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); 4383a49794SMarc Zyngier 44*6109c5a6SSean Christopherson void kvm_vcpu_wfi(struct kvm_vcpu *vcpu); 45*6109c5a6SSean Christopherson 465c37f1aeSJames Morse static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 47e72341c5SChristoffer Dall { 48e72341c5SChristoffer Dall return !(vcpu->arch.hcr_el2 & HCR_RW); 49e72341c5SChristoffer Dall } 50e72341c5SChristoffer Dall 51b856a591SChristoffer Dall static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) 52b856a591SChristoffer Dall { 53b856a591SChristoffer Dall vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; 5468908bf7SMarc Zyngier if (is_kernel_in_hyp_mode()) 5568908bf7SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_E2H; 56558daf69SDongjiu Geng if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) { 57558daf69SDongjiu Geng /* route synchronous external abort exceptions to EL2 */ 58558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TEA; 59558daf69SDongjiu Geng /* trap error record accesses */ 60558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TERR; 61558daf69SDongjiu Geng } 625c401308SChristoffer Dall 635c401308SChristoffer Dall if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) { 64e48d53a9SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_FWB; 655c401308SChristoffer Dall } else { 665c401308SChristoffer Dall /* 675c401308SChristoffer Dall * For non-FWB CPUs, we trap VM ops (HCR_EL2.TVM) until M+C 685c401308SChristoffer Dall * get set in SCTLR_EL1 such that we can detect when the guest 695c401308SChristoffer Dall * MMU gets turned on and do the necessary cache maintenance 705c401308SChristoffer Dall * then. 715c401308SChristoffer Dall */ 725c401308SChristoffer Dall vcpu->arch.hcr_el2 |= HCR_TVM; 735c401308SChristoffer Dall } 74558daf69SDongjiu Geng 75801f6772SMarc Zyngier if (test_bit(KVM_ARM_VCPU_EL1_32BIT, vcpu->arch.features)) 76801f6772SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_RW; 77005781beSDave Martin 78005781beSDave Martin /* 79005781beSDave Martin * TID3: trap feature register accesses that we virtualise. 80005781beSDave Martin * For now this is conditional, since no AArch32 feature regs 81005781beSDave Martin * are currently virtualised. 82005781beSDave Martin */ 83e72341c5SChristoffer Dall if (!vcpu_el1_is_32bit(vcpu)) 84005781beSDave Martin vcpu->arch.hcr_el2 |= HCR_TID3; 85f7f2b15cSArd Biesheuvel 86793acf87SArd Biesheuvel if (cpus_have_const_cap(ARM64_MISMATCHED_CACHE_TYPE) || 87793acf87SArd Biesheuvel vcpu_el1_is_32bit(vcpu)) 88f7f2b15cSArd Biesheuvel vcpu->arch.hcr_el2 |= HCR_TID2; 89ea7fc1bbSSteven Price 90ea7fc1bbSSteven Price if (kvm_has_mte(vcpu->kvm)) 91ea7fc1bbSSteven Price vcpu->arch.hcr_el2 |= HCR_ATA; 92b856a591SChristoffer Dall } 93b856a591SChristoffer Dall 943df59d8dSChristoffer Dall static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) 953c1e7165SMarc Zyngier { 963df59d8dSChristoffer Dall return (unsigned long *)&vcpu->arch.hcr_el2; 973c1e7165SMarc Zyngier } 983c1e7165SMarc Zyngier 99ef2e78ddSMarc Zyngier static inline void vcpu_clear_wfx_traps(struct kvm_vcpu *vcpu) 100de737089SMarc Zyngier { 101de737089SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWE; 1027bdabad1SMarc Zyngier if (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count) || 1037bdabad1SMarc Zyngier vcpu->kvm->arch.vgic.nassgireq) 104ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWI; 105ef2e78ddSMarc Zyngier else 106ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWI; 107de737089SMarc Zyngier } 108de737089SMarc Zyngier 109ef2e78ddSMarc