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/*
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
* Author: Christoffer Dall <c.dall@virtualopensystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __ARM_KVM_ASM_H__
#define __ARM_KVM_ASM_H__
#include <asm/virt.h>
#define ARM_EXIT_WITH_ABORT_BIT 31
#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT))
#define ARM_EXCEPTION_IS_TRAP(x) \
(ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_PREF_ABORT || \
ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_DATA_ABORT || \
ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_HVC)
#define ARM_ABORT_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT))
#define ARM_EXCEPTION_RESET 0
#define ARM_EXCEPTION_UNDEFINED 1
#define ARM_EXCEPTION_SOFTWARE 2
#define ARM_EXCEPTION_PREF_ABORT 3
#define ARM_EXCEPTION_DATA_ABORT 4
#define ARM_EXCEPTION_IRQ 5
#define ARM_EXCEPTION_FIQ 6
#define ARM_EXCEPTION_HVC 7
#define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR
/*
* The rr_lo_hi macro swaps a pair of registers depending on
* current endianness. It is used in conjunction with ldrd and strd
* instructions that load/store a 64-bit value from/to memory to/from
* a pair of registers which are used with the mrrc and mcrr instructions.
* If used with the ldrd/strd instructions, the a1 parameter is the first
* source/destination register and the a2 parameter is the second
* source/destination register. Note that the ldrd/strd instructions
* already swap the bytes within the words correctly according to the
* endianness setting, but the order of the registers need to be effectively
* swapped when used with the mrrc/mcrr instructions.
*/
#ifdef CONFIG_CPU_ENDIAN_BE8
#define rr_lo_hi(a1, a2) a2, a1
#else
#define rr_lo_hi(a1, a2) a1, a2
#endif
#define kvm_ksym_ref(kva) (kva)
#ifndef __ASSEMBLY__
struct kvm;
struct kvm_vcpu;
extern char __kvm_hyp_init[];
extern char __kvm_hyp_init_end[];
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);
/* no VHE on 32-bit :( */
static inline int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) { BUG(); return 0; }
extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu);
extern void __init_stage2_translation(void);
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);
#endif
#endif /* __ARM_KVM_ASM_H__ */
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