1caab277bSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 283a49794SMarc Zyngier /* 383a49794SMarc Zyngier * Copyright (C) 2012,2013 - ARM Ltd 483a49794SMarc Zyngier * Author: Marc Zyngier <marc.zyngier@arm.com> 583a49794SMarc Zyngier * 683a49794SMarc Zyngier * Derived from arch/arm/include/kvm_emulate.h 783a49794SMarc Zyngier * Copyright (C) 2012 - Virtual Open Systems and Columbia University 883a49794SMarc Zyngier * Author: Christoffer Dall <c.dall@virtualopensystems.com> 983a49794SMarc Zyngier */ 1083a49794SMarc Zyngier 1183a49794SMarc Zyngier #ifndef __ARM64_KVM_EMULATE_H__ 1283a49794SMarc Zyngier #define __ARM64_KVM_EMULATE_H__ 1383a49794SMarc Zyngier 1483a49794SMarc Zyngier #include <linux/kvm_host.h> 15c6d01a94SMark Rutland 16bd7d95caSMark Rutland #include <asm/debug-monitors.h> 17c6d01a94SMark Rutland #include <asm/esr.h> 1883a49794SMarc Zyngier #include <asm/kvm_arm.h> 1900536ec4SChristoffer Dall #include <asm/kvm_hyp.h> 2083a49794SMarc Zyngier #include <asm/ptrace.h> 214429fc64SAndre Przywara #include <asm/cputype.h> 2268908bf7SMarc Zyngier #include <asm/virt.h> 2383a49794SMarc Zyngier 24bb666c47SMarc Zyngier #define CURRENT_EL_SP_EL0_VECTOR 0x0 25bb666c47SMarc Zyngier #define CURRENT_EL_SP_ELx_VECTOR 0x200 26bb666c47SMarc Zyngier #define LOWER_EL_AArch64_VECTOR 0x400 27bb666c47SMarc Zyngier #define LOWER_EL_AArch32_VECTOR 0x600 28bb666c47SMarc Zyngier 29bb666c47SMarc Zyngier enum exception_type { 30bb666c47SMarc Zyngier except_type_sync = 0, 31bb666c47SMarc Zyngier except_type_irq = 0x80, 32bb666c47SMarc Zyngier except_type_fiq = 0x100, 33bb666c47SMarc Zyngier except_type_serror = 0x180, 34bb666c47SMarc Zyngier }; 35b547631fSMarc Zyngier 3627b190bdSMarc Zyngier bool kvm_condition_valid32(const struct kvm_vcpu *vcpu); 376ddbc281SMarc Zyngier void kvm_skip_instr32(struct kvm_vcpu *vcpu); 3827b190bdSMarc Zyngier 3983a49794SMarc Zyngier void kvm_inject_undefined(struct kvm_vcpu *vcpu); 4010cf3390SMarc Zyngier void kvm_inject_vabt(struct kvm_vcpu *vcpu); 4183a49794SMarc Zyngier void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); 4283a49794SMarc Zyngier void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); 4385ea6b1eSMarc Zyngier void kvm_inject_size_fault(struct kvm_vcpu *vcpu); 4483a49794SMarc Zyngier 456109c5a6SSean Christopherson void kvm_vcpu_wfi(struct kvm_vcpu *vcpu); 466109c5a6SSean Christopherson 4726bf74bdSReiji Watanabe #if defined(__KVM_VHE_HYPERVISOR__) || defined(__KVM_NVHE_HYPERVISOR__) 485c37f1aeSJames Morse static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 49e72341c5SChristoffer Dall { 50e72341c5SChristoffer Dall return !(vcpu->arch.hcr_el2 & HCR_RW); 51e72341c5SChristoffer Dall } 5226bf74bdSReiji Watanabe #else 5326bf74bdSReiji Watanabe static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 5426bf74bdSReiji Watanabe { 5526bf74bdSReiji Watanabe struct kvm *kvm = vcpu->kvm; 5626bf74bdSReiji Watanabe 5726bf74bdSReiji Watanabe WARN_ON_ONCE(!test_bit(KVM_ARCH_FLAG_REG_WIDTH_CONFIGURED, 5826bf74bdSReiji Watanabe &kvm->arch.flags)); 5926bf74bdSReiji Watanabe 6026bf74bdSReiji Watanabe return test_bit(KVM_ARCH_FLAG_EL1_32BIT, &kvm->arch.flags); 6126bf74bdSReiji Watanabe } 6226bf74bdSReiji Watanabe #endif 63e72341c5SChristoffer Dall 64b856a591SChristoffer Dall static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) 65b856a591SChristoffer Dall { 66b856a591SChristoffer Dall vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; 