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Diffstat (limited to 'arch/powerpc/kvm/booke_emulate.c')
-rw-r--r--arch/powerpc/kvm/booke_emulate.c184
1 files changed, 138 insertions, 46 deletions
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 1260f5f24c0..27a4b2877c1 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -13,6 +13,7 @@
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright IBM Corp. 2008
+ * Copyright 2011 Freescale Semiconductor, Inc.
*
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
*/
@@ -23,6 +24,7 @@
#include "booke.h"
#define OP_19_XOP_RFI 50
+#define OP_19_XOP_RFCI 51
#define OP_31_XOP_MFMSR 83
#define OP_31_XOP_WRTEE 131
@@ -35,12 +37,18 @@ static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
}
+static void kvmppc_emul_rfci(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.pc = vcpu->arch.csrr0;
+ kvmppc_set_msr(vcpu, vcpu->arch.csrr1);
+}
+
int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
- int rs;
- int rt;
+ int rs = get_rs(inst);
+ int rt = get_rt(inst);
switch (get_op(inst)) {
case 19:
@@ -51,6 +59,12 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
*advance = 0;
break;
+ case OP_19_XOP_RFCI:
+ kvmppc_emul_rfci(vcpu);
+ kvmppc_set_exit_type(vcpu, EMULATED_RFCI_EXITS);
+ *advance = 0;
+ break;
+
default:
emulated = EMULATE_FAIL;
break;
@@ -61,19 +75,16 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
switch (get_xop(inst)) {
case OP_31_XOP_MFMSR:
- rt = get_rt(inst);
kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr);
kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
break;
case OP_31_XOP_MTMSR:
- rs = get_rs(inst);
kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
break;
case OP_31_XOP_WRTEE:
- rs = get_rs(inst);
vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
| (kvmppc_get_gpr(vcpu, rs) & MSR_EE);
kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
@@ -98,43 +109,79 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
return emulated;
}
-int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
+/*
+ * NOTE: some of these registers are not emulated on BOOKE_HV (GS-mode).
+ * Their backing store is in real registers, and these functions
+ * will return the wrong result if called for them in another context
+ * (such as debugging).
+ */
+int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
int emulated = EMULATE_DONE;
- ulong spr_val = kvmppc_get_gpr(vcpu, rs);
switch (sprn) {
case SPRN_DEAR:
- vcpu->arch.shared->dar = spr_val; break;
+ vcpu->arch.shared->dar = spr_val;
+ break;
case SPRN_ESR:
- vcpu->arch.esr = spr_val; break;
+ vcpu->arch.shared->esr = spr_val;
+ break;
+ case SPRN_CSRR0:
+ vcpu->arch.csrr0 = spr_val;
+ break;
+ case SPRN_CSRR1:
+ vcpu->arch.csrr1 = spr_val;
+ break;
case SPRN_DBCR0:
- vcpu->arch.dbcr0 = spr_val; break;
+ vcpu->arch.dbg_reg.dbcr0 = spr_val;
+ break;
case SPRN_DBCR1:
- vcpu->arch.dbcr1 = spr_val; break;
+ vcpu->arch.dbg_reg.dbcr1 = spr_val;
+ break;
case SPRN_DBSR:
- vcpu->arch.dbsr &= ~spr_val; break;
+ vcpu->arch.dbsr &= ~spr_val;
+ break;
case SPRN_TSR:
- vcpu->arch.tsr &= ~spr_val; break;
+ kvmppc_clr_tsr_bits(vcpu, spr_val);
+ break;
case SPRN_TCR:
- vcpu->arch.tcr = spr_val;
- kvmppc_emulate_dec(vcpu);
+ /*
+ * WRC is a 2-bit field that is supposed to preserve its
+ * value once written to non-zero.
+ */
+ if (vcpu->arch.tcr & TCR_WRC_MASK) {
+ spr_val &= ~TCR_WRC_MASK;
+ spr_val |= vcpu->arch.tcr & TCR_WRC_MASK;
+ }
+ kvmppc_set_tcr(vcpu, spr_val);
break;
- /* Note: SPRG4-7 are user-readable. These values are
- * loaded into the real SPRGs when resuming the
- * guest. */
+ case SPRN_DECAR:
+ vcpu->arch.decar = spr_val;
+ break;
+ /*
+ * Note: SPRG4-7 are user-readable.
