Commit | Line | Data |
---|---|---|
3e7ee490 | 1 | /* |
3e7ee490 HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Authors: | |
18 | * Haiyang Zhang <haiyangz@microsoft.com> | |
19 | * Hank Janssen <hjanssen@microsoft.com> | |
20 | * | |
21 | */ | |
a0086dc5 GKH |
22 | #include <linux/kernel.h> |
23 | #include <linux/mm.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
b7c947f0 | 25 | #include <linux/vmalloc.h> |
4983b39a | 26 | #include "osd.h" |
645954c5 | 27 | #include "logging.h" |
72daf320 | 28 | #include "vmbus_private.h" |
3e7ee490 | 29 | |
454f18a9 | 30 | /* The one and only */ |
af248e1f GKH |
31 | struct hv_context gHvContext = { |
32 | .SynICInitialized = false, | |
33 | .HypercallPage = NULL, | |
34 | .SignalEventParam = NULL, | |
35 | .SignalEventBuffer = NULL, | |
3e7ee490 HJ |
36 | }; |
37 | ||
3e189519 | 38 | /* |
0831ad04 GKH |
39 | * HvQueryHypervisorPresence - Query the cpuid for presense of windows hypervisor |
40 | */ | |
41 | static int HvQueryHypervisorPresence(void) | |
3e7ee490 | 42 | { |
0831ad04 GKH |
43 | unsigned int eax; |
44 | unsigned int ebx; | |
45 | unsigned int ecx; | |
46 | unsigned int edx; | |
47 | unsigned int op; | |
3e7ee490 | 48 | |
454f18a9 BP |
49 | eax = 0; |
50 | ebx = 0; | |
51 | ecx = 0; | |
52 | edx = 0; | |
0831ad04 | 53 | op = HvCpuIdFunctionVersionAndFeatures; |
f931a70c | 54 | cpuid(op, &eax, &ebx, &ecx, &edx); |
0831ad04 GKH |
55 | |
56 | return ecx & HV_PRESENT_BIT; | |
3e7ee490 HJ |
57 | } |
58 | ||
3e189519 | 59 | /* |
0831ad04 GKH |
60 | * HvQueryHypervisorInfo - Get version info of the windows hypervisor |
61 | */ | |
62 | static int HvQueryHypervisorInfo(void) | |
63 | { | |
64 | unsigned int eax; | |
65 | unsigned int ebx; | |
66 | unsigned int ecx; | |
67 | unsigned int edx; | |
68 | unsigned int maxLeaf; | |
69 | unsigned int op; | |
3e7ee490 | 70 | |
0831ad04 GKH |
71 | /* |
72 | * Its assumed that this is called after confirming that Viridian | |
73 | * is present. Query id and revision. | |
74 | */ | |
75 | eax = 0; | |
76 | ebx = 0; | |
77 | ecx = 0; | |
78 | edx = 0; | |
79 | op = HvCpuIdFunctionHvVendorAndMaxFunction; | |
80 | cpuid(op, &eax, &ebx, &ecx, &edx); | |
3e7ee490 | 81 | |
0831ad04 GKH |
82 | DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", |
83 | (ebx & 0xFF), | |
84 | ((ebx >> 8) & 0xFF), | |
85 | ((ebx >> 16) & 0xFF), | |
86 | ((ebx >> 24) & 0xFF), | |
87 | (ecx & 0xFF), | |
88 | ((ecx >> 8) & 0xFF), | |
89 | ((ecx >> 16) & 0xFF), | |
90 | ((ecx >> 24) & 0xFF), | |
91 | (edx & 0xFF), | |
92 | ((edx >> 8) & 0xFF), | |
93 | ((edx >> 16) & 0xFF), | |
94 | ((edx >> 24) & 0xFF)); | |
95 | ||
96 | maxLeaf = eax; | |
97 | eax = 0; | |
98 | ebx = 0; | |
99 | ecx = 0; | |
100 | edx = 0; | |
101 | op = HvCpuIdFunctionHvInterface; | |
102 | cpuid(op, &eax, &ebx, &ecx, &edx); | |
3e7ee490 | 103 | |
0831ad04 GKH |
104 | DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", |
105 | (eax & 0xFF), | |
106 | ((eax >> 8) & 0xFF), | |
107 | ((eax >> 16) & 0xFF), | |
108 | ((eax >> 24) & 0xFF)); | |
109 | ||
110 | if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { | |
111 | eax = 0; | |
112 | ebx = 0; | |
113 | ecx = 0; | |
114 | edx = 0; | |
115 | op = HvCpuIdFunctionMsHvVersion; | |
116 | cpuid(op, &eax, &ebx, &ecx, &edx); | |
117 | DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",\ | |
118 | eax, | |
119 | ebx >> 16, | |
120 | ebx & 0xFFFF, | |
121 | ecx, | |
122 | edx >> 24, | |
123 | edx & 0xFFFFFF); | |
124 | } | |
125 | return maxLeaf; | |
126 | } | |
3e7ee490 | 127 | |
3e189519 | 128 | /* |
0831ad04 GKH |
129 | * HvDoHypercall - Invoke the specified hypercall |
130 | */ | |
131 | static u64 HvDoHypercall(u64 Control, void *Input, void *Output) | |
