/* * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved. * * Author: Yu Liu, * * Description: * This file is derived from arch/powerpc/kvm/44x.c, * by Hollis Blanchard . * * 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 #include #include #include #include #include #include #include #include #include "booke.h" #include "e500_tlb.h" void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu) { } void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu) { } void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { kvmppc_booke_vcpu_load(vcpu, cpu); kvmppc_e500_tlb_load(vcpu, cpu); } void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) { kvmppc_e500_tlb_put(vcpu); #ifdef CONFIG_SPE if (vcpu->arch.shadow_msr & MSR_SPE) kvmppc_vcpu_disable_spe(vcpu); #endif kvmppc_booke_vcpu_put(vcpu); } int kvmppc_core_check_processor_compat(void) { int r; if (strcmp(cur_cpu_spec->cpu_name, "e500v2") == 0) r = 0; else r = -ENOTSUPP; return r; } int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); kvmppc_e500_tlb_setup(vcpu_e500); /* Registers init */ vcpu->arch.pvr = mfspr(SPRN_PVR); vcpu_e500->svr = mfspr(SPRN_SVR); vcpu->arch.cpu_type = KVM_CPU_E500V2; return 0; } /* 'linear_address' is actually an encoding of AS|PID|EADDR . */ int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, struct kvm_translation *tr) { int index; gva_t eaddr; u8 pid; u8 as; eaddr = tr->linear_address; pid = (tr->linear_address >> 32) & 0xff; as = (tr->linear_address >> 40) & 0x1; index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as); if (index < 0) { tr->valid = 0; return 0; } tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr); /* XXX what does "writeable" and "usermode" even mean? */ tr->valid = 1; return 0; } void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_SPE | KVM_SREGS_E_PM; sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL; sregs->u.e.impl.fsl.features = 0; sregs->u.e.impl.fsl.svr = vcpu_e500->svr; sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0; sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar; sregs->u.e.mas0 = vcpu->arch.shared->mas0; sregs->u.e.mas1 = vcpu->arch.shared->mas1; sregs->u.e.mas2 = vcpu->arch.shared->mas2; sregs->u.e.mas7_3 = vcpu->arch.shared->mas7_3; sregs->u.e.mas4 = vcpu->arch.shared->mas4; sregs->u.e.mas6 = vcpu->arch.shared->mas6; sregs->u.e.mmucfg = mfspr(SPRN_MMUCFG); sregs->u.e.tlbcfg[0] = vcpu_e500->tlb0cfg; sregs->u.e.tlbcfg[1] = vcpu_e500->tlb1cfg; sregs->u.e.tlbcfg[2] = 0; sregs->u.e.tlbcfg[3] = 0; sregs->u.e.ivor_high[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL]; sregs->u.e.ivor_high[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA]; sregs->u.e.ivor_high[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND]; sregs->u.e.ivor_high[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR]; kvmppc_get_sregs_ivor(vcpu, sregs); } int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) { vcpu_e500->svr = sregs->u.e.impl.fsl.svr; vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0; vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar; } if (sregs->u.e.features & KVM_SREGS_E_ARCH206_MMU) { vcpu->arch.shared->mas0 = sregs->u.e.mas0; vcpu->arch.shared->mas1 = sregs->u.e.mas1; vcpu->arch.shared->mas2 = sregs->u.e.mas2; vcpu->arch.shared->mas7_3 = sregs->u.e.mas7_3; vcpu->arch.shared->mas4 = sregs->u.e.mas4; vcpu->arch.shared->mas6 = sregs->u.e.mas6; } if (!(sregs->u.e.features & KVM_SREGS_E_IVOR)) return 0; if (sregs->u.e.features & KVM_SREGS_E_SPE) { vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = sregs->u.e.ivor_high[0]; vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = sregs->u.e.ivor_high[1]; vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = sregs->u.e.ivor_high[2]; } if (sregs->u.e.features & KVM_SREGS_E_PM) { vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = sregs->u.e.ivor_high[3]; } return kvmppc_set_sregs_ivor(vcpu, sregs); } struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) { struct kvmppc_vcpu_e500 *vcpu_e500; struct kvm_vcpu *vcpu; int err; vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); if (!vcpu_e500) { err = -ENOMEM; goto out; } vcpu = &vcpu_e500->vcpu; err = kvm_vcpu_init(vcpu, kvm, id); if (err) goto free_vcpu; err = kvmppc_e500_tlb_init(vcpu_e500); if (err) goto uninit_vcpu; vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO); if (!vcpu->arch.shared) goto uninit_tlb; return vcpu; uninit_tlb: kvmppc_e500_tlb_uninit(vcpu_e500); uninit_vcpu: kvm_vcpu_uninit(vcpu); free_vcpu: kmem_cache_free(kvm_vcpu_cache, vcpu_e500); out: return ERR_PTR(err); } void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); free_page((unsigned long)vcpu->arch.shared); kvm_vcpu_uninit(vcpu); kvmppc_e500_tlb_uninit(vcpu_e500); kmem_cache_free(kvm_vcpu_cache, vcpu_e500); } static int __init kvmppc_e500_init(void) { int r, i; unsigned long ivor[3]; unsigned long max_ivor = 0; r = kvmppc_core_check_processor_compat(); if (r) return r; r = kvmppc_booke_init(); if (r) return r; /* copy extra E500 exception handlers */ ivor[0] = mfspr(SPRN_IVOR32); ivor[1] = mfspr(SPRN_IVOR33); ivor[2] = mfspr(SPRN_IVOR34); for (i = 0; i < 3; i++) { if (ivor[i] > max_ivor) max_ivor = ivor[i]; memcpy((void *)kvmppc_booke_handlers + ivor[i], kvmppc_handlers_start + (i + 16) * kvmppc_handler_len, kvmppc_handler_len); } flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers + max_ivor + kvmppc_handler_len); return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); } static void __exit kvmppc_e500_exit(void) { kvmppc_booke_exit(); } module_init(kvmppc_e500_init); module_exit(kvmppc_e500_exit);