+ * These values are loaded into the real SPRGs when resuming the
+ * guest (PR-mode only).
+ */
case SPRN_SPRG4:
- vcpu->arch.sprg4 = spr_val; break;
+ vcpu->arch.shared->sprg4 = spr_val;
+ break;
case SPRN_SPRG5:
- vcpu->arch.sprg5 = spr_val; break;
+ vcpu->arch.shared->sprg5 = spr_val;
+ break;
case SPRN_SPRG6:
- vcpu->arch.sprg6 = spr_val; break;
+ vcpu->arch.shared->sprg6 = spr_val;
+ break;
case SPRN_SPRG7:
- vcpu->arch.sprg7 = spr_val; break;
+ vcpu->arch.shared->sprg7 = spr_val;
+ break;
case SPRN_IVPR:
vcpu->arch.ivpr = spr_val;
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_GIVPR, spr_val);
+#endif
break;
case SPRN_IVOR0:
vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
@@ -144,6 +191,9 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
break;
case SPRN_IVOR2:
vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_GIVOR2, spr_val);
+#endif
break;
case SPRN_IVOR3:
vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
@@ -162,6 +212,9 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
break;
case SPRN_IVOR8:
vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_GIVOR8, spr_val);
+#endif
break;
case SPRN_IVOR9:
vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
@@ -184,7 +237,17 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
case SPRN_IVOR15:
vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
break;
-
+ case SPRN_MCSR:
+ vcpu->arch.mcsr &= ~spr_val;
+ break;
+#if defined(CONFIG_64BIT)
+ case SPRN_EPCR:
+ kvmppc_set_epcr(vcpu, spr_val);
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
+#endif
+ break;
+#endif
default:
emulated = EMULATE_FAIL;
}
@@ -192,72 +255,101 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
return emulated;
}
-int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
+int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
{
int emulated = EMULATE_DONE;
switch (sprn) {
case SPRN_IVPR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivpr); break;
+ *spr_val = vcpu->arch.ivpr;
+ break;
case SPRN_DEAR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dar); break;
+ *spr_val = vcpu->arch.shared->dar;
+ break;
case SPRN_ESR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.esr); break;
+ *spr_val = vcpu->arch.shared->esr;
+ break;
+ case SPRN_EPR:
+ *spr_val = vcpu->arch.epr;
+ break;
+ case SPRN_CSRR0:
+ *spr_val = vcpu->arch.csrr0;
+ break;
+ case SPRN_CSRR1:
+ *spr_val = vcpu->arch.csrr1;
+ break;
case SPRN_DBCR0:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr0); break;
+ *spr_val = vcpu->arch.dbg_reg.dbcr0;
+ break;
case SPRN_DBCR1:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr1); break;
+ *spr_val = vcpu->arch.dbg_reg.dbcr1;
+ break;
case SPRN_DBSR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbsr); break;
+ *spr_val = vcpu->arch.dbsr;
+ break;
+ case SPRN_TSR:
+ *spr_val = vcpu->arch.tsr;
+ break;
+ case SPRN_TCR:
+ *spr_val = vcpu->arch.tcr;
+ break;
case SPRN_IVOR0:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
break;
case SPRN_IVOR1:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
break;
case SPRN_IVOR2:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
break;
case SPRN_IVOR3:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
break;
case SPRN_IVOR4:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
break;
case SPRN_IVOR5:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
break;
case SPRN_IVOR6:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
break;
case SPRN_IVOR7:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
break;
case SPRN_IVOR8:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
break;
case SPRN_IVOR9:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
break;
case SPRN_IVOR10:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
break;
case SPRN_IVOR11:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FIT]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
break;
case SPRN_IVOR12:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
break;
case SPRN_IVOR13:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
break;
case SPRN_IVOR14:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
break;
case SPRN_IVOR15:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG]);
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
+ break;
+ case SPRN_MCSR:
+ *spr_val = vcpu->arch.mcsr;
+ break;
+#if defined(CONFIG_64BIT)
+ case SPRN_EPCR:
+ *spr_val = vcpu->arch.epcr;
break;
+#endif
default:
emulated = EMULATE_FAIL;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 19:15:06 +0000