hv.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05
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> 245a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 25b7c947f04888b8bb2dc79832c10ede73c5b8dae2Bill Pemberton#include <linux/vmalloc.h> 264983b39a0687b00688478e6748b979a02934b234Greg Kroah-Hartman#include "osd.h" 27645954c54287faee983d37705b80e9ae90c63782Greg Kroah-Hartman#include "logging.h" 283e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen#include "VmbusPrivate.h" 293e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 30454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton/* The one and only */ 31af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartmanstruct hv_context gHvContext = { 32af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SynICInitialized = false, 33af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .HypercallPage = NULL, 34af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SignalEventParam = NULL, 35af248e1f1283792e95fd9842fe343f9260300c9dGreg Kroah-Hartman .SignalEventBuffer = NULL, 363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen}; 373e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 380831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 390831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvQueryHypervisorPresence - Query the cpuid for presense of windows hypervisor 400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 410831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic int HvQueryHypervisorPresence(void) 423e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 430831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int eax; 440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ebx; 450831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ecx; 460831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int edx; 470831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int op; 483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 49454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton eax = 0; 50454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton ebx = 0; 51454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton ecx = 0; 52454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton edx = 0; 530831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionVersionAndFeatures; 54f931a70c370cc826191a51a79500b34cd592b25bGreg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 560831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return ecx & HV_PRESENT_BIT; 573e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 583e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 600831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvQueryHypervisorInfo - Get version info of the windows hypervisor 610831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic int HvQueryHypervisorInfo(void) 630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman{ 640831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int eax; 650831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ebx; 660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int ecx; 670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int edx; 680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int maxLeaf; 690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman unsigned int op; 703e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * Its assumed that this is called after confirming that Viridian 730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * is present. Query id and revision. 740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 750831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 770831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionHvVendorAndMaxFunction; 800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", 830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ebx & 0xFF), 840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 8) & 0xFF), 850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 16) & 0xFF), 860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ebx >> 24) & 0xFF), 870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ecx & 0xFF), 880831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 8) & 0xFF), 890831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 16) & 0xFF), 900831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((ecx >> 24) & 0xFF), 910831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (edx & 0xFF), 920831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 8) & 0xFF), 930831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 16) & 0xFF), 940831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((edx >> 24) & 0xFF)); 950831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 960831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman maxLeaf = eax; 970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 980831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 1000831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 1010831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionHvInterface; 1020831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 1033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1040831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", 1050831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (eax & 0xFF), 1060831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 8) & 0xFF), 1070831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 16) & 0xFF), 1080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ((eax >> 24) & 0xFF)); 1090831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 1100831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { 1110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 1120831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 1130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 1140831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 1150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman op = HvCpuIdFunctionMsHvVersion; 1160831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 1170831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",\ 1180831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax, 1190831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx >> 16, 1200831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx & 0xFFFF, 1210831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx, 1220831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx >> 24, 1230831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx & 0xFFFFFF); 1240831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman } 1250831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return maxLeaf; 1260831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman} 1273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 1290831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvDoHypercall - Invoke the specified hypercall 1300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 1310831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanstatic u64 HvDoHypercall(u64 Control, void *Input, void *Output) 1323e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 133530cf2070be30831a371b6c7181d15e5976b6fc7Greg Kroah-Hartman#ifdef CONFIG_X86_64 1340831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 hvStatus = 0; 1350831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; 1360831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; 1370831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman volatile void *hypercallPage = gHvContext.HypercallPage; 1383e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1390831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p " 1400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "output phys %llx virt %p hypercall %p>", 1410831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman Control, inputAddress, Input, 1420831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman outputAddress, Output, hypercallPage); 1433e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__("mov %0, %%r8" : : "r" (outputAddress) : "r8"); 1450831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__("call *%3" : "=a" (hvStatus) : 1460831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "c" (Control), "d" (inputAddress), 1470831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "m" (hypercallPage)); 1483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1490831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus); 1503e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1510831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return hvStatus; 1523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen#else 1543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 controlHi = Control >> 32; 1560831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 controlLo = Control & 0xFFFFFFFF; 1570831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 hvStatusHi = 1; 1580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 hvStatusLo = 1; 1590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; 1600831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 inputAddressHi = inputAddress >> 32; 1610831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 inputAddressLo = inputAddress & 0xFFFFFFFF; 162fa56d361b07513cba87cc5c2b57f3f51248f89a8Greg Kroah-Hartman u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; 1630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 outputAddressHi = outputAddress >> 32; 1640831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u32 outputAddressLo = outputAddress & 0xFFFFFFFF; 1650831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman volatile void *hypercallPage = gHvContext.HypercallPage; 1663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", 1680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman Control, Input, Output); 1693e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi), 1710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "=a"(hvStatusLo) : "d" (controlHi), 1720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "a" (controlLo), "b" (inputAddressHi), 1730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "c" (inputAddressLo), "D"(outputAddressHi), 1740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "S"(outputAddressLo), "m" (hypercallPage)); 1753e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <return %llx>", 1770831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman hvStatusLo | ((u64)hvStatusHi << 32)); 1783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return hvStatusLo | ((u64)hvStatusHi << 32); 1800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman#endif /* !x86_64 */ 1813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 1823e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 1840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvInit - Main initialization routine. 