v4.19.13 snapshot.
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
new file mode 100644
index 0000000..3f8189e
--- /dev/null
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -0,0 +1,449 @@
+/*
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Yu Liu, <yu.liu@freescale.com>
+ *
+ * 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)
+{
+ int msg = param & PPC_DBELL_TYPE_MASK;
+ int prio = -1;
+
+ switch (msg) {
+ case PPC_DBELL_TYPE(PPC_DBELL):
+ prio = BOOKE_IRQPRIO_DBELL;
+ break;
+ case PPC_DBELL_TYPE(PPC_DBELL_CRIT):
+ prio = BOOKE_IRQPRIO_DBELL_CRIT;
+ break;
+ default:
+ break;
+ }
+
+ return prio;
+}
+
+static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb)
+{
+ ulong param = vcpu->arch.regs.gpr[rb];
+ int prio = dbell2prio(param);
+
+ if (prio < 0)
+ return EMULATE_FAIL;
+
+ clear_bit(prio, &vcpu->arch.pending_exceptions);
+ return EMULATE_DONE;
+}
+
+static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
+{
+ ulong param = vcpu->arch.regs.gpr[rb];
+ int prio = dbell2prio(rb);
+ int pir = param & PPC_DBELL_PIR_MASK;
+ int i;
+ struct kvm_vcpu *cvcpu;
+
+ if (prio < 0)
+ return EMULATE_FAIL;
+
+ kvm_for_each_vcpu(i, cvcpu, vcpu->kvm) {
+ int cpir = cvcpu->arch.shared->pir;
+ if ((param & PPC_DBELL_MSG_BRDCAST) || (cpir == pir)) {
+ set_bit(prio, &cvcpu->arch.pending_exceptions);
+ kvm_vcpu_kick(cvcpu);
+ }
+ }
+
+ return EMULATE_DONE;
+}
+#endif
+
+static int kvmppc_e500_emul_ehpriv(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
+{
+ int emulated = EMULATE_DONE;
+
+ switch (get_oc(inst)) {
+ case EHPRIV_OC_DEBUG:
+ run->exit_reason = KVM_EXIT_DEBUG;
+ run->debug.arch.address = vcpu->arch.regs.nip;
+ 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_run *run, struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
+{
+ int emulated = EMULATE_DONE;
+ int ra = get_ra(inst);
+ int rb = get_rb(inst);
+ int rt = get_rt(inst);
+ gva_t ea;
+
+ switch (get_op(inst)) {
+ 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);
+ break;
+
+ case XOP_MSGCLR:
+ emulated = kvmppc_e500_emul_msgclr(vcpu, rb);
+ break;
+#endif
+
+ case XOP_TLBRE:
+ emulated = kvmppc_e500_emul_tlbre(vcpu);
+ break;
+
+ case XOP_TLBWE:
+ emulated = kvmppc_e500_emul_tlbwe(vcpu);
+ break;
+
+ case XOP_TLBSX:
+ ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
+ emulated = kvmppc_e500_emul_tlbsx(vcpu, ea);
+ break;
+
+ case XOP_TLBILX: {
+ int type = rt & 0x3;
+ ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
+ emulated = kvmppc_e500_emul_tlbilx(vcpu, type, ea);
+ break;
+ }
+
+ case XOP_TLBIVAX:
+ ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
+ 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(run, vcpu, inst,
+ advance);
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ if (emulated == EMULATE_FAIL)
+ emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
+
+ return emulated;
+}
+
+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;
+
+ switch (sprn) {
+#ifndef CONFIG_KVM_BOOKE_HV
+ case SPRN_PID:
+ kvmppc_set_pid(vcpu, spr_val);
+ break;
+ case SPRN_PID1:
+ if (spr_val != 0)
+ return EMULATE_FAIL;
+ vcpu_e500->pid[1] = spr_val;
+ break;
+ case SPRN_PID2:
+ if (spr_val != 0)
+ return EMULATE_FAIL;
+ vcpu_e500->pid[2] = spr_val;
+ break;
+ case SPRN_MAS0:
+ vcpu->arch.shared->mas0 = spr_val;
+ break;
+ case SPRN_MAS1:
+ vcpu->arch.shared->mas1 = spr_val;
+ break;
+ case SPRN_MAS2:
+ vcpu->arch.shared->mas2 = spr_val;
+ break;
+ case SPRN_MAS3:
+ vcpu->arch.shared->mas7_3 &= ~(u64)0xffffffff;
+ vcpu->arch.shared->mas7_3 |= spr_val;
+ break;
+ case SPRN_MAS4:
