173196cd3SScott Wood /* 273196cd3SScott Wood * Copyright (C) 2010 Freescale Semiconductor, Inc. All rights reserved. 373196cd3SScott Wood * 473196cd3SScott Wood * Author: Varun Sethi, <varun.sethi@freescale.com> 573196cd3SScott Wood * 673196cd3SScott Wood * Description: 773196cd3SScott Wood * This file is derived from arch/powerpc/kvm/e500.c, 873196cd3SScott Wood * by Yu Liu <yu.liu@freescale.com>. 973196cd3SScott Wood * 1073196cd3SScott Wood * This program is free software; you can redistribute it and/or modify 1173196cd3SScott Wood * it under the terms of the GNU General Public License, version 2, as 1273196cd3SScott Wood * published by the Free Software Foundation. 1373196cd3SScott Wood */ 1473196cd3SScott Wood 1573196cd3SScott Wood #include <linux/kvm_host.h> 1673196cd3SScott Wood #include <linux/slab.h> 1773196cd3SScott Wood #include <linux/err.h> 1873196cd3SScott Wood #include <linux/export.h> 1973196cd3SScott Wood 2073196cd3SScott Wood #include <asm/reg.h> 2173196cd3SScott Wood #include <asm/cputable.h> 2273196cd3SScott Wood #include <asm/tlbflush.h> 2373196cd3SScott Wood #include <asm/kvm_ppc.h> 2473196cd3SScott Wood #include <asm/dbell.h> 2573196cd3SScott Wood 2673196cd3SScott Wood #include "booke.h" 2773196cd3SScott Wood #include "e500.h" 2873196cd3SScott Wood 2973196cd3SScott Wood void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type) 3073196cd3SScott Wood { 3173196cd3SScott Wood enum ppc_dbell dbell_type; 3273196cd3SScott Wood unsigned long tag; 3373196cd3SScott Wood 3473196cd3SScott Wood switch (type) { 3573196cd3SScott Wood case INT_CLASS_NONCRIT: 3673196cd3SScott Wood dbell_type = PPC_G_DBELL; 3773196cd3SScott Wood break; 3873196cd3SScott Wood case INT_CLASS_CRIT: 3973196cd3SScott Wood dbell_type = PPC_G_DBELL_CRIT; 4073196cd3SScott Wood break; 4173196cd3SScott Wood case INT_CLASS_MC: 4273196cd3SScott Wood dbell_type = PPC_G_DBELL_MC; 4373196cd3SScott Wood break; 4473196cd3SScott Wood default: 4573196cd3SScott Wood WARN_ONCE(1, "%s: unknown int type %d\n", __func__, type); 4673196cd3SScott Wood return; 4773196cd3SScott Wood } 4873196cd3SScott Wood 4973196cd3SScott Wood 5073196cd3SScott Wood tag = PPC_DBELL_LPID(vcpu->kvm->arch.lpid) | vcpu->vcpu_id; 5173196cd3SScott Wood mb(); 5273196cd3SScott Wood ppc_msgsnd(dbell_type, 0, tag); 5373196cd3SScott Wood } 5473196cd3SScott Wood 5573196cd3SScott Wood /* gtlbe must not be mapped by more than one host tlb entry */ 5673196cd3SScott Wood void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500, 5773196cd3SScott Wood struct kvm_book3e_206_tlb_entry *gtlbe) 5873196cd3SScott Wood { 5973196cd3SScott Wood unsigned int tid, ts; 6073196cd3SScott Wood u32 val, eaddr, lpid; 6173196cd3SScott Wood unsigned long flags; 6273196cd3SScott Wood 6373196cd3SScott Wood ts = get_tlb_ts(gtlbe); 6473196cd3SScott Wood tid = get_tlb_tid(gtlbe); 6573196cd3SScott Wood lpid = vcpu_e500->vcpu.kvm->arch.lpid; 6673196cd3SScott Wood 6773196cd3SScott Wood /* We search the host TLB to invalidate its shadow TLB entry */ 6873196cd3SScott Wood val = (tid << 16) | ts; 6973196cd3SScott Wood eaddr = get_tlb_eaddr(gtlbe); 7073196cd3SScott Wood 7173196cd3SScott Wood