mirror of https://gitee.com/openkylin/linux.git
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012,2013 - ARM Ltd
|
|
* Author: Marc Zyngier <marc.zyngier@arm.com>
|
|
*/
|
|
|
|
#ifndef __ARM_KVM_ASM_H__
|
|
#define __ARM_KVM_ASM_H__
|
|
|
|
#include <asm/virt.h>
|
|
|
|
#define VCPU_WORKAROUND_2_FLAG_SHIFT 0
|
|
#define VCPU_WORKAROUND_2_FLAG (_AC(1, UL) << VCPU_WORKAROUND_2_FLAG_SHIFT)
|
|
|
|
#define ARM_EXIT_WITH_SERROR_BIT 31
|
|
#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT))
|
|
#define ARM_EXCEPTION_IS_TRAP(x) (ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_TRAP)
|
|
#define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT))
|
|
|
|
#define ARM_EXCEPTION_IRQ 0
|
|
#define ARM_EXCEPTION_EL1_SERROR 1
|
|
#define ARM_EXCEPTION_TRAP 2
|
|
#define ARM_EXCEPTION_IL 3
|
|
/* The hyp-stub will return this for any kvm_call_hyp() call */
|
|
#define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR
|
|
|
|
#define kvm_arm_exception_type \
|
|
{ARM_EXCEPTION_IRQ, "IRQ" }, \
|
|
{ARM_EXCEPTION_EL1_SERROR, "SERROR" }, \
|
|
{ARM_EXCEPTION_TRAP, "TRAP" }, \
|
|
{ARM_EXCEPTION_HYP_GONE, "HYP_GONE" }
|
|
|
|
/*
|
|
* Size of the HYP vectors preamble. kvm_patch_vector_branch() generates code
|
|
* that jumps over this.
|
|
*/
|
|
#define KVM_VECTOR_PREAMBLE (2 * AARCH64_INSN_SIZE)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/mm.h>
|
|
|
|
/* Translate a kernel address of @sym into its equivalent linear mapping */
|
|
#define kvm_ksym_ref(sym) \
|
|
({ \
|
|
void *val = &sym; \
|
|
if (!is_kernel_in_hyp_mode()) \
|
|
val = lm_alias(&sym); \
|
|
val; \
|
|
})
|
|
|
|
struct kvm;
|
|
struct kvm_vcpu;
|
|
|
|
extern char __kvm_hyp_init[];
|
|
extern char __kvm_hyp_init_end[];
|
|
|
|
extern char __kvm_hyp_vector[];
|
|
|
|
extern void __kvm_flush_vm_context(void);
|
|
extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
|
|
extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
|
|
extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
|
|
|
|
extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high);
|
|
|
|
extern int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu);
|
|
|
|
extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu);
|
|
|
|
extern u64 __vgic_v3_get_ich_vtr_el2(void);
|
|
extern u64 __vgic_v3_read_vmcr(void);
|
|
extern void __vgic_v3_write_vmcr(u32 vmcr);
|
|
extern void __vgic_v3_init_lrs(void);
|
|
|
|
extern u32 __kvm_get_mdcr_el2(void);
|
|
|
|
/* Home-grown __this_cpu_{ptr,read} variants that always work at HYP */
|
|
#define __hyp_this_cpu_ptr(sym) \
|
|
({ \
|
|
void *__ptr = hyp_symbol_addr(sym); \
|
|
__ptr += read_sysreg(tpidr_el2); \
|
|
(typeof(&sym))__ptr; \
|
|
})
|
|
|
|
#define __hyp_this_cpu_read(sym) \
|
|
({ \
|
|
*__hyp_this_cpu_ptr(sym); \
|
|
})
|
|
|
|
#else /* __ASSEMBLY__ */
|
|
|
|
.macro hyp_adr_this_cpu reg, sym, tmp
|
|
adr_l \reg, \sym
|
|
mrs \tmp, tpidr_el2
|
|
add \reg, \reg, \tmp
|
|
.endm
|
|
|
|
.macro hyp_ldr_this_cpu reg, sym, tmp
|
|
adr_l \reg, \sym
|
|
mrs \tmp, tpidr_el2
|
|
ldr \reg, [\reg, \tmp]
|
|
.endm
|
|
|
|
.macro get_host_ctxt reg, tmp
|
|
hyp_adr_this_cpu \reg, kvm_host_data, \tmp
|
|
add \reg, \reg, #HOST_DATA_CONTEXT
|
|
.endm
|
|
|
|
.macro get_vcpu_ptr vcpu, ctxt
|
|
get_host_ctxt \ctxt, \vcpu
|
|
ldr \vcpu, [\ctxt, #HOST_CONTEXT_VCPU]
|
|
kern_hyp_va \vcpu
|
|
.endm
|
|
|
|
#endif
|
|
|
|
#endif /* __ARM_KVM_ASM_H__ */
|