2 * Copyright (C) 2008 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>
20 #include <asm/cputable.h>
21 #include <asm/tlbflush.h>
22 #include <asm/kvm_e500.h>
23 #include <asm/kvm_ppc.h>
28 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
32 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
36 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
38 kvmppc_e500_tlb_load(vcpu, cpu);
41 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
43 kvmppc_e500_tlb_put(vcpu);
46 int kvmppc_core_check_processor_compat(void)
50 if (strcmp(cur_cpu_spec->cpu_name, "e500v2") == 0)
58 int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
60 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
62 kvmppc_e500_tlb_setup(vcpu_e500);
65 vcpu->arch.pvr = mfspr(SPRN_PVR);
67 /* Since booke kvm only support one core, update all vcpus' PIR to 0 */
73 /* 'linear_address' is actually an encoding of AS|PID|EADDR . */
74 int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
75 struct kvm_translation *tr)
82 eaddr = tr->linear_address;
83 pid = (tr->linear_address >> 32) & 0xff;
84 as = (tr->linear_address >> 40) & 0x1;
86 index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as);
92 tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
93 /* XXX what does "writeable" and "usermode" even mean? */
99 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
101 struct kvmppc_vcpu_e500 *vcpu_e500;
102 struct kvm_vcpu *vcpu;
105 vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
111 vcpu = &vcpu_e500->vcpu;
112 err = kvm_vcpu_init(vcpu, kvm, id);
116 err = kvmppc_e500_tlb_init(vcpu_e500);
120 vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO);
121 if (!vcpu->arch.shared)
127 kvmppc_e500_tlb_uninit(vcpu_e500);
129 kvm_vcpu_uninit(vcpu);
131 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
136 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
138 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
140 free_page((unsigned long)vcpu->arch.shared);
141 kvmppc_e500_tlb_uninit(vcpu_e500);
142 kvm_vcpu_uninit(vcpu);
143 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
146 static int __init kvmppc_e500_init(void)
149 unsigned long ivor[3];
150 unsigned long max_ivor = 0;
152 r = kvmppc_booke_init();
156 /* copy extra E500 exception handlers */
157 ivor[0] = mfspr(SPRN_IVOR32);
158 ivor[1] = mfspr(SPRN_IVOR33);
159 ivor[2] = mfspr(SPRN_IVOR34);
160 for (i = 0; i < 3; i++) {
161 if (ivor[i] > max_ivor)
164 memcpy((void *)kvmppc_booke_handlers + ivor[i],
165 kvmppc_handlers_start + (i + 16) * kvmppc_handler_len,
168 flush_icache_range(kvmppc_booke_handlers,
169 kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
171 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
174 static void __exit kvmppc_e500_exit(void)
179 module_init(kvmppc_e500_init);
180 module_exit(kvmppc_e500_exit);