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 | |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 24 | #include <linux/vmalloc.h> |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 25 | #include <asm/io.h> |
Greg Kroah-Hartman | 09d50ff | 2009-07-13 17:09:34 -0700 | [diff] [blame] | 26 | #include "include/logging.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 27 | #include "VmbusPrivate.h" |
| 28 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 29 | /* Globals */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 30 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 31 | /* The one and only */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 32 | HV_CONTEXT gHvContext={ |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 33 | .SynICInitialized = false, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 34 | .HypercallPage = NULL, |
| 35 | .SignalEventParam = NULL, |
| 36 | .SignalEventBuffer = NULL, |
| 37 | }; |
| 38 | |
| 39 | |
| 40 | /*++ |
| 41 | |
| 42 | Name: |
| 43 | HvQueryHypervisorPresence() |
| 44 | |
| 45 | Description: |
| 46 | Query the cpuid for presense of windows hypervisor |
| 47 | |
| 48 | --*/ |
| 49 | static int |
| 50 | HvQueryHypervisorPresence ( |
| 51 | void |
| 52 | ) |
| 53 | { |
| 54 | unsigned int eax; |
| 55 | unsigned int ebx; |
| 56 | unsigned int ecx; |
| 57 | unsigned int edx; |
| 58 | unsigned int op; |
| 59 | |
| 60 | eax = 0; |
| 61 | ebx = 0; |
| 62 | ecx = 0; |
| 63 | edx = 0; |
| 64 | op = HvCpuIdFunctionVersionAndFeatures; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 65 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 66 | |
| 67 | return (ecx & HV_PRESENT_BIT); |
| 68 | } |
| 69 | |
| 70 | |
| 71 | /*++ |
| 72 | |
| 73 | Name: |
| 74 | HvQueryHypervisorInfo() |
| 75 | |
| 76 | Description: |
| 77 | Get version info of the windows hypervisor |
| 78 | |
| 79 | --*/ |
| 80 | static int |
| 81 | HvQueryHypervisorInfo ( |
| 82 | void |
| 83 | ) |
| 84 | { |
| 85 | unsigned int eax; |
| 86 | unsigned int ebx; |
| 87 | unsigned int ecx; |
| 88 | unsigned int edx; |
| 89 | unsigned int maxLeaf; |
| 90 | unsigned int op; |
| 91 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 92 | /* |
| 93 | * Its assumed that this is called after confirming that Viridian |
| 94 | * is present. Query id and revision. |
| 95 | */ |
| 96 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 97 | |
| 98 | eax = 0; |
| 99 | ebx = 0; |
| 100 | ecx = 0; |
| 101 | edx = 0; |
| 102 | op = HvCpuIdFunctionHvVendorAndMaxFunction; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 103 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 104 | |
| 105 | DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 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)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 118 | |
| 119 | maxLeaf = eax; |
| 120 | eax = 0; |
| 121 | ebx = 0; |
| 122 | ecx = 0; |
| 123 | edx = 0; |
| 124 | op = HvCpuIdFunctionHvInterface; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 125 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 126 | |
| 127 | DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 128 | (eax & 0xFF), |
| 129 | ((eax >> 8) & 0xFF), |
| 130 | ((eax >> 16) & 0xFF), |
| 131 | ((eax >> 24) & 0xFF)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 132 | |
| 133 | if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 134 | eax = 0; |
| 135 | ebx = 0; |
| 136 | ecx = 0; |
| 137 | edx = 0; |
| 138 | op = HvCpuIdFunctionMsHvVersion; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 139 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 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); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 147 | } |
| 148 | return maxLeaf; |
| 149 | } |
| 150 | |
| 151 | |
| 152 | /*++ |
| 153 | |
| 154 | Name: |
| 155 | HvDoHypercall() |
| 156 | |
| 157 | Description: |
| 158 | Invoke the specified hypercall |
| 159 | |
| 160 | --*/ |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 161 | static u64 |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 162 | HvDoHypercall ( |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 163 | u64 Control, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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 |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 169 | u64 hvStatus=0; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 170 | u64 inputAddress = (Input)? virt_to_phys(Input) : 0; |
| 171 | u64 outputAddress = (Output)? virt_to_phys(Output) : 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 191 | u32 controlHi = Control >> 32; |
| 192 | u32 controlLo = Control & 0xFFFFFFFF; |
| 193 | u32 hvStatusHi = 1; |
| 194 | u32 hvStatusLo = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 195 | u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 196 | u32 inputAddressHi = inputAddress >> 32; |