6768908bf7SMarc Zyngier if (is_kernel_in_hyp_mode()) 6868908bf7SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_E2H; 69558daf69SDongjiu Geng if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) { 70558daf69SDongjiu Geng /* route synchronous external abort exceptions to EL2 */ 71558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TEA; 72558daf69SDongjiu Geng /* trap error record accesses */ 73558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TERR; 74558daf69SDongjiu Geng } 755c401308SChristoffer Dall 765c401308SChristoffer Dall if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) { 77e48d53a9SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_FWB; 785c401308SChristoffer Dall } else { 795c401308SChristoffer Dall /* 805c401308SChristoffer Dall * For non-FWB CPUs, we trap VM ops (HCR_EL2.TVM) until M+C 815c401308SChristoffer Dall * get set in SCTLR_EL1 such that we can detect when the guest 825c401308SChristoffer Dall * MMU gets turned on and do the necessary cache maintenance 835c401308SChristoffer Dall * then. 845c401308SChristoffer Dall */ 855c401308SChristoffer Dall vcpu->arch.hcr_el2 |= HCR_TVM; 865c401308SChristoffer Dall } 87558daf69SDongjiu Geng 8826bf74bdSReiji Watanabe if (vcpu_el1_is_32bit(vcpu)) 89801f6772SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_RW; 90f7f2b15cSArd Biesheuvel 91793acf87SArd Biesheuvel if (cpus_have_const_cap(ARM64_MISMATCHED_CACHE_TYPE) || 92793acf87SArd Biesheuvel vcpu_el1_is_32bit(vcpu)) 93f7f2b15cSArd Biesheuvel vcpu->arch.hcr_el2 |= HCR_TID2; 94ea7fc1bbSSteven Price 95ea7fc1bbSSteven Price if (kvm_has_mte(vcpu->kvm)) 96ea7fc1bbSSteven Price vcpu->arch.hcr_el2 |= HCR_ATA; 97b856a591SChristoffer Dall } 98b856a591SChristoffer Dall 993df59d8dSChristoffer Dall static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) 1003c1e7165SMarc Zyngier { 1013df59d8dSChristoffer Dall return (unsigned long *)&vcpu->arch.hcr_el2; 1023c1e7165SMarc Zyngier } 1033c1e7165SMarc Zyngier 104ef2e78ddSMarc Zyngier static inline void vcpu_clear_wfx_traps(struct kvm_vcpu *vcpu) 105de737089SMarc Zyngier { 106de737089SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWE; 1077bdabad1SMarc Zyngier if (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count) || 1087bdabad1SMarc Zyngier vcpu->kvm->arch.vgic.nassgireq) 109ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWI; 110ef2e78ddSMarc Zyngier else 111ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWI; 112de737089SMarc Zyngier } 113de737089SMarc Zyngier 114ef2e78ddSMarc Zyngier static inline void vcpu_set_wfx_traps(struct kvm_vcpu *vcpu) 115de737089SMarc Zyngier { 116de737089SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWE; 117ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWI; 118de737089SMarc Zyngier } 119de737089SMarc Zyngier 120384b40caSMark Rutland static inline void vcpu_ptrauth_enable(struct kvm_vcpu *vcpu) 121384b40caSMark Rutland { 122384b40caSMark Rutland vcpu->arch.hcr_el2 |= (HCR_API | HCR_APK); 123384b40caSMark Rutland } 124384b40caSMark Rutland 125384b40caSMark Rutland static inline void vcpu_ptrauth_disable(struct kvm_vcpu *vcpu) 126384b40caSMark Rutland { 127384b40caSMark Rutland vcpu->arch.hcr_el2 &= ~(HCR_API | HCR_APK); 128384b40caSMark Rutland } 129384b40caSMark Rutland 130b7b27facSDongjiu Geng static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu) 131b7b27facSDongjiu Geng { 132b7b27facSDongjiu Geng return vcpu->arch.vsesr_el2; 