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Merge remote-tracking branch 'asoc/topic/w-codec' into asoc-next
[linux-2.6-block.git] / arch / arm / include / asm / kvm_emulate.h
CommitLineData
749cf76c
CD		 1/*
2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
3 * Author: Christoffer Dall <c.dall@virtualopensystems.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, write to the Free Software
16 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 */
18
19#ifndef __ARM_KVM_EMULATE_H__
20#define __ARM_KVM_EMULATE_H__
21
22#include <linux/kvm_host.h>
23#include <asm/kvm_asm.h>
45e96ea6 24#include <asm/kvm_mmio.h>
7393b599 25#include <asm/kvm_arm.h>
749cf76c 26
db730d8d
MZ		 27unsigned long *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
28unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu);
749cf76c 29
c5997563 30bool kvm_condition_valid(struct kvm_vcpu *vcpu);
5b3e5e5b
CD		 31void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr);
32void kvm_inject_undefined(struct kvm_vcpu *vcpu);
33void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
34void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
35
b856a591
CD		 36static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
37{
38 vcpu->arch.hcr = HCR_GUEST_MASK;
39}
40
3c1e7165
MZ		 41static inline unsigned long vcpu_get_hcr(struct kvm_vcpu *vcpu)
42{
43 return vcpu->arch.hcr;
44}
45
46static inline void vcpu_set_hcr(struct kvm_vcpu *vcpu, unsigned long hcr)
47{
48 vcpu->arch.hcr = hcr;
49}
50
aa024c2f
MZ		 51static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu)
52{
53 return 1;
54}
55
db730d8d 56static inline unsigned long *vcpu_pc(struct kvm_vcpu *vcpu)
749cf76c 57{
db730d8d 58 return &vcpu->arch.regs.usr_regs.ARM_pc;
749cf76c
CD		 59}
60
db730d8d 61static inline unsigned long *vcpu_cpsr(struct kvm_vcpu *vcpu)
749cf76c 62{
db730d8d 63 return &vcpu->arch.regs.usr_regs.ARM_cpsr;
749cf76c
CD		 64}
65
aa024c2f
MZ		 66static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
67{
68 *vcpu_cpsr(vcpu) |= PSR_T_BIT;
69}
70
749cf76c
CD		 71static inline bool mode_has_spsr(struct kvm_vcpu *vcpu)
72{
73 unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
74 return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE);
75}
76
77static inline bool vcpu_mode_priv(struct kvm_vcpu *vcpu)
78{
79 unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
80 return cpsr_mode > USR_MODE;;
81}
82
7393b599
MZ		 83static inline u32 kvm_vcpu_get_hsr(struct kvm_vcpu *vcpu)
84{
85 return vcpu->arch.fault.hsr;
86}
87
88static inline unsigned long kvm_vcpu_get_hfar(struct kvm_vcpu *vcpu)
89{
90 return vcpu->arch.fault.hxfar;
91}
92
93static inline phys_addr_t kvm_vcpu_get_fault_ipa(struct kvm_vcpu *vcpu)
94{
95 return ((phys_addr_t)vcpu->arch.fault.hpfar & HPFAR_MASK) << 8;
96}
97
98static inline unsigned long kvm_vcpu_get_hyp_pc(struct kvm_vcpu *vcpu)
99{
100 return vcpu->arch.fault.hyp_pc;
101}
102
4a1df28a
MZ		 103static inline bool kvm_vcpu_dabt_isvalid(struct kvm_vcpu *vcpu)
104{
105 return kvm_vcpu_get_hsr(vcpu) & HSR_ISV;
106}
107
023cc964
MZ		 108static inline bool kvm_vcpu_dabt_iswrite(struct kvm_vcpu *vcpu)
109{
110 return kvm_vcpu_get_hsr(vcpu) & HSR_WNR;
111}
112
7c511b88
MZ		 113static inline bool kvm_vcpu_dabt_issext(struct kvm_vcpu *vcpu)
114{
115 return kvm_vcpu_get_hsr(vcpu) & HSR_SSE;
116}