3e7ee490 | 132 | { |
530cf207 | 133 | #ifdef CONFIG_X86_64 |
0831ad04 GKH |
134 | u64 hvStatus = 0; |
135 | u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; | |
136 | u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; | |
137 | volatile void *hypercallPage = gHvContext.HypercallPage; | |
3e7ee490 | 138 | |
0831ad04 GKH |
139 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p " |
140 | "output phys %llx virt %p hypercall %p>", | |
141 | Control, inputAddress, Input, | |
142 | outputAddress, Output, hypercallPage); | |
3e7ee490 | 143 | |
0831ad04 GKH |
144 | __asm__ __volatile__("mov %0, %%r8" : : "r" (outputAddress) : "r8"); |
145 | __asm__ __volatile__("call *%3" : "=a" (hvStatus) : | |
146 | "c" (Control), "d" (inputAddress), | |
147 | "m" (hypercallPage)); | |
3e7ee490 | 148 | |
0831ad04 | 149 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus); |
3e7ee490 | 150 | |
0831ad04 | 151 | return hvStatus; |
3e7ee490 HJ |
152 | |
153 | #else | |
154 | ||
0831ad04 GKH |
155 | u32 controlHi = Control >> 32; |
156 | u32 controlLo = Control & 0xFFFFFFFF; | |
157 | u32 hvStatusHi = 1; | |
158 | u32 hvStatusLo = 1; | |
159 | u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; | |
160 | u32 inputAddressHi = inputAddress >> 32; | |
161 | u32 inputAddressLo = inputAddress & 0xFFFFFFFF; | |
fa56d361 | 162 | u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; |
0831ad04 GKH |
163 | u32 outputAddressHi = outputAddress >> 32; |
164 | u32 outputAddressLo = outputAddress & 0xFFFFFFFF; | |
165 | volatile void *hypercallPage = gHvContext.HypercallPage; | |
3e7ee490 | 166 | |
0831ad04 GKH |
167 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", |
168 | Control, Input, Output); | |
3e7ee490 | 169 | |
0831ad04 GKH |
170 | __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi), |
171 | "=a"(hvStatusLo) : "d" (controlHi), | |
172 | "a" (controlLo), "b" (inputAddressHi), | |
173 | "c" (inputAddressLo), "D"(outputAddressHi), | |
174 | "S"(outputAddressLo), "m" (hypercallPage)); | |
3e7ee490 | 175 | |
0831ad04 GKH |
176 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", |
177 | hvStatusLo | ((u64)hvStatusHi << 32)); | |
3e7ee490 | 178 | |
0831ad04 GKH |
179 | return hvStatusLo | ((u64)hvStatusHi << 32); |
180 | #endif /* !x86_64 */ | |
3e7ee490 HJ |
181 | } |
182 | ||
3e189519 | 183 | /* |
0831ad04 GKH |
184 | * HvInit - Main initialization routine. |
185 | * | |
186 | * This routine must be called before any other routines in here are called | |
187 | */ | |
188 | int HvInit(void) | |
3e7ee490 | 189 | { |
0831ad04 GKH |
190 | int ret = 0; |
191 | int maxLeaf; | |
f80b3d51 | 192 | union hv_x64_msr_hypercall_contents hypercallMsr; |
949cadaa | 193 | void *virtAddr = NULL; |
3e7ee490 | 194 | |
44f357f8 BP |
195 | memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS); |
196 | memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS); | |
3e7ee490 | 197 | |
0831ad04 | 198 | if (!HvQueryHypervisorPresence()) { |
3e7ee490 HJ |
199 | DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); |
200 | goto Cleanup; | |
201 | } | |
202 | ||
0831ad04 GKH |
203 | DPRINT_INFO(VMBUS, |
204 | "Windows hypervisor detected! Retrieving more info..."); | |
3e7ee490 | 205 | |
0831ad04 GKH |
206 | maxLeaf = HvQueryHypervisorInfo(); |
207 | /* HvQueryHypervisorFeatures(maxLeaf); */ | |
3e7ee490 | 208 | |
0831ad04 | 209 | /* |
a73e6b7c | 210 | * We only support running on top of Hyper-V |
0831ad04 | 211 | */ |
a51ed7d6 | 212 | rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId); |
a73e6b7c HJ |
213 | |
214 | if (gHvContext.GuestId != 0) { | |
215 | DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", | |
216 | gHvContext.GuestId); | |
