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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | /* * 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.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 <linux/kvm_host.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/export.h> #include <asm/reg.h> #include <asm/cputable.h> #include <asm/tlbflush.h> #include <asm/kvm_e500.h> #include <asm/kvm_ppc.h> #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_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 } 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); /* Since booke kvm only support one core, update all vcpus' PIR to 0 */ vcpu->vcpu_id = 0; 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_e500->mas0; sregs->u.e.mas1 = vcpu_e500->mas1; sregs->u.e.mas2 = vcpu_e500->mas2; sregs->u.e.mas7_3 = ((u64)vcpu_e500->mas7 << 32) | vcpu_e500->mas3; sregs->u.e.mas4 = vcpu_e500->mas4; sregs->u.e.mas6 = vcpu_e500->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_e500->mas0 = sregs->u.e.mas0; vcpu_e500->mas1 = sregs->u.e.mas1; vcpu_e500->mas2 = sregs->u.e.mas2; vcpu_e500->mas7 = sregs->u.e.mas7_3 >> 32; vcpu_e500->mas3 = (u32)sregs->u.e.mas7_3; vcpu_e500->mas4 = sregs->u.e.mas4; vcpu_e500->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_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); |