186 lines
4.9 KiB
C
186 lines
4.9 KiB
C
/*
|
|
* Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved.
|
|
*
|
|
* Author: Yu Liu, yu.liu@freescale.com
|
|
*
|
|
* Description:
|
|
* This file is based on arch/powerpc/kvm/44x_tlb.h,
|
|
* by Hollis Blanchard <hollisb@us.ibm.com>.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __KVM_E500_TLB_H__
|
|
#define __KVM_E500_TLB_H__
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include <asm/mmu-book3e.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm/kvm_e500.h>
|
|
|
|
#define KVM_E500_TLB0_WAY_SIZE_BIT 7 /* Fixed */
|
|
#define KVM_E500_TLB0_WAY_SIZE (1UL << KVM_E500_TLB0_WAY_SIZE_BIT)
|
|
#define KVM_E500_TLB0_WAY_SIZE_MASK (KVM_E500_TLB0_WAY_SIZE - 1)
|
|
|
|
#define KVM_E500_TLB0_WAY_NUM_BIT 1 /* No greater than 7 */
|
|
#define KVM_E500_TLB0_WAY_NUM (1UL << KVM_E500_TLB0_WAY_NUM_BIT)
|
|
#define KVM_E500_TLB0_WAY_NUM_MASK (KVM_E500_TLB0_WAY_NUM - 1)
|
|
|
|
#define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM)
|
|
#define KVM_E500_TLB1_SIZE 16
|
|
|
|
#define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF))
|
|
#define tlbsel_of(index) ((index) >> 16)
|
|
#define esel_of(index) ((index) & 0xFFFF)
|
|
|
|
#define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW)
|
|
#define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW)
|
|
#define MAS2_ATTRIB_MASK \
|
|
(MAS2_X0 | MAS2_X1)
|
|
#define MAS3_ATTRIB_MASK \
|
|
(MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
|
|
| E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
|
|
|
|
extern void kvmppc_dump_tlbs(struct kvm_vcpu *);
|
|
extern int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *, ulong);
|
|
extern int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *);
|
|
extern int kvmppc_e500_emul_tlbre(struct kvm_vcpu *);
|
|
extern int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *, int, int);
|
|
extern int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *, int);
|
|
extern int kvmppc_e500_tlb_search(struct kvm_vcpu *, gva_t, unsigned int, int);
|
|
extern void kvmppc_e500_tlb_put(struct kvm_vcpu *);
|
|
extern void kvmppc_e500_tlb_load(struct kvm_vcpu *, int);
|
|
extern int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *);
|
|
extern void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *);
|
|
extern void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *);
|
|
|
|
/* TLB helper functions */
|
|
static inline unsigned int get_tlb_size(const struct tlbe *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 7) & 0x1f;
|
|
}
|
|
|
|
static inline gva_t get_tlb_eaddr(const struct tlbe *tlbe)
|
|
{
|
|
return tlbe->mas2 & 0xfffff000;
|
|
}
|
|
|
|
static inline u64 get_tlb_bytes(const struct tlbe *tlbe)
|
|
{
|
|
unsigned int pgsize = get_tlb_size(tlbe);
|
|
return 1ULL << 10 << pgsize;
|
|
}
|
|
|
|
static inline gva_t get_tlb_end(const struct tlbe *tlbe)
|
|
{
|
|
u64 bytes = get_tlb_bytes(tlbe);
|
|
return get_tlb_eaddr(tlbe) + bytes - 1;
|
|
}
|
|
|
|
static inline u64 get_tlb_raddr(const struct tlbe *tlbe)
|
|
{
|
|
u64 rpn = tlbe->mas7;
|
|
return (rpn << 32) | (tlbe->mas3 & 0xfffff000);
|
|
}
|
|
|
|
static inline unsigned int get_tlb_tid(const struct tlbe *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 16) & 0xff;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_ts(const struct tlbe *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 12) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_v(const struct tlbe *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 31) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_iprot(const struct tlbe *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 30) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.pid & 0xff;
|
|
}
|
|
|
|
static inline unsigned int get_cur_spid(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500)
|
|
{
|
|
return (vcpu_e500->mas6 >> 16) & 0xff;
|
|
}
|
|
|
|
static inline unsigned int get_cur_sas(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500)
|
|
{
|
|
return vcpu_e500->mas6 & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_tlbsel(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500)
|
|
{
|
|
/*
|
|
* Manual says that tlbsel has 2 bits wide.
|
|
* Since we only have two TLBs, only lower bit is used.
|
|
*/
|
|
return (vcpu_e500->mas0 >> 28) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_nv_bit(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500)
|
|
{
|
|
return vcpu_e500->mas0 & 0xfff;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_esel_bit(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500)
|
|
{
|
|
return (vcpu_e500->mas0 >> 16) & 0xfff;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_esel(
|
|
const struct kvmppc_vcpu_e500 *vcpu_e500,
|
|
int tlbsel)
|
|
{
|
|
unsigned int esel = get_tlb_esel_bit(vcpu_e500);
|
|
|
|
if (tlbsel == 0) {
|
|
esel &= KVM_E500_TLB0_WAY_NUM_MASK;
|
|
esel |= ((vcpu_e500->mas2 >> 12) & KVM_E500_TLB0_WAY_SIZE_MASK)
|
|
<< KVM_E500_TLB0_WAY_NUM_BIT;
|
|
} else {
|
|
esel &= KVM_E500_TLB1_SIZE - 1;
|
|
}
|
|
|
|
return esel;
|
|
}
|
|
|
|
static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
|
|
const struct tlbe *tlbe)
|
|
{
|
|
gpa_t gpa;
|
|
|
|
if (!get_tlb_v(tlbe))
|
|
return 0;
|
|
|
|
/* Does it match current guest AS? */
|
|
/* XXX what about IS != DS? */
|
|
if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS))
|
|
return 0;
|
|
|
|
gpa = get_tlb_raddr(tlbe);
|
|
if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
|
|
/* Mapping is not for RAM. */
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
#endif /* __KVM_E500_TLB_H__ */
|