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/kvm_mmio.h> 2183a49794SMarc Zyngier #include <asm/ptrace.h> 224429fc64SAndre Przywara #include <asm/cputype.h> 2368908bf7SMarc Zyngier #include <asm/virt.h> 2483a49794SMarc Zyngier 25b547631fSMarc Zyngier unsigned long *vcpu_reg32(const struct kvm_vcpu *vcpu, u8 reg_num); 26a8928195SChristoffer Dall unsigned long vcpu_read_spsr32(const struct kvm_vcpu *vcpu); 27a8928195SChristoffer Dall void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v); 28b547631fSMarc Zyngier 2927b190bdSMarc Zyngier bool kvm_condition_valid32(const struct kvm_vcpu *vcpu); 3027b190bdSMarc Zyngier void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr); 3127b190bdSMarc Zyngier 3283a49794SMarc Zyngier void kvm_inject_undefined(struct kvm_vcpu *vcpu); 3310cf3390SMarc Zyngier void kvm_inject_vabt(struct kvm_vcpu *vcpu); 3483a49794SMarc Zyngier void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); 3583a49794SMarc Zyngier void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); 3674a64a98SMarc Zyngier void kvm_inject_undef32(struct kvm_vcpu *vcpu); 3774a64a98SMarc Zyngier void kvm_inject_dabt32(struct kvm_vcpu *vcpu, unsigned long addr); 3874a64a98SMarc Zyngier void kvm_inject_pabt32(struct kvm_vcpu *vcpu, unsigned long addr); 3983a49794SMarc Zyngier 40e72341c5SChristoffer Dall static inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 41e72341c5SChristoffer Dall { 42e72341c5SChristoffer Dall return !(vcpu->arch.hcr_el2 & HCR_RW); 43e72341c5SChristoffer Dall } 44e72341c5SChristoffer Dall 45b856a591SChristoffer Dall static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) 46b856a591SChristoffer Dall { 47b856a591SChristoffer Dall vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; 4868908bf7SMarc Zyngier if (is_kernel_in_hyp_mode()) 4968908bf7SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_E2H; 50558daf69SDongjiu Geng if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) { 51558daf69SDongjiu Geng /* route synchronous external abort exceptions to EL2 */ 52558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TEA; 53558daf69SDongjiu Geng /* trap error record accesses */ 54558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TERR; 55558daf69SDongjiu Geng } 56e48d53a9SMarc Zyngier if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) 57e48d53a9SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_FWB; 58558daf69SDongjiu Geng 59801f6772SMarc Zyngier if (test_bit(KVM_ARM_VCPU_EL1_32BIT, vcpu->arch.features)) 60801f6772SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_RW; 61005781beSDave Martin 62005781beSDave Martin /* 63005781beSDave Martin * TID3: trap feature register accesses that we virtualise. 64005781beSDave Martin * For now this is conditional, since no AArch32 feature regs 65005781beSDave Martin * are currently virtualised. 66005781beSDave Martin */ 67e72341c5SChristoffer Dall if (!vcpu_el1_is_32bit(vcpu)) 68005781beSDave Martin vcpu->arch.hcr_el2 |= HCR_TID3; 69f7f2b15cSArd Biesheuvel 70793acf87SArd Biesheuvel if (cpus_have_const_cap(ARM64_MISMATCHED_CACHE_TYPE) || 71793acf87SArd Biesheuvel vcpu_el1_is_32bit(vcpu)) 72f7f2b15cSArd Biesheuvel vcpu->arch.hcr_el2 |= HCR_TID2; 73b856a591SChristoffer Dall } 74b856a591SChristoffer Dall 753df59d8dSChristoffer Dall static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) 763c1e7165SMarc Zyngier { 773df59d8dSChristoffer Dall return (unsigned long *)&vcpu->arch.hcr_el2; 783c1e7165SMarc Zyngier } 793c1e7165SMarc Zyngier 80de737089SMarc Zyngier static inline void vcpu_clear_wfe_traps(struct kvm_vcpu *vcpu) 81de737089SMarc Zyngier { 