LXR linux/arch/arm/include/asm/kvm

   1/*
   2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   3 * Author: Christoffer Dall <c.dall@virtualopensystems.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, write to the Free Software
  16 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 */
  18
  19#ifndef __ARM_KVM_ASM_H__
  20#define __ARM_KVM_ASM_H__
  21
  22#include <asm/virt.h>
  23
  24#define ARM_EXIT_WITH_ABORT_BIT  31
  25#define ARM_EXCEPTION_CODE(x)     ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT))
  26#define ARM_ABORT_PENDING(x)      !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT))
  27
  28#define ARM_EXCEPTION_RESET       0
  29#define ARM_EXCEPTION_UNDEFINED   1
  30#define ARM_EXCEPTION_SOFTWARE    2
  31#define ARM_EXCEPTION_PREF_ABORT  3
  32#define ARM_EXCEPTION_DATA_ABORT  4
  33#define ARM_EXCEPTION_IRQ         5
  34#define ARM_EXCEPTION_FIQ         6
  35#define ARM_EXCEPTION_HVC         7
  36#define ARM_EXCEPTION_HYP_GONE    HVC_STUB_ERR
  37/*
  38 * The rr_lo_hi macro swaps a pair of registers depending on
  39 * current endianness. It is used in conjunction with ldrd and strd
  40 * instructions that load/store a 64-bit value from/to memory to/from
  41 * a pair of registers which are used with the mrrc and mcrr instructions.
  42 * If used with the ldrd/strd instructions, the a1 parameter is the first
  43 * source/destination register and the a2 parameter is the second
  44 * source/destination register. Note that the ldrd/strd instructions
  45 * already swap the bytes within the words correctly according to the
  46 * endianness setting, but the order of the registers need to be effectively
  47 * swapped when used with the mrrc/mcrr instructions.
  48 */
  49#ifdef CONFIG_CPU_ENDIAN_BE8
  50#define rr_lo_hi(a1, a2) a2, a1
  51#else
  52#define rr_lo_hi(a1, a2) a1, a2
  53#endif
  54
  55#define kvm_ksym_ref(kva)       (kva)
  56
  57#ifndef __ASSEMBLY__
  58struct kvm;
  59struct kvm_vcpu;
  60
  61extern char __kvm_hyp_init[];
  62extern char __kvm_hyp_init_end[];
  63
  64extern char __kvm_hyp_vector[];
  65
  66extern void __kvm_flush_vm_context(void);
  67extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
  68extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
  69extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
  70
  71extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
  72
  73extern void __init_stage2_translation(void);
  74
  75extern u64 __vgic_v3_get_ich_vtr_el2(void);
  76extern u64 __vgic_v3_read_vmcr(void);
  77extern void __vgic_v3_write_vmcr(u32 vmcr);
  78extern void __vgic_v3_init_lrs(void);
  79
  80#endif
  81
  82#endif /* __ARM_KVM_ASM_H__ */
  83