217 | goto Cleanup; | |
3e7ee490 HJ |
218 | } |
219 | ||
a73e6b7c HJ |
220 | /* Write our OS info */ |
221 | wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); | |
222 | gHvContext.GuestId = HV_LINUX_GUEST_ID; | |
223 | ||
454f18a9 | 224 | /* See if the hypercall page is already set */ |
a51ed7d6 | 225 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
3e7ee490 | 226 | |
a73e6b7c HJ |
227 | /* |
228 | * Allocate the hypercall page memory | |
229 | * virtAddr = osd_PageAlloc(1); | |
230 | */ | |
231 | virtAddr = osd_VirtualAllocExec(PAGE_SIZE); | |
3e7ee490 | 232 | |
a73e6b7c HJ |
233 | if (!virtAddr) { |
234 | DPRINT_ERR(VMBUS, | |
235 | "unable to allocate hypercall page!!"); | |
236 | goto Cleanup; | |
237 | } | |
3e7ee490 | 238 | |
a73e6b7c HJ |
239 | hypercallMsr.Enable = 1; |
240 | ||
241 | hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr); | |
242 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
243 | ||
244 | /* Confirm that hypercall page did get setup. */ | |
245 | hypercallMsr.AsUINT64 = 0; | |
246 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
247 | ||
248 | if (!hypercallMsr.Enable) { | |
249 | DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); | |
3e7ee490 HJ |
250 | goto Cleanup; |
251 | } | |
252 | ||
a73e6b7c HJ |
253 | gHvContext.HypercallPage = virtAddr; |
254 | ||
2701f686 GKH |
255 | DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", |
256 | gHvContext.HypercallPage, | |
257 | (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); | |
3e7ee490 | 258 | |
454f18a9 | 259 | /* Setup the global signal event param for the signal event hypercall */ |
0831ad04 GKH |
260 | gHvContext.SignalEventBuffer = |
261 | kmalloc(sizeof(struct hv_input_signal_event_buffer), | |
262 | GFP_KERNEL); | |
3e7ee490 | 263 | if (!gHvContext.SignalEventBuffer) |
3e7ee490 | 264 | goto Cleanup; |
3e7ee490 | 265 | |
0831ad04 GKH |
266 | gHvContext.SignalEventParam = |
267 | (struct hv_input_signal_event *) | |
268 | (ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, | |
269 | HV_HYPERCALL_PARAM_ALIGN)); | |
4d643114 | 270 | gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; |
0831ad04 GKH |
271 | gHvContext.SignalEventParam->ConnectionId.u.Id = |
272 | VMBUS_EVENT_CONNECTION_ID; | |
3e7ee490 HJ |
273 | gHvContext.SignalEventParam->FlagNumber = 0; |
274 | gHvContext.SignalEventParam->RsvdZ = 0; | |
275 | ||
0831ad04 | 276 | return ret; |
3e7ee490 HJ |
277 | |
278 | Cleanup: | |
0831ad04 GKH |
279 | if (virtAddr) { |
280 | if (hypercallMsr.Enable) { | |
3e7ee490 | 281 | hypercallMsr.AsUINT64 = 0; |
a51ed7d6 | 282 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
3e7ee490 HJ |
283 | } |
284 | ||
b7c947f0 | 285 | vfree(virtAddr); |
3e7ee490 HJ |
286 | } |
287 | ret = -1; | |
3e7ee490 HJ |
288 | return ret; |
289 | } | |
290 | ||
3e189519 | 291 | /* |
0831ad04 GKH |
292 | * HvCleanup - Cleanup routine. |
293 | * | |
294 | * This routine is called normally during driver unloading or exiting. | |
295 | */ | |
296 | void HvCleanup(void) | |
3e7ee490 | 297 | { |
f80b3d51 | 298 | union hv_x64_msr_hypercall_contents hypercallMsr; |
3e7ee490 | 299 | |
1e19c054 BP |
300 | kfree(gHvContext.SignalEventBuffer); |
301 | gHvContext.SignalEventBuffer = NULL; | |
302 | gHvContext.SignalEventParam = NULL; | |
3e7ee490 | 303 | |
a73e6b7c HJ |
304 | if (gHvContext.HypercallPage) { |
305 | hypercallMsr.AsUINT64 = 0; | |
306 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); | |
307 | vfree(gHvContext.HypercallPage); | |
308 | gHvContext.HypercallPage = NULL; | |
3e7ee490 | 309 | } |
3e7ee490 HJ |
310 | } |
311 | ||
3e189519 | 312 | /* |
0831ad04 GKH |
313 | * HvPostMessage - Post a message using the hypervisor message IPC. |
