Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | 09d50ff | 2009-07-13 17:09:34 -0700 | [diff] [blame] | 25 | #include "include/logging.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 26 | #include "VmbusPrivate.h" |
| 27 | |
| 28 | // |
| 29 | // Globals |
| 30 | // |
| 31 | |
| 32 | // The one and only |
| 33 | HV_CONTEXT gHvContext={ |
| 34 | .SynICInitialized = FALSE, |
| 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 | --*/ |
| 161 | static UINT64 |
| 162 | HvDoHypercall ( |
| 163 | UINT64 Control, |
| 164 | void* Input, |
| 165 | void* Output |
| 166 | ) |
| 167 | { |
Greg Kroah-Hartman | 530cf20 | 2009-07-16 22:31:15 -0700 | [diff] [blame] | 168 | #ifdef CONFIG_X86_64 |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 169 | UINT64 hvStatus=0; |
| 170 | UINT64 inputAddress = (Input)? GetPhysicalAddress(Input) : 0; |
| 171 | UINT64 outputAddress = (Output)? GetPhysicalAddress(Output) : 0; |
| 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 | |
| 191 | UINT32 controlHi = Control >> 32; |
| 192 | UINT32 controlLo = Control & 0xFFFFFFFF; |
| 193 | UINT32 hvStatusHi = 1; |
| 194 | UINT32 hvStatusLo = 1; |
| 195 | UINT64 inputAddress = (Input) ? GetPhysicalAddress(Input) : 0; |
| 196 | UINT32 inputAddressHi = inputAddress >> 32; |
| 197 | UINT32 inputAddressLo = inputAddress & 0xFFFFFFFF; |
| 198 | UINT64 outputAddress = (Output) ?GetPhysicalAddress(Output) : 0; |
| 199 | UINT32 outputAddressHi = outputAddress >> 32; |
| 200 | UINT32 outputAddressLo = outputAddress & 0xFFFFFFFF; |
| 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 | |
| 211 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatusLo | ((UINT64)hvStatusHi << 32)); |
| 212 | |
| 213 | return (hvStatusLo | ((UINT64)hvStatusHi << 32)); |
| 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; |
| 236 | ULONG_PTR physAddr=0; |
| 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 | |
| 303 | DPRINT_INFO(VMBUS, "Hypercall page VA=0x%08x, PA=0x%08x", |
| 304 | (unsigned long)gHvContext.HypercallPage, |
| 305 | (unsigned long)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); |
| 306 | |
| 307 | // Setup the global signal event param for the signal event hypercall |
| 308 | gHvContext.SignalEventBuffer = MemAlloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER)); |
| 309 | if (!gHvContext.SignalEventBuffer) |
| 310 | { |
| 311 | goto Cleanup; |
| 312 | } |
| 313 | |
| 314 | gHvContext.SignalEventParam = (PHV_INPUT_SIGNAL_EVENT)(ALIGN_UP((ULONG_PTR)gHvContext.SignalEventBuffer, HV_HYPERCALL_PARAM_ALIGN)); |
| 315 | gHvContext.SignalEventParam->ConnectionId.AsUINT32 = 0; |
| 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 | { |
| 364 | MemFree(gHvContext.SignalEventBuffer); |
| 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, |
| 399 | PVOID payload, |
| 400 | SIZE_T payloadSize |
| 401 | ) |
| 402 | { |
| 403 | struct alignedInput { |
| 404 | UINT64 alignment8; |
| 405 | HV_INPUT_POST_MESSAGE msg; |
| 406 | }; |
| 407 | |
| 408 | PHV_INPUT_POST_MESSAGE alignedMsg; |
| 409 | HV_STATUS status; |
| 410 | ULONG_PTR addr; |
| 411 | |
| 412 | if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) |
| 413 | { |
| 414 | return -1; |
| 415 | } |
| 416 | |
| 417 | addr = (ULONG_PTR)MemAllocAtomic(sizeof(struct alignedInput)); |
| 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 | |
| 433 | MemFree((void*)addr); |
| 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 ( |
| 474 | UINT32 irqVector |
| 475 | ) |
| 476 | { |
| 477 | UINT64 version; |
| 478 | HV_SYNIC_SIMP simp; |
| 479 | HV_SYNIC_SIEFP siefp; |
| 480 | HV_SYNIC_SINT sharedSint; |
| 481 | HV_SYNIC_SCONTROL sctrl; |
| 482 | UINT64 guestID; |
| 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; |
| 574 | sharedSint.Masked = FALSE; |
| 575 | sharedSint.AutoEoi = TRUE; |
| 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 | |
| 587 | gHvContext.SynICInitialized = TRUE; |
| 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 | --*/ |
| 624 | VOID |
| 625 | HvSynicCleanup( |
| 626 | VOID |
| 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 |