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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 | 25 | #include "include/logging.h" |
3e7ee490 HJ |
26 | #include "VmbusPrivate.h" |
27 | ||
28 | // | |
29 | // Globals | |
30 | // | |
31 | ||
32 | // The one and only | |
33 | HV_CONTEXT gHvContext={ | |
0e727613 | 34 | .SynICInitialized = false, |
3e7ee490 HJ |
35 | .HypercallPage = NULL, |
36 | .SignalEventParam = NULL, | |
37 | .SignalEventBuffer = NULL, | |
38 | }; | |
39 | ||
40 | ||
41 | /*++ | |
42 | ||
43 | Name: | |
44 | HvQueryHypervisorPresence() | |
45 | ||
46 | Description: | |
47 | Query the cpuid for presense of windows hypervisor | |
48 | ||
49 | --*/ | |
50 | static int | |
51 | HvQueryHypervisorPresence ( | |
52 | void | |
53 | ) | |
54 | { | |
55 | unsigned int eax; | |
56 | unsigned int ebx; | |
57 | unsigned int ecx; | |
58 | unsigned int edx; | |
59 | unsigned int op; | |
60 | ||
61 | eax = 0; | |
62 | ebx = 0; | |
63 | ecx = 0; | |
64 | edx = 0; | |
65 | op = HvCpuIdFunctionVersionAndFeatures; | |
66 | do_cpuid(op, &eax, &ebx, &ecx, &edx); | |
67 | ||
68 | return (ecx & HV_PRESENT_BIT); | |
69 | } | |
70 | ||
71 | ||
72 | /*++ | |
73 | ||
74 | Name: | |
75 | HvQueryHypervisorInfo() | |
76 | ||
77 | Description: | |
78 | Get version info of the windows hypervisor | |
79 | ||
80 | --*/ | |
81 | static int | |
82 | HvQueryHypervisorInfo ( | |
83 | void | |
84 | ) | |
85 | { | |
86 | unsigned int eax; | |
87 | unsigned int ebx; | |
88 | unsigned int ecx; | |
89 | unsigned int edx; | |
90 | unsigned int maxLeaf; | |
91 | unsigned int op; | |
92 | ||
93 | // | |
94 | // Its assumed that this is called after confirming that Viridian is present. | |
95 | // Query id and revision. | |
96 | // | |
97 | ||
98 | eax = 0; | |
99 | ebx = 0; | |
100 | ecx = 0; | |
101 | edx = 0; | |
102 | op = HvCpuIdFunctionHvVendorAndMaxFunction; | |
103 | do_cpuid(op, &eax, &ebx, &ecx, &edx); | |
104 | ||
105 | DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", | |
106 | (ebx & 0xFF), | |
107 | ((ebx >> 8) & 0xFF), | |
108 | ((ebx >> 16) & 0xFF), | |
109 | ((ebx >> 24) & 0xFF), | |
110 | (ecx & 0xFF), | |
111 | ((ecx >> 8) & 0xFF), | |
112 | ((ecx >> 16) & 0xFF), | |
113 | ((ecx >> 24) & 0xFF), | |
114 | (edx & 0xFF), | |
115 | ((edx >> 8) & 0xFF), | |
116 | ((edx >> 16) & 0xFF), | |
117 | ((edx >> 24) & 0xFF)); | |
118 | ||
119 | maxLeaf = eax; | |
120 | eax = 0; | |
121 | ebx = 0; | |
122 | ecx = 0; | |
123 | edx = 0; | |
124 | op = HvCpuIdFunctionHvInterface; | |
125 | do_cpuid(op, &eax, &ebx, &ecx, &edx); | |
126 | ||
127 | DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", | |
128 | (eax & 0xFF), | |
129 | ((eax >> 8) & 0xFF), | |
130 | ((eax >> 16) & 0xFF), | |
131 | ((eax >> 24) & 0xFF)); | |
132 | ||
133 | if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { | |
134 | eax = 0; | |
135 | ebx = 0; | |
136 | ecx = 0; | |
137 | edx = 0; | |
138 | op = HvCpuIdFunctionMsHvVersion; | |
139 | do_cpuid(op, &eax, &ebx, &ecx, &edx); | |
140 | DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d", | |
141 | eax, | |
142 | ebx >> 16, | |
143 | ebx & 0xFFFF, | |
144 | ecx, | |
145 | edx >> 24, | |
146 | edx & 0xFFFFFF); | |
147 | } | |
148 | return maxLeaf; | |
149 | } | |
150 | ||
151 | ||
152 | /*++ | |
153 | ||
154 | Name: | |
155 | HvDoHypercall() | |