314 | * | |
315 | * This involves a hypercall. | |
316 | */ | |
034469e6 GKH |
317 | u16 HvPostMessage(union hv_connection_id connectionId, |
318 | enum hv_message_type messageType, | |
319 | void *payload, size_t payloadSize) | |
3e7ee490 HJ |
320 | { |
321 | struct alignedInput { | |
0831ad04 | 322 | u64 alignment8; |
cba4decd | 323 | struct hv_input_post_message msg; |
3e7ee490 HJ |
324 | }; |
325 | ||
cba4decd | 326 | struct hv_input_post_message *alignedMsg; |
034469e6 | 327 | u16 status; |
c4b0bc94 | 328 | unsigned long addr; |
3e7ee490 HJ |
329 | |
330 | if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) | |
3e7ee490 | 331 | return -1; |
3e7ee490 | 332 | |
0a72f3cf | 333 | addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); |
3e7ee490 | 334 | if (!addr) |
3e7ee490 | 335 | return -1; |
3e7ee490 | 336 | |
0831ad04 GKH |
337 | alignedMsg = (struct hv_input_post_message *) |
338 | (ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); | |
3e7ee490 HJ |
339 | |
340 | alignedMsg->ConnectionId = connectionId; | |
341 | alignedMsg->MessageType = messageType; | |
342 | alignedMsg->PayloadSize = payloadSize; | |
0831ad04 | 343 | memcpy((void *)alignedMsg->Payload, payload, payloadSize); |
3e7ee490 | 344 | |
949cadaa | 345 | status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF; |
3e7ee490 | 346 | |
0831ad04 | 347 | kfree((void *)addr); |
3e7ee490 HJ |
348 | |
349 | return status; | |
350 | } | |
351 | ||
352 | ||
3e189519 | 353 | /* |
0831ad04 GKH |
354 | * HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC. |
355 | * | |
356 | * This involves a hypercall. | |
357 | */ | |
034469e6 | 358 | u16 HvSignalEvent(void) |
3e7ee490 | 359 | { |
034469e6 | 360 | u16 status; |
3e7ee490 | 361 | |
0831ad04 GKH |
362 | status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, |
363 | NULL) & 0xFFFF; | |
3e7ee490 HJ |
364 | return status; |
365 | } | |
366 | ||
3e189519 | 367 | /* |
0831ad04 GKH |
368 | * HvSynicInit - Initialize the Synthethic Interrupt Controller. |
369 | * | |
370 | * If it is already initialized by another entity (ie x2v shim), we need to | |
371 | * retrieve the initialized message and event pages. Otherwise, we create and | |
372 | * initialize the message and event pages. | |
373 | */ | |
7692fd4d | 374 | void HvSynicInit(void *irqarg) |
3e7ee490 | 375 | { |
0831ad04 | 376 | u64 version; |
eacb1b4d GKH |
377 | union hv_synic_simp simp; |
378 | union hv_synic_siefp siefp; | |
379 | union hv_synic_sint sharedSint; | |
380 | union hv_synic_scontrol sctrl; | |
a73e6b7c | 381 | |
7692fd4d GKH |
382 | u32 irqVector = *((u32 *)(irqarg)); |
383 | int cpu = smp_processor_id(); | |
3e7ee490 | 384 | |
83c720ea | 385 | if (!gHvContext.HypercallPage) |
7692fd4d | 386 | return; |
3e7ee490 | 387 | |
454f18a9 | 388 | /* Check the version */ |
a51ed7d6 | 389 | rdmsrl(HV_X64_MSR_SVERSION, version); |
3e7ee490 HJ |
390 | |
391 | DPRINT_INFO(VMBUS, "SynIC version: %llx", version); | |
392 | ||
a73e6b7c | 393 | gHvContext.synICMessagePage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); |
3e7ee490 | 394 | |
a73e6b7c HJ |
395 | if (gHvContext.synICMessagePage[cpu] == NULL) { |
396 | DPRINT_ERR(VMBUS, | |
397 | "unable to allocate SYNIC message page!!"); | |
398 | goto Cleanup; | |
399 | } | |
3e7ee490 | 400 | |
a73e6b7c | 401 | gHvContext.synICEventPage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); |
3e7ee490 | 402 | |
a73e6b7c HJ |
403 | if (gHvContext.synICEventPage[cpu] == NULL) { |
404 | DPRINT_ERR(VMBUS, | |
405 | "unable to allocate SYNIC event page!!"); | |
406 | goto Cleanup; | |
407 | } | |
3e7ee490 | 408 | |
a73e6b7c HJ |
409 | /* Setup the Synic's message page */ |
410 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); | |