133b7b27facSDongjiu Geng } 134b7b27facSDongjiu Geng 1354715c14bSJames Morse static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr) 1364715c14bSJames Morse { 1374715c14bSJames Morse vcpu->arch.vsesr_el2 = vsesr; 1384715c14bSJames Morse } 1394715c14bSJames Morse 1405c37f1aeSJames Morse static __always_inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu) 14183a49794SMarc Zyngier { 142e47c2055SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->pc; 14383a49794SMarc Zyngier } 14483a49794SMarc Zyngier 1455c37f1aeSJames Morse static __always_inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu) 14683a49794SMarc Zyngier { 147e47c2055SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->pstate; 14883a49794SMarc Zyngier } 14983a49794SMarc Zyngier 1505c37f1aeSJames Morse static __always_inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu) 15183a49794SMarc Zyngier { 152b547631fSMarc Zyngier return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT); 15383a49794SMarc Zyngier } 15483a49794SMarc Zyngier 1555c37f1aeSJames Morse static __always_inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu) 15683a49794SMarc Zyngier { 15727b190bdSMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 15827b190bdSMarc Zyngier return kvm_condition_valid32(vcpu); 15927b190bdSMarc Zyngier 16027b190bdSMarc Zyngier return true; 16183a49794SMarc Zyngier } 16283a49794SMarc Zyngier 16383a49794SMarc Zyngier static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) 16483a49794SMarc Zyngier { 165256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_T_BIT; 16683a49794SMarc Zyngier } 16783a49794SMarc Zyngier 168c0f09634SMarc Zyngier /* 169f6be563aSPavel Fedin * vcpu_get_reg and vcpu_set_reg should always be passed a register number 170f6be563aSPavel Fedin * coming from a read of ESR_EL2. Otherwise, it may give the wrong result on 171f6be563aSPavel Fedin * AArch32 with banked registers. 172c0f09634SMarc Zyngier */ 1735c37f1aeSJames Morse static __always_inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu, 174bc45a516SPavel Fedin u8 reg_num) 175bc45a516SPavel Fedin { 176e47c2055SMarc Zyngier return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs[reg_num]; 177bc45a516SPavel Fedin } 178bc45a516SPavel Fedin 1795c37f1aeSJames Morse static __always_inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, 180bc45a516SPavel Fedin unsigned long val) 181bc45a516SPavel Fedin { 182bc45a516SPavel Fedin if (reg_num != 31) 183e47c2055SMarc Zyngier vcpu_gp_regs(vcpu)->regs[reg_num] = val; 184bc45a516SPavel Fedin } 185bc45a516SPavel Fedin 1861cfbb484SMark Rutland /* 1871cfbb484SMark Rutland * The layout of SPSR for an AArch32 state is different when observed from an 1881cfbb484SMark Rutland * AArch64 SPSR_ELx or an AArch32 SPSR_*. This function generates the AArch32 1891cfbb484SMark Rutland * view given an AArch64 view. 1901cfbb484SMark Rutland * 1911cfbb484SMark Rutland * In ARM DDI 0487E.a see: 1921cfbb484SMark Rutland * 1931cfbb484SMark Rutland * - The AArch64 view (SPSR_EL2) in section C5.2.18, page C5-426 1941cfbb484SMark Rutland * - The AArch32 view (SPSR_abt) in section G8.2.126, page G8-6256 1951cfbb484SMark Rutland * - The AArch32 view (SPSR_und) in section G8.2.132, page G8-6280 1961cfbb484SMark Rutland * 1971cfbb484SMark Rutland * Which show the following differences: 1981cfbb484SMark Rutland * 1991cfbb484SMark Rutland * | Bit | AA64 | AA32 | Notes | 2001cfbb484SMark Rutland * +-----+------+------+-----------------------------| 2011cfbb484SMark Rutland * | 24 | DIT | J | J is RES0 in ARMv8 | 2021cfbb484SMark Rutland * | 21 | SS | DIT | SS doesn't exist in AArch32 | 2031cfbb484SMark Rutland * 2041cfbb484SMark Rutland * ... and all other bits are (currently) common. 