82de737089SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWE; 83de737089SMarc Zyngier } 84de737089SMarc Zyngier 85de737089SMarc Zyngier static inline void vcpu_set_wfe_traps(struct kvm_vcpu *vcpu) 86de737089SMarc Zyngier { 87de737089SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWE; 88de737089SMarc Zyngier } 89de737089SMarc Zyngier 90384b40caSMark Rutland static inline void vcpu_ptrauth_enable(struct kvm_vcpu *vcpu) 91384b40caSMark Rutland { 92384b40caSMark Rutland vcpu->arch.hcr_el2 |= (HCR_API | HCR_APK); 93384b40caSMark Rutland } 94384b40caSMark Rutland 95384b40caSMark Rutland static inline void vcpu_ptrauth_disable(struct kvm_vcpu *vcpu) 96384b40caSMark Rutland { 97384b40caSMark Rutland vcpu->arch.hcr_el2 &= ~(HCR_API | HCR_APK); 98384b40caSMark Rutland } 99384b40caSMark Rutland 100384b40caSMark Rutland static inline void vcpu_ptrauth_setup_lazy(struct kvm_vcpu *vcpu) 101384b40caSMark Rutland { 102384b40caSMark Rutland if (vcpu_has_ptrauth(vcpu)) 103384b40caSMark Rutland vcpu_ptrauth_disable(vcpu); 104384b40caSMark Rutland } 105384b40caSMark Rutland 106b7b27facSDongjiu Geng static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu) 107b7b27facSDongjiu Geng { 108b7b27facSDongjiu Geng return vcpu->arch.vsesr_el2; 109b7b27facSDongjiu Geng } 110b7b27facSDongjiu Geng 1114715c14bSJames Morse static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr) 1124715c14bSJames Morse { 1134715c14bSJames Morse vcpu->arch.vsesr_el2 = vsesr; 1144715c14bSJames Morse } 1154715c14bSJames Morse 11683a49794SMarc Zyngier static inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu) 11783a49794SMarc Zyngier { 11883a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pc; 11983a49794SMarc Zyngier } 12083a49794SMarc Zyngier 1216d4bd909SChristoffer Dall static inline unsigned long *__vcpu_elr_el1(const struct kvm_vcpu *vcpu) 12283a49794SMarc Zyngier { 12383a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->elr_el1; 12483a49794SMarc Zyngier } 12583a49794SMarc Zyngier 1266d4bd909SChristoffer Dall static inline unsigned long vcpu_read_elr_el1(const struct kvm_vcpu *vcpu) 1276d4bd909SChristoffer Dall { 1286d4bd909SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 1296d4bd909SChristoffer Dall return read_sysreg_el1(elr); 1306d4bd909SChristoffer Dall else 1316d4bd909SChristoffer Dall return *__vcpu_elr_el1(vcpu); 1326d4bd909SChristoffer Dall } 1336d4bd909SChristoffer Dall 1346d4bd909SChristoffer Dall static inline void vcpu_write_elr_el1(const struct kvm_vcpu *vcpu, unsigned long v) 1356d4bd909SChristoffer Dall { 1366d4bd909SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 1376d4bd909SChristoffer Dall write_sysreg_el1(v, elr); 1386d4bd909SChristoffer Dall else 1396d4bd909SChristoffer Dall *__vcpu_elr_el1(vcpu) = v; 1406d4bd909SChristoffer Dall } 1416d4bd909SChristoffer Dall 14283a49794SMarc Zyngier static inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu) 14383a49794SMarc Zyngier { 14483a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pstate; 14583a49794SMarc Zyngier } 14683a49794SMarc Zyngier 14783a49794SMarc Zyngier static inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu) 14883a49794SMarc Zyngier { 149b547631fSMarc Zyngier return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT); 15083a49794SMarc Zyngier } 15183a49794SMarc Zyngier 15283a49794SMarc Zyngier static inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu) 15383a49794SMarc Zyngier { 15427b190bdSMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 15527b190bdSMarc Zyngier return kvm_condition_valid32(vcpu); 15627b190bdSMarc Zyngier 15727b190bdSMarc Zyngier return true; 15883a49794SMarc Zyngier } 15983a49794SMarc Zyngier 16083a49794SMarc Zyngier static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) 16183a49794SMarc Zyngier { 162256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_T_BIT; 16383a49794SMarc Zyngier } 16483a49794SMarc Zyngier 165c0f09634SMarc Zyngier /* 166f6be563aSPavel Fedin * vcpu_get_reg and vcpu_set_reg should always be passed a register number 167f6be563aSPavel Fedin * coming from a read of ESR_EL2. Otherwise, it may give the wrong result on 168f6be563aSPavel Fedin * AArch32 with banked registers. 