| 197 | u32 inputAddressLo = inputAddress & 0xFFFFFFFF; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 198 | u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 199 | u32 outputAddressHi = outputAddress >> 32; |
| 200 | u32 outputAddressLo = outputAddress & 0xFFFFFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 211 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatusLo | ((u64)hvStatusHi << 32)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 212 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 213 | return (hvStatusLo | ((u64)hvStatusHi << 32)); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 214 | #endif /* x86_64 */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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; |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 235 | void *virtAddr = NULL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 236 | |
| 237 | DPRINT_ENTER(VMBUS); |
| 238 | |
Bill Pemberton | 44f357f | 2009-07-28 13:46:26 -0400 | [diff] [blame] | 239 | memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS); |
| 240 | memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 241 | |
| 242 | if (!HvQueryHypervisorPresence()) |
| 243 | { |
| 244 | DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); |
| 245 | goto Cleanup; |
| 246 | } |
| 247 | |
| 248 | DPRINT_INFO(VMBUS, "Windows hypervisor detected! Retrieving more info..."); |
| 249 | |
| 250 | maxLeaf = HvQueryHypervisorInfo(); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 251 | /* HvQueryHypervisorFeatures(maxLeaf); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 252 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 253 | /* Determine if we are running on xenlinux (ie x2v shim) or native linux */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 254 | rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 255 | if (gHvContext.GuestId == 0) |
| 256 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 257 | /* Write our OS info */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 258 | wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 259 | |
| 260 | gHvContext.GuestId = HV_LINUX_GUEST_ID; |
| 261 | } |
| 262 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 263 | /* See if the hypercall page is already set */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 264 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 265 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 266 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 267 | /* Allocate the hypercall page memory */ |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 268 | /* virtAddr = osd_PageAlloc(1); */ |
| 269 | virtAddr = osd_VirtualAllocExec(PAGE_SIZE); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 270 | |
| 271 | if (!virtAddr) |
| 272 | { |
| 273 | DPRINT_ERR(VMBUS, "unable to allocate hypercall page!!"); |
| 274 | goto Cleanup; |
| 275 | } |
| 276 | |
| 277 | hypercallMsr.Enable = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 278 | /* hypercallMsr.GuestPhysicalAddress = virt_to_phys(virtAddr) >> PAGE_SHIFT; */ |
| 279 | hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr); |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 280 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 281 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 282 | /* Confirm that hypercall page did get setup. */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 283 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 284 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 285 | if (!hypercallMsr.Enable) |
| 286 | { |
| 287 | DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); |
| 288 | goto Cleanup; |
| 289 | } |
| 290 | |
| 291 | gHvContext.HypercallPage = virtAddr; |
| 292 | } |
| 293 | else |
| 294 | { |
| 295 | DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", gHvContext.GuestId); |
| 296 | goto Cleanup; |
| 297 | } |
| 298 | |
Greg Kroah-Hartman | 2701f68 | 2009-07-16 12:36:37 -0700 | [diff] [blame] | 299 | DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", |
| 300 | gHvContext.HypercallPage, |
| 301 | (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 302 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 303 | /* Setup the global signal event param for the signal event hypercall */ |
Greg Kroah-Hartman | e40d37c | 2009-07-15 12:47:22 -0700 | [diff] [blame] | 304 | gHvContext.SignalEventBuffer = kmalloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER), GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 305 | if (!gHvContext.SignalEventBuffer) |
| 306 | { |
| 307 | goto Cleanup; |
| 308 | } |
| 309 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 310 | gHvContext.SignalEventParam = (PHV_INPUT_SIGNAL_EVENT)(ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, HV_HYPERCALL_PARAM_ALIGN)); |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 311 | gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 312 | gHvContext.SignalEventParam->ConnectionId.u.Id = VMBUS_EVENT_CONNECTION_ID; |
