arch/arm/include/asm/kvm_asm.h

   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__
  58 struct kvm;
  59 struct kvm_vcpu;
  60
  61 extern char __kvm_hyp_init[];
  62 extern char __kvm_hyp_init_end[];
  63
  64 extern char __kvm_hyp_vector[];
  65
  66 extern void __kvm_flush_vm_context(void);
  67 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
  68 extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
  69 extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
  70
  71 extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high);
  72
  73 extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
  74
  75 extern void __init_stage2_translation(void);
  76
  77 extern u64 __vgic_v3_get_ich_vtr_el2(void);
  78 extern u64 __vgic_v3_read_vmcr(void);
  79 extern void __vgic_v3_write_vmcr(u32 vmcr);
  80 extern void __vgic_v3_init_lrs(void);
  81
  82 #endif
  83
  84 #endif /* __ARM_KVM_ASM_H__ */