+ vcpu->arch.shared->mas4 = spr_val;
+ break;
+ case SPRN_MAS6:
+ vcpu->arch.shared->mas6 = spr_val;
+ break;
+ case SPRN_MAS7:
+ vcpu->arch.shared->mas7_3 &= (u64)0xffffffff;
+ vcpu->arch.shared->mas7_3 |= (u64)spr_val << 32;
+ break;
+#endif
+ case SPRN_L1CSR0:
+ vcpu_e500->l1csr0 = spr_val;
+ vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
+ 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;
+ break;
+ case SPRN_HID1:
+ vcpu_e500->hid1 = spr_val;
+ break;
+
+ case SPRN_MMUCSR0:
+ emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
+ 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;
+
+ /* extra exceptions */
+#ifdef CONFIG_SPE_POSSIBLE
+ case SPRN_IVOR32:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
+ break;
+ case SPRN_IVOR33:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = spr_val;
+ break;
+ 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;
+#ifdef CONFIG_KVM_BOOKE_HV
+ case SPRN_IVOR36:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] = spr_val;
+ break;
+ case SPRN_IVOR37:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] = spr_val;
+ break;
+#endif
+ default:
+ emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, spr_val);
+ }
+
+ return emulated;
+}
+
+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;
+
+ switch (sprn) {
+#ifndef CONFIG_KVM_BOOKE_HV
+ case SPRN_PID:
+ *spr_val = vcpu_e500->pid[0];
+ break;
+ case SPRN_PID1:
+ *spr_val = vcpu_e500->pid[1];
+ break;
+ case SPRN_PID2:
+ *spr_val = vcpu_e500->pid[2];
+ break;
+ case SPRN_MAS0:
+ *spr_val = vcpu->arch.shared->mas0;
+ break;
+ case SPRN_MAS1:
+ *spr_val = vcpu->arch.shared->mas1;
+ break;
+ case SPRN_MAS2:
+ *spr_val = vcpu->arch.shared->mas2;
+ break;
+ case SPRN_MAS3:
+ *spr_val = (u32)vcpu->arch.shared->mas7_3;
+ break;
+ case SPRN_MAS4:
+ *spr_val = vcpu->arch.shared->mas4;
+ break;
+ case SPRN_MAS6:
+ *spr_val = vcpu->arch.shared->mas6;
+ break;
+ case SPRN_MAS7:
+ *spr_val = vcpu->arch.shared->mas7_3 >> 32;
+ break;
+#endif
+ case SPRN_DECAR:
+ *spr_val = vcpu->arch.decar;
+ break;
+ case SPRN_TLB0CFG:
+ *spr_val = vcpu->arch.tlbcfg[0];
+ break;
+ case SPRN_TLB1CFG:
+ *spr_val = vcpu->arch.tlbcfg[1];
+ break;
+ case SPRN_TLB0PS:
+ if (!has_feature(vcpu, VCPU_FTR_MMU_V2))
+ return EMULATE_FAIL;
+ *spr_val = vcpu->arch.tlbps[0];
+ break;
+ case SPRN_TLB1PS:
+ if (!has_feature(vcpu, VCPU_FTR_MMU_V2))
+ return EMULATE_FAIL;
+ *spr_val = vcpu->arch.tlbps[1];
+ break;
+ case SPRN_L1CSR0:
+ *spr_val = vcpu_e500->l1csr0;
+ break;
+ case SPRN_L1CSR1:
+ *spr_val = vcpu_e500->l1csr1;
+ break;
+ case SPRN_HID0:
+ *spr_val = vcpu_e500->hid0;
+ break;
+ case SPRN_HID1:
+ *spr_val = vcpu_e500->hid1;
+ break;
+ case SPRN_SVR:
+ *spr_val = vcpu_e500->svr;
+ break;
+
+ case SPRN_MMUCSR0:
+ *spr_val = 0;
+ break;
+
+ case SPRN_MMUCFG:
+ *spr_val = vcpu->arch.mmucfg;
+ break;
+ case SPRN_EPTCFG:
+ if (!has_feature(vcpu, VCPU_FTR_MMU_V2))
+ return EMULATE_FAIL;
+ /*
+ * Legacy Linux guests access EPTCFG register even if the E.PT
+ * category is disabled in the VM. Give them a chance to live.
+ */
+ *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;
+ case SPRN_IVOR33:
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
+ break;
+ 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;
+#ifdef CONFIG_KVM_BOOKE_HV
+ case SPRN_IVOR36:
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
+ break;
+ case SPRN_IVOR37:
+ *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
+ break;
+#endif
+ default:
+ emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
+ }
+
+ return emulated;
+}
+