| 313 | gHvContext.SignalEventParam->FlagNumber = 0; |
| 314 | gHvContext.SignalEventParam->RsvdZ = 0; |
| 315 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 316 | /* DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 317 | |
| 318 | DPRINT_EXIT(VMBUS); |
| 319 | |
| 320 | return ret; |
| 321 | |
| 322 | Cleanup: |
| 323 | if (virtAddr) |
| 324 | { |
| 325 | if (hypercallMsr.Enable) |
| 326 | { |
| 327 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 328 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 331 | vfree(virtAddr); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 332 | } |
| 333 | ret = -1; |
| 334 | DPRINT_EXIT(VMBUS); |
| 335 | |
| 336 | return ret; |
| 337 | } |
| 338 | |
| 339 | |
| 340 | /*++ |
| 341 | |
| 342 | Name: |
| 343 | HvCleanup() |
| 344 | |
| 345 | Description: |
| 346 | Cleanup routine. This routine is called normally during driver unloading or exiting. |
| 347 | |
| 348 | --*/ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 349 | static void |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 350 | HvCleanup ( |
| 351 | void |
| 352 | ) |
| 353 | { |
| 354 | HV_X64_MSR_HYPERCALL_CONTENTS hypercallMsr; |
| 355 | |
| 356 | DPRINT_ENTER(VMBUS); |
| 357 | |
| 358 | if (gHvContext.SignalEventBuffer) |
| 359 | { |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 360 | kfree(gHvContext.SignalEventBuffer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 361 | gHvContext.SignalEventBuffer = NULL; |
| 362 | gHvContext.SignalEventParam = NULL; |
| 363 | } |
| 364 | |
| 365 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 366 | { |
| 367 | if (gHvContext.HypercallPage) |
| 368 | { |
| 369 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 370 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 371 | vfree(gHvContext.HypercallPage); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 372 | gHvContext.HypercallPage = NULL; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | DPRINT_EXIT(VMBUS); |
| 377 | |
| 378 | } |
| 379 | |
| 380 | |
| 381 | /*++ |
| 382 | |
| 383 | Name: |
| 384 | HvPostMessage() |
| 385 | |
| 386 | Description: |
| 387 | Post a message using the hypervisor message IPC. This |
| 388 | involves a hypercall. |
| 389 | |
| 390 | --*/ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 391 | static HV_STATUS |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 392 | HvPostMessage( |
| 393 | HV_CONNECTION_ID connectionId, |
| 394 | HV_MESSAGE_TYPE messageType, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 395 | void * payload, |
Greg Kroah-Hartman | 45635d9 | 2009-07-14 15:14:20 -0700 | [diff] [blame] | 396 | size_t payloadSize |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 397 | ) |
| 398 | { |
| 399 | struct alignedInput { |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 400 | u64 alignment8; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 401 | HV_INPUT_POST_MESSAGE msg; |
| 402 | }; |
| 403 | |
| 404 | PHV_INPUT_POST_MESSAGE alignedMsg; |
| 405 | HV_STATUS status; |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 406 | unsigned long addr; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 407 | |
| 408 | if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) |
| 409 | { |
| 410 | return -1; |
| 411 | } |
| 412 | |
Greg Kroah-Hartman | 0a72f3c | 2009-07-15 12:48:01 -0700 | [diff] [blame] | 413 | addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 414 | |
| 415 | if (!addr) |
| 416 | { |
| 417 | return -1; |
| 418 | } |
| 419 | |
| 420 | alignedMsg = (PHV_INPUT_POST_MESSAGE)(ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); |
| 421 | |
| 422 | alignedMsg->ConnectionId = connectionId; |
| 423 | alignedMsg->MessageType = messageType; |
| 424 | alignedMsg->PayloadSize = payloadSize; |
| 425 | memcpy((void*)alignedMsg->Payload, payload, payloadSize); |
| 426 | |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 427 | status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 428 | |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 429 | kfree((void*)addr); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 430 | |
| 431 | return status; |
| 432 | } |
| 433 | |
| 434 | |
| 435 | /*++ |
| 436 | |
| 437 | Name: |
| 438 | HvSignalEvent() |
| 439 | |
| 440 | Description: |
| 441 | Signal an event on the specified connection using the hypervisor event IPC. This |
| 442 | involves a hypercall. |
| 443 | |
| 444 | --*/ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 445 | static HV_STATUS |
Greg Kroah-Hartman | 1277290 | 2009-07-29 09:05:33 -0700 | [diff] [blame] | 446 | HvSignalEvent(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 447 | { |
| 448 | HV_STATUS status; |