169c0f09634SMarc Zyngier */ 170bc45a516SPavel Fedin static inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu, 171bc45a516SPavel Fedin u8 reg_num) 172bc45a516SPavel Fedin { 173bc45a516SPavel Fedin return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs.regs[reg_num]; 174bc45a516SPavel Fedin } 175bc45a516SPavel Fedin 176bc45a516SPavel Fedin static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, 177bc45a516SPavel Fedin unsigned long val) 178bc45a516SPavel Fedin { 179bc45a516SPavel Fedin if (reg_num != 31) 180bc45a516SPavel Fedin vcpu_gp_regs(vcpu)->regs.regs[reg_num] = val; 181bc45a516SPavel Fedin } 182bc45a516SPavel Fedin 18300536ec4SChristoffer Dall static inline unsigned long vcpu_read_spsr(const struct kvm_vcpu *vcpu) 18483a49794SMarc Zyngier { 185a8928195SChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) 186a8928195SChristoffer Dall return vcpu_read_spsr32(vcpu); 18700536ec4SChristoffer Dall 18800536ec4SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 18900536ec4SChristoffer Dall return read_sysreg_el1(spsr); 19000536ec4SChristoffer Dall else 191a8928195SChristoffer Dall return vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1]; 19200536ec4SChristoffer Dall } 19300536ec4SChristoffer Dall 194a8928195SChristoffer Dall static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v) 19500536ec4SChristoffer Dall { 19600536ec4SChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 197a8928195SChristoffer Dall vcpu_write_spsr32(vcpu, v); 19800536ec4SChristoffer Dall return; 19900536ec4SChristoffer Dall } 20000536ec4SChristoffer Dall 20100536ec4SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 20200536ec4SChristoffer Dall write_sysreg_el1(v, spsr); 20300536ec4SChristoffer Dall else 204a8928195SChristoffer Dall vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1] = v; 20583a49794SMarc Zyngier } 20683a49794SMarc Zyngier 20783a49794SMarc Zyngier static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) 20883a49794SMarc Zyngier { 2099586a2eaSShannon Zhao u32 mode; 21083a49794SMarc Zyngier 2119586a2eaSShannon Zhao if (vcpu_mode_is_32bit(vcpu)) { 212256c0960SMark Rutland mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK; 213256c0960SMark Rutland return mode > PSR_AA32_MODE_USR; 2149586a2eaSShannon Zhao } 2159586a2eaSShannon Zhao 2169586a2eaSShannon Zhao mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK; 217b547631fSMarc Zyngier 21883a49794SMarc Zyngier return mode != PSR_MODE_EL0t; 21983a49794SMarc Zyngier } 22083a49794SMarc Zyngier 22183a49794SMarc Zyngier static inline u32 kvm_vcpu_get_hsr(const struct kvm_vcpu *vcpu) 22283a49794SMarc Zyngier { 22383a49794SMarc Zyngier return vcpu->arch.fault.esr_el2; 22483a49794SMarc Zyngier } 22583a49794SMarc Zyngier 2263e51d435SMarc Zyngier static inline int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu) 2273e51d435SMarc Zyngier { 2283e51d435SMarc Zyngier u32 esr = kvm_vcpu_get_hsr(vcpu); 2293e51d435SMarc Zyngier 2303e51d435SMarc Zyngier if (esr & ESR_ELx_CV) 2313e51d435SMarc Zyngier return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT; 