411 | simp.SimpEnabled = 1; | |
412 | simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[cpu]) | |
413 | >> PAGE_SHIFT; | |
3e7ee490 | 414 | |
a73e6b7c | 415 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.AsUINT64); |
3e7ee490 | 416 | |
a73e6b7c | 417 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
3e7ee490 | 418 | |
a73e6b7c HJ |
419 | /* Setup the Synic's event page */ |
420 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); | |
421 | siefp.SiefpEnabled = 1; | |
422 | siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[cpu]) | |
423 | >> PAGE_SHIFT; | |
424 | ||
425 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.AsUINT64); | |
426 | ||
427 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); | |
0831ad04 GKH |
428 | |
429 | /* Setup the interception SINT. */ | |
a51ed7d6 | 430 | /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ |
0831ad04 | 431 | /* interceptionSint.AsUINT64); */ |
454f18a9 | 432 | |
0831ad04 | 433 | /* Setup the shared SINT. */ |
a51ed7d6 | 434 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
3e7ee490 HJ |
435 | |
436 | sharedSint.AsUINT64 = 0; | |
454f18a9 BP |
437 | sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ |
438 | sharedSint.Masked = false; | |
439 | sharedSint.AutoEoi = true; | |
3e7ee490 | 440 | |
0831ad04 GKH |
441 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", |
442 | sharedSint.AsUINT64); | |
3e7ee490 | 443 | |
a51ed7d6 | 444 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
3e7ee490 | 445 | |
454f18a9 | 446 | /* Enable the global synic bit */ |
a51ed7d6 | 447 | rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
3e7ee490 HJ |
448 | sctrl.Enable = 1; |
449 | ||
a51ed7d6 | 450 | wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
3e7ee490 | 451 | |
0e727613 | 452 | gHvContext.SynICInitialized = true; |
7692fd4d | 453 | return; |
3e7ee490 HJ |
454 | |
455 | Cleanup: | |
a73e6b7c HJ |
456 | if (gHvContext.synICEventPage[cpu]) |
457 | osd_PageFree(gHvContext.synICEventPage[cpu], 1); | |
3e7ee490 | 458 | |
a73e6b7c HJ |
459 | if (gHvContext.synICMessagePage[cpu]) |
460 | osd_PageFree(gHvContext.synICMessagePage[cpu], 1); | |
7692fd4d | 461 | return; |
3e7ee490 HJ |
462 | } |
463 | ||
3e189519 | 464 | /* |
0831ad04 GKH |
465 | * HvSynicCleanup - Cleanup routine for HvSynicInit(). |
466 | */ | |
7692fd4d | 467 | void HvSynicCleanup(void *arg) |
3e7ee490 | 468 | { |
eacb1b4d GKH |
469 | union hv_synic_sint sharedSint; |
470 | union hv_synic_simp simp; | |
471 | union hv_synic_siefp siefp; | |
7692fd4d | 472 | int cpu = smp_processor_id(); |
3e7ee490 | 473 | |
83c720ea | 474 | if (!gHvContext.SynICInitialized) |
3e7ee490 | 475 | return; |
3e7ee490 | 476 | |
a51ed7d6 | 477 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
3e7ee490 HJ |
478 | |
479 | sharedSint.Masked = 1; | |
480 | ||
7692fd4d | 481 | /* Need to correctly cleanup in the case of SMP!!! */ |
454f18a9 | 482 | /* Disable the interrupt */ |
a51ed7d6 | 483 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
3e7ee490 | 484 | |
a73e6b7c HJ |
485 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
486 | simp.SimpEnabled = 0; | |
487 | simp.BaseSimpGpa = 0; | |
3e7ee490 | 488 | |
a73e6b7c | 489 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
3e7ee490 | 490 | |
a73e6b7c HJ |
491 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
492 | siefp.SiefpEnabled = 0; | |
493 | siefp.BaseSiefpGpa = 0; | |
3e7ee490 | 494 | |
a73e6b7c | 495 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
3e7ee490 | 496 | |
a73e6b7c HJ |
497 | osd_PageFree(gHvContext.synICMessagePage[cpu], 1); |
498 | osd_PageFree(gHvContext.synICEventPage[cpu], 1); | |
3e7ee490 | 499 | } |