Merge tag 'cris-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper...
[cascardo/linux.git] / arch / arm64 / include / asm / kvm_asm.h
1 /*
2  * Copyright (C) 2012,2013 - ARM Ltd
3  * Author: Marc Zyngier <marc.zyngier@arm.com>
4  *
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.
8  *
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.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17
18 #ifndef __ARM_KVM_ASM_H__
19 #define __ARM_KVM_ASM_H__
20
21 #include <asm/virt.h>
22
23 #define ARM_EXIT_WITH_SERROR_BIT  31
24 #define ARM_EXCEPTION_CODE(x)     ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT))
25 #define ARM_SERROR_PENDING(x)     !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT))
26
27 #define ARM_EXCEPTION_IRQ         0
28 #define ARM_EXCEPTION_EL1_SERROR  1
29 #define ARM_EXCEPTION_TRAP        2
30 /* The hyp-stub will return this for any kvm_call_hyp() call */
31 #define ARM_EXCEPTION_HYP_GONE    3
32
33 #define KVM_ARM64_DEBUG_DIRTY_SHIFT     0
34 #define KVM_ARM64_DEBUG_DIRTY           (1 << KVM_ARM64_DEBUG_DIRTY_SHIFT)
35
36 #define kvm_ksym_ref(sym)                                               \
37         ({                                                              \
38                 void *val = &sym;                                       \
39                 if (!is_kernel_in_hyp_mode())                           \
40                         val = phys_to_virt((u64)&sym - kimage_voffset); \
41                 val;                                                    \
42          })
43
44 #ifndef __ASSEMBLY__
45 struct kvm;
46 struct kvm_vcpu;
47
48 extern char __kvm_hyp_init[];
49 extern char __kvm_hyp_init_end[];
50 extern char __kvm_hyp_reset[];
51
52 extern char __kvm_hyp_vector[];
53
54 extern void __kvm_flush_vm_context(void);
55 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
56 extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
57
58 extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
59
60 extern u64 __vgic_v3_get_ich_vtr_el2(void);
61 extern void __vgic_v3_init_lrs(void);
62
63 extern u32 __kvm_get_mdcr_el2(void);
64
65 extern u32 __init_stage2_translation(void);
66
67 #endif
68
69 #endif /* __ARM_KVM_ASM_H__ */