local_irq_save(flags); 7273196cd3SScott Wood 7373196cd3SScott Wood mtspr(SPRN_MAS6, val); 7473196cd3SScott Wood mtspr(SPRN_MAS5, MAS5_SGS | lpid); 7573196cd3SScott Wood 7673196cd3SScott Wood asm volatile("tlbsx 0, %[eaddr]\n" : : [eaddr] "r" (eaddr)); 7773196cd3SScott Wood val = mfspr(SPRN_MAS1); 7873196cd3SScott Wood if (val & MAS1_VALID) { 7973196cd3SScott Wood mtspr(SPRN_MAS1, val & ~MAS1_VALID); 8073196cd3SScott Wood asm volatile("tlbwe"); 8173196cd3SScott Wood } 8273196cd3SScott Wood mtspr(SPRN_MAS5, 0); 8373196cd3SScott Wood /* NOTE: tlbsx also updates mas8, so clear it for host tlbwe */ 8473196cd3SScott Wood mtspr(SPRN_MAS8, 0); 8573196cd3SScott Wood isync(); 8673196cd3SScott Wood 8773196cd3SScott Wood local_irq_restore(flags); 8873196cd3SScott Wood } 8973196cd3SScott Wood 9073196cd3SScott Wood void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500) 9173196cd3SScott Wood { 9273196cd3SScott Wood unsigned long flags; 9373196cd3SScott Wood 9473196cd3SScott Wood local_irq_save(flags); 9573196cd3SScott Wood mtspr(SPRN_MAS5, MAS5_SGS | vcpu_e500->vcpu.kvm->arch.lpid); 9673196cd3SScott Wood asm volatile("tlbilxlpid"); 9773196cd3SScott Wood mtspr(SPRN_MAS5, 0); 9873196cd3SScott Wood local_irq_restore(flags); 9973196cd3SScott Wood } 10073196cd3SScott Wood 10173196cd3SScott Wood void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid) 10273196cd3SScott Wood { 10373196cd3SScott Wood vcpu->arch.pid = pid; 10473196cd3SScott Wood } 10573196cd3SScott Wood 10673196cd3SScott Wood void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr) 10773196cd3SScott Wood { 10873196cd3SScott Wood } 10973196cd3SScott Wood 11073196cd3SScott Wood void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 11173196cd3SScott Wood { 11273196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); 11373196cd3SScott Wood 11473196cd3SScott Wood kvmppc_booke_vcpu_load(vcpu, cpu); 11573196cd3SScott Wood 11673196cd3SScott Wood mtspr(SPRN_LPID, vcpu->kvm->arch.lpid); 11773196cd3SScott Wood mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr); 11873196cd3SScott Wood mtspr(SPRN_GPIR, vcpu->vcpu_id); 11973196cd3SScott Wood mtspr(SPRN_MSRP, vcpu->arch.shadow_msrp); 12073196cd3SScott Wood mtspr(SPRN_EPLC, vcpu->arch.eplc); 12173196cd3SScott Wood mtspr(SPRN_EPSC, vcpu->arch.epsc); 12273196cd3SScott Wood 12373196cd3SScott Wood mtspr(SPRN_GIVPR, vcpu->arch.ivpr); 12473196cd3SScott Wood mtspr(SPRN_GIVOR2, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]); 12573196cd3SScott Wood mtspr(SPRN_GIVOR8, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]); 12673196cd3SScott Wood mtspr(SPRN_GSPRG0, (unsigned long)vcpu->arch.shared->sprg0); 12773196cd3SScott Wood mtspr(SPRN_GSPRG1, (unsigned long)vcpu->arch.shared->sprg1); 12873196cd3SScott Wood mtspr(SPRN_GSPRG2, (unsigned long)vcpu->arch.shared->sprg2); 12973196cd3SScott Wood mtspr(SPRN_GSPRG3, (unsigned long)vcpu->arch.shared->sprg3); 13073196cd3SScott Wood 13173196cd3SScott Wood mtspr(SPRN_GSRR0, vcpu->arch.shared->srr0); 13273196cd3SScott Wood mtspr(SPRN_GSRR1, vcpu->arch.shared->srr1); 13373196cd3SScott Wood 13473196cd3SScott Wood mtspr(SPRN_GEPR, vcpu->arch.epr); 