNEL_GPADL_TORNDOWN)); | |
bfc30aae | 605 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
606 | break; |
607 | } | |
608 | } | |
609 | } | |
dd0813b6 | 610 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
611 | |
612 | DPRINT_EXIT(VMBUS); | |
613 | } | |
614 | ||
615 | ||
616 | /*++ | |
617 | ||
618 | Name: | |
619 | VmbusChannelOnVersionResponse() | |
620 | ||
621 | Description: | |
622 | Version response handler. This is invoked when we received a response | |
623 | to our initiate contact request. Find the matching request, copy the | |
624 | response and signal the requesting thread. | |
625 | ||
626 | --*/ | |
627 | static void | |
628 | VmbusChannelOnVersionResponse( | |
629 | PVMBUS_CHANNEL_MESSAGE_HEADER hdr | |
630 | ) | |
631 | { | |
632 | LIST_ENTRY* anchor; | |
633 | LIST_ENTRY* curr; | |
634 | VMBUS_CHANNEL_MSGINFO *msgInfo; | |
635 | VMBUS_CHANNEL_MESSAGE_HEADER *requestHeader; | |
636 | VMBUS_CHANNEL_INITIATE_CONTACT *initiate; | |
637 | VMBUS_CHANNEL_VERSION_RESPONSE *versionResponse = (VMBUS_CHANNEL_VERSION_RESPONSE*)hdr; | |
dd0813b6 | 638 | unsigned long flags; |
3e7ee490 HJ |
639 | |
640 | DPRINT_ENTER(VMBUS); | |
641 | ||
dd0813b6 | 642 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
643 | |
644 | ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) | |
645 | { | |
646 | msgInfo = (VMBUS_CHANNEL_MSGINFO*) curr; | |
647 | requestHeader = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; | |
648 | ||
649 | if (requestHeader->MessageType == ChannelMessageInitiateContact) | |
650 | { | |
651 | initiate = (VMBUS_CHANNEL_INITIATE_CONTACT*)requestHeader; | |
652 | memcpy(&msgInfo->Response.VersionResponse, versionResponse, sizeof(VMBUS_CHANNEL_VERSION_RESPONSE)); | |
bfc30aae | 653 | osd_WaitEventSet(msgInfo->WaitEvent); |
3e7ee490 HJ |
654 | } |
655 | } | |
dd0813b6 | 656 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
3e7ee490 HJ |
657 | |
658 | DPRINT_EXIT(VMBUS); | |
659 | } | |
660 | ||
661 | ||
662 | /*++ | |
663 | ||
664 | Name: | |
665 | VmbusOnChannelMessage() | |
666 | ||
667 | Description: | |
668 | Handler for channel protocol messages. | |
669 | This is invoked in the vmbus worker thread context. | |
670 | ||
671 | --*/ | |
bd1de709 | 672 | static void |
3e7ee490 HJ |
673 | VmbusOnChannelMessage( |
674 | void *Context | |
675 | ) | |
676 | { | |
677 | HV_MESSAGE *msg=(HV_MESSAGE*)Context; | |
678 | VMBUS_CHANNEL_MESSAGE_HEADER* hdr; | |
679 | int size; | |
680 | ||
681 | DPRINT_ENTER(VMBUS); | |
682 | ||
683 | hdr = (VMBUS_CHANNEL_MESSAGE_HEADER*)msg->u.Payload; | |
684 | size=msg->Header.PayloadSize; | |
685 | ||
686 | DPRINT_DBG(VMBUS, "message type %d size %d", hdr->MessageType, size); | |
687 | ||
688 | if (hdr->MessageType >= ChannelMessageCount) | |
689 | { | |
690 | DPRINT_ERR(VMBUS, "Received invalid channel message type %d size %d", hdr->MessageType, size); | |
04f50c4d GKH |
691 | print_hex_dump_bytes("", DUMP_PREFIX_NONE, |
692 | (unsigned char *)msg->u.Payload, size); | |
8c69f52a | 693 | kfree(msg); |
3e7ee490 HJ |
694 | return; |
695 | } | |
696 | ||
697 | if (gChannelMessageTable[hdr->MessageType].messageHandler) | |
698 | { | |
699 | gChannelMessageTable[hdr->MessageType].messageHandler(hdr); | |
700 | } | |
701 | else | |
702 | { | |
703 | DPRINT_ERR(VMBUS, "Unhandled channel message type %d", hdr->MessageType); | |
704 | } | |
705 | ||
454f18a9 | 706 | /* Free the msg that was allocated in VmbusOnMsgDPC() */ |
8c69f52a | 707 | kfree(msg); |
3e7ee490 HJ |
708 | DPRINT_EXIT(VMBUS); |
709 | } | |