156 | ||
157 | Description: | |
158 | Invoke the specified hypercall | |
159 | ||
160 | --*/ | |
59471438 | 161 | static u64 |
3e7ee490 | 162 | HvDoHypercall ( |
59471438 | 163 | u64 Control, |
3e7ee490 HJ |
164 | void* Input, |
165 | void* Output | |
166 | ) | |
167 | { | |
530cf207 | 168 | #ifdef CONFIG_X86_64 |
59471438 GKH |
169 | u64 hvStatus=0; |
170 | u64 inputAddress = (Input)? GetPhysicalAddress(Input) : 0; | |
171 | u64 outputAddress = (Output)? GetPhysicalAddress(Output) : 0; | |
3e7ee490 HJ |
172 | volatile void* hypercallPage = gHvContext.HypercallPage; |
173 | ||
174 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p output phys %llx virt %p hypercall %p>", | |
175 | Control, | |
176 | inputAddress, | |
177 | Input, | |
178 | outputAddress, | |
179 | Output, | |
180 | hypercallPage); | |
181 | ||
182 | __asm__ __volatile__ ("mov %0, %%r8" : : "r" (outputAddress): "r8"); | |
183 | __asm__ __volatile__ ("call *%3" : "=a"(hvStatus): "c" (Control), "d" (inputAddress), "m" (hypercallPage)); | |
184 | ||
185 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus); | |
186 | ||
187 | return hvStatus; | |
188 | ||
189 | #else | |
190 | ||
4d643114 GKH |
191 | u32 controlHi = Control >> 32; |
192 | u32 controlLo = Control & 0xFFFFFFFF; | |
193 | u32 hvStatusHi = 1; | |
194 | u32 hvStatusLo = 1; | |
59471438 | 195 | u64 inputAddress = (Input) ? GetPhysicalAddress(Input) : 0; |
4d643114 GKH |
196 | u32 inputAddressHi = inputAddress >> 32; |
197 | u32 inputAddressLo = inputAddress & 0xFFFFFFFF; | |
59471438 | 198 | u64 outputAddress = (Output) ?GetPhysicalAddress(Output) : 0; |
4d643114 GKH |
199 | u32 outputAddressHi = outputAddress >> 32; |
200 | u32 outputAddressLo = outputAddress & 0xFFFFFFFF; | |
3e7ee490 HJ |
201 | volatile void* hypercallPage = gHvContext.HypercallPage; |
202 | ||
203 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", | |
204 | Control, | |
205 | Input, | |
206 | Output); | |
207 | ||
208 | __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi), "=a"(hvStatusLo) : "d" (controlHi), "a" (controlLo), "b" (inputAddressHi), "c" (inputAddressLo), "D"(outputAddressHi), "S"(outputAddressLo), "m" (hypercallPage)); | |
209 | ||
210 | ||
59471438 | 211 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatusLo | ((u64)hvStatusHi << 32)); |
3e7ee490 | 212 | |
59471438 | 213 | return (hvStatusLo | ((u64)hvStatusHi << 32)); |
3e7ee490 HJ |
214 | #endif // x86_64 |
215 | } | |
216 | ||
217 | /*++ | |
218 | ||
219 | Name: | |
220 | HvInit() | |
221 | ||
222 | Description: | |
223 | Main initialization routine. This routine must be called | |
224 | before any other routines in here are called | |
225 | ||
226 | --*/ | |
227 | static int | |
228 | HvInit ( | |
229 | void | |
230 | ) | |
231 | { | |
232 | int ret=0; | |
233 | int maxLeaf; | |
234 | HV_X64_MSR_HYPERCALL_CONTENTS hypercallMsr; | |
235 | void* virtAddr=0; | |
c4b0bc94 | 236 | unsigned long physAddr=0; |
3e7ee490 HJ |
237 | |
238 | DPRINT_ENTER(VMBUS); | |
239 | ||
240 | memset(gHvContext.synICEventPage, 0, sizeof(HANDLE)*MAX_NUM_CPUS); | |
241 | memset(gHvContext.synICMessagePage, 0, sizeof(HANDLE)*MAX_NUM_CPUS); | |
242 | ||
243 | if (!HvQueryHypervisorPresence()) | |
244 | { | |
245 | DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); | |
246 | goto Cleanup; | |
