14f8d6632SMarc Zyngier /* 24f8d6632SMarc Zyngier * Copyright (C) 2012,2013 - ARM Ltd 34f8d6632SMarc Zyngier * Author: Marc Zyngier <marc.zyngier@arm.com> 44f8d6632SMarc Zyngier * 54f8d6632SMarc Zyngier * Derived from arch/arm/include/asm/kvm_host.h: 64f8d6632SMarc Zyngier * Copyright (C) 2012 - Virtual Open Systems and Columbia University 74f8d6632SMarc Zyngier * Author: Christoffer Dall <c.dall@virtualopensystems.com> 84f8d6632SMarc Zyngier * 94f8d6632SMarc Zyngier * This program is free software; you can redistribute it and/or modify 104f8d6632SMarc Zyngier * it under the terms of the GNU General Public License version 2 as 114f8d6632SMarc Zyngier * published by the Free Software Foundation. 124f8d6632SMarc Zyngier * 134f8d6632SMarc Zyngier * This program is distributed in the hope that it will be useful, 144f8d6632SMarc Zyngier * but WITHOUT ANY WARRANTY; without even the implied warranty of 154f8d6632SMarc Zyngier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 164f8d6632SMarc Zyngier * GNU General Public License for more details. 174f8d6632SMarc Zyngier * 184f8d6632SMarc Zyngier * You should have received a copy of the GNU General Public License 194f8d6632SMarc Zyngier * along with this program. If not, see <http://www.gnu.org/licenses/>. 204f8d6632SMarc Zyngier */ 214f8d6632SMarc Zyngier 224f8d6632SMarc Zyngier #ifndef __ARM64_KVM_HOST_H__ 234f8d6632SMarc Zyngier #define __ARM64_KVM_HOST_H__ 244f8d6632SMarc Zyngier 2565647300SPaolo Bonzini #include <linux/types.h> 2665647300SPaolo Bonzini #include <linux/kvm_types.h> 274f8d6632SMarc Zyngier #include <asm/kvm.h> 284f8d6632SMarc Zyngier #include <asm/kvm_asm.h> 294f8d6632SMarc Zyngier #include <asm/kvm_mmio.h> 304f8d6632SMarc Zyngier 31c1426e4cSEric Auger #define __KVM_HAVE_ARCH_INTC_INITIALIZED 32c1426e4cSEric Auger 334f8d6632SMarc Zyngier #define KVM_USER_MEM_SLOTS 32 344f8d6632SMarc Zyngier #define KVM_PRIVATE_MEM_SLOTS 4 354f8d6632SMarc Zyngier #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 36920552b2SDavid Hildenbrand #define KVM_HALT_POLL_NS_DEFAULT 500000 374f8d6632SMarc Zyngier 384f8d6632SMarc Zyngier #include <kvm/arm_vgic.h> 394f8d6632SMarc Zyngier #include <kvm/arm_arch_timer.h> 404f8d6632SMarc Zyngier 41ef748917SMing Lei #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS 42ef748917SMing Lei 437d0f84aaSAnup Patel #define KVM_VCPU_MAX_FEATURES 3 444f8d6632SMarc Zyngier 456951e48bSWill Deacon int __attribute_const__ kvm_target_cpu(void); 464f8d6632SMarc Zyngier int kvm_reset_vcpu(struct kvm_vcpu *vcpu); 474f8d6632SMarc Zyngier int kvm_arch_dev_ioctl_check_extension(long ext); 484f8d6632SMarc Zyngier 494f8d6632SMarc Zyngier struct kvm_arch { 504f8d6632SMarc Zyngier /* The VMID generation used for the virt. memory system */ 514f8d6632SMarc Zyngier u64 vmid_gen; 524f8d6632SMarc Zyngier u32 vmid; 534f8d6632SMarc Zyngier 544f8d6632SMarc Zyngier /* 1-level 2nd stage table and lock */ 554f8d6632SMarc Zyngier spinlock_t pgd_lock; 564f8d6632SMarc Zyngier pgd_t *pgd; 574f8d6632SMarc Zyngier 584f8d6632SMarc Zyngier /* VTTBR value associated with above pgd and vmid */ 594f8d6632SMarc Zyngier u64 vttbr; 604f8d6632SMarc Zyngier 613caa2d8cSAndre Przywara /* The maximum number of vCPUs depends on the used GIC model */ 623caa2d8cSAndre Przywara int max_vcpus; 633caa2d8cSAndre Przywara 644f8d6632SMarc Zyngier /* Interrupt controller */ 654f8d6632SMarc Zyngier struct vgic_dist vgic; 664f8d6632SMarc Zyngier 674f8d6632SMarc Zyngier /* Timer */ 684f8d6632SMarc Zyngier struct arch_timer_kvm timer; 694f8d6632SMarc Zyngier }; 704f8d6632SMarc Zyngier 714f8d6632SMarc Zyngier #define KVM_NR_MEM_OBJS 40 724f8d6632SMarc Zyngier 734f8d6632SMarc Zyngier /* 744f8d6632SMarc Zyngier * We don't want allocation failures within the mmu code, so we preallocate 754f8d6632SMarc Zyngier * enough memory for a single page fault in a cache. 