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KVM: PPC: Book3S HV: Make the guest hash table size configurable
[linux-2.6-block.git] / arch / powerpc / kvm / booke_emulate.c
CommitLineData
d0c7dc03
HB		 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
dfd4d47e 16 * Copyright 2011 Freescale Semiconductor, Inc.
d0c7dc03
HB		 17 *
18 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
19 */
20
21#include <linux/kvm_host.h>
22#include <asm/disassemble.h>
23
24#include "booke.h"
25
26#define OP_19_XOP_RFI 50
27
28#define OP_31_XOP_MFMSR 83
29#define OP_31_XOP_WRTEE 131
30#define OP_31_XOP_MTMSR 146
31#define OP_31_XOP_WRTEEI 163
32
33static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
34{
de7906c3
AG		 35 vcpu->arch.pc = vcpu->arch.shared->srr0;
36 kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
d0c7dc03
HB		 37}
38
39int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
40 unsigned int inst, int *advance)
41{
42 int emulated = EMULATE_DONE;
c46dc9a8
AG		 43 int rs = get_rs(inst);
44 int rt = get_rt(inst);
d0c7dc03
HB		 45
46 switch (get_op(inst)) {
47 case 19:
48 switch (get_xop(inst)) {
49 case OP_19_XOP_RFI:
50 kvmppc_emul_rfi(vcpu);
51 kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
52 *advance = 0;
53 break;
54
55 default:
56 emulated = EMULATE_FAIL;
57 break;
58 }
59 break;
60
61 case 31:
62 switch (get_xop(inst)) {
63
64 case OP_31_XOP_MFMSR:
666e7252 65 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr);
d0c7dc03
HB		 66 kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
67 break;
68
69 case OP_31_XOP_MTMSR:
d0c7dc03 70 kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
8e5b26b5 71 kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
d0c7dc03
HB		 72 break;
73
74 case OP_31_XOP_WRTEE:
666e7252 75 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
8e5b26b5 76 | (kvmppc_get_gpr(vcpu, rs) & MSR_EE);
d0c7dc03
HB		 77 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
78 break;
79
80 case OP_31_XOP_WRTEEI:
666e7252 81 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
d0c7dc03
HB		 82 | (inst & MSR_EE);
83 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
84 break;
85
86 default:
87 emulated = EMULATE_FAIL;
88 }
89
90 break;
91
92 default:
93 emulated = EMULATE_FAIL;
94 }
95
96 return emulated;
97}
98
d30f6e48
SW		 99/*
100 * NOTE: some of these registers are not emulated on BOOKE_HV (GS-mode).
101 * Their backing store is in real registers, and these functions
102 * will return the wrong result if called for them in another context
103 * (such as debugging).
104 */
54771e62 105int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
d0c7dc03
HB		 106{
107 int emulated = EMULATE_DONE;
108
109 switch (sprn) {
110 case SPRN_DEAR:
54771e62
AG		 111 vcpu->arch.shared->dar = spr_val;
112 break;
d0c7dc03 113 case SPRN_ESR:
54771e62
AG		 114 vcpu->arch.shared->esr = spr_val;
115 break;
d0c7dc03 116 case SPRN_DBCR0:
54771e62
AG		 117 vcpu->arch.dbcr0 = spr_val;
118 break;
d0c7dc03 119 case SPRN_DBCR1:
54771e62
AG		 120 vcpu->arch.dbcr1 = spr_val;
121 break;
f7b200af 122 case SPRN_DBSR:
54771e62
AG		 123 vcpu->arch.dbsr &= ~spr_val;
124 break;
d0c7dc03 125 case SPRN_TSR:
dfd4d47e
SW		 126 kvmppc_clr_tsr_bits(vcpu, spr_val);
127 break;
d0c7dc03 128 case SPRN_TCR:
dfd4d47e 129 kvmppc_set_tcr(vcpu, spr_val);
d0c7dc03
HB		 130 break;
131
d30f6e48
SW		 132 /*
133 * Note: SPRG4-7 are user-readable.
134 * These values are loaded into the real SPRGs when resuming the
135 * guest (PR-mode only).