247 | } | |
248 | ||
249 | DPRINT_INFO(VMBUS, "Windows hypervisor detected! Retrieving more info..."); | |
250 | ||
251 | maxLeaf = HvQueryHypervisorInfo(); | |
252 | //HvQueryHypervisorFeatures(maxLeaf); | |
253 | ||
254 | // Determine if we are running on xenlinux (ie x2v shim) or native linux | |
255 | gHvContext.GuestId = ReadMsr(HV_X64_MSR_GUEST_OS_ID); | |
256 | ||
257 | if (gHvContext.GuestId == 0) | |
258 | { | |
259 | // Write our OS info | |
260 | WriteMsr(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); | |
261 | ||
262 | gHvContext.GuestId = HV_LINUX_GUEST_ID; | |
263 | } | |
264 | ||
265 | // See if the hypercall page is already set | |
266 | hypercallMsr.AsUINT64 = ReadMsr(HV_X64_MSR_HYPERCALL); | |
267 | ||
268 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) | |
269 | { | |
270 | // Allocate the hypercall page memory | |
271 | //virtAddr = PageAlloc(1); | |
272 | virtAddr = VirtualAllocExec(PAGE_SIZE); | |
273 | ||
274 | if (!virtAddr) | |
275 | { | |
276 | DPRINT_ERR(VMBUS, "unable to allocate hypercall page!!"); | |
277 | goto Cleanup; | |
278 | } | |
279 | ||
280 | hypercallMsr.Enable = 1; | |
281 | //hypercallMsr.GuestPhysicalAddress = Logical2PhysicalAddr(virtAddr) >> PAGE_SHIFT; | |
282 | hypercallMsr.GuestPhysicalAddress = Virtual2Physical(virtAddr) >> PAGE_SHIFT; | |
283 | WriteMsr(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
284 | ||
285 | // Confirm that hypercall page did get setup. | |
286 | hypercallMsr.AsUINT64 = 0; | |
287 | hypercallMsr.AsUINT64 = ReadMsr(HV_X64_MSR_HYPERCALL); | |
288 | ||
289 | if (!hypercallMsr.Enable) | |
290 | { | |
291 | DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); | |
292 | goto Cleanup; | |
293 | } | |
294 | ||
295 | gHvContext.HypercallPage = virtAddr; | |
296 | } | |
297 | else | |
298 | { | |
299 | DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", gHvContext.GuestId); | |
300 | goto Cleanup; | |
301 | } | |
302 | ||
2701f686 GKH |
303 | DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", |
304 | gHvContext.HypercallPage, | |
305 | (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); | |
3e7ee490 HJ |
306 | |
307 | // Setup the global signal event param for the signal event hypercall | |
e40d37cc | 308 | gHvContext.SignalEventBuffer = kmalloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER), GFP_KERNEL); |
3e7ee490 HJ |
309 | if (!gHvContext.SignalEventBuffer) |
310 | { | |
311 | goto Cleanup; | |
312 | } | |
313 | ||
c4b0bc94 | 314 | gHvContext.SignalEventParam = (PHV_INPUT_SIGNAL_EVENT)(ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, HV_HYPERCALL_PARAM_ALIGN)); |
4d643114 | 315 | gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; |
3e7ee490 HJ |
316 | gHvContext.SignalEventParam->ConnectionId.u.Id = VMBUS_EVENT_CONNECTION_ID; |
317 | gHvContext.SignalEventParam->FlagNumber = 0; | |
318 | gHvContext.SignalEventParam->RsvdZ = 0; | |
319 | ||
320 | //DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); | |
321 | ||
322 | DPRINT_EXIT(VMBUS); | |
323 | ||
324 | return ret; | |
325 | ||
326 | Cleanup: | |
327 | if (virtAddr) | |
328 | { | |
329 | if (hypercallMsr.Enable) | |
330 | { | |
331 | hypercallMsr.AsUINT64 = 0; | |
332 | WriteMsr(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
333 | } | |
334 | ||
335 | VirtualFree(virtAddr); | |
