183a49794SMarc Zyngier /* 283a49794SMarc Zyngier * Copyright (C) 2012,2013 - ARM Ltd 383a49794SMarc Zyngier * Author: Marc Zyngier <marc.zyngier@arm.com> 483a49794SMarc Zyngier * 583a49794SMarc Zyngier * Derived from arch/arm/include/kvm_emulate.h 683a49794SMarc Zyngier * Copyright (C) 2012 - Virtual Open Systems and Columbia University 783a49794SMarc Zyngier * Author: Christoffer Dall <c.dall@virtualopensystems.com> 883a49794SMarc Zyngier * 983a49794SMarc Zyngier * This program is free software; you can redistribute it and/or modify 1083a49794SMarc Zyngier * it under the terms of the GNU General Public License version 2 as 1183a49794SMarc Zyngier * published by the Free Software Foundation. 1283a49794SMarc Zyngier * 1383a49794SMarc Zyngier * This program is distributed in the hope that it will be useful, 1483a49794SMarc Zyngier * but WITHOUT ANY WARRANTY; without even the implied warranty of 1583a49794SMarc Zyngier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1683a49794SMarc Zyngier * GNU General Public License for more details. 1783a49794SMarc Zyngier * 1883a49794SMarc Zyngier * You should have received a copy of the GNU General Public License 1983a49794SMarc Zyngier * along with this program. If not, see <http://www.gnu.org/licenses/>. 2083a49794SMarc Zyngier */ 2183a49794SMarc Zyngier 2283a49794SMarc Zyngier #ifndef __ARM64_KVM_EMULATE_H__ 2383a49794SMarc Zyngier #define __ARM64_KVM_EMULATE_H__ 2483a49794SMarc Zyngier 2583a49794SMarc Zyngier #include <linux/kvm_host.h> 26c6d01a94SMark Rutland 27bd7d95caSMark Rutland #include <asm/debug-monitors.h> 28c6d01a94SMark Rutland #include <asm/esr.h> 2983a49794SMarc Zyngier #include <asm/kvm_arm.h> 3000536ec4SChristoffer Dall #include <asm/kvm_hyp.h> 3183a49794SMarc Zyngier #include <asm/kvm_mmio.h> 3283a49794SMarc Zyngier #include <asm/ptrace.h> 334429fc64SAndre Przywara #include <asm/cputype.h> 3468908bf7SMarc Zyngier #include <asm/virt.h> 3583a49794SMarc Zyngier 36b547631fSMarc Zyngier unsigned long *vcpu_reg32(const struct kvm_vcpu *vcpu, u8 reg_num); 37a8928195SChristoffer Dall unsigned long vcpu_read_spsr32(const struct kvm_vcpu *vcpu); 38a8928195SChristoffer Dall void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v); 39b547631fSMarc Zyngier 4027b190bdSMarc Zyngier bool kvm_condition_valid32(const struct kvm_vcpu *vcpu); 4127b190bdSMarc Zyngier void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr); 4227b190bdSMarc Zyngier 4383a49794SMarc Zyngier void kvm_inject_undefined(struct kvm_vcpu *vcpu); 4410cf3390SMarc Zyngier void kvm_inject_vabt(struct kvm_vcpu *vcpu); 4583a49794SMarc Zyngier void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); 4683a49794SMarc Zyngier void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); 4774a64a98SMarc Zyngier void kvm_inject_undef32(struct kvm_vcpu *vcpu); 4874a64a98SMarc Zyngier void kvm_inject_dabt32(struct kvm_vcpu *vcpu, unsigned long addr); 4974a64a98SMarc Zyngier void kvm_inject_pabt32(struct kvm_vcpu *vcpu, unsigned long addr); 5083a49794SMarc Zyngier 51e72341c5SChristoffer Dall static inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 52e72341c5SChristoffer Dall { 53e72341c5SChristoffer Dall return !(vcpu->arch.hcr_el2 & HCR_RW); 54e72341c5SChristoffer Dall } 55e72341c5SChristoffer Dall 56b856a591SChristoffer Dall static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) 57b856a591SChristoffer Dall { 58b856a591SChristoffer Dall vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; 5968908bf7SMarc Zyngier if (is_kernel_in_hyp_mode()) 6068908bf7SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_E2H; 61558daf69SDongjiu Geng if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) { 62558daf69SDongjiu Geng /* route synchronous external abort exceptions to EL2 */ 63558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TEA; 