Zyngier static inline void vcpu_set_wfx_traps(struct kvm_vcpu *vcpu) 110de737089SMarc Zyngier { 111de737089SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWE; 112ef2e78ddSMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWI; 113de737089SMarc Zyngier } 114de737089SMarc Zyngier 115384b40caSMark Rutland static inline void vcpu_ptrauth_enable(struct kvm_vcpu *vcpu) 116384b40caSMark Rutland { 117384b40caSMark Rutland vcpu->arch.hcr_el2 |= (HCR_API | HCR_APK); 118384b40caSMark Rutland } 119384b40caSMark Rutland 120384b40caSMark Rutland static inline void vcpu_ptrauth_disable(struct kvm_vcpu *vcpu) 121384b40caSMark Rutland { 122384b40caSMark Rutland vcpu->arch.hcr_el2 &= ~(HCR_API | HCR_APK); 123384b40caSMark Rutland } 124384b40caSMark Rutland 125b7b27facSDongjiu Geng static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu) 126b7b27facSDongjiu Geng { 127b7b27facSDongjiu Geng return vcpu->arch.vsesr_el2; 128b7b27facSDongjiu Geng } 129b7b27facSDongjiu Geng 1304715c14bSJames Morse static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr) 1314715c14bSJames Morse { 1324715c14bSJames Morse vcpu->arch.vsesr_el2 = vsesr; 1334715c14bSJames Morse } 1344715c14bSJames Morse 1355c37f1aeSJames Morse static __always_inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu) 13683a49794SMarc Zyngier { 137e47c2055SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->pc; 13883a49794SMarc Zyngier } 13983a49794SMarc Zyngier 1405c37f1aeSJames Morse static __always_inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu) 14183a49794SMarc Zyngier { 142e47c2055SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->pstate; 14383a49794SMarc Zyngier } 14483a49794SMarc Zyngier 1455c37f1aeSJames Morse static __always_inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu) 14683a49794SMarc Zyngier { 147b547631fSMarc Zyngier return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT); 14883a49794SMarc Zyngier } 14983a49794SMarc Zyngier 1505c37f1aeSJames Morse static __always_inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu) 15183a49794SMarc Zyngier { 15227b190bdSMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 15327b190bdSMarc Zyngier return kvm_condition_valid32(vcpu); 15427b190bdSMarc Zyngier 15527b190bdSMarc Zyngier return true; 15683a49794SMarc Zyngier } 15783a49794SMarc Zyngier 15883a49794SMarc Zyngier static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) 15983a49794SMarc Zyngier { 160256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_T_BIT; 16183a49794SMarc Zyngier } 16283a49794SMarc Zyngier 163c0f09634SMarc Zyngier /* 164f6be563aSPavel Fedin * vcpu_get_reg and vcpu_set_reg should always be passed a register number 165f6be563aSPavel Fedin * coming from a read of ESR_EL2. Otherwise, it may give the wrong result on 166f6be563aSPavel Fedin * AArch32 with banked registers. 167c0f09634SMarc Zyngier */ 1685c37f1aeSJames Morse static __always_inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu, 169bc45a516SPavel Fedin u8 reg_num) 170bc45a516SPavel Fedin { 171e47c2055SMarc Zyngier return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs[reg_num]; 172bc45a516SPavel Fedin } 173bc45a516SPavel Fedin 1745c37f1aeSJames Morse static __always_inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, 175bc45a516SPavel Fedin unsigned long val) 176bc45a516SPavel Fedin { 177bc45a516SPavel Fedin if (reg_num != 31) 178e47c2055SMarc Zyngier vcpu_gp_regs(vcpu)->regs[reg_num] = val; 179bc45a516SPavel Fedin } 180bc45a516SPavel Fedin 1811cfbb484SMark Rutland /* 1821cfbb484SMark Rutland * The layout of SPSR for