336 | } | |
337 | ret = -1; | |
338 | DPRINT_EXIT(VMBUS); | |
339 | ||
340 | return ret; | |
341 | } | |
342 | ||
343 | ||
344 | /*++ | |
345 | ||
346 | Name: | |
347 | HvCleanup() | |
348 | ||
349 | Description: | |
350 | Cleanup routine. This routine is called normally during driver unloading or exiting. | |
351 | ||
352 | --*/ | |
353 | void | |
354 | HvCleanup ( | |
355 | void | |
356 | ) | |
357 | { | |
358 | HV_X64_MSR_HYPERCALL_CONTENTS hypercallMsr; | |
359 | ||
360 | DPRINT_ENTER(VMBUS); | |
361 | ||
362 | if (gHvContext.SignalEventBuffer) | |
363 | { | |
8c69f52a | 364 | kfree(gHvContext.SignalEventBuffer); |
3e7ee490 HJ |
365 | gHvContext.SignalEventBuffer = NULL; |
366 | gHvContext.SignalEventParam = NULL; | |
367 | } | |
368 | ||
369 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) | |
370 | { | |
371 | if (gHvContext.HypercallPage) | |
372 | { | |
373 | hypercallMsr.AsUINT64 = 0; | |
374 | WriteMsr(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
375 | VirtualFree(gHvContext.HypercallPage); | |
376 | gHvContext.HypercallPage = NULL; | |
377 | } | |
378 | } | |
379 | ||
380 | DPRINT_EXIT(VMBUS); | |
381 | ||
382 | } | |
383 | ||
384 | ||
385 | /*++ | |
386 | ||
387 | Name: | |
388 | HvPostMessage() | |
389 | ||
390 | Description: | |
391 | Post a message using the hypervisor message IPC. This | |
392 | involves a hypercall. | |
393 | ||
394 | --*/ | |
395 | HV_STATUS | |
396 | HvPostMessage( | |
397 | HV_CONNECTION_ID connectionId, | |
398 | HV_MESSAGE_TYPE messageType, | |
8282c400 | 399 | void * payload, |
45635d97 | 400 | size_t payloadSize |
3e7ee490 HJ |
401 | ) |
402 | { | |
403 | struct alignedInput { | |
59471438 | 404 | u64 alignment8; |
3e7ee490 HJ |
405 | HV_INPUT_POST_MESSAGE msg; |
406 | }; | |
407 | ||
408 | PHV_INPUT_POST_MESSAGE alignedMsg; | |
409 | HV_STATUS status; | |
c4b0bc94 | 410 | unsigned long addr; |
3e7ee490 HJ |
411 | |
412 | if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) | |
413 | { | |
414 | return -1; | |
415 | } | |
416 | ||
0a72f3cf | 417 | addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); |
3e7ee490 HJ |
418 | |
419 | if (!addr) | |
420 | { | |
421 | return -1; | |
422 | } | |
423 | ||
424 | alignedMsg = (PHV_INPUT_POST_MESSAGE)(ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); | |
425 | ||
426 | alignedMsg->ConnectionId = connectionId; | |
427 | alignedMsg->MessageType = messageType; | |
428 | alignedMsg->PayloadSize = payloadSize; | |
429 | memcpy((void*)alignedMsg->Payload, payload, payloadSize); | |
430 | ||
431 | status = HvDoHypercall(HvCallPostMessage, alignedMsg, 0) & 0xFFFF; | |
432 | ||
8c69f52a | 433 | kfree((void*)addr); |
3e7ee490 HJ |
434 | |
435 | return status; | |
436 | } | |
437 | ||
438 | ||
439 | /*++ | |
440 | ||
441 | Name: | |
442 | HvSignalEvent() | |
443 | ||
444 | Description: | |
445 | Signal an event on the specified connection using the hypervisor event IPC. This | |
446 | involves a hypercall. | |
447 | ||
448 | --*/ | |
449 | HV_STATUS | |
450 | HvSignalEvent( | |
451 | ) | |
452 | { | |
453 | HV_STATUS status; | |
454 | ||
455 | status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, 0) & 0xFFFF; | |
456 | ||
457 | return status; | |
458 | } | |
459 | ||
460 | ||
461 | /*++ | |
462 | ||
463 | Name: | |
464 | HvSynicInit() | |
465 | ||
466 | Description: | |
