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@@ -0,0 +1,342 @@
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+/*
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+ * Copyright (C) 2010 Freescale Semiconductor, Inc. All rights reserved.
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+ *
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+ * Author: Varun Sethi, <varun.sethi@freescale.com>
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+ *
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+ * Description:
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+ * This file is derived from arch/powerpc/kvm/e500.c,
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+ * by Yu Liu <yu.liu@freescale.com>.
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License, version 2, as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include <linux/kvm_host.h>
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+#include <linux/slab.h>
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+#include <linux/err.h>
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+#include <linux/export.h>
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+
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+#include <asm/reg.h>
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+#include <asm/cputable.h>
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+#include <asm/tlbflush.h>
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+#include <asm/kvm_ppc.h>
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+#include <asm/dbell.h>
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+
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+#include "booke.h"
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+#include "e500.h"
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+
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+void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type)
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+{
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+ enum ppc_dbell dbell_type;
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+ unsigned long tag;
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+
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+ switch (type) {
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+ case INT_CLASS_NONCRIT:
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+ dbell_type = PPC_G_DBELL;
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+ break;
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+ case INT_CLASS_CRIT:
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+ dbell_type = PPC_G_DBELL_CRIT;
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+ break;
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+ case INT_CLASS_MC:
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+ dbell_type = PPC_G_DBELL_MC;
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+ break;
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+ default:
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+ WARN_ONCE(1, "%s: unknown int type %d\n", __func__, type);
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+ return;
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+ }
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+
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+
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+ tag = PPC_DBELL_LPID(vcpu->kvm->arch.lpid) | vcpu->vcpu_id;
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+ mb();
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+ ppc_msgsnd(dbell_type, 0, tag);
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+}
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+
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+/* gtlbe must not be mapped by more than one host tlb entry */
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+void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
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+ struct kvm_book3e_206_tlb_entry *gtlbe)
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+{
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+ unsigned int tid, ts;
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+ u32 val, eaddr, lpid;
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+ unsigned long flags;
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+
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+ ts = get_tlb_ts(gtlbe);
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+ tid = get_tlb_tid(gtlbe);
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+ lpid = vcpu_e500->vcpu.kvm->arch.lpid;
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+
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+ /* We search the host TLB to invalidate its shadow TLB entry */
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+ val = (tid << 16) | ts;
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+ eaddr = get_tlb_eaddr(gtlbe);
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+
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+ local_irq_save(flags);
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+
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+ mtspr(SPRN_MAS6, val);
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+ mtspr(SPRN_MAS5, MAS5_SGS | lpid);
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+
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+ asm volatile("tlbsx 0, %[eaddr]\n" : : [eaddr] "r" (eaddr));
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+ val = mfspr(SPRN_MAS1);
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+ if (val & MAS1_VALID) {
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+ mtspr(SPRN_MAS1, val & ~MAS1_VALID);
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+ asm volatile("tlbwe");
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+ }
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+ mtspr(SPRN_MAS5, 0);
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+ /* NOTE: tlbsx also updates mas8, so clear it for host tlbwe */
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+ mtspr(SPRN_MAS8, 0);
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+ isync();
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+
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+ local_irq_restore(flags);
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+}
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+
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+void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500)
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+{
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+ unsigned long flags;
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+
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+ local_irq_save(flags);
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+ mtspr(SPRN_MAS5, MAS5_SGS | vcpu_e500->vcpu.kvm->arch.lpid);
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+ asm volatile("tlbilxlpid");
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+ mtspr(SPRN_MAS5, 0);
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+ local_irq_restore(flags);
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+}
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+
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+void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid)
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+{
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+ vcpu->arch.pid = pid;
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+}
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+
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+void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr)
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+{
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+}
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+
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+void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
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+
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+ kvmppc_booke_vcpu_load(vcpu, cpu);
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+
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+ mtspr(SPRN_LPID, vcpu->kvm->arch.lpid);
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+ mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
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+ mtspr(SPRN_GPIR, vcpu->vcpu_id);