an AArch32 state is different when observed from an 1831cfbb484SMark Rutland * AArch64 SPSR_ELx or an AArch32 SPSR_*. This function generates the AArch32 1841cfbb484SMark Rutland * view given an AArch64 view. 1851cfbb484SMark Rutland * 1861cfbb484SMark Rutland * In ARM DDI 0487E.a see: 1871cfbb484SMark Rutland * 1881cfbb484SMark Rutland * - The AArch64 view (SPSR_EL2) in section C5.2.18, page C5-426 1891cfbb484SMark Rutland * - The AArch32 view (SPSR_abt) in section G8.2.126, page G8-6256 1901cfbb484SMark Rutland * - The AArch32 view (SPSR_und) in section G8.2.132, page G8-6280 1911cfbb484SMark Rutland * 1921cfbb484SMark Rutland * Which show the following differences: 1931cfbb484SMark Rutland * 1941cfbb484SMark Rutland * | Bit | AA64 | AA32 | Notes | 1951cfbb484SMark Rutland * +-----+------+------+-----------------------------| 1961cfbb484SMark Rutland * | 24 | DIT | J | J is RES0 in ARMv8 | 1971cfbb484SMark Rutland * | 21 | SS | DIT | SS doesn't exist in AArch32 | 1981cfbb484SMark Rutland * 1991cfbb484SMark Rutland * ... and all other bits are (currently) common. 2001cfbb484SMark Rutland */ 2011cfbb484SMark Rutland static inline unsigned long host_spsr_to_spsr32(unsigned long spsr) 2021cfbb484SMark Rutland { 2031cfbb484SMark Rutland const unsigned long overlap = BIT(24) | BIT(21); 2041cfbb484SMark Rutland unsigned long dit = !!(spsr & PSR_AA32_DIT_BIT); 2051cfbb484SMark Rutland 2061cfbb484SMark Rutland spsr &= ~overlap; 2071cfbb484SMark Rutland 2081cfbb484SMark Rutland spsr |= dit << 21; 2091cfbb484SMark Rutland 2101cfbb484SMark Rutland return spsr; 2111cfbb484SMark Rutland } 2121cfbb484SMark Rutland 21383a49794SMarc Zyngier static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) 21483a49794SMarc Zyngier { 2159586a2eaSShannon Zhao u32 mode; 21683a49794SMarc Zyngier 2179586a2eaSShannon Zhao if (vcpu_mode_is_32bit(vcpu)) { 218256c0960SMark Rutland mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK; 219256c0960SMark Rutland return mode > PSR_AA32_MODE_USR; 2209586a2eaSShannon Zhao } 2219586a2eaSShannon Zhao 2229586a2eaSShannon Zhao mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK; 223b547631fSMarc Zyngier 22483a49794SMarc Zyngier return mode != PSR_MODE_EL0t; 22583a49794SMarc Zyngier } 22683a49794SMarc Zyngier 2273a949f4cSGavin Shan static __always_inline u32 kvm_vcpu_get_esr(const struct kvm_vcpu *vcpu) 22883a49794SMarc Zyngier { 22983a49794SMarc Zyngier return vcpu->arch.fault.esr_el2; 23083a49794SMarc Zyngier } 23183a49794SMarc Zyngier 2325c37f1aeSJames Morse static __always_inline int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu) 2333e51d435SMarc Zyngier { 2343a949f4cSGavin Shan u32 esr = kvm_vcpu_get_esr(vcpu); 2353e51d435SMarc Zyngier 2363e51d435SMarc Zyngier if (esr & ESR_ELx_CV) 2373e51d435SMarc Zyngier return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT; 2383e51d435SMarc Zyngier 2393e51d435SMarc Zyngier return -1; 2403e51d435SMarc Zyngier } 2413e51d435SMarc Zyngier 2425c37f1aeSJames Morse static __always_inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu) 24383a49794SMarc Zyngier { 24483a49794SMarc Zyngier return vcpu->arch.fault.far_el2; 24583a49794SMarc Zyngier } 24683a49794SMarc Zyngier 2475c37f1aeSJames Morse static __always_inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu) 24883a49794SMarc Zyngier { 24983a49794SMarc Zyngier return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8; 25083a49794SMarc Zyngier } 25183a49794SMarc Zyngier 2520067df41SJames Morse static inline u64 kvm_vcpu_get_disr(const struct kvm_vcpu *vcpu) 2530067df41SJames Morse { 