2 * Copyright (C) 2012,2013 - ARM Ltd
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 * Derived from arch/arm/include/asm/kvm_host.h:
6 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
7 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __ARM64_KVM_HOST_H__
23 #define __ARM64_KVM_HOST_H__
26 #include <asm/kvm_asm.h>
27 #include <asm/kvm_mmio.h>
29 #define KVM_MAX_VCPUS 4
30 #define KVM_USER_MEM_SLOTS 32
31 #define KVM_PRIVATE_MEM_SLOTS 4
32 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
34 #include <kvm/arm_vgic.h>
35 #include <kvm/arm_arch_timer.h>
37 #define KVM_VCPU_MAX_FEATURES 2
40 int kvm_target_cpu(void);
41 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
42 int kvm_arch_dev_ioctl_check_extension(long ext);
45 /* The VMID generation used for the virt. memory system */
49 /* 1-level 2nd stage table and lock */
53 /* VTTBR value associated with above pgd and vmid */
56 /* Interrupt controller */
57 struct vgic_dist vgic;
60 struct arch_timer_kvm timer;
63 #define KVM_NR_MEM_OBJS 40
66 * We don't want allocation failures within the mmu code, so we preallocate
67 * enough memory for a single page fault in a cache.
69 struct kvm_mmu_memory_cache {
71 void *objects[KVM_NR_MEM_OBJS];
74 struct kvm_vcpu_fault_info {
75 u32 esr_el2; /* Hyp Syndrom Register */
76 u64 far_el2; /* Hyp Fault Address Register */
77 u64 hpfar_el2; /* Hyp IPA Fault Address Register */
80 struct kvm_cpu_context {
81 struct kvm_regs gp_regs;
83 u64 sys_regs[NR_SYS_REGS];
84 u32 cp15[NR_CP15_REGS];
88 typedef struct kvm_cpu_context kvm_cpu_context_t;
90 struct kvm_vcpu_arch {
91 struct kvm_cpu_context ctxt;
93 /* HYP configuration */
96 /* Exception Information */
97 struct kvm_vcpu_fault_info fault;
99 /* Pointer to host CPU context */
100 kvm_cpu_context_t *host_cpu_context;
103 struct vgic_cpu vgic_cpu;
104 struct arch_timer_cpu timer_cpu;
107 * Anything that is not used directly from assembly code goes
110 /* dcache set/way operation pending */
112 cpumask_t require_dcache_flush;
114 /* Don't run the guest */
117 /* IO related fields */
118 struct kvm_decode mmio_decode;
120 /* Interrupt related fields */
121 u64 irq_lines; /* IRQ and FIQ levels */
123 /* Cache some mmu pages needed inside spinlock regions */
124 struct kvm_mmu_memory_cache mmu_page_cache;
126 /* Target CPU and feature flags */
128 DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
130 /* Detect first run of a vcpu */
134 #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs)
135 #define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)])
136 #define vcpu_cp15(v,r) ((v)->arch.ctxt.cp15[(r)])
139 u32 remote_tlb_flush;
142 struct kvm_vcpu_stat {
146 struct kvm_vcpu_init;
147 int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
148 const struct kvm_vcpu_init *init);
149 int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init);
150 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
151 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
153 int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
154 int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
156 #define KVM_ARCH_WANT_MMU_NOTIFIER
158 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
159 int kvm_unmap_hva_range(struct kvm *kvm,
160 unsigned long start, unsigned long end);
161 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
163 /* We do not have shadow page tables, hence the empty hooks */
164 static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
169 static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
174 struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
175 struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
177 u64 kvm_call_hyp(void *hypfn, ...);
179 int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
180 int exception_index);
182 int kvm_perf_init(void);
183 int kvm_perf_teardown(void);
185 static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr,
187 unsigned long hyp_stack_ptr,
188 unsigned long vector_ptr)
191 * Call initialization code, and switch to the full blown
194 kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr,
195 hyp_stack_ptr, vector_ptr);
198 #endif /* __ARM64_KVM_HOST_H__ */