2 * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
4 * Author: Yu Liu, <yu.liu@freescale.com>
7 * This file is derived from arch/powerpc/kvm/44x.c,
8 * by Hollis Blanchard <hollisb@us.ibm.com>.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License, version 2, as
12 * published by the Free Software Foundation.
15 #include <linux/kvm_host.h>
16 #include <linux/slab.h>
17 #include <linux/err.h>
18 #include <linux/export.h>
21 #include <asm/cputable.h>
22 #include <asm/tlbflush.h>
23 #include <asm/kvm_e500.h>
24 #include <asm/kvm_ppc.h>
29 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
33 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
37 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
39 kvmppc_e500_tlb_load(vcpu, cpu);
42 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
44 kvmppc_e500_tlb_put(vcpu);
47 if (vcpu->arch.shadow_msr & MSR_SPE)
48 kvmppc_vcpu_disable_spe(vcpu);
52 int kvmppc_core_check_processor_compat(void)
56 if (strcmp(cur_cpu_spec->cpu_name, "e500v2") == 0)
64 int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
66 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
68 kvmppc_e500_tlb_setup(vcpu_e500);
71 vcpu->arch.pvr = mfspr(SPRN_PVR);
72 vcpu_e500->svr = mfspr(SPRN_SVR);
74 vcpu->arch.cpu_type = KVM_CPU_E500V2;
79 /* 'linear_address' is actually an encoding of AS|PID|EADDR . */
80 int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
81 struct kvm_translation *tr)
88 eaddr = tr->linear_address;
89 pid = (tr->linear_address >> 32) & 0xff;
90 as = (tr->linear_address >> 40) & 0x1;
92 index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as);
98 tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
99 /* XXX what does "writeable" and "usermode" even mean? */
105 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
107 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
109 sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_SPE |
111 sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
113 sregs->u.e.impl.fsl.features = 0;
114 sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
115 sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
116 sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
118 sregs->u.e.mas0 = vcpu->arch.shared->mas0;
119 sregs->u.e.mas1 = vcpu->arch.shared->mas1;
120 sregs->u.e.mas2 = vcpu->arch.shared->mas2;
121 sregs->u.e.mas7_3 = vcpu->arch.shared->mas7_3;
122 sregs->u.e.mas4 = vcpu->arch.shared->mas4;
123 sregs->u.e.mas6 = vcpu->arch.shared->mas6;
125 sregs->u.e.mmucfg = mfspr(SPRN_MMUCFG);
126 sregs->u.e.tlbcfg[0] = vcpu_e500->tlb0cfg;
127 sregs->u.e.tlbcfg[1] = vcpu_e500->tlb1cfg;
128 sregs->u.e.tlbcfg[2] = 0;
129 sregs->u.e.tlbcfg[3] = 0;
131 sregs->u.e.ivor_high[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
132 sregs->u.e.ivor_high[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
133 sregs->u.e.ivor_high[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
134 sregs->u.e.ivor_high[3] =
135 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
137 kvmppc_get_sregs_ivor(vcpu, sregs);
140 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
142 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
144 if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
145 vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
146 vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
147 vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
150 if (sregs->u.e.features & KVM_SREGS_E_ARCH206_MMU) {
151 vcpu->arch.shared->mas0 = sregs->u.e.mas0;
152 vcpu->arch.shared->mas1 = sregs->u.e.mas1;
153 vcpu->arch.shared->mas2 = sregs->u.e.mas2;
154 vcpu->arch.shared->mas7_3 = sregs->u.e.mas7_3;
155 vcpu->arch.shared->mas4 = sregs->u.e.mas4;
156 vcpu->arch.shared->mas6 = sregs->u.e.mas6;
159 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
162 if (sregs->u.e.features & KVM_SREGS_E_SPE) {
163 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] =
164 sregs->u.e.ivor_high[0];
165 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] =
166 sregs->u.e.ivor_high[1];
167 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] =
168 sregs->u.e.ivor_high[2];
171 if (sregs->u.e.features & KVM_SREGS_E_PM) {
172 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
173 sregs->u.e.ivor_high[3];
176 return kvmppc_set_sregs_ivor(vcpu, sregs);
179 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
181 struct kvmppc_vcpu_e500 *vcpu_e500;
182 struct kvm_vcpu *vcpu;
185 vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
191 vcpu = &vcpu_e500->vcpu;
192 err = kvm_vcpu_init(vcpu, kvm, id);
196 err = kvmppc_e500_tlb_init(vcpu_e500);
200 vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO);
201 if (!vcpu->arch.shared)
207 kvmppc_e500_tlb_uninit(vcpu_e500);
209 kvm_vcpu_uninit(vcpu);
211 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
216 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
218 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
220 free_page((unsigned long)vcpu->arch.shared);
221 kvm_vcpu_uninit(vcpu);
222 kvmppc_e500_tlb_uninit(vcpu_e500);
223 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
226 static int __init kvmppc_e500_init(void)
229 unsigned long ivor[3];
230 unsigned long max_ivor = 0;
232 r = kvmppc_core_check_processor_compat();
236 r = kvmppc_booke_init();
240 /* copy extra E500 exception handlers */
241 ivor[0] = mfspr(SPRN_IVOR32);
242 ivor[1] = mfspr(SPRN_IVOR33);
243 ivor[2] = mfspr(SPRN_IVOR34);
244 for (i = 0; i < 3; i++) {
245 if (ivor[i] > max_ivor)
248 memcpy((void *)kvmppc_booke_handlers + ivor[i],
249 kvmppc_handlers_start + (i + 16) * kvmppc_handler_len,
252 flush_icache_range(kvmppc_booke_handlers,
253 kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
255 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
258 static void __exit kvmppc_e500_exit(void)
263 module_init(kvmppc_e500_init);
264 module_exit(kvmppc_e500_exit);