2323e51d435SMarc Zyngier 2333e51d435SMarc Zyngier return -1; 2343e51d435SMarc Zyngier } 2353e51d435SMarc Zyngier 23683a49794SMarc Zyngier static inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu) 23783a49794SMarc Zyngier { 23883a49794SMarc Zyngier return vcpu->arch.fault.far_el2; 23983a49794SMarc Zyngier } 24083a49794SMarc Zyngier 24183a49794SMarc Zyngier static inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu) 24283a49794SMarc Zyngier { 24383a49794SMarc Zyngier return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8; 24483a49794SMarc Zyngier } 24583a49794SMarc Zyngier 2460067df41SJames Morse static inline u64 kvm_vcpu_get_disr(const struct kvm_vcpu *vcpu) 2470067df41SJames Morse { 2480067df41SJames Morse return vcpu->arch.fault.disr_el1; 2490067df41SJames Morse } 2500067df41SJames Morse 2510d97f884SWei Huang static inline u32 kvm_vcpu_hvc_get_imm(const struct kvm_vcpu *vcpu) 2520d97f884SWei Huang { 2531c6007d5SPaolo Bonzini return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_xVC_IMM_MASK; 2540d97f884SWei Huang } 2550d97f884SWei Huang 25683a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu) 25783a49794SMarc Zyngier { 258c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_ISV); 25983a49794SMarc Zyngier } 26083a49794SMarc Zyngier 26183a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu) 26283a49794SMarc Zyngier { 263c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SSE); 26483a49794SMarc Zyngier } 26583a49794SMarc Zyngier 26683a49794SMarc Zyngier static inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu) 26783a49794SMarc Zyngier { 268c6d01a94SMark Rutland return (kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SRT_MASK) >> ESR_ELx_SRT_SHIFT; 26983a49794SMarc Zyngier } 27083a49794SMarc Zyngier 27183a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu) 27283a49794SMarc Zyngier { 273c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_S1PTW); 27483a49794SMarc Zyngier } 27583a49794SMarc Zyngier 27660e21a0eSWill Deacon static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu) 27760e21a0eSWill Deacon { 27860e21a0eSWill Deacon return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR) || 27960e21a0eSWill Deacon kvm_vcpu_dabt_iss1tw(vcpu); /* AF/DBM update */ 28060e21a0eSWill Deacon } 28160e21a0eSWill Deacon 28257c841f1SMarc Zyngier static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu) 28357c841f1SMarc Zyngier { 28457c841f1SMarc Zyngier return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_CM); 28557c841f1SMarc Zyngier } 28657c841f1SMarc Zyngier 28783a49794SMarc Zyngier static inline int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu) 28883a49794SMarc Zyngier { 289c6d01a94SMark Rutland return 1 << ((kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT); 29083a49794SMarc Zyngier } 29183a49794SMarc Zyngier 29283a49794SMarc Zyngier /* This one is not specific to Data Abort */ 29383a49794SMarc Zyngier static inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu) 29483a49794SMarc Zyngier { 295c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_IL); 29683a49794SMarc Zyngier } 29783a49794SMarc Zyngier 29883a49794SMarc Zyngier static inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu) 29983a49794SMarc Zyngier { 300561454e2SMark Rutland return ESR_ELx_EC(kvm_vcpu_get_hsr(vcpu)); 30183a49794SMarc Zyngier } 30283a49794SMarc Zyngier 30383a49794SMarc Zyngier static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu) 30483a49794SMarc Zyngier { 305c6d01a94SMark Rutland return kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_IABT_LOW; 30683a49794SMarc Zyngier } 30783a49794SMarc