2051cfbb484SMark Rutland */ 2061cfbb484SMark Rutland static inline unsigned long host_spsr_to_spsr32(unsigned long spsr) 2071cfbb484SMark Rutland { 2081cfbb484SMark Rutland const unsigned long overlap = BIT(24) | BIT(21); 2091cfbb484SMark Rutland unsigned long dit = !!(spsr & PSR_AA32_DIT_BIT); 2101cfbb484SMark Rutland 2111cfbb484SMark Rutland spsr &= ~overlap; 2121cfbb484SMark Rutland 2131cfbb484SMark Rutland spsr |= dit << 21; 2141cfbb484SMark Rutland 2151cfbb484SMark Rutland return spsr; 2161cfbb484SMark Rutland } 2171cfbb484SMark Rutland 21883a49794SMarc Zyngier static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) 21983a49794SMarc Zyngier { 2209586a2eaSShannon Zhao u32 mode; 22183a49794SMarc Zyngier 2229586a2eaSShannon Zhao if (vcpu_mode_is_32bit(vcpu)) { 223256c0960SMark Rutland mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK; 224256c0960SMark Rutland return mode > PSR_AA32_MODE_USR; 2259586a2eaSShannon Zhao } 2269586a2eaSShannon Zhao 2279586a2eaSShannon Zhao mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK; 228b547631fSMarc Zyngier 22983a49794SMarc Zyngier return mode != PSR_MODE_EL0t; 23083a49794SMarc Zyngier } 23183a49794SMarc Zyngier 2320b12620fSAlexandru Elisei static __always_inline u64 kvm_vcpu_get_esr(const struct kvm_vcpu *vcpu) 23383a49794SMarc Zyngier { 23483a49794SMarc Zyngier return vcpu->arch.fault.esr_el2; 23583a49794SMarc Zyngier } 23683a49794SMarc Zyngier 2375c37f1aeSJames Morse static __always_inline int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu) 2383e51d435SMarc Zyngier { 2390b12620fSAlexandru Elisei u64 esr = kvm_vcpu_get_esr(vcpu); 2403e51d435SMarc Zyngier 2413e51d435SMarc Zyngier if (esr & ESR_ELx_CV) 2423e51d435SMarc Zyngier return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT; 2433e51d435SMarc Zyngier 2443e51d435SMarc Zyngier return -1; 2453e51d435SMarc Zyngier } 2463e51d435SMarc Zyngier 2475c37f1aeSJames Morse static __always_inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu) 24883a49794SMarc Zyngier { 24983a49794SMarc Zyngier return vcpu->arch.fault.far_el2; 25083a49794SMarc Zyngier } 25183a49794SMarc Zyngier 2525c37f1aeSJames Morse static __always_inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu) 25383a49794SMarc Zyngier { 25483a49794SMarc Zyngier return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8; 25583a49794SMarc Zyngier } 25683a49794SMarc Zyngier 2570067df41SJames Morse static inline u64 kvm_vcpu_get_disr(const struct kvm_vcpu *vcpu) 2580067df41SJames Morse { 2590067df41SJames Morse return vcpu->arch.fault.disr_el1; 2600067df41SJames Morse } 2610067df41SJames Morse 2620d97f884SWei Huang static inline u32 kvm_vcpu_hvc_get_imm(const struct kvm_vcpu *vcpu) 2630d97f884SWei Huang { 2643a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_xVC_IMM_MASK; 2650d97f884SWei Huang } 2660d97f884SWei Huang 2675c37f1aeSJames Morse static __always_inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu) 26883a49794SMarc Zyngier { 2693a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_ISV); 27083a49794SMarc Zyngier } 27183a49794SMarc Zyngier 272c726200dSChristoffer Dall static inline unsigned