13573196cd3SScott Wood mtspr(SPRN_GDEAR, vcpu->arch.shared->dar); 13673196cd3SScott Wood mtspr(SPRN_GESR, vcpu->arch.shared->esr); 13773196cd3SScott Wood 13873196cd3SScott Wood if (vcpu->arch.oldpir != mfspr(SPRN_PIR)) 13973196cd3SScott Wood kvmppc_e500_tlbil_all(vcpu_e500); 14073196cd3SScott Wood 14173196cd3SScott Wood kvmppc_load_guest_fp(vcpu); 14273196cd3SScott Wood } 14373196cd3SScott Wood 14473196cd3SScott Wood void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 14573196cd3SScott Wood { 14673196cd3SScott Wood vcpu->arch.eplc = mfspr(SPRN_EPLC); 14773196cd3SScott Wood vcpu->arch.epsc = mfspr(SPRN_EPSC); 14873196cd3SScott Wood 14973196cd3SScott Wood vcpu->arch.shared->sprg0 = mfspr(SPRN_GSPRG0); 15073196cd3SScott Wood vcpu->arch.shared->sprg1 = mfspr(SPRN_GSPRG1); 15173196cd3SScott Wood vcpu->arch.shared->sprg2 = mfspr(SPRN_GSPRG2); 15273196cd3SScott Wood vcpu->arch.shared->sprg3 = mfspr(SPRN_GSPRG3); 15373196cd3SScott Wood 15473196cd3SScott Wood vcpu->arch.shared->srr0 = mfspr(SPRN_GSRR0); 15573196cd3SScott Wood vcpu->arch.shared->srr1 = mfspr(SPRN_GSRR1); 15673196cd3SScott Wood 15773196cd3SScott Wood vcpu->arch.epr = mfspr(SPRN_GEPR); 15873196cd3SScott Wood vcpu->arch.shared->dar = mfspr(SPRN_GDEAR); 15973196cd3SScott Wood vcpu->arch.shared->esr = mfspr(SPRN_GESR); 16073196cd3SScott Wood 16173196cd3SScott Wood vcpu->arch.oldpir = mfspr(SPRN_PIR); 16273196cd3SScott Wood 16373196cd3SScott Wood kvmppc_booke_vcpu_put(vcpu); 16473196cd3SScott Wood } 16573196cd3SScott Wood 16673196cd3SScott Wood int kvmppc_core_check_processor_compat(void) 16773196cd3SScott Wood { 16873196cd3SScott Wood int r; 16973196cd3SScott Wood 17073196cd3SScott Wood if (strcmp(cur_cpu_spec->cpu_name, "e500mc") == 0) 17173196cd3SScott Wood r = 0; 17273196cd3SScott Wood else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0) 17373196cd3SScott Wood r = 0; 17473196cd3SScott Wood else 17573196cd3SScott Wood r = -ENOTSUPP; 17673196cd3SScott Wood 17773196cd3SScott Wood return r; 17873196cd3SScott Wood } 17973196cd3SScott Wood 18073196cd3SScott Wood int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu) 18173196cd3SScott Wood { 18273196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); 18373196cd3SScott Wood 18473196cd3SScott Wood vcpu->arch.shadow_epcr = SPRN_EPCR_DSIGS | SPRN_EPCR_DGTMI | \ 18573196cd3SScott Wood SPRN_EPCR_DUVD; 18673196cd3SScott Wood vcpu->arch.shadow_msrp = MSRP_UCLEP | MSRP_DEP | MSRP_PMMP; 18773196cd3SScott Wood vcpu->arch.eplc = EPC_EGS | (vcpu->kvm->arch.lpid << EPC_ELPID_SHIFT); 18873196cd3SScott Wood vcpu->arch.epsc = vcpu->arch.eplc; 18973196cd3SScott Wood 19073196cd3SScott Wood vcpu->arch.pvr = mfspr(SPRN_PVR); 19173196cd3SScott Wood vcpu_e500->svr = mfspr(SPRN_SVR); 19273196cd3SScott Wood 19373196cd3SScott Wood vcpu->arch.cpu_type = KVM_CPU_E500MC; 19473196cd3SScott Wood 19573196cd3SScott Wood return 0; 19673196cd3SScott Wood } 19773196cd3SScott Wood 19873196cd3SScott Wood void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) 19973196cd3SScott Wood { 20073196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); 20173196cd3SScott Wood 20273196cd3SScott Wood sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_PM | 20373196cd3SScott Wood KVM_SREGS_E_PC; 20473196cd3SScott Wood sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL; 20573196cd3SScott Wood 20673196cd3SScott Wood sregs->u.e.impl.fsl.features = 0; 20773196cd3SScott Wood sregs->u.e.impl.fsl.svr = vcpu_e500->svr; 20873196cd3SScott Wood sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0; 20973196cd3SScott Wood sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar; 21073196cd3SScott Wood 21173196cd3SScott Wood kvmppc_get_sregs_e500_tlb(vcpu, sregs); 21273196cd3SScott Wood 21373196cd3SScott Wood sregs->u.e.ivor_high[3] = 21473196cd3SScott Wood vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR]; 21573196cd3SScott Wood sregs->u.e.ivor_high[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL]; 21673196cd3SScott Wood sregs->u.e.ivor_high[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT]; 21773196cd3SScott Wood 21873196cd3SScott Wood kvmppc_get_sregs_ivor(vcpu, sregs); 21973196cd3SScott Wood } 22073196cd3SScott Wood 22173196cd3SScott Wood int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) 22273196cd3SScott Wood { 22373196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); 22473196cd3SScott Wood int ret; 22573196cd3SScott Wood 22673196cd3SScott Wood if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) { 22773196cd3SScott Wood vcpu_e500->svr = sregs->u.e.impl.fsl.svr; 22873196cd3SScott Wood vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0; 22973196cd3SScott Wood vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar; 23073196cd3SScott Wood } 23173196cd3SScott Wood 23273196cd3SScott Wood ret = kvmppc_set_sregs_e500_tlb(vcpu, sregs); 23373196cd3SScott Wood if (ret < 0) 23473196cd3SScott Wood return ret; 23573196cd3SScott Wood 23673196cd3SScott Wood if (!(sregs->u.e.features & KVM_SREGS_E_IVOR)) 23773196cd3SScott Wood return 0; 23873196cd3SScott Wood 23973196cd3SScott Wood if (sregs->u.e.features & KVM_SREGS_E_PM) { 24073196cd3SScott Wood vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = 24173196cd3SScott Wood sregs->u.e.ivor_high[3]; 24273196cd3SScott Wood } 24373196cd3SScott Wood 24473196cd3SScott Wood if (sregs->u.e.features & KVM_SREGS_E_PC) { 24573196cd3SScott Wood vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] = 24673196cd3SScott Wood sregs->u.e.ivor_high[4]; 24773196cd3SScott Wood vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] = 24873196cd3SScott Wood sregs->u.e.ivor_high[5]; 24973196cd3SScott Wood } 25073196cd3SScott Wood 25173196cd3SScott Wood return kvmppc_set_sregs_ivor(vcpu, sregs); 25273196cd3SScott Wood } 25373196cd3SScott Wood 25473196cd3SScott Wood struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 25573196cd3SScott Wood { 25673196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500; 25773196cd3SScott Wood struct kvm_vcpu *vcpu; 25873196cd3SScott Wood int err; 25973196cd3SScott Wood 26073196cd3SScott Wood vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); 26173196cd3SScott Wood if (!vcpu_e500) { 26273196cd3SScott Wood err = -ENOMEM; 26373196cd3SScott Wood goto out; 26473196cd3SScott Wood } 26573196cd3SScott Wood