64558daf69SDongjiu Geng /* trap error record accesses */ 65558daf69SDongjiu Geng vcpu->arch.hcr_el2 |= HCR_TERR; 66558daf69SDongjiu Geng } 67e48d53a9SMarc Zyngier if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) 68e48d53a9SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_FWB; 69558daf69SDongjiu Geng 70801f6772SMarc Zyngier if (test_bit(KVM_ARM_VCPU_EL1_32BIT, vcpu->arch.features)) 71801f6772SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_RW; 72005781beSDave Martin 73005781beSDave Martin /* 74005781beSDave Martin * TID3: trap feature register accesses that we virtualise. 75005781beSDave Martin * For now this is conditional, since no AArch32 feature regs 76005781beSDave Martin * are currently virtualised. 77005781beSDave Martin */ 78e72341c5SChristoffer Dall if (!vcpu_el1_is_32bit(vcpu)) 79005781beSDave Martin vcpu->arch.hcr_el2 |= HCR_TID3; 80f7f2b15cSArd Biesheuvel 81f7f2b15cSArd Biesheuvel if (cpus_have_const_cap(ARM64_MISMATCHED_CACHE_TYPE)) 82f7f2b15cSArd Biesheuvel vcpu->arch.hcr_el2 |= HCR_TID2; 83b856a591SChristoffer Dall } 84b856a591SChristoffer Dall 853df59d8dSChristoffer Dall static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) 863c1e7165SMarc Zyngier { 873df59d8dSChristoffer Dall return (unsigned long *)&vcpu->arch.hcr_el2; 883c1e7165SMarc Zyngier } 893c1e7165SMarc Zyngier 90de737089SMarc Zyngier static inline void vcpu_clear_wfe_traps(struct kvm_vcpu *vcpu) 91de737089SMarc Zyngier { 92de737089SMarc Zyngier vcpu->arch.hcr_el2 &= ~HCR_TWE; 93de737089SMarc Zyngier } 94de737089SMarc Zyngier 95de737089SMarc Zyngier static inline void vcpu_set_wfe_traps(struct kvm_vcpu *vcpu) 96de737089SMarc Zyngier { 97de737089SMarc Zyngier vcpu->arch.hcr_el2 |= HCR_TWE; 98de737089SMarc Zyngier } 99de737089SMarc Zyngier 100b7b27facSDongjiu Geng static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu) 101b7b27facSDongjiu Geng { 102b7b27facSDongjiu Geng return vcpu->arch.vsesr_el2; 103b7b27facSDongjiu Geng } 104b7b27facSDongjiu Geng 1054715c14bSJames Morse static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr) 1064715c14bSJames Morse { 1074715c14bSJames Morse vcpu->arch.vsesr_el2 = vsesr; 1084715c14bSJames Morse } 1094715c14bSJames Morse 11083a49794SMarc Zyngier static inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu) 11183a49794SMarc Zyngier { 11283a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pc; 11383a49794SMarc Zyngier } 11483a49794SMarc Zyngier 1156d4bd909SChristoffer Dall static inline unsigned long *__vcpu_elr_el1(const struct kvm_vcpu *vcpu) 11683a49794SMarc Zyngier { 11783a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->elr_el1; 11883a49794SMarc Zyngier } 11983a49794SMarc Zyngier 1206d4bd909SChristoffer Dall static inline unsigned long vcpu_read_elr_el1(const struct kvm_vcpu *vcpu) 1216d4bd909SChristoffer Dall { 1226d4bd909SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 1236d4bd909SChristoffer Dall return read_sysreg_el1(elr); 1246d4bd909SChristoffer Dall else 1256d4bd909SChristoffer Dall return *__vcpu_elr_el1(vcpu); 1266d4bd909SChristoffer Dall } 1276d4bd909SChristoffer Dall 1286d4bd909SChristoffer Dall static inline void vcpu_write_elr_el1(const struct kvm_vcpu *vcpu, unsigned long v) 1296d4bd909SChristoffer Dall { 1306d4bd909SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 1316d4bd909SChristoffer Dall write_sysreg_el1(v, elr); 1326d4bd909SChristoffer Dall else 1336d4bd909SChristoffer Dall *__vcpu_elr_el1(vcpu) = v; 1346d4bd909SChristoffer Dall } 1356d4bd909SChristoffer Dall 13683a49794SMarc Zyngier static inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu) 13783a49794SMarc Zyngier { 13883a49794SMarc Zyngier return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pstate; 13983a49794SMarc Zyngier } 14083a49794SMarc