1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2014 Neel Natu (neel@freebsd.org) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _SVM_MSR_H_ 30 #define _SVM_MSR_H_ 31 32 struct svm_softc; 33 34 void svm_msr_guest_init(struct svm_softc *sc, int vcpu); 35 void svm_msr_guest_enter(struct svm_softc *sc, int vcpu); 36 void svm_msr_guest_exit(struct svm_softc *sc, int vcpu); 37 38 vm_msr_result_t svm_wrmsr(struct svm_softc *, int, uint32_t, uint64_t); 39 vm_msr_result_t svm_rdmsr(struct svm_softc *, int, uint32_t, uint64_t *); 40 41 /* 42 * TSC Frequency Multiplier MSR related values 43 */ 44 45 /* N integer bits of frequency multiplier */ 46 #define AMD_TSCM_INT_SIZE 8 47 48 /* N fractional bits of frequency multiplier */ 49 #define AMD_TSCM_FRAC_SIZE 32 50 51 /* 52 * The reset value of the frequency multiplier is 1.0 (section 15.30.5 of AMD 53 * Architecture Programmer's Manual Volume 2), indicating the host and guest 54 * have the same TSC frequency. 55 */ 56 #define AMD_TSCM_RESET_VAL (1ULL << AMD_TSCM_FRAC_SIZE) 57 58 #endif /* _SVM_MSR_H_ */ 59