2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2008
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #include <linux/kvm_host.h>
21 #include <linux/err.h>
24 #include <asm/cputable.h>
25 #include <asm/tlbflush.h>
26 #include <asm/kvm_44x.h>
27 #include <asm/kvm_ppc.h>
31 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
33 kvmppc_44x_tlb_load(vcpu);
36 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
38 kvmppc_44x_tlb_put(vcpu);
41 int kvmppc_core_check_processor_compat(void)
45 if (strcmp(cur_cpu_spec->platform, "ppc440") == 0)
53 int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
55 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
56 struct kvmppc_44x_tlbe *tlbe = &vcpu_44x->guest_tlb[0];
60 tlbe->word0 = PPC44x_TLB_16M | PPC44x_TLB_VALID;
62 tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR;
66 tlbe->word0 = 0xef600000 | PPC44x_TLB_4K | PPC44x_TLB_VALID;
67 tlbe->word1 = 0xef600000;
68 tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR
69 | PPC44x_TLB_I | PPC44x_TLB_G;
71 /* Since the guest can directly access the timebase, it must know the
72 * real timebase frequency. Accordingly, it must see the state of
74 vcpu->arch.ccr1 = mfspr(SPRN_CCR1);
76 for (i = 0; i < ARRAY_SIZE(vcpu_44x->shadow_refs); i++)
77 vcpu_44x->shadow_refs[i].gtlb_index = -1;
82 /* 'linear_address' is actually an encoding of AS|PID|EADDR . */
83 int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
84 struct kvm_translation *tr)
91 eaddr = tr->linear_address;
92 pid = (tr->linear_address >> 32) & 0xff;
93 as = (tr->linear_address >> 40) & 0x1;
95 index = kvmppc_44x_tlb_index(vcpu, eaddr, pid, as);
101 tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
102 /* XXX what does "writeable" and "usermode" even mean? */
108 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
110 struct kvmppc_vcpu_44x *vcpu_44x;
111 struct kvm_vcpu *vcpu;
114 vcpu_44x = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
120 vcpu = &vcpu_44x->vcpu;
121 err = kvm_vcpu_init(vcpu, kvm, id);
128 kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
133 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
135 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
137 kvm_vcpu_uninit(vcpu);
138 kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
141 static int kvmppc_44x_init(void)
145 r = kvmppc_booke_init();
149 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_44x), THIS_MODULE);
152 static void kvmppc_44x_exit(void)
157 module_init(kvmppc_44x_init);
158 module_exit(kvmppc_44x_exit);