acrn-hypervisor/hypervisor/include/arch/x86/mtrr.h

52 lines
962 B
C
Executable File

/*
* Copyright (C) <2018> Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef MTRR_H
#define MTRR_H
#define FIXED_RANGE_MTRR_NUM 11
#define MTRR_SUB_RANGE_NUM 8
union mtrr_cap_reg {
uint64_t value;
struct {
uint64_t vcnt:8;
uint64_t fix:1;
uint64_t res0:1;
uint64_t wc:1;
uint64_t res1:21;
uint64_t res2:32;
} bits;
};
union mtrr_def_type_reg {
uint64_t value;
struct {
uint64_t type:8;
uint64_t res0:2;
uint64_t fixed_enable:1;
uint64_t enable:1;
uint64_t res1:20;
uint64_t res2:32;
} bits;
};
union mtrr_fixed_range_reg {
uint64_t value;
uint8_t type[MTRR_SUB_RANGE_NUM];
};
struct mtrr_state {
union mtrr_cap_reg cap;
union mtrr_def_type_reg def_type;
union mtrr_fixed_range_reg fixed_range[FIXED_RANGE_MTRR_NUM];
};
void mtrr_wrmsr(struct vcpu *vcpu, uint32_t msr, uint64_t value);
uint64_t mtrr_rdmsr(struct vcpu *vcpu, uint32_t msr);
void init_mtrr(struct vcpu *vcpu);
#endif /* MTRR_H */