Zyngier 30883a49794SMarc Zyngier static inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu) 30983a49794SMarc Zyngier { 310c6d01a94SMark Rutland return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC; 3110496daa5SChristoffer Dall } 3120496daa5SChristoffer Dall 3130496daa5SChristoffer Dall static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) 3140496daa5SChristoffer Dall { 315c6d01a94SMark Rutland return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC_TYPE; 31683a49794SMarc Zyngier } 31783a49794SMarc Zyngier 318bb428921SJames Morse static inline bool kvm_vcpu_dabt_isextabt(const struct kvm_vcpu *vcpu) 319bb428921SJames Morse { 320a2b83133SDongjiu Geng switch (kvm_vcpu_trap_get_fault(vcpu)) { 321bb428921SJames Morse case FSC_SEA: 322bb428921SJames Morse case FSC_SEA_TTW0: 323bb428921SJames Morse case FSC_SEA_TTW1: 324bb428921SJames Morse case FSC_SEA_TTW2: 325bb428921SJames Morse case FSC_SEA_TTW3: 326bb428921SJames Morse case FSC_SECC: 327bb428921SJames Morse case FSC_SECC_TTW0: 328bb428921SJames Morse case FSC_SECC_TTW1: 329bb428921SJames Morse case FSC_SECC_TTW2: 330bb428921SJames Morse case FSC_SECC_TTW3: 331bb428921SJames Morse return true; 332bb428921SJames Morse default: 333bb428921SJames Morse return false; 334bb428921SJames Morse } 335bb428921SJames Morse } 336bb428921SJames Morse 337c667186fSMarc Zyngier static inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) 338c667186fSMarc Zyngier { 339c667186fSMarc Zyngier u32 esr = kvm_vcpu_get_hsr(vcpu); 3401c839141SAnshuman Khandual return ESR_ELx_SYS64_ISS_RT(esr); 341c667186fSMarc Zyngier } 342c667186fSMarc Zyngier 34364cf98faSChristoffer Dall static inline bool kvm_is_write_fault(struct kvm_vcpu *vcpu) 34464cf98faSChristoffer Dall { 34564cf98faSChristoffer Dall if (kvm_vcpu_trap_is_iabt(vcpu)) 34664cf98faSChristoffer Dall return false; 34764cf98faSChristoffer Dall 34864cf98faSChristoffer Dall return kvm_vcpu_dabt_iswrite(vcpu); 34964cf98faSChristoffer Dall } 35064cf98faSChristoffer Dall 3514429fc64SAndre Przywara static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) 35279c64880SMarc Zyngier { 3538d404c4cSChristoffer Dall return vcpu_read_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; 35479c64880SMarc Zyngier } 35579c64880SMarc Zyngier 356ce94fe93SMarc Zyngier static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) 357ce94fe93SMarc Zyngier { 3588d404c4cSChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 359256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_E_BIT; 3608d404c4cSChristoffer Dall } else { 3618d404c4cSChristoffer Dall u64 sctlr = vcpu_read_sys_reg(vcpu, SCTLR_EL1); 3628d404c4cSChristoffer Dall sctlr |= (1 << 25); 3631975fa56SJames Morse vcpu_write_sys_reg(vcpu, sctlr, SCTLR_EL1); 3648d404c4cSChristoffer Dall } 365ce94fe93SMarc Zyngier } 366ce94fe93SMarc Zyngier 3676d89d2d9SMarc Zyngier static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu) 3686d89d2d9SMarc Zyngier { 3696d89d2d9SMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 370256c0960SMark Rutland return !!(*vcpu_cpsr(vcpu) & PSR_AA32_E_BIT); 3716d89d2d9SMarc Zyngier 3728d404c4cSChristoffer Dall return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & (1 << 25)); 3736d89d2d9SMarc Zyngier } 3746d89d2d9SMarc Zyngier 3756d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, 3766d89d2d9SMarc Zyngier unsigned long data, 3776d89d2d9SMarc Zyngier unsigned int len) 3786d89d2d9SMarc Zyngier { 3796d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 3806d89d2d9SMarc Zyngier switch (len) { 3816d89d2d9SMarc Zyngier case 1: 3826d89d2d9SMarc Zyngier return data & 0xff; 3836d89d2d9SMarc