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 254f8d6632SMarc Zyngier #include <asm/kvm.h> 264f8d6632SMarc Zyngier #include <asm/kvm_asm.h> 274f8d6632SMarc Zyngier #include <asm/kvm_mmio.h> 284f8d6632SMarc Zyngier 294f8d6632SMarc Zyngier #define KVM_MAX_VCPUS 4 304f8d6632SMarc Zyngier #define KVM_USER_MEM_SLOTS 32 314f8d6632SMarc Zyngier #define KVM_PRIVATE_MEM_SLOTS 4 324f8d6632SMarc Zyngier #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 334f8d6632SMarc Zyngier 344f8d6632SMarc Zyngier #include <kvm/arm_vgic.h> 354f8d6632SMarc Zyngier #include <kvm/arm_arch_timer.h> 364f8d6632SMarc Zyngier 374f8d6632SMarc Zyngier #define KVM_VCPU_MAX_FEATURES 0 384f8d6632SMarc Zyngier 394f8d6632SMarc Zyngier /* We don't currently support large pages. */ 404f8d6632SMarc Zyngier #define KVM_HPAGE_GFN_SHIFT(x) 0 414f8d6632SMarc Zyngier #define KVM_NR_PAGE_SIZES 1 424f8d6632SMarc Zyngier #define KVM_PAGES_PER_HPAGE(x) (1UL<<31) 434f8d6632SMarc Zyngier 444f8d6632SMarc Zyngier struct kvm_vcpu; 454f8d6632SMarc Zyngier int 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 614f8d6632SMarc Zyngier /* Interrupt controller */ 624f8d6632SMarc Zyngier struct vgic_dist vgic; 634f8d6632SMarc Zyngier 644f8d6632SMarc Zyngier /* Timer */ 654f8d6632SMarc Zyngier struct arch_timer_kvm timer; 664f8d6632SMarc Zyngier }; 674f8d6632SMarc Zyngier 684f8d6632SMarc Zyngier #define KVM_NR_MEM_OBJS 40 694f8d6632SMarc Zyngier 704f8d6632SMarc Zyngier /* 714f8d6632SMarc Zyngier * We don't want allocation failures within the mmu code, so we preallocate 724f8d6632SMarc Zyngier * enough memory for a single page fault in a cache. 734f8d6632SMarc Zyngier */ 744f8d6632SMarc Zyngier struct kvm_mmu_memory_cache { 754f8d6632SMarc Zyngier int nobjs; 764f8d6632SMarc Zyngier void *objects[KVM_NR_MEM_OBJS]; 774f8d6632SMarc Zyngier }; 784f8d6632SMarc Zyngier 794f8d6632SMarc Zyngier struct kvm_vcpu_fault_info { 804f8d6632SMarc Zyngier u32 esr_el2; /* Hyp Syndrom Register */ 814f8d6632SMarc Zyngier u64 far_el2; /* Hyp Fault Address Register */ 824f8d6632SMarc Zyngier u64 hpfar_el2; /* Hyp IPA Fault Address Register */ 834f8d6632SMarc Zyngier }; 844f8d6632SMarc Zyngier 854f8d6632SMarc Zyngier struct kvm_cpu_context { 864f8d6632SMarc Zyngier struct kvm_regs gp_regs; 874f8d6632SMarc Zyngier u64 sys_regs[NR_SYS_REGS]; 884f8d6632SMarc Zyngier }; 894f8d6632SMarc Zyngier 904f8d6632SMarc Zyngier typedef struct kvm_cpu_context kvm_cpu_context_t; 914f8d6632SMarc Zyngier 924f8d6632SMarc Zyngier struct kvm_vcpu_arch { 934f8d6632SMarc Zyngier struct kvm_cpu_context ctxt; 944f8d6632SMarc Zyngier 954f8d6632SMarc Zyngier /* HYP configuration */ 964f8d6632SMarc Zyngier u64 hcr_el2; 974f8d6632SMarc Zyngier 984f8d6632SMarc Zyngier /* Exception Information */ 994f8d6632SMarc Zyngier struct kvm_vcpu_fault_info fault; 1004f8d6632SMarc Zyngier 1014f8d6632SMarc Zyngier /* Pointer to host CPU context */ 1024f8d6632SMarc Zyngier kvm_cpu_context_t *host_cpu_context; 1034f8d6632SMarc Zyngier 1044f8d6632SMarc Zyngier /* VGIC state */ 1054f8d6632SMarc Zyngier struct vgic_cpu vgic_cpu; 1064f8d6632SMarc Zyngier struct arch_timer_cpu timer_cpu; 1074f8d6632SMarc Zyngier 1084f8d6632SMarc Zyngier /* 1094f8d6632SMarc Zyngier * Anything that is not used directly from assembly code goes 1104f8d6632SMarc Zyngier * here. 1114f8d6632SMarc Zyngier */ 1124f8d6632SMarc Zyngier /* dcache set/way operation pending */ 1134f8d6632SMarc Zyngier int last_pcpu; 1144f8d6632SMarc Zyngier cpumask_t require_dcache_flush; 1154f8d6632SMarc Zyngier 1164f8d6632SMarc Zyngier /* Don't run the