arch/arm/include/asm/kvm_asm.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   4  * Author: Christoffer Dall <c.dall@virtualopensystems.com>
   5  */
   6
   7 #ifndef __ARM_KVM_ASM_H__
   8 #define __ARM_KVM_ASM_H__
   9
  10 #include <asm/virt.h>
  11
  12 #define ARM_EXIT_WITH_ABORT_BIT  31
  13 #define ARM_EXCEPTION_CODE(x)     ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT))
  14 #define ARM_EXCEPTION_IS_TRAP(x)                                        \
  15         (ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_PREF_ABORT    ||      \
  16          ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_DATA_ABORT    ||      \
  17          ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_HVC)
  18 #define ARM_ABORT_PENDING(x)      !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT))
  19
  20 #define ARM_EXCEPTION_RESET       0
  21 #define ARM_EXCEPTION_UNDEFINED   1
  22 #define ARM_EXCEPTION_SOFTWARE    2
  23 #define ARM_EXCEPTION_PREF_ABORT  3
  24 #define ARM_EXCEPTION_DATA_ABORT  4
  25 #define ARM_EXCEPTION_IRQ         5
  26 #define ARM_EXCEPTION_FIQ         6
  27 #define ARM_EXCEPTION_HVC         7
  28 #define ARM_EXCEPTION_HYP_GONE    HVC_STUB_ERR
  29 /*
  30  * The rr_lo_hi macro swaps a pair of registers depending on
  31  * current endianness. It is used in conjunction with ldrd and strd
  32  * instructions that load/store a 64-bit value from/to memory to/from
  33  * a pair of registers which are used with the mrrc and mcrr instructions.
  34  * If used with the ldrd/strd instructions, the a1 parameter is the first
  35  * source/destination register and the a2 parameter is the second
  36  * source/destination register. Note that the ldrd/strd instructions
  37  * already swap the bytes within the words correctly according to the
  38  * endianness setting, but the order of the registers need to be effectively
  39  * swapped when used with the mrrc/mcrr instructions.
  40  */
  41 #ifdef CONFIG_CPU_ENDIAN_BE8
  42 #define rr_lo_hi(a1, a2) a2, a1
  43 #else
  44 #define rr_lo_hi(a1, a2) a1, a2
  45 #endif
  46
  47 #define kvm_ksym_ref(kva)       (kva)
  48
  49 #ifndef __ASSEMBLY__
  50 struct kvm;
  51 struct kvm_vcpu;
  52
  53 extern char __kvm_hyp_init[];
  54 extern char __kvm_hyp_init_end[];
  55
  56 extern void __kvm_flush_vm_context(void);
  57 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
  58 extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
  59 extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
  60
  61 extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high);
  62
  63 /* no VHE on 32-bit :( */
  64 static inline int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) { BUG(); return 0; }
  65
  66 extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu);
  67
  68 extern void __init_stage2_translation(void);
  69
  70 extern u64 __vgic_v3_get_ich_vtr_el2(void);
  71 extern u64 __vgic_v3_read_vmcr(void);
  72 extern void __vgic_v3_write_vmcr(u32 vmcr);
  73 extern void __vgic_v3_init_lrs(void);
  74
  75 #endif
  76
  77 #endif /* __ARM_KVM_ASM_H__ */