467 | Initialize the Synthethic Interrupt Controller. If it is already initialized by | |
468 | another entity (ie x2v shim), we need to retrieve the initialized message and event pages. | |
469 | Otherwise, we create and initialize the message and event pages. | |
470 | ||
471 | --*/ | |
472 | int | |
473 | HvSynicInit ( | |
4d643114 | 474 | u32 irqVector |
3e7ee490 HJ |
475 | ) |
476 | { | |
59471438 | 477 | u64 version; |
3e7ee490 HJ |
478 | HV_SYNIC_SIMP simp; |
479 | HV_SYNIC_SIEFP siefp; | |
480 | HV_SYNIC_SINT sharedSint; | |
481 | HV_SYNIC_SCONTROL sctrl; | |
59471438 | 482 | u64 guestID; |
3e7ee490 HJ |
483 | int ret=0; |
484 | ||
485 | DPRINT_ENTER(VMBUS); | |
486 | ||
487 | if (!gHvContext.HypercallPage) | |
488 | { | |
489 | DPRINT_EXIT(VMBUS); | |
490 | return ret; | |
491 | } | |
492 | ||
493 | // Check the version | |
494 | version = ReadMsr(HV_X64_MSR_SVERSION); | |
495 | ||
496 | DPRINT_INFO(VMBUS, "SynIC version: %llx", version); | |
497 | ||
498 | // TODO: Handle SMP | |
499 | if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID) | |
500 | { | |
501 | DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since it is already set."); | |
502 | ||
503 | simp.AsUINT64 = ReadMsr(HV_X64_MSR_SIMP); | |
504 | siefp.AsUINT64 = ReadMsr(HV_X64_MSR_SIEFP); | |
505 | ||
506 | DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx", simp.AsUINT64, siefp.AsUINT64); | |
507 | ||
508 | // Determine if we are running on xenlinux (ie x2v shim) or native linux | |
509 | guestID = ReadMsr(HV_X64_MSR_GUEST_OS_ID); | |
510 | ||
511 | if (guestID == HV_LINUX_GUEST_ID) | |
512 | { | |
513 | gHvContext.synICMessagePage[0] = GetVirtualAddress(simp.BaseSimpGpa << PAGE_SHIFT); | |
514 | gHvContext.synICEventPage[0] = GetVirtualAddress(siefp.BaseSiefpGpa << PAGE_SHIFT); | |
515 | } | |
516 | else | |
517 | { | |
518 | DPRINT_ERR(VMBUS, "unknown guest id!!"); | |
519 | goto Cleanup; | |
520 | } | |
521 | DPRINT_DBG(VMBUS, "MAPPED: Simp: %p, Sifep: %p", gHvContext.synICMessagePage[0], gHvContext.synICEventPage[0]); | |
522 | } | |
523 | else | |
524 | { | |
525 | gHvContext.synICMessagePage[0] = PageAlloc(1); | |
526 | if (gHvContext.synICMessagePage[0] == NULL) | |
527 | { | |
528 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC message page!!"); | |
529 | goto Cleanup; | |
530 | } | |
531 | ||
532 | gHvContext.synICEventPage[0] = PageAlloc(1); | |
533 | if (gHvContext.synICEventPage[0] == NULL) | |
534 | { | |
535 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC event page!!"); | |
536 | goto Cleanup; | |
537 | } | |
538 | ||
539 | // | |
540 | // Setup the Synic's message page | |
541 | // | |
542 | simp.AsUINT64 = ReadMsr(HV_X64_MSR_SIMP); | |
543 | simp.SimpEnabled = 1; | |
544 | simp.BaseSimpGpa = GetPhysicalAddress(gHvContext.synICMessagePage[0]) >> PAGE_SHIFT; | |
545 | ||
546 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.AsUINT64); | |
547 | ||
548 | WriteMsr(HV_X64_MSR_SIMP, simp.AsUINT64); | |
549 | ||
550 | // | |
551 | // Setup the Synic's event page | |
552 | // | |
553 | siefp.AsUINT64 = ReadMsr(HV_X64_MSR_SIEFP); | |
554 | siefp.SiefpEnabled = 1; | |
555 | siefp.BaseSiefpGpa = GetPhysicalAddress(gHvContext.synICEventPage[0]) >> PAGE_SHIFT; | |
556 | ||
557 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.AsUINT64); | |
