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/kvm_mmio.h>
25 #include <asm/fpstate.h>
27 #define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
28 #define KVM_MEMORY_SLOTS 32
29 #define KVM_PRIVATE_MEM_SLOTS 4
30 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
31 #define KVM_HAVE_ONE_REG
33 #define KVM_VCPU_MAX_FEATURES 1
35 /* We don't currently support large pages. */
36 #define KVM_HPAGE_GFN_SHIFT(x) 0
37 #define KVM_NR_PAGE_SIZES 1
38 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
41 u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
42 int kvm_target_cpu(void);
43 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
44 void kvm_reset_coprocs(struct kvm_vcpu *vcpu);
47 /* VTTBR value associated with below pgd and vmid */
51 * Anything that is not used directly from assembly code goes
55 /* The VMID generation used for the virt. memory system */
59 /* Stage-2 page table */
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_arch {
77 int target; /* Processor target */
78 DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
80 /* System control coprocessor (cp15) */
81 u32 cp15[NR_CP15_REGS];
83 /* The CPU type we expose to the VM */
86 /* Exception Information */
87 u32 hsr; /* Hyp Syndrome Register */
88 u32 hxfar; /* Hyp Data/Inst Fault Address Register */
89 u32 hpfar; /* Hyp IPA Fault Address Register */
91 /* Floating point registers (VFP and Advanced SIMD/NEON) */
92 struct vfp_hard_struct vfp_guest;
93 struct vfp_hard_struct *vfp_host;
96 * Anything that is not used directly from assembly code goes
99 /* dcache set/way operation pending */
101 cpumask_t require_dcache_flush;
103 /* Don't run the guest on this vcpu */
106 /* IO related fields */
107 struct kvm_decode mmio_decode;
109 /* Interrupt related fields */
110 u32 irq_lines; /* IRQ and FIQ levels */
112 /* Hyp exception information */
113 u32 hyp_pc; /* PC when exception was taken from Hyp mode */
115 /* Cache some mmu pages needed inside spinlock regions */
116 struct kvm_mmu_memory_cache mmu_page_cache;
118 /* Detect first run of a vcpu */
123 u32 remote_tlb_flush;
126 struct kvm_vcpu_stat {
130 struct kvm_vcpu_init;
131 int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
132 const struct kvm_vcpu_init *init);
133 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
134 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
136 int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
137 int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
138 u64 kvm_call_hyp(void *hypfn, ...);
139 void force_vm_exit(const cpumask_t *mask);
141 #define KVM_ARCH_WANT_MMU_NOTIFIER
143 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
144 int kvm_unmap_hva_range(struct kvm *kvm,
145 unsigned long start, unsigned long end);
146 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
148 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
149 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
151 /* We do not have shadow page tables, hence the empty hooks */
152 static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
157 static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
161 #endif /* __ARM_KVM_HOST_H__ */