| /* |
| * Copyright (C) 2012,2013 - ARM Ltd |
| * Author: Marc Zyngier <marc.zyngier@arm.com> |
| * |
| * Derived from arch/arm/include/asm/kvm_host.h: |
| * Copyright (C) 2012 - Virtual Open Systems and Columbia University |
| * Author: Christoffer Dall <c.dall@virtualopensystems.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef __ARM64_KVM_HOST_H__ |
| #define __ARM64_KVM_HOST_H__ |
| |
| #include <linux/types.h> |
| #include <linux/kvm_types.h> |
| #include <asm/kvm.h> |
| #include <asm/kvm_asm.h> |
| #include <asm/kvm_mmio.h> |
| |
| #define __KVM_HAVE_ARCH_INTC_INITIALIZED |
| |
| #define KVM_USER_MEM_SLOTS 32 |
| #define KVM_PRIVATE_MEM_SLOTS 4 |
| #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 |
| |
| #include <kvm/arm_vgic.h> |
| #include <kvm/arm_arch_timer.h> |
| |
| #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS |
| |
| #define KVM_VCPU_MAX_FEATURES 3 |
| |
| int __attribute_const__ kvm_target_cpu(void); |
| int kvm_reset_vcpu(struct kvm_vcpu *vcpu); |
| int kvm_arch_dev_ioctl_check_extension(long ext); |
| |
| struct kvm_arch { |
| /* The VMID generation used for the virt. memory system */ |
| u64 vmid_gen; |
| u32 vmid; |
| |
| /* 1-level 2nd stage table and lock */ |
| spinlock_t pgd_lock; |
| pgd_t *pgd; |
| |
| /* VTTBR value associated with above pgd and vmid */ |
| u64 vttbr; |
| |
| /* The maximum number of vCPUs depends on the used GIC model */ |
| int max_vcpus; |
| |
| /* Interrupt controller */ |
| struct vgic_dist vgic; |
| |
| /* Timer */ |
| struct arch_timer_kvm timer; |
| }; |
| |
| #define KVM_NR_MEM_OBJS 40 |
| |
| /* |
| * We don't want allocation failures within the mmu code, so we preallocate |
| * enough memory for a single page fault in a cache. |
| */ |
| struct kvm_mmu_memory_cache { |
| int nobjs; |
| void *objects[KVM_NR_MEM_OBJS]; |
| }; |
| |
| struct kvm_vcpu_fault_info { |
| u32 esr_el2; /* Hyp Syndrom Register */ |
| u64 far_el2; /* Hyp Fault Address Register */ |
| u64 hpfar_el2; /* Hyp IPA Fault Address Register */ |
| }; |
| |
| struct kvm_cpu_context { |
| struct kvm_regs gp_regs; |
| union { |
| u64 sys_regs[NR_SYS_REGS]; |
| u32 copro[NR_COPRO_REGS]; |
| }; |
| }; |
| |
| typedef struct kvm_cpu_context kvm_cpu_context_t; |
| |
| struct kvm_vcpu_arch { |
| struct kvm_cpu_context ctxt; |
| |
| /* HYP configuration */ |
| u64 hcr_el2; |
| u32 mdcr_el2; |
| |
| /* Exception Information */ |
| struct kvm_vcpu_fault_info fault; |
| |
| /* Guest debug state */ |
| u64 debug_flags; |
| |
| /* |
| * We maintain more than a single set of debug registers to support |
| * debugging the guest from the host and to maintain separate host and |
| * guest state during world switches. vcpu_debug_state are the debug |
| * registers of the vcpu as the guest sees them. host_debug_state are |
| * the host registers which are saved and restored during |
| * world switches. external_debug_state contains the debug |
| * values we want to debug the guest. This is set via the |
| * KVM_SET_GUEST_DEBUG ioctl. |
| * |
| * debug_ptr points to the set of debug registers that should be loaded |
| * onto the hardware when running the guest. |
| */ |
| struct kvm_guest_debug_arch *debug_ptr; |
| struct kvm_guest_debug_arch vcpu_debug_state; |
| struct kvm_guest_debug_arch external_debug_state; |
| |
| /* Pointer to host CPU context */ |
| kvm_cpu_context_t *host_cpu_context; |
| struct kvm_guest_debug_arch host_debug_state; |
| |
| /* VGIC state */ |
| struct vgic_cpu vgic_cpu; |
| struct arch_timer_cpu timer_cpu; |
| |
| /* |
| * Anything that is not used directly from assembly code goes |
| * here. |
| */ |
| |
| /* |
| * Guest registers we preserve during guest debugging. |
| * |
| * These shadow registers are updated by the kvm_handle_sys_reg |
