259 lines
6.0 KiB
C
259 lines
6.0 KiB
C
/*
|
|
* 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_EMULATE_H__
|
|
#define __ARM_KVM_EMULATE_H__
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include <asm/kvm_asm.h>
|
|
#include <asm/kvm_mmio.h>
|
|
#include <asm/kvm_arm.h>
|
|
#include <asm/cputype.h>
|
|
|
|
unsigned long *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
|
|
unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu);
|
|
|
|
static inline unsigned long vcpu_get_reg(struct kvm_vcpu *vcpu,
|
|
u8 reg_num)
|
|
{
|
|
return *vcpu_reg(vcpu, reg_num);
|
|
}
|
|
|
|
static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num,
|
|
unsigned long val)
|
|
{
|
|
*vcpu_reg(vcpu, reg_num) = val;
|
|
}
|
|
|
|
bool kvm_condition_valid(struct kvm_vcpu *vcpu);
|
|
void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr);
|
|
void kvm_inject_undefined(struct kvm_vcpu *vcpu);
|
|
void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
|
|
void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
|
|
|
|
static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
|
|
{
|
|
vcpu->arch.hcr = HCR_GUEST_MASK;
|
|
}
|
|
|
|
static inline unsigned long vcpu_get_hcr(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.hcr;
|
|
}
|
|
|
|
static inline void vcpu_set_hcr(struct kvm_vcpu *vcpu, unsigned long hcr)
|
|
{
|
|
vcpu->arch.hcr = hcr;
|
|
}
|
|
|
|
static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline unsigned long *vcpu_pc(struct kvm_vcpu *vcpu)
|
|
{
|
|
return &vcpu->arch.regs.usr_regs.ARM_pc;
|
|
}
|
|
|
|
static inline unsigned long *vcpu_cpsr(struct kvm_vcpu *vcpu)
|
|
{
|
|
return &vcpu->arch.regs.usr_regs.ARM_cpsr;
|
|
}
|
|
|
|
static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
|
|
{
|
|
*vcpu_cpsr(vcpu) |= PSR_T_BIT;
|
|
}
|
|
|
|
static inline bool mode_has_spsr(struct kvm_vcpu *vcpu)
|
|
{
|
|
unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
|
|
return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE);
|
|
}
|
|
|
|
static inline bool vcpu_mode_priv(struct kvm_vcpu *vcpu)
|
|
{
|
|
unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
|
|
return cpsr_mode > USR_MODE;;
|
|
}
|
|
|
|
static inline u32 kvm_vcpu_get_hsr(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.fault.hsr;
|
|
}
|
|
|
|
static inline unsigned long kvm_vcpu_get_hfar(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.fault.hxfar;
|
|
}
|
|
|
|
static inline phys_addr_t kvm_vcpu_get_fault_ipa(struct kvm_vcpu *vcpu)
|
|
{
|
|
return ((phys_addr_t)vcpu->arch.fault.hpfar & HPFAR_MASK) << 8;
|
|
}
|
|
|
|
static inline unsigned long kvm_vcpu_get_hyp_pc(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.fault.hyp_pc;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_dabt_isvalid(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_ISV;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_dabt_iswrite(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_WNR;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_dabt_issext(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_SSE;
|
|
}
|
|
|
|
static inline int kvm_vcpu_dabt_get_rd(struct kvm_vcpu *vcpu)
|
|
{
|
|
return (kvm_vcpu_get_hsr(vcpu) & HSR_SRT_MASK) >> HSR_SRT_SHIFT;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_dabt_isextabt(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_EA;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_dabt_iss1tw(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_S1PTW;
|
|
}
|
|
|
|
/* Get Access Size from a data abort */
|
|
static inline int kvm_vcpu_dabt_get_as(struct kvm_vcpu *vcpu)
|
|
{
|
|
switch ((kvm_vcpu_get_hsr(vcpu) >> 22) & 0x3) {
|
|
case 0:
|
|
return 1;
|
|
case 1:
|
|
return 2;
|
|
case 2:
|
|
return 4;
|
|
default:
|
|
kvm_err("Hardware is weird: SAS 0b11 is reserved\n");
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
/* This one is not specific to Data Abort */
|
|
static inline bool kvm_vcpu_trap_il_is32bit(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_IL;
|
|
}
|
|
|
|
static inline u8 kvm_vcpu_trap_get_class(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) >> HSR_EC_SHIFT;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_trap_is_iabt(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_trap_get_class(vcpu) == HSR_EC_IABT;
|
|
}
|
|
|
|
static inline u8 kvm_vcpu_trap_get_fault(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_FSC;
|
|
}
|
|
|
|
static inline u8 kvm_vcpu_trap_get_fault_type(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_FSC_TYPE;
|
|
}
|
|
|
|
static inline u32 kvm_vcpu_hvc_get_imm(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_vcpu_get_hsr(vcpu) & HSR_HVC_IMM_MASK;
|
|
}
|
|
|
|
static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.cp15[c0_MPIDR] & MPIDR_HWID_BITMASK;
|
|
}
|
|
|
|
static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu)
|
|
{
|
|
*vcpu_cpsr(vcpu) |= PSR_E_BIT;
|
|
}
|
|
|
|
static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu)
|
|
{
|
|
return !!(*vcpu_cpsr(vcpu) & PSR_E_BIT);
|
|
}
|
|
|
|
static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu,
|
|
unsigned long data,
|
|
unsigned int len)
|
|
{
|
|
if (kvm_vcpu_is_be(vcpu)) {
|
|
switch (len) {
|
|
case 1:
|
|
return data & 0xff;
|
|
case 2:
|
|
return be16_to_cpu(data & 0xffff);
|
|
default:
|
|
return be32_to_cpu(data);
|
|
}
|
|
} else {
|
|
switch (len) {
|
|
case 1:
|
|
return data & 0xff;
|
|
case 2:
|
|
return le16_to_cpu(data & 0xffff);
|
|
default:
|
|
return le32_to_cpu(data);
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu,
|
|
unsigned long data,
|
|
unsigned int len)
|
|
{
|
|
if (kvm_vcpu_is_be(vcpu)) {
|
|
switch (len) {
|
|
case 1:
|
|
return data & 0xff;
|
|
case 2:
|
|
return cpu_to_be16(data & 0xffff);
|
|
default:
|
|
return cpu_to_be32(data);
|
|
}
|
|
} else {
|
|
switch (len) {
|
|
case 1:
|
|
return data & 0xff;
|
|
case 2:
|
|
return cpu_to_le16(data & 0xffff);
|
|
default:
|
|
return cpu_to_le32(data);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* __ARM_KVM_EMULATE_H__ */
|