Zyngier case 2: 3846d89d2d9SMarc Zyngier return be16_to_cpu(data & 0xffff); 3856d89d2d9SMarc Zyngier case 4: 3866d89d2d9SMarc Zyngier return be32_to_cpu(data & 0xffffffff); 3876d89d2d9SMarc Zyngier default: 3886d89d2d9SMarc Zyngier return be64_to_cpu(data); 3896d89d2d9SMarc Zyngier } 390b3007086SVictor Kamensky } else { 391b3007086SVictor Kamensky switch (len) { 392b3007086SVictor Kamensky case 1: 393b3007086SVictor Kamensky return data & 0xff; 394b3007086SVictor Kamensky case 2: 395b3007086SVictor Kamensky return le16_to_cpu(data & 0xffff); 396b3007086SVictor Kamensky case 4: 397b3007086SVictor Kamensky return le32_to_cpu(data & 0xffffffff); 398b3007086SVictor Kamensky default: 399b3007086SVictor Kamensky return le64_to_cpu(data); 400b3007086SVictor Kamensky } 4016d89d2d9SMarc Zyngier } 4026d89d2d9SMarc Zyngier 4036d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4046d89d2d9SMarc Zyngier } 4056d89d2d9SMarc Zyngier 4066d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, 4076d89d2d9SMarc Zyngier unsigned long data, 4086d89d2d9SMarc Zyngier unsigned int len) 4096d89d2d9SMarc Zyngier { 4106d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4116d89d2d9SMarc Zyngier switch (len) { 4126d89d2d9SMarc Zyngier case 1: 4136d89d2d9SMarc Zyngier return data & 0xff; 4146d89d2d9SMarc Zyngier case 2: 4156d89d2d9SMarc Zyngier return cpu_to_be16(data & 0xffff); 4166d89d2d9SMarc Zyngier case 4: 4176d89d2d9SMarc Zyngier return cpu_to_be32(data & 0xffffffff); 4186d89d2d9SMarc Zyngier default: 4196d89d2d9SMarc Zyngier return cpu_to_be64(data); 4206d89d2d9SMarc Zyngier } 421b3007086SVictor Kamensky } else { 422b3007086SVictor Kamensky switch (len) { 423b3007086SVictor Kamensky case 1: 424b3007086SVictor Kamensky return data & 0xff; 425b3007086SVictor Kamensky case 2: 426b3007086SVictor Kamensky return cpu_to_le16(data & 0xffff); 427b3007086SVictor Kamensky case 4: 428b3007086SVictor Kamensky return cpu_to_le32(data & 0xffffffff); 429b3007086SVictor Kamensky default: 430b3007086SVictor Kamensky return cpu_to_le64(data); 431b3007086SVictor Kamensky } 4326d89d2d9SMarc Zyngier } 4336d89d2d9SMarc Zyngier 4346d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4356d89d2d9SMarc Zyngier } 4366d89d2d9SMarc Zyngier 437bd7d95caSMark Rutland static inline void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr) 438bd7d95caSMark Rutland { 439bd7d95caSMark Rutland if (vcpu_mode_is_32bit(vcpu)) 440bd7d95caSMark Rutland kvm_skip_instr32(vcpu, is_wide_instr); 441bd7d95caSMark Rutland else 442bd7d95caSMark Rutland *vcpu_pc(vcpu) += 4; 443bd7d95caSMark Rutland 444bd7d95caSMark Rutland /* advance the singlestep state machine */ 445bd7d95caSMark Rutland *vcpu_cpsr(vcpu) &= ~DBG_SPSR_SS; 446bd7d95caSMark Rutland } 447bd7d95caSMark Rutland 448bd7d95caSMark Rutland /* 449bd7d95caSMark Rutland * Skip an instruction which has been emulated at hyp while most guest sysregs 450bd7d95caSMark Rutland * are live. 451bd7d95caSMark Rutland */ 452bd7d95caSMark Rutland static inline void __hyp_text __kvm_skip_instr(struct kvm_vcpu *vcpu) 453bd7d95caSMark Rutland { 454bd7d95caSMark Rutland *vcpu_pc(vcpu) = read_sysreg_el2(elr); 455bd7d95caSMark Rutland vcpu->arch.ctxt.gp_regs.regs.pstate = read_sysreg_el2(spsr); 456bd7d95caSMark Rutland 457bd7d95caSMark Rutland kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu)); 458bd7d95caSMark Rutland 459bd7d95caSMark Rutland write_sysreg_el2(vcpu->arch.ctxt.gp_regs.regs.pstate, spsr); 460bd7d95caSMark Rutland write_sysreg_el2(*vcpu_pc(vcpu), elr); 461bd7d95caSMark Rutland } 462bd7d95caSMark Rutland 46383a49794SMarc Zyngier #endif /* __ARM64_KVM_EMULATE_H__ */ 464