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/err.h>
19 #include <asm/cputable.h>
20 #include <asm/tlbflush.h>
21 #include <asm/kvm_e500.h>
22 #include <asm/kvm_ppc.h>
27 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
31 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
35 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
37 kvmppc_e500_tlb_load(vcpu, cpu);
40 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
42 kvmppc_e500_tlb_put(vcpu);
45 int kvmppc_core_check_processor_compat(void)
49 if (strcmp(cur_cpu_spec->cpu_name, "e500v2") == 0)
57 int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
59 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
61 kvmppc_e500_tlb_setup(vcpu_e500);
63 /* Use the same core vertion as host's */
64 vcpu->arch.pvr = mfspr(SPRN_PVR);
69 /* 'linear_address' is actually an encoding of AS|PID|EADDR . */
70 int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
71 struct kvm_translation *tr)
78 eaddr = tr->linear_address;
79 pid = (tr->linear_address >> 32) & 0xff;
80 as = (tr->linear_address >> 40) & 0x1;
82 index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as);
88 tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
89 /* XXX what does "writeable" and "usermode" even mean? */
95 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
97 struct kvmppc_vcpu_e500 *vcpu_e500;
98 struct kvm_vcpu *vcpu;
101 vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
107 vcpu = &vcpu_e500->vcpu;
108 err = kvm_vcpu_init(vcpu, kvm, id);
112 err = kvmppc_e500_tlb_init(vcpu_e500);
119 kvm_vcpu_uninit(vcpu);
121 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
126 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
128 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
130 kvmppc_e500_tlb_uninit(vcpu_e500);
131 kvm_vcpu_uninit(vcpu);
132 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
135 static int kvmppc_e500_init(void)
138 unsigned long ivor[3];
139 unsigned long max_ivor = 0;
141 r = kvmppc_booke_init();
145 /* copy extra E500 exception handlers */
146 ivor[0] = mfspr(SPRN_IVOR32);
147 ivor[1] = mfspr(SPRN_IVOR33);
148 ivor[2] = mfspr(SPRN_IVOR34);
149 for (i = 0; i < 3; i++) {
150 if (ivor[i] > max_ivor)
153 memcpy((void *)kvmppc_booke_handlers + ivor[i],
154 kvmppc_handlers_start + (i + 16) * kvmppc_handler_len,
157 flush_icache_range(kvmppc_booke_handlers,
158 kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
160 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), THIS_MODULE);
163 static void kvmppc_e500_exit(void)
168 module_init(kvmppc_e500_init);
169 module_exit(kvmppc_e500_exit);