git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| bc8080cb HB |
1 | /* |
| 2 | * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * Author: Yu Liu, <yu.liu@freescale.com> | |
| 5 | * | |
| 6 | * Description: | |
| 7 | * This file is derived from arch/powerpc/kvm/44x.c, | |
| 8 | * by Hollis Blanchard <hollisb@us.ibm.com>. | |
| 9 | * | |
| 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. | |
| 13 | */ | |
| 14 | ||
| 15 | #include <linux/kvm_host.h> | |
| 16 | #include <linux/err.h> | |
| 17 | ||
| 18 | #include <asm/reg.h> | |
| 19 | #include <asm/cputable.h> | |
| 20 | #include <asm/tlbflush.h> | |
| 21 | #include <asm/kvm_e500.h> | |
| 22 | #include <asm/kvm_ppc.h> | |
| 23 | ||
| 24 | #include "e500_tlb.h" | |
| 25 | ||
| 26 | void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu) | |
| 27 | { | |
| 28 | } | |
| 29 | ||
| 30 | void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu) | |
| 31 | { | |
| 32 | } | |
| 33 | ||
| 34 | void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
| 35 | { | |
| 36 | kvmppc_e500_tlb_load(vcpu, cpu); | |
| 37 | } | |
| 38 | ||
| 39 | void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) | |
| 40 | { | |
| 41 | kvmppc_e500_tlb_put(vcpu); | |
| 42 | } | |
| 43 | ||
| 44 | int kvmppc_core_check_processor_compat(void) | |
| 45 | { | |
| 46 | int r; | |
| 47 | ||
| 48 | if (strcmp(cur_cpu_spec->cpu_name, "e500v2") == 0) | |
| 49 | r = 0; | |
| 50 | else | |
| 51 | r = -ENOTSUPP; | |
| 52 | ||
| 53 | return r; | |
| 54 | } | |
| 55 | ||
| 56 | int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu) | |
| 57 | { | |
| 58 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
| 59 | ||
| 60 | kvmppc_e500_tlb_setup(vcpu_e500); | |
| 61 | ||
| 62 | /* Use the same core vertion as host's */ | |
| 63 | vcpu->arch.pvr = mfspr(SPRN_PVR); | |
| 64 | ||
| 65 | return 0; | |
| 66 | } | |
| 67 | ||
| 68 | /* 'linear_address' is actually an encoding of AS|PID|EADDR . */ | |
| 69 | int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, | |
| 70 | struct kvm_translation *tr) | |
| 71 | { | |
| 72 | int index; | |
| 73 | gva_t eaddr; | |
| 74 | u8 pid; | |
| 75 | u8 as; | |
| 76 | ||
| 77 | eaddr = tr->linear_address; | |
| 78 | pid = (tr->linear_address >> 32) & 0xff; | |
| 79 | as = (tr->linear_address >> 40) & 0x1; | |
| 80 | ||
| 81 | index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as); | |
| 82 | if (index < 0) { | |
| 83 | tr->valid = 0; | |
| 84 | return 0; | |
| 85 | } | |
| 86 | ||
| 87 | tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr); | |
| 88 | /* XXX what does "writeable" and "usermode" even mean? */ | |
| 89 | tr->valid = 1; | |
| 90 | ||
| 91 | return 0; | |
| 92 | } | |
| 93 | ||
| 94 | struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) | |
| 95 | { | |
| 96 | struct kvmppc_vcpu_e500 *vcpu_e500; | |
| 97 | struct kvm_vcpu *vcpu; | |
| 98 | int err; | |
| 99 | ||
| 100 | vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); | |
| 101 | if (!vcpu_e500) { | |
| 102 | err = -ENOMEM; | |
| 103 | goto out; | |
| 104 | } | |
| 105 | ||
| 106 | vcpu = &vcpu_e500->vcpu; | |
| 107 | err = kvm_vcpu_init(vcpu, kvm, id); | |
| 108 | if (err) | |
| 109 | goto free_vcpu; | |
| 110 | ||
| 111 | err = kvmppc_e500_tlb_init(vcpu_e500); | |
| 112 | if (err) | |
| 113 | goto uninit_vcpu; | |
| 114 | ||
| 115 | return vcpu; | |
| 116 | ||
| 117 | uninit_vcpu: | |
| 118 | kvm_vcpu_uninit(vcpu); | |
| 119 | free_vcpu: | |
| 120 | kmem_cache_free(kvm_vcpu_cache, vcpu_e500); | |
| 121 | out: | |
| 122 | return ERR_PTR(err); | |
| 123 | } | |
| 124 | ||
| 125 | void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) | |
| 126 | { | |
| 127 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
| 128 | ||
| 129 | kvmppc_e500_tlb_uninit(vcpu_e500); | |
| 130 | kvm_vcpu_uninit(vcpu); | |
| 131 | kmem_cache_free(kvm_vcpu_cache, vcpu_e500); | |
| 132 | } | |
| 133 | ||
| 134 | static int kvmppc_e500_init(void) | |
| 135 | { | |
| 136 | int r; | |
| 137 | ||
| 138 | r = kvmppc_booke_init(); | |
| 139 | if (r) | |
| 140 | return r; | |
| 141 | ||
| 142 | return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), THIS_MODULE); | |
| 143 | } | |
| 144 | ||
| 145 | static void kvmppc_e500_exit(void) | |
| 146 | { | |
| 147 | kvmppc_booke_exit(); | |
| 148 | } | |
| 149 | ||
| 150 | module_init(kvmppc_e500_init); | |
| 151 | module_exit(kvmppc_e500_exit); |