764f8d6632SMarc Zyngier */ 774f8d6632SMarc Zyngier struct kvm_mmu_memory_cache { 784f8d6632SMarc Zyngier int nobjs; 794f8d6632SMarc Zyngier void *objects[KVM_NR_MEM_OBJS]; 804f8d6632SMarc Zyngier }; 814f8d6632SMarc Zyngier 824f8d6632SMarc Zyngier struct kvm_vcpu_fault_info { 834f8d6632SMarc Zyngier u32 esr_el2; /* Hyp Syndrom Register */ 844f8d6632SMarc Zyngier u64 far_el2; /* Hyp Fault Address Register */ 854f8d6632SMarc Zyngier u64 hpfar_el2; /* Hyp IPA Fault Address Register */ 864f8d6632SMarc Zyngier }; 874f8d6632SMarc Zyngier 884f8d6632SMarc Zyngier struct kvm_cpu_context { 894f8d6632SMarc Zyngier struct kvm_regs gp_regs; 9040033a61SMarc Zyngier union { 914f8d6632SMarc Zyngier u64 sys_regs[NR_SYS_REGS]; 9272564016SMarc Zyngier u32 copro[NR_COPRO_REGS]; 9340033a61SMarc Zyngier }; 944f8d6632SMarc Zyngier }; 954f8d6632SMarc Zyngier 964f8d6632SMarc Zyngier typedef struct kvm_cpu_context kvm_cpu_context_t; 974f8d6632SMarc Zyngier 984f8d6632SMarc Zyngier struct kvm_vcpu_arch { 994f8d6632SMarc Zyngier struct kvm_cpu_context ctxt; 1004f8d6632SMarc Zyngier 1014f8d6632SMarc Zyngier /* HYP configuration */ 1024f8d6632SMarc Zyngier u64 hcr_el2; 10356c7f5e7SAlex Bennée u32 mdcr_el2; 1044f8d6632SMarc Zyngier 1054f8d6632SMarc Zyngier /* Exception Information */ 1064f8d6632SMarc Zyngier struct kvm_vcpu_fault_info fault; 1074f8d6632SMarc Zyngier 10884e690bfSAlex Bennée /* Guest debug state */ 1090c557ed4SMarc Zyngier u64 debug_flags; 1100c557ed4SMarc Zyngier 11184e690bfSAlex Bennée /* 11284e690bfSAlex Bennée * We maintain more than a single set of debug registers to support 11384e690bfSAlex Bennée * debugging the guest from the host and to maintain separate host and 11484e690bfSAlex Bennée * guest state during world switches. vcpu_debug_state are the debug 11584e690bfSAlex Bennée * registers of the vcpu as the guest sees them. host_debug_state are 116834bf887SAlex Bennée * the host registers which are saved and restored during 117834bf887SAlex Bennée * world switches. external_debug_state contains the debug 118834bf887SAlex Bennée * values we want to debug the guest. This is set via the 119834bf887SAlex Bennée * KVM_SET_GUEST_DEBUG ioctl. 12084e690bfSAlex Bennée * 12184e690bfSAlex Bennée * debug_ptr points to the set of debug registers that should be loaded 12284e690bfSAlex Bennée * onto the hardware when running the guest. 12384e690bfSAlex Bennée */ 12484e690bfSAlex Bennée struct kvm_guest_debug_arch *debug_ptr; 12584e690bfSAlex Bennée struct kvm_guest_debug_arch vcpu_debug_state; 126834bf887SAlex Bennée struct kvm_guest_debug_arch external_debug_state; 12784e690bfSAlex Bennée 1284f8d6632SMarc Zyngier /* Pointer to host CPU context */ 1294f8d6632SMarc Zyngier kvm_cpu_context_t *host_cpu_context; 13084e690bfSAlex Bennée struct kvm_guest_debug_arch host_debug_state; 1314f8d6632SMarc Zyngier 1324f8d6632SMarc Zyngier /* VGIC state */ 1334f8d6632SMarc Zyngier struct vgic_cpu vgic_cpu; 1344f8d6632SMarc Zyngier struct arch_timer_cpu timer_cpu; 1354f8d6632SMarc Zyngier 1364f8d6632SMarc Zyngier /* 1374f8d6632SMarc Zyngier * Anything that is not used directly from assembly code goes 1384f8d6632SMarc Zyngier * here. 1394f8d6632SMarc Zyngier */ 1404f8d6632SMarc Zyngier 141337b99bfSAlex Bennée /* 142337b99bfSAlex Bennée * Guest registers we preserve during guest debugging. 