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+ mtspr(SPRN_MSRP, vcpu->arch.shadow_msrp);
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+ mtspr(SPRN_EPLC, vcpu->arch.eplc);
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+ mtspr(SPRN_EPSC, vcpu->arch.epsc);
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+
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+ mtspr(SPRN_GIVPR, vcpu->arch.ivpr);
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+ mtspr(SPRN_GIVOR2, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
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+ mtspr(SPRN_GIVOR8, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
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+ mtspr(SPRN_GSPRG0, (unsigned long)vcpu->arch.shared->sprg0);
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+ mtspr(SPRN_GSPRG1, (unsigned long)vcpu->arch.shared->sprg1);
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+ mtspr(SPRN_GSPRG2, (unsigned long)vcpu->arch.shared->sprg2);
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+ mtspr(SPRN_GSPRG3, (unsigned long)vcpu->arch.shared->sprg3);
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+
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+ mtspr(SPRN_GSRR0, vcpu->arch.shared->srr0);
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+ mtspr(SPRN_GSRR1, vcpu->arch.shared->srr1);
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+
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+ mtspr(SPRN_GEPR, vcpu->arch.epr);
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+ mtspr(SPRN_GDEAR, vcpu->arch.shared->dar);
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+ mtspr(SPRN_GESR, vcpu->arch.shared->esr);
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+
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+ if (vcpu->arch.oldpir != mfspr(SPRN_PIR))
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+ kvmppc_e500_tlbil_all(vcpu_e500);
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+
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+ kvmppc_load_guest_fp(vcpu);
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+}
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+
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+void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
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+{
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+ vcpu->arch.eplc = mfspr(SPRN_EPLC);
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+ vcpu->arch.epsc = mfspr(SPRN_EPSC);
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+
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+ vcpu->arch.shared->sprg0 = mfspr(SPRN_GSPRG0);
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+ vcpu->arch.shared->sprg1 = mfspr(SPRN_GSPRG1);
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+ vcpu->arch.shared->sprg2 = mfspr(SPRN_GSPRG2);
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+ vcpu->arch.shared->sprg3 = mfspr(SPRN_GSPRG3);
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+
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+ vcpu->arch.shared->srr0 = mfspr(SPRN_GSRR0);
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+ vcpu->arch.shared->srr1 = mfspr(SPRN_GSRR1);
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+
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+ vcpu->arch.epr = mfspr(SPRN_GEPR);
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+ vcpu->arch.shared->dar = mfspr(SPRN_GDEAR);
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+ vcpu->arch.shared->esr = mfspr(SPRN_GESR);
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+
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+ vcpu->arch.oldpir = mfspr(SPRN_PIR);
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+
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+ kvmppc_booke_vcpu_put(vcpu);
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+}
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+
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+int kvmppc_core_check_processor_compat(void)
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+{
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+ int r;
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+
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+ if (strcmp(cur_cpu_spec->cpu_name, "e500mc") == 0)
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+ r = 0;
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+ else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0)
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+ r = 0;
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+ else
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+ r = -ENOTSUPP;
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+
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+ return r;
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+}
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+
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+int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
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+
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+ vcpu->arch.shadow_epcr = SPRN_EPCR_DSIGS | SPRN_EPCR_DGTMI | \
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+ SPRN_EPCR_DUVD;
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+ vcpu->arch.shadow_msrp = MSRP_UCLEP | MSRP_DEP | MSRP_PMMP;
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+ vcpu->arch.eplc = EPC_EGS | (vcpu->kvm->arch.lpid << EPC_ELPID_SHIFT);
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+ vcpu->arch.epsc = vcpu->arch.eplc;
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+
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+ vcpu->arch.pvr = mfspr(SPRN_PVR);
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+ vcpu_e500->svr = mfspr(SPRN_SVR);
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+
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+ vcpu->arch.cpu_type = KVM_CPU_E500MC;
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+
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+ return 0;
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+}
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+
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+void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
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+
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+ sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_PM |
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+ KVM_SREGS_E_PC;
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+ sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
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+
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+ sregs->u.e.impl.fsl.features = 0;
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+ sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
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+ sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
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+ sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
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+
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+ kvmppc_get_sregs_e500_tlb(vcpu, sregs);
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+
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+ sregs->u.e.ivor_high[3] =
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+ vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
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+ sregs->u.e.ivor_high[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
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+ sregs->u.e.ivor_high[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
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+
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+ kvmppc_get_sregs_ivor(vcpu, sregs);
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+}
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+
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+int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
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+ int ret;
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+
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+ if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
