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gerrit-public.fairphone.software / kernel / msm-4.9 / 99657c7857fd47d6086682d4cf1194954170755a / . / arch / powerpc / kvm / booke_emulate.c
blob: aebc65e93f4b41782d423fad656e0ba154277f8a [file] [log] [blame]
Hollis Blanchardd0c7dc02009-01-03 16:23:06 -0600[diff] [blame]1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#include <linux/kvm_host.h>
21#include <asm/disassemble.h>
22
23#include "booke.h"
24
25#define OP_19_XOP_RFI 50
26
27#define OP_31_XOP_MFMSR 83
28#define OP_31_XOP_WRTEE 131
29#define OP_31_XOP_MTMSR 146
30#define OP_31_XOP_WRTEEI 163
31
32static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
33{
34 vcpu->arch.pc = vcpu->arch.srr0;
35 kvmppc_set_msr(vcpu, vcpu->arch.srr1);
36}
37
38int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
39 unsigned int inst, int *advance)
40{
41 int emulated = EMULATE_DONE;
42 int rs;
43 int rt;
44
45 switch (get_op(inst)) {
46 case 19:
47 switch (get_xop(inst)) {
48 case OP_19_XOP_RFI:
49 kvmppc_emul_rfi(vcpu);
50 kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
51 *advance = 0;
52 break;
53
54 default:
55 emulated = EMULATE_FAIL;
56 break;
57 }
58 break;
59
60 case 31:
61 switch (get_xop(inst)) {
62
63 case OP_31_XOP_MFMSR:
64 rt = get_rt(inst);
65 vcpu->arch.gpr[rt] = vcpu->arch.msr;
66 kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
67 break;
68
69 case OP_31_XOP_MTMSR:
70 rs = get_rs(inst);
71 kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
72 kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
73 break;
74
75 case OP_31_XOP_WRTEE:
76 rs = get_rs(inst);
77 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
78 | (vcpu->arch.gpr[rs] & MSR_EE);
79 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
80 break;
81
82 case OP_31_XOP_WRTEEI:
83 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
84 | (inst & MSR_EE);
85 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
86 break;
87
88 default:
89 emulated = EMULATE_FAIL;
90 }
91
92 break;
93
94 default:
95 emulated = EMULATE_FAIL;
96 }
97
98 return emulated;
99}
100
101int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
102{
103 int emulated = EMULATE_DONE;
104
105 switch (sprn) {
106 case SPRN_DEAR:
107 vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
108 case SPRN_ESR:
109 vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
110 case SPRN_DBCR0:
111 vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
112 case SPRN_DBCR1:
113 vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
Hollis Blanchardf7b200a2009-01-03 16:23:07 -0600[diff] [blame]114 case SPRN_DBSR:
115 vcpu->arch.dbsr &= ~vcpu->arch.gpr[rs]; break;
Hollis Blanchardd0c7dc02009-01-03 16:23:06 -0600[diff] [blame]116 case SPRN_TSR:
117 vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
118 case SPRN_TCR:
119 vcpu->arch.tcr = vcpu->arch.gpr[rs];
120 kvmppc_emulate_dec(vcpu);
121 break;
122
123 /* Note: SPRG4-7 are user-readable. These values are
124 * loaded into the real SPRGs when resuming the
125 * guest. */
126 case SPRN_SPRG4:
127 vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
128 case SPRN_SPRG5:
129 vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
130 case SPRN_SPRG6:
131 vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
132 case SPRN_SPRG7:
133 vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
134
135 case SPRN_IVPR:
136 vcpu->arch.ivpr = vcpu->arch.gpr[rs];
137 break;
138 case SPRN_IVOR0:
139 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = vcpu->arch.gpr[rs];
140 break;
141 case SPRN_IVOR1:
142 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = vcpu->arch.gpr[rs];
143 break;
144 case SPRN_IVOR2:
145 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = vcpu->arch.gpr[rs];
146 break;
147 case SPRN_IVOR3:
148 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = vcpu->arch.gpr[rs];
149 break;
150 case SPRN_IVOR4:
151 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = vcpu->arch.gpr[rs];
152 break;
153 case SPRN_IVOR5:
154 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = vcpu->arch.gpr[rs];
155 break;
156 case SPRN_IVOR6:
157 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = vcpu->arch.gpr[rs];
158 break;
159 case SPRN_IVOR7:
160 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = vcpu->arch.gpr[rs];
161 break;
162 case SPRN_IVOR8:
163 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = vcpu->arch.gpr[rs];
164 break;
165 case SPRN_IVOR9:
166 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = vcpu->arch.gpr[rs];
167 break;
168 case SPRN_IVOR10:
169 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = vcpu->arch.gpr[rs];
170 break;
171 case SPRN_IVOR11:
172 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = vcpu->arch.gpr[rs];
173 break;
174 case SPRN_IVOR12:
175 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = vcpu->arch.gpr[rs];
176 break;
177 case SPRN_IVOR13:
178 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = vcpu->arch.gpr[rs];
179 break;
180 case SPRN_IVOR14:
181 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = vcpu->arch.gpr[rs];
182 break;
183 case SPRN_IVOR15:
184 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = vcpu->arch.gpr[rs];
185 break;
186
187 default:
188 emulated = EMULATE_FAIL;
189 }
190
191 return emulated;
192}
193
194int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
195{
196 int emulated = EMULATE_DONE;
197
198 switch (sprn) {
199 case SPRN_IVPR:
200 vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
201 case SPRN_DEAR:
202 vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
203 case SPRN_ESR:
204 vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
205 case SPRN_DBCR0:
206 vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
207 case SPRN_DBCR1:
208 vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
Hollis Blanchardf7b200a2009-01-03 16:23:07 -0600[diff] [blame]209 case SPRN_DBSR:
210 vcpu->arch.gpr[rt] = vcpu->arch.dbsr; break;
Hollis Blanchardd0c7dc02009-01-03 16:23:06 -0600[diff] [blame]211
212 case SPRN_IVOR0:
213 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
214 break;
215 case SPRN_IVOR1:
216 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
217 break;
218 case SPRN_IVOR2:
219 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
220 break;
221 case SPRN_IVOR3:
222 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
223 break;
224 case SPRN_IVOR4:
225 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
226 break;
227 case SPRN_IVOR5:
228 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
229 break;
230 case SPRN_IVOR6:
231 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
232 break;
233 case SPRN_IVOR7:
234 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
235 break;
236 case SPRN_IVOR8:
237 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
238 break;
239 case SPRN_IVOR9:
240 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
241 break;
242 case SPRN_IVOR10:
243 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
244 break;
245 case SPRN_IVOR11:
246 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
247 break;
248 case SPRN_IVOR12:
249 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
250 break;
251 case SPRN_IVOR13:
252 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
253 break;
254 case SPRN_IVOR14:
255 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
256 break;
257 case SPRN_IVOR15:
258 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
259 break;
260
261 default:
262 emulated = EMULATE_FAIL;
263 }
264
265 return emulated;
266}