143337b99bfSAlex Bennée * 144337b99bfSAlex Bennée * These shadow registers are updated by the kvm_handle_sys_reg 145337b99bfSAlex Bennée * trap handler if the guest accesses or updates them while we 146337b99bfSAlex Bennée * are using guest debug. 147337b99bfSAlex Bennée */ 148337b99bfSAlex Bennée struct { 149337b99bfSAlex Bennée u32 mdscr_el1; 150337b99bfSAlex Bennée } guest_debug_preserved; 151337b99bfSAlex Bennée 1523781528eSEric Auger /* vcpu power-off state */ 1533781528eSEric Auger bool power_off; 1544f8d6632SMarc Zyngier 1554f8d6632SMarc Zyngier /* IO related fields */ 1564f8d6632SMarc Zyngier struct kvm_decode mmio_decode; 1574f8d6632SMarc Zyngier 1584f8d6632SMarc Zyngier /* Interrupt related fields */ 1594f8d6632SMarc Zyngier u64 irq_lines; /* IRQ and FIQ levels */ 1604f8d6632SMarc Zyngier 1614f8d6632SMarc Zyngier /* Cache some mmu pages needed inside spinlock regions */ 1624f8d6632SMarc Zyngier struct kvm_mmu_memory_cache mmu_page_cache; 1634f8d6632SMarc Zyngier 1644f8d6632SMarc Zyngier /* Target CPU and feature flags */ 1656c8c0c4dSChen Gang int target; 1664f8d6632SMarc Zyngier DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); 1674f8d6632SMarc Zyngier 1684f8d6632SMarc Zyngier /* Detect first run of a vcpu */ 1694f8d6632SMarc Zyngier bool has_run_once; 1704f8d6632SMarc Zyngier }; 1714f8d6632SMarc Zyngier 1724f8d6632SMarc Zyngier #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) 1734f8d6632SMarc Zyngier #define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) 17472564016SMarc Zyngier /* 17572564016SMarc Zyngier * CP14 and CP15 live in the same array, as they are backed by the 17672564016SMarc Zyngier * same system registers. 17772564016SMarc Zyngier */ 17872564016SMarc Zyngier #define vcpu_cp14(v,r) ((v)->arch.ctxt.copro[(r)]) 17972564016SMarc Zyngier #define vcpu_cp15(v,r) ((v)->arch.ctxt.copro[(r)]) 1804f8d6632SMarc Zyngier 181f0a3eaffSVictor Kamensky #ifdef CONFIG_CPU_BIG_ENDIAN 182dedf97e8SMarc Zyngier #define vcpu_cp15_64_high(v,r) vcpu_cp15((v),(r)) 183dedf97e8SMarc Zyngier #define vcpu_cp15_64_low(v,r) vcpu_cp15((v),(r) + 1) 184f0a3eaffSVictor Kamensky #else 185dedf97e8SMarc Zyngier #define vcpu_cp15_64_high(v,r) vcpu_cp15((v),(r) + 1) 186dedf97e8SMarc Zyngier #define vcpu_cp15_64_low(v,r) vcpu_cp15((v),(r)) 187f0a3eaffSVictor Kamensky #endif 188f0a3eaffSVictor Kamensky 1894f8d6632SMarc Zyngier struct kvm_vm_stat { 1904f8d6632SMarc Zyngier u32 remote_tlb_flush; 1914f8d6632SMarc Zyngier }; 1924f8d6632SMarc Zyngier 1934f8d6632SMarc Zyngier struct kvm_vcpu_stat { 194f7819512SPaolo Bonzini u32 halt_successful_poll; 19562bea5bfSPaolo Bonzini u32 halt_attempted_poll; 1964f8d6632SMarc Zyngier u32 halt_wakeup; 1974f8d6632SMarc Zyngier }; 1984f8d6632SMarc Zyngier 199473bdc0eSAnup Patel int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); 2004f8d6632SMarc Zyngier unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); 2014f8d6632SMarc Zyngier