long kvm_vcpu_dabt_iss_nisv_sanitized(const struct kvm_vcpu *vcpu) 273c726200dSChristoffer Dall { 2743a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & (ESR_ELx_CM | ESR_ELx_WNR | ESR_ELx_FSC); 275c726200dSChristoffer Dall } 276c726200dSChristoffer Dall 27783a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu) 27883a49794SMarc Zyngier { 2793a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SSE); 28083a49794SMarc Zyngier } 28183a49794SMarc Zyngier 282b6ae256aSChristoffer Dall static inline bool kvm_vcpu_dabt_issf(const struct kvm_vcpu *vcpu) 283b6ae256aSChristoffer Dall { 2843a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SF); 285b6ae256aSChristoffer Dall } 286b6ae256aSChristoffer Dall 2875c37f1aeSJames Morse static __always_inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu) 28883a49794SMarc Zyngier { 2893a949f4cSGavin Shan return (kvm_vcpu_get_esr(vcpu) & ESR_ELx_SRT_MASK) >> ESR_ELx_SRT_SHIFT; 29083a49794SMarc Zyngier } 29183a49794SMarc Zyngier 292c4ad98e4SMarc Zyngier static __always_inline bool kvm_vcpu_abt_iss1tw(const struct kvm_vcpu *vcpu) 29383a49794SMarc Zyngier { 2943a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_S1PTW); 29583a49794SMarc Zyngier } 29683a49794SMarc Zyngier 297620cf45fSMarc Zyngier /* Always check for S1PTW *before* using this. */ 2985c37f1aeSJames Morse static __always_inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu) 29960e21a0eSWill Deacon { 300620cf45fSMarc Zyngier return kvm_vcpu_get_esr(vcpu) & ESR_ELx_WNR; 30160e21a0eSWill Deacon } 30260e21a0eSWill Deacon 30357c841f1SMarc Zyngier static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu) 30457c841f1SMarc Zyngier { 3053a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_CM); 30657c841f1SMarc Zyngier } 30757c841f1SMarc Zyngier 3085c37f1aeSJames Morse static __always_inline unsigned int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu) 30983a49794SMarc Zyngier { 3103a949f4cSGavin Shan return 1 << ((kvm_vcpu_get_esr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT); 31183a49794SMarc Zyngier } 31283a49794SMarc Zyngier 31383a49794SMarc Zyngier /* This one is not specific to Data Abort */ 3145c37f1aeSJames Morse static __always_inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu) 31583a49794SMarc Zyngier { 3163a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_IL); 31783a49794SMarc Zyngier } 31883a49794SMarc Zyngier 3195c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu) 32083a49794SMarc Zyngier { 3213a949f4cSGavin Shan return ESR_ELx_EC(kvm_vcpu_get_esr(vcpu)); 32283a49794SMarc Zyngier } 32383a49794SMarc Zyngier 32483a49794SMarc Zyngier static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu) 32583a49794SMarc Zyngier { 326c6d01a94SMark Rutland return kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_IABT_LOW; 32783a49794SMarc Zyngier } 32883a49794SMarc Zyngier 329c4ad98e4SMarc Zyngier static inline bool kvm_vcpu_trap_is_exec_fault(const struct kvm_vcpu *vcpu) 330c4ad98e4SMarc Zyngier { 331c4ad98e4SMarc Zyngier return kvm_vcpu_trap_is_iabt(vcpu) && !kvm_vcpu_abt_iss1tw(vcpu); 332c4ad98e4SMarc Zyngier } 333c4ad98e4SMarc Zyngier 3345c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu) 33583a49794SMarc Zyngier { 3363a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC; 3370496daa5SChristoffer Dall } 3380496daa5SChristoffer Dall 3395c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) 3400496daa5SChristoffer