1 /* 2 * Common hypervisor code 3 * 4 * Copyright (C) 2008, VMware, Inc. 5 * Author : Alok N Kataria <akataria@vmware.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 15 * NON INFRINGEMENT. See the GNU General Public License for more 16 * details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 */ 23 24 #include <asm/processor.h> 25 #include <asm/vmware.h> 26 #include <asm/hypervisor.h> 27 28 static inline void __cpuinit 29 detect_hypervisor_vendor(struct cpuinfo_x86 *c) 30 { 31 if (vmware_platform()) 32 c->x86_hyper_vendor = X86_HYPER_VENDOR_VMWARE; 33 else 34 c->x86_hyper_vendor = X86_HYPER_VENDOR_NONE; 35 } 36 37 unsigned long get_hypervisor_tsc_freq(void) 38 { 39 if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE) 40 return vmware_get_tsc_khz(); 41 return 0; 42 } 43 44 static inline void __cpuinit 45 hypervisor_set_feature_bits(struct cpuinfo_x86 *c) 46 { 47 if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE) { 48 vmware_set_feature_bits(c); 49 return; 50 } 51 } 52 53 void __cpuinit init_hypervisor(struct cpuinfo_x86 *c) 54 { 55 detect_hypervisor_vendor(c); 56 hypervisor_set_feature_bits(c); 57 } 58