int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); 2024f8d6632SMarc Zyngier int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 2034f8d6632SMarc Zyngier int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 2044f8d6632SMarc Zyngier 2054f8d6632SMarc Zyngier #define KVM_ARCH_WANT_MMU_NOTIFIER 2064f8d6632SMarc Zyngier int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); 2074f8d6632SMarc Zyngier int kvm_unmap_hva_range(struct kvm *kvm, 2084f8d6632SMarc Zyngier unsigned long start, unsigned long end); 2094f8d6632SMarc Zyngier void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); 21035307b9aSMarc Zyngier int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); 21135307b9aSMarc Zyngier int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); 2124f8d6632SMarc Zyngier 2134f8d6632SMarc Zyngier /* We do not have shadow page tables, hence the empty hooks */ 214fe71557aSTang Chen static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, 215fe71557aSTang Chen unsigned long address) 216fe71557aSTang Chen { 217fe71557aSTang Chen } 218fe71557aSTang Chen 2194f8d6632SMarc Zyngier struct kvm_vcpu *kvm_arm_get_running_vcpu(void); 2204000be42SWill Deacon struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void); 2214f8d6632SMarc Zyngier 2224f8d6632SMarc Zyngier u64 kvm_call_hyp(void *hypfn, ...); 223cf5d3188SChristoffer Dall void force_vm_exit(const cpumask_t *mask); 2248199ed0eSMario Smarduch void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot); 2254f8d6632SMarc Zyngier 2264f8d6632SMarc Zyngier int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, 2274f8d6632SMarc Zyngier int exception_index); 2284f8d6632SMarc Zyngier 2294f8d6632SMarc Zyngier int kvm_perf_init(void); 2304f8d6632SMarc Zyngier int kvm_perf_teardown(void); 2314f8d6632SMarc Zyngier 2324429fc64SAndre Przywara struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr); 2334429fc64SAndre Przywara 234092bd143SMarc Zyngier static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, 235092bd143SMarc Zyngier phys_addr_t pgd_ptr, 236092bd143SMarc Zyngier unsigned long hyp_stack_ptr, 237092bd143SMarc Zyngier unsigned long vector_ptr) 238092bd143SMarc Zyngier { 239092bd143SMarc Zyngier /* 240092bd143SMarc Zyngier * Call initialization code, and switch to the full blown 241092bd143SMarc Zyngier * HYP code. 242092bd143SMarc Zyngier */ 243092bd143SMarc Zyngier kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr, 244092bd143SMarc Zyngier hyp_stack_ptr, vector_ptr); 245092bd143SMarc Zyngier } 246092bd143SMarc Zyngier 24713a34e06SRadim Krčmář static inline void kvm_arch_hardware_disable(void) {} 2480865e636SRadim Krčmář static inline void kvm_arch_hardware_unsetup(void) {} 2490865e636SRadim Krčmář static inline void kvm_arch_sync_events(struct kvm *kvm) {} 2500865e636SRadim Krčmář static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} 2510865e636SRadim Krčmář static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 2520865e636SRadim Krčmář 25356c7f5e7SAlex Bennée void kvm_arm_init_debug(void); 25456c7f5e7SAlex Bennée void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); 25556c7f5e7SAlex Bennée void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); 25684e690bfSAlex Bennée void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); 25756c7f5e7SAlex Bennée 2584f8d6632SMarc Zyngier #endif /* __ARM64_KVM_HOST_H__ */ 259