hv.c revision b8dfb264f4f9e55f9cf8384cb782dfe5159c413c
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" 2872daf320fb322dc200824e2be17e69553a53fc8aGreg Kroah-Hartman#include "vmbus_private.h" 293e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 30454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton/* The one and only */ 316a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhangstruct hv_context hv_context = { 326a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang .synic_initialized = false, 336a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang .hypercall_page = NULL, 346a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang .signal_event_param = NULL, 356a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang .signal_event_buffer = NULL, 363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen}; 373e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 383e18951955797872558dad615851a4ca63b2770eHank Janssen/* 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; 53f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang op = HVCPUID_VERSION_FEATURES; 54f931a70c370cc826191a51a79500b34cd592b25bGreg Kroah-Hartman cpuid(op, &eax, &ebx, &ecx, &edx); 550831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 560831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return ecx & HV_PRESENT_BIT; 573e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 583e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 593e18951955797872558dad615851a4ca63b2770eHank Janssen/* 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; 68b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang unsigned int max_leaf; 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; 79f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang op = HVCPUID_VENDOR_MAXFUNCTION; 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 96b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang max_leaf = eax; 970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 980831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 990831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 1000831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 101f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang op = HVCPUID_INTERFACE; 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 110b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (max_leaf >= HVCPUID_VERSION) { 1110831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman eax = 0; 1120831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ebx = 0; 1130831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman ecx = 0; 1140831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman edx = 0; 115f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang op = HVCPUID_VERSION; 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 } 125b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang return max_leaf; 1260831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman} 1273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1283e18951955797872558dad615851a4ca63b2770eHank Janssen/* 1290831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvDoHypercall - Invoke the specified hypercall 1300831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 131b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhangstatic u64 HvDoHypercall(u64 control, void *input, void *output) 1323e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 133530cf2070be30831a371b6c7181d15e5976b6fc7Greg Kroah-Hartman#ifdef CONFIG_X86_64 134b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u64 hv_status = 0; 135b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u64 input_address = (input) ? virt_to_phys(input) : 0; 136b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u64 output_address = (output) ? virt_to_phys(output) : 0; 137b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang volatile void *hypercall_page = hv_context.hypercall_page; 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>", 141b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang control, input_address, input, 142b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang output_address, output, hypercall_page); 1433e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 144b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang __asm__ __volatile__("mov %0, %%r8" : : "r" (output_address) : "r8"); 145b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang __asm__ __volatile__("call *%3" : "=a" (hv_status) : 146b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "c" (control), "d" (input_address), 147b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "m" (hypercall_page)); 1483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 149b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hv_status); 1503e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 151b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang return hv_status; 1523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen#else 1543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 155b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 control_hi = control >> 32; 156b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 control_lo = control & 0xFFFFFFFF; 157b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 hv_status_hi = 1; 158b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 hv_status_lo = 1; 159b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u64 input_address = (input) ? virt_to_phys(input) : 0; 160b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 input_address_hi = input_address >> 32; 161b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 input_address_lo = input_address & 0xFFFFFFFF; 162b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u64 output_address = (output) ? virt_to_phys(output) : 0; 163b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 output_address_hi = output_address >> 32; 164b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 output_address_lo = output_address & 0xFFFFFFFF; 165b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang volatile void *hypercall_page = hv_context.hypercall_page; 1663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1670831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", 168b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang control, input, output); 1693e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 170b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi), 171b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "=a"(hv_status_lo) : "d" (control_hi), 172b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "a" (control_lo), "b" (input_address_hi), 173b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "c" (input_address_lo), "D"(output_address_hi), 174b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang "S"(output_address_lo), "m" (hypercall_page)); 1753e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "Hypercall <return %llx>", 177b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hv_status_lo | ((u64)hv_status_hi << 32)); 1783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 179b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang return hv_status_lo | ((u64)hv_status_hi << 32); 1800831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman#endif /* !x86_64 */ 1813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 1823e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1833e18951955797872558dad615851a4ca63b2770eHank Janssen/* 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; 191b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang int max_leaf; 192b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang union hv_x64_msr_hypercall_contents hypercall_msr; 193b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang void *virtaddr = NULL; 1943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 1956a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS); 1966a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang memset(hv_context.synic_message_page, 0, 1976a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang 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 207b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang max_leaf = HvQueryHypervisorInfo(); 2080831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* HvQueryHypervisorFeatures(maxLeaf); */ 2093e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2100831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* 211a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen * We only support running on top of Hyper-V 2120831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 2136a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang rdmsrl(HV_X64_MSR_GUEST_OS_ID, hv_context.guestid); 214a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 2156a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.guestid != 0) { 216a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", 2176a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.guestid); 218a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 2193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2203e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 221a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Write our OS info */ 222a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); 2236a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.guestid = HV_LINUX_GUEST_ID; 224a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 225454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* See if the hypercall page is already set */ 226b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); 2273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 228a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* 229a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen * Allocate the hypercall page memory 230b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang * virtaddr = osd_PageAlloc(1); 231a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen */ 232b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang virtaddr = osd_VirtualAllocExec(PAGE_SIZE); 2333e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 234b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (!virtaddr) { 