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Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
-rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h new file mode 100644 index 000000000000..644d73956864 --- /dev/null +++ b/arch/arm64/include/asm/kvm_host.h | |||
@@ -0,0 +1,202 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2012,2013 - ARM Ltd | ||
3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | ||
4 | * | ||
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> | ||
8 | * | ||
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. | ||
12 | * | ||
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. | ||
17 | * | ||
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/>. | ||
20 | */ | ||
21 | |||
22 | #ifndef __ARM64_KVM_HOST_H__ | ||
23 | #define __ARM64_KVM_HOST_H__ | ||
24 | |||
25 | #include <asm/kvm.h> | ||
26 | #include <asm/kvm_asm.h> | ||
27 | #include <asm/kvm_mmio.h> | ||
28 | |||
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 | ||
33 | |||
34 | #include <kvm/arm_vgic.h> | ||
35 | #include <kvm/arm_arch_timer.h> | ||
36 | |||
37 | #define KVM_VCPU_MAX_FEATURES 2 | ||
38 | |||
39 | /* We don't currently support large pages. */ | ||
40 | #define KVM_HPAGE_GFN_SHIFT(x) 0 | ||
41 | #define KVM_NR_PAGE_SIZES 1 | ||
42 | #define KVM_PAGES_PER_HPAGE(x) (1UL<<31) | ||
43 | |||
44 | struct kvm_vcpu; | ||
45 | int kvm_target_cpu(void); | ||
46 | int kvm_reset_vcpu(struct kvm_vcpu *vcpu); | ||
47 | int kvm_arch_dev_ioctl_check_extension(long ext); | ||
48 | |||
49 | struct kvm_arch { | ||
50 | /* The VMID generation used for the virt. memory system */ | ||
51 | u64 vmid_gen; | ||
52 | u32 vmid; | ||
53 | |||
54 | /* 1-level 2nd stage table and lock */ | ||
55 | spinlock_t pgd_lock; | ||
56 | pgd_t *pgd; | ||
57 | |||
58 | /* VTTBR value associated with above pgd and vmid */ | ||
59 | u64 vttbr; | ||
60 | |||
61 | /* Interrupt controller */ | ||
62 | struct vgic_dist vgic; | ||
63 | |||
64 | /* Timer */ | ||
65 | struct arch_timer_kvm timer; | ||
66 | }; | ||
67 | |||
68 | #define KVM_NR_MEM_OBJS 40 | ||
69 | |||
70 | /* | ||
71 | * We don't want allocation failures within the mmu code, so we preallocate | ||
72 | * enough memory for a single page fault in a cache. | ||
73 | */ | ||
74 | struct kvm_mmu_memory_cache { | ||
75 | int nobjs; | ||
76 | void *objects[KVM_NR_MEM_OBJS]; | ||
77 | }; | ||
78 | |||
79 | struct kvm_vcpu_fault_info { | ||
80 | u32 esr_el2; /* Hyp Syndrom Register */ | ||
81 | u64 far_el2; /* Hyp Fault Address Register */ | ||
82 | u64 hpfar_el2; /* Hyp IPA Fault Address Register */ | ||
83 | }; | ||
84 | |||
85 | struct kvm_cpu_context { | ||
86 | struct kvm_regs gp_regs; | ||
87 | union { | ||
88 | u64 sys_regs[NR_SYS_REGS]; | ||
89 | u32 cp15[NR_CP15_REGS]; | ||
90 | }; | ||
91 | }; | ||
92 | |||
93 | typedef struct kvm_cpu_context kvm_cpu_context_t; | ||
94 | |||
95 | struct kvm_vcpu_arch { | ||
96 | struct kvm_cpu_context ctxt; | ||
97 | |||
98 | /* HYP configuration */ | ||
99 | u64 hcr_el2; | ||
100 | |||
101 | /* Exception Information */ | ||
102 | struct kvm_vcpu_fault_info fault; | ||
103 | |||
104 | /* Pointer to host CPU context */ | ||
105 | kvm_cpu_context_t *host_cpu_context; | ||
106 | |||
107 | /* VGIC state */ | ||
108 | struct vgic_cpu vgic_cpu; | ||
109 | struct arch_timer_cpu timer_cpu; | ||
110 | |||
111 | /* | ||
112 | * Anything that is not used directly from assembly code goes | ||
113 | * here. | ||
114 | */ | ||
115 | /* dcache set/way operation pending */ | ||
116 | int last_pcpu; | ||
117 | cpumask_t require_dcache_flush; | ||
118 | |||
119 | /* Don't run the guest */ | ||
120 | bool pause; | ||
121 | |||
122 | /* IO related fields */ | ||
123 | struct kvm_decode mmio_decode; | ||
124 | |||
125 | /* Interrupt related fields */ | ||
126 | u64 irq_lines; /* IRQ and FIQ levels */ | ||
127 | |||
128 | /* Cache some mmu pages needed inside spinlock regions */ | ||
129 | struct kvm_mmu_memory_cache mmu_page_cache; | ||
130 | |||
131 | /* Target CPU and feature flags */ | ||
132 | u32 target; | ||
133 | DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); | ||
134 | |||
135 | /* Detect first run of a vcpu */ | ||
136 | bool has_run_once; | ||
137 | }; | ||
138 | |||
139 | #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) | ||
140 | #define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) | ||
141 | #define vcpu_cp15(v,r) ((v)->arch.ctxt.cp15[(r)]) | ||
142 | |||
143 | struct kvm_vm_stat { | ||
144 | u32 remote_tlb_flush; | ||
145 | }; | ||
146 | |||
147 | struct kvm_vcpu_stat { | ||
148 | u32 halt_wakeup; | ||
149 | }; | ||
150 | |||
151 | struct kvm_vcpu_init; | ||
152 | int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, | ||
153 | const struct kvm_vcpu_init *init); | ||
154 | unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); | ||
155 | int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); | ||
156 | struct kvm_one_reg; | ||
157 | int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | ||
158 | int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | ||
159 | |||
160 | #define KVM_ARCH_WANT_MMU_NOTIFIER | ||
161 | struct kvm; | ||
162 | int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); | ||
163 | int kvm_unmap_hva_range(struct kvm *kvm, | ||
164 | unsigned long start, unsigned long end); | ||
165 | void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); | ||
166 | |||
167 | /* We do not have shadow page tables, hence the empty hooks */ | ||
168 | static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva) | ||
169 | { | ||
170 | return 0; | ||
171 | } | ||
172 | |||
173 | static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) | ||
174 | { | ||
175 | return 0; | ||
176 | } | ||
177 | |||
178 | struct kvm_vcpu *kvm_arm_get_running_vcpu(void); | ||
179 | struct kvm_vcpu __percpu **kvm_get_running_vcpus(void); | ||
180 | |||
181 | u64 kvm_call_hyp(void *hypfn, ...); | ||
182 | |||
183 | int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, | ||
184 | int exception_index); | ||
185 | |||
186 | int kvm_perf_init(void); | ||
187 | int kvm_perf_teardown(void); | ||
188 | |||
189 | static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, | ||
190 | phys_addr_t pgd_ptr, | ||
191 | unsigned long hyp_stack_ptr, | ||
192 | unsigned long vector_ptr) | ||
193 | { | ||
194 | /* | ||
195 | * Call initialization code, and switch to the full blown | ||
196 | * HYP code. | ||
197 | */ | ||
198 | kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr, | ||
199 | hyp_stack_ptr, vector_ptr); | ||
200 | } | ||
201 | |||
202 | #endif /* __ARM64_KVM_HOST_H__ */ | ||