2540067df41SJames Morse return vcpu->arch.fault.disr_el1; 2550067df41SJames Morse } 2560067df41SJames Morse 2570d97f884SWei Huang static inline u32 kvm_vcpu_hvc_get_imm(const struct kvm_vcpu *vcpu) 2580d97f884SWei Huang { 2593a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_xVC_IMM_MASK; 2600d97f884SWei Huang } 2610d97f884SWei Huang 2625c37f1aeSJames Morse static __always_inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu) 26383a49794SMarc Zyngier { 2643a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_ISV); 26583a49794SMarc Zyngier } 26683a49794SMarc Zyngier 267c726200dSChristoffer Dall static inline unsigned long kvm_vcpu_dabt_iss_nisv_sanitized(const struct kvm_vcpu *vcpu) 268c726200dSChristoffer Dall { 2693a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & (ESR_ELx_CM | ESR_ELx_WNR | ESR_ELx_FSC); 270c726200dSChristoffer Dall } 271c726200dSChristoffer Dall 27283a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu) 27383a49794SMarc Zyngier { 2743a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SSE); 27583a49794SMarc Zyngier } 27683a49794SMarc Zyngier 277b6ae256aSChristoffer Dall static inline bool kvm_vcpu_dabt_issf(const struct kvm_vcpu *vcpu) 278b6ae256aSChristoffer Dall { 2793a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SF); 280b6ae256aSChristoffer Dall } 281b6ae256aSChristoffer Dall 2825c37f1aeSJames Morse static __always_inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu) 28383a49794SMarc Zyngier { 2843a949f4cSGavin Shan return (kvm_vcpu_get_esr(vcpu) & ESR_ELx_SRT_MASK) >> ESR_ELx_SRT_SHIFT; 28583a49794SMarc Zyngier } 28683a49794SMarc Zyngier 287c4ad98e4SMarc Zyngier static __always_inline bool kvm_vcpu_abt_iss1tw(const struct kvm_vcpu *vcpu) 28883a49794SMarc Zyngier { 2893a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_S1PTW); 29083a49794SMarc Zyngier } 29183a49794SMarc Zyngier 292620cf45fSMarc Zyngier /* Always check for S1PTW *before* using this. */ 2935c37f1aeSJames Morse static __always_inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu) 29460e21a0eSWill Deacon { 295620cf45fSMarc Zyngier return kvm_vcpu_get_esr(vcpu) & ESR_ELx_WNR; 29660e21a0eSWill Deacon } 29760e21a0eSWill Deacon 29857c841f1SMarc Zyngier static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu) 29957c841f1SMarc Zyngier { 3003a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_CM); 30157c841f1SMarc Zyngier } 30257c841f1SMarc Zyngier 3035c37f1aeSJames Morse static __always_inline unsigned int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu) 30483a49794SMarc Zyngier { 3053a949f4cSGavin Shan return 1 << ((kvm_vcpu_get_esr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT); 30683a49794SMarc Zyngier } 30783a49794SMarc Zyngier 30883a49794SMarc Zyngier /* This one is not specific to Data Abort */ 3095c37f1aeSJames Morse static __always_inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu) 31083a49794SMarc Zyngier { 3113a949f4cSGavin Shan return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_IL); 31283a49794SMarc Zyngier } 31383a49794SMarc Zyngier 3145c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu) 31583a49794SMarc Zyngier { 3163a949f4cSGavin Shan return ESR_ELx_EC(kvm_vcpu_get_esr(vcpu)); 31783a49794SMarc Zyngier } 31883a49794SMarc Zyngier 31983a49794SMarc Zyngier static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu) 32083a49794SMarc Zyngier { 321c6d01a94SMark Rutland return kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_IABT_LOW; 32283a49794SMarc Zyngier } 32383a49794SMarc Zyngier 324c4ad98e4SMarc Zyngier static inline bool