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Merge remote-tracking branches 'asoc/topic/ad193x', 'asoc/topic/alc5632', 'asoc/topic...
[linux-2.6-block.git] / arch / arm64 / include / asm / kvm_emulate.h
CommitLineData
83a49794
MZ		 1/*
2 * Copyright (C) 2012,2013 - ARM Ltd
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
4 *
5 * Derived from arch/arm/include/kvm_emulate.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_EMULATE_H__
23#define __ARM64_KVM_EMULATE_H__
24
25#include <linux/kvm_host.h>
26#include <asm/kvm_asm.h>
27#include <asm/kvm_arm.h>
28#include <asm/kvm_mmio.h>
29#include <asm/ptrace.h>
30
b547631f
MZ		 31unsigned long *vcpu_reg32(const struct kvm_vcpu *vcpu, u8 reg_num);
32unsigned long *vcpu_spsr32(const struct kvm_vcpu *vcpu);
33
27b190bd
MZ		 34bool kvm_condition_valid32(const struct kvm_vcpu *vcpu);
35void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr);
36
83a49794
MZ		 37void kvm_inject_undefined(struct kvm_vcpu *vcpu);
38void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
39void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
40
b856a591
CD		 41static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
42{
43 vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS;
801f6772
MZ		 44 if (test_bit(KVM_ARM_VCPU_EL1_32BIT, vcpu->arch.features))
45 vcpu->arch.hcr_el2 &= ~HCR_RW;
b856a591
CD		 46}
47
3c1e7165
MZ		 48static inline unsigned long vcpu_get_hcr(struct kvm_vcpu *vcpu)
49{
50 return vcpu->arch.hcr_el2;
51}
52
53static inline void vcpu_set_hcr(struct kvm_vcpu *vcpu, unsigned long hcr)
54{
55 vcpu->arch.hcr_el2 = hcr;
56}
57
83a49794
MZ		 58static inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu)
59{
60 return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pc;
61}
62
63static inline unsigned long *vcpu_elr_el1(const struct kvm_vcpu *vcpu)
64{
65 return (unsigned long *)&vcpu_gp_regs(vcpu)->elr_el1;
66}
67
68static inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu)
69{
70 return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pstate;
71}
72
73static inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu)
74{
b547631f 75 return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT);
83a49794
MZ		 76}
77
78static inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu)
79{
27b190bd
MZ		 80 if (vcpu_mode_is_32bit(vcpu))
81 return kvm_condition_valid32(vcpu);
82
83 return true;
83a49794
MZ		 84}
85
86static inline void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr)
87{
27b190bd
MZ		 88 if (vcpu_mode_is_32bit(vcpu))
89 kvm_skip_instr32(vcpu, is_wide_instr);
90 else
91 *vcpu_pc(vcpu) += 4;
83a49794
MZ		 92}
93
94static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
95{
b547631f 96 *vcpu_cpsr(vcpu) |= COMPAT_PSR_T_BIT;
83a49794
MZ		 97}
98
99static inline unsigned long *vcpu_reg(const struct kvm_vcpu *vcpu, u8 reg_num)
100{
b547631f
MZ		 101 if (vcpu_mode_is_32bit(vcpu))
102 return vcpu_reg32(vcpu, reg_num);
103
83a49794
MZ		 104 return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.regs[reg_num];
105}
106
107/* Get vcpu SPSR for current mode */
108static inline unsigned long *vcpu_spsr(const struct kvm_vcpu *vcpu)
109{
b547631f
MZ		 110 if (vcpu_mode_is_32bit(vcpu))
111 return vcpu_spsr32(vcpu);
112
83a49794
MZ		 113 return (unsigned long *)&vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1];
114}
115
116static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu)
117{
118 u32 mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK;
119
b547631f
MZ		 120 if (vcpu_mode_is_32bit(vcpu))
121 return mode > COMPAT_PSR_MODE_USR;
122
83a49794
MZ		 123 return mode != PSR_MODE_EL0t;
124}
125
126static inline u32 kvm_vcpu_get_hsr(const struct kvm_vcpu *vcpu)
127{
128 return vcpu->arch.fault.esr_el2;
129}
130
131static inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu)
132{
133 return vcpu->arch.fault.far_el2;
134}
135
136static inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu)