136 */
d0c7dc03 137 case SPRN_SPRG4:
54771e62
AG		 138 vcpu->arch.shared->sprg4 = spr_val;
139 break;
d0c7dc03 140 case SPRN_SPRG5:
54771e62
AG		 141 vcpu->arch.shared->sprg5 = spr_val;
142 break;
d0c7dc03 143 case SPRN_SPRG6:
54771e62
AG		 144 vcpu->arch.shared->sprg6 = spr_val;
145 break;
d0c7dc03 146 case SPRN_SPRG7:
54771e62
AG		 147 vcpu->arch.shared->sprg7 = spr_val;
148 break;
d0c7dc03
HB		 149
150 case SPRN_IVPR:
8e5b26b5 151 vcpu->arch.ivpr = spr_val;
d30f6e48
SW		 152#ifdef CONFIG_KVM_BOOKE_HV
153 mtspr(SPRN_GIVPR, spr_val);
154#endif
d0c7dc03
HB		 155 break;
156 case SPRN_IVOR0:
8e5b26b5 157 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
d0c7dc03
HB		 158 break;
159 case SPRN_IVOR1:
8e5b26b5 160 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
d0c7dc03
HB		 161 break;
162 case SPRN_IVOR2:
8e5b26b5 163 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
d30f6e48
SW		 164#ifdef CONFIG_KVM_BOOKE_HV
165 mtspr(SPRN_GIVOR2, spr_val);
166#endif
d0c7dc03
HB		 167 break;
168 case SPRN_IVOR3:
8e5b26b5 169 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
d0c7dc03
HB		 170 break;
171 case SPRN_IVOR4:
8e5b26b5 172 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
d0c7dc03
HB		 173 break;
174 case SPRN_IVOR5:
8e5b26b5 175 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
d0c7dc03
HB		 176 break;
177 case SPRN_IVOR6:
8e5b26b5 178 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
d0c7dc03
HB		 179 break;
180 case SPRN_IVOR7:
8e5b26b5 181 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
d0c7dc03
HB		 182 break;
183 case SPRN_IVOR8:
8e5b26b5 184 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
d30f6e48
SW		 185#ifdef CONFIG_KVM_BOOKE_HV
186 mtspr(SPRN_GIVOR8, spr_val);
187#endif
d0c7dc03
HB		 188 break;
189 case SPRN_IVOR9:
8e5b26b5 190 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
d0c7dc03
HB		 191 break;
192 case SPRN_IVOR10:
8e5b26b5 193 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
d0c7dc03
HB		 194 break;
195 case SPRN_IVOR11:
8e5b26b5 196 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
d0c7dc03
HB		 197 break;
198 case SPRN_IVOR12:
8e5b26b5 199 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
d0c7dc03
HB		 200 break;
201 case SPRN_IVOR13:
8e5b26b5 202 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
d0c7dc03
HB		 203 break;
204 case SPRN_IVOR14:
8e5b26b5 205 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
d0c7dc03
HB		 206 break;
207 case SPRN_IVOR15:
8e5b26b5 208 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
d0c7dc03
HB		 209 break;
210
211 default:
212 emulated = EMULATE_FAIL;
213 }
214
215 return emulated;
216}
217
54771e62 218int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
d0c7dc03
HB		 219{
220 int emulated = EMULATE_DONE;
221
222 switch (sprn) {
223 case SPRN_IVPR:
54771e62
AG		 224 *spr_val = vcpu->arch.ivpr;
225 break;
d0c7dc03 226 case SPRN_DEAR:
54771e62
AG		 227 *spr_val = vcpu->arch.shared->dar;
228 break;
d0c7dc03 229 case SPRN_ESR:
54771e62
AG		 230 *spr_val = vcpu->arch.shared->esr;
231 break;
d0c7dc03 232 case SPRN_DBCR0:
54771e62
AG		 233 *spr_val = vcpu->arch.dbcr0;
234 break;
d0c7dc03 235 case SPRN_DBCR1:
54771e62
AG		 236 *spr_val = vcpu->arch.dbcr1;
237 break;
f7b200af 238 case SPRN_DBSR:
54771e62
AG		 239 *spr_val = vcpu->arch.dbsr;
240 break;
dfd4d47e 241 case SPRN_TSR:
54771e62
AG		 242 *spr_val = vcpu->arch.tsr;
243 break;
dfd4d47e 244 case SPRN_TCR:
54771e62
AG		 245 *spr_val = vcpu->arch.tcr;
246 break;
d0c7dc03
HB		 247
248 case SPRN_IVOR0:
54771e62 249 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
d0c7dc03
HB		 250 break;
251 case SPRN_IVOR1:
54771e62 252 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
d0c7dc03
HB		 253 break;
254 case SPRN_IVOR2:
54771e62 255 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
d0c7dc03
HB		 256 break;
257 case SPRN_IVOR3:
54771e62 258 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
d0c7dc03
HB		 259 break;
260 case SPRN_IVOR4:
54771e62 261 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
d0c7dc03
HB		 262 break;
263 case SPRN_IVOR5:
54771e62 264 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
d0c7dc03
HB		 265 break;
266 case SPRN_IVOR6:
54771e62 267 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
d0c7dc03
HB		 268 break;
269 case SPRN_IVOR7:
54771e62 270 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
d0c7dc03
HB		 271 break;
272 case SPRN_IVOR8:
54771e62 273 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
d0c7dc03
HB		 274 break;
275 case SPRN_IVOR9:
54771e62 276 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
d0c7dc03
HB		 277 break;
278 case SPRN_IVOR10:
54771e62 279 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
d0c7dc03
HB		 280 break;
281 case SPRN_IVOR11:
54771e62 282 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
d0c7dc03
HB		 283 break;
284 case SPRN_IVOR12:
54771e62 285 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
d0c7dc03
HB		 286 break;
287 case SPRN_IVOR13:
54771e62 288 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
d0c7dc03
HB		 289 break;
290 case SPRN_IVOR14:
54771e62 291 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
d0c7dc03
HB		 292 break;
293 case SPRN_IVOR15:
54771e62 294 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
d0c7dc03
HB		 295 break;
296
297 default:
298 emulated = EMULATE_FAIL;
299 }
300
301 return emulated;
302}
Linux 6.x block layer and io_uring tree(s)