guest */ 1174f8d6632SMarc Zyngier bool pause; 1184f8d6632SMarc Zyngier 1194f8d6632SMarc Zyngier /* IO related fields */ 1204f8d6632SMarc Zyngier struct kvm_decode mmio_decode; 1214f8d6632SMarc Zyngier 1224f8d6632SMarc Zyngier /* Interrupt related fields */ 1234f8d6632SMarc Zyngier u64 irq_lines; /* IRQ and FIQ levels */ 1244f8d6632SMarc Zyngier 1254f8d6632SMarc Zyngier /* Cache some mmu pages needed inside spinlock regions */ 1264f8d6632SMarc Zyngier struct kvm_mmu_memory_cache mmu_page_cache; 1274f8d6632SMarc Zyngier 1284f8d6632SMarc Zyngier /* Target CPU and feature flags */ 1294f8d6632SMarc Zyngier u32 target; 1304f8d6632SMarc Zyngier DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); 1314f8d6632SMarc Zyngier 1324f8d6632SMarc Zyngier /* Detect first run of a vcpu */ 1334f8d6632SMarc Zyngier bool has_run_once; 1344f8d6632SMarc Zyngier }; 1354f8d6632SMarc Zyngier 1364f8d6632SMarc Zyngier #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) 1374f8d6632SMarc Zyngier #define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) 1384f8d6632SMarc Zyngier #define vcpu_cp15(v,r) ((v)->arch.ctxt.cp15[(r)]) 1394f8d6632SMarc Zyngier 1404f8d6632SMarc Zyngier struct kvm_vm_stat { 1414f8d6632SMarc Zyngier u32 remote_tlb_flush; 1424f8d6632SMarc Zyngier }; 1434f8d6632SMarc Zyngier 1444f8d6632SMarc Zyngier struct kvm_vcpu_stat { 1454f8d6632SMarc Zyngier u32 halt_wakeup; 1464f8d6632SMarc Zyngier }; 1474f8d6632SMarc Zyngier 1484f8d6632SMarc Zyngier struct kvm_vcpu_init; 1494f8d6632SMarc Zyngier int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, 1504f8d6632SMarc Zyngier const struct kvm_vcpu_init *init); 1514f8d6632SMarc Zyngier unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); 1524f8d6632SMarc Zyngier int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); 1534f8d6632SMarc Zyngier struct kvm_one_reg; 1544f8d6632SMarc Zyngier int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 1554f8d6632SMarc Zyngier int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 1564f8d6632SMarc Zyngier 1574f8d6632SMarc Zyngier #define KVM_ARCH_WANT_MMU_NOTIFIER 1584f8d6632SMarc Zyngier struct kvm; 1594f8d6632SMarc Zyngier int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); 1604f8d6632SMarc Zyngier int kvm_unmap_hva_range(struct kvm *kvm, 1614f8d6632SMarc Zyngier unsigned long start, unsigned long end); 1624f8d6632SMarc Zyngier void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); 1634f8d6632SMarc Zyngier 1644f8d6632SMarc Zyngier /* We do not have shadow page tables, hence the empty hooks */ 1654f8d6632SMarc Zyngier static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva) 1664f8d6632SMarc Zyngier { 1674f8d6632SMarc Zyngier return 0; 1684f8d6632SMarc Zyngier } 1694f8d6632SMarc Zyngier 1704f8d6632SMarc Zyngier static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 1714f8d6632SMarc Zyngier { 1724f8d6632SMarc Zyngier return 0; 1734f8d6632SMarc Zyngier } 1744f8d6632SMarc Zyngier 1754f8d6632SMarc Zyngier struct kvm_vcpu *kvm_arm_get_running_vcpu(void); 1764f8d6632SMarc Zyngier struct kvm_vcpu __percpu **kvm_get_running_vcpus(void); 1774f8d6632SMarc Zyngier 1784f8d6632SMarc Zyngier u64 kvm_call_hyp(void *hypfn, ...); 1794f8d6632SMarc Zyngier 1804f8d6632SMarc Zyngier int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, 1814f8d6632SMarc Zyngier int exception_index); 1824f8d6632SMarc Zyngier 1834f8d6632SMarc Zyngier int kvm_perf_init(void); 1844f8d6632SMarc Zyngier int kvm_perf_teardown(void); 1854f8d6632SMarc Zyngier 1864f8d6632SMarc Zyngier #endif /* __ARM64_KVM_HOST_H__ */ 187