1850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 1860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This routine must be called before any other routines in here are called 1870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 1880831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanint HvInit(void) 1893e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 1900831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman int ret = 0; 1910831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman int maxLeaf; 192f80b3d51a6708b5f14a59c53b1343db59efdda1eGreg Kroah-Hartman union hv_x64_msr_hypercall_contents hypercallMsr; 193949cadaa054588db0c4a3a0cfc3ac93f08fda913Greg Kroah-Hartman void *virtAddr = NULL; 1943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 1963e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 19744f357f835d8a8223b922984eea01aaea29a5f0fBill Pemberton memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS); 19844f357f835d8a8223b922984eea01aaea29a5f0fBill Pemberton memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS); 1993e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2000831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!HvQueryHypervisorPresence()) { 2013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); 2023e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2043e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2050831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_INFO(VMBUS, 2060831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman "Windows hypervisor detected! Retrieving more info..."); 2073e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman maxLeaf = HvQueryHypervisorInfo(); 2090831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* HvQueryHypervisorFeatures(maxLeaf); */ 2103e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 212a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen * We only support running on top of Hyper-V 2130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 214a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId); 215a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 216a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.GuestId != 0) { 217a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", 218a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.GuestId); 219a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 2203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 222a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Write our OS info */ 223a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); 224a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.GuestId = HV_LINUX_GUEST_ID; 225a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 226454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* See if the hypercall page is already set */ 227a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 2283e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 229a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* 230a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen * Allocate the hypercall page memory 231a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen * virtAddr = osd_PageAlloc(1); 232a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen */ 233a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen virtAddr = osd_VirtualAllocExec(PAGE_SIZE); 2343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 235a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (!virtAddr) { 236a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 237a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate hypercall page!!"); 238a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 239a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 2403e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 241a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen hypercallMsr.Enable = 1; 242a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 243a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr); 244a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 245a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 246a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Confirm that hypercall page did get setup. */ 247a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen hypercallMsr.AsUINT64 = 0; 248a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 249a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 250a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (!hypercallMsr.Enable) { 251a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); 2523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 255a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.HypercallPage = virtAddr; 256a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 2572701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", 2582701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman gHvContext.HypercallPage, 2592701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); 2603e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 261454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Setup the global signal event param for the signal event hypercall */ 2620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventBuffer = 2630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kmalloc(sizeof(struct hv_input_signal_event_buffer), 2640831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman GFP_KERNEL); 2653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (!gHvContext.SignalEventBuffer) 2663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventParam = 2690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (struct hv_input_signal_event *) 2700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, 2710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman HV_HYPERCALL_PARAM_ALIGN)); 2724d64311468a90d4ab1e83c62d63b27da598b73eaGreg Kroah-Hartman gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; 2730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman gHvContext.SignalEventParam->ConnectionId.u.Id = 2740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman VMBUS_EVENT_CONNECTION_ID; 2753e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventParam->FlagNumber = 0; 2763e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen gHvContext.SignalEventParam->RsvdZ = 0; 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 314a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.HypercallPage) { 315a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen hypercallMsr.AsUINT64 = 0; 316a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); 317a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen vfree(gHvContext.HypercallPage); 318a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.HypercallPage = NULL; 3193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 3203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 3223e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3233e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3240831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3250831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvPostMessage - Post a message using the hypervisor message IPC. 3260831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3270831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3280831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 329034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartmanu16 HvPostMessage(union hv_connection_id connectionId, 330034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman enum hv_message_type messageType, 331034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman void *payload, size_t payloadSize) 3323e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 3333e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen struct alignedInput { 3340831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 alignment8; 335cba4decdd3dcd224b17631572456951aace0a27eGreg Kroah-Hartman struct hv_input_post_message msg; 3363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen }; 3373e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 338cba4decdd3dcd224b17631572456951aace0a27eGreg Kroah-Hartman struct hv_input_post_message *alignedMsg; 339034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 340c4b0bc94828a86cfb6a975b0e0d92dc1cd389565Greg Kroah-Hartman unsigned long addr; 3413e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3423e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) 3433e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3443e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3450a72f3cf9f53ae0f4f1c6e05bb081d99b5d72db2Greg Kroah-Hartman addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); 3463e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (!addr) 3473e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3490831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman alignedMsg = (struct hv_input_post_message *) 3500831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); 3513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->ConnectionId = connectionId; 3533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->MessageType = messageType; 3543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen alignedMsg->PayloadSize = payloadSize; 3550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman memcpy((void *)alignedMsg->Payload, payload, payloadSize); 3563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 357949cadaa054588db0c4a3a0cfc3ac93f08fda913Greg Kroah-Hartman status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF; 3583e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kfree((void *)addr); 3603e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3613e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3623e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3643e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3650831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC. 3670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3690831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 370034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartmanu16 HvSignalEvent(void) 3713e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 372034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 3733e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, 3750831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman NULL) & 0xFFFF; 3763e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3773e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 3800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicInit - Initialize the Synthethic Interrupt Controller. 