kvm_vcpu_trap_is_exec_fault(const struct kvm_vcpu *vcpu) 325c4ad98e4SMarc Zyngier { 326c4ad98e4SMarc Zyngier return kvm_vcpu_trap_is_iabt(vcpu) && !kvm_vcpu_abt_iss1tw(vcpu); 327c4ad98e4SMarc Zyngier } 328c4ad98e4SMarc Zyngier 3295c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu) 33083a49794SMarc Zyngier { 3313a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC; 3320496daa5SChristoffer Dall } 3330496daa5SChristoffer Dall 3345c37f1aeSJames Morse static __always_inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) 3350496daa5SChristoffer Dall { 3363a949f4cSGavin Shan return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC_TYPE; 33783a49794SMarc Zyngier } 33883a49794SMarc Zyngier 3397d894834SYanan Wang static __always_inline u8 kvm_vcpu_trap_get_fault_level(const struct kvm_vcpu *vcpu) 3407d894834SYanan Wang { 3417d894834SYanan Wang return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC_LEVEL; 3427d894834SYanan Wang } 3437d894834SYanan Wang 344c9a636f2SWill Deacon static __always_inline bool kvm_vcpu_abt_issea(const struct kvm_vcpu *vcpu) 345bb428921SJames Morse { 346a2b83133SDongjiu Geng switch (kvm_vcpu_trap_get_fault(vcpu)) { 347bb428921SJames Morse case FSC_SEA: 348bb428921SJames Morse case FSC_SEA_TTW0: 349bb428921SJames Morse case FSC_SEA_TTW1: 350bb428921SJames Morse case FSC_SEA_TTW2: 351bb428921SJames Morse case FSC_SEA_TTW3: 352bb428921SJames Morse case FSC_SECC: 353bb428921SJames Morse case FSC_SECC_TTW0: 354bb428921SJames Morse case FSC_SECC_TTW1: 355bb428921SJames Morse case FSC_SECC_TTW2: 356bb428921SJames Morse case FSC_SECC_TTW3: 357bb428921SJames Morse return true; 358bb428921SJames Morse default: 359bb428921SJames Morse return false; 360bb428921SJames Morse } 361bb428921SJames Morse } 362bb428921SJames Morse 3635c37f1aeSJames Morse static __always_inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) 364c667186fSMarc Zyngier { 3653a949f4cSGavin Shan u32 esr = kvm_vcpu_get_esr(vcpu); 3661c839141SAnshuman Khandual return ESR_ELx_SYS64_ISS_RT(esr); 367c667186fSMarc Zyngier } 368c667186fSMarc Zyngier 36964cf98faSChristoffer Dall static inline bool kvm_is_write_fault(struct kvm_vcpu *vcpu) 37064cf98faSChristoffer Dall { 371c4ad98e4SMarc Zyngier if (kvm_vcpu_abt_iss1tw(vcpu)) 372c4ad98e4SMarc Zyngier return true; 373c4ad98e4SMarc Zyngier 37464cf98faSChristoffer Dall if (kvm_vcpu_trap_is_iabt(vcpu)) 37564cf98faSChristoffer Dall return false; 37664cf98faSChristoffer Dall 37764cf98faSChristoffer Dall return kvm_vcpu_dabt_iswrite(vcpu); 37864cf98faSChristoffer Dall } 37964cf98faSChristoffer Dall 3804429fc64SAndre Przywara static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) 38179c64880SMarc Zyngier { 3828d404c4cSChristoffer Dall return vcpu_read_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; 38379c64880SMarc Zyngier } 38479c64880SMarc Zyngier 385ce94fe93SMarc Zyngier static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) 386ce94fe93SMarc Zyngier { 3878d404c4cSChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 388256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_E_BIT; 3898d404c4cSChristoffer Dall } else { 3908d404c4cSChristoffer Dall u64 sctlr = vcpu_read_sys_reg(vcpu, SCTLR_EL1); 3918d404c4cSChristoffer Dall sctlr |= (1 << 25); 3921975fa56SJames Morse vcpu_write_sys_reg(vcpu, sctlr, SCTLR_EL1); 3938d404c4cSChristoffer Dall } 394ce94fe93SMarc Zyngier } 395ce94fe93SMarc Zyngier 3966d89d2d9SMarc Zyngier static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu) 3976d89d2d9SMarc Zyngier { 3986d89d2d9SMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 399256c0960SMark Rutland return !!