558 | ||
559 | WriteMsr(HV_X64_MSR_SIEFP, siefp.AsUINT64); | |
560 | } | |
561 | // | |
562 | // Setup the interception SINT. | |
563 | // | |
564 | //WriteMsr((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), | |
565 | // interceptionSint.AsUINT64); | |
566 | ||
567 | // | |
568 | // Setup the shared SINT. | |
569 | // | |
570 | sharedSint.AsUINT64 = ReadMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT); | |
571 | ||
572 | sharedSint.AsUINT64 = 0; | |
573 | sharedSint.Vector = irqVector; //HV_SHARED_SINT_IDT_VECTOR + 0x20; | |
0e727613 GKH |
574 | sharedSint.Masked = false; |
575 | sharedSint.AutoEoi = true; | |
3e7ee490 HJ |
576 | |
577 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", sharedSint.AsUINT64); | |
578 | ||
579 | WriteMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); | |
580 | ||
581 | // Enable the global synic bit | |
582 | sctrl.AsUINT64 = ReadMsr(HV_X64_MSR_SCONTROL); | |
583 | sctrl.Enable = 1; | |
584 | ||
585 | WriteMsr(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); | |
586 | ||
0e727613 | 587 | gHvContext.SynICInitialized = true; |
3e7ee490 HJ |
588 | |
589 | DPRINT_EXIT(VMBUS); | |
590 | ||
591 | return ret; | |
592 | ||
593 | Cleanup: | |
594 | ret = -1; | |
595 | ||
596 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) | |
597 | { | |
598 | if (gHvContext.synICEventPage[0]) | |
599 | { | |
600 | PageFree(gHvContext.synICEventPage[0],1); | |
601 | } | |
602 | ||
603 | if (gHvContext.synICMessagePage[0]) | |
604 | { | |
605 | PageFree(gHvContext.synICMessagePage[0], 1); | |
606 | } | |
607 | } | |
608 | ||
609 | DPRINT_EXIT(VMBUS); | |
610 | ||
611 | return ret; | |
612 | ||
613 | } | |
614 | ||
615 | /*++ | |
616 | ||
617 | Name: | |
618 | HvSynicCleanup() | |
619 | ||
620 | Description: | |
621 | Cleanup routine for HvSynicInit(). | |
622 | ||
623 | --*/ | |
e20f683b | 624 | void |
3e7ee490 | 625 | HvSynicCleanup( |
e20f683b | 626 | void |
3e7ee490 HJ |
627 | ) |
628 | { | |
629 | HV_SYNIC_SINT sharedSint; | |
630 | HV_SYNIC_SIMP simp; | |
631 | HV_SYNIC_SIEFP siefp; | |
632 | ||
633 | DPRINT_ENTER(VMBUS); | |
634 | ||
635 | if (!gHvContext.SynICInitialized) | |
636 | { | |
637 | DPRINT_EXIT(VMBUS); | |
638 | return; | |
639 | } | |
640 | ||
641 | sharedSint.AsUINT64 = ReadMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT); | |
642 | ||
643 | sharedSint.Masked = 1; | |
644 | ||
645 | // Disable the interrupt | |
646 | WriteMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); | |
647 | ||
648 | // Disable and free the resources only if we are running as native linux | |
649 | // since in xenlinux, we are sharing the resources with the x2v shim | |
650 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) | |
651 | { | |
652 | simp.AsUINT64 = ReadMsr(HV_X64_MSR_SIMP); | |
653 | simp.SimpEnabled = 0; | |
654 | simp.BaseSimpGpa = 0; | |
655 | ||
656 | WriteMsr(HV_X64_MSR_SIMP, simp.AsUINT64); | |
657 | ||
658 | siefp.AsUINT64 = ReadMsr(HV_X64_MSR_SIEFP); | |
659 | siefp.SiefpEnabled = 0; | |
660 | siefp.BaseSiefpGpa = 0; | |
661 | ||
662 | WriteMsr(HV_X64_MSR_SIEFP, siefp.AsUINT64); | |
663 | ||
664 | PageFree(gHvContext.synICMessagePage[0], 1); | |
665 | PageFree(gHvContext.synICEventPage[0], 1); | |
666 | } | |
667 | ||
668 | DPRINT_EXIT(VMBUS); | |
669 | } | |
670 | ||
671 | ||
672 | // eof |