235a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 236a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate hypercall page!!"); 237a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 238a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 2393e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 240b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hypercall_msr.enable = 1; 241a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 242b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hypercall_msr.guest_physical_address = vmalloc_to_pfn(virtaddr); 243b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); 244a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 245a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Confirm that hypercall page did get setup. */ 246b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hypercall_msr.as_uint64 = 0; 247b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); 248a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 249b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (!hypercall_msr.enable) { 250a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); 2513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 254b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hv_context.hypercall_page = virtaddr; 255a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 2562701f686d7083d516c2f937031515b032d71f563Greg Kroah-Hartman DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", 2576a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.hypercall_page, 258b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang (u64)hypercall_msr.guest_physical_address << PAGE_SHIFT); 2593e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 260454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Setup the global signal event param for the signal event hypercall */ 2616a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_buffer = 2620831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kmalloc(sizeof(struct hv_input_signal_event_buffer), 2630831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman GFP_KERNEL); 2646a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (!hv_context.signal_event_buffer) 2653e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen goto Cleanup; 2663e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2676a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param = 2680831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (struct hv_input_signal_event *) 2696a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang (ALIGN_UP((unsigned long) 2706a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_buffer, 2710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman HV_HYPERCALL_PARAM_ALIGN)); 2726a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param->connectionid.asu32 = 0; 2736a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param->connectionid.u.id = 2740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman VMBUS_EVENT_CONNECTION_ID; 2756a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param->flag_number = 0; 2766a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param->rsvdz = 0; 2773e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2780831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman return ret; 2793e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2803e7ee4902fe6996048f03433dd111426db3cfa92Hank JanssenCleanup: 281b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (virtaddr) { 282b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (hypercall_msr.enable) { 283b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hypercall_msr.as_uint64 = 0; 284b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); 2853e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2863e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 287b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang vfree(virtaddr); 2883e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 2893e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen ret = -1; 2903e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return ret; 2913e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 2923e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 2933e18951955797872558dad615851a4ca63b2770eHank Janssen/* 2940831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvCleanup - Cleanup routine. 2950831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 2960831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This routine is called normally during driver unloading or exiting. 2970831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 2980831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartmanvoid HvCleanup(void) 2993e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 300b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang union hv_x64_msr_hypercall_contents hypercall_msr; 3013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3026a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang kfree(hv_context.signal_event_buffer); 3036a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_buffer = NULL; 3046a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param = NULL; 3053e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3066a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.hypercall_page) { 307b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang hypercall_msr.as_uint64 = 0; 308b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); 3096a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang vfree(hv_context.hypercall_page); 3106a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.hypercall_page = NULL; 3113e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen } 3123e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3133e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3143e18951955797872558dad615851a4ca63b2770eHank Janssen/* 3150831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvPostMessage - Post a message using the hypervisor message IPC. 3160831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3170831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3180831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 319b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhangu16 HvPostMessage(union hv_connection_id connection_id, 320b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang enum hv_message_type message_type, 321b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang void *payload, size_t payload_size) 3223e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 323b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang struct aligned_input { 3240831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 alignment8; 325cba4decdd3dcd224b17631572456951aace0a27eGreg Kroah-Hartman struct hv_input_post_message msg; 3263e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen }; 3273e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 328b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang struct hv_input_post_message *aligned_msg; 329034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 330c4b0bc94828a86cfb6a975b0e0d92dc1cd389565Greg Kroah-Hartman unsigned long addr; 3313e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 332b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang if (payload_size > HV_MESSAGE_PAYLOAD_BYTE_COUNT) 3333e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3343e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 335b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang addr = (unsigned long)kmalloc(sizeof(struct aligned_input), GFP_ATOMIC); 3363e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen if (!addr) 3373e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return -1; 3383e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 339b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang aligned_msg = (struct hv_input_post_message *) 3400831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman (ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); 3413e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 342b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang aligned_msg->connectionid = connection_id; 343b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang aligned_msg->message_type = message_type; 344b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang aligned_msg->payload_size = payload_size; 345b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang memcpy((void *)aligned_msg->payload, payload, payload_size); 3463e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 347b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang status = HvDoHypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL) & 0xFFFF; 3483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3490831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman kfree((void *)addr); 3503e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3513e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3523e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3533e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3553e18951955797872558dad615851a4ca63b2770eHank Janssen/* 3560831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC. 3570831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3580831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * This involves a hypercall. 3590831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 360034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartmanu16 HvSignalEvent(void) 3613e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 362034469e6338b8d683419e3ee7f2543419dd5b574Greg Kroah-Hartman u16 status; 3633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3646a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang status = HvDoHypercall(HVCALL_SIGNAL_EVENT, 3656a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.signal_event_param, 3660831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman NULL) & 0xFFFF; 3673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return status; 3683e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 3693e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3703e18951955797872558dad615851a4ca63b2770eHank Janssen/* 3710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicInit - Initialize the Synthethic Interrupt Controller. 