137{
138 return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8;
139}
140
141static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu)
142{
143 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_ISV);
144}
145
146static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
147{
148 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_WNR);
149}
150
151static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu)
152{
153 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_SSE);
154}
155
156static inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu)
157{
158 return (kvm_vcpu_get_hsr(vcpu) & ESR_EL2_SRT_MASK) >> ESR_EL2_SRT_SHIFT;
159}
160
161static inline bool kvm_vcpu_dabt_isextabt(const struct kvm_vcpu *vcpu)
162{
163 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_EA);
164}
165
166static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu)
167{
168 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_S1PTW);
169}
170
171static inline int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu)
172{
173 return 1 << ((kvm_vcpu_get_hsr(vcpu) & ESR_EL2_SAS) >> ESR_EL2_SAS_SHIFT);
174}
175
176/* This one is not specific to Data Abort */
177static inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu)
178{
179 return !!(kvm_vcpu_get_hsr(vcpu) & ESR_EL2_IL);
180}
181
182static inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu)
183{
184 return kvm_vcpu_get_hsr(vcpu) >> ESR_EL2_EC_SHIFT;
185}
186
187static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu)
188{
189 return kvm_vcpu_trap_get_class(vcpu) == ESR_EL2_EC_IABT;
190}
191
192static inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu)
0496daa5
CD		 193{
194 return kvm_vcpu_get_hsr(vcpu) & ESR_EL2_FSC;
195}
196
197static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu)
83a49794
MZ		 198{
199 return kvm_vcpu_get_hsr(vcpu) & ESR_EL2_FSC_TYPE;
200}
201
79c64880
MZ		 202static inline unsigned long kvm_vcpu_get_mpidr(struct kvm_vcpu *vcpu)
203{
204 return vcpu_sys_reg(vcpu, MPIDR_EL1);
205}
206
ce94fe93
MZ		 207static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu)
208{
209 if (vcpu_mode_is_32bit(vcpu))
210 *vcpu_cpsr(vcpu) |= COMPAT_PSR_E_BIT;
211 else
212 vcpu_sys_reg(vcpu, SCTLR_EL1) |= (1 << 25);
213}
214
6d89d2d9
MZ		 215static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu)
216{
217 if (vcpu_mode_is_32bit(vcpu))
218 return !!(*vcpu_cpsr(vcpu) & COMPAT_PSR_E_BIT);
219
220 return !!(vcpu_sys_reg(vcpu, SCTLR_EL1) & (1 << 25));
221}
222
223static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu,
224 unsigned long data,
225 unsigned int len)
226{
227 if (kvm_vcpu_is_be(vcpu)) {
228 switch (len) {
229 case 1:
230 return data & 0xff;
231 case 2:
232 return be16_to_cpu(data & 0xffff);
233 case 4:
234 return be32_to_cpu(data & 0xffffffff);
235 default:
236 return be64_to_cpu(data);
237 }
b3007086
VK		 238 } else {
239 switch (len) {
240 case 1:
241 return data & 0xff;
242 case 2:
243 return le16_to_cpu(data & 0xffff);
244 case 4:
245 return le32_to_cpu(data & 0xffffffff);
246 default:
247 return le64_to_cpu(data);
248 }
6d89d2d9
MZ		 249 }
250
251 return data; /* Leave LE untouched */
252}
253
254static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu,
255 unsigned long data,
256 unsigned int len)
257{
258 if (kvm_vcpu_is_be(vcpu)) {
259 switch (len) {
260 case 1:
261 return data & 0xff;
262 case 2:
263 return cpu_to_be16(data & 0xffff);
264 case 4:
265 return cpu_to_be32(data & 0xffffffff);
266 default:
267 return cpu_to_be64(data);
268 }
b3007086
VK		 269 } else {
270 switch (len) {
271 case 1:
272 return data & 0xff;
273 case 2:
274 return cpu_to_le16(data & 0xffff);
275 case 4:
276 return cpu_to_le32(data & 0xffffffff);
277 default:
278 return cpu_to_le64(data);
279 }
6d89d2d9
MZ		 280 }
281
282 return data; /* Leave LE untouched */
283}
284
83a49794 285#endif /* __ARM64_KVM_EMULATE_H__ */
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