| * trap handler if the guest accesses or updates them while we |
| * are using guest debug. |
| */ |
| struct { |
| u32 mdscr_el1; |
| } guest_debug_preserved; |
| |
| /* Don't run the guest */ |
| bool pause; |
| |
| /* IO related fields */ |
| struct kvm_decode mmio_decode; |
| |
| /* Interrupt related fields */ |
| u64 irq_lines; /* IRQ and FIQ levels */ |
| |
| /* Cache some mmu pages needed inside spinlock regions */ |
| struct kvm_mmu_memory_cache mmu_page_cache; |
| |
| /* Target CPU and feature flags */ |
| int target; |
| DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); |
| |
| /* Detect first run of a vcpu */ |
| bool has_run_once; |
| }; |
| |
| #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) |
| #define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) |
| /* |
| * CP14 and CP15 live in the same array, as they are backed by the |
| * same system registers. |
| */ |
| #define vcpu_cp14(v,r) ((v)->arch.ctxt.copro[(r)]) |
| #define vcpu_cp15(v,r) ((v)->arch.ctxt.copro[(r)]) |
| |
| #ifdef CONFIG_CPU_BIG_ENDIAN |
| #define vcpu_cp15_64_high(v,r) vcpu_cp15((v),(r)) |
| #define vcpu_cp15_64_low(v,r) vcpu_cp15((v),(r) + 1) |
| #else |
| #define vcpu_cp15_64_high(v,r) vcpu_cp15((v),(r) + 1) |
| #define vcpu_cp15_64_low(v,r) vcpu_cp15((v),(r)) |
| #endif |
| |
| struct kvm_vm_stat { |
| u32 remote_tlb_flush; |
| }; |
| |
| struct kvm_vcpu_stat { |
| u32 halt_successful_poll; |
| u32 halt_attempted_poll; |
| u32 halt_wakeup; |
| }; |
| |
| int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); |
| unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); |
| int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); |
| int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |
| int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |
| |
| #define KVM_ARCH_WANT_MMU_NOTIFIER |
| int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); |
| int kvm_unmap_hva_range(struct kvm *kvm, |
| unsigned long start, unsigned long end); |
| void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); |
| int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); |
| int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); |
| |
| /* We do not have shadow page tables, hence the empty hooks */ |
| static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, |
| unsigned long address) |
| { |
| } |
| |
| struct kvm_vcpu *kvm_arm_get_running_vcpu(void); |
| struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void); |
| |
| u64 kvm_call_hyp(void *hypfn, ...); |
| void force_vm_exit(const cpumask_t *mask); |
| void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot); |
| |
| int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, |
| int exception_index); |
| |
| int kvm_perf_init(void); |
| int kvm_perf_teardown(void); |
| |
| struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr); |
| |
| static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, |
| phys_addr_t pgd_ptr, |
| unsigned long hyp_stack_ptr, |
| unsigned long vector_ptr) |
| { |
| /* |
| * Call initialization code, and switch to the full blown |
| * HYP code. |
| */ |
| kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr, |
| hyp_stack_ptr, vector_ptr); |
| } |
| |
| static inline void kvm_arch_hardware_disable(void) {} |
| static inline void kvm_arch_hardware_unsetup(void) {} |
| static inline void kvm_arch_sync_events(struct kvm *kvm) {} |
| static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} |
| static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} |
| |
| void kvm_arm_init_debug(void); |
| void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); |
| void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); |
| void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); |
| |
| #endif /* __ARM64_KVM_HOST_H__ */ |