arch/arm64/include/asm/kvm_asm.h

   1 /*
   2  * Copyright (C) 2012,2013 - ARM Ltd
   3  * Author: Marc Zyngier <marc.zyngier@arm.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef __ARM_KVM_ASM_H__
  19 #define __ARM_KVM_ASM_H__
  20
  21 #include <asm/virt.h>
  22
  23 #define ARM_EXIT_WITH_SERROR_BIT  31
  24 #define ARM_EXCEPTION_CODE(x)     ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT))
  25 #define ARM_SERROR_PENDING(x)     !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT))
  26
  27 #define ARM_EXCEPTION_IRQ         0
  28 #define ARM_EXCEPTION_EL1_SERROR  1
  29 #define ARM_EXCEPTION_TRAP        2
  30 /* The hyp-stub will return this for any kvm_call_hyp() call */
  31 #define ARM_EXCEPTION_HYP_GONE    3
  32
  33 #define KVM_ARM64_DEBUG_DIRTY_SHIFT     0
  34 #define KVM_ARM64_DEBUG_DIRTY           (1 << KVM_ARM64_DEBUG_DIRTY_SHIFT)
  35
  36 #define kvm_ksym_ref(sym)                                               \
  37         ({                                                              \
  38                 void *val = &sym;                                       \
  39                 if (!is_kernel_in_hyp_mode())                           \
  40                         val = phys_to_virt((u64)&sym - kimage_voffset); \
  41                 val;                                                    \
  42          })
  43
  44 #ifndef __ASSEMBLY__
  45 struct kvm;
  46 struct kvm_vcpu;
  47
  48 extern char __kvm_hyp_init[];
  49 extern char __kvm_hyp_init_end[];
  50 extern char __kvm_hyp_reset[];
  51
  52 extern char __kvm_hyp_vector[];
  53
  54 extern void __kvm_flush_vm_context(void);
  55 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
  56 extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
  57
  58 extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
  59
  60 extern u64 __vgic_v3_get_ich_vtr_el2(void);
  61 extern void __vgic_v3_init_lrs(void);
  62
  63 extern u32 __kvm_get_mdcr_el2(void);
  64
  65 extern u32 __init_stage2_translation(void);
  66
  67 #endif
  68
  69 #endif /* __ARM_KVM_ASM_H__ */