160 lines
3.6 KiB
C
160 lines
3.6 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* Copyright IBM Corp. 2008
|
|
*
|
|
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
|
|
*/
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/err.h>
|
|
|
|
#include <asm/reg.h>
|
|
#include <asm/cputable.h>
|
|
#include <asm/tlbflush.h>
|
|
#include <asm/kvm_44x.h>
|
|
#include <asm/kvm_ppc.h>
|
|
|
|
#include "44x_tlb.h"
|
|
|
|
void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
|
|
{
|
|
kvmppc_44x_tlb_load(vcpu);
|
|
}
|
|
|
|
void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
|
|
{
|
|
kvmppc_44x_tlb_put(vcpu);
|
|
}
|
|
|
|
int kvmppc_core_check_processor_compat(void)
|
|
{
|
|
int r;
|
|
|
|
if (strcmp(cur_cpu_spec->platform, "ppc440") == 0)
|
|
r = 0;
|
|
else
|
|
r = -ENOTSUPP;
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
|
|
struct kvmppc_44x_tlbe *tlbe = &vcpu_44x->guest_tlb[0];
|
|
int i;
|
|
|
|
tlbe->tid = 0;
|
|
tlbe->word0 = PPC44x_TLB_16M | PPC44x_TLB_VALID;
|
|
tlbe->word1 = 0;
|
|
tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR;
|
|
|
|
tlbe++;
|
|
tlbe->tid = 0;
|
|
tlbe->word0 = 0xef600000 | PPC44x_TLB_4K | PPC44x_TLB_VALID;
|
|
tlbe->word1 = 0xef600000;
|
|
tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR
|
|
| PPC44x_TLB_I | PPC44x_TLB_G;
|
|
|
|
/* Since the guest can directly access the timebase, it must know the
|
|
* real timebase frequency. Accordingly, it must see the state of
|
|
* CCR1[TCS]. */
|
|
vcpu->arch.ccr1 = mfspr(SPRN_CCR1);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(vcpu_44x->shadow_refs); i++)
|
|
vcpu_44x->shadow_refs[i].gtlb_index = -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* 'linear_address' is actually an encoding of AS|PID|EADDR . */
|
|
int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
|
|
struct kvm_translation *tr)
|
|
{
|
|
int index;
|
|
gva_t eaddr;
|
|
u8 pid;
|
|
u8 as;
|
|
|
|
eaddr = tr->linear_address;
|
|
pid = (tr->linear_address >> 32) & 0xff;
|
|
as = (tr->linear_address >> 40) & 0x1;
|
|
|
|
index = kvmppc_44x_tlb_index(vcpu, eaddr, pid, as);
|
|
if (index == -1) {
|
|
tr->valid = 0;
|
|
return 0;
|
|
}
|
|
|
|
tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
|
|
/* XXX what does "writeable" and "usermode" even mean? */
|
|
tr->valid = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
|
|
{
|
|
struct kvmppc_vcpu_44x *vcpu_44x;
|
|
struct kvm_vcpu *vcpu;
|
|
int err;
|
|
|
|
vcpu_44x = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
|
|
if (!vcpu_44x) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
vcpu = &vcpu_44x->vcpu;
|
|
err = kvm_vcpu_init(vcpu, kvm, id);
|
|
if (err)
|
|
goto free_vcpu;
|
|
|
|
return vcpu;
|
|
|
|
free_vcpu:
|
|
kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
|
|
out:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
|
|
|
|
kvm_vcpu_uninit(vcpu);
|
|
kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
|
|
}
|
|
|
|
static int __init kvmppc_44x_init(void)
|
|
{
|
|
int r;
|
|
|
|
r = kvmppc_booke_init();
|
|
if (r)
|
|
return r;
|
|
|
|
return kvm_init(NULL, sizeof(struct kvmppc_vcpu_44x), THIS_MODULE);
|
|
}
|
|
|
|
static void __exit kvmppc_44x_exit(void)
|
|
{
|
|
kvmppc_booke_exit();
|
|
}
|
|
|
|
module_init(kvmppc_44x_init);
|
|
module_exit(kvmppc_44x_exit);
|