Zyngier 14183a49794SMarc Zyngier static inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu) 14283a49794SMarc Zyngier { 143b547631fSMarc Zyngier return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT); 14483a49794SMarc Zyngier } 14583a49794SMarc Zyngier 14683a49794SMarc Zyngier static inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu) 14783a49794SMarc Zyngier { 14827b190bdSMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 14927b190bdSMarc Zyngier return kvm_condition_valid32(vcpu); 15027b190bdSMarc Zyngier 15127b190bdSMarc Zyngier return true; 15283a49794SMarc Zyngier } 15383a49794SMarc Zyngier 15483a49794SMarc Zyngier static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) 15583a49794SMarc Zyngier { 156256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_T_BIT; 15783a49794SMarc Zyngier } 15883a49794SMarc Zyngier 159c0f09634SMarc Zyngier /* 160f6be563aSPavel Fedin * vcpu_get_reg and vcpu_set_reg should always be passed a register number 161f6be563aSPavel Fedin * coming from a read of ESR_EL2. Otherwise, it may give the wrong result on 162f6be563aSPavel Fedin * AArch32 with banked registers. 163c0f09634SMarc Zyngier */ 164bc45a516SPavel Fedin static inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu, 165bc45a516SPavel Fedin u8 reg_num) 166bc45a516SPavel Fedin { 167bc45a516SPavel Fedin return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs.regs[reg_num]; 168bc45a516SPavel Fedin } 169bc45a516SPavel Fedin 170bc45a516SPavel Fedin static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, 171bc45a516SPavel Fedin unsigned long val) 172bc45a516SPavel Fedin { 173bc45a516SPavel Fedin if (reg_num != 31) 174bc45a516SPavel Fedin vcpu_gp_regs(vcpu)->regs.regs[reg_num] = val; 175bc45a516SPavel Fedin } 176bc45a516SPavel Fedin 17700536ec4SChristoffer Dall static inline unsigned long vcpu_read_spsr(const struct kvm_vcpu *vcpu) 17883a49794SMarc Zyngier { 179a8928195SChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) 180a8928195SChristoffer Dall return vcpu_read_spsr32(vcpu); 18100536ec4SChristoffer Dall 18200536ec4SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 18300536ec4SChristoffer Dall return read_sysreg_el1(spsr); 18400536ec4SChristoffer Dall else 185a8928195SChristoffer Dall return vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1]; 18600536ec4SChristoffer Dall } 18700536ec4SChristoffer Dall 188a8928195SChristoffer Dall static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v) 18900536ec4SChristoffer Dall { 19000536ec4SChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 191a8928195SChristoffer Dall vcpu_write_spsr32(vcpu, v); 19200536ec4SChristoffer Dall return; 19300536ec4SChristoffer Dall } 19400536ec4SChristoffer Dall 19500536ec4SChristoffer Dall if (vcpu->arch.sysregs_loaded_on_cpu) 19600536ec4SChristoffer Dall write_sysreg_el1(v, spsr); 19700536ec4SChristoffer Dall else 198a8928195SChristoffer Dall vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1] = v; 19983a49794SMarc Zyngier } 20083a49794SMarc Zyngier 20183a49794SMarc Zyngier static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) 20283a49794SMarc Zyngier { 2039586a2eaSShannon Zhao u32 mode; 20483a49794SMarc Zyngier 2059586a2eaSShannon Zhao if (vcpu_mode_is_32bit(vcpu)) { 206256c0960SMark Rutland mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK; 207256c0960SMark Rutland return mode > PSR_AA32_MODE_USR; 2089586a2eaSShannon Zhao } 2099586a2eaSShannon Zhao 2109586a2eaSShannon Zhao mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK; 211b547631fSMarc Zyngier 21283a49794SMarc Zyngier return mode != PSR_MODE_EL0t; 21383a49794SMarc Zyngier } 21483a49794SMarc Zyngier 21583a49794SMarc Zyngier static inline u32 kvm_vcpu_get_hsr(const struct kvm_vcpu *vcpu) 21683a49794SMarc Zyngier { 21783a49794SMarc