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.
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.
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.
15 * Copyright IBM Corp. 2008
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #include <linux/kvm_host.h>
21 #include <asm/disassemble.h>
25 #define OP_19_XOP_RFI 50
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
32 static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
34 vcpu->arch.pc = vcpu->arch.shared->srr0;
35 kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
38 int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
39 unsigned int inst, int *advance)
41 int emulated = EMULATE_DONE;
45 switch (get_op(inst)) {
47 switch (get_xop(inst)) {
49 kvmppc_emul_rfi(vcpu);
50 kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
55 emulated = EMULATE_FAIL;
61 switch (get_xop(inst)) {
65 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr);
66 kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
71 kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
72 kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
77 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
78 | (kvmppc_get_gpr(vcpu, rs) & MSR_EE);
79 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
82 case OP_31_XOP_WRTEEI:
83 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
85 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
89 emulated = EMULATE_FAIL;
95 emulated = EMULATE_FAIL;
101 int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
103 int emulated = EMULATE_DONE;
104 ulong spr_val = kvmppc_get_gpr(vcpu, rs);
108 vcpu->arch.shared->dar = spr_val; break;
110 vcpu->arch.esr = spr_val; break;
112 vcpu->arch.dbcr0 = spr_val; break;
114 vcpu->arch.dbcr1 = spr_val; break;
116 vcpu->arch.dbsr &= ~spr_val; break;
118 vcpu->arch.tsr &= ~spr_val; break;
120 vcpu->arch.tcr = spr_val;
121 kvmppc_emulate_dec(vcpu);
124 /* Note: SPRG4-7 are user-readable. These values are
125 * loaded into the real SPRGs when resuming the
128 vcpu->arch.sprg4 = spr_val; break;
130 vcpu->arch.sprg5 = spr_val; break;
132 vcpu->arch.sprg6 = spr_val; break;
134 vcpu->arch.sprg7 = spr_val; break;
137 vcpu->arch.ivpr = spr_val;
140 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
143 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
146 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
149 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
152 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
155 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
158 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
161 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
164 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
167 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
170 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
173 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
176 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
179 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
182 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
185 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
189 emulated = EMULATE_FAIL;
195 int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
197 int emulated = EMULATE_DONE;
201 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivpr); break;
203 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dar); break;
205 kvmppc_set_gpr(vcpu, rt, vcpu->arch.esr); break;
207 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr0); break;
209 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr1); break;
211 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbsr); break;
214 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL]);
217 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK]);
220 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
223 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE]);
226 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL]);
229 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT]);
232 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM]);
235 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL]);
238 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
241 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL]);
244 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER]);
247 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FIT]);
250 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG]);
253 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS]);
256 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS]);
259 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG]);
263 emulated = EMULATE_FAIL;