3720831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * 3730831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * If it is already initialized by another entity (ie x2v shim), we need to 3740831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * retrieve the initialized message and event pages. Otherwise, we create and 3750831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * initialize the message and event pages. 3760831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 3777692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicInit(void *irqarg) 3783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 3790831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman u64 version; 380eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 381eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 382b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang union hv_synic_sint shared_sint; 383eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_scontrol sctrl; 384a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 385b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang u32 irq_vector = *((u32 *)(irqarg)); 3867692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 3873e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3886a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (!hv_context.hypercall_page) 3897692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 3903e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 391454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Check the version */ 392a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman rdmsrl(HV_X64_MSR_SVERSION, version); 3933e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3943e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen DPRINT_INFO(VMBUS, "SynIC version: %llx", version); 3953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3966a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.synic_message_page[cpu] = 3976a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang (void *)get_zeroed_page(GFP_ATOMIC); 3983e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 3996a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.synic_message_page[cpu] == NULL) { 400a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 401a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate SYNIC message page!!"); 402a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 403a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 4043e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4056a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.synic_event_page[cpu] = 4066a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang (void *)get_zeroed_page(GFP_ATOMIC); 4073e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4086a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.synic_event_page[cpu] == NULL) { 409a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen DPRINT_ERR(VMBUS, 410a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen "unable to allocate SYNIC event page!!"); 411a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen goto Cleanup; 412a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen } 4133e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 414a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Setup the Synic's message page */ 415f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64); 416f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang simp.simp_enabled = 1; 4176a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang simp.base_simp_gpa = virt_to_phys(hv_context.synic_message_page[cpu]) 418a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen >> PAGE_SHIFT; 4193e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 420f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.as_uint64); 4213e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 422f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64); 4233e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 424a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen /* Setup the Synic's event page */ 425f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64); 426f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang siefp.siefp_enabled = 1; 4276a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang siefp.base_siefp_gpa = virt_to_phys(hv_context.synic_event_page[cpu]) 428a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen >> PAGE_SHIFT; 429a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 430f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.as_uint64); 431a73e6b7c508f610eeb315c443d9ac79041124af0Hank Janssen 432f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64); 4330831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman 4340831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the interception SINT. */ 435a51ed7d65d62aa5ad8d364aa76af30328c26263fGreg Kroah-Hartman /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ 436f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang /* interceptionSint.as_uint64); */ 437454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton 4380831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman /* Setup the shared SINT. */ 439b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64); 4403e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 441b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.as_uint64 = 0; 442b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.vector = irq_vector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ 443b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.masked = false; 444b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.auto_eoi = true; 4453e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4460831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", 447b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.as_uint64); 4483e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 449b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64); 4503e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 451454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Enable the global synic bit */ 452f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64); 453f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang sctrl.enable = 1; 4543e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 455f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64); 4563e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4576a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang hv_context.synic_initialized = true; 4587692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4593e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4603e7ee4902fe6996048f03433dd111426db3cfa92Hank JanssenCleanup: 4616a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.synic_event_page[cpu]) 4626a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang osd_PageFree(hv_context.synic_event_page[cpu], 1); 4633e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4646a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (hv_context.synic_message_page[cpu]) 4656a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang osd_PageFree(hv_context.synic_message_page[cpu], 1); 4667692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman return; 4673e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 4683e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4693e18951955797872558dad615851a4ca63b2770eHank Janssen/* 4700831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman * HvSynicCleanup - Cleanup routine for HvSynicInit(). 4710831ad041fd3611b31c10b46b9716b3c6289f1a1Greg Kroah-Hartman */ 4727692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartmanvoid HvSynicCleanup(void *arg) 4733e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen{ 474b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang union hv_synic_sint shared_sint; 475eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_simp simp; 476eacb1b4d24c2a8b7c1d73bb72e04920980ec8a4fGreg Kroah-Hartman union hv_synic_siefp siefp; 4777692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman int cpu = smp_processor_id(); 4783e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4796a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang if (!hv_context.synic_initialized) 4803e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen return; 4813e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 482b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64); 4833e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 484b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang shared_sint.masked = 1; 4853e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 4867692fd4d441afac728cb83fdd33349d5ba07406cGreg Kroah-Hartman /* Need to correctly cleanup in the case of SMP!!! */ 487454f18a963cf6519bf317e74e6b9781ffef8d253Bill Pemberton /* Disable the interrupt */ 488b8dfb264f4f9e55f9cf8384cb782dfe5159c413cHaiyang Zhang wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64); 4893e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 490f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64); 491f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang simp.simp_enabled = 0; 492f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang simp.base_simp_gpa = 0; 4933e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 494f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64); 4953e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 496f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64); 497f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang siefp.siefp_enabled = 0; 498f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang siefp.base_siefp_gpa = 0; 4993e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 500f6feebe073db4c97dc10f6fab54f9d4b5816886bHaiyang Zhang wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64); 5013e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen 5026a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang osd_PageFree(hv_context.synic_message_page[cpu], 1); 5036a0aaa185057801343e000183ef0695c2a2b75a9Haiyang Zhang osd_PageFree(hv_context.synic_event_page[cpu], 1); 5043e7ee4902fe6996048f03433dd111426db3cfa92Hank Janssen} 505