Zyngier return vcpu->arch.fault.esr_el2; 21883a49794SMarc Zyngier } 21983a49794SMarc Zyngier 2203e51d435SMarc Zyngier static inline int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu) 2213e51d435SMarc Zyngier { 2223e51d435SMarc Zyngier u32 esr = kvm_vcpu_get_hsr(vcpu); 2233e51d435SMarc Zyngier 2243e51d435SMarc Zyngier if (esr & ESR_ELx_CV) 2253e51d435SMarc Zyngier return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT; 2263e51d435SMarc Zyngier 2273e51d435SMarc Zyngier return -1; 2283e51d435SMarc Zyngier } 2293e51d435SMarc Zyngier 23083a49794SMarc Zyngier static inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu) 23183a49794SMarc Zyngier { 23283a49794SMarc Zyngier return vcpu->arch.fault.far_el2; 23383a49794SMarc Zyngier } 23483a49794SMarc Zyngier 23583a49794SMarc Zyngier static inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu) 23683a49794SMarc Zyngier { 23783a49794SMarc Zyngier return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8; 23883a49794SMarc Zyngier } 23983a49794SMarc Zyngier 2400067df41SJames Morse static inline u64 kvm_vcpu_get_disr(const struct kvm_vcpu *vcpu) 2410067df41SJames Morse { 2420067df41SJames Morse return vcpu->arch.fault.disr_el1; 2430067df41SJames Morse } 2440067df41SJames Morse 2450d97f884SWei Huang static inline u32 kvm_vcpu_hvc_get_imm(const struct kvm_vcpu *vcpu) 2460d97f884SWei Huang { 2471c6007d5SPaolo Bonzini return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_xVC_IMM_MASK; 2480d97f884SWei Huang } 2490d97f884SWei Huang 25083a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu) 25183a49794SMarc Zyngier { 252c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_ISV); 25383a49794SMarc Zyngier } 25483a49794SMarc Zyngier 25583a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu) 25683a49794SMarc Zyngier { 257c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SSE); 25883a49794SMarc Zyngier } 25983a49794SMarc Zyngier 26083a49794SMarc Zyngier static inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu) 26183a49794SMarc Zyngier { 262c6d01a94SMark Rutland return (kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SRT_MASK) >> ESR_ELx_SRT_SHIFT; 26383a49794SMarc Zyngier } 26483a49794SMarc Zyngier 26583a49794SMarc Zyngier static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu) 26683a49794SMarc Zyngier { 267c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_S1PTW); 26883a49794SMarc Zyngier } 26983a49794SMarc Zyngier 27060e21a0eSWill Deacon static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu) 27160e21a0eSWill Deacon { 27260e21a0eSWill Deacon return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR) || 27360e21a0eSWill Deacon kvm_vcpu_dabt_iss1tw(vcpu); /* AF/DBM update */ 27460e21a0eSWill Deacon } 27560e21a0eSWill Deacon 27657c841f1SMarc Zyngier static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu) 27757c841f1SMarc Zyngier { 27857c841f1SMarc Zyngier return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_CM); 27957c841f1SMarc Zyngier } 28057c841f1SMarc Zyngier 28183a49794SMarc Zyngier static inline int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu) 28283a49794SMarc Zyngier { 283c6d01a94SMark Rutland return 1 << ((kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT); 28483a49794SMarc Zyngier } 28583a49794SMarc Zyngier 28683a49794SMarc Zyngier /* This one is not specific to Data Abort */ 28783a49794SMarc Zyngier static inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu) 28883a49794SMarc Zyngier { 289c6d01a94SMark Rutland return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_IL); 29083a49794SMarc Zyngier } 29183a49794SMarc Zyngier 29283a49794SMarc Zyngier static inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu) 29383a49794SMarc Zyngier { 294561454e2SMark Rutland return ESR_ELx_EC(kvm_vcpu_get_hsr(vcpu)); 