Dall { 3413a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC_TYPE; 34283a49794SMarc Zyngier } 34383a49794SMarc Zyngier 3447d894834SYanan Wang static __always_inline u8 kvm_vcpu_trap_get_fault_level(const struct kvm_vcpu *vcpu) 3457d894834SYanan Wang { 3467d894834SYanan Wang return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC_LEVEL; 3477d894834SYanan Wang } 3487d894834SYanan Wang 349c9a636f2SWill Deacon static __always_inline bool kvm_vcpu_abt_issea(const struct kvm_vcpu *vcpu) 350bb428921SJames Morse { 351a2b83133SDongjiu Geng switch (kvm_vcpu_trap_get_fault(vcpu)) { 352bb428921SJames Morse case FSC_SEA: 353bb428921SJames Morse case FSC_SEA_TTW0: 354bb428921SJames Morse case FSC_SEA_TTW1: 355bb428921SJames Morse case FSC_SEA_TTW2: 356bb428921SJames Morse case FSC_SEA_TTW3: 357bb428921SJames Morse case FSC_SECC: 358bb428921SJames Morse case FSC_SECC_TTW0: 359bb428921SJames Morse case FSC_SECC_TTW1: 360bb428921SJames Morse case FSC_SECC_TTW2: 361bb428921SJames Morse case FSC_SECC_TTW3: 362bb428921SJames Morse return true; 363bb428921SJames Morse default: 364bb428921SJames Morse return false; 365bb428921SJames Morse } 366bb428921SJames Morse } 367bb428921SJames Morse 3685c37f1aeSJames Morse static __always_inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) 369c667186fSMarc Zyngier { 3700b12620fSAlexandru Elisei u64 esr = kvm_vcpu_get_esr(vcpu); 3711c839141SAnshuman Khandual return ESR_ELx_SYS64_ISS_RT(esr); 372c667186fSMarc Zyngier } 373c667186fSMarc Zyngier 37464cf98faSChristoffer Dall static inline bool kvm_is_write_fault(struct kvm_vcpu *vcpu) 37564cf98faSChristoffer Dall { 376c4ad98e4SMarc Zyngier if (kvm_vcpu_abt_iss1tw(vcpu)) 377c4ad98e4SMarc Zyngier return true; 378c4ad98e4SMarc Zyngier 37964cf98faSChristoffer Dall if (kvm_vcpu_trap_is_iabt(vcpu)) 38064cf98faSChristoffer Dall return false; 38164cf98faSChristoffer Dall 38264cf98faSChristoffer Dall return kvm_vcpu_dabt_iswrite(vcpu); 38364cf98faSChristoffer Dall } 38464cf98faSChristoffer Dall 3854429fc64SAndre Przywara static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) 38679c64880SMarc Zyngier { 3878d404c4cSChristoffer Dall return vcpu_read_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; 38879c64880SMarc Zyngier } 38979c64880SMarc Zyngier 390ce94fe93SMarc Zyngier static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) 391ce94fe93SMarc Zyngier { 3928d404c4cSChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 393256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_E_BIT; 3948d404c4cSChristoffer Dall } else { 3958d404c4cSChristoffer Dall u64 sctlr = vcpu_read_sys_reg(vcpu, SCTLR_EL1); 396500ca524SFuad Tabba sctlr |= SCTLR_ELx_EE; 3971975fa56SJames Morse vcpu_write_sys_reg(vcpu, sctlr, SCTLR_EL1); 3988d404c4cSChristoffer Dall } 399ce94fe93SMarc Zyngier } 400ce94fe93SMarc Zyngier 4016d89d2d9SMarc Zyngier static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu) 4026d89d2d9SMarc Zyngier { 4036d89d2d9SMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 404256c0960SMark Rutland return !!