vcpu = &vcpu_e500->vcpu; 26673196cd3SScott Wood 26773196cd3SScott Wood /* Invalid PIR value -- this LPID dosn't have valid state on any cpu */ 26873196cd3SScott Wood vcpu->arch.oldpir = 0xffffffff; 26973196cd3SScott Wood 27073196cd3SScott Wood err = kvm_vcpu_init(vcpu, kvm, id); 27173196cd3SScott Wood if (err) 27273196cd3SScott Wood goto free_vcpu; 27373196cd3SScott Wood 27473196cd3SScott Wood err = kvmppc_e500_tlb_init(vcpu_e500); 27573196cd3SScott Wood if (err) 27673196cd3SScott Wood goto uninit_vcpu; 27773196cd3SScott Wood 27873196cd3SScott Wood vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO); 27973196cd3SScott Wood if (!vcpu->arch.shared) 28073196cd3SScott Wood goto uninit_tlb; 28173196cd3SScott Wood 28273196cd3SScott Wood return vcpu; 28373196cd3SScott Wood 28473196cd3SScott Wood uninit_tlb: 28573196cd3SScott Wood kvmppc_e500_tlb_uninit(vcpu_e500); 28673196cd3SScott Wood uninit_vcpu: 28773196cd3SScott Wood kvm_vcpu_uninit(vcpu); 28873196cd3SScott Wood 28973196cd3SScott Wood free_vcpu: 29073196cd3SScott Wood kmem_cache_free(kvm_vcpu_cache, vcpu_e500); 29173196cd3SScott Wood out: 29273196cd3SScott Wood return ERR_PTR(err); 29373196cd3SScott Wood } 29473196cd3SScott Wood 29573196cd3SScott Wood void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 29673196cd3SScott Wood { 29773196cd3SScott Wood struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); 29873196cd3SScott Wood 29973196cd3SScott Wood free_page((unsigned long)vcpu->arch.shared); 30073196cd3SScott Wood kvmppc_e500_tlb_uninit(vcpu_e500); 30173196cd3SScott Wood kvm_vcpu_uninit(vcpu); 30273196cd3SScott Wood kmem_cache_free(kvm_vcpu_cache, vcpu_e500); 30373196cd3SScott Wood } 30473196cd3SScott Wood 30573196cd3SScott Wood int kvmppc_core_init_vm(struct kvm *kvm) 30673196cd3SScott Wood { 30773196cd3SScott Wood int lpid; 30873196cd3SScott Wood 30973196cd3SScott Wood lpid = kvmppc_alloc_lpid(); 31073196cd3SScott Wood if (lpid < 0) 31173196cd3SScott Wood return lpid; 31273196cd3SScott Wood 31373196cd3SScott Wood kvm->arch.lpid = lpid; 31473196cd3SScott Wood return 0; 31573196cd3SScott Wood } 31673196cd3SScott Wood 31773196cd3SScott Wood void kvmppc_core_destroy_vm(struct kvm *kvm) 31873196cd3SScott Wood { 31973196cd3SScott Wood kvmppc_free_lpid(kvm->arch.lpid); 32073196cd3SScott Wood } 32173196cd3SScott Wood 32273196cd3SScott Wood static int __init kvmppc_e500mc_init(void) 32373196cd3SScott Wood { 32473196cd3SScott Wood int r; 32573196cd3SScott Wood 32673196cd3SScott Wood r = kvmppc_booke_init(); 32773196cd3SScott Wood if (r) 32873196cd3SScott Wood return r; 32973196cd3SScott Wood 33073196cd3SScott Wood kvmppc_init_lpid(64); 33173196cd3SScott Wood kvmppc_claim_lpid(0); /* host */ 33273196cd3SScott Wood 33373196cd3SScott Wood return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); 33473196cd3SScott Wood } 33573196cd3SScott Wood 33673196cd3SScott Wood static void __exit kvmppc_e500mc_exit(void) 33773196cd3SScott Wood { 33873196cd3SScott Wood kvmppc_booke_exit(); 33973196cd3SScott Wood } 34073196cd3SScott Wood 34173196cd3SScott Wood module_init(kvmppc_e500mc_init); 34273196cd3SScott Wood module_exit(kvmppc_e500mc_exit); 343