(*vcpu_cpsr(vcpu) & PSR_AA32_E_BIT); 4006d89d2d9SMarc Zyngier 40169adec18SMarc Zyngier if (vcpu_mode_priv(vcpu)) 40269adec18SMarc Zyngier return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_ELx_EE); 40369adec18SMarc Zyngier else 40469adec18SMarc Zyngier return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_EL1_E0E); 4056d89d2d9SMarc Zyngier } 4066d89d2d9SMarc Zyngier 4076d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, 4086d89d2d9SMarc Zyngier unsigned long data, 4096d89d2d9SMarc Zyngier unsigned int len) 4106d89d2d9SMarc Zyngier { 4116d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4126d89d2d9SMarc Zyngier switch (len) { 4136d89d2d9SMarc Zyngier case 1: 4146d89d2d9SMarc Zyngier return data & 0xff; 4156d89d2d9SMarc Zyngier case 2: 4166d89d2d9SMarc Zyngier return be16_to_cpu(data & 0xffff); 4176d89d2d9SMarc Zyngier case 4: 4186d89d2d9SMarc Zyngier return be32_to_cpu(data & 0xffffffff); 4196d89d2d9SMarc Zyngier default: 4206d89d2d9SMarc Zyngier return be64_to_cpu(data); 4216d89d2d9SMarc Zyngier } 422b3007086SVictor Kamensky } else { 423b3007086SVictor Kamensky switch (len) { 424b3007086SVictor Kamensky case 1: 425b3007086SVictor Kamensky return data & 0xff; 426b3007086SVictor Kamensky case 2: 427b3007086SVictor Kamensky return le16_to_cpu(data & 0xffff); 428b3007086SVictor Kamensky case 4: 429b3007086SVictor Kamensky return le32_to_cpu(data & 0xffffffff); 430b3007086SVictor Kamensky default: 431b3007086SVictor Kamensky return le64_to_cpu(data); 432b3007086SVictor Kamensky } 4336d89d2d9SMarc Zyngier } 4346d89d2d9SMarc Zyngier 4356d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4366d89d2d9SMarc Zyngier } 4376d89d2d9SMarc Zyngier 4386d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, 4396d89d2d9SMarc Zyngier unsigned long data, 4406d89d2d9SMarc Zyngier unsigned int len) 4416d89d2d9SMarc Zyngier { 4426d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4436d89d2d9SMarc Zyngier switch (len) { 4446d89d2d9SMarc Zyngier case 1: 4456d89d2d9SMarc Zyngier return data & 0xff; 4466d89d2d9SMarc Zyngier case 2: 4476d89d2d9SMarc Zyngier return cpu_to_be16(data & 0xffff); 4486d89d2d9SMarc Zyngier case 4: 4496d89d2d9SMarc Zyngier return cpu_to_be32(data & 0xffffffff); 4506d89d2d9SMarc Zyngier default: 4516d89d2d9SMarc Zyngier return cpu_to_be64(data); 4526d89d2d9SMarc Zyngier } 453b3007086SVictor Kamensky } else { 454b3007086SVictor Kamensky switch (len) { 455b3007086SVictor Kamensky case 1: 456b3007086SVictor Kamensky return data & 0xff; 457b3007086SVictor Kamensky case 2: 458b3007086SVictor Kamensky return cpu_to_le16(data & 0xffff); 459b3007086SVictor Kamensky case 4: 460b3007086SVictor Kamensky return cpu_to_le32(data & 0xffffffff); 461b3007086SVictor Kamensky default: 462b3007086SVictor Kamensky return cpu_to_le64(data); 463b3007086SVictor Kamensky } 4646d89d2d9SMarc Zyngier } 4656d89d2d9SMarc Zyngier 4666d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4676d89d2d9SMarc Zyngier } 4686d89d2d9SMarc Zyngier 469cdb5e02eSMarc Zyngier static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu) 470bd7d95caSMark Rutland { 471cdb5e02eSMarc Zyngier vcpu->arch.flags |= KVM_ARM64_INCREMENT_PC; 472bd7d95caSMark Rutland } 473bd7d95caSMark Rutland 47466e94d5cSMarc Zyngier static inline bool vcpu_has_feature(struct kvm_vcpu *vcpu, int feature) 47566e94d5cSMarc Zyngier { 47666e94d5cSMarc Zyngier return test_bit(feature, vcpu->arch.features); 47766e94d5cSMarc Zyngier } 47866e94d5cSMarc Zyngier 47983a49794SMarc Zyngier #endif /* __ARM64_KVM_EMULATE_H__ */ 480