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+ vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
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+ vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
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+ vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
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+ }
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+
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+ ret = kvmppc_set_sregs_e500_tlb(vcpu, sregs);
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+ if (ret < 0)
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+ return ret;
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+
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+ if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
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+ return 0;
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+
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+ if (sregs->u.e.features & KVM_SREGS_E_PM) {
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+ vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
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+ sregs->u.e.ivor_high[3];
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+ }
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+
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+ if (sregs->u.e.features & KVM_SREGS_E_PC) {
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+ vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] =
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+ sregs->u.e.ivor_high[4];
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+ vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] =
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+ sregs->u.e.ivor_high[5];
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+ }
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+
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+ return kvmppc_set_sregs_ivor(vcpu, sregs);
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+}
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+
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+struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500;
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+ struct kvm_vcpu *vcpu;
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+ int err;
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+
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+ vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
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+ if (!vcpu_e500) {
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+ err = -ENOMEM;
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+ goto out;
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+ }
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+ vcpu = &vcpu_e500->vcpu;
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+
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+ /* Invalid PIR value -- this LPID dosn't have valid state on any cpu */
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+ vcpu->arch.oldpir = 0xffffffff;
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+
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+ err = kvm_vcpu_init(vcpu, kvm, id);
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+ if (err)
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+ goto free_vcpu;
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+
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+ err = kvmppc_e500_tlb_init(vcpu_e500);
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+ if (err)
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+ goto uninit_vcpu;
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+
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+ vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
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+ if (!vcpu->arch.shared)
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+ goto uninit_tlb;
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+
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+ return vcpu;
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+
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+uninit_tlb:
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+ kvmppc_e500_tlb_uninit(vcpu_e500);
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+uninit_vcpu:
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+ kvm_vcpu_uninit(vcpu);
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+
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+free_vcpu:
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+ kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
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+out:
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+ return ERR_PTR(err);
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+}
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+
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+void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
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+{
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+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
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+
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+ free_page((unsigned long)vcpu->arch.shared);
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+ kvmppc_e500_tlb_uninit(vcpu_e500);
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+ kvm_vcpu_uninit(vcpu);
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+ kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
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+}
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+
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+int kvmppc_core_init_vm(struct kvm *kvm)
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+{
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+ int lpid;
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+
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+ lpid = kvmppc_alloc_lpid();
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+ if (lpid < 0)
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+ return lpid;
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+
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+ kvm->arch.lpid = lpid;
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+ return 0;
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+}
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+
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+void kvmppc_core_destroy_vm(struct kvm *kvm)
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+{
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+ kvmppc_free_lpid(kvm->arch.lpid);
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+}
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+
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+static int __init kvmppc_e500mc_init(void)
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+{
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+ int r;
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+
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+ r = kvmppc_booke_init();
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+ if (r)
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+ return r;
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+
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+ kvmppc_init_lpid(64);
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+ kvmppc_claim_lpid(0); /* host */
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+
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+ return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
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+}
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+
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+static void __exit kvmppc_e500mc_exit(void)
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+{
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+ kvmppc_booke_exit();
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+}
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+
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+module_init(kvmppc_e500mc_init);
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+module_exit(kvmppc_e500mc_exit);
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Scott Wood