29583a49794SMarc Zyngier } 29683a49794SMarc Zyngier 29783a49794SMarc Zyngier static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu) 29883a49794SMarc Zyngier { 299c6d01a94SMark Rutland return kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_IABT_LOW; 30083a49794SMarc Zyngier } 30183a49794SMarc Zyngier 30283a49794SMarc Zyngier static inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu) 30383a49794SMarc Zyngier { 304c6d01a94SMark Rutland return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC; 3050496daa5SChristoffer Dall } 3060496daa5SChristoffer Dall 3070496daa5SChristoffer Dall static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) 3080496daa5SChristoffer Dall { 309c6d01a94SMark Rutland return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC_TYPE; 31083a49794SMarc Zyngier } 31183a49794SMarc Zyngier 312bb428921SJames Morse static inline bool kvm_vcpu_dabt_isextabt(const struct kvm_vcpu *vcpu) 313bb428921SJames Morse { 314a2b83133SDongjiu Geng switch (kvm_vcpu_trap_get_fault(vcpu)) { 315bb428921SJames Morse case FSC_SEA: 316bb428921SJames Morse case FSC_SEA_TTW0: 317bb428921SJames Morse case FSC_SEA_TTW1: 318bb428921SJames Morse case FSC_SEA_TTW2: 319bb428921SJames Morse case FSC_SEA_TTW3: 320bb428921SJames Morse case FSC_SECC: 321bb428921SJames Morse case FSC_SECC_TTW0: 322bb428921SJames Morse case FSC_SECC_TTW1: 323bb428921SJames Morse case FSC_SECC_TTW2: 324bb428921SJames Morse case FSC_SECC_TTW3: 325bb428921SJames Morse return true; 326bb428921SJames Morse default: 327bb428921SJames Morse return false; 328bb428921SJames Morse } 329bb428921SJames Morse } 330bb428921SJames Morse 331c667186fSMarc Zyngier static inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) 332c667186fSMarc Zyngier { 333c667186fSMarc Zyngier u32 esr = kvm_vcpu_get_hsr(vcpu); 3341c839141SAnshuman Khandual return ESR_ELx_SYS64_ISS_RT(esr); 335c667186fSMarc Zyngier } 336c667186fSMarc Zyngier 33764cf98faSChristoffer Dall static inline bool kvm_is_write_fault(struct kvm_vcpu *vcpu) 33864cf98faSChristoffer Dall { 33964cf98faSChristoffer Dall if (kvm_vcpu_trap_is_iabt(vcpu)) 34064cf98faSChristoffer Dall return false; 34164cf98faSChristoffer Dall 34264cf98faSChristoffer Dall return kvm_vcpu_dabt_iswrite(vcpu); 34364cf98faSChristoffer Dall } 34464cf98faSChristoffer Dall 3454429fc64SAndre Przywara static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) 34679c64880SMarc Zyngier { 3478d404c4cSChristoffer Dall return vcpu_read_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; 34879c64880SMarc Zyngier } 34979c64880SMarc Zyngier 350ce94fe93SMarc Zyngier static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) 351ce94fe93SMarc Zyngier { 3528d404c4cSChristoffer Dall if (vcpu_mode_is_32bit(vcpu)) { 353256c0960SMark Rutland *vcpu_cpsr(vcpu) |= PSR_AA32_E_BIT; 3548d404c4cSChristoffer Dall } else { 3558d404c4cSChristoffer Dall u64 sctlr = vcpu_read_sys_reg(vcpu, SCTLR_EL1); 3568d404c4cSChristoffer Dall sctlr |= (1 << 25); 3571975fa56SJames Morse vcpu_write_sys_reg(vcpu, sctlr, SCTLR_EL1); 3588d404c4cSChristoffer Dall } 359ce94fe93SMarc Zyngier } 360ce94fe93SMarc Zyngier 3616d89d2d9SMarc Zyngier static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu) 3626d89d2d9SMarc Zyngier { 3636d89d2d9SMarc Zyngier if (vcpu_mode_is_32bit(vcpu)) 364256c0960SMark Rutland return !!