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
16 * Copyright 2011 Freescale Semiconductor, Inc.
18 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
21 #include <linux/kvm_host.h>
22 #include <asm/disassemble.h>
26 #define OP_19_XOP_RFI 50
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
33 static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
35 vcpu->arch.pc = vcpu->arch.shared->srr0;
36 kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
39 int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
40 unsigned int inst, int *advance)
42 int emulated = EMULATE_DONE;
46 switch (get_op(inst)) {
48 switch (get_xop(inst)) {
50 kvmppc_emul_rfi(vcpu);
51 kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
56 emulated = EMULATE_FAIL;
62 switch (get_xop(inst)) {
66 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr);
67 kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
72 kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
73 kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
78 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
79 | (kvmppc_get_gpr(vcpu, rs) & MSR_EE);
80 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
83 case OP_31_XOP_WRTEEI:
84 vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
86 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
90 emulated = EMULATE_FAIL;
96 emulated = EMULATE_FAIL;
102 int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
104 int emulated = EMULATE_DONE;
105 ulong spr_val = kvmppc_get_gpr(vcpu, rs);
109 vcpu->arch.shared->dar = spr_val; break;
111 vcpu->arch.shared->esr = spr_val; break;
113 vcpu->arch.dbcr0 = spr_val; break;
115 vcpu->arch.dbcr1 = spr_val; break;
117 vcpu->arch.dbsr &= ~spr_val; break;
119 kvmppc_clr_tsr_bits(vcpu, spr_val);
122 kvmppc_set_tcr(vcpu, spr_val);
125 /* Note: SPRG4-7 are user-readable. These values are
126 * loaded into the real SPRGs when resuming the
129 vcpu->arch.shared->sprg4 = spr_val; break;
131 vcpu->arch.shared->sprg5 = spr_val; break;
133 vcpu->arch.shared->sprg6 = spr_val; break;
135 vcpu->arch.shared->sprg7 = spr_val; break;
138 vcpu->arch.ivpr = spr_val;
141 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
144 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
147 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
150 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
153 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
156 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
159 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
162 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
165 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
168 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
171 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
174 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
177 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
180 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
183 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
186 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
190 emulated = EMULATE_FAIL;
196 int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
198 int emulated = EMULATE_DONE;
202 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivpr); break;
204 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dar); break;
206 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->esr); break;
208 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr0); break;
210 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr1); break;
212 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbsr); break;
214 kvmppc_set_gpr(vcpu, rt, vcpu->arch.tsr); break;
216 kvmppc_set_gpr(vcpu, rt, vcpu->arch.tcr); break;
219 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL]);
222 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK]);
225 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
228 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE]);
231 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL]);
234 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT]);
237 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM]);
240 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL]);
243 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
246 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL]);
249 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER]);
252 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FIT]);
255 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG]);
258 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS]);
261 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS]);
264 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG]);
268 emulated = EMULATE_FAIL;