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Diffstat (limited to 'arch/powerpc/kvm/e500_emulate.c')
-rw-r--r--arch/powerpc/kvm/e500_emulate.c119
1 files changed, 107 insertions, 12 deletions
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index b10a01243abd..051102d50c31 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
*
@@ -6,26 +7,26 @@
* Description:
* This file is derived from arch/powerpc/kvm/44x_emulate.c,
* by Hollis Blanchard <hollisb@us.ibm.com>.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
*/
#include <asm/kvm_ppc.h>
#include <asm/disassemble.h>
#include <asm/dbell.h>
+#include <asm/reg_booke.h>
#include "booke.h"
#include "e500.h"
+#define XOP_DCBTLS 166
#define XOP_MSGSND 206
#define XOP_MSGCLR 238
+#define XOP_MFTMR 366
#define XOP_TLBIVAX 786
#define XOP_TLBSX 914
#define XOP_TLBRE 946
#define XOP_TLBWE 978
#define XOP_TLBILX 18
+#define XOP_EHPRIV 270
#ifdef CONFIG_KVM_E500MC
static int dbell2prio(ulong param)
@@ -49,7 +50,7 @@ static int dbell2prio(ulong param)
static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb)
{
- ulong param = vcpu->arch.gpr[rb];
+ ulong param = vcpu->arch.regs.gpr[rb];
int prio = dbell2prio(param);
if (prio < 0)
@@ -61,10 +62,10 @@ static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb)
static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
{
- ulong param = vcpu->arch.gpr[rb];
+ ulong param = vcpu->arch.regs.gpr[rb];
int prio = dbell2prio(rb);
int pir = param & PPC_DBELL_PIR_MASK;
- int i;
+ unsigned long i;
struct kvm_vcpu *cvcpu;
if (prio < 0)
@@ -82,8 +83,50 @@ static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
}
#endif
-int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int inst, int *advance)
+static int kvmppc_e500_emul_ehpriv(struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
+{
+ int emulated = EMULATE_DONE;
+
+ switch (get_oc(inst)) {
+ case EHPRIV_OC_DEBUG:
+ vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+ vcpu->run->debug.arch.address = vcpu->arch.regs.nip;
+ vcpu->run->debug.arch.status = 0;
+ kvmppc_account_exit(vcpu, DEBUG_EXITS);
+ emulated = EMULATE_EXIT_USER;
+ *advance = 0;
+ break;
+ default:
+ emulated = EMULATE_FAIL;
+ }
+ return emulated;
+}
+
+static int kvmppc_e500_emul_dcbtls(struct kvm_vcpu *vcpu)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+
+ /* Always fail to lock the cache */
+ vcpu_e500->l1csr0 |= L1CSR0_CUL;
+ return EMULATE_DONE;
+}
+
+static int kvmppc_e500_emul_mftmr(struct kvm_vcpu *vcpu, unsigned int inst,
+ int rt)
+{
+ /* Expose one thread per vcpu */
+ if (get_tmrn(inst) == TMRN_TMCFG0) {
+ kvmppc_set_gpr(vcpu, rt,
+ 1 | (1 << TMRN_TMCFG0_NATHRD_SHIFT));
+ return EMULATE_DONE;
+ }
+
+ return EMULATE_FAIL;
+}
+
+int kvmppc_core_emulate_op_e500(struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
int ra = get_ra(inst);
@@ -95,6 +138,10 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
case 31:
switch (get_xop(inst)) {
+ case XOP_DCBTLS:
+ emulated = kvmppc_e500_emul_dcbtls(vcpu);
+ break;
+
#ifdef CONFIG_KVM_E500MC
case XOP_MSGSND:
emulated = kvmppc_e500_emul_msgsnd(vcpu, rb);
@@ -130,6 +177,14 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
emulated = kvmppc_e500_emul_tlbivax(vcpu, ea);
break;
+ case XOP_MFTMR:
+ emulated = kvmppc_e500_emul_mftmr(vcpu, inst, rt);
+ break;
+
+ case XOP_EHPRIV:
+ emulated = kvmppc_e500_emul_ehpriv(vcpu, inst, advance);
+ break;
+
default:
emulated = EMULATE_FAIL;
}
@@ -141,12 +196,12 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
if (emulated == EMULATE_FAIL)
- emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
+ emulated = kvmppc_booke_emulate_op(vcpu, inst, advance);
return emulated;
}
-int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
+int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
int emulated = EMULATE_DONE;
@@ -196,6 +251,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
break;
case SPRN_L1CSR1:
vcpu_e500->l1csr1 = spr_val;
+ vcpu_e500->l1csr1 &= ~(L1CSR1_ICFI | L1CSR1_ICLFR);
break;
case SPRN_HID0:
vcpu_e500->hid0 = spr_val;
@@ -209,7 +265,23 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
spr_val);
break;
+ case SPRN_PWRMGTCR0:
+ /*
+ * Guest relies on host power management configurations
+ * Treat the request as a general store
+ */
+ vcpu->arch.pwrmgtcr0 = spr_val;
+ break;
+
+ case SPRN_BUCSR:
+ /*
+ * If we are here, it means that we have already flushed the
+ * branch predictor, so just return to guest.
+ */
+ break;
+
/* extra exceptions */
+#ifdef CONFIG_SPE_POSSIBLE
case SPRN_IVOR32:
vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
break;
@@ -219,6 +291,15 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_IVOR34:
vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = spr_val;
break;
+#endif
+#ifdef CONFIG_ALTIVEC
+ case SPRN_IVOR32:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_ALTIVEC_UNAVAIL] = spr_val;
+ break;
+ case SPRN_IVOR33:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_ALTIVEC_ASSIST] = spr_val;
+ break;
+#endif
case SPRN_IVOR35:
vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
break;
@@ -237,7 +318,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
return emulated;
}
-int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
+int kvmppc_core_emulate_mfspr_e500(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
int emulated = EMULATE_DONE;
@@ -327,7 +408,12 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
*spr_val = vcpu->arch.eptcfg;
break;
+ case SPRN_PWRMGTCR0:
+ *spr_val = vcpu->arch.pwrmgtcr0;
+ break;
+
/* extra exceptions */
+#ifdef CONFIG_SPE_POSSIBLE
case SPRN_IVOR32:
*spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
break;
@@ -337,6 +423,15 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_IVOR34:
*spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
break;
+#endif
+#ifdef CONFIG_ALTIVEC
+ case SPRN_IVOR32:
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ALTIVEC_UNAVAIL];
+ break;
+ case SPRN_IVOR33:
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_ALTIVEC_ASSIST];
+ break;
+#endif
case SPRN_IVOR35:
*spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
break;
generated by cgit (git 2.34.1) at 2025-12-25 08:59:30 +0000