(*vcpu_cpsr(vcpu) & PSR_AA32_E_BIT); 3656d89d2d9SMarc Zyngier 3668d404c4cSChristoffer Dall return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & (1 << 25)); 3676d89d2d9SMarc Zyngier } 3686d89d2d9SMarc Zyngier 3696d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, 3706d89d2d9SMarc Zyngier unsigned long data, 3716d89d2d9SMarc Zyngier unsigned int len) 3726d89d2d9SMarc Zyngier { 3736d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 3746d89d2d9SMarc Zyngier switch (len) { 3756d89d2d9SMarc Zyngier case 1: 3766d89d2d9SMarc Zyngier return data & 0xff; 3776d89d2d9SMarc Zyngier case 2: 3786d89d2d9SMarc Zyngier return be16_to_cpu(data & 0xffff); 3796d89d2d9SMarc Zyngier case 4: 3806d89d2d9SMarc Zyngier return be32_to_cpu(data & 0xffffffff); 3816d89d2d9SMarc Zyngier default: 3826d89d2d9SMarc Zyngier return be64_to_cpu(data); 3836d89d2d9SMarc Zyngier } 384b3007086SVictor Kamensky } else { 385b3007086SVictor Kamensky switch (len) { 386b3007086SVictor Kamensky case 1: 387b3007086SVictor Kamensky return data & 0xff; 388b3007086SVictor Kamensky case 2: 389b3007086SVictor Kamensky return le16_to_cpu(data & 0xffff); 390b3007086SVictor Kamensky case 4: 391b3007086SVictor Kamensky return le32_to_cpu(data & 0xffffffff); 392b3007086SVictor Kamensky default: 393b3007086SVictor Kamensky return le64_to_cpu(data); 394b3007086SVictor Kamensky } 3956d89d2d9SMarc Zyngier } 3966d89d2d9SMarc Zyngier 3976d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 3986d89d2d9SMarc Zyngier } 3996d89d2d9SMarc Zyngier 4006d89d2d9SMarc Zyngier static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, 4016d89d2d9SMarc Zyngier unsigned long data, 4026d89d2d9SMarc Zyngier unsigned int len) 4036d89d2d9SMarc Zyngier { 4046d89d2d9SMarc Zyngier if (kvm_vcpu_is_be(vcpu)) { 4056d89d2d9SMarc Zyngier switch (len) { 4066d89d2d9SMarc Zyngier case 1: 4076d89d2d9SMarc Zyngier return data & 0xff; 4086d89d2d9SMarc Zyngier case 2: 4096d89d2d9SMarc Zyngier return cpu_to_be16(data & 0xffff); 4106d89d2d9SMarc Zyngier case 4: 4116d89d2d9SMarc Zyngier return cpu_to_be32(data & 0xffffffff); 4126d89d2d9SMarc Zyngier default: 4136d89d2d9SMarc Zyngier return cpu_to_be64(data); 4146d89d2d9SMarc Zyngier } 415b3007086SVictor Kamensky } else { 416b3007086SVictor Kamensky switch (len) { 417b3007086SVictor Kamensky case 1: 418b3007086SVictor Kamensky return data & 0xff; 419b3007086SVictor Kamensky case 2: 420b3007086SVictor Kamensky return cpu_to_le16(data & 0xffff); 421b3007086SVictor Kamensky case 4: 422b3007086SVictor Kamensky return cpu_to_le32(data & 0xffffffff); 423b3007086SVictor Kamensky default: 424b3007086SVictor Kamensky return cpu_to_le64(data); 425b3007086SVictor Kamensky } 4266d89d2d9SMarc Zyngier } 4276d89d2d9SMarc Zyngier 4286d89d2d9SMarc Zyngier return data; /* Leave LE untouched */ 4296d89d2d9SMarc Zyngier } 4306d89d2d9SMarc Zyngier 431bd7d95caSMark Rutland static inline void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr) 432bd7d95caSMark Rutland { 433bd7d95caSMark Rutland if (vcpu_mode_is_32bit(vcpu)) 434bd7d95caSMark Rutland kvm_skip_instr32(vcpu, is_wide_instr); 435bd7d95caSMark Rutland else 436bd7d95caSMark Rutland *vcpu_pc(vcpu) += 4; 437bd7d95caSMark Rutland 438bd7d95caSMark Rutland /* advance the singlestep state machine */ 439bd7d95caSMark Rutland *vcpu_cpsr(vcpu) &= ~DBG_SPSR_SS; 440bd7d95caSMark Rutland } 441bd7d95caSMark Rutland 442bd7d95caSMark Rutland /* 443bd7d95caSMark Rutland * Skip an instruction which has been emulated at hyp while most guest sysregs 444bd7d95caSMark Rutland * are live. 445bd7d95caSMark Rutland */ 446bd7d95caSMark Rutland static inline void __hyp_text __kvm_skip_instr(struct kvm_vcpu *vcpu) 447bd7d95caSMark Rutland { 448bd7d95caSMark Rutland *vcpu_pc(vcpu) = read_sysreg_el2(elr); 449bd7d95caSMark Rutland vcpu->arch.ctxt.gp_regs.regs.pstate = read_sysreg_el2(spsr); 450bd7d95caSMark Rutland 451bd7d95caSMark Rutland kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu)); 452bd7d95caSMark Rutland 453bd7d95caSMark Rutland write_sysreg_el2(vcpu->arch.ctxt.gp_regs.regs.pstate, spsr); 454bd7d95caSMark Rutland write_sysreg_el2(*vcpu_pc(vcpu), elr); 455bd7d95caSMark Rutland } 456bd7d95caSMark Rutland 45783a49794SMarc Zyngier #endif /* __ARM64_KVM_EMULATE_H__ */ 458