710 | ||
711 | ||
712 | /*++ | |
713 | ||
714 | Name: | |
715 | VmbusChannelRequestOffers() | |
716 | ||
717 | Description: | |
718 | Send a request to get all our pending offers. | |
719 | ||
720 | --*/ | |
bd1de709 | 721 | static int |
3e7ee490 | 722 | VmbusChannelRequestOffers( |
e20f683b | 723 | void |
3e7ee490 HJ |
724 | ) |
725 | { | |
726 | int ret=0; | |
727 | VMBUS_CHANNEL_MESSAGE_HEADER* msg; | |
728 | VMBUS_CHANNEL_MSGINFO* msgInfo; | |
729 | ||
730 | DPRINT_ENTER(VMBUS); | |
731 | ||
e40d37cc | 732 | msgInfo = kmalloc(sizeof(VMBUS_CHANNEL_MSGINFO) + sizeof(VMBUS_CHANNEL_MESSAGE_HEADER), GFP_KERNEL); |
3e7ee490 HJ |
733 | ASSERT(msgInfo != NULL); |
734 | ||
bfc30aae | 735 | msgInfo->WaitEvent = osd_WaitEventCreate(); |
3e7ee490 HJ |
736 | msg = (VMBUS_CHANNEL_MESSAGE_HEADER*)msgInfo->Msg; |
737 | ||
738 | msg->MessageType = ChannelMessageRequestOffers; | |
739 | ||
740 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
741 | INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList, &msgInfo->msgListEntry); | |
742 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
743 | ||
744 | ret = VmbusPostMessage(msg, sizeof(VMBUS_CHANNEL_MESSAGE_HEADER)); | |
745 | if (ret != 0) | |
746 | { | |
747 | DPRINT_ERR(VMBUS, "Unable to request offers - %d", ret); | |
748 | ||
749 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
750 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
751 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
752 | ||
753 | goto Cleanup; | |
754 | } | |
bfc30aae | 755 | /* osd_WaitEventWait(msgInfo->waitEvent); */ |
3e7ee490 HJ |
756 | |
757 | /*SpinlockAcquire(gVmbusConnection.channelMsgLock); | |
758 | REMOVE_ENTRY_LIST(&msgInfo->msgListEntry); | |
759 | SpinlockRelease(gVmbusConnection.channelMsgLock);*/ | |
760 | ||
761 | ||
762 | Cleanup: | |
763 | if (msgInfo) | |
764 | { | |
420beac4 | 765 | kfree(msgInfo->WaitEvent); |
8c69f52a | 766 | kfree(msgInfo); |
3e7ee490 HJ |
767 | } |
768 | ||
769 | DPRINT_EXIT(VMBUS); | |
770 | ||
771 | return ret; | |
772 | } | |
773 | ||
774 | /*++ | |
775 | ||
776 | Name: | |
777 | VmbusChannelReleaseUnattachedChannels() | |
778 | ||
779 | Description: | |
780 | Release channels that are unattached/unconnected ie (no drivers associated) | |
781 | ||
782 | --*/ | |
bd1de709 | 783 | static void |
3e7ee490 | 784 | VmbusChannelReleaseUnattachedChannels( |
e20f683b | 785 | void |
3e7ee490 HJ |
786 | ) |
787 | { | |
788 | LIST_ENTRY *entry; | |
789 | VMBUS_CHANNEL *channel; | |
790 | VMBUS_CHANNEL *start=NULL; | |
0f5e44ca | 791 | unsigned long flags; |
3e7ee490 | 792 | |
0f5e44ca | 793 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
794 | |
795 | while (!IsListEmpty(&gVmbusConnection.ChannelList)) | |
796 | { | |
797 | entry = TOP_LIST_ENTRY(&gVmbusConnection.ChannelList); | |
798 | channel = CONTAINING_RECORD(entry, VMBUS_CHANNEL, ListEntry); | |
799 | ||
800 | if (channel == start) | |
801 | break; | |
802 | ||
803 | if (!channel->DeviceObject->Driver) | |
804 | { | |
805 | REMOVE_ENTRY_LIST(&channel->ListEntry); | |
806 | DPRINT_INFO(VMBUS, "Releasing unattached device object %p", channel->DeviceObject); | |
807 | ||
808 | VmbusChildDeviceRemove(channel->DeviceObject); | |
809 | FreeVmbusChannel(channel); | |
810 | } | |
811 | else | |
812 | { | |
813 | if (!start) | |
814 | { | |
815 | start = channel; | |
816 | } | |
817 | } | |
818 | } | |
819 | ||
0f5e44ca | 820 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
3e7ee490 HJ |
821 | } |
822 | ||
454f18a9 | 823 | /* eof */ |