(*vcpu_cpsr(vcpu) & PSR_AA32_E_BIT); 4056d89d2d9SMarc Zyngier 40669adec18SMarc Zyngier if (vcpu_mode_priv(vcpu)) 40769adec18SMarc Zyngier return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_ELx_EE); 40869adec18SMarc Zyngier else 40969adec18SMarc Zyngier return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_EL1_E0E); 4106d89d2d9SMarc Zyngier } 4116d89d2d9SMarc Zyngier 4126d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, 4136d89d2d9SMarc Zyngier unsigned long data, 4146d89d2d9SMarc Zyngier unsigned int len) 4156d89d2d9SMarc Zyngier { 4166d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4176d89d2d9SMarc Zyngier switch (len) { 4186d89d2d9SMarc Zyngier case 1: 4196d89d2d9SMarc Zyngier return data & 0xff; 4206d89d2d9SMarc Zyngier case 2: 4216d89d2d9SMarc Zyngier return be16_to_cpu(data & 0xffff); 4226d89d2d9SMarc Zyngier case 4: 4236d89d2d9SMarc Zyngier return be32_to_cpu(data & 0xffffffff); 4246d89d2d9SMarc Zyngier default: 4256d89d2d9SMarc Zyngier return be64_to_cpu(data); 4266d89d2d9SMarc Zyngier } 427b3007086SVictor Kamensky } else { 428b3007086SVictor Kamensky switch (len) { 429b3007086SVictor Kamensky case 1: 430b3007086SVictor Kamensky return data & 0xff; 431b3007086SVictor Kamensky case 2: 432b3007086SVictor Kamensky return le16_to_cpu(data & 0xffff); 433b3007086SVictor Kamensky case 4: 434b3007086SVictor Kamensky return le32_to_cpu(data & 0xffffffff); 435b3007086SVictor Kamensky default: 436b3007086SVictor Kamensky return le64_to_cpu(data); 437b3007086SVictor Kamensky } 4386d89d2d9SMarc Zyngier } 4396d89d2d9SMarc Zyngier 4406d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4416d89d2d9SMarc Zyngier } 4426d89d2d9SMarc Zyngier 4436d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, 4446d89d2d9SMarc Zyngier unsigned long data, 4456d89d2d9SMarc Zyngier unsigned int len) 4466d89d2d9SMarc Zyngier { 4476d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4486d89d2d9SMarc Zyngier switch (len) { 4496d89d2d9SMarc Zyngier case 1: 4506d89d2d9SMarc Zyngier return data & 0xff; 4516d89d2d9SMarc Zyngier case 2: 4526d89d2d9SMarc Zyngier return cpu_to_be16(data & 0xffff); 4536d89d2d9SMarc Zyngier case 4: 4546d89d2d9SMarc Zyngier return cpu_to_be32(data & 0xffffffff); 4556d89d2d9SMarc Zyngier default: 4566d89d2d9SMarc Zyngier return cpu_to_be64(data); 4576d89d2d9SMarc Zyngier } 458b3007086SVictor Kamensky } else { 459b3007086SVictor Kamensky switch (len) { 460b3007086SVictor Kamensky case 1: 461b3007086SVictor Kamensky return data & 0xff; 462b3007086SVictor Kamensky case 2: 463b3007086SVictor Kamensky return cpu_to_le16(data & 0xffff); 464b3007086SVictor Kamensky case 4: 465b3007086SVictor Kamensky return cpu_to_le32(data & 0xffffffff); 466b3007086SVictor Kamensky default: 467b3007086SVictor Kamensky return cpu_to_le64(data); 468b3007086SVictor Kamensky } 4696d89d2d9SMarc Zyngier } 4706d89d2d9SMarc Zyngier 4716d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4726d89d2d9SMarc Zyngier } 4736d89d2d9SMarc Zyngier 474cdb5e02eSMarc Zyngier static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu) 475bd7d95caSMark Rutland { 476*699bb2e0SMarc Zyngier vcpu_set_flag(vcpu, INCREMENT_PC); 477bd7d95caSMark Rutland } 478bd7d95caSMark Rutland 479*699bb2e0SMarc Zyngier #define kvm_pend_exception(v, e) \ 480*699bb2e0SMarc Zyngier do { \ 481*699bb2e0SMarc Zyngier vcpu_set_flag((v), PENDING_EXCEPTION); \ 482*699bb2e0SMarc Zyngier vcpu_set_flag((v), e); \ 483*699bb2e0SMarc Zyngier } while (0) 484*699bb2e0SMarc Zyngier 485*699bb2e0SMarc Zyngier 48666e94d5cSMarc Zyngier static inline bool vcpu_has_feature(struct kvm_vcpu *vcpu, int feature) 48766e94d5cSMarc Zyngier { 48866e94d5cSMarc Zyngier return test_bit(feature, vcpu->arch.features); 48966e94d5cSMarc Zyngier } 49066e94d5cSMarc Zyngier 49183a49794SMarc Zyngier #endif /* __ARM64_KVM_EMULATE_H__ */ 492