| 449 | |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 450 | status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, NULL) & 0xFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 451 | |
| 452 | return status; |
| 453 | } |
| 454 | |
| 455 | |
| 456 | /*++ |
| 457 | |
| 458 | Name: |
| 459 | HvSynicInit() |
| 460 | |
| 461 | Description: |
| 462 | Initialize the Synthethic Interrupt Controller. If it is already initialized by |
| 463 | another entity (ie x2v shim), we need to retrieve the initialized message and event pages. |
| 464 | Otherwise, we create and initialize the message and event pages. |
| 465 | |
| 466 | --*/ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 467 | static int |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 468 | HvSynicInit ( |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 469 | u32 irqVector |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 470 | ) |
| 471 | { |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 472 | u64 version; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 473 | HV_SYNIC_SIMP simp; |
| 474 | HV_SYNIC_SIEFP siefp; |
| 475 | HV_SYNIC_SINT sharedSint; |
| 476 | HV_SYNIC_SCONTROL sctrl; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 477 | u64 guestID; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 478 | int ret=0; |
| 479 | |
| 480 | DPRINT_ENTER(VMBUS); |
| 481 | |
| 482 | if (!gHvContext.HypercallPage) |
| 483 | { |
| 484 | DPRINT_EXIT(VMBUS); |
| 485 | return ret; |
| 486 | } |
| 487 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 488 | /* Check the version */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 489 | rdmsrl(HV_X64_MSR_SVERSION, version); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 490 | |
| 491 | DPRINT_INFO(VMBUS, "SynIC version: %llx", version); |
| 492 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 493 | /* TODO: Handle SMP */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 494 | if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID) |
| 495 | { |
| 496 | DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since it is already set."); |
| 497 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 498 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
| 499 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 500 | |
| 501 | DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx", simp.AsUINT64, siefp.AsUINT64); |
| 502 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 503 | /* Determine if we are running on xenlinux (ie x2v shim) or native linux */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 504 | rdmsrl(HV_X64_MSR_GUEST_OS_ID, guestID); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 505 | if (guestID == HV_LINUX_GUEST_ID) |
| 506 | { |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 507 | gHvContext.synICMessagePage[0] = phys_to_virt(simp.BaseSimpGpa << PAGE_SHIFT); |
| 508 | gHvContext.synICEventPage[0] = phys_to_virt(siefp.BaseSiefpGpa << PAGE_SHIFT); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 509 | } |
| 510 | else |
| 511 | { |
| 512 | DPRINT_ERR(VMBUS, "unknown guest id!!"); |
| 513 | goto Cleanup; |
| 514 | } |
| 515 | DPRINT_DBG(VMBUS, "MAPPED: Simp: %p, Sifep: %p", gHvContext.synICMessagePage[0], gHvContext.synICEventPage[0]); |
| 516 | } |
| 517 | else |
| 518 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 519 | gHvContext.synICMessagePage[0] = osd_PageAlloc(1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 520 | if (gHvContext.synICMessagePage[0] == NULL) |
| 521 | { |
| 522 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC message page!!"); |
| 523 | goto Cleanup; |
| 524 | } |
| 525 | |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 526 | gHvContext.synICEventPage[0] = osd_PageAlloc(1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 527 | if (gHvContext.synICEventPage[0] == NULL) |
| 528 | { |
| 529 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC event page!!"); |
| 530 | goto Cleanup; |
| 531 | } |
| 532 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 533 | /* Setup the Synic's message page */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 534 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 535 | simp.SimpEnabled = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 536 | simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[0]) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 537 | |
| 538 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.AsUINT64); |
| 539 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 540 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 541 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 542 | /* Setup the Synic's event page */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 543 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 544 | siefp.SiefpEnabled = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 545 | siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[0]) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 546 | |