3810831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3820831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * If it is already initialized by another entity (ie x2v shim), we need to 3830831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * retrieve the initialized message and event pages. Otherwise, we create and 3840831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * initialize the message and event pages. 3850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 3867692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicInit(void *irqarg) 3873e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 3880831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 version; 389eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 390eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 391eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_sint sharedSint; 392eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_scontrol sctrl; 393a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 3947692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman u32 irqVector = *((u32 *)(irqarg)); 3957692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 3963e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3973e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 3983e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!gHvContext.HypercallPage) { 4003e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 4017692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4023e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 4033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 404454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Check the version */ 405a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SVERSION, version); 4063e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4073e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_INFO(VMBUS, "SynIC version: %llx", version); 4083e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 409a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.synICMessagePage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); 4103e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 411a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.synICMessagePage[cpu] == NULL) { 412a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 413a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate SYNIC message page!!"); 414a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 415a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 4163e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 417a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen gHvContext.synICEventPage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC); 4183e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 419a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.synICEventPage[cpu] == NULL) { 420a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 421a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate SYNIC event page!!"); 422a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 423a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 4243e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 425a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Setup the Synic's message page */ 426a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 427a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen simp.SimpEnabled = 1; 428a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[cpu]) 429a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen >> PAGE_SHIFT; 4303e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 431a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.AsUINT64); 4323e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 433a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 4343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 435a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Setup the Synic's event page */ 436a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 437a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen siefp.SiefpEnabled = 1; 438a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[cpu]) 439a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen >> PAGE_SHIFT; 440a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 441a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.AsUINT64); 442a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 443a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 4440831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 4450831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the interception SINT. */ 446a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ 4470831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* interceptionSint.AsUINT64); */ 448454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton 4490831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the shared SINT. */ 450a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 4513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sharedSint.AsUINT64 = 0; 453454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ 454454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.Masked = false; 455454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton sharedSint.AutoEoi = true; 4563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4570831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", 4580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman sharedSint.AsUINT64); 4593e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 460a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 4613e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 462454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Enable the global synic bit */ 463a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); 4643e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sctrl.Enable = 1; 4653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 466a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); 4673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4680e727613ac6e1648d681a75d794862225c801d4bGreg Kroah-Hartman gHvContext.SynICInitialized = true; 4693e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4703e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 4713e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4727692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4733e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4743e7ee4902fe6996048f03433dd111426db3cfa92Hank JanssenCleanup: 475a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.synICEventPage[cpu]) 476a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen osd_PageFree(gHvContext.synICEventPage[cpu], 1); 4773e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 478a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen if (gHvContext.synICMessagePage[cpu]) 479a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen osd_PageFree(gHvContext.synICMessagePage[cpu], 1); 4803e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 4827692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4833e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 4843e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4850831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman/** 4860831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicCleanup - Cleanup routine for HvSynicInit(). 4870831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 4887692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicCleanup(void *arg) 4893e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 490eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_sint sharedSint; 491eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 492eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 4937692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 4943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_ENTER(VMBUS); 4963e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman if (!gHvContext.SynICInitialized) { 4983e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 4993e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return; 5003e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 5013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 502a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 5033e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5043e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen sharedSint.Masked = 1; 5053e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5067692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman /* Need to correctly cleanup in the case of SMP!!! */ 507454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Disable the interrupt */ 508a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); 5093e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 510a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 511a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen simp.SimpEnabled = 0; 512a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen simp.BaseSimpGpa = 0; 5133e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 514a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); 5153e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 516a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 517a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen siefp.SiefpEnabled = 0; 518a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen siefp.BaseSiefpGpa = 0; 5193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 520a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); 5213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 522a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen osd_PageFree(gHvContext.synICMessagePage[cpu], 1); 523a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen osd_PageFree(gHvContext.synICEventPage[cpu], 1); 5243e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5253e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_EXIT(VMBUS); 5263e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 527