117
d0adf747
MZ		 118static inline int kvm_vcpu_dabt_get_rd(struct kvm_vcpu *vcpu)
119{
120 return (kvm_vcpu_get_hsr(vcpu) & HSR_SRT_MASK) >> HSR_SRT_SHIFT;
121}
122
78abfcde
MZ		 123static inline bool kvm_vcpu_dabt_isextabt(struct kvm_vcpu *vcpu)
124{
125 return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_EA;
126}
127
b37670b0
MZ		 128static inline bool kvm_vcpu_dabt_iss1tw(struct kvm_vcpu *vcpu)
129{
130 return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_S1PTW;
131}
132
a7123377
MZ		 133/* Get Access Size from a data abort */
134static inline int kvm_vcpu_dabt_get_as(struct kvm_vcpu *vcpu)
135{
136 switch ((kvm_vcpu_get_hsr(vcpu) >> 22) & 0x3) {
137 case 0:
138 return 1;
139 case 1:
140 return 2;
141 case 2:
142 return 4;
143 default:
144 kvm_err("Hardware is weird: SAS 0b11 is reserved\n");
145 return -EFAULT;
146 }
147}
148
23b415d6
MZ		 149/* This one is not specific to Data Abort */
150static inline bool kvm_vcpu_trap_il_is32bit(struct kvm_vcpu *vcpu)
151{
152 return kvm_vcpu_get_hsr(vcpu) & HSR_IL;
153}
154
4926d445
MZ		 155static inline u8 kvm_vcpu_trap_get_class(struct kvm_vcpu *vcpu)
156{
157 return kvm_vcpu_get_hsr(vcpu) >> HSR_EC_SHIFT;
158}
159
52d1dba9
MZ		 160static inline bool kvm_vcpu_trap_is_iabt(struct kvm_vcpu *vcpu)
161{
162 return kvm_vcpu_trap_get_class(vcpu) == HSR_EC_IABT;
163}
164
1cc287dd 165static inline u8 kvm_vcpu_trap_get_fault(struct kvm_vcpu *vcpu)
0496daa5
CD		 166{
167 return kvm_vcpu_get_hsr(vcpu) & HSR_FSC;
168}
169
170static inline u8 kvm_vcpu_trap_get_fault_type(struct kvm_vcpu *vcpu)
1cc287dd
MZ		 171{
172 return kvm_vcpu_get_hsr(vcpu) & HSR_FSC_TYPE;
173}
174
c088f8f0
CD		 175static inline u32 kvm_vcpu_hvc_get_imm(struct kvm_vcpu *vcpu)
176{
177 return kvm_vcpu_get_hsr(vcpu) & HSR_HVC_IMM_MASK;
178}
179
79c64880
MZ		 180static inline unsigned long kvm_vcpu_get_mpidr(struct kvm_vcpu *vcpu)
181{
182 return vcpu->arch.cp15[c0_MPIDR];
183}
184
ce94fe93
MZ		 185static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu)
186{
187 *vcpu_cpsr(vcpu) |= PSR_E_BIT;
188}
189
6d89d2d9
MZ		 190static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu)
191{
192 return !!(*vcpu_cpsr(vcpu) & PSR_E_BIT);
193}
194
195static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu,
196 unsigned long data,
197 unsigned int len)
198{
199 if (kvm_vcpu_is_be(vcpu)) {
200 switch (len) {
201 case 1:
202 return data & 0xff;
203 case 2:
204 return be16_to_cpu(data & 0xffff);
205 default:
206 return be32_to_cpu(data);
207 }
27f194fd
VK		 208 } else {
209 switch (len) {
210 case 1:
211 return data & 0xff;
212 case 2:
213 return le16_to_cpu(data & 0xffff);
214 default:
215 return le32_to_cpu(data);
216 }
6d89d2d9 217 }
6d89d2d9
MZ		 218}
219
220static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu,
221 unsigned long data,
222 unsigned int len)
223{
224 if (kvm_vcpu_is_be(vcpu)) {
225 switch (len) {
226 case 1:
227 return data & 0xff;
228 case 2:
229 return cpu_to_be16(data & 0xffff);
230 default:
231 return cpu_to_be32(data);
232 }
27f194fd
VK		 233 } else {
234 switch (len) {
235 case 1:
236 return data & 0xff;
237 case 2:
238 return cpu_to_le16(data & 0xffff);
239 default:
240 return cpu_to_le32(data);
241 }
6d89d2d9 242 }
6d89d2d9
MZ		 243}
244
749cf76c 245#endif /* __ARM_KVM_EMULATE_H__ */
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