| 547 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.AsUINT64); |
| 548 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 549 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 550 | } |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 551 | /* Setup the interception SINT. */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 552 | /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 553 | /* interceptionSint.AsUINT64); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 554 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 555 | /* Setup the shared SINT. */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 556 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 557 | |
| 558 | sharedSint.AsUINT64 = 0; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 559 | sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ |
| 560 | sharedSint.Masked = false; |
| 561 | sharedSint.AutoEoi = true; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 562 | |
| 563 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", sharedSint.AsUINT64); |
| 564 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 565 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 566 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 567 | /* Enable the global synic bit */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 568 | rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 569 | sctrl.Enable = 1; |
| 570 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 571 | wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 572 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 573 | gHvContext.SynICInitialized = true; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 574 | |
| 575 | DPRINT_EXIT(VMBUS); |
| 576 | |
| 577 | return ret; |
| 578 | |
| 579 | Cleanup: |
| 580 | ret = -1; |
| 581 | |
| 582 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 583 | { |
| 584 | if (gHvContext.synICEventPage[0]) |
| 585 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 586 | osd_PageFree(gHvContext.synICEventPage[0],1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | if (gHvContext.synICMessagePage[0]) |
| 590 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 591 | osd_PageFree(gHvContext.synICMessagePage[0], 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 592 | } |
| 593 | } |
| 594 | |
| 595 | DPRINT_EXIT(VMBUS); |
| 596 | |
| 597 | return ret; |
| 598 | |
| 599 | } |
| 600 | |
| 601 | /*++ |
| 602 | |
| 603 | Name: |
| 604 | HvSynicCleanup() |
| 605 | |
| 606 | Description: |
| 607 | Cleanup routine for HvSynicInit(). |
| 608 | |
| 609 | --*/ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 610 | static void |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 611 | HvSynicCleanup( |
Greg Kroah-Hartman | e20f683 | 2009-07-14 15:07:21 -0700 | [diff] [blame] | 612 | void |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 613 | ) |
| 614 | { |
| 615 | HV_SYNIC_SINT sharedSint; |
| 616 | HV_SYNIC_SIMP simp; |
| 617 | HV_SYNIC_SIEFP siefp; |
| 618 | |
| 619 | DPRINT_ENTER(VMBUS); |
| 620 | |
| 621 | if (!gHvContext.SynICInitialized) |
| 622 | { |
| 623 | DPRINT_EXIT(VMBUS); |
| 624 | return; |
| 625 | } |
| 626 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 627 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 628 | |
| 629 | sharedSint.Masked = 1; |
| 630 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 631 | /* Disable the interrupt */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 632 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 633 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 634 | /* |
| 635 | * Disable and free the resources only if we are running as |
| 636 | * native linux since in xenlinux, we are sharing the |
| 637 | * resources with the x2v shim |
| 638 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 639 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 640 | { |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 641 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 642 | simp.SimpEnabled = 0; |
| 643 | simp.BaseSimpGpa = 0; |
| 644 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 645 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 646 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 647 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 648 | siefp.SiefpEnabled = 0; |
| 649 | siefp.BaseSiefpGpa = 0; |
| 650 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame^] | 651 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 652 | |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 653 | osd_PageFree(gHvContext.synICMessagePage[0], 1); |
| 654 | osd_PageFree(gHvContext.synICEventPage[0], 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | DPRINT_EXIT(VMBUS); |
| 658 | } |
| 659 | |
| 660 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 661 | /* eof */ |