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-rw-r--r--arch/powerpc/kvm/e500_emulate.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
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+/*
+ * 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/kvm_e500.h>
+
+#include "booke.h"
+#include "e500_tlb.h"
+
+#define XOP_TLBIVAX 786
+#define XOP_TLBSX 914
+#define XOP_TLBRE 946
+#define XOP_TLBWE 978
+
+int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
+{
+ int emulated = EMULATE_DONE;
+ int ra;
+ int rb;
+
+ switch (get_op(inst)) {
+ case 31:
+ switch (get_xop(inst)) {
+
+ case XOP_TLBRE:
+ emulated = kvmppc_e500_emul_tlbre(vcpu);
+ break;
+
+ case XOP_TLBWE:
+ emulated = kvmppc_e500_emul_tlbwe(vcpu);
+ break;
+
+ case XOP_TLBSX:
+ rb = get_rb(inst);
+ emulated = kvmppc_e500_emul_tlbsx(vcpu,rb);
+ break;
+
+ case XOP_TLBIVAX:
+ ra = get_ra(inst);
+ rb = get_rb(inst);
+ emulated = kvmppc_e500_emul_tlbivax(vcpu, ra, rb);
+ 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(struct kvm_vcpu *vcpu, int sprn, int rs)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ int emulated = EMULATE_DONE;
+ ulong spr_val = kvmppc_get_gpr(vcpu, rs);
+
+ switch (sprn) {
+ 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_e500->mas0 = spr_val; break;
+ case SPRN_MAS1:
+ vcpu_e500->mas1 = spr_val; break;
+ case SPRN_MAS2:
+ vcpu_e500->mas2 = spr_val; break;
+ case SPRN_MAS3:
+ vcpu_e500->mas3 = spr_val; break;
+ case SPRN_MAS4:
+ vcpu_e500->mas4 = spr_val; break;
+ case SPRN_MAS6:
+ vcpu_e500->mas6 = spr_val; break;
+ case SPRN_MAS7:
+ vcpu_e500->mas7 = spr_val; break;
+ case SPRN_L1CSR0:
+ vcpu_e500->l1csr0 = spr_val;
+ vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
+ break;
+ case SPRN_L1CSR1:
+ vcpu_e500->l1csr1 = spr_val; 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;
+
+ /* extra exceptions */
+ 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;
+ case SPRN_IVOR35:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
+ break;
+
+ default:
+ emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
+ }
+
+ return emulated;
+}
+
+int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ int emulated = EMULATE_DONE;
+
+ switch (sprn) {
+ case SPRN_PID:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[0]); break;
+ case SPRN_PID1:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[1]); break;
+ case SPRN_PID2:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[2]); break;
+ case SPRN_MAS0:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas0); break;
+ case SPRN_MAS1:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas1); break;
+ case SPRN_MAS2:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas2); break;
+ case SPRN_MAS3:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas3); break;
+ case SPRN_MAS4:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas4); break;
+ case SPRN_MAS6:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas6); break;
+ case SPRN_MAS7:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->mas7); break;
+
+ case SPRN_TLB0CFG:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->tlb0cfg); break;
+ case SPRN_TLB1CFG:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->tlb1cfg); break;
+ case SPRN_L1CSR0:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr0); break;
+ case SPRN_L1CSR1:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr1); break;
+ case SPRN_HID0:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid0); break;
+ case SPRN_HID1:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid1); break;
+ case SPRN_SVR:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->svr); break;
+
+ case SPRN_MMUCSR0:
+ kvmppc_set_gpr(vcpu, rt, 0); break;
+
+ case SPRN_MMUCFG:
+ kvmppc_set_gpr(vcpu, rt, mfspr(SPRN_MMUCFG)); break;
+
+ /* extra exceptions */
+ case SPRN_IVOR32:
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL]);
+ break;
+ case SPRN_IVOR33:
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA]);
+ break;
+ case SPRN_IVOR34:
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND]);
+ break;
+ case SPRN_IVOR35:
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR]);
+ break;
+ default:
+ emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
+ }
+
+ return emulated;
+}
+