hv.c revision 7692fd4d441afac728cb83fdd33349d5ba07406c
13e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen/* 23e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * Copyright (c) 2009, Microsoft Corporation. 33e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * 43e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * This program is free software; you can redistribute it and/or modify it 53e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * under the terms and conditions of the GNU General Public License, 63e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * version 2, as published by the Free Software Foundation. 73e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * 83e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * This program is distributed in the hope it will be useful, but WITHOUT 93e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 103e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 113e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * more details. 123e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * 133e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * You should have received a copy of the GNU General Public License along with 143e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * this program; if not, write to the Free Software Foundation, Inc., 59 Temple 153e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * Place - Suite 330, Boston, MA 02111-1307 USA. 163e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * 173e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * Authors: 183e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * Haiyang Zhang <haiyangz@microsoft.com> 193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * Hank Janssen <hjanssen@microsoft.com> 203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen * 213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen */ 22a0086dc512ba6c2161dcf48195daf177ad0c3615Greg Kroah-Hartman#include <linux/kernel.h> 23a0086dc512ba6c2161dcf48195daf177ad0c3615Greg Kroah-Hartman#include <linux/mm.h> 24b7c947f04888b8bb2dc79832c10ede73c5b8dae2Bill Pemberton#include <linux/vmalloc.h> 254983b39a0687b00688478e6748b979a02934b234Greg Kroah-Hartman#include "osd.h" 26645954c54287faee983d37705b80e9ae90c63782Greg Kroah-Hartman#include "logging.h" 273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen#include "VmbusPrivate.h" 283e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 29454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton/* The one and only */ 30af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartmanstruct hv_context gHvContext = { 31af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SynICInitialized = false, 32af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .HypercallPage = NULL, 33af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SignalEventParam = NULL, 34af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SignalEventBuffer = NULL, 353e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen}; 363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 370831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 380831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvQueryHypervisorPresence - Query the cpuid for presense of windows hypervisor 390831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic int HvQueryHypervisorPresence(void) 413e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 420831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int eax; 430831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ebx; 440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ecx; 450831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int edx; 460831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int op; 473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 48454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton eax = 0; 49454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton ebx = 0; 50454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton ecx = 0; 51454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton edx = 0; 520831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionVersionAndFeatures; 53f931a70c370cc826191a51a79500b34cd592b25bGreg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 540831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return ecx & HV_PRESENT_BIT; 563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 573e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvQueryHypervisorInfo - Get version info of the windows hypervisor 600831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 610831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic int HvQueryHypervisorInfo(void) 620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman{ 630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int eax; 640831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ebx; 650831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ecx; 660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int edx; 670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int maxLeaf; 680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int op; 693e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * Its assumed that this is called after confirming that Viridian 720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * is present. Query id and revision. 730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 750831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 770831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionHvVendorAndMaxFunction; 790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 803e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 810831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", 820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ebx & 0xFF), 830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 8) & 0xFF), 840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 16) & 0xFF), 850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 24) & 0xFF), 860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ecx & 0xFF), 870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 8) & 0xFF), 880831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 16) & 0xFF), 890831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 24) & 0xFF), 900831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (edx & 0xFF), 910831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 8) & 0xFF), 920831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 16) & 0xFF), 930831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 24) & 0xFF)); 940831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 950831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman maxLeaf = eax; 960831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 980831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 1000831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionHvInterface; 1010831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 1023e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1030831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", 1040831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (eax & 0xFF), 1050831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 8) & 0xFF), 1060831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 16) & 0xFF), 1070831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 24) & 0xFF)); 1080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 1090831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { 1100831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 1110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 1120831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 1130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 1140831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionMsHvVersion; 1150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 1160831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",\ 1170831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax, 1180831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx >> 16, 1190831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx & 0xFFFF, 1200831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx, 1210831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx >> 24, 1220831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx & 0xFFFFFF); 1230831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman } 1240831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return maxLeaf; 1250831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman} 1263e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1270831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 1280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvDoHypercall - Invoke the specified hypercall 1290831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 1300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic u64 HvDoHypercall(u64 Control, void *Input, void *Output) 1313e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 132530cf2070be30831a371b6c7181d15e5976b6fc7Greg Kroah-Hartman#ifdef CONFIG_X86_64 1330831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 hvStatus = 0; 1340831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; 1350831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; 1360831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman volatile void *hypercallPage = gHvContext.HypercallPage; 1373e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1380831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p " 1390831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "output phys %llx virt %p hypercall %p>", 1400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman Control, inputAddress, Input, 1410831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman outputAddress, Output, hypercallPage); 1423e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1430831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__("mov %0, %%r8" : : "r" (outputAddress) : "r8"); 1440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__("call *%3" : "=a" (hvStatus) : 1450831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "c" (Control), "d" (inputAddress), 1460831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "m" (hypercallPage)); 1473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1480831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus); 1493e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1500831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return hvStatus; 1513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen#else 1533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1540831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 controlHi = Control >> 32; 1550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 controlLo = Control & 0xFFFFFFFF; 1560831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 hvStatusHi = 1; 1570831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 hvStatusLo = 1; 1580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; 1590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 inputAddressHi = inputAddress >> 32; 1600831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 inputAddressLo = inputAddress & 0xFFFFFFFF; 161fa56d361b07513cba87cc5c2b57f3f51248f89a8Greg Kroah-Hartman u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; 1620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 outputAddressHi = outputAddress >> 32; 1630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 outputAddressLo = outputAddress & 0xFFFFFFFF; 1640831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman volatile void *hypercallPage = gHvContext.HypercallPage; 1653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", 1670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman Control, Input, Output); 1683e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi), 1700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "=a"(hvStatusLo) : "d" (controlHi), 1710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "a" (controlLo), "b" (inputAddressHi), 1720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "c" (inputAddressLo), "D"(outputAddressHi), 1730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "S"(outputAddressLo), "m" (hypercallPage)); 1743e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1750831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <return %llx>", 1760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman hvStatusLo | ((u64)hvStatusHi << 32)); 1773e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return hvStatusLo | ((u64)hvStatusHi << 32); 1790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman#endif /* !x86_64 */ 1803e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 1813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 1830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvInit - Main initialization routine. 1840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 1850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This routine must be called before any other routines in here are called 1860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 1870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanint HvInit(void) 1883e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 1890831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman int ret = 0; 1900831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman int maxLeaf; 191f80b3d51a6708b5f14a59c53b1343db59efdda1eGreg Kroah-Hartman union hv_x64_msr_hypercall_contents hypercallMsr; 192949cadaa054588db0c4a3a0cfc3ac93f08fda913Greg Kroah-Hartman void *virtAddr = NULL; 1933e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 1953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 19644f357f835d8a8223b922984eea01aaea29a5f0fBill Pemberton memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS); 19744f357f835d8a8223b922984eea01aaea29a5f0fBill Pemberton memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS); 1983e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!HvQueryHypervisorPresence()) { 2003e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); 2013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2023e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2040831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, 2050831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "Windows hypervisor detected! Retrieving more info..."); 2063e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2070831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman maxLeaf = HvQueryHypervisorInfo(); 2080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* HvQueryHypervisorFeatures(maxLeaf); */ 2093e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2100831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 2110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * Determine if we are running on xenlinux (ie x2v shim) or native 2120831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * linux 2130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 214a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId); 2150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == 0) { 216454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Write our OS info */ 217a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); 2183e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.GuestId = HV_LINUX_GUEST_ID; 2193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 221454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* See if the hypercall page is already set */ 222a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 2230831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == HV_LINUX_GUEST_ID) { 224454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Allocate the hypercall page memory */ 225bfc30aae73b6be57528059a9e03ce8674320e67bGreg Kroah-Hartman /* virtAddr = osd_PageAlloc(1); */ 226bfc30aae73b6be57528059a9e03ce8674320e67bGreg Kroah-Hartman virtAddr = osd_VirtualAllocExec(PAGE_SIZE); 2273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!virtAddr) { 2290831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_ERR(VMBUS, 2300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "unable to allocate hypercall page!!"); 2313e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2323e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2333e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen hypercallMsr.Enable = 1; 2350831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* hypercallMsr.GuestPhysicalAddress = 2360831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * virt_to_phys(virtAddr) >> PAGE_SHIFT; */ 237fa56d361b07513cba87cc5c2b57f3f51248f89a8Greg Kroah-Hartman hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr); 238a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 2393e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Confirm that hypercall page did get setup. */ 2413e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen hypercallMsr.AsUINT64 = 0; 242a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 2430831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!hypercallMsr.Enable) { 2443e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); 2453e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2463e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.HypercallPage = virtAddr; 2490831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman } else { 2500831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", 2510831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.GuestId); 2523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2552701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", 2562701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman gHvContext.HypercallPage, 2572701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); 2583e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 259454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Setup the global signal event param for the signal event hypercall */ 2600831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventBuffer = 2610831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kmalloc(sizeof(struct hv_input_signal_event_buffer), 2620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman GFP_KERNEL); 2633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (!gHvContext.SignalEventBuffer) 2643e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventParam = 2670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (struct hv_input_signal_event *) 2680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, 2690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman HV_HYPERCALL_PARAM_ALIGN)); 2704d64311468a90d4ab1e83c62d63b27da598b73eaGreg Kroah-Hartman gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; 2710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventParam->ConnectionId.u.Id = 2720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman VMBUS_EVENT_CONNECTION_ID; 2733e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventParam->FlagNumber = 0; 2743e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventParam->RsvdZ = 0; 2753e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); */ 2773e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 2793e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return ret; 2813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2823e7ee4902fe6996048f03433dd111426db3cfa92Hank JanssenCleanup: 2830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (virtAddr) { 2840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (hypercallMsr.Enable) { 2853e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen hypercallMsr.AsUINT64 = 0; 286a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 2873e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2883e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 289b7c947f04888b8bb2dc79832c10ede73c5b8dae2Bill Pemberton vfree(virtAddr); 2903e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2913e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen ret = -1; 2923e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 2933e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return ret; 2953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 2963e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 2980831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvCleanup - Cleanup routine. 2990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3000831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This routine is called normally during driver unloading or exiting. 3010831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 3020831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanvoid HvCleanup(void) 3033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 304f80b3d51a6708b5f14a59c53b1343db59efdda1eGreg Kroah-Hartman union hv_x64_msr_hypercall_contents hypercallMsr; 3053e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3063e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 3073e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.SignalEventBuffer) { 3093e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventBuffer = NULL; 3103e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventParam = NULL; 3110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kfree(gHvContext.SignalEventBuffer); 3123e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 3133e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3140831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == HV_LINUX_GUEST_ID) { 3150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.HypercallPage) { 3163e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen hypercallMsr.AsUINT64 = 0; 317a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 318b7c947f04888b8bb2dc79832c10ede73c5b8dae2Bill Pemberton vfree(gHvContext.HypercallPage); 3193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.HypercallPage = NULL; 3203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 3213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 3223e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3233e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 3243e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3253e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3263e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3270831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvPostMessage - Post a message using the hypervisor message IPC. 3290831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3310831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 332034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartmanu16 HvPostMessage(union hv_connection_id connectionId, 333034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman enum hv_message_type messageType, 334034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman void *payload, size_t payloadSize) 3353e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 3363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen struct alignedInput { 3370831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 alignment8; 338cba4decdd3dcd224b17631572456951aace0a27eGreg Kroah-Hartman struct hv_input_post_message msg; 3393e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen }; 3403e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 341cba4decdd3dcd224b17631572456951aace0a27eGreg Kroah-Hartman struct hv_input_post_message *alignedMsg; 342034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 343c4b0bc94828a86cfb6a975b0e0d92dc1cd389565Greg Kroah-Hartman unsigned long addr; 3443e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3453e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) 3463e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3480a72f3cf9f53ae0f4f1c6e05bb081d99b5d72db2Greg Kroah-Hartman addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); 3493e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (!addr) 3503e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3520831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman alignedMsg = (struct hv_input_post_message *) 3530831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); 3543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3553e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->ConnectionId = connectionId; 3563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->MessageType = messageType; 3573e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->PayloadSize = payloadSize; 3580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman memcpy((void *)alignedMsg->Payload, payload, payloadSize); 3593e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 360949cadaa054588db0c4a3a0cfc3ac93f08fda913Greg Kroah-Hartman status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF; 3613e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kfree((void *)addr); 3633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3643e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC. 3700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 373034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartmanu16 HvSignalEvent(void) 3743e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 375034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 3763e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3770831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, 3780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman NULL) & 0xFFFF; 3793e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3803e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicInit - Initialize the Synthethic Interrupt Controller. 3840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * If it is already initialized by another entity (ie x2v shim), we need to 3860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * retrieve the initialized message and event pages. Otherwise, we create and 3870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * initialize the message and event pages. 3880831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 3897692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicInit(void *irqarg) 3903e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 3910831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 version; 392eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 393eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 394eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_sint sharedSint; 395eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_scontrol sctrl; 3960831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 guestID; 3977692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman u32 irqVector = *((u32 *)(irqarg)); 3987692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 3993e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4003e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 4013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4020831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!gHvContext.HypercallPage) { 4033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 4047692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4053e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4063e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 407454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Check the version */ 408a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SVERSION, version); 4093e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4103e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_INFO(VMBUS, "SynIC version: %llx", version); 4113e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 412454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* TODO: Handle SMP */ 4130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID) { 4140831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since " 4150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "it is already set."); 4163e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 417a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 418a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 4193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4200831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx", 4210831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman simp.AsUINT64, siefp.AsUINT64); 4223e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4230831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 4240831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * Determine if we are running on xenlinux (ie x2v shim) or 4250831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * native linux 4260831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 427a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_GUEST_OS_ID, guestID); 4280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (guestID == HV_LINUX_GUEST_ID) { 4297692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICMessagePage[cpu] = 4300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman phys_to_virt(simp.BaseSimpGpa << PAGE_SHIFT); 4317692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICEventPage[cpu] = 4320831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman phys_to_virt(siefp.BaseSiefpGpa << PAGE_SHIFT); 4330831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman } else { 4343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ERR(VMBUS, "unknown guest id!!"); 4353e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 4363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4370831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "MAPPED: Simp: %p, Sifep: %p", 4387692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICMessagePage[cpu], 4397692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICEventPage[cpu]); 4400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman } else { 4417692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICMessagePage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); 4427692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman if (gHvContext.synICMessagePage[cpu] == NULL) { 4430831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_ERR(VMBUS, 4440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "unable to allocate SYNIC message page!!"); 4453e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 4463e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4487692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman gHvContext.synICEventPage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); 4497692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman if (gHvContext.synICEventPage[cpu] == NULL) { 4500831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_ERR(VMBUS, 4510831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "unable to allocate SYNIC event page!!"); 4523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 4533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 455454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Setup the Synic's message page */ 456a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 4573e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen simp.SimpEnabled = 1; 4587692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[cpu]) 4590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman >> PAGE_SHIFT; 4603e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4610831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", 4620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman simp.AsUINT64); 4633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 464a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 4653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 466454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Setup the Synic's event page */ 467a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 4683e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen siefp.SiefpEnabled = 1; 4697692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[cpu]) 4700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman >> PAGE_SHIFT; 4713e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", 4730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman siefp.AsUINT64); 4743e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 475a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 4763e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4770831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 4780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the interception SINT. */ 479a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ 4800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* interceptionSint.AsUINT64); */ 481454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton 4820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the shared SINT. */ 483a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 4843e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4853e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sharedSint.AsUINT64 = 0; 486454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ 487454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.Masked = false; 488454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.AutoEoi = true; 4893e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4900831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", 4910831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman sharedSint.AsUINT64); 4923e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 493a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 4943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 495454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Enable the global synic bit */ 496a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); 4973e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sctrl.Enable = 1; 4983e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 499a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); 5003e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5010e727613ac6e1648d681a75d794862225c801d4bGreg Kroah-Hartman gHvContext.SynICInitialized = true; 5023e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 5043e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5057692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 5063e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5073e7ee4902fe6996048f03433dd111426db3cfa92Hank JanssenCleanup: 5080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == HV_LINUX_GUEST_ID) { 5097692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman if (gHvContext.synICEventPage[cpu]) 5107692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman osd_PageFree(gHvContext.synICEventPage[cpu], 1); 5113e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5127692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman if (gHvContext.synICMessagePage[cpu]) 5137692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman osd_PageFree(gHvContext.synICMessagePage[cpu], 1); 5143e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 5153e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5163e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 5177692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 5183e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 5193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5200831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 5210831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicCleanup - Cleanup routine for HvSynicInit(). 5220831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 5237692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicCleanup(void *arg) 5243e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 525eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_sint sharedSint; 526eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 527eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 5287692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 5293e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5303e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 5313e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5320831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!gHvContext.SynICInitialized) { 5333e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 5343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return; 5353e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 5363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 537a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 5383e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5393e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sharedSint.Masked = 1; 5403e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5417692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman /* Need to correctly cleanup in the case of SMP!!! */ 542454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Disable the interrupt */ 543a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 5443e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 545454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* 546454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton * Disable and free the resources only if we are running as 547454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton * native linux since in xenlinux, we are sharing the 548454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton * resources with the x2v shim 549454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton */ 5500831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (gHvContext.GuestId == HV_LINUX_GUEST_ID) { 551a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 5523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen simp.SimpEnabled = 0; 5533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen simp.BaseSimpGpa = 0; 5543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 555a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 5563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 557a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 5583e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen siefp.SiefpEnabled = 0; 5593e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen siefp.BaseSiefpGpa = 0; 5603e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 561a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 5623e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5637692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman osd_PageFree(gHvContext.synICMessagePage[cpu], 1); 5647692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman osd_PageFree(gHvContext.synICEventPage[cpu], 1); 5653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 5663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 5683e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 569