2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
3 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2, as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #ifndef __ARM_KVM_HOST_H__
20 #define __ARM_KVM_HOST_H__
23 #include <asm/kvm_asm.h>
24 #include <asm/fpstate.h>
26 #define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
27 #define KVM_MEMORY_SLOTS 32
28 #define KVM_PRIVATE_MEM_SLOTS 4
29 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
30 #define KVM_HAVE_ONE_REG
32 #define KVM_VCPU_MAX_FEATURES 0
34 /* We don't currently support large pages. */
35 #define KVM_HPAGE_GFN_SHIFT(x) 0
36 #define KVM_NR_PAGE_SIZES 1
37 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
40 u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
41 int kvm_target_cpu(void);
42 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
43 void kvm_reset_coprocs(struct kvm_vcpu *vcpu);
46 /* VTTBR value associated with below pgd and vmid */
50 * Anything that is not used directly from assembly code goes
54 /* The VMID generation used for the virt. memory system */
58 /* Stage-2 page table */
62 #define KVM_NR_MEM_OBJS 40
65 * We don't want allocation failures within the mmu code, so we preallocate
66 * enough memory for a single page fault in a cache.
68 struct kvm_mmu_memory_cache {
70 void *objects[KVM_NR_MEM_OBJS];
73 struct kvm_vcpu_arch {
76 int target; /* Processor target */
77 DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
79 /* System control coprocessor (cp15) */
80 u32 cp15[NR_CP15_REGS];
82 /* The CPU type we expose to the VM */
85 /* Exception Information */
86 u32 hsr; /* Hyp Syndrome Register */
87 u32 hxfar; /* Hyp Data/Inst Fault Address Register */
88 u32 hpfar; /* Hyp IPA Fault Address Register */
90 /* Floating point registers (VFP and Advanced SIMD/NEON) */
91 struct vfp_hard_struct vfp_guest;
92 struct vfp_hard_struct *vfp_host;
95 * Anything that is not used directly from assembly code goes
98 /* dcache set/way operation pending */
100 cpumask_t require_dcache_flush;
102 /* Interrupt related fields */
103 u32 irq_lines; /* IRQ and FIQ levels */
105 /* Hyp exception information */
106 u32 hyp_pc; /* PC when exception was taken from Hyp mode */
108 /* Cache some mmu pages needed inside spinlock regions */
109 struct kvm_mmu_memory_cache mmu_page_cache;
111 /* Detect first run of a vcpu */
116 u32 remote_tlb_flush;
119 struct kvm_vcpu_stat {
123 struct kvm_vcpu_init;
124 int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
125 const struct kvm_vcpu_init *init);
126 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
127 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
129 int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
130 int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
131 u64 kvm_call_hyp(void *hypfn, ...);
132 void force_vm_exit(const cpumask_t *mask);
134 #define KVM_ARCH_WANT_MMU_NOTIFIER
136 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
137 int kvm_unmap_hva_range(struct kvm *kvm,
138 unsigned long start, unsigned long end);
139 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
141 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
142 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
144 /* We do not have shadow page tables, hence the empty hooks */
145 static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
150 static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
154 #endif /* __ARM_KVM_HOST_H__ */