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/slab.h>
22 #include <linux/err.h>
23 #include <linux/export.h>
26 #include <asm/cputable.h>
27 #include <asm/tlbflush.h>
28 #include <asm/kvm_44x.h>
29 #include <asm/kvm_ppc.h>
34 static void kvmppc_core_vcpu_load_44x(struct kvm_vcpu *vcpu, int cpu)
36 kvmppc_booke_vcpu_load(vcpu, cpu);
37 kvmppc_44x_tlb_load(vcpu);
40 static void kvmppc_core_vcpu_put_44x(struct kvm_vcpu *vcpu)
42 kvmppc_44x_tlb_put(vcpu);
43 kvmppc_booke_vcpu_put(vcpu);
46 int kvmppc_core_check_processor_compat(void)
50 if (strncmp(cur_cpu_spec->platform, "ppc440", 6) == 0)
58 int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
60 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
61 struct kvmppc_44x_tlbe *tlbe = &vcpu_44x->guest_tlb[0];
65 tlbe->word0 = PPC44x_TLB_16M | PPC44x_TLB_VALID;
67 tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR;
71 tlbe->word0 = 0xef600000 | PPC44x_TLB_4K | PPC44x_TLB_VALID;
72 tlbe->word1 = 0xef600000;
73 tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR
74 | PPC44x_TLB_I | PPC44x_TLB_G;
76 /* Since the guest can directly access the timebase, it must know the
77 * real timebase frequency. Accordingly, it must see the state of
79 /* XXX CCR1 doesn't exist on all 440 SoCs. */
80 vcpu->arch.ccr1 = mfspr(SPRN_CCR1);
82 for (i = 0; i < ARRAY_SIZE(vcpu_44x->shadow_refs); i++)
83 vcpu_44x->shadow_refs[i].gtlb_index = -1;
85 vcpu->arch.cpu_type = KVM_CPU_440;
86 vcpu->arch.pvr = mfspr(SPRN_PVR);
91 /* 'linear_address' is actually an encoding of AS|PID|EADDR . */
92 int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
93 struct kvm_translation *tr)
100 eaddr = tr->linear_address;
101 pid = (tr->linear_address >> 32) & 0xff;
102 as = (tr->linear_address >> 40) & 0x1;
104 index = kvmppc_44x_tlb_index(vcpu, eaddr, pid, as);
110 tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
111 /* XXX what does "writeable" and "usermode" even mean? */
117 static int kvmppc_core_get_sregs_44x(struct kvm_vcpu *vcpu,
118 struct kvm_sregs *sregs)
120 return kvmppc_get_sregs_ivor(vcpu, sregs);
123 static int kvmppc_core_set_sregs_44x(struct kvm_vcpu *vcpu,
124 struct kvm_sregs *sregs)
126 return kvmppc_set_sregs_ivor(vcpu, sregs);
129 static int kvmppc_get_one_reg_44x(struct kvm_vcpu *vcpu, u64 id,
130 union kvmppc_one_reg *val)
135 static int kvmppc_set_one_reg_44x(struct kvm_vcpu *vcpu, u64 id,
136 union kvmppc_one_reg *val)
141 static struct kvm_vcpu *kvmppc_core_vcpu_create_44x(struct kvm *kvm,
144 struct kvmppc_vcpu_44x *vcpu_44x;
145 struct kvm_vcpu *vcpu;
148 vcpu_44x = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
154 vcpu = &vcpu_44x->vcpu;
155 err = kvm_vcpu_init(vcpu, kvm, id);
159 vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO);
160 if (!vcpu->arch.shared)
166 kvm_vcpu_uninit(vcpu);
168 kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
173 static void kvmppc_core_vcpu_free_44x(struct kvm_vcpu *vcpu)
175 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
177 free_page((unsigned long)vcpu->arch.shared);
178 kvm_vcpu_uninit(vcpu);
179 kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
182 static int kvmppc_core_init_vm_44x(struct kvm *kvm)
187 static void kvmppc_core_destroy_vm_44x(struct kvm *kvm)
191 static struct kvmppc_ops kvm_ops_44x = {
192 .get_sregs = kvmppc_core_get_sregs_44x,
193 .set_sregs = kvmppc_core_set_sregs_44x,
194 .get_one_reg = kvmppc_get_one_reg_44x,
195 .set_one_reg = kvmppc_set_one_reg_44x,
196 .vcpu_load = kvmppc_core_vcpu_load_44x,
197 .vcpu_put = kvmppc_core_vcpu_put_44x,
198 .vcpu_create = kvmppc_core_vcpu_create_44x,
199 .vcpu_free = kvmppc_core_vcpu_free_44x,
200 .mmu_destroy = kvmppc_mmu_destroy_44x,
201 .init_vm = kvmppc_core_init_vm_44x,
202 .destroy_vm = kvmppc_core_destroy_vm_44x,
203 .emulate_op = kvmppc_core_emulate_op_44x,
204 .emulate_mtspr = kvmppc_core_emulate_mtspr_44x,
205 .emulate_mfspr = kvmppc_core_emulate_mfspr_44x,
208 static int __init kvmppc_44x_init(void)
212 r = kvmppc_booke_init();
216 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_44x), 0, THIS_MODULE);
219 kvm_ops_44x.owner = THIS_MODULE;
220 kvmppc_pr_ops = &kvm_ops_44x;
226 static void __exit kvmppc_44x_exit(void)
228 kvmppc_pr_ops = NULL;
232 module_init(kvmppc_44x_init);
233 module_exit(kvmppc_44x_exit);