diff options
Diffstat (limited to 'arch/riscv/include/asm/kvm_vcpu_timer.h')
| -rw-r--r-- | arch/riscv/include/asm/kvm_vcpu_timer.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/kvm_vcpu_timer.h b/arch/riscv/include/asm/kvm_vcpu_timer.h new file mode 100644 index 000000000000..375281eb49e0 --- /dev/null +++ b/arch/riscv/include/asm/kvm_vcpu_timer.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2019 Western Digital Corporation or its affiliates. + * + * Authors: + * Atish Patra <[email protected]> + */ + +#ifndef __KVM_VCPU_RISCV_TIMER_H +#define __KVM_VCPU_RISCV_TIMER_H + +#include <linux/hrtimer.h> + +struct kvm_guest_timer { + /* Mult & Shift values to get nanoseconds from cycles */ + u32 nsec_mult; + u32 nsec_shift; + /* Time delta value */ + u64 time_delta; +}; + +struct kvm_vcpu_timer { + /* Flag for whether init is done */ + bool init_done; + /* Flag for whether timer event is configured */ + bool next_set; + /* Next timer event cycles */ + u64 next_cycles; + /* Underlying hrtimer instance */ + struct hrtimer hrt; +}; + +int kvm_riscv_vcpu_timer_next_event(struct kvm_vcpu *vcpu, u64 ncycles); +int kvm_riscv_vcpu_get_reg_timer(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +int kvm_riscv_vcpu_set_reg_timer(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +int kvm_riscv_vcpu_timer_init(struct kvm_vcpu *vcpu); +int kvm_riscv_vcpu_timer_deinit(struct kvm_vcpu *vcpu); +int kvm_riscv_vcpu_timer_reset(struct kvm_vcpu *vcpu); +void kvm_riscv_vcpu_timer_restore(struct kvm_